Cross shaft universal joint shaft sleeve with adjustable pre-tightening force

Abstract

The utility model discloses a pretightening force adjustable cross axle universal joint shaft sleeve, which comprises a universal joint shaft sleeve and a cross axle, the two ends of the universal joint shaft sleeve are movably connected with the cross axle, the two ends of the universal joint shaft sleeve are provided with fixed cover plates, the fixed cover plates are provided with limiting ring blocks matched with the end parts of the cross axle, and the limiting ring blocks are connected with the universal joint shaft sleeve. Sliding sleeves movably connected with the cross shaft are arranged in grooves in the two ends of the universal joint shaft sleeve, and an insertion column extending into the cross shaft is arranged on the limiting ring block. When the universal joint is used for a long time, a wear-resisting sliding sleeve is abraded, a gap between a shaft sleeve and a cross shaft is enlarged, and when the device rotates, deviation occurs, inserting columns are inserted into inserting holes, four sets of limiting blocks of the universal joint extend outwards to be correspondingly inserted into four sets of limiting grooves, and limiting between the inserting columns and the inserting holes is completed; therefore, the universal joint pin can be limited, the universal joint pin is kept at the original position and prevented from deviating, and the stability of the universal joint pin is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to universal joint technical field, concretely, a kind of cross shaft universal joint shaft sleeve with adjustable pre-tightening force. BACKGROUND

[0002] Universal joint is universal joint, it is the machine part that realizes variable angle power transmission, for the position that needs to change transmission axis direction, it is the joint component of the universal transmission device of automobile drive system, universal joint is installed between the front axle half shaft that is responsible for driving and steering and wheel, the shaft head of cross shaft universal joint is generally equipped with shaft sleeve.

[0003] Such as prior art 202122309223.4 discloses a kind of novel cross shaft universal joint, by the cooperation of cross shaft universal joint main body, knuckle one, knuckle two and limiting protection device, solve the problem that the sudden increase of cross shaft universal joint rotation angle will be bearing sleeve burst in the process of using existing cross shaft universal joint, lead to bearing failure, prone to affect the safe operation of cross shaft universal joint, reduce the cross shaft universal joint in field environment use safety problem.But universal joint is usually inserted into the mounting hole of shaft sleeve when assembling, sliding sleeve is provided between the two, sliding sleeve will be worn with cross shaft when universal joint is used for a long time, lead to cross shaft offset in shaft sleeve, accelerate device damage, there is no related anti-offset device.

[0004] For the problems in the related art, no effective solution has been proposed so far. UTILITY MODEL CONTENT

[0005] For the problems in the related art, the utility model provides a cross shaft universal joint shaft sleeve with adjustable pre-tightening force to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the following specific technical solutions:

[0007] A cross shaft universal joint shaft sleeve with adjustable pre-tightening force, comprising a universal joint shaft sleeve and a cross shaft, the two ends of the universal joint shaft sleeve are movably connected with the cross shaft, the two ends of the universal joint shaft sleeve are provided with fixed cover plates, the fixed cover plates are provided with limiting ring blocks that fit the end portions of the cross shaft, the slotted ends of the universal joint shaft sleeve are provided with sliding sleeves movably connected with the cross shaft, the limiting ring blocks are provided with insertion columns extending into the cross shaft, the end portions of the cross shaft are provided with insertion holes matching the insertion columns, and the insertion columns are provided with reinforcing mechanisms in contact with the insertion holes.

[0008] Preferably, the reinforcing mechanism includes a through hole formed in the middle of the insertion column, a tapered column is movably connected in the through hole, and a limiting block is provided around the insertion column and extends outward in contact with the outer wall of the tapered column.

[0009] As preferred, the number of the limiting blocks is four groups, and the insertion column is provided with a stroke hole for the movement of the limiting block, and the stroke hole is provided with a limiting rod penetrating through the limiting block.

[0010] As preferred, the limiting block is provided with a hole matching the limiting rod, and the inside of the insertion hole is provided with a limiting slot matching the limiting block.

