Simple structure for adjusting pressure spring of anti-wear device

Abstract

The utility model relates to a simple anti-wear device adjusting pressure spring structure which comprises a forming spring seat, the forming spring seat is a groove plate with a cylindrical groove, the cylindrical groove plate of the forming spring seat is arranged in the inner diameter of a compression spring and is coaxial with the compression spring, and the top plane of the cylindrical groove plate is pressed on the top flat end face of the compression spring. A stepped groove is formed in the bottom of the cylindrical groove, a plurality of steel balls are arranged in the stepped groove, the bottom of the adjusting lead screw is arranged on the top faces of the steel balls, an arc-shaped groove is formed in the circumference of the bottom of the adjusting lead screw, a protection plate is arranged on the inner wall of the cylindrical groove of the forming spring seat, and a round hole for the adjusting lead screw to pass through is formed in the center of the protection plate. The utility model has the beneficial effects that the adjusting screw rod and the steel ball are in rolling friction, the friction force is reduced, the friction resistance of the compression spring structure is increased, the adjusting screw rod is vertically pressed down, the downward pressure is concentrated, the force applied by the adjusting screw rod is smaller, the compression spring is vertically compressed, and the use function of the compression spring is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of adjusting compression springs, in particular to the structure of an adjusting compression spring of a simple anti-wear device. Background Art

[0002] In many assembly structures, compression springs are used to resist pressure and (or) store energy. As the compression amount of the compression spring increases, the compression force increases. In the assembly structure, an adjusting screw is usually used to adjust the compression amount of the compression spring to adjust the tension of the spring. However, since the compression spring itself has a certain preload, the adjusting screw directly contacts the compression spring during the downward pressure, and the required downward pressure is relatively large. Especially for springs with large diameters and heavy spring wires, a thrust bearing is usually used in conjunction with an adjusting screw to achieve the function of the compression spring. During the cooperation between the thrust bearing and the screw, the verticality of the screw cannot be guaranteed, and the screw surface is in direct contact with the surface of the pressing plate, resulting in large friction, large bearing load, severe wear, short service life, and high cost. In addition, the compression spring cannot guarantee vertical compression during the pressing process, and the compression spring is pressed eccentrically, which affects the use of the compression spring. Summary of the invention

[0003] In order to solve the technical problems of large friction of the screw rod and easy eccentricity of the spring during the downward adjustment of the compression spring, the utility model provides a structure of a simple anti-wear device for adjusting the compression spring, through a groove plate with a cylindrical groove, a stepped groove with a circular arc groove wall is provided in the groove plate, a plurality of steel balls are arranged in the stepped groove, and the rolling friction between the adjustment screw rod and the steel balls is reduced, the friction force is increased, the friction resistance of the compression spring structure is increased, the adjustment screw rod and the compression spring are automatically guided to the center, ensuring that the adjustment screw rod is pressed vertically, the downward pressure is concentrated, the adjustment screw rod applies less force, the cylindrical groove guides the compression spring, prevents the compression spring from being pressed down and eccentric, ensures that the compression spring is compressed vertically, and improves the use function of the compression spring.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A structure of a simple anti-wear device for adjusting a compression spring comprises an adjusting screw and a fixing nut, wherein the adjusting screw is threadedly connected to the fixing nut, the fixing nut is fixed on a support frame, and the adjusting screw passes through the support frame. The structure of the simple anti-wear device for adjusting the compression spring also comprises a formed spring seat, wherein the formed spring seat is a groove plate with a cylindrical groove, the cylindrical groove plate of the formed spring seat is arranged in the inner diameter of the compression spring and is coaxial with the compression spring, the top plane of the formed spring seat is pressed on the top flat end surface of the compression spring, the bottom of the cylindrical groove is provided with a stepped groove, a plurality of steel balls are arranged in the stepped groove, the bottom of the adjusting screw is arranged on the top surface of the steel ball, an arc-shaped groove is arranged on the bottom circumference of the adjusting screw, a protective plate is provided on the inner wall of the cylindrical groove of the formed spring seat, and a circular hole through which the adjusting screw passes is provided at the center of the protective plate.

[0006] Furthermore, the structure of the simple anti-wear device adjusting the compression spring also includes a protective cover, and the protective cover stands on the support frame by cooperating with the thread of the fixing nut.

[0007] Furthermore, the stepped groove wall of the stepped groove is an arc surface.

[0008] Furthermore, both the inner circle and the outer circle of the fixing nut are provided with threads.

