Steel wire rope anti-abrasion rope guide for electric hoist
By setting a clamping unit and a limiting rod on the rope guide, the problems of wear and uneven arrangement of the wire rope during oblique pulling are solved, and the neat winding of the wire rope on the drum and the stable operation of the equipment are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-06
AI Technical Summary
When the wire rope is subjected to oblique tension, the wear between it and the pressure plate sidewall of the rope guide increases, resulting in uneven alignment and even rope skipping, which affects the normal operation of the equipment and the service life of the wire rope.
A clamping unit is installed on the rope guide, including a guide rod, a spring, and a clamping rod. The clamping rod slides up and down along the guide rod by the action of the spring to eliminate the oblique tension of the wire rope. Limiting rods are set on both sides of the rope guide groove to limit the movement range of the wire rope and prevent excessive tilt angle and wear.
This reduces wear between the wire rope and the side wall of the guide plate, ensures the wire rope is neatly arranged on the drum, avoids rope skipping, and improves the operational stability of the equipment and the service life of the wire rope.
Smart Images
Figure CN223973768U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane technology, specifically to a wire rope anti-wear guide for electric hoists. Background Technology
[0002] The main function of the rope guide used in the lifting field is to ensure that the wire rope is neatly and tightly wound on the drum. It is usually composed of a rope guide nut, a pressure plate or a guiding device. Its working principle is that the rotation of the drum drives the rope guide to move axially. During this process, the side wall of the pressure plate is in direct contact with the wire rope. The side walls on both sides of the pressure plate restrict the movement path of the wire rope, so that the wire rope is arranged according to the spiral groove on the drum. The side wall at the top of the pressure plate presses the wire rope, so that the wire rope is tightly wound on the drum, thus achieving neat winding of the wire rope on the drum. When the pressure plate moves to the limit position of the stroke, it triggers the limit switch to realize stroke control.
[0003] However, in practical applications, wire ropes are often subjected to oblique tension. When wire ropes are subjected to oblique tension, a certain angle is formed between the wire rope and the pressure plate side wall of the rope guide. The existence of the angle will not only aggravate the wear between the wire rope and the pressure plate side wall of the rope guide, but may also cause the wire rope to be misaligned on the drum, or even cause rope skipping, thereby affecting the normal operation of the equipment and the service life of the wire rope. Summary of the Invention
[0004] This invention addresses the problem in existing technology where increased wear between the wire rope and the rope guide occurs when the wire rope is subjected to oblique tension. It provides a wear-resistant rope guide for electric hoists. This rope guide reduces the angle between the wire rope and the pressure plate sidewall of the rope guide when subjected to oblique tension, thereby reducing wear, ensuring neat alignment of the wire rope on the drum, and preventing rope skipping.
[0005] To solve the above problems, the technical solution of this utility model is:
[0006] A wear-resistant wire rope guide for an electric hoist includes a rope guide body with a rope guide groove. The rope guide body also has a clamping unit, which includes a guide rod, a spring, a sleeve, and a clamping rod. The guide rod is fixedly mounted on the left and right sides of the rope guide groove. The spring and sleeve are both sleeved on the guide rod. One end of the spring is connected to the upper end of the guide rod, and the other end of the spring is connected to the upper end of the sleeve. Both ends of the clamping rod are fixedly connected to the sleeve.
[0007] By adopting the above scheme, the guide rod of the clamping unit is set on the left and right sides of the rope guide groove, and a spring and a sleeve are set on the guide rod, and a clamping rod is connected between the sleeves. When the wire rope is subjected to oblique tension in the front and rear directions, the clamping rod can slide up and down along the guide rod under the action of the spring, thereby eliminating part of the oblique tension force on the wire rope, thereby reducing the inclination angle between the wire rope and the side wall of the top of the pressure plate of the rope guide body, thus reducing the additional wear between the side wall of the top of the pressure plate of the rope guide body and the wire rope when the wire rope is subjected to oblique tension in the front and rear directions.
