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Rear cover of inclined-shaft plunger hydraulic pump

A hydraulic pump and plunger technology, which is applied in the field of the back cover of the inclined-axis plunger hydraulic pump, can solve the problems such as the inability to adjust the displacement, achieve the effect of smooth movement and adjustment, and increase the adjustment range

Inactive Publication Date: 2013-02-13
SHANGHAI ELECTRICAL HYDRAULICS & PNEUMATICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fixed connection between the valve plate and the rear cover, the existing oblique-axis plunger hydraulic pump / motor cannot realize the corresponding adjustment of its displacement.

Method used

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  • Rear cover of inclined-shaft plunger hydraulic pump
  • Rear cover of inclined-shaft plunger hydraulic pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The present invention takes the inclined axis plunger hydraulic pump as an example, such as figure 1 , figure 2 As shown, it is fixed at the rear end of the casing 1 of the inclined-axis plunger hydraulic pump. The rear cover 3 is not fixedly connected to the valve plate 8 of the hydraulic pump, but is in contact, and the rear cover 3 has an inner cavity 31 , the lower part of the inner cavity 31 also has a drive mechanism connected with the distribution plate 8, and the drive mechanism drives the flow distribution plate 8 to move along the contact surface of the rear cover 3, and the drive mechanism is a hydraulic drive mechanism 9. Therefore, its tilting angle can be changed to realize the adjustment of its displacement, that is, the larger the tilting angle, the greater the displacement.

[0013] The contact surface between the rear cover 3 and the distribution plate 8 is a concave arc surface, and the corresponding contact surface of the flow distribution plate 8 ...

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Abstract

The invention discloses a rear cover of an inclined-shaft plunger hydraulic pump, which is fixed at the rear end of a housing of the plunger hydraulic pump, located on the rear side of a valve plate arranged in the housing, and contacted with the valve plate of the hydraulic pump; a contact surface of the rear cover with the valve plate is a concave arc surface; and a corresponding contact surface of the valve plate is a convex arc surface matched with the concave arc surface. The non-fixed structure ensures that the valve plate moves along the rear cover to change the inclining angle of the rear cover, thereby adjusting the displacement, that is the larger the inclining angle is, the greater the displacement is. In addition, as the contact surface is the arc surface, the adjustment range of the inclining angle can be expanded, and the moving adjustment of the valve plate is smoother.

Description

technical field [0001] The invention belongs to hydraulic pumps / motors, in particular to a back cover of an inclined-axis plunger hydraulic pump. Background technique [0002] Inclined-axis plunger hydraulic pump / motor is mainly used for hydraulic drive of walking machinery. The traditional inclined-axis plunger hydraulic pump / motor mainly includes a casing, which is fixed on the front and rear ends of the casing, and the rear cover. The motor shaft, mandrel, plunger parts, cylinder body and distribution plate inside the housing; one end of the motor shaft protrudes from the end cover, and the other end is provided with a ball-and-socket plate, and one end of the mandrel and plunger parts is respectively set in the ball-and-socket In the disk, the other end of the mandrel and the plunger part are arranged in the cylinder body. The hydraulic pump / motor adopting the above structure has the advantages of simple processing of the plunger parts, reliable transmission, improved p...

Claims

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Application Information

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IPC IPC(8): F04B53/00F04B1/12
Inventor 李斌陈俊龙
Owner SHANGHAI ELECTRICAL HYDRAULICS & PNEUMATICS