Bidirectional hydraulic lock

Abstract

The utility model provides a bidirectional hydraulic lock which comprises a lock body, a middle cavity is formed in the lock body, a first cavity and a second cavity are symmetrically formed in the two sides of the middle cavity respectively, two symmetrical auxiliary cavities are arranged in the middle cavity, limiting rings are arranged in the two auxiliary cavities, and a sliding groove is formed in the inner wall of the middle cavity; a middle cavity is formed in the lock body, a lock cylinder is arranged in the middle cavity, a limiting block matched with the sliding groove is arranged on the peripheral wall of the center of the lock cylinder, the limiting block is located in the sliding groove, a first groove and a second groove are symmetrically formed in the peripheral wall of the lock cylinder, and an observation window penetrating through the middle cavity is formed in one side of the lock body. The limiting blocks on the circumferential wall of the lock cylinder are guided to move accurately through the sliding grooves, deviation caused by oil friction is effectively avoided, meanwhile, the sliding blocks are limited through the limiting rings in the two auxiliary cavities, it is guaranteed that the lock cylinder keeps stable in the reciprocating motion process, the motion state of the lock cylinder can be monitored in real time through the observation window, and abnormity can be found in time.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic locks, and in particular to a two-way hydraulic lock. Background Technology

[0002] The role and importance of a two-way hydraulic lock in a hydraulic system cannot be ignored. Its primary function is to ensure unidirectional flow of hydraulic oil within the system, preventing reverse flow and thus protecting other components from damage. This type of lock is typically installed in the hydraulic system circuit, especially in applications requiring precise control of fluid direction. By using a two-way hydraulic lock, reverse flow of hydraulic oil due to pressure fluctuations or unexpected situations can be effectively avoided, ensuring system stability and reliability. Furthermore, it helps improve system efficiency because controlling the fluid flow direction reduces energy loss and optimizes the performance of the hydraulic system.

[0003] There is currently a Chinese patent document CN202322393632.6 regarding a bidirectional hydraulic lock for improving sealing performance. This patent describes a bidirectional hydraulic lock that improves sealing performance by providing buffer protection for the oil pipe when it sways, preventing pipe rupture. The bidirectional hydraulic lock includes a bidirectional hydraulic lock, fixed plates, fixing screws, and a first sealing ring. Fixed plates are located on both sides of the bidirectional hydraulic lock. Multiple fixing screws are rotatably connected to the opposite side of the fixed plates, and these screws are threadedly connected to the bidirectional hydraulic lock. A first sealing ring is connected to the adjacent side of the fixed plates. This invention achieves the effect of buffering and protecting the oil pipe when it sways, preventing pipe rupture, by connecting the oil supply pipe to a connecting guide screw threadedly. When the oil pipe sways, the connecting guide screw thread moves, causing a second spring to be compressed, contracted, and then rebound.

[0004] The aforementioned patent exhibits certain limitations in practical applications. Under high-intensity operating conditions, the spool valve reciprocates frequently in the bidirectional hydraulic lock to control the stability of the oil circuit. However, under high-intensity operating conditions, the spool valve may shift due to oil friction, resulting in incomplete locking and thus negatively impacting the stability of the hydraulic system.

[0005] To address this issue, a two-way hydraulic lock is proposed. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology in which the slide valve in the two-way hydraulic lock is often not locked tightly due to oil friction, this utility model provides a two-way hydraulic lock.

[0007] This utility model is achieved using the following technical solution:

[0008] A two-way hydraulic lock, comprising

[0009] The lock body has a central cavity, and a first cavity and a second cavity are symmetrically arranged on both sides of the central cavity. The central cavity has two symmetrical secondary cavities, and the two secondary cavities are provided with limiting rings. The inner wall of the central cavity is provided with a sliding groove.

[0010] The central cavity contains a lock cylinder, and the central peripheral wall of the lock cylinder is provided with a limiting block that matches the slide groove, and the limiting block is located in the slide groove. The peripheral wall of the lock cylinder is symmetrically provided with a first groove and a second groove, and an observation window is provided through the central cavity on one side of the lock body.

[0011] As a preferred embodiment of this utility model, a spring valve core is installed in both the first cavity and the second cavity, and the spring valve core is provided with an installation recess near the peripheral wall of the first cavity and the second cavity. A sealing ring is installed in the installation recess, and a valve cover is provided at the end of the spring valve core near the lock cylinder.

