Valve-controlled hydraulic motor and brake integrated device

Abstract

The present application relates to the technical field of hydraulic motor. The present application discloses a kind of valve control hydraulic motor and brake integrated device, including brake, hydraulic motor and valve block connected in sequence, and hydraulic oil circuit is equipped in the valve block;The side of the valve block is equipped with high-pressure filter, and the other side is equipped with differential pressure sensor and electromagnetic reversing valve;The outside of the valve block is equipped with outlet connector, and the bottom is equipped with servo control valve and electrical connector;The electrical connector is electrically connected with differential pressure sensor, servo control valve, electromagnetic reversing valve, and differential pressure sensor is communicated with the oil port of hydraulic motor by hydraulic oil circuit. The output shaft of the hydraulic motor of the present application is directly connected with the main shaft of brake as a whole, and the device driving and locking functions are realized together, the traditional structure accumulation is abandoned, the inlet and outlet of hydraulic motor are arranged on the valve block, the traditional hydraulic motor oil distribution cover and other structures are reduced, and the high integration of overall structure is realized.

Description

Technical Field

[0001] This invention relates to the field of hydraulic motor technology, and can be widely used in lifting and transportation, engineering machinery, shipbuilding, aerospace and other fields. Background Technology

[0002] Hydraulic motors are widely used in various industrial fields. With the continuous development of technology and the constant iteration of demands, simple hydraulic motor drives can no longer meet the increasingly sophisticated technical requirements of hydraulic control systems.

[0003] The inventors have discovered at least the following problems in the prior art: Existing technologies separate control valves, hydraulic motors, and brakes, which not only requires a lot of space but also necessitates piping connections, making it impossible to achieve the goals of compact structure, reduced weight, and functional integration. Summary of the Invention

[0004] The purpose of this invention is to provide a valve-controlled hydraulic motor and brake integrated device that integrates a servo control valve, a hydraulic motor, a brake, and a differential pressure sensor. This enables the servo control valve to directly control the hydraulic motor and technically achieves the underlying safety logic of no torque in the hydraulic motor, no brake release, and no brake lock-up, with the hydraulic motor providing priority support. This fundamentally improves the reliability and safety of the hydraulic system.

[0005] To address the aforementioned technical problems, this invention provides a valve-controlled hydraulic motor and brake integrated device, comprising a brake, a hydraulic motor, and a valve block connected in sequence, with a hydraulic oil circuit inside the valve block; a high-pressure filter is located on one side of the valve block, and a differential pressure sensor and a solenoid directional valve are located on the other side; an outlet connector is located on the outer side of the valve block, and a servo control valve and an electrical connector are located at the bottom; the electrical connector is electrically connected to the differential pressure sensor, the servo control valve, and the solenoid directional valve, and the differential pressure sensor is connected to the oil port of the hydraulic motor through the hydraulic oil circuit; an inlet connector is located on the oil port of the high-pressure filter, through which hydraulic oil... The outlet of the circuit is connected to the outlet connector, and the oil port and outlet connector of the high-pressure filter are respectively connected to the hydraulic circuit through check valves; the check valve of the high-pressure filter is connected to the solenoid directional valve through the hydraulic circuit, and the solenoid directional valve is connected to the pressure reducing valve, the servo control valve and the check valve of the outlet connector through the hydraulic circuit respectively; the pressure reducing valve is connected to the oil port of the brake through the hydraulic circuit, and the servo control valve is connected to the oil port of the hydraulic motor through the hydraulic circuit; the oil port of the hydraulic motor is connected to the check valve of the outlet connector through the hydraulic circuit, and the servo control valve is connected to the check valve of the outlet connector through the hydraulic circuit.

[0006] The brake is connected to the hydraulic motor via a first mounting screw, and the hydraulic motor is connected to the valve block via a second mounting screw.

[0007] The output shaft of the brake is connected to the main shaft of the hydraulic motor via a spline, or the output shaft of the brake is directly connected to the main shaft of the hydraulic motor, and the output shaft of the brake and the main shaft of the hydraulic motor are a common shaft.

[0008] The servo control valve is connected to the valve block by screws.

[0009] Both the one-way valve and the pressure reducing valve are located inside the valve block.

[0010] The differential pressure sensor is used to monitor the load changes of the hydraulic motor in real time, and communicates with the servo control valve through the controller to achieve pressure and flow compensation.

