CN216030439U

CN216030439U - Auxiliary positioning device for replacing big arm and small arm of excavator

Info

Publication number: CN216030439U
Application number: CN202122324636.XU
Authority: CN
Inventors: 覃云翔
Original assignee: Guangxi Wansen Machinery Technology Co ltd
Current assignee: Guangxi Wansen Machinery Technology Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-15
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses an auxiliary positioning device for replacing a big arm and a small arm of an excavator, which comprises a big mechanical arm and a small mechanical arm arranged in the big mechanical arm, wherein the top of the big mechanical arm is rotatably connected with a hydraulic cylinder, the other end of the hydraulic cylinder is rotatably connected with the top of the small mechanical arm, one sides of the small mechanical arms far away from each other are respectively provided with a groove, and two symmetrical limiting components for limiting the small mechanical arm are arranged in the big mechanical arm. Simple operation, no need of consuming a large amount of manpower, and quick installation.

Description

Auxiliary positioning device for replacing big arm and small arm of excavator

Technical Field

The utility model relates to the technical field of excavators, in particular to an auxiliary positioning device for replacing a big arm and a small arm of an excavator.

Background

An excavator, also called excavating machine, also called excavator, is an earth moving machine which excavates materials above or below a bearing surface by a bucket and loads the materials into a transport vehicle or unloads the materials to a stockyard, the materials excavated by the excavator mainly comprise soil, coal, silt and soil and rock after pre-loosening, and the excavator is relatively fast in development in recent years and becomes one of the most important engineering machines in engineering construction.

The excavator is after long-time the use, certain damage can appear in the big small arm of excavator, the big small arm that needs to the excavator this moment is dismantled, change, big small arm is comparatively simple at the dismantlement in-process, but when big small arm reinstallation, because big small arm volume is great, consequently, when the installation need a plurality of staff to use corresponding apparatus to mutually support the side can carry out the primary erection, in addition because big small arm volume is great, after the primary erection, still need carry out meticulous adjustment to the position of big small arm, guarantee that the rotation center pin level of big small arm aligns, the side can be connected big small arm through the axis of rotation, the troublesome poeration, consume a large amount of manpowers, and the installation effectiveness is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of difficult installation of a big arm and a small arm, low installation efficiency and large consumption of manpower in the prior art, and provides an auxiliary positioning device for replacing the big arm and the small arm of an excavator.

In order to achieve the purpose, the utility model adopts the following technical scheme:

big or small arm of excavator is changed and is used auxiliary positioning device, including the big arm of machinery and the mechanical forearm of setting in the big arm of machinery, the top of the big arm of machinery is rotated and is connected with the pneumatic cylinder, the other end of pneumatic cylinder is rotated with the top of mechanical forearm and is connected, one side that the mechanical forearm kept away from each other all is equipped with the recess, be equipped with two symmetrical spacing subassemblies that are used for spacing to the mechanical forearm in the big arm of machinery, one side fixedly connected with rack that the mechanical forearm is close to the big arm of machinery, be equipped with in the big arm of machinery and be used for making the mechanical forearm carry out gliding slip subassembly, be equipped with two symmetrical locating component that are used for advancing line location to the mechanical forearm in the big arm of machinery, it has same pivot to transversely run through in big arm of machinery and the mechanical forearm.

Preferably, spacing subassembly is including setting up the first spout in the big arm of machinery, sliding connection has the slide in the first spout, and the one end of pivot runs through the slide, one side inner wall that mechanical forearm was kept away from to first spout rotates and is connected with first threaded rod, first threaded rod runs through the slide near one end screw thread of mechanical forearm, and the other end of first threaded rod extends to one side of the big arm of machinery, the slide is close to two symmetrical axis of rotation of one side fixedly connected with of mechanical forearm, the outer wall of axis of rotation rotates the cover and is equipped with the gyro wheel that extends to in the recess, and gyro wheel and recess roll cooperation.

Preferably, the slip subassembly is including setting up the second spout in the big arm of machinery, sliding connection has the slider in the second spout, one side fixedly connected with U type piece that the slider is close to the mechanical forearm, one side inner wall that the mechanical forearm was kept away from to the second spout rotates and is connected with the second threaded rod, the one end screw thread that the second threaded rod is close to the mechanical forearm runs through the slider, it transversely rotates in the second spout and is connected with the worm, and the one end of worm extends to one side of the big arm of machinery, the fixed cover of outer wall of second threaded rod is equipped with the worm wheel with worm engaged with, rotate through the dwang in the U type piece and be connected with the gear with rack engaged with, one side fixedly connected with micro-motor of U type piece, and micro-motor's output shaft and dwang fixed connection.

