Anti-falling oil cylinder

Abstract

This utility model relates to an anti-fall hydraulic cylinder, which includes a cylinder body and a piston, the piston being movably fitted into the cylinder body. The cylinder also includes a connecting member with a passage group inside. Furthermore, the cylinder includes functional components disposed on the connecting member and all connected to the cylinder body via the passage group. This novel anti-fall hydraulic cylinder solves the problems of slow response, complex structure, easy wear, and large system space occupation of traditional mechanical locking mechanisms through the integrated design of the functional components and the passage group within the connecting member. It achieves instantaneous locking of the oil circuit by rapidly responding to electrical signals using an electromagnetic ball valve, avoiding reliance on mechanical drive. Simultaneously, a pressure sensor monitors the oil pressure in real time and links the explosion-proof valve and the electromagnetic ball valve to form a multi-level safety protection mechanism, effectively preventing load loss and falls, balancing dynamic stability and emergency response capabilities, and significantly improving the safety and reliability of engineering machinery, lifting platforms, and other scenarios.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic transmission and control technology, and in particular to an anti-fall cylinder. Background Technology

[0002] Hydraulic cylinders, as power actuators, are widely used in engineering machinery, metallurgical equipment, and marine deck machinery, characterized by high power density and strong load-bearing capacity. However, in lifting and supporting operations such as crane telescopic booms and hydraulic lifting platforms, when the hydraulic system experiences a pipeline rupture, valve failure, or sudden pressure loss, the piston rod may retract rapidly under the load's weight, leading to a equipment fall. Such accidents not only damage the equipment but also pose a significant safety threat to operators and the surrounding environment.

[0003] Currently, the most commonly used anti-fall solutions in the industry mainly employ mechanical locking mechanisms, such as pin-type safety locks. However, mechanical pin mechanisms require additional drive devices, resulting in drawbacks such as complex structure and delayed action. Furthermore, frequent locking can easily lead to mechanical wear. In addition, traditional anti-fall devices are often designed separately from the hydraulic cylinder body, resulting in low system integration, large space occupation, and difficulty in meeting the installation requirements of compact equipment. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an anti-fall hydraulic cylinder to solve one or more problems in the prior art.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: An anti-fall hydraulic cylinder includes a cylinder body and a piston, the piston being movably fitted into the cylinder body; the cylinder also includes a connecting member, the connecting member having a passage group inside; the cylinder also includes functional components, the functional components being disposed on the connecting member and all being connected to the cylinder body via the passage group.

[0006] Furthermore, a limiting block is provided at the end of the cylinder body away from the connector, and a boss is formed on the end face of the cylinder body near the connector, with a recessed portion provided in the boss.

[0007] Furthermore, the piston is provided with a pressure plate at one end of the cylinder body, and the pressure plate is movably located between the limiting block and the boss.

[0008] Furthermore, the passage group includes a first pipe and a second pipe, one end of the first pipe is connected to the recess, and the other end of the first pipe is connected to the second pipe.

[0009] Furthermore, the functional components include an explosion-proof valve, a safety valve, a shut-off valve, and a solenoid ball valve, with one end of each of the explosion-proof valve, the safety valve, the shut-off valve, and the solenoid ball valve connected to the second pipeline.

[0010] Furthermore, the passage group also includes a third pipeline, and the functional component also includes an energy storage device. One end of the third pipeline is connected to the electromagnetic ball valve, and the other end is connected to the energy storage device.

[0011] Furthermore, the passage group also includes a fourth conduit, and the functional component also includes a pressure sensor. One end of the fourth conduit is partially connected to the recess and partially connected to the boss, and the other end is connected to the pressure sensor.

[0012] Furthermore, the pathway group also includes a fifth pipeline, and the functional component also includes a pressure testing connector, with one end of the fifth pipeline connected to the pressure sensor and the other end connected to the pressure testing connector.

[0013] Furthermore, the outer wall of the limiting block and the inner wall of the cylinder form a cavity along the first direction; the safety valve, the shut-off valve and the solenoid ball valve are all connected to the cavity via pipelines.

