CN107165207B

CN107165207B - Excavator capable of swinging based on bucket

Info

Publication number: CN107165207B
Application number: CN201710569631.9A
Authority: CN
Inventors: 张蓉
Original assignee: Zhu Shaochi
Current assignee: Guangxi Jiuhui Construction Machinery Co.,Ltd.
Priority date: 2017-07-13
Filing date: 2017-07-13
Publication date: 2020-11-17
Anticipated expiration: 2037-07-13
Also published as: CN107165207A

Abstract

The invention belongs to the technical field of excavators, and particularly relates to an excavator capable of swinging based on an excavator bucket, which comprises the excavator bucket and an excavator body, wherein when a swinging arm is subjected to resistance of stones in the anticlockwise direction in the process of excavating soil, a seventh gear is meshed with a first gear; the swing arm swings along the first gear axis in the anticlockwise direction; when the swing arm is subjected to rock resistance in a clockwise direction during excavation; since the resistance force of the swing arm is smaller than the pulling force of the spiral spring and larger than the compression force of the first spring at the beginning, the swing arm moves upwards along the moving groove at the moment; engaging the seventh gear with the third gear; in the process, the resistance of the spiral spring to the sixth rotating shaft is greater than the resistance of the swing arm, so that the swing arm cannot swing; but the resistance of the swing arm is increased continuously during the excavation process; when the resistance of the spiral spring to the sixth rotating shaft is smaller than the resistance of the swing arm; the swing arm will swing in a clockwise direction along the third gear axis.

Description

Excavator capable of swinging based on bucket

Technical Field

The invention belongs to the technical field of excavators, and particularly relates to an excavator capable of swinging based on an excavator bucket.

Background

When the excavator used at present encounters stones or other hard substances in the working process; if the excavator cannot be found in time, the front sharp part of the bucket can be damaged when the excavator excavates soil all the time; the service life of the excavator is reduced; meanwhile, the excavator digs the soil in the process of digging the soil; when the excavator touches a stone, the excavator needs to consume larger energy to achieve the effect of excavating; the cost of using the excavator is increased; therefore, it is necessary to design a digging machine which can prolong the service life of the digging machine and reduce the use cost of the digging machine.

The invention designs a excavator capable of swinging based on an excavator bucket, and solves the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a excavator capable of swinging based on an excavator bucket, which is realized by adopting the following technical scheme.

The utility model provides a can wobbling excavator based on bucket which characterized in that: the excavator comprises an excavator bucket and an excavator body, wherein the excavator bucket is installed on the excavator body.

The bucket comprises a swing arm, a fixing plate, an arc-shaped cavity, a driving mechanism, a trapezoidal block and a circular notch; the transmission mechanism is characterized in that the fixed plate consists of two first arc-shaped plates and a second arc-shaped plate; the two first arc-shaped plates are symmetrically arranged on two sides of the second arc-shaped plate; one end of the second arc-shaped plate is flush with one end of the first arc-shaped plate corresponding to the first arc-shaped plate; the other end of the second arc-shaped plate is positioned in the middle of the first arc-shaped plate in the arc direction; an arc-shaped cavity is formed in the end face, located on one side of the middle position of the first arc-shaped plate, of the second arc-shaped plate; the driving mechanism is arranged on the inner side of the arc-shaped cavity; one end of each of the four swing arms is provided with a trapezoidal block; a round gap is arranged on each of the four trapezoidal blocks; the four swing arms are uniformly arranged between the two first arc-shaped plates and matched with the second arc-shaped plates, and the four swing arms are matched with the two first arc-shaped plates; the four transmission mechanisms are respectively arranged at the inner sides of the four swing arms.

The driving mechanism comprises a first rotating shaft, a first support, a second rotating shaft, a first gear, a second gear, a third rotating shaft, a second support, a fourth gear, a hydraulic motor, a fourth rotating shaft, a fifth gear and a sixth gear, wherein the hydraulic motor is arranged at one end of the arc-shaped cavity; the third rotating shaft is arranged on the rotating shaft of the hydraulic motor; the four second gears are uniformly arranged on the third rotating shaft; the two fourth rotating shafts are respectively installed in the arc-shaped cavity through two second supports and located in the middle of the arc-shaped cavity; two sides of the two fourth rotating shafts positioned in the middle of the arc-shaped cavity are respectively provided with a fourth rotating shaft; one opposite ends of the two fourth rotating shafts positioned at the two sides of the middle position are respectively arranged in the arc-shaped cavity through a second support, and the other ends are respectively arranged on the corresponding arc-shaped cavity walls; the four fourth gears are respectively arranged on the four fourth rotating shafts; the four fourth gears are respectively meshed with the four second gears; the two first rotating shafts are respectively installed in the arc-shaped cavity through two first supports and located in the middle of the arc-shaped cavity; two sides of the two first rotating shafts positioned in the middle of the arc-shaped cavity are respectively provided with a first rotating shaft; the opposite ends of the two first rotating shafts positioned at the two sides of the two first rotating shafts at the middle position are respectively arranged in the arc-shaped cavity through a first support, and the other ends are respectively arranged on the corresponding arc-shaped cavity walls; the four second rotating shafts are uniformly arranged in the arc-shaped cavity, and the two second rotating shafts positioned in the middle are respectively arranged in the arc-shaped cavity through two first supports; one ends of the two second rotating shafts, which are positioned at two sides and are opposite to each other, are respectively arranged in the arc-shaped cavity through a first support; the other ends of the two second rotating shafts positioned at the two sides are respectively arranged on the corresponding arc-shaped cavity walls; the four sixth gears are respectively arranged on the four first rotating shafts and are respectively meshed with the four fourth gears; the four first gears are respectively arranged on the four first rotating shafts; the four fifth gears are respectively arranged on the four first rotating shafts; and the fifth gear on the same first rotating shaft is positioned between the first gear and the sixth gear; the four third gears are respectively arranged on the four second rotating shafts, and the four third gears are respectively meshed with the four fifth gears.

