CN-121735171-B - Self-locking type hydraulic jacking device and application method thereof

CN121735171BCN 121735171 BCN121735171 BCN 121735171BCN-121735171-B

Abstract

The invention provides a self-locking type hydraulic jacking device and a using method thereof, and belongs to the technical field of heavy-load lifting equipment. According to the invention, the hydraulic lifting unit is used for carrying out hydraulic lifting operation on the pressure bearing plate, and after the pressure bearing plate is lifted to a preset height, a multiple interlocking mechanical safety bearing state is formed by the first lock body unit, the second lock body unit, the third lock body unit and the fourth lock body unit, so that mechanical locking protection independent of a power source is provided for the hydraulic lifting unit, pressure maintaining of a hydraulic system is not needed, the inherent risks of low safety redundancy and pressure maintaining of the system in the prior art are effectively solved, and safety guarantee is provided for various high-safety construction heavy-load lifting operations including hanging basket lifting.

Inventors

HU XIAOZHU
WU WEILI
WANG YANJUN
JIANG MINJUN
DU LEI

Assignees

中交三航局第三工程有限公司

Dates

Publication Date: 20260508
Application Date: 20260228

Claims (9)

1. The utility model provides a from locking-type hydraulic jacking device, includes jacking operation panel and with jacking operation panel fixed connection's base, its characterized in that still includes jacking module, and the jacking module includes: The fixing frame is fixedly connected with the jacking operation table, and a functional body is connected below the fixing frame; the hydraulic lifting unit comprises a hydraulic pump fixed on the inner side wall of the functional body, the hydraulic pump is connected with a hydraulic lifting shaft, and the tail end of the hydraulic lifting shaft is connected with a bearing plate; the first lock body unit comprises a lock ring arranged in the functional body, and the lock ring can be driven to move along the height direction of the functional body and rotate around the axis of the functional body; the third lock body unit comprises a lock frame body arranged on the inner bottom wall of the lock ring, a safety seat arranged on one side of the lock frame body, which faces the hydraulic jacking shaft, a supporting block seat arranged on the top of the lock frame body, a first lock shaft which can penetrate through the supporting block seat and extend to one side of the hydraulic jacking shaft, and a second lock shaft which can penetrate through the lock frame body and extend to one side of the inner side wall of the functional body; The lock comprises a safety seat, a first lock body unit, a second lock body unit, a locking ring, a first lock shaft, a second lock body unit, a first lock shaft and a second lock body unit, wherein the first lock shaft is arranged on the hydraulic jacking shaft; The fourth lock body unit comprises a sliding rail frame fixed in the functional body and a lock platform capable of being driven to move along the sliding rail frame, and when the first lock shaft stretches into the first lock groove and the lock platform rises to be coaxial with the second lock shaft, the second lock shaft can be driven to stretch into the second lock groove of the lock platform through a lock hole of the lock ring; the first lock body unit further includes: the first driving motor is arranged on the inner top wall of the functional body; The rotary table is arranged above the hydraulic pump, the top surface of the rotary table is connected with the first driving motor through a rotating shaft, a plurality of second driving motors are arranged on the bottom surface of the rotary table, and the second driving motors are distributed in a circumferential array relative to the axis of the rotary table; the first screw rod is connected with the second driving motor, and the locking ring is sleeved on the first screw rod; the second driving motor can drive the first screw rod to rotate so as to drive the lock ring to move along the height direction of the functional body; the first driving motor can drive the rotary table to rotate so as to drive the locking ring to rotate around the axis of the functional body.
2. The self-locking hydraulic jacking device of claim 1, wherein a plurality of third lock units are provided, and the plurality of third lock units are circumferentially distributed around the hydraulic jacking shaft; The upper part of the safety seat is provided with a first pressure sensor, when the pressure value detected by the first pressure sensor reaches a preset value, the safety seat is determined to be in contact with the bottom surface of the second lock body unit, and the lock ring stops rising.
