Crane roller reverse winding device

Abstract

The utility model relates to the field of crane drums, and discloses a crane drum reverse winding device which comprises a mounting plate, connecting plates are fixedly mounted on the front side and the rear side of the top of the mounting plate, a winding roller is arranged on the top of the mounting plate, a steel wire rope is wound on the surface of the winding roller, and a reverse rotation preventing assembly is arranged on one side of each connecting plate. And rotating rods are fixedly mounted on the front side and the rear side of the winding roller. The round sleeve, the limiting groove and the limiting block are matched with one another, the rotating sleeve can be rotated to drive the rotating plate to rotate, the rotating plate rotates to drive the rotating rod to rotate, and the clockwise rotating surfaces of the limiting block and the limiting groove are arc-shaped, so that the rotating rod can drive the winding roller to rotate at the moment; at the moment, the contact face of the limiting block and the limiting groove is a plane, the limiting block can be inserted into the limiting groove, and therefore reverse rotation of the winding roller and the rotating rod can be prevented.

Description

Technical Field

[0001] The utility model relates to the field of crane drums, in particular to a crane drum rewinding device. Background Art

[0002] The crane drum is an important part of the crane. It is usually a cylindrical component used to wind and release the lifting wire rope. The main function of the drum is to retract and release the wire rope through rotation, so as to lift and lower the weight. The drum is generally made of high-strength metal materials to withstand huge tension and frequent use. Its surface is usually specially treated to increase the friction between the wire rope and prevent slipping. The design and manufacture of the drum need to consider many factors, such as the crane's lifting capacity, working level, wire rope diameter and length, etc. In some large cranes, the drum may be equipped with special braking devices and drive devices to accurately control the rotation speed and stop position of the drum.

[0003] The existing publication number is CN220078398U, which discloses a crane drum rewinding device, including a drum and a trolley frame, the drum is mounted on the trolley frame, a beam-type photoelectric switch corresponding to the drum safety ring is mounted on the trolley frame, the light wire rope of the beam-type photoelectric switch corresponds to the lowest end of the rope groove where the safety ring is located, and the beam-type photoelectric switch is interlocked with the lifting mechanism; the upper part of the trolley frame is close to the beam-type photoelectric switch and is provided with a locking assembly for locking the drum, the locking assembly includes a frame and an electric rod, the electric rod is mounted on the trolley frame, and the telescopic end of the electric rod is connected to a plug rod. The utility model has a simple structure and low cost, and controls the lifting mechanism to stop descending through the beam-type photoelectric switch, so as to prevent the drum from rewinding when the drum is lowering the wire rope and causing damage to the equipment and personnel; in addition, the drum can be locked to prevent the drum from rewinding when the lifting mechanism fails unexpectedly, which further increases safety.

[0004] During the operation of the crane, the normal operation of the drum to reel in and out the wire rope is crucial to the safety and efficiency of the lifting work. The traditional crane drum design often focuses on the forward reeling and releasing of the wire rope, but in actual applications, there will be some situations where the drum needs to be rewound. In some complex lifting operation scenarios, it may be necessary to fine-tune the position of the lifted heavy objects or change the lifting direction, or when the crane fails or an emergency occurs, such as failure of the braking system, accidental jamming of the heavy objects, etc., emergency processing is required by rewinding the drum to avoid more serious accidents. Although the above problem can prevent the reel from reversing, when the load is too heavy, the limit piece for limiting the reel may break, so that the reel cannot be limited, resulting in poor limiting effect of the reel. For this reason, a crane drum rewinding device is proposed to solve the above problem. Utility Model Content

[0005] In order to remedy the above deficiencies, the utility model provides a crane drum rewinding device, which aims to improve the above-mentioned problems in the prior art. Although the reel can be prevented from reversing, when the load is too heavy, the limiting member for limiting the position of the reel may break, and the reel cannot be limited, resulting in a poor limiting effect of the reel.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] It comprises a mounting plate, the front side and the rear side of the top of the mounting plate are fixedly mounted with a connecting plate, the top of the mounting plate is provided with a winding roller, the surface of the winding roller is wound with a wire rope, an anti-reversal component is provided on one side of the connecting plate, the front side and the rear side of the winding roller are fixedly mounted with a rotating rod, the outer end of the rotating rod penetrates the outer side of the connecting plate and is rotatably mounted with the connecting plate;

