A double shaft oil cylinder

Abstract

The utility model relates to double axle oil cylinder technical field, and disclose a kind of double axle oil cylinder, including cylinder body, and the cylinder body surface is provided with heat dissipation cleaning mechanism. The fin is fixed on the surface of cylinder body in circular array, increases the heat dissipation area, can quickly dissipate the heat generated by oil cylinder work, reduce oil cylinder temperature, guarantee its normal working performance, simultaneously, through the cleaning structure of sliding ring, poking board, connecting plate and other components, cooperate with fixed plate, fixed frame, guide rod, slide, spring, inclined surface insert block and other assemblies, the left and right sliding of sliding ring on the surface of fin can be realized, and then the dust and other impurities on the surface of fin are cleaned, avoid dust accumulation to influence the heat dissipation effect, further improve the heat dissipation efficiency of oil cylinder, by pulling the pull plate to drive slide and slide plate to move upwards, make inclined surface insert block separate from the slot of connecting plate, at this moment, connecting plate and poking board can be conveniently moved, and then drive sliding ring to slide and clean.

Description

Technical Field

[0001] This utility model relates to the field of dual-axis hydraulic cylinder technology, specifically a dual-axis hydraulic cylinder. Background Technology

[0002] Dual-axis hydraulic cylinders, as crucial hydraulic actuators, play an indispensable role in modern industry. They are widely used in numerous sectors, including construction machinery, metallurgical equipment, automated production lines, and aerospace, enabling linear reciprocating motion or oscillation, providing powerful power output and precise motion control for various mechanical equipment. For example, in excavators, dual-axis cylinders control the opening and closing of the bucket and the raising and lowering of the boom; in rolling mills, they participate in the steel rolling process, ensuring the stable application of rolling force and the precise shaping of the steel. Their performance directly affects the overall operating efficiency, reliability, and product quality of the equipment; therefore, continuously improving the performance and technological level of dual-axis hydraulic cylinders is of significant practical importance.

[0003] During operation, a dual-axis hydraulic cylinder generates a significant amount of heat due to the flow friction of the hydraulic oil, the friction between the piston and the cylinder body, and the load. If this heat cannot be dissipated in time, the internal temperature of the cylinder will rise. High temperatures reduce the viscosity of the hydraulic oil, decreasing its lubrication performance, thereby increasing friction and wear between components, reducing the cylinder's efficiency and lifespan. Furthermore, high temperatures can cause the hydraulic oil to oxidize and deteriorate, producing deposits and gum that can clog the hydraulic system's pipes and valves, affecting the system's normal operation. Utility Model Content

[0004] The purpose of this invention is to provide a dual-shaft hydraulic cylinder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-axis hydraulic cylinder, including a cylinder body, a first connecting oil pipe fixedly connected to the left side of the front of the cylinder body, a second connecting oil pipe fixedly connected to the right side of the front of the cylinder body, a piston slidably connected to the inner wall of the cylinder body, sealing grooves being formed on the left and right sides of the piston surface, sealing rings being fitted into the two sealing grooves, piston rods being symmetrically fixedly connected to the left and right sides of the piston, sealing elements being provided on the left and right sides of the cylinder body, and a heat dissipation and cleaning mechanism being provided on the surface of the cylinder body;

[0006] The heat dissipation and cleaning mechanism includes heat sinks, which are fixedly connected to the cylinder surface in a circular array. A sliding ring is slidably connected to the cylinder surface from left to right. A toggle plate is fixedly connected to the outer wall of the sliding ring. A connecting plate is fixedly connected to the left side of the toggle plate. A fixing plate is fixedly connected to the top left side of the cylinder. A fixing frame is fixedly connected to the top of the fixing plate. Guide rods are symmetrically fixedly connected to the top of the fixing plate from front to back. A sliding plate is slidably connected to the surfaces of the two guide rods from top to bottom. A spring is sleeved between the top of the inner wall of the fixing frame and the sliding plate on the surfaces of the two guide rods. A sliding rod is fixedly connected to the top of the sliding plate. A pull plate is fixedly connected to the top of the sliding rod. An inclined insert is fixedly connected to the bottom of the sliding plate. A slot corresponding to the inclined insert is opened on the left side of the bottom of the connecting plate. Connecting rods are symmetrically fixedly connected to the bottom of the connecting plate from front to back and left to right.

[0007] Preferably, the cylinder body has holes on the left and right sides that match the outer wall of the seal, and the outer wall of the seal passes through and is fixedly connected to the hole, and the piston rod surface slides left and right to the inner wall of the seal.

[0008] Preferably, the sliding ring has grooves on its left and right sides that match the heat sink, and the sliding ring slides left and right on the surface of the heat sink through the grooves.

