Winding cable control valve for rotation

Abstract

The utility model discloses a cable winding control valve for rotation, which belongs to the technical field of mechanical engineering and comprises a valve bank shell, and a tensioning overflow valve, a cable winding overflow valve and a two-position four-way hydraulic control valve are respectively mounted on the same side wall of the valve bank shell. A one-way valve is installed on the side wall, close to the tensioning overflow valve, of the valve set shell, a port P is formed in the position of the one-way valve, a port Y located in the side wall of the valve set shell is formed in one side of the port P, and a port T and a port B are formed in the side wall, away from the port Y, of the valve set shell respectively. Winding, excessive stretching or loosening are effectively avoided, the service life is prolonged, and the reliability of equipment operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, and more particularly to a cable winding control valve for rotation. Background Art

[0002] Mechanical rotary equipment is a device that enables a mechanical part to rotate about its centerline. It typically consists of a drive unit, a transmission, and a slewing bearing. These components work together to accomplish cargo transport tasks or other work cycles. Depending on the transmission method, mechanical rotary equipment can be categorized into three types: mechanical, electric, and hydraulic. Each type has its own unique advantages and applications. For example, mechanical transmission offers high stability, electric transmission offers fast response, and hydraulic transmission provides high torque and excellent speed regulation.

[0003] In numerous mechanical rotary equipment, such as cranes and tower cranes, cable winding and release require precise control to ensure proper operation and cable safety. Existing cable winding control devices often suffer from low control accuracy, slow response, and the risk of cable entanglement or overstretching, which impacts equipment efficiency and reliability. Therefore, we propose a rotary cable winding control valve to address these issues. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In response to the problems existing in the prior art, the purpose of the utility model is to provide a cable winding control valve for rotation, which can accurately, quickly and stably control the winding and unwinding of the cable winding control valve, effectively avoid entanglement, excessive stretching or relaxation, extend the service life and improve the reliability of equipment operation.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the present invention adopts the following technical solutions.

[0008] A cable reel control valve for rotation, comprising a valve group housing, wherein a tensioning relief valve, a cable reel relief valve and a two-position four-way hydraulic control valve are respectively installed on the same side wall of the valve group housing;

[0009] A one-way valve is installed on the side wall of the valve group housing close to the tensioning relief valve;

[0010] The one-way valve is provided with a P port;

[0011] A Y port is provided on one side of the P port and is located on the side wall of the valve group housing;

[0012] The side walls of the valve group housing away from the Y port are respectively provided with a T port and a B port.

[0013] Furthermore, the tensioning relief valve is used to provide a constant tensioning force on the cable during the cable releasing process.

[0014] Furthermore, the cable relief valve is used to provide a safe pressure cut-off.

[0015] Furthermore, the one-way valve reversely cuts off the oil in the P port during operation.

[0016] Furthermore, the two-position four-way hydraulic control valve is used for logic control action to realize oil supply to the P port.

[0017] Furthermore, the B port is used to connect the motor, and the motor works in the forward direction to wind the cable. During the winding process, the overpressure of the Y port hydraulic control force will act on the two-position four-way hydraulic control valve to change direction, and the Y port oil will be unloaded at the set pressure of the tensioning relief valve.

[0018] Furthermore, the motor cable is used as a hydraulic pump, the hydraulic oil is sucked in from the corresponding T port, the two-position four-way hydraulic control valve switches positions, and the pressure of the Y port is unloaded through the tensioning relief valve to complete the cycle.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] This solution can accurately, quickly and stably control the winding and unwinding of the cable control valve, effectively avoiding entanglement, excessive stretching or relaxation, extending the service life and improving the reliability of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0024] Figure 3 This is a schematic diagram of the one-way valve structure of the utility model

[0025] Figure 4 This is a schematic side view of the valve group housing of the present invention;

[0026] Figure 5 It is a top view schematic diagram of the utility model;

[0027] Figure 6 This is a schematic diagram of the system control of the present utility model.

[0028] Description of the numbers in the figure:

[0029] 1. Tensioning relief valve; 2. Cable winding relief valve; 3. Two-position four-way hydraulic control valve; 4. Check valve; 5. Valve group housing; 6. T port; 7. P port; 8. Y port; 9. B port. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Example:

[0032] See also Figure 1-6 A rotary cable control valve comprises a valve group housing 5, on the same side wall of which a tensioning relief valve 1, a cable relief valve 2 and a two-position four-way hydraulic control valve 3 are respectively installed;

[0033] A one-way valve 4 is installed on the side wall of the valve group housing 5 close to the tensioning relief valve 1;

[0034] A P port 7 is provided at the one-way valve 4;

[0035] A Y port 8 is provided on the side wall of the valve group housing 5 on one side of the P port 7;

[0036] The side wall of the valve group housing 5 away from the Y port 8 is respectively provided with a T port 6 and a B port 9.

[0037] The tension relief valve 1 is used to provide a constant tension in the cable during the cable release process.

[0038] The cable relief valve 2 is used to provide a safety pressure cut-off.

[0039] During operation, the one-way valve 4 reversely cuts off the oil in the P port 7.