Preferably, locating component includes the connecting block of connecting in big arm one end of machinery through bolt fixed connection, it has the round pin to slide through in the connecting block, be equipped with in the mechanical forearm with round pin matched with locating hole, the outer wall cover of round pin is equipped with the extension spring, the one end fixedly connected with plectane of mechanical forearm is kept away from to the round pin, and the both ends of extension spring one side fixed connection who is close to each other with plectane and connecting block respectively.

Preferably, the top ends of the large mechanical arm and the small mechanical arm are fixedly connected with two symmetrical bases, one side, close to each other, of each of the two bases at the top of the large mechanical arm is rotatably connected with the hydraulic cylinder through a shaft, and one side, close to each other, of each of the two bases at the top of the small mechanical arm is rotatably connected with the other end of the hydraulic cylinder through a shaft.

Preferably, the outer wall of the roller is fixedly sleeved with a rubber layer, and the friction force between the roller and the groove can be increased through the rubber layer.

Preferably, one side of the U-shaped block, which is close to the mechanical forearm, is provided with a plurality of sliding wheels, and the sliding wheels are all contacted with the mechanical forearm, so that the mechanical forearm can be limited to a certain extent through the sliding wheels, and the gear and the rack are prevented from being excessively meshed in the moving process of the U-shaped block.

Preferably, the first chute is far away from one side inner wall fixedly connected with slide bar of mechanical forearm, and the other end of slide bar slides and runs through the slide, can avoid the slide to appear rocking at the gliding in-process of slide through the slide bar.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the connecting block is fixed on one side of the mechanical large arm through the bolt, when the pin is aligned with the positioning hole, the pin extends into the positioning hole under the action of the tensile force of the tension spring to position the mechanical small arm, and after the installation is finished, the connecting block can be detached from the mechanical large arm and used for installing the other large arm and the other small arm;

2. according to the utility model, the small motor is started to drive the gear to rotate, the small mechanical arm can be driven to slide through the rack along with the rotation of the gear, and the large mechanical arm and the small mechanical arm can be installed without manually moving the small mechanical arm;

3. according to the utility model, the sliding plate and the sliding block can slide towards the small mechanical arm by rotating the first threaded rod and the worm, so that the small mechanical arm can be clamped, and the large mechanical arm and the small mechanical arm can be conveniently installed in the later period.

The mechanical forearm clamp is simple in structure, the mechanical forearm can be preliminarily mounted and clamped by rotating the first threaded rod and the worm, the small motor can be conveniently started to enable the mechanical forearm to automatically move in the later period, in addition, the mechanical forearm can be positioned by matching the pin with the positioning hole, the rotating central shafts of the mechanical forearm and the mechanical forearm are horizontally aligned, the rotating shaft can be conveniently inserted between the mechanical forearm and the mechanical forearm in the later period, the operation is simple, a large amount of manpower is not required, and the installation is rapid.

Drawings

FIG. 1 is a three-dimensional view of an auxiliary positioning device for replacing a boom of an excavator according to the present invention;

FIG. 2 is a three-dimensional view of a mechanical boom of the auxiliary positioning device for replacing the boom of the excavator according to the present invention;

FIG. 3 is a three-dimensional view of a U-shaped block and a mechanical arm of the auxiliary positioning device for replacing the big arm and the small arm of the excavator, which is provided by the utility model;

FIG. 4 is a three-dimensional view of a mechanical forearm of an auxiliary positioning device for replacing a forearm of an excavator according to the present invention;

FIG. 5 is a three-dimensional view of the slide block and the gear of the auxiliary positioning device for replacing the big arm and the small arm of the excavator, which is provided by the utility model;

FIG. 6 is a three-dimensional view of a slide plate of an auxiliary positioning device for replacing a big arm and a small arm of an excavator according to the present invention;

FIG. 7 is a three-dimensional view of a mechanical boom and a connecting block of the auxiliary positioning device for replacing the boom and the forearm of the excavator, which is provided by the utility model;

fig. 8 is an enlarged view of the auxiliary positioning device for replacing the boom of the excavator according to the present invention at a position a.

