Separating type ball cage universal joint

Abstract

The utility model belongs to the technical field of rzeppa universal joints, and particularly relates to a separated rzeppa universal joint which comprises a shaft rod, a connecting rod is arranged at one end of the shaft rod, mounting grooves are formed in the periphery of the connecting rod, and an assembling wedge block is rotationally arranged in each mounting groove through a rotating shaft. The end, close to the shaft rod, of the outer surface of the assembling wedge block is higher than the other end of the assembling wedge block. When the angles of the four assembling wedge blocks need to be adjusted at the same time, the rotary knob drives the driving rod to rotate, the driving bevel gear and the follow-up bevel gear drive the threaded rod to rotate, and the movable block moves through threads and pulls the linkage rod, so that all the assembling wedge blocks rotate with the rotating shaft as the axis; when the spline shaft is damaged, the protruding ends of the assembling wedge blocks move close to the direction of the mounting groove, the assembling wedge blocks retract into the mounting groove, after all the assembling wedge blocks are pulled out of the assembling opening, the connecting rod and the connecting cylinder can be separated, and the damaged spline shaft can be conveniently and independently replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of ball cage universal joints, in particular to a separated ball cage universal joint. Background Art

[0002] The ball joint is an important transmission system component, widely used in many industries such as automobiles, engineering machinery, metallurgy, non-ferrous metals, petroleum machinery, textile machinery, special vehicles, etc. Its main function is to convert the rotational motion of the drive shaft into the linear motion of the tire and adapt to the steering requirements of the vehicle under different road conditions.

[0003] The shaft of some existing ball cage universal joints includes a spline shaft. Usually, the shaft and the spline shaft are integrated, and the spline shaft is usually meshed with components such as gears for transmission. During long-term meshing and rotation, the splines are prone to wear. When all the splines are worn, transmission cannot be achieved. Usually, the entire shaft with splines is replaced, which has high maintenance costs and serious material waste. Therefore, it is necessary to develop a separate ball cage universal joint. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0006] A split ball cage universal joint, comprising:

[0007] A shaft rod, one end of which is provided with a connecting rod, and the connecting rod is provided with mounting grooves around it, and an assembly wedge is arranged in each of the mounting grooves through a rotating shaft, and the outer surface of the assembly wedge away from the mounting groove is inclined, and the outer surface of the assembly wedge close to the shaft rod is higher than the other end, and an elastic member is arranged between the side of the assembly wedge away from its inclined surface and the mounting groove, one end of the elastic member is hinged to one side of the assembly wedge, and the other end of the elastic member is hinged in the groove of the mounting groove, and the elastic member is arranged at a position away from the rotating shaft;

[0008] A spline shaft, wherein the end of the shaft rod close to the connecting rod is separately provided with a spline shaft, and one end of the spline shaft is provided with a connecting cylinder sleeved on the outside of the connecting rod, and the connecting cylinder is provided with an assembly opening for inserting an assembly wedge block around it;

[0009] An installation cavity is provided at the connection of the shaft rod and the connecting rod. The installation cavity is located on the central axis of the shaft rod and the connecting rod. A driving component is arranged inside the installation cavity. The driving component drives four assembly wedge blocks to adjust the angle at the same time.

[0010] As a preferred solution of the split ball cage universal joint described in the utility model, the end of the connecting rod is in a "cross" shape, and the four installation grooves and the cross-section of the connecting rod are in a "well" shape as a whole.

[0011] As a preferred solution of a separate ball cage universal joint described in the utility model, the thickness of the assembly wedge is consistent with the width of the assembly opening, the inner wall of the connecting tube and the outer wall of the connecting rod fit each other, and the outer edge of the higher end of each assembly wedge is arranged in an arc shape.

[0012] As a preferred solution of a separate ball cage universal joint described in the utility model, the driving assembly includes a threaded rod rotatably arranged at the center of the left and right side walls of the installation cavity through a bearing seat, and a movable block is threadedly connected to the rod body of the threaded rod for transmission. The movable block is a rectangular body and is hinged with linkage rods on all sides, and the other ends of the four linkage rods are respectively hinged to the positions of the four assembly wedges close to the elastic parts.

