CN212177706U

CN212177706U - Balanced type torsion overload protector

Info

Publication number: CN212177706U
Application number: CN202020754321.1U
Authority: CN
Inventors: 赵国柱
Original assignee: S&j Driveshaft Hangzhou Co ltd
Current assignee: S&j Driveshaft Hangzhou Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-12-18
Anticipated expiration: 2030-05-09

Abstract

The utility model relates to a balanced type torsion overload protection ware, affiliated agricultural machine transmission system technical field, including the transmission shaft, transmission shaft one end be equipped with the power input integral key shaft, the transmission shaft other end be equipped with the load integral key shaft, load integral key shaft and transmission shaft between, power input integral key shaft and transmission shaft between all be equipped with the outer tube fork, outer tube fork and power input integral key shaft between be equipped with the torsion subassembly, outer tube fork and load integral key shaft between be equipped with terminal spline fork. The torsion assembly comprises a flange fork movably hinged and fixed with the outer pipe fork, and a spline joint in spline type nested connection with the power input spline shaft is arranged between the flange fork and the power input spline shaft. The device has the characteristics of good operation stability, high structural strength and long service life. The problem of shaking caused by asymmetric centrifugal force is solved. Improve overload protection effect, avoid having the potential safety hazard that bolt fracture arouses to appear in the operation process.

Description

Balanced type torsion overload protector

Technical Field

The utility model relates to an agricultural machine transmission system technical field, concretely relates to balanced type torsion overload protection ware.

Background

The existing shear type torque device (namely a shear bolt torque limiter) is installed on an agricultural transmission shaft and has the function of overload protection, when the torque transmitted by the transmission shaft reaches the shear force value of a bolt on a clutch, the bolt can be cut off, the transmission shaft loses the function of transmitting the torque, and both forward rotation and reverse rotation can be realized. However, the existing limiter has the defect of asymmetric centrifugal force during rotation due to the fact that the bolt mounting block is designed on one side, the transmission shaft is in an unbalanced state during rotation, shaking can occur, and the service life of the universal joint is inevitably influenced by long-term use.

Disclosure of Invention

The utility model discloses there is the not enough of operational stability difference, structural strength low and life weak point among the main prior art of solving, provides a balanced type torsion overload protection ware, and it has the characteristics that operational stability is good, structural strength is high and long service life. The problem of shaking caused by asymmetric centrifugal force is solved. Improve overload protection effect, avoid having the potential safety hazard that bolt fracture arouses to appear in the operation process.

The above technical problem of the present invention can be solved by the following technical solutions:

the balanced type torsion overload protector comprises a transmission shaft, wherein a power input spline shaft is arranged at one end of the transmission shaft, a load spline shaft is arranged at the other end of the transmission shaft, outer pipe forks are arranged between the load spline shaft and the transmission shaft and between the power input spline shaft and the transmission shaft, a torsion assembly is arranged between the outer pipe forks and the power input spline shaft, and a tail end spline fork is arranged between the outer pipe forks and the load spline shaft. The torsion assembly comprises a flange fork movably hinged and fixed with the outer pipe fork, and a spline joint in spline type nested connection with the power input spline shaft is arranged between the flange fork and the power input spline shaft.

Preferably, the flange fork is provided with a pair of bolts which are in penetrating type sleeve joint with the spline joint, and nuts which are in threaded type sleeve joint with the bolts are arranged on two sides of the end face of the spline joint.

When the limited load force carried by the load end of the transmission shaft is within the limit, the output of the power torque can be ensured; when the load force of the load end exceeds the shear force value of the bolt, the bolt can be cut off, the power torque is instantly disconnected, and the overload protection takes effect.

Preferably, the flange fork comprises a spline flange, a pair of fork plates which are symmetrically distributed and integrated with the spline flange is arranged on the spline flange, and a reinforcing block is arranged between the end face of the outer side of each fork plate and the upper end face of the spline flange.

Preferably, the reinforcing block is provided with a grease nipple which is in threaded nesting with the reinforcing block, a plurality of steel balls are arranged between the grease nipple and the reinforcing block, and the steel balls are positioned in the reinforcing block and are in limited embedded contact with the spline joint. The steel ball that adds plays the effect of locking, can avoid because of the bolt is cut off, the damage accident that hookup fork and sleeve pipe separation drop caused. The overload protection one-way clutch can be continuously and circularly used normally by replacing the bolt damaged by cutting off.

Preferably, cross shafts are arranged between the tail end spline fork and the outer pipe fork and between the torsion assembly and the outer pipe fork, and clamp springs which are connected with the cross shafts in a nested mode are arranged on 4 end faces of each cross shaft.

The utility model discloses can reach following effect:

the utility model provides a balanced type torsion overload protection ware compares with prior art, has that operating stability is good, structural strength is high and long service life's characteristics. The problem of shaking caused by asymmetric centrifugal force is solved. Improve overload protection effect, avoid having the potential safety hazard that bolt fracture arouses to appear in the operation process.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the torque unit of the present invention.

