CN217676510U - Telescopic arm - Google Patents
Telescopic arm Download PDFInfo
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- CN217676510U CN217676510U CN202123433672.6U CN202123433672U CN217676510U CN 217676510 U CN217676510 U CN 217676510U CN 202123433672 U CN202123433672 U CN 202123433672U CN 217676510 U CN217676510 U CN 217676510U
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- arm
- sliding
- pin shaft
- fixed
- wire rope
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Abstract
The utility model provides a telescopic arm, belonging to the technical field of telescopic devices, comprising a fixed arm and a sliding arm, wherein the fixed arm is provided with a sliding cavity which is communicated with one end of the fixed arm to form an opening; the sliding arm is in sliding fit with the sliding cavity; the telescopic arm further comprises a pin shaft, the pin shaft is detachably connected to the inner side end of the sliding arm, and the pin shaft is suitable for being fixed with one end of the steel wire rope; the outer wall surface of the fixed arm is provided with an access hole communicated with the sliding cavity, and the pin shaft faces the access hole; compared with the prior art, through the cooperation of fixed arm, sliding arm and round pin axle, need not dismouting sliding arm when changing wire rope, consequently can reduce work load, be convenient for improve change efficiency.
Description
Technical Field
The utility model belongs to the technical field of the telescoping device, concretely relates to flexible arm.
Background
When felling economic forests, most of economic forests are located in steep mountains, and the grab bucket is driven by the telescopic arm to grab and convey the woods in the mountains; in the prior art, the steel wire rope is used for driving the telescopic arm to extend and retract, and when the steel wire rope is damaged, the steel wire rope needs to be replaced; the telescopic boom in the prior art comprises a fixed boom and a sliding boom, wherein the fixed boom is of a sleeve structure, one end of the sliding boom is positioned in a sleeve, and the sliding boom is in sliding fit with the fixed boom; one end of the steel wire rope is fixed at the inner side end of the sliding arm.
The replacement mode in the prior art is as follows: the sliding arm is detached from the fixed arm, then the steel wire rope fixed at the inner side end of the sliding arm is detached, and the steel wire rope is replaced; after the replacement, the sliding arm needs to be installed in the fixed arm. However, the above operation method requires repeated attachment and detachment, and thus requires a large amount of work and is inefficient in replacement.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a flexible arm aims at solving among the prior art to the wire rope when changing technical problem that work load is big, change inefficiency.
In order to achieve the purpose, the utility model adopts the technical proposal that:
the telescopic arm comprises a fixed arm and a sliding arm, wherein a sliding cavity is arranged on the fixed arm, and the sliding cavity is communicated with one end of the fixed arm to form an opening; the sliding arm is in sliding fit with the sliding cavity; the telescopic arm further comprises:
the pin shaft is detachably connected to the inner side end of the sliding arm and is suitable for being fixed with one end of the steel wire rope;
the outer wall surface of the fixed arm is provided with an access hole communicated with the sliding cavity, and the pin shaft faces the access hole.
In one possible implementation, the access opening is located at an end of the stationary arm remote from the opening.
In a possible implementation manner, a pulley is arranged on the pin shaft, and a connecting ring suitable for being connected with a steel wire rope is fixedly arranged on the outer peripheral wall of the pulley;
the pulley and the pin roll are in running fit, and the pin roll is provided with a limiting structure suitable for axially limiting the pulley.
In some embodiments, the limiting structure comprises a limiting part fixed at the inner end of the sliding arm, the limiting part is provided with a containing cavity, and the pulley is positioned in the containing cavity;
the limiting portion is provided with a through hole suitable for the pin shaft to be inserted, and the through hole is communicated with the accommodating cavity.
In some embodiments, a baffle is fixedly arranged at one end of the pin shaft, and the baffle is suitable for contacting with one side of the limiting part;
the other end of the pin shaft is provided with a fastener, and the fastener is provided with a first end connected with the pin shaft and a second end connected with the other side of the limiting part.
In some embodiments, the peripheral wall of the pin shaft is provided with a connecting groove, the fastening member is a circlip for the shaft, the circlip for the shaft is inserted into the connecting groove, and the circlip for the shaft has a contact surface contacting with the limiting part.