[0011] As preferred, one end of the conical column is movably connected with a threaded rod extending to the outside of the fixed cover plate, and the end of the threaded rod is provided with a locking knob.

[0012] As preferred, the fixed cover plate is connected with the universal joint shaft sleeve through a bolt.

[0013] As preferred, the bottom of the fixed cover plate is connected with a sealing gasket, and the tail of the bolt penetrates through the sealing gasket.

[0014] The beneficial effects of the utility model are that: power is transmitted to the shaft sleeve through the output shaft, and then transmitted to the cross shaft through the shaft sleeve and the wear-resistant sliding sleeve; the long-time use of the universal joint can cause the wear of the wear-resistant sliding sleeve, the increase of the gap between the shaft sleeve and the cross shaft, the deviation of the device during rotation, the insertion of the insertion column into the insertion hole, the increase of the pre-tightening force, the outward extension of the four groups of limiting blocks into the four groups of limiting slots, the limiting between the insertion column and the insertion hole, the limiting of the cross shaft, the prevention of the deviation of the cross shaft, and the improvement of the stability. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description can only be some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a structure schematic view of a pre-tightening force adjustable cross shaft universal joint shaft sleeve according to the utility model embodiment;

[0017] Figure 2 It is a partial structure schematic view of a pre-tightening force adjustable cross shaft universal joint shaft sleeve according to the utility model embodiment;

[0018] Figure 3 It is a structure schematic view of a reinforcing mechanism in a pre-tightening force adjustable cross shaft universal joint shaft sleeve according to the utility model embodiment;

[0019] Figure 4 This is a schematic diagram of the insert post in a cross shaft universal joint bushing with adjustable preload according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the conical column in a cross shaft universal joint bushing with adjustable preload according to an embodiment of the present invention.

[0021] In the picture:

[0022] 1. Universal joint bushing; 2. Cross shaft; 3. Fixed cover plate; 4. Limiting ring block; 5. Insert pin; 6. Insertion hole; 7. Through hole; 8. Tapered pin; 9. Limiting block; 10. Stroke hole; 11. Limiting rod; 12. Hole; 13. Limiting groove; 14. Threaded rod; 15. Locking knob; 16. Bolt. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] According to an embodiment of the present invention, a cross shaft universal joint bushing with adjustable preload is provided.

[0025] Example 1;

[0026] like Figures 1-5 As shown, the adjustable preload universal joint bushing according to an embodiment of the present invention includes a universal joint bushing 1 and a universal joint 2. The universal joint bushing 1 is movably connected to the universal joint 2 at both ends. The universal joint bushing 1 is provided with a fixed cover plate 3 at both ends. The fixed cover plate 3 is provided with a limiting ring block 4 that fits with the end of the universal joint 2. The universal joint bushing 1 has slots at both ends that are provided with sliding sleeves that are movably connected to the universal joint 2. The limiting ring block 4 is provided with a post 5 that extends into the universal joint 2. The end of the universal joint 2 is provided with a insertion hole 6 that matches the post 5. The post 5 is provided with a reinforcing mechanism that abuts against the insertion hole 6.

[0027] Example 2;

[0028] like Figures 1-5As shown, the reinforcing mechanism includes a through hole 7 opened in the middle of the insertion column 5, a tapered column 8 movably connected in the through hole 7, a limiting block 9 arranged around the insertion column 5 and in contact with the outer wall of the tapered column 8 and extending to the outside, the number of the limiting block 9 is four groups, and a stroke hole 10 is opened in the insertion column 5 for the movement of the limiting block 9, a limiting rod 11 is arranged in the stroke hole 10 and penetrates the limiting block 9, a hole 12 is opened in the limiting block 9 and matched with the limiting rod 11, and a limiting groove 13 matched with the limiting block 9 is opened in the inside of the insertion hole 6.

[0029] Embodiment three;

[0030] As shown in the figure, Figures 1-5 One end of the tapered column 8 is movably connected with a threaded rod 14 extending to the outside of the fixed cover plate 3, the end of the threaded rod 14 is provided with a locking knob 15, the fixed cover plate 3 is connected with the universal joint shaft sleeve 1 through a bolt 16, the bottom of the fixed cover plate 3 is connected with a sealing gasket, and the tail of the bolt 16 penetrates the sealing gasket.

