CN217814611U - Connection structure of goat's horn fork and special pipe - Google Patents
Connection structure of goat's horn fork and special pipe Download PDFInfo
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- CN217814611U CN217814611U CN202222050755.5U CN202222050755U CN217814611U CN 217814611 U CN217814611 U CN 217814611U CN 202222050755 U CN202222050755 U CN 202222050755U CN 217814611 U CN217814611 U CN 217814611U
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- 241000883966 Astrophytum capricorne Species 0.000 title claims abstract description 23
- 210000000078 claw Anatomy 0.000 claims abstract description 44
- 239000011324 bead Substances 0.000 claims abstract description 13
- 230000004323 axial length Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 9
- 238000004080 punching Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 7
- 238000003754 machining Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a connection structure of goat's horn fork and special pipe belongs to mechanical technical field. It has solved the high problem of manufacturing cost when current goat's horn fork and special-shaped tube equipment. This connection structure of goat's horn fork and special pipe, including setting up connecting hole and the link of setting on the special pipe on the goat's horn fork, the bead that has outside protrusion and follows axial extension on the pipe wall of special pipe, the strip groove that corresponds the setting with the bead has on the hole wall of connecting hole, the link inserts in the connecting hole and the bead inserts in the strip groove, the connecting hole is the through-hole, the tip opening of link, it is annular constant head tank to have seted up on the hole wall of connecting hole, the outside protrusion of pipe wall of link forms the location arch, protruding embedding of location and axial fixity are in the constant head tank. By adopting the connection structure of the claw fork and the special-shaped pipe, the production cost of the claw fork and the special-shaped pipe during assembly can be reduced.
Description
Technical Field
The utility model belongs to the technical field of machinery, a connection structure of goat's horn fork and special pipe is related to.
Background
In agricultural machinery, a transmission mechanism is arranged between an engine and a workpiece, the transmission mechanism mainly comprises a gear box, a transmission shaft, a torque converter, an output shaft and the like, wherein a claw fork and a special pipe are important components of the transmission shaft.
Chinese patent literature discloses a transmission shaft of a lawn mower, and the application number: CN202121293183.2; the notice number is: CN215634334U ], comprises two claw forks respectively arranged at two ends of a transmission shaft, wherein a triangular tube is arranged in the middle of the transmission shaft, two ends of the triangular tube are respectively inserted into the two claw forks, and the two claw forks and the triangular tube are fixedly connected through elastic pins. When the claw fork and the triangular tube are assembled, the end part of the triangular tube is pressed into a connecting hole of the claw fork through a press, then the pressed triangular tube and the pressed claw fork are fixed on a bench drill and a fixing hole for inserting the elastic pin is drilled out, then the triangular tube and the claw fork are fixed on another press, and the elastic pin is pressed into the fixing hole, so that the triangular tube and the claw fork are assembled. The assembly process needs to be carried out on three machine tools (two presses and one drilling machine) in three steps, so that the production efficiency is reduced, more equipment is occupied, and the production cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem that prior art exists, provide a connection structure of goat's horn fork and special pipe, the technical problem of solution is the manufacturing cost when how to reduce goat's horn fork and special pipe equipment.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a connection structure of goat's horn fork and special pipe, is including setting up connecting hole and the link of setting on the special pipe on the goat's horn fork, outward protrusion and along axially extended bead have on the pipe wall of special pipe, have on the hole wall of connecting hole and correspond the strip groove that sets up with the bead, the link inserts in the connecting hole and the bead inserts in the strip groove, a serial communication port, the connecting hole is the through-hole, the tip opening of link, seted up on the hole wall of connecting hole and be annular constant head tank, the outside protrusion of pipe wall of link forms the location arch, protruding embedding and the axial fixation of location are in the constant head tank.
