CN213540989U - Wedged anti-torsion telescopic working arm - Google Patents
Wedged anti-torsion telescopic working arm Download PDFInfo
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- CN213540989U CN213540989U CN202022435698.3U CN202022435698U CN213540989U CN 213540989 U CN213540989 U CN 213540989U CN 202022435698 U CN202022435698 U CN 202022435698U CN 213540989 U CN213540989 U CN 213540989U
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Abstract
The utility model discloses an antitorque flexible working arm of wedging formula, including outer arm and inner arm, circumference evenly processed has a plurality of frictions to spline the plane on the outer face of cylinder of inner arm, all is provided with wear-resisting the piece that splines on every friction splines the plane, it all is provided with the boss to correspond every friction spline planar position on the outer arm, wear-resisting both ends that splines the piece all match and are provided with movable wedge, be provided with the bolt assembly who promotes movable wedge wedging on the boss. On one hand, the telescopic working arm can avoid relative rotation between the outer arm and the inner arm by wedging the wear-resistant rotation stopping block through the movable wedge-shaped block, so that the torque bearing capacity of the telescopic working arm is ensured; on the other hand, the mode of cylindrical surface telescopic fit is adopted, and the device has the advantages of easily obtained materials, easiness in processing, easiness in centering and convenience in assembly, and the precision is guaranteed. In addition, the friction rotation-stopping plane of the milling process has limited influence on the thickness of the inner arm, so that the influence on the strength and the rigidity of the arm body of the inner arm is small.
Description
Technical Field
The utility model relates to a work arm technical field, concretely relates to antitorque flexible work arm of wedging formula.
Background
Among the mechanical equipment, usually in order to enlarge the operation scope, the arm adopts flexible working boom, and in some operational environment, flexible working boom need bear moment of flexure and moment of torsion load simultaneously, in order to bear the moment of torsion, need avoid rotating between the outer boom and the inner boom of flexible working boom, need carry out circumference location between the two promptly.
At present, the mode that realizes flexible arm circumference location mainly has two kinds, and one is to design into rectangle or multilateral type flexible arm cross-section, and the drawback that this kind of mode exists is: raw materials are difficult to obtain, the matching surface is troublesome to process, and the size is difficult to ensure; the other is through the flexible arm of face of cylinder complex, realizes circumferential positioning and bears the moment of torsion through the keybar between outer arm and the inner arm, and the drawback that this kind of mode exists is: on the one hand, need process many keyways, process complicated relatively, can improve the processing cost, on the other hand, the keyway needs certain degree of depth, can weaken the intensity and the rigidity of arm body.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an antitorque flexible work arm of wedging formula makes it when satisfying the moment of torsion requirement, has the material and easily obtains, easily processes and guarantees the precision, easily centering, convenient assembling's advantage.
The utility model discloses an above-mentioned problem is solved to following technical means: the utility model provides an antitorque flexible working arm of wedging formula, includes through the outer arm of the flexible complex of face of cylinder and inner arm, circumference evenly processed has a plurality of frictions to spline the plane on the outer face of cylinder of inner arm, all is provided with wear-resisting the piece that splines on every friction splines the plane, it all is provided with the boss to correspond every friction spline planar position on the outer arm, wear-resisting the piece that splines assembles with the boss nestification, and the both ends of wear-resisting the piece that splines are all matchd and are provided with movable wedge, be provided with on the boss and promote movable wedge axial displacement so that compress tightly the bolt assembly on the plane is splines to the wear-resisting piece that splines.
Furthermore, the movable wedge block is matched with the wear-resistant rotation stopping block through an inclined plane.
Further, the bolt assembly comprises a stud and a locking nut, and the stud penetrates through the boss axially through the threaded hole and pushes the movable wedge block to compress the wear-resistant rotation stopping block and then is tightened by the locking nut on the outer side.
Further, a magnet is arranged between the wear-resistant rotation stopping block and the inner side wall of the boss.
Furthermore, a magnet is also arranged between the movable wedge block and the inner top surface of the boss.
Furthermore, an annular bearing bush or a copper shaft sleeve is adopted for supporting between the inner arm and the outer arm.
Furthermore, a lubricating oil groove is formed in one surface, in contact with the friction rotation stopping plane, of the wear-resistant rotation stopping block, and an oil cup communicated with the lubricating oil groove is arranged on the outer arm.
The utility model has the advantages that:
the utility model discloses an antitorque flexible working arm of wedging formula, including outer arm and inner arm, circumference evenly processed has a plurality of frictions to spline the plane on the outer face of cylinder of inner arm, all is provided with wear-resisting the piece that splines on every friction splines the plane, it all is provided with the boss to correspond every friction spline planar position on the outer arm, wear-resisting both ends that splines the piece all match and are provided with movable wedge, be provided with the bolt assembly who promotes movable wedge wedging on the boss. On one hand, the telescopic working arm can avoid relative rotation between the outer arm and the inner arm by wedging the wear-resistant rotation stopping block through the movable wedge-shaped block, so that the torque bearing capacity of the telescopic working arm is ensured; on the other hand, the mode of cylindrical surface telescopic fit is adopted, and the device has the advantages of easily obtained materials, easiness in processing, easiness in centering and convenience in assembly, and the precision is guaranteed. In addition, the friction rotation-stopping plane of the milling process has limited influence on the thickness of the inner arm, so that the influence on the strength and the rigidity of the arm body of the inner arm is small.
Drawings
The invention is further described with reference to the following figures and examples.
