Search

CN-118062616-B - Modification method of side-tipping type hydraulic car dumper

CN118062616BCN 118062616 BCN118062616 BCN 118062616BCN-118062616-B

Abstract

The refitting method of the side-tipping type hydraulic car dumper comprises the steps of fixing a car clamping arm in the first step, disassembling accessories in the second step, lifting the car clamping beam in the third step, disassembling the car clamping beam in the fourth step and reforming the car clamping arm in the fifth step, wherein only a new hydraulic cylinder and a balancing weight are needed in the refitting process, the rest parts of the side-tipping type hydraulic car dumper car clamping device are old parts of the original side-tipping type II car dumper car clamping device, each car clamping arm is driven by the corresponding hydraulic cylinder to independently move after refitting, the car clamping arms can be controlled to rotate on the car leaning beam through the expansion and contraction of the hydraulic cylinder, thus the car pressing work is completed, the rotation of the car clamping arms is controlled by the hydraulic cylinder only, a pawl ratchet locking device is not needed, and further the phenomenon of jumping teeth cannot occur. The hydraulic cylinder can independently control each car clamping arm, and different car pressing force requirements can be met through different hydraulic cylinders.

Inventors

  • HUANG YANSHENG
  • XIA QIANPING
  • LIU QING
  • DAI HAOLIN
  • WANG MENGJUN
  • XU YAO
  • WANG TIANRUI

Assignees

  • 中国电建集团武汉重工装备有限公司

Dates

Publication Date
20260505
Application Date
20231110

Claims (9)

