Self-locking safety hydraulic cylinder

Abstract

The utility model provides a self-locking type safety hydraulic cylinder, and belongs to the technical field of hydraulic cylinders. The self-locking type safety hydraulic cylinder is characterized by comprising a device main body; the number of the connecting rods is multiple, and the multiple connecting rods are fixedly connected to the surface of the device body; the shell is fixedly connected to the lower ends of the connecting rods; the limiting assembly comprises a telescopic rod, a rotating drum, a plurality of first sliding grooves, two second limiting blocks, two second sliding grooves and springs, the telescopic rod can be fixed to different heights by adjusting the limiting assembly, and the telescopic rod can be fixed to different heights by adjusting the rotating drum; therefore, the problems that a traditional self-locking type safety hydraulic cylinder cannot adapt to position locking at multiple heights during working, when the hydraulic cylinder needs to be fixed at the same height for a long time, the hydraulic cylinder needs to be in an electrified operation state all the time to keep the height, and energy is wasted are solved.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic cylinder technology, specifically relating to a self-locking safety hydraulic cylinder. Background Technology

[0002] Hydraulic cylinders are driven by hydraulic fluid in only one direction (e.g., extension or retraction), while relying on spring force or external load to reset in the other direction. If the hydraulic cylinder is single-acting and designed to automatically retract by a spring or other mechanism when pressure is lost, then when the system loses power, causing the hydraulic pump to stop working and the hydraulic oil pressure to be lost, the telescopic rod will retract due to spring force or gravity. Self-locking hydraulic cylinders are mechanical components designed to improve the safety of mechanical systems. They ensure that the current position is automatically locked to prevent accidental movement when the power source is lost through built-in or additional safety mechanisms. In short, self-locking safety hydraulic cylinders have become one of the indispensable key components of modern industry due to their excellent safety performance and reliability.

[0003] In existing technologies, traditional self-locking safety hydraulic cylinders cannot adapt to multiple heights when working. When they need to be fixed at the same height for a long time, the hydraulic cylinder needs to be constantly powered on to maintain the height, which is a waste of energy. Utility Model Content

[0004] The purpose of this invention is to provide a self-locking safety hydraulic cylinder, which aims to solve the problem that traditional self-locking safety hydraulic cylinders in the prior art cannot adapt to multiple heights during operation. When they need to be fixed at the same height for a long time, the hydraulic cylinder needs to be kept in a powered state to maintain the height, which wastes energy.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A self-locking safety hydraulic cylinder, comprising:

[0007] Main body of the device;

[0008] A plurality of connecting rods are provided, and all of the plurality of connecting rods are fixedly connected to the surface of the main body of the device;

[0009] The outer casing is fixedly connected to the lower ends of a plurality of connecting rods;

[0010] A limiting assembly includes a telescopic rod, a rotating cylinder, a first sliding groove, a second limiting block, a second sliding groove, and a spring. Multiple first sliding grooves are provided, and two second limiting blocks, two second sliding grooves, and two springs are provided. The telescopic rod is fixedly connected to the output end of the main body of the device. The rotating cylinder is rotatably connected to the circumferential surface of the telescopic rod and to the inner wall of the outer shell. Multiple first sliding grooves are formed on the inner wall of the rotating cylinder, and two second sliding grooves are formed on the surface of the telescopic rod. Two springs are respectively fixedly connected to the inner walls of two second sliding grooves, and two second limiting blocks are respectively slidably connected to the inner walls of two of the first sliding grooves.

[0011] A rotating assembly, wherein the rotating assembly is disposed at the lower end of the main body of the device;

[0012] A locking component, wherein the locking component is disposed within the housing.

[0013] In a preferred embodiment of this utility model, the rotating assembly includes a motor, a first gear, a second gear, and a rotating drum. The motor is fixedly connected to the surface of the outer casing, and the first gear...

[0014] The first gear is fixedly connected to the output end of the motor, and the second gear is fixedly connected to the circumferential surface of the rotating drum. The first gear and the second gear mesh with each other.

[0015] As a preferred embodiment of this utility model, the positioning component includes a first limiting block and a limiting groove. The limiting groove is formed on the inner wall of the outer shell, the first limiting block is rotatably connected to the inner wall of the limiting groove, and the first limiting block is fixedly connected to the circumferential surface of the rotating cylinder.

[0016] As a preferred embodiment of this utility model, the motor is a motor that can only rotate in one direction.

[0017] As a preferred embodiment of this utility model, the top of the main body of the device has multiple screws.

