Compression spring with adjustable elastic rigidity

Abstract

The utility model discloses a pressure spring with adjustable elastic rigidity, and relates to the technical field of pressure springs. According to the technical scheme, the pressure spring with the adjustable elastic rigidity comprises a connecting end, a fixing piece is installed at the connecting end, a shell is installed below the fixing piece, the connecting end is connected with the shell in a sliding mode, a pressure spring is installed below the connecting end, and an adjusting part is installed on the shell; the adjusting part comprises a connecting block, the connecting block is installed in the shell in a sliding mode, a transmission block is arranged above the connecting block, the connecting block is fixedly connected with the compression spring, a fixing rod is installed on the transmission block, a connecting platform is installed on the shell, and a transmission screw is installed on the connecting platform in a threaded mode. The utility model aims to provide the pressure spring with the adjustable elastic rigidity, so that the effect that the same pressure spring is applied to different mechanical equipment and processing and the elastic rigidity can be adjusted is achieved.

Description

TECHNICAL FIELD

[0001] The utility model discloses a compression spring of elastic rigidity adjustable relates to compression spring technical field. BACKGROUND

[0002] Compression spring (also called compression spring) is a type of spring, mainly used for bearing compression force, and restoring to original shape after being stressed. Compression spring is usually made of metal wire or metal band (usually steel, alloy steel or stainless steel), has certain elasticity, can compress when being stressed, and restores to original shape after external force is removed. Compression spring is widely used in many mechanical equipment, especially in occasions needing to absorb pressure and rebound, compression spring can quickly restore to original state after being stressed, therefore has higher elasticity and durability, compression spring can bear larger compression force, and can provide huge force in very small space through proper design, the manufacturing process of compression spring is relatively simple, and can be made into different shapes and sizes through winding metal wire, heat treatment and the like, compression spring can be circular, oval, rectangular and various cross-sectional shapes, and adapts to different application requirements.

[0003] Compression spring has larger elastic force, and can quickly restore to initial state, in actual application, when different types of workpieces are installed and used in different mechanical equipment, compression springs of different elastic rigidity need to be installed, and it is relatively cumbersome to disassemble and replace compression spring, a lot of time is consumed, and working efficiency is reduced, therefore, it is required to provide a compression spring of elastic rigidity adjustable to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a compression spring of elastic rigidity adjustable relates to compression spring technical field.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a compression spring of elastic rigidity adjustable, including connecting end, the fixed sheet is installed on connecting end, the shell is installed below fixed sheet, and connecting end and shell are connected in sliding mode, and the compression spring is installed below connecting end, and the adjusting part is installed on the shell, and the adjusting part includes connecting block, and connecting block is slidably installed in the shell, and the transmission block is arranged on the top of connecting block, and connecting block is fixedly connected with the compression spring, and the fixed rod is installed on the transmission block, and the connecting platform is installed on the shell, and the transmission screw is screw -threaded and installed on the connecting platform.

[0006] Preferably, the connecting end is provided with two groups, and the telescopic shaft is installed in the compression spring below the connecting end.

[0007] Preferably, the number of connecting block and transmission block is same with the number of compression spring.

[0008] Preferably, the bottom of transmission screw and the upper surface of transmission block abut.

[0009] Preferably, the compression spring is provided with threaded through holes, the threaded through holes are provided with several groups, the threaded through holes are provided with connecting blocks, and the threaded through holes are provided with connecting screws.

[0010] Preferably, the adjusting part is provided with a sliding channel, and the connecting block and the transmission block are slidingly installed on the sliding channel.

[0011] Compared with the prior art, the beneficial effects of the present application are as follows: by rotating the transmission screw by an operator, the lower end of the transmission screw is separated from the lower end surface of the connecting platform, the protruding part is driven to the uppermost surface of the transmission block, a downward pressure is applied to the transmission block, the transmission block moves downward, the connecting block moves downward, the compression spring is compressed by a distance, the number of turns of the connecting block and the transmission block is the same as that of the compression spring, a group of connecting blocks and transmission blocks are arranged on each group of spiral turns, the fixed rod is fixedly connected with each group of transmission blocks, when the first group of transmission blocks moves downward, all the transmission blocks below move downward at the same distance, and the elastic stiffness of the entire compression spring is controlled. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a whole schematic view of the compression spring with adjustable elastic stiffness.

[0013] Figure 2 It is a whole schematic view of the compression spring with adjustable elastic stiffness. Figure 1 It is a sectional view of the compression spring with adjustable elastic stiffness.

[0014] In the drawings, the reference signs are as follows:

[0015] 1, connecting end; 2, fixed sheet; 3, compression spring; 4, shell; 5, adjusting part; 51, connecting block; 511, connecting screw; 52, transmission block; 53, fixed rod; 54, transmission screw; 55, connecting platform; 56, sliding channel; 6, telescopic shaft. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0017] Specific implementation case:

[0018] For example, Figure 1As shown, a spring with adjustable stiffness, comprising a connecting end 1, a fixed sheet 2 is installed on the connecting end 1, an outer shell 4 is installed below the fixed sheet 2, the connecting end 1 is in sliding connection with the outer shell 4, a compression spring 3 is installed below the connecting end 1, an adjusting part 5 is installed on the outer shell 4;

[0019] The fixed sheet 2 is used to stabilize the connection strength of the connecting end 1 and the outer shell 4, the connecting end 1 can slide up and down on the fixed sheet 2 or in the outer shell 4, the compression spring 3 is connected with the connecting end 1 to control the movement of the connecting end 1, the adjusting part 5 is installed on the outer shell 4 and connected with the compression spring 3 to adjust the stiffness of the compression spring 3;

