Hydraulic oil cylinder protection device

Abstract

The utility model discloses a hydraulic oil cylinder protection device, and belongs to the technical field of hydraulic oil cylinders, the hydraulic oil cylinder protection device comprises a hydraulic oil cylinder, an oil supply device, a protection device, an alarm device and a controller, the hydraulic oil cylinder comprises a cylinder body, a telescopic shaft, a rodless cavity and a rod cavity, and the rodless cavity and the rod cavity are formed in the cylinder body; the device is novel in design and ingenious, the pressure sensor is arranged on the telescopic shaft of the hydraulic oil cylinder, the pressure sensor can sense force borne by the telescopic shaft in real time, when the sensed force exceeds the set safety limit, the pressure sensor can send a signal to the control system, and after the control system receives the signal, the control system controls the hydraulic oil cylinder to work. When the oil way is cut off, the electromagnetic valve is immediately linked to cut off the oil way and stop pressurizing, the pressure in the oil cylinder is gradually released through the pressure release valve, and therefore the telescopic shaft is effectively protected against damage, in addition, the control system is further provided with an alarm device, an alarm is given out while the oil way is cut off, an operator is reminded to handle in time, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] This application relates to the field of hydraulic cylinder technology, and in particular to a hydraulic cylinder protection device. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device and has no transmission backlash, resulting in smooth movement. Therefore, it is widely used in the hydraulic systems of various machines. The output force of a hydraulic cylinder is directly proportional to the effective area of ​​the piston and the pressure difference between its two sides. A hydraulic cylinder basically consists of a cylinder barrel and cylinder head, a piston and piston rod, a sealing device, a cushioning device, and a venting device. The cushioning and venting devices are optional depending on the specific application, while the other devices are essential.

[0003] Hydraulic cylinders, as important actuators in hydraulic systems, are widely used in various mechanical equipment. However, during the use of hydraulic cylinders, if the thrust exceeds the bearing limit of the telescopic shaft, it can easily lead to damage to the telescopic rod. This not only affects the normal operation of the equipment but may also pose safety hazards.

[0004] Currently, some hydraulic cylinders are designed with simple mechanical limit devices, but these devices often only work when the telescopic rod reaches its limit position. They cannot cut off the oil circuit in time to protect the telescopic rod when the thrust is too large. Therefore, existing hydraulic cylinder protection devices cannot respond to excessive thrust in time, thus failing to effectively prevent damage to the telescopic rod.

[0005] Therefore, this application proposes a hydraulic cylinder protection device. Utility Model Content

[0006] This application proposes a hydraulic cylinder protection device to solve the problems mentioned in the background art. By installing a pressure sensor on the telescopic shaft of the hydraulic cylinder, the pressure sensor can sense the force on the telescopic shaft in real time. When the sensed force exceeds the set safety limit, the pressure sensor will send a signal to the control system. After receiving the signal, the control system will immediately activate the solenoid valve to cut off the oil circuit, stop the pressurization, and gradually release the pressure in the cylinder through the pressure relief valve, thereby effectively protecting the telescopic shaft from damage. In addition, the control system is also equipped with an alarm device, which issues an alarm at the same time as cutting off the oil circuit, reminding the operator to deal with it in time, greatly improving the practicality of the device.

[0007] To achieve the above objectives, this application adopts the following technical solution:

[0008] A hydraulic cylinder protection device includes a hydraulic cylinder, an oil supply device, a protection device, an alarm device, and a controller. The hydraulic cylinder includes a cylinder body, a telescopic shaft, a rodless chamber, and a rod chamber. The rodless chamber and the rod chamber are opened inside the cylinder body. The telescopic shaft is slidably connected inside the rod chamber, and one end of the telescopic shaft extends to the outside of the cylinder body. The controller includes a control system, a sensing module, and an alarm module.

[0009] In a preferred embodiment, the sensing module and the alarm module are electrically connected to the control system via wires, and a control panel is embedded in the surface of the controller;

[0010] By setting up sensing and alarm modules, these modules can be combined with microcontrollers or embedded systems to realize intelligent control systems, thereby improving the practicality of the device.

[0011] In a preferred embodiment, the controller has a set of seven speaker holes located inside and above the control panel.

[0012] By incorporating speaker holes—essential components for sound generation—which are typically located externally, users can directly hear the sound emanating from the device, thus enhancing its usability.

[0013] In a preferred embodiment, the hydraulic cylinder is provided with an oil supply device, which includes an oil supply pump valve and a solenoid valve, both of which are mounted on the oil supply device.

[0014] Upon receiving a signal, the control system will immediately activate the solenoid valve to cut off the oil circuit, stop pressurization, and gradually release the pressure in the cylinder through the pressure relief valve, effectively protecting the telescopic shaft from damage and thus improving the practicality of the device.

[0015] In a preferred embodiment, a protective device is fixedly connected to one end of the telescopic shaft located outside the cylinder body. The protective device includes a mounting cavity and a pressure sensor, and the mounting cavity is formed inside the protective device.

