Hoisting device for bridge component

Abstract

The invention relates to the technical field of hoisting, in particular to a hoisting device for bridge components, which comprises a pulley yoke, a rotating shaft is rotatably connected to the inner side wall of the pulley yoke, permanent magnets are embedded in the side walls of the two ends of the rotating shaft, a conveying wheel is fixedly connected to the side wall of the rotating shaft, and rectangular blocks are symmetrically and fixedly connected to the inner side wall of the pulley yoke. A round hole is formed in the inner wall of the rectangular block, a sliding groove is formed in the inner wall of the round hole, a magnetic block is slidably connected into the sliding groove in a sealed mode and elastically connected with the inner wall of the sliding groove through a first spring, a rectangular cavity is formed in the inner wall of the rectangular block, and a sliding plug is slidably connected into the rectangular cavity in a sealed mode. The sliding groove is fixedly communicated with the rectangular cavity through a one-way communicating pipe. By arranging the conveying wheel, the permanent magnet, the sliding plug and other structures, maintenance oil is extruded to the spray head to be sprayed out and attached to the bristles, the bristles evenly brush the side portion of the steel rope, maintenance of the steel rope is completed, and then the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting and lifting, and in particular to a hoisting device for bridge components. Background Art

[0002] The classification of bridge components mainly includes superstructure, substructure and auxiliary components. Among them, the superstructure is composed of bridge deck, crossbeams, longitudinal beams, etc., which mainly bears vehicle loads; the substructure is composed of piers, abutments and foundations, which is responsible for transferring the load of the superstructure to the foundation; auxiliary components: such as bridge deck pavement, drainage and waterproofing system, railings, expansion joints and lighting, etc. These components ensure the safety, comfort and beauty of the bridge.

[0003] At present, when hoisting the auxiliary components of bridge components, it is often only necessary to use a hoisting device. The current hoisting device generally fixes the auxiliary components of the bridge components with steel ropes, and then uses a drive motor on the boom to drive the winch to rotate and wind the steel rope. However, if the drive motor fails during this process and causes power loss, the winch will reverse due to lack of traction, causing the auxiliary components of the bridge components and the steel rope to move in the opposite direction and fall, causing a safety accident. In addition, there is a lack of corresponding maintenance measures for the steel rope during use, which shortens the service life of the steel rope.‌ To this end, we proposed a lifting device for bridge components. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a hoisting device for bridge components.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A lifting device for bridge components comprises a pulley frame, the inner side wall of the pulley frame is rotatably connected to a rotating shaft, the side walls at both ends of the rotating shaft are embedded with permanent magnets, the side walls of the rotating shaft are fixedly connected to a transmission wheel, the inner side wall of the pulley frame is symmetrically fixedly connected to a rectangular block, the inner wall of the rectangular block is provided with a circular hole, the inner wall of the circular hole is provided with a sliding groove, the inside of the sliding groove is sealed and slidably connected with a magnetic block, the magnetic block is elastically connected to the inner wall of the sliding groove through a first spring, the inner wall of the rectangular block is provided with a rectangular cavity, the inside of the rectangular cavity is sealed and slidably connected with a sliding plug, the sliding groove is fixedly connected to the rectangular cavity through a one-way connecting pipe, a maintenance mechanism for maintaining the lifting steel rope and a driving mechanism for preventing the lifting steel rope from falling are provided inside the pulley frame, the two opposite inner side walls of the pulley frame are fixedly connected to a box body through a supporting rod, and the box The cam is fixedly connected to the bottom end of the spline groove, and the top wall of the spline groove is elastically connected to the inner wall of the spline groove by a second spring, and a round tube is embedded in the top wall of the round shaft, and a rotating joint is installed on the top wall of the round shaft, and a multi-joint tube body is installed on the rotating joint, and a first one-way tube is fixedly connected to the inner wall of the rectangular cavity, and the other end of the first one-way tube is fixedly connected to the multi-joint tube body.

[0006] Preferably, the side wall of the anti-fall plate is fixedly connected with a guide plate, the inner wall of the rectangular block is provided with a liquid storage chamber, the liquid storage chamber is fixedly connected with the slide groove through a third one-way tube, the liquid storage chamber is fixedly connected with the rectangular chamber through a one-way return tube, and the liquid storage chamber is fixedly connected with the multi-joint tube body through a one-way reflux tube.

