DE8805310U1 - hydraulic pump - Google Patents

Description

The innovation consists of a hydraulic pump * which includes a pump and a motor.

Such machine elements are used in various applications and are therefore known in many different designs. In mechanical engineering, devices that are driven by an electric or combustion engine are usually used* However, for many applications these are too complex, too large and too expensive* There are also pumps that are driven by hand or foot power, but in these cases the pumping effect is too slow or too strenuous. In all cases, the connection to the containers for the hydraulic medium is complex and complicated.

The aim of the innovation is therefore to propose a hydraulic pump which does not have the above-mentioned disadvantages and, in particular, can be manufactured and assembled as a compact unit using simple means without reducing its performance.

The solution to the problem is set out in the claim. Claims 2 to 5 contain special embodiments.

In order to create a compact and simple unit, the pump is mounted on the lid of a container and is easily driven by a standard hand drill. The medium pumped by the pump is thus pumped into a closed

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The hydraulic oil is stored in a container, which avoids the risk of environmental pollution when using environmentally harmful hydraulic oil. The hand drill causes relatively high pressures to be generated. The latter must only be available on both The drill can be attached to both the container and the pump via a mounting device* This in turn allows easy installation and removal of the drill, which can be used for other purposes in the meantime Such a design is suitable therefore particularly suitable for small craft businesses or in the private sector.

In order to be able to generate relatively high pressures, the pump according to a preferred design consists of a radial piston pump,

To enable quick assembly and fastening or disassembly of the hand drill, there is According to a further embodiment, the receiving device on the container consists of a round opening in the lid of the container corresponding to the neck of the drill housing. The insertion or removal of the drill and jamming of the drill on the container holder is achieved by the cover having a clamping gap that cuts into the opening and is crossed by a clamping screw. By tightening or loosening the latter, the drill can be attached using simple means.

To ensure that the clamping gap always remains closed, it is filled with an elastic sealing compound.

The connection between the drill and the pump is made by screwing the free threaded attachment of the drive shaft of the drill into an eccentric bush. The latter is supported by a roller bearing

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The eccentric movement of the surface of the lag then causes a movement of the piston, which is acted upon by a spring, whereby the pump is in

operation is put into operation. 5

To simplify production and handling, the check valve, the pressure valve, the pressure relief valve and the drain valve are in the cover of the

container. 10

The innovation is explained in more detail using two figures:

Figure 1 shows a cross-section through the pump and the container.

Figure 2 shows a plan view of the embodiment according to Figure 1.

The container 1 is provided with a lid 2, to which

to which both the pump 3 and the hand drill 4 are attached. The mounting device for the drill 4 consists of a round opening 5 attached to the lid 2 of the container 1, into which the drill housing neck 6 is inserted. 'In order to be able to change the diameter of this opening 5 for the purpose of attaching the drill 4,

j the lid 2 is provided with a gap 7 which intersects the opening 5 and is crossed by a clamping screw j 30 8. In order to produce a closed container 1, the gap 8 is filled with an elastic sealing compound 9 which allows the necessary small gap changes.

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The mounting device for the drill 4 towards the pipe 3 consists of an eccentric bushing 10 which is surrounded by a ball bearing 11, whereby the surface of the bearing 11 acts on the piston 12 of the pump 3. The eccentric bushing 10 fastened to the free threaded attachment 13 of the drill 4 causes a hin_ tinri hornohonHo RoLJoniinn cin<t tdnlhpns 12 And

dcmit the desired pumping effect.

A pressure relief valve 14 is provided to prevent possible overloading. This as well as a drain valve 15, a check valve 16 and a pressure valve 17 are attached to the cover 2 and thus facilitate production and handling.

Claims (5)

FAG Kugelfischer Georg Schäfer R-RS-1-008HR-wa-st partnership limited by shares 20.04.1988 Claims 1. Hydraulic pump consisting of a pump and a motor, characterized in that the pump (3) is arranged on the lid (2) of a container (1) and a receiving device for a commercially available hand drill (4) is provided both on the lid (2) and on the pump (3). 2. Hydraulic pump according to claim 1, characterized in that the pump (3) consists of a radial piston pump. 3. Hydraulic pump according to claim 1 or 2, characterized in that the receiving device for the drilling machine (4) on the lid (2) of the container (1) from a round opening (5) of the cover corresponding to the drill housing neck (6) (2) of the container (1), wherein the lid (2) has a clamping gap (7) which cuts into the opening (5) and is filled with elastic sealing compound (9) and which is crossed by a clamping screw (8). 4. Hydraulic pump according to claim 1, 2 or 3, characterized in that the free threaded projection (13) of the drive shaft of the hand drill (4) is inserted into an eccentric bushing (10) which is surrounded by a rolling bearing (11), the outer surface of the bearing (11) acting on the piston (12) of the pump (3). «r· t f · -Z- 5. Hydraulic pump according to claim 1, 2, 3 or 4, characterized in that a pressure relief valve (14), a drain valve (15), a check valve (16) and a pressure valve (17) are arranged in the cover (2) of the container (1). &bull; Il < 1111 &igr;