A device suitable for press fitting of bearing bushings for heavy-duty wheels

Abstract

The utility model discloses a kind of device suitable for supporting heavy wheel bearing bush press-mounting, it is related to press-mounting device field, including horizontal press, the inside of horizontal press is provided with processing platform, supporting heavy wheel is movably placed on the processing platform, and bearing bush is press-mounted in the inside of supporting heavy wheel, the top of horizontal press is movably installed with end plate by telescopic pneumatic cylinder, and one side of end plate is fixedly installed with pressure head tooling by bolt, and the outer ring of pressure head tooling is equipped with O ring, the other side of end plate is installed with pressure sensor, the side end of pressure sensor is installed with ball joint, the side end of ball joint is connected with the body lateral wall of horizontal press.The utility model press-mounts the bearing bush needed by being equipped with in the outer ring of pressure head tooling, supporting heavy wheel is placed on processing platform, when supporting heavy wheel of different diameters is press-mounted, processing platform is lifted and moved in turn and then can guarantee that press-mounting tooling and product are concentrically arranged, guarantee the accuracy of press-mounting work and press-mounting effect is good.

Description

Technical Field

[0001] This utility model relates to the field of press-fitting devices, specifically to a device suitable for press-fitting support roller bearings. Background Technology

[0002] Track rollers are used to support the weight of bulldozers or other engineering machines (such as excavators) while rolling on the track rails (track links) or track pads. They also restrain the tracks and prevent lateral slippage. Each track roller requires two bearing bushes. The bearing bushes work on the principles of lubrication and friction. The use of bearing bushes reduces the friction between the roller and the shaft. Bearing bushes are mostly assembled and connected to the track roller by press fitting.

[0003] A Chinese patent publication number (CN207809561U) discloses an excavator track roller assembly, belonging to the field of excavator technology. It includes a track roller body, a track roller shaft, bearing bushes, side covers, O-rings, retaining pins, and a floating seal assembly. The key feature is that the track roller body has an axially oriented through hole in its center; a bimetallic bushing is press-fitted into the track roller body; the track roller body has an internal cavity; the track roller shaft is located within the cavity; the bearing bushes are located at both ends of the track roller body; one end of each bearing bush has a flange; a retaining groove is provided on the inner side of the track roller body; the flange is engaged within the retaining groove; and the side covers are located on both sides of the track roller body. By utilizing the internal oil guide cavity for lubrication, the manufacturing process is simplified, the overall strength of the track roller is improved, and its service life is extended.

[0004] The existing pressing process for support rollers and bearing bushes still has the following problems: the pressing of support rollers and bearing bushes requires manual shaft alignment for guidance, which is a cumbersome operation, resulting in low overall processing efficiency. Furthermore, when the clearance between the guide shafts is too large, there is a risk to the pressing quality.

[0005] Therefore, it is necessary to invent a device suitable for press-fitting support roller bearings to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a device suitable for pressing bearing bushes of support rollers, in order to solve the problem mentioned in the background art that the existing support roller bearing pressing process requires manual shaft alignment for guidance, which is a cumbersome operation, resulting in low overall processing efficiency, and when the guide shaft clearance is too large, there is a risk to the pressing quality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device suitable for press-fitting support roller bearings, comprising a horizontal press, wherein a processing platform is provided inside the horizontal press, a support roller is movably placed on the processing platform, and a bearing is press-fitted inside the support roller, an end plate is movably installed above the horizontal press via a telescopic cylinder, and a press head fixture is fixedly installed on one side of the end plate by bolts, and an O-ring is fitted on the outer ring of the press head fixture, a pressure sensor is installed on the other side of the end plate, and a ball joint is installed on the side end of the pressure sensor, the side end of the ball joint being connected to the side wall of the horizontal press body.

[0008] Preferably, a lifting plate is fixedly installed at the bottom of the processing platform, and the processing platform can be raised and lowered independently. The processing platform is square in shape, so that the height of the lifting plate can be adjusted according to different product heights, ensuring that the pressing fixture and the product are concentric, thus ensuring the accuracy of the pressing work and the good pressing effect.

[0009] Preferably, two limiting rollers are rotatably mounted on the processing platform, and the two limiting rollers are symmetrically arranged with reference to the central axis of the processing platform. The two limiting rollers are in contact with the support rollers, and the support rollers are clamped between the two limiting rollers. This allows the support rollers to have room to move according to the force applied by the pressure head tool when the two sides are subjected to the pressure head tool, thus ensuring a better pressing effect.