[0008] The anti-reversal component is used to prevent the winding roller from reversing during operation, and can also limit the reversed winding roller;

[0009] As a further description of the above technical solution:

[0010] The anti-reversal assembly comprises a rotating sleeve, a rotating plate is fixedly mounted on the front side of the rotating sleeve, and the rotating sleeve is fixedly mounted on the surface of one group of rotating rods;

[0011] As a further description of the above technical solution:

[0012] A round sleeve is movably mounted on the surface of one group of the rotating rods, a limiting groove is provided on the front side of the round sleeve, and a limiting block is fixedly mounted on the back side of the rotating sleeve, the number of the limiting blocks and the limiting grooves are both six, and the limiting blocks and the limiting grooves are plugged in;

[0013] As a further description of the above technical solution:

[0014] A first spring is sleeved on the surface of one group of the rotating rods, the front end of the first spring is fixedly mounted on the back of the round sleeve, and the back of the first spring is fixedly mounted on the front side of one group of the connecting plates;

[0015] As a further description of the above technical solution:

[0016] A limiting rod is fixedly installed on the front side of one group of the connecting plates, the front end of the limiting rod penetrates the front side of the round sleeve and is slidably installed with the round sleeve, and a round block is fixedly installed on the front end of the limiting rod, and the back side of the round block contacts the front side of the round sleeve;

[0017] As a further description of the above technical solution:

[0018] The anti-reversal assembly further comprises a ratchet, the ratchet and the surface of another set of rotating rods are fixedly mounted, and a pawl is rotatably mounted on the back of another set of connecting plates, and the ratchet and the pawl are meshed;

[0019] As a further description of the above technical solution:

[0020] A baffle is fixedly mounted on the back of another group of connecting plates, a second spring is fixedly mounted on one side of the baffle, and the bottom of the second spring and the top of the pawl are fixedly mounted.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the circular sleeve, the limit groove and the limit block cooperate with each other, so that when the rotating sleeve is rotated, the rotating plate is driven to rotate, and the rotating plate drives the rotating rod to rotate. Since the clockwise rotating surfaces of the limit block and the limit groove are arc-shaped, the rotating rod will drive the winding roller to rotate. When the winding roller and the rotating rod are reversed, the contact surface of the limit block and the limit groove is a plane. At this time, the limit block will be inserted into the limit groove, thereby preventing the winding roller and the rotating rod from reversing.

[0023] 2. In the utility model, through the cooperation between the ratchet and the pawl, when the winding roller and the rotating rod rotate clockwise, the rotation of the rotating rod will drive the ratchet to rotate, and the rotation of the ratchet will push the pawl to disengage from it. Finally, when the winding roller and the rotating rod reverse, the pawl will always be engaged with the ratchet, thereby preventing the winding roller and the rotating rod from reversing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional schematic diagram of a mounting plate proposed for the utility model;

[0025] Figure 2 This is a right side view of the mounting plate provided by the utility model;

[0026] Figure 3 The utility model provides an exploded view of a rotating sleeve and a rotating rod;

[0027] Figure 4 For this utility model Figure 2 The structure diagram at A is enlarged;

[0028] Figure 5 For this utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0029] Legend:

[0030] 1. Mounting plate; 2. Connecting plate; 3. Winding roller; 4. Wire rope; 5. Anti-reversal assembly; 51. Rotating sleeve; 52. Rotating plate; 53. Round sleeve; 54. Limiting groove; 55. Limiting block; 56. First spring; 57. Limiting rod; 58. Round block; 59. Ratchet; 510. Ratchet pawl; 511. Baffle; 512. Second spring; 6. Rotating rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-5 The utility model provides an embodiment: comprising a mounting plate 1, a connecting plate 2 is fixedly mounted on the front and rear sides of the top of the mounting plate 1, a winding roller 3 is arranged on the top of the mounting plate 1, a steel wire rope 4 is wound around the surface of the winding roller 3, an anti-reversal component 5 is arranged on one side of the connecting plate 2, a rotating rod 6 is fixedly mounted on the front and rear sides of the winding roller 3, and the outer end of the rotating rod 6 penetrates the outer side of the connecting plate 2 and is rotatably mounted with the connecting plate 2;

[0033] The anti-reversal component 5 is used to prevent the winding roller 3 from reversing during operation, and can also limit the reversed winding roller 3. First, the mounting plate 1 is fixed to the crane by bolts, and then the wire rope 4 can be pulled, or the winding roller 3 can be rotated by a motor. When the winding roller 3 reverses, the anti-reversal component 5 can prevent the winding roller 3 from reversing and causing unnecessary damage.

