Tail rope braking device and method of use

Abstract

The application discloses a tail rope brake device, which comprises a base, a front wheel and a rear wheel are arranged to rotate in the interior of the base, and the tail rope is arranged to pass between the front wheel and the rear wheel during winching braking; a middle wheel is arranged in the interior of the base and between the front wheel and the rear wheel, and the tail rope is arranged to pass below the middle wheel; a brake rubber block is arranged at the lower end of the clamping block, and the brake rubber block is used for brake locking when the tail rope is braked, which can increase the friction between the clamping block and the tail rope, achieve the effect of rapid braking, and avoid the direct friction between the clamping block and the tail rope to cause damage of the tail rope; then, a reset rod is arranged at the upper end of the clamping block, when the clamping block is locked to the tail rope, the clamping block and the tail rope can be separated by directly manually resetting the reset rod when resetting, the operation is simple and convenient, the braking and resetting of the tail rope are safer, and the operator is not damaged.

Description

Technical Field

[0001] This invention relates to the field of winch tail rope braking technology, specifically to a tail rope braking device and its usage method. Background Technology

[0002] A winch is one of the most commonly used pieces of machinery in power transmission line construction. It is mainly used for traction operations and is widely applied in various stages of line construction.

[0003] During the on-site construction of winches, the most common unexpected situation is winch runaway. Winch runaway means that when the winch is being used for normal traction, due to some uncontrollable reason, the traction rope wrapped around the winch rapidly pulls back in the opposite direction. If winch runaway occurs, the winch becomes ineffective, the traction rope will quickly pull back, causing the cable axis to move rapidly in the direction of the winch. If on-site personnel are unable to dodge in time, it will cause injury to them.

[0004] Chinese patent application CN105762697B discloses an anti-wearing device for power transmission line construction, comprising: a base for providing support; a detection component located on the base for detecting the movement direction of the winch traction rope; and a braking component located on the base and connected to the detection component. When the detection component detects reverse movement of the winch traction rope, it triggers the braking component to engage, thereby locking the winch traction rope. This invention can automatically detect the movement direction of the winch traction rope and promptly lock it when it moves in the opposite direction, preventing wear and tear and thus avoiding various accidents caused by wear and tear.

[0005] However, during use, the above solution is prone to loosening of the brake on the winch tail rope, and the reaction time is long and the locking speed is slow. Summary of the Invention

[0006] The purpose of this invention is to provide a tail rope braking device and a method of using it to solve the problems mentioned above.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A tail rope braking device includes a base, in which a front wheel and a rear wheel are rotatably mounted; a wheel frame is slidably mounted inside the base and located between the front wheel and the rear wheel, and a middle wheel is rotatably mounted below the wheel frame;

[0009] A locking block is rotatably disposed within the base and above the front wheel; a pull rod is rotatably disposed at one end of the locking block, and a connecting shaft block is disposed at one end of the pull rod;

[0010] A suspension plate is fixedly installed inside the base and above the wheel frame. A force limiting rod is installed above the wheel frame and passes through the suspension plate. A vertical plate is installed at the end of the suspension plate near the locking block. A shaft plate is installed at the end of the suspension plate away from the locking block. A connecting plate is rotatably installed at the end of the shaft plate.

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

[0012] The pull rod passes through the upright plate and is rotatably connected to one end of the connecting plate. The other end of the connecting plate is connected to the end of the force limiting rod. A trigger spring is sleeved on the pull rod between the upright plate and the connecting plate.

[0013] As a further aspect of the present invention, the connecting plate is V-shaped.

[0014] As a further aspect of the present invention, a braking rubber block is provided at the lower end of the card block.

[0015] As a further aspect of the present invention, a reset rod is provided at the upper end of the card block.

[0016] As a further aspect of the present invention: trigger grooves are symmetrically provided on both sides of the base, and the two sides of the wheel frame are slidably disposed in the trigger grooves through the rotating shaft of the middle wheel.

[0017] As a further aspect of the present invention: a force-limiting groove is provided at the end of the force-limiting rod, and a transmission shaft is provided at the end of the connecting plate and is slidably disposed in the force-limiting groove.

[0018] As a further aspect of the present invention: an interference hole is provided on the upright plate, and the tie rod passes through the interference hole.

