Fast and slow speed switching system of compression oil cylinder
By introducing solenoid valves and pressure sensors into the compression cylinder, the fast and slow movement of automatically switching the running speed according to the load changes is achieved, and the problem of difficulty in adjusting the speed under different loads of existing compression cylinders is solved, which improves the working efficiency and Provides high pressure protection.
Patent Information
- Application Number
- CN202420921810.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-29
AI Technical Summary
Existing compression cylinders are difficult to adjust their operating speed under different loads, resulting in limited working efficiency.
A fast and slow switching system for compression oil cylinders is designed, using components such as compression oil cylinders and solenoid valves, pressure sensors, constant pressure valves, pressure relief valves and switches. The pressure changes are monitored through the pressure sensor, and the switching of hydraulic pumps and solenoid valves is controlled to achieve Move fast or slow, and provide pressure relief protection when pressure is too high.
It realizes automatic switching of operating speed according to load changes, improves the working efficiency of the compressed oil cylinder, and protects the oil cylinder at high pressure to extend the service life of the equipment.
Smart Images
Figure CN222334143U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of compression cylinder systems, and in particular to a compression cylinder fast-slow speed switching system. Background Art
[0002] A compression cylinder is a cylinder that can convert hydraulic energy into mechanical energy to achieve compression. The compression cylinder is an important hydraulic actuator. It drives the piston to move through the pressure of the hydraulic oil, thereby achieving the compression function. It has the advantages of compact structure, large output force, and stable performance. During the working process, the cylinder can achieve fast or slow movement switching according to different control signals and working conditions to meet various working requirements. The quality and performance of the compression cylinder directly affect the operating efficiency and reliability of the entire equipment. The use of compression cylinders is very extensive. Common application scenarios include: industrial machinery, such as presses, punches, etc., used to provide compression force to complete processing tasks; engineering machinery, such as cranes, excavators, etc., used for lifting, loading and unloading and other actions; metallurgical equipment, plays a role in steel rolling, forging and other processes; plastic machinery, used in equipment such as injection molding machines, to achieve mold closing and other actions; energy field, such as applications in pumping units. Aerospace, also used in some specific equipment.
[0003] The compression cylinder has different pressure states under different loads. It is not easy to adjust the operating speed of the existing compression cylinder according to different load states, which limits the working efficiency of the compression cylinder. This project aims to develop a fast and slow speed switching system for the compression cylinder to solve the problem. Utility Model Content
[0004] In view of at least one of the above technical problems, the present application provides a compression cylinder fast and slow speed switching system, which adopts the following technical solution to solve the problem.
[0005] According to one aspect of the present application, a compression cylinder fast-slow speed switching system is provided, comprising a compression cylinder, a rodless oil chamber of the compression cylinder is connected to a second solenoid valve, an oil circuit connected between the compression cylinder and the second solenoid valve is connected to a fourth solenoid valve, a rod oil chamber of the compression cylinder is connected to a third solenoid valve, and the third solenoid valve is connected to a first solenoid valve;
[0006] The rodless oil chamber of the compression cylinder is connected with a pressure sensor a.
[0007] The utility model is further configured that a constant pressure valve is connected between the rodless oil chamber of the compression oil cylinder and the third solenoid valve.
[0008] The utility model is further configured that the rodless oil chamber of the compression oil cylinder is connected with a pressure relief valve.
[0009] The utility model is further configured that the first solenoid valve and the third solenoid valve are connected to the first switch and the second switch respectively.
[0010] The utility model is further configured that the fourth solenoid valve is connected to a delay switch.
[0011] The utility model is further configured that the first solenoid valve and the second solenoid valve are connected to a hydraulic pump, and the hydraulic pump is connected to a unloading solenoid valve and a pressure sensor b.
[0012] This application has the following technical effects:
[0013] The pressure sensor a of the utility model can be controlled accordingly according to the change of pressure: when the pressure reaches 10MPa, the hydraulic pump unloads the load and can be switched to fast action; when the pressure reaches 12MPa, the third solenoid valve is energized and can be switched to slow action; when the pressure of the rodless oil chamber of the compression cylinder rises to 30MPa, the fourth solenoid valve is energized to release the pressure to protect the pressure of the rodless oil chamber of the compression cylinder from being too high. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a system structure diagram of this application.
[0016] Reference numerals:
[0017] 1. First switch; 2. Pressure relief valve; 3. Delay switch; 4. Constant pressure valve; 5. Second switch; 6. Pressure sensor a; 7. First solenoid valve; 8. Second solenoid valve; 9. Third solenoid valve; 10. Fourth solenoid valve; 11. Compression cylinder. DETAILED DESCRIPTION
[0018] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0019] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.
[0020] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.
