CN218913513U - Automatic locking device for axial and radial fixing of universal joint transmission shaft - Google Patents
Automatic locking device for axial and radial fixing of universal joint transmission shaft Download PDFInfo
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- CN218913513U CN218913513U CN202223584341.7U CN202223584341U CN218913513U CN 218913513 U CN218913513 U CN 218913513U CN 202223584341 U CN202223584341 U CN 202223584341U CN 218913513 U CN218913513 U CN 218913513U
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- spring seat
- pin
- spring
- universal joint
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Abstract
The utility model provides an automatic locking device for axial and radial fixing of a universal joint transmission shaft, which comprises a main body, a spring seat, a first nut, a spring and a taper pin, wherein an inner spline hole and a stepped hole are formed in the main body; the large end of the taper pin is provided with a blind hole, a spring is arranged in the blind hole, and the taper pin is clamped in the stepped hole; a step hole is formed in the spring seat, the protruding end of the spring extends into the step hole, an inner hexagonal hole is formed in one end, away from the step hole, of the spring seat, and an external thread is formed in the circumferential surface of the spring seat; the automatic locking device can automatically compensate and eliminate gaps in time, maintain a normal connection locking state, ensure the normal operation of a transmission system, ensure that the machine always maintains a good locking state, and improve the reliability and durability of mechanical transmission.
Description
Technical Field
The utility model belongs to the technical field of transmission shafts, and particularly relates to an automatic locking device for axial and radial fixation of a universal joint transmission shaft.
Background
At present, the universal joint transmission shaft used in agricultural machinery in China is generally fixed in a single-pin or double-pin fixing mode in the axial and radial directions adopted by the connection of the universal joint transmission shaft and a spline shaft, and as shown in fig. 1, the universal joint transmission shaft is in a double-pin fixing mode, and the pin hole are in clearance fit. Because the position and the state of the universal joint transmission shaft are randomly changed when the universal joint transmission shaft works, the axial force direction, the radial force direction and the stress magnitude borne by the fixing pin are also randomly changed, and because the clearance fit adopted by the pin and the pin hole is adopted, larger forward and backward axial impact load and radial resilience force can be generated when the universal joint transmission shaft works, the deformation damage of the pin, the deformation damage of the spline shaft and the spline sleeve, the damage of the bearing on the shaft and the like are easily caused, and the transmission system cannot work normally.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides an automatic locking device for axially and radially fixing a universal joint transmission shaft.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides an automatic locking device of universal joint transmission shaft axial radial fixation, includes main part, spring holder, first nut, spring, taper pin, be provided with interior splined hole, shoulder hole on the main part, interior splined hole is connected with the integral key shaft and is formed the power transmission chain, be provided with the shoulder hole in the perpendicular direction of interior splined hole axis, shoulder hole runs through partial interior splined hole setting, be provided with the internal thread in the shoulder hole big end;
the taper pin is clamped in the stepped hole, and the large end of the taper pin is connected with the spring seat;
the spring seat is internally provided with a step hole, the step hole is arranged facing the taper pin, the protruding end of the spring extends into the step hole, one end of the spring seat, which is away from the step hole, is provided with an inner hexagonal hole, the circumferential surface of the spring seat is provided with an external thread, and the internal thread is matched with the external thread;
and the first nut is screwed on the spring seat.
Further, the inner spline hole further comprises a pin hole, and the pin hole and the stepped hole are symmetrically arranged on the inner spline hole.
Further, a cylindrical pin is arranged in the pin hole, and one end of the cylindrical pin is provided with a gasket and a second nut which are locked and fixed.
Further, a round table is arranged at one end, close to the spring seat, of the taper pin, and the round table is embedded into the step hole.
Further, the first nut is configured as a lock nut.
Further, the front end of the stepped hole is provided with a taper hole, and the taper hole is matched with the taper pin.
The beneficial effects are that: according to the automatic locking device for axially and radially fixing the universal joint transmission shaft, one or two automatic locking devices with radial gaps are arranged in the direction perpendicular to the axial line of the spline hole of the main body part of the universal joint transmission shaft, so that the spline hole of the main body part of the universal joint transmission shaft is always in zero gap when being matched with a spline shaft, when the universal joint transmission shaft works for a certain time, a pin is worn, and then the gaps are automatically compensated in time when the radial gaps are generated, the automatic locking devices can automatically compensate and eliminate the gaps, the normal connection locking state is maintained, the normal work of a transmission system is ensured, the machine is always in a good locking state, and the safety, the reliability and the durability of mechanical transmission are improved.
Drawings
FIG. 1 is a double pin attachment of a universal joint drive shaft to a spline shaft as described in the background;
FIG. 2 is a cross-sectional view of an axially and radially fixed automatic locking device for a universal joint drive shaft provided by the utility model;
FIG. 3 is a cross-sectional view of the body of the present utility model;
FIG. 4 is a half cross-sectional view of the installation of a spring seat, spring and taper pin of the present utility model;
FIG. 5 is a half cross-sectional view of the taper pin of the present utility model;
FIG. 6 is a half cross-sectional view of a spring seat according to the present utility model.