In the figure: 1. a mechanical big arm; 2. a mechanical forearm; 3. a hydraulic cylinder; 4. a first chute; 5. a slide plate; 6. a slide bar; 7. a first threaded rod; 8. a groove; 9. a rotating shaft; 10. a roller; 11. a rotating shaft; 12. a rack; 13. a second chute; 14. a second threaded rod; 15. a slider; 16. a U-shaped block; 17. a gear; 18. a small-sized motor; 19. a worm gear; 20. a worm; 21. connecting blocks; 22. a pin; 23. a tension spring; 24. a circular plate; 25. positioning holes; 26. a base; 27. a sliding wheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.

Example one

Referring to fig. 1-8, the auxiliary positioning device for replacing the big arm and the small arm of the excavator comprises a big mechanical arm 1 and a small mechanical arm 2 arranged in the big mechanical arm 1, a hydraulic cylinder 3 is rotatably connected to the top of the big mechanical arm 1, the other end of the hydraulic cylinder 3 is rotatably connected to the top of the small mechanical arm 2, a groove 8 is formed in one side, away from each other, of the small mechanical arm 2, two symmetrical limiting assemblies used for limiting the small mechanical arm 2 are arranged in the big mechanical arm 1, a rack 12 is fixedly connected to one side, close to the big mechanical arm 1, of the small mechanical arm 2, a sliding assembly used for enabling the small mechanical arm 2 to slide is arranged in the big mechanical arm 1, two symmetrical positioning assemblies used for positioning the small mechanical arm 2 are arranged in the big mechanical arm 1, and the same rotating shaft 11 transversely penetrates through the big mechanical arm 1 and the small mechanical arm 2.

Example two

The embodiment is improved on the basis of the first embodiment: the limiting assembly comprises a first sliding chute 4 arranged in the large mechanical arm 1, a sliding plate 5 is connected in the first sliding chute 4 in a sliding manner, one end of a rotating shaft 11 penetrates through the sliding plate 5, a first threaded rod 7 is connected on the inner wall of one side, far away from the small mechanical arm 2, of the first sliding chute 4 in a rotating manner, one end of the first threaded rod 7, close to the small mechanical arm 2, penetrates through the sliding plate 5 in a threaded manner, the other end of the first threaded rod 7 extends to one side of the large mechanical arm 1, two symmetrical rotating shafts 9 are fixedly connected on one side, close to the small mechanical arm 2, of the sliding plate 5, a roller 10 extending into the groove 8 is sleeved on the outer wall of the rotating shaft 9 in a rotating manner, the roller 10 is in rolling fit with the groove 8, the sliding assembly comprises a second sliding chute 13 arranged in the large mechanical arm 1, a sliding block 15 is connected in the second sliding chute 13 in a sliding manner, a U-shaped block 16 is fixedly connected on one side, close to the small mechanical arm 2, of the second sliding chute 13, and connected with a second threaded rod 14 in a rotating manner, a second threaded rod 14 penetrates through a sliding block 15 close to one end of the small mechanical arm 2 in a threaded manner, a worm 20 is connected in the second sliding chute 13 in a transverse rotating manner, one end of the worm 20 extends to one side of the large mechanical arm 1, a worm wheel 19 meshed with the worm 20 is fixedly sleeved on the outer wall of the second threaded rod 14, a gear 17 meshed with the rack 12 is rotatably connected in the U-shaped block 16 through a rotating rod, a small motor 18 is fixedly connected to one side of the U-shaped block 16, an output shaft of the small motor 18 is fixedly connected with the rotating rod, the sliding plate 5 and the sliding block 15 can slide towards the small mechanical arm 2 by rotating the first threaded rod 7 and the worm 20, the small mechanical arm 2 can be clamped, the large mechanical arm 1 and the small mechanical arm 2 can be conveniently installed in the later period, the small motor 18 is started to drive the gear 17 to rotate, and the small mechanical arm 2 can be driven to slide through the rack 12 along with the rotation of the gear 17, the mechanical big arm 1 and the mechanical small arm 2 can be installed without manually moving the mechanical small arm 2, the positioning component comprises a connecting block 21 fixedly connected with one end of the mechanical big arm 1 through a bolt, a pin 22 penetrates through the connecting block 21 in a sliding manner, a positioning hole 25 matched with the pin 22 is arranged in the mechanical small arm 2, a tension spring 23 is sleeved on the outer wall of the pin 22, one end, far away from the mechanical small arm 2, of the pin 22 is fixedly connected with a circular plate 24, two ends of the tension spring 23 are fixedly connected with one side, close to the circular plate 24 and the connecting block 21, respectively, two symmetrical bases 26 are fixedly connected with the top ends of the mechanical big arm 1 and the mechanical small arm 2, the connecting block 21 is fixed on one side of the mechanical big arm 1 through a bolt, when the pin 22 is aligned with the positioning hole 25, the pin 22 extends into the positioning hole 25 under the tension of the tension spring 23 to position the mechanical small arm 2, and after the installation is finished, can dismantle connecting block 21 from mechanical big arm 1 for the installation of big forearm in addition, the one side that two bases 26 that are located mechanical big arm 1 top are close to each other is passed through the axle and is rotated with pneumatic cylinder 3 and be connected, the one side that two bases 26 that are located mechanical small arm 2 top are close to each other is passed through the axle and is rotated with the other end of pneumatic cylinder 3 and be connected, the fixed cover of outer wall of gyro wheel 10 is equipped with the rubber layer, can increase the frictional force between gyro wheel 10 and the recess 8 through the rubber layer, one side that U type piece 16 is close to mechanical small arm 2 is equipped with a plurality of pulleys 27, and pulley 27 all touches with mechanical small arm 2, can play certain spacing to mechanical small arm 2 through pulley 27, prevent that excessive meshing from appearing in the in-process gear 17 and the rack 12 of U type piece 16 at the removal.

