A cross axle assembly and coupling

Abstract

The utility model discloses a kind of cross shaft assembly components and couplings, belong to coupler technical field. Cross shaft assembly component includes the cross shaft with four axle heads, bearing roller and bearing outer ring of being sleeved in the axle head, the sleeve ring of being set in the axle head outside, bearing roller inside, each the oil hole of being communicated is opened in the center of the axle head inward, and the axle head end face is equipped with threaded hole;The sleeve ring end face is provided with the annular platform that is matched with corresponding axle head end face, the through-hole is opened in the center of the annular platform and is used for installing oil nozzle with the oil hole, the annular platform is provided with several counterbores and the threaded hole position corresponding, fastener is built-in in the counterbore and is used for fixing the sleeve ring;Annular platform is opened in the slot extended to the circumferential surface of sleeve ring, the slot and counterbore are staggered distribution, and the oil passage formed by the bearing outer ring, oil hole, slot, bearing roller is sealed using sealing element.

Description

Technical Field

[0001] This utility model belongs to the field of coupling technology, and more specifically, relates to a cross shaft assembly and coupling. Background Technology

[0002] Currently, conventional cross shaft assembly components generally adopt the following... Figure 7 The structure shown includes a cross shaft 1' with four shaft ends 9' and bearing outer rings 2' sleeved on the outside of each shaft end 9'. Rollers 8' are provided between each shaft end 9' and the bearing outer ring 2'. An oil hole 10' is provided inside the cross shaft 1'. A groove is provided at the inner end of the bearing outer ring 2' for placing an inner retaining ring 31'. A disc spring 4' is provided on the inner retaining ring 31' to hold the rollers 7' in place. A sealing ring 32' is provided below the inner retaining ring 31', which, through its cooperation with the cross shaft 1', seals the oil passage. A stop is provided at the bottom inner side of the bearing outer ring 2', and an adjusting shim 5' is placed at the stop. A uniform U-groove is provided on the adjusting shim 5'. During lubrication, lubricating oil is added through the grease nipple 6'. The lubricating oil enters the stop of the bearing outer ring 2' through the transition plug 7', and then enters the position of the rollers 7' through the U-groove of the adjusting shim 5', thus lubricating the rollers 7'.

[0003] The existing design has the following defects: 1) During actual operation, the cross shaft 1' rubs against the rollers, and after long-term use, the cross shaft head and its accessories are severely worn; 2) An adjustment shim needs to be added to the outer ring stop position of the bearing, which involves many parts, makes matching difficult, and results in a long oil passage; 3) The cross shaft 1' needs to be replaced every once in a while, which is costly; 4) The structure is complex, and there are certain safety hazards in the matching of various parts. Summary of the Invention

[0004] 1. The problem to be solved

[0005] In view of the technical problems existing in the background art, the present invention provides a cross shaft assembly and coupling, which effectively reduces the frictional impact of bearing rollers on the shaft head.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] The first aspect of this utility model provides a cross shaft assembly, comprising: a cross shaft with four shaft ends, bearing rollers and bearing outer rings sleeved on the shaft ends, and a collar disposed between the shaft ends and the bearing rollers, wherein each shaft end has an inwardly connected oil hole at its center, and the end face of each shaft end has a threaded hole.

[0009] The end face of the collar is provided with an annular platform that mates with the corresponding end face of the shaft head. A through hole is provided at the center of the annular platform to correspond with the oil hole for installing an oil nozzle. Several countersunk holes are provided on the annular platform to correspond with the position of the threaded hole. Fasteners are built into the countersunk holes to fix the collar.

[0010] The annular platform has a slot extending from the through hole to the circumference of the bearing ring. The slot and countersunk hole are distributed alternately. The oil passage formed by the bearing outer ring, oil hole, slot and bearing roller is sealed by a seal.

[0011] According to any embodiment of the first aspect of the present invention, the center line of the slot is a straight line and is opened in the radial direction.

[0012] According to any embodiment of the first aspect of the present invention, the cross-sectional shape of the slot is U-shaped, V-shaped or rectangular; the slot is evenly arranged at equal angles on the annular platform, preferably at angles of 30°, 45° or 60°.

[0013] According to any embodiment of the first aspect of the present invention, the countersunk holes are uniformly arranged at equal angles on the annular platform, preferably at angles of 30°, 45° or 60°.

[0014] According to any embodiment of the first aspect of the present invention, the shaft head is provided with a stop, and the open end of the collar extends to the end of the stop and abuts against the stop.

[0015] According to any embodiment of the first aspect of the present invention, the countersunk hole is disposed on the annular platform between two adjacent slots, preferably located in the middle and close to the circumferential surface of the collar.

[0016] According to any embodiment of the first aspect of the present invention, the cross-sectional shape of the slot is U-shaped, and the number of slots is 6, with the depths of two adjacent U-shaped slots being the same or different.

