CN215048240U - Telescopic boom and engineering truck applying same - Google Patents
Telescopic boom and engineering truck applying same Download PDFInfo
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- CN215048240U CN215048240U CN202120210831.7U CN202120210831U CN215048240U CN 215048240 U CN215048240 U CN 215048240U CN 202120210831 U CN202120210831 U CN 202120210831U CN 215048240 U CN215048240 U CN 215048240U
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Abstract
The utility model provides a telescopic boom and an engineering truck applying the telescopic boom, which belong to the technical field of telescopic devices and comprise a fixed arm, a first extending arm, a second extending arm, a moving part, a power mechanism, a first pulley block, a second pulley block, a third pulley and a third connecting rope; the first extending arm is connected with the fixed arm in a sliding way; the second extending arm is connected with the first extending arm in a sliding way; the moving part is in rolling connection with the roller path; the power mechanism is arranged on the fixed arm; the first pulley block is used for driving the first extending arm to extend out; the second pulley block is used for driving the second extension arm to retract; the extending lengths of the first extending arm and the second extending arm can be increased through the extending of the first extending arm and the second extending arm, so that the grabbing range is convenient to increase; because first fixed pulley and second fixed pulley are located the both ends of fixed arm respectively to be convenient for drive first stretching out arm and the stretching out or the reseing of second stretching out arm, be convenient for increase the scope of snatching.
Description
Technical Field
The utility model belongs to the technical field of the telescoping device, more specifically say, relate to a flexible arm and use machineshop car of this flexible arm.
Background
When the economic forest is harvested, most of the economic forest is located in a steep mountain land, and the harvested timber needs to be conveyed to a mountain road to convey the timber; the felled timber is far away from the mountain winding road, and the working arm of the existing engineering machinery only has the bending and stretching functions, so that the grabbing range is small.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flexible arm and applied this flexible arm's machineshop car aims at solving and snatchs the little technical problem of scope when logging to economic forest.
In order to achieve the above object, the utility model adopts the following technical scheme: providing a telescopic arm, which comprises a fixed arm, a first extending arm, a second extending arm, a moving part, a power mechanism, a first pulley block, a second pulley block, a third pulley and a third connecting rope; the fixed arm is provided with a raceway; the first extending arm is connected with the fixed arm in a sliding mode, and one end of the first extending arm can extend out of the fixed arm; the second extending arm is connected with the first extending arm in a sliding mode, and one end of the second extending arm can extend out of the first extending arm; the moving part is in rolling connection with the roller path; the power mechanism is arranged on the fixed arm and used for driving the moving part to roll on the roller path; the first pulley block comprises a first fixed pulley, a first movable pulley and a first connecting rope, the first fixed pulley is rotatably connected with the fixed arm, and the first movable pulley is rotatably connected with the moving part; the first connecting rope is wound on the first fixed pulley and the first movable pulley, and one end of the first connecting rope is connected with the other end of the first extending arm and used for driving the first extending arm to extend out; the second pulley block comprises a second fixed pulley, a second movable pulley and a second connecting rope, the second fixed pulley is rotatably connected with the fixed arm, and the second movable pulley is rotatably connected with the moving part; a second connecting rope is wound on the second fixed pulley and the second movable pulley, and one end of the second connecting rope is connected with the other end of the second extending arm and used for driving the second extending arm to retract; the second fixed pulley and the first fixed pulley are respectively positioned at two ends of the fixed arm; the third pulley is arranged at the extending end of the first extending arm; one end of a third connecting rope is connected with the fixed arm, and the other end of the third connecting rope passes around the third pulley and is connected with the other end of the second extending arm so as to drive the second extending arm to extend when the first extending arm extends; and when the second stretching arm retracts, the first stretching arm is driven to retract.
As another embodiment of the present application, a connection frame is disposed at the other end of the second protruding arm, and the second connection rope passes through the fixing arm and the first protruding arm and is connected to the connection frame.
As another embodiment of the present application, end caps are respectively disposed on the fixed arm and the first protruding arm, and the end caps are detachably connected to the fixed arm and the first protruding arm; the end cover is provided with a through hole for the second connecting rope to pass through, and the end cover is used for enabling the second connecting rope to pass through the fixing arm.
As another embodiment of the present application, a first sliding groove is formed on the fixed arm, and the first extending arm is slidably connected to the first sliding groove; the first extending arm is provided with a second sliding groove, and the second extending arm is connected with the second sliding groove in a sliding mode.