The transmission mechanism comprises a seventh gear, a guide rail, a first connecting plate, a second connecting plate, an eighth gear third support, a ninth gear, a fifth rotating shaft, a sixth rotating shaft, a fourth support, a volute spring, a tenth gear, a fifth support, a seventh rotating shaft, an eighth rotating shaft, a sixth support, an eleventh gear, a ninth rotating shaft, a seventh support, a twelfth gear, a first spring, a moving block, a moving groove, a guide groove, a tenth rotating shaft, an eleventh rotating shaft, a roller, a twelfth rotating shaft, a thirteenth gear, an eighth support, a ninth support, a tenth support, a thirteenth rotating shaft and a fourteenth gear, wherein the guide rail is arranged in the arc-shaped groove; a moving groove is formed on one side surface of the guide rail; two guide grooves are symmetrically arranged on two sides of the moving groove; two symmetrical guide blocks are arranged on two sides of the moving block; the moving block is arranged in the moving groove through the matching of the two guide blocks and the two guide grooves; a first spring is arranged between the moving block and the moving groove; the first connecting plate is arranged at the upper end of the inner side of the swing arm through a second connecting plate; the sixth rotating shaft is arranged on the lower side of the first connecting plate through a fourth support; one end of the sixth rotating shaft is arranged in a circular hole in the moving block; a volute spiral spring is arranged between the sixth rotating shaft and the moving block; the inner end of the volute spiral spring is arranged on the sixth rotating shaft; the outer end of the scroll spring is arranged on the moving block; the seventh gear is arranged on the sixth rotating shaft; the twelfth gear is arranged on the sixth rotating shaft; the seventh rotating shaft is provided with the lower end of the first connecting plate through a fifth support; the tenth gear is arranged at one end of the seventh rotating shaft and is meshed with the twelfth gear; the eighth rotating shaft is arranged at the lower end of the first connecting plate through a seventh support; one end of the eighth rotating shaft is connected with the other end of the seventh rotating shaft in a matching way through bevel teeth; the eighth gear is arranged at the other end of the eighth rotating shaft; the ninth rotating shaft is arranged on the inner side of the swinging arm through a sixth support; one end of the ninth rotating shaft is connected with the other end of the sixth rotating shaft in a matching way through bevel teeth; the eleventh gear is arranged at the other end of the ninth rotating shaft; the fifth rotating shaft is arranged on the inner side of the swinging arm through a third support; a ninth gear is mounted at one end of the fifth rotating shaft and is respectively meshed with the eleventh gear and the eighth gear; the tenth rotating shaft is arranged on the inner side of the swinging arm through a tenth support; one end of the tenth rotating shaft is connected with the other end of the fifth rotating shaft in a matching way through bevel teeth; the eleventh rotating shaft is arranged on the inner side of the swinging arm through a ninth support; one end of the eleventh rotating shaft is connected with the other end of the tenth rotating shaft in a matching way through bevel teeth; the thirteenth rotating shaft is arranged on the inner side of the swing arm through an eighth support; the fourteenth gear is arranged at one end of the thirteenth rotating shaft; the other end of the thirteenth rotating shaft is connected with the other end of the eleventh rotating shaft in a matched mode through bevel teeth; the twelfth rotating shaft is arranged at two ends of the round gap on the trapezoidal block; the thirteenth gear is arranged on the twelfth rotating shaft and is positioned in the middle; the thirteenth gear is meshed with the fourteenth gear; the two rollers are respectively arranged at two ends of the twelfth rotating shaft.

The seventh gear is engaged with the first gear and the third gear, respectively.

As a further improvement of the present technology, the hydraulic motor includes a fourteenth rotating shaft, an eighteenth rotating shaft, a rotating housing, a differential support, a differential, a first motor rotating shaft, a first motor gear, a first motor support, a second motor gear, a one-way ring, a third motor gear, a fourth motor gear, a second motor rotating shaft, a fifth motor gear, a sixth motor gear, a seventh motor gear, a third motor rotating shaft, a fixed shaft, a rotating housing, a fourth motor rotating shaft, an eighth motor rotating shaft, a sliding chute, a slider, a motor housing, a driving housing, an arc-shaped slider, a square slider, and a spiral sliding chute, wherein the differential is supported and mounted inside the motor housing through the differential; a spiral chute is arranged on the outer circular surface of the driving shell; one end of the driving shell is provided with a fixed shaft; the driving shell and the first motor are supported and arranged on the inner circular surface of the motor shell through a fixed shaft; the inner circle surface of the rotating shell is provided with a chute; the rotating shell is arranged on the outer circular surface of the driving shell; two sides of the rotating shell are respectively provided with a hydraulic hole; the sliding block consists of an arc sliding block and a square sliding block; the sliding block is arranged at the joint of the spiral chute and the chute, and the arc-shaped sliding block part on the sliding block is arranged in the spiral chute; the square sliding block part on the sliding block is arranged in the sliding groove; a second motor gear and a second motor rotating shaft are respectively arranged at two ends of the outer side of the rotating shell; a ninth motor gear is arranged at one end of the second motor rotating shaft; one end of the ninth motor gear is provided with a one-way ring; one end of a fourth motor rotating shaft is arranged on the end surface of one side in the motor shell; the other end of the fourth motor rotating shaft is connected with a one-way ring arranged on the ninth motor gear; the third motor gear is arranged on the fourth motor rotating shaft; one end of the rotating shaft of the third motor is arranged on the fixed shaft; the first motor gear is arranged at one end of the rotating shaft of the third motor; the seventh motor gear is arranged at the other end of the third motor rotating shaft; one end of the seventh motor gear is arranged on the one-way ring; one end of the first motor rotating shaft is connected with the differential mechanism; the other end is connected with a one-way ring on a seventh motor gear; the eighth motor rotating shaft is supported and arranged on the inner circular surface of the motor shell through the first motor; the fifth motor gear and the sixth motor gear are respectively arranged at two ends of the eighth motor rotating shaft; the fifth motor gear is meshed with the second motor gear; the sixth motor gear is meshed with the first motor gear; one end of the eighteenth rotating shaft is arranged on the end surface of one side in the motor shell; the other end of the eighteenth rotating shaft is connected with a differential mechanism; the fourth motor gear is arranged on the eighteenth rotating shaft; the fourth motor gear is meshed with the third motor gear; the rotating shaft of the hydraulic motor is connected with the differential mechanism; two hydraulic holes on two sides of the rotating shell are respectively connected with a hydraulic device on the machine body.

As a further improvement of the present technology, as an alternative to four swing arms, four transmission mechanisms, four first rotating shafts, four second rotating shafts, four first gears, four third gears, four fourth rotating shafts, four fifth gears, and four sixth gears, the number of the swing arms, the transmission mechanisms, the first rotating shafts, the second rotating shafts, the first gears, the third gears, the fourth rotating shafts, the fifth gears, and the sixth gears is 5, 6, or 7. The number is selected according to the strength of the ground to be excavated, and a large number means that the bucket is easy to enter the ground, but the bucket is weak.

As a further improvement of the technology, the diameter of the third gear is 1-3 times of the diameter of the fifth gear.

As a further improvement of the present technology, the power source of the hydraulic motor described above comes to the body.

As a further improvement of the present technology, the sixth rotating shaft and the ninth rotating shaft are in one-way transmission, and the transmission direction is that the sixth rotating shaft drives the ninth rotating shaft to rotate; the twelfth gear and the tenth gear are in one-way transmission, and the twelfth gear drives the tenth gear to rotate in the transmission direction; the eighth gear and the ninth gear are in one-way transmission, and the eighth gear drives the ninth gear to rotate in the transmission direction; one-way transmission is formed between the eleventh gear and the ninth gear, and the transmission direction is that the eleventh gear drives the ninth gear to rotate.

Compared with the traditional excavator technology, when the excavator capable of swinging on the basis of the excavator bucket works, if stones are encountered, the encountered stones can be avoided through the rotation of the front-end roller of the excavator bucket and the swinging of the swinging arm; so that the excavator becomes easy in the working process.

The third rotating shaft is arranged on the rotating shaft of the hydraulic motor; the four second gears are uniformly arranged on the third rotating shaft; the four fourth rotating shafts are uniformly arranged in the arc-shaped cavity; the four fourth gears are respectively arranged on the four fourth rotating shafts; the four fourth gears are respectively meshed with the four second gears; the four first rotating shafts are uniformly arranged in the arc-shaped cavity; the four second rotating shafts are uniformly arranged in the arc-shaped cavity; the four sixth gears are respectively arranged on the four first rotating shafts and are respectively meshed with the four fourth gears; the four first gears are respectively arranged on the four first rotating shafts; the four fifth gears are respectively arranged on the four first rotating shafts; and the fifth gear on the same first rotating shaft is positioned between the first gear and the sixth gear; the four third gears are respectively arranged on the four second rotating shafts and are respectively meshed with the four fifth gears; when the hydraulic motor works, the hydraulic motor can drive the third rotating shaft to rotate; the third rotating shaft rotates to drive the four second gears to rotate; the four second gears rotate to respectively drive the four fourth gears to rotate; the four fourth gears rotate to respectively drive the four sixth gears to rotate; the four sixth gears rotate to respectively drive the four first rotating shafts to rotate; the four first rotating shafts rotate to respectively drive the four first gears and the four fifth gears to rotate; the four fifth gears rotate to respectively drive the four third gears to rotate.