EXAMPLE III

The embodiment is improved on the basis of the first embodiment: one side inner wall fixedly connected with slide bar 6 that mechanical forearm 2 was kept away from to first spout 4, and slide bar 6's the other end slides and runs through slide 5, can avoid slide 5 to appear rocking at slide 5 gliding in-process through slide bar 6.

The working principle is as follows: fixing a connecting block 21 on one side of a large mechanical arm 1 through a bolt, pulling a pin 22 outwards through a circular plate 24, stretching a tension spring 23, moving a small mechanical arm 2 into the large mechanical arm 1, rotating a first threaded rod 7, connecting the first threaded rod 7 with a sliding plate 5 through threads, driving a rotating shaft 9 and a roller 10 to slide towards the middle along with the rotation of the first threaded rod 7 and driving the roller 10 to just extend into a groove 8, preliminarily limiting the small mechanical arm 2, then rotating a worm 20, meshing the worm 20 with a worm wheel 19, driving a second threaded rod 14 to rotate through the worm wheel 19, connecting the second threaded rod 14 with a sliding block 15 through threads, driving a U-shaped block 16 to slide towards the small mechanical arm 2 along with the rotation of the second threaded rod 14 by the sliding block 15, starting meshing the gear 17 with a rack 12, touching the sliding wheel 27 with the small mechanical arm 2, continuing to move along with the sliding block 15, the sliding wheel 27 can push the small mechanical arm 2 to move outwards for a short distance, then the inner wall of the groove 8 is tightly attached to the roller 10, then the small mechanical arm 2 can be clamped through the roller 10 and the sliding wheel 27, then the small motor 18 is started, the small motor 18 drives the gear 17 to rotate, the gear 17 drives the small mechanical arm 2 to slide downwards through the rack 12, when the pin 22 is aligned with the positioning hole 25, the pin 22 extends into the positioning hole 25 under the tensile force of the tension spring 23 to position the small mechanical arm 2, at the moment, the rotating shaft 11 is inserted into the large mechanical arm 1, the other end of the rotating shaft 11 can penetrate through the small mechanical arm 2, then the large mechanical arm 1 and the small mechanical arm 2 can be assembled, then the first threaded rod 7 and the worm 20 are rotated reversely, the first threaded rod 7 and the worm 20 drive the sliding plate 5 and the sliding block 15 to slide towards the direction far away from the small mechanical arm 2, and the fixing of the small mechanical arm 2 is released, and then the connecting block 21 and the large mechanical arm 1 are detached through a bolt, the pin 22 is separated from the positioning hole 25, and the installation of the large mechanical arm 1 and the small mechanical arm 2 is completed, so that the installation is simple and convenient.

However, the working principle and wiring method of the small motor 18, which are well known to those skilled in the art, belong to the conventional means or common knowledge in the field, and are not described herein, and those skilled in the art can make any selection according to their needs or convenience.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The auxiliary positioning device for replacing the big arm and the small arm of the excavator comprises a big mechanical arm (1) and a small mechanical arm (2) arranged in the big mechanical arm (1), and is characterized in that the top of the big mechanical arm (1) is rotatably connected with a hydraulic cylinder (3), the other end of the hydraulic cylinder (3) is rotatably connected with the top of the small mechanical arm (2), one sides of the small mechanical arms (2) far away from each other are respectively provided with a groove (8), two symmetrical limiting assemblies used for limiting the small mechanical arm (2) are arranged in the big mechanical arm (1), one side of the small mechanical arm (2) close to the big mechanical arm (1) is fixedly connected with a rack (12), a sliding assembly used for enabling the small mechanical arm (2) to slide is arranged in the big mechanical arm (1), two symmetrical positioning assemblies used for positioning the small mechanical arm (2) are arranged in the big mechanical arm (1), the same rotating shaft (11) transversely penetrates through the large mechanical arm (1) and the small mechanical arm (2).

