A triple gear bushing embedded press-fit device

Abstract

The present invention discloses a triple gear bushing embedded press-fitting device, comprising a connecting seat, a cover plate, a fixing bolt and a guide sleeve, wherein the top of the connecting seat is provided with a threaded hole 1 for installing the fixing bolt, the middle of the bottom of the connecting seat is provided with a mounting groove, a pressure head is provided in the mounting groove, a threaded hole 2 is provided on the top of the pressure head, a guide sleeve is provided below the connecting seat, the guide sleeve is detachably connected to the connecting seat, a through hole is provided in the middle of the guide sleeve, two or more guide holes communicating with the through hole are provided on the outer wall of the guide sleeve, forming pins are provided in the guide holes, the bottom of the forming pins is provided with an arc sliding groove, the bottom of the guide sleeve is provided with a spring groove communicating with the guide hole, a spring is provided in the spring groove, a steel ball is provided on the top of the spring, and a cover plate is provided at the bottom of the guide sleeve. The triple gear bushing embedded press-fitting device of the present invention has a novel structure, a small size, is easy to load and unload and disassemble for use, and has high practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of press-fitting devices, and in particular relates to an embedded press-fitting device for a triple gear stepped inner bore bushing. Background Art

[0002] When the gear mechanism of the triple gear is meshed and transmitted, its structure is compact, which minimizes the size of the bridge housing and reduces the weight of the vehicle body. The use of large helical angle external teeth can increase the meshing length and meshing efficiency of the gears, meshing smoothly, and improve the bearing capacity of the tooth surface, but there is a large axial relative sliding speed along the tooth width direction, which will generate a large axial force. Compared with parallel axis spur gears, helical gears have much higher service life and bearing capacity.

[0003] The purpose of press-fitting an embedded bushing on a triple gear is to limit the axial displacement of the product when the triple gear with the bushing is running, thereby improving the wear resistance of the bushing of the triple gear, improving the lubrication effect of the journal, and enhancing the shockproof function. However, the press-fitting device for press-fitting bushings on triple gears in the prior art has a complicated and cumbersome assembly and use process, a complex structure, poor practicality, a large size, and poor press-fitting effect. Therefore, there is an urgent need to develop a press-fitting device for press-fitting embedded bushings on triple gears. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a press-fitting device for press-fitting an embedded bushing on a triple gear.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A triple gear bushing embedded press-fitting device is provided, comprising a connecting seat, a cover plate, a fixing bolt and a guide sleeve, wherein the top of the connecting seat is provided with a threaded hole 1 for installing the fixing bolt, the middle of the bottom of the connecting seat is provided with a mounting groove, a pressure head is provided in the mounting groove, the upper part of the pressure head is arranged in the mounting groove, the top of the pressure head is provided with a threaded hole 2, the fixing bolt is installed in the threaded hole 1 and the threaded hole 2, a guide sleeve is provided below the connecting seat, the guide sleeve is detachably connected to the connecting seat, a through hole is provided in the middle of the guide sleeve, and a pressure head is provided at the bottom Placed in the through hole, the outer wall of the guide sleeve is provided with two or more guide holes communicated with the through hole, the guide holes are each provided with a forming pin, the bottom of the forming pin is provided with an arc sliding groove, the bottom of the guide sleeve is provided with a spring groove communicated with the guide hole, a spring is provided in the spring groove, the top of the spring is provided with a steel ball, the upper part of the steel ball is arranged in the arc sliding groove, one end of the forming pin close to the through hole abuts against the lower end of the pressure head, and one end of the forming pin close to the through hole is matched with the lower end surface of the pressure head, and a cover plate is provided at the bottom of the guide sleeve.

[0007] Furthermore, a pin hole one is provided on one side of the threaded hole one, a pin hole two is provided on one side of the threaded hole two, the lower part of the locating pin is arranged in the pin hole two, the upper part of the locating pin is arranged in the pin hole one, the connecting seat is connected to the installation groove through the fixing bolt, the locating pin and the upper part of the pressure head, and a locating pin is provided on one side of the fixing bolt.

[0008] Furthermore, at least three groups of positioning pins are arranged on the top of the connection seat. The positioning pins are arranged around the fixing bolt in a circular array with the fixing bolt as the center. The positioning pins are connected to the top of the pressure head through pin holes.

