Tail rope brake

Abstract

The utility model discloses a tail rope brake device, comprising a base, a front wheel and a rear wheel are rotatably arranged inside the base, and during the capstan braking process, the tail rope is passed between the front wheel and the rear wheel; a middle wheel is arranged inside the base and between the front wheel and the rear wheel, and the tail rope is passed under the middle wheel; a brake rubber block is arranged at the lower end of the clamping block, and when the tail rope is braked, the brake rubber block is used to brake and lock it, on the one hand, the friction between the clamping block and the tail rope is increased to achieve a rapid braking effect, and on the other hand, the brake rubber block is arranged to avoid the situation that the tail rope is damaged due to direct friction between the clamping block and the tail rope; then, a reset rod is arranged at the upper end of the clamping block, and when the clamping block is reset after locking the tail rope, the clamping block can be separated from the tail rope by directly manually resetting the reset rod, the operation is simple and convenient, the braking and resetting safety of the tail rope is higher, and no injury is caused to the operator.

Description

Technical Field

[0001] The utility model relates to the technical field of capstan tail rope braking, in particular to a tail rope braking device. Background Art

[0002] Capstan is one of the most commonly used mechanical equipment in power transmission line construction. It is mainly used for traction operations and is widely used in various processes of line construction.

[0003] During the construction of the capstan, the most common unexpected situation is capstan runaway, which means that when the capstan is used for normal traction, due to some uncontrollable reasons, the traction rope wrapped around the capstan quickly withdraws in the opposite direction. If runaway occurs, the capstan loses its function, the traction rope will quickly withdraw, and the spool will quickly move in the direction of the capstan. If the on-site personnel cannot dodge in time, it will cause harm to the on-site personnel;

[0004] The utility model patent with publication number CN105762697B discloses a device for preventing the capstan from running away during the construction of power transmission lines, which includes: a base for providing support; a detection component located on the base for detecting the direction of movement of the capstan traction rope; a brake component located on the base and connected to the detection component; when the detection component detects the reverse movement of the capstan traction rope, the brake component is triggered to act, so that the brake component clamps the capstan traction rope. The utility model can automatically detect the direction of movement of the capstan traction rope, and clamp it in time when the traction rope moves in the reverse direction, preventing the occurrence of running away, thereby avoiding various accidents caused by running away;

[0005] However, during use of the above solution, the brake on the tail rope of the capstan grinder is prone to loosening, and the reaction time is long and the locking speed is slow. Utility Model Content

[0006] The purpose of the utility model is to provide a tail rope braking device to solve the above-mentioned background problems.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] The tail rope brake device comprises a base, wherein a front wheel and a rear wheel are rotatably arranged inside the base; a wheel frame is slidably arranged inside the base and between the front wheel and the rear wheel, and a middle wheel is rotatably arranged below the wheel frame;

[0009] A clamping block is rotatably arranged in the base and above the front wheel; a pull rod is rotatably arranged at one end of the clamping block, and a coupling block is arranged at one end of the pull rod;

[0010] A suspension plate is fixedly arranged in the base and above the wheel frame, a force limiting rod is arranged above the wheel frame and passes through the suspension plate, a vertical plate is arranged above the suspension plate at one end close to the block, an axis plate is arranged above the suspension plate at one end away from the block, and a linkage plate is rotatably arranged at the end of the axis plate;

[0011] A force-limiting spring is sleeved and arranged on the force-limiting rod and below the suspension plate;

[0012] The pull rod passes through the vertical plate and is rotatably connected to one end of the linkage plate through its end, and the other end of the linkage plate is connected to the end of the force-limiting rod; a trigger spring is sleeved on the pull rod and located between the vertical plate and the linkage plate.

[0013] As a further solution of the utility model: the linkage plate is in a "V" shape.

[0014] As a further solution of the utility model: a brake rubber block is arranged at the lower end of the clamping block.

[0015] As a further solution of the utility model: a reset rod is arranged at the upper end of the clamping block.

[0016] As a further solution of the utility model: triggering slide grooves are symmetrically opened on both sides of the base, and both sides of the wheel frame are slidably arranged in the triggering slide grooves through the rotating shaft of the middle wheel.

[0017] As a further solution of the utility model: a force-limiting sliding groove is provided at the end of the force-limiting rod, and a transmission shaft is provided at the end of the linkage plate and is slidably arranged in the force-limiting sliding groove.

[0018] As a further solution of the utility model: an interference hole is provided on the vertical plate, and the pull rod passes through the interference hole.

