CN-121990471-A - Double-bridge crane operation mode conversion system and method and bridge crane

CN121990471ACN 121990471 ACN121990471 ACN 121990471ACN-121990471-A

Abstract

The invention discloses a double-bridge crane operation mode conversion system which comprises a first large crane extension rod, a second large crane extension rod, a buffer and a parallel operation device, wherein the first large crane extension rod and the second large crane extension rod are respectively provided with a plurality of first mounting holes, the first mounting holes are configured to be selectively connected with the buffer or a base of the parallel operation device, when the first bridge crane and the second bridge crane are in independent operation configuration, the first mounting holes are matched with the mounting holes of the buffer and are used for fixedly connecting the buffer and the first large crane extension rod or the second large crane extension rod through fasteners, and when the first bridge crane and the second bridge crane are in parallel operation configuration, the first mounting holes are matched with the second mounting holes and are used for fixedly connecting a first base of the parallel operation device and a second base of the parallel operation device with the first large crane extension rod and the second large crane extension rod through the fasteners. A corresponding method and bridge crane are also disclosed. The invention provides the efficiency of the conversion of the operation mode of the double-bridge machine.

Inventors

WANG WEILIANG
LIU JIE
SHI YONGCHANG
DONG HONGYU
HUANG SHENGXIANG
YANG LONG
MA WEIJUN
SI JUNYING
QIU YONGFENG
CHEN CHAO
YING BENBEN
YANG BO

Assignees

杭州华新机电工程有限公司

Dates

Publication Date: 20260508
Application Date: 20260205

Claims (10)

1. The double-bridge crane operation mode conversion system is characterized by comprising a first cart extension rod of a first bridge crane, a second cart extension rod of a second bridge crane, a buffer and a parallel operation device, wherein when the first bridge crane and the second bridge crane independently operate, the buffer is fixedly connected with the first cart extension rod, when the first bridge crane and the second bridge crane are in parallel operation, one end of the parallel operation device is fixedly connected with the first cart extension rod, and the other end of the parallel operation device is fixedly connected with the second cart extension rod; the first cart extension rod and the second cart extension rod comprise cart extension rod main bodies, and a first connecting plate and a second connecting plate which are respectively arranged at two ends of the cart extension rod main bodies, wherein the first connecting plate is used for connecting a cart running mechanism of the bridge crane, and a plurality of first mounting holes are formed in the second connecting plate; the buffer is provided with a mounting hole matched with the first mounting hole; The parallel operation device comprises a swing rod, a first base and a second base, wherein the first base and the second base are respectively arranged at two ends of the swing rod, the first base and the second base respectively comprise an installation end face and a hinge part, the hinge part of the first base is hinged with one end of the swing rod through a first pin shaft, the hinge part of the second base is detachably connected with the other end of the swing rod through a second pin shaft, and the installation end face is provided with a second installation hole corresponding to the first installation hole; The first mounting hole is configured to be selectively connected with the buffer or the base of the parallel operation device, when the first bridge crane and the second bridge crane are in independent operation configuration, the first mounting hole is matched with the mounting hole of the buffer and is used for fixedly connecting the buffer and the first cart extension rod or the second cart extension rod through a fastening piece, and when the first bridge crane and the second bridge crane are in parallel operation configuration, the first mounting hole is matched with the second mounting hole and is used for fixedly connecting the first base and the second base of the parallel operation device with the first cart extension rod and the second cart extension rod through the fastening piece respectively.
2. The dual bridge machine mode of operation switching system of claim 1, further comprising a limit switch and a limit stay; the limit switch is fixedly arranged on the second cart extension rod; the limit stay bar can be selectively arranged on the first cart extension bar or the swing rod of the parallel operation device, when the limit stay bar is arranged on the cart extension bar, the limit stay bar is used for triggering the limit switch when the buffer is compressed to a preset stroke, and when the limit stay bar is arranged on the swing rod, the limit stay bar is used for triggering the limit switch when the swing rod of the parallel operation device is connected with the second base in place.
3. The dual axle machine operating mode switching system of claim 1, further comprising a longitudinal adjustment member including an adjustment pad, a guide shaft, and an externally threaded adjustment portion; The first cart extension rod further comprises an inner cylinder and an outer cylinder which are coaxially arranged between the first connecting plate and the second connecting plate, a supporting circular ring is arranged between one end of the inner cylinder and the outer cylinder, and an internal thread adjusting interface is arranged at one end of the inner cylinder, which is close to the supporting circular ring; when the vehicle runs, the external thread adjusting part of the longitudinal adjusting piece is screwed into the internal thread adjusting interface of the first large vehicle extension rod, and the internal thread adjusting interface and the external thread adjusting part form screw pair connection.
4. The system according to claim 1, wherein the hinge parts of the first base and the second base each comprise two parallel connecting arms perpendicular to the mounting end surface, a receiving space for the end of the swing rod is formed between the two connecting arms, and each connecting arm is provided with a coaxial pin hole.
5. The system according to claim 4, wherein the width of the inner cavity between the connecting arms is W1, the width of the corresponding end portion of the swing rod is W2, and the difference between the width W1 of the inner cavity of the connecting arms and the width W2 of the corresponding end portion of the swing rod is greater than 30mm.
6. The system according to any one of claims 1 to 5, wherein one end of the swing rod is provided with a circular pin hole, the first pin shaft and the hinge part of the first base form clearance fit rotary hinge, and the other end of the swing rod is provided with a vertically opened U-shaped groove, and the U-shaped groove forms a detachable connection interface in clearance fit with the second pin shaft.
7. A method of converting a dual-bridge machine operating mode from a peer operating mode to a parallel operating mode, the method being applied to the conversion system of any one of claims 1-6, the method comprising the steps of: disassembling a buffer arranged on the cart extension rod to expose a first mounting hole on a corresponding second connecting plate; Aligning the mounting end surface of the first base with a second connecting plate of the first cart extension rod, aligning the second mounting hole with the first mounting hole, and fixedly connecting the second mounting hole with the first mounting hole through a fastener; Aligning the mounting end surface of the second base with a second connecting plate of a second cart extension rod, aligning the second mounting hole with the first mounting hole, and fixedly connecting the second mounting hole with the first mounting hole through a fastener; one end of the swing rod is hinged with a hinge part of the first base through a first pin shaft; the other end of the swing rod is detachably connected with the hinge part of the second base through a second pin shaft.
8. The method of switching modes of operation of a double bridge machine according to claim 7, wherein the parallel operation device of the switching system further comprises a longitudinal adjustment member provided with an external thread adjustment portion, and the cart extension rod is provided with an internal thread adjustment interface that mates with the external thread adjustment portion, the method further comprising: the longitudinal adjusting piece is arranged between the second connecting plate of the first cart extension rod and the mounting end surface of the first base; screwing an external thread adjusting part of the longitudinal adjusting piece into an internal thread adjusting interface of the first large turning extension rod; the longitudinal adjustment member is rotated to adjust the distance between the first base and the first cart extension rod.
9. The method of switching modes of operation of a dual bridge machine of claim 8, wherein the switching system further comprises a limit strut and a limit switch, the method further comprising: the limiting stay bar arranged on the first cart extension bar is detached; And installing the limit stay bar at a preset position of the swing rod, so that when the swing rod is reliably connected with the second base through the second pin shaft, the limit stay bar triggers the limit switch installed on the second cart extension rod.
10. Bridge crane, characterized in that a double bridge crane operating mode switching system according to any of claims 1-6 is provided.