[0009] Furthermore, the bottom of the connecting seat is provided with a plurality of positioning grooves, and the plurality of positioning grooves are arranged in a circular array around the mounting groove with the mounting groove as the center. The top of the guide sleeve is provided with a plurality of positioning blocks, and the plurality of positioning blocks are adapted to the plurality of positioning grooves at the bottom of the connecting seat. The positioning blocks are arranged in the positioning grooves one by one so that the bottom of the connecting seat and the top of the guide sleeve are bonded into a whole.

[0010] Furthermore, a plurality of positioning blocks are provided at the bottom of the connecting seat, and the plurality of positioning blocks are arranged in a circular array around the mounting groove with the mounting groove as the center. A plurality of positioning grooves are provided at the top of the guide sleeve, and the plurality of positioning grooves are adapted to the plurality of positioning blocks at the bottom of the connecting seat. The positioning blocks are arranged in the positioning grooves one by one so that the bottom of the connecting seat and the top of the guide sleeve are bonded into a whole.

[0011] Furthermore, the pressure head is a conical pressure head, and the top of the conical pressure head is in the shape of a cone, a truncated cone, or a prism.

[0012] Furthermore, one end of the forming pin away from the through hole is a wedge-shaped surface forming an extrusion end, and the cross-sectional view of the circular arc sliding groove includes a connecting tangent segment one, an arc segment and a connecting tangent segment two, and the connecting tangent segment one and the connecting tangent segment two are respectively tangent to the two ends of the arc segment, and the extension lines of the connecting tangent segment one and the connecting tangent segment two intersect, and the angle of intersection between the extension lines of the connecting tangent segment one and the connecting tangent segment two is a, and the range of the angle a is 90°≤a≤110°, and the arc segment on the cross-sectional view of the circular arc sliding groove cooperates with the top of the steel ball, and the setting of the circular arc sliding groove enables the forming pin to move left and right during installation, but the forming pin does not move completely in the guide hole.

[0013] Furthermore, an annular groove is provided in the middle of the outer wall of the connecting seat, and the provision of the annular groove is conducive to the installation and disassembly of the connecting seat and the guide sleeve.

[0014] Furthermore, the lower end of the spring of the cover plate is abutted, and the cover plate is connected to the bottom of the guide sleeve by fixing bolts.

[0015] Furthermore, the lower portion of the guide sleeve is provided with an annular limiting step 1 to form an annular step surface 1, the guide hole is arranged below the step surface 1, the upper portion of the cover plate is provided with an annular limiting step 2 to form an annular step surface 2, the limiting step 2 is adapted to the through hole on the guide sleeve, the bottom of the guide sleeve is fitted with the step surface 2, and the upper portion of the cover plate is arranged in the through hole.

[0016] Furthermore, an adjusting washer is provided on the top of the pressure head, and a hole is provided on the adjusting washer for facilitating the installation of a fixing bolt and a positioning pin;

[0017] Furthermore, the fixing bolts are hexagon socket bolts;

[0018] Furthermore, the positioning pin is a cylindrical pin.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The triple gear bushing embedded press-fitting device of the present invention has novel structure, small volume, easy assembly and disassembly, high practicality and good bushing press-fitting effect.

[0021] When using the triple gear bushing embedded press-fitting device described in the present invention, first disassemble the connecting seat from the guide sleeve and the cover plate, install the forming pin into the guide hole on the guide sleeve, then install the steel ball and the spring in sequence, and install the cover plate, which are connected by hexagon socket bolts. The guide sleeve and the cover plate form a press-fitting whole, the lower part of the press-fitting whole is installed in the inner hole of the bushing, so that the end face of the bushing is close to the end face of the guide sleeve, and then the press-fitting whole with the bushing is installed in the inner hole of the gear, and the connecting seat is connected to the upper part of the press-fitting whole through the positioning groove and the positioning block. When pressure is applied to the upper plane of the connecting seat, the upper part of the steel ball slides in the circular arc sliding groove under the mutual cooperation of the spring, the steel ball and the circular arc sliding groove, so that the forming pin slides in and out of the guide hole.

[0022] When press-fitting the bushing, the connecting seat and the press-fitting body are installed as a whole, and the lower end of the conical pressure head abuts against the end of the forming pin close to the through hole. With the cooperation of the spring, steel ball and circular arc sliding groove, the forming pin extends out of the guide hole along one end of the through hole through the guide sleeve. Under the action of the forming pin, the bushing is pressed into the inner hole of the gear and further embedded in the groove.