[0007] Preferably, the round rod side wall is fixedly connected with a ratchet, the inner wall of the box body is provided with an adjustment groove, an adjustment block is slidably connected inside the adjustment groove, the adjustment block side wall is limitedly rotatably connected with an adjustment rod, and the adjustment rod side wall is fixedly connected with a pawl.

[0008] Preferably, a magnetic spring is fixedly connected to the side wall of the adjustment block, and the other end of the magnetic spring is fixedly connected to the inner wall of the adjustment groove.

[0009] Preferably, a torsion spring is sleeved and fixedly connected to the side wall of the round rod, and the other end of the torsion spring is fixedly connected to the inner wall of the box body.

[0010] Preferably, the maintenance mechanism includes a maintenance cavity opened on the inner wall of the rectangular block, the bottom wall of the pulley frame is fixedly connected to a support frame, the bottom side wall of the support frame is fixedly connected to a circular ring block, the inner wall of the circular ring block is fixedly connected to a plurality of bristles, and the inner wall of the circular ring block is embedded with a plurality of nozzles.

[0011] Preferably, a one-way liquid inlet pipe is fixedly connected to the inner wall of the maintenance cavity, and the other end of the one-way liquid inlet pipe is fixedly connected to the rectangular cavity. A one-way liquid outlet pipe is fixedly connected to the inner wall of the rectangular cavity, and one end of the one-way liquid outlet pipe away from the rectangular cavity is fixedly connected to multiple nozzles.

[0012] Preferably, two first conical wheels are fixedly connected to the side wall of the rotating shaft, and a second conical wheel is fixedly connected to the top side wall of the circular shaft, and the first conical wheel is meshingly connected to the adjacent second conical wheel.

[0013] Preferably, the circular hole is arranged on the side of the rotating shaft, a tension spring is fixedly connected to the side wall of the sliding plug, and the other end of the tension spring is fixedly connected to the inner wall of the rectangular cavity.

[0014] Compared with the prior art, the present invention has the following advantages: 1. When the external driving motor drives the capstan to rotate normally, by setting the transmission wheel, permanent magnet and sliding plug and other structures, the magnetic block intermittently squeezes the hydraulic oil filled in the slide groove into the rectangular cavity, so that the sliding plug reciprocates and seals in the rectangular cavity to squeeze the maintenance oil to the nozzle and spray it onto the bristles, which are evenly brushed on the side of the steel rope to complete the maintenance of the steel rope, thereby extending the service life; 2. When the external driving motor suddenly loses power during the hoisting process, the spline shaft drives the cam to rotate synchronously and move downward by setting structures such as sliding plugs, multiple one-way tubes and spline shafts. During the rotation of the cam, the anti-fall plate is pushed to rotate toward the side close to the steel rope through the adjacent guide plate, and the anti-fall plate drives the round rod to rotate synchronously. Then the ratchet will slide against the pawl, and the pawl can prevent the ratchet from reversing; 3. When the two anti-fall plates rotate synchronously to a certain angle, with the cooperation of the matching block, the two anti-fall plates will drive the anti-fall block to clamp and lock the steel rope through the driving plate to prevent the steel rope from continuing to fall, thus playing the role of anti-falling; 4. After the boom has safely placed the hoisted bridge component, the magnetic spring is energized, and the adjusting block drives the adjusting rod and the pawl to move a certain distance away from the ratchet, so that the pawl cannot limit the reverse rotation of the ratchet. Then, under the action of the torsion spring, the adjusting rod rotates in the opposite direction, so that the anti-fall block and the steel rope are out of the clamping and locking state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the appearance structure of a hoisting device for bridge components proposed by the present invention; Figure 2 This is a schematic diagram of the positional relationship between the first conical wheel and the second conical wheel in a hoisting device for bridge components proposed by the present invention; Figure 3 for Figure 2 A magnified schematic diagram of the structure of part A; Figure 4 A bottom view of a lifting device for a bridge component proposed by the present invention; Figure 5 This is a schematic diagram of the internal structure of a rectangular block in a lifting device for bridge components proposed by the present invention; Figure 6 for Figure 5 A magnified schematic diagram of the structure of part B; Figure 7 This is a schematic diagram of the structure inside a box in a hoisting device for bridge components proposed by the present invention; Figure 8 A schematic diagram of the connection relationship between a round shaft, a second conical wheel and a rotary joint in a hoisting device for a bridge component proposed by the present invention; Fig. 9 A schematic diagram of the positional relationship of a circular ring block, bristles and a nozzle in a lifting device for bridge components proposed by the present invention; Fig.10 The present invention provides a schematic diagram of the positional relationship among a central circular tube, a spline groove and a spline shaft of a lifting device for bridge components proposed by the present invention.