[0016] By creating an installation cavity in the protective device and placing the pressure sensor inside the cavity, the pressure sensor body is protected, its service life is extended to a certain extent, and the practicality of the device is improved.

[0017] In a preferred embodiment, a pressure sensor is installed inside the mounting cavity, and the pressure sensor is electrically connected to the sensing module;

[0018] By setting up a pressure sensor, the pressure signal is sensed by the pressure-sensitive element and converted into a usable electrical signal output according to a certain rule. This allows for real-time sensing of the force on the telescopic rod, thereby improving the practicality of the device.

[0019] In a preferred embodiment, the controller is equipped with an alarm device, which includes a mounting block, a housing, and an alarm light. The mounting block is mounted on the controller, and the mounting block has multiple fixing bolts connected internally by threads, with the bottom end of each fixing bolt extending into the controller.

[0020] By using mounting blocks and fixing bolts, the alarm device can be installed on the controller to receive alarm signals in a timely manner, thereby improving the device's practicality.

[0021] In a preferred embodiment, a housing is fixedly connected to the top of the mounting block, and an alarm light is provided on the top of the mounting block and inside the housing, and the alarm light is electrically connected to the alarm module.

[0022] By installing alarm devices, operators can be promptly alerted to handle abnormal situations, reducing losses caused by equipment failures and thus improving the practicality of the device.

[0023] The beneficial effects of this application are:

[0024] 1. This hydraulic cylinder protection device, by installing a pressure sensor on the telescopic shaft of the hydraulic cylinder, can sense the force on the telescopic shaft in real time. When the sensed force exceeds the set safety limit, the pressure sensor will send a signal to the control system. After receiving the signal, the control system will immediately activate the solenoid valve to cut off the oil circuit, stop the pressurization, and gradually release the pressure in the cylinder through the pressure relief valve, thereby effectively protecting the telescopic shaft from damage and greatly improving the practicality of the device;

[0025] 2. This hydraulic cylinder protection device, by setting up an alarm device, issues an alarm while cutting off the oil circuit. The alarm device can promptly remind operators to handle abnormal situations, reduce losses caused by equipment failure, and greatly improve the practicality of the device. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main body of the device in this application;

[0027] Figure 2 This is a schematic diagram of the internal structure of the hydraulic cylinder of the device described in this application;

[0028] Figure 3 This is a schematic diagram of the internal structure of the controller of the device in this application.

[0029] The following are the labeling elements in the diagram: 1. Cylinder body; 2. Telescopic shaft; 3. Rodless chamber; 4. Rod chamber; 5. Oil supply pump valve; 6. Solenoid valve; 7. Controller; 8. Control system; 9. Sensor module; 10. Alarm module; 11. Control panel; 12. Speaker port; 13. Protection device; 14. Mounting cavity; 15. Pressure sensor; 16. Alarm device; 17. Housing; 18. Alarm light; 19. Mounting block; 20. Fixing bolt; 21. Hydraulic cylinder; 22. Oil supply device. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0031] Reference Figure 1-3 A hydraulic cylinder protection device includes a hydraulic cylinder 21, an oil supply device 22, a protection device 13, an alarm device 16, and a controller 7. The hydraulic cylinder 21 includes a cylinder body 1, a telescopic shaft 2, a rodless chamber 3, and a rod chamber 4. The rodless chamber 3 and the rod chamber 4 are provided inside the cylinder body 1. The telescopic shaft 2 is slidably connected inside the rod chamber 4, and one end of the telescopic shaft 2 extends to the outside of the cylinder body 1.

[0032] The controller 7 includes a control system 8, a sensing module 9, and an alarm module 10. The sensing module 9 and the alarm module 10 are electrically connected to the control system 8 via wires. A control panel 11 is embedded in the surface of the controller 7. By setting up the sensing module 9 and the alarm module 10, the sensing module 9 and the alarm module 10 can be combined with a microcontroller or an embedded system to realize an intelligent control system, thereby improving the practicality of the device.

[0033] The controller 7 has a set of seven speaker holes 12 inside and above the control panel 11. By setting the speaker holes 12, which are important parts for sound generation, they are usually located outside the device, so that users can directly hear the sound emitted from the device, thereby improving the practicality of the device.

[0034] The hydraulic cylinder 21 is equipped with an oil supply device 22, which includes an oil supply pump valve 5 and a solenoid valve 6. Both the oil supply pump valve 5 and the solenoid valve 6 are installed on the oil supply device 22. After receiving a signal, the control system 8 will immediately activate the solenoid valve 6 to cut off the oil circuit, stop the pressurization, and gradually release the pressure in the cylinder through the pressure relief valve, effectively protecting the telescopic shaft 2 from damage, thereby improving the practicality of the device.

[0035] A protective device 13 is fixedly connected to one end of the telescopic shaft 2 located outside the cylinder body 1. The protective device 13 includes a mounting cavity 14 and a pressure sensor 15. The mounting cavity 14 is opened inside the protective device 13. By opening the mounting cavity 14 in the protective device 13, the pressure sensor 15 is placed in the cavity, which protects the main body of the pressure sensor 15 and extends its service life to a certain extent, thereby improving the practicality of the device.

