Hydraulic cylinder with locking function

Abstract

The utility model discloses a hydraulic cylinder with a locking function, and relates to the technical field of hydraulic cylinders. The hydraulic cylinder comprises a cylinder body, a hydraulic rod is arranged in the cylinder body in a running fit mode, a piston is arranged in the cylinder body in a sliding fit mode, the piston is attached to the interior of the cylinder body, two fixing grooves are formed in the piston, and fixing blocks are arranged in the fixing grooves. A worker injects pressurizing liquid into the cylinder body on one side of the piston through the oil inlet, so that locking of the piston can be relieved, after pressurizing of the cylinder body is completed, under the action of the reset spring, the pressing plate conducts reset movement, the pressing plate moves to drive the moving rod to move, and the moving rod moves to drive the gear to rotate. The gear rotates to drive the rotating rod to rotate, and the rotating rod rotates to drive the moving block to move out of the interior of the fixed block, so that the piston can be locked, the moving block can lock the piston without external force, and the operation complexity of the locking mechanism is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of hydraulic cylinder, concretely relates to a hydraulic cylinder with locking function. BACKGROUND

[0002] Hydraulic cylinder is the hydraulic energy conversion mechanical energy, do linear reciprocating motion (or swing motion) hydraulic actuator, it simple structure, work is reliable, when it is used to realize reciprocating motion, can dispense with the speed reducer, and there is no transmission gap, movement is stable, therefore in the hydraulic system of various machines is widely used.

[0003] Because hydraulic cylinder is driven by liquid medium, so when hydraulic cylinder needs to extend and keep stable, because liquid exists fluctuation, so liquid pressure is used to keep it stable, at this moment, external locking mechanism is needed, conventional locking mechanism needs to exert external force to drive, leading to the complex operation of locking mechanism, the Chinese patent with publication number CN208686709U discloses a hydraulic cylinder with locking function, the above patent proves the objective existence of this shortcoming.

[0004] In view of this, the utility model is proposed. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, provide a hydraulic cylinder with locking function, solve the technical problem that the liquid exists fluctuation in the prior art, so liquid pressure is used to keep it stable, at this moment, external locking mechanism is needed, conventional locking mechanism needs to exert external force to drive, leading to the complex operation of locking mechanism.

[0006] To solve the above technical problems, the basic idea of the technical scheme of the utility model is:

[0007] A hydraulic cylinder with locking function, comprising: a cylinder body, a hydraulic rod rotatably fitted in the inside of the cylinder body, a piston slidably fitted in the inside of the cylinder body, the piston being in close contact with the inside of the cylinder body, two fixing grooves being formed in the inside of the piston, a fixing block being arranged in the inside of the fixing groove, and a locking device being arranged in the inside of the fixing block.

[0008] Optionally, the locking device comprises a moving block slidably fitted in the inside of the fixing block, a rotating rod threadedly fitted in the inside of the moving block, one end of the rotating rod being rotatably fitted in the inside of the fixing block, a gear being arranged in the inside of the rotating rod, a moving rod being meshingly arranged on the surface of the gear, two pressure grooves being formed in the inside of the fixing block, and a pressing plate being arranged at one end of the moving rod extending into the inside of the pressure groove.

[0009] Optionally, a return spring is arranged in the inside of the pressure groove, one end of the return spring close to the pressing plate being fixedly connected with the pressing plate.

[0010] Optionally, the interior of the piston is provided with an inclined groove, the interior of the piston is provided with an adaptive groove, the inclined groove and the adaptive groove are in communication, and the inclined groove and the adaptive groove are in communication with the pressure groove.

[0011] Optionally, the interior of the piston is provided with an inclined groove, the interior of the piston is provided with an adaptive groove, the inclined groove and the adaptive groove are in communication, and the inclined groove and the adaptive groove are in communication with the pressure groove.

[0012] Optionally, the interior of the piston is provided with an inclined groove, the interior of the piston is provided with an adaptive groove, the inclined groove and the adaptive groove are in communication, and the inclined groove and the adaptive groove are in communication with the pressure groove.

[0013] Optionally, the interior of the piston is provided with an inclined groove, the interior of the piston is provided with an adaptive groove, the inclined groove and the adaptive groove are in communication, and the inclined groove and the adaptive groove are in communication with the pressure groove.

