Speed difference automatic controller with guide sleeve

Abstract

The utility model discloses a speed difference automatic controller with a guide sleeve, which comprises a shell, a central shaft is arranged at the center in the shell, a drum wheel is sleeved on the central shaft, a rope is wound on the drum wheel, a locking assembly is arranged in the shell, a wire outlet is arranged at the lower end of the shell, the guide sleeve is fixedly arranged on the wire outlet, and the guide sleeve is fixedly arranged on the guide sleeve. A clamping ring is fixedly arranged at the upper end of the wire outlet of the shell, an inner groove is formed in the position, corresponding to the clamping ring, of the upper end of the guide sleeve in a surrounding mode, the inner side of the clamping ring is clamped in the corresponding inner groove, the guide sleeve is provided with a protruding ring, and the portion, located between the protruding ring and the lower end of the shell, of the guide sleeve is sleeved with a buffer spring. A wire hole is formed in the center of the guide sleeve, the end, away from the drum wheel, of the rope penetrates through the wire hole of the guide sleeve to be fixedly connected with a lock catch, and the lower end of the rope is fixedly sleeved with falling protection equipment. The rope is not easy to abrade, the shell and the lock catch are not easy to damage, and the service life of the rope lock is effectively prolonged.

Description

Technical Field

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

[0002] In many fields requiring high-altitude operations, workers need to be attached to ropes controlled by a differential lock to prevent falls. Typical differential locks utilize a combination of a retractable pawl and a ratchet. When the rope is pulled down rapidly, the pawl is struck at high speed by the ratchet, engaging the ratchet teeth to secure it and prevent further falls. However, existing differential locks lack anti-static features. If used near areas with high electrical current, static electricity can be released into the worker, causing injury.

[0003] The existing technology, disclosed in CN216319593U, discloses an anti-static induction speed-difference automatic controller. This controller uses insulating material wrapped around the steel wire rope to prevent static electricity from being released onto the human body when in contact with the rope, thus protecting workers from electrostatic damage during electrical work. However, this invention has the following problems: after prolonged use, repeated pulling and retraction of the steel wire rope causes wear on the insulating material on the wire rope due to the edge of the casing, potentially damaging both the casing and the wire rope. Furthermore, when the rope retracts, the lower locking buckle can easily impact the casing, causing damage to both and reducing the lifespan of the speed-difference automatic controller. Therefore, this invention proposes a speed-difference automatic controller with a guide sleeve. Utility Model Content

[0004] The purpose of this invention is to provide a speed differential controller with a guide sleeve, which makes the rope less prone to wear and the shell and buckle less prone to damage, thus effectively improving the service life of this invention.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A speed differential controller with a guide sleeve includes a housing. A central shaft is located at the center of the housing, and a drum is sleeved on the central shaft. A rope is wound around the drum. A locking assembly is located inside the housing. A cable outlet is located at the lower end of the housing, and a guide sleeve is fixedly mounted on the cable outlet. A retaining ring is fixedly mounted on the upper end of the cable outlet. An inner groove is formed around the upper end of the guide sleeve corresponding to the retaining ring. The inner side of the retaining ring is engaged within the corresponding inner groove. The guide sleeve has a protruding ring. A buffer spring is sleeved between the protruding ring and the lower end of the housing. A cable hole is located at the center of the guide sleeve. The end of the rope away from the drum passes through the cable hole of the guide sleeve and is fixedly connected to a lock. A fall protection device is fixedly mounted on the lower end of the rope.

[0007] By adopting the above technical solution, this utility model has the following advantages:

[0008] The guide sleeve design of this invention ensures that the rope will not contact the housing during pull-out and retraction, reducing friction between the housing and the rope and thus protecting both the housing and the rope. The buffer spring effectively cushions the impact force generated when the rope retracts against the guide sleeve, further protecting the rope and the housing and significantly improving the service life of this invention. Furthermore, the fall protection device design effectively prevents the buckle from colliding with the housing during rope retraction, protecting both the housing and the buckle and further extending the service life of this invention.

[0009] Furthermore, a ratchet is fixedly connected to the drum wheel.

[0010] By adopting the above technical solution, this utility model has the following advantages:

[0011] The ratchet mechanism of this invention allows it to work in conjunction with a pawl to fix the rotation of the drum.

[0012] Furthermore, the locking assembly is located on one side of the drum wheel. The locking assembly includes a pawl, which is rotatably connected to the housing. A spring is provided between the end of the pawl at the rotation point and the housing. The side of the pawl near the spring is slidably connected to the ratchet teeth of the ratchet wheel. The end of the pawl away from the spring is provided with a protruding end, which meshes with the ratchet teeth of the ratchet wheel.

