Hydraulic flat key

Abstract

The utility model relates to the technical field of hydraulic flat keys, and solves the problems that a flat key cannot be changed according to the size of a suite, so that the flat key cannot adapt to the installation size of the suite, the installation is inconvenient, and certain difficulty is brought to maintenance. The hydraulic flat key comprises a flat key body, a first circular groove and a second circular groove are formed in the top of the flat key body, an oil injection valve assembly is arranged in the first circular groove, and a pressure relief assembly used for relieving pressure and releasing high-pressure oil in a cavity is arranged in the second circular groove. The pressure relief assembly comprises a pressure relief column arranged in the second circular groove, a threaded hole is formed in the top of the pressure relief column, a threaded column is arranged in the threaded hole, an ejector rod is arranged at the bottom end of the threaded column, a pressure relief cavity is formed in the bottom end of the pressure relief column, and the top end of the pressure relief cavity communicates with the threaded hole. A ball is arranged at the inner bottom of the threaded hole, and a pressure relief hole is formed in the side face of the pressure relief column.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic flat key technology, specifically a hydraulic flat key. Background Technology

[0002] The anti-slip flat key disclosed in CN204755491U includes a flat key body, with anti-slip plates respectively fitted at both ends of the flat key body, and a locking structure for locking the anti-slip plates is provided on the flat key body.

[0003] Even if the coupling undergoes relative displacement, as long as the coupling does not separate, the key body will not move or slide off the keyway, and can still effectively transmit torque and motion, thus enabling the coupling to continue to work and extending its service life.

[0004] However, the flat key cannot be adapted to the size of the kit, thus failing to fit the installation dimensions of the kit, making installation inconvenient and increasing the difficulty of maintenance. This solution is not efficient for flat key maintenance. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a hydraulic flat key, which solves the problem that the flat key cannot be adjusted according to the size of the kit, thus failing to adapt to the installation size of the kit, making installation inconvenient and causing certain difficulties in maintenance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic flat key, comprising a flat key body, wherein a first circular groove and a second circular groove are respectively provided on the top of the flat key body, and an oil injection valve assembly is provided inside the first circular groove, while a pressure relief assembly for releasing high-pressure oil in the pressure relief chamber is provided inside the second circular groove.

[0007] In a specific embodiment, the pressure relief assembly includes a pressure relief column disposed inside the second circular groove, and the top of the pressure relief column is provided with a threaded hole, and the threaded hole is provided with a threaded post inside, while the bottom end of the threaded post is provided with a push rod. The bottom end of the pressure relief column is provided with a pressure relief cavity, and the top end of the pressure relief cavity is connected to the threaded hole, while the bottom of the threaded hole is provided with a ball.

[0008] In one specific embodiment, a pressure relief hole is provided on the side of the pressure relief column, and one end of the pressure relief hole is connected to one side of the threaded hole.

[0009] In one specific embodiment, the oil injection valve assembly includes an oil injection column disposed inside the first circular groove, and the top of the oil injection column is provided with an oil injection hole, and the bottom of the oil injection hole is provided with a plug ball larger than its diameter, and the bottom of the plug ball is provided with a spring.

[0010] In one specific embodiment, the bottom of the oil injection column is connected to a first cavity, and the bottom of the first cavity is connected to a U-shaped cavity.

[0011] In one specific embodiment, the bottom of the pressure relief column is connected to a second cavity, and the bottom end of the second cavity is connected to one side of the top of the U-shaped cavity.

[0012] Compared with the prior art, the present invention provides a hydraulic flat key, which has the following beneficial effects:

[0013] In the technical solution disclosed in this utility model, by utilizing the setting of the pressure relief component, when installing the flat key body, the flat key body is fitted into the kit, and high-pressure oil is injected into the interior of the first cavity through the oil injection column. At this time, the high-pressure oil will impact the ball and compress the spring, thus reaching the interior of the first cavity. After the high-pressure oil injection is completed, the flat key body will be displaced to both sides under the action of the high-pressure oil, which can meet the size installation requirements. When it is necessary to disassemble and maintain, simply rotate the threaded column, so that the threaded column moves upward inside the threaded hole. At this time, the high-pressure oil inside the U-shaped cavity will be released into the pressure relief cavity along the second cavity and lift the ball. Then, the high-pressure oil will enter the interior of the threaded hole from the pressure relief cavity and be released from the interior of the pressure relief hole, thereby causing the size of the flat key body to be restored, thus achieving the purpose of convenient disassembly and maintenance. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the flat key of this utility model;

[0017] Figure 3 This is a schematic diagram of the pressure relief component structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the oil injection valve assembly structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0020] In the diagram: 1. Flat key body; 2. First circular groove; 3. Second circular groove; 4. Oil valve assembly; 41. Oil injection column; 42. Oil injection hole; 43. Plug ball; 44. Spring; 5. Pressure relief assembly; 51. Pressure relief column; 511. Pressure relief chamber; 512. Ball; 513. Pressure relief hole; 52. Threaded hole; 53. Threaded column; 54. Push rod; 6. First cavity; 7. U-shaped cavity; 8. Second cavity. Detailed Implementation

[0021] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Figures 1-4 In one embodiment of this utility model, a hydraulic flat key includes a flat key body 1. The top of the flat key body 1 is respectively provided with a first circular groove 2 and a second circular groove 3. An oil injection valve assembly 4 is provided inside the first circular groove 2, and a pressure relief assembly 5 for releasing high pressure oil in the cavity is provided inside the second circular groove 3.

