Piston rod with stroke compensation function

Abstract

The piston rod comprises a rod body, sliding grooves are formed in the inner wall of the rod body at equal intervals, sliding blocks are connected into the sliding grooves in a sliding mode, moving blocks are fixedly connected among the multiple sliding blocks, one side of each moving block is rotationally connected with a threaded rod, and one end of each threaded rod extends to the outer side of the rod body and is rotationally connected with a contact block. The piston rod has the advantages that the stroke of the piston rod can be accurately compensated through the structural design of the threaded rod, the movable block and the like, the requirements for the stroke of the piston rod under different working conditions are met, and the universality and practicability of the piston rod are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems, in particular to a piston rod capable of stroke compensation. Background Art

[0002] In the modern industrial field, hydraulic systems are widely used in many industries such as engineering machinery, aerospace, automobile manufacturing, metallurgy and mining due to their powerful power transmission capabilities, precise motion control performance and good reliability.

[0003] However, in the prior art, the stroke of existing piston rods is often fixed at the beginning of the design, making it difficult to flexibly adjust according to actual work needs. Even some piston rods with certain adjustment functions are relatively crude and cannot meet the precise control requirements of small changes in stroke required for high-precision operations. Utility Model Content

[0004] In view of the aforementioned problems existing in the prior art, the primary purpose of this utility model is to provide a piston rod capable of stroke compensation. This solves the problem that the stroke of the piston rod in the prior art is often fixed from the beginning of the design, making it difficult to flexibly adjust it according to actual working requirements. Even some piston rods with some adjustment function have relatively crude adjustment methods and cannot meet the precise control requirements of small stroke changes required for high-precision operations.

[0005] The technical solution of the present utility model is as follows: a piston rod capable of stroke compensation comprises a rod body, the inner wall of the rod body is provided with sliding grooves at equal intervals, the interior of the sliding grooves are slidably connected with sliders, a plurality of the sliders are fixedly connected with moving blocks, one side of the moving block is rotatably connected to a threaded rod, one end of the threaded rod extends to the outside of the rod body and is rotatably connected to a contact block.

[0006] Through the above technical solution, through the design of structures such as the threaded rod and the moving block, the stroke of the piston rod can be accurately compensated to adapt to the requirements of the piston rod stroke under different working conditions, thereby improving the versatility and practicality of the piston rod.

[0007] As a preferred embodiment, a through hole is formed at one end of the rod body, and one end of the through hole extends to the interior of the rod body.

[0008] Through the above technical solution, the design of the through hole enables hydraulic oil to enter the interior of the rod body, providing a channel for possible internal lubrication or other hydraulic auxiliary operations, ensuring the smooth operation of the piston rod.

[0009] As a preferred embodiment, a sealing ring is fixedly connected to the interior of the rod body and located on one side of the sliding groove.

[0010] Through the above technical solution, the sealing ring effectively prevents hydraulic oil leakage, ensures the stable working pressure of the hydraulic system, and reduces system failures and maintenance costs caused by hydraulic oil leakage.

[0011] As a preferred embodiment, a hexagonal block is fixedly connected to the outside of the threaded rod and located on the outside of the rod body.

[0012] Through the above technical solution, the design of the hexagonal block is easy to operate, so that the operator can rotate the threaded rod conveniently and accurately, thereby improving the convenience of operation and work efficiency.

[0013] As a preferred embodiment, the contact block () is made of alloy steel with a quenched surface, and the inner wall of the through hole is provided with an anti-corrosion coating.

[0014] Through the above technical solution, the material and processing method of the contact block greatly improve its durability, reduce the frequency of equipment maintenance and replacement due to damage to the contact block, extend the service life of the piston rod, and ensure that the piston rod can stably connect with the external device and transmit force during operation.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] In the utility model, through the design of structures such as the threaded rod and the movable block, the stroke of the piston rod can be accurately compensated, adapting to the requirements of the piston rod stroke under different working conditions, and improving the versatility and practicality of the piston rod. The through-hole design allows the hydraulic oil to enter the inside of the rod body, providing a channel for possible internal lubrication or other hydraulic auxiliary operations, ensuring the smooth operation of the piston rod. The sealing ring effectively prevents hydraulic oil leakage, ensures the stability of the working pressure of the hydraulic system, and reduces system failures and maintenance costs caused by hydraulic oil leakage. The design of the hexagonal block is easy to operate, allowing the operator to rotate the threaded rod conveniently and accurately, improving the convenience of operation and work efficiency. The material and processing method of the contact block greatly improve its durability, reduce the frequency of equipment maintenance and replacement due to damage to the contact block, extend the service life of the piston rod, and ensure that the piston rod can stably connect with the external device and transmit force during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model provides a structural stereoscopic diagram of a piston rod capable of stroke compensation;

[0018] Figure 2 The utility model provides a schematic diagram of a cross-sectional three-dimensional structure of a piston rod capable of stroke compensation;

[0019] Figure 3The utility model provides a schematic diagram of the cross-sectional main structure of a piston rod capable of stroke compensation;

[0020] Figure 4 The utility model provides a bottom-view structural schematic diagram of a piston rod capable of stroke compensation.

[0021] Legend: 1. Rod body; 2. Slide groove; 3. Slider; 4. Moving block; 5. Threaded rod; 6. Hexagonal block; 7. Contact block; 8. Sealing ring; 9. Through hole. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Example

[0024] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the utility model provides a technical solution: it includes a rod body 1, the inner wall of the rod body 1 is equidistantly provided with sliding grooves 2, the interior of the sliding grooves 2 are slidably connected with sliders 3, and a plurality of sliders 3 are fixedly connected with moving blocks 4, one side of the moving block 4 is rotatably connected to a threaded rod 5, and one end of the threaded rod 5 extends to the outside of the rod body 1 and is rotatably connected to a contact block 7.