[0014] After the above technical scheme is adopted, the present application has the following advantages compared with the prior art, of course, any product implementing the present application does not necessarily need to achieve all the advantages described below:

[0015] The staff injects the pressurized liquid into the interior of the piston side cylinder through the oil inlet, so that the interior pressure of the piston side cylinder becomes larger, the pressure is transmitted to the interior of the pressure groove through the inclined groove and the adaptive groove, the pressure plate moves, the moving rod moves, the gear rotates, the rotating rod rotates, the moving block is retracted into the interior of the fixed block, so that the locking of the piston is released, after the cylinder is pressurized, the pressure plate is reset under the action of the reset spring, the moving rod moves, the gear rotates, the rotating rod rotates, the moving block moves out of the interior of the fixed block, so that the locking of the piston is completed, the moving block can be locked without external force, and the locking mechanism operation is simplified.

[0016] The specific embodiments of the present application will be further described in detail below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0018] Figure 1 The drawing is a cylinder structure schematic diagram of the hydraulic cylinder with locking function of the present application;

[0019] Figure 2 The drawing is a cylinder internal structure schematic diagram of the hydraulic cylinder with locking function of the present application;

[0020] Figure 3The utility model discloses a fixed block internal structure schematic drawing of hydraulic cylinder with locking function.

[0021] Figure 4 For Figure 2 The structure schematic diagram of A in middle.

[0022] In the drawings, the component list represented by each sign is as follows:

[0023] 1, cylinder body;101, buffer spring;102, moving plate;2, hydraulic rod;201, piston;202, inclined groove;203, adaptive slot;204, sealing ring;205, fixed slot;3, oil inlet;4, fixed block;401, moving block;402, pressing plate;403, moving rod;404, reset spring;405, pressure groove;406, rotating rod;407, gear;5, limit block one;6, limit block two.

[0024] It needs to be explained that these drawings and literal descriptions do not aim at limiting the concept range of the utility model in any way, but illustrate the concept of the utility model for the person skilled in the art by referring to specific embodiments. Specific embodiments

[0025] Now the utility model will be further explained in detail in combination with the drawings.

[0026] Please refer to Figures 1-4 As shown in the drawing, in the embodiment, a kind of hydraulic cylinder with locking function is provided, including cylinder body 1, the inside rotation cooperation of cylinder body 1 has hydraulic rod 2, the inside sliding cooperation of cylinder body 1 has piston 201, piston 201 is attached with the inside of cylinder body 1, the inside of piston 201 is equipped with two fixed slots 205, fixed slot 205 is equipped with fixed block 4 inside, fixed block 4 is equipped with locking device inside.

[0027] The application of one aspect of the embodiment is: in use, the worker injects the pressurized liquid into the inside of the cylinder body 1 on one side of the piston 201 through the oil inlet 3, so that the pressure in the inside of the cylinder body 1 on one side of the piston 201 becomes large, the pressure is conducted to the inside of the pressure groove 405 through the inclined groove 202 and the adaptive groove 203, so that the pressing plate 402 moves, the movement of the pressing plate 402 drives the movement of the moving rod 403, the movement of the moving rod 403 drives the rotation of the gear 407, the rotation of the gear 407 drives the rotation of the rotating rod 406, and the rotation of the rotating rod 406 drives the movement of the moving block 401 into the inside of the fixed block 4, so that the locking of the piston 201 can be released, after the pressurization of the cylinder body 1 is completed, the pressing plate 402 is reset under the action of the reset spring 404, the movement of the pressing plate 402 drives the movement of the moving rod 403, the movement of the moving rod 403 drives the rotation of the gear 407, the rotation of the gear 407 drives the rotation of the rotating rod 406, and the rotation of the rotating rod 406 drives the movement of the moving block 401 out of the inside of the fixed block 4, so that the locking of the piston 201 can be completed, the operation process of the other side of the piston 201 in the inside of the cylinder body 1 is the same as the above, the buffer spring 101 and the moving plate 102 are arranged to buffer the hydraulic rod 2, the sealing ring 204 is arranged to increase the sealing effect of the piston 201 on the inside of the cylinder body 1 on both sides, the limiting block one 5 is arranged to limit the rotating rod 406, so as to keep the stability of the rotating rod 406 in the running process, and the limiting block two 6 is arranged to limit the moving rod 403, so as to keep the stability of the moving rod 403 in the running process.