The positioning bulge is formed on the punching machine in a machining mode, a punch head seat and a punch head shaft which can move along the axial direction are arranged on the punching machine, a punch head penetrates through the punch head seat along the radial direction, a conical punch head cone is arranged at one end of the punch head shaft, the punch head cone is inserted into the punch head seat and abuts against the inner end of the punch head, and when the punch head cone moves towards the punch head seat along the axial direction, the punch head cone can drive the punch head to move outwards along the radial direction. The annular positioning groove can be machined incidentally when the claw fork is turned to machine the connecting hole, and a machine tool and machining steps do not need to be added.
When the goat's horn fork and the special-shaped tube are assembled, the connecting end of the special-shaped tube is pressed into the connecting hole from one end of the goat's horn fork connecting hole by a press, and the convex edge is inserted into the strip groove to circumferentially fix the special-shaped tube and the goat's horn fork; and then mounting the pressed special-shaped tube and the claw fork on a punching machine, aligning the other end of the connecting hole with a punch holder, axially moving the punch holder to extend into the special-shaped tube from the other end of the connecting hole, then axially moving the punch shaft into the punch holder to drive a punch cone to radially move outwards, enabling the punch to act on the tube wall of the special-shaped tube to deform the tube wall and form a positioning bulge protruding outwards, embedding the positioning bulge into a positioning groove to axially fix the special-shaped tube and the claw fork, and taking out the special-shaped tube and the claw fork after the punching machine is reset to finish assembly.
Only two steps and two machine tools are needed during assembly, compared with three steps and three machine tools, one assembling step and one machine tool are reduced, labor cost of one step and equipment cost and energy consumption cost of one machine tool are reduced, workpiece transferring time and workpiece clamping and positioning time between the steps are reduced, production efficiency is improved, elastic pin workpieces are saved, and material cost is saved. Therefore, by adopting the connection structure of the claw fork and the special-shaped pipe, the production cost of the claw fork and the special-shaped pipe during assembly can be reduced.
In the connection structure of the claw fork and the special-shaped pipe, a plurality of convex edges are arranged on the special-shaped pipe, and at least one positioning protrusion is arranged between every two adjacent convex edges. The arrangement can ensure that the stress of the claw fork and the special-shaped pipe is uniform and the structure is stable.
In the above-mentioned connection structure of goat's horn fork and special pipe, there are three beads along circumference evenly distributed on the special pipe, are provided with a location arch between two adjacent beads, and every location arch is the same with the distance between two adjacent beads. The arrangement can further ensure that the stress of the claw fork and the special-shaped pipe is uniform and the structure is stable.
In the connection structure of the claw yoke and the special pipe, the cross section of the positioning groove is arc-shaped, and the outer side surface of the positioning protrusion is a spherical surface. The section of the positioning groove is arc-shaped, so that the positioning protrusion can be conveniently formed by punching, and the outer side surface of the positioning protrusion is a spherical surface, so that the structure of the positioning protrusion is stable.
In the above connection structure of the claw yoke and the special pipe, the radial depth of the positioning groove is 0.05mm-1.00mm greater than the maximum radial depth of the strip groove. The positioning bulge is formed by punching the pipe wall of the special pipe, and the radial depth of the positioning groove is the same as the protruding height of the positioning bulge. The radial depth of the positioning groove is slightly larger than the maximum radial depth of the strip groove, so that on one hand, the positioning bulge can be prevented from deforming too much to reduce the structural strength of the connecting end, and on the other hand, the positioning bulge can be ensured to have enough deformation to ensure that the connecting end keeps axially fixed in the connecting hole.
In the connection structure of the claw fork and the special-shaped pipe, the positioning groove is positioned in the middle of the connection hole, and the axial width of the notch of the positioning groove is 1/5-1/4 of the axial length of the connection hole. The arrangement can further ensure that the stress of the claw fork and the special-shaped pipe is uniform and the structure is stable.
Compared with the prior art, the utility model has the advantages of it is following:
set up the constant head tank in the connecting hole of goat's horn fork, the outside protrusion of pipe wall of special-shaped tube link forms the location arch, and protruding embedding and the axial fixity of location are in the constant head tank, the tip opening of link, and the connecting hole is the through-hole, just can realize the equipment of goat's horn fork and special-shaped tube through two step two machine tools, has reduced manufacturing cost. The convex edge and the positioning bulge are provided with a plurality of parts, so that the claw fork is stably connected with the special-shaped pipe. The positioning groove and the positioning bulge are shaped to facilitate the forming of the positioning bulge and have stable structure.
Drawings
FIG. 1 is a perspective view of a claw yoke and a special-shaped tube in a first embodiment;
FIG. 2 is a sectional view of a positioning groove after the claw yoke is fixedly connected with the special pipe in the first embodiment;
FIG. 3 is a perspective view of a cleat fork according to one embodiment;
FIG. 4 is a perspective view showing a positioning protrusion formed at the connection end of the first special pipe according to the first embodiment;
FIG. 5 is a schematic view of a process of forming the positioning protrusion by the punch according to the first embodiment.
In the figure, 1, a claw fork; 1a, connecting holes; 1b, a strip groove; 1c, positioning grooves; 2. a special-shaped pipe; 2a, a connecting end; 2b, ribs; 2c, a process tank; 2d, positioning a bulge; 3. a punch holder; 3a, positioning convex strips; 4. a punch; 5. a spring; 6. and (4) a punch cone.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1 to 4, a connection structure of a claw yoke and a special pipe includes a connection hole 1a provided on the claw yoke 1 and a connection end 2a provided on the special pipe 2, the connection hole 1a is a through hole, an end of the connection end 2a is opened, and the connection end 2a is inserted into the connection hole 1 a. The pipe wall of the special pipe 2 is provided with a plurality of convex ribs 2b which protrude outwards and extend along the axial direction, the special pipe 2 is provided with a plurality of convex ribs 2b, and all the convex ribs 2b are uniformly distributed on the special pipe 2 along the circumferential direction. In this embodiment, there are three ribs 2b, and the cross-sectional shape of one rib 2b is different from the cross-sectional shapes of the other two ribs 2 b. The special pipe 2 is formed by extrusion of a circular pipe, the inner side surface of the special pipe 2 is provided with three process grooves 2c corresponding to the positions of the convex ribs 2b, the cross section of one process groove 2c is trapezoidal, and the cross sections of the other process grooves 2c are arc-shaped.
The hole wall surface of the connection hole 1a has a groove 1b provided corresponding to the rib 2b, and the rib 2b is inserted into the corresponding groove 1 b. Still seted up on the hole wall of connecting hole 1a and be annular constant head tank 1c, the outside protrusion of pipe wall of link 2a forms location arch 2d, and location arch 2d imbeds and axial fixity in constant head tank 1c, and location arch 2 d's lateral surface supports and leans on to form axial fixity on constant head tank 1 c's both sides wall. At least one positioning protrusion 2d is disposed between two adjacent ribs 2b, in this embodiment, one positioning protrusion 2d is disposed between two adjacent ribs 2b, and a distance between each positioning protrusion 2d and two adjacent ribs 2b is the same. The section of the positioning groove 1c is arc-shaped, and the outer side surface of the positioning bulge 2d is a spherical surface. The radial depth of the positioning groove 1c is 0.05mm-1.00mm greater than the maximum radial depth of the strip groove 1b, and can be generally selected from 0.1mm, 0.2mm, 0.3mm, 0.4mm or 0.5 mm. The positioning groove 1c is positioned in the middle of the connecting hole 1a, and the axial width of the notch of the positioning groove 1c is 1/6-1/4, generally 1/5, of the axial length of the connecting hole 1 a.