[0023] After the bushing is pressed, the connecting seat is separated from the press-fitted assembly. The end of the forming pin close to the through hole, under the cooperation of the spring, steel ball and circular arc sliding groove, compresses the steel ball to move upward. The circular arc sliding groove at the bottom of the forming pin is extended into the through hole under the force of the steel ball. At this time, the press-fitted assembly can be taken out from the inner ring of the gear, thereby completing the press-fitting of the gear bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the embedded press-fitting device for triple gear bushings of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the circular arc sliding groove on the forming pin of the present invention.

[0026] Figure 3 It is a schematic structural diagram of the forming pin described in the present invention.

[0027] In the attached figure:

[0028] 1. Connecting seat, 2. Fixing bolt, 3. Limiting step 2, 4. Locating pin, 5. Pressure head, 6. Forming pin, 7. Steel ball, 8. Guide sleeve, 9. Spring, 10. Cover plate, 11. Step surface 2, 12. Adjusting washer, 13. Mounting groove, 14. Threaded hole 1, 15. Threaded hole 2, 16. Through hole, 17. Guide hole, 18. Arc sliding groove, 19. Spring groove, 20. Pin hole 1, 21. Pin hole 2, 22. Locating groove, 23. Locating block, 24. Extrusion end, 25. Annular groove, 26. Limiting step 1, 27. Step surface 1, 28. Connecting tangent segment 1, 29. Arc segment, 30. Connecting tangent segment 2. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the implementation of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0030] Example 1

[0031] like Figures 1 to 3As shown, the present invention provides a triple gear bushing embedded press-fitting device, including a connecting seat 1, a cover plate 10, a fixing bolt 2 and a guide sleeve 8, the top of the connecting seat 1 is provided with a threaded hole 14 for installing the fixing bolt 2, the middle of the bottom of the connecting seat 1 is provided with a mounting groove 13, a pressure head 5 is provided in the mounting groove 13, the upper part of the pressure head 5 is arranged in the mounting groove 13, the top of the pressure head 5 is provided with a threaded hole 2 15, the fixing bolt 2 is installed in the threaded hole 14 and the threaded hole 2 15, a guide sleeve 8 is provided below the connecting seat 1, the guide sleeve 8 is detachably connected to the connecting seat 1, a through hole 16 is provided in the middle of the guide sleeve 8, the lower part of the pressure head 5 The guide sleeve 8 is arranged in the through hole 16, and two or more guide holes 17 communicating with the through hole 16 are arranged on the outer wall of the guide sleeve 8. A forming pin 6 is arranged in each of the guide holes 17. The bottom of the forming pin 6 is provided with an arc sliding groove 18. The bottom of the guide sleeve 8 is provided with a spring groove 19 communicating with the guide hole 17. A spring 9 is arranged in the spring groove 19. A steel ball 7 is arranged on the top of the spring 9. The upper part of the steel ball 7 is arranged in the arc sliding groove 18. One end of the forming pin 6 close to the through hole 16 abuts against the lower end of the pressure head 5, and one end of the forming pin 6 close to the through hole 16 is matched with the lower end surface of the pressure head 5. A cover plate 10 is provided at the bottom of the guide sleeve 8.

[0032] As a further improvement of the above embodiment, a pin hole 20 is provided on one side of the threaded hole 14, a pin hole 21 is provided on one side of the threaded hole 15, the lower part of the locating pin 4 is arranged in the pin hole 21, the upper part of the locating pin 4 is arranged in the pin hole 20, the connecting seat 1 is connected to the mounting groove 13 through the fixing bolt 2, the locating pin 4 and the upper part of the pressure head 5, and a locating pin 4 is provided on one side of the fixing bolt 2.

[0033] As a further improvement of the above embodiment, at least three groups of positioning pins 4 are arranged on the top of the connecting seat 1. The positioning pins 4 are arranged around the fixing bolt 2 in a circular array with the fixing bolt 2 as the center. The positioning pins 4 are connected to the top of the pressure head 5 through pin holes.

[0034] As a further improvement of the above-mentioned embodiment, a plurality of positioning grooves 22 are provided at the bottom of the connecting seat 1, and the plurality of positioning grooves 22 are arranged in a circular array around the mounting groove 13 with the mounting groove 13 as the center. A plurality of positioning blocks 23 are provided at the top of the guide sleeve 8, and the plurality of positioning blocks 23 are adapted to the plurality of positioning grooves 22 at the bottom of the connecting seat 1. The positioning blocks 23 are arranged in the positioning grooves 22 one by one so that the bottom of the connecting seat 1 and the top of the guide sleeve 8 are bonded into a whole.