[0012] As a preferred embodiment of this utility model, the bottom end of the lock body is provided with an inlet a, the top of the inlet a is inclined and penetrates the first cavity to provide a channel a, and the top of the lock body penetrates the first cavity to provide an outlet a.

[0013] As a preferred embodiment of this utility model, the top of the lock body is provided with an inlet b at the end away from outlet a, the top of the inlet b is inclined and penetrates the second cavity to provide a channel b, and the bottom of the lock body is provided with an outlet b at the end away from inlet a, penetrating the second cavity.

[0014] As a preferred embodiment of this utility model, a plurality of positioning bolts are provided on one side of the outer wall of the spring valve core to fix it to the side wall of the lock body.

[0015] In a preferred embodiment of this utility model, the grooves extend into the inner walls of the two secondary cavities.

[0016] In a preferred embodiment of this utility model, both inlet a and inlet b have threaded inner walls.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] 1. By setting a slide groove in the inner cavity, the limiting block on the peripheral wall of the lock cylinder is guided to move precisely through the slide groove, which effectively avoids the deviation caused by oil friction. At the same time, two secondary cavities are symmetrically set in the inner cavity. The limiting rings in the two secondary cavities limit the slider and ensure that the lock cylinder remains stable during reciprocating motion, thereby significantly improving the locking accuracy and system stability of the two-way hydraulic lock.

[0019] 2. An observation window is provided through the central cavity on one side of the lock body. Through the observation window, the positional changes of the first and second grooves on the peripheral wall of the lock cylinder can be monitored in real time, and the state of the lock cylinder can be detected and adjusted in a timely manner to ensure the safe and reliable operation of the hydraulic system.

[0020] 3. By setting channels a and b at an angle at inlet a and inlet b respectively, which are oil inlets, the oil is prevented from directly rushing into the first and second cavities of the lock body. Channels a and b optimize the oil flow path and reduce the impact force of the oil. At the same time, channels a and b connect the first and second cavities closer to the lock cylinder, ensuring uniform oil distribution and further reducing friction loss. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the present invention;

[0022] Figure 2 This is an exploded view of the present invention;

[0023] Figure 3 This is an overall sectional view of the present invention;

[0024] Figure 4 This is a cross-sectional view of the observation window of this utility model;

[0025] Figure 5 This is a structural diagram of the inner cavity and sliding groove of this utility model;

[0026] In the diagram: 1. Lock body; 11. Middle cavity; 12. Secondary cavity; 13. Limiting ring; 14. Slide groove; 2. Lock cylinder; 21. First groove; 22. Second groove; 23. Limiting block; 3. First cavity; 4. Second cavity; 5. Spring valve core; 51. Mounting notch; 52. Sealing ring; 53. Valve cover; 54. Positioning bolt; 6. a. Inlet; 61. a. Channel; 62. a. Outlet; 7. b. Inlet; 71. b. Channel; 72. b. Outlet; 8. Observation window. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] Example:

[0029] Please see Figures 1-5 A two-way hydraulic lock, comprising:

[0030] The lock body 1 has a central cavity 11, and a first cavity 3 and a second cavity 4 are symmetrically arranged on both sides of the central cavity 11. The central cavity 11 has two symmetrical secondary cavities 12, and the two secondary cavities 12 are provided with limiting rings 13. The inner wall of the central cavity 11 is provided with a sliding groove 14.

[0031] The central cavity 11 is provided with a lock cylinder 2. The central peripheral wall of the lock cylinder 2 is provided with a limiting block 23 that matches the slide groove 14, and the limiting block 23 is located in the slide groove 14. The peripheral wall of the lock cylinder 2 is symmetrically provided with a first groove 21 and a second groove 22. The lock body 1 is provided with an observation window through the central cavity 11 on one side.

