Rotary proportional valve group for lifting appliance of hoisting equipment
By employing a rotary proportional valve assembly in the spreader, the pressure and flow of the hydraulic system are precisely adjusted, solving the problems of large impact, oil leakage, and poor micro-motion performance of the spreader's rotating mechanism. This achieves precise control and stable operation of the spreader, improving energy efficiency.
Patent Information
- Application Number
- CN202520563242.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The existing slewing mechanism has a slewing motor that experiences frequent and large impacts, serious oil leakage, and poor micro-motion performance, resulting in large impacts during slewing start and stop, making it difficult to achieve precise control.
The rotary proportional valve assembly includes components such as a valve block, a first proportional valve, a first directional valve, a balance valve, a second directional valve, a relief valve, and a pressure reducing valve. By precisely adjusting the pressure and flow of the hydraulic system, it achieves precise control of the actuator's movement and maintains the motor's stability when the load changes. An additional check valve prevents accidental rotation.
It achieves precise control of the spreader's movement, avoids energy waste, improves energy utilization efficiency, ensures the smooth operation of the spreader, and prevents accidental rotation accidents.
Smart Images
Figure CN223725004U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic transmission equipment technical field especially relates to a kind of rotary proportional valve group for hoisting equipment sling. BACKGROUND
[0002] In prior art, sling rotating mechanism is generally composed of hydraulic motor, speed reducer, brake, pinion and slewing bearing, and its working principle is as follows: when no rotating instruction is given, hydraulic valve block controls solenoid valve to be in power-off state, brake is braked, after rotating instruction is given, solenoid valve is powered, high-pressure hydraulic oil drives brake brake hoop to open, at the same time, hydraulic motor starts to work, motor power drives pinion to act after being decelerated by planetary reducer, pinion drives slewing bearing gear to rotate, high-strength bolt is connected between lower turntable and gear, thereby driving sling lower turntable, beam assembly to rotate as a whole.Sling can rotate 300°, when lifting container, front crane can work at an angle with container, after lifting, sling can be rotated to pass through relatively narrow passageway.Due to frequent slewing of slewing motor in sling rotating mechanism, impact is large, there is no oil supplement measure for slewing motor, and oil leakage phenomenon often occurs due to excessively high pressure of speed reducer, and sling slewing valve group is controlled by switch, sling has poor micro-motion performance, and slewing start-stop impact is large.
[0003] Based on this, the application provides a kind of rotary proportional valve group for hoisting equipment sling. UTILITY MODEL CONTENTS
[0004] To solve the above technical problems, the utility model provides a kind of rotary proportional valve group for hoisting equipment sling, including valve block, the valve block is equipped with oil inlet, oil return, first proportional valve, first reversing valve, balance valve, second reversing valve, first installation port and second installation port, first proportional valve is connected with oil inlet, one end of first reversing valve is connected with first proportional valve, the other end of first reversing valve is connected with one end of balance valve, the other end of balance valve is connected with external slewing motor through first installation port for controlling the motion speed of external slewing motor, one end of second reversing valve is connected with first proportional valve, the other end of second reversing valve is connected with external sling slewing motor through second installation port for controlling the opening and closing of external slewing motor brake, the oil return end of first proportional valve, first reversing valve, balance valve and second reversing valve is connected with oil return.
[0005] In some embodiments, the valve block is also provided with an overflow valve for providing back pressure, one end of the overflow valve is connected with the oil return end of the first reversing valve, the other end of the overflow valve is connected with the oil return.
[0006] In some embodiments, the valve block is also provided with a pressure reducing valve, one end of the pressure reducing valve is connected with the oil inlet, the other end of the pressure reducing valve is connected with the second reversing valve, for reducing the pressure of the hydraulic oil input to the second reversing valve.
[0007] In some embodiments, the valve block is provided with a first pressure measuring port in communication with the oil inlet, and a first pressure measuring connector connected to the first pressure measuring port, and an external pressure measuring instrument is connected to the first pressure measuring connector to detect the pressure of the external hydraulic oil input into the valve block.
[0008] In some embodiments, the valve block is provided with a second pressure measuring port between the pressure reducing valve and the second reversing valve, and a second pressure measuring connector connected to the second pressure measuring port between the pressure reducing valve and the second reversing valve, and an external pressure measuring instrument is connected to the second pressure measuring connector to detect the pressure of the hydraulic oil after being reduced by the pressure reducing valve.
