A self-locking fixing device for tower crane cables

Abstract

The present invention discloses a self-locking fixing device for tower crane cables, which includes a device main body. The device main body includes a device housing, an inlet, an outlet and a cable main body. An inlet is provided at the bottom end of the device housing, and an outlet is provided at the top end of the device housing. The cable main body penetrates through the inside of the device housing and passes through the inlet and the outlet. A limiting plate is fixedly connected to the inner wall of the device housing, and a limiting groove is provided inside the limiting plate. Self-locking mechanisms are arranged on both sides of the cable main body, and the self-locking mechanisms are slidably connected to the limiting grooves. A clamping mechanism is fixedly connected to the bottom end of the device housing, and the clamping mechanism is arranged on both sides of the cable main body. Ratchet mechanisms are attached to both sides of the part of the cable main body near the inlet. The present invention is convenient to install during use and has good protection for the cable.

Description

Technical Field

[0001] The present invention relates to the field of tower crane operation auxiliary facilities, and specifically to a self-locking fixing device for tower crane cables. Background Art

[0002] During the construction of high-rise buildings and port transportation, tower cranes are often used. During the operation, the top of the tower crane will rise according to the work needs. During the rising process of the tower crane, the cable needs to move upward with the top of the tower crane. During the rising process of the cable, a cable self-locking device is often used to assist the cable in rising, to prevent the cable from breaking due to its large self-weight after rising to a certain height, and to limit the swing of the cable.

[0003] In the use process of the existing cable self-locking devices, they can often only play a self-locking role for cables of a single diameter, and it is more inconvenient for the traditional devices to pass through the cable. During the process of the cable moving with the top of the tower crane, when the cable in the self-locking state releases the self-locking state, the cable may break due to the pulling force of a large force, seriously reducing the safety and practicability of the device. Therefore, there is an urgent need for a self-locking fixing device for tower crane cables to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a self-locking fixing device for tower crane cables to solve the problems in the above background art that the existing devices can only be used for cables of a single diameter, it is not convenient for the cable to pass through, and it is impossible to buffer the acceleration received by the cable during the rising process.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A self-locking fixing device for tower crane cables, including a device main body. The device main body includes a device housing, an inlet, an outlet, and a cable main body. The bottom end of the device housing is provided with an inlet, and the top end of the device housing is provided with an outlet. The cable main body penetrates through the inside of the device housing, and the cable main body penetrates through the inlet and the outlet. The inner wall of the device housing is fixedly connected with a limiting plate, and a limiting groove is opened inside the limiting plate. Self-locking mechanisms are arranged on both sides of the cable main body, and the self-locking mechanisms are slidably connected with the limiting grooves. The bottom end of the device housing is fixedly connected with a clamping mechanism, and the clamping mechanism is arranged on both sides of the cable main body. Ratchet mechanisms are attached to both sides of the part of the cable main body close to the inlet, and the ratchet mechanisms are rotatably connected with the clamping mechanism. The back of the device housing is fixedly connected with a buffer mechanism.

[0006] Preferably, the self-locking mechanism includes a rack plate, a self-locking drum, a limiting shaft and self-locking teeth. Self-locking drums are attached to both sides of the cable body, and limiting shafts are fixedly connected to the front and rear sides of the self-locking drums. The four groups of limiting shafts are all embedded inside the limiting grooves, and the top and bottom ends of the limiting shafts are all in contact with the surface of the limiting grooves. Self-locking teeth are fixedly connected to the sides of the four groups of limiting shafts away from the self-locking drums, and the bottom ends of the self-locking teeth are all engaged with the rack plate. The four groups of rack plates are all fixedly connected to the bottom end of the limiting groove.

[0007] Preferably, the clamping mechanism includes a fixed cylinder, a clamping rod, a clamping spring and a rotating shaft rod. Fixed cylinders are fixedly connected to both sides of the bottom end of the device housing, and clamping rods are slidably connected inside the fixed cylinders. A clamping spring is fixedly connected to the end of the clamping rod away from the cable body, and the end of the clamping spring away from the cable body is fixedly connected to the side of the inner wall of the fixed cylinder away from the cable body. A rotating shaft rod is rotatably connected to the end of the clamping rod close to the cable body.