In a possible implementation manner, a sealing plate for sealing the access opening is arranged on the fixed arm, and the sealing plate is connected with the fixed arm.
In some embodiments, the sealing plate is provided with a viewing port aligned with the pin.
In a possible implementation manner, a threaded hole is formed in the inner side end of the sliding arm, and an external thread suitable for being connected with the threaded hole is formed in the outer peripheral wall of the pin shaft.
In a possible implementation manner, a guide sleeve is arranged on the inner wall surface of the sliding cavity close to the cavity bottom, and the guide sleeve is suitable for guiding the steel wire rope in the sliding cavity.
In the embodiment of the application, when the steel wire rope is replaced, the position of the sliding arm is adjusted, so that a pin shaft at the inner side end of the sliding arm is aligned with an access hole in the fixed arm; taking out the pin shaft at the inner side end of the sliding arm from the access hole, and separating the old steel wire rope from the pin shaft; fixing a new steel wire rope with an old steel wire rope, and finishing the replacement process of the new steel wire rope in the process of drawing the old steel wire rope; after the new steel wire rope is installed, fixing one end of the new steel wire rope on a pin shaft, and installing the pin shaft at the inner side end of the sliding arm; the sliding arm does not need to be repeatedly disassembled and assembled, the workload of replacing the steel wire rope can be reduced, and the replacement efficiency is improved.
The utility model provides a pair of telescopic boom compares with prior art, through the cooperation of fixed arm, sliding arm and round pin axle, need not the dismouting sliding arm when changing wire rope, consequently can reduce work load, is convenient for improve change efficiency.
Drawings
Fig. 1 is a schematic structural view of a telescopic boom according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of an access hole portion of a telescopic boom according to an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a schematic view of a baffle portion of a telescopic arm according to an embodiment of the present invention.
Description of reference numerals: 1. a fixed arm; 11. a sliding cavity; 12. an access hole; 13. a through hole; 2. a slide arm; 21. an inner end; 3. a pin shaft; 31. a pulley; 32. a connecting ring; 33. a baffle plate; 34. a circlip for the shaft; 4. a limiting part; 41. an accommodating chamber; 5. closing the plate; 6. a guide sleeve.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4, a telescopic boom according to the present invention will be described. The telescopic arm comprises a fixed arm 1 and a sliding arm 2, wherein a sliding cavity 11 is arranged on the fixed arm 1, and the sliding cavity 11 is communicated with one end of the fixed arm 1 to form an opening; the sliding arm 2 is in sliding fit with the sliding cavity 11; the telescopic arm further comprises a pin shaft 3, the pin shaft 3 is detachably connected to the inner side end 21 of the sliding arm 2, and the pin shaft 3 is suitable for being fixed with one end of the steel wire rope; wherein, the outer wall of fixed arm 1 is equipped with maintenance mouth 12 with sliding chamber 11 intercommunication, and round pin axle 3 is towards maintenance mouth 12.
In the embodiment of the application, when the steel wire rope is replaced, the position of the sliding arm 2 is adjusted, so that the pin shaft 3 at the inner side end 21 of the sliding arm 2 is aligned with the access hole 12 in the fixed arm 1; taking the pin shaft 3 at the inner side end 21 of the sliding arm 2 out of the access hole 12, and separating the old steel wire rope from the pin shaft 3; fixing a new steel wire rope with an old steel wire rope, and finishing the replacement process of the new steel wire rope in the process of drawing the old steel wire rope; after the new steel wire rope is installed, fixing one end of the new steel wire rope on the pin shaft 3, and installing the pin shaft 3 at the inner side end 21 of the sliding arm 2; need not to dismantle slider arm 2 repeatedly, work load when can reducing the change wire rope improves and changes efficiency.
The utility model provides a pair of telescopic boom compares with prior art, through fixed arm 1, slide arm 2 and the cooperation of round pin axle 3, need not dismouting slide arm 2 when changing wire rope, consequently can reduce work load, is convenient for improve change efficiency.
In some embodiments, as shown in fig. 1-4, access opening 12 is located at an end of stationary arm 1 distal from the opening; when changing wire rope, withdraw slide arm 2 in fixed arm 1's slip chamber 11, can increase fixed arm 1 to the support area of slide arm 2, and then improve fixed arm 1's support performance, reduce the potential safety hazard of dismantling the in-process and existence.
