Spring balancer with protection function

Abstract

The utility model discloses a spring balancer with a protection function, which comprises a body and a steel wire rope, the body is provided with a support for the steel wire rope to penetrate through, the support is provided with a protection device capable of moving horizontally, the protection device comprises a first sleeve and a second sleeve, and the first sleeve is provided with a first through hole and a second through hole. The first sleeve and the second sleeve are provided with through holes allowing the steel wire rope to penetrate through, a plurality of clamping blocks are evenly distributed on the first sleeve with the through holes as the axis, and each clamping block is provided with a plurality of anti-skid blocks from top to bottom. The clamping block tightly abuts against the steel wire rope through the spring, the friction force between the clamping block and the steel wire rope is increased, the friction force between the steel wire rope and the clamping block is further increased through the anti-sliding block, the speed of rapidly pulling back the steel wire rope is reduced, and the safety of a user is guaranteed; and the lifting ring is prevented from impacting nearby equipment, objects and people, so that the product has the advantages of protecting and guiding functions.

Description

Technical Field

[0001] The utility model relates to the technical field of balancers, in particular to a spring balancer with a protective function. Background Art

[0002] The spring balancer is an auxiliary tool used in conjunction with an operating tool. It uses the energy stored in the coil spring to keep the suspended operating tool in a weightless state. Since it greatly reduces the labor intensity of the operator and improves labor productivity, it is widely used in various production fields.

[0003] The main components of a spring balancer are a cover, a coil spring, a pulley and a wire rope. Its power mainly comes from the contraction force of the spring. The spring balancer will have a strong contraction potential energy under high load, and when this contraction force reaches the weight of the heavy object, it can pull it up.

[0004] When the load of the spring balancer is instantly cleared, the wire rope will be quickly pulled back into the housing under the force of the contraction of the coil spring. During this process, if the user is not careful, the quickly locked wire rope will injure the fingers. Therefore, the applicant has made a useful design and found a solution to the above problem. The technical solution to be introduced below was produced in this context. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional spring balancer design and provide a product with protection function and guidance function.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions.

[0007] A spring balancer with a protective function comprises a body and a steel wire rope. The body is provided with a bracket for the steel wire rope to pass through, the bracket is provided with a horizontally movable protective device, the protective device comprises a first sleeve and a second sleeve, the first sleeve and the second sleeve are provided with a through hole for the steel wire rope to pass through, the first sleeve is provided with a plurality of clamping blocks evenly distributed around the through hole as the axis, the clamping blocks are provided with a plurality of anti-sliding blocks from top to bottom, a spring is provided on the back of the clamping block, and abuts the first sleeve so that the anti-sliding block abuts the outer wall of the steel wire rope, the second sleeve is threadedly connected to the first sleeve, and an inclined guide portion is provided at the entrance of the through hole of the second sleeve.

[0008] Preferably, the first sleeve is provided with a cavity for accommodating the clamping block, and limiting grooves are provided on both sides of the cavity.

[0009] Preferably, limiting blocks are provided on both sides of the clamping block and are slidably arranged in the limiting grooves.

[0010] Preferably, the back side of the clamping block is provided with a plurality of blind holes for accommodating springs, the clamping block is provided with an arc-shaped contact surface, and the anti-sliding block is arranged on the contact surface.

[0011] Preferably, a lifting ring is provided at the end of the steel wire rope, and a buffer block is provided between the lifting ring and the second sleeve.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) The utility model releases elastic force to the clamping block through the spring, so that the clamping block is tightly against the wire rope, increasing the friction between the clamping block and the wire rope, and further increasing the friction between the wire rope and the clamping block through the anti-sliding block, thereby preventing the speed at which the wire rope is quickly pulled back under the force of the winding spring when the load of the spring balancer is instantly reset to zero, thereby ensuring the safety of the user and giving the product the advantage of a protective function.

[0015] (2) The utility model guides the wire rope to reset in an orderly manner through the guide part, so that the wire rope swings within a limited range during the pulling back process, thereby preventing the lifting ring from hitting nearby equipment, objects and people due to the quickly pulled back wire rope, so that the product has the advantage of a guiding function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a partial cross-sectional structure of a spring balancer with a protective function according to the present invention;

[0017] Figure 2 For this utility model Figure 1 A partial enlarged view of a spring balancer with a protective function;

[0018] Figure 3 This is an exploded schematic diagram of a protective device for a spring balancer with a protective function according to the present invention;