The guide rail is arranged in the arc-shaped groove; a moving groove is formed on one side surface of the guide rail; the moving block is arranged in the moving groove through the matching of the two guide blocks and the two guide grooves; a first spring is arranged between the moving block and the moving groove; one end of the sixth rotating shaft is arranged in a circular hole in the moving block; a volute spiral spring is arranged between the sixth rotating shaft and the moving block; the seventh gear is arranged on the sixth rotating shaft; the twelfth gear is arranged on the sixth rotating shaft; the tenth gear is arranged at one end of the seventh rotating shaft and is meshed with the twelfth gear; one end of the eighth rotating shaft is connected with the other end of the seventh rotating shaft in a matching way through bevel teeth; the eighth gear is arranged at the other end of the eighth rotating shaft; one end of the ninth rotating shaft is connected with the other end of the sixth rotating shaft in a matching way through bevel teeth; the eleventh gear is arranged at the other end of the ninth rotating shaft; a ninth gear is mounted at one end of the fifth rotating shaft and is respectively meshed with the eleventh gear and the eighth gear; one end of the tenth rotating shaft is connected with the other end of the fifth rotating shaft in a matching way through bevel teeth; one end of the eleventh rotating shaft is connected with the other end of the tenth rotating shaft in a matching way through bevel teeth; the fourteenth gear is arranged at one end of the thirteenth rotating shaft; the other end of the thirteenth rotating shaft is connected with the other end of the eleventh rotating shaft in a matched mode through bevel teeth; the twelfth rotating shaft is arranged at two ends of the round gap on the trapezoidal block; the thirteenth gear is arranged on the twelfth rotating shaft and is positioned in the middle; the thirteenth gear is meshed with the fourteenth gear; the two rollers are respectively arranged at two ends of the twelfth rotating shaft; the seventh gear is respectively matched with the first gear and the third gear; when the seventh gear is engaged with the first gear; the seventh gear is driven to rotate by the rotation of the first gear; the seventh gear rotates to drive the sixth rotating shaft to rotate; the sixth rotating shaft rotates to drive the twelfth gear to rotate; the twelfth gear rotates to drive the tenth gear to rotate; the tenth gear rotates to drive the seventh rotating shaft to rotate; the seventh rotating shaft rotates to drive the eighth rotating shaft to rotate; the eighth rotating shaft rotates to drive the eighth gear to rotate; the eighth gear rotates to drive the ninth gear to rotate; when the seventh gear is engaged with the third gear; the third gear rotates to drive the seventh gear to rotate; the seventh gear rotates to drive the sixth rotating shaft to rotate; the sixth rotating shaft rotates to drive the ninth rotating shaft to rotate; the ninth rotating shaft rotates to drive the eleventh gear to rotate; the eleventh gear rotates to drive the ninth gear to rotate; the sixth rotating shaft and the ninth rotating shaft are in one-way transmission, and the sixth rotating shaft drives the ninth rotating shaft to rotate in the transmission direction; the twelfth gear and the tenth gear are in one-way transmission, and the twelfth gear drives the tenth gear to rotate in the transmission direction; the eighth gear and the ninth gear are in one-way transmission, and the eighth gear drives the ninth gear to rotate in the transmission direction; one-way transmission is formed between the eleventh gear and the ninth gear, and the transmission direction is that the eleventh gear drives the ninth gear to rotate. When the sixth rotating shaft drives the ninth rotating shaft to rotate, interference on transmission of the twelfth gear and the tenth gear is avoided; when the twelfth gear drives the tenth gear to rotate, interference on transmission between the sixth rotating shaft and the ninth rotating shaft is avoided; in the invention, the third gear and the first gear rotate in opposite directions; therefore, the invention enables the rotation direction of the ninth gear to be consistent through the transmission of the twelfth gear, the tenth gear, the seventh rotating shaft, the eighth gear and the ninth gear and the transmission of the ninth rotating shaft, the eleventh gear and the ninth gear; when the ninth gear rotates, the fifth rotating shaft is driven to rotate; the fifth rotating shaft rotates to drive the tenth rotating shaft to rotate; the tenth rotating shaft rotates to drive the eleventh rotating shaft to rotate; the eleventh rotating shaft rotates to drive the thirteenth rotating shaft to rotate; the thirteenth rotating shaft rotates to drive the fourteenth gear to rotate; the fourteenth gear rotates to drive the thirteenth gear to rotate; the thirteenth gear rotates to drive the two rollers to rotate; when the swing arm is subjected to resistance of soil in the counterclockwise direction during the excavation process, the resistance is small due to the beginning; the resistance of the spiral spring to the sixth rotating shaft is greater than the resistance of the swinging arm, so that the swinging arm cannot swing; but the resistance of the swing arm is increased continuously during the excavation process; the sixth rotating shaft is arranged on the inner side of the swing arm; when the resistance of the spiral spring to the sixth rotating shaft is smaller than the resistance of soil to the swing arm; the swing arm swings along the first gear axis in a counterclockwise direction; when the swing arm is subjected to resistance by soil in a clockwise direction during excavation; because the resistance is small at the beginning, the resistance of the swing arm is smaller than the tensile force of the volute spiral spring but larger than the compression force of the first spring, and at the moment, the swing arm moves upwards along the moving groove; engaging the seventh gear with the third gear; in the process, the resistance of the spiral spring to the sixth rotating shaft is greater than the resistance of the swing arm, so that the swing arm cannot swing; but the resistance of the swing arm is increased continuously during the excavation process; the sixth rotating shaft is arranged on the inner side of the swing arm; when the resistance of the spiral spring to the sixth rotating shaft is smaller than the resistance of the swing arm; the swing arm swings clockwise along the third gear axis; when the excavation is finished; by controlling the hydraulic motor to rotate reversely; so that the swing arm in the counterclockwise direction and the swing arm in the clockwise direction are restored to the original positions. The diameter of the third gear designed by the invention can be 2-3 times of the diameter of the fifth gear. The speed of rotation of the roller is higher when the swing arm swings in the anticlockwise direction than when the swing arm swings in the clockwise direction through the speed change of the fifth gear; the function of the swing arm mechanism is to enable most of the four swing arms to tend to swing clockwise by adjusting the rotating speed of the roller when the roller is in contact with a stone; therefore, the excavator bucket can wrap more soil in the process of excavating soil; so that the excavator has higher soil digging efficiency.

