Bearing seat supporting device

Abstract

The utility model relates to a bearing seat supporting device, and belongs to the technical field of hydraulic transmission. Comprising a body shell and an output shaft, a mounting positioning spigot and a mounting flange with a quadrangular outer edge are arranged at the rear part of the body shell, the front part of the body shell is in a conical barrel shape, and the output shaft is separately supported by two cylindrical roller bearings with different lengths. The utility model has the advantages of simple structure, good manufacturability and high reliability, especially further facilitates the reduction of material, processing and assembly cost, and improves the performance of the product at the same time.

Description

Technical Field

[0001] The utility model relates to a bearing seat supporting device, in particular to a bearing seat supporting device applicable to a scissor lift platform, belonging to the technical field of hydraulic transmission. Background Art

[0002] Bearing seat supporting devices are widely used. Generally, the rotating output shaft of a motor or a pump will adopt an additional bearing seat supporting device, mainly due to the installation error of the output connection part or the excessive radial force of the load. The motor or the pump cannot bear the excessive radial force due to its compact structure and high rotational speed.

[0003] For an electric-driven scissor lift platform, due to the change in the driving mode brought about by technological progress, there is no need for the original supporting hydraulic brake (as shown in the patent document CN205226168U, a hydraulic braking device). When only a bearing seat supporting device is required and the function of the hydraulic brake is not needed, it can be achieved only by removing the original braking function components. However, this will bring disadvantages such as the large original structural size and the increased cost due to the structure of the bearing seat supporting device using the technology of removing the braking function of the hydraulic brake. Summary of the Invention

[0004] The purpose of the utility model is to propose a new structure to make up for the defects of the existing structure in view of the above deficiencies of the prior art. On the premise of ensuring the structural strength and connection strength, the installation and connection method is optimized, the appearance shape of the product is optimized, the bearing support structure is simplified, and the radial force support ability of the shaft end shaft extension is enhanced.

[0005] To achieve the above purpose, the applicant proposes the following technical solution of the utility model through the overall structure analysis of the bearing seat supporting device: It includes a body shell and an output shaft. An installation positioning stop and an installation flange are arranged at the rear part of the body shell. The front part of the body shell is in the shape of a conical barrel. The outer edge of the installation flange is quadrilateral. A stepped hole is arranged in the inner cavity of the body shell, and a rotary oil seal and a bearing for supporting the output shaft are arranged in the stepped hole of the body shell.

[0006] The output shaft is supported by separating two bearings. The bearings are cylindrical roller bearings. The front end of the output shaft is a shaft extension. Two bearing installation shoulders are arranged at the rear end of the output shaft. The front bearing and the rear bearing are installed at both ends of the shoulder. The rear bearing is abutted and limited by a cover plate.

[0007] A sealing ring is arranged between the cover plate and the hole of the body shell, and a hole retaining ring is arranged in the body shell to axially limit the cover plate.

[0008] The front bearing and the rear bearing have the same installation size, and the axial length of the front bearing is greater than the length of the rear bearing.

[0009] For further improvement, a lubricating grease nozzle device is provided on the cover plate.

[0010] Compared with the bearing seat support device of the prior art, the above scheme of the present utility model combines the installation dimensions of the original structure well, while ensuring the strength of the parts. In particular, it strengthens the radial force bearing capacity of the shaft extension. The structure of this bearing seat support device is simple, has good processability and high reliability. In particular, it is further beneficial to reduce the material, processing and assembly costs, and at the same time improves the performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0012] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0013] In the figure, lock nut 1, output shaft 2, oil seal 3, front bearing 4, housing 5, rear bearing 6, sealing ring 7, cover plate 8, snap ring for hole 9, nozzle 10.

[0014] Figure 2 It is a schematic structural diagram of another embodiment of the present utility model.