[0016] In the figure: 1, pulley frame; 2, rotating shaft; 3, transmission wheel; 4, round hole; 5, second conical wheel; 6, rotating joint; 7, multi-joint pipe body; 8, spline groove; 9, spline shaft; 10, cam; 11, second spring; 12, round pipe; 13, one-way return pipe; 14, first conical wheel; 15, permanent magnet; 16, rectangular block; 17, slide groove; 18, magnetic block; 19, third one-way pipe; 20, liquid storage chamber; 21, one-way connecting pipe; 22, rectangular chamber; 23, slide plug; 24, magnetic spring; 25, maintenance chamber ; 26. One-way liquid inlet pipe; 27. One-way liquid outlet pipe; 28. First one-way pipe; 29. ​​Tension spring; 30. Box body; 31. Round rod; 32. Ratchet; 33. Anti-fall plate; 34. Ratchet; 35. Torsion spring; 36. Anti-fall block; 37. Guide plate; 38. Support frame; 39. Ring block; 40. Bristles; 41. Spray head; 42. Matching block; 43. Horizontal plate; 44. Adjustment slot; 45. Adjustment block; 46. Adjustment rod; 47. Drive plate; 48. Round shaft; 49. First spring; 50. One-way return pipe. 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] Reference Figure 1 - Fig.10 A lifting device for bridge components includes a pulley frame 1, which is a U-shaped structure when viewed from top to bottom. The inner side wall of the pulley frame 1 is rotatably connected to a rotating shaft 2, and the side walls at both ends of the rotating shaft 2 are embedded with permanent magnets 15 (such as Figure 6 As shown in the figure, the side wall of the rotating shaft 2 is fixedly connected with the transmission wheel 3, the inner wall of the pulley frame 1 is symmetrically fixedly connected with a rectangular block 16, the inner wall of the rectangular block 16 is provided with a circular hole 4, the inner wall of the circular hole 4 is provided with a slide groove 17, the inner wall of the slide groove 17 is sealed and slidably connected with a magnetic block 18, the side wall of the magnetic block 18 is fixedly connected with a first spring 49, the other end of the first spring 49 is fixedly connected to the inner wall of the slide groove 17, the inner wall of the rectangular block 16 is provided with a rectangular cavity 22, the inner wall of the rectangular cavity 22 is sealed and slidably connected with a sliding plug 23, the inner wall of the slide groove 17 is fixedly connected with a one-way connecting pipe 21, the other end of the one-way connecting pipe 21 is fixedly connected with the rectangular cavity 22, and the one-way connecting pipe 21 is fixedly connected with the rectangular cavity 22. The connecting pipe 21 only allows the hydraulic oil inside the slide groove 17 to be squeezed into the rectangular cavity 22. A maintenance mechanism for maintaining the lifting steel rope and a driving mechanism for preventing the lifting steel rope from falling are provided inside the pulley frame 1. The two opposite inner walls of the pulley frame 1 are fixedly connected to the box body 30 through a support rod. The inner wall of the box body 30 is rotatably connected to a round rod 31. The side wall of the round rod 31 is fixedly connected to an anti-fall plate 33. The two anti-fall plates 33 are fixedly connected by a driving plate 47. The side wall of the driving plate 47 is limited in rotation with an anti-fall block 36. The anti-fall block 36 can rotate within a small range. A matching block 42 is installed on the inner wall of the pulley frame 1.

