Rotary motor control system with same pressure difference

A control system and rotary motor technology, applied in servo motors, servo motor components, fluid pressure actuation devices, etc., can solve problems such as pressure rise, damage to equipment, oil trapping, etc., and achieve consistent output power and less damage to equipment.

Pending Publication Date: 2021-02-09
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, under certain working conditions, motors or oil cylinders need to be used in series. At this time, the oil passages between the two motors communicate with each other and cooperate with the same load. However, in the application, when there is a difference in the motor speed Or external environmental factors, such as temperature, will cause the volume of oil between the two motors to expand, and the volume of oil between the two motors is constant, which will lead to a sharp rise in pressure and oil trapping Phenomenon, damage equipment

Method used

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  • Rotary motor control system with same pressure difference
  • Rotary motor control system with same pressure difference
  • Rotary motor control system with same pressure difference

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] see figure 1 — Figure 6 , a rotary motor control system with the same pressure difference, including the first motor 2 and the subsequent motor 3 connected in series on the oil circuit, the first motor 2 is provided with a first output end 23, and the subsequent motor 3 is provided with a rear The output end 33, the first output end 23, and the rear output end 33 are connected to the same load 1; the first motor 2 is provided with a first oil inlet 21 and a first oil outlet 22, and the subsequent motor 3 is provided with The rear oil inlet 31 and the rear oil outlet 32, the first oil inlet 21 communicates with the first oil tank 24, and the first oil outlet 22 communicates with the rear oil tank 34 after passing through the rear oil inlet 31 and the rear oil outlet 32 ​​successively; The control system also includes a pressure regulating valve 4, which is provided with an A port 5, a P port 6, and a T port 7. The communication structure of the A port 5 includes commun...

Embodiment 2

[0059] Basic content is the same as embodiment 1, the difference is:

[0060] The pressure regulating valve 4 includes a valve body 41, a spool 42, a P oil chamber 61, an A oil chamber 51 and a T oil chamber 71, and the spool 42 moves axially left and right in the valve body 41; the spool 42 P groove 62, A groove 52, T groove 72 are opened in the middle of the middle part in order to communicate with P oil chamber 61, A oil chamber 51, T oil chamber 71 one by one, P oil chamber 61, A oil chamber 51 , The bottom of the T oil chamber 71 is the corresponding P port 6, A port 5, and T port 7; the left and right ends of the valve core 42 are respectively in contact with the ends of the left pressure chamber 8 and the right pressure chamber 9 , The side of the left pressure chamber 8 communicates with the side of the P oil chamber 61, and the side of the right pressure chamber 9 communicates with the side of the A oil chamber 51.

Embodiment 3

[0062] Basic content is the same as embodiment 2, the difference is:

[0063] The left pressure chamber 8 is provided with a left spring seat 81, a left spring 82 and a left balance plate 83, and the right pressure chamber 9 is provided with a right spring seat 91, a right spring 92 and a right balance plate 93; the left spring Seat 81 is connected with one end of left spring 82, and the other end of left spring 82 is connected with one end of left balance plate 83, and the other end of left balance plate 83 is connected with the left end of spool 42; Described right spring seat 91 and One end of the right spring 92 is connected, the other end of the right spring 92 is connected with one end of the right balance plate 93 , and the other end of the right balance plate 93 is connected with the right end of the spool 42 .

[0064] The area of ​​the preferred left balance plate 83 is half of the area of ​​the right balance plate 93, assuming that the pressure area of ​​the left ba...

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Abstract

The invention discloses a rotary motor control system with the same pressure difference. The rotary motor control system comprises a first motor, a follow-up motor and a pressure regulating valve, wherein the first motor is provided with a first output end, a first oil inlet and a first oil outlet, the follow-up motor is provided with a rear output end, a rear oil inlet and a rear oil outlet, thefirst output end and the rear output end are connected with the same load, the first oil inlet communicates with a first oil tank, and the first oil outlet communicates with a rear oil tank after sequentially passing through the rear oil inlet and the rear oil outlet; the pressure regulating valve is provided with a port A, a port P and a port T, and the communication structure of the port A comprises any one of a structure communicating with the opening P, a structure communicating with the opening T and a structure not communicating with the opening P and the opening T; and the port P communicates with the first oil inlet, the port A communicates with the first oil outlet and the rear oil inlet, and the port T communicates with the rear oil outlet. According to the design, the motors connected in series are free of oil trapping, and equipment is not prone to damage.

Description

technical field [0001] The invention relates to a motor control system, which belongs to the field of hydraulic element design, in particular to a rotary motor control system with the same pressure difference. Background technique [0002] In the prior art, under certain working conditions, motors or oil cylinders need to be used in series. At this time, the oil passages between the two motors communicate with each other and cooperate with the same load. However, in the application, when there is a difference in the motor speed Or external environmental factors, such as temperature, will cause the volume of oil between the two motors to expand, and the volume of oil between the two motors is constant, which will lead to a sharp rise in pressure and oil trapping phenomenon, damage the equipment. [0003] The disclosure of information in this background section is only intended to increase the understanding of the general background of this patent application, and should not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/16F15B13/06
CPCF15B11/161F15B13/06F15B13/021
Inventor 张三喜丁元亮
Owner WUHAN MARINE MACHINERY PLANT
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