In the figure: the nut comprises a main body 1, a spline hole in the main body 101, a stepped hole in the main body 102, a pin hole in the main body 103, a spring seat 2, a stepped hole in the main body 201, a hexagonal hole in the main body 202, a first nut 3, a spring 4, a taper pin 5, a blind hole 501, a round platform 502, a cylindrical pin 6, a washer 7 and a second nut 8.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
As shown in fig. 2-6, the axial and radial fixed automatic locking device of the universal joint transmission shaft provided by the utility model comprises a main body 1, a spring seat 2, a first nut 3, a spring 4 and a taper pin 5, wherein an inner spline hole 101 and a stepped hole 102 are arranged on the main body 1, the inner spline hole 101 is connected with a spline shaft to form a power transmission chain, the stepped hole 102 is arranged in the vertical direction of the axis of the inner spline hole 101, the stepped hole 102 penetrates through part of the inner spline hole 101, and an internal thread is arranged in the large end of the stepped hole 102;
the taper pin 5 is provided with a blind hole 501 at the large end of the taper pin 5, a spring 4 is installed in the blind hole 501, the spring 4 protrudes out of the blind hole 501, the taper pin 5 is clamped in the stepped hole 102, and the large end of the taper pin 5 is connected with the spring seat 2;
the spring seat 2 is internally provided with a step hole 201, the step hole 201 faces the taper pin 5, the protruding end of the spring 4 stretches into the step hole 201, one end of the spring seat 2, which is away from the step hole 201, is provided with an inner hexagonal hole 202, the circumferential surface of the spring seat 2 is provided with an external thread, the internal thread is matched with the external thread, and the inner hexagonal hole 202 assists the spring seat 2 to be screwed into the step hole 102;
a first nut 3, the first nut 3 is screwed on the spring seat 2.
On the basis of the embodiment, the inner spline hole 101 further comprises a pin hole 103, and the pin hole 103 and the stepped hole 102 are symmetrically arranged on the inner spline hole 101.
On the basis of the embodiment, a cylindrical pin 6 is arranged in the pin hole 103, and one end of the cylindrical pin 6 is provided with a washer 7 and a second nut 8 for locking and fixing.
On the basis of the embodiment, a round table 502 is arranged at one end, close to the spring seat 2, of the taper pin 5, and the round table 502 is embedded into the stepped hole 201, so that the connection stability of the taper pin 5 and the spring seat 2 is improved.
On the basis of the embodiment, the first nut 3 is set to be a locking nut, the repeated utilization rate is high, the locking force is not reduced, and the original locking can be kept.
On the basis of the embodiment, the front end of the stepped hole 102 is provided with a taper hole, and the taper hole is matched with the taper pin 5.
Working principle:
the utility model relates to an automatic locking device for axial and radial fixing of a universal joint transmission shaft, wherein a main body 1 is a main body part of the universal joint transmission shaft, one or two automatic locking devices with radial gaps are arranged in the vertical direction of the axis of a spline hole 101 in the main body part of the universal joint transmission shaft;
The basic principle, main features and advantages of the present utility model are shown and described above, and the front, back, left and right are not specific, mainly for more intuitively explaining the technical solution, but not limiting. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concept and features of the present utility model, and the present utility model can be implemented by those skilled in the art without limiting the scope of the utility model, therefore, all equivalent changes or modifications that are made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (5)
1. An automatic locking device for axial and radial fixation of a universal joint transmission shaft is characterized in that: the novel power transmission device comprises a main body (1), a spring seat (2), a first nut (3), a spring (4) and a taper pin (5), wherein an inner spline hole (101) and a stepped hole (102) are formed in the main body (1), the inner spline hole (101) is connected with a spline shaft to form a power transmission chain, the stepped hole (102) is formed in the vertical direction of the axis of the inner spline hole (101), the stepped hole (102) penetrates through part of the inner spline hole (101), and internal threads are formed in the large end of the stepped hole (102);
the taper pin (5), the taper pin (5) is provided with a blind hole (501) at the big end, a spring (4) is installed in the blind hole (501), the spring (4) protrudes out of the blind hole (501), the taper pin (5) is clamped in the stepped hole (102), and the big end of the taper pin (5) is connected with the spring seat (2);
the spring seat (2), be provided with step hole (201) in spring seat (2), step hole (201) set up towards taper pin (5), spring (4) protruding end stretches into in step hole (201), spring seat (2) deviate from step hole (201) one end be provided with interior hexagonal hole (202), spring seat (2) circumference is provided with the external screw thread, the internal screw thread with the external screw thread cooperation sets up;
a first nut (3), wherein the first nut (3) is screwed on the spring seat (2);
the inner spline hole (101) is characterized by further comprising a pin hole (103), wherein the pin hole (103) and the stepped hole (102) are symmetrically arranged on the inner spline hole (101).
2. The universal joint transmission shaft axial and radial fixing automatic locking device according to claim 1, wherein: a cylindrical pin (6) is arranged in the pin hole (103), and a gasket (7) and a second nut (8) are arranged at one end of the cylindrical pin (6) and locked and fixed.
3. The universal joint transmission shaft axial and radial fixing automatic locking device according to claim 1, wherein: one end of the taper pin (5) close to the spring seat (2) is provided with a round table (502), and the round table (502) is embedded into the step hole (201).
4. The universal joint transmission shaft axial and radial fixing automatic locking device according to claim 1, wherein: the first nut (3) is configured as a lock nut.
5. The universal joint transmission shaft axial and radial fixing automatic locking device according to claim 1, wherein: the front end of the stepped hole (102) is provided with a taper hole, and the taper hole is matched with the taper pin (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223584341.7U CN218913513U (en) | 2022-12-31 | 2022-12-31 | Automatic locking device for axial and radial fixing of universal joint transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223584341.7U CN218913513U (en) | 2022-12-31 | 2022-12-31 | Automatic locking device for axial and radial fixing of universal joint transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218913513U true CN218913513U (en) | 2023-04-25 |
Family
ID=86040214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223584341.7U Active CN218913513U (en) | 2022-12-31 | 2022-12-31 | Automatic locking device for axial and radial fixing of universal joint transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218913513U (en) |
-
2022
- 2022-12-31 CN CN202223584341.7U patent/CN218913513U/en active Active
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