Hollow piston rod with end tooth punching structure

Abstract

The utility model provides a hollow piston rod with an end tooth punching structure, which belongs to the technical field of piston rod connecting structure design and comprises an upper piston rod, an external thread is arranged at the top end of the upper piston rod, a lower piston rod is arranged at the tail end of the upper piston rod, and an empty groove is formed in the inner wall of the upper piston rod. The inner wall of the empty groove is fixedly connected with a spring, the tail end of the spring is fixedly connected with a pushing block, a sliding groove is formed in the surface of the upper piston rod, the sliding groove is slidably connected with the pushing block, and the pushing block is slidably connected to the inner wall of the empty groove and fixedly connected with the spring. According to the scheme, the hollow piston rod with the end tooth punching structure is designed, an internal locking mechanism, an optimized sealing design and a lightweight structure are introduced, the connection reliability and operation convenience are remarkably improved, and meanwhile the good sealing effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of piston rod connecting structure design, specifically relates to a hollow piston rod of end portion beat tooth structure. BACKGROUND

[0002] In hydraulic and pneumatic systems, the piston rod as a key executive component, its connecting structure performance directly affects the operation efficiency and reliability of the whole system. The traditional piston rod adopts screw connection or flange connection and the like, these methods expose several shortcomings in practical application: first, the connecting part is easy to appear loose phenomenon under the condition of long-term bearing alternating load, reduces the stability and safety of the system, second, the traditional connecting mode is complex to operate, usually needs to use special tool to install and dismount, this not only increases the maintenance cost, also limits the application flexibility under the space limited environment, finally, the sealing performance of the connecting part in the prior art is often not ideal, especially under high pressure environment, can cause medium leakage, influences the working accuracy and efficiency of the system.

[0003] The utility model discloses a kind of hollow piston rods of end portion beat tooth structure, introduce internal locking mechanism, optimized sealing design and light structure, significantly improve the reliability and operation convenience of connection, while ensuring good sealing effect, adapt to the demand of modern industry to high-efficiency, stable and easily maintained hydraulic and pneumatic components. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a kind of hollow piston rods of end portion beat tooth structure, to solve the problems of insufficient piston rod connection reliability in prior art, complex operation and poor sealing performance.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of hollow piston rod of end portion beat tooth structure, comprising:

[0007] Upper piston rod, the top of the upper piston rod is provided with external thread, the end of the upper piston rod is provided with lower piston rod;

[0008] The inner wall of the upper piston rod is carved with hollow slot, the inner wall of the hollow slot is fixedly connected with spring, the end of the spring is fixedly connected with push block, the surface of the upper piston rod is carved with sliding slot, the push block is slidably connected in the sliding slot, and the push block is slidably connected to the inner wall of the hollow slot and fixedly connected with the spring.

[0009] As a preferred scheme of the utility model, the inner wall of the hollow slot is fixedly connected with two symmetrical limit blocks, the top of the lower piston rod is fixedly connected with extension block, and the width of the extension block is less than the gap between the two symmetrical limit blocks.

[0010] As a preferred scheme of the utility model, the top end of the extension block is drilled with a clamping groove, and the clamping groove is movably clamped with the push block.

[0011] As a preferred scheme of the utility model, a fixing ring is sleeved at the surface connection of the upper piston rod and the lower piston rod, and two pressure rods are rotatably connected to the surface of the fixing ring.

[0012] As a preferred scheme of the utility model, the end of the two pressure rods close to the fixing ring is provided with a pressing block, and the surface of the upper piston rod and the lower piston rod is drilled with two pressing grooves, and the four pressing grooves are symmetrically arranged.

[0013] As a preferred scheme of the utility model, the diameter of the upper piston rod and the lower piston rod is same and smaller than the inner diameter of the fixing ring.