[0019] Beneficial effects of the utility model:

[0020] In the utility model, the tail rope is passed from the top of the front wheel to the bottom of the middle wheel and then to the top of the rear wheel. When the capstan brake function is normal, the force-limiting spring supports the wheel frame on the middle wheel. At this time, the linkage plate is in a stationary state, and the trigger spring on the pull rod does not work, so the clamping block is in an open state; when the capstan brake function fails, a forward force of the tail rope is instantly generated, and this force drives the middle wheel to move upward to overcome the resistance of the force-limiting spring, thereby driving the linkage plate to work; then, the trigger spring instantly drives the pull rod to clamp the tail rope due to the rotation of the linkage plate, thereby realizing emergency braking of the tail rope; the overall device does not require manual operation, and when the capstan tail rope fails, the capstan tail rope can be quickly locked accordingly, and the tail rope can be urgently braked, which effectively plays a role of rapid protection, with short reaction time and rapid reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 The utility model is the overall structural section Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the connection structure between the linkage plate and the shaft plate in the utility model;

[0025] Figure 4 The utility model is the overall structural section Figure 2 ;

[0026] Figure 5 It is a partial cross-sectional schematic diagram of the connection structure between the pull rod and the vertical plate in the utility model.

[0027] In the figure: 1, base; 10, trigger slide; 11, tail rope; 21, front wheel; 22, middle wheel; 221, wheel frame; 222, force limiting rod; 223, force limiting spring; 224, force limiting slide; 23, rear wheel; 3, suspension plate; 31, vertical plate; 310, interference hole; 32, shaft plate; 33, transmission shaft; 4, connecting plate; 5, block; 51, reset rod; 52, brake rubber block; 6, pull rod; 61, trigger spring; 62, connecting shaft block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1 - Figure 5 As shown, the utility model is a tail rope brake device, comprising a base 1, a front wheel 21 and a rear wheel 23 are rotatably arranged inside the base 1, and during the capstan braking process, the tail rope 11 is passed between the front wheel 21 and the rear wheel 23; a wheel frame 221 is slidably arranged inside the base 1 and between the front wheel 21 and the rear wheel 23, and a middle wheel 22 is rotatably arranged below the wheel frame 221, triggering chute 10 is symmetrically provided on both sides of the base 1, and both sides of the wheel frame 221 are respectively slidably arranged in the triggering chute 10 through the rotating shaft of the middle wheel 22, and the tail rope 11 passes through the bottom of the middle wheel 22;

[0030] In addition, a block 5 is rotatably provided inside the base 1 and above the front wheel 21 for locking and braking the tail rope 11. A brake rubber block 52 is provided at the lower end of the block 5. When the tail rope 11 is braked, the brake rubber block 52 is used to brake and lock it. On the one hand, the friction between the block 5 and the tail rope 11 is increased to achieve a rapid braking effect. On the other hand, the brake rubber block 52 is provided to avoid direct friction between the block 5 and the tail rope 11, which may cause damage to the tail rope.

[0031] Then, a reset rod 51 is set at the upper end of the clamping block 5. After the clamping block 5 locks the tail rope 11, when resetting, the clamping block 5 can be separated from the tail rope 11 by directly manually resetting the reset rod 51. The operation is simple and convenient, and the braking and resetting of the tail rope 11 are safer without causing damage to the operator.

[0032] Embodiment 2

[0033] In order to enable the clamping block 5 to achieve an autonomous locking effect according to the state of the tail rope 11, a pull rod 6 is rotatably provided at one end of the clamping block 5, and a coupling block 62 is provided at one end of the pull rod 6;

[0034] At the same time, a suspension plate 3 is fixedly arranged in the base 1 and above the wheel frame 221, a force limiting rod 222 is arranged above the wheel frame 221 and passes through the suspension plate 3, a vertical plate 31 is arranged above the suspension plate 3 at one end close to the block 5, and then, an axis plate 32 is arranged above the suspension plate 3 at one end away from the block 5, and a linkage plate 4 is rotatably arranged at the end of the axis plate 32, and the linkage plate 4 is in a "V" shape;

[0035] The pull rod 6 passes through the vertical plate 31 and is rotatably connected to one end of the linkage plate 4 through one end thereof. Specifically, an interference hole 310 is provided on the vertical plate 31, and the pull rod 6 passes through the interference hole 310. Since the pull rod 6 is in a horizontal or inclined state in a locked and normal state, the size of the interference hole 310 needs to meet the inclination and horizontal requirements of the pull rod 6. The other end of the linkage plate 4 is connected to the end of the force limiting rod 222.

[0036] The end of the force-limiting rod 222 is provided with a force-limiting slot 224, and the end of the linkage plate 4 is provided with a transmission shaft 33 and slidably arranged in the force-limiting slot 224. Since the lifting and lowering of the force-limiting rod 222 pushes the linkage plate 4 to rotate around the shaft plate 32, when the force-limiting rod 222 pushes the linkage plate 4 to rotate, the transmission shaft 33 at its end rotates with the rotation axis on the shaft plate 32 as the center of the circle when the linkage plate 4 rotates. Therefore, when the force-limiting rod 222 moves upward, the force-limiting slot 224 also moves upward. When the plate 4 rotates, the transmission shaft 33 at its end can slide in the force-limiting slot 224. Therefore, the connection between the force-limiting slot 224 and the transmission shaft 33 is also an interference fit in the design; when the force-limiting rod 222 moves upward, the linkage plate 4 is pushed to rotate under the action of the force-limiting slot 224. At this time, the coupling block 62 can be pulled by the other end of the linkage plate 4 to move; then the pull rod 6 is pulled and the block 5 is pulled by the pull rod 6 to rotate, and then the tail rope 11 is locked by the brake rubber block 52 below.

