A drum positioning device for crane

Abstract

The present invention relates to the technical field of drum positioning, and in particular to a drum positioning device for a crane, comprising a U-shaped base, a driving roller rotatably connected to the middle part of the base, a winding limit groove is arranged on the outer periphery of the driving roller, a bidirectional lead screw is rotatably connected to the lower part of the front side of the driving roller, one end of the bidirectional lead screw is connected to a guide motor, a guide rod is fixed to the base at the lower part of the bidirectional lead screw, a limit block is sleeved on the guide rod, a sliding sleeve is sleeved on the bidirectional lead screw, a guide block is arranged on the upper part of the sliding sleeve, the limit block, the sliding sleeve and the guide block are connected together in sequence, a limit mechanism is arranged on the guide block, and a positioning mechanism is arranged at both ends of the driving roller outside the base; the provided winding limit groove and the limit mechanism can guide the wire rope to achieve a close and neat arrangement thereof, and the positioning mechanism positions the wire rope after overcoming the inertia of the driving roller. In general, the present invention has the advantages of achieving wire rope winding limit, reducing the impact force of drum positioning and having a good use effect.

Description

Technical Field

[0001] The invention relates to the technical field of drum positioning, in particular to a drum positioning device for a crane. Background Art

[0002] Cranes are important equipment and machinery for freight handling in industries such as construction and road construction. Crane drums serve as lifting tools. They are vertically set drums that are rotated by human or mechanical power, and horizontally wind flexible components (wire ropes, chains, etc.) to complete traction operations. During the drum winding and traction process, the wire rope needs to be manually pulled and positioned so that it can be neatly wound on the drum. After the winding is completed, the drum needs to be positioned and fixed. Due to inertia, the drum still has a certain impact force after losing power, so the positioning structure may be damaged, affecting its service life and resulting in poor use effect. Therefore, how to overcome the above-mentioned technical problems and defects has become a key issue that needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects described in the background technology, so as to realize a crane drum positioning device which can achieve wire rope winding limit, reduce the impact force of drum positioning and have good use effect.

[0004] To achieve the above-mentioned invention object, the technical solution of the present invention is: a drum positioning device for a crane, comprising a U-shaped base, a transmission roller rotatably connected in the middle of the base, one end of the transmission roller is connected to a rotating motor, a winding limit groove is arranged on the outer periphery of the transmission roller, a bidirectional lead screw is rotatably connected to the lower part of the front side of the transmission roller, one end of the bidirectional lead screw is connected to a guide motor, a guide rod is fixed on the base at the lower part of the bidirectional lead screw, a limit block is sleeved on the guide rod, a sliding sleeve is sleeved on the bidirectional lead screw, a guide block is arranged on the upper part of the sliding sleeve, the limit block, the sliding sleeve and the guide block are connected together in sequence, and the up and down directions are in a straight line, a limit mechanism is arranged on the guide block, and a positioning mechanism is arranged at both ends of the transmission roller outside the base.

[0005] Furthermore, the winding limit grooves are evenly arranged on the driving roller with a certain inclination angle, and the steel wire ropes are arranged and wound along the winding limit grooves. After reaching the edge, they are reversely wound between the steel wire ropes, and are arranged tightly and neatly.

[0006] Furthermore, brake pads A are wound around the outer peripheries of the two ends of the driving roller, and limiting rings are arranged on the driving rollers on both sides of the brake pads A, and the brake pads A on one side are located on the inner side of the rotating motor.

[0007] Furthermore, the limiting mechanism includes a limiting hole opened on the guide block and parallel to the winding limiting groove, rotating grooves at both ends of the guide block outside the limiting hole, a rotating sleeve is arranged inside the rotating groove, a rotating ring is arranged inside the rotating groove, the rotating ring is connected to a connecting rod, the connecting rod passes through the rotating groove and is connected to the rotating ring, rolling balls are evenly distributed on the circumference of the gap between the rotating ring and the rotating groove wall, the wire rope passes through the rotating sleeve, and during the winding process of the wire rope, the rotating ring can rotate along the rotating groove, and the rolling balls lubricate the rotation of the rotating ring, so that the wire rope can rotate and recover when twisted, thereby reducing the degree of damage to the wire rope and increasing its service life.

