High-stability adjustable pneumatic valve spring

Abstract

The utility model relates to the technical field of springs, in particular to a high-stability adjustable pneumatic valve spring which comprises a guide rod, a spring sleeved on the outer side of the guide rod, and a first spring seat and a second spring seat which are used for limiting two ends of the spring, a through hole allowing the guide rod to slide back and forth in the axial direction of the guide rod is formed in the first spring seat and the second spring seat in a penetrating mode, one end of the guide rod extends into the second spring seat to be provided with a limiting part, the other end of the guide rod is provided with a threaded section, and an adjusting seat is rotationally arranged in the first spring seat. A threaded hole matched with the threaded section is formed in the center of the adjusting seat, the length of the guide rod can be adjusted by rotating the adjusting seat, then the deformation amount of the spring is adjusted, elastic force adjustment is achieved, meanwhile, the adjusting seat is rotationally arranged in the first spring seat, and the situation that the adjusting seat rotates due to spring movement in the using process is avoided; and then the adjusting seat and the first spring seat move relatively, and the overall stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of springs, in particular to a high-stability adjustable pneumatic valve spring. Background Technique

[0002] A pneumatic valve is a valve driven by compressed air, and its components include an adjusting bolt, an actuator housing, a crank arm, a cylinder block, a cylinder shaft, a piston, a connecting rod, and a universal shaft. There is a spring inside the actuator.

[0003] The existing pneumatic valve springs are generally fixed after assembly and cannot adjust the spring force according to requirements. For example, in the Chinese patent literature database, a spring for an actuator disclosed in the application number 202123146579.7 has poor practicability. Summary of the Invention

[0004] The purpose of the utility model is to provide a high-stability adjustable pneumatic valve spring to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A high-stability adjustable pneumatic valve spring, including a guide rod, a spring sleeved outside the guide rod, and a first spring seat and a second spring seat for limiting both ends of the spring. Through holes for accommodating the axial reciprocating sliding of the guide rod are provided through the first spring seat and the second spring seat. One end of the guide rod extends into the second spring seat and is provided with a limiting portion, and the other end of the guide rod is provided with a threaded section. An adjusting seat is rotatably arranged inside the first spring seat, and a threaded hole matching the threaded section is provided at the center of the adjusting seat.

[0006] Further, the first spring seat includes a frustum-shaped first positioning boss and a first limiting flange arranged at the larger end of the first positioning boss. The smaller end of the first positioning boss is inserted into the inner side of the spring, and the first limiting flange abuts against one end of the spring to limit the spring.

[0007] Further, the second spring seat includes a frustum-shaped second positioning boss and a second limiting flange arranged at the larger end of the second positioning boss. The smaller end of the second positioning boss is inserted into the inner side of the spring, and the second limiting flange abuts against one end of the spring to limit the spring.

[0008] Further, one end of the first spring seat is provided with an opening, and several grooves are provided at one end of the adjusting seat close to the opening.

[0009] Further, an annular sliding groove is provided on the outer peripheral wall of the adjusting seat.

[0010] Further, an annular sliding rail that matches the annular sliding groove is provided on the inner peripheral wall of the first spring seat.

[0011] Further, a limit bolt is threadedly connected to the side wall of the first spring seat, and one end of the limit bolt extends into the annular sliding groove, and the limit bolt can freely rotate inside the annular sliding groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: By rotating the adjusting seat, the length of the guide rod can be adjusted, and then the deformation amount of the spring can be adjusted to achieve the adjustment of the elastic force. At the same time, the adjusting seat is rotatably arranged inside the first spring seat to prevent the spring from moving during use and causing the adjusting seat to rotate, and then causing relative movement between the adjusting seat and the first spring seat, thereby improving the overall stability. Description of the Drawings

[0013] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0014] Figure 2 is an exploded view of the present utility model.

[0015] In the figure: 1. First spring seat; 101. First positioning boss; 102. First limiting flange; 2. Second spring seat; 201. Second positioning boss; 202. Second limiting flange; 3. Guide rod; 301. Limiting part; 302. Threaded section; 4. Spring; 5. Adjusting seat; 501. Threaded hole; 502. Groove; 503. Annular sliding groove; 6. Limit bolt. Detailed Embodiments

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. In the description of the present utility model, it should be noted that the descriptions of terms such as "first" and "second" are only for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. For the terms "including" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings, the intention is to cover non-exclusive inclusion.

[0017] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "linkage", and "setting" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, in the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0018] Please refer to Figure 1-2 , an embodiment provided by the present utility model: a highly stable adjustable pneumatic valve spring, including a guide rod 3, a spring 4 sleeved outside the guide rod 3, and a first spring seat 1 and a second spring seat 2 for limiting both ends of the spring 4. The guide rod 3 is a cylindrical rod-shaped structure. Through holes for accommodating the axial reciprocating movement of the guide rod 3 are provided through the first spring seat 1 and the second spring seat 2. Specifically, the first spring seat 1 includes a frustum-shaped first positioning boss 101 and a first limiting flange 102 provided at the larger end of the first positioning boss 101. The first positioning boss 101 and the first limiting flange 102 are integrally formed, and the first positioning boss 101 has a certain length. The smaller end of the first positioning boss 101 is inserted inside the spring 4, and the first limiting flange 102 abuts against one end of the spring 4 for limiting the spring 4. The second spring seat 2 includes a frustum-shaped second positioning boss 201 and a second limiting flange 202 provided at the larger end of the second positioning boss 201. The second positioning boss 201 and the second limiting flange 202 are integrally formed. The smaller end of the second positioning boss 201 is inserted inside the spring 4, and the second limiting flange 202 abuts against one end of the spring 4 for limiting the spring 4. The through holes are provided at the centers of the first positioning boss 101 and the second positioning boss 201 to facilitate the reciprocating movement of the guide rod 3. The frustum-shaped first positioning boss 101 and the second positioning boss 201 facilitate the positioning of springs 4 with different sizes.