As another embodiment of the present application, the number of the third pulleys is two, and the two third pulleys are symmetrically arranged about the axis of the first protruding arm; one end of the third connecting rope is connected with the fixed arm, and the other end of the third connecting rope bypasses one of the third pulleys, is in contact with the other end of the second extending arm, and is connected with the fixed arm after bypassing the other third pulley.
As another embodiment of the present application, a fourth pulley is disposed at the other end of the second protruding arm, and the fourth pulley is disposed on the second protruding arm; the fourth pulley is used for contacting with the third connecting rope.
As another embodiment of the present application, the moving portion is provided with a roller, and the moving portion is connected with the raceway in a rolling manner through the roller.
As another embodiment of the present application, a guide rod is disposed in the rolling path, and a through hole for sliding with the guide rod is disposed on the moving portion.
As another embodiment of this application, be equipped with connecting portion on the fixed arm, connecting portion are used for being connected with the machineshop car.
The utility model provides a pair of telescopic boom's beneficial effect lies in: compared with the prior art, when the first extending arm extends out, the moving part is driven by the power mechanism to slide on the roller path, so that the first connecting rope can drive the first extending arm to extend out; one end of the third connecting rope is connected with the fixed arm, and the other end of the third connecting rope rounds the third pulley and is connected with the second extending arm, so that when the first extending arm extends out, the third connecting rope can drive the second extending arm to extend out, and the first extending arm and the second extending arm can extend out simultaneously; when the telescopic arm retracts, the power mechanism drives the moving part to reset, the second connecting rope pulls the second extending arm to retract, and the third connecting rope can drive the first extending arm to retract synchronously, so that the first extending arm and the second extending arm can reset conveniently; the extending lengths of the first extending arm and the second extending arm can be increased through the extending of the first extending arm and the second extending arm, so that the grabbing range is convenient to increase; because first fixed pulley and second fixed pulley are located the both ends of fixed arm respectively, consequently be convenient for drive moving part to the direction slip of first pulley or drive moving part to the direction slip of second pulley to be convenient for drive first stretching out arm and the stretching out or reseing of second stretching out arm, be convenient for increase the scope of snatching.
In order to achieve the above object, the present invention adopts another technical solution as follows: the engineering vehicle comprises a gripping apparatus and the telescopic arm, wherein the gripping apparatus is arranged at the extending end of the second extending arm.
The utility model provides a pair of machineshop car's beneficial effect lies in: compared with the prior art, through setting up the gripping apparatus in the end that stretches out of second cantilever arm, can be after the length extension of flexible arm, the gripping apparatus of being convenient for snatchs the timber of longer department, can increase the scope of snatching of gripping apparatus to be convenient for carry timber.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a telescopic boom according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic view of a third pulley portion of a telescopic boom according to an embodiment of the present invention;
fig. 4 is a schematic view of the second connecting rope of the telescopic boom winding around the second fixed pulley and the second movable pulley according to the embodiment of the present invention.
In the figure: 1. a fixed arm; 11. a raceway; 12. a guide wheel; 13. a connecting portion; 2. a first projecting arm; 3. a second projecting arm; 31. a connecting frame; 32. a fourth pulley; 4. a moving part; 41. a roller; 5. a power mechanism; 6. a first pulley block; 61. a first fixed pulley; 62. a first movable pulley; 63. a first connecting rope; 7. a second pulley block; 71. a second fixed pulley; 72. a second movable pulley; 73. a second connecting rope; 8. a third pulley; 9. and a third connecting rope.
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. A telescopic arm comprises a fixed arm 1, a first extending arm 2, a second extending arm 3, a moving part 4, a power mechanism 5, a first pulley block 6, a second pulley block 7, a third pulley 8 and a third connecting rope 9; the fixed arm 1 is provided with a raceway 11; the first extending arm 2 is connected with the fixed arm 1 in a sliding mode, and one end of the first extending arm can extend out of the fixed arm 1; the second extending arm 3 is connected with the first extending arm 2 in a sliding way, and one end of the second extending arm can extend out of the first extending arm 2; the moving part 4 is connected with the roller path 11 in a sliding way; the power mechanism 5 is arranged on the fixed arm 1 and used for driving the moving part 4 to slide on the roller path 11; the first pulley block 6 comprises a first fixed pulley 61, a first movable pulley 62 and a first connecting rope 63, the first fixed pulley 61 is rotatably connected with the fixed arm 1, and the first movable pulley 62 is rotatably connected with the moving part 4; a first connecting rope 63 is wound on the first fixed pulley 61 and the first movable pulley 62, and one end of the first connecting rope 63 is connected with the other end of the first projecting arm 2, and is used for driving the first projecting arm 2 to project; the second pulley block 7 comprises a second fixed pulley 71, a second movable pulley 72 and a second connecting rope 73, the second fixed pulley 71 is rotatably connected with the fixed arm 1, and the second movable pulley 72 is rotatably connected with the moving part 4; a second connecting rope 73 is wound on the second fixed pulley 71 and the second movable pulley 72, and one end of the second connecting rope 73 is connected with the other end of the second projecting arm 3 for driving the second projecting arm 3 and the first projecting arm 2 to retract; the second fixed pulley 71 and the first fixed pulley 61 are respectively positioned at two ends of the fixed arm 1; the third pulley 8 is arranged at the extending end of the first extending arm 2; one end of a third connecting rope 9 is connected with the fixed arm 1, and the other end of the third connecting rope rounds a third pulley 8 and is connected with the other end of the second extending arm 3 so as to drive the second extending arm 3 to extend when the first extending arm 2 extends; retraction of the second reach arm 3 drives retraction of the first reach arm 2.