[0035] As a further improvement of the above embodiment, the pressure head 5 is a conical pressure head 5 , and the top of the conical pressure head 5 is in a cone shape, a truncated cone shape, or a prism shape.

[0036] As a further improvement of the above-mentioned embodiment, the end of the forming pin 6 away from the through hole 16 is wedge-shaped to form an extrusion end 24, and the cross-sectional view of the arc sliding groove 18 includes a connecting tangent segment 1 28, an arc segment 29 and a connecting tangent segment 2 30. The connecting tangent segment 1 28 and the connecting tangent segment 2 30 are tangent to the two ends of the arc segment 29 respectively, and the extension lines of the connecting tangent segment 1 28 and the connecting tangent segment 2 30 intersect. The angle of intersection between the extension lines of the connecting tangent segment 1 28 and the connecting tangent segment 2 30 is a, and the angle a is 100°. The arc segment 29 on the cross-sectional view of the arc sliding groove 18 cooperates with the top of the steel ball 7. The setting of the arc sliding groove 18 enables the forming pin 6 to move left and right during installation, but the forming pin 6 does not completely move in the guide hole 17.

[0037] As a further improvement of the above embodiment, an annular groove 25 is provided in the middle of the outer wall of the connecting seat 1 . The provision of the annular groove 25 is conducive to the installation and disassembly of the connecting seat 1 and the guide sleeve 8 .

[0038] As a further improvement of the above embodiment, the lower end of the spring 9 of the cover plate 10 abuts against the cover plate 10 , and the cover plate 10 is connected to the bottom of the guide sleeve 8 via the fixing bolts 2 .

[0039] As a further improvement of the above embodiment, the lower portion of the guide sleeve 8 is provided with an annular limiting step 26 to form an annular step surface 27, the guide hole 17 is arranged below the step surface 27, the upper portion of the cover plate 10 is provided with an annular limiting step 3 to form an annular step surface 11, the limiting step 23 is adapted to the through hole 16 on the guide sleeve 8, the bottom of the guide sleeve 8 is fitted with the step surface 11, and the upper portion of the cover plate 10 is arranged in the through hole 16.

[0040] As a further improvement of the above embodiment, an adjusting washer 12 is provided on the top of the pressure head 5, and a hole is provided on the adjusting washer 12 for facilitating the installation of the fixing bolt 2 and the positioning pin 4;

[0041] As a further improvement of the above embodiment, the fixing bolt 2 is a hexagon socket bolt;

[0042] As a further improvement of the above embodiment, the positioning pin 4 is a cylindrical pin.

[0043] Example 2

[0044] As a further improvement of the above-mentioned embodiment, a plurality of positioning blocks 23 are provided at the bottom of the connecting seat 1, and the plurality of positioning blocks 23 are arranged in a circular array around the mounting groove 13 with the mounting groove 13 as the center. A plurality of positioning grooves 22 are provided at the top of the guide sleeve 8, and the plurality of positioning grooves 22 are adapted to the plurality of positioning blocks 23 at the bottom of the connecting seat 1. The positioning blocks 23 are arranged in the positioning grooves 22 one by one so that the bottom of the connecting seat 1 and the top of the guide sleeve 8 are bonded into a whole.

[0045] When using the triple gear bushing embedded press-fitting device described in the present invention, first disassemble the connecting seat 1 from the guide sleeve 8 and the cover plate 10, install the forming pin 6 into the guide hole 17 on the guide sleeve 8, and then install the steel ball 7 and the spring 9 in turn, and install the cover plate 10, and connect them by hexagon socket bolts. The guide sleeve 8 and the cover plate 10 form a press-fitting whole, and the lower part of the press-fitting whole is installed in the inner hole of the bushing so that the end face of the bushing is close to the end face of the guide sleeve 8, and then the press-fitting whole with the bushing is installed in the inner hole of the gear, and the connecting seat 1 is connected to the upper part of the press-fitting whole through the positioning groove 22 and the positioning block 23. When pressure is applied to the upper plane of the connecting seat 1, under the mutual cooperation of the spring 9, the steel ball 7 and the circular arc sliding groove 18, the upper part of the steel ball slides in the circular arc sliding groove 18, thereby making the forming pin 6 slide in and out of the guide hole 17.

