A friction hoist tail rope rotation protection device to prevent tail rope kinking and tangling.

Abstract

This utility model discloses a tail rope rotation protection device for friction hoists to prevent tail rope kinking and entanglement, relating to the technical field of multi-rope friction hoists. It includes a base, on the upper surface of which a drive motor is mounted. A coupling is provided at the output end of the drive motor, and a reducer is provided at the end of the coupling. A friction wheel is rotatably mounted at the output end of the reducer. Compared with existing ordinary tail rope protection devices for multi-rope friction hoists, the device, through the setting of a bidirectional threaded sleeve, can control the contact between the limiting plate with the friction roller and the steel rope via a helical transmission method according to the diameter of the steel rope, thus preventing the steel rope from shifting during movement and causing the tail rope to kink and entangle, thereby improving the stability of the steel rope. Furthermore, through the setting of a sliding locking sleeve, the rotating rod can be locked and fixed through a friction connection, preventing the rotating rod from rotating during friction.

Description

Technical Field

[0001] This utility model relates to the technical field of multi-rope friction hoists, specifically to a tail rope rotation protection device for friction hoists that prevents the tail rope from twisting and tangling. Background Technology

[0002] Multi-rope friction hoist is a type of mining machinery used for lifting minerals, personnel, and materials. It employs the flexible body friction transmission principle, with steel wire ropes resting on friction wheels. The friction between the steel wire ropes and the pads is used to lift or lower heavy objects and personnel.

[0003] Existing multi-rope friction hoists are used to lift or lower heavy objects and personnel. Due to the uneven distribution of heavy objects and personnel, the tension on each rope is different. As the usage time increases, the rope tension will gradually become unbalanced, causing the tail rope to swing and become entangled, which affects the use of the multi-rope friction hoist.

[0004] For example, patent application number 202421080146.7 discloses a tail rope protection device for a multi-rope friction hoist. This utility model belongs to the field of multi-rope friction hoists, specifically a tail rope protection device for a multi-rope friction hoist. It includes a support platform with a mounting groove, a connecting rod mounted in the mounting groove, and a movable block mounted on the connecting rod. This tail rope protection device for a multi-rope friction hoist solves the problem of protecting heavy objects and personnel during lifting or lowering in existing multi-rope friction hoists through the cooperation of a separating rod and a limiting rod. Due to the uneven distribution of heavy objects and personnel, the tension on each rope is different, and the rope tension gradually becomes unbalanced. This causes the tail rope to swing and become entangled, affecting the use of the multi-rope friction hoist. However, when the tail rope protection device of this multi-rope friction hoist is used to stretch steel ropes of different diameters, the steel rope may shift due to swaying or other reasons because the groove between the steel rope and the friction wheel is not properly matched. If this is not limited, the tail rope may also twist during use, affecting normal lifting.

[0005] Therefore, in view of this, we have studied and improved the existing structure to prevent the tail rope from twisting and tangling, and proposed a friction hoist tail rope rotation protection device. Utility Model Content

[0006] The purpose of this invention is to provide a friction hoist tail rope rotation protection device to prevent tail rope kinking and entanglement, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a friction hoist tail rope rotation protection device to prevent tail rope kinking and entanglement, comprising a base, a drive motor mounted on the upper surface of the base, a coupling provided at the output end of the drive motor, a reducer provided at the end of the coupling, a friction wheel rotatably mounted at the output end of the reducer, placement plates provided on both sides of the friction wheel, a connecting plate provided on the rear surface of the placement plate, a guide groove provided on the rear surface of the connecting plate, a slot provided on one end surface of the connecting plate, a rotating rod rotatably mounted on the inner surface of the guide groove, and multiple bidirectional threaded sleeves provided on the outer surface of the rotating rod.

[0008] Preferably, a limiting plate is spirally mounted on the outer surface of the bidirectional threaded sleeve, and a friction roller is rotatably mounted on the surface of the limiting plate.

