A speed-difference self-controller

Abstract

The utility model relates to safety protection equipment technical field, concretely is a speed difference self -controller, including lower casing and upper casing, the both sides of lower casing and upper casing are all set up with a plurality of thread holes, the inner chamber of a plurality of thread holes all are connected with fastening tight bolt threadedly, the bottom of lower casing and upper casing all are set up with the rope outlet, the top of lower casing and upper casing all are fixedly connected with first hook, the utility model discloses a protection subassembly is set up in the rope outlet, utilizes the cooperation of gyro wheel and protection ring, the sliding friction of steel wire rope is converted into rolling friction, effectively reduces the direct wear and tear of steel wire rope and rope outlet, prolongs the service life of steel wire rope, reduces the safety risk of breakage due to wear and tear, the upper casing and lower casing are connected through the thread hole and fastening tight bolt, and the utility model discloses convenient to disassemble and maintain, the modularization design (such as protection subassembly, rotating subassembly, locking subassembly) of each component module can be independently overhauled or replaced, reduces the later maintenance cost, and improves the practicability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of safety protection equipment technology, specifically to a speed difference controller. Background Technology

[0002] A speed differential, also known as a fall arrestor, is a protective product that uses the difference in the falling speed of an object for self-control. It can be used from a high position and at a low position. To use it, simply pass the nylon rope over a sturdy, blunt-edged structure above, hook the hook on the nylon rope into the "n"-shaped ring, and hook the hook on the steel wire rope into the semi-circular ring on the safety belt.

[0003] During the winding and unwinding process, the wire rope of a traditional speed differential controller often rubs directly against the edge of the rope outlet. Especially during frequent use or emergency braking, the friction causes wear, broken wires, or even breakage of the wire rope surface, which seriously affects the safety and service life of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a speed difference controller to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a speed difference controller, comprising a lower housing and an upper housing, wherein multiple threaded holes are provided on both sides of the lower housing and the upper housing, and fastening bolts are threadedly connected to the inner cavities of the multiple threaded holes; a rope outlet is provided at the bottom of the lower housing and the upper housing, and a first hook is fixedly connected to the top of the lower housing and the upper housing.

[0006] A protective assembly is disposed in the inner cavity of the rope outlet of the lower housing. The protective assembly includes a connecting shaft rotatably connected to the bottom of the inner cavity of the rope outlet of the lower housing via bearings. Both ends of the connecting shaft are connected to the connecting frame, and a roller passes through the middle of the connecting shaft, with the roller positioned between the connecting frames.

[0007] A rotating assembly is disposed in the inner cavity of the lower housing.

[0008] As a preferred technical solution of this utility model, a connecting seat is fixedly installed at the bottom of the connecting frame, and a wire rope channel is provided between the connecting seat and the connecting frame.

[0009] As a preferred embodiment of this utility model, the outer ring of each roller is fitted with a protective ring, and the protective ring is made of an impact-resistant reinforced material.

[0010] As a preferred embodiment of this utility model, the rotating assembly includes a rotating shaft rotatably connected to the middle position of the inner cavity of the lower housing via a bearing. A rotating disk is fitted around the outer ring of the rotating shaft, and a steel wire rope is wound around the outer ring of the rotating disk. A buffer post is fixedly connected to the bottom of the steel wire rope, and a second hook is fixedly connected to the bottom of the buffer post. Two ratchet wheels are fitted around the outer ring of the rotating disk, and a circular groove is formed on the top of the rotating disk. A coil spring is provided in the inner cavity of the circular groove, and the two ends of the coil spring are fixedly connected to the inner wall of the circular groove and the outer wall of the rotating shaft, respectively.

[0011] As a preferred embodiment of this utility model, the outer surface of the coil spring is coated with a tin-plated layer, and a locking assembly is disposed in the inner cavity of the lower housing.

[0012] As a preferred embodiment of this utility model, the locking assembly includes a vertical block fixedly connected to the inner cavity of the lower housing and a cylindrical connecting rod rotatably connected by a bearing. The cylindrical connecting rod is provided with two pawls, and the outer ring of the cylindrical connecting rod is fitted onto the connecting tube connecting the two pawls. A tension spring is fixedly connected between the pawls and the vertical block.