As shown in fig. 5, the positioning projection 2d is formed on a punch press. Be provided with the base on the punching machine, the upper surface of base is the reference surface, has seted up the perforation that runs through from top to bottom in the base, has seted up the location bar groove with bead 2b one-to-one on the fenestrate hole wall. The punching machine is also provided with a punch seat 3 and a punch shaft which can respectively move up and down along the axial direction, and the punch seat 3 is arranged corresponding to the base. The outer side surface of the punch holder 3 is provided with a positioning convex strip 3a, the positioning convex strip 3a corresponds to a process groove 2c with a trapezoidal cross section, the cross section of the positioning convex strip 3a is also trapezoidal, and the circumferential positioning of the punch holder 3 and a workpiece is realized through the matching of the positioning convex strip 3a and the corresponding process groove 2 c. Punch heads 4 capable of moving in the radial direction penetrate through the punch head seat 3 in the radial direction, the number of the punch heads 4 is three, the punch heads 4 are arranged corresponding to the three positioning protrusions 2d one by one, and every two adjacent punch heads 4 are separated by 120 degrees. In order to facilitate the resetting of the punch 4, a spring 5 is arranged between the inner end of the punch 4 and the punch holder 3, and the spring 5 can drive the punch 4 to move inwards in the radial direction. One end of the punch shaft is provided with a punch cone 6, the punch cone 6 is inserted into the punch base 3, the punch cone 6 is of a triangular pyramid structure, and three conical surfaces of the punch cone 6 are respectively abutted against the inner ends of the three punches 4. When the punch cone 6 moves axially towards the punch holder 3 under the drive of the punch shaft, the punch cone 6 can drive the punch 4 to move radially outwards. The annular positioning groove 1c can be machined incidentally when the claw fork 1 is turned into the connecting hole 1a, and a machine tool and machining steps do not need to be added.
When the claw fork 1 and the special-shaped tube 2 are assembled, the connecting end 2a of the special-shaped tube 2 is pressed into the connecting hole 1a from one end of the connecting hole 1a of the claw fork 1 by a press, and the convex rib 2b is inserted into the corresponding strip groove 1b to circumferentially fix the special-shaped tube 2 and the claw fork 1. Then the pressed special-shaped tube 2 and the goat's horn fork 1 are installed and fixed on a punching machine, the special-shaped tube 2 is inserted into a through hole of the base, the end face of one end of the goat's horn fork 1 is attached to the reference face of the base, so that the pressed special-shaped tube 2 and the goat's horn fork 1 are axially positioned on the base, and meanwhile, the convex ribs 2b are embedded into the positioning strip grooves, so that the pressed special-shaped tube 2 and the goat's horn fork 1 are circumferentially positioned on the base. Then, as shown in fig. 5, the other end of the connection hole 1a is aligned with the punch holder 3, and the punch holder 3 moves downward to extend into the special pipe 2 from the other end of the connection hole 1 a; the positioning convex strip 3a on the punch holder 3 is embedded into the process groove 2c of the special-shaped pipe 2, so that the punch holder 3 and the special-shaped pipe 2 are circumferentially positioned, and the punch holder 3 moves downwards to a position where the punch 4 is aligned with the positioning groove 1 c; then the punch moves downwards axially, so that the punch cone 6 drives the punch 4 to move outwards in the radial direction, the punch 4 acts on the pipe wall of the special-shaped pipe 2 to deform the pipe wall and form a positioning bulge 2d protruding outwards, and the positioning bulge 2d is embedded into the positioning groove 1c to axially fix the special-shaped pipe 2 and the claw yoke 1; then the punch moves axially, the spring 5 drives the punch 4 to move radially inwards, and the outer end of the punch 4 retracts into the punch seat 3; and finally, the punch holder 3 and the punch cone 6 move out of the claw fork 1 upwards, and the punch resets and then takes out the special-shaped tube 2 and the claw fork 1 to finish assembly.
Only two steps and two machine tools are needed during assembly, compared with three steps and three machine tools, one assembly step and one machine tool are reduced, labor cost of one step and equipment cost and energy consumption cost of one machine tool are reduced, workpiece transfer time and workpiece clamping and positioning time between the steps are reduced, production efficiency is improved, elastic pin workpieces are saved, and material cost is saved. Therefore, by adopting the connection structure of the claw fork 1 and the special-shaped tube 2, the production cost of the claw fork 1 and the special-shaped tube 2 during assembly can be reduced.