The outer circular surface of the driving shell is provided with a spiral chute; the driving shell and the first motor are supported and arranged on the inner circular surface of the motor shell through a fixed shaft; the inner circle surface of the rotating shell is provided with a chute; the rotating shell is arranged on the outer circular surface of the driving shell; the sliding block is arranged at the joint of the spiral chute and the chute, and a second motor gear and a second motor rotating shaft are respectively arranged at two ends of the outer side of the rotating shell; a ninth motor gear is arranged at one end of the second motor rotating shaft; one end of the ninth motor gear is provided with a one-way ring; one end of the fourth motor rotating shaft is connected with a one-way ring arranged on the ninth motor gear; the third motor gear is arranged on the fourth motor rotating shaft; the first motor gear is arranged at one end of the rotating shaft of the third motor; the seventh motor gear is arranged at the other end of the third motor rotating shaft; one end of the seventh motor gear is arranged on the one-way ring; one end of the first motor rotating shaft is connected with the differential mechanism; the other end is connected with a one-way ring on a seventh motor gear; the fifth motor gear and the sixth motor gear are respectively arranged at two ends of the eighth motor rotating shaft; the fifth motor gear is meshed with the second motor gear; the sixth motor gear is meshed with the first motor gear; one end of the eighteenth rotating shaft is connected with the differential mechanism; the fourth motor gear is arranged on the eighteenth rotating shaft; the fourth motor gear is meshed with the third motor gear; the rotating shaft of the hydraulic motor is connected with the differential mechanism; two hydraulic holes on two sides of the rotating shell are respectively connected with a hydraulic device on the machine body; when a hydraulic device on the machine body drives liquid in the spiral chute on the driving shell to flow, the liquid can push the sliding block to move; the driving shell is fixed on the inner circular surface of the hydraulic motor shell; the slider movement causes the rotating case to rotate; when the rotating shell rotates anticlockwise, the rotating shell can drive the rotating shaft of the second motor to rotate; the rotating shaft of the second motor rotates to drive the gear of the ninth motor to rotate; the ninth motor gear rotates to drive the fourth motor rotating shaft to rotate; the rotation of the fourth motor rotating shaft drives the third motor gear to rotate and the fourth motor gear to rotate; the gear of the fourth motor rotates to drive the eighteenth rotating shaft to rotate; the eighteenth rotating shaft can drive the rotating shaft in the differential mechanism to rotate; when the rotating shell rotates clockwise, the rotating shell can drive the second motor gear to rotate; the second motor gear rotates to drive the fifth motor gear to rotate; the fifth motor gear rotates to drive the eighth motor rotating shaft to rotate; the eighth motor rotating shaft rotates to drive the sixth motor gear to rotate; the sixth motor gear rotates to drive the first motor gear to rotate; the first motor gear rotates to drive the third motor rotating shaft to rotate; the third motor rotating shaft rotates to drive the seventh motor gear to rotate; the seventh motor gear rotates to drive the first motor rotating shaft to rotate; the rotating shaft of the first motor can rotate to drive the rotating shaft in the differential mechanism to rotate; the rotation of a rotating shaft in the differential drives a rotating shaft of the hydraulic motor to rotate; a one-way ring is arranged between a seventh motor gear and a first motor rotating shaft; a one-way ring is arranged between the ninth motor gear and the fourth motor rotating shaft; the function of the motor is that the transmission of the one-way ring ensures that the rotating shell can not influence the fourth motor gear when rotating anticlockwise; the rotating shell can not influence the rotating shaft of the first motor when rotating clockwise.

When the excavator designed by the invention works, a power source is provided for the hydraulic motor through the excavator body; so that the hydraulic motor drives the third rotating shaft to rotate; the third rotating shaft rotates to drive the four second gears to rotate; the four second gears rotate to respectively drive the four fourth gears to rotate; the four fourth gears rotate to respectively drive the four sixth gears to rotate; the four sixth gears rotate to respectively drive the four first rotating shafts to rotate; the four first rotating shafts rotate to respectively drive the four first gears and the four fifth gears to rotate; the four fifth gears rotate to respectively drive the four third gears to rotate. When the swing arm is subjected to resistance of soil in the counterclockwise direction in the soil excavation process, the seventh gear is meshed with the first gear; the seventh gear is driven to rotate by the rotation of the first gear; the seventh gear rotates to drive the sixth rotating shaft to rotate; the sixth rotating shaft rotates to drive the twelfth gear to rotate; the twelfth gear rotates to drive the tenth gear to rotate; the tenth gear rotates to drive the seventh rotating shaft to rotate; the seventh rotating shaft rotates to drive the eighth rotating shaft to rotate; the eighth rotating shaft rotates to drive the eighth gear to rotate; the eighth gear rotates to drive the ninth gear to rotate; the ninth gear drives the fifth rotating shaft to rotate when rotating; the fifth rotating shaft rotates to drive the tenth rotating shaft to rotate; the tenth rotating shaft rotates to drive the eleventh rotating shaft to rotate; the eleventh rotating shaft rotates to drive the thirteenth rotating shaft to rotate; the thirteenth rotating shaft rotates to drive the fourteenth gear to rotate; the fourteenth gear rotates to drive the thirteenth gear to rotate; the thirteenth gear rotates to drive the two rollers to rotate; because the resistance is small at the beginning; the resistance of the spiral spring to the sixth rotating shaft is greater than the resistance of the swinging arm, so that the swinging arm cannot swing; but the resistance of the swing arm is increased continuously during the excavation process; the sixth rotating shaft is arranged on the inner side of the swing arm; when the resistance of the spiral spring to the sixth rotating shaft is smaller than the resistance of soil to the swing arm; the swing arm swings along the first gear axis in a counterclockwise direction; similarly, when the swing arm is subjected to the resistance of soil in the clockwise direction during the soil excavation process; because the resistance is small at the beginning, the resistance of the swing arm is smaller than the tensile force of the volute spiral spring but larger than the compression force of the first spring, and at the moment, the swing arm moves upwards along the moving groove; engaging the seventh gear with the third gear; at the moment, the third gear rotates to drive the seventh gear to rotate; the seventh gear rotates to drive the sixth rotating shaft to rotate; the sixth rotating shaft rotates to drive the ninth rotating shaft to rotate; the ninth rotating shaft rotates to drive the eleventh gear to rotate; the eleventh gear rotates to drive the ninth gear to rotate; the ninth gear drives the fifth rotating shaft to rotate when rotating; the fifth rotating shaft rotates to drive the tenth rotating shaft to rotate; the tenth rotating shaft rotates to drive the eleventh rotating shaft to rotate; the eleventh rotating shaft rotates to drive the thirteenth rotating shaft to rotate; the thirteenth rotating shaft rotates to drive the fourteenth gear to rotate; the fourteenth gear rotates to drive the thirteenth gear to rotate; the thirteenth gear rotates to drive the two rollers to rotate; in the process, the resistance of the spiral spring to the sixth rotating shaft is greater than the resistance of the swing arm, so that the swing arm cannot swing; but the resistance of the swing arm is increased continuously during the excavation process; the sixth rotating shaft is arranged on the inner side of the swing arm; when the resistance of the spiral spring to the sixth rotating shaft is smaller than the resistance of the swing arm; the swing arm swings clockwise along the third gear axis; when the excavation is finished; by controlling the hydraulic motor to rotate reversely; so that the swing arm in the counterclockwise direction and the swing arm in the clockwise direction are restored to the original positions.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is an external view of the bucket.

Fig. 3 is a schematic view of the fixing plate structure.

Fig. 4 is a schematic view of the drive mechanism installation.

Fig. 5 is a schematic view of the driving mechanism.

Fig. 6 is a schematic view of the internal mounting of the drive mechanism.

Fig. 7 is a schematic plan view of the driving mechanism.

Fig. 8 is a schematic view of the drive mechanism internal drive.

Fig. 9 is a schematic view of swing arm distribution.

Fig. 10 is a schematic view of the transmission installation.

Fig. 11 is a schematic view of the transmission mechanism.

Fig. 12 is a plan view of the transmission mechanism.

Fig. 13 is a seventh gear mounting schematic.

Fig. 14 is a schematic view of a rail structure.

Fig. 15 is a tenth shaft installation view.