[0008] Preferably, the ratchet mechanism includes an outer ratchet, limiting teeth, an inner ratchet, a movable cavity, a control rod and a support spring. Outer ratchets are attached to both sides of the part of the cable body close to the inlet. The middle position of the outer ratchet is fixedly connected to the rotating shaft rod. Limiting teeth are fixedly connected to the inner wall of the outer ratchet, and an inner ratchet is arranged inside the outer ratchet. The inner ratchet is fixedly connected to the end of the clamping rod close to the cable body, and a movable cavity is formed on the surface of the inner ratchet. A control rod is rotatably connected inside the movable cavity, and the end of the control rod away from the movable cavity is in contact with the inner wall of the outer ratchet. A support spring is fixedly connected to the end of the control rod close to the middle position of the inner ratchet, and the end of the support spring close to the middle position of the inner ratchet is fixedly connected to the inner wall of the movable cavity.

[0009] Preferably, the buffer mechanism includes a moving block, a buffer block, a buffer spring, a sliding groove, a fixed block and a limiting rod. A moving block is fixedly connected to the back of the device housing, and the end of the moving block away from the device housing is embedded inside the fixed block. Two groups of limiting rods are fixedly connected to the inner wall of the fixed block, and the limiting rods are slidably connected to the end of the moving block embedded inside the fixed block. Buffer blocks are in contact with the top and bottom ends of the moving block, and buffer springs are fixedly connected to the sides of the buffer blocks away from the moving block. The ends of the two groups of buffer springs away from the moving block are fixedly connected to the inner wall of the fixed block.

[0010] Preferably, the part of the self-locking drum in contact with the cable body is made of rubber material.

[0011] Preferably, a convex block is fixedly connected to the surface of the side of the clamping rod away from the cable body, and the convex block is slidably connected to the groove formed on the inner wall of the fixed cylinder.

[0012] Preferably, both ends of the two groups of buffer blocks are embedded inside the sliding grooves, and the sliding grooves are all opened on the inner wall surface of the fixed blocks. Both ends of the two groups of buffer blocks are inlaid with balls, and the ends of the balls away from the buffer blocks are all in contact with the inner walls of the sliding grooves.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The tower crane cable self-locking fixing device is provided with a limiting plate, a self-locking roller, a fixed cylinder and an external ratchet. During the use of the device, the cable is passed through the device housing from bottom to top. The top of the cable pushes the self-locking roller upward and opens it. The self-locking roller moves to both sides. The self-locking roller is designed to be movable, so that cables of different calibers can pass through, thereby improving the application range of the device; When passing the cable through the inside of the device housing, first pass the cable through between the two groups of external ratchets. The two groups of external ratchets are pushed by the fixed cylinder, the clamping rod and the clamping spring to initially clamp the cable, so that when the cable passes through the device housing, it can be initially clamped and fixed at the bottom end of the device housing, and the rotating external ratchet does not affect the operation of passing the cable through the device housing, effectively avoiding the cable from falling; The inlet is of a bowl-shaped structure, which is convenient for the cable to enter the inside of the device housing. Through such a design, the cable can pass through the inside of the device housing conveniently and stably, reflecting the stability and convenience of the device.