Example two
All the ribs 2b have the same cross-sectional shape, which is circular arc shape, and the other structure is the same as the first embodiment.
EXAMPLE III
The number of the positioning protrusions 2d is different from that of the first embodiment, two positioning protrusions 2d are arranged between two adjacent convex ribs 2b, and other structures are the same as those of the first embodiment.
Example four
The number of the ribs 2b and the number of the positioning protrusions 2d are different from the first embodiment, two ribs 2b are provided, and two positioning protrusions 2d are provided; or four ribs 2b and four positioning projections 2 d. The other structure is the same as the first embodiment.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The utility model provides a connection structure of goat's horn fork and special pipe, is including setting up connecting hole (1 a) on goat's horn fork (1) and setting up link (2 a) on special pipe (2), have outward protrusion and along axially extended bead (2 b) on the pipe wall of special pipe (2), have on the hole wall face of connecting hole (1 a) and correspond strip groove (1 b) that sets up with bead (2 b), link (2 a) are inserted in connecting hole (1 a) and bead (2 b) are inserted in strip groove (1 b), its characterized in that, connecting hole (1 a) is the through-hole, the tip opening of link (2 a), seted up on the hole wall face of connecting hole (1 a) and be annular constant head tank (1 c), the outside protrusion of pipe wall of link (2 a) forms location arch (2 d), location arch (2 d) embedding and axial fixity are in constant head tank (1 c).
2. The connection structure of a claw fork and a special pipe according to claim 1, characterized in that the special pipe (2) is provided with a plurality of convex ribs (2 b), and at least one positioning protrusion (2 d) is arranged between two adjacent convex ribs (2 b).
3. The structure for connecting a claw fork and a special pipe according to claim 1, wherein three ribs (2 b) are uniformly distributed on the special pipe (2) along the circumferential direction, one positioning protrusion (2 d) is arranged between two adjacent ribs (2 b), and the distance between each positioning protrusion (2 d) and two adjacent ribs (2 b) is the same.
4. The structure for connecting a claw yoke and a shaped pipe according to any one of claims 1 to 3, wherein the cross section of the positioning groove (1 c) is circular arc-shaped, and the outer side surface of the positioning protrusion (2 d) is spherical.
5. A claw yoke and profile tube connection according to any of claims 1-3, characterised in that the radial depth of the positioning groove (1 c) is 0.05-1.00 mm greater than the maximum radial depth of the groove (1 b).
6. The structure for connecting a claw yoke to a shaped pipe according to any one of claims 1 to 3, wherein the positioning groove (1 c) is located at a middle position of the connecting hole (1 a), and an axial width of a notch of the positioning groove (1 c) is 1/5 to 1/4 of an axial length of the connecting hole (1 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222050755.5U CN217814611U (en) | 2022-08-01 | 2022-08-01 | Connection structure of goat's horn fork and special pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222050755.5U CN217814611U (en) | 2022-08-01 | 2022-08-01 | Connection structure of goat's horn fork and special pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217814611U true CN217814611U (en) | 2022-11-15 |
Family
ID=83972175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222050755.5U Active CN217814611U (en) | 2022-08-01 | 2022-08-01 | Connection structure of goat's horn fork and special pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217814611U (en) |
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2022
- 2022-08-01 CN CN202222050755.5U patent/CN217814611U/en active Active
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240102 Address after: 313000 qingcaowu industrial corridor, Lijiaxiang Town, Changxing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang Yilin Machinery Co.,Ltd. Address before: 317600 Xingye No.2, Yucheng street, Yuhuan City, Taizhou City, Zhejiang Province Patentee before: Zhejiang Changheng Machinery Group Co.,Ltd. |