[0015] In the figure, lock nut 1, output shaft 2, oil seal 3, front bearing 4, housing 5, rear bearing 6, sealing ring 7, cover plate 8', snap ring for hole 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Embodiment 1

[0017] The basic structure of the bearing seat support device in this embodiment is as Figure 1 shown. The bearing seat support device includes a housing 5 and an output shaft 2. An installation positioning stop and an installation flange are provided at the rear of the housing 5. The front part of the housing 5 has a conical barrel shape, and the cone angle of the conical barrel is less than 8 degrees. In the present utility model, the installation flange part of the bearing seat support device is defined as the rear part of the device, and the shaft extension part of the output shaft 2 is defined as the front part of the device. The outer edge of the installation flange is quadrilateral. A stepped hole is provided in the inner cavity of the housing 5, and a rotary oil seal 3 and a bearing for supporting the output shaft 2 are provided in the stepped hole of the housing 5.

[0018] The output shaft 2 is supported by two separated bearings. The bearings are cylindrical roller bearings. The front end of the output shaft 2 is a shaft extension, and the shaft extension is matched with the installation sleeve hole of the machine it supports, and jointly supports the machine with other drives. Two bearing installation shoulders are provided at the rear end of the output shaft 2. The two bearings are respectively assembled from the front and rear ends of the output shaft 2 to the shoulders. The front bearing 4 and the rear bearing 6 are respectively installed at the front and rear ends of the shoulder, and the rear bearing 6 is limited by abutting against the cover plate 8.

[0019] A sealing ring 7 is provided between the cover plate 8 and the hole of the body shell 5 to seal the lubricating grease in the inner cavity of the bearing seat support device. A circlip for hole 9 is provided in the body shell 5 to axially limit the cover plate 8, so that the output shaft 2 can withstand large radial forces and certain axial forces.

[0020] The front bearing 4 and the rear bearing 6 have the same mounting dimensions. For the convenience of machining and product assembly, the bearing mounting hole diameters of the body shell 5 are the same, and the mounting shaft diameters of the output shaft 2 are the same. The axial length of the front bearing 4 is greater than that of the rear bearing 6 to enable the shaft extension of the output shaft 2 to withstand greater radial forces.

[0021] A lubricating grease nozzle 10 device is provided on the cover plate 8, which can facilitate the addition of lubricating grease to the front bearing 4 and the rear bearing 6.

[0022] Embodiment 2

[0023] The basic structure of the bearing seat support device in this embodiment is as Figure 2 shown. For further improvement of Embodiment 1, the cover plate 8' is a plate-shaped bearing retaining ring structure with a concave platform. A circlip for hole 9 is provided in the body shell 5 to axially limit the cover plate 8', so that the output shaft 2 can withstand large radial forces and certain axial forces.

[0024] In this way, the front bearing 4 and the rear bearing 6 in the cavity of the bearing seat support device can be filled with sufficient lubricating oil for lubrication.

[0025] In addition to the above embodiments, the present utility model can also have other embodiments. For example, a steel plug can be provided on the cover plate 8' for replacing the lubricating oil in the inner cavity of the present utility model. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model.

Claims

1. A bearing seat support device, characterized in that: It includes a body shell and an output shaft. The rear part of the body shell is provided with an installation positioning stop and a mounting flange. The front part of the body shell is a conical barrel shape. The outer edge of the mounting flange is a quadrilateral. The inner cavity of the body shell is provided with a step hole. A rotating oil seal and a bearing supporting the output shaft are provided in the step hole of the body shell.

2. The bearing seat support device according to claim 1, characterized in that: The output shaft is supported separately by two bearings, the bearings are cylindrical roller bearings, the front end of the output shaft is a shaft extension, and the rear end of the output shaft is provided with two bearing mounting shoulders, the front bearing and the rear bearing are mounted at both ends of the shoulders, and the rear bearing is limited by a cover plate.

3. The bearing seat support device according to claim 2, characterized in that: A sealing ring is arranged between the cover plate and the body shell hole, and a retaining ring is arranged in the body shell to axially limit the cover plate.

4. The bearing seat support device according to claim 2, characterized in that: The front bearing and the rear bearing have uniform installation dimensions, and the axial length of the front bearing is greater than the length of the rear bearing.

5. The bearing seat support device according to claim 2, characterized in that: A lubricating grease nozzle device is arranged on the cover plate.

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