[0014] The tower crane cable self-locking fixing device is provided with a moving block and a fixed block. During the use of the device, the cable is in a self-locked state. When the cable is driven upward by the top of the tower crane, the cable is pulled by the top of the tower crane. At this time, the cable is in a self-locked state; During the process of the cable releasing the self-locking state, it will drive the device housing and the moving block to move upward. Under the action of the buffer block and the buffer spring, the upward moving moving block is buffered, so that the process of the cable contacting the self-locked state is extended, effectively avoiding the cable from being directly pulled, reducing the problem of cable breakage, and improving the safety and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view sectional schematic diagram of the first structure of the present invention;

[0016] Figure 2 It is a front view sectional schematic diagram of the second structure of the present invention;

[0017] Figure 3 It is for the present invention Figure 1 The enlarged schematic diagram of the structure at A in;

[0018] Figure 4 It is a partial top view schematic diagram of the cable main body, the limiting plate and the self-locking roller of the present invention;

[0019] Figure 5 It is a partial front view sectional schematic diagram of the cable main body, the clamping rod, the external ratchet and the internal ratchet of the present invention;

[0020] Figure 6 For the present invention Figure 5 Schematic enlarged view of the structure at position B in the present invention;

[0021] Figure 7 Schematic side view of the partial structure of the device housing, cable main body, moving block and fixed block of the present invention.

[0022] Figure 8 Schematic front view sectional view of the partial structure of the moving block and fixed block of the present invention.

[0023] In the figure: 100, device main body; 110, device housing; 111, inlet; 112, outlet; 120, cable main body; 210, limiting plate; 211, limiting groove; 212, rack plate; 220, self-locking roller; 221, limiting shaft; 222, self-locking teeth; 310, fixed cylinder; 311, clamping rod; 312, clamping spring; 320, outer ratchet; 321, rotating shaft rod; 322, limiting teeth; 330, inner ratchet; 331, movable cavity; 332, control rod; 333, support spring; 410, moving block; 411, buffer block; 412, buffer spring; 413, sliding groove; 414, ball; 420, fixed block; 421, limiting rod. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1-8 , an embodiment provided by the present invention:

[0026] A self-locking fixing device for tower crane cables, comprising a device main body 100. The device main body 100 includes a device housing 110, an inlet 111, an outlet 112 and a cable main body 120. The bottom end of the device housing 110 is provided with the inlet 111, and the top end of the device housing 110 is provided with the outlet 112. The cable main body 120 passes through the inside of the device housing 110, and the cable main body 120 passes through the inlet 111 and the outlet 112. The inner wall of the device housing 110 is fixedly connected with a limiting plate 210, and a limiting groove 211 is opened inside the limiting plate 210. Self-locking mechanisms are arranged on both sides of the cable main body 120, and the self-locking mechanisms are slidably connected with the limiting groove 211. The bottom end of the device housing 110 is fixedly connected with a clamping mechanism, and the clamping mechanism is arranged on both sides of the cable main body 120. Ratchet mechanisms are attached to both sides of the part of the cable main body 120 near the inlet 111, and the ratchet mechanisms are rotatably connected with the clamping mechanism. The back of the device housing 110 is fixedly connected with a buffer mechanism. Through such a design, during the use of the device, self-locking operation can be performed on the device, and the device can assist the operation process of the cable main body 120 passing through the device housing 110 during use, avoiding the cable main body 120 from falling, improving the convenience of the device, and during the process of the tower crane top driving the cable main body 120 and the device housing 110 to move upward, the chute mechanism effectively avoids the breakage of the cable main body 120, reflecting the good protection of the device.

[0027] The self-locking mechanism includes a rack plate 212, a self-locking roller 220, a limiting shaft 221 and self-locking teeth 222. Self-locking rollers 220 are attached to both sides of the cable main body 120, and limiting shafts 221 are fixedly connected to the front and back sides of the self-locking rollers 220. The four groups of limiting shafts 221 are all embedded inside the limiting groove 211, and the top and bottom ends of the limiting shafts 221 are both in contact with the surface of the limiting groove 211. Self-locking teeth 222 are fixedly connected to the side of the four groups of limiting shafts 221 away from the self-locking rollers 220, and the bottom ends of the self-locking teeth 222 are all meshed with the rack plate 212. The four groups of rack plates 212 are all fixedly connected to the bottom end of the limiting groove 211. Through such a design, during the use of the device, it can play a self-locking role on the cable main body 120, and the device can use cables with different calibers, reflecting the good adaptability and practicality of the device.