[0017] According to any embodiment of the first aspect of the present invention, the fastener is an internal hexagon screw.

[0018] According to any embodiment of the first aspect of the present invention, the sealing element is an annular element, the outer side of which is provided with a cylindrical surface adapted to the outer ring of the bearing and abuts against the cross shaft.

[0019] The second aspect of this utility model provides a coupling equipped with the cross shaft assembly described in the first aspect.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] (1) By improving the cross shaft structure, this utility model reduces the frictional impact of the rollers and bearing outer ring on the cross shaft, thus ensuring the integrity and stability of the main components of the cross shaft.

[0023] (2) This utility model eliminates the need for an adjustment shim to be added inside the bearing outer ring for the original cross shaft assembly oil passage method. Instead, multiple U-shaped grooves are evenly opened on the outer side of the ring, which ensures the structural stability of the parts, reduces processing costs, and facilitates oil passage.

[0024] (3) The present invention provides an oil hole on the bearing ring, through which lubricating oil is injected into the bearing outer ring. The lubrication method is simple and multi-purpose. It can lubricate the connection between the bearing outer ring and the cross shaft, the roller and the bearing outer ring, and the connection between the roller and the cross shaft, effectively ensuring the lubrication effect of the entire cross shaft assembly.

[0025] (4) This utility model has a novel and reasonable design, a simple structure, is easy to implement, has low production cost, and good effect. Attached Figure Description

[0026] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of this utility model. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0027] Figure 1 This is a structural schematic diagram of the cross shaft assembly of this utility model;

[0028] Figure 2 This is a side view of the cross shaft assembly of this utility model;

[0029] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along line AA;

[0030] Figure 4 This is a schematic diagram of the collar structure of the cross shaft assembly of this utility model;

[0031] Figure 5 This is a top view of the collar of the cross shaft assembly of this utility model;

[0032] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure along line BB;

[0033] Figure 7 This is a structural schematic diagram of an existing cross shaft assembly;

[0034] In the picture:

[0035] 100. Cross shaft; 200. Ring; 201. Annular platform; 202. U-groove; 203. Countersunk hole; 204. Through hole; 205. Circumferential surface; 300. Socket head screw; 400. Bearing roller; 500. Bearing outer ring; 600. Seal; 700. Oil hole; 800. Shaft end; 801. Stop.

[0036] Figure 7 In the middle: 1', cross shaft; 2', washer; 3', inner retaining ring; 4', roller; 5', bearing outer ring; 6', seal; 7', oil hole; 8', shaft end. Detailed Implementation

[0037] The following detailed description and exemplary embodiments of the present invention can be better understood in conjunction with the accompanying drawings, wherein the elements and features of the present invention are identified by reference numerals.

[0038] The following detailed description of exemplary embodiments of the present invention refers to the accompanying drawings, which form part of the description and illustrate exemplary embodiments in which the present invention can be implemented. It should be understood that the following text is merely used to describe one or more specific embodiments of the present invention and does not strictly limit the specific scope of protection claimed by the present invention. The structures, proportions, sizes, etc., illustrated in the accompanying drawings are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are only for clarity of description and are not used to limit the scope of implementation. Changes or adjustments in their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of the present invention.

[0039] Example 1

[0040] like Figures 1 to 6As shown, the cross shaft assembly of this embodiment includes a cross shaft 100 with four shaft ends 800. Each cross shaft 100 has a connected oil hole 700 extending inward from the center of each shaft end 800. Each shaft end 800 has a stop 801 on its outer side. The open end of the sleeve 200 extends to the end of the stop 801 and abuts against the stop 801. The end face of the shaft end 800 has a threaded hole. Each sleeve 200 has a bearing outer ring 500 sleeved on its outer side by rollers. The bearing outer ring 500 has a through hole 204 at its center for lubrication.

[0041] Each of the aforementioned rings 200 has an annular platform 201 on its outer end face that mates with the end face of the corresponding bearing outer ring 500. The annular platform 201 has a through hole 204 at its center, which is paired with the oil hole 700 for installing an oil nozzle. The oil nozzle can be connected to an external lubrication device. The annular boss has six slots in the radial direction. The cross-sectional shape of the slots is U-shaped, V-shaped, or rectangular. In this embodiment, the cross-sectional shape of the slots is U-shaped. The depth of two adjacent U-shaped slots 202 can be set to be the same or different. For example, the depth of one U-shaped slot 202 is slightly larger than that of another U-shaped slot 202. This design makes the oil passage of each U-shaped slot 202 slightly different, which can improve the problem of oil supply (lubricating oil) fluctuation caused by unstable oil pressure.

[0042] like Figure 4 As shown, the slots are evenly spaced at equal angles on the annular platform 201, preferably at angles of 30°, 45°, or 60°. The centerline of the slot is a straight line, an S-curve, or a broken line. Figure 4 In this process, the U-shaped grooves 202 are arranged radially with a spacing of 60°, which can reduce the length of the oil supply path.