[0009] Preferably, a sliding lock sleeve is slidably installed on the outer surface of the end of the rotating rod, and the sliding lock sleeve and the slot are configured to slide together, and a rotating handle is provided on the end surface of the rotating rod.

[0010] Preferably, a support frame is provided in front of the placement plate, and a flywheel is rotatably mounted on the upper inner surface of the support frame.

[0011] Preferably, the support frame has limiting grooves on both sides, and a limiting slide plate is slidably installed on the inner surface of the limiting groove, and a flywheel is provided on the inner surface of the limiting slide plate.

[0012] Preferably, a limiting slide rod is slidably installed through the surface of the limiting slide plate, and a connecting block is provided on the lower surface of the limiting slide rod, and the connecting block is fixedly connected to the outer surface of the support frame.

[0013] Preferably, the upper outer surface of the limiting slide bar is provided with a threaded groove, and a pressure sleeve is spirally installed on the outer surface of the threaded groove, and a pressure relief spring is provided on the lower surface of the pressure sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the arrangement of a base, drive motor, coupling, reducer, placement plate, friction wheel, connecting plate, guide groove, slot, rotating rod, sliding lock sleeve, rotating handle, bidirectional threaded sleeve, limiting plate, and friction roller, achieves the following: The bidirectional threaded sleeve allows for control of the contact between the limiting plate with the friction roller and the steel rope via a helical transmission, based on the diameter of the steel rope. This prevents the steel rope from shifting during movement, thus avoiding rope end tangling and improving the stability of the steel rope. The sliding lock sleeve, through friction connection, locks and fixes the rotating rod, preventing rotation of the rotating rod during friction with the friction roller.

[0016] 2. This utility model, through the arrangement of a support frame, flywheel one, limiting slide groove, limiting slide plate, flywheel two, connecting block, limiting slide rod, threaded groove, pressure sleeve, and pressure relief spring, allows the flywheel one to slide along the limiting slide groove and pull down the pressure relief spring to elastically relieve pressure when the flywheel one drives the steel rope to move by friction. This reduces the tension on the steel rope and prevents the steel rope from being damaged due to excessive tension. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the placement plate of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the sliding lock sleeve of this utility model;

[0020] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Placement base; 101. Drive motor; 102. Coupling; 103. Reducer; 2. Placement plate; 201. Friction wheel; 202. Connecting plate; 203. Guide groove; 204. Slot; 205. Rotating rod; 206. Sliding lock sleeve; 207. Rotating handle; 208. Bidirectional threaded sleeve; 209. Limiting plate; 210. Friction roller; 3. Support frame; 301. Flywheel one; 302. Limiting groove; 303. Limiting slide plate; 304. Flywheel two; 305. Connecting block; 306. Limiting slide rod; 307. Threaded groove; 308. Pressure sleeve; 309. Pressure relief spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-3As shown, a friction hoist tail rope rotation protection device for preventing tail rope kinking and entanglement includes a base 1. A drive motor 101 is mounted on the upper surface of the base 1, and a coupling 102 is provided at the output end of the drive motor 101. A reducer 103 is provided at the end of the coupling 102, and a friction wheel 201 is rotatably mounted at the output end of the reducer 103. Placement plates 2 are provided on both sides of the friction wheel 201. The advantage of this arrangement is that, through the setting of the friction wheel 201, the steel rope can be driven to move by friction with the steel rope to lift the item.

[0024] Furthermore, a connecting plate 202 is provided on the rear surface of the placement plate 2, and a guide groove 203 is provided on the rear surface of the connecting plate 202. A slot 204 is provided on one end surface of the connecting plate 202. The advantage of this arrangement is that the sliding direction of the limiting plate 209 can be limited by the guide groove 203.

[0025] Furthermore, a rotating rod 205 is rotatably mounted on the inner surface of the guide groove 203, and multiple bidirectional threaded sleeves 208 are provided on the outer surface of the rotating rod 205. The advantage of this arrangement is that, by setting the bidirectional threaded sleeves 208, the contact between the limiting plate 209 with friction roller 210 and the steel rope can be controlled by the screw drive according to the diameter of the steel rope, so as to avoid the steel rope from deviating when moving, causing the rope tail to twist and entangle, thereby improving the stability of the steel rope in use.

[0026] Furthermore, a limiting plate 209 is spirally installed on the outer surface of the bidirectional threaded sleeve 208, and a friction roller 210 is rotatably installed on the surface of the limiting plate 209. The advantage of this setting is that, by setting the friction roller 210, the steel rope can be limited while the friction between the roller and the steel rope can be reduced through rolling friction, thereby improving the service life of the steel rope.

[0027] Furthermore, a sliding locking sleeve 206 is slidably installed on the outer surface of the end of the rotating rod 205, and the sliding locking sleeve 206 and the slot 204 are configured to slide together. A rotating handle 207 is provided on the end surface of the rotating rod 205. The advantage of this configuration is that the rotating rod 205 can be locked and fixed by friction connection through the sliding locking sleeve 206, so as to prevent the rotating rod 205 from rotating when the friction roller 210 is rubbing.

[0028] Figure 4 As shown, a support frame 3 is provided in front of the placement plate 2, and a flywheel 301 is rotatably mounted on the upper inner surface of the support frame 3. The advantage of this arrangement is that the steel rope can be supported and tightened by the flywheel 301.

[0029] Furthermore, limiting grooves 302 are provided on both sides of the support frame 3, and limiting slide plates 303 are slidably installed on the inner surface of the limiting grooves 302. A flywheel 304 is provided on the inner surface of the limiting slide plates 303, and a limiting slide rod 306 is slidably installed through the surface of the limiting slide plates 303. A connecting block 305 is provided on the lower surface of the limiting slide rod 306, and the connecting block 305 is fixedly connected to the outer surface of the support frame 3. The advantage of this setting is that the sliding direction of the limiting slide plates 303 can be restricted by the setting of the limiting grooves 302, so as to prevent them from deviating during sliding.

[0030] Furthermore, the upper outer surface of the limiting slide bar 306 is provided with a threaded groove 307, and a pressure sleeve 308 is spirally installed on the outer surface of the threaded groove 307. A pressure relief spring 309 is provided on the lower surface of the pressure sleeve 308. The advantage of this arrangement is that, with the pressure relief spring 309, when the flywheel 301 drives the steel rope to move by friction, if the downward pressure on the steel rope is too large and exceeds the pressure relief threshold of the flywheel 301, the flywheel 301 slides along the limiting slide groove 302 to pull down the pressure relief spring 309 for elastic pressure relief, thereby reducing the tension on the steel rope and preventing the steel rope from being damaged due to excessive tension. With the pressure sleeve 308, the pressure relief spring 309 can be compressed by moving downward along the threaded groove 307, thus adjusting the pressure relief threshold of the pressure relief spring 309.

[0031] Working Principle: When using this friction-type hoist tail rope rotation protection device to prevent tail rope tangling, firstly, before the steel rope lifting operation, the operator can rotate the handle 207 to drive the rotating rod 205 to rotate synchronously. The bidirectional threaded sleeve 208 on the outer surface of the rotating rod 205 rotates accordingly. Through the screw transmission principle, the limiting plate 209 drives the friction roller 210 to move towards each other until the outer surface of the friction roller 210 is in close contact with the steel rope, achieving precise limiting of the steel rope. After limiting, the sliding locking sleeve 206 is pushed into the placement plate 2 along the slot 204. The friction between the sliding locking sleeve 206 and the slot 204 is used to firmly lock the rotating rod 205, preventing it from loosening in subsequent operations.