[0014] As a preferred scheme of the utility model, the end of the two pressure rods is drilled with a limiting hole, and the surface of the two pressure rods is chamfered, and the surface of the push block is provided with anti-skid lines.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. In the scheme, the clamping structure between the push block, the spring and the limiting block and the extension block allows the operator to quickly lock or unlock the two components by manually rotating the lower piston rod without using any special tools. This not only greatly simplifies the installation and maintenance process, but also is particularly suitable for use in space-limited or difficult-to-access working environments, thereby reducing maintenance costs and improving work efficiency.

[0017] 2. In the scheme, the design of the inner wall hollow groove and the sliding groove of the piston rod, combined with the use of the anti-skid lines on the surface of the push block and the fixing ring, provides an additional sealing layer for the piston rod. This design can effectively prevent the leakage of hydraulic oil or other working media under high pressure from the connection, ensuring the stable operation of the system, improving the safety and work accuracy of the system, and reducing resource waste and environmental pollution caused by leakage.

[0018] 3. In the scheme, the piston rod is designed as a hollow structure, and the diameters of the upper piston rod and the lower piston rod are ensured to be the same and smaller than the inner diameter of the fixing ring, which helps to reduce the weight of the entire piston assembly. Such design not only saves materials and reduces manufacturing costs, but more importantly, it can significantly improve the response speed and accuracy of the hydraulic or pneumatic system during rapid action, making the system more energy-efficient and meeting the demand of modern industry for high-performance execution components. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:

[0020] Figure 1 It is a perspective view of the present application;

[0021] Figure 2 It is a sectional perspective view of the upper piston rod and the lower piston rod of the present application;

[0022] Figure 3 It is a sectional perspective view of the upper piston rod of the present application;

[0023] Figure 4 It is a perspective view of the lower piston rod of the present application;

[0024] Figure 5 It is a side view of the present application.

[0025] In the drawings: 1, upper piston rod; 2, lower piston rod; 3, sliding groove; 4, push block; 5, spring; 6, limiting block; 7, extension block; 8, clamping groove; 9, fixed ring; 10, pressing rod; 11, pressing block; 12, pressing groove; 13, hollow groove. DETAILED DESCRIPTION

[0026] 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 a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] Embodiment 1

[0028] Please refer to Figures 1-5 The present application provides the following technical solutions:

[0029] A hollow piston rod with a toothed end structure comprises:

[0030] The upper piston rod 1 is provided with external threads at the top end, and the lower piston rod 2 at the end of the upper piston rod 1.

[0031] The inner wall of the upper piston rod 1 is provided with a hollow groove 13, the inner wall of the hollow groove 13 is fixedly connected with a spring 5, the end of the spring 5 is fixedly connected with a push block 4, the surface of the upper piston rod 1 is provided with a sliding groove 3, the sliding groove 3 is slidingly connected with the push block 4, and the push block 4 is slidingly connected to the inner wall of the hollow groove 13 and fixedly connected with the spring 5.

[0032] In the specific embodiment of the utility model,

[0033] By setting outer thread on the top end of the piston rod 1 and the lower piston rod 2 at the end, and opening the inner wall with the hollow groove 13, the piston rod not only has the characteristics of lightweight, but also provides internal space for accommodating the spring 5 and other connecting components, such as the push block 4. This design greatly reduces the amount of material used, reduces production costs, and at the same time reduces weight, improves the response speed of the system. In addition, the design of the sliding groove 3 and the push block 4 allows relative movement between components, ensuring that the system can self-adjust when subjected to alternating loads, avoiding stress concentration problems caused by fixed connections. Such a design provides a more flexible and durable connection for the piston rod, enhancing the stability and reliability of the overall structure, thereby improving the operating efficiency and safety of the hydraulic and pneumatic system.

[0034] For details, please refer to Figures 1-5 The inner wall of the hollow groove 13 is fixedly connected with two symmetrical limit blocks 6, and the top end of the lower piston rod 2 is fixedly connected with an extension block 7, and the width of the extension block 7 is less than the gap between the two symmetrical limit blocks 6.