[0014] Furthermore, the piston has a first shaft hole at the end away from the cylinder, and the connector has a second shaft hole.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This novel anti-fall cylinder solves the problems of slow response, complex structure, easy wear, and large system space occupation of traditional mechanical locking mechanisms through the integrated design of functional components and the passage group within the connecting parts. It achieves instantaneous locking of the oil circuit through a rapid response of an electromagnetic ball valve to an electrical signal, avoiding reliance on mechanical drive; simultaneously, a pressure sensor monitors the oil pressure in real time and links the explosion-proof valve and the electromagnetic ball valve to form a multi-level safety protection mechanism, effectively preventing load loss and fall, balancing dynamic stability and emergency response capabilities, and significantly improving the safety and reliability of engineering machinery, lifting platforms, and other scenarios. Attached Figure Description

[0016] Figure 1 This diagram illustrates the structure of an anti-fall hydraulic cylinder according to an embodiment of the present invention. Figure I .

[0017] Figure 2 A perspective view of the structure of an anti-fall hydraulic cylinder according to an embodiment of the present invention is shown.

[0018] Figure 3 This diagram illustrates the structure of an anti-fall hydraulic cylinder according to an embodiment of the present invention. Figure II .

[0019] Figure 4 This diagram illustrates the structure of an anti-fall hydraulic cylinder according to an embodiment of the present invention. Figure III .

[0020] Figure 5 The diagram shows a cross-sectional view of an anti-fall hydraulic cylinder according to an embodiment of the present invention in the AA direction.

[0021] Figure 6 The diagram shows the hydraulic principle of an anti-fall cylinder according to an embodiment of the present invention.

[0022] The following are labels in the attached diagram: 1. Cylinder body; 11. Limiting block; 12. Boss; 13. Recess; 2. Piston; 21. Pressure plate; 22. First shaft hole; 3. Connecting piece; 31. Passage group; 311. First pipeline; 312. Second pipeline; 313. Third pipeline; 314. Fourth pipeline; 315. Fifth pipeline; 32. Second shaft hole; 4. Functional component; 41. Explosion-proof valve; 42. Safety valve; 43. Shut-off valve; 44. Solenoid ball valve; 45. Accumulator; 46. Pressure sensor; 47. Pressure measuring connector; 5. Cavity. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of an anti-fall hydraulic cylinder proposed by this utility model is provided in conjunction with the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only for the purpose of conveniently and clearly illustrating the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0024] Please see Figures 1 to 6 The anti-fall hydraulic cylinder of this embodiment includes a cylinder body 1 and a piston 2, the piston 2 being movably fitted into the cylinder body 1. The hydraulic cylinder also includes a connecting member 3, the connecting member 3 having a passage group 31 inside, and the hydraulic cylinder also includes functional components 4, the functional components 4 being disposed on the connecting member 3 and all being connected to the cylinder body 1 via the passage group 31, thereby realizing functional control during the operation of the hydraulic cylinder.

[0025] Furthermore, the cylinder body 1 has a limiting block 11 at the end away from the connecting member 3, and a boss 12 is formed on the end face of the cylinder body 1 near the connecting member 3, with a recess 13 inside the boss 12. The piston 2 has a pressure plate 21 at one end inside the cylinder body 1, and the pressure plate 21 is movably located between the limiting block 11 and the boss 12. Through the movement of the piston 2 inside the cylinder body 1, the thrust is transmitted to the external load.

[0026] Furthermore, the passage group 31 includes a first pipe 311 and a second pipe 312. One end of the first pipe 311 is connected to the recess 13, and the other end of the first pipe 311 is connected to the second pipe 312. That is, the oil enters the first pipe 311 from the recess 13 in the cylinder 1 and is further diverted through the second pipe 312.

[0027] Furthermore, the functional component 4 includes an explosion-proof valve 41, a safety valve 42, a shut-off valve 43, and a solenoid ball valve 44. Each of these components has one end connected to the second pipeline 312. In this embodiment, the explosion-proof valve 41 controls the oil circuit flow, providing overpressure protection and preventing the risk of explosion when the system pressure exceeds a set threshold. The safety valve 42 prevents equipment slippage caused by the unexpected retraction of the piston 2 due to the load's own weight. The shut-off valve 43 allows manual adjustment of the valve opening to limit the oil flow rate, assisting in controlling the movement of the piston 2. The solenoid ball valve 44 controls the oil circuit flow and works in conjunction with the explosion-proof valve 41 to achieve cylinder safety protection.

