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Duplex hydraulic gear pump

A technology of hydraulic gear pumps and gear shafts, applied in pumps, pump components, rotary piston pumps, etc., can solve the problems of high cost of use and oil leakage, and achieve the effects of avoiding oil leakage and reducing cost of use

Inactive Publication Date: 2017-12-22
合肥赛源液压件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a two-connected hydraulic gear pump to solve the problems of high use cost and oil leakage existing in the prior art

Method used

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] Such as figure 1 As shown, a kind of double hydraulic gear pump proposed by the present invention comprises a front cover 1, a first pump body 2, a connecting plate 3, a second pump body 4 and a rear cover 5 connected in sequence, the front cover 1, the first pump body The first driving gear shaft (not shown in the figure) and the first driven gear shaft (not shown in the figure) are installed in the cavity formed by the body 2 and the connecting plate ...

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Abstract

The invention discloses a duplex hydraulic gear pump comprising a front cover, a first pump body, a connection plate, a second pump body and a back cover, wherein the front cover, the first pump body, the connection plate, the second pump body and the front cover are sequentially connected, a first driving gear shaft and a first driven gear shaft are installed in an inner cavity defined by the front cover, the first pump body and the connection plate, a second driving gear shaft and the first driven gear shaft are installed in an inner cavity defined by the connection plate, the second pump body and the back cover. The connection plate is provided with an installation hole penetrating through the connection plate. A spline sleeve is arranged in the installation hole. The first driving gear shaft is connected with the second driving gear shaft through the spline sleeve. The side wall of the first pump body is provided with an oil inlet. The inner side wall of the first pump body is provided with a first groove communicating with the oil inlet. The inner side wall of the second pump body is provided with a second groove. The connection plate is provided with a communication hole. The first groove is connected with the second groove through a communication hole. Hence, compared with the prior art, the duplex hydraulic gear pump has the advantages of reducing use cost and preventing oil leakage.

Description

technical field [0001] The invention relates to a gear pump, in particular to a two-connected hydraulic gear pump. Background technique [0002] In modern hydraulic transmission, a double hydraulic gear pump is a device in which two gear pumps are connected in series in the axial direction, driven by a drive shaft, and the displacement of each pump can be combined arbitrarily. The double hydraulic gear pump has a wide range of applications and is used in various machine tools, light industrial machinery, forklifts, loaders, automobiles, diesel locomotives, aircraft and other machinery. [0003] The currently used dual hydraulic gear pump is to connect the two gear pumps through a connecting plate. Therefore, it is necessary to open an oil inlet on the pump body of the two gear pumps. When using it, it is necessary to equip two sets of oil inlet equipment such as oil pipes and filter elements. The cost of use is high, and the installation plane where the oil inlet on the pum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/18F04C15/06F04C15/00
CPCF04C2/18F04C15/00F04C15/06
Inventor 毕长虹
Owner 合肥赛源液压件有限公司
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