[0028] The clamping mechanism includes a fixed cylinder 310, a clamping rod 311, a clamping spring 312, and a rotating shaft rod 321. Both sides of the bottom end of the device housing 110 are fixedly connected with the fixed cylinder 310, and the clamping rod 311 is slidably connected inside the fixed cylinder 310. One end of the clamping rod 311 away from the cable main body 120 is fixedly connected with the clamping spring 312, and one end of the clamping spring 312 away from the cable main body 120 is fixedly connected with the inner wall of the fixed cylinder 310 on the side away from the cable main body 120. One end of the clamping rod 311 close to the cable main body 120 is rotatably connected with the rotating shaft rod 321. Through such a design, when the operator passes the cable main body 120 through the device housing 110, the cable main body 120 can be clamped and fixed at the bottom end of the device housing 110, avoiding the dropping of the cable main body 120 and improving the practicability and convenience of the device.

[0029] The ratchet mechanism includes an outer ratchet 320, a limit tooth 322, an inner ratchet 330, a movable cavity 331, a control rod 332, and a support spring 333. Both sides of the part of the cable main body 120 close to the inlet 111 are fitted with the outer ratchet 320, and the middle position of the outer ratchet 320 is fixedly connected with the rotating shaft rod 321. The inner wall of the outer ratchet 320 is fixedly connected with the limit tooth 322, and an inner ratchet 330 is arranged inside the outer ratchet 320. The inner ratchet 330 is fixedly connected with one end of the clamping rod 311 close to the cable main body 120, and a movable cavity 331 is formed on the surface of the inner ratchet 330. The control rod 332 is rotatably connected inside the movable cavity 331, and one end of the control rod 332 away from the movable cavity 331 is in contact with the inner wall of the outer ratchet 320. One end of the control rod 332 close to the middle position of the inner ratchet 330 is fixedly connected with the support spring 333, and one end of the support spring 333 close to the middle position of the inner ratchet 330 is fixedly connected with the inner wall of the movable cavity 331. Through such a design, the clamping mechanism can fix the cable main body 120 at the bottom end of the device housing 110 and does not affect the movement of the cable main body 120 into the device housing 110, improving the convenience and practicability of the device.

[0030] The buffer mechanism includes a moving block 410, a buffer block 411, a buffer spring 412, a sliding groove 413, a fixed block 420 and a limiting rod 421. The back of the device housing 110 is fixedly connected to the moving block 410, and one end of the moving block 410 away from the device housing 110 is embedded inside the fixed block 420. Two groups of limiting rods 421 are fixedly connected to the inner wall of the fixed block 420, and the limiting rods 421 are slidably connected to one end of the moving block 410 embedded inside the fixed block 420. Buffer blocks 411 are attached to the top and bottom of the moving block 410, and buffer springs 412 are fixedly connected to the sides of the buffer blocks 411 away from the moving block 410. One end of the two groups of buffer springs 412 away from the moving block 410 is fixedly connected to the inner wall of the fixed block 420. Through this design, during the process of the tower crane driving the cable main body 120 to move upward, it plays a buffering role in the process of releasing the self-locking of the cable main body 120, effectively avoiding the cable main body 120 from being broken by force, and improving the protection and practicality of the device.

[0031] The part of the self-locking roller 220 in contact with the cable main body 120 is made of rubber material. Through this design, the friction between the self-locking roller 220 and the cable main body 120 can be increased, making the self-locking of the device more tight. And rubber strips are glued to the surfaces of the two groups of outer ratchets 320. The rubber strips on the surface of the outer ratchet 320 can make the clamping of the cable main body 120 by the fixing mechanism more firm, avoiding the cable main body 120 from falling, and improving the practicality of the device.

[0032] A convex block is fixedly connected to the surface of the clamping rod 311 away from the cable main body 120, and the convex block is slidably connected to the groove opened on the inner wall of the fixed cylinder 310. Through this design, the clamping rod 311 is more stable during the moving process, improving the stability of the device.