[0009] In some embodiments, the valve block is provided with a third pressure measuring port, and a third pressure measuring connector connected to the third pressure measuring port at the output end of the balance valve, and an external pressure measuring instrument is connected to the third pressure measuring connector to detect the hydraulic oil rotation pressure of the external rotary motor.
[0010] In some embodiments, the valve block is further provided with a second proportional valve, one end of the second proportional valve is located between the oil inlet and the first proportional valve, and the other end of the second proportional valve is connected to the external spreader telescopic motor and / or side shift motor.
[0011] Compared with the prior art, the rotary proportional valve group for the spreader of the hoisting equipment provided by the present application can accurately adjust and control the pressure and flow of the hydraulic system of the valve group through the first proportional valve, thereby realizing accurate control of the movement speed and position of the actuator. In actual operation, the control parameters can be adjusted according to actual needs, thereby adapting to different working conditions and task requirements, having a faster response speed, being able to quickly adjust the state of the hydraulic system, and meeting the application scenarios with high real-time requirements. Therefore, the rotary proportional valve group avoids unnecessary energy waste, realizes accurate control, and effectively improves the energy utilization efficiency. At the same time, based on the balance valve, the movement speed of the external rotary motor is not affected by the load change, ensuring the stability of the external rotary motor, and the additional check valve in the balance valve can prevent the rotary motor from rotating automatically when the pipeline is damaged or the brake fails, thereby avoiding accidents. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a structural schematic diagram of the rotary proportional valve group for the spreader of the hoisting equipment in the embodiments of the present application,
[0013] Figure 2 is a working principle diagram of the rotary proportional valve group for the spreader of the hoisting equipment in the present application.
[0014] In the figure: 1. valve block, 11. oil inlet, 12. oil return, 13. first proportional valve, 14. first reversing valve, 15. balance valve, 16. second reversing valve, 17. first mounting port, 18. second mounting port, 2. overflow valve, 3. pressure reducing valve, 4. first pressure measuring port, 41. first pressure measuring connector, 5. second pressure measuring port, 6. third pressure measuring port, 61. third pressure measuring connector, 7. second proportional valve. DETAILED DESCRIPTION
[0015] In order to facilitate the understanding of the structure and operation method of the utility model, the utility model is described more comprehensively and carefully in the following combined with the drawings and the optimized embodiments of the specification, but the protection scope of the utility model is not limited to the following specific embodiments. It should be noted that the structural features and component sizes in the embodiments of the utility model can be changed, the connection methods can be replaced, and the device sizes can be changed without affecting the use effect.
[0016] Unless otherwise defined, all the professional terms used in the following have the same meaning as that generally understood by the skilled person in the art. The "first", "second" and similar words used in the specification and claims of the utility model patent application do not represent any order, quantity or importance, but only facilitate the distinction of the corresponding parts. Similarly, "one" or "a" and similar words do not represent a quantity limit, but represent the existence of at least one. "Connection" or "communication" and similar words are not limited to direct connection, but can be indirectly connected through other intermediate connecting pieces. "Upper", "lower", "one side", "the other side", "vertical", "horizontal" and the like are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship also changes accordingly.
[0017] As shown in Figure 1 , Figure 2 The utility model provides a kind of rotary proportional valve group for hoisting equipment sling, including valve block 1, the valve block 1 is equipped with oil inlet 11, oil return 12, first proportional valve 13, first reversing valve 14, balance valve 15, second reversing valve 16, first mounting port 17 and second mounting port 18, first proportional valve 13 is connected with oil inlet 11, one end of first reversing valve 14 is connected with first proportional valve 13, the other end of first reversing valve 14 is connected with one end of balance valve 15, the other end of balance valve 15 is connected with external rotary motor through first mounting port 17 for controlling the movement speed of external rotary motor, one end of second reversing valve 16 is connected with first proportional valve 13, the other end of second reversing valve 16 is connected with external sling rotary motor through second mounting port 18 for controlling the opening and closing of external rotary motor brake, and the oil return end of first proportional valve 13, first reversing valve 14, balance valve 15 and second reversing valve 16 is connected with oil return 12.
