Valve-controlled hydraulic motor and brake integrated device

Abstract

The invention relates to the technical field of hydraulic motors. The valve-controlled hydraulic motor and brake integrated device comprises a brake, a hydraulic motor and a valve block which are connected in sequence, and a hydraulic oil way is arranged in the valve block; a high-pressure filter is arranged on one side of the valve block, and a differential pressure sensor and an electromagnetic directional valve are arranged on the other side of the valve block; an outlet connector is arranged on the outer side of the valve block, and a servo control valve and an electric appliance connector are arranged at the bottom of the valve block. The electric appliance connector is electrically connected with the differential pressure sensor, the servo control valve and the electromagnetic directional valve, and the differential pressure sensor is communicated with an oil port of the hydraulic motor through a hydraulic oil way. The output shaft of the hydraulic motor and the main shaft of the brake are directly connected into a whole to jointly achieve device driving and locking functions, the traditional structure stacking mode is abandoned, the oil inlet and outlet of the hydraulic motor are formed in the valve block, structures such as an oil distribution cover of the traditional hydraulic motor are reduced, and high integration of the whole structure is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic motors, which can be widely applied in the fields of hoisting and transportation, engineering machinery, marine navigation, aerospace, etc. BACKGROUND

[0002] Hydraulic motors are widely used in different industrial fields. With the continuous development of technology and the continuous iteration of demand, pure hydraulic motor driving has been unable to meet the technical requirements of the increasingly developed hydraulic control system.

[0003] The present application relates to the technical field of hydraulic motors, which can be widely applied in the fields of hoisting and transportation, engineering machinery, marine navigation, aerospace, etc. The prior art arranges the control valve, hydraulic motor and brake separately, which not only requires a large amount of space, but also needs to be connected by pipelines, and cannot achieve compact structure, reduce weight and functional integration. SUMMARY

[0004] The present application relates to the technical field of hydraulic motors, which can be widely applied in the fields of hoisting and transportation, engineering machinery, marine navigation, aerospace, etc.

[0005] To solve the above technical problems, the present application provides a valve-controlled hydraulic motor and brake integrated device, which comprises a brake, a hydraulic motor and a valve block connected in sequence, and a hydraulic oil circuit is arranged in the valve block; one side of the valve block is provided with a high-pressure filter, and the other side is provided with a differential pressure sensor and an electromagnetic reversing valve; the outer side of the valve block is provided with an outlet connector, and the bottom is provided with a servo control valve and an electrical connector; the electrical connector is electrically connected with the differential pressure sensor, the servo control valve and the electromagnetic reversing valve, and the differential pressure sensor is communicated with the oil port of the hydraulic motor through the hydraulic oil circuit; an inlet connector is arranged on the oil port of the high-pressure filter, the outlet of the hydraulic oil circuit is communicated with the outlet connector, and the oil port of the high-pressure filter and the outlet connector are respectively communicated with the hydraulic oil circuit through one-way valves; the one-way valve of the high-pressure filter is connected with the electromagnetic reversing valve through the hydraulic oil circuit, and the electromagnetic reversing valve is connected with the pressure reducing valve, the servo control valve and the one-way valve of the outlet connector through the hydraulic oil circuit; the pressure reducing valve is connected with the oil port of the brake through the hydraulic oil circuit, and the servo control valve is connected with the oil port of the hydraulic motor through the hydraulic oil circuit; the oil port of the hydraulic motor is connected with the one-way valve of the outlet connector through the hydraulic oil circuit, and the servo control valve is connected with the one-way valve of the outlet connector through the hydraulic oil circuit.

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

[0007] The output shaft of the brake is connected with the main shaft of the hydraulic motor through a spline, or the output shaft of the brake is directly connected with 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 with the valve block through a screw.

[0009] The one-way valve and the pressure reducing valve are arranged in the valve block.

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

[0011] Compared with the prior art, the output shaft of the hydraulic motor is directly connected with the main shaft of the brake to form an integrated whole, the device driving and locking functions are realized, the traditional structure accumulation is abandoned, the inlet and outlet ports of the hydraulic motor are arranged on the valve block, the traditional hydraulic motor oil distribution cover and other structures are reduced, the high integration of the overall structure is realized, the system pipeline is simplified, the weight of the hydraulic system and the execution device is reduced, the brake is opened through the servo control valve, the hydraulic motor is controlled to work at the same time, the space is saved, and the reliability is improved; the brake function is integrated with the servo control valve and the hydraulic motor to realize safety interlocking and brake control, and the differential pressure sensor detection and servo control are superimposed.

[0012] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0013] One or more embodiments are exemplified by pictures in the corresponding drawings, which do not constitute a limitation on the embodiments, elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified, the drawings do not constitute a proportional limit.

[0014] Fig. 1 is a structural schematic diagram of the present application; Fig. 2 is a side view of the present application; Fig. 3 is a principle diagram of the present application.