[0009] Preferably, the top end of the guide rod is fixedly connected to the top of the inner wall of the fixing frame, one end of the spring is fixedly connected to the top of the inner wall of the fixing frame, and the other end of the spring is fixedly connected to the top of the skateboard.

[0010] Preferably, the top of the fixing frame has a hole that matches the slide rod, and the slide rod surface passes through and slides up and down in the hole.

[0011] Preferably, the left side of the connecting plate is sloping and corresponds to the bottom of the sloping insert, which facilitates the left side of the connecting plate to press the sloping insert and move the sloping insert upward.

[0012] Preferably, the bottom end of the connecting rod contacts the top of the fixed plate, creating a certain gap between the fixed plate and the sliding plate, which facilitates the connecting plate moving to the left and entering between the fixed plate and the connecting plate.

[0013] Compared with the prior art, the present invention provides a dual-shaft hydraulic cylinder, which has the following beneficial effects:

[0014] 1. This dual-axis hydraulic cylinder features a circular array of heat sinks fixed to the cylinder body surface, increasing the heat dissipation area and enabling rapid dissipation of heat generated during cylinder operation. This reduces the cylinder temperature and ensures normal operating performance. Simultaneously, a cleaning structure composed of a sliding ring, actuating plate, and connecting plate, along with components such as a fixed plate, fixing frame, guide rod, sliding plate, spring, and inclined insert, allows the sliding ring to slide left and right on the heat sink surface. This cleans dust and other impurities from the heat sink surface, preventing dust accumulation from affecting heat dissipation and further improving the cylinder's cooling efficiency. Pulling the pull plate moves the sliding rod and sliding plate upwards, disengaging the inclined insert from the slot of the connecting plate. This allows for easy movement of the connecting plate and actuating plate, further driving the sliding ring to perform the cleaning operation.

[0015] 2. This dual-shaft hydraulic cylinder employs a comprehensive sealing design. From the tight fit between the cylinder body and the seals to the precise installation of the sealing ring at the piston, a robust defense is constructed, eliminating the possibility of oil leakage. This not only ensures the stable operation of the hydraulic cylinder under various working conditions but also greatly reduces component wear and failures caused by oil leakage, significantly extending the service life of the hydraulic cylinder and saving users the cost and time of frequent equipment replacement. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional schematic diagram of the cylinder body and piston rod of this utility model;

[0018] Figure 2 This is a three-dimensional sectional view of the front of the cylinder block of this utility model.

[0019] Figure 3 This is a three-dimensional schematic diagram of the sealing groove and sealing ring of this utility model;

[0020] Figure 4 This is a three-dimensional schematic diagram of the heat sink and sliding ring of this utility model.

[0021] Figure 5 This is a three-dimensional schematic diagram of the structural fixing plate and fixing frame of this utility model;

[0022] Figure 6 This is a three-dimensional schematic diagram of the connecting plate and slot of this utility model;

[0023] Figure 7 This is a three-dimensional schematic diagram of the guide rod and inclined insert block of this utility model.

[0024] In the diagram: 1. Cylinder block; 11. First connecting oil pipe; 12. Second connecting oil pipe; 13. Piston; 14. Sealing groove; 15. Sealing ring; 16. Piston rod; 17. Seal; 2. Heat dissipation and cleaning mechanism; 21. Heat sink; 22. Sliding ring; 23. Actuating plate; 24. Connecting plate; 25. Fixing plate; 26. Fixing bracket; 27. Guide rod; 28. Slide plate; 29. ​​Spring; 211. Slide rod; 212. Pull plate; 213. Inclined insert block; 214. Slot; 215. Connecting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] This utility model provides the following technical solution:

[0028] Example 1

[0029] Please see Figure 1-7 This utility model provides a technical solution: a dual-shaft hydraulic cylinder, including a cylinder body 1, a first connecting oil pipe 11 fixedly connected to the left side of the front of the cylinder body 1, a second connecting oil pipe 12 fixedly connected to the right side of the front of the cylinder body 1, a piston 13 slidably connected to the inner wall of the cylinder body 1, sealing grooves 14 are opened on the surface of the piston 13 on the left and right sides, sealing rings 15 are sleeved in the two sealing grooves 14, piston rods 16 are symmetrically fixedly connected to the left and right sides of the piston 13, sealing elements 17 are provided on the left and right sides of the cylinder body 1, and a heat dissipation and cleaning mechanism 2 is provided on the surface of the cylinder body 1;