Fig. 16 is a schematic view of a roller mounting.

Fig. 17 is a swing arm mounting schematic.

Fig. 18 is a schematic view of a trapezoidal block installation.

Fig. 19 is an external view of the hydraulic motor.

Fig. 20 is a schematic view of the internal structure of the hydraulic motor.

Fig. 21 is a plan view schematically illustrating the installation of the internal structure of the hydraulic motor.

Fig. 22 is a schematic view of the internal structure of the hydraulic motor.

Figure 23 is a schematic view of a unidirectional ring structure.

Fig. 24 is a drive housing mounting schematic.

FIG. 25 is a schematic view of a slider configuration.

Fig. 26 is a schematic view of a rotating case structure.

Fig. 27 is a schematic view of the structure of the driving case.

Number designation in the figures: 1. excavating a bucket; 2. a body; 3. a swing arm; 4. a fixing plate; 5. an arcuate cavity; 6. a drive mechanism; 7. a first rotating shaft; 8. a first support; 9. a second rotating shaft; 10. a first gear; 11. a second gear; 12. a third gear; 13. a third rotating shaft; 14. a second support; 15. a fourth gear; 16. a hydraulic motor; 17. a fourth rotating shaft; 18. a fifth gear; 19. a sixth gear; 20. a transmission mechanism; 23. a seventh gear; 24. a guide rail; 25. a first connecting plate; 26. a second connecting plate; 27. an eighth gear; 28. a third support; 29. a ninth gear; 30. a fifth rotating shaft; 31. a sixth rotating shaft; 32. a fourth support; 33. a volute spiral spring; 34. a tenth gear; 35. a fifth support; 36. a seventh rotating shaft; 37. an eighth rotating shaft; 38. a sixth support; 39. an eleventh gear; 40. a ninth rotating shaft; 41. a seventh support; 42. a twelfth gear; 43. a first spring; 44. a moving block; 45. a moving groove; 46. a guide groove; 47. a tenth rotating shaft; 48. an eleventh rotating shaft; 49. a roller; 50. a twelfth rotating shaft; 51. a thirteenth gear; 52. an eighth support; 53. a thirteenth rotating shaft; 54. a fourteenth gear; 55. a trapezoidal block; 56. a fourteenth rotation shaft; 57. an eighteenth rotating shaft; 59. rotating the shell; 60. differential supporting; 61. a differential mechanism; 63. a first motor shaft; 64. a first motor gear; 65. a first motor support; 66. a second motor gear; 67. a unidirectional ring; 68. a third motor gear; 69. a fourth motor gear; 70. a second motor shaft; 71. a fifth motor gear; 72. a sixth motor gear; 73. a seventh motor gear; 74. a third motor shaft; 75. a fixed shaft; 76. a fourth motor shaft; 77. an eighth motor shaft; 78. a chute; 79. a slider; 80. a motor housing; 81. a drive case; 82. an arc-shaped sliding block; 83. a square slider; 84. a spiral chute; 85. a first arc-shaped plate; 86. a guide block; 87. a ninth support; 88. a tenth support; 89. a circular notch; 90. rotating the shell; 91. a second arc-shaped plate; 92. a ninth motor gear.

Detailed Description

As shown in fig. 1, it comprises a bucket 1 and a body 2, wherein the bucket 1 is mounted on the body 2.

As shown in fig. 2, the bucket 1 comprises a swing arm 3, a fixed plate 4, an arc-shaped cavity 5, a driving mechanism 6, a trapezoidal block 55 and a circular notch 89; the transmission mechanism 20, as shown in fig. 3, wherein the fixing plate 4 is composed of two first arc-shaped plates 85 and one second arc-shaped plate 91; the two first arc-shaped plates 85 are symmetrically arranged at two sides of the second arc-shaped plate 91; one end of the second arc-shaped plate 91 is flush with the corresponding end of the first arc-shaped plate 85; the other end of the second arc-shaped plate 91 is positioned in the middle of the first arc-shaped plate 85 in the arc direction; an arc-shaped cavity 5 is formed in the end face, located on one side of the middle position of the first arc-shaped plate 85, of the second arc-shaped plate 91; as shown in fig. 4, the driving mechanism 6 is installed inside the arc chamber 5; one end of each of the four swing arms 3 is provided with a trapezoidal block 55; the four trapezoidal blocks 55 are provided with a round gap 89; as shown in fig. 9, four swing arms 3 are uniformly installed between the two first arc-shaped plates 85 and the four swing arms 3 are engaged with the second arc-shaped plate 91, and the four swing arms 3 are engaged with the two first arc-shaped plates 85; as shown in fig. 17, four transmission mechanisms 20 are respectively mounted on the inner sides of the four swing arms 3.

As shown in fig. 5, the driving mechanism 6 includes a first rotating shaft 7, a first support 8, a second rotating shaft 9, a first gear 10, a second gear 11, a third gear 12, a third rotating shaft 13, a second support 14, a fourth gear 15, a hydraulic motor 16, a fourth rotating shaft 17, a fifth gear 18, and a sixth gear 19, wherein as shown in fig. 4, the hydraulic motor 16 is installed at one end of the arc-shaped cavity 5; the third rotating shaft 13 is arranged on the rotating shaft of the hydraulic motor 16; as shown in fig. 6, four second gears 11 are uniformly mounted on the third rotating shaft 13; the two fourth rotating shafts 17 are respectively installed in the arc-shaped cavity 5 through the two second supports 14 and are located in the middle of the arc-shaped cavity 5; as shown in fig. 7, two fourth rotating shafts 17 are respectively arranged at two sides of the two fourth rotating shafts 17 positioned at the middle position of the arc-shaped cavity 5; opposite ends of the two fourth rotating shafts 17 at two sides of the two fourth rotating shafts 17 in the middle are respectively installed in the arc-shaped cavity 5 through a second support 14, and the other ends are respectively installed on the corresponding arc-shaped cavity 5 walls; as shown in fig. 8, four fourth gears 15 are respectively mounted on four fourth rotating shafts 17; the four fourth gears 15 are respectively meshed with the four second gears 11; the two first rotating shafts 7 are respectively installed in the arc-shaped cavity 5 through two first supports 8 and are positioned in the middle of the arc-shaped cavity 5; two sides of two first rotating shafts 7 positioned in the middle of the arc-shaped cavity 5 are respectively provided with one first rotating shaft 7; the opposite ends of the two first rotating shafts 7 positioned at the two sides of the two first rotating shafts 7 at the middle position are respectively arranged in the arc-shaped cavity 5 through a first support 8, and the other ends are respectively arranged on the corresponding arc-shaped cavity 5 walls; the four second rotating shafts 9 are uniformly arranged in the arc-shaped cavity 5, and the two second rotating shafts 9 positioned in the middle are respectively arranged in the arc-shaped cavity 5 through two first supports 8; the opposite ends of the two second rotating shafts 9 positioned at the two sides are respectively arranged in the arc-shaped cavity 5 through a first support 8; the other ends of the two second rotating shafts 9 positioned at the two sides are respectively arranged on the walls of the arc-shaped cavities 5 corresponding to the two second rotating shafts; four sixth gears 19 are respectively mounted on the four first rotating shafts 7, and the four sixth gears 19 are respectively meshed with the four fourth gears 15; as shown in fig. 7, four first gears 10 are respectively mounted on the four first rotating shafts 7; four fifth gears 18 are mounted on the four first rotation shafts 7, respectively; and a fifth gear 18, located on the same first shaft 7, is located between the first gear 10 and a sixth gear 19; as shown in fig. 8, four third gears 12 are respectively mounted on the four second rotating shafts 9, and the four third gears 12 are respectively engaged with four fifth gears 18.