[0019] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0020] Figure numerals: 1. Main body; 2. Steel wire rope; 3. Bracket; 4. Protective device; 5. Clamping block; 6. Spring; 7. Lifting ring; 8. Buffering pad; 41. First sleeve; 42. Second sleeve; 43. Through hole; 411. Concave cavity; 412. Limiting groove; 421. Guide part; 51. Anti-sliding block; 52. Limiting block; 53. Blind hole; 54. Contact surface. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0024] Reference example Figures 1 to 3 The spring balancer with a protective function includes a body 1 and a wire rope 2. The body 1 is provided with a bracket 3 for the wire rope 2 to pass through. The bracket 3 is provided with a horizontally movable protective device 4. The protective device 4 includes a first sleeve 41 and a second sleeve 42. The first sleeve 41 and the second sleeve 42 are provided with a through hole 43 for the wire rope 2 to pass through. The first sleeve 41 is evenly distributed with a plurality of clamping blocks 5 with the through hole 43 as the axis. The clamping block 5 is provided with a plurality of anti-sliding blocks 51 from top to bottom. A spring 6 is provided on the back of the clamping block 5 and abuts against the first sleeve 41 so that the anti-sliding block 51 abuts against the outer wall of the wire rope 2. The second sleeve 42 is threadedly connected to the first sleeve 41. An inclined guide part 421 is provided at the entrance of the through hole 43 of the second sleeve 42. The guide part 421 guides the wire rope 2 to reset in an orderly manner, so that the wire rope 2 shakes within a limited range during the pulling back process, thereby preventing the lifting ring 7 from hitting nearby equipment, objects and people due to the rapidly pulled back wire rope 2.

[0025] It is worth mentioning that the first sleeve 41 is provided with a cavity 411 for accommodating the clamping block 5. Limiting grooves 412 are provided on both sides of the cavity 411. The cavity 411 provides a guide for the clamping block 5, and the limiting grooves 412 limit the extension distance of the clamping block 5.

[0026] It is worth mentioning that the clamping block 5 is provided with a limit block 52 on both sides, and is slidably arranged in the limit groove 412. The limit block 52 is used in conjunction with the limit groove 412.

[0027] It is worth mentioning that the back of the clamping block 5 is provided with a plurality of blind holes 53 for accommodating the spring 6. The clamping block 5 is provided with an arc-shaped contact surface 54. The anti-sliding block 51 is arranged on the contact surface 54. The blind hole 53 provides a space for accommodating the spring 6 and prevents the spring 6 from being over-compressed. The contact surface 54 increases the contact area with the wire rope 2. The spring 6 releases elastic force to the clamping block 5, so that the clamping block 5 is closely in contact with the wire rope 2, increasing the friction between the clamping block 5 and the wire rope 2. The anti-sliding block 51 further increases the friction between the wire rope 2 and the clamping block 5, preventing the load of the spring 6 balancer from being instantly cleared to zero, thereby reducing the speed at which the wire rope 2 is quickly pulled back under the force of the winding spring contraction, thereby ensuring the safety of the user.

[0028] It is worth mentioning that a lifting ring 7 is provided at the end of the wire rope 2, and a buffer block 8 is provided between the lifting ring 7 and the second sleeve 42. The lifting ring 7 is connected to the suspended object, and the buffer block 8 reduces the impact force of the lifting ring 7 hitting the second sleeve 42.

[0029] The above design solution can enable the product to achieve the advantages of having protection function and guidance function.

[0030] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A spring balancer with a protective function, comprising a body (1) and a steel wire rope (2), wherein the body (1) is provided with a bracket (3) for the steel wire rope (2) to pass through, characterized in that: The bracket (3) is provided with a horizontally movable protective device (4), and the protective device (4) includes a first sleeve (41) and a second sleeve (42). The first sleeve (41) and the second sleeve (42) are provided with a through hole (43) for the wire rope (2) to pass through. The first sleeve (41) is provided with a plurality of clamping blocks (5) evenly distributed with the through hole (43) as the axis. The clamping block (5) is provided with a plurality of anti-sliding blocks (51) from top to bottom. The back of the clamping block (5) is provided with a spring (6) and abuts against the first sleeve (41) so that the anti-sliding block (51) abuts against the outer wall of the wire rope (2). The second sleeve (42) is threadedly connected to the first sleeve (41), and an inclined guide portion (421) is provided at the entrance of the through hole (43) of the second sleeve (42).

2. The spring balancer with a protective function according to claim 1, characterized in that: The first sleeve (41) is provided with a concave cavity (411) for accommodating the clamping block (5), and limiting grooves (412) are provided on both sides of the concave cavity (411).

3. The spring balancer with a protective function according to claim 2, characterized in that: Limiting blocks (52) are provided on both sides of the clamping block (5) and are slidably arranged in the limiting grooves (412).

4. The spring balancer with a protective function according to claim 3, characterized in that: The back of the clamping block (5) is provided with a plurality of blind holes (53) for accommodating springs (6); the clamping block (5) is provided with an arc-shaped contact surface (54); and the anti-sliding block (51) is arranged on the contact surface (54).

5. The spring balancer with a protective function according to claim 2, characterized in that: A lifting ring (7) is provided at the end of the steel wire rope (2), and a buffer block (8) is provided between the lifting ring (7) and the second sleeve (42).

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