[0019] The driving mechanism includes a horizontal plate 43 symmetrically fixedly connected to the inner side wall of the pulley frame 1, and a circular shaft 48 (such as Figure 8 As shown in FIG. 1 ), the bottom wall of the circular shaft 48 is provided with a spline groove 8 (as shown in FIG. Fig.10As shown), a spline shaft 9 is provided inside the spline groove 8 for sealing and sliding, a cam 10 is fixedly connected to the bottom end of the spline shaft 9, the top wall of the spline shaft 9 is elastically connected to the inner wall of the spline groove 8 through a second spring 11, a round tube 12 is embedded and fixed on the top wall of the circular shaft 48, a rotary joint 6 is installed on the top of the circular tube 12, the rotary joint 6 is a prior art, the rotary joint 6 refers to a pipeline connection device, and the connected pipelines can rotate relatively, and can be used to transmit various media such as gas, liquid, oil, etc. A multi-joint pipe body 7 is installed on the rotary joint 6, and the multi-joint pipe body 7 can be fixedly connected to multiple pipe bodies, a first one-way pipe 28 is fixedly connected to the inner wall of the rectangular cavity 22, the other end of the first one-way pipe 28 is fixedly connected to the multi-joint pipe body 7, and the first one-way pipe 28 only allows the hydraulic oil inside the rectangular cavity 22 to enter the multi-joint pipe body 7.

[0020] The side wall of the anti-fall plate 33 is fixedly connected to a guide plate 37. After the cam 10 moves downward for a certain distance, it contacts the guide plate 37. The bottom end of the cam 10 is surrounded by an inclined surface structure. When the cam 10 moves downward, the bottom end of the cam 10 can still be displaced under the action of its inclined surface structure when it contacts the guide plate 37. The inner wall of the rectangular block 16 is provided with a liquid storage chamber 20. The liquid storage chamber 20 is fixedly connected to the slide groove 17 through the third one-way tube 19. The third one-way tube 19 only allows the liquid storage chamber 20 to 0 enters the slide groove 17, the liquid storage chamber 20 is fixedly connected with the rectangular chamber 22 through the one-way return pipe 50, the one-way return pipe 50 only allows the mineral oil in the rectangular chamber 22 to enter the liquid storage chamber 20, the liquid storage chamber 20 is fixedly connected with the multi-joint pipe body 7 through the one-way return pipe 13, the hydraulic oil in the spline groove 8 flows from the one-way return pipe 13 to the liquid storage chamber 20 through the round pipe 12, the rotary joint 6 and the multi-joint pipe body 7, and the liquid storage chamber 20 is filled with hydraulic oil.

[0021] like Figure 7 As shown, the side wall of the round rod 31 is fixedly connected to the ratchet 34, the inner wall of the box body 30 is provided with an adjustment groove 44, the inside of the adjustment groove 44 is slidably connected to an adjustment block 45, the side wall of the adjustment block 45 is limitedly connected to the adjustment rod 46 for rotation, the side wall of the adjustment rod 46 is fixedly connected to the pawl 32, and the adjustment rod 46 can only rotate within a certain angle range, so that the pawl 32 can still be used in conjunction when it is disengaged from the ratchet 34 and abuts against it again.

[0022] A magnetic spring 24 is fixedly connected to the side wall of the adjustment block 45, and the other end of the magnetic spring 24 is fixedly connected to the inner wall of the adjustment slot 44. The magnetic spring 24 is a prior art. After the magnetic spring 24 is energized, due to the electromagnetic induction phenomenon, the magnetic spring 24 interacts with the current in the external magnetic field to generate pulling forces of different sizes to control the tensile deformation and movement state of the magnetic spring 24, that is, the magnetic spring 24 can shrink a certain distance when energized.

[0023] A torsion spring 35 is sleeved and fixedly connected to the side wall of the round rod 31 , and the other end of the torsion spring 35 is fixedly connected to the inner wall of the box body 30 .

[0024] The maintenance mechanism includes a maintenance cavity 25 opened on the inner wall of the rectangular block 16, the maintenance cavity 25 is filled with maintenance oil, the bottom wall of the pulley frame 1 is fixedly connected to a support frame 38, the bottom side wall of the support frame 38 is fixedly connected to a circular block 39, the inner wall of the circular block 39 is fixedly connected to a plurality of bristles 40, and the inner wall of the circular block 39 is embedded with a plurality of nozzles 41.