As shown in fig. 10, the transmission mechanism 20 includes a seventh gear 23, a guide rail 24, a first connecting plate 25, a second connecting plate 26, an eighth gear 27, a third support 28, a ninth gear 29, a fifth rotating shaft 30, a sixth rotating shaft 31, a fourth support 32, a spiral spring 33, a tenth gear 34, a fifth support 35, a seventh rotating shaft 36, an eighth rotating shaft 37, a sixth support 38, an eleventh gear 39, a ninth rotating shaft 40, a seventh support 41, a twelfth gear 42, a first spring 43, a moving block 44, a moving groove 45, a guide groove 46, a tenth rotating shaft 47, an eleventh rotating shaft 48, a roller 49, a twelfth rotating shaft 50, a thirteenth gear 51, an eighth support 52, a ninth support 87, a tenth support 88, a thirteenth rotating shaft 53, and a fourteenth gear 54, wherein the guide rail 24 is installed in an arc-shaped groove; as shown in fig. 14, a moving groove 45 is formed on one side surface of the guide rail 24; two guide grooves 46 are symmetrically formed on two sides of the moving groove 45; two symmetrical guide blocks 86 are mounted on two sides of the moving block 44; the moving block 44 is arranged in the moving groove 45 through the matching of the two guide blocks 86 and the two guide grooves 46; a first spring 43 is arranged between the moving block 44 and the moving groove 45; as shown in fig. 11, a first link plate 25 is mounted on the inner upper end of the swing arm 3 via a second link plate 26; as shown in fig. 12, the sixth rotating shaft 31 is mounted on the lower side of the first connecting plate 25 through the fourth support 32; one end of the sixth rotating shaft 31 is installed in a circular hole of the moving block 44; a scroll spring 33 is installed between the sixth rotating shaft 31 and the moving block 44; the inner end of the spiral spring 33 is mounted on the sixth rotating shaft 31; as shown in fig. 14, the outer end of the scroll spring 33 is mounted on the moving block 44; the seventh gear 23 is mounted on the sixth rotating shaft 31; the twelfth gear 42 is mounted on the sixth rotating shaft 31; the seventh rotating shaft 36 is mounted to the lower end of the first connecting plate 25 through the fifth support 35; as shown in fig. 13, the tenth gear 34 is installed at one end of the seventh rotating shaft 36, and the tenth gear 34 is engaged with the twelfth gear 42; the eighth rotating shaft 37 is mounted at the lower end of the first connecting plate 25 through a seventh support 41; one end of the eighth rotating shaft 37 is connected with the other end of the seventh rotating shaft 36 through bevel gear in a matching manner; the eighth gear 27 is installed at the other end of the eighth rotating shaft 37; the ninth rotating shaft 40 is mounted inside the swing arm 3 through a sixth support 38; one end of the ninth rotating shaft 40 is connected with the other end of the sixth rotating shaft 31 in a matching way through bevel teeth; the eleventh gear 39 is installed at the other end of the ninth rotating shaft 40; the fifth rotating shaft 30 is mounted inside the swing arm 3 through the third support 28; a ninth gear 29 is mounted at one end of the fifth rotating shaft 30, and as shown in fig. 13, the ninth gear 29 is engaged with the eleventh gear 39 and the eighth gear 27, respectively; the tenth rotating shaft 47 is mounted inside the swing arm 3 through a tenth bearing 88; as shown in fig. 15, one end of the tenth rotating shaft 47 is connected with the other end of the fifth rotating shaft 30 by a bevel gear; the eleventh rotating shaft 48 is mounted inside the swing arm 3 through a ninth bearing 87; one end of the eleventh rotating shaft 48 is connected with the other end of the tenth rotating shaft 47 in a matching way through bevel teeth; the thirteenth rotating shaft 53 is mounted inside the swing arm 3 through the eighth bearing 52; a fourteenth gear 54 is installed at one end of the thirteenth rotating shaft 53; the other end of the thirteenth rotating shaft 53 is connected with the other end of the eleventh rotating shaft 48 in a matching manner through bevel teeth; as shown in fig. 17, the twelfth rotating shaft 50 is installed at both ends of the circular gap 89 of the trapezoidal block 55; the thirteenth gear 51 is installed on the twelfth rotating shaft 50 and located at the middle position; the thirteenth gear 51 meshes with the fourteenth gear 54; as shown in fig. 16, two rollers 49 are respectively installed at both ends of the twelfth rotating shaft 50.

As shown in fig. 11, the seventh gear 23 is engaged with the first gear 10 and the third gear 12, respectively.

As shown in fig. 19, the hydraulic motor 16 includes a fourteenth rotating shaft 56, an eighteenth rotating shaft 57, a rotating housing 90, a differential support 60, a differential 61, a first motor rotating shaft 63, a first motor gear 64, a first motor support 65, a second motor gear 66, a one-way ring 67, a third motor gear 68, a fourth motor gear 69, a second motor rotating shaft 70, a fifth motor gear 71, a sixth motor gear 72, a seventh motor gear 73, a third motor rotating shaft 74, a fixed shaft 75, a rotating housing 90, a fourth motor rotating shaft 76, an eighth motor rotating shaft 77, a sliding groove 78, a sliding block 79, a motor housing 80, a driving housing 81, an arc-shaped sliding block 82, a square-shaped sliding block 83, and a spiral sliding groove 84, wherein the differential 61 is supported and mounted inside the motor housing 80 through the differential 61; as shown in fig. 27, a spiral chute 84 is formed on the outer circumferential surface of the driving shell 81; one end of the driving case 81 has a fixed shaft 75; as shown in fig. 20, the driving housing 81 is mounted on the inner circumferential surface of the motor housing 80 through the fixed shaft 75 and the first motor support 65; as shown in fig. 25, the inner circumferential surface of the rotating case 90 is provided with a slide groove 78; as shown in fig. 24, the rotation case 90 is mounted on the outer circumferential surface of the driving case 81; two sides of the rotating shell 90 are respectively provided with a hydraulic hole; as shown in fig. 26, the slider 79 is composed of an arc slider 82 and a square slider 83; the slide block 79 is arranged in the spiral slide groove 84 at the joint of the slide groove 78, and the arc slide block 82 on the slide block 79 is partially arranged in the spiral slide groove 84; the square sliding block 83 on the sliding block 79 is partially arranged in the sliding groove 78; as shown in fig. 21, the second motor gear 66 and the second motor shaft 70 are respectively mounted at both ends of the outside of the rotating case 90; a ninth motor gear 92 is installed at one end of the second motor rotating shaft 70; one end of the ninth motor gear 92 is mounted with a one-way ring 67; one end of the fourth motor shaft 76 is mounted on an end surface of one side inside the motor housing 80; as shown in fig. 23, the other end of the fourth motor shaft 76 is connected to a one-way ring 67 mounted on a ninth motor gear 92; the third motor gear 68 is mounted on the fourth motor shaft 76; one end of the third motor rotating shaft 74 is mounted on the fixed shaft 75; the first motor gear 64 is mounted on one end of the third motor shaft 74; the seventh motor gear 73 is installed at the other end of the third motor rotating shaft 74; one end of the seventh motor gear 73 is mounted on the one-way ring 67; as shown in fig. 22, one end of the first motor rotating shaft 63 is connected to the differential 61; the other end is connected with a one-way ring 67 on a seventh motor gear 73; the eighth motor rotating shaft 77 is installed on the inner circumferential surface of the motor housing 80 through the first motor support 65; a fifth motor gear 71 and a sixth motor gear 72 are respectively installed at both ends of the eighth motor rotating shaft 77; the fifth motor gear 71 meshes with the second motor gear 66; the sixth motor gear 72 meshes with the first motor gear 64; one end of the eighteenth rotating shaft 57 is installed on an end surface of one side in the motor housing 80; the other end of the eighteenth rotating shaft 57 is connected with a differential 61; the fourth motor gear 69 is mounted on the eighteenth rotating shaft 57; the fourth motor gear 69 meshes with the third motor gear 68; the rotating shaft of the hydraulic motor 16 is connected with a differential 61; two hydraulic holes on two sides of the rotating shell 90 are respectively connected with hydraulic devices on the machine body 2.