[0019] One end of the guide rod 3 extends into the second spring seat 2 and is provided with a limiting portion 301. The size of the limiting portion 301 is larger than the through hole at the center of the second positioning boss 201, which plays a role in limiting and prevents the guide rod 3 from separating from the second spring seat 2. The other end of the guide rod 3 is provided with a threaded section 302. An adjusting seat 5 is rotatably arranged inside the first spring seat 1, and a threaded hole 501 matching the threaded section 302 is arranged at the center of the adjusting seat 5. One end of the first spring seat 1 is provided with an opening. Two arc-shaped grooves 502 are arranged at one end of the adjusting seat 5 close to the opening, and other numbers and shapes can also be set according to needs. During use, pinching the two grooves 502 can drive the adjusting seat 5 to rotate. In this embodiment, the adjusting seat 5 is a frustum-shaped structure adapted to the first positioning boss 101, and there is a gap reserved between the end face of its larger-sized end and the end face of the first limiting flange 102 to prevent the adjusting seat 5 from rotating under external force. During use, when it is necessary to adjust the elastic force of the spring 4, fix one end of the guide rod 3, pinch the groove 502, and rotate the adjusting seat 5 to make the adjusting seat 5 and the guide rod 3 rotate relatively, adjust the length of the threaded section 302 inserted into the adjusting seat 5, and then the deformation amount and elastic force of the spring 4 can be adjusted to meet different use requirements. At the same time, the adjusting seat 5 is arranged inside the first spring seat 1 to prevent the adjusting seat 5 from directly contacting the spring 4, which may cause the rotation of the adjusting seat 5 due to the expansion and contraction of the spring 4, and then cause the displacement of the guide rod 3 and change the elastic force of the spring 4.

[0020] An annular sliding groove 503 is arranged on the outer peripheral wall of the adjusting seat 5. In this embodiment, a limiting bolt 6 is threadedly connected to the side wall of the first spring seat 1, and one end of the limiting bolt 6 extends into the annular sliding groove 503. The limiting bolt 6 can freely rotate inside the annular sliding groove 503. The limiting bolt 6 can play a role in limiting the adjusting seat 5, making the adjusting seat 5 always rotate inside the first spring seat 1 to prevent axial displacement and is convenient for disassembly and assembly. Further, an annular sliding rail matching the annular sliding groove 503 can also be arranged on the inner peripheral wall of the first spring seat 1.

[0021] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A high-stability adjustable pneumatic valve spring, comprising a guide rod (3), a spring (4) sleeved on the outside of the guide rod (3), and a first spring seat (1) and a second spring seat (2) for limiting the positions of both ends of the spring (4), characterized in that: The first spring seat (1) and the second spring seat (2) are provided with through holes for accommodating the guide rod (3) to slide back and forth along the axial direction thereof; one end of the guide rod (3) extends to the inside of the second spring seat (2) and a limiting portion (301) is provided, and the other end of the guide rod (3) is provided with a threaded section (302); an adjustment seat (5) is rotatably provided inside the first spring seat (1), and a threaded hole (501) matching the threaded section (302) is provided at the center of the adjustment seat (5).

2. The high stability adjustable pneumatic valve spring according to claim 1, characterized in that: The first spring seat (1) comprises a first truncated cone-shaped positioning boss (101) and a first limiting flange (102) arranged at a larger end of the first positioning boss (101); the smaller end of the first positioning boss (101) is inserted into the inner side of the spring (4); the first limiting flange (102) abuts against one end of the spring (4) to limit the spring (4).

3. The high stability adjustable pneumatic valve spring according to claim 1, characterized in that: The second spring seat (2) comprises a truncated cone-shaped second positioning boss (201) and a second limiting flange (202) arranged at a larger end of the second positioning boss (201); the smaller end of the second positioning boss (201) is inserted into the inner side of the spring (4); the second limiting flange (202) abuts against one end of the spring (4) to limit the spring (4).

4. The high stability adjustable pneumatic valve spring according to claim 1, characterized in that: One end of the first spring seat (1) is provided with an opening, and one end of the adjustment seat (5) close to the opening is provided with a plurality of grooves (502).

5. The high stability adjustable pneumatic valve spring according to claim 1, characterized in that: An annular sliding groove (503) is provided on the outer peripheral wall of the adjustment seat (5).

6. The high stability adjustable pneumatic valve spring according to claim 5, characterized in that: An annular slide rail matching the annular slide groove (503) is provided on the inner peripheral wall of the first spring seat (1).

7. The high stability adjustable pneumatic valve spring according to claim 5, characterized in that: A limit bolt (6) is threadedly connected to the side wall of the first spring seat (1), and one end of the limit bolt (6) extends into the interior of the annular slide groove (503). The limit bolt (6) can rotate freely inside the annular slide groove (503).

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