[0025] A one-way liquid inlet pipe 26 is fixedly connected to the inner wall of the maintenance chamber 25, and the other end of the one-way liquid inlet pipe 26 is fixedly connected to the rectangular chamber 22. A one-way liquid outlet pipe 27 is fixedly connected to the inner wall of the rectangular chamber 22, and one end of the one-way liquid outlet pipe 27 away from the rectangular chamber 22 is fixedly connected to multiple nozzles 41. The one-way liquid inlet pipe 26 only allows the maintenance oil inside the maintenance chamber 25 to enter the rectangular chamber 22, and the one-way liquid outlet pipe 27 only allows the maintenance oil inside the rectangular chamber 22 to enter the nozzle 41 for spraying.

[0026] Two first conical wheels 14 are fixedly connected to the side wall of the rotating shaft 2, and a second conical wheel 5 is fixedly connected to the top side wall of the circular shaft 48. The first conical wheel 14 is meshedly connected with the adjacent second conical wheel 5.

[0027] The circular hole 4 is arranged at the side of the rotating shaft 2 . A tension spring 29 is fixedly connected to the side wall of the sliding plug 23 . The other end of the tension spring 29 is fixedly connected to the inner wall of the rectangular cavity 22 .

[0028] In the present invention, the pulley frame 1 is fixedly connected to the crane boom in the prior art, and an external driving motor drives the winch to rotate. The steel rope wound on the winch is in contact with the transmission wheel 3 in the pulley frame 1, and the steel rope passes through the circular ring block 39 and is used to lift the bridge component.

[0029] When the external driving motor drives the winch to rotate normally, the winch winds and tightens the steel rope, and the steel rope will drive the hoisted bridge component to lift upward. Since the steel rope will always be pressed against the transmission wheel 3 during this process, the steel rope will drive the transmission wheel 3 to rotate synchronously under the action of friction during the movement. When the transmission wheel 3 rotates, it will drive the rotating shaft 2 to rotate, and the permanent magnets 15 embedded in the side walls of the rotating shaft 2 at both ends will rotate synchronously. When the permanent magnet 15 approaches the magnetic block 18, since the permanent magnet 15 and the magnetic block 18 have the same polarity and magnetic repulsion to each other, the magnetic block 18 will be sealed and slid for a distance under the action of the magnetic repulsion, and then the hydraulic oil filled in the slide groove 17 will be squeezed into the rectangular cavity 22, so that the sliding plug 23 will slide to the right for a distance in the rectangular cavity 22 (such as Figure 6As shown in the figure, the sliding plug 23 squeezes the maintenance oil on the right side of the rectangular cavity 22 into the one-way liquid outlet pipe 27 for circulation, and finally the maintenance oil is sprayed out from the inside of the nozzle 41 and adheres to the bristles 40, and the bristles 40 evenly brush the side of the steel rope to complete the maintenance of the steel rope, thereby extending the service life.

[0030] When the permanent magnet 15 is away from the magnetic block 18, under the action of the first spring 49, the magnetic block 18 reversely seals and slides for a distance, and under the action of the tension spring 29, the sliding plug 23 reversely seals and slides for a distance, and then squeezes the hydraulic oil in the left part of the rectangular cavity 22 back into the liquid storage cavity 20 through the one-way return pipe 50. In the process of the reciprocating sealing sliding of the sliding plug 23, since the sliding plug 23 has a certain thickness, the sliding plug 23 always slides against the connecting part of the first one-way tube 28 and the rectangular cavity 22 to produce a blocking effect, so that the mineral oil cannot enter the first one-way tube 28 and circulate.