2. The auxiliary positioning device for replacing the big arm and the small arm of the excavator according to claim 1, wherein the limiting component comprises a first sliding chute (4) arranged in the big mechanical arm (1), a sliding plate (5) is connected in the first sliding chute (4) in a sliding manner, one end of a rotating shaft (11) penetrates through the sliding plate (5), a first threaded rod (7) is connected to the inner wall of one side, far away from the small mechanical arm (2), of the first sliding chute (4) in a rotating manner, one end of the first threaded rod (7) close to the small mechanical arm (2) penetrates through the sliding plate (5), the other end of the first threaded rod (7) extends to one side of the big mechanical arm (1), two symmetrical rotating shafts (9) are fixedly connected to one side, close to the small mechanical arm (2), of the sliding plate (5), and a roller (10) extending into the groove (8) is sleeved on the outer wall of the rotating shafts (9), and the roller (10) is matched with the groove (8) in a rolling way.

3. The auxiliary positioning device for replacing the big arm and the small arm of the excavator as claimed in claim 1, wherein the sliding assembly comprises a second sliding chute (13) arranged in the big mechanical arm (1), a sliding block (15) is connected in the second sliding chute (13) in a sliding manner, a U-shaped block (16) is fixedly connected to one side of the sliding block (15) close to the small mechanical arm (2), a second threaded rod (14) is connected to the inner wall of one side, far away from the small mechanical arm (2), of the second sliding chute (13) in a rotating manner, a threaded hole at one end, close to the small mechanical arm (2), of the second threaded rod (14) penetrates through the sliding block (15), a worm (20) is connected in the second sliding chute (13) in a transverse rotating manner, one end of the worm (20) extends to one side of the big mechanical arm (1), a worm wheel (19) meshed with the worm (20) is fixedly sleeved on the outer wall of the second threaded rod (14), the utility model discloses a gear rack for the automobile engine, including U type piece (16), be connected with through the dwang rotation in the U type piece (16) with rack (12) engaged with gear (17), one side fixedly connected with small motor (18) of U type piece (16), and the output shaft and the dwang fixed connection of small motor (18).

4. The utility model discloses an excavator big or small arm is changed and is used auxiliary positioning device, characterized in that, locating component includes connecting block (21) through bolt fixed connection in big arm of machinery (1) one end, it has round pin (22) to slide through in connecting block (21), be equipped with in little arm of machinery (2) with round pin (22) matched with locating hole (25), the outer wall cover of round pin (22) is equipped with extension spring (23), the one end fixedly connected with plectane (24) of little arm of machinery (2) are kept away from in round pin (22), and the both ends of extension spring (23) respectively with plectane (24) and connecting block (21) one side fixed connection that is close to each other.

5. The auxiliary positioning device for replacing the big arm and the small arm of the excavator as claimed in claim 1, wherein the top ends of the big mechanical arm (1) and the small mechanical arm (2) are fixedly connected with two symmetrical bases (26), one side, close to each other, of each base (26) on the top of the big mechanical arm (1) is rotatably connected with the hydraulic cylinder (3) through a shaft, and one side, close to each other, of each base (26) on the top of the small mechanical arm (2) is rotatably connected with the other end of the hydraulic cylinder (3) through a shaft.

6. The auxiliary positioning device for replacing the big arm and the small arm of the excavator as claimed in claim 2, wherein a rubber layer is fixedly sleeved on the outer wall of the roller (10).

7. The auxiliary positioning device for replacing the big arm and the small arm of the excavator as claimed in claim 3, wherein a plurality of sliding wheels (27) are arranged on one side of the U-shaped block (16) close to the mechanical arm (2), and the sliding wheels (27) are all contacted with the mechanical arm (2).

8. The auxiliary positioning device for replacing the big arm and the small arm of the excavator as claimed in claim 2, wherein a sliding rod (6) is fixedly connected to the inner wall of one side of the first sliding chute (4) far away from the mechanical arm (2), and the other end of the sliding rod (6) penetrates through the sliding plate (5) in a sliding manner.