Bridge support hoisting equipment

Abstract

The invention discloses bridge support hoisting equipment which comprises a rotating seat and a hoisting mechanism, the hoisting mechanism is mounted on the rotating seat, the hoisting mechanism is connected with an adjusting mechanism, and the adjusting mechanism is connected with an adjusting self-locking mechanism; the adjusting mechanism comprises a fixing frame, a second motor, a first threaded rod, a movable block and a guide rod, and the second motor is fixed to the fixing frame. According to the bridge support hoisting equipment, the adjusting mechanism is adopted, preliminary limiting can be conducted when a bridge support is hoisted, in the hoisting process, through the gravity effect of the bridge support and the cooperation of the transmission effect of a gear and a rack, secondary limiting and fixing of the bridge support can be achieved, and the self-locking effect can be achieved under the gravity effect; and the limiting mechanism is prevented from loosening, so that the safety in the hoisting process is effectively guaranteed, the position of the bridge support can be conveniently adjusted in the mounting process by matching with the position adjusting mechanism, and the accuracy of the mounting position of the bridge support is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting equipment, and in particular to a bridge support hoisting equipment. Background Art

[0002] The bridge bearing is an important structural component connecting the bridge superstructure and substructure. It is located between the bridge and the pad stone. It can reliably transfer the load and deformation (displacement and rotation) borne by the bridge superstructure to the bridge substructure. It is an important force transmission device of the bridge. During the installation of bridge bearings, it is necessary to use lifting equipment to lift the bridge bearings onto the piers for installation. In actual use, the existing lifting equipment mainly uses a simple limiting mechanism to fix the bridge bearings and then lift them. In actual operation, it is difficult to avoid shaking during the high-altitude lifting of the bridge bearings, and the existing limiting mechanism lacks a self-locking structure, which causes the limiting mechanism to loosen due to the shaking during the lifting of the bridge bearings, posing certain safety hazards. To address the above problems, a bridge bearing lifting equipment is designed to better meet actual use needs. Summary of the invention

[0003] The purpose of the present invention is to provide a bridge bearing hoisting device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A bridge bearing hoisting device, comprising a rotating seat and a hoisting mechanism, wherein the hoisting mechanism is installed on the rotating seat, the hoisting mechanism is interconnected with an adjusting mechanism, and the adjusting mechanism is interconnected with an adjusting self-locking mechanism; The adjustment mechanism includes a fixed frame, a second motor, a first threaded rod, a movable block and a guide rod, the fixed frame is fixed with the second motor, the second motor is fixed with the first threaded rod, the first threaded rod is connected to the fixed frame by a bearing, the first threaded rod is connected to the movable block by a thread, and the fixed frame is also fixed with the guide rod; The adjusting self-locking mechanism includes a fixed block, a vertical rod, a first spring, a cross rod, a two-way threaded rod, a gear and a rack. The fixed block is arranged under the movable block, and a vertical rod is fixed on the fixed block. The vertical rod and the movable block are slidably connected. One end of the first spring is fixed on the vertical rod, and the other end of the first spring is fixed on the movable block. The fixed block is connected with a two-way threaded rod with a bearing, and a gear is fixed on the two-way threaded rod. The two-way threaded rod and the limiting mechanism are connected to each other. A gear is also fixed on the two-way threaded rod. A rack is arranged on the side of the gear, and the rack is fixed on the lower end surface of the movable block. The position of the limiting mechanism is adjusted by rotating the two-way threaded rod. At this time, the gear and the rack are not meshed. The bridge support is limited by the limiting mechanism. During the lifting process, the fixed block, the gear and the limiting mechanism are moved downward by the gravity of the bridge support. At this time, the gear and the rack are meshed to realize transmission.

[0005] Preferably, the lifting mechanism includes a hydraulic extension arm, a hydraulic rod, a first motor, a winding roller, a wire rope and a guide wheel. The hydraulic extension arm is rotatably connected to a rotating seat, and one end of the hydraulic rod is rotatably connected to the hydraulic extension arm, and the other end of the hydraulic rod is rotatably connected to the rotating seat. By controlling the extension and retraction of the hydraulic rod, the inclination angle of the hydraulic extension arm can be adjusted, thereby achieving the adjustment of the lifting height, so as to better meet actual use requirements.

[0006] Preferably, a first motor is also fixed on the hydraulic extension arm, and a winding roller is fixed on the output end of the first motor, and the winding roller bearing is connected to the hydraulic extension arm, and the winding roller and the wire rope are connected to each other. Through the above structure, the winding and releasing functions of the wire rope can be realized, thereby providing basic guarantee for the normal lifting.

