CN215762897U - Shear type transmission shaft overload protector - Google Patents
Shear type transmission shaft overload protector Download PDFInfo
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- CN215762897U CN215762897U CN202122308806.5U CN202122308806U CN215762897U CN 215762897 U CN215762897 U CN 215762897U CN 202122308806 U CN202122308806 U CN 202122308806U CN 215762897 U CN215762897 U CN 215762897U
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Abstract
The utility model provides a shearing type transmission shaft overload protector which comprises a shearing fork and a shearing head, wherein a first special-shaped block is arranged at one end of the shearing fork, an inner hole is formed in the first special-shaped block, the inner hole is coaxial with the shearing fork, a first arc groove is formed in the inner hole, a jackscrew hole and an oil filling hole are formed in the first special-shaped block, the first special-shaped block penetrates through the first arc groove, a second special-shaped block is arranged on the shearing head, the first special-shaped block and the second special-shaped block are arranged correspondingly, a round table is arranged at one end of the second special-shaped block, the second special-shaped block and the round table are arranged coaxially, and a second arc groove is formed in the round table. The utility model protects the torque overload of the transmission shaft of the agricultural machine, when the shearing head connected with the power input shaft and the shearing fork are subjected to overlarge torque input, the arranged rotary shearable bolt mechanism automatically shears the bolt to separate the transmission part, stops power transmission and realizes the protection effect on the machine.
Description
Technical Field
The utility model belongs to the field of transmission shafts, and particularly relates to a shear type transmission shaft overload protector.
Background
The power transmission of tractor is given agricultural machinery such as rotary cultivator, lawn mower, bundling machine, blue or green machine of storing up, seeder to the transmission shaft, and current agricultural machinery, power pass through the transmission shaft and transmit output mechanism to make the agricultural machinery operation, this type agricultural machinery, between power and the transmission shaft and between transmission shaft and the output mechanism all be the rigid connection, if the output torque of power is too big, surpasss the scope that the transmission shaft can bear, makes the transmission shaft fracture easily. The existing transmission shaft overload protector is mostly of a friction type, pressure is applied through friction plates to transfer torque, when the torque exceeds a set value, slipping occurs between the friction plates, and the torque is disengaged to realize protection. The overload protection device has the advantages of small adjustable range of the torque force, quick abrasion and poor reliability.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a shear type transmission shaft overload protector.
In order to achieve the purpose, the utility model provides the following technical scheme:
a shear type transmission shaft overload protector comprises a shear fork and a shear head, wherein one end of the shear fork is provided with a first special-shaped block, an inner hole is arranged in the first special-shaped block, the inner hole is coaxial with the shear fork, a first arc groove is arranged in the inner hole, the first special-shaped block is provided with a jackscrew hole and an oil filling hole which are communicated with the first arc groove, the jackscrew hole and the oil filling hole are distributed in the circumferential direction,
the shearing head is provided with a second special-shaped block, the first special-shaped block and the second special-shaped block are correspondingly arranged, one end of the second special-shaped block is provided with a round table, the second special-shaped block and the round table are coaxially arranged, the round table and the inner hole are arranged in a matched manner, a second arc groove is arranged on the round table, the first arc groove and the second arc groove are matched and concentric,
the tail ends of the first special-shaped block and the second special-shaped block are provided with bolt mechanisms which can be sheared off,
the first arc groove and the second arc groove are internally provided with a plurality of balls, the balls are conveyed into cavities of the first arc groove and the second arc groove through the jackscrew hole, the axial positions of the shearing fork and the shearing head are limited, and the balls are lubricated by filling oil and inputting lubricating oil.
Further, the first special-shaped block and the second special-shaped block are provided with bolt holes corresponding to the tail ends of the first special-shaped block and the second special-shaped block, and the bolt holes are determined according to the size of the bolt mechanism.
Further, the jackscrew hole is provided with a bolt plug, and the ball is conveyed into the cavities of the first arc groove and the second arc groove through the jackscrew hole and is locked through the bolt plug.
Furthermore, the first arc groove and the second arc groove are arranged according to the size of the ball, and the ball is made of steel or ceramic.
