Stroke-adjustable water-cooled oil cylinder

Abstract

The stroke-adjustable water-cooled oil cylinder comprises an oil cylinder body, a front end cover and a rear end cover are fixedly arranged at the two ends of the oil cylinder body respectively, a piston rod is arranged in the front end cover in a sliding mode, and a sealing assembly is arranged between the piston rod and the oil cylinder body and located in the front end cover. An adjusting assembly is arranged in the rear end cover and comprises an adjusting nut, the inner wall of the adjusting nut is rotationally installed on the outer wall of the rear end cover, an adjusting rod is in threaded connection with the interior of the adjusting nut, an adjusting plate is arranged at one end of the adjusting rod, and a piston plate is arranged on one side of the adjusting plate. One end of the piston plate is fixedly connected to one end of the piston rod, a protruding block is fixedly connected to the outer wall of the adjusting nut, an oil outlet is formed in the adjusting rod, and one end of the adjusting rod is rotationally connected to the interior of the oil cylinder body. The stroke of the piston rod in the oil cylinder can be adjusted according to requirements, and the gap between the oil cylinder and the piston rod can be sealed.

Description

Technical Field

[0001] This utility model relates to the field of water-cooled oil cylinder technology, and in particular to an adjustable stroke water-cooled oil cylinder. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, a speed reduction device can be eliminated, and there is no transmission backlash, resulting in smooth movement. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] Existing water-cooled hydraulic cylinders have some shortcomings in use. Currently, the piston rod stroke of common hydraulic cylinders on the market is basically fixed. When different strokes are required, the corresponding hydraulic cylinder needs to be replaced to meet the requirements. Replacing the hydraulic cylinder is not only troublesome to operate, but also time-consuming and laborious, which reduces the applicability of the hydraulic cylinder and cannot meet the requirements of adjusting the piston rod stroke. In order to address the above problems, an adjustable stroke water-cooled hydraulic cylinder is proposed for improvement and upgrading. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable stroke water-cooled oil cylinder to solve the problems mentioned in the background art.

[0005] To solve the above problems, the following technical solution is provided: an adjustable stroke water-cooled cylinder, including a cylinder body, with a front end cover and a rear end cover fixedly installed at both ends of the cylinder body, a piston rod slidably installed inside the front end cover, a sealing assembly installed between the piston rod and the cylinder body inside the front end cover, an adjustment assembly installed inside the rear end cover, the adjustment assembly including an adjustment nut, the inner wall of the adjustment nut being rotatably mounted on the outer wall of the rear end cover, an adjustment rod being threadedly connected inside the adjustment nut, an adjustment plate being installed at one end of the adjustment rod, a piston plate being installed on one side of the adjustment plate, and one end of the piston plate being fixedly connected to one end of the piston rod.

[0006] As a preferred embodiment of the above technical solution, the outer wall of the adjusting nut is fixedly connected with a protrusion, the adjusting rod has an oil outlet inside, and one end of the adjusting rod is rotatably connected to the inside of the cylinder body.

[0007] As a preferred embodiment of the above technical solution, a limiting groove is formed inside the cylinder body, and the adjusting plate and piston plate are slidably connected inside the limiting groove. One end of the adjusting rod is fixedly connected to the adjusting plate, and the piston plate and adjusting plate are adapted to the size of the limiting groove.

[0008] As a preferred embodiment of the above technical solution, the sealing assembly includes a guide sealing cover, the outer wall of the front cover is provided with an installation groove, the inner wall of the guide sealing cover is threadedly connected to the inside of the installation groove, and the outer wall of the piston rod passes through the inside of the guide sealing cover.

[0009] As a preferred embodiment of the above technical solution, the front end cover has a placement groove at one end of the cylinder body, a sealing ring is fixedly installed inside the placement groove, a dustproof ring is installed outside the sealing ring, the inner wall of the guide sealing cover is fixedly connected to the dustproof ring, and the sealing ring is made of a double lip structure.

[0010] As a preferred embodiment of the above technical solution, an oil injection hole is provided at the upper end of the cylinder body, and an inlet pipe and an outlet pipe are respectively provided on the outer wall of the cylinder body.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The device of this utility model is equipped with components such as adjusting nut, adjusting rod, adjusting plate, piston plate, and piston rod. By rotating the adjusting nut, the adjusting rod is driven to press the adjusting plate, which causes the adjusting plate to drive the piston rod on the piston plate to adjust the stroke. There is no need to replace the oil cylinder with different strokes, saving adjustment time and improving the applicability of the oil cylinder.