[0007] Preferably, the wire rope is connected to the fixed frame through a guide wheel, and the guide wheel bearing is connected to the hydraulic extension arm. When the wire rope is wound and released, the normal operation of the device can be ensured by the rotation and guiding effect of the guide wheel.

[0008] Preferably, the guide rod and the movable block are slidably connected, and the guide rod and the first threaded rod are distributed in parallel. When the first threaded rod rotates to drive the movable block to move, the stability of the movable block's movement can be ensured by the sliding guiding effect between the movable block and the guide rod.

[0009] Preferably, the rack and the gear can realize transmission effect when they are meshed, and the distance between the lower end face of the rack and the fixed block is greater than the distance between the upper end of the vertical rod and the movable block. Through the meshing transmission effect between the rack and the gear, both the further limiting of the bridge support and the self-locking effect of the limiting mechanism can be realized, thereby avoiding the loosening of the limiting mechanism during the lifting process and causing accidents. Moreover, by limiting the distance between the lower end face of the rack and the fixed block, the separation of the lower end of the rack and the gear can be avoided, thereby ensuring the normal use of the device.

[0010] Preferably, the limiting mechanism includes a movable frame, a connecting plate, a ball, a movable plate, a sliding rod and a second spring. A connecting plate is fixed on the movable frame, and the connecting plate is connected to the bidirectional threaded rod through a thread, and the connecting plate and the vertical rod are slidably connected. The position of the connecting plate and the movable frame can be adjusted by rotating the bidirectional threaded rod, thereby facilitating the limiting of the bridge bearing, and the stability of the movement of the connecting plate can be ensured by the sliding guiding action between the connecting plate and the vertical rod.

[0011] Preferably, balls are evenly installed on the lower end surface of the movable frame, and the balls can roll. The rolling action of the balls can facilitate fine-tuning of the position when installing the bridge bearing and can also facilitate separation of the movable frame from the bridge bearing.

[0012] Preferably, sliding rods are symmetrically fixed to the movable plate in front and back, and the sliding rods are slidably connected to the movable frame. When the movable plate moves, the sliding guide effect between the sliding rods and the movable frame can ensure that the movable plate performs stable linear motion.

[0013] Preferably, one end of a second spring is fixed on the movable plate, and the other end of the second spring is fixed on the movable frame. The elastic action of the second spring can provide a basic force for the automatic reset of the movable plate, thereby ensuring the normal operation of the device.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the bridge bearing hoisting equipment adopts an adjustment mechanism, which can perform preliminary position limiting when hoisting the bridge bearing. During the hoisting process, through the gravity of the bridge bearing and the transmission effect of the gear and the rack, the secondary position limiting fixation of the bridge bearing can be achieved, and the self-locking effect can be achieved under the action of gravity to avoid the loosening of the limit mechanism, thereby effectively ensuring the safety during the hoisting process. In combination with the position adjustment mechanism, the position of the bridge bearing can be conveniently adjusted during the installation process to ensure the accuracy of the installation position of the bridge bearing. The specific contents are as follows: 1. The bridge support hoisting equipment can adjust the distance between the two movable frames through the action of the bidirectional threaded rod and the connecting plate, so as to realize the clamping and limiting action of the bridge support. During the hoisting process, the fixed block is moved down by the gravity of the bridge support, and the bidirectional threaded rod can be further rotated by the transmission action between the gear and the rack. Then, the secondary limiting action of the bridge support can be realized by the action of the movable plate, the sliding rod and the second spring, so as to ensure the stability of the bridge support. At this time, the gear and the rack are meshed to realize self-locking. The heavier the bridge support, the higher the stability, so as to effectively avoid looseness and dangerous accidents during the hoisting process. 2. During the installation of the bridge bearing, the bridge bearing hoisting equipment can roughly adjust the position of the bridge bearing through the action of the second motor, the first threaded rod and the movable block, and then cooperate with the rolling action of the ball bearing in contact with the bridge pier to manually fine-tune the bridge bearing so as to achieve precise alignment of the bridge bearing and facilitate the installation of the bridge bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the device of the present invention; Figure 2 It is a schematic diagram of the overall side view of the stereoscopic structure of the device of the present invention; Figure 3 It is a bottom-up three-dimensional structural schematic diagram of the adjusting mechanism of the present invention; Figure 4 It is a schematic diagram of a side view of a three-dimensional structure of a movable block and an adjustable self-locking mechanism of the present invention; Figure 5 It is a schematic diagram of a front view cross-section of a three-dimensional structure of a movable block and an adjustable self-locking mechanism of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the self-locking mechanism and the limiting mechanism of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.