[0011] Compared to existing technologies, this invention directly connects the hydraulic motor output shaft and the brake main shaft into a single unit, jointly realizing the device's driving and locking functions. It abandons the traditional method of stacking structures, placing the hydraulic motor's inlet and outlet ports on the valve block, reducing the need for traditional hydraulic motor distributor caps and other structures, thus achieving a high degree of overall structural integration. It simplifies the system piping, reduces the weight of the hydraulic system and actuators, and controls the brake opening and hydraulic motor operation simultaneously via a servo control valve, saving space and improving reliability. The integration of braking function with the servo control valve and hydraulic motor achieves safety interlocking and braking control, with differential pressure sensor detection and servo control functions superimposed.

[0012] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0013] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the present invention.

[0015] In the diagram: 1-Brake, 2-Hydraulic motor, 3-Differential pressure sensor, 4-Pressure reducing valve, 5-Servo control valve, 6-Solenoid directional valve, 7-Check valve, 8-High pressure filter, 9-Inlet connector, 10-Outlet connector, 11-First mounting screw, 12-Second mounting screw, 13-Electrical connector, 14-Valve block. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details are presented in the embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments. The division of the following embodiments is for ease of description and should not constitute any limitation on the specific implementation of this invention. The embodiments can be combined with and referenced by each other without contradiction.

[0017] Example 1 like Figures 1-3 The diagram illustrates a valve-controlled hydraulic motor and brake integrated device, comprising a brake 1, a hydraulic motor 2, and a valve block 14 connected in sequence. The valve block 14 contains a hydraulic oil circuit. A high-pressure filter 8 is located on one side of the valve block 14, and a differential pressure sensor 3 and a solenoid directional valve 6 are located on the other side. An outlet connector 10 is located on the outer side of the valve block 14, and a servo control valve 5 and an electrical connector 13 are located at the bottom. The electrical connector 13 is electrically connected to the differential pressure sensor 3, the servo control valve 5, and the solenoid directional valve 6. The differential pressure sensor 3 is connected to the oil port of the hydraulic motor 2 via the hydraulic oil circuit. A 9 is provided on the oil port of the high-pressure filter 8, and the outlet of the hydraulic oil circuit is connected to the outlet connector. The head 10 is connected, and the oil port and outlet connector 10 of the high-pressure filter 8 are respectively connected to the hydraulic circuit through the check valve 7; the check valve 7 of the high-pressure filter 8 is connected to the solenoid directional valve 6 through the hydraulic circuit, and the solenoid directional valve 6 is connected to the pressure reducing valve 4, the servo control valve 5 and the check valve 7 of the outlet connector 10 through the hydraulic circuit; the pressure reducing valve 4 is connected to the oil port of the brake 1 through the hydraulic circuit, and the servo control valve 5 is connected to the oil port of the hydraulic motor 2 through the hydraulic circuit; the oil port of the hydraulic motor 2 is connected to the check valve 7 of the outlet connector 10 through the hydraulic circuit, and the servo control valve 5 is connected to the check valve 7 of the outlet connector 10 through the hydraulic circuit.

[0018] The brake 1 is connected to the hydraulic motor 2 via the first mounting screw 11, and the hydraulic motor 2 is connected to the valve block 14 via the second mounting screw 12.

[0019] The output shaft of the brake 1 is connected to the main shaft of the hydraulic motor 2 via a spline, or the output shaft of the brake 1 is directly connected to the main shaft of the hydraulic motor 2, and the output shaft of the brake 1 and the main shaft of the hydraulic motor 2 are a common shaft.

[0020] The servo control valve 5 is connected to the valve block 14 by screws.

[0021] Both the one-way valve 7 and the pressure reducing valve 4 are located inside the valve block 14.

[0022] The differential pressure sensor 3 is used to monitor the load change of the hydraulic motor 2 in real time, and communicates with the servo control valve 5 through the controller to realize pressure and flow compensation.

[0023] Furthermore, in different space requirements, the inlet connector 9 and the outlet connector 10 can be configured with different structural types.

[0024] Specifically, the electrical connector 13 integrates the cables of the electromagnetic reversing valve 6, differential pressure sensor 3, servo control valve 5, etc. into one output, which greatly saves cable layout space and achieves functions such as simplification and aesthetics.

[0025] Example 2 During operation, the hydraulic oil first passes through the high-pressure filter 8 to remove impurities and then enters the front end of the solenoid directional valve 6 through the check valve 7. After the solenoid directional valve 6 is energized, one end of the hydraulic oil is depressurized through the pressure reducing valve 4 and enters the piston chamber inside the brake 1, pushing the piston chamber to move and unlocking the brake 1. At the same time, the other end enters the inlet of the servo control valve 5. When the servo control valve 5 is energized, the hydraulic oil enters the hydraulic motor 2 and drives the hydraulic motor 2 to rotate, thereby driving the entire integrated device.