[0031] During the hoisting process, when the external driving motor suddenly loses power, the steel rope will move in the opposite direction, and the bridge component drives the steel rope to fall faster, so that the transmission wheel 3 drives the rotating shaft 2 to rotate faster. At this time, the rotating shaft 2 drives the permanent magnet 15 to rotate faster. Then, under the action of the magnetic repulsion force and the first spring 49, the magnetic block 18 will quickly and hermetically slide back and forth inside the slide groove 17. At this time, when the magnetic block 18 slides to the right in a sealed manner, the hydraulic oil inside the slide groove 17 will be squeezed into the rectangular cavity 22 through the one-way connecting pipe 21 (such as Figure 6As shown), since the reciprocating sliding speed of the magnetic block 18 is accelerated, the diameter of the one-way connecting tube 21 is larger than the diameter of the one-way return tube 50. Then, when the permanent magnet 15 moves away from the magnetic block 18, the hydraulic oil in the rectangular cavity 22 has not completely returned to the liquid storage chamber 20. The magnetic block 18 will draw part of the hydraulic oil from the liquid storage chamber 20 and then squeeze it into the rectangular cavity 22, so that the hydraulic oil continues to enter the rectangular cavity 22, and then the sliding plug 23 is continuously displaced to the right until the sliding plug 23 moves to the right to the end of the stroke and no longer abuts the connecting part of the first one-way tube 28 and the rectangular cavity 22 to produce a blocking effect. Subsequently, the hydraulic oil entering the rectangular cavity 22 will enter the multi-joint pipe body 7 through the first one-way tube 28 and circulate, and then pass through the multi-joint pipe body 7, The rotating joint 6 and the round tube 12 enter the spline groove 8 for circulation, pushing the spline shaft 9 to slide downward for a distance, and the spline shaft 9 drives the cam 10 fixedly connected thereto to move downward synchronously, so that the cam 10 moves to the same height as the guide plate 37. In addition, since the rotating shaft 2 will drive the second conical wheel 5 to rotate through the first conical wheel 14 during the rotation, the second conical wheel 5 drives the circular shaft 48 to rotate, and the circular shaft 48 drives the spline shaft 9 and the cam 10 to rotate through the spline groove 8, so that the cam 10 pushes the anti-fall plate 33 to rotate toward the side close to the steel rope through the adjacent guide plate 37 during the rotation, and the anti-fall plate 33 drives the round rod 31 to rotate synchronously, then the ratchet 34 will slide against the pawl 32, and the pawl 32 can prevent the ratchet 34 from reversing.

[0032] When the two anti-fall plates 33 rotate synchronously by a certain angle, with the cooperation of the matching block 42, the two anti-fall plates 33 will drive the anti-fall block 36 to clamp and lock the steel rope through the driving plate 47 to prevent the steel rope from continuing to fall, thereby playing an anti-fall role.

[0033] Then, after the hoisted bridge component is safely placed with the help of the crane arm, the magnetic spring 24 is energized to make the adjustment block 45 slide a certain distance inside the adjustment slot 44, and then the adjustment block 45 drives the adjustment rod 46 and the pawl 32 to move a certain distance away from the ratchet 34, so that the pawl 32 cannot limit the reverse rotation of the ratchet 34. Then, under the action of the torsion spring 35, the round rod 31 is rotated in the opposite direction by a certain angle, so that the anti-fall block 36 and the steel rope are released from the clamping and locking state.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lifting device for a bridge component, comprising a pulley frame (1), characterized in that: The inner side wall of the pulley frame (1) is rotatably connected to a rotating shaft (2), and permanent magnets (15) are embedded and installed in the side walls at both ends of the rotating shaft (2). The side walls of the rotating shaft (2) are fixedly connected to a transmission wheel (3). The inner side wall of the pulley frame (1) is symmetrically fixedly connected to a rectangular block (16), and a circular hole (4) is formed on the inner wall of the rectangular block (16). A sliding groove (17) is formed on the inner wall of the circular hole (4). A magnetic block (18) is sealed and slidably connected inside the sliding groove (17). The magnetic block (18) is connected to the magnetic block (18) through a first spring (49) and the inner wall of the sliding groove (17). The rectangular block (16) is elastically connected to the wall, the inner wall of the rectangular block (16) is provided with a rectangular cavity (22), the interior of the rectangular cavity (22) is sealed and slidably connected with a sliding plug (23), the sliding groove (17) is fixedly connected with the rectangular cavity (22) through a one-way connecting pipe (21), the pulley frame (1) is provided with a maintenance mechanism for maintaining the lifting steel rope and a driving mechanism for preventing the lifting steel rope from falling, the two opposite inner side walls of the pulley frame (1) are fixedly connected to a box body (30) through a supporting rod, and the inner wall of the box body (30) is rotatably connected to a round rod (31), The side wall of the round rod (31) is fixedly connected with an anti-falling plate (33), a driving plate (47) is fixedly connected between the two anti-falling plates (33), the side wall of the driving plate (47) is provided with an anti-falling block (36) for limited rotation, and the inner wall of the pulley frame (1) is provided with a matching block (42); the driving mechanism comprises a transverse plate (43) symmetrically fixedly connected to the inner wall of the pulley frame (1), a round shaft (48) is rotatably connected to the top wall of the transverse plate (43), a spline groove (8) is provided on the bottom wall of the round shaft (48), and a matching seal is slidably mounted inside the spline groove (8). A spline shaft (9) is provided, the bottom end of the spline shaft (9) is fixedly connected to a cam (10), the top wall of the spline shaft (9) is elastically connected to the inner wall of the spline groove (8) via a second spring (11), a round tube (12) is embedded and fixedly arranged on the top wall of the circular shaft (48), a rotary joint (6) is installed at the top end of the circular tube (12), a multi-joint tube body (7) is installed on the rotary joint (6), a first one-way tube (28) is fixedly connected to the inner wall of the rectangular cavity (22), and the other end of the first one-way tube (28) is fixedly connected to the multi-joint tube body (7).