[0034] Reference Figure 1-5The anti-reversal component 5 includes a rotating sleeve 51, a rotating plate 52 is fixedly installed on the front side of the rotating sleeve 51, and the rotating sleeve 51 and the surface of one group of rotating rods 6 are fixedly installed. Through the cooperation between the rotating sleeve 51 and the rotating plate 52, one side of the wire rope 4 can be fixed to the load-bearing object, and then the rotating sleeve 51 can be rotated at this time, and the rotating sleeve 51 rotates to drive the rotating plate 52 to rotate, and the rotating rod 6 rotates to drive the rotating rod 6 and the winding roller 3 to rotate, so that the wire rope 4 on the winding roller 3 can be retracted and released. A round sleeve 53 is movably installed on the surface of one group of rotating rods 6, and a limited position is provided on the front side of the round sleeve 53 The limit block 55 is fixedly installed on the back of the rotating sleeve 51. The number of the limit block 55 and the limit slot 54 are both six. The limit block 55 and the limit slot 54 are plugged together. The circular sleeve 53, the limit slot 54 and the limit block 55 cooperate with each other. When the rotating sleeve 51 is rotated, the rotating plate 52 is driven to rotate. The rotation of the rotating plate 52 drives the rotating rod 6 to rotate. Since the clockwise rotating surface of the limit block 55 and the limit slot 54 is an arc, the rotating rod 6 will drive the winding roller 3 to rotate. When the winding roller 3 and the rotating rod 6 are reversed, the contact surface of the limit block 55 and the limit slot 54 is a plane. At this time, the limit block 55 will be inserted into the limit groove 54, so as to prevent the winding roller 3 and the rotating rod 6 from reversing. A first spring 56 is sleeved on the surface of one group of rotating rods 6. The front end of the first spring 56 is fixedly installed to the back of the round sleeve 53, and the back of the first spring 56 is fixedly installed to the front side of one group of connecting plates 2. Through the setting of the first spring 56, the round sleeve 53 can always bear the elastic force of the first spring 56, so that when the winding roller 3 and the rotating rod 6 are reversed, the limit block 55 will completely enter the limit groove 54, so that when the winding roller 3 and the rotating rod 6 are reversed, The limit block 55 is more stable when limited by the limit block 55. A limit rod 57 is fixedly installed on the front side of one group of connecting plates 2. The front end of the limit rod 57 penetrates to the front side of the circular sleeve 53 and is slidably installed with the circular sleeve 53. A round block 58 is fixedly installed on the front end of the limit rod 57. The back of the round block 58 contacts the front side of the circular sleeve 53. Through the mutual cooperation of the limit rod 57 and the round block 58, the circular sleeve 53 can be limited, so that the circular sleeve 53 can only move forward and backward, preventing the circular sleeve 53 from rotating under the action of the rotating sleeve 51 and the limit block 55, thereby resulting in a poor limiting effect on the winding roller 3.

[0035] Reference Figure 1-5The anti-reversal component 5 also includes a ratchet 59, which is fixedly installed on the surface of the ratchet 59 and another set of rotating rods 6, and a pawl 510 is rotatably installed on the back of another set of connecting plates 2. The ratchet 59 and the pawl 510 are meshed. Through the cooperation between the ratchet 59 and the pawl 510, when the winding roller 3 and the rotating rod 6 rotate clockwise, the rotation of the rotating rod 6 will drive the ratchet 59 to rotate, and the rotation of the ratchet 59 will push the pawl 510 to disengage from it. Finally, when the winding roller 3 and the rotating rod 6 reverse, the pawl 510 will always be meshed with the ratchet 59, thereby preventing the winding roller 3 and the rotating rod 6 from reversing. A baffle plate 511 is fixedly installed on the back side of the connecting plate 2, and a second spring 512 is fixedly installed on one side of the baffle plate 511. The bottom of the second spring 512 and the top of the pawl 510 are fixedly installed. Through the mutual cooperation of the baffle plate 511 and the second spring 512, the pawl 510 can always bear the elastic force of the second spring 512, so that when the winding roller 3 and the rotating rod 6 are reversed, the pawl 510 will quickly engage with the ratchet 59. Moreover, under the action of the second spring 512, the pawl 510 will always engage with the ratchet 59, thereby improving the stability of the limiting winding roller 3 and the rotating rod 6.