[0026] When not in operation, brake 1 brakes the main shaft through brake pads under the action of the internal spring. The hydraulic oil in the piston chamber inside brake 1 is connected to the return port of the solenoid directional valve 6 through the pressure reducing valve 4, and then connected to the system oil tank through the return port to unload brake 1. This ensures the device's ability to brake stably when not in operation, and achieves safe and reliable braking of the device's drive mechanism. At this time, since there is no hydraulic pressure inside the device, the hydraulic motor 2 is in a state of no output torque, thus meeting the requirement that the brake 1 does not release when the hydraulic motor 2 has no torque.

[0027] Furthermore, the pressure reducing valve 4 is mainly used to reduce the system pressure. Due to the matching opening pressure of the brake 1, when the brake 1 is opened, the servo control valve 5 is energized to realize the forward and reverse drive of the hydraulic motor 2, so as to achieve the normal operation of the device.

[0028] Furthermore, the high-pressure filter 8 filters the hydraulic oil input to the system to prevent impurities from entering the device and contaminating or damaging precision components such as the solenoid directional valve 6, servo control valve 5, and hydraulic motor 2.

[0029] Specifically, during operation, the servo control valve 5 controls the hydraulic motor 2, thereby achieving high-precision motion control of the device and enabling the device to have the ability to operate with high dynamic response, high precision control, and high reliability.

[0030] In summary, the integrated structure of the brake, hydraulic motor, and valve block of this invention solves the pain points of distributed layouts and has advantages such as compact structure, space saving, and weight reduction. It simplifies installation, optimizes working hours, and reduces costs in maintenance and management. Integrating the valve block and hydraulic motor reduces the hysteresis effect caused by hydraulic oil compression, improving the responsiveness and controllability of the device. Traditional connections between valves, hydraulic motors, and brakes require a large number of external management connectors, while the external management connectors of this invention are completely eliminated, thus eliminating the risk of external leakage.

[0031] Those skilled in the art will understand that the above embodiments can be modified in form and detail in practical applications without departing from the spirit and scope of the invention.

Claims

1. A valve-controlled hydraulic motor and brake integrated device, characterized in that: The system includes a brake (1), a hydraulic motor (2), and a valve block (14) connected in sequence. The valve block (14) has a hydraulic oil circuit inside. A high-pressure filter (8) is provided on one side of the valve block (14), and a differential pressure sensor (3) and a solenoid directional valve (6) are provided on the other side. An outlet connector (10) is provided on the outside of the valve block (14), and a servo control valve (5) and an electrical connector (13) are provided at the bottom. The electrical connector (13) is electrically connected to the differential pressure sensor (3), the servo control valve (5), and the solenoid directional valve (6). The differential pressure sensor (3) is connected to the oil port of the hydraulic motor (2) through the hydraulic oil circuit. An inlet connector (9) is provided on the oil port of the high-pressure filter (8), and the outlet of the hydraulic oil circuit is connected to the outlet connector (10). The oil port and outlet connector (10) of the high pressure filter (8) are connected to the hydraulic circuit through check valve one and check valve two, respectively; the check valve one of the high pressure filter (8) is connected to the solenoid directional valve (6) through the hydraulic circuit, and the solenoid directional valve (6) is connected to the pressure reducing valve (4), the servo control valve (5) and the check valve two of the outlet connector (10) through the hydraulic circuit, respectively; the pressure reducing valve (4) is connected to the oil port of the brake (1) through the hydraulic circuit, and the servo control valve (5) is connected to the oil port of the hydraulic motor (2) through the hydraulic circuit; the oil port of the hydraulic motor (2) is connected to the check valve two of the outlet connector (10) through the hydraulic circuit, and the servo control valve (5) is connected to the check valve two of the outlet connector (10) through the hydraulic circuit; The output shaft of the brake (1) is connected to the main shaft of the hydraulic motor (2) via a spline, or the output shaft of the brake (1) is directly connected to the main shaft of the hydraulic motor (2), and the output shaft of the brake (1) and the main shaft of the hydraulic motor (2) are a common shaft; the differential pressure sensor (3) is used to monitor the load change of the hydraulic motor (2) in real time, and communicates with the servo control valve (5) through the controller to realize pressure and flow compensation.

2. The valve-controlled hydraulic motor and brake integrated device as described in claim 1, characterized in that: The brake (1) is connected to the hydraulic motor (2) by the first mounting screw (11), and the hydraulic motor (2) is connected to the valve block (14) by the second mounting screw (12).

3. The valve-controlled hydraulic motor and brake integrated device as described in claim 1, characterized in that: The servo control valve (5) is connected to the valve block (14) by screws.

4. The valve-controlled hydraulic motor and brake integrated device as described in claim 1, characterized in that: The one-way valve (1), one-way valve (2), and pressure reducing valve (4) are all located inside the valve block (14).

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