As an alternative to four oscillating arms 3, four transmission mechanisms 20, four first spindles 7, four second spindles 9, four first gears 10, four third gears 12, four fourth gears 15, four fourth spindles 17, four fifth gears 18 and four sixth gears 19, five oscillating arms 3, five transmission mechanisms 20, five first spindles 7, five second spindles 9, five first gears 10, five third gears 12, five fourth gears 15, five fourth spindles 17, five fifth gears 18 and five sixth gears 19 are provided.

The diameter of the third gear 12 is 1 to 3 times the diameter of the fifth gear 18.

The power source of the hydraulic motor 16 is supplied to the body 2.

The sixth rotating shaft 31 and the ninth rotating shaft 40 are in one-way transmission, and the transmission direction is that the sixth rotating shaft 31 drives the ninth rotating shaft 40 to rotate; the twelfth gear 42 and the tenth gear 34 are in one-way transmission, and the twelfth gear 42 drives the tenth gear 34 to rotate in the transmission direction; the eighth gear 27 and the ninth gear 29 are in one-way transmission, and the eighth gear 27 drives the ninth gear 29 to rotate in the transmission direction; the eleventh gear 39 and the ninth gear 29 are in one-way transmission, and the eleventh gear 39 drives the ninth gear 29 to rotate in the transmission direction.

In summary, the following steps:

when the excavator which can swing based on the bucket 1 works, if stones are met, the met stones can be avoided through the rotation of the roller 49 at the front end of the bucket 1 and the swing of the swing arm 3; so that the excavator becomes easy in the working process.

The third rotating shaft 13 is arranged on the rotating shaft of the hydraulic motor 16; the four second gears 11 are uniformly arranged on the third rotating shaft 13; the four fourth rotating shafts 17 are uniformly arranged in the arc-shaped cavity 5; the four fourth gears 15 are respectively arranged on four fourth rotating shafts 17; the four fourth gears 15 are respectively meshed with the four second gears 11; four first rotating shafts 7 are uniformly arranged in the arc-shaped cavity 5; the four second rotating shafts 9 are uniformly arranged in the arc-shaped cavity 5; four sixth gears 19 are respectively mounted on the four first rotating shafts 7, and the four sixth gears 19 are respectively meshed with the four fourth gears 15; the four first gears 10 are respectively arranged on the four first rotating shafts 7; four fifth gears 18 are mounted on the four first rotation shafts 7, respectively; and a fifth gear 18, located on the same first shaft 7, is located between the first gear 10 and a sixth gear 19; the four third gears 12 are respectively arranged on the four second rotating shafts 9, and the four third gears 12 are respectively meshed with the four fifth gears 18; when the hydraulic motor 16 works, the hydraulic motor 16 drives the third rotating shaft 13 to rotate; the third rotating shaft 13 rotates to drive the four second gears 11 to rotate; the four second gears 11 rotate to respectively drive the four fourth gears 15 to rotate; the four fourth gears 15 rotate to respectively drive the four sixth gears 19 to rotate; the four sixth gears 19 rotate to respectively drive the four first rotating shafts 7 to rotate; the four first rotating shafts 7 rotate to drive the four first gears 10 and the four fifth gears 18 to rotate respectively; the four fifth gears 18 rotate to drive the four third gears 12 to rotate respectively.