[0013] By adopting the above technical solution, this utility model has the following advantages:

[0014] The pawl in this invention allows the pawl to engage with the ratchet teeth under the high-speed impact of the ratchet when the rope is pulled down rapidly. This fixes the ratchet, preventing the drum from rotating and the rope from being pulled out further, thus protecting the workers.

[0015] Furthermore, the guide sleeve has arc-shaped surfaces at both the upper and lower ends of the wire hole.

[0016] By adopting the above technical solution, this utility model has the following advantages:

[0017] The arc-shaped surface of this invention effectively reduces the friction between the guide sleeve and the rope, further protecting both the guide sleeve and the rope.

[0018] Furthermore, the rope is fitted with a fixing part on the upper end of the buckle, the fall protection device is round, the upper end of the fixing part is inserted into the lower end of the fall protection device and fixedly connected to the fall protection device, and the upper end of the fall protection device matches the lower end of the guide sleeve.

[0019] By adopting the above technical solution, this utility model has the following advantages:

[0020] This utility model of fall protection device is circular in shape. When it comes into contact with the guide sleeve, it can effectively buffer the force of the rope rising, and further protect the guide sleeve and the locking buckle.

[0021] Furthermore, the rope consists of an inner steel wire rope and an outer insulating material.

[0022] By adopting the above technical solution, this utility model has the following advantages:

[0023] The insulating material in this invention provides an anti-static function, thereby broadening its application range and effectively improving its practicality. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the guide sleeve structure of this utility model.

[0027] Reference numerals: 1. Housing; 101. Cable outlet; 2. Guide sleeve; 201. Inner groove; 202. Protruding ring; 203. Arc-shaped surface; 204. Cable hole; 3. Central shaft; 4. Pawl; 5. Spring component; 6. Drum wheel; 7. Rope; 8. Buffer spring; 9. Fall protection device; 10. Lock; 11. Snap ring; 12. Fixing part. Detailed Implementation

[0028] like Figures 1 to 2As shown in this specific embodiment, a speed differential controller with a guide sleeve includes a housing 1. A central shaft 3 is located at the center of the housing 1, and a drum 6 is sleeved on the central shaft 3. A rope 7 is wound around the drum 6. A locking assembly is located inside the housing 1. A cable outlet 101 is located at the lower end of the housing 1, and a guide sleeve 2 is fixedly mounted on the cable outlet 101. A retaining ring 11 is fixedly mounted on the upper end of the cable outlet 101 of the housing 1. An inner groove 201 is provided around the upper end of the guide sleeve 2 corresponding to the position of the retaining ring 11. The inner side of the retaining ring 11 is engaged within the corresponding inner groove 201. The guide sleeve 2 has a protruding ring 202. A buffer spring 8 is sleeved between the protruding ring 202 and the lower end of the housing 1. A wire hole 204 is located at the center of the guide sleeve 2. The end of the rope 7 away from the drum 6 passes through the wire hole 204 of the guide sleeve 2 and is fixedly connected to the lock 10. A locking assembly is fixedly mounted on the lower end of the rope 7. A fall protection device 9; a ratchet is fixedly connected to the drum 6; a locking assembly is located on one side of the drum 6, and the locking assembly includes a pawl 4, which is rotatably connected to the housing 1. A spring 5 is provided between the end of the pawl 4 at the rotation point and the housing 1. The side of the pawl 4 near the spring 5 is slidably connected to the ratchet teeth of the ratchet. The end of the pawl 4 away from the spring 5 is provided with a protruding end, which meshes with the ratchet teeth of the ratchet; the guide sleeve 2 is provided with arc-shaped surfaces 203 at both the upper and lower ends of the wire hole 204; a fixing part 12 is fixedly fitted on the upper end of the lock 10. The fall protection device 9 is circular in shape. The upper end of the fixing part 12 is inserted into the lower end of the fall protection device 9 and fixedly connected to the fall protection device 9. The upper end of the fall protection device 9 matches the lower end of the guide sleeve 2; the rope 7 is composed of an inner steel wire rope and an outer insulating material.