[0013] 2. The device of this utility model is equipped with components such as a guide sealing cover, a dustproof ring, and a sealing ring. The guide sealing cover drives the dustproof ring to squeeze the sealing ring and fix it, which facilitates the sealing of the gap between the oil cylinder and the piston rod during movement. This avoids problems such as hydraulic oil leakage caused by excessive gap when the piston rod moves, and improves the sealing effect of the water-cooled cylinder.

[0014] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of an adjustable stroke water-cooled oil cylinder according to the present invention;

[0017] Figure 2 This is a schematic diagram of the front structure of an adjustable stroke water-cooled oil cylinder according to the present invention;

[0018] Figure 3 for Figure 1 Schematic diagram of local adjustment structure;

[0019] Figure 4 for Figure 3 Schematic diagram of the localized explosion structure;

[0020] Figure 5 This is a schematic diagram of the partial disassembly structure shown in the figure.

[0021] In the diagram: 1. Cylinder body; 2. Piston rod; 3. Front end cover; 4. Rear end cover; 5. Adjustment assembly; 51. Adjusting nut; 52. Protrusion; 53. Adjusting rod; 54. Adjusting plate; 55. Piston plate; 56. Limiting groove; 6. Sealing assembly; 61. Guide sealing cover; 62. Dustproof ring; 63. Sealing ring; 64. Mounting groove; 65. Placement groove; 7. Water inlet pipe; 8. Oil filling hole. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 5 As shown, this embodiment provides a design for an adjustable stroke water-cooled cylinder, including a cylinder body 1. A front end cover 3 and a rear end cover 4 are fixedly installed at both ends of the cylinder body 1, respectively. A piston rod 2 is slidably installed inside the front end cover 3. A sealing component 6 is installed between the piston rod 2 and the cylinder body 1 inside the front end cover 3. An adjustment component 5 is installed inside the rear end cover 4. The adjustment component 5 includes an adjustment nut 51. The inner wall of the adjustment nut 51 is rotatably installed on the outer wall of the rear end cover 4. An adjustment rod 53 is threadedly connected inside the adjustment nut 51, and an adjustment plate 54 is installed at one end of the adjustment rod 53. A piston plate 55 is installed on one side of the adjustment plate 54, and one end of the piston plate 55 is fixedly connected to one end of the piston rod 2.

[0024] like Figures 3 to 4 As shown, a protrusion 52 is fixedly connected to the outer wall of the adjusting nut 51, and an oil outlet is opened inside the adjusting rod 53. One end of the adjusting rod 53 is rotatably connected to the inside of the cylinder body 1. A limit groove 56 is opened inside the cylinder body 1. The adjusting plate 54 and the piston plate 55 are slidably connected inside the limit groove 56. One end of the adjusting rod 53 is fixedly connected to the adjusting plate 54, and the piston plate 55 and the adjusting plate 54 are adapted to the size of the limit groove 56.

[0025] By rotating the protrusion 52 on the rear cover 4, the adjusting rod 53 inside the adjusting nut 51 is rotated, causing the adjusting rod 53 to move into the oil cylinder. At the same time, the adjusting plate 54 is pressed and moved, causing the adjusting plate 54 to move the piston plate 55 along the front end of the oil cylinder. This causes the piston rod 2 to move and adjust its stroke, so that the piston rod 2 can be adjusted without changing the oil cylinder with different strokes. The adjusting plate 54 and the piston plate 55 are adapted to the limiting groove 56 in the oil cylinder, and the adjusting plate 54 and the piston plate 55 are the same size. Through mutual pressing force, the piston rod 2 is driven to adjust its stroke along the front cover 3. The piston plate 55 and the adjusting plate 54 are both cylindrical in shape.

[0026] like Figure 5 As shown, the sealing assembly 6 includes a guide sealing cover 61, an installation groove 64 is provided on the outer wall of the front cover 3, the inner wall of the guide sealing cover 61 is threaded into the installation groove 64, the outer wall of the piston rod 2 passes through the inside of the guide sealing cover 61, a placement groove 65 is provided at one end of the cylinder body 1 inside the front cover 3, a sealing ring 63 is fixedly installed inside the placement groove 65, a dustproof ring 62 is provided on the outer side of the sealing ring 63, the inner wall of the guide sealing cover 61 and the dustproof ring 62 are fixedly connected, the sealing ring 63 is made of a double lip structure, an oil injection hole 8 is provided at the upper end of the cylinder body 1, and a water inlet pipe 7 and a water outlet pipe are respectively provided on the outer wall of the cylinder body 1.

[0027] A sealing ring 63 is placed in the groove 65 inside the front cover 3, and a dustproof ring 62 is placed inside the guide sealing cover 61 to prevent dust or impurities from entering the cylinder and causing contamination. Finally, the guide sealing cover 61 squeezes the sealing ring 63 to seal the gap between the cylinder and the piston rod 2 during movement, avoiding problems such as hydraulic oil leakage caused by excessive gap when the piston rod 2 moves. At the same time, the guide sealing cover 61 serves to support the piston rod 2 and reduce friction between the piston rod 2 and the front cover 3. The sealing ring 63 adopts a Glyd ring double lip structure, which can effectively prevent hydraulic oil from leaking from the gap between the piston rod 2 and the front cover 3, and can also withstand a certain lateral force. When the cylinder is overheated, the heated coolant in the inlet pipe 7 is used to cool the cylinder evenly and fully along the internal threaded water pipe, which facilitates the cooling of the cylinder and finally flows out from the outlet pipe.

[0028] The working principle and process of this utility model are as follows: When using the water-cooled hydraulic cylinder, firstly, according to the actual stroke requirements, the operator rotates the protrusion 52 on the rear end cover 4, which drives the adjusting rod 53 inside the adjusting nut 51 to rotate, causing the adjusting rod 53 to move into the hydraulic cylinder. At the same time, it squeezes the adjusting plate 54 to move, causing the adjusting plate 54 to drive the piston plate 55 to move along the front end of the hydraulic cylinder, thereby adjusting the stroke of the piston rod 2. This eliminates the need to change hydraulic cylinders with different strokes to adjust the stroke of the piston rod 2, saving time. When the piston rod 2 moves in the hydraulic cylinder, a sealing ring 63 is placed in the groove 65 inside the front end cover 3, and a dustproof ring 62 is placed in the guide sealing cover 61 to prevent dust or impurities from entering the hydraulic cylinder and causing contamination. Finally, the guide sealing cover 61 squeezes the sealing ring 63 to seal the gap between the hydraulic cylinder and the piston rod 2 during movement, avoiding problems such as hydraulic oil leakage caused by excessive gap when the piston rod 2 moves, thus improving the sealing effect of the water-cooled cylinder.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral 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; it can be a connection within 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.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. An adjustable stroke water-cooled cylinder, characterized by, Including the oil cylinder body (1), the oil cylinder body (1) both ends are respectively fixedly provided with front end cover (3) and rear end cover (4), the front end cover (3) inside slidingly provided with piston rod (2), the piston rod (2) and oil cylinder body (1) between the inside of front end cover (3) are provided with sealing assembly (6), the rear end cover (4) inside is provided with adjusting assembly (5), the adjusting assembly (5) includes adjusting nut (51), the adjusting nut (51) inner wall is rotatably installed on the outer wall of rear end cover (4), the adjusting nut (51) inside is threadedly connected with adjusting rod (53) and the one end of adjusting rod (53) is provided with adjusting plate (54), the one side of adjusting plate (54) is provided with piston plate (55), the one end of piston plate (55) is fixedly connected on the one end of piston rod (2).

2. A stroke-adjustable water-cooled oil cylinder according to claim 1, characterized in that The outer wall of the adjusting nut (51) is fixedly connected with the lug (52), the adjusting rod (53) is internally provided with an oil outlet, and one end of the adjusting rod (53) is rotatably connected inside the oil cylinder body (1).

3. A stroke-adjustable water-cooled oil cylinder according to claim 2, wherein The oil cylinder body (1) is internally provided with a limiting groove (56), the adjusting plate (54) and the piston plate (55) are both slidingly connected inside the limiting groove (56), the one end of the adjusting rod (53) is fixedly connected with the adjusting plate (54), and the piston plate (55) and the adjusting plate (54) are adapted to the size of the limiting groove (56).

4. The stroke-adjustable water-cooled oil cylinder according to claim 1, wherein The sealing assembly (6) includes a guide sealing cover (61), the outer wall of the front end cover (3) is provided with a mounting groove (64), the inner wall of the guide sealing cover (61) is threadedly connected inside the mounting groove (64), and the outer wall of the piston rod (2) penetrates inside the guide sealing cover (61).

5. A stroke-adjustable water-cooled oil cylinder according to claim 4, wherein The inside of the front end cover (3) is provided with a placing groove (65) at one end of the oil cylinder body (1), the sealing ring (63) is fixedly arranged inside the placing groove (65), the dustproof ring (62) is arranged on the outer side of the sealing ring (63), the inner wall of the guide sealing cover (61) is fixedly connected with the dustproof ring (62), and the sealing ring (63) is made of a double-lip structure.

6. The stroke-adjustable water-cooled cylinder according to claim 1, wherein The upper end of the oil cylinder body (1) is provided with an oil injection hole (8), and the outer wall of the oil cylinder body (1) is respectively provided with a water inlet pipe (7) and a water outlet pipe.

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