[0009] Furthermore, the outer surface of the steel ball is provided with a wear-resistant layer.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. When the compression spring is adjusted by adjusting the screw rod, it rubs against the steel ball, and the sliding friction becomes rolling friction, the friction force is reduced, the anti-friction performance of the overall structure is improved, and the service life is increased.

[0012] 2. During the rolling friction and downward pressure of the adjusting screw and the steel ball, the steel ball plays a centering role, automatically adjusting the center line of the formed spring seat to coincide with the center line of the adjusting screw, ensuring that the center line of the compression spring coincides with the center line of the adjusting screw, so that the downward pressure of the adjusting screw is concentrated, and the compression spring is more labor-saving and faster to adjust.

[0013] 3. The support frame and the fixing nut guide the adjusting screw rod during the pressing process, so that the center line of the adjusting screw rod remains vertical, ensuring that the adjusting screw rod is not eccentric during the vertical pressing process, and ensuring that the downward pressure is always vertically downward.

[0014] 4. The cylindrical groove plate of the formed spring seat extends into the inner diameter of the compression spring, playing a compression guide role, preventing eccentricity during the compression process of the compression spring, ensuring vertical compression of the compression spring, and improving the use function of the compression spring.

[0015] 5. The adjusting compression spring has a simple structure, quick and convenient processing, reduced cost and a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a simple anti-wear device adjusting compression spring described in the utility model.

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the formed spring seat and the steel ball described in the utility model.

[0018] In the figure: 1. Adjusting screw; 2. Fixing nut; 3. Formed spring seat; 4. Protective plate; 5. Steel ball; 6. Compression spring; 7. Step groove; 8. Arc surface; 9. Arc groove; 10. Cylindrical groove; 11. Support frame; 12. Wrench; 13. Protective cover. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0020] like Figure 1-Figure 2 As shown, the working principle of the structure of a simple anti-wear device for adjusting the compression spring is as follows: the bottom of the adjusting screw rod 1 is adjusted to contact the spherical surface of the steel ball 5 during the pressing process, and the rolling friction between the adjusting screw rod 1 and the steel ball 5 is adjusted during the rotation and pressing process, so that the friction force is reduced, the wear resistance is increased, and the service life is increased. The steel ball 5 automatically adjusts the axis of the adjusting screw rod 1 and the compression spring 6 by rolling during the pressing process to make them coincide, the pressure is more concentrated, and the compression spring 6 can better adjust the pressing amount. The verticality of the adjusting screw rod 1 is guaranteed by the guide adjustment of the support seat 11 and the protective plate 4. The adjustment of the steel ball 5 is used to ensure that the adjusting screw rod 1 coincides with the center line of the formed spring seat 3 and the compression spring 6, and no eccentricity occurs, thereby ensuring that the compression spring 6 is vertically compressed, thereby improving the performance of the compression spring structure.

[0021] like Figure 1-Figure 2As shown, a structure of a simple anti-wear device adjusting compression spring includes an adjusting screw rod 1 and a fixing nut 2, wherein the adjusting screw rod 1 is threadedly connected to the fixing nut 2, the fixing nut 2 is fixed on a support frame 11, the adjusting screw rod 1 passes through the support frame 11, the top of the adjusting screw rod 1 is rotated by a wrench 12, and the elongation of the adjusting screw rod 1 is adjusted by the threaded connection between the fixing nut 2 and the adjusting screw rod 1, and the structure of the simple anti-wear device adjusting compression spring also includes a formed spring seat 3, wherein the formed spring seat 3 is a groove plate with a cylindrical groove 10, and the cylindrical groove 10 of the formed spring seat 3 is arranged on the inner diameter of the compression spring 6 In the embodiment, the top plane is pressed on the top flat end surface of the compression spring 6, the cylindrical groove 10 of the formed spring seat 3 has a guiding effect on the compression spring 6, prevents the compression spring 6 from being eccentric during the pressing process, ensures that the compression spring 6 is vertically compressed, and improves the use function of the compression spring 6. The top plane of the formed spring seat 3 is fixedly connected to the top flat end surface of the compression spring 6, and the adjustment screw rod 1 applies downward pressure to the formed spring seat 3. The formed spring seat 3 presses the compression spring 6 downward from the top flat end surface of the compression spring 6. The bottom of the cylindrical groove 10 is provided with a stepped groove 7, and a plurality of steel balls 5 are arranged in the stepped groove 7. The bottom of the adjustment screw rod 1 is arranged The top surface of the steel ball 5 and the bottom circumference of the adjusting screw rod 1 are provided with an arc groove 9. The adjusting screw rod 1 is pressed against the top surface of the steel ball 5 during the process of rotating and lowering. During the process of pressing the adjusting screw rod 1, the pressing force directly acts on the spherical surfaces of multiple steel balls 5. The steel balls 5 are pushed to the groove wall position of the stepped groove 7 by the pressing force. The outer surface of the steel ball 5 fits with the arc surface 8 of the stepped groove 7 wall. The arc groove 9 at the bottom of the adjusting screw rod 1 accommodates the steel balls 5. The steel balls 5 are spaced apart in the middle of the arc groove 9 at the bottom of the adjusting screw rod. During the process of rotating and pressing the adjusting screw rod 1, the steel balls 5 roll in the arc groove 9 and the arc surface 8, and the rolling friction between the adjusting screw rod 1 and the steel balls 5 is generated. While the friction is reduced, the pressing force is transmitted to the formed spring seat 3 and the compression spring 6, so as to achieve the effect of pressing down the compression spring 6, and the steel ball 5 plays a centering role during the rolling process. The steel ball 5 automatically adjusts the center line of the adjusting screw 1 to coincide with the center line of the formed spring seat 3, so that the center line of the compression spring 6 connected thereto also coincides with the center line of the adjusting screw 1, avoiding the occurrence of center offset between the two, and the pressing force application point is more concentrated. The inner wall of the cylindrical groove 10 of the formed spring seat 3 is provided with a protective plate 4, and a circular hole is provided in the center of the protective plate 4 for the adjusting screw 1 to pass through, and the protective plate 4 supports and protects the adjusting screw 1 at the bottom.