[0030] The heat dissipation cleaning mechanism 2 includes heat sinks 21, which are fixedly connected to the surface of the cylinder 1 in a circular array. A sliding ring 22 is slidably connected to the surface of the cylinder 1. A toggle plate 23 is fixedly connected to the outer wall of the sliding ring 22. A connecting plate 24 is fixedly connected to the left side of the toggle plate 23. A fixing plate 25 is fixedly connected to the top left side of the cylinder 1. A fixing frame 26 is fixedly connected to the top of the fixing plate 25. Guide rods 27 are symmetrically fixedly connected to the top of the fixing plate 25. A sliding plate 28 is slidably connected to the surfaces of the two guide rods 27. A spring 29 is sleeved between the top of the inner wall of the fixing frame 26 and the sliding plate 28. A sliding rod 211 is fixedly connected to the top of the sliding rod 211. A pull plate 212 is fixedly connected to the top of the sliding plate 28. An inclined insert block 213 is fixedly connected to the bottom of the sliding plate 28. A slot 214 corresponding to the inclined insert block 213 is opened on the bottom left side of the connecting plate 24. A connecting rod 215 is symmetrically fixedly connected to the bottom of the connecting plate 24.

[0031] The cylinder body has holes on the left and right sides that match the outer wall of the seal 17, and the outer wall of the seal 17 passes through and is fixedly connected to the hole. The surface of the piston rod 16 slides left and right to connect to the inner wall of the seal 17.

[0032] The sliding ring 22 has grooves on its left and right sides that match the heat sink 21, and the sliding ring 22 slides left and right on the surface of the heat sink 21 through the grooves.

[0033] The top end of the guide rod 27 is fixedly connected to the top of the inner wall of the fixing frame 26, one end of the spring 29 is fixedly connected to the top of the inner wall of the fixing frame 26, and the other end of the spring 29 is fixedly connected to the top of the slide plate 28.

[0034] The top of the fixing bracket 26 has a hole that matches the slide rod 211, and the slide rod 211 is connected to the hole by sliding up and down through the surface of the slide rod 211.

[0035] The left side of the connecting plate 24 is sloping and corresponds to the bottom of the sloping insert 213, which facilitates the left side of the connecting plate 24 to press the sloping insert 213 upward.

[0036] The bottom end of the connecting rod 215 contacts the top of the fixed plate 25, creating a gap between the fixed plate 25 and the sliding plate 28, which facilitates the connecting plate 24 to move to the left and enter between the fixed plate 25 and the connecting plate 28.

[0037] In actual operation, when this device is in use, when the external hydraulic system injects hydraulic oil into the left chamber of the cylinder 1 through the first connecting oil pipe 11, the hydraulic oil pressure in the left chamber increases, generating a rightward thrust on the left side of the piston. At the same time, the right chamber of the cylinder 1 is connected to the external return oil line through the second connecting oil pipe 12, and the hydraulic oil in the right chamber can be smoothly discharged, and the pressure decreases. Under the pressure difference between the left and right chambers, the piston slides to the right along the inner wall of the cylinder 1, thereby driving the piston rods 16, which are symmetrically fixed on the left and right sides, to extend synchronously. During this process, the sealing rings 15 in the sealing grooves 14 on the piston surface tightly fit the inner wall of the cylinder 1, preventing the hydraulic oil in the left and right chambers from flowing back and forth. The seals 17 on the left and right sides of the cylinder 1 slide and cooperate with the surface of the piston rods 16, ensuring that the piston rods 16 move smoothly and preventing the hydraulic oil inside the cylinder 1 from leaking from the gap between the piston rods 16 and the cylinder 1. When the hydraulic system switches the oil circuit and injects hydraulic oil into the right chamber of the cylinder 1 through the second connecting oil pipe 12, the pressure in the right chamber increases, generating a leftward thrust on the right side of the piston. The left chamber returns oil through the first connecting oil pipe 11, and the pressure decreases. Under the action of the reverse pressure difference, the piston slides to the left along the inner wall of the cylinder 1, driving the piston rods 16 to retract synchronously, completing one reciprocating cycle.

[0038] When the cylinder is working, the hydraulic oil flows at high speed and generates frictional heat due to compression within the cylinder body 1, as well as frictional heat between the piston and cylinder wall, and between the piston rod 16 and seal 17. This causes the temperature of the cylinder body 1 to rise. Since the heat sink 21 is fixed to the surface of the cylinder body 1 in a circular array, it greatly increases the contact area between the cylinder body 1 and the air. The heat inside the cylinder body 1 can be quickly conducted to the heat sink 21, and then dissipated to the surrounding environment through heat exchange between the heat sink 21 and the air, thereby continuously reducing the temperature of the cylinder body 1 and preventing the hydraulic oil from decreasing in viscosity due to high temperature and the seal 17 from aging and failing due to high temperature. When dust, oil, or other impurities accumulate on the surface of the heat sink 21, affecting the heat dissipation efficiency, they can be cleaned by the sliding ring 22. Since the sliding ring 22 has grooves on both sides that match the heat sink 21, pushing the toggle plate 23 will cause the sliding ring 22 to slide left and right along the surface of the heat sink 21. The groove wall of the sliding ring 22 will scrape the surface of the heat sink 21. Impurities are removed quickly. After cleaning, the position of the sliding ring 22 can be fixed by the positioning component on the fixed plate 25. When the connecting plate 24 is pushed to the left, the inclined surface on the left side of the connecting plate 24 contacts the bottom of the inclined plate 213. As the connecting plate 24 continues to move to the left, the inclined surface will squeeze the inclined plate 213, causing the inclined plate 213 to drive the slide plate 28 to slide upward along the guide rod 27. At the same time, the spring 29 is compressed. When the slot 214 at the bottom of the connecting plate 24 moves to directly below the inclined plate 213, the elastic restoring force of the spring 29 pushes the slide plate 28 downward, so that the inclined plate 213 is inserted into the slot 214, completing the positioning of the connecting plate 24 and fixing the sliding ring 22 to prevent it from sliding randomly when the cylinder is working. If the sliding ring 22 needs to be moved again, pull the pull plate 212 upward, and the slide plate 28 will be moved upward through the slide rod 211, so that the inclined plate 213 is disengaged from the slot 214, and the positioning can be released.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A dual-shaft hydraulic cylinder, comprising a cylinder body (1), characterized in that: The cylinder body (1) is fixedly connected to the left side of the front side with a first connecting oil pipe (11), and the cylinder body (1) is fixedly connected to the right side of the front side with a second connecting oil pipe (12). The cylinder body (1) is slidably connected to the inner wall of the cylinder body (1) with a piston (13). The piston (13) has sealing grooves (14) on the left and right sides. A sealing ring (15) is fitted inside the two sealing grooves (14). The piston rod (16) is fixedly connected to the left and right sides of the piston (13). The cylinder body (1) is provided with sealing elements (17) on the left and right sides. The cylinder body (1) is provided with a heat dissipation and cleaning mechanism (2). The heat dissipation cleaning mechanism (2) includes heat sinks (21), which are fixedly connected to the surface of the cylinder (1) in a circular array. A sliding ring (22) is slidably connected to the surface of the cylinder (1) from left to right. A toggle plate (23) is fixedly connected to the outer wall of the sliding ring (22). A connecting plate (24) is fixedly connected to the left side of the toggle plate (23). A fixing plate (25) is fixedly connected to the top left side of the cylinder (1). A fixing bracket (26) is fixedly connected to the top of the fixing plate (25). Guide rods (27) are symmetrically fixedly connected to the top of the fixing plate (25). The two guide rods (27) 27) A sliding plate (28) is connected to the surface of the slide. A spring (29) is sleeved between the top of the inner wall of the fixed frame (26) and the sliding plate (28) on the surface of the two guide rods (27). A sliding rod (211) is fixedly connected to the top of the sliding plate (28). A pull plate (212) is fixedly connected to the top of the sliding rod (211). A sloped insert (213) is fixedly connected to the bottom of the sliding plate (28). A slot (214) corresponding to the sloped insert (213) is opened on the left side of the bottom of the connecting plate (24). A connecting rod (215) is fixedly connected symmetrically to the bottom of the connecting plate (24).

2. A dual-shaft hydraulic cylinder according to claim 1, characterized in that: The cylinder body has holes on the left and right sides that match the outer wall of the seal (17), and the outer wall of the seal (17) is penetrated and fixedly connected to the hole. The piston rod (16) is slidably connected to the inner wall of the seal (17) on the left and right sides.

3. A dual-shaft hydraulic cylinder according to claim 1, characterized in that: The sliding ring (22) has grooves on its left and right sides that match the heat sink (21), and the sliding ring (22) slides left and right on the surface of the heat sink (21) through the grooves.

4. A dual-shaft hydraulic cylinder according to claim 1, characterized in that: The top end of the guide rod (27) is fixedly connected to the top of the inner wall of the fixing frame (26), one end of the spring (29) is fixedly connected to the top of the inner wall of the fixing frame (26), and the other end of the spring (29) is fixedly connected to the top of the slide plate (28).

5. A dual-shaft hydraulic cylinder according to claim 1, characterized in that: The top of the fixing frame (26) is provided with a hole that matches the slide rod (211), and the surface of the slide rod (211) is penetrated and slidably connected to the hole.

6. A dual-shaft hydraulic cylinder according to claim 1, characterized in that: The left side of the connecting plate (24) is sloping and corresponds to the bottom of the sloping insert (213).

7. A dual-shaft hydraulic cylinder according to claim 1, characterized in that: The bottom end of the connecting rod (215) contacts the top of the fixing plate (25), so that there is a certain gap between the fixing plate (25) and the sliding plate (28).

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