Description

Double-bridge crane operation mode conversion system and method and bridge crane Technical Field The invention relates to the technical field of cranes, in particular to a double-bridge crane operation mode conversion system, a conversion method applying the system and a bridge crane provided with the system. Background Bridge cranes (bridge cranes) are important material handling equipment in large plants or work sites. Sometimes, in order to meet the lifting demands of ultra-long and overweight objects, two bridge machines are required to be arranged in parallel and work cooperatively, namely 'parallel operation'. Under the normal working condition, the two bridge machines need to be capable of running independently without interference, namely 'independent running'. Therefore, how to realize safe, reliable and convenient conversion between two operation modes becomes an important technical problem in the field. The traditional mode conversion mode is generally complex in structure, the conversion process is time-consuming and labor-consuming, a large number of components are required to be disassembled and installed, and the stability and reliability of the converted structure are not guaranteed enough. For example, when switching from independent operation to parallel operation, the connection components may need to be replaced entirely, be difficult to adjust, and lack effective condition monitoring and mechanical interlock, presenting a safety hazard. Disclosure of Invention In order to solve the technical problems, the invention provides a double-bridge crane operation mode conversion system and method with ingenious structure, flexible conversion, safety and reliability and a bridge crane. The invention discloses a double-bridge crane operation mode conversion system which comprises a first cart extension rod of a first bridge crane, a second cart extension rod of a second bridge crane, a buffer and a parallel operation device, wherein when the first bridge crane and the second bridge crane independently operate, the buffer is fixedly connected with the first cart extension rod, and when the first bridge crane and the second bridge crane are in parallel operation, one end of the parallel operation device is fixedly connected with the first cart extension rod, and the other end of the parallel operation device is fixedly connected with the second cart extension rod; the first cart extension rod and the second cart extension rod comprise cart extension rod main bodies, and a first connecting plate and a second connecting plate which are respectively arranged at two ends of the cart extension rod main bodies, wherein the first connecting plate is used for connecting a cart running mechanism of the bridge crane, and a plurality of first mounting holes are formed in the second connecting plate; the buffer is provided with a mounting hole matched with the first mounting hole; The parallel operation device comprises a swing rod, a first base and a second base, wherein the first base and the second base are respectively arranged at two ends of the swing rod, the first base and the second base respectively comprise an installation end face and a hinge part, the hinge part of the first base is hinged with one end of the swing rod through a first pin shaft, the hinge part of the second base is detachably connected with the other end of the swing rod through a second pin shaft, and the installation end face is provided with a second installation hole corresponding to the first installation hole; The first mounting hole is configured to be selectively connected with the buffer or the base of the parallel operation device, when the first bridge crane and the second bridge crane are in independent operation configuration, the first mounting hole is matched with the mounting hole of the buffer and is used for fixedly connecting the buffer and the first cart extension rod or the second cart extension rod through a fastening piece, and when the first bridge crane and the second bridge crane are in parallel operation configuration, the first mounting hole is matched with the second mounting hole and is used for fixedly connecting the first base and the second base of the parallel operation device with the first cart extension rod and the second cart extension rod through the fastening piece respectively. In addition, the device also comprises a limit switch and a limit stay bar; the limit switch is fixedly arranged on the second cart extension rod; the limit stay bar can be selectively arranged on the first cart extension bar or the swing rod of the parallel operation device, when the limit stay bar is arranged on the cart extension bar, the limit stay bar is used for triggering the limit switch when the buffer is compressed to a preset stroke, and when the limit stay bar is arranged on the swing rod, the limit stay bar is used for triggering the limit switch when the swing rod of the parallel operation device is conn