Compression spring for hydraulic actuator

Abstract

The utility model provides a compression spring for a hydraulic actuator, and relates to the technical field of actuators. The compression spring for the hydraulic actuator comprises a spring body, the two ends of the spring body are both connected with fixing pieces, the sides, away from the spring body, of the fixing pieces are provided with mounting pieces, the sides, close to each other, of the fixing pieces and the mounting pieces are both connected with a plurality of teeth, and the teeth on the fixing pieces and the teeth on the mounting pieces are meshed with each other. And the middle part of the mounting part is connected with a positioning part. According to the compression spring for the hydraulic actuator, the fixing piece is clamped through the self-locking mechanism, so that the fixing piece and the positioning piece are fixed together, meanwhile, the fixing piece is prevented from rotating through meshing and clamping of the teeth, and therefore the end of the spring body is fixed, and the effect of rapid mounting and dismounting is achieved; therefore, the problems that when an existing device is damaged and needs to be disassembled or replaced, independent disassembly is not convenient, and assembly and disassembly are troublesome are solved.

Description

Technical Field

[0001] This utility model relates to a compression spring, specifically a compression spring for a hydraulic actuator, and belongs to the technical field of actuators. Background Technology

[0002] Hydraulic actuators are an important component of hydraulic systems. They convert hydraulic energy into mechanical energy to achieve various mechanical movements and operations. Springs are used to reset the actuator, especially for double-acting hydraulic actuators. When hydraulic oil enters one side of the actuator and pushes the piston, the spring is compressed and stores energy. When the hydraulic oil pressure disappears or decreases, the spring releases energy and pushes the piston back to its initial position. For actuators, springs are an extremely important part.

[0003] Existing springs are generally installed inside a spring cylinder, with one end in contact with the piston and the other end mounted on the inner wall of the spring cylinder to provide elastic force to the piston. To prevent the spring end from shifting or rotating and to increase stability, existing springs are generally fixedly installed, requiring the end to be welded to the outside during installation. When damage occurs and disassembly or replacement is needed, it is inconvenient to remove them individually, and both installation and disassembly are quite troublesome. Therefore, we provide a compression spring for hydraulic actuators to solve the above problems. Utility Model Content

[0004] To solve the above problems, this utility model provides a compression spring for a hydraulic actuator, and the specific technical solution is as follows:

[0005] A compression spring for a hydraulic actuator includes a spring body, with fixing members connected to both ends of the spring body. A mounting member is provided on the side of the fixing member away from the spring body. Multiple teeth are connected to the sides of the fixing member and the mounting member that are close to each other, and the teeth on the fixing member and the mounting member mesh with each other. A positioning member is connected to the middle of the mounting member. The outer surface of the positioning member is slidably connected to the inner wall of the fixing member. Multiple self-locking mechanisms are provided inside the positioning member. An unlocking mechanism is also provided inside the positioning member, and the unlocking mechanism is located among the multiple self-locking mechanisms.

[0006] Preferably, a plurality of reinforcing rods are fixedly connected to one side of the fixing member near the spring body, and the outer surface of the reinforcing rods is fixedly connected to the spring body.

[0007] Preferably, a spring cylinder is provided on the outside of the spring body, one end of the spring cylinder is detachably connected to a disassembly cover, and the other end of the spring cylinder is slidably connected to a telescopic component.

[0008] Preferably, the self-locking mechanism includes a locking block, the outer surface of which is slidably connected to a positioning member, a self-locking spring connected to one side of the locking block, and the end of the self-locking spring away from the locking block connected to the positioning member.

[0009] Preferably, a connecting rope is also connected to one side of the card block, and the outer surface of the connecting rope is slidably connected to the positioning member.

[0010] Preferably, the unlocking mechanism includes a rotating rod, the outer surface of which is rotatably connected to the positioning member, and a connecting rope is connected to the outer surface of the rotating rod.

[0011] Preferably, a rotating component is connected to the end of the rotating rod.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This hydraulic actuator uses a compression spring and incorporates components such as a fixing element and a self-locking mechanism. The self-locking mechanism holds the fixing element in place, thus securing it to the positioning element. Simultaneously, the toothed engagement prevents rotation of the fixing element, thereby fixing the end of the spring body and achieving quick installation. During disassembly, a screwdriver or similar tool is used to move the unlocking mechanism, releasing the self-locking mechanism and allowing the spring body to be pulled out. This facilitates disassembly and solves the problem of existing systems where disassembly and replacement are difficult and cumbersome.