[0046] When press-fitting the bushing, the connecting seat 1 and the press-fitting unit are installed as a whole, and the lower end of the conical pressure head 5 abuts against the end of the forming pin 6 close to the through hole 16. Under the cooperation of the spring 9, the steel ball 7 and the arc sliding groove 18, the forming pin 6 extends out of the guide sleeve 8 from the guide hole 17 along one end of the through hole 16. Under the action of the forming pin 6, the bushing is pressed into the inner hole of the gear and further embedded in the groove.

[0047] After the bushing is press-fitted, when the connecting seat 1 is separated from the press-fitted body, the end of the forming pin 6 close to the through hole 16 is under the cooperation of the spring 9, the steel ball 7 and the circular arc sliding groove 18, and the steel ball 7 moves upward under the force of the compression spring 9. The circular arc sliding groove 18 at the bottom of the forming pin 6 is under the action of the steel ball 7, and the end of the forming pin 6 close to the through hole 16 extends into the through hole 16. At this time, the press-fitted body can be taken out from the inner ring of the gear, thereby completing the press-fitting of the gear bushing.

[0048] Obviously, the above embodiments are merely examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A triple gear bushing embedded press-fitting device, comprising a connecting seat, a cover plate, a fixing bolt and a guide sleeve, wherein a threaded hole for installing the fixing bolt is provided on the top of the connecting seat, characterized in that: A mounting groove is provided in the middle of the bottom of the connecting seat, a pressure head is provided in the mounting groove, the upper part of the pressure head is arranged in the mounting groove, a threaded hole two is provided at the top of the pressure head, the fixing bolt is installed in the threaded hole one and the threaded hole two, a guide sleeve is provided below the connecting seat, the guide sleeve is detachably connected to the connecting seat, a through hole is provided in the middle of the guide sleeve, the lower part of the pressure head is arranged in the through hole, two or more guide holes communicating with the through hole are provided on the outer wall of the guide sleeve, forming pins are provided in the guide holes, the bottom of the forming pins is provided with an arc sliding groove, the bottom of the guide sleeve is provided with a spring groove communicating with the guide hole, a spring is provided in the spring groove, a steel ball is provided on the top of the spring, the upper part of the steel ball is arranged in the arc sliding groove, one end of the forming pin close to the through hole abuts against the lower end of the pressure head, and a cover plate is provided at the bottom of the guide sleeve; At least three groups of positioning pins are arranged on the top of the connection seat. The positioning pins are arranged around the fixing bolt in a circular array with the fixing bolt as the center. The positioning pins are connected to the top of the pressure head through pin holes. The bottom of the connecting seat is provided with a plurality of positioning grooves, and the plurality of positioning grooves are arranged in a circular array around the mounting groove with the mounting groove as the center. The top of the guide sleeve is provided with a plurality of positioning blocks, and the plurality of positioning blocks are adapted to the plurality of positioning grooves at the bottom of the connecting seat. The positioning blocks are arranged in the positioning grooves one by one so that the bottom of the connecting seat and the top of the guide sleeve are bonded into a whole.

2. The triple gear bushing embedded press-fitting device according to claim 1 is characterized in that: The pressure head is a conical pressure head, and the top of the conical pressure head is in a cone shape, a truncated cone shape, or a prism shape.

3. The triple gear bushing embedded press-fitting device according to claim 1 is characterized in that: One end of the forming pin away from the through hole is in the form of a wedge-shaped surface to form an extrusion end.

4. The triple gear bushing embedded press-fitting device according to claim 1 is characterized in that: An annular groove is provided in the middle of the outer wall of the connecting seat.

5. The triple gear bushing embedded press-fitting device according to claim 1 is characterized in that: The lower end of the spring of the cover plate is abutted, and the cover plate is connected to the bottom of the guide sleeve through fixing bolts.

6. The triple gear bushing embedded press-fitting device according to claim 1 is characterized in that: The lower part of the guide sleeve is provided with an annular limiting step 1 to form an annular step surface 1, the guide hole is arranged below the step surface 1, the upper part of the cover plate is provided with an annular limiting step 2 to form an annular step surface 2, the limiting step 2 is adapted to the through hole on the guide sleeve, the bottom of the guide sleeve is fitted with the step surface 2, and the upper part of the cover plate is arranged in the through hole.

7. The triple gear bushing embedded press-fitting device according to any one of claims 1 to 6, characterized in that: An adjusting washer is arranged on the top of the pressure head, and a hole for facilitating the installation of a fixing bolt and a positioning pin is arranged on the adjusting washer.

Images