Compared with the prior art, the telescopic boom and the engineering truck applying the telescopic boom have the advantages that when the telescopic boom is stretched out, the moving part 4 is driven by the power mechanism 5 to slide on the roller path 11, so that the first connecting rope 63 drives the first stretching arm 2 to stretch out; one end of the third connecting rope 9 is connected with the fixed arm 1, and the other end of the third connecting rope is wound around the third pulley 8 and connected with the second extending arm 3, so that when the first extending arm 2 extends out, the third connecting rope 9 can drive the second extending arm 3 to extend out, and the first extending arm 2 and the second extending arm 3 can extend out simultaneously; when retracting, the power mechanism 5 drives the moving part 4 to reset, the second connecting rope 73 pulls the second stretching arm 3 to retract, and the third connecting rope 9 can drive the first stretching arm 2 to retract synchronously, so that the first stretching arm 2 and the second stretching arm 3 can reset conveniently; the length of the first extension arm 2 and the second extension arm 3 can be increased by extending the first extension arm 2 and the second extension arm 3, thereby facilitating the increase of the gripping range; since the first fixed pulley 61 and the second fixed pulley 71 are respectively located at two ends of the fixed arm 1, it is convenient to drive the moving portion 4 to slide in the direction of the first pulley or drive the moving portion 4 to slide in the direction of the second pulley, thereby facilitating the extension or return of the first extension arm 2 and the second extension arm 3, and facilitating the increase of the range of grasping.
In the present embodiment, the number of the first connecting rope 63 between the first movable pulley 62 and the first fixed pulley 61 is 4, and therefore, when the first movable pulley 62 slides by a unit distance following the moving portion 4, the connecting end of the first connecting rope 63 and the first projecting arm 2 moves by a unit distance 4 times; because the third pulley 8 is arranged at the extending end of the first extending arm 2, and the third connecting rope 9 winds around the third pulley 8, and then both ends of the third connecting rope are respectively connected with the fixed arm 1 and the second extending arm 3, after the first extending arm 2 extends for 4 times of unit distance, the second extending arm 3 also extends for 4 times of unit distance relative to the first extending arm 2, and therefore, the second extending arm 3 extends for 8 times of unit distance relative to the moving part 4; the number of the second connecting rope 73 between the second movable pulley 72 and the second fixed pulley 71 is 8, when the second connecting rope 73 drives the second projecting arm 3 to retract, the end of the second connecting rope 73 connected with the second projecting arm 3 moves by 8 times of a unit distance, and the second movable pulley 72 moves by a unit distance because the number of the second connecting rope 73 on the second movable pulley 72 is 8; as described above, the moving section 4 always moves by a unit distance regardless of whether the telescopic arm is extended or returned.