[0008] Furthermore, since the clamping rod slides up and down along the guide rod under the action of the spring, it can dynamically clamp the wire rope. This ensures that even when the wire rope sways due to oblique tension, the clamping rod can continuously clamp the wire rope, preventing it from jumping or loosening when it is wound onto the drum.
[0009] Based on the above solution, the present invention can be further improved as follows:
[0010] Furthermore, the axis of the clamping rod is aligned with the width direction of the rope guide body, thereby ensuring that the clamping force of the clamping rod on the wire rope is evenly distributed on the wire rope, thus ensuring the uniformity of clamping and reducing uneven wear between the wire rope and the rope guide body.
[0011] Furthermore, the clamping rod is located in the middle of the guide rope groove.
[0012] Furthermore, limiting rods are provided on the left and right sides of the rope guide groove. The limiting rods are located on the lower side of the pressing unit, and rollers are rotatably mounted on the limiting rods, thereby limiting the range of movement of the wire rope along the width direction of the rope guide body. This not only prevents the wire rope from having an excessive angle with the side walls of the pressure plate of the rope guide body, thus reducing additional wear between the wire rope and the side walls of the pressure plate of the rope guide body, but also prevents the wire rope from jumping or loosening when wound onto the drum due to oblique pulling along the width direction of the rope guide body.
[0013] Furthermore, a roller is rotatably provided on the clamping rod, so that there is rolling friction between the clamping rod and the wire rope, thereby reducing the friction between the clamping rod and the wire rope.
[0014] Furthermore, the axis of the limiting rod coincides with the normal at the connection between the limiting rod and the rope guide body, and the axis of the guide rod coincides with the normal at the connection between the guide rod and the rope guide body.
[0015] Furthermore, the rope guide body and the guide rod, as well as the rope guide body and the limiting rod, are all connected by connecting blocks. The limiting rod and the connecting block, and the guide rod and the connecting block, are detachable connections, facilitating the replacement of the guide rod and the limiting rod.
[0016] Furthermore, the upper end of the sleeve is provided with a groove, and the spring extends into the groove and is connected to the sleeve at the bottom of the groove. The groove can prevent the spring from being over-compressed.
[0017] The beneficial effects of this utility model through the above technical solution are as follows:
[0018] 1. In this utility model, by setting a clamping unit on the rope guide, and the guide rod of the clamping unit is set on the left and right sides of the rope guide groove, and a spring and a sleeve are set on the guide rod, and a clamping rod is connected between the sleeves, so that when the wire rope is subjected to oblique tension in the front and rear directions, the clamping rod can slide up and down along the guide rod under the action of the spring, thereby eliminating part of the oblique tension force on the wire rope, thereby reducing the inclination angle between the wire rope and the side wall of the top of the rope guide pressure plate, thereby reducing the additional wear between the side wall of the top of the rope guide pressure plate and the wire rope when the wire rope is subjected to oblique tension in the front and rear directions; and, since the clamping rod slides up and down along the guide rod under the action of the spring, the clamping rod can dynamically clamp the wire rope, so that when the wire rope shakes due to oblique tension, the clamping rod can continuously clamp the wire rope, which can prevent the wire rope from jumping or loosening when it is wound onto the drum.
[0019] 2. In a further technical solution of this utility model, by setting a limiting rod on each of the rope guides on the left and right sides of the rope guide groove, the movement range of the wire rope can be limited when the wire rope is subjected to oblique tension along the width direction of the rope guide body. This not only prevents the wire rope from having an excessive angle between itself and the side walls of the rope guide pressure plate, thereby reducing additional wear between the wire rope and the side walls of the rope guide pressure plate, but also prevents the wire rope from jumping or loosening when wound onto the drum due to oblique tension along the width direction of the rope guide body. Attached Figure Description
[0020] Figure 1 This is one of the structural schematic diagrams of this utility model;
[0021] Figure 2 This is the second structural schematic diagram of this utility model;
[0022] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;
[0023] Figure 4 This is a cross-sectional view of the present invention;
[0024] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;
[0025] Figure 6 yes Figure 5 A magnified view of a section at point C.