In the invention, the guide rail 24 is arranged in the arc-shaped groove; a moving groove 45 is formed on one side surface of the guide rail 24; the moving block 44 is arranged in the moving groove 45 through the matching of the two guide blocks 86 and the two guide grooves 46; a first spring 43 is arranged between the moving block 44 and the moving groove 45; one end of the sixth rotating shaft 31 is installed in a circular hole of the moving block 44; a scroll spring 33 is installed between the sixth rotating shaft 31 and the moving block 44; the seventh gear 23 is mounted on the sixth rotating shaft 31; the twelfth gear 42 is mounted on the sixth rotating shaft 31; the tenth gear 34 is installed at one end of the seventh rotating shaft 36, and the tenth gear 34 is engaged with the twelfth gear 42; one end of the eighth rotating shaft 37 is connected with the other end of the seventh rotating shaft 36 through bevel gear in a matching manner; the eighth gear 27 is installed at the other end of the eighth rotating shaft 37; one end of the ninth rotating shaft 40 is connected with the other end of the sixth rotating shaft 31 in a matching way through bevel teeth; the eleventh gear 39 is installed at the other end of the ninth rotating shaft 40; a ninth gear 29 is mounted at one end of the fifth rotating shaft 30, and the ninth gear 29 is meshed with the eleventh gear 39 and the eighth gear 27 respectively; one end of the tenth rotating shaft 47 is connected with the other end of the fifth rotating shaft 30 in a matching way through bevel teeth; one end of the eleventh rotating shaft 48 is connected with the other end of the tenth rotating shaft 47 in a matching way through bevel teeth; a fourteenth gear 54 is installed at one end of the thirteenth rotating shaft 53; the other end of the thirteenth rotating shaft 53 is connected with the other end of the eleventh rotating shaft 48 in a matching manner through bevel teeth; the twelfth rotating shaft 50 is installed at both ends of the circular notch 89 on the trapezoidal block 55; the thirteenth gear 51 is installed on the twelfth rotating shaft 50 and located at the middle position; the thirteenth gear 51 meshes with the fourteenth gear 54; two rollers 49 are respectively installed at both ends of the twelfth rotating shaft 50; the seventh gear 23 is respectively engaged with the first gear 10 and the third gear 12; when the seventh gear 23 is engaged with the first gear 10; the rotation of the first gear 10 drives the seventh gear 23 to rotate; the seventh gear 23 rotates to drive the sixth rotating shaft 31 to rotate; the sixth rotating shaft 31 rotates to drive the twelfth gear 42 to rotate; the twelfth gear 42 rotates to drive the tenth gear 34 to rotate; the tenth gear 34 rotates to drive the seventh rotating shaft 36 to rotate; the seventh rotating shaft 36 rotates to drive the eighth rotating shaft 37 to rotate; the eighth rotating shaft 37 rotates to drive the eighth gear 27 to rotate; the eighth gear 27 rotates to drive the ninth gear 29 to rotate; when the seventh gear 23 is engaged with the third gear 12; the rotation of the third gear 12 drives the seventh gear 23 to rotate; the seventh gear 23 rotates to drive the sixth rotating shaft 31 to rotate; the sixth rotating shaft 31 rotates to drive the ninth rotating shaft 40 to rotate; the ninth rotating shaft 40 rotates to drive the eleventh gear 39 to rotate; the eleventh gear 39 rotates to drive the ninth gear 29 to rotate; the sixth rotating shaft 31 and the ninth rotating shaft 40 designed in the invention are in one-way transmission, and the transmission direction is that the sixth rotating shaft 31 drives the ninth rotating shaft 40 to rotate; the twelfth gear 42 and the tenth gear 34 are in one-way transmission, and the twelfth gear 42 drives the tenth gear 34 to rotate in the transmission direction; the eighth gear 27 and the ninth gear 29 are in one-way transmission, and the eighth gear 27 drives the ninth gear 29 to rotate in the transmission direction; the eleventh gear 39 and the ninth gear 29 are in one-way transmission, and the eleventh gear 39 drives the ninth gear 29 to rotate in the transmission direction. When the sixth rotating shaft 31 drives the ninth rotating shaft 40 to rotate, interference on transmission of the twelfth gear 42 and the tenth gear 34 is avoided; when the twelfth gear 42 drives the tenth gear 34 to rotate, no interference is caused to the transmission between the sixth rotating shaft 31 and the ninth rotating shaft 40; because the third gear 12 and the first gear 10 rotate in opposite directions in the invention; the invention makes the rotation direction of the ninth gear 29 consistent through the transmission of the twelfth gear 42, the tenth gear 34, the seventh rotating shaft 36, the eighth rotating shaft 37, the eighth gear 27 and the ninth gear 29 and the transmission of the ninth rotating shaft 40, the eleventh gear 39 and the ninth gear 29; when the ninth gear 29 rotates, the fifth rotating shaft 30 is driven to rotate; the fifth rotating shaft 30 rotates to drive the tenth rotating shaft 47 to rotate; the tenth rotating shaft 47 rotates to drive the eleventh rotating shaft 48 to rotate; the eleventh rotating shaft 48 rotates to drive the thirteenth rotating shaft 53 to rotate; the thirteenth rotating shaft 53 rotates to drive the fourteenth gear 54 to rotate; the fourteenth gear 54 rotates to drive the thirteenth gear 51 to rotate; the thirteenth gear 51 rotates to drive the two rollers 49 to rotate; when the swing arm 3 is subjected to resistance against the soil in the counterclockwise direction during excavation, the resistance is small since the beginning; the resistance of the scroll spring 33 to the sixth rotating shaft 31 is greater than the resistance received by the swing arm 3, so that the swing arm 3 does not swing; but the resistance to which the swing arm 3 is subjected increases continuously during the excavation; the sixth rotating shaft 31 is mounted inside the swing arm 3; when the resistance of the spiral spring 33 to the sixth rotating shaft 31 is smaller than the resistance of the soil to the swing arm 3; the oscillating arm 3 will oscillate in a counter-clockwise direction along the axis of the first gear wheel 10; when the swing arm 3 is under resistance by soil in a clockwise direction during excavation; since the initial resistance is small, the resistance of the oscillating arm 3 is smaller than the tension of the spiral spring 33 but larger than the compression force of the first spring 43, and the oscillating arm 3 moves upward along the moving groove 45; so that the seventh gear 23 meshes with the third gear 12; in the process, the resistance of the spiral spring 33 to the sixth rotating shaft 31 is greater than the resistance received by the swing arm 3, so that the swing arm 3 cannot swing; but the resistance to which the swing arm 3 is subjected increases continuously during the excavation; the sixth rotating shaft 31 is mounted inside the swing arm 3; when the resistance of the spiral spring 33 to the sixth rotating shaft 31 is smaller than the resistance received by the oscillating arm 3; the oscillating arm 3 will oscillate clockwise along the axis of the third gear wheel 12; when the excavation is finished; by controlling the hydraulic motor 16 to reverse; so that the swing arm 3 in the counterclockwise direction and the swing arm 3 in the clockwise direction are restored to the original positions. The third gear 12 of the present invention may have a diameter 2-3 times the diameter of the fifth gear 18. The speed of rotation of the roller 49 when the swing arm 3 swings in the counterclockwise direction is made greater than the speed of rotation of the roller 49 when the swing arm 3 swings in the clockwise direction by the speed change of the fifth gear 18; the function is to make most of the four swing arms 3 tend to swing clockwise by adjusting the rotation speed of the roller 49 when the roller 49 is in contact with the stone; therefore, the excavator bucket 1 can wrap more soil in the process of excavating soil; so that the excavator has higher soil digging efficiency.

In the invention, a spiral chute 84 is arranged on the outer circular surface of a driving shell 81; the driving case 81 is mounted on the inner circumferential surface of the motor housing 80 through the fixed shaft 75 and the first motor support 65; the inner circular surface of the rotating shell 90 is provided with a chute 78; the rotation case 90 is installed on the outer circumferential surface of the driving case 81; the slide block 79 is arranged at the joint of the spiral chute 84 and the chute 78, and the two ends of the outer side of the rotating shell 90 are respectively provided with the second motor gear 66 and the second motor rotating shaft 70; a ninth motor gear 92 is installed at one end of the second motor rotating shaft 70; one end of the ninth motor gear 92 is mounted with a one-way ring 67; one end of the fourth motor shaft 76 is connected to a one-way ring 67 mounted on the ninth motor gear 92; the third motor gear 68 is mounted on the fourth motor shaft 76; the first motor gear 64 is mounted on one end of the third motor shaft 74; the seventh motor gear 73 is installed at the other end of the third motor rotating shaft 74; one end of the seventh motor gear 73 is mounted on the one-way ring 67; one end of the first motor rotating shaft 63 is connected with the differential 61; the other end is connected with a one-way ring 67 on a seventh motor gear 73; a fifth motor gear 71 and a sixth motor gear 72 are respectively installed at both ends of the eighth motor rotating shaft 77; the fifth motor gear 71 meshes with the second motor gear 66; the sixth motor gear 72 meshes with the first motor gear 64; one end of the eighteenth rotating shaft 57 is connected with the differential 61; the fourth motor gear 69 is mounted on the eighteenth rotating shaft 57; the fourth motor gear 69 meshes with the third motor gear 68; the rotating shaft of the hydraulic motor 16 is connected with a differential 61; two hydraulic holes on two sides of the rotating shell 90 are respectively connected with a hydraulic device on the machine body 2; when the hydraulic device on the machine body 2 drives the liquid in the spiral chute 84 on the driving shell 81 to flow, the liquid can push the slide block 79 to move; since the driving case 81 is fixed to the inner circumferential surface of the housing of the hydraulic motor 16; the slider 79 moves to rotate the rotation housing 90; when the rotating shell 90 rotates counterclockwise, the rotating shell 90 will drive the second motor rotating shaft 70 to rotate; the second motor shaft 70 rotates to drive the ninth motor gear 92 to rotate; the ninth motor gear 92 rotates to drive the fourth motor shaft 76 to rotate; the rotation of the fourth motor shaft 76 will drive the third motor gear 68 to rotate the fourth motor gear 69; the fourth motor gear 69 rotates to drive the eighteenth rotating shaft 57 to rotate; the eighteenth rotating shaft 57 can drive the rotating shaft in the differential 61 to rotate; when the rotating shell 90 rotates clockwise, the rotating shell 90 drives the second motor gear 66 to rotate; the second motor gear 66 rotates to drive the fifth motor gear 71 to rotate; the fifth motor gear 71 rotates to drive the eighth motor shaft 77 to rotate; the eighth motor rotating shaft 77 rotates to drive the sixth motor gear 72 to rotate; the sixth motor gear 72 rotates to drive the first motor gear 64 to rotