Cross shaft assembly component and coupler provided with cross shaft assembly component

Abstract

The utility model discloses a cross shaft assembly component which comprises a cross shaft with four shaft heads, the cross shaft is provided with communicated oil holes inwards from the center of each shaft head, the outer side of each shaft head is sleeved with a bearing outer ring through a roller, the center of each bearing outer ring is provided with a through hole and is provided with a transition plug screw, and an oil nozzle is installed on each transition plug screw; an annular boss matched with the end face of the corresponding shaft head is arranged at the bottom of the inner side of each bearing outer ring, a first spigot and a second spigot are formed in the two sides of each annular boss respectively, the first spigots are located at the positions of the rollers, the second spigots are located at the positions of the oil holes, and a plurality of U-shaped grooves communicated with the first spigots and the second spigots are formed in the surfaces of the annular bosses. And a sealing piece is arranged between the end part of the inner side of each bearing outer ring and the corresponding shaft head. According to the universal joint assembly, the part structure and the oil passing mode of an existing universal joint assembly are optimized, and the problems that the universal joint assembly is complex in structure, difficult to machine, long in oil passing path, high in cost, prone to oil leakage and the like are effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings and relates to a cross shaft assembly component and a coupling equipped with the assembly component. Background Art

[0002] At present, conventional cross shaft assembly components are generally used as follows Figure 6 The structure shown in the figure includes a cross shaft 1' with four shaft heads 9' and a bearing outer ring 2' sleeved on the outside of each shaft head 9', a roller 8' is arranged between each shaft head 9' and the bearing outer ring 2', an oil hole 10' is arranged inside the cross shaft 1', a groove is arranged at the inner end of the bearing outer ring 2' for placing an inner retaining ring 31', a disc spring 4' is arranged on the inner retaining ring 31' for supporting the roller 7', and a sealing ring 32' is arranged on the lower side of the inner retaining ring 31', and the sealing ring 32' is used to seal the oil circuit by cooperating with the cross shaft 1'. A stopper is arranged at the inner bottom of the bearing outer ring 2', an adjustment pad 5' is placed at the stopper, and a uniform U groove is arranged on the adjustment pad 5'. When refueling, lubricating oil is added through the oil nozzle 6', and the lubricating oil enters the stopper of the bearing outer ring 2' through the transition screw plug 7', and then enters the roller 7' through the U groove of the adjustment pad 5', playing the role of lubricating the roller 7'. The above-mentioned existing design has the following defects: 1. The groove of the original bearing outer ring 2' for rotating the inner retaining ring 31' is difficult to process and requires many steps, and the inner retaining ring 31' and the sealing ring 32' are prone to oil leakage; 2. An adjustment pad needs to be added to the stop position of the original bearing outer ring, and there are many parts, which are difficult to match and the oil path is long; 3. The inner retaining ring 31', the sealing ring 32' and the disc spring 4' are wasted, and the cost is high; 4. The structure is complex, and there are certain safety hazards in the matching of various parts. Summary of the invention

[0003] In view of the technical problems existing in the background technology, the utility model provides a cross shaft assembly component and a coupling equipped with the assembly component, which effectively solves the problems of complex structure, difficult processing, long oil flow path, high cost and easy oil leakage of the cross shaft assembly component by optimizing the parts structure and oil flow method of the existing cross shaft assembly component.

[0004] The technical solution of the utility model to solve the technical problem is as follows:

[0005] The utility model discloses a cross shaft assembly component, comprising a cross shaft with four shaft heads, wherein the cross shaft is respectively provided with interconnected oil holes from the center of each shaft head inward, a bearing outer ring is provided on the outside of each shaft head through a roller sleeve, a through hole is provided at the center of the bearing outer ring and a transition screw is installed, and an oil nozzle is installed on the transition screw; an annular boss matching with the corresponding shaft head end face is provided at the bottom of the inner side of each bearing outer ring, a first stop and a second stop are respectively provided on both sides of the annular boss, the first stop is located at the oil hole position, and the second stop is located at the roller position, a plurality of U-shaped grooves connecting the first stop and the second stop are provided on the surface of the annular boss, and a sealing member is provided between the inner end of each bearing outer ring and the corresponding shaft head.