[0018] As a preferred embodiment of this utility model, the bottom surface and one of the sides of the second limiting block are both curved surfaces.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. In this solution, when the telescopic rod of the component needs to be extended to a certain height for extended operation, the extension operation is performed first. As the telescopic rod extends, when it passes through the first sliding groove, the second limiting block of the component is pushed into the first sliding groove under the action of a spring. Since the depth of the first sliding groove is less than the height of the second limiting block, a portion of the second limiting block will be located within the second sliding groove, thus fixing the second limiting block in place. If further downward adjustment is needed, due to the arc-shaped design of the lower end of the second limiting block, it will be squeezed and slid into the next first sliding groove until the desired height is reached. Then, the power supply to the main body of the device can be disconnected, preventing the telescopic rod from retracting and saving energy.

[0021] 2. In this solution, by using this device, when it is necessary to fix the telescopic rod at a certain height for operation, even if the main body of the device suddenly loses power, the telescopic rod will be fixed in place by the second limit block and will not fall or move accidentally, thereby greatly improving the safety of operation. Attached Figure Description

[0022] 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:

[0023] Figure 1 This is a first-hand perspective perspective view of the present invention;

[0024] Figure 2 This is an exploded view of the present invention;

[0025] Figure 3 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0026] In the diagram: 1. Main body of the device; 2. Connecting rod; 3. Telescopic rod; 4. Motor; 5. Housing; 6. First gear; 7. Second gear; 8. Rotary drum; 9. First sliding groove; 10. First limiting block; 11. Limiting groove; 12. Second limiting block; 13. Second sliding groove; 14. Spring. 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. 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.

[0028] Example

[0029] Please see Figures 1-3 The present invention provides the following technical solution:

[0030] A self-locking safety hydraulic cylinder, comprising:

[0031] Device body 1;

[0032] Connecting rod 2, multiple connecting rods 2 are provided, and multiple connecting rods 2 are fixedly connected to the surface of the main body 1 of the device;

[0033] The outer casing 5 is fixedly connected to the lower end of multiple connecting rods 2;

[0034] The limiting assembly includes a telescopic rod 3, a rotating cylinder 8, a first sliding groove 9, a second limiting block 12, a second sliding groove 13, and a spring 14. Multiple first sliding grooves 9 are provided, and two second limiting blocks 12, two second sliding grooves 13, and two springs 14 are provided. The telescopic rod 3 is fixedly connected to the output end of the main body 1 of the device. The rotating cylinder 8 is rotatably connected to the circumferential surface of the telescopic rod 3 and rotatably connected to the inner wall of the outer shell 5. Multiple first sliding grooves 9 are opened on the inner wall of the rotating cylinder 8, two second sliding grooves 13 are opened on the surface of the telescopic rod 3, two springs 14 are respectively fixedly connected to the inner walls of the two second sliding grooves 13, and two second limiting blocks 12 are respectively slidably connected to the inner walls of two of the first sliding grooves 9.

[0035] A rotating assembly is located at the lower end of the main body 1 of the device;

[0036] The locking component is located inside the housing 5.

[0037] In a specific embodiment of this utility model, when the telescopic rod 3 needs to be extended to a certain height, the telescopic rod 3 is first extended. When the telescopic rod 3 passes through the first sliding groove 9, the second limiting block 12 will be pushed into the first sliding groove 9 under the action of the spring force of the spring 14. Since the depth of the first sliding groove 9 is shallower than the height of the second limiting block 12, part of the second limiting block 12 is in the second sliding groove 13. At this time, the second limiting block 12 can be fixed. When it is necessary to continue to go down, since the bottom of the second limiting block 12 is curved, it will be squeezed and continue to slide down the next first sliding groove 9 until a suitable height is selected.

[0038] Please refer to the details. Figures 1-3 The rotating assembly includes a motor 4, a first gear 6, a second gear 7, and a rotating drum 8. The motor 4 is fixedly connected to the surface of the housing 5, the first gear 6 is fixedly connected to the output end of the motor 4, and the second gear 7 is fixedly connected to the circumferential surface of the rotating drum 8. The first gear 6 and the second gear 7 mesh with each other.

[0039] In this embodiment: when the telescopic rod 3 needs to be retracted, the motor 4 is turned to drive the first gear 6 to rotate, and then drive the second gear 7 to rotate. The second gear 7 drives the rotating drum 8 to rotate. Since the side of the second limiting block 12 is also curved, the second limiting block 12 will be squeezed into the second sliding groove 13. When the second limiting block 12 is completely disengaged from the first sliding groove 9, the telescopic rod 3 can be retracted.

[0040] Please refer to the details. Figures 1-3 The positioning component includes a first limiting block 10 and a limiting groove 11. The limiting groove 11 is opened on the inner wall of the outer shell 5. The first limiting block 10 is rotatably connected to the inner wall of the limiting groove 11 and is fixedly connected to the circumferential surface of the rotating cylinder 8.

[0041] In this embodiment: the first limiting block 10 is used to limit the rotating drum 8.

[0042] Please refer to the details. Figures 1-3 Motor 4 is a motor that can only rotate in one direction.