Furthermore, a spline hole is formed in the center of the shearing head and connected with the transmission shaft.
Furthermore, the fit clearance between the circular truncated cone and the inner hole is +/-0.01 mm.
Has the advantages that: the utility model protects the torque overload of the transmission shaft of the agricultural machine, when the shearing head connected with the power input shaft and the shearing fork are subjected to overlarge torque input, the arranged rotary shearable bolt mechanism automatically shears the bolt to separate the transmission part, the ball slides in the cavity formed by the first arc groove and the second arc groove, the power transmission is stopped, and the protection effect on the machine is realized. The utility model prolongs the service life of the transmission shaft assembly and avoids frequent replacement.
Drawings
Fig. 1 is a structural diagram of an overload protector assembly of a shear type transmission shaft according to the present invention;
FIG. 2 is a schematic view of a shear fork of the overload protector of the shear type transmission shaft according to the present invention;
fig. 3 is a schematic structural view of a shear head of the overload protector for a shear-type transmission shaft according to the present invention;
FIG. 4 is a schematic view of the combination of the cutting head and the cutting fork of the overload protector of the shear type transmission shaft according to the present invention,
in the figure: 1 shearing fork, 101 first dysmorphism piece, 102 hole, 103 first circular arc groove, 104 jackscrew hole, 105 irritate the oilhole, 106 bolt end caps, 2 shearing head, 201 second dysmorphism piece, 202 round platform, 203 second circular arc groove, 204 splined hole, 3 bolt mechanism, 301 bolt hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
As shown in the figures, the shearing type overload protector for the transmission shaft provided by the utility model comprises a shearing fork 1 and a shearing head 2, wherein one end of the shearing fork 1 is provided with a first special-shaped block 101, an inner hole 102 is arranged in the first special-shaped block 101, the inner hole 102 is coaxial with the shearing fork 1, a first arc groove 103 is arranged in the inner hole 102, a jackscrew hole 104 and an oil filling hole 105 are arranged in the first special-shaped block 101 corresponding to the first arc groove 103 in a penetrating manner, the jackscrew hole 104 and the oil filling hole 105 are circumferentially distributed,
the cutting head 2 is provided with a second special-shaped block 201, the first special-shaped block 101 and the second special-shaped block 201 are arranged correspondingly, one end of the second special-shaped block 201 is provided with a circular table 202, the second special-shaped block 201 and the circular table 202 are coaxially arranged, the circular table 202 is matched with the inner hole 102, a second circular arc groove 203 is arranged on the circular table 202, the first circular arc groove 103 and the second circular arc groove 203 are matched and concentric,
the tail ends of the first special-shaped block 101 and the second special-shaped block 201 are provided with bolt mechanisms 3, the bolt mechanisms 3 can be sheared, the size of the bolt mechanisms 3 is set according to the torque force to be achieved by the transmission shaft,
a plurality of balls are arranged in the first arc groove 103 and the second arc groove 203, the balls are conveyed into cavities of the first arc groove 103 and the second arc groove 203 through the jackscrew hole 104, the balls are axially limited, the axial positions of the shearing fork 1 and the shearing head 2 are limited, and lubricating oil is input through the oil filling hole 105 to lubricate the balls.
In practical applications, the first profile block 101 and the second profile block 201 are provided with bolt holes 301 at ends thereof, and the bolt holes 301 are determined according to the size of the bolt mechanism 3.
In practical application, the bolt plug 106 is arranged in the top screw hole 104, and the ball is conveyed into the cavities of the first arc groove 103 and the second arc groove 203 through the top screw hole 104 and locked by the bolt plug 106.
In practical application, the first arc groove 103 and the second arc groove 203 are set according to the size of the ball, and the ball is made of steel or ceramic.
In practical application, the center of the shear head 2 is provided with a splined hole 204, and the splined hole 204 is connected with a transmission shaft.
In practical application, the fit clearance between the circular truncated cone 202 and the inner hole 102 is ± 0.01 mm.