As a specific embodiment of the present invention, please refer to fig. 1 to 4, the other end of the second extension arm 3 is provided with a connecting frame 31, and the second connecting rope 73 passes through the fixed arm 1 and the first extension arm 2 and is connected to the connecting frame 31; the power mechanism 5 comprises a hydraulic cylinder, a cylinder barrel of the hydraulic cylinder is fixed on the fixed arm 1, a piston rod of the hydraulic cylinder is fixedly connected with the moving part 4, and the moving part 4 can be driven to slide on the fixed arm 1 through the expansion and contraction of the piston rod; the connecting frame 31 is fixedly connected with the other end of the second extending arm 3 through a bolt; one end of the fixed arm 1 close to the connecting frame 31 is provided with a guide wheel 12, and one end of the second connecting rope 73 passes through the ends of the fixed arm 1 and the first projecting arm 2 and is fixedly connected with the connecting frame 31 after bypassing the guide wheel 12, so that the second connecting rope 73 drives the second projecting arm 3 and the first projecting arm 2 to reset.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, the fixed arm 1 and the first extending arm 2 are both provided with end covers, and the end covers are detachably connected to the fixed arm 1 and the first extending arm 2; the end cover is provided with a through hole for the second connecting rope 73 to pass through, and the end cover is used for enabling the second connecting rope 73 to pass through the fixed arm 1; external threads are arranged on the fixed arm 1 and the first extending arm 2, threaded holes are formed in the end covers, and the end covers are connected with the fixed arm 1 and the first extending arm 2 through threads; when connecting rope 73 to the second and changing, with the end cover screw-off on fixed arm 1 and the first cantilever 2, pass the through-hole of the end cover of fixed arm 1 and first cantilever 2 respectively with the one end of second connection rope 73, then fix the one end of second connection rope 73 on link 31, consequently, be convenient for connect rope 73 to the second and change.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 4, a first sliding groove is disposed on the fixed arm 1, and the first extending arm 2 is slidably connected to the first sliding groove; the first extending arm 2 is provided with a second sliding groove, and the second extending arm 3 is connected with the second sliding groove in a sliding manner; the first extending arm 2 is inserted into the first sliding groove and is in sliding connection with the first sliding groove, so that the sliding direction of the first extending arm 2 can be guided, meanwhile, the connection between the fixed arm 1 and the first extending arm 2 can be strengthened, and the situation that the first extending arm 2 is separated from the fixed arm 1 is reduced; the second projecting arm 3 is inserted into the second sliding groove and is connected with the second sliding groove in a sliding manner, so that the connection between the first projecting arm 2 and the second projecting arm 3 can be enhanced, the sliding direction of the second projecting arm 3 can be guided, and the situation that the second projecting arm 3 is separated from the first projecting arm 2 is reduced.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, two third pulleys 8 are provided, and the two third pulleys 8 are symmetrically disposed about the axis of the first extending arm 2; one end of a third connecting rope 9 is connected with the fixed arm 1, and the other end of the third connecting rope rounds one of the third pulleys 8, is in contact with the other end of the second extending arm 3, and is connected with the fixed arm 1 after rounding the other third pulley 8; the other end of the second extending arm 3 is provided with a fourth pulley 32, and the fourth pulley 32 is rotatably connected with the second extending arm 3; the fourth pulley 32 is used for contacting with the third connecting rope 9; part of the third connecting rope 9 is positioned in the second sliding groove of the first extending arm 2, and the third connecting rope 9 is U-shaped in the second sliding groove, so that the length of the third connecting rope 9 positioned in the second sliding groove can be reduced in the process that the third pulley 8 slides along with the first extending arm 2, and the third connecting rope 9 can conveniently drive the second extending arm 3 to slide; after the third connecting rope 9 winds around the fourth pulley 32, the third connecting rope is respectively positioned at two sides of the second extending arm 3, the second extending arm 3 is pulled to slide through the two sections of third connecting ropes 9, and the stability of the second extending arm 3 in the sliding process can be improved.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, a roller 41 is disposed on the moving portion 4, and the moving portion 4 is slidably connected to the raceway 11 through the roller 41; a guide rod is arranged in the roller path 11, and a through hole for sliding with the guide rod is arranged on the moving part 4; the guide bar can guide the sliding direction of the moving part 4, and can fix the relative position between the moving part 4 and the fixed arm 1, so that the moving part 4 can be prevented from being separated from the roller path 11 when the fixed arm 1 inclines; the moving part 4 is slidably connected with the raceway 11 through the roller 41, so that abrasion between the moving part 4 and the raceway 11 can be reduced, and sliding of the moving part 4 in the raceway 11 is facilitated.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, a first limiting block is disposed on a first sliding groove on the fixed arm 1, and a sliding groove for sliding the first limiting block is disposed on the first extending arm 2; when the first extending arm 2 extends or retracts, the sliding direction of the first extending arm 2 can be guided through the matching of the sliding groove and the first limiting block, so that the first extending arm 2 can extend or retract conveniently; a second limiting block is arranged in a second sliding groove of the first extending arm 2, and a sliding groove for the second limiting block to slide is formed in the second extending arm 3; the second cantilever 3 can lead the sliding direction of the second cantilever 3 through the cooperation of the second limiting block and the sliding groove, so that the second cantilever 3 can be conveniently extended and retracted.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, a connecting portion 13 is disposed on the fixed arm 1, and the connecting portion 13 is used for connecting with an engineering truck; connecting portion 13 is fixed on fixed arm 1, is convenient for be connected with the machineshop car to be convenient for the machineshop car utilizes flexible arm to carry timber.