[0019] As a further aspect of the present invention: the method of using the tail rope braking device includes the following steps:

[0020] Step 1: Open the locking block and pass the winch tail rope through the front wheel, middle wheel and rear wheel in sequence, and hold it with the tail rope reel-in / reel-out device;

[0021] Step 2: When the winch brake fails, a force will be generated instantaneously that pulls the tail rope forward. This force will drive the middle pulley to move upward, overcoming the resistance of the force-limiting spring, thereby driving the connecting plate to work.

[0022] The trigger spring, due to the rotation of the connecting plate, instantly drives the pull rod to lock the tail rope, thus achieving emergency braking of the tail rope;

[0023] Step 3: When a reset is required, push the reset lever above the locking block, then pass the winch tail rope through the front wheel, middle wheel, and rear wheel in sequence and pull it.

[0024] The beneficial effects of this invention are:

[0025] In this invention, the tail rope passes from above the front wheel, under the middle wheel, and then above the rear wheel. When the winch braking function is normal, the force-limiting spring presses against the wheel frame on the middle wheel, at which point the connecting plate is stationary, the trigger spring on the pull rod is not working, and the locking block is in the open state. When the winch braking function fails, a force is instantly generated in the tail rope, which drives the middle wheel to move upward to overcome the resistance of the force-limiting spring, thereby driving the connecting plate to work. Then, due to the rotation of the connecting plate, the trigger spring instantly drives the pull rod to lock the locking block and achieve emergency braking of the tail rope. The entire device does not require manual operation. When the winch tail rope fails, it can quickly perform a corresponding locking action on the winch tail rope, providing emergency braking of the tail rope and effectively playing a rapid protection role with a short reaction time. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is the overall structural cross-section of the invention. Figure 1 ;

[0029] Figure 3 This is a schematic diagram of the connection structure between the connecting plate and the shaft plate in this invention;

[0030] Figure 4 This is the cross-sectional view of the overall structure of the present invention. Figure 2 ;

[0031] Figure 5 This is a partial cross-sectional schematic diagram of the connection structure between the tie rod and the upright plate in this invention.

[0032] In the diagram: 1. Base; 10. Trigger groove; 11. Tail rope; 21. Front wheel; 22. Middle wheel; 221. Wheel frame; 222. Force limiting bar; 223. Force limiting spring; 224. Force limiting groove; 23. Rear wheel; 3. Suspension plate; 31. Vertical plate; 310. Interference hole; 32. Shaft plate; 33. Drive shaft; 4. Connecting plate; 5. Locking block; 51. Reset rod; 52. Brake rubber block; 6. Pull rod; 61. Trigger spring; 62. Connecting shaft block. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1 - Figure 5 As shown, the present invention is a tail rope braking device, including a base 1, a front wheel 21 and a rear wheel 23 rotatably disposed inside the base 1, and a tail rope 11 passing between the front wheel 21 and the rear wheel 23 during winch braking; a wheel frame 221 is slidably disposed inside the base 1 and between the front wheel 21 and the rear wheel 23, and a middle wheel 22 is rotatably disposed below the wheel frame 221; trigger grooves 10 are symmetrically opened on both sides of the base 1, and the two sides of the wheel frame 221 are slidably disposed in the trigger grooves 10 through the rotating shaft of the middle wheel 22, and the tail rope 11 passes through the bottom of the middle wheel 22;

[0035] In addition, a locking block 5 is rotatably installed inside the base 1 and above the front wheel 21 for locking and braking the tail rope 11. A braking rubber block 52 is installed at the lower end of the locking block 5. When braking the tail rope 11, the braking and locking are achieved by the braking rubber block 52. On the one hand, this increases the friction between the locking block 5 and the tail rope 11 to achieve a rapid braking effect. On the other hand, the braking rubber block 52 prevents the tail rope from being damaged due to direct friction between the locking block 5 and the tail rope 11.

[0036] Then, a reset rod 51 is set at the upper end of the locking block 5. When the locking block 5 locks the tail rope 11, the locking block 5 and the tail rope 11 can be separated by manually resetting the reset rod 51. The operation is simple and convenient, and the braking and reset of the tail rope 11 are safer and will not cause injury to the operator.