[0013] As a preferred embodiment of this utility model, both pawls are configured in a "V" shape, and the outer surface of the tension spring is coated with a tin-plated layer.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) By setting a protective component at the rope outlet, the sliding friction of the wire rope is converted into rolling friction by the cooperation of the roller and the protective ring. This effectively reduces the direct wear between the wire rope and the rope outlet, extends the service life of the wire rope, and reduces the safety risk of breakage due to wear. The upper and lower shells are connected to the fastening bolts through threaded holes, which facilitates disassembly and maintenance. The modular design of each component (such as the protective component, the rotating component, and the locking component) allows for independent inspection or replacement, reducing the later maintenance cost and improving the practicality of the equipment.

[0016] (2) By setting up a double ratchet and pawl, the reliability of this utility model can be improved by double locking. Even if one group fails to lock in time due to wear, the other group can still be triggered independently. At the same time, the two symmetrically set structures can distribute the force evenly and reduce the risk of jamming. When the two pawls are lifted by centrifugal force at the same time, the resultant force of pushing into the ratchet wedge is greater, which can accelerate the self-locking response and shorten the braking time. In addition, during the locking process, the two groups of components alternately or simultaneously bear impact and friction, which can also disperse wear and extend the service life of the components. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This utility model Figure 1 Overall schematic diagram of the internal structure;

[0020] Figure 3 This utility model Figure 1 A schematic diagram of the overall structure of the central protective component;

[0021] Figure 4 This utility model Figure 1 Overall structural schematic diagram of the rotating component;

[0022] Figure 5 This utility model Figure 1 A schematic diagram of the overall structure of the locking assembly.

[0023] Figure label:

[0024] 1. Lower housing; 101. Upper housing; 102. Threaded hole; 103. Fastening bolt; 104. Rope outlet; 105. First hook; 2. Protective assembly; 201. Connecting seat; 202. Connecting frame; 203. Wire rope channel; 204. Roller; 205. Connecting shaft; 3. Rotating assembly; 301. Rotating shaft; 302. Rotating disk; 303. Wire rope; 304. Buffer column; 305. Second hook; 306. Ratchet; 307. Circular groove; 308. Coil spring; 4. Locking assembly; 401. Pawl; 402. Cylindrical connecting rod; 403. Connecting tube; 404. Tension spring. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0026] Example 1:

[0027] Please see the appendix Figure 1 and attached Figure 2 With appendix Figure 3As shown, a speed difference controller includes: a lower housing 1 and an upper housing 101. Both sides of the lower housing 1 and the upper housing 101 are provided with multiple threaded holes 102. Fastening bolts 103 are threadedly connected to the inner cavities of the multiple threaded holes 102. Both the lower housing 1 and the upper housing 101 are provided with rope outlets 104 at their bottoms. Both the lower housing 1 and the upper housing 101 are fixedly connected with first hooks 105 at their tops.

[0028] The protective component 2 is disposed in the inner cavity of the rope outlet 104 located in the lower housing 1. The protective component 2 includes a connecting shaft 205 rotatably connected to the bottom of the inner cavity of the rope outlet 104 located in the lower housing 1 via bearings. The two ends of the connecting shaft 205 are connected to the connecting frame 202. The middle of the connecting shaft 205 passes through a roller 204, and the roller 204 is located between the connecting frames 202.

[0029] Rotating component 3 is disposed in the inner cavity of the lower housing 1.

[0030] A connecting seat 201 is fixedly installed at the bottom of the connecting frame 202, and a wire rope channel 203 is provided between the connecting seat 201 and the connecting frame 202.

[0031] The outer ring of each roller 204 is fitted with a protective ring, and the protective ring is made of an impact-resistant reinforced material.

[0032] Specifically, the roller 204 in the protective component 2 can rotate flexibly within the rope outlet 104. When the wire rope 303 passes through the rope outlet 104, the roller 204 and the protective ring of its outer ring made of impact-resistant material can reduce the friction between the wire rope 303 and the rope outlet 104, thus protecting the wire rope 303.

[0033] As can be seen from the above, when the wire rope 303 passes through the outlet 104, the surface of the wire rope 303 contacts the protective ring of the roller 204. Since the protective ring is made of impact-resistant reinforced material, it can buffer the direct friction between the wire rope 303 and the edge of the outlet 104, reducing wear. In addition, the impact-resistant reinforced material of the protective ring can absorb vibration during the friction process, reducing fatigue damage to the wire rope 303. When the wire rope 303 moves, it drives the roller 204 to rotate around the connecting shaft 205. The rotation of the roller 204 converts the sliding friction of the wire rope 303 into rolling friction, further reducing friction loss. The lower housing 1 and the upper housing 101 are removed and separated from the threaded hole 102 through multiple fastening bolts 103.

