Gear motor with integrated valve group

Abstract

The gear motor comprises a valve block and a motor assembly which are connected with each other, the valve block is connected with an electromagnetic proportional overflow valve, a two-position four-way electromagnetic directional valve and an air suction prevention one-way overflow valve, and an oil return opening T, an oil inlet opening P and an oil drainage opening Dr are formed in the valve block. Hydraulic elements are arranged in an integrated mode, the installation space is compact, pipeline connection is reduced through an oil cavity in the motor, and operation is convenient.

Description

Technical Field

[0001] The invention relates to the field of motors, and in particular to a gear motor with an integrated valve group. Background Art

[0002] In conventional shovel steering hydraulic control systems, the motor is a separate actuator, and the customer system is equipped with various cartridge valves. Since the steering system controls the direction of the shovel, it is necessary to maintain the input of hydraulic power at all times. Summary of the invention

[0003] Purpose of the invention: In view of the shortcomings and defects of the prior art, the present invention provides a gear motor with an integrated valve group, which arranges hydraulic components in an integrated manner, has a compact installation space, utilizes the internal oil cavity of the motor to reduce pipeline connections, and is easy to operate.

[0004] Technical solution: A gear motor with an integrated valve group of the present invention is characterized in that it includes a valve block and a motor assembly that are connected to each other, the valve block is connected to an electromagnetic proportional relief valve, a two-position four-way electromagnetic reversing valve, and an anti-cavitation one-way relief valve, and the valve block is provided with an oil return T port, an oil inlet P port, and an oil drain Dr port.

[0005] Wherein, the valve block is provided with an electromagnetic proportional overflow valve jack for installing the electromagnetic proportional overflow valve.

[0006] Wherein, the valve block is provided with a two-position four-way electromagnetic reversing valve jack for installing a two-position four-way electromagnetic reversing valve.

[0007] Wherein, the valve block is provided with an anti-cavitation one-way overflow valve jack for installing the anti-cavitation one-way overflow valve.

[0008] Wherein, the oil drain port Dr is connected to the oil tank.

[0009] The valve block, the electromagnetic proportional relief valve, the two-position four-way electromagnetic reversing valve, and the anti-cavitation one-way relief valve constitute an integrated valve group.

[0010] Wherein, the front cover of the motor assembly is provided with a supporting bearing and is directly connected to the integrated valve group.

[0011] The two-way function of the motor is realized by the reversing of the two-position four-way electromagnetic reversing valve, and the anti-air suction one-way relief valves on both sides of the motor prevent the motor from being overloaded during actual operation. The electromagnetic proportional relief valve serves as the main valve in the system to protect the entire system.

[0012] Among them, the bidirectional function of the motor is realized by reversing the two-position four-way solenoid reversing valve. When the two-position four-way solenoid reversing valve is not energized, the oil inlet P port enters oil from the left side of the motor assembly through the two-position four-way solenoid reversing valve. When the two-position four-way solenoid reversing valve is energized, the oil inlet P port enters oil from the right side of the motor assembly through the solenoid valve.

[0013] When the present invention is in use, when the electromagnetic reversing valve is not energized, the motor rotates forward, and the oil inlet P port enters the left side of the motor through the two-position four-way electromagnetic reversing valve for oil intake, and then the oil is discharged from the right side of the motor and then returned to the oil tank through the two-position four-way electromagnetic reversing valve; when energized, the motor reverses, and the oil inlet P port enters the right side of the motor through the two-position four-way electromagnetic reversing valve for oil intake, and then the oil is discharged from the left side of the motor and then returned to the oil tank through the two-position four-way electromagnetic reversing valve; the oil return port of the electromagnetic proportional overflow valve, the oil return port of the anti-air suction one-way overflow valve and the oil return port of the two-position four-way electromagnetic reversing valve are all connected with the oil return T port.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the present invention arranges hydraulic components in an integrated manner, the installation space is compact, the internal oil chamber of the motor is used to reduce pipeline connections, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the electromagnetic proportional relief valve of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the oil inlet of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the anti-cavitation one-way overflow valve of the present invention;

[0019] Figure 5 It is the principle diagram of the present invention;

[0020] In the figure, 1 is the valve block; 2 is the oil return T port; 3 is the motor assembly; 4 is the electromagnetic proportional relief valve; 5 is the two-position four-way electromagnetic reversing valve; 6 is the oil inlet P port; and 7 is the anti-cavitation one-way relief valve. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0022] The gear motor with integrated valve group of the present invention comprises a valve block 1 and a motor assembly 3 connected to each other, the valve block 1 is connected to an electromagnetic proportional relief valve 4, a two-position four-way electromagnetic reversing valve 5, and an anti-cavitation one-way relief valve 7, and the valve block 1 is provided with an oil return T port 2, an oil inlet P port 6, and an oil drain Dr port. Among them, the valve block 1 is provided with an electromagnetic proportional relief valve jack for installing the electromagnetic proportional relief valve 4. The valve block 1 is provided with a two-position four-way electromagnetic reversing valve jack for installing the two-position four-way electromagnetic reversing valve 5. The valve block 1 is provided with an anti-cavitation one-way relief valve jack for installing the anti-cavitation one-way relief valve 7. The oil drain Dr port is connected to the oil tank.

[0023] The valve block 1, electromagnetic proportional relief valve 4, two-position four-way electromagnetic reversing valve 5, and anti-cavitation one-way relief valve 7 of the present invention form an integrated valve group. The integrated valve group replaces the original motor rear cover and is connected to the valve group oil chamber by the internal channel of the motor. The front cover of the motor assembly 3 is provided with a support bearing and is directly connected to the integrated valve group.