[0014] 2. The compression spring of this hydraulic actuator is equipped with positioning components and reinforcing rods. The fixing component has an inner inclined surface that matches the truncated cone. The inner inclined surface guides the positioning component towards the center, allowing the positioning component to be smoothly inserted into the interior of the fixing component. At the same time, the inner inclined surface can also compress the self-locking mechanism for easy use. The setting of the reinforcing rod allows the end of the spring body to be fixed to the fixing component at multiple positions, which greatly increases the stability of the spring body and makes it less likely for the spring body to break at the connection with the fixing component. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the spring body in this utility model;

[0017] Figure 3 This is a cross-sectional view of the spring body in this utility model;

[0018] Figure 4 This is a cross-sectional view of the fastener in this utility model;

[0019] Figure 5 This is a cross-sectional view of the mounting component in this utility model;

[0020] Figure 6 This is a three-dimensional structural diagram of the rotating component in this utility model.

[0021] Figure descriptions: 1. Spring body; 2. Fixing component; 3. Mounting component; 4. Tooth; 5. Positioning component; 6. Self-locking mechanism; 601. Locking block; 602. Self-locking spring; 603. Connecting rope; 7. Unlocking mechanism; 701. Rotating rod; 702. Rotating component; 8. Reinforcing rod; 9. Spring cylinder; 10. Removable cover; 11. Telescopic component. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] Please see Figures 1-5 The device includes a spring body 1, with fixing members 2 connected to both ends of the spring body 1. A mounting member 3 is provided on the side of the fixing member 2 away from the spring body 1. Multiple teeth 4 are connected to the sides of the fixing member 2 and the mounting member 3 that are close to each other. The teeth 4 on the fixing member 2 and the mounting member 3 mesh with each other. A positioning member 5 is connected to the middle of the mounting member 3. The outer surface of the positioning member 5 is slidably connected to the inner wall of the fixing member 2. Multiple self-locking mechanisms 6 are provided inside the positioning member 5. An unlocking mechanism 7 is also provided inside the positioning member 5, and the unlocking mechanism 7 is located between the multiple self-locking mechanisms 6. The fixing member 2 consists of a cylinder and an annular plate extending outward from the end of the cylinder; the cylinder and the annular plate are integral. The structure includes a cylinder located inside the spring body 1, supporting it. The end of the spring body 1 is welded to the annular plate for a fixed connection, thus making the fixing part 2 and the spring body 1 an integral structure. The teeth 4 on the mounting part 3 mesh with the teeth 4 on the fixing part 2 to prevent the fixing part 2 from rotating, thereby preventing the two ends of the spring body 1 from rotating. The positioning part 5 consists of a cylinder and a frustum at the end. The fixing part 2 is provided with an inner inclined surface that matches the frustum. The inner inclined surface guides the positioning part 5 towards the center, allowing the positioning part 5 to be smoothly inserted into the interior of the fixing part 2. At the same time, the inner inclined surface can also press the self-locking mechanism 6 for easy use.

[0024] Multiple reinforcing rods 8 are fixedly connected to one side of the fixing member 2 near the spring body 1. The outer surface of the reinforcing rods 8 is fixedly connected to the spring body 1. The lengths of the multiple reinforcing rods 8 are different. Since the end of the spring body 1 is spiral, the existing ones are generally fixed at only one point at the end. By setting the reinforcing rods 8, the end of the spring body 1 can be fixed to the fixing member 2 at multiple positions. Although this reduces the usable length of the spring body 1 slightly, it greatly increases the stability of the spring body 1 and makes it less likely for the spring body 1 to break at the connection with the fixing member 2.

[0025] A spring cylinder 9 is provided on the outside of the spring body 1. A disassembly cover 10 is detachably connected to one end of the spring cylinder 9, and a telescopic member 11 is slidably connected to the other end of the spring cylinder 9. The upper mounting member 3 is fixed together with the telescopic member 11 and can slide inside the spring cylinder 9, thereby realizing the axial movement of the telescopic member 11. The lower mounting member 3 is fixed to the disassembly cover 10. After the disassembly cover 10 is installed, the lower mounting member 3 can be fixed. The spring cylinder 9 and the telescopic member 11 are all prior art. This is only to illustrate the connection method between this application and existing components.

[0026] The self-locking mechanism 6 includes a locking block 601. The outer surface of the locking block 601 is slidably connected to the positioning member 5. A self-locking spring 602 is connected to one side of the locking block 601. The end of the self-locking spring 602 away from the locking block 601 is connected to the positioning member 5. The locking block 601 can slide inside the positioning member 5. The self-locking spring 602 provides an outward sliding force to the positioning member 5, allowing the locking block 601 to extend to the outside of the positioning member 5 without external force. A pin is connected to the side of the locking block 601. A corresponding rectangular groove is provided on the inner wall of the positioning member 5. When the locking block 601 extends to the outside of the positioning member 5, the rectangular groove restricts the positioning member 5, preventing the locking block 601 from completely popping out of the inside of the positioning member 5. The positioning member 5 is also provided with an inclined surface, which can retract into the inside of the positioning member 5 when squeezed by the fixing member 2 and its inner inclined surface.

[0027] One side of the locking block 601 is also connected to a connecting rope 603. The outer surface of the connecting rope 603 is slidably connected to the positioning member 5. The connecting rope 603 can be bent and uses a common rope. It can pull the locking block 601 back into the positioning member 5.

[0028] The unlocking mechanism 7 includes a rotating rod 701. The outer surface of the rotating rod 701 is rotatably connected to the positioning member 5. A connecting rope 603 is connected to the outer surface of the rotating rod 701. When the rotating rod 701 rotates, the connecting rope 603 can be wrapped around it, thereby pulling the connecting rope 603 and causing the connecting rope 603 to pull the locking block 601.

[0029] The end of the rotating rod 701 is connected to a rotating component 702. There are two rotating components 702, and the two rotating components 702 have different shapes. The lower rotating component 702 has a paddle on its outside, which can be turned with a tool, and the upper rotating component 702 has a bolt hole, which can be turned with a screwdriver.

[0030] During installation, the spring body 1 and the end fixing member 2 are first inserted into the spring cylinder 9, so that the fixing member 2 fits onto the outside of the positioning member 5. When inserted to the bottom, the fixing member 2 is locked by the self-locking mechanism 6, thus fixing the fixing member 2 and the positioning member 5 together to prevent them from separating. At the same time, the teeth 4 engage to prevent the fixing member 2 from rotating, thereby fixing the end of the spring body 1. Then, the disassembly cover 10 at the other end is fastened in the same way, fixing the positioning member 5 on the disassembly cover 10 to the other end of the spring body 1. Next, fix the disassembly cover 10 onto the spring cylinder 9. The disassembly cover 10 is fixed with bolts, thereby achieving the effect of quick installation. When disassembling, first remove the disassembly cover 10. Under the action of the extension and retraction of the spring body 1, pull out the disassembly cover 10, thereby pulling out the positioning part 5. Use a screwdriver or other tools to turn the unlocking mechanism 7, so that the self-locking mechanism 6 releases the restriction on the fixing part 2, so that the lower mounting part 3 and the positioning part 5 can be taken out. Then turn the upper self-locking mechanism 6, which releases the restriction on the upper fixing part 2, thereby pulling out the spring body 1, achieving the effect of easy disassembly.

[0031] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A compression spring for a hydraulic actuator, comprising a spring body (1), characterized in that: Both ends of the spring body (1) are connected to fixing members (2). The fixing member (2) is provided with a mounting member (3) on the side away from the spring body (1). The fixing member (2) and the mounting member (3) are connected with multiple teeth (4) on the side that are close to each other. The teeth (4) on the fixing member (2) and the mounting member (3) mesh with each other. The middle part of the mounting member (3) is connected to a positioning member (5). The outer surface of the positioning member (5) is slidably connected to the inner wall of the fixing member (2). Multiple self-locking mechanisms (6) are provided inside the positioning member (5). An unlocking mechanism (7) is also provided inside the positioning member (5), and the unlocking mechanism (7) is located between the multiple self-locking mechanisms (6).

2. A compression spring for a hydraulic actuator according to claim 1, characterized in that: The fastener (2) has multiple reinforcing rods (8) fixedly connected to one side of the spring body (1), and the outer surface of the reinforcing rods (8) is fixedly connected to the spring body (1).

3. A compression spring for a hydraulic actuator according to claim 1, characterized in that: The spring body (1) is provided with a spring cylinder (9) on its outside. One end of the spring cylinder (9) is detachably connected to a disassembly cover (10), and the other end of the spring cylinder (9) is slidably connected to a telescopic member (11).

4. A compression spring for a hydraulic actuator according to claim 1, characterized in that: The self-locking mechanism (6) includes a locking block (601), the outer surface of which is slidably connected to the positioning member (5), and a self-locking spring (602) is connected to one side of the locking block (601). The end of the self-locking spring (602) away from the locking block (601) is connected to the positioning member (5).

5. A compression spring for a hydraulic actuator according to claim 4, characterized in that: One side of the card block (601) is also connected to a connecting rope (603), and the outer surface of the connecting rope (603) is slidably connected to the positioning member (5).

6. A compression spring for a hydraulic actuator according to claim 5, characterized in that: The unlocking mechanism (7) includes a rotating rod (701), the outer surface of which is rotatably connected to the positioning member (5), and a connecting rope (603) is connected to the outer surface of the rotating rod (701).

7. A compression spring for a hydraulic actuator according to claim 6, characterized in that: The end of the rotating rod (701) is connected to a rotating component (702).

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