[0035] In this embodiment: by fixing two symmetrical limit blocks 6 on the inner wall of the hollow groove 13, and fixing an extension block 7 with a width less than the gap between the two limit blocks on the top end of the lower piston rod 2, this design effectively prevents the lower piston rod 2 from shifting or disengaging during rotation. This feature greatly improves the accuracy and stability of the piston rod connection, especially when working in a high-pressure environment, it can effectively avoid connection loosening caused by external impact or vibration, ensuring long-term reliability. In addition, the combination of limit blocks 6 and extension blocks 7 simplifies the installation process, allowing quick assembly without the need for additional tools, reducing maintenance costs and increasing application flexibility.

[0036] For details, please refer to Figures 1-5 A clamping groove 8 is opened at the top end of the extension block 7, and the clamping groove 8 is movably connected with the push block 4.

[0037] In this embodiment: a clamping groove 8 is opened at the top end of the extension block 7, and is movably connected with the push block 4. This design creates a self-locking mechanism, when the extension block 7 is inserted into place, rotate to align the clamping groove 8 with the push block 4, at this time the restoring force of the spring 5 automatically pushes the push block 4 into the clamping groove 8, realizing automatic locking. This mechanism not only simplifies the operation process, but also ensures the safety and reliability of the connection. In actual application, even if unexpected situations such as vibration or impact occur, this self-locking structure can maintain good connection state and will not easily come loose. It also allows quick disassembly and reassembly, which is particularly important for hydraulic and pneumatic systems that need frequent maintenance or adjustment.

[0038] For details, please refer to Figures 1-5 The surface connection of the upper piston rod 1 and the lower piston rod 2 is sleeved with a fixed ring 9, and the surface of the fixed ring 9 is rotationally connected with two pressure rods 10.

[0039] In this embodiment, the fixed ring 9 is sleeved at the surface connection of the upper piston rod 1 and the lower piston rod 2, and the two pressure rods 10 are connected by rotation. This design further strengthens the connection strength between the two parts. The existence of the fixed ring 9 not only plays a physical protection role, but also improves the appearance quality. The design of the pressure rod 10 provides a simple and effective mechanical fastening means. By pressing the pressure rod 10 inward, the pressing block 11 on it is embedded in the pre-drilled pressure groove 12, achieving a double-locked effect. This not only improves the sealing performance of the connection part, but also reduces potential leakage points and enhances the integrity of the system due to the absence of additional fasteners. In addition, the limiting hole design at the end of the pressure rod 10 facilitates winding and fixing with a steel wire rope, providing additional safety protection and being suitable for various complex working environments.

[0040] For details, please refer to Figures 1-5 The end of each of the two pressure rods 10 close to the fixed ring 9 is provided with a pressing block 11, and the surface of each of the upper piston rod 1 and the lower piston rod 2 is drilled with two pressure grooves 12, and the four pressure grooves 12 are symmetrically arranged in pairs.

[0041] In this embodiment, the end of each of the two pressure rods 10 close to the fixed ring 9 is provided with a pressing block 11, and the surface of each of the upper piston rod 1 and the lower piston rod 2 is drilled with two pressure grooves 12, and the four pressure grooves 12 are symmetrically arranged in pairs.

[0042] For details, please refer to Figures 1-5 The diameters of the upper piston rod 1 and the lower piston rod 2 are the same and smaller than the inner diameter of the fixed ring 9.

[0043] In this embodiment, the upper piston rod 1 and the lower piston rod 2 have the same diameter, which is smaller than the inner diameter of the fixed ring 9. This size matching design ensures that the fixed ring 9 can be smoothly fitted on the piston rod, while providing enough space to accommodate additional components such as the pressure rod 10. This design optimizes the overall layout of the piston rod, avoiding unnecessary volume increase, which helps to maintain the compactness of the system. More importantly, the same diameter means that the various parts of the piston rod can use the same machining process during manufacturing, improving the standardization of production and reducing production costs. In addition, consistent diameter also helps to improve sealing performance, reduce the risk of medium leakage, and ensure efficient operation of hydraulic and pneumatic systems.