[0008] Furthermore, the positioning mechanism includes an articulated shaft, which is installed on the base through a fixed seat, and two clamping rods are rotatably installed on the articulated shaft, and the inner side of the upper part of the clamping rod is connected through an electric telescopic rod, and the fixed end of the electric telescopic rod is detachably hinged on the clamping rod, and the free end of the electric telescopic rod is detachably hinged on the clamping rod, and a semicircular arc-shaped positioning ring is fixed to the lower end of the clamping rod, and a brake pad B is arranged on the inner side of the arc-shaped positioning ring. The set electric telescopic rod can also be set as a hydraulic telescopic rod. After the transmission roller stops rotating, the electric telescopic rod is started to stretch, and the two arc-shaped positioning rings clamp the brake pad A part of the transmission roller, thereby stopping the rotating transmission roller for convenient positioning.

[0009] Furthermore, the free end and the fixed end of the electric telescopic rod are both provided with a ring, and a mounting groove is provided on the clamping rod at the connection with the free end of the electric telescopic rod, and a screw is provided to pass through the clamping rod and the mounting groove, and the ring is sleeved on the rod-shaped part of the screw at the mounting groove. The rings at the free end and the fixed end of the electric telescopic rod are sleeved on the rod-shaped part of the screw, so that the electric telescopic rod can be disassembled and replaced, and the use effect is good.

[0010] The beneficial effects of the crane drum positioning device of the present invention are as follows:

[0011] 1. The drum positioning device for a crane of the present invention has winding limit grooves arranged on the driving roller, and the wire rope can be arranged and wound along the winding limit grooves. A bidirectional screw is also provided, and the limit block reciprocates along the bidirectional screw. The wire rope passes through a rotating sleeve on the limit block, and the wire rope reciprocates following the bidirectional screw. During the movement, under the drive of the rotating motor, the driving roller rotates to wind the moving wire rope along the winding limit groove. When winding to the second layer, the second layer of wire rope is wound between the two wire ropes of the first layer, so as to realize the winding limit of the wire rope.

[0012] 2. The crane drum positioning device of the present invention starts the electric telescopic rod to stretch after the driving roller stops rotating, and two arc-shaped positioning rings clamp the brake pad A part of the driving roller, thereby stopping the rotating driving roller for easy positioning. Brake pads B are arranged inside the arc-shaped positioning rings. The material of the brake pads B is composed of steel plates, adhesive insulation layers and friction blocks, thereby increasing the durability of brake pads A and brake pads B.

[0013] 3. In the crane drum positioning device of the present invention, during the winding process of the wire rope, a rotating ring is arranged to rotate along the rotating groove, and the rolling ball lubricates the rotation of the rotating ring, so that the wire rope can rotate and recover when twisted, thereby reducing the degree of damage to the wire rope and increasing its service life. The free end and the fixed end of the electric telescopic rod are provided with rings that are sleeved on the rod-shaped part of the screw, so that the electric telescopic rod can be disassembled and replaced, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the drum positioning device for a crane of the present invention;

[0015] Figure 2 yes Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0016] Figure 3 It is a right side structural schematic diagram of the invented crane drum positioning device;

[0017] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of B;

[0018] Figure 5 It is a schematic diagram of the top view of the structure of the drum positioning device for a crane of the present invention;

[0019] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of C in the figure.

[0020] In the figure: 1-base, 21-transmission roller, 22-winding limit groove, 23-rotating motor, 24-brake pad A, 25-limiting ring, 31-bidirectional screw, 32-guide block, 33-sliding sleeve, 34-limiting block, 35-guide rod, 36-guide motor, 37-limiting head;

[0021] Limiting mechanism: 41-rotating sleeve, 42-connecting rod, 43-rotating groove, 44-rotating ring, 45-rolling ball, 46-limiting hole;

[0022] Positioning mechanism: 51-fixed seat, 52-hinge shaft, 53-clamping rod, 54-arc-shaped positioning ring, 55-brake pad B, 56-electric telescopic rod;