[0025] In this embodiment, the inner wall of the rod body 1 has equidistant grooves 2, within which sliders 3 slide. Multiple sliders 3 are fixedly connected to a moving block 4. When the threaded rod 5 is rotated, the rotational connection between the threaded rod 5 and the moving block 4 causes the moving block 4 to move axially along the threaded rod 5. The interaction between the sliders 3 and the grooves 2 allows the moving block 4 to move linearly along the inner wall of the rod body 1, thereby compensating for the piston rod's stroke. A contact block 7 is rotationally connected to the threaded rod 5 and can be used to connect to an external device to transmit the piston rod's motion.

[0026] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, a through hole 9 is opened at one end of the rod body 1 , and one end of the through hole 9 extends to the interior of the rod body 1 .

[0027] In this embodiment, the through hole 9 at one end of the rod body 1 extends into the interior of the rod body 1. When the hydraulic cylinder is operating, hydraulic oil can enter the interior of the rod body 1 through the through hole 9. When combined with the anti-corrosion coating on the inner wall of the through hole 9, the hydraulic oil will not corrode the inner wall of the through hole 9 when entering the interior of the rod body 1.

[0028] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, a sealing ring 8 is fixedly connected inside the rod body 1 and on one side of the sliding groove 2 .

[0029] In this embodiment, the sealing ring 8 is fixed inside the rod body 1 and is located on one side of the slide groove 2. When the slider 3 slides in the slide groove 2, the sealing ring 8 can prevent the hydraulic oil from leaking from the slide groove 2, thereby ensuring the sealing of the hydraulic system.

[0030] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, a hexagonal block 6 is fixedly connected to the outside of the threaded rod 5 and located on the outside of the rod body 1.

[0031] In this embodiment, the hexagonal block 6 is fixed on the outside of the threaded rod 5 and is located on the outside of the rod body 1. By using tools such as a hexagonal wrench in conjunction with the hexagonal block 6, the threaded rod 5 can be easily rotated to adjust the position of the moving block 4, thereby achieving stroke compensation operation.

[0032] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the contact block (7) is made of alloy steel with a quenched surface, and the inner wall of the through hole (9) is provided with an anti-corrosion coating.

[0033] In this embodiment, the contact block 7 is made of alloy steel and has a surface quenching treatment. The alloy steel itself has high strength and toughness, and the surface hardness is greatly increased after quenching. When the contact block 7 is connected to an external device and subjected to force, it can effectively resist wear and deformation.

[0034] Working principle:

[0035] like Figure 1 、 Figure 2 、 Figure 3 As shown, there are equidistant grooves 2 on the inner wall of the rod body 1, and the sliders 3 can slide in the grooves 2. Multiple sliders 3 are fixedly connected to the moving block 4. When the threaded rod 5 is rotated, since the threaded rod 5 and the moving block 4 are rotationally connected, the moving block 4 will be pushed to move along the axial direction of the threaded rod 5 during the rotation of the threaded rod 5. The moving block 4 realizes linear movement along the inner wall of the rod body 1 through the cooperation of the sliders 3 and the grooves 2, thereby realizing stroke compensation of the piston rod. The contact block 7 is rotationally connected to the threaded rod 5 and can be used to connect an external device to transmit the movement of the piston rod. The through hole 9 at one end of the rod body 1 extends to the inside of the rod body 1. When the hydraulic cylinder is working, the hydraulic oil can enter the inside of the rod body 1 through the through hole 9. When combined with the anti-corrosion coating on the inner wall of the through hole 9, the hydraulic oil will not corrode the inner wall of the through hole 9 when entering the inside of the rod body 1;

[0036] Sealing ring 8 is fixed inside rod body 1 and located on one side of chute 2. When slider 3 slides within chute 2, sealing ring 8 prevents hydraulic oil from leaking from chute 2, ensuring the hydraulic system's tightness. Hexagonal block 6 is fixed to the outside of threaded rod 5 and located outside rod body 1. Using a tool such as a hexagonal wrench in conjunction with hexagonal block 6, threaded rod 5 can be easily rotated to adjust the position of movable block 4, thereby achieving stroke compensation. Contact block 7 is made of alloy steel with a quenched surface. Alloy steel itself has high strength and toughness, and quenching significantly increases its surface hardness. When contact block 7 is connected to an external device and subjected to force, it can effectively resist wear and deformation.

[0037] Finally, it should be noted that the embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A piston rod capable of stroke compensation, comprising a rod body (1), characterized in that: The inner wall of the rod body (1) is provided with sliding grooves (2) at equal intervals, and the interiors of the sliding grooves (2) are all slidably connected to sliders (3), and a plurality of sliders (3) are fixedly connected to moving blocks (4), and one side of the moving block (4) is rotatably connected to a threaded rod (5), and one end of the threaded rod (5) extends to the outside of the rod body (1) and is rotatably connected to a contact block (7).

2. The stroke-compensated piston rod according to claim 1, characterized in that: A through hole (9) is provided at one end of the rod body (1), and one end of the through hole (9) extends to the interior of the rod body (1).

3. The stroke-compensated piston rod according to claim 1, characterized in that: A sealing ring (8) is fixedly connected inside the rod body (1) and on one side of the slide groove (2).

4. The stroke-compensated piston rod according to claim 1, characterized in that: A hexagonal block (6) is fixedly connected to the outside of the threaded rod (5) and located on the outside of the rod body (1).

5. The stroke-compensated piston rod according to claim 2, characterized in that: The contact block (7) is made of alloy steel with a surface that has been quenched, and the inner wall of the through hole (9) is provided with an anti-corrosion coating.

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