[0033] Both ends of the two groups of buffer blocks 411 are embedded inside the sliding grooves 413, and the sliding grooves 413 are all opened on the surface of the inner wall of the fixed block 420. Ball bearings 414 are embedded at both ends of the two groups of buffer blocks 411, and one end of the ball bearings 414 away from the buffer blocks 411 is in contact with the inner wall of the sliding grooves 413. Through this design, when the buffer blocks 411 slide inside the fixed block 420, the buffer blocks 411 can be kept parallel to the moving block 410. The ball bearings can reduce the friction between the buffer blocks 411 and the sliding grooves 413, making the device more convenient to operate and improving the convenience and stability of the device.

[0034] Working principle: During the use of the device, the operator first needs to pass the cable body 120 through the device housing 110. First, pass the cable body 120 between two groups of outer ratchets 320. Driven by the clamping spring 312 and the clamping rod 311, the two groups of outer ratchets 320 clamp and fix the cable body 120. The outer ratchet 320 is rotatably connected to the clamping rod 311, so that the outer ratchet 320 does not affect the upward movement of the cable body 120. And when the cable body 120 may fall downward, through the cooperation of the control rod 332, the support spring 333 and the limit teeth 322, the outer ratchet 320 does not rotate, so that the cable body 120 does not fall downward. Then continue to move the cable body 120 upward until the cable body 120 pushes the two self-locking rollers 220 to the two sides, so that the cable body 120 passes through the device housing 110. Different-diameter cable bodies 120 can pass between the two movable self-locking rollers 220, improving the adaptability of the device. At this time, the self-locking rollers 220 are attached to the cable body 120 under the action of gravity. When the cable body 120 falls downward under the action of gravity, the self-locking rollers 220 attached to the cable body 120 are affected by the frictional force between the cable body 120 and the self-locking rollers 220 and move downward with the cable body 120. And through the cooperation of the self-locking teeth 222 and the rack plate 212, they rotate, making the fit between the two self-locking rollers 220 and the cable body 120 closer until the two self-locking rollers 220 lock the cable body 120.

[0035] During the use of the device, when the top of the tower crane drives the top of the cable body 120 to move upward, the cable body 120 locked by the two self-locking rollers 220 needs to be unlocked. At this time, there is a large frictional force between the cable body 120 and the self-locking rollers 220, so that the cable body 120 drives the self-locking rollers 220 to pull the device housing 110 upward. During the upward movement of the device housing 110, the moving block 410 moves with the device housing 110 and compresses the buffer block 411 and the buffer spring 412. During the compression of the buffer block 411 and the buffer spring 412, the locking of the cable body 120 is gradually released. Through such a design, it can play a buffering role for the device, extend the process of the cable body 120 unlocking, and effectively reduce the possibility of the cable body 120 being broken. The operation ends here.

[0036] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting.