[0023] 61-screw, 62-ring, 63-mounting slot. DETAILED DESCRIPTION

[0024] The crane drum positioning device of the present invention will be described in more detail below with reference to the accompanying drawings and through specific implementations.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] See also Figure 1-Figure 6 The crane drum positioning device of this embodiment achieves the technical effects of limiting the winding of the wire rope and reducing the impact force of the drum positioning on the basis of good use effect. The structure of this embodiment includes a U-shaped base 1, a transmission roller 21 is rotatably connected to the middle part of the base 1, one end of the transmission roller 21 is connected to a rotating motor 23, a winding limiting groove 22 is arranged on the outer periphery of the transmission roller 21, the winding limiting groove 22 is evenly arranged on the transmission roller 21, and has a certain inclination angle, brake pads A24 are wound around the two ends of the transmission roller 21, and limiting rings 25 are arranged on the transmission roller 21 on both sides of the brake pad A24, and the brake pad A24 on one side is located on the inner side of the rotating motor 23, and the wire rope is arranged and wound along the winding limiting groove 22. After reaching the edge, it is reversely wound between the two wire ropes, and the arrangement is tight and neat.

[0027] See 1- Figure 4In this embodiment, the lower part of the front side of the driving roller 21 is rotatably connected with a bidirectional screw 31, one end of the bidirectional screw 31 is connected to a guide motor 36, a guide rod 35 is fixed on the base 1 at the lower part of the bidirectional screw 31, a limit block 34 is sleeved on the guide rod 35, a sleeve 33 is sleeved on the bidirectional screw 31, a guide block 32 is arranged on the upper part of the sleeve 33, the limit block 34, the sleeve 33 and the guide block 32 are connected together in sequence, and the up and down directions are in a straight line, a limit head 37 is arranged on the bidirectional screw 31 on the right side of the sleeve 33, when the sleeve 33 contacts the limit head 37, it is at the end, corresponding to the winding limit groove 22 at this end, and a limit groove 37 is provided on the guide block 32 The limiting hole 46 is parallel to the positioning groove 22, and the rotating grooves 43 at both ends of the guide block 32 outside the limiting hole 46 are provided. The rotating groove 43 is provided with a rotating sleeve 41 inside the rotating groove 43, and a rotating ring 44 is provided inside the rotating groove 43. The rotating ring 44 is connected with a connecting rod 42, and the connecting rod 42 passes through the rotating groove 43 and is connected with the rotating ring 44. The gap between the rotating ring 44 and the wall of the rotating groove 43 is evenly distributed with rolling balls 45. The wire rope passes through the rotating sleeve 41. During the winding process of the wire rope, the rotating ring 44 can rotate along the rotating groove 43. The rolling balls 45 lubricate the rotation of the rotating ring 44, so that the wire rope can rotate and recover when twisted, thereby reducing the damage degree of the wire rope and increasing its service life.

[0028] See also Figure 1 , Figure 3 , Figure 5 and Figure 6 In this embodiment, the two ends of the transmission roller 21 on the outer side of the base 1 are provided with a positioning mechanism, which includes a hinge shaft 52, which is installed on the base 1 through a fixed seat 51, and two clamping rods 53 are rotatably installed on the hinge shaft 52, and the inner side of the upper part of the clamping rod 53 is connected through an electric telescopic rod 56, and the fixed end of the electric telescopic rod 56 is detachably hinged on the clamping rod 53, and the free end of the electric telescopic rod 56 is detachably hinged on the clamping rod 53, and a semicircular arc-shaped positioning ring 54 is fixed to the lower end of the clamping rod 53, and a brake pad B55 is arranged on the inner side of the arc-shaped positioning ring 54. The set electric telescopic rod 56 can also be set as a hydraulic telescopic rod. After the transmission roller 21 stops rotating, the electric telescopic rod 56 is started to stretch, and the two arc-shaped positioning rings 54 clamp the brake pad A24 part of the transmission roller 21, thereby stopping the rotating transmission roller 21, which is convenient for positioning.

[0029] In addition, the free end and the fixed end of the electric telescopic rod 56 are both provided with a ring 62, and a mounting groove 63 is provided on the clamping rod 53 at the connection with the free end of the electric telescopic rod 56, and a screw 61 is provided to pass through the clamping rod 53 and the mounting groove 63, and the ring 62 is sleeved on the rod-shaped part of the screw 61 at the mounting groove 63. The ring 62 at the free end of the electric telescopic rod 56 is sleeved on the rod-shaped part of the screw 61, so that the electric telescopic rod 56 can be disassembled and replaced, and the use effect is good.