[0036] A pressure sensor 15 is installed inside the mounting cavity 14, and the pressure sensor 15 is electrically connected to the sensing module 9. By setting the pressure sensor 15, the pressure signal is sensed by the pressure-sensitive element, and the pressure signal is converted into a usable electrical signal output according to a certain rule. This allows for real-time sensing of the force on the telescopic rod, thereby improving the practicality of the device.

[0037] An alarm device 16 is installed on the controller 7. The alarm device 16 includes a mounting block 19, a housing 17, and an alarm light 18. The mounting block 19 is installed on the controller 7. Multiple fixing bolts 20 are threaded inside the mounting block 19, and the bottom end of each fixing bolt 20 extends into the controller 7. By setting the mounting block 19 and fixing bolts 20, the alarm device 16 is installed on the controller 7 to receive alarm signals in a timely manner, thereby improving the practicality of the device.

[0038] The top of the mounting block 19 is fixedly connected to the outer shell 17. An alarm light 18 is installed on the top of the mounting block 19 and inside the outer shell 17. The alarm light 18 is electrically connected to the alarm module 10. By setting the alarm device 16, the alarm device 16 can promptly remind the operator to handle abnormal situations, reduce the losses caused by equipment failure, and thus improve the practicality of the device.

[0039] Working principle: By installing a pressure sensor 15 on the telescopic shaft 2 of the hydraulic cylinder 21, the pressure sensor 15 can sense the force on the telescopic shaft 2 in real time. When the sensed force exceeds the set safety limit, the pressure sensor 15 will send a signal to the control system 8. After receiving the signal, the control system 8 will immediately activate the solenoid valve 6 to cut off the oil circuit, stop the pressurization, and gradually release the pressure in the cylinder through the pressure relief valve, thereby effectively protecting the telescopic shaft 2 from damage. In addition, the control system 8 is also equipped with an alarm device 16, which will issue an alarm at the same time as cutting off the oil circuit to remind the operator to deal with it in time.

[0040] By sensing the force on the telescopic shaft 2 in real time and cutting off the oil circuit in time, this technology can effectively prevent damage to the telescopic shaft 2 caused by excessive thrust, improve the service life and safety of the hydraulic cylinder 21, and at the same time, the alarm device 16 can promptly remind the operator to handle abnormal situations and reduce losses caused by equipment failure.

[0041] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and the inventive concept of this application, should be included within the scope of protection of this application.

Claims

1. A hydraulic cylinder protection device comprising a hydraulic cylinder (21), an oil supply device (22), a protection device (13), an alarm device (16) and a controller (7), characterized in that, The hydraulic cylinder (21) includes a cylinder body (1), a telescopic shaft (2), a rodless cavity (3) and a rod cavity (4), the inside of the cylinder body (1) is provided with the rodless cavity (3) and the rod cavity (4), the telescopic shaft (2) is slidably connected in the rod cavity (4), and one end of the telescopic shaft (2) extends to the outside of the cylinder body (1); the controller (7) comprises a control system (8), a sensing module (9) and an alarm module (10).

2. A hydraulic cylinder protection device according to claim 1, characterized in that The sensing module (9) and the alarm module (10) are electrically connected with the control system (8) through wires, and the surface of the controller (7) is embeddedly connected with a control panel (11).

3. A hydraulic ram protection device according to claim 2, wherein A group of loudspeaker holes (12) are arranged in the controller (7) and above the control panel (11).

4. The hydraulic cylinder protection device of claim 1, wherein The hydraulic cylinder (21) is provided with an oil supply device (22), the oil supply device (22) comprises an oil supply pump valve (5) and an electromagnetic valve (6), and the oil supply pump valve (5) and the electromagnetic valve (6) are arranged on the oil supply device (22).

5. The hydraulic cylinder protection device of claim 1, wherein One end of the telescopic shaft (2) located outside the cylinder body (1) is fixedly connected with a protection device (13), the protection device (13) comprises a mounting cavity (14) and a pressure sensor (15), and the mounting cavity (14) is arranged in the protection device (13).

6. A hydraulic ram protection device according to claim 5, wherein, The pressure sensor (15) is arranged in the mounting cavity (14) and electrically connected with the sensing module (9).

7. The hydraulic cylinder protection device of claim 1, wherein An alarm device (16) is arranged on the controller (7), the alarm device (16) comprises a mounting block (19), a shell (17) and an alarm lamp (18), the mounting block (19) is arranged on the controller (7), a plurality of fixing bolts (20) are threadedly connected in the mounting block (19), and the bottom end of each fixing bolt (20) extends into the controller (7).

8. A hydraulic ram protection device according to claim 7, wherein, The top of the mounting block (19) is fixedly connected with the shell (17), the top of the mounting block (19) and inside the shell (17) are provided with the alarm lamp (18), and the alarm lamp (18) is electrically connected with the alarm module (10).

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