[0034] Example 2:

[0035] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 With appendix Figure 5As shown, the rotating assembly 3 includes a rotating shaft 301 rotatably connected to the middle position of the inner cavity of the lower housing 1 via bearings. A rotating disk 302 is fitted around the outer ring of the rotating shaft 301. A steel wire rope 303 is wound around the outer ring of the rotating disk 302. A buffer post 304 is fixedly connected to the bottom of the steel wire rope 303. A second hook 305 is fixedly connected to the bottom of the buffer post 304. Two ratchet wheels 306 are fitted around the outer ring of the rotating disk 302. A circular groove 307 is formed on the top of the rotating disk 302. A coil spring 308 is installed inside the circular groove 307. The two ends of the coil spring 308 are respectively connected to… The inner wall of the circular groove 307 is fixedly connected to the outer wall of the rotating shaft 301. The outer surface of the coil spring 308 is coated with a tin-plated layer. The locking assembly 4 is located in the inner cavity of the lower housing 1. The locking assembly 4 includes a vertical block fixedly connected to the inner cavity of the lower housing 1 and a cylindrical connecting rod 402 rotatably connected by a bearing. Two pawls 401 are fitted on the outer ring of the cylindrical connecting rod 402. A tension spring 404 is fixedly connected between the vertical block and the pawls 401. Both pawls 401 are V-shaped. The outer surface of the tension spring 404 is coated with a tin-plated layer.

[0036] Specifically, the ratchet 306 rotates, causing the tip of the pawl 401 to rotate. The tension spring 404 resets the pawl 401, and the tail of the pawl 401 does not contact the cylindrical connecting rod 402, allowing the rotating disk 302 to rotate freely. When falling, the wire rope 303 drives the rotating disk 302 to rotate at high speed. The centrifugal force of the ratchet 306 is greater than the constraint force of the tension spring 404, causing the tip of the pawl 401 to lift up and the tail to engage with the groove of the ratchet 306, preventing rotation and achieving self-locking to prevent falling.

[0037] As can be seen from the above, when the two ratchet wheels 306 rotate normally, the rotation of the ratchet wheel 306 drives the tip of the pawl 401 to rotate. At this time, the tension spring 404 pulls the tip of the pawl 401 to rotate through its own elasticity, causing it to reset, thus preventing the tail of the pawl 401 from contacting the cylindrical connecting rod 402. When the device falls during operation, the wire rope 303 drives the rotating disk 302 to rotate at high speed, which in turn drives the ratchet wheel 306 to rotate at high speed. The high-speed rotation of the ratchet wheel 306 contacts one end of the pawl 401. The centrifugal force generated at this time is greater than the restraining force of the tension spring 404, causing the tip of the pawl 401 to quickly lift up, causing the tail of the pawl 401 to rotate towards the ratchet wheel 306. The tail of the pawl 401 rotates and pushes into the groove of the ratchet wheel 306, preventing the ratchet wheel 306 from rotating, thus completing the self-locking and preventing the device from falling during operation. Falling poses a safety hazard, and the two ratchet wheels 306 and pawls 401 can improve reliability through double locking. Even if one set fails to lock in time due to wear, the other set can still be triggered independently. At the same time, the two sets of structures are symmetrically arranged to distribute the force evenly and reduce the risk of jamming. When the two pawls 401 are lifted by centrifugal force at the same time, the resultant force of pressing into the ratchet wheel 306 is greater, which can accelerate the self-locking response and shorten the braking time. In addition, during the locking process, the two sets of components alternately or simultaneously bear impact and friction, which can also disperse wear and extend the service life of the components. Meanwhile, the force of the coil spring 308 returning to its original position after being stretched drives the rotating disk 302 to rotate. The rotation of the rotating disk 302 winds up the wire rope 303. The coil spring 308 and tension spring 404, which have a tin-plated outer surface, can prevent corrosion and breakage under long-term use.

