CN217914861U - Novel bearing bush limiting and fixing device - Google Patents

Abstract

The utility model discloses a novel spacing fixing of axle bush device belongs to mechanical hydraulic pressure technical field, including the flange seat, the inside movable mounting of flange seat has the axle bush, the pinhole has been seted up on the flange seat, be provided with in the pinhole and carry out the round pin axle fixed to the axle bush, set up the spacing hole corresponding with the round pin axle on the axle bush, spacing fixing device still includes the drift, and drift extrusion round pin axle makes the round pin axle passes the pinhole and inserts the inside in spacing hole, and the counter shaft tile is spacing fixed. This novel spacing fixing device of axle bush through the pinhole that corresponds to set up and spacing hole, run through the pinhole and with the round pin axle that spacing hole is connected to solved prior art, because the thickness of axle bush is too thin, the problem that countersunk screw surpassed axle bush runway surface can appear using the great countersunk screw of diameter.

Description

Novel bearing bush limiting and fixing device

Technical Field

The utility model belongs to the technical field of mechanical hydraulic pressure, especially, relate to a novel spacing fixing of axle bush device.

Background

In the operation process of a plurality of complex hydraulic components such as a hydraulic axial plunger pump with variable displacement, a plunger motor and the like, the displacement can be changed all the time due to energy conservation requirements, a swing seat of the pump matched with a bearing bush continuously rotates back and forth along a bearing bush runway, the bearing bush is not allowed to move in the working process of the pump, and therefore the bearing bush needs to be firmly fixed on a flange seat.

At present, on some small displacement pumps, the bearing bush is generally limited and fixed by using the countersunk head screw at home and abroad, but the countersunk head screw with the larger diameter is required to be used on the large displacement pump for meeting the strength requirement, and because the thickness of the bearing bush is too thin, the problem that the countersunk head screw can exceed the runway surface of the bearing bush occurs on the lead.

Therefore, a novel bearing bush limiting and fixing device is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving prior art, because the thickness of axle bush is too thin, use the great countersunk screw of diameter can appear that the countersunk screw surpasss the problem of axle bush runway surface, and the novel spacing fixing of axle bush that provides device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel spacing fixing of axle bush device, includes the flange seat, the inside movable mounting of flange seat has the axle bush, the pinhole has been seted up on the flange seat, be provided with in the pinhole and carry out the round pin axle fixed to the axle bush, set up the spacing hole corresponding with the round pin axle on the axle bush, spacing fixing device still includes the drift, and drift extrusion round pin axle makes the round pin axle passes the pinhole and inserts the inside in spacing hole, and is spacing fixed to the axle bush.

Preferably, the top opening of the limiting hole is a counter bore, and the upper portion of the counter bore is a 90-degree taper hole.

Preferably, the outer wall of round pin axle sets up to the optical axis, the bottom of round pin axle is provided with 15 degrees guide angles.

Preferably, the pin shaft is a low-carbon steel shaft.

Preferably, the limiting device further comprises a through hole and a 90-degree taper angle hole which are formed in the pin shaft, and under the action of external force, the inner wall surface of the limiting hole is overlapped with the taper angle surface of the pin shaft.

To sum up, the utility model discloses a technological effect and advantage: this novel spacing fixing device of axle bush corresponds the pinhole of seting up and spacing hole, runs through the pinhole and the round pin axle that is connected with spacing hole, and the drift strikes the round pin axle, gives a decurrent extrusion force of round pin axle to insert the inside of axle bush with the round pin axle, and the round pin axle is in the inside in spacing hole all the time, and then has solved prior art, because the thickness of axle bush is too thin, the great countersunk screw of use diameter can appear that countersunk screw surpasss the problem of axle bush runway face.

Drawings

FIG. 1 is a schematic view of the pin hole structure of the present invention;

FIG. 2 is a schematic view of the flange seat structure of the present invention;

FIG. 3 is a schematic view of the present invention before punching and riveting;

FIG. 4 is a schematic view of the utility model after punching and riveting;

fig. 5 is the schematic diagram of the pin structure of the present invention.

In the figure: 1. a flange seat; 2. bearing bushes; 3. a pin hole; 4. a pin shaft; 5. a limiting hole; 6. a punch; 7. and (4) a guide angle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a novel bearing bush limiting and fixing device, including flange seat 1, flange seat 1's inside movable mounting has axle bush 2, flange seat 1's inside is equipped with the oil groove that is used for introducing high-pressure oil to axle bush 2 runway surface, flange seat 1 personally submits the arc design with axle bush 2 contacts, flange seat 1 is last to have seted up pinhole 3, pinhole 3 runs through flange seat 1's top surface, and pinhole 3 symmetry has seted up two, be located flange seat 1's homonymy both ends, be provided with in the pinhole 3 and carry out the round pin axle 4 fixed to axle bush 2, axle bush 2 is last to have seted up with round pin axle 4 corresponding spacing hole 5, spacing hole 5's apical opening is the counter sink setting, and the upper portion of counter sink is 90 degrees taper holes.

