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Harmonic gear pump

A gear pump, harmonic technology, applied in the direction of rotary piston pump, pump, rotary piston machine, etc., to achieve the effect of less obvious deformation, high pump oil efficiency and excellent comprehensive performance

Active Publication Date: 2015-12-02
盐城市瑞华机电制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the problems caused by the radial force existing in the existing external meshing gear pump and internal meshing gear pump, and provide a harmonic gear with improved radial force balance, oil pumping efficiency and service life Pump

Method used

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] figure 1 and figure 2 One embodiment of the present invention is shown. The harmonic gear pump of the present invention consists of a flexible wheel 2, a rigid wheel 3, a rotating arm 13, a roller 14, a connecting pin 15, a transmission shaft 1, a left side plate 5, a right side plate 6, a sealing block 8, and a front bearing seat 9 , Rear bearing block 10, pump body 4 etc. are formed. The flexible spline 2 is a thin-walled flexible gear ring that can produce elastic deformation, and is installed on the outer ring of the roller 14; the rigid spline 3 is a rigid inner gear, fixed on the pump body 4 with a connecting pin 15; the flexible spline 2 and the rigid spline 3 The same centerline and the same tooth width.

[0026] The rotating arm 13 and the roller 14 form a wave generator. The rotating arm 13 is fixed on the above-...

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PUM

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Abstract

The invention relates to a harmonic gear pump, comprising a flexible gear (2), a rigid gear (3), a tumbler (13), a roller (14), a connecting pin (15), a transmission shaft (1), left and right lateral plates (5 and 6), a sealing block (8), front and rear bearing blocks (9 and 10) and a pump body (4), wherein the flexible gear (2) is a thin-wall flexible tooth ring capable of generating elastic deformation; the rigid gear (3) is a rigid inner gear; the flexible gear (2) and the rigid gear (3) are concentric and equal in tooth width; the tumbler (13) and the roller (14) form a wave generator; the total length is greater than the diameter of an inner hole of the flexible gear (2); the tooth crests and the action lines of the sealing block (8), the left and right lateral plates (5 and 6), the flexible gear (2) and the rigid gear (3) partition a sealed work cavity into two symmetrical oil absorption cavities (a) and two symmetrical oil pressure cavities (b). The harmonic gear pump has the advantages that the radial hydraulic force generated by the two oil pressure cavities is counteracted; the load of the transmission shaft is reduced; the problem of unbalanced radial force of the traditional gear pump is solved; the service life of the pump is prolonged.

Description

technical field [0001] The invention relates to the technical field of gear pumps, in particular to a harmonic gear pump. Background technique [0002] Gear pumps are the most commonly used hydraulic pumps in hydraulic transmission systems. They can be divided into two categories: external gear pumps and internal gear pumps. They are composed of driving gears, driven gears, transmission shafts, pump bodies, and pump covers. and other components, there is only one oil suction chamber and one pressure oil chamber when working, which leads to the following problems: [0003] (1) The oil pressure in the pressure oil chamber is higher than the oil pressure in the oil suction chamber, and the pressure difference between the two generates a large radial force. This radial force pushes the gear to the side of the oil suction chamber, causing the transmission shaft to bend and deform. This will increase the axial clearance between the end face of the gear and the side plate, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C2/10
Inventor 祝海林邹旻王铖龙蒋宇
Owner 盐城市瑞华机电制造有限公司