[0018] In the above embodiment, the oil inlet 11 is provided as one, and the oil outlet 12 can be provided as multiple according to the actual processing condition, and five oil return ports are provided in the present embodiment. By setting the first proportional valve 13, the pressure and flow of the hydraulic oil in the valve group hydraulic system can be accurately adjusted and controlled, and the precise control of the movement speed and position of the actuator can be realized. In actual operation, the control parameters can be adjusted according to the actual demand, thereby adapting to different working conditions and task requirements, having a faster response speed, and the state of the hydraulic system can be quickly adjusted to meet the application scenarios with high real-time requirements. Therefore, the rotary proportional valve group avoids unnecessary energy waste, realizes precise control, and effectively improves the energy utilization efficiency. At the same time, based on the balance valve 15, the movement speed of the external rotary motor is not affected by the load change, ensuring the stability of the external rotary motor, and the additional check valve in the balance valve 15 can prevent the rotary automatic rotation when the pipeline is damaged or the brake fails, thereby avoiding accidents.
[0019] Specifically, the external hydraulic oil enters the valve block 1 through the oil inlet 11, and according to the rotary pressure demand of the external rotary motor, the hydraulic oil is distributed to the first reversing valve 14 and the second reversing valve 16 through the first proportional valve 13, and then the hydraulic oil delivered to the first reversing valve 14 is delivered to the balance valve 15 by the first reversing valve 14, and the external rotary motor is accurately controlled by the balance valve 15. The hydraulic oil delivered to the second reversing valve 16 is used to control the brake opening or closing of the rotary motor by the second reversing valve 16.
[0020] In some embodiments, the valve block 1 is further provided with an overflow valve 2 for providing back pressure, one end of the overflow valve 2 is connected with the oil return end of the first reversing valve 14, and the other end of the overflow valve 2 is connected with the oil return port 12.
[0021] In the above embodiment, by setting the overflow valve 2, back pressure can be provided for the oil return of the external rotary motor, thereby preventing the external rotary motor from stalling and ensuring the stable operation of the external rotary motor.
[0022] In some embodiments, the valve block 1 is further provided with a pressure reducing valve 3, one end of the pressure reducing valve 3 is connected with the oil inlet 11, and the other end of the pressure reducing valve 3 is connected with the second reversing valve 16, for reducing the pressure of the hydraulic oil input to the second reversing valve 16.
[0023] In the above embodiment, by setting the pressure reducing valve 3 on the pipeline delivering to the second reversing valve 16, the pressure reducing valve 3 can reduce the pressure of the externally input hydraulic oil, thereby providing safe hydraulic oil for the second reversing valve 16 to release the external rotary motor brake.
[0024] In some embodiments, the valve block 1 is provided with a first pressure measuring port 4 in communication with the oil inlet 11, and a first pressure measuring connector 41 is connected to the first pressure measuring port 4. An external pressure measuring instrument is connected to the first pressure measuring connector 41 to detect the pressure of the hydraulic oil input into the valve block 1.
[0025] In the above embodiment, by providing the first pressure measuring port 4 and the first pressure measuring connector 41 on the valve block 1, an external pressure measuring instrument can be installed on the first pressure measuring connector 41. The pressure of the hydraulic oil input into the valve block 1 can be monitored in real time using the external pressure measuring instrument on the first pressure measuring connector 41.
[0026] In some embodiments, the valve block 1 is provided with a second pressure measuring port 5, and a second pressure measuring connector (not shown in the figure) is connected to the second pressure measuring port 5 and located between the pressure reducing valve 3 and the second reversing valve 16. An external pressure measuring instrument is connected to the second pressure measuring connector to detect the pressure of the hydraulic oil after being reduced by the pressure reducing valve 3.
[0027] In the above embodiment, by providing the second pressure measuring port and the second pressure measuring connector, an external pressure measuring instrument can be installed on the second pressure measuring connector. The pressure of the hydraulic oil after being reduced by the pressure reducing valve 3 can be monitored in real time using the external pressure measuring instrument on the second pressure measuring connector.
[0028] In some embodiments, the valve block 1 is provided with a third pressure measuring port 6, and a third pressure measuring connector 61 is connected to the third pressure measuring port 6 and located at the output end of the balance valve 15. An external pressure measuring instrument is connected to the third pressure measuring connector 61 to detect the hydraulic oil rotation pressure of the external rotary motor.