[0037] Example 2

[0038] In order to enable the locking block 5 to achieve the effect of self-locking according to the state of the tail rope 11, a pull rod 6 is rotatably set at one end of the locking block 5, and a connecting block 62 is set at one end of the pull rod 6;

[0039] Meanwhile, a suspension plate 3 is fixedly installed inside the base 1 and above the wheel frame 221. A limit rod 222 is installed above the wheel frame 221 and passes through the suspension plate 3. A vertical plate 31 is installed above the suspension plate 3 near the locking block 5. Then, a shaft plate 32 is installed above the suspension plate 3 away from the locking block 5. A connecting plate 4 is rotatably installed at the end of the shaft plate 32, and the connecting plate 4 is in the shape of a "V".

[0040] The tie rod 6 passes through the vertical plate 31 and is rotatably connected to one end of the connecting plate 4. Specifically, an interference hole 310 is opened on the vertical plate 31, and the tie rod 6 passes through the interference hole 310. Since the tie rod 6 is in a horizontal or inclined state in the locked and normal states, the size of the interference hole 310 needs to meet the requirements of the inclination and horizontality of the tie rod 6. The other end of the connecting plate 4 is connected to the end of the force limiting rod 222.

[0041] The force-limiting rod 222 has a force-limiting groove 224 at its end, and the connecting plate 4 has a transmission shaft 33 at its end, which is slidably disposed within the force-limiting groove 224. As the force-limiting rod 222 rises and falls, it drives the connecting plate 4 to rotate around the shaft plate 32. Therefore, during the rotation of the connecting plate 4, the transmission shaft 33 at its end rotates around the rotation axis on the shaft plate 32. Thus, as the force-limiting rod 222 moves upward, the force-limiting groove 224 also moves upward. As plate 4 rotates, the drive shaft 33 at its end can slide in the force limiting groove 224. Therefore, the connection between the force limiting groove 224 and the drive shaft 33 is an interference fit in the design. As the force limiting rod 222 moves upward, the force limiting groove 224 pushes the connecting plate 4 to rotate. At this time, the connecting block 62 can be moved by pulling the other end of the connecting plate 4. Then, the pull rod 6 is pulled and the locking block 5 is rotated by the pull rod 6. Then, the tail rope 11 is locked by the brake rubber block 52 below.

[0042] Then, a trigger spring 61 is sleeved on the pull rod 6 between the upright plate 31 and the connecting plate 4; at the same time, a force limiting spring 223 is sleeved on the force limiting rod 222 and below the suspension plate 3.

[0043] By passing the tail rope 11 from above the front wheel 21, below the middle wheel 22, and then above the rear wheel 23, when the wear braking function is normal, the force limiting spring 223 presses against the wheel frame 221 on the middle wheel 22. At this time, the connecting plate 4 is stationary, the trigger spring 61 on the pull rod 6 does not work, and thus the locking block 5 is in the open state.

[0044] When the winch brake fails, a force will be generated instantaneously in the tail rope 11 to move forward. This force will drive the middle wheel 22 to move upward to overcome the resistance of the force limiting spring 223, thereby driving the connecting plate 4 to work.

[0045] Then, the trigger spring 61 rotates due to the linkage plate 4, which instantly drives the pull rod 6 to lock the locking block 5 into the tail rope 11, thus achieving emergency braking of the tail rope 11.

[0046] The entire device requires no manual operation. When the winch tail rope 11 malfunctions, it can quickly lock the winch tail rope 11 and brake it in an emergency, effectively providing rapid protection. It has a short reaction time and responds quickly.

[0047] Example 3

[0048] The method for using the tail rope braking device includes the following steps:

[0049] Step 1: Open the locking block 5 and pass the winch tail rope 11 through the front wheel 21, middle wheel 22 and rear wheel 23 in sequence, and hold the tail rope 11 with the retracting device;

[0050] Step 2: When the winch braking function fails, a force will be generated instantaneously in the tail rope 11 to move forward. This force will drive the middle wheel 22 to move upward to overcome the resistance of the force limiting spring 223, thereby driving the connecting plate 4 to work.

[0051] When the connecting plate 4 rotates, the trigger spring 61 instantly drives the pull rod 6 to lock the locking block 5 into the tail rope 11, thus achieving emergency braking of the tail rope 11.

[0052] Step 3: When a reset is required, push the reset lever 51 above the locking block 5, and then pass the winch tail rope 11 through the front wheel 21, the middle wheel 22 and the rear wheel 23 in sequence and pull it.

[0053] Working principle of the invention:

[0054] In use, the braking device is fixed, and then the locking block 5 is opened so that the winch tail rope 11 passes through the front, middle and rear pulleys in sequence, and two people hold the tail rope 11 reeling device. When the winch braking function is normal, the force limiting spring 223 pushes against the wheel frame 221 on the middle wheel 22. At this time, the connecting plate 4 is stationary, the trigger spring 61 on the pull rod 6 does not work, so the locking block 5 is in the open state. When the winch braking function fails, a force will be generated instantaneously for the tail rope 11 to move forward. This force will drive the middle wheel 22 to move upward to overcome the resistance of the force limiting spring 223 and thus drive the connecting plate 4 to work.

[0055] Then, the trigger spring 61 rotates due to the linkage plate 4, which instantly drives the pull rod 6 to lock the locking block 5 into the tail rope 11, thus achieving emergency braking of the tail rope 11.

[0056] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A tail rope braking device, comprising a base (1), characterized in that, The base (1) is rotatably provided with a front wheel (21) and a rear wheel (23); a wheel frame (221) is slidably provided inside the base (1) and between the front wheel (21) and the rear wheel (23), and a middle wheel (22) is rotatably provided below the wheel frame (221). A locking block (5) is rotatably disposed inside the base (1) and above the front wheel (21); a pull rod (6) is rotatably disposed at one end of the locking block (5), and a connecting block (62) is disposed at one end of the pull rod (6); A suspension plate (3) is fixedly installed inside the base (1) and above the wheel frame (221). A limit rod (222) is installed above the wheel frame (221) and passes through the suspension plate (3). A vertical plate (31) is installed at the end of the suspension plate (3) near the locking block (5). A shaft plate (32) is installed at the end of the suspension plate (3) away from the locking block (5). A connecting plate (4) is rotatably installed at the end of the shaft plate (32). A force-limiting spring (223) is sleeved on the force-limiting rod (222) and below the suspension plate (3). The pull rod (6) passes through the upright plate (31) and is rotatably connected to one end of the connecting plate (4). The other end of the connecting plate (4) is connected to the end of the force limiting rod (222). A trigger spring (61) is sleeved on the pull rod (6) between the upright plate (31) and the connecting plate (4).

2. The tail rope braking device according to claim 1, characterized in that, The connecting plate (4) is V-shaped.

3. The tail rope braking device according to claim 1, characterized in that, The lower end of the card block (5) is provided with a braking rubber block (52).

4. The tail rope braking device according to claim 1, characterized in that, The upper end of the card block (5) is provided with a reset rod (51).

5. The tail rope braking device according to claim 1, characterized in that, The base (1) has symmetrical trigger grooves (10) on both sides, and the two sides of the wheel frame (221) are slidably set in the trigger grooves (10) through the rotating shaft of the middle wheel (22).

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

7. The tail rope braking device according to claim 1, characterized in that, An interference hole (310) is provided on the upright plate (31), and the tie rod (6) passes through the interference hole (310).

8. The method of using the tail rope braking device according to claim 1, characterized in that, Includes the following steps: Step 1: Open the locking block (5) and pass the winch tail rope (11) through the front wheel (21), middle wheel (22) and rear wheel (23) in sequence, and hold the tail rope (11) with the winding and unwinding device; Step 2: When the winch brake fails, a force will be generated instantaneously in the tail rope (11) to move forward. This force will drive the middle wheel (22) to move upward to overcome the resistance of the force limiting spring (223) and thus drive the connecting plate (4) to work. The trigger spring (61) rotates due to the linkage plate (4), which instantly drives the pull rod (6) to lock the locking block (5) and lock the tail rope (11), thus achieving emergency braking of the tail rope (11); Step 3: When a reset is required, push the reset lever (51) above the locking block (5), and then pass the winch tail rope (11) through the front wheel (21), middle wheel (22) and rear wheel (23) in sequence and then pull it.

Images