[0006] Furthermore, the U-shaped grooves formed on the annular boss are evenly arranged.

[0007] Furthermore, the second stop is annular and is located at the junction of the roller and the shaft head.

[0008] Furthermore, the first stop is circular, and its radius is greater than or equal to half of the radius of the shaft head.

[0009] Furthermore, the seal is an annular member, whose outer side surface is set as a cylindrical surface that matches the outer ring of the bearing and is in contact with the inner side of the outer ring of the bearing, its inner side surface is set as an arc surface that matches the shaft head and is in contact with the shaft head, and its one side annular surface is in contact with the side surface of the roller.

[0010] Furthermore, the oil nozzle is threadedly connected to the transition screw plug.

[0011] The utility model discloses a coupling equipped with the cross shaft assembly component described in the technical solution.

[0012] Compared with the prior art, the cross shaft assembly component and the coupling equipped with the assembly component provided by the utility model have the following beneficial effects:

[0013] (1) The utility model has novel and reasonable design, simple structure, easy implementation, low production cost and good effect.

[0014] (2) The utility model reduces the processing steps and difficulty of the bearing outer ring by improving the structure of the bearing outer ring, so that the inner side of the bearing outer ring only needs to be processed by ordinary cylinder with low precision requirement; at the same time, the original cross-shaft assembly oil flow method requires an adjustment pad to be added to the inner side of the bearing outer ring, and only an annular boss is provided at the bottom of the inner side of the bearing outer ring, and the two sides of the annular boss are respectively provided as a first stop and a second stop, and a plurality of U-shaped grooves are evenly provided on the annular boss, thereby ensuring the structural stability of the parts, reducing the processing cost, and facilitating the oil flow.

[0015] (3) The utility model provides an annular seal for supporting the roller, and the outer side is provided with a cylindrical surface to abut against the outer ring of the bearing, and the inner side is provided with an arc surface to cooperate with the fillet of the cross shaft. While replacing the original inner retaining ring, sealing ring, disc spring and other components, the sealing effect is effectively guaranteed, and the replacement of the seal is very convenient.

[0016] (4) The utility model opens an oil hole on the cross shaft, and injects lubricating oil into the inner part of the bearing outer ring through the oil nozzle. The oiling method is simple and can be used for multiple purposes. It can oil 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, thereby effectively ensuring the lubrication effect of the entire cross shaft assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 2 It is a side structural schematic diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the outer ring of the bearing in the utility model;

[0020] Figure 4 It is a schematic diagram of the inner side top view of the outer ring of the bearing in the utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the sealing member in the utility model;

[0022] Figure 1-5 In the figure: 1. cross shaft; 2. bearing outer ring; 201. annular boss; 202. U-shaped groove; 203. first stop; 204. second stop; 3. sealing element; 31. cylindrical surface; 32. arc surface; 4. outer retaining ring; 5. oil nozzle; 6. transition screw plug; 7. roller; 8. shaft head; 9. oil hole.

[0023] Figure 6 It is a schematic diagram of the structure of the existing cross shaft assembly component;

[0024] Figure 6 In the middle: 1', cross shaft; 2', external gear sleeve; 31', inner retaining ring; 32', sealing ring; 4', disc spring; 5', adjustment pad; 6', oil nozzle; 7', transition screw plug; 8', roller; 9', shaft head; 10', oil hole; 11', outer retaining ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be the usual meanings understood by people with general skills in the field to which the disclosure belongs. The "upper", "lower", "left", "right", "front", "back", "inside", "outside" and the like used in the patent application specification and claims of the present disclosure are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly. The places not described in detail in the utility model are all known technologies of technicians in the technical field. Example