[0036] Working principle: First, fix the mounting plate 1 to the crane by bolts, then fix the load on one side of the wire rope 4, and then rotate the rotating sleeve 51 clockwise, the rotating sleeve 51 drives the rotating plate 52 to rotate, the rotating rod 6 drives the rotating rod 6 and the winding roller 3 to rotate, and since the clockwise rotating surfaces of the limit block 55 and the limit groove 54 are arc-shaped, the rotating rod 6 drives the winding roller 3 to rotate, the rotating rod 6 drives the ratchet 59 to rotate, and the ratchet 59 drives the ratchet 59 to rotate. 10 is disengaged from it, so that the wire rope 4 on the winding roller 3 can be retracted and released. When the winding roller 3 reverses, the winding roller 3 will drive the rotating rod 6 to rotate. At this time, the pawl 510 will immediately engage with the ratchet 59 under the action of the second spring 512, and the contact surface of the limit block 55 and the limit groove 54 is a plane. At this time, the limit block 55 will be inserted into the limit groove 54, thereby preventing the winding roller 3 and the rotating rod 6 from reversing, thereby preventing the winding roller 3 and the rotating rod 6 from reversing.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crane drum rewinding device, comprising a mounting plate (1), characterized in that: A connecting plate (2) is fixedly mounted on the front and rear sides of the top of the mounting plate (1); a winding roller (3) is arranged on the top of the mounting plate (1); a steel wire rope (4) is wound around the surface of the winding roller (3); an anti-reversal component (5) is arranged on one side of the connecting plate (2); a rotating rod (6) is fixedly mounted on the front and rear sides of the winding roller (3); the outer end of the rotating rod (6) penetrates the outer side of the connecting plate (2) and is rotatably mounted with the connecting plate (2); The anti-reversal component (5) is used to prevent the reeling roller (3) from reversing during operation, and can also limit the reversing reeling roller (3).

2. A crane drum rewinding device according to claim 1, characterized in that: The anti-reversal assembly (5) comprises a rotating sleeve (51), a rotating plate (52) is fixedly mounted on the front side of the rotating sleeve (51), and the rotating sleeve (51) is fixedly mounted on the surface of one group of rotating rods (6).

3. A crane drum rewinding device according to claim 2, characterized in that: A circular sleeve (53) is movably mounted on the surface of one group of the rotating rods (6), a limiting groove (54) is provided on the front side of the circular sleeve (53), and a limiting block (55) is fixedly mounted on the back side of the rotating sleeve (51), the number of the limiting blocks (55) and the number of the limiting grooves (54) are both six, and the limiting blocks (55) and the limiting grooves (54) are plugged into each other.

4. A crane drum rewinding device according to claim 3, characterized in that: A first spring (56) is sleeved on the surface of one group of the rotating rods (6), the front end of the first spring (56) is fixedly mounted on the back side of the circular sleeve (53), and the back side of the first spring (56) is fixedly mounted on the front side of one group of the connecting plates (2).

5. A crane drum rewinding device according to claim 3, characterized in that: A limiting rod (57) is fixedly installed on the front side of one group of the connecting plates (2), the front end of the limiting rod (57) penetrates the front side of the circular sleeve (53) and is slidably installed with the circular sleeve (53), and a round block (58) is fixedly installed on the front end of the limiting rod (57), and the back side of the round block (58) contacts the front side of the circular sleeve (53).

6. A crane drum rewinding device according to claim 1, characterized in that: The anti-reversal assembly (5) further comprises a ratchet (59), wherein the ratchet (59) and the surface of another set of rotating rods (6) are fixedly mounted, and a ratchet pawl (510) is rotatably mounted on the back of another set of connecting plates (2), and the ratchet (59) and the ratchet pawl (510) are meshed.

7. A crane drum rewinding device according to claim 6, characterized in that: A baffle (511) is fixedly mounted on the back of another group of connecting plates (2), a second spring (512) is fixedly mounted on one side of the baffle (511), and the bottom of the second spring (512) and the top of the pawl (510) are fixedly mounted.

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