3. The self-locking hydraulic jacking device of claim 2, wherein said third lock body unit further comprises: The fixed plate seat is arranged on the top surface of the lock frame body, a third driving motor is arranged on the fixed plate seat, the third driving motor is connected with a second screw rod, a sliding seat is connected on the second screw rod, and the sliding seat is in sliding fit with a sliding groove on the top surface of the lock frame body; the third driving motor can drive the sliding seat to drive the first lock shaft to extend into the first lock groove on the second lock body unit by driving the second screw rod to rotate, and when the pressure value detected by the second pressure sensor reaches a preset value, the first lock shaft is determined to extend into the first lock groove completely, the first lock shaft is abutted against the bottom wall of the first lock groove, and the third driving motor stops rotating.
4. The self-locking hydraulic jacking device of claim 2, wherein said third lock body unit further comprises: The fourth driving motor is arranged in a mounting groove on one side, facing the fourth lock body unit, of the safety seat, the fourth driving motor is connected with a third screw rod, the third screw rod is connected with a sliding plate frame, and the front end of the sliding plate frame is connected with a second lock shaft penetrating through the lock frame body through a fixed shaft body; a third pressure sensor is arranged at one end of the second lock shaft, which faces the fourth lock body unit; a first position sensor is embedded in the second lock shaft; The fourth driving motor can drive the sliding plate frame to drive the second lock shaft to extend through driving the third screw rod to rotate, when the pressure value detected by the third pressure sensor reaches a preset value, the second lock shaft is determined to extend into the second lock groove of the lock platform completely, the second lock shaft abuts against the bottom wall of the second lock groove, and the fourth driving motor stops rotating.
5. The self-locking hydraulic jacking device of claim 1, wherein said fourth lock body unit further comprises: the sliding rail frame is fixed in the functional body through the top fixing frame plate connected with the inner side wall of the functional body and the bottom fixing frame plate connected with the bottom wall of the functional body; The gear sliding plate frame is arranged in the sliding rail frame in a sliding way, the lock platform is arranged on one side of the gear sliding plate frame, which faces the lock ring, and the lock platform is provided with a second position sensor; The fifth driving motor is connected with a rotating shaft rod, a fixed lifting gear shaft meshed with the gear slide plate frame is arranged on the rotating shaft rod, one end, far away from the fifth driving motor, of the rotating shaft rod is connected with a rotating seat frame, and the rotating seat frame and the fifth driving motor are fixedly connected with the inner wall of the functional body through a fixed net frame; The fifth driving motor can drive the gear sliding plate frame to move along the sliding rail frame through the fixed lifting gear shaft, and the lock platform can move along the sliding rail frame along with the gear sliding plate frame.
6. The self-locking hydraulic jacking device of claim 1, wherein the carrier plate position locators are mounted on both sides of the carrier plate.
7. The self-locking hydraulic jacking device according to claim 1, wherein a fixed top frame is arranged at the bottom of the fixed frame, the functional bodies comprise a first functional body and a second functional body which are sequentially arranged at the bottom of the fixed top frame, the second functional body is arranged on the base through a fixed ring at the bottom, a base groove is formed in the inner side of the fixed ring, and the locking ring can be lowered into the base groove.
8. The self-locking hydraulic jacking device of claim 1, wherein the mounting end of the hydraulic pump is secured to the inner side wall of the function body by a plurality of fixed shafts circumferentially distributed about the axis of the function body.
9. A method of using a self-locking hydraulic jacking device as claimed in any one of claims 1 to 8, wherein said method of use includes the steps of: starting a hydraulic pump, and driving the bearing plate to lift upwards by the hydraulic lifting shaft; after the bearing plate reaches a preset height position, the lock ring is driven to move along the height direction of the functional body, when the lock ring rises to the position that the safety seat is contacted with the bottom surface of the second lock body unit, the lock ring is rotated to enable the safety seat to be in positioning connection with the lock plug-in unit, and after the safety seat is in positioning connection with the lock plug-in unit, the first lock shaft is driven to extend into the first lock groove; when the first lock shaft extends into the first lock groove and the lock platform rises to be coaxial with the second lock shaft, the second lock shaft is driven to extend into the second lock groove of the lock platform through the lock hole of the lock ring.