[0010] Preferably, there are two sets of pressure head fixtures, and the two sets of pressure head fixtures are symmetrically arranged with reference to the central axis of the processing platform. The two sets of pressure head fixtures are located on both sides of the support roller. In this way, the relative movement of the two sets of pressure head fixtures can realize the assembly connection between the bearing bush fitted on the pressure head fixture and the support roller placed between the two pressure head fixtures.

[0011] Preferably, the pressure head fixture is constructed by welding a thick rod and a thin rod together, and an O-ring is fitted on the outer ring of the thin rod. A bearing is movably fitted on the outer ring of the O-ring, so that the bearing fitted on the pressure head fixture can be assembled and connected with the support roller placed between the two pressure head fixtures.

[0012] Preferably, the outer diameter of the thin rod is smaller than the inner diameter of the inner ring wall of the bearing bush, the outer diameter of the thick rod is larger than the outer diameter of the outer ring wall of the bearing bush, and the outer diameter of the thick rod is larger than the inner diameter of the central shaft hole of the support roller, so as to ensure that the pressure head tooling can effectively press the bearing bush and the support roller.

[0013] Preferably, the two O-rings are fitted together on the outer ring of the thin rod, and there is a gap between the two O-rings. The O-rings are made of rubber, and the bearing bush is supported by O-rings to avoid unqualified pressing due to inconsistent wheel size.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model, by fitting the bearing bush to be pressed onto the outer ring of the press head fixture and placing the support roller on the processing platform, can ensure that the pressing fixture and the product are concentrically set when pressing support rollers of different diameters, thus ensuring the accuracy of the pressing work and the good pressing effect. 2. Two O-rings are fitted together as a set of thin rod outer rings in the pressure head fixture, and there is a gap between the two O-rings. The O-rings are made of rubber. The bearing bush is supported by O-rings to avoid the wheel body size being inconsistent and causing the pressing to be unqualified. This makes the assembly connection between the bearing bush fitted on the pressure head fixture and the support roller placed between the two pressure head fixtures better. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a three-dimensional view of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a top view schematic diagram of part of the structure of this utility model; Figure 4 This is an exploded view of the connection structure between the pressure head tooling and the support roller of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Horizontal press; 2. Machining platform; 3. Press head fixture; 4. End plate; 5. Pressure sensor; 6. Ball joint; 7. Support roller; 8. Bearing; 9. O-ring; 10. Telescopic cylinder. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] This utility model provides, for example Figure 1-4The device shown is suitable for press-fitting support roller bearings. It includes a horizontal press 1, a processing platform 2 is provided inside the horizontal press 1, a support roller 7 is movably placed on the processing platform 2, and a bearing 8 is press-fitted inside the support roller 7. An end plate 4 is movably installed above the horizontal press 1 through a telescopic cylinder 10, and a press head fixture 3 is fixedly installed on one side of the end plate 4 by bolts. This facilitates the replacement of press head fixtures 3 with different diameters, so that bearings 8 of different sizes can be press-fitted to the support roller 7. An O-ring 9 is fitted on the outer ring of the press head fixture 3. A pressure sensor 5 is installed on the other side of the end plate 4, and a ball joint 6 is installed on the side end of the pressure sensor 5. The side end of the ball joint 6 is connected to the side wall of the horizontal press 1.

[0020] In use, a horizontal press 1 is used, which allows both sides of the support roller 7 to be controlled and pressed simultaneously. A pressure sensor 5 is installed on the side of the press head fixture 3 to detect the pressing force in real time. The pressure sensor 5 is connected to the ball joint 6 to prevent the press head fixture 3 from sinking.

[0021] A lifting plate is fixedly installed at the bottom of the processing platform 2, and the processing platform 2 can be raised and lowered independently. The processing platform 2 is square in shape, so the height of the lifting plate can be adjusted according to different product heights, ensuring that the pressing fixture and the product are concentric, thus ensuring the accuracy of the pressing work and the good pressing effect. Two limiting rollers are rotatably installed on the processing platform 2, and the two limiting rollers are symmetrically set with reference to the central axis of the processing platform 2. The two limiting rollers are in contact with the support roller 7, and the support roller 7 is locked between the two limiting rollers.

[0022] This allows the support roller 7 to have a slight left-right adjustment range when the pressure head tool 3 applies force to both sides, ensuring a better pressing effect.