[0029] Through the above-mentioned design, the guide sleeve 2 of this utility model ensures that the rope 7 will not contact the housing 1 when pulled out and retracted, reducing the friction between the housing 1 and the rope 7, thereby protecting the housing 1 and the rope 7. The buffer spring 8 effectively buffers the impact force generated by the rope 7 retracting and contacting the guide sleeve 2, further protecting the rope 7 and the housing 1, and effectively improving the service life of this utility model. The fall protection device 9 of this utility model effectively prevents the lock 10 from colliding with the housing 1 when the rope 7 retracts, thereby protecting the housing 1 and the lock 10, and further improving the service life of this utility model. The ratchet of this utility model allows it to cooperate with the pawl 4 to fix the rotation of the drum 6. The ratchet 4 of this utility model... The design of the pawl 4, when the rope 7 is pulled down rapidly, allows the protruding end of the pawl 4 to engage with the ratchet teeth under the high-speed impact of the ratchet, thus fixing the ratchet and preventing the drum 6 from rotating and the rope 7 from being pulled out further, thereby protecting the workers. The arc-shaped surface 203 of this invention effectively reduces the friction between the guide sleeve 2 and the rope 7, further protecting the guide sleeve 2 and the rope 7. The circular shape of the fall protection device 9 of this invention effectively buffers the upward force of the rope 7 when it comes into contact with the guide sleeve 2, further protecting the guide sleeve 2 and the locking buckle 10. The insulating material of this invention provides anti-static properties, thus broadening its application range and effectively improving its practicality.

[0030] Working Principle: When this utility model is in use, when the rope 7 is pulled down quickly, the guide sleeve 2 effectively prevents the rope 7 from directly rubbing against the housing 1, thus protecting the housing 1 and the rope 7. When the rope 7 is pulled down quickly, it will drive the drum 6 and the ratchet to rotate. The pawl 4 will be impacted by the ratchet, causing the protruding end of the pawl 4 to engage with the ratchet teeth of the ratchet, thus fixing the ratchet and fixing the drum 6, preventing the rope 7 from continuing to pull down, and protecting the workers. When the rope 7 is not in use and is retracted, the fall protection device 9 contacts the guide sleeve 2 first, and the buffer spring 8 plays a certain buffering role, which can effectively reduce the impact force of the rope 7 retraction, and effectively protect the housing 1, the rope 7 and the lock 10. The specific insulating materials, drum 6, pawl 4, ratchet installation methods and working principles of this utility model are all disclosed in the prior art, so this application will not elaborate further.

[0031] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A speed differential controller with a guide sleeve, comprising a housing (1), wherein a central shaft (3) is provided at the center of the housing (1), a drum (6) is sleeved on the central shaft (3), a rope (7) is wound on the drum (6), and a locking assembly is provided inside the housing (1), characterized in that, The lower end of the housing (1) is provided with a cable outlet (101), and a guide sleeve (2) is fixedly provided on the cable outlet (101). A retaining ring (11) is fixedly provided on the upper end of the cable outlet (101) of the housing (1). An inner groove (201) is provided around the upper end of the guide sleeve (2) corresponding to the position of the retaining ring (11). The inner side of the retaining ring (11) is locked in the corresponding inner groove (201). The guide sleeve (2) is provided with a protruding ring (202). A buffer spring (8) is sleeved between the protruding ring (202) and the lower end of the housing (1) of the guide sleeve (2). A wire hole (204) is provided in the center of the guide sleeve (2). The end of the rope (7) away from the drum (6) passes through the wire hole (204) of the guide sleeve (2) and is fixedly connected to the buckle (10). A fall protection device (9) is sleeved and fixed on the lower end of the rope (7).

2. The speed difference controller with guide sleeve (2) according to claim 1, characterized in that, A ratchet is fixedly connected to the drum wheel (6).

3. A speed difference controller with guide sleeve (2) according to claim 2, characterized in that, The locking assembly is located on one side of the drum (6). The locking assembly includes a pawl (4), which is rotatably connected to the housing (1). A spring (5) is provided between the end of the pawl (4) located at the rotation point and the housing (1). The side of the pawl (4) near the spring (5) is slidably connected to the ratchet teeth of the ratchet. The end of the pawl (4) away from the spring (5) is provided with a protruding end, which meshes with the ratchet teeth of the ratchet.

4. A speed differential controller with a guide sleeve (2) according to claim 1, characterized in that, The guide sleeve (2) is provided with arc-shaped surfaces (203) at both the upper and lower ends of the wire hole (204).

5. A speed differential controller with a guide sleeve (2) according to claim 4, characterized in that, The rope (7) is fitted with a fixing part (12) on the upper end of the buckle (10). The fall protection device (9) is round. The upper end of the fixing part (12) is inserted into the lower end of the fall protection device (9) and fixedly connected to the fall protection device (9). The upper end of the fall protection device (9) matches the lower end of the guide sleeve (2).

6. A speed differential controller with a guide sleeve (2) according to claim 1, characterized in that, The rope (7) consists of an inner steel wire rope and an outer insulating material.

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