[0043] Furthermore, such as Figure 5 and Figure 6 As shown, the outer end face of the collar 200 is provided with countersunk holes 203, which are staggered with the U-shaped grooves 202. The countersunk holes 203 are evenly distributed at equal angles on the annular platform 201, preferably at angles of 30°, 45°, or 60°. The countersunk holes 203 are evenly distributed on the outer end face of the collar 200. For example, the countersunk holes 203 are located on the annular platform 201 between two adjacent grooves, preferably in the middle and close to the circumferential surface 205 of the collar 200. The socket head cap screws are evenly distributed on the outer end face of the collar 200.

[0044] In this embodiment, as Figure 3As shown, a sealing element 600 is provided between the inner end of the outer ring 500 of each bearing and the corresponding shaft head 800; the sealing element 600 is an annular part, its outer surface is configured as a cylindrical surface adapted to the outer ring 500 of the bearing and abuts against the inner side of the outer ring 500 of the bearing, its inner surface is configured to adapt to the shaft head 800 and abut against the shaft head 800, and one side of its annular surface abuts against the side of the roller, for sealing the oil passage formed by the outer ring 500 of the bearing, the oil hole 700, the groove and the bearing roller 400, to ensure that the cross shaft assembly does not leak oil.

[0045] In application, the sleeve 200 is fixed to the shaft head 800 by an internal hex bolt. The end face of the internal hex bolt is flush with the end face of the countersunk hole 203, so that no sliding friction is generated. This is used to protect the shaft head 800. The inner end face of the bearing roller 400 and the bearing outer ring 500 rubs against the sleeve 200, which can effectively protect the cross shaft 100.

[0046] In application, lubricating oil is injected through the grease nipple. The lubricating oil enters the bearing ring 200 through the outer ring 500, and then flows into the U-shaped groove 202 on the annular platform 201, which serves to lubricate the end face of the bearing ring 200. Then it enters the bearing roller 400 on the inner side of the arc surface of the bearing ring 200 for lubrication.

[0047] The cross shaft 100 assembly of this utility model is the core component of the coupling. By optimizing the part structure and oil passage method of the existing cross shaft 100 assembly, it effectively solves the problems of complex structure, difficult processing, long oil passage path, high cost and easy oil leakage of the cross shaft 100 assembly.

[0048] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A cross shaft assembly, characterized in that, include: A cross shaft (100) with four shaft heads (800), bearing rollers (400) sleeved on the shaft heads (800) and bearing outer rings (500), each shaft head (800) having an inwardly connected oil hole (700) at its center, and a threaded hole on the end face of the shaft head (800). A collar (200) is disposed between the shaft head (800) and the bearing roller (400). The end face of the collar (200) is provided with an annular platform (201) that mates with the end face of the corresponding shaft head (800). A through hole (204) is provided at the center of the annular platform (201) and is used to install an oil nozzle in relation to the oil hole (700). A plurality of countersunk holes (203) are provided on the annular platform (201) that correspond to the positions of the threaded holes. Fasteners are built into the countersunk holes (203) for fixing the collar (200). The annular platform (201) has a groove extending from the through hole (204) to the circumferential surface (205) of the bearing ring (200). The groove and the countersunk hole (203) are staggered. The oil passage formed by the bearing outer ring (500), oil hole (700), groove and bearing roller (400) is sealed by a seal (600).

2. The cross shaft assembly according to claim 1, characterized in that, The centerline of the slot is a straight line and is opened in the radial direction.

3. The cross shaft assembly according to claim 2, characterized in that, The cross-sectional shape of the slot is U-shaped, V-shaped or rectangular; the slots are evenly arranged at equal angles on the annular platform (201).

4. The cross shaft assembly according to claim 3, characterized in that, The countersunk holes (203) are evenly arranged at equal angles on the annular platform (201).

5. The cross shaft assembly according to claim 4, characterized in that, The shaft head (800) is provided with a stop (801), and the open end of the collar (200) extends to the end of the stop (801) and abuts against the stop (801).

6. The cross shaft assembly according to claim 5, characterized in that, The countersunk hole (203) is located on the annular platform (201) between two adjacent slots.

7. The cross shaft assembly according to claim 6, characterized in that, The groove cross-section is U-shaped, and there are 6 of them. The depths of two adjacent U-shaped grooves (202) are the same or different.

8. The cross shaft assembly according to claim 7, characterized in that, The fastener is an internal hex socket screw (300).

9. The cross shaft assembly according to claim 1, characterized in that, The sealing element (600) is an annular element, and its outer side is provided with a cylindrical surface that is adapted to the outer ring (500) of the bearing and abuts against the cross shaft (100).

10. A coupling equipped with a cross shaft assembly as described in any one of claims 1-9.

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