[0040] The two-position four-way hydraulic control valve 3 is used for logic control action to realize oil supply to the P port 7.

[0041] Port B 9 is used to connect the motor, and the motor works in the forward direction to wind the cable. During the winding process, the overpressure hydraulic control force of port Y 8 will act on the two-position four-way hydraulic control valve 3 to change direction, and the oil in port Y 8 will be unloaded at the set pressure of the tensioning relief valve 1.

[0042] The motor cable is used as a hydraulic pump, and the hydraulic oil is sucked in from the T port 6. The two-position four-way hydraulic control valve 3 switches its position, and the pressure of the Y port 8 is unloaded through the tensioning relief valve 1 to complete the cycle.

[0043] During the cable release process, the tensioning relief valve 1 provides constant cable tension to prevent cable accumulation due to insufficient tension and cable breakage due to excessive tension. The cable reeling relief valve 2 provides a safety pressure cutoff to prevent cable breakage due to heavy load during reeling. The one-way valve 4 reverses the oil flow to port P 7 during operation. The two-position four-way hydraulic control valve 3 performs a logical control action here, ensuring oil supply to port P 7. The motor at port B 9 operates in the forward direction to reel the cable. If overpressure is encountered during reeling, the hydraulic control force at port Y 8 will force the two-position four-way hydraulic control valve 3 to reverse direction. The oil in port Y 8 will partially unload at the set pressure of the tensioning relief valve 1 to prevent cable breakage. During cable release, the cable drag motor reverses, and the motor now acts as a hydraulic pump. Hydraulic oil is sucked in from port T 6, and the two-position four-way hydraulic control valve 3 switches position. The pressure at port Y 8 is unloaded through the tensioning relief valve 1, completing the circulation. The tensioning relief valve 1 acts as a back-pressure valve here, ensuring smooth cable release.

[0044] When in use: The rotary cable winding control valve designed by the invention is composed of a tensioning relief valve 1, a cable winding relief valve 2, a two-position four-way hydraulic control valve 3, and a one-way valve 4. During the cable release process, the tensioning relief valve 1 provides constant cable tension to prevent cable accumulation due to insufficient tension and cable breakage due to excessive tension. The cable reeling relief valve 2 provides a safety pressure cutoff to prevent cable breakage due to heavy load during reeling. The one-way valve 4 reverses the oil flow to port P 7 during operation. The two-position four-way hydraulic control valve 3 performs a logical control action here, ensuring oil supply to port P 7. The motor at port B 9 operates in the forward direction to reel the cable. If overpressure is encountered during reeling, the hydraulic control force at port Y 8 will force the two-position four-way hydraulic control valve 3 to reverse direction. The oil in port Y 8 will partially unload at the set pressure of the tensioning relief valve 1 to prevent cable breakage. During cable release, the cable drag motor reverses, and the motor now acts as a hydraulic pump. Hydraulic oil is sucked in from port T 6, and the two-position four-way hydraulic control valve 3 switches position. The pressure at port Y 8 is unloaded through the tensioning relief valve 1, completing the circulation. The tensioning relief valve 1 acts as a back-pressure valve here, ensuring smooth cable release.

[0045] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A cable-wound control valve for rotation, comprising a valve block housing (5), characterized in that: A tensioning relief valve (1), a cable relief valve (2) and a two-position four-way hydraulic control valve (3) are respectively installed on the same side wall of the valve group housing (5); A one-way valve (4) is installed on the side wall of the valve group housing (5) close to the tensioning relief valve (1); The one-way valve (4) is provided with a P port (7); A Y port (8) is provided on one side of the P port (7) and is located on the side wall of the valve group housing (5); The side walls of the valve group housing (5) away from the Y port (8) are respectively provided with a T port (6) and a B port (9).

2. A rotary cable control valve according to claim 1, characterized in that: The tensioning relief valve (1) is used to provide a constant tensioning force on the cable during the cable-releasing process.

3. The rotary cable control valve according to claim 1, characterized in that: The cable relief valve (2) is used to provide a safe pressure cut-off.

4. The cable-winding control valve for rotation according to claim 1, characterized in that: The one-way valve (4) reversely blocks the oil in the P port (7) during operation.

5. The cable-winding control valve for rotation according to claim 1, characterized in that: The two-position four-way hydraulic control valve (3) is used for logic control action to realize oil supply to the P port (7).

6. The rotary cable control valve according to claim 1, characterized in that: The B port (9) is used to connect to the motor, and the motor works in the forward direction to wind the cable. During the winding process, the overpressure hydraulic control force of the Y port (8) will act on the two-position four-way hydraulic control valve (3) to change direction, and the oil in the Y port (8) will be unloaded at the set pressure of the tensioning relief valve (1).

7. The cable-winding control valve for rotation according to claim 6, characterized in that: The motor cable-releasing device is used as a hydraulic pump, and hydraulic oil is sucked in from the corresponding T port (6). The two-position four-way hydraulic control valve (3) switches positions, and the pressure of the Y port (8) is unloaded through the tensioning relief valve (1) to complete the cycle.

Images