CN204628276U - Composite guideway bearing - Google Patents

Abstract

A kind of composite guideway bearing, is mainly used in military vehicle conveying shell.Outer ring one, retainer between outer ring two and inner ring are built with steel ball; Retainer is split-type structural, and inner ring and bearing support are combined into one; The side of inner ring is provided with two pairs of lugs, and with for bearings mounted bearing pin in lug, bearing pin is contained on lug; Outer ring two and ball bearing roll at the horizontal segment of guide rail, and when bearing is turn-taked, outer ring two and ball bearing getaway, two outer rings one contact with each other at the arc section of guide rail, rotate.The utility model installing space is little, and precision is high, and bearing capacity is large, and simple installation is quick, and anti-corrosion ability is strong, rigidity and bearing capacity high.

Description

Combined guide rail bearings

technical field

The utility model relates to the technical field of bearing manufacture, in particular to a bearing for a combined guide rail used for transporting shells by military vehicles.

Background technique

In the prior art, there are many structures of linear guide bearings, such as cylindrical roller bearings, deep groove ball bearings, tapered roller bearings, linear bearings, ball screw linear bearings, etc., which can reciprocate on linear guide rails. , can simultaneously withstand large axial loads, radial loads and other comprehensive loads, and integrates multiple functions such as support, rotation, transmission, and fixation. In general, the guide rail bearing itself has installation holes, lubricating oil and sealing devices, which can meet the different needs of various hosts under different working conditions; on the other hand, the guide rail bearing itself has the advantages of compact structure, convenient guidance, convenient installation and Easy to maintain and other features, it is widely used in precision equipment or special machinery industries such as food machinery, packaging machinery, medical machinery, printing machinery, textile machinery, instrument manufacturing, automobile manufacturing, tool machinery, CNC machine tools, robots and digital three-dimensional coordinate measuring equipment among.

Currently, standard guide rail bearings are limited to linear guide rails, including V-shaped, round, square guide rails, etc. For the convex ring guide rail, due to the limitation of the size of the guide rail, it is required to be able to withstand radial and axial forces, and to be able to turn flexibly at the level and arc of the guide rail. Common guide rail bearings cannot meet the requirements.

Contents of the invention

In order to overcome the deficiencies of the prior art, the purpose of the invention of the utility model is to provide a bearing for a combined guide rail, so as to realize flexible steering at the level and arc of the convex circular guide rail.

In order to achieve the above purpose, steel balls are installed in the cage between the outer ring one, the second outer ring and the inner ring of the utility model; the cage is a split structure, and the inner ring and the bearing seat are combined into one; one side of the inner ring There are two pairs of lugs, and there are pin shafts for installing ball bearings inside the lugs. The pin shafts are installed on the lugs; the second outer ring and the ball bearing roll on the horizontal section of the guide rail. When the bearing rotates, the second outer ring and the ball The bearing breaks away from the guide rail, and the two outer rings contact each other and rotate on the arc section of the guide rail.

The outer ring one and the outer ring two have a peach-shaped channel one; the outer diameter of the outer ring one is larger than the outer diameter of the outer ring two.

The inner ring has a peach-shaped channel two; the bearing seat has a pin hole for installing a chain.

Compared with the prior art, the utility model has the following advantages:

① Small installation space: The utility model has a small radial dimension and a thinner wall thickness, which changes the standard bearing structure and combines the inner ring and the bearing seat into one body, saving installation space to a greater extent.

② High precision: The outer ring adopts a heat treatment method combining vacuum quenching and correction, and the inner ring adopts partial surface quenching, which greatly reduces the amount of deformation and improves the bearing precision.

③. High rigidity and load capacity: Double row four-point angular contact ball bearings are adopted, the inner ring and bearing seat are integrated structure, and the steel ball is enlarged, which improves the bearing capacity of the bearing.