[0013] As a preferred solution of a separate ball cage universal joint described in the utility model, each of the installation grooves has a sliding opening connected to the inner cavity of the installation cavity, the rod body of the linkage rod passes through the sliding opening, and the rod body diameter of the linkage rod is equal to the inner width of the sliding opening.

[0014] As a preferred solution of a separate ball cage universal joint described in the utility model, a follower bevel gear is provided at one end of the threaded rod away from the connecting rod, a drive rod is provided on the outer wall of the shaft through which a bearing sleeve rotates and penetrates, and the drive rod is arranged perpendicular to the threaded rod.

[0015] As a preferred solution of a separate ball cage universal joint described in the utility model, one end of the driving rod is located in the inner cavity of the installation cavity and is provided with a driving bevel gear, the driving bevel gear and the follower bevel gear are meshed with each other, and the other end of the driving rod is located outside the shaft and is provided with a knob.

[0016] Compared with the prior art, the beneficial effect of the utility model is: when it is necessary to adjust the angles of four assembly wedges at the same time, the driving rod is driven to rotate by the knob, and the threaded rod is driven to rotate by the active bevel gear and the follower bevel gear, and the movable block moves through the thread. At this time, the linkage rod is pulled to make all the assembly wedges rotate around the rotating shaft, and the protruding end of the assembly wedge moves toward the installation groove, and the assembly wedge retracts into the installation groove. After all the assembly wedges are pulled out of the assembly port, the connecting rod and the connecting cylinder can be separated, which is convenient for replacing the damaged spline shaft separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the cross section of the end of the connecting rod of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the connecting tube of the utility model when viewed from the side;

[0021] Figure 4 It is a schematic diagram of the structure of the internal components of the installation slot and installation cavity cross section of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the movable block and the linkage rod of the utility model;

[0023] Figure 6 It is a schematic diagram of the structure of the utility model after the assembly wedge is retracted into the installation groove and the connecting rod is separated from the connecting cylinder.

[0024] In the figure: shaft 100, connecting rod 110, mounting groove 120, rotating shaft 130, assembly wedge 140, elastic member 150, spline shaft 200, connecting cylinder 210, assembly port 220, mounting cavity 300, threaded rod 310, movable block 320, linkage rod 330, sliding port 340, follower bevel gear 350, driving rod 360, active bevel gear 370, knob 380. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Figure 1-Figure 3 The structure diagram of the first embodiment of a separate ball cage universal joint of the utility model is shown. Figure 1-Figure 3 A split ball cage universal joint of this embodiment includes a shaft rod 100, a connecting rod 110 is arranged at one end of the shaft rod 100, and a mounting groove 120 is opened around the connecting rod 110. The end of the connecting rod 110 is in a "cross" shape, and the cross-section of the four mounting grooves 120 and the connecting rod 110 is in a "well" shape as a whole. An assembly wedge 140 is rotatably arranged in each of the mounting grooves 120 through a rotating shaft 130, and the assembly wedge 140 is away from the outer surface of the mounting groove 120. The surface is inclined, and the outer surface of the assembling wedge block 140 is higher at one end close to the shaft 100 than at the other end. An elastic member 150 is arranged between the side of the assembling wedge block 140 away from its inclined surface and the mounting groove 120. The elastic member 150 can be a spring. One end of the elastic member 150 is hinged to one side of the assembling wedge block 140, and the other end of the elastic member 150 is hinged in the groove of the mounting groove 120. The elastic member 150 is arranged at a position away from the rotating shaft 130. The elastic member 150 can refer to Figure 4 Position in

[0030] The shaft rod 100 is provided with a spline shaft 200 at one end close to the connecting rod 110. A connecting cylinder 210 sleeved on the outside of the connecting rod 110 is provided at one end of the spline shaft 200. The connecting cylinder 210 is provided with an assembly opening 220 for inserting the assembly wedge 140 around it.

[0031] The thickness of the assembly wedge block 140 is consistent with the width of the assembly opening 220, and the inner wall of the connecting tube 210 and the outer wall of the connecting rod 110 fit each other, so that the connecting rod 110 fits more tightly after being inserted into the interior of the connecting tube 210. The outer edge of the higher end of each assembly wedge block 140 is arranged in an arc shape. The outer edge of the assembly wedge block 140 is arranged in an arc shape, so that when the connecting tube 210 is inserted into the outside of the connecting rod 110, the higher outer edge of the assembly wedge block 140 can be better squeezed first, so that the elastic member 150 is compressed, which facilitates the movement of the connecting tube 210.

[0032] Figure 1-Figure 6 The structure diagram of the second embodiment of a separate ball cage universal joint of the utility model is shown. Figure 1-Figure 6 , which is different from the above-mentioned embodiment, a mounting cavity 300 is provided at the connection of the shaft rod 100 and the connecting rod 110, and the mounting cavity 300 is located on the central axis of the shaft rod 100 and the connecting rod 110. A driving component is arranged inside the mounting cavity 300, and the driving component drives the four assembly wedges 140 to adjust the angle at the same time;

[0033] The driving assembly includes a threaded rod 310 rotatably arranged at the center of the left and right side walls of the inner cavity of the installation cavity 300 through a bearing seat, and a movable block 320 is screwed and driven on the rod body of the threaded rod 310. The movable block 320 is a rectangular body and is hinged with linkage rods 330 on all sides. The other ends of the four linkage rods 330 are respectively hinged to the positions of the four assembly wedge blocks 140 close to the elastic member 150. When the movable block 320 moves, the linkage rod 330 is pulled, so that all the assembly wedge blocks 140 rotate around the rotating shaft 130 as the axis, and the protruding end of the assembly wedge block 140 moves toward or away from the installation groove 120, so that the connection rod 110 and the connection cylinder 210 can be assembled or separated;

[0034] Each of the installation slots 120 has a sliding opening 340 in communication with the inner cavity of the installation cavity 300. The shaft of the linkage rod 330 passes through the sliding opening 340. The shaft diameter of the linkage rod 330 is equal to the inner width of the sliding opening 340, so that the shaft of the linkage rod 330 fits the inner wall of the sliding opening 340. When the threaded rod 310 rotates, the movable block 320 does not drive the linkage rod 330 to rotate, but adjusts the position of the movable block 320 on the shaft of the threaded rod 310.

[0035] A follower bevel gear 350 is provided at one end of the rod body of the threaded rod 310 away from the connecting rod 110, and a driving rod 360 is provided on the outer wall of the shaft rod 100 through a bearing sleeve, and the driving rod 360 is vertically arranged with the threaded rod 310. One end of the driving rod 360 is located in the inner cavity of the installation cavity 300 and is provided with a driving bevel gear 370, and the driving bevel gear 370 and the follower bevel gear 350 are meshed with each other. The other end of the driving rod 360 is located outside the shaft rod 100 and is provided with a knob 380, and the knob 380 is conveniently used to drive the driving rod 360 to rotate;

[0036] In the first embodiment, when the spline shaft 200 and the shaft rod 100 need to be disassembled, multiple assembly wedges 140 need to be pressed simultaneously to compress the elastic member 150 so that the assembly wedges 140 are received in the grooves of the installation grooves 120 and the connecting tube 210 is separated from the connecting rod 110, which is inconvenient.

[0037] To this end, in the present embodiment, when it is necessary to adjust the angles of the four assembly wedge blocks 140 at the same time, the driving rod 360 is driven to rotate by the knob 380, and the threaded rod 310 is driven to rotate by the active bevel gear 370 and the follower bevel gear 350, and the movable block 320 moves through the thread. At this time, the linkage rod 330 is pulled to make all the assembly wedge blocks 140 rotate around the rotating shaft 130, and the protruding end of the assembly wedge block 140 moves toward the mounting groove 120, and the assembly wedge block 140 retracts into the mounting groove 120. After all the assembly wedge blocks 140 are pulled out from the assembly port 220, the connecting rod 110 and the connecting cylinder 210 can be separated, so that the damaged spline shaft 200 can be replaced separately.