  1. 1. A modification method of a side-tipping hydraulic car dumper is characterized by comprising the following steps of: the refitting method is suitable for refitting the side-tipping II type car dumper: The side-tipping II type car dumper comprises a car leaning beam (1), an equalizing beam (2), a car clamping beam (6), a ground stop (7), a driving system (8), two end plates, a plurality of car clamping arms (3), a plurality of pawls (9) and a plurality of arc ratchet racks (10); The vehicle-leaning beam (1) is arranged on one side of the unloading platform, the vehicle-leaning beam (1) is arranged parallel to the unloading platform, two ends of the vehicle-leaning beam (1) are respectively and coaxially connected with an end disc, the end discs are in transmission fit with the driving system (8), a plurality of upper hinging seats (11) are uniformly and fixedly arranged at the top of the vehicle-leaning beam (1), a vehicle clamping arm (3) is fixedly arranged on each upper hinging seat (11), the middle part of the vehicle clamping arm (3) is hinged with the corresponding upper hinging seat (11), an equalizing beam (2) hinged with the vehicle clamping arm (3) is fixedly arranged at the top end of the vehicle clamping arm, the bottom end of the vehicle clamping arm (3) is fixedly connected with the vehicle clamping beam (6), a ground stop (7) is fixedly arranged below the vehicle clamping beam (6), pawls (9) are fixedly arranged at two ends of the vehicle clamping beam (6) and are matched with arc-shaped ratchet teeth (10) on the end disc on the same side, and the driving system (8) is fixedly arranged at the ground end of the vehicle clamping beam (6) and is matched with the driving system (8) through the driving system; The retrofitting method comprises the steps of: S1, positioning and selecting a hydraulic cylinder, obtaining the limit positions of a car clamping arm (3) in a car pressing state and a free state according to the car pressing requirement of a modified car dumper, selecting one point in the middle of the car clamping arm (3) as a hinge point of the hydraulic cylinder (4), obtaining the stroke of the hydraulic cylinder (4) according to the two limit positions, calculating the movement condition and the stress of the hydraulic cylinder (4) in the car pressing process of the car dumper, adjusting the position of the hinge point, and designing the shape and the installation position of a protection device (32) after the position of the hinge point is determined, and entering the step S2 of modifying the car pressing device; s2, refitting the vehicle pressing device, fixedly connecting all the vehicle clamping arms (3) with the vehicle leaning beam (1) into a whole, dismantling a ground stop (7), a driving system (8), a pawl (9) and an arc ratchet rack (10) after the vehicle clamping arms (3) are connected with the vehicle leaning beam (1) into a whole, welding lifting lugs (14) at the left and right ends of the vehicle leaning beam (1) and the vehicle clamping beam (6), connecting the lifting lugs (14) of the vehicle leaning beam (1) and the vehicle clamping beam (6) through steel wire ropes and chain blocks, dismantling the vehicle clamping beam (6), and after the vehicle clamping beam (6) is dismantled, the car clamping arm (3) is provided with a car clamping arm hinge hole (33), an oil cylinder hinge hole (34), an oil cylinder movable groove (35) and a coal cleaning groove (36), wherein the car clamping arm hinge hole (33) is the hinge point position obtained in the steps of positioning and selecting the S1 hydraulic oil cylinder, an oil cylinder seat (12) is welded at the bottom of a car leaning beam (1), a telescopic rod and a cylinder body of the hydraulic oil cylinder (4) are respectively hinged on the oil cylinder seat (12) and the oil cylinder hinge hole (34), after the hydraulic oil cylinder (4) is installed, two sides of the hydraulic oil cylinder (4) are respectively provided with a protection device (32), meanwhile, a balancing weight (31) is welded at the bottom of the car clamping arm (3), the hydraulic oil pipes are communicated with the hydraulic oil cylinders (4) and the main hydraulic station (5), after the hydraulic oil cylinders (4) are connected, the channel steel (13) welded by the car clamping arm (3) is disassembled, and at the moment, the step of S3 of detecting and upgrading is carried out; s3, detecting and upgrading, namely installing an angle detection device (15) and a leaning detection device (16) on the dumper, and entering a step S4 of stably refitting a platform after the angle detection device (15) and the leaning detection device (16) are installed; s4, performing stable refitting on the platform, installing two platform stabilizing devices (17) on the car dumper, and finishing the refitting method after the two platform stabilizing devices (17) are installed.
  2. 2. The method of retrofitting a roll hydraulic dumper of claim 1 wherein: the positioning and selecting of the S1 hydraulic cylinder comprises the following steps: S1.1, determining the stroke and the mounting position of a hydraulic cylinder (4), obtaining the limit position of a car clamping arm (3) in a car pressing state according to the car pressing requirement of the modified car dumper, obtaining the limit position of the car clamping arm (3) in a free state according to the structure of the car dumper, drawing a cylinder seat (12) and the car clamping arm (3) in two limit positions on a two-dimensional diagram of the car dumper, taking the same point in the middle of the car clamping arm (3) in the two limit positions as a hinge point of the hydraulic cylinder (4), obtaining the maximum stroke of the hydraulic cylinder (4) according to the hinge point position in the two limit positions, obtaining the mounting distance of the hydraulic cylinder (4) according to the distance between the hinge point and the cylinder seat (12) when the car clamping arm (3) is in the highest position, and entering into S1.2 to determine other parameter steps of the hydraulic cylinder (4); S1.2, determining other parameters of a hydraulic oil cylinder (4), after determining the position of a hinge point, checking the stress of the hydraulic oil cylinder (4) in the process of pressing the car of the car dumper, selecting the specification of the hydraulic oil cylinder (4) according to the stress condition of the hydraulic oil cylinder (4), checking whether the hydraulic oil cylinder (4) interferes with a leaning beam (1) or a car clamping arm (3) in the process of pressing the car of the car dumper according to the size information of the hydraulic oil cylinder (4) of the specification, entering a step of finely adjusting the hinge point in S1.3 when interference occurs, and entering a step of designing a protection device in S1.4 when interference does not occur; s1.3, fine tuning a hinge point, when the hydraulic cylinder (4) interferes with the leaning beam (1) or the clamping arm (3), adjusting the position of the hinge point, when the hinge point is adjusted to be not interfered, calculating the maximum distance and the minimum distance between the hinge point and the cylinder seat (12), when the maximum distance is larger than the maximum length of the hydraulic cylinder (4) or the minimum distance is smaller than the minimum length of the hydraulic cylinder (4), returning to the step S1.1 for determining the stroke and the installation position of the hydraulic cylinder (4), and when the maximum distance is smaller than or equal to the maximum length of the hydraulic cylinder (4) and the minimum distance is larger than or equal to the minimum length of the hydraulic cylinder (4), entering the step S1.4 for designing a protection device; S1.4, designing a protection device, drawing a hydraulic oil cylinder (4) when the telescopic rod extends to the maximum stroke on a two-dimensional diagram of the car dumper, taking the outer contour of the hydraulic oil cylinder (4) as a region to be protected, designing the shape and the installation position of the protection device (32) according to the region to be protected, enabling the protection device (32) to cover the region to be protected, and entering the step S2 of modifying the car pressing device after the design is completed.
