CN2204871Y

CN2204871Y - Floating shaft connecting oil pump with two shafts

Info

Publication number: CN2204871Y
Application number: CN 94221464
Authority: CN
Inventors: 潘恒昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-21
Filing date: 1994-09-21
Publication date: 1995-08-09
Anticipated expiration: 2004-09-21

Abstract

The utility model relates to an integrated floating axle coupling oil pump with two axles, which comprises an electric motor, a sliding vane pump, a high pressure gear pump, a floating axle coupler, a communicating pipe, an oil tank, etc. The sliding vane pump is driven by the electric motor and rotates together with the gear pump through the floating axle coupler. The sliding vane pump can suck in hydraulic oil through an oil suction hole. One way of the sucked hydraulic oil passes through an inner passage and an outer communicating pipe to feed the gear pump, and the other way feeds the sliding vane pump for working. The utility model is a novel hydraulic oil pump with low cost and compact structure.

Description

Floating shaft connecting oil pump with two shafts

The utility model relates to the hydraulic-pressure pump that a kind of feed flow press uses, and relates in particular to the unsteady shaft coupling type twin shaft oil pump of a kind of integral type.

At present, in order to satisfy the requirement of hydraulic press to pressure, flow, often adopt a high-pressure service pump and a low pressure pump difference fuel feeding, need to adopt two motor drive high-pressure service pump and low pressure pump respectively, perhaps drive with a dual-axle motor, caused the cost increase, pipeline connects complexity simultaneously, and it is excessive to take up room, and makes the hydraulic press structure not compact, sometimes have to hydraulic press is separated with oil pump systems, destroyed the integrity of hydraulic press.

The purpose of this utility model is: provide a kind of with low cost, the integral type of the compact structure shaft coupling type twin shaft oil pump that floats so that improve the structure of hydraulic press, reduces the manufacture cost of hydraulic press.

The utility model is achieved in that the unsteady shaft coupling type twin shaft oil pump of integral type of the present utility model comprises: a motor, a vane pump, a high-pressure gear pump, an end-float coupling, a connecting tube, a part such as fuel tank.Vane pump is made of parts such as front case, rear case, blade pump shafts.The front end of blade pump shaft is connected with motor.One end of the rear end of blade pump shaft and end-float coupling is done concavo-convex engagement, and concavo-convex engagement is done in the other end of end-float coupling and the end of gear pump shaft, thus the driven gear pump work.Vane pump sucks hydraulic oil by inlet port, and the hydraulic oil of suction is leaded up to a passage of its inside, and through the connecting tube supply gear pump of an outside, another road is for vane pump self work again.Vane pump exports to liquid machine operating cylinder head pressure oil by low pressure oil thereon.Gear pump is discharged high pressure oil by high pressure oil outlet thereon to the hydraulic press operating cylinder.

Describe specific embodiment of the utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is a partial sectional view of the present utility model.

Fig. 2 is an assembling schematic representation of the present utility model.

Among the figure, 1-motor, 2-vane pump, the 3-high-pressure gear pump, 4-end-float coupling, 5-connecting tube, 6-blade pump shaft front end, 7-vane pump shaft rear end, 8-gear pump shaft end, the inlet port of 9-vane pump, inner passage in the 10-vane pump, the inlet port of 11-gear pump, 12-vane pump oil outlet, 13-gear pump oil outlet.

See figures.1.and.2, motor 1 drives vane pump 2, and the blade pump shaft is connected with gear pump shaft by end-float coupling 4, thereby drives high-pressure gear pump 3 work.Hydraulic oil sucks vane pump 2 from the inlet port 9 of vane pump.Hydraulic oil enters the hydraulic press operating cylinder through low pressure check valve on the vane pump and the high pressure one-way valve on the gear pump, promotes the plunger rapid movement of hydraulic press.When quick propelling is finished, during the hydraulic press ballast, the clutch release slave cylinder internal pressure rises rapidly, and low pressure check valve is closed, and vane pump oil outlet 12 pressure rise, and low pressure relief valve is opened, vane pump 2 off-loads, and this moment, vane pump 2 was to work under the low pressure and mass flow state.When pressure continue to raise level pressure power in full in the operating cylinder, the high pressure closed check valve, the high-pressure overflow valve overflow, high-pressure gear pump 3 off-loads, this moment, high-pressure gear pump 3 was to work under the high-pressure low-flow state.

The advantage of floating shaft connecting oil pump with two shafts of the present utility model is: this oil pump cheap, and compact conformation, functional, satisfied the requirement of hydraulic press to pressure, flow.

Claims

A kind of integral type shaft coupling type twin shaft oil pump that floats, it is characterized in that: it comprises a motor, a vane pump, a high-pressure gear pump, an end-float coupling, a connecting tube and a part such as fuel tank; The front end of vane pump is connected with motor, and concavo-convex engagement can be done with the end-float coupling front end in its rear end, and concavo-convex engagement can be done with the gear pump shaft end in the end-float coupling rear end; Vane pump sucks hydraulic oil by inlet port, and the hydraulic oil of suction is leaded up to a passage of its inside, and again through an external communications pipe supply gear pump, another road is for vane pump self work; To hydraulic press operating cylinder head pressure oil, gear pump is discharged high pressure oil by high pressure oil outlet thereon to the hydraulic press operating cylinder to vane pump by the outlet of the low pressure oil on it.