[0028] Furthermore, the passage group 31 also includes a third pipe 313, and the functional component 4 also includes an accumulator 45. One end of the third pipe 313 is connected to the electromagnetic ball valve 44, and the other end of the third pipe 313 is connected to the accumulator 45. In this embodiment, the accumulator 45 is used for energy storage and release, buffering and shock absorption, and as an emergency power source. The passage group 31 also includes a fourth pipe 314, and the functional component 4 also includes a pressure sensor 46. One end of the fourth pipe 314 is partially connected to the recess 13 and partially connected to the boss 12, and the other end of the fourth pipe 314 is connected to the pressure sensor 46. In this embodiment, the pressure sensor 46 is used to detect whether the real-time pressure of the oil circuit reaches a safety threshold to trigger an alarm. The passage group 31 also includes a fifth pipe 315, and the functional component 4 also includes a pressure testing connector 47. One end of the fifth pipe 315 is connected to the pressure sensor 46, and the other end of the fifth pipe 315 is connected to the pressure testing connector 47. In this embodiment, the pressure testing connector 47 is used to accurately detect the pressure value in the oil circuit, and can also add oil, release oil, and release air into the cylinder 1.

[0029] Furthermore, the outer wall of the limiting block 11 and the inner wall of the cylinder 1 form a cavity 5 along a first direction. In this embodiment, the first direction is the movement direction of the piston 2. The safety valve 42, the shut-off valve 43, and the solenoid ball valve 44 are all connected to the cavity 5 through pipes, thereby realizing the connection of the oil circuit. The position of the piston 2 can be restricted by controlling the volume of the oil body on both sides of the pressure plate 21.

[0030] Furthermore, the piston 2 is provided with a first shaft hole 22 at the end away from the cylinder 1, and the connector 3 is provided with a second shaft hole 32. Through the provision of the first shaft hole 22 and the second shaft hole 32, combined with the connection of the rotating shaft to the support of the external lifting platform, auxiliary support for the lifting platform and other equipment is achieved, thereby improving safety performance.

[0031] Specifically, when the lifting platform with the anti-fall cylinder of this embodiment moves up and down at normal speed, the solenoid ball valve 44 is not energized, and the oil circuit is connected. At this time, the pressure sensor 46 detects the oil pressure in the oil circuit in real time. When the lifting platform stops, the solenoid ball valve 44 is energized, and the lifting platform stops in its original position. When the lifting platform suddenly stalls and descends during normal operation, the explosion-proof valve 41 locks, the pressure sensor 46 suddenly increases, and the solenoid ball valve 44 is energized and closed. When the lifting platform is locked and cannot descend, the shut-off valve 43 can be opened to manually connect the oil circuit, allowing the lifting platform to descend by its own weight.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An anti-drop ram, characterized by: The hydraulic cylinder includes a cylinder body and a piston, the piston being movably fitted into the cylinder body; the hydraulic cylinder also includes a connecting member, the connecting member having a passage group inside; the hydraulic cylinder also includes functional components, the functional components being disposed on the connecting member and all being connected to the cylinder body via the passage group. The cylinder body has a limiting block at the end away from the connector, and a boss is formed on the end face of the cylinder body near the connector, with a recessed portion inside the boss. The passage group includes a first pipe and a second pipe, one end of the first pipe is connected to the recess, and the other end of the first pipe is connected to the second pipe; The functional components include an explosion-proof valve, a safety valve, a shut-off valve, and a solenoid ball valve, with one end of each of the explosion-proof valve, the safety valve, the shut-off valve, and the solenoid ball valve connected to the second pipeline.

2. An anti-drop ram as claimed in claim 1, characterized in that: The piston has a pressure plate at one end of the cylinder body, and the pressure plate is movably located between the limiting block and the boss.

3. An anti-drop ram as claimed in claim 2, characterized in that: The passage group also includes a third pipeline, and the functional component also includes an energy storage device. One end of the third pipeline is connected to the electromagnetic ball valve, and the other end is connected to the energy storage device.

4. A fall-preventing ram as claimed in claim 3, characterized in that: The passage group also includes a fourth pipe, and the functional component also includes a pressure sensor. One end of the fourth pipe is partially connected to the recess and partially connected to the boss, and the other end is connected to the pressure sensor.

5. A fall-preventing ram as claimed in claim 4, characterized in that: The pathway group also includes a fifth pipeline, and the functional component also includes a pressure testing connector. One end of the fifth pipeline is connected to the pressure sensor, and the other end is connected to the pressure testing connector.

6. A fall-preventing ram as claimed in claim 5, characterized in that: The outer wall of the limiting block and the inner wall of the cylinder form a cavity along the first direction; the safety valve, the shut-off valve and the solenoid ball valve are also connected to the cavity via pipelines.

7. A fall-preventing ram as claimed in claim 6, characterized in that: The piston is provided with a first shaft hole at the end away from the cylinder, and the connector is provided with a second shaft hole.

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