[0030] The using principle and method of this embodiment are as follows: first, the wire rope is passed through the rotating sleeve 41, and then the end of the wire rope is fixed to the end of the transmission roller 21. At this time, the wire rope is in the winding limit groove 22 of one end transmission roller 21, and the limit block 34, the sliding sleeve 33 and the guide block 32 are on the same side as the fixed end of the wire rope. The inclined limit hole 46 and the winding limit groove 22 at the end are on the same straight line. During the process of retracting and releasing the wire rope, the limit block 34 moves smoothly so that the wire rope can be arranged and wound on the adjacent winding limit groove 22, and so on. After the transmission roller 21 stops rotating, the electric telescopic rod 56 is started to shorten, and the two arc-shaped positioning rings 54 clamp the brake pad A24 part of the transmission roller 21, thereby stopping the rotating transmission roller 21. After the stopping is completed, the two arc-shaped positioning rings 54 clamp the transmission roller 21 to form a positioning to prevent the rotation of the transmission roller 21 from causing the wire rope to loosen.

[0031] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by a person of ordinary skill in the field to which the invention belongs. The use of "one" or "an" and other similar words in the specification and claims of this application does not necessarily indicate a quantitative limitation. "Include" or "comprises" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0032] The exemplary implementation modes of the present invention are described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. A drum positioning device for a crane, comprising a U-shaped base, a driving roller rotatably connected to the middle of the base, one end of the driving roller being connected to a rotating motor, characterized in that: The outer periphery of the transmission roller is provided with a winding limit groove, the lower part of the front side of the transmission roller is rotatably connected with a bidirectional lead screw, one end of the bidirectional lead screw is connected with a guide motor, a guide rod is fixed on the base at the lower part of the bidirectional lead screw, a limit block is sleeved on the guide rod, a sliding sleeve is sleeved on the bidirectional lead screw, a guide block is arranged on the upper part of the sliding sleeve, the limit block, the sliding sleeve and the guide block are connected together in sequence, and the upper and lower directions are in a straight line, a limit mechanism is arranged on the guide block, and a positioning mechanism is arranged at both ends of the transmission roller outside the base; Brake pads A are wound around the two ends of the transmission roller, and limit rings are arranged on the transmission rollers on both sides of the brake pads A. The brake pads A on one side are located inside the rotating motor; The positioning mechanism includes an articulated shaft, which is installed on the base through a fixed seat. Two clamping rods are rotatably installed on the articulated shaft. The inner side of the upper part of the clamping rod is connected through an electric telescopic rod. The fixed end of the electric telescopic rod is detachably hinged to the clamping rod, and the free end of the electric telescopic rod is detachably hinged to the clamping rod. A semicircular arc-shaped positioning ring is fixed to the lower end of the clamping rod, and a brake pad B corresponding to the brake pad A is arranged on the inner side of the arc-shaped positioning ring.

2. The crane drum positioning device according to claim 1, characterized in that: The winding limit grooves are evenly arranged on the driving roller and have a certain inclination angle.

3. The crane drum positioning device according to claim 1 or 2, characterized in that: The limiting mechanism includes a limiting hole opened on the guide block and parallel to the winding limiting groove, and the two ends of the guide block outside the limiting hole are provided with a rotating groove, a rotating sleeve is arranged inside the rotating groove, a rotating ring is arranged inside the rotating groove, and the rotating ring is connected to a connecting rod, which passes through the rotating groove and is connected to the rotating ring, and rolling balls are evenly distributed on the circumference of the gap between the rotating ring and the rotating groove wall.

4. The crane drum positioning device according to claim 3, characterized in that: The free end and the fixed end of the electric telescopic rod are both provided with a collar, and a mounting groove is provided on the clamping rod connected to the free end of the electric telescopic rod, and a screw is provided to pass through the clamping rod and the mounting groove, and the collar is sleeved on the rod-shaped part of the screw at the mounting groove.

Images