Description

Self-locking type hydraulic jacking device and application method thereof Technical Field The invention relates to the technical field of heavy-load lifting equipment, in particular to a self-locking hydraulic lifting device and a using method thereof. Background In the field of vertical lifting and safety locking of heavy-duty equipment, hydraulic lifting systems are widely used because of their high lifting force and stable control. However, the current mainstream hydraulic jacking devices generally have a fundamental safety defect that the maintenance of the jacking state is highly dependent on the continuous pressure maintaining of the hydraulic system itself. In actual operation, the hydraulic pipeline may leak due to aging and vibration, the hydraulic valve may fail, or the power system may fail suddenly, which may cause the system to lose pressure, resulting in instant loss of the lifting force, causing the load bearing platform (or load bearing platform) to slide down or even fall, resulting in serious safety accidents. To remedy the above-mentioned drawbacks, some solutions have attempted to introduce a mechanical locking mechanism after the hydraulic pressure has been raised into place. However, the existing mechanical locking method often has the problems of insufficient reliability and low automation degree. For example, common single point deadbolt locks, which have a single lock point, lack redundant design, and once that point fails, result in an overall lock failure. In addition, the engagement and disengagement of the mechanical lock usually depend on manual observation and operation, so that the efficiency is low, the risk of misoperation or locking in place (such as incomplete insertion of a bolt) exists, and a great potential safety hazard exists when the pressure maintaining of the hydraulic system fails. The safety problem is particularly prominent under severe working conditions with extremely high safety requirements, such as bridge cantilever pouring construction. In such construction, the hanging basket is used as a core movable working platform, the lifting and locking operation is frequent, and the life safety and the engineering quality of constructors are directly related. The traditional hanging basket lifting mode is difficult to effectively avoid the sliding risk caused by system decompression or human negligence no matter depending on hydraulic pressure maintaining or a simple mechanical lock. Disclosure of Invention The invention provides a self-locking type hydraulic lifting device and a use method thereof, wherein the hydraulic lifting unit is used for carrying out hydraulic lifting operation on a bearing plate, and after the bearing plate is lifted to a preset height, a mechanical safety bearing state of multiple interlocking is formed by a first lock body unit, a second lock body unit, a third lock body unit and a fourth lock body unit, so that mechanical locking protection independent of a power source is provided for the hydraulic lifting unit, pressure maintaining of a hydraulic system is not needed, the inherent risks of low safety redundancy and pressure maintaining of the system in the prior art are effectively solved, and safety guarantee is provided for various high-safety construction heavy-load lifting operations including hanging basket lifting. The device can be suitable for lifting and safe locking of large-scale components such as hanging baskets in bridge construction, and can also be used for other occasions needing high-safety vertical lifting. In a first aspect, the present invention provides a self-locking hydraulic jacking device, including a jacking working table and a base fixedly connected with the jacking working table, and further including a jacking module, the jacking module includes: The fixing frame is fixedly connected with the jacking operation table, and a functional body is connected below the fixing frame; the hydraulic lifting unit comprises a hydraulic pump fixed on the inner side wall of the functional body, the hydraulic pump is connected with a hydraulic lifting shaft, and the tail end of the hydraulic lifting shaft is connected with a bearing plate; the first lock body unit comprises a lock ring arranged in the functional body, and the lock ring can be driven to move along the height direction of the functional body and rotate around the axis of the functional body; the third lock body unit comprises a lock frame body arranged on the inner bottom wall of the lock ring, a safety seat arranged on one side of the lock frame body, which faces the hydraulic jacking shaft, a supporting block seat arranged on the top of the lock frame body, a first lock shaft which can penetrate through the supporting block seat and extend to one side of the hydraulic jacking shaft, and a second lock shaft which can penetrate through the lock frame body and extend to one side of the inner side wall of the functional body; The second lock body unit is ar