[0022] like Figure 1 As shown, further, the structure of the simple anti-wear device adjusting the compression spring also includes a protective cover 13, and the protective cover 13 stands on the support frame 11 through threaded cooperation with the fixing nut 2.

[0023] like Figure 1As shown, further, the step groove wall of the step groove 7 is an arc surface 8, and the arc surface 8 in the step groove 7 and the arc groove 9 of the adjusting screw 1 fit the spherical surface of the steel ball 5. The steel ball 5 rolls in the arc groove 9 and the arc surface 8 to reduce friction, and the steel ball 5 automatically adjusts the alignment between the formed spring seat 3 and the adjusting screw 1 during the rolling process to ensure that the center lines of the adjusting screw 1 and the compression spring 6 coincide.

[0024] like Figure 1 As shown, further, the inner circle and the outer circle of the fixing nut 2 are both provided with threads, the inner thread of the fixing nut 2 cooperates with the adjusting screw 1 to control the elongation of the adjusting screw 1, and the outer thread of the fixing nut 2 cooperates with the inner thread at the bottom of the protective cover 13 to fix the protective cover 13 on the support frame 11.

[0025] Furthermore, the outer surface of the steel ball 5 is provided with a wear-resistant layer.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A structure of a simple anti-wear device for adjusting a compression spring, comprising an adjusting screw and a fixing nut, wherein the adjusting screw is threadedly connected to the fixing nut, the fixing nut is fixed on a support frame, and the adjusting screw passes through the support frame, characterized in that: The structure of the simple anti-wear device adjusting compression spring also includes a formed spring seat, which is a groove plate with a cylindrical groove. The cylindrical groove plate of the formed spring seat is arranged in the inner diameter of the compression spring and is coaxial with the compression spring. The top plane of the formed spring seat is pressed on the top flat end surface of the compression spring. The bottom of the cylindrical groove is provided with a stepped groove, and a plurality of steel balls are arranged in the stepped groove. The bottom of the adjusting screw rod is arranged on the top surface of the steel ball, and an arc-shaped groove is arranged on the bottom circumference of the adjusting screw rod. The inner wall of the cylindrical groove of the formed spring seat is provided with a protective plate, and a circular hole through which the adjusting screw rod passes is provided in the center of the protective plate.

2. The structure of a simple anti-wear device for adjusting a compression spring according to claim 1 is characterized in that: The structure of the simple anti-wear device for adjusting the compression spring also includes a protective cover, and the protective cover stands on the support frame through thread cooperation with the fixing nut.

3. The structure of a simple anti-wear device for adjusting a compression spring according to claim 1 is characterized in that: The stepped groove wall of the stepped groove is an arc surface.

4. The structure of a simple anti-wear device for adjusting a compression spring according to claim 1 is characterized in that: The inner circle and the outer circle of the fixing nut are both provided with threads.

5. The structure of a simple anti-wear device for adjusting a compression spring according to claim 1 is characterized in that: The outer surface of the steel ball is provided with a wear-resistant layer.

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