[0026] As attached Figure 1-5 As shown, the utility model is a cross shaft assembly component, including a cross shaft 1 with four shaft heads 8, the cross shaft 1 is respectively provided with a connected oil hole 9 from the center of each shaft head 8 to the inside, the outer side of each shaft head 8 is sleeved with a bearing outer ring 2 through a roller 7, the center of the bearing outer ring 2 is provided with a through hole and a transition screw plug 6 is installed, and an oil nozzle 5 is installed on the transition screw plug 6 for oiling and sealing; the bottom of the inner side of each bearing outer ring 2 is provided with an annular boss 201 that matches the end face of the corresponding shaft head 8, and the two sides of the annular boss 201 are respectively provided with a first stop 203 and a second stop 204, the second stop 204 is in a ring shape, preferably located at the junction of the roller 7 and the shaft head 8, and the first stop 203 and the second stop 204 are provided. A stopper 203 is circular and located at the oil hole 9. Its radius is preferably greater than or equal to half of the radius of the shaft head 8. The surface of the annular boss 201 is provided with a plurality of U-shaped grooves 202 connecting the first stopper 203 and the second stopper 204. The U-shaped grooves 202 provided on the annular boss 201 are evenly arranged. A seal 3 is arranged between the inner end of each bearing outer ring 2 and the corresponding shaft head 8. The seal 3 is an annular member, and its outer side surface is set as a cylindrical surface 31 adapted to the bearing outer ring 2 and abuts against the inner side of the bearing outer ring 2. Its inner side surface is set as an arc surface 32 adapted to the shaft head 8 and abuts against the shaft head 8. One side of the annular surface abuts against the side surface of the roller 7. The oil nozzle 5 is threadedly connected to the transition screw plug 6.

[0027] When in use, lubricating oil is injected through the oil nozzle 5, enters the first stop 203 through the transition screw plug 6, and then flows into the U-shaped groove 202 on the annular protrusion 201 to lubricate the end face of the cross shaft 1, and then enters the second stop 204 to lubricate the roller 7. Example

[0028] The utility model discloses a coupling equipped with the cross shaft assembly component described in embodiment 1.

Claims

1. A cross shaft assembly, comprising a cross shaft (1) having four shaft heads (8), wherein the cross shaft (1) is provided with a communicating oil hole (9) from the center of each shaft head (8) inwardly, and each shaft head (8) is provided with a bearing outer ring (2) sleeved by a roller (7) on the outer side, and a through hole is provided at the center of the bearing outer ring (2) and a transition screw plug (6) is installed, and an oil nozzle (5) is installed on the transition screw plug (6), characterized in that: An annular boss (201) matching with the end face of the corresponding shaft head (8) is arranged at the inner bottom of each bearing outer ring (2), and a first stop (203) and a second stop (204) are arranged on both sides of the annular boss (201), the first stop (203) is located at the oil hole (9), and the second stop (204) is located at the roller (7). A plurality of U-shaped grooves (202) connecting the first stop (203) and the second stop (204) are arranged on the surface of the annular boss (201), and a sealing member (3) is arranged between the inner end of each bearing outer ring (2) and the corresponding shaft head (8).

2. A cross shaft assembly according to claim 1, characterized in that: The U-shaped grooves (202) formed on the annular boss (201) are evenly arranged.

3. The cross shaft assembly according to claim 1, characterized in that: The first stop (203) is circular, and its radius is greater than or equal to half the radius of the shaft head (8).

4. The cross shaft assembly according to claim 1, characterized in that: The second stop (204) is annular and is located at the junction of the roller (7) and the shaft head (8).

5. The cross shaft assembly according to claim 1, characterized in that: The sealing member (3) is an annular member, the outer side surface of which is configured as a cylindrical surface (31) that matches the bearing outer ring (2) and contacts the inner side of the bearing outer ring (2), the inner side surface of which is configured as an arc surface (32) that matches the shaft head (8) and contacts the shaft head (8), and the annular surface on one side contacts the side surface of the roller (7).

6. The cross shaft assembly according to claim 1, characterized in that: The oil nozzle (5) is threadedly connected to the transition screw plug (6).

7. A coupling, characterized in that: Equipped with the cross shaft assembly component according to any one of claims 1 to 6.

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