  3. 3. The method of retrofitting a roll hydraulic dumper of claim 2 wherein: the step S3 of detecting the upgrade comprises the following steps: When each hydraulic cylinder (4) is communicated with a main hydraulic station (5) through a hydraulic oil pipe, an operator installs a photosensitive element of an angle detection device (15) on a support of a leaning beam (1), installs a photoelectric coded disc of the angle detection device (15) on a rotating shaft of the leaning beam (1), after the angle detection device (15) is installed, the operator places the leaning detection device (16) on the top of the leaning beam (1), adjusts the position of the leaning detection device (16), enables a feeler lever of the leaning detection device (16) to be in transmission fit with an open wagon corresponding to a rolling type II wagon clamping device, at the moment, fixes the leaning detection device (16) on the top of the leaning beam (1), and enters into a stable modification step of an S4 platform after the leaning detection device (16) is installed.
  4. 4. A method of retrofitting a roll hydraulic dumper according to claim 3 wherein: The stable modification of the S4 platform comprises the following steps: An operator fixes the cushion block (19) on a supporting surface right below the leaning beam (1), simultaneously places the wedge block (18) on the top of the cushion block (19), enables the wedge surface of the wedge block (18) to be opposite to the bottom of the leaning beam (1), hinges the telescopic rod of the platform stabilizing cylinder (21) with the wedge block (18), hinges the cylinder body of the platform stabilizing cylinder (21) with the fixed bracket (20), at the moment, the operator adjusts the extension amount of the telescopic rod of the platform stabilizing cylinder (21) to half of the maximum extension amount, and fixes the fixed bracket (20) on the supporting surface of the rolling II type car dumper clamping device, and the refitting method is finished.
  5. 5. A side-tipping hydraulic dumper structure characterized in that the modification method of the side-tipping hydraulic dumper is adopted to obtain the side-tipping hydraulic dumper structure by the following steps: The car dumper comprises a car leaning beam (1), an equalizing beam (2), a plurality of car clamping arms (3) and a plurality of hydraulic cylinders (4); The car beam (1) is arranged on one side of the car unloading platform, the car beam (1) is arranged parallel to the car unloading platform, two ends of the car beam (1) are respectively and coaxially connected with one driving end disc, a plurality of upper hinging seats (11) are uniformly and fixedly arranged on the top of the car beam (1), a plurality of cylinder seats (12) are uniformly and fixedly arranged on the bottom of the car beam (1), the car beam (1) is in rotary fit with the middle part of a car clamping arm (3) through the upper hinging seats (11) on the top of the car beam, the cylinder body of a hydraulic cylinder (4) is hinged with the corresponding cylinder seat (12) of the hydraulic cylinder, the telescopic rod of the hydraulic cylinder (4) is hinged with the corresponding car clamping arm (3) of the hydraulic cylinder, the top of the car clamping arm (3) is in rotary fit with the balance beam (2), and the bottom of the car clamping arm (3) is uniformly and fixedly provided with a balancing weight (31), and a plurality of hydraulic cylinders (4) are communicated with a main hydraulic station (5).
  6. 6. The roll hydraulic dumper structure of claim 5, wherein: the side-tipping II type car dumper clamping device further comprises an angle detection device (15) and a car leaning detection device (16), wherein the angle detection device (15) is a photoelectric encoder, the angle detection device (15) is fixedly arranged on a support of the car leaning beam (1), a photoelectric code disc of the angle detection device (15) and the car leaning beam (1) are coaxially arranged, the car leaning detection device (16) is a contact switch, the car leaning detection device (16) is fixedly arranged at the top of the car leaning beam (1), and a feeler lever of the car leaning detection device (16) is opposite to the corresponding open car direction of the side-tipping II type car dumper clamping device.
  7. 7. The roll hydraulic dumper structure of claim 6, wherein: The car clamping device of the side-tipping II type car dumper further comprises at least two platform stabilizing devices (17), each platform stabilizing device (17) comprises a wedge block (18), a cushion block (19), a fixed support (20) and a platform stabilizing cylinder (21), each cushion block (19) and each fixed support (20) are fixedly arranged on a supporting surface of the side-tipping II type car dumper, each wedge block (18) is arranged at the top of each cushion block (19), each wedge block (18) is in sliding fit with each cushion block (19), the wedge surface of each wedge block (18) is opposite to the bottom of an open car platform, a proximity switch matched with the open car platform is arranged on the wedge surface of each wedge block (18), each proximity switch is used for sending out signals, a control system controls the pressure maintaining of each platform stabilizing cylinder (21) according to the signals, one end of each wedge block (18) away from a car beam (1) is hinged with a telescopic rod of each platform stabilizing cylinder (21), and the cylinder body of each platform stabilizing cylinder (21) is hinged with each fixed support (20).
  8. 8. The roll hydraulic dumper structure of claim 7, wherein: The hydraulic oil cylinder (4) is characterized in that two protecting devices (32) are respectively arranged on two sides of the hydraulic oil cylinder (4), the protecting devices (32) are of arch-shaped cover structures, the two protecting devices (32) are respectively arranged on two sides of the corresponding hydraulic oil cylinder (4), the protecting devices (32) are in clearance fit with the clamping arm (3), and the straight line side of each protecting device (32) is fixedly connected with the side wall of the corresponding car leaning beam (1).
  9. 9. The roll hydraulic dumper structure of claim 8, wherein: The car clamping arm (3) is provided with a car clamping arm hinge hole (33), an oil cylinder hinge hole (34) and an oil cylinder movable groove (35) on the side close to the car clamping beam (1), the car clamping arm hinge hole (33) is formed in the middle of the car clamping arm (3), the oil cylinder movable groove (35) is formed in the bottom end direction of the car clamping arm (3) from the end of the car clamping arm hinge hole (33), and the car clamping arm (3) is provided with a coal cleaning groove (36) on the side far away from the car clamping beam (1).