[0032] In this embodiment, a central cavity 11 is provided in the middle of the lock body 1. A first cavity 3 and a second cavity 4 are symmetrically arranged on both sides of the central cavity 11. Two secondary cavities 12 are also symmetrically arranged inside the central cavity 11, each containing a limiting ring 13. A sliding groove 14 is provided on the inner wall of the central cavity 11. A lock cylinder 2 is installed inside the central cavity 11. The lock cylinder 2, installed in the central cavity 11, separates the first cavity 3 and the second cavity 4 into two independent working areas, ensuring that the oil is evenly distributed within the first cavity 3 and the second cavity 4. The lock cylinder 2 has a limiting block 23 on its outer wall. The limiting block 23 and the slide groove 14 are assembled together. The lock cylinder 2 slides in the slide groove 14 through the limiting block 23, thereby achieving precise positioning of the lock cylinder 2 and reducing mechanical wear. The lock cylinder 2 has a first groove 21 and a second groove 22 symmetrically arranged on its peripheral wall. At the same time, an observation window 8 is provided on one side of the lock body 1 through the central cavity 11. The position changes of the first groove 21 and the second groove 22 on the peripheral wall of the lock cylinder 2 can be monitored in real time through the observation window 8, so as to detect and adjust the state of the lock cylinder 2 in a timely manner.

[0033] Specifically, a spring valve core 5 is installed in both the first cavity 3 and the second cavity 4, and the spring valve core 5 is provided with an installation recess 51 near the peripheral wall of the first cavity 3 and the second cavity 4. A sealing ring 52 is installed in the installation recess 51, and a valve cover 53 is provided at the end of the spring valve core 5 near the lock cylinder 2.

[0034] In this embodiment, spring valve cores 5 are installed on both sides of the lock body 1, and the spring valve cores 5 are located inside the first cavity 3 and the second cavity 4. The spring valve core 5 has a mounting recess 51 on its peripheral wall near the position of the first cavity 3 and the second cavity 4. A sealing ring 52 is embedded in the mounting recess 51 to ensure that the oil does not leak. A valve cover 53 is provided on the side of the spring valve core 5 near the lock cylinder 2. When the lock cylinder 2 moves to one side of the cavity, the valve cover 53 is compressed and contracts, opening the oil passage of the corresponding cavity to prevent backflow.

[0035] Specifically, the bottom end of the lock body 1 is provided with an inlet 6, the top of the inlet 6 is inclined and penetrates the first cavity 3 to provide an outlet 62, and the top of the lock body 1 penetrates the first cavity 3 to provide an outlet 62.

[0036] In this embodiment, the bottom end of the lock body 1 is provided with an inlet 6 (a), and the top of the inlet 6 is provided with an a channel 61 (a) that penetrates the first cavity 3. The a channel 61 is connected to the inside of the first cavity 3 and is inclined so that when the oil enters the first cavity 3, it does not directly impact the lock cylinder 2, but flows smoothly along the inclined surface, reducing pressure fluctuations and ensuring uniform oil distribution. The top of the lock body 1 is provided with an outlet 62 (a) that penetrates the first cavity 3 and is connected to the inside of the first cavity 3. The oil is discharged through the outlet 62.

[0037] Specifically, the top of the lock body 1 is provided with an inlet 7 (b) at the end away from outlet 62 (a). The top of inlet 7 (b) is inclined and penetrates the second cavity 4 to provide a channel 71 (b). The bottom of the lock body 1 is provided with an outlet 72 (b) at the end away from inlet 62 (a) and penetrates the second cavity 4.

[0038] In this embodiment, the top of the lock body 1, away from outlet a 62, is provided with inlet b 7. The top of inlet b 7 is inclined and penetrates the second cavity 4 to provide channel b 71. Channel b 71 communicates with the interior of the second cavity 4 to ensure that the oil enters the second cavity 4 smoothly. Channel b 71 is inclined so that the oil flows along the slope when entering the second cavity 4, reducing impact. The bottom of the lock body 1, away from inlet a 62, penetrates the second cavity 4 to provide outlet b 72. Outlet b 72 communicates with the interior of the second cavity 4, and the oil is discharged through outlet b 72.

[0039] Specifically, a plurality of positioning bolts 54 are provided on one side of the outer wall of the spring valve core 5 to fix it to the side wall of the lock body 1.

[0040] In this embodiment, a plurality of positioning bolts 54 are provided on one side of the spring valve core 5, and the spring valve core 5 is fixed to the side wall of the lock body 1 by the positioning bolts 54.

[0041] Specifically, each of the grooves 14 extends into the inner wall of the two secondary cavities 12.