[0015] In the figure: 1-brake, 2-hydraulic motor, 3-differential pressure sensor, 4-pressure reducing valve, 5-servo control valve, 6-electromagnetic reversing valve, 7-one-way valve, 8-high pressure filter, 9-inlet joint, 10-outlet joint, 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 Figs. 1-3 The device shown is an integrated valve-controlled hydraulic motor and brake, 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 servo control valves 5 and 13 are located at the bottom. The 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 10. The oil port and outlet connector 10 of the high-pressure filter 8 are respectively connected to the hydraulic circuit via check valve 7; the check valve 7 of the high-pressure filter 8 is connected to the solenoid directional valve 6 via 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 via the hydraulic circuit; the pressure reducing valve 4 is connected to the oil port of the brake 1 via the hydraulic circuit, and the servo control valve 5 is connected to the oil port of the hydraulic motor 2 via the hydraulic circuit; the oil port of the hydraulic motor 2 is connected to the check valve 7 of the outlet connector 10 via the hydraulic circuit, and the servo control valve 5 is connected to the check valve 7 of the outlet connector 10 via 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] Further, in different space requirements, the inlet joint 9 and the outlet joint 10 can be provided in different structural types.

[0024] Specifically, the electrical connector 13 integrates the cables of the electromagnetic reversing valve 6, the differential pressure sensor 3, the servo control valve 5, etc. into one output, greatly saving the cable arrangement space and realizing the functions of simplification and beauty.

[0025] Embodiment 2 When working, the hydraulic oil passes through the high-pressure filter 8 to filter out impurities, and then enters the front end of the electromagnetic reversing valve 6 through the one-way valve 7. After the electromagnetic reversing valve 6 is powered on, one end of the hydraulic oil enters the piston cavity inside the brake 1 after being reduced by the pressure reducing valve 4, and drives the piston cavity to move, thereby unlocking and opening the brake 1. At the same time, the other end enters the inlet of the servo control valve 5, and the servo control valve 5 works after being powered on. The hydraulic oil enters the hydraulic motor 2 and drives the hydraulic motor 2 to rotate and work, thereby driving the entire integrated device.

[0026] When not working, the brake 1 brakes the main shaft through the brake pad under the action of the internal spring. The hydraulic oil in the piston cavity inside the brake 1 is connected to the oil return port of the electromagnetic reversing valve 6 through the pressure reducing valve 4, and is connected to the system oil tank through the oil return port, thereby achieving the unloading of the brake 1 and ensuring the stable braking ability of the device in the non-working state, and achieving the safe and reliable braking of the device driving 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, thereby achieving the requirement of no release of the brake 1.

[0027] Further, the pressure reducing valve 4 is mainly used for reducing the system pressure. Since the opening pressure of the brake 1 is matched, the servo control valve 5 is powered on at the same time as the brake 1 is opened, thereby realizing the forward and reverse driving work of the hydraulic motor 2 and achieving the purpose of normal work of the device.

[0028] Further, the high-pressure filter 8 filters the input hydraulic oil of the system to prevent impurities from entering the device and polluting and damaging the precise parts such as the electromagnetic reversing valve 6, the servo control valve 5, and the hydraulic motor 2.

[0029] Specifically, when working, the servo control valve 5 controls the hydraulic motor 2, thereby realizing high-precision motion control of the device and making the device have the ability of high dynamic response, high-precision control, and high reliability.

[0030] In summary, the brake, hydraulic motor and valve block three-in-one connection structure of the application solves the pain points of distributed layout, has the advantages of compact structure, space saving, weight reduction and the like, simplifies installation, optimizes working hours and reduces cost in maintenance management; the integration of the valve block and the hydraulic motor reduces the hysteresis effect caused by the compression of hydraulic oil, improves the responsiveness and controllability of the device; a large number of external management joints are required for the connection between the traditional valve, hydraulic motor and brake, and the external management joints of the application are completely cancelled, eliminating the risk of external leakage.

[0031] Those skilled in the art can understand that the above-mentioned embodiments can be variously changed in form and details in practical application without departing from the spirit and scope of the present application.

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. One side of the valve block (14) is equipped with a high-pressure filter (8), and the other side is equipped with a differential pressure sensor (3) and a solenoid directional valve (6). The outer side of the valve block (14) is equipped with an outlet connector (10), and the bottom is equipped with a servo control valve (5) and an electrical connector (13). 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. The oil port of the high-pressure filter (8) is equipped with an inlet connector (9), 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 a 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.

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 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.

4. 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.

5. The valve-controlled hydraulic motor and brake integrated device as described in claim 1, characterized in that: Both the one-way valve (7) and the pressure reducing valve (4) are located inside the valve block (14).

6. The valve-controlled hydraulic motor and brake integrated device as described in claim 1, characterized in that: 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.

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