[0029] In the above embodiment, by providing the third pressure measuring port 6 and the third pressure measuring connector 61, an external pressure measuring instrument can be installed on the third pressure measuring connector 61. The hydraulic oil pressure provided to the external rotary motor can be monitored in real time using the external pressure measuring instrument on the third pressure measuring connector 61.
[0030] In some embodiments, the valve block 1 is further provided with a second proportional valve 7. One end of the second proportional valve 7 is located between the oil inlet 11 and the first proportional valve 13, and the other end of the second proportional valve 7 is connected to the external spreader telescopic motor and / or side shift motor.
[0031] In the above embodiment, based on the provided second proportional valve 7, the hydraulic oil input into the valve block 1 can be distributed to multiple branches according to the proportional signal, including the spreader rotation, spreader telescopic, and spreader side shift branches. Thus, the multiple operating actions of the spreader are realized on the same valve group.
[0032] The above has carried out the detailed introduction to the rotary proportional valve group for the lifting device sling provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment description is only used for helping to understand the core idea of the utility model. It should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claim.
Claims
1. A rotary proportional valve set for a hoisting equipment spreader, characterized in that, The valve block (1) is provided with an oil inlet (11), an oil return port (12), a first proportional valve (13), a first reversing valve (14), a balance valve (15), a second reversing valve (16), a first mounting port (17) and a second mounting port (18), the first proportional valve (13) is connected with the oil inlet (11), one end of the first reversing valve (14) is connected with the first proportional valve (13), the other end of the first reversing valve (14) is connected with one end of the balance valve (15), the other end of the balance valve (15) is connected with an external rotary motor through the first mounting port (17) for controlling the movement speed of the external rotary motor, one end of the second reversing valve (16) is connected with the first proportional valve (13), the other end of the second reversing valve (16) is connected with an external sling rotary motor through the second mounting port (18) for controlling the opening and closing of the external rotary motor brake, the oil return ends of the first proportional valve (13), the first reversing valve (14), the balance valve (15) and the second reversing valve (16) are connected with the oil return port (12).
2. The rotary proportional valve set for a spreader of a hoisting apparatus according to claim 1, characterized by, The valve block (1) is further provided with a relief valve (2) for providing back pressure, one end of the relief valve (2) is connected with the oil return end of the first reversing valve (14), the other end of the relief valve (2) is connected with the oil return port (12).
3. The rotary proportional valve set for a spreader of a hoisting apparatus according to claim 1, wherein The valve block (1) is further provided with a pressure reducing valve (3), one end of the pressure reducing valve (3) is connected with the oil inlet (11), the other end of the pressure reducing valve (3) is connected with the second reversing valve (16) for reducing the pressure of the hydraulic oil input to the second reversing valve (16).
4. The rotary proportional valve set for a spreader of a hoisting apparatus according to claim 1, wherein The valve block (1) is provided with a first pressure measuring port (4) in communication with the oil inlet (11), a first pressure measuring connector (41) is connected on the first pressure measuring port (4), an external pressure measuring instrument is connected on the first pressure measuring connector (41) for detecting the pressure of the external hydraulic oil input to the inside of the valve block (1).
5. The rotary proportional valve set for a hoisting equipment's sling according to claim 1, characterized in that, The valve block (1) is provided with a second pressure measuring port (5), a second pressure measuring connector is connected on the second pressure measuring port (5) between the pressure reducing valve (3) and the second reversing valve (16), an external pressure measuring instrument is connected on the second pressure measuring connector for detecting the pressure of the hydraulic oil after being reduced by the pressure reducing valve (3).
6. The rotary proportional valve set for a hoisting apparatus sling according to claim 1, wherein The valve block (1) is provided with a third pressure measuring port (6), a third pressure measuring connector (61) is connected on the third pressure measuring port (6) at the output end of the balance valve (15), an external pressure measuring instrument is connected on the third pressure measuring connector (61) for detecting the hydraulic oil rotary pressure of the external rotary motor.
7. A rotary proportional valve group for a hoisting equipment's load block according to any of claims 1 - 6, characterized in that, The valve block (1) is further provided with a second proportional valve (7), one end of the second proportional valve (7) is located between the oil inlet (11) and the first proportional valve (13), the other end of the second proportional valve (7) is connected with an external sling telescopic motor and / or a side shift motor.