[0020] As shown, Figure 2 The connecting end 1 is provided with two groups, a telescopic shaft 6 is installed below the connecting end 1, and the telescopic shaft 6 is installed in the compression spring 3;

[0021] The telescopic shaft 6 is a prior art that can adaptively contract with the movement of the connecting end 1, and also serves as a connection between the two groups of connecting ends 1, its working principle is not described here, the movement of the connecting end 1 can make the telescopic shaft 6 extend and retract, and the compression spring 3 installed outside the telescopic shaft 6 can also adaptively contract and adjust;

[0022] In order to make the compression spring 3 have adjustable stiffness, an adjusting part 5 is installed on the outer shell 4;

[0023] The adjusting part 5 comprises a connecting block 51, the connecting block 51 is slidingly installed in the outer shell 4, a transmission block 52 is provided above the connecting block 51, the number of the connecting block 51 and the transmission block 52 is the same as the number of turns of the compression spring 3, the connecting block 51 is fixedly connected with the compression spring 3, a fixed rod 53 is installed on the transmission block 52, a connecting platform 55 is installed on the outer shell 4, a transmission screw 54 is threadedly installed on the connecting platform 55, and the bottom of the transmission screw 54 is in contact with the upper surface of the transmission block 52;

[0024] The adjusting part 5 adjusts the elastic stiffness of the compression spring 3 by adjusting the depth of the threaded screw 54 screwed into the connecting platform 55 by the operator. The threaded screw 54 is screwed so that the lower end of the threaded screw 54 is away from the lower end surface of the connecting platform 55, and the protruding part of the threaded screw 54 pushes the upper surface of the uppermost transmission block 52 to apply a downward pressure to the transmission block 52, so that the transmission block 52 moves downward, the lower surface of the transmission block 52 is in close contact with the upper surface of the connecting block 51, and the connecting block 51 moves downward, and the connecting block 51 is fixedly connected with the spiral coil tube of the compression spring 3, so that the compression spring 3 is compressed downward by a distance, and the compression distance is controlled by the depth of the threaded screw 54 screwed in. The connecting block 51 and the transmission block 52 are arranged on each group of spiral coils, and the fixed rod 53 is fixedly connected with each group of transmission blocks 52, so that when the first group of transmission blocks 52 moves downward, all the following transmission blocks 52 move downward at the same distance, so as to control the elastic stiffness of the entire compression spring 3.

[0025] The compression spring 3 is provided with a plurality of threaded holes (not marked in the figure), and the connecting block 51 is installed in the threaded hole. The connecting screw 511 is screwed in the threaded hole.

[0026] The connecting screw 511 is used to make the connection between the connecting block 51 and the compression spring 3 more stable and firm.

[0027] The adjusting part 5 is provided with a slide 56, and the connecting block 51 and the transmission block 52 are slidably installed on the slide 56.

[0028] The slide 56 is designed to make the connecting block 51 and the transmission block 52 slide downward stably and linearly.

[0029] As described above, the threaded screw 54 is screwed by the operator so that the lower end of the threaded screw 54 is away from the lower end surface of the connecting platform 55, and the protruding part of the threaded screw 54 pushes the upper surface of the uppermost transmission block 52 to apply a downward pressure to the transmission block 52, so that the transmission block 52 moves downward, and the connecting block 51 moves downward, so that the compression spring 3 is compressed downward by a distance. The connecting block 51 and the transmission block 52 are arranged on each group of spiral coils, and the fixed rod 53 is fixedly connected with each group of transmission blocks 52, so that when the first group of transmission blocks 52 moves downward, all the following transmission blocks 52 move downward at the same distance, so as to control the elastic stiffness of the entire compression spring 3.

[0030] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-described embodiments. Any technical solution falling within the present concept shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A spring with adjustable stiffness, comprising a connecting end (1), characterized in that: The connecting end (1) is provided with a fixed sheet (2), a shell (4) is installed below the fixed sheet (2), the connecting end (1) is in sliding connection with the shell (4), a compression spring (3) is installed below the connecting end (1), and an adjusting part (5) is installed on the shell (4); The adjusting part (5) comprises a connecting block (51) which is slidingly installed in the shell (4), a transmission block (52) is arranged above the connecting block (51), the connecting block (51) is in fixed connection with the compression spring (3), a fixed rod (53) is installed on the transmission block (52), a connecting platform (55) is installed on the shell (4), and a transmission screw (54) is screwedly installed on the connecting platform (55).

2. The spring of claim 1, wherein: The connecting end (1) is provided with two groups, a telescopic shaft (6) is installed below the connecting end (1), and the telescopic shaft (6) is installed in the compression spring (3).

3. The spring of claim 1, wherein: The number of the connecting block (51) and the transmission block (52) is the same as the number of turns of the compression spring (3).

4. The spring of claim 1, wherein: The bottom of the transmission screw (54) is in abutment with the upper surface of the transmission block (52).

5. The spring of claim 1, wherein: The compression spring (3) is provided with a threaded through hole, the threaded through hole is provided with a plurality of groups, the connecting block (51) is installed on the threaded through hole, and a connecting screw (511) is arranged in the threaded through hole.

6. The spring of claim 1, wherein: The adjusting part (5) is provided with a slide (56), and the connecting block (51) and the transmission block (52) are slidingly installed on the slide (56).

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