[0023] There are two sets of pressure head fixtures 3, and the two sets of pressure head fixtures 3 are symmetrically arranged with reference to the central axis of the processing platform 2. The two sets of pressure head fixtures 3 are located on both sides of the support roller 7. In this way, the relative movement of the two sets of pressure head fixtures 3 can realize the assembly and connection of the bearing bush 8 fitted on the pressure head fixture 3 and the support roller 7 placed between the two pressure head fixtures 3.

[0024] The pressure head fixture 3 is constructed by welding together a thick rod and a thin rod. An O-ring 9 is fitted onto the outer ring of the thin rod, and a bearing shell 8 is movably fitted onto the outer ring of the O-ring 9. Two O-rings 9 are fitted together on the outer ring of the thin rod, with a gap between them. The O-rings 9 are made of rubber. The bearing shell 8 is supported by O-rings 9 to prevent misfitting due to inconsistent wheel sizes. This allows the bearing shell 8 fitted on the pressure head fixture 3 to be assembled and connected with the support roller 7 placed between the two pressure head fixtures 3. The outer diameter of the thin rod is smaller than the inner diameter of the inner ring wall of the bearing shell 8, while the outer diameter of the thick rod is larger than the outer diameter of the outer ring wall of the bearing shell 8. The outer diameter of the thick rod is also larger than the inner diameter of the shaft hole of the support roller 7, ensuring that the pressure head fixture 3 can effectively press the bearing shell 8 and the support roller 7.

[0025] When in use, first, the bearing shell 8 to be pressed is placed on the outer ring of the press head fixture 3, and the support roller 7 is placed on the processing platform 2. When pressing support rollers 7 of different diameters, the processing platform 2 can be raised and lowered to ensure that the pressing fixture and the product are concentrically set, thus ensuring the accuracy of the pressing work and the good pressing effect.

[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for press-fitting support roller bearings, comprising a horizontal press (1), characterized in that, The horizontal press (1) is equipped with a processing platform (2) inside. A support roller (7) is movably placed on the processing platform (2), and a bearing (8) is press-fitted inside the support roller (7). An end plate (4) is movably installed on the top of the horizontal press (1) through a telescopic cylinder (10). A pressure head fixture (3) is fixedly installed on one side of the end plate (4) by bolts, and an O-ring (9) is fitted on the outer ring of the pressure head fixture (3). A pressure sensor (5) is installed on the other side of the end plate (4). A ball joint (6) is installed on the side end of the pressure sensor (5), and the side end of the ball joint (6) is connected to the side wall of the horizontal press (1).

2. The device for press-fitting support roller bearings according to claim 1, characterized in that, The bottom of the processing platform (2) is fixedly equipped with a lifting plate, and the processing platform (2) can be raised and lowered independently. The processing platform (2) is square in shape.

3. The device for press-fitting support roller bearings according to claim 2, characterized in that, Two limiting rollers are rotatably mounted on the processing platform (2), and the two limiting rollers are symmetrically set with reference to the central axis of the processing platform (2). The two limiting rollers are in contact with the support roller (7), and the support roller (7) is clamped between the two limiting rollers.

4. The device for press-fitting support roller bearings according to claim 3, characterized in that, The pressure head fixture (3) is provided in two sets, and the two sets of pressure head fixtures (3) are symmetrically arranged with reference to the central axis of the processing platform (2) as the left and right axis, and the two sets of pressure head fixtures (3) are located on both sides of the support roller (7).

5. The device for press-fitting support roller bearings according to claim 3, characterized in that, The pressure head fixture (3) is made of a thick rod and a thin rod welded together, and an O-ring (9) is clamped on the outer ring of the thin rod, and a bearing (8) is movably fitted on the outer ring of the O-ring (9).

6. The device for press-fitting support roller bearings according to claim 5, characterized in that, The outer diameter of the thin rod is smaller than the inner diameter of the inner ring wall of the bearing (8).

7. The device for press-fitting support roller bearings according to claim 6, characterized in that, The outer diameter of the thick rod is larger than the outer diameter of the outer ring wall of the bearing bush (8), and the outer diameter of the thick rod is larger than the inner diameter of the shaft hole of the support wheel (7).

8. The device for press-fitting support roller bearings according to claim 5, characterized in that, The two O-rings (9) are fitted together on the outer ring of the thin rod, and there is a gap between the two O-rings (9). The O-rings (9) are made of rubber.

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