2. A hoisting device for bridge components according to claim 1, characterized in that: The side wall of the anti-fall plate (33) is fixedly connected to a guide plate (37), the inner wall of the rectangular block (16) is provided with a liquid storage chamber (20), the liquid storage chamber (20) is fixedly connected to the slide groove (17) via a third one-way tube (19), the liquid storage chamber (20) is fixedly connected to the rectangular chamber (22) via a one-way return tube (50), and the liquid storage chamber (20) is fixedly connected to the multi-joint pipe body (7) via a one-way reflux tube (13).

3. A hoisting device for bridge components according to claim 1, characterized in that: A ratchet (34) is fixedly connected to the side wall of the round rod (31); an adjustment groove (44) is provided on the inner side wall of the box body (30); an adjustment block (45) is slidably connected inside the adjustment groove (44); an adjustment rod (46) is rotationally connected to the side wall of the adjustment block (45); and a ratchet (32) is fixedly connected to the side wall of the adjustment rod (46).

4. A hoisting device for bridge components according to claim 3, characterized in that: A magnetic spring (24) is fixedly connected to the side wall of the adjustment block (45), and the other end of the magnetic spring (24) is fixedly connected to the inner wall of the adjustment slot (44).

5. The hoisting device for bridge components according to claim 1, characterized in that: A torsion spring (35) is sleeved and fixedly connected to the side wall of the round rod (31), and the other end of the torsion spring (35) is fixedly connected to the inner wall of the box body (30).

6. The hoisting device for bridge components according to claim 1, characterized in that: The maintenance mechanism comprises a maintenance cavity (25) formed on the inner wall of the rectangular block (16); the bottom wall of the pulley frame (1) is fixedly connected to a support frame (38); the bottom side wall of the support frame (38) is fixedly connected to a circular block (39); the inner wall of the circular block (39) is fixedly connected to a plurality of bristles (40); and the inner wall of the circular block (39) is embedded with a plurality of nozzles (41).

7. A hoisting device for bridge components according to claim 6, characterized in that: A one-way liquid inlet pipe (26) is fixedly connected to the inner wall of the maintenance cavity (25), the other end of the one-way liquid inlet pipe (26) is fixedly connected to the rectangular cavity (22), and a one-way liquid outlet pipe (27) is fixedly connected to the inner wall of the rectangular cavity (22), one end of the one-way liquid outlet pipe away from the rectangular cavity (22) is fixedly connected to a plurality of nozzles (41).

8. The hoisting device for bridge components according to claim 1, characterized in that: Two first conical wheels (14) are fixedly connected to the side wall of the rotating shaft (2), a second conical wheel (5) is fixedly connected to the top side wall of the circular shaft (48), and the first conical wheel (14) is meshingly connected to the adjacent second conical wheel (5).

9. The hoisting device for bridge components according to claim 1, characterized in that: The circular hole (4) is arranged on the side of the rotating shaft (2); a tension spring (29) is fixedly connected to the side wall of the sliding plug (23); and the other end of the tension spring (29) is fixedly connected to the inner wall of the rectangular cavity (22).

Images