[0023] The specific problem addressed in this embodiment is to solve the problem that the flat key cannot be changed according to the size of the kit, thus failing to adapt to the installation size of the kit, making installation inconvenient and causing certain difficulties in maintenance. This utility model utilizes the pressure relief component 5. When installing the key body 1, the key body 1 is fitted into the kit, and high-pressure oil is injected into the first cavity 6 through the oil injection column 41. At this time, the high-pressure oil impacts the ball 43 and compresses the spring 44, thus reaching the inside of the first cavity 6. After the high-pressure oil injection is completed, the key body 1 is displaced to both sides under the action of the high-pressure oil, which can meet the size installation requirements. When it is necessary to remove it for maintenance, simply rotate the threaded column 53 so that the threaded column 53 moves upward inside the threaded hole 52. At this time, the high-pressure oil inside the U-shaped cavity 7 will be released into the pressure relief cavity 511 along the second cavity 8 and lift the ball 512. At this time, the high-pressure oil will enter the inside of the threaded hole 52 from the pressure relief cavity 511 and be released from the inside of the pressure relief hole 513, thereby causing the size of the key body 1 to be restored, thus achieving the purpose of convenient disassembly and maintenance.

[0024] The pressure relief assembly 5 includes a pressure relief column 51 disposed inside the second circular groove 3. The top of the pressure relief column 51 is provided with a threaded hole 52, and a threaded column 53 is disposed inside the threaded hole 52. A push rod 54 is disposed at the bottom end of the threaded column 53. A pressure relief cavity 511 is disposed inside the bottom end of the pressure relief column 51. The top end of the pressure relief cavity 511 is connected to the threaded hole 52. A ball 512 is disposed at the bottom of the threaded hole 52. In this specific embodiment, a pressure relief hole 513 is disposed on the side of the pressure relief column 51, and one end of the pressure relief hole 513 is connected to one side of the threaded hole 52. When installing the key body 1, the key body 1 is fitted into the kit, and high-pressure oil is injected into the first cavity 6 through the oil injection column 41. At this time, the high-pressure oil will impact the ball plug 43 and compress the spring 44, thus reaching the inside of the first cavity 6. After the high-pressure oil is injected, the key body 1 will move to both sides under the action of the high-pressure oil to meet the size installation requirements. When it is necessary to remove it for maintenance, simply rotate the threaded column 53 so that the threaded column 53 moves upward inside the threaded hole 52. At this time, the high-pressure oil inside the U-shaped cavity 7 will be released into the pressure relief cavity 511 through the second cavity 8 and lift the ball 512. At this time, the high-pressure oil will enter the inside of the threaded hole 52 from the pressure relief cavity 511 and be released from the inside of the pressure relief hole 513, thereby causing the size of the key body 1 to be restored, thus achieving the purpose of convenient disassembly and maintenance.

[0025] In this specific embodiment, the oil injection valve assembly 4 includes an oil injection column 41 disposed inside the first circular groove 2, and the top of the oil injection column 41 is provided with an oil injection hole 42, and the bottom of the oil injection hole 42 is provided with a plug ball 43 larger than its hole diameter, and the bottom of the plug ball 43 is provided with a spring 44. The bottom of the oil injection column 41 is connected to a first cavity 6, and the bottom of the first cavity 6 is connected to a U-shaped cavity 7. The bottom of the pressure relief column 51 is connected to a second cavity 8, and the bottom end of the second cavity 8 is connected to one side of the top of the U-shaped cavity 7.

[0026] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0027] It should be noted that, in this document, 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 process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic flat key, comprising a flat key body (1), characterized in that: The top of the flat key body (1) is provided with a first circular groove (2) and a second circular groove (3), and the first circular groove (2) is provided with an oil injection valve assembly (4), while the second circular groove (3) is provided with a pressure relief assembly (5) for releasing high pressure oil in the cavity. The pressure relief assembly (5) includes a pressure relief column (51) disposed inside the second circular groove (3), and a threaded hole (52) is provided at the top of the pressure relief column (51), and a threaded column (53) is provided inside the threaded hole (52), and a push rod (54) is provided at the bottom end of the threaded column (53). The oil injection valve assembly (4) includes an oil injection column (41) disposed inside the first circular groove (2), and the top of the oil injection column (41) is provided with an oil injection hole (42), and the bottom of the oil injection hole (42) is provided with a plug ball (43) larger than its diameter, and the bottom of the plug ball (43) is provided with a spring (44).

2. A hydraulic flat key according to claim 1, characterized in that: The pressure relief column (51) has a pressure relief cavity (511) inside its bottom end, and the top of the pressure relief cavity (511) is connected to the threaded hole (52), and a ball (512) is provided at the bottom of the threaded hole (52).

3. A hydraulic flat key according to claim 1, characterized in that: The pressure relief column (51) has a pressure relief hole (513) on its side, and one end of the pressure relief hole (513) is connected to one side of the threaded hole (52).

4. A hydraulic flat key according to claim 1, characterized in that: The bottom of the oil injection column (41) is connected to a first cavity (6), and the bottom of the first cavity (6) is connected to a U-shaped cavity (7).

5. A hydraulic flat key according to claim 1, characterized in that: The bottom of the pressure relief column (51) is connected to a second cavity (8), and the bottom end of the second cavity (8) is connected to one side of the top of the U-shaped cavity (7).

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