In some embodiments, as shown in fig. 1 to 4, the pin 3 is provided with a pulley 31, and the outer peripheral wall of the pulley 31 is fixedly provided with a connecting ring 32 adapted to be connected with a steel wire rope; the pulley 31 is in running fit with the pin shaft 3, and the pin shaft 3 is provided with a limit structure suitable for axially limiting the pulley 31; the pin shaft 3 and the pulley 31 are coaxially arranged; after the steel wire rope is replaced, when the pulley 31 can rotate on the pin shaft 3 by tensioning the steel wire rope, the position of the connecting ring 32 can be adjusted, so that the connecting ring 32 rotates to the optimal working position, the steel wire rope can pull the connecting ring 32 along the diameter direction of the connecting ring 32, the tangential force of the steel wire rope on the connecting ring 32 is reduced, and the service life of the connecting ring 32 can be prolonged.
In some embodiments, as shown in fig. 1 to 4, the limiting structure includes a limiting portion 4 fixed to the inner end 21 of the sliding arm 2, the limiting portion 4 has a receiving cavity 41, and the pulley 31 is located in the receiving cavity 41; the limiting part 4 is provided with a through hole suitable for the pin shaft 3 to be inserted, and the through hole is communicated with the accommodating cavity 41; two sides of the pulley 31 are in contact with two sides of the accommodating cavity 41, and the pin shaft 3 is inserted into the through hole in the limiting part 4, so that the axial position of the pulley 31 can be limited, and the sliding of the pulley 31 in the axial direction is reduced.
In some embodiments, as shown in fig. 1 to 4, a baffle 33 is fixedly disposed at one end of the pin 3, and the baffle 33 is adapted to contact with one side of the position-limiting portion 4; the other end of the pin shaft 3 is provided with a fastener, and the fastener is provided with a first end connected with the pin shaft 3 and a second end connected with the other side of the limiting part 4; after the pin shaft 3 passes through the through hole in the limiting part 4, the baffle 33 at one end of the pin shaft 3 is in contact with one side of the limiting part 4, the fastener is connected with the other end of the pin shaft 3, and the fastener is in contact with the other side of the limiting part 4, so that the pin shaft 3 can be axially limited.
In some embodiments, as shown in fig. 1 to 4, the outer peripheral wall of the pin shaft 3 is provided with a connecting groove, the fastening member is a circlip 34 for the shaft, the circlip 34 for the shaft is inserted into the connecting groove, and the circlip 34 for the shaft has a contact surface contacting with the limiting part 4; the pin 3 can be axially restrained by the engagement of the retainer 33 and the shaft circlip 34, and therefore the pin 3 can be attached to the inner end 21 of the slider arm 2.
A through hole 13 is arranged on one side of the fixed arm 1 opposite to the access hole 12, and an elastic collar 34 for the shaft is positioned on one side of the limiting part 4 facing the through hole; when the pin shaft 3 needs to be disassembled, the caliper penetrates through the through hole in the fixing arm 1 and the shaft elastic check ring 34 on the pin shaft 3 is disassembled, so that the pin shaft 3 can be taken out of the access hole 12.
In some embodiments, as shown in fig. 1 to 4, the fixed arm 1 is provided with a sealing plate 5 for closing the access opening 12, and the sealing plate 5 is connected with the fixed arm 1; the closing plate 5 is provided with an observation port aligned with the pin shaft 3; shrouding 5 and fixed arm 1 are connected through the bolt, and the observation window on shrouding 5 can be observed pulley 31 and round pin axle 3's state, when pulley 31 or round pin axle 3 appear damaging, pull down shrouding 5 and can change pulley 31 or round pin axle 3.
It should be noted that the observation port on the closing plate 5 can be provided with a transparent plate, which not only can reduce the impurities entering the fixing arm 1, but also can facilitate the observation of the working states of the pin shaft 3 and the pulley 31.
In some embodiments, as shown in fig. 1 to 4, the inner end 21 of the sliding arm 2 is provided with a threaded hole, and the outer peripheral wall of the pin 3 is provided with an external thread adapted to be connected to the threaded hole; the pin shaft 3 is in threaded fit with the inner side end 21 of the sliding arm 2, so that the pin shaft 3 can be conveniently disassembled and assembled, and the replacement efficiency can be improved.