[0026] The attached diagram is labeled as follows: 1. Rope guide body; 2. Rope guide groove.
[0027] 3. Clamping unit, 301. Guide rod, 302. Spring, 303. Sleeve, 304. Clamping rod, 305. Countersink;
[0028] 4. Limiting rod, 5. Roller, 6. Connecting block. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0030] like Figures 1-3 As shown, an anti-wear rope guide for wire rope of an electric hoist includes a rope guide body 1, a rope guide groove 2 formed along the circumferential direction on the rope guide body 1, and a clamping unit 3 on the rope guide body 1. The clamping unit 3 includes two guide rods 301, a spring 302, a sleeve 303, and a clamping rod 304. The two guide rods 301 are parallel to each other and are respectively fixed on the rope guide body 1 on the left and right sides of the rope guide groove 2. The axis of the guide rod 301 coincides with the normal line at the connection between the guide rod 301 and the rope guide body 1 (the normal line at the connection between the guide rod 301 and the rope guide body 1 is the perpendicular line to the tangent line at the connection between the guide rod 301 and the rope guide body 1).
[0031] like Figures 4-6 As shown, the spring 302 and the sleeve 303 are both sleeved on the guide rod 301. The spring 302 is a compression spring and is located between the top of the sleeve 303 and the guide rod 301. The upper end of the sleeve 303 is provided with a groove 305. The groove 305 is connected to the interior of the sleeve 303. The outer diameter of the groove 305 is larger than the outer diameter of the spring 302. One end of the spring 302 is connected to the upper end of the guide rod 301. The other end of the spring 302 extends into the groove 305 and is connected to the sleeve 303 at the bottom end of the groove 305. The left and right ends of the clamping rod 304 are fixedly connected to the sleeve 303. The clamping rod 304 is rotatably provided with a roller 5 and is located in the middle of the guide rope groove 2.
[0032] Specifically, the rotation of the roller 5 relative to the clamping rod 304 can be achieved by setting bearings at both ends of the roller 5, and a seal can be set to ensure the life of the bearing; or the rotation of the roller 5 relative to the clamping rod 304 can be achieved simply by sleeved the roller 5 on the clamping rod 304, and a limit ring can be set on the clamping rod 304 to restrict the movement of the roller 5 along the axial direction of the clamping rod 304. In this embodiment, the rotation of the roller 5 relative to the clamping rod 304 is achieved by setting bearings.
[0033] In this embodiment, by setting the guide rod 301 of the clamping unit 3 on the rope guide body 1 on the left and right sides of the rope guide groove 2, and setting the spring 302 and sleeve 303 on the guide rod 301, and connecting the sleeve with a clamping rod 304, when the wire rope is subjected to oblique tension in the front and rear direction, the clamping rod 304 can slide up and down along the guide rod 301 under the action of the spring 302, thereby eliminating part of the oblique tension force on the wire rope, thereby reducing the inclination angle between the wire rope and the side wall of the top of the pressure plate of the rope guide body 1, thereby reducing the additional wear between the side wall of the top of the pressure plate of the rope guide body 1 and the wire rope when the wire rope is subjected to oblique tension in the front and rear direction.
[0034] Furthermore, since the clamping rod 304 slides up and down along the guide rod 301 under the action of the spring 302, it can achieve dynamic clamping of the wire rope by the clamping rod 304. Thus, even when the wire rope sways due to oblique tension, the clamping rod 304 can continuously clamp the wire rope, which can prevent the wire rope from jumping or loosening when it is wound onto the drum.
[0035] Furthermore, by rotating the roller 5 on the clamping rod 304, the clamping rod 304 and the wire rope can be subjected to rolling friction, thereby improving the service life of the clamping rod 304; by using the groove 305 at the upper end of the sleeve 303, and with the spring 302 extending into the groove 305, the spring 302 can be prevented from being over-compressed and thus losing its deformation ability.