[0024] In actual work, the bidirectional function of the motor is realized by reversing the two-position four-way solenoid reversing valve 5. When the two-position four-way solenoid reversing valve 5 is not energized, the oil inlet P port 6 enters oil from the left side of the motor assembly 3 through the two-position four-way solenoid reversing valve 5. When the two-position four-way solenoid reversing valve 5 is energized, the oil inlet P port 6 enters oil from the right side of the motor assembly 3 through the solenoid valve.

[0025] The anti-cavitation one-way overflow valves 7 on both sides of the motor prevent the motor from being overloaded during actual operation. Since the high-pressure chamber is converted into a low-pressure chamber, oil can be replenished from the oil return chamber through the one-way valve to ensure that the motor will not be damaged due to lack of oil.

[0026] The electromagnetic proportional relief valve 4 serves as the main valve in the system to protect the entire system and control the working speed of the motor. When the system is overloaded, the relief valve is opened to return the oil to the oil tank from the return oil T port 2. By integrating the electromagnetic proportional relief valve 4, the two-position four-way electromagnetic reversing valve 5, and the anti-cavitation one-way relief valve 6 on the valve block 1, the installation space of the entire system is reduced, the operation is convenient, and the overall use efficiency of the motor is improved.

[0027] When the present invention is in use, when the electromagnetic reversing valve is not energized, the motor rotates forward, and the oil inlet P port 6 enters the left side of the motor through the two-position four-way electromagnetic reversing valve 5, and then the oil is discharged from the right side of the motor and then returned to the oil tank through the two-position four-way electromagnetic reversing valve 5; when energized, the motor reverses, and the oil inlet P port 6 enters the right side of the motor through the two-position four-way electromagnetic reversing valve 5, and then the oil is discharged from the left side of the motor and then returned to the oil tank through the two-position four-way electromagnetic reversing valve 5; the oil return port of the electromagnetic proportional relief valve 4, the oil return port of the anti-air suction one-way relief valve 7 and the oil return port of the two-position four-way electromagnetic reversing valve 5 are all connected to the oil return T port 2.

Claims

1. A gear motor with an integrated valve group, characterized in that: The invention comprises a valve block (1) and a motor assembly (3) which are connected to each other. The valve block (1) is connected to an electromagnetic proportional relief valve (4), a two-position four-way electromagnetic reversing valve (5), and an anti-cavitation one-way relief valve (7). The valve block (1) is provided with an oil return T port (2), an oil inlet P port (6), and an oil drain Dr port.

2. The gear motor with integrated valve assembly according to claim 1, characterized in that: The valve block (1) is provided with an electromagnetic proportional overflow valve jack for installing an electromagnetic proportional overflow valve (4).

3. The gear motor with integrated valve assembly according to claim 1, characterized in that: The valve block (1) is provided with a two-position four-way electromagnetic reversing valve jack for installing a two-position four-way electromagnetic reversing valve (5).

4. The gear motor with integrated valve assembly according to claim 1, characterized in that: The valve block (1) is provided with an anti-cavitation one-way overflow valve insertion hole for installing an anti-cavitation one-way overflow valve (7).

5. The gear motor with integrated valve assembly according to claim 1, characterized in that: The oil drain Dr port is connected to the oil tank.

6. The gear motor with integrated valve assembly according to claim 1, characterized in that: The valve block (1), the electromagnetic proportional relief valve (4), the two-position four-way electromagnetic reversing valve (5), and the anti-cavitation one-way relief valve (7) form an integrated valve group.

7. The gear motor with integrated valve assembly according to claim 6, characterized in that: The front cover of the motor assembly (3) is provided with a supporting bearing and is directly connected to the integrated valve group.

8. The gear motor with integrated valve assembly according to claim 1, characterized in that: The two-way function of the motor is realized by the reversing of the two-position four-way electromagnetic reversing valve (5). The anti-vacuum one-way overflow valves (7) on both sides of the motor prevent the motor from being overloaded during actual operation. The electromagnetic proportional overflow valve (4) serves as the main valve in the system and plays a protective role for the entire system.

9. The gear motor with integrated valve assembly according to claim 8, characterized in that: The two-way function of the motor is realized by switching the two-position four-way electromagnetic reversing valve (5). When the two-position four-way electromagnetic reversing valve (5) is not energized, the oil inlet P port (6) enters the left side of the motor assembly (3) through the two-position four-way electromagnetic reversing valve (5). When the two-position four-way electromagnetic reversing valve (5) is energized, the oil inlet P port (6) enters the right side of the motor assembly (3) through the electromagnetic valve.

10. The gear motor with integrated valve assembly according to any one of claims 1 to 9, characterized in that: When in use, when the electromagnetic reversing valve is not energized, the motor rotates forward, the oil inlet P port (6) enters the left side of the motor through the two-position four-way electromagnetic reversing valve (5), and then the oil is discharged from the right side of the motor and then returned to the oil tank through the two-position four-way electromagnetic reversing valve (5); when energized, the motor rotates reversely, the oil inlet P port (6) enters the right side of the motor through the two-position four-way electromagnetic reversing valve (5), and then the oil is discharged from the left side of the motor and then returned to the oil tank through the two-position four-way electromagnetic reversing valve (5); the oil return port of the electromagnetic proportional relief valve (4), the oil return port of the anti-cavitation one-way relief valve (7) and the oil return port of the two-position four-way electromagnetic reversing valve (5) are all connected to the oil return T port (2).

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