In order to achieve the above object, the present invention adopts another technical solution as follows: the engineering vehicle comprises a gripping apparatus and the telescopic arm, wherein the gripping apparatus is arranged at the extending end of the second extending arm 3.
The utility model provides a pair of machineshop car's beneficial effect lies in: compared with the prior art, through setting up the gripping apparatus in the end that stretches out of second cantilever arm 3, can be after the length extension of flexible arm, the gripping apparatus of being convenient for snatchs the timber of longer department, can increase the scope of snatching of gripping apparatus to be convenient for carry timber.
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, characterized in that it comprises:
the fixed arm is provided with a roller path;
the first extending arm is connected with the fixed arm in a sliding mode, and one end of the first extending arm can extend out of the fixed arm;
the second extending arm is connected with the first extending arm in a sliding mode, and one end of the second extending arm can extend out of the first extending arm;
the moving part is in rolling connection with the roller path;
the power mechanism is arranged on the fixed arm and used for driving the moving part to roll on the roller path;
the first pulley block comprises a first fixed pulley, a first movable pulley and a first connecting rope, the first fixed pulley is rotatably connected with the fixed arm, and the first movable pulley is rotatably connected with the moving part; the first connecting rope is wound on the first fixed pulley and the first movable pulley, and one end of the first connecting rope is connected with the other end of the first extending arm and used for driving the first extending arm to extend out;
the second pulley block comprises a second fixed pulley, a second movable pulley and a second connecting rope, the second fixed pulley is rotatably connected with the fixed arm, and the second movable pulley is rotatably connected with the moving part; a second connecting rope is wound on the second fixed pulley and the second movable pulley, and one end of the second connecting rope is connected with the other end of the second extending arm and used for driving the second extending arm to retract; the second fixed pulley and the first fixed pulley are respectively positioned at two ends of the fixed arm;
a third pulley provided at an extension end of the first extension arm; and
one end of the third connecting rope is connected with the fixed arm, and the other end of the third connecting rope passes around the third pulley and is connected with the other end of the second extending arm so as to drive the second extending arm to extend when the first extending arm extends; and when the second stretching arm retracts, the first stretching arm is driven to retract.
2. A telescopic arm according to claim 1, wherein the other end of said second projecting arm is provided with a connecting frame, and said second connecting rope passes through said fixed arm and said first projecting arm and is connected to said connecting frame.
3. A telescoping arm as in claim 2, wherein said fixed arm and said first extension arm each have an end cap thereon, said end caps being removably attached to said fixed arm and said first extension arm; the end cover is provided with a through hole for the second connecting rope to pass through, and the end cover is used for enabling the second connecting rope to pass through the fixing arm.
4. A telescopic arm according to claim 1, wherein said fixed arm is provided with a first sliding groove, and said first projecting arm is slidably connected with said first sliding groove; the first extending arm is provided with a second sliding groove, and the second extending arm is connected with the second sliding groove in a sliding mode.
5. A telescopic arm according to claim 4, wherein there are two of said third pulleys, two of said third pulleys being symmetrically disposed about the axis of said first projecting arm; one end of the third connecting rope is connected with the fixed arm, and the other end of the third connecting rope bypasses one of the third pulleys, is in contact with the other end of the second extending arm, and is connected with the fixed arm after bypassing the other third pulley.
6. A telescopic arm according to claim 5, wherein the other end of said second projecting arm is provided with a fourth pulley, said fourth pulley being provided on said second projecting arm; the fourth pulley is used for contacting with the third connecting rope.
7. A telescopic arm according to claim 1, characterised in that the moving part is provided with rollers, and the moving part is in rolling connection with the raceways via the rollers.
8. A telescopic arm according to claim 7, wherein a guide rod is provided in said raceway, and a through hole for sliding with the guide rod is provided in said traveling part.
9. A telescopic arm according to claim 1, characterised in that the fixed arm is provided with a connection for connection to a work vehicle.
10. A working vehicle, characterized in that it comprises a gripper and a telescopic arm according to any of claims 1-9, said gripper being arranged at the projecting end of said second projecting arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120210831.7U CN215048240U (en) | 2021-01-26 | 2021-01-26 | Telescopic boom and engineering truck applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120210831.7U CN215048240U (en) | 2021-01-26 | 2021-01-26 | Telescopic boom and engineering truck applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215048240U true CN215048240U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120210831.7U Active CN215048240U (en) | 2021-01-26 | 2021-01-26 | Telescopic boom and engineering truck applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215048240U (en) |
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2021
- 2021-01-26 CN CN202120210831.7U patent/CN215048240U/en active Active
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