[0036] As one possible implementation method, such as Figures 1-3 As shown, the axis of the clamping rod 304 is aligned with the width direction of the rope guide body 1, which ensures that the clamping force of the clamping rod 304 on the wire rope is evenly distributed on the wire rope, thereby ensuring the uniformity of clamping and reducing uneven wear between the wire rope and the rope guide body 1.
[0037] As one possible implementation method, such as Figures 3-5 As shown, each of the rope guide bodies 1 on the left and right sides of the rope guide groove 2 is provided with a limiting rod 4. The two limiting rods 4 are parallel to each other, and the axis of the limiting rod 4 coincides with the normal line at the connection between the limiting rod 4 and the rope guide body 1 (the normal line at the connection between the limiting rod 4 and the rope guide body 1 is the perpendicular line to the tangent line at the connection between the limiting rod 4 and the rope guide body 1). The limiting rod 4 is located on the lower side of the pressing unit 3. The lower side of the pressing unit 3 is the side of the pressing unit 3 away from the electric hoist. A roller 5 is rotatably provided on the limiting rod 4.
[0038] By setting a limiting rod 4 on each of the rope guide body 1 on the left and right sides of the rope guide groove 2, the movement range of the wire rope can be limited when the wire rope is subjected to oblique tension along the width direction of the rope guide body 1. This not only prevents the wire rope from having an excessive angle between itself and the side walls of the pressure plate on both sides of the rope guide body 1, thereby reducing additional wear between the wire rope and the side walls of the pressure plate on both sides of the rope guide body 1, but also prevents the wire rope from jumping or loosening when it is wound onto the drum due to oblique tension along the width direction of the rope guide body 1.
[0039] As one possible implementation method, such as Figures 3-5 As shown, the rope guide body 1 and the guide rod 301 and the rope guide body 1 and the limiting rod 4 are both connected by the connecting block 6. The connection between the limiting rod 4 and the connecting block 6 and the connection between the guide rod 301 and the connecting block 6 are detachable. The connection between the rope guide body 1 and the connecting block 6 is fixed, such as by welding or by fixing with nuts.
[0040] Specifically, in this embodiment, the connecting block 6 is square, and a through hole is provided in the middle of the connecting block 6 for the guide rod 301 and the limiting rod 4 to pass through. Threaded holes are provided on the side of the connecting block 6, the bottom of the guide rod 301, and the bottom of the limiting rod 4. After the guide rod 301 and the limiting rod 4 extend into the middle of the connecting block 6, the threaded holes at the bottom of the guide rod 301 and the bottom of the limiting rod 4 correspond to the threaded holes on the side of the connecting block 6. Thus, the guide rod 301 and the connecting block 6 and the limiting rod 4 are detachably connected by bolts and nuts, which facilitates the replacement of the guide rod 301 and the limiting rod 4.
[0041] Furthermore, the top of the guide rod 301 and the top of the limiting rod 4 can be fixedly connected by a connector, or the guide rod 301 and the limiting rod 4 can be independent of each other. In this embodiment, the top of the guide rod 301 and the top of the limiting rod 4 are fixedly connected by a connecting rod.
[0042] In this utility model, when in use:
[0043] First, install the rope guide body 1 on the drum, and make the limit rod 4 located on the side of the clamping unit 3 away from the electric hoist, with the wire rope located between the limit rods 4 and below the clamping rod 304.
[0044] When the wire rope is subjected to oblique tension in the front-to-back direction, increasing the angle between the wire rope take-up side and the end of the guide groove 2, the clamping rod 304 slides upward along the guide rod 301 under the action of the wire rope, thereby compressing the spring 302 until the clamping rod 304 stops sliding upward. The force of the spring 302 on the clamping rod 304 is balanced with the force of the wire rope on the clamping rod 304. Thus, under the action of the clamping rod 304, the inclination between the wire rope take-up side and the end of the guide groove 2 can be reduced, thereby reducing the additional wear on the wire rope at the end of the guide groove 2.