The working principle is as follows:
the shear type transmission shaft overload protector comprises a shear head 2 and a shear fork 1, wherein the shear head 2 and the shear fork 1 are provided with rotary shearable bolt mechanisms 3, the size of each bolt mechanism 3 is set according to the torque force to be achieved by a transmission shaft, when the transmission torque exceeds a specified value, a transmission part is separated by automatically shearing a bolt, and a ball slips in a cavity formed by the first arc groove 103 and the second arc groove 203, so that the transmission of stopping power is stopped, and the machine part is protected. When the shearing head 2 or the shearing fork 1 needs to be replaced, the bolt plug 106 is unscrewed, and the ball is taken out, so that the shearing head 2 and the shearing fork 1 can be separated.
The foregoing shows and describes the principles, essential features and advantages of the present invention, with front, rear, left and right non-limiting reference being made thereto, primarily for the purpose of illustrating the technology more intuitively, and without limitation. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical spirit and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art.
Claims (6)
1. A shear type transmission shaft overload protector is characterized in that: comprises a shearing fork (1) and a shearing head (2), wherein one end of the shearing fork (1) is provided with a first special-shaped block (101), an inner hole (102) is arranged in the first special-shaped block (101), the inner hole (102) is coaxial with the shearing fork (1), a first arc groove (103) is arranged in the inner hole (102), the first special-shaped block (101) is provided with a jackscrew hole (104) and an oil filling hole (105) which are communicated with each other corresponding to the first arc groove (103), the jackscrew hole (104) and the oil filling hole (105) are circumferentially distributed,
the shearing head (2) is provided with a second special-shaped block (201), the first special-shaped block (101) and the second special-shaped block (201) are correspondingly arranged, one end of the second special-shaped block (201) is provided with a circular table (202), the second special-shaped block (201) and the circular table (202) are coaxially arranged, the circular table (202) and the inner hole (102) are arranged in a matched mode, a second circular arc groove (203) is arranged on the circular table (202), the first circular arc groove (103) and the second circular arc groove (203) are arranged in a matched and concentric mode,
the tail ends of the first special-shaped block (101) and the second special-shaped block (201) are provided with bolt mechanisms (3), the bolt mechanisms (3) can be sheared,
a plurality of balls are arranged in the first arc groove (103) and the second arc groove (203), the balls are conveyed into cavities of the first arc groove (103) and the second arc groove (203) through the jackscrew hole (104), the axial positions of the shearing fork (1) and the shearing head (2) are limited, and lubricating oil is input through the oil filling hole (105) to lubricate the balls.
2. A shear drive shaft overload protector according to claim 1, wherein: the first special-shaped block (101) and the second special-shaped block (201) are correspondingly provided with bolt holes (301), and the bolt holes (301) are determined according to the size of the bolt mechanism (3).
3. A shear drive shaft overload protector according to claim 2, wherein: the ball bearing is conveyed into the cavities of the first arc groove (103) and the second arc groove (203) through the top screw hole (104), and is locked through the bolt plug (106).
4. A shear drive shaft overload protector according to claim 2 or claim 3, wherein: the first arc groove (103) and the second arc groove (203) are arranged according to the size of the ball, and the ball is made of steel or ceramic.
5. A shear drive shaft overload protector according to claim 4, wherein: the center of the shearing head (2) is provided with a spline hole (204), and the spline hole (204) is connected with the transmission shaft.
6. A shear drive shaft overload protector according to claim 1, wherein: the fit clearance between the circular truncated cone (202) and the inner hole (102) is +/-0.01 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308806.5U CN215762897U (en) | 2021-09-23 | 2021-09-23 | Shear type transmission shaft overload protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308806.5U CN215762897U (en) | 2021-09-23 | 2021-09-23 | Shear type transmission shaft overload protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215762897U true CN215762897U (en) | 2022-02-08 |
Family
ID=80090277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122308806.5U Active CN215762897U (en) | 2021-09-23 | 2021-09-23 | Shear type transmission shaft overload protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215762897U (en) |
-
2021
- 2021-09-23 CN CN202122308806.5U patent/CN215762897U/en active Active
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