[0042] In this embodiment, the slide groove 14 extends the inner wall of the two secondary cavities 12 and connects the first cavity 3 and the second cavity 4. When the lock cylinder 2 needs to be installed, the lock cylinder 2 can be placed into the middle cavity 11 from either the first cavity 3 or the second cavity 4, which facilitates the installation of the lock cylinder 2 into the middle cavity 11.

[0043] Specifically, both inlet a (6) and inlet b (7) have threaded inner walls.

[0044] In this embodiment, the inner walls of inlet a 6 and inlet b 7 are both threaded, and both inlet a 6 and inlet b 7 are oil inlets. The oil inlets usually have higher oil pressure. The threaded connection through the external oil circuit ensures smooth oil flow and facilitates installation and disassembly.

[0045] The principle of this utility model is as follows: During installation, firstly, a limiting ring 13 is installed in one secondary cavity 12. Then, the limiting block 23 on the periphery of the lock cylinder 2 is inserted into the slide groove 14 through the first cavity 3 or the second cavity 4. Subsequently, a limiting ring 13 is installed in another secondary cavity 12. After the limiting ring 13 in the secondary cavity 12 is installed, the lock cylinder 2 is fixed in the middle cavity 11, separating the first cavity 3 and the second cavity 4 into two separate cavities. Then, the sealing ring 52 is embedded into the installation recess 51. The spring valve core 5 is fixed in the first cavity 3 and the second cavity 4 by multiple positioning bolts 54. When oil enters through inlet 6, the oil... The oil enters the first cavity 3 through channel a 61. The oil pushes the lock cylinder 2 to move into the second cavity 4. Under the push of the lock cylinder 2, the valve cover 53 located in the second cavity 4 is gradually squeezed, and the spring valve core 5 contracts. The oil flows from the inlet b 7 into channel b 71 and then into the second cavity 4. Under the action of the valve core, the oil is smoothly discharged from the outlet b 72. When the oil stops, under the action of the spring valve core 5, the lock cylinder 2 is pushed back to its original position. During the entire movement, the limiting block 23 on the peripheral wall of the lock cylinder 2 is always located in the slide groove 14. The limiting ring 13 in the secondary cavity 12 limits the displacement distance of the limiting block 23.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A two-way hydraulic lock, characterized in that, include: The lock body has a central cavity, and a first cavity and a second cavity are symmetrically arranged on both sides of the central cavity. The central cavity has two symmetrical secondary cavities, and the two secondary cavities are provided with limiting rings. The inner wall of the central cavity is provided with a sliding groove. The central cavity contains a lock cylinder, and the central peripheral wall of the lock cylinder is provided with a limiting block that matches the slide groove, and the limiting block is located in the slide groove. The peripheral wall of the lock cylinder is symmetrically provided with a first groove and a second groove, and an observation window is provided through the central cavity on one side of the lock body.

2. The bidirectional hydraulic lock according to claim 1, characterized in that: Both the first cavity and the second cavity are equipped with spring valve cores, and the spring valve cores are provided with mounting recesses on the peripheral walls of the first cavity and the second cavity. A sealing ring is installed in the mounting recess, and a valve cover is provided on the end of the spring valve core near the lock cylinder.

3. A bidirectional hydraulic lock according to claim 2, characterized in that: The lock body has an inlet (a) at one bottom end, an inlet (a) at the top end of which is inclined and penetrates the first cavity to form a channel (a), and an outlet (a) at the top end of the lock body penetrating the first cavity.

4. A bidirectional hydraulic lock according to claim 3, characterized in that: The top of the lock body is provided with an inlet b at the end away from outlet a. The top of the inlet b is inclined and penetrates the second cavity to form a channel b. The bottom of the lock body is provided with an outlet b at the end away from inlet a, penetrating the second cavity.

5. A bidirectional hydraulic lock according to claim 2, characterized in that: The spring valve core has multiple positioning bolts fixed to the side wall of the lock body on one side of its outer wall.

6. A bidirectional hydraulic lock according to claim 1, characterized in that: The grooves all extend into the inner walls of the two secondary cavities.

7. A bidirectional hydraulic lock according to claim 4, characterized in that: Both inlet a and inlet b have threaded inner walls.

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