[0045] When the wire rope is subjected to oblique tension in the front and rear directions, causing the inclination angle between the wire rope take-up side and the end of the guide groove 2 to decrease, under the action of the spring 302, the clamping rod 304 slides down along the guide rod 301 until the force of the spring 302 on the clamping rod 304 and the force of the wire rope on the clamping rod 304 are balanced. The clamping rod 304 stops sliding down, thereby achieving continuous clamping of the wire rope by the clamping rod 304, which can prevent the wire rope from jumping or loosening when it is wound onto the drum.
[0046] Furthermore, under the action of the limiting rod 4, when the wire rope is subjected to oblique tension along the width direction of the guide rope body 1, the movement range of the wire rope can be limited, thereby avoiding excessive inclination between the side walls on both sides of the pressure plate of the guide rope body 1. This not only reduces the additional wear between the wire rope and the side walls on both sides of the pressure plate of the guide rope body 1, but also prevents the wire rope from jumping or loosening when wound onto the drum due to oblique tension along the width direction of the guide rope body 1.
[0047] Therefore, the rope guide in this invention can reduce the angle between the wire rope and the pressure plate sidewall of the rope guide when the wire rope is subjected to oblique tension, thereby reducing wear, ensuring the neat arrangement of the wire rope on the drum, and preventing rope skipping.
[0048] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0049] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present invention without departing from the spirit of the present invention or the scope of disclosure shall fall within the protection scope of the present invention.
Claims
1. A steel wire rope anti-abrasion guide for an electric hoist, comprising a guide body (1), a guide groove (2) being formed on the guide body (1), characterized in that, The guide rope device body (1) is provided with a pressing unit (3), the pressing unit (3) comprises a guide rod (301), a spring (302), a sleeve (303) and a pressing rod (304), the guide rod (301) is fixedly arranged on the left and right sides of the guide rope groove (2), the spring (302) and the sleeve (303) are both sleeved on the guide rod (301), one end of the spring (302) is connected with the upper end of the guide rod (301), the other end of the spring (302) is connected with the upper end of the sleeve (303), and the left and right ends of the pressing rod (304) are fixedly connected with the sleeve (303).
2. The steel rope wear protector for an electric hoist according to claim 1, characterized in that, The axis of the pressing rod (304) is consistent with the width direction of the guide rope device body (1).
3. The steel rope wear protector for an electric hoist according to claim 2, characterized in that, The pressing rod (304) is located in the middle of the guide rope groove (2).
4. The abrasion-resistant wire rope guide for an electric hoist according to claim 1, characterized by The left and right sides of the guide rope groove (2) are further provided with a limiting rod (4), the limiting rod (4) is located below the pressing unit (3), and the limiting rod (4) is rotatably provided with a roller (5).
5. The abrasion protection guide for a steel wire rope of an electric hoist according to any one of claims 1 to 4, characterized in that, The pressing rod (304) is rotatably provided with a roller (5).
6. The steel rope wear protector for an electric hoist according to claim 4, characterized in that, The axis of the limiting rod (4) coincides with the normal line of the connecting position of the limiting rod (4) and the guide rope device body (1), and the axis of the guide rod (301) coincides with the normal line of the connecting position of the guide rod (301) and the guide rope device body (1).
7. The steel rope wear protector for an electric hoist according to claim 4, characterized in that, The guide rope device body (1) and the guide rod (301) and the guide rope device body (1) and the limiting rod (4) are connected through a connecting block (6), and the limiting rod (4) and the connecting block (6) and the guide rod (301) and the connecting block (6) are detachably connected.
8. The steel rope wear protector for an electric hoist according to claim 5, characterized in that, The upper end of the sleeve (303) is provided with a sink (305), the spring (302) extends into the sink (305) and is connected with the sleeve (303) at the bottom end of the sink (305).