[0031] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process is described in detail below.

[0032] In actual application, the universal joint shaft sleeve 1 is movably connected with the cross shaft 2, the insertion column 5 is inserted into the inside of the insertion hole 6, then the locking knob 15 is rotated to drive the threaded rod 14 to rotate and drive the tapered column 8 to move, when the tapered column 8 moves to the left, the outer wall of the tapered column 8 extrudes each limiting block 9, so that the four groups of limiting blocks move outward along the limiting rod 11, so that the four groups of limiting rods 11 are respectively inserted into the inside of the four groups of limiting grooves 13, the limiting between the insertion column 5 and the insertion hole 6 is completed, so that the insertion column 5 is limited and fixedly connected with the cross shaft 2, so that it remains in the original position and prevents it from deviating.

[0033] As described above, by means of the above technical scheme of the utility model, the power is transmitted to the shaft sleeve through the output shaft, then transmitted to the cross shaft through the shaft sleeve and the wear-resistant sliding sleeve, the long-time use of the universal joint can cause the wear of the wear-resistant sliding sleeve, the gap between the shaft sleeve and the cross shaft becomes larger, the device deviates when rotating, the insertion column 5 is inserted into the insertion hole 6, the pre-tightening force is improved, the four groups of limiting blocks 9 extend outward and are respectively inserted into the inside of the four groups of limiting grooves 13, the limiting between the insertion column 5 and the insertion hole 6 is completed, so that the cross shaft 2 can be limited and kept in the original position, preventing it from deviating and improving its stability.

[0034] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pre-tightening force adjustable cross shaft universal joint bushing, characterized by, The utility model provides a universal joint axle sleeve (1) and cross axle (2), the both ends of universal joint axle sleeve (1) are movably connected with cross axle (2), and the both ends of universal joint axle sleeve (1) are equipped with fixed cover plate (3), the fixed cover plate (3) is equipped with with the cross axle (2) end portion fitting's limit ring block (4), and the slotted both ends of universal joint axle sleeve (1) are equipped with with the cross axle (2) movably connected slide sleeve, the limit ring block (4) is equipped with with the extension of the cross axle (2) into the plug -in post (5), the end portion of cross axle (2) is equipped with with the plug -in post (5) matched plug -in hole (6), and the plug -in post (5) is equipped with with the plug -in hole (6) resistance's reinforcing mechanism.

2. The pre-load adjustable universal joint bushing of claim 1, wherein, The reinforcing mechanism includes a through hole (7) formed in the middle of the plug-in post (5), a tapered column (8) movably connected in the through hole (7), and a limiting block (9) arranged around the outer wall of the tapered column (8) and extending outward.

3. A pre-load adjustable universal joint bushing according to claim 2, wherein, The number of limiting blocks (9) is four, and a stroke hole (10) is formed in the plug-in post (5) for the movement of the limiting blocks (9). A limiting rod (11) is arranged in the stroke hole (10) and penetrates the limiting blocks (9).

4. The pre-load adjustable universal joint cup of claim 3, wherein, A hole (12) is formed in the limiting block (9) and matched with the limiting rod (11), and a limiting groove (13) is formed in the inside of the plug-in hole (6) and matched with the limiting block (9).

5. A pre-load adjustable universal joint bushing according to claim 4, wherein, One end of the tapered column (8) is movably connected with a threaded rod (14) extending outward from the fixed cover plate (3), and the end of the threaded rod (14) is provided with a locking knob (15).

6. The pre-load adjustable universal joint bushing of claim 1, wherein, The fixed cover plate (3) is connected with the universal joint axle sleeve (1) by a bolt (16).

7. A pre-load adjustable universal joint bushing according to claim 6, wherein, The bottom of the fixed cover plate (3) is connected with a sealing gasket, and the tail of the bolt (16) penetrates the sealing gasket.

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