[0016] In the figure: 1. rotating seat; 2. lifting mechanism; 201. hydraulic extension arm; 202. hydraulic rod; 203. first motor; 204. winding roller; 205. wire rope; 206. guide wheel; 3. adjusting mechanism; 301. fixed frame; 302. second motor; 303. first threaded rod; 304. movable block; 305. guide rod; 4. adjusting self-locking mechanism; 401. fixed block; 402. vertical rod; 403. first spring; 404. horizontal rod; 405. two-way threaded rod; 406. gear; 407. rack; 5. limiting mechanism; 501. movable frame; 502. connecting plate; 503. ball; 504. movable plate; 505. sliding rod; 506. second spring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 7 The present invention provides a technical solution: a bridge bearing lifting device, including a rotating seat 1 and a lifting mechanism 2, the lifting mechanism 2 is installed on the rotating seat 1, the lifting mechanism 2 is interconnected with an adjusting mechanism 3, and the adjusting mechanism 3 is interconnected with an adjusting self-locking mechanism 4.

[0019] The hoisting mechanism 2 includes a hydraulic extension arm 201, a hydraulic rod 202, a first motor 203, a winding roller 204, a steel wire rope 205 and a guide wheel 206. The hydraulic extension arm 201 is rotatably connected to the rotating seat 1, and one end of the hydraulic rod 202 is rotatably connected to the hydraulic extension arm 201, and the other end of the hydraulic rod 202 is rotatably connected to the rotating seat 1; the hydraulic extension arm 201 is also fixed with a first motor 203, and the output end of the first motor 203 is fixed with a winding roller 204, and the winding roller 204 is connected to the hydraulic extension arm 201 with a bearing, and the winding roller 204 is connected to the steel wire rope 205 with each other; the steel wire rope 205 is connected to the fixed frame 301 with the guide wheel 206, and the bearing of the guide wheel 206 is connected to the hydraulic extension arm 201; When using the bridge support hoisting equipment, Figure 1-Figure 7 As shown, firstly, the rotating seat 1 is installed on the transport vehicle. Through the action of the rotating seat 1, the horizontal rotation of the whole device can be realized, so as to facilitate the subsequent lifting. After the installation is completed, when the bridge support is lifted, the hydraulic rod 202 is controlled to extend, so as to adjust the tilt angle of the hydraulic extension arm 201. Then, the hydraulic extension arm 201 is extended to adjust the lifting height. The winding roller 204 is driven to rotate by starting the first motor 203 to release the wire rope 205. With the guiding action of the guide wheel 206, the adjusting mechanism 3 and the limiting mechanism 5 can be moved downward, so as to lift the bridge support. The self-locking mechanism 4 includes a fixed block 401, a vertical rod 402, a first spring 403, a cross bar 404, a bidirectional threaded rod 405, a gear 406 and a rack 407. The fixed block 401 is arranged below the movable block 304. The fixed block 401 is fixed with a vertical rod 402. The vertical rod 402 and the movable block 304 are slidably connected. One end of the first spring 403 is fixed to the vertical rod 402. The other end of the first spring 403 is fixed to the movable block 304. The fixed block 401 is connected to a bidirectional threaded rod 405 with a bearing. The bidirectional threaded rod 405 is fixed with a gear 406. The threaded rod 405 is connected to the limiting mechanism 5. A gear 406 is also fixed on the bidirectional threaded rod 405. A rack 407 is arranged on the side of the gear 406. The rack 407 is fixed to the lower end surface of the movable block 304. The position of the limiting mechanism 5 is adjusted by rotating the bidirectional threaded rod 405. At this time, the gear 406 and the rack 407 are not meshed. The bridge support is limited by the limiting mechanism 5. During the hoisting process, the fixed block 401, the gear 406 and the limiting mechanism 5 are moved downward by the gravity of the bridge support. At this time, the gear 406 and the rack 407 are meshed to realize transmission. The guide rod 305 is slidably connected to the movable block 304, and the guide rod 305 is parallel to the first threaded rod 303; the rack 407 and the gear 406 can achieve transmission when they are meshed, and the distance between the lower end surface of the rack 407 and the fixed block 401 is greater than the distance between the upper end of the vertical rod 402 and the movable block 304; the limiting mechanism 5 includes a movable frame 501, a connecting plate 502, a ball 503, a movable plate 504, a sliding rod 505 and a second spring 506, and a connecting rod 506 is fixed on the movable frame 501. The connecting plate 502 is connected to the bidirectional threaded rod 405 through a thread, and the connecting plate 502 is connected to the vertical rod 402 in a sliding manner; the lower end surface of the movable frame 501 is evenly mounted with balls 503, and the balls 503 can roll; the movable plate 504 is symmetrically fixed with sliding rods 505, and the sliding rods 505 and the movable frame 501 are connected in a sliding manner; one end of a second spring 506 is fixed to the movable plate 504, and the other end of the second spring 506 is fixed to the movable frame 501; After the limiting mechanism 5 moves down and contacts the ground, Figure 1-Figure 7As shown, the distance between the two movable frames 501 is adjusted according to the width of the support hoisting, and the two-way threaded rod 405 is rotated. At this time, the gear 406 and the rack 407 are not engaged, ensuring the normal rotation of the two-way threaded rod 405, and the threaded connection between the two-way threaded rod 405 and the connecting plate 502 can be used to move the connecting plate 502, and the sliding guide effect between the connecting plate 502 and the cross