Referring to fig. 1, 3 and 4, the limiting and fixing device further comprises a punch 6, the punch 6 extrudes the pin shaft 4, the pin shaft 4 penetrates through the pin hole 3 and is inserted into the limiting hole 5, and the bearing bush 2 is limited and fixed. The pin shaft 4 is a low-carbon steel shaft, the pin shaft 4 made of low-carbon steel is easy to deform but cannot crack under the action of external force, the top end of the pin shaft 4 is fixedly connected with a cylindrical ring concentrically arranged with the pin shaft 4, and when the pin shaft 4 is extruded by the punch 6, the cylindrical ring deforms.

Referring to fig. 3-4, the top opening of the limiting hole 5 is a counter bore, and the upper portion of the counter bore is a 90-degree taper hole. After punching and riveting are finished, the flanging at the outer side of the cylindrical ring deformation part on the pin shaft 4 is in interference fit with the taper hole surface of the bearing bush 2, and the pin shaft 4 does not exceed the runway surface of the bearing bush 2 after riveting; the lower part of the limiting hole 5 is a straight hole which can limit the bearing bush 2 to rotate along the center of the cambered surface and can also limit the bearing bush 2 to move along the vertical central plane.

Referring to fig. 3-5, the outer wall of the pin shaft 4 is set to be an optical axis, the bottom end of the pin shaft 4 is provided with a 15-degree guide angle 7, so that the pin shaft 4 can be conveniently installed inside the limiting hole 5 on the flange seat 1, the 15-degree guide angle 7 can enable the punching force to be uniformly distributed, and burrs caused by sharp edge contact during punching are also avoided.

Referring to fig. 1, 3 and 4, the limiting device further comprises a through hole and a 90-degree taper angle hole which are formed in the pin shaft 4, and under the action of external force, the inner wall surface of the limiting hole 5 is overlapped with a taper angle surface on the pin shaft 4. The positioning device is used for positioning the punch 6 and is also convenient for introducing high-pressure oil into the track surface of the bearing bush 2 from the bottom of the flange seat 1.

The working principle is as follows: place axle bush 2 on flange bracket 1, it is corresponding with the drill way of spacing hole 5 on the axle bush 2 to make pinhole 3 on the flange bracket 1, inject round pin axle 4 into the inside of pinhole 3 and spacing hole 5 this moment, use drift 6, give round pin axle 4 decurrent extrusion force, round pin axle 4 atress makes the cylinder ring with 4 top fixed connection of round pin axle produce deformation, realize the interference laminating with 2 taper hole faces of axle bush, and round pin axle 4 after the punching press extrusion does not surpass 2 race faces of axle bush, the bottom of round pin axle 4 inserts inside the spacing hole 5 of axle bush 2, thereby realized round pin axle 4 spacing fixed to axle bush 2.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides a novel spacing fixing device of axle bush, its characterized in that, includes flange seat (1), the inside movable mounting of flange seat (1) has axle bush (2), pinhole (3) have been seted up on flange seat (1), be provided with in pinhole (3) and carry out fixed round pin axle (4) to axle bush (2), set up on axle bush (2) and sell the corresponding spacing hole (5) of axle bush (4), spacing fixing device still includes drift (6), and drift (6) extrusion round pin axle (4), make round pin axle (4) pass pinhole (3) and insert the inside in spacing hole (5), counter axle bush (2) spacing fixed.

2. A novel bearing bush limiting and fixing device as claimed in claim 1, wherein the top opening of the limiting hole (5) is a countersunk hole, and the upper part of the countersunk hole is a 90-degree taper hole.

3. A novel bearing shell limiting and fixing device as claimed in claim 1, wherein the outer wall of the pin shaft (4) is set to be an optical axis, and the bottom end of the pin shaft (4) is provided with a guide angle (7) of 15 degrees.

4. A novel bearing shell limiting and fixing device as claimed in claim 1, wherein the pin shaft (4) is a mild steel shaft.

5. A novel bearing bush limiting and fixing device as claimed in claim 1, further comprising a through hole and a 90-degree taper hole formed in the pin shaft (4), wherein under the action of an external force, the inner wall surface of the limiting hole (5) coincides with the taper angle surface of the pin shaft (4).

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