[0021] In this embodiment of the present application, Figure 1 As shown, a compression cylinder fast-slow speed switching system is provided, including a compression cylinder 11, a rodless oil chamber of the compression cylinder 11 is connected to a second solenoid valve 8, the second solenoid valve 8 is used to control the medium-speed action of the compression cylinder 11, and the oil circuit connected between the compression cylinder 11 and the second solenoid valve 8 is connected to a fourth solenoid valve 10, the fourth solenoid valve 10 is connected to a delay switch 3, the delay switch 3 can control the action of the fourth solenoid valve 10, the rod oil chamber of the compression cylinder 11 is connected to a third solenoid valve 9, the third solenoid valve 9 is connected to a first solenoid valve 7, the first solenoid valve 7 and the third solenoid valve 9 are respectively connected to a first switch 1 and a second switch 5, the first switch 1 and the second switch 5 can respectively control the actions of the first solenoid valve 7 and the third solenoid valve 9, the fourth solenoid valve 10 is used to release pressure when the pressure of the rodless oil chamber of the compression cylinder 11 rises to 30MPa, to prevent the pressure of the rodless oil chamber of the compression cylinder 11 from being too high, and to play a protective role, the third solenoid valve 9 is used to control the slow action of the compression cylinder 11.
[0022] The rodless oil chamber of the compression cylinder 11 is connected to a pressure sensor a6 for detecting the pressure of the rodless oil chamber of the compression cylinder 11.
[0023] A constant pressure valve 4 is connected between the rodless oil chamber of the compression cylinder 11 and the third solenoid valve 9. The constant pressure valve 4 allows the system to be used below 31.5 MPa and releases pressure when it exceeds 31.5 MPa.
[0024] The rodless oil chamber of the compression oil cylinder 11 is connected to a pressure relief valve 2, and the pressure relief valve 2 and the constant pressure valve 4 work together to maintain the pressure of the rodless oil chamber.
[0025] The first solenoid valve 7 and the second solenoid valve 8 are connected to a hydraulic pump, and the hydraulic pump is connected to a unloading solenoid valve and a pressure sensor b. The pressure sensor b is used to protect the pump. When the set value is exceeded, the unloading solenoid valve opens to release the pressure to prevent the hydraulic pump from being damaged due to excessive pressure.
[0026] Working principle:
[0027] When the compression cylinder 11 is to be retracted, the power supply of the first switch 1 is firstly cut off, and then the delay switch 3 is energized for 1 second, and then the first solenoid valve 7 and the third solenoid valve 9 are energized at the same time, so that the cylinder is retracted.
[0028] During the fast, medium and slow movements of the compression cylinder 11, the pressure sensor a6 performs corresponding control according to the change in pressure: when the pressure reaches 10MPa, the hydraulic pump unloads the load and can be switched to fast movement; when the pressure reaches 12MPa, the third solenoid valve 9 is energized and can be switched to slow movement, and when the second solenoid valve 8 is started, it can be switched to medium speed movement; when the pressure in the rodless oil chamber of the compression cylinder 11 rises to 30MPa, the fourth solenoid valve 10 is energized to release the pressure to protect the pressure in the rodless oil chamber of the compression cylinder 11 from being too high.
[0029] The pressure sensor b is set to protect the hydraulic pump. When the pressure reaches 31MPa, the motor of the hydraulic pump stops working, and the oil in the rod oil chamber of the compression cylinder 11 flows back to the rodless oil chamber. The constant pressure valve 4 and the pressure relief valve 2 can maintain the pressure of the rodless oil chamber, and the pressure relief valve 2 can be used in the system below 31.5MPa.
[0030] The above are only preferred embodiments of the present application, and do not constitute any formal limitation on the present application. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present application without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent changes made according to the shape, structure and principle of the present application without departing from the content of the technical solution of the present application should be included in the protection scope of the present application.
Claims
1. A compression cylinder fast and slow speed switching system, characterized in that: It comprises a compression oil cylinder (11), wherein the rodless oil chamber of the compression oil cylinder (11) is connected to a second solenoid valve (8), and the oil circuit connecting the compression oil cylinder (11) and the second solenoid valve (8) is connected to a fourth solenoid valve (10), the rod oil chamber of the compression oil cylinder (11) is connected to a third solenoid valve (9), and the third solenoid valve (9) is connected to the first solenoid valve (7); The rodless oil chamber of the compression oil cylinder (11) is connected to a pressure sensor a (6).
2. A compression cylinder speed switching system according to claim 1, characterized in that: A constant pressure valve (4) is connected between the rodless oil chamber of the compression oil cylinder (11) and the third solenoid valve (9).
3. A compression cylinder speed switching system according to claim 1, characterized in that: The rodless oil chamber of the compression oil cylinder (11) is connected to a pressure relief valve (2).
4. A compression cylinder speed switching system according to claim 1, characterized in that: The first solenoid valve (7) and the third solenoid valve (9) are connected to the first switch (1) and the second switch (5) respectively.
5. The compression cylinder speed switching system according to claim 1, characterized in that: The fourth solenoid valve (10) is connected to a delay switch (3).
6. A compression cylinder speed switching system according to claim 1, characterized in that: The first solenoid valve (7) and the second solenoid valve (8) are connected to a hydraulic pump, and the hydraulic pump is connected to a unloading solenoid valve and a pressure sensor b.