bar 404 can ensure the stability of the movement of the connecting plate 502, thereby adjusting the distance between the two movable frames 501, so that the minimum distance between the two movable frames 501 is less than the width of the support hoisting, and the distance between the two movable plates 504 is slightly larger than the width of the support hoisting, and then the support hoisting is placed on the movable frame 501, and the one-time limit of the support hoisting can be achieved through the two movable frames 501. After placement, the winding roller 204 is driven to rotate in the opposite direction by controlling the first motor 203 to achieve the winding of the wire rope 205, thereby driving the adjustment mechanism 3 and the limiting mechanism 5 to move upward. , at this time, under the action of the bridge support's own gravity, the movable block 304 moves upward relative to the fixed block 401, so that the rack 407 moves relative to the gear 406, and the threaded connection between the rack 407 and the gear 406 can make the bidirectional threaded rod 405 rotate further, so that the distance between the movable frame 501 is further reduced. When the movable plate 504 contacts the workpiece, the movable plate 504 is forced to move, and the sliding guide effect between the slide bar 505 and the movable frame 501 can ensure the stability of the movement of the movable plate 504. At this time, the second spring 506 is forced to shrink until the second spring 506 shrinks to the limit position. At this time, the clamping and fixing effect of the bridge support can be achieved through the action of the movable plate 504 and the force of the second spring 506 on the movable plate 504, ensuring the stability of the bridge support, and at this time, the meshing of the rack 407 and the gear 406 can achieve a self-locking effect, avoiding the reverse rotation of the bidirectional threaded rod 405 during the lifting process to cause the limit mechanism 5 to loosen, thereby effectively ensuring the lifting safety; The adjustment mechanism 3 includes a fixed frame 301, a second motor 302, a first threaded rod 303, a movable block 304 and a guide rod 305. The second motor 302 is fixed on the fixed frame 301, the first threaded rod 303 is fixed on the second motor 302, the first threaded rod 303 is connected to the fixed frame 301 by a bearing, the first threaded rod 303 is connected to the movable block 304 by a thread, and the guide rod 305 is also fixed on the fixed frame 301; When the bridge bearing is hoisted onto the pier, Figure 1-Figure 7As shown, the limiting mechanism 5 is placed on the bridge pier. At this time, the ball 503 is in contact with the bridge pier. By controlling the second motor 302, the first threaded rod 303 can be driven to rotate. By cooperating with the threaded connection between the first threaded rod 303 and the movable block 304, the movable block 304 can be moved, thereby moving the limiting mechanism 5 and the bridge bearing to achieve coarse adjustment of the bridge bearing position. By cooperating with the rolling effect between the ball 503 and the bridge pier and manually pushing, the bridge bearing can be fine-tuned to ensure the accuracy of the bridge bearing installation position. Finally, the bridge bearing can be unlocked by rotating the two-way threaded rod 405 in the opposite direction, which is convenient for the installation of the bridge pier. This is the working principle of the bridge bearing lifting equipment.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge support hoisting device, comprising a rotating seat (1) and a hoisting mechanism (2), wherein the hoisting mechanism (2) is installed on the rotating seat (1), characterized in that: The hoisting mechanism (2) and the adjusting mechanism (3) are interconnected, and the adjusting mechanism (3) and the adjusting self-locking mechanism (4) are interconnected; The adjusting mechanism (3) comprises a fixing frame (301), a second motor (302), a first threaded rod (303), a movable block (304) and a guide rod (305); the fixing frame (301) is fixed with the second motor (302); the second motor (302) is fixed with the first threaded rod (303); the first threaded rod (303) is connected to the fixing frame (301) by a bearing; the first threaded rod (303) is connected to the movable block (304) by a thread; and the fixing frame (301) is also fixed with the guide rod (305); The adjusting self-locking mechanism (4) comprises a fixed block (401), a vertical rod (402), a first spring (403), a cross rod (404), a bidirectional threaded rod (405), a gear (406) and a rack (407); the fixed block (401) is arranged below the movable block (304); the fixed block (401) is fixed with a vertical rod (402); the vertical rod (402) and the movable block (304) are slidably connected; one end of the first spring (403) is fixed to the vertical rod (402); the other end of the first spring (403) is fixed to the movable block (304); a bearing is connected to the bidirectional threaded rod (405) on the fixed block (401); the bidirectional threaded rod (405) is fixed with a gear ( 406), the bidirectional threaded rod (405) and the limiting mechanism (5) are connected to each other, a gear (406) is also fixed on the bidirectional threaded rod (405), a rack (407) is arranged on the side of the gear (406), and the rack (407) is fixed to the lower end surface of the movable block (304). The position of the limiting mechanism (5) is adjusted by rotating the bidirectional threaded rod (405). At this time, the gear (406) and the rack (407) are not meshed, and the bridge support is limited by the limiting mechanism (5). During the lifting process, the fixed block (401), the gear (406) and the limiting mechanism (5) are moved downward by the gravity of the bridge support. At this time, the gear (406) and the rack (407) are meshed to realize transmission.