[0032] When the steel rope enters the working state, the drive motor 101 transmits power to the reducer 103 through the coupling 102. After reduction and torque amplification, the reducer drives the friction wheel 201 to rotate stably. The friction wheel 201, through the friction between itself and the steel rope, drives the steel rope to move smoothly, achieving the lifting operation. During this process, the friction roller 210 maintains rolling contact with the steel rope, effectively reducing frictional wear on the steel rope surface and extending its service life.

[0033] It is worth mentioning that when the steel cable is lifting an item, if the tension exceeds the preset threshold, i.e., exceeds the protection value of flywheel 2 304, flywheel 2 304 will drive the limiting slide plate 303 to slide along the limiting slide groove 302, thereby stretching the pressure relief spring 309. At this time, the pressure relief spring 309 absorbs and releases the overload energy of the steel cable by its own elastic deformation, playing a pressure relief protection role and preventing the steel cable from being damaged due to excessive tension, thus providing reliable safety for the entire lifting operation. This is the working principle of the friction hoist tail rope rotation protection device that prevents the tail rope from twisting and tangling.

Claims

1. A friction-type hoist tail rope rotation protection device to prevent tail rope kinking and entanglement, comprising a base (1), characterized in that, A drive motor (101) is mounted on the upper surface of the placement base (1), and a coupling (102) is provided at the output end of the drive motor (101), and a reducer (103) is provided at the end of the coupling (102). A friction wheel (201) is rotatably mounted at the output end of the reducer (103), and a placement plate (2) is provided on both sides of the friction wheel (201). A connecting plate (202) is provided on the rear surface of the placement plate (2), and a guide groove (203) is provided on the rear surface of the connecting plate (202). A slot (204) is provided on one end surface of the connecting plate (202). A rotating rod (205) is rotatably mounted on the inner surface of the guide groove (203), and a plurality of bidirectional threaded sleeves (208) are provided on the outer surface of the rotating rod (205).

2. The friction hoist tail rope rotation protection device for preventing tail rope kinking and entanglement according to claim 1, characterized in that, The outer surface of the bidirectional threaded sleeve (208) is spirally fitted with a limiting plate (209), and a friction roller (210) is rotatably mounted on the surface of the limiting plate (209).

3. The friction hoist tail rope rotation protection device for preventing tail rope kinking and entanglement according to claim 1, characterized in that, A sliding lock sleeve (206) is slidably installed on the outer surface of the end of the rotating rod (205), and the sliding lock sleeve (206) and the slot (204) are slidably connected, and a rotating handle (207) is provided on the end surface of the rotating rod (205).

4. The friction hoist tail rope rotation protection device for preventing tail rope kinking and entanglement according to claim 1, characterized in that, A support frame (3) is provided in front of the placement plate (2), and a flywheel (301) is rotatably installed on the upper inner surface of the support frame (3).

5. A friction-type hoist tail rope rotation protection device for preventing tail rope kinking and entanglement according to claim 4, characterized in that, The support frame (3) has a limiting groove (302) on both sides, and a limiting slide plate (303) is slidably installed on the inner surface of the limiting groove (302), and a flywheel (304) is provided on the inner surface of the limiting slide plate (303).

6. A friction-type hoist tail rope rotation protection device for preventing tail rope kinking and entanglement according to claim 5, characterized in that, The limiting slide plate (303) is slidably installed with a limiting slide rod (306) through the surface, and a connecting block (305) is provided on the lower surface of the limiting slide rod (306), and the connecting block (305) is fixedly connected to the outer surface of the support frame (3).

7. A friction-type hoist tail rope rotation protection device for preventing tail rope kinking and entanglement according to claim 6, characterized in that, The upper outer surface of the limiting slide bar (306) is provided with a threaded groove (307), and a pressure sleeve (308) is spirally installed on the outer surface of the threaded groove (307), and a pressure relief spring (309) is provided on the lower surface of the pressure sleeve (308).

Images