Description

Modification method of side-tipping type hydraulic car dumper Technical Field The invention relates to a refitting method of a tipper, in particular to a refitting method of a side-tipping type hydraulic tipper. Background The side-tipping II type dumper is a common bulk material tipping device in the railway transportation field, is suitable for large-scale thermal power plants, chemical plants, ports, storage and transportation stations, coking plants, sintering plants and the like in the metallurgical industry, and is used for driving a car clamping arm and a car leaning beam to rotate through an end disc so as to be matched with the car clamping arm, the car leaning beam and a car unloading platform to clamp and further overturn a vehicle. The side-tipping II type car dumper has the characteristics of simple equipment structure, high rigidity, high deformation resistance, durability, less overhaul and maintenance workload and cost, low manufacturing cost, strong environmental suitability and the like, but the pure mechanical car clamping device in the side-tipping II type car dumper has the defects of uncontrollable car pressing force, easy occurrence of tooth jump phenomenon and the like, and is gradually replaced with a hydraulic car clamping device in the current industry. Although the dumper adopting the hydraulic car clamping device has the advantages of controllable car pressing force, no tooth jump phenomenon and the like, the dumper still has the following defects: 1. the traditional side-tipping II-type car dumper is integrally replaced by a car dumper adopting a hydraulic car clamping device, so that the cost is high. 2. If only the car clamping device is replaced on the basis of the side-tipping II type car dumper, the installation position of the hydraulic oil cylinder needs to be adjusted on site, and the transformation period is long. The disclosure of this background section is only intended to increase the understanding of the general background of the application and should not be taken as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art. Disclosure of Invention The invention aims to overcome the defects of higher replacement cost and longer transformation period in the prior art, and provides a modification method of a side-tipping hydraulic car dumper with lower replacement cost and shorter transformation period. In order to achieve the above object, the technical solution of the present invention is: A retrofitting method for a roll-type hydraulic dumper, the retrofitting method being adapted to retrofit a roll-type II dumper: the side-tipping II type car dumper comprises a car leaning beam, an equalizing beam, a car clamping beam, a ground stop, a driving system, two end plates, a plurality of car clamping arms, a plurality of pawls and a plurality of arc ratchet racks; The vehicle-leaning beam is arranged on one side of the unloading platform, the vehicle-leaning beam is parallel to the unloading platform, two ends of the vehicle-leaning beam are respectively and coaxially connected with an end disc, the end discs are in transmission fit with a driving system, a plurality of upper hinging seats are uniformly and fixedly arranged on the top of the vehicle-leaning beam, a vehicle clamping arm is fixedly arranged on each upper hinging seat, the middle part of the vehicle clamping arm is hinged with the corresponding upper hinging seat, an equalizing beam hinged with the vehicle clamping arm is fixedly arranged on the top end of the vehicle clamping arm, the bottom end of the vehicle clamping arm is fixedly connected with the vehicle clamping beam, a ground stop is fixedly arranged below the vehicle clamping beam, pawls matched with each other are fixedly arranged at two ends of the vehicle clamping beam, the pawls are matched with arc-shaped ratchet racks on the end discs on the same side, the driving system is fixedly arranged on the ground, and the power output end of the driving system is in transmission fit with each vehicle clamping arm sequentially through the end discs and the vehicle clamping beam; The retrofitting method comprises the steps of: s1, positioning and selecting a hydraulic cylinder, obtaining limit positions of a car clamping arm in a car pressing state and a free state according to the car pressing requirement of a modified car dumper, selecting a point in the middle of the car clamping arm as a hinge point of the hydraulic cylinder, obtaining a hydraulic cylinder stroke according to the two limit positions, accounting the movement condition and the stress of the hydraulic cylinder in the car pressing process of the car dumper, adjusting the position of the hinge point, designing the shape and the mounting position of a protection device after the position of the hinge point is determined, and entering the step S2 of modifying the car pressing device at the moment; S2,