[0037] Then, a trigger spring 61 is sleeved and arranged on the pull rod 6 between the vertical plate 31 and the linkage plate 4 ; meanwhile, a force limiting spring 223 is sleeved and arranged on the force limiting rod 222 and below the suspension plate 3 .

[0038] By passing the tail rope 11 from above the front wheel 21 to below the middle wheel 22, and then passing it from above the rear wheel 23, when the grinding brake function is normal, the force limiting spring 223 presses against the wheel frame 221 on the middle wheel 22, at this time, the linkage plate 4 is in a stationary state, the trigger spring 61 on the pull rod 6 does not work, and the clamping block 5 is in an open state;

[0039] When the brake function of the capstan fails, a forward force of the tail rope 11 is instantly generated, which drives the middle wheel 22 to move upward to overcome the resistance of the force-limiting spring 223, thereby driving the linkage plate 4 to work;

[0040] Then, the trigger spring 61 rotates due to the linkage plate 4, instantly driving the pull rod 6 to clamp the clamping block 5 to the tail rope 11, thereby realizing emergency braking of the tail rope 11;

[0041] The whole device does not need manual operation. When the capstan tail rope 11 fails, the capstan tail rope 11 can be quickly locked and the tail rope 11 can be urgently braked, which effectively plays a role of rapid protection with short reaction time and rapid response.

[0042] The working principle of this utility model:

[0043] When in use, the brake device is fixed, and then the clamping block 5 is opened to pass the tail rope 11 of the capstan through the front, middle and rear pulleys in sequence and is pulled by two people or the tail rope 11 retracting and releasing device; when the brake function of the capstan is normal, the force-limiting spring 223 presses against the wheel frame 221 on the middle wheel 22, at this time, the linkage plate 4 is in a static state, and the trigger spring 61 on the pull rod 6 does not work, so the clamping block 5 is in an open state; when the brake function of the capstan fails, a forward force of the tail rope 11 is instantly generated, and this force drives the middle wheel 22 to move upward to overcome the resistance of the force-limiting spring 223, thereby driving the linkage plate 4 to work;

[0044] Then, the trigger spring 61 rotates due to the linkage plate 4, and instantly drives the pull rod 6 to clamp the clamping block 5 to the tail rope 11, so that the tail rope 11 is braked urgently.

[0045] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A tail rope brake device, comprising a base (1), characterized in that: A front wheel (21) and a rear wheel (23) are rotatably arranged inside the base (1); a wheel frame (221) is slidably arranged inside the base (1) and between the front wheel (21) and the rear wheel (23), and a middle wheel (22) is rotatably arranged below the wheel frame (221); A clamping block (5) is rotatably disposed inside the base (1) and located above the front wheel (21); a pull rod (6) is rotatably disposed at one end of the clamping block (5), and a coupling block (62) is disposed at one end of the pull rod (6); A hanging plate (3) is fixedly arranged in the base (1) and located above the wheel frame (221); a force limiting rod (222) is arranged above the wheel frame (221) and passes through the hanging plate (3); a vertical plate (31) is arranged above the hanging plate (3) at one end close to the block (5); an axis plate (32) is arranged above the hanging plate (3) at one end away from the block (5); and a linkage plate (4) is rotatably arranged at the end of the axis plate (32); A force limiting spring (223) is sleeved and arranged on the force limiting rod (222) and below the suspension plate (3); The pull rod (6) passes through the vertical plate (31) and is rotatably connected to one end of the linkage plate (4) through its end, and the other end of the linkage plate (4) is connected to the end of the force limiting rod (222); a trigger spring (61) is sleeved on the pull rod (6) and located between the vertical plate (31) and the linkage plate (4).

2. The tail rope brake device according to claim 1, characterized in that: The linkage plate (4) is in a "V" shape.

3. The tail rope brake device according to claim 1, characterized in that: A braking rubber block (52) is provided at the lower end of the clamping block (5).

4. The tail rope brake device according to claim 1, characterized in that: A reset rod (51) is provided at the upper end of the clamping block (5).

5. The tail rope brake device according to claim 1, characterized in that: The base (1) is symmetrically provided with triggering slide grooves (10), and the two sides of the wheel frame (221) are respectively slidably arranged in the triggering slide grooves (10) through the rotating shaft of the middle wheel (22).

6. The tail rope brake device according to claim 1, characterized in that: The end of the force-limiting rod (222) is provided with a force-limiting sliding groove (224), and the end of the linkage plate (4) is provided with a transmission shaft (33) and is slidably disposed in the force-limiting sliding groove (224).

7. The tail rope brake device according to claim 1, characterized in that: The vertical plate (31) is provided with an interference hole (310), and the pull rod (6) passes through the interference hole (310).

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