[0043] In this embodiment, motor 4 is a motor that can only rotate in one direction because the second limiting block 12 has only one side that is curved, so it can only rotate in one direction.

[0044] Please refer to the details. Figures 1-3 The top of the main body 1 of the device has multiple screws.

[0045] In this embodiment, the top of the device body 1 has multiple screws for fixing the device body 1 in the required position.

[0046] Please refer to the details. Figures 1-3 The bottom surface and one of the sides of the second limiting block 12 are both curved surfaces.

[0047] In this embodiment, the bottom surface and one of the sides of the second limiting block 12 are both curved surfaces because the curved surfaces can still move when rotating or descending.

[0048] It should be noted that the specific model of the device body 1 and motor 4 used shall be selected by those skilled in the art, and the above-mentioned device body 1 and motor 4 are all existing technologies, which will not be elaborated in this solution.

[0049] The working principle and usage process of this utility model are as follows: When the telescopic rod 3 needs to be extended to a certain height, it is first extended. When the telescopic rod 3 passes through the first sliding groove 9, the second limiting block 12 will be pushed into the first sliding groove 9 under the action of the spring force of the spring 14. Since the depth of the first sliding groove 9 is shallower than the height of the second limiting block 12, part of the second limiting block 12 is inside the second sliding groove 13, which can then fix the second limiting block 12. When it is necessary to continue downward, because the bottom of the second limiting block 12 is curved, it will be squeezed and continue to slide down the first sliding groove 9 until a suitable height is selected. Then the power supply of the main body 1 can be disconnected, which also prevents the telescopic rod 3 from retracting. Energy is saved. When the telescopic rod 3 needs to be retracted, the motor 4 is turned, which drives the first gear 6 to rotate, and then drives the second gear 7 to rotate. The second gear 7 drives the rotating drum 8 to rotate. Since the side of the second limiting block 12 is also curved, the second limiting block 12 will be squeezed into the second sliding groove 13. When the second limiting block 12 is completely disengaged from the first sliding groove 9, the telescopic rod 3 can be retracted. By adjusting the limiting components, the telescopic rod 3 can be fixed at different heights. This solves the problem that traditional self-locking safety hydraulic cylinders cannot adapt to multiple heights when working. When they need to be fixed at the same height for a long time, the hydraulic cylinder needs to be kept in a powered state to maintain the height, which wastes energy.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-locking safety hydraulic cartridge, characterized by: Include: Device body (1); Connecting rod (2), the connecting rod (2) is provided with multiple, multiple connecting rod (2) is fixedly connected to the surface of device body (1); Housing (5), the housing (5) is fixedly connected to the lower end of multiple connecting rod (2); Limiting assembly, the limiting assembly includes telescopic rod (3), rotating cylinder (8), first sliding slot (9), second limiting block (12), second sliding slot (13) and spring (14), the first sliding slot (9) is provided with multiple, the second limiting block (12), second sliding slot (13) and spring (14) are provided with two, the telescopic rod (3) is fixedly connected to the output end of device body (1), the rotating cylinder (8) is rotatably connected to the circumferential surface of telescopic rod (3), the rotating cylinder (8) is rotatably connected to the inner wall of housing (5), multiple first sliding slots (9) are all opened in the inner wall of rotating cylinder (8), two second sliding slots (13) are all opened in the surface of telescopic rod (3), two springs (14) are respectively fixedly connected to the inner wall of two second sliding slots (13), two second limiting blocks (12) are respectively slidably connected to the inner wall of two first sliding slots (9); Rotating assembly, the rotating assembly is arranged at the lower end of device body (1); The clamping assembly is arranged in the housing (5).

2. A self-locking safety hydraulic cartridge as defined in claim 1, wherein: The rotating assembly includes motor (4), first gear (6), second gear (7) and rotating cylinder (8), the motor (4) is fixedly connected to the surface of housing (5), the first gear (6) is fixedly connected to the output end of motor (4), the second gear (7) is fixedly connected to the circumferential surface of rotating cylinder (8), the first gear (6) and the second gear (7) are engaged.

3. A self-locking safety hydraulic cartridge as defined in claim 2, wherein: The clamping assembly includes first limiting block (10) and limiting slot (11), the limiting slot (11) is opened in the inner wall of housing (5), the first limiting block (10) is rotatably connected to the inner wall of limiting slot (11), and the first limiting block (10) is fixedly connected to the circumferential surface of rotating cylinder (8).

4. A self-locking safety hydraulic cartridge as defined in claim 3, wherein: The motor (4) is a motor that can only rotate in one direction.

5. A self-locking safety hydraulic cartridge as defined in claim 4, wherein: The top end of the device body (1) has multiple screws.

6. A self-locking safety hydraulic cartridge as defined in claim 5, wherein: The lower surface and one side surface of the second limiting block (12) are both arc surfaces.

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