④. Flexible internal structure: the split cage is adopted, which can improve the strength of the cage and the flexibility of the bearing, and facilitate the installation of steel balls.

⑤. Anti-corrosion ability: the outer ring is made of stainless steel, and the inner ring is oxidized, which improves the anti-rust ability of the bearing.

⑥. Easy and fast installation: the integrated structure of the inner ring and the bearing housing makes the bearing modular and componentized, and the maintenance and installation are more convenient and fast.

Description of drawings

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a side view of FIG. 1 .

FIG. 3 is an enlarged view of the peach-shaped channel in FIG. 1 .

Figure 4 is an enlarged view of the bearing when turning.

Figure 5 is a diagram of the bearing rotating on the guide rail.

FIG. 6 is a side view of FIG. 5 .

Fig. 7 is an assembled view of the cage of Fig. 1 .

Detailed ways

As shown in Figure 1, Figure 2, Figure 3, and Figure 7, steel balls 3 are installed in the cage 4 between the outer ring 1, the outer ring 2 2 and the inner ring 5, and the steel balls 3 are stainless steel precision steel balls. Ring 1 and outer ring 2 have a peach-shaped channel 10, and the inner ring 5 has a peach-shaped channel 2 11. The peach-shaped channel is conducive to improving the radial and axial bearing capacity of the bearing. The outer ring The outer diameter of one 1 is larger than that of the outer ring two 2, mainly to facilitate the contact between the outer ring one 1 and the outer ring two 2 when turning, and the outer ring two 2 is separated from the guide rail. The tooling is corrected to make the deformation meet the technical requirements. The cage 4 is a split structure, which is composed of twenty-three split cages, which can improve the strength of the cage 4 and facilitate installation. Each split cage has two steel ball ports, and the steel ball ports There is an interference amount, which can lock the steel ball 3 and at the same time enable the bearing to rotate flexibly. The inner ring 5 is integrated with the bearing seat 12, which saves the installation space to a greater extent; the bearing seat 15 has a pin hole 13 for installing the chain, the chain drives the bearing seat to move on the guide rail, and the chain is driven by the sprocket The transmission realizes the movement of the shell 14; one side of the inner ring 5 is provided with two pairs of lugs 8, the lugs 8 have pins 7 for installing the ball bearings 6, and the pins 7 are mounted on the lugs 8.

As shown in Figure 4, Figure 5, and Figure 6, the chain 18 drives the bearing housing to move on the guide rail 9, the chain 18 is driven by the sprocket 17, the outer ring 2 and the ball bearing roll on the horizontal section 15 of the guide rail 9, and the bearing When turning around, the outer ring 2 and the ball bearing are separated from the guide rail 9, and the two outer rings 1 are in contact with each other on the arc section 19 of the guide rail 9 and rotate to meet the requirements of turning. roll out.

Claims (3)

1. a composite guideway bearing, is characterized in that: outer ring one (1), retainer (4) between outer ring two (2) and inner ring (5) are built with steel ball (3); Retainer (4) is split-type structural, and inner ring (5) and bearing support (12) are combined into one; The side of inner ring (5) is provided with two pairs of lugs (8), and with the bearing pin (7) for installing ball bearing (6) in lug (8), bearing pin (7) is contained on lug (8); Outer ring two (2) and ball bearing (6) roll at the horizontal segment of guide rail (9), and when bearing is turn-taked, outer ring two (2) and ball bearing (6) getaway (9), two outer rings one (1) contact with each other at the arc section of guide rail (9), rotate.

2. composite guideway bearing according to claim 1, is characterized in that: described outer ring one (1), outer ring two (2) are with peach-shaped raceway groove one (10); The external diameter of outer ring one (1) is greater than the external diameter of outer ring two (2).

3. composite guideway bearing according to claim 1, is characterized in that: described inner ring (5) is with peach-shaped raceway groove two (11); With the pin-and-hole (13) for installing chain (18) in bearing support (12).