[0044] For details, please refer to Figures 1-5 The ends of the two pressure rods 10 are drilled with limiting holes, and the surfaces of the two pressure rods 10 are chamfered. The surface of the push block 4 is provided with anti-skid lines.

[0045] In this embodiment, the limiting hole design at the end of the pressure rod 10 allows the use of a steel wire or other similar device for fixation, ensuring that the pressure rod 10 will not accidentally come off under any circumstances, providing additional safety for the entire connection. The chamfering of the surface of the pressure rod 10 simplifies the installation process, making it more convenient to operate. At the same time, the anti-skid lines provided on the surface of the push block 4 increase the friction, preventing hand slipping during operation, improving safety and operational convenience. These details work together to not only improve user experience, but also enhance the competitiveness of the product in the market, embodying the application of humanized design concept.

[0046] Working principle and use process of the utility model:

[0047] The push block 4 is manually pushed to move towards the top end of the piston rod 1 to compress the spring 5, making space for the insertion of the lower piston rod 2. Then, the extension block 7 of the lower piston rod 2 is aligned with the gap between the two limiting blocks 6 and inserted to the bottom. Then, the lower piston rod 2 is rotated to form a preliminary clamping between the extension block 7 and the limiting block 6. The push block 4 is released and automatically pushed into the clamping groove 8 at the top of the extension block 7 under the action of the spring 5 to complete the final locking. Subsequently, the fixed ring 9 is fitted on the junction of the upper and lower piston rods, and the connecting pressure rod 10 is rotated onto the fixed ring 9. The pressure rod 10 is pressed inward, and the pressure block 11 is embedded into the pressure groove 12 on the piston rod. Finally, the steel wire is wound through the limiting holes on the surface of the pressure rod 10 for fixation, increasing safety. After installation is completed, all connection points are checked to ensure stability, and a function test is performed to confirm smooth movement and reliable connection.

[0048] Finally, it should be noted that: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A hollow piston rod with a threaded end, characterized in that Include: The upper piston rod (1), the top end of the upper piston rod (1) is provided with external thread, the end of the upper piston rod (1) is provided with lower piston rod (2); The inner wall of the upper piston rod (1) is hollowed out with a hollow groove (13), the inner wall of the hollow groove (13) is fixedly connected with a spring (5), the end of the spring (5) is fixedly connected with a push block (4), the surface of the upper piston rod (1) is hollowed out with a sliding groove (3), the sliding groove (3) is slidably connected with the push block (4), the push block (4) is slidably connected with the inner wall of the hollow groove (13) and is fixedly connected with the spring (5).

2. A hollow piston rod with a threaded end according to claim 1, characterized in that: The inner wall of the hollow groove (13) is fixedly connected with two symmetrical limit blocks (6), the top end of the lower piston rod (2) is fixedly connected with an extension block (7), the width of the extension block (7) is less than the gap between the two symmetrical limit blocks (6).

3. A hollow piston rod with a threaded end according to claim 2, characterized in that: The top end of the extension block (7) is hollowed out with a clamping groove (8), the clamping groove (8) is movably clamped with the push block (4).

4. A hollow piston rod with a threaded end according to claim 3, characterized in that: The surface of the fixed ring (9) is rotatably connected with two pressure rods (10).

5. A hollow piston rod with a threaded end according to claim 4, characterized in that: The end of the two pressure rods (10) close to the fixed ring (9) is provided with a pressing block (11), the surface of the upper piston rod (1) and the lower piston rod (2) is hollowed out with two pressing grooves (12), and the four pressing grooves (12) are symmetrically arranged respectively.

6. A hollow piston rod with a threaded end according to claim 5, characterized in that: The diameter of the upper piston rod (1) and the lower piston rod (2) is same, and is less than the inner diameter of the fixed ring (9).

7. A hollow piston rod with a threaded end according to claim 6, characterized in that: The end of the two pressure rods (10) is hollowed out with a limiting hole, and the surface of the two pressure rods (10) is chamfered, the surface of the push block (4) is provided with anti-skid lines.

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