Fig. 3 is an exploded view of the torque set of the present invention.

In the figure: the power input spline shaft comprises a power input spline shaft 1, a torsion assembly 2, a clamp spring 3, a cross shaft 4, an outer pipe fork 5, a transmission shaft 6, a tail end spline fork 7, a load spline shaft 8, a bolt 9, a flange fork 10, a grease nipple 11, a spline joint 12, a nut 13, a fork plate 14, a spline flange plate 15, a reinforcing block 16 and a steel ball 17.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): as shown in fig. 1, 2 and 3, a balanced type torsion overload protector comprises a transmission shaft 6, wherein one end of the transmission shaft 6 is provided with a power input spline shaft 1, the other end of the transmission shaft 6 is provided with a load spline shaft 8, outer tube forks 5 are arranged between the load spline shaft 8 and the transmission shaft 6 and between the power input spline shaft 1 and the transmission shaft 6, a torsion assembly 2 is arranged between the outer tube fork 5 and the power input spline shaft 1, and a tail end spline fork 7 is arranged between the outer tube fork 5 and the load spline shaft 8. Cross shafts 4 are arranged between the tail end spline fork 7 and the outer pipe fork 5 and between the torsion assembly 2 and the outer pipe fork 5, and clamp springs 3 which are connected with the cross shafts 4 in a nested mode are arranged on 4 end faces of the cross shafts 4. The torsion assembly 2 comprises a flange fork 10 movably hinged and fixed with the outer pipe fork 5, the flange fork 10 comprises a spline flange 15, a pair of fork plates 14 which are symmetrically distributed and integrated with the spline flange 15 are arranged on the spline flange 15, and a reinforcing block 16 is arranged between the end face of the outer side of each fork plate 14 and the upper end face of the spline flange 15. The reinforcing block 16 is provided with a grease nipple 11 which is in threaded nesting with the reinforcing block 16, 23 steel balls 17 are arranged between the grease nipple 11 and the reinforcing block 16, and the steel balls 17 are positioned in the reinforcing block 16 and are in limited clamping contact with the spline joint 12. And a spline joint 12 in spline type nested connection with the power input spline shaft 1 is arranged between the flange yoke 10 and the power input spline shaft 1. The flange fork 10 is provided with a pair of bolts 9 which are in penetrating type socket joint with the spline joint 12, and both sides of the end surface of the spline joint 12 are provided with nuts 13 which are in threaded type socket joint with the bolts 9.

In conclusion, the balanced type torsion overload protector has the characteristics of good operation stability, high structural strength and long service life. The problem of shaking caused by asymmetric centrifugal force is solved. Improve overload protection effect, avoid having the potential safety hazard that bolt fracture arouses to appear in the operation process.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without deviating from the basic characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In conclusion, the above description is only the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. A balanced type torsion overload protector is characterized in that: the power transmission device comprises a transmission shaft (6), wherein a power input spline shaft (1) is arranged at one end of the transmission shaft (6), a load spline shaft (8) is arranged at the other end of the transmission shaft (6), outer pipe forks (5) are arranged between the load spline shaft (8) and the transmission shaft (6) and between the power input spline shaft (1) and the transmission shaft (6), a torsion assembly (2) is arranged between the outer pipe fork (5) and the power input spline shaft (1), and a tail end spline fork (7) is arranged between the outer pipe fork (5) and the load spline shaft (8); the torsion assembly (2) comprises a flange fork (10) movably hinged and fixed with the outer pipe fork (5), and a spline joint (12) in spline type nested connection with the power input spline shaft (1) is arranged between the flange fork (10) and the power input spline shaft (1).

2. The balanced torque overload protector according to claim 1, wherein: the flange fork (10) is provided with a pair of bolts (9) which are in penetrating type socket joint with the spline joint (12), and nuts (13) which are in threaded type socket joint with the bolts (9) are arranged on two sides of the end face of the spline joint (12).

3. The balanced torque overload protector according to claim 1 or 2, wherein: the flange yoke (10) include spline ring flange (15), spline ring flange (15) on be equipped with a pair of fork board (14) that are the symmetric form and distribute and be integral structure with spline ring flange (15), fork board (14) outside terminal surface and spline ring flange (15) up end between be equipped with boss (16).

4. The balanced torque overload protector according to claim 3, wherein: the grease fitting is characterized in that a grease fitting (11) which is in threaded nesting with the reinforcing block (16) is arranged on the reinforcing block (16), a plurality of steel balls (17) are arranged between the grease fitting (11) and the reinforcing block (16), and the steel balls (17) are located in the reinforcing block (16) and are in limited clamping and embedding contact with the spline joint (12).

5. The balanced torque overload protector according to claim 1, wherein: the end spline fork (7) and the outer pipe fork (5) and the torsion assembly (2) and the outer pipe fork (5) are provided with cross shafts (4), and 4 end faces of each cross shaft (4) are provided with clamp springs (3) which are connected with the cross shafts (4) in an embedded mode.