Claims

1. A self-locking fixing device for tower crane cables, comprising a device main body (100). Characterized in that: The device main body (100) includes a device housing (110), an inlet (111), an outlet (112) and a cable main body (120). The bottom end of the device housing (110) is provided with an inlet (111), and the top end of the device housing (110) is provided with an outlet (112). The cable main body (120) penetrates through the device housing (110), and the cable main body (120) penetrates through the inlet (111) and the outlet (112). The inner wall of the device housing (110) is fixedly connected with a limiting plate (210), and a limiting groove (211) is opened inside the limiting plate (210). Self-locking mechanisms are arranged on both sides of the cable main body (120), and the self-locking mechanisms are slidably connected with the limiting groove (211). A clamping mechanism is fixedly connected to the bottom end of the device housing (110), and the clamping mechanism is arranged on both sides of the cable main body (120). Ratchet mechanisms are attached to both sides of the part of the cable main body (120) near the inlet (111), and the ratchet mechanisms are rotatably connected with the clamping mechanism. A buffer mechanism is fixedly connected to the back of the device housing (110). The self-locking mechanism includes a rack plate (212), a self-locking roller (220), a limiting shaft (221) and self-locking teeth (222). Self-locking rollers (220) are attached to both sides of the cable main body (120), and limiting shafts (221) are fixedly connected to the front and back sides of the self-locking rollers (220). All four groups of limiting shafts (221) are embedded inside the limiting groove (211), and the top and bottom ends of the limiting shafts (221) are in contact with the surface of the limiting groove (211). Self-locking teeth (222) are fixedly connected to the side of all four groups of limiting shafts (221) away from the self-locking rollers (220), and the bottom ends of the self-locking teeth (222) are engaged with the rack plate (212). All four groups of rack plates (212) are fixedly connected to the bottom end of the limiting groove (211). The clamping mechanism includes a fixed cylinder (310), a clamping rod (311), a clamping spring (312) and a rotating shaft rod (321). Fixed cylinders (310) are fixedly connected to both sides of the bottom end of the device housing (110), and clamping rods (311) are slidably connected inside the fixed cylinders (310). A clamping spring (312) is fixedly connected to the end of the clamping rod (311) away from the cable main body (120), and the end of the clamping spring (312) away from the cable main body (120) is fixedly connected to the inner wall of the fixed cylinder (310) on the side away from the cable main body (120). A rotating shaft rod (321) is rotatably connected to the end of the clamping rod (311) close to the cable main body (120). The ratchet mechanism includes an outer ratchet (320), a limit tooth (322), an inner ratchet (330), a movable cavity (331), a control rod (332) and a support spring (333). On both sides of the part of the cable main body (120) near the inlet (111), the outer ratchets (320) are attached. The middle position of the outer ratchet (320) is fixedly connected to the rotating shaft rod (321). The inner wall of the outer ratchet (320) is fixedly connected to the limit tooth (322), and the inner ratchet (330) is arranged inside the outer ratchet (320). The inner ratchet (330) is fixedly connected to one end of the clamping rod (311) close to the cable main body (120). An activity cavity (331) is formed on the surface of the inner ratchet (330). The control rod (332) is rotatably connected to the inside of the activity cavity (331), and one end of the control rod (332) away from the activity cavity (331) is attached to the inner wall of the outer ratchet (320). One end of the control rod (332) close to the middle position of the inner ratchet (330) is fixedly connected to the support spring (333), and one end of the support spring (333) close to the middle position of the inner ratchet (330) is fixedly connected to the inner wall of the activity cavity (331). The buffer mechanism includes a moving block (410), a buffer block (411), a buffer spring (412), a sliding groove (413), a fixed block (420) and a limit rod (421). The moving block (410) is fixedly connected to the back of the device housing (110), and one end of the moving block (410) away from the device housing (110) is embedded inside the fixed block (420). Two groups of limit rods (421) are fixedly connected to the inner wall of the fixed block (420), and the limit rods (421) are slidably connected to one end of the moving block (410) embedded inside the fixed block (420). The top and bottom of the moving block (410) are both attached to the buffer block (411), and buffer springs (412) are fixedly connected to the sides of the buffer blocks (411) away from the moving block (410). One ends of the two groups of buffer springs (412) away from the moving block (410) are fixedly connected to the inner wall of the fixed block (420).

2. A self-locking fixing device for a tower crane cable according to claim 1, characterized in that: The part where the self-locking roller (220) contacts the cable main body (120) is made of rubber material.

3. A self-locking fixing device for a tower crane cable according to claim 2, characterized in that: A convex block is fixedly connected to the surface of one side of the clamping rod (311) away from the cable main body (120), and the convex block is slidably connected to a groove formed in the inner wall of the fixed cylinder (310).

4. A self-locking fixing device for a tower crane cable according to claim 3, characterized in that: Both ends of the two groups of the buffer blocks (411) are embedded inside the sliding grooves (413), and the sliding grooves (413) are all formed on the inner wall surface of the fixing blocks (420). Both ends of the two groups of the buffer blocks (411) are inlaid with balls (414), and one ends of the balls (414) away from the buffer blocks (411) are all in contact with the inner walls of the sliding grooves (413).

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