[0038] Working principle: Under normal working conditions, the lower housing 1 and the upper housing 101 are connected by fastening bolts 103 to form a closed cavity. The first hook 105 and the second hook 305 are used to fix objects and operators, respectively. During normal movement, the wire rope 303 slowly pulls the rotating disk 302 to rotate, which drives the outer ratchet 306 to rotate synchronously. At this time, the rotation of the ratchet 306 pushes the tip of the pawl 401 to rotate. However, due to the low speed, the centrifugal force is less than the constraint force of the tension spring 404. The tail of the pawl 401 separates from the ratchet 306, and the system operates freely. At the same time, the coil spring 308 is in an energy storage state, providing reset power for the wire rope 303 to be wound up. The roller 204 in the protective component 2 rotates with the movement of the wire rope 303, and the friction loss is reduced by the protective ring.

[0039] In the event of an emergency braking situation, if the operation is accidentally interrupted by a fall, the wire rope 303 will be pulled out rapidly, causing the rotating disk 302 to rotate at high speed. The ratchet 306 will rotate at a sudden speed, and the resulting centrifugal force will break through the constraint force of the tension spring 404. At this time, the tip of the pawl 401 will lift up, and the tail will quickly push into the groove of the ratchet 306 to prevent the rotating disk 302 from rotating, thus achieving self-locking. At the same time, the coil spring 308 will reset and drive the rotating disk 302 to wind up the wire rope 303. The buffer column 304 will absorb the impact force of the fall, thereby reducing injury.

[0040] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A speed difference automatic controller, characterized in that, include: The lower housing (1) and the upper housing (101) are provided with multiple threaded holes (102) on both sides of the lower housing (1) and the upper housing (101). Fastening bolts (103) are threaded into the inner cavities of the multiple threaded holes (102). Rope outlets (104) are provided at the bottom of the lower housing (1) and the upper housing (101). First hooks (105) are fixedly connected to the top of the lower housing (1) and the upper housing (101). The protective component (2) is disposed in the inner cavity of the rope outlet (104) of the lower housing (1). The protective component (2) includes a connecting shaft (205) rotatably connected to the bottom of the inner cavity of the rope outlet (104) of the lower housing (1) via a bearing. The two ends of the connecting shaft (205) are connected to the connecting frame (202). The middle of the connecting shaft (205) is through a roller (204), and the roller (204) is located between the connecting frames (202). Rotating assembly (3) is disposed in the inner cavity of the lower housing (1).

2. The speed difference controller as described in claim 1, characterized in that: The bottom end of the connecting frame (202) is fixedly installed with a connecting seat (201), and a wire rope channel (203) is provided between the connecting seat (201) and the connecting frame (202).

3. The speed difference controller as described in claim 1, characterized in that: The outer ring of each roller (204) is fitted with a protective ring, and the protective ring is made of an impact-resistant reinforced material.

4. The speed difference controller as described in claim 1, characterized in that: The rotating assembly (3) includes a rotating shaft (301) rotatably connected to the middle position of the inner cavity of the lower housing (1) via a bearing. A rotating disk (302) is fitted around the outer ring of the rotating shaft (301). A steel wire rope (303) is wound around the outer ring of the rotating disk (302). A buffer column (304) is fixedly connected to the bottom of the steel wire rope (303). A second hook (305) is fixedly connected to the bottom of the buffer column (304). Two ratchet wheels (306) are fitted around the outer ring of the rotating disk (302). A circular groove (307) is opened on the top of the rotating disk (302). A coil spring (308) is provided in the inner cavity of the circular groove (307). The two ends of the coil spring (308) are fixedly connected to the inner wall of the circular groove (307) and the outer wall of the rotating shaft (301), respectively.

5. The speed difference controller as described in claim 4, characterized in that: The outer surface of the coil spring (308) is coated with a tin-plated layer, and the locking assembly (4) is disposed in the inner cavity of the lower housing (1).

6. The speed difference controller as described in claim 5, characterized in that: The locking assembly (4) includes a vertical block fixedly connected to the inner cavity of the lower housing (1) and a cylindrical connecting rod (402) rotatably connected by a bearing. The cylindrical connecting rod (402) is provided with two pawls (401). The outer ring of the cylindrical connecting rod (402) is fitted onto the connecting tube (403) connecting the two pawls (401). A tension spring (404) is fixedly connected between the pawls (401) and the vertical block.

7. The speed difference controller as described in claim 6, characterized in that: Both of the pawls (401) are V-shaped, and the outer surface of the tension spring (404) is coated with a tin plating layer.

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