Fig. 1 is a longitudinal sectional view of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional partial view of an embodiment of the present invention;
fig. 3 is an assembly diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1-3, the wedge-type anti-torsion telescopic working arm of the present embodiment includes an outer arm 1 and an inner arm 2 telescopically engaged with each other through a cylindrical surface, the outer arm 1 and the inner arm 2 are supported by an annular bushing or a copper bush 10, a plurality of friction rotation-stopping planes are uniformly machined on an outer cylindrical surface of the inner arm 2 in a circumferential direction, the number of the friction rotation-stopping planes is determined according to specific conditions, generally four friction rotation-stopping planes are milled, if the working arm has a small bearing torque, only two friction rotation-stopping planes are symmetrically milled, and if the working arm has a large bearing torque, six or more friction rotation-stopping planes are uniformly milled, so as to improve the ability of bearing the torque. All be provided with wear-resisting splining 4 on every friction splining plane, the position that corresponds every friction splining plane on the outer arm 1 all is provided with boss 3, boss 3 can with outer arm integrated into one piece, also can be in the same place with outer arm welded fastening. Wear-resisting splining 4 and 3 nested assemblies of boss, the both ends of wear-resisting splining 4 all match and are provided with movable wedge 7, through the inclined plane cooperation between movable wedge 7 and the wear-resisting splining 4, be provided with on the boss 3 and promote movable wedge 7 axial displacement so that compress tightly the bolt assembly on the friction splining plane with wear-resisting splining 4. Particularly, the bolt assembly comprises a stud 8 and a locking nut 9, the stud 8 axially penetrates into the boss through the threaded hole, the movable wedge-shaped block is pushed to compress the wear-resistant rotation stopping block, then the locking nut is used on the outer side, and the stud is a hexagon socket head stud.
By adopting the telescopic working arm of the embodiment, on one hand, the movable wedge-shaped block is wedged with the wear-resistant rotation stop block, so that the relative rotation between the outer arm and the inner arm can be avoided, and the torque bearing capacity of the telescopic working arm is ensured; on the other hand, the mode of cylindrical surface telescopic fit is adopted, and the device has the advantages of easily obtained materials, easiness in processing, easiness in centering and convenience in assembly, and the precision is guaranteed. In addition, the friction rotation-stopping plane of the milling process has limited influence on the thickness of the inner arm, so that the influence on the strength and the rigidity of the arm body of the inner arm is small.
As a further improvement to the above technical solution, a magnet 5 is disposed between the wear-resistant rotation stop block 4 and the inner side wall of the boss 3, or a magnet may be disposed between the movable wedge block 7 and the inner top surface of the boss 3, so as to improve the fixing performance after assembly.
As a further improvement of the technical scheme, a lubricating oil groove is formed in one surface, in contact with the friction rotation stopping plane, of the wear-resistant rotation stopping block, an oil cup 6 communicated with the lubricating oil groove is arranged on the outer arm 1, lubricating grease is injected between the outer arm and the inner arm through the oil cup, and friction and abrasion during telescopic movement of the inner arm, the outer arm and the wear-resistant rotation stopping block can be reliably reduced.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (7)
1. The utility model provides an antitorque flexible working arm of wedge-caulking type, includes outer arm and the inner arm through the flexible complex of face of cylinder, its characterized in that: circumference even processing has a plurality of frictions to splines the plane on the outer face of cylinder of inner arm, all is provided with wear-resisting the commentaries on classics piece on every friction splines the plane, it all is provided with the boss to correspond every friction splines planar position on the outer arm, wear-resisting the piece of splining and the nested assembly of boss, the both ends of wear-resisting the commentaries on classics piece all match and are provided with movable wedge, be provided with on the boss and promote movable wedge axial displacement to compress tightly the bolt assembly on the friction splines plane with wear-resisting the commentaries on classics piece.
2. The wedge-caulking-type anti-torsion telescopic working arm according to claim 1, wherein: the movable wedge-shaped block is matched with the wear-resistant rotation stopping block through an inclined plane.
3. The wedge-caulking-type anti-torsion telescopic working arm according to claim 2, wherein: the bolt assembly comprises a stud and a locking nut, and the stud axially penetrates into the boss through the threaded hole and pushes the movable wedge block to compress the wear-resistant rotation stopping block and then is tightened by the locking nut on the outer side.
4. The wedge-caulking type anti-torsion telescopic working arm according to any one of claims 1 to 3, wherein: and a magnet is arranged between the wear-resistant rotation stopping block and the inner side wall of the boss.
5. The wedge-caulking-type anti-torsion telescopic working arm according to claim 4, wherein: and a magnet is also arranged between the movable wedge block and the inner top surface of the boss.
6. The wedge-caulking-type anti-torsion telescopic working arm according to claim 5, wherein: and an annular bearing bush or a copper shaft sleeve is adopted for supporting between the inner arm and the outer arm.
7. The wedge-caulking-type anti-torsion telescopic working arm according to claim 6, wherein: and a lubricating oil groove is formed in one surface of the wear-resistant rotation stopping block, which is in contact with the friction rotation stopping plane, and an oil cup communicated with the lubricating oil groove is arranged on the outer arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022435698.3U CN213540989U (en) | 2020-10-28 | 2020-10-28 | Wedged anti-torsion telescopic working arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022435698.3U CN213540989U (en) | 2020-10-28 | 2020-10-28 | Wedged anti-torsion telescopic working arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213540989U true CN213540989U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022435698.3U Active CN213540989U (en) | 2020-10-28 | 2020-10-28 | Wedged anti-torsion telescopic working arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213540989U (en) |
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2020
- 2020-10-28 CN CN202022435698.3U patent/CN213540989U/en active Active
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