In some embodiments, as shown in fig. 1 to 4, the inner wall surface of the sliding cavity 11 near the cavity bottom is provided with a guide sleeve 6, and the guide sleeve 6 is suitable for guiding the steel wire rope in the sliding cavity 11; after the steel wire rope passes through the guide sleeve 6, the guide sleeve 6 can guide the steel wire rope; the guide sleeve 6 is horizontally arranged and faces the outer peripheral wall of the pulley 31, and the axis of the guide sleeve 6 passes through the center of the pulley 31; when the guide sleeve 6 guides the steel wire rope, the friction between the steel wire rope and the inner wall of the guide sleeve 6 can be reduced, and the service life of the steel wire rope is prolonged conveniently.
It should be noted that the telescopic boom of the present application may also be a three-section boom, the first section boom and the second section boom are equivalent to the fixed boom 1 and the sliding boom 2, and the structures of the second section boom and the third section boom are the same as those of the first section boom and the second section boom, and are not described herein again.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A telescopic arm comprises a fixed arm and a sliding arm, wherein a sliding cavity is arranged on the fixed arm, and the sliding cavity is communicated with one end of the fixed arm to form an opening; the sliding arm is in sliding fit with the sliding cavity; its characterized in that, flexible arm still includes:
the pin shaft is detachably connected to the inner side end of the sliding arm and is suitable for being fixed with one end of the steel wire rope;
the outer wall surface of the fixed arm is provided with an access hole communicated with the sliding cavity, and the pin shaft faces the access hole.
2. A telescoping arm as in claim 1, wherein said access opening is located at an end of said stationary arm distal from said opening.
3. The telescopic boom of claim 1, wherein the pin is provided with a pulley, and the outer peripheral wall of the pulley is fixedly provided with a connecting ring suitable for being connected with a steel wire rope;
the pulley and the pin roll are in running fit, and the pin roll is provided with a limiting structure suitable for axially limiting the pulley.
4. The telescopic arm according to claim 3, wherein the limiting structure comprises a limiting part fixed at the inner end of the sliding arm, the limiting part is provided with a containing cavity, and the pulley is positioned in the containing cavity;
the limiting portion is provided with a through hole suitable for the pin shaft to be inserted, and the through hole is communicated with the accommodating cavity.
5. The telescopic arm according to claim 4, wherein a baffle is fixedly arranged at one end of the pin shaft, and the baffle is suitable for contacting with one side of the limiting part;
the other end of the pin shaft is provided with a fastener, and the fastener is provided with a first end connected with the pin shaft and a second end connected with the other side of the limiting part.
6. The telescopic arm according to claim 5, wherein the outer peripheral wall of the pin shaft is provided with a connecting groove, the fastening member is a circlip for a shaft, the circlip for a shaft is inserted into the connecting groove, and the circlip for a shaft has a contact surface contacting with the limiting portion.
7. A telescopic arm according to claim 1 or 2, wherein said fixed arm is provided with a sealing plate adapted to close said access opening, said sealing plate being attached to said fixed arm.
8. The telescoping arm of claim 7, wherein said sealing plate has a viewing port aligned with said pin.
9. The telescopic arm according to claim 1, wherein the inner end of the sliding arm is provided with a threaded hole and the outer peripheral wall of the pin is provided with an external thread adapted to be connected to the threaded hole.
10. The telescopic arm according to claim 1, wherein the inner wall surface of the sliding chamber near the chamber bottom is provided with a guide sleeve adapted to guide the wire rope in the sliding chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123433672.6U CN217676510U (en) | 2021-12-30 | 2021-12-30 | Telescopic arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123433672.6U CN217676510U (en) | 2021-12-30 | 2021-12-30 | Telescopic arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217676510U true CN217676510U (en) | 2022-10-28 |
Family
ID=83726225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123433672.6U Active CN217676510U (en) | 2021-12-30 | 2021-12-30 | Telescopic arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217676510U (en) |
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2021
- 2021-12-30 CN CN202123433672.6U patent/CN217676510U/en active Active
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