2. A bridge support hoisting device according to claim 1, characterized in that: The lifting mechanism (2) comprises a hydraulic extension arm (201), a hydraulic rod (202), a first motor (203), a winding roller (204), a steel wire rope (205) and a guide wheel (206); the hydraulic extension arm (201) is rotatably connected to the rotating seat (1); one end of the hydraulic rod (202) is rotatably connected to the hydraulic extension arm (201); and the other end of the hydraulic rod (202) is rotatably connected to the rotating seat (1).

3. A bridge support hoisting device according to claim 2, characterized in that: A first motor (203) is also fixed to the hydraulic extension arm (201), and a winding roller (204) is fixed to the output end of the first motor (203). The bearing of the winding roller (204) is connected to the hydraulic extension arm (201), and the winding roller (204) and the steel wire rope (205) are connected to each other.

4. A bridge support hoisting device according to claim 3, characterized in that: The steel wire rope (205) is connected to the fixed frame (301) via a guide wheel (206), and the guide wheel (206) is bearing-connected to the hydraulic extension arm (201).

5. The bridge support hoisting equipment according to claim 1, characterized in that: The guide rod (305) and the movable block (304) are slidably connected, and the guide rod (305) and the first threaded rod (303) are parallelly distributed.

6. The bridge support hoisting equipment according to claim 1, characterized in that: The rack (407) can achieve a transmission effect when meshing with the gear (406), and the distance between the lower end surface of the rack (407) and the fixed block (401) is greater than the distance between the upper end of the vertical rod (402) and the movable block (304).

7. The bridge support hoisting equipment according to claim 1, characterized in that: The limiting mechanism (5) comprises a movable frame (501), a connecting plate (502), a ball (503), a movable plate (504), a sliding rod (505) and a second spring (506); the connecting plate (502) is fixed to the movable frame (501), the connecting plate (502) is connected to the bidirectional threaded rod (405) via threads, and the connecting plate (502) and the vertical rod (402) are slidably connected.

8. The bridge support hoisting equipment according to claim 7, characterized in that: The lower end surface of the movable frame (501) is also evenly mounted with balls (503), and the balls (503) can roll.

9. The bridge support hoisting equipment according to claim 7, characterized in that: Sliding rods (505) are symmetrically fixed to the movable plate (504) in the front and rear directions, and the sliding rods (505) are slidably connected to the movable frame (501).

10. The bridge support hoisting equipment according to claim 9, characterized in that: One end of a second spring (506) is fixed on the movable plate (504), and the other end of the second spring (506) is fixed on the movable frame (501).

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