[0038] It should be noted that in actual production, Figure 4 The elastic member 150 can be removed and the angle of the assembly wedge 140 can be adjusted directly by the driving component. Similarly, the driving component can be removed and the thrust of the elastic member 150 can be used to push the assembly wedge 140 into the assembly port 220 to complete the connection.

[0039] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A split ball cage universal joint, characterized in that: include: A shaft (100), wherein a connecting rod (110) is disposed at one end of the shaft (100), and mounting grooves (120) are formed around the connecting rod (110), and an assembly wedge (140) is rotatably disposed in each of the mounting grooves (120) via a rotating shaft (130), and an outer surface of the assembly wedge (140) away from the mounting groove (120) is arranged in an inclined manner, and an end of the outer surface of the assembly wedge (140) close to the shaft (100) is higher than the other end, and an elastic member (150) is disposed between a side of the assembly wedge (140) away from the inclined surface and the mounting groove (120), and one end of the elastic member (150) is hinged to one side of the assembly wedge (140), and the other end of the elastic member (150) is hinged in the groove of the mounting groove (120), and the elastic member (150) is arranged at a position away from the rotating shaft (130); A spline shaft (200), wherein the spline shaft (200) is separately provided at one end of the shaft rod (100) close to the connecting rod (110), and a connecting tube (210) sleeved on the outside of the connecting rod (110) is provided at one end of the spline shaft (200), and an assembly opening (220) for inserting an assembly wedge (140) is opened around the connecting tube (210); An installation cavity (300) is provided at the connection between the shaft rod (100) and the connecting rod (110), the installation cavity (300) is located on the central axis of the shaft rod (100) and the connecting rod (110), and a driving component is provided inside the installation cavity (300), the driving component simultaneously drives four assembly wedge blocks (140) to adjust their angles.

2. A split ball cage universal joint according to claim 1, characterized in that: The end of the connecting rod (110) is in the shape of a cross, and the cross-section of the four mounting grooves (120) and the connecting rod (110) is in the shape of a well as a whole.

3. A split ball cage universal joint according to claim 1, characterized in that: The thickness of the assembly wedge (140) is consistent with the width of the assembly opening (220), the inner wall of the connecting tube (210) and the outer wall of the connecting rod (110) fit each other, and the outer edge of the higher end of each assembly wedge (140) is arranged in an arc shape.

4. A split ball cage universal joint according to claim 1, characterized in that: The driving assembly comprises a threaded rod (310) rotatably arranged at the center of the left and right side walls of the inner cavity of the installation cavity (300) through a bearing seat, and a movable block (320) is screwed and driven on the rod body of the threaded rod (310). The movable block (320) is a rectangular body and has linkage rods (330) hingedly arranged on all four sides. The other ends of the four linkage rods (330) are respectively hinged to the positions of four assembly wedge blocks (140) close to the elastic member (150).

5. A split ball cage universal joint according to claim 4, characterized in that: Each of the installation slots (120) has a sliding opening (340) in communication with the inner cavity of the installation cavity (300), the shaft of the linkage rod (330) passes through the sliding opening (340), and the shaft diameter of the linkage rod (330) is equal to the inner width of the sliding opening (340).

6. A split ball cage universal joint according to claim 4, characterized in that: A follower bevel gear (350) is provided at one end of the threaded rod (310) away from the connecting rod (110), and a driving rod (360) is rotatably penetrated through the outer wall of the shaft rod (100) via a bearing sleeve, wherein the driving rod (360) is arranged perpendicular to the threaded rod (310).

7. A split ball cage universal joint according to claim 6, characterized in that: One end of the driving rod (360) is located in the inner cavity of the installation cavity (300) and is provided with a driving bevel gear (370), the driving bevel gear (370) and the follower bevel gear (350) are meshed with each other, and the other end of the driving rod (360) is located outside the shaft (100) and is provided with a knob (380).

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