[0028] The locking device of the embodiment comprises a moving block 401 which is slidingly fitted in the inside of a fixed block 4, a rotating rod 406 which is threadedly fitted in the inside of the moving block 401, the inside of the rotating rod 406 being provided with a gear 407, the surface of the gear 407 being engaged with a moving rod 403, the inside of the fixed block 4 being provided with two pressure grooves 405, and the end of the moving rod 403 extending into the inside of the pressure groove 405 being provided with a pressing plate 402. The pressure is conducted to the inside of the pressure groove 405 through the inclined groove 202 and the adaptive groove 203, so that the pressing plate 402 moves, the movement of the pressing plate 402 drives the movement of the moving rod 403, the movement of the moving rod 403 drives the rotation of the gear 407, the rotation of the gear 407 drives the rotation of the rotating rod 406, and the rotation of the rotating rod 406 drives the movement of the moving block 401 into the inside of the fixed block 4, so that the locking of the piston 201 can be released.

[0029] The inside of the pressure groove 405 of the embodiment is provided with a reset spring 404, and the end of the reset spring 404 close to the pressing plate 402 is fixedly connected with the pressing plate 402. The pressing plate 402 moves under the action of the reset spring 404.

[0030] The piston 201 of the embodiment is internally provided with two sealing rings 204 on both sides, which are in close contact with the inner wall of the cylinder body 1. By arranging the sealing rings 204, the sealing effect of the piston 201 on the interiors of both sides of the cylinder body 1 is increased.

[0031] The inside of the fixed block 4 is internally provided with a limiting block one 5, which is in rotational cooperation with the rotating rod 406, and the inside of the fixed block 4 is internally provided with two limiting block twos 6, which are in sliding cooperation with the moving rod 403. By arranging the limiting block one 5, the rotating rod 406 can be limited, and the stability of the rotating rod 406 in the running process is maintained. By arranging the limiting block two 6, the moving rod 403 can be limited, and the stability of the moving rod 403 in the running process is maintained.

[0032] The utility model is not limited to the above-mentioned embodiment, anyone should know the structural change made under the inspiration of the utility model, any identical or similar technical scheme with the utility model falls into the protection scope of the utility model. The utility model is not described in detail, and the technical, shape and structure parts are known technology.

Claims

1. A hydraulic cylinder with locking function, characterized in that, Include: The cylinder (1), the inside of the cylinder (1) is rotatably fitted with a hydraulic rod (2), the inside of the cylinder (1) is slidably fitted with a piston (201), the piston (201) is attached to the inside of the cylinder (1), two fixed grooves (205) are formed in the inside of the piston (201), the fixed block (4) is arranged in the inside of the fixed groove (205), and the locking device is arranged in the inside of the fixed block (4).

2. The hydraulic cylinder with locking function according to claim 1, characterized in that, The locking device comprises a moving block (401) slidably fitted in the inside of the fixed block (4), a rotating rod (406) threadedly fitted in the inside of the moving block (401), one end of the rotating rod (406) rotatably fitted in the inside of the fixed block (4), a gear (407) arranged in the inside of the rotating rod (406), a moving rod (403) arranged on the surface of the gear (407), two pressure grooves (405) formed in the inside of the fixed block (4), and a pressure plate (402) arranged on one end of the moving rod (403) extending into the inside of the pressure groove (405).

3. The hydraulic cylinder with locking function according to claim 2, characterized in that, The inside of the pressure groove (405) is provided with a reset spring (404), and one end of the reset spring (404) close to the pressure plate (402) is fixedly connected with the pressure plate (402).

4. The hydraulic cylinder with locking function according to claim 1, characterized in that, The inside of the piston (201) is provided with an inclined groove (202), and the inside of the piston (201) is provided with an adaptive groove (203), the inclined groove (202) and the adaptive groove (203) are communicated, and the inclined groove (202) and the adaptive groove (203) are communicated with the pressure groove (405).

5. The hydraulic cylinder with locking function according to claim 1, characterized in that, The inside of the piston (201) is provided with two sealing rings (204), and the sealing ring (204) is attached to the inner wall of the cylinder (1).

6. The hydraulic cylinder with locking function according to claim 1, characterized in that, The inside of the cylinder (1) is provided with a buffer spring (101), one end of the buffer spring (101) is provided with a moving plate (102), and the top and bottom of the inner wall of the cylinder (1) are provided with an oil inlet (3).

7. The hydraulic cylinder with locking function according to claim 2, characterized in that, The inside of the fixed block (4) is provided with a limiting block one (5), the limiting block one (5) is rotatably fitted with the rotating rod (406), the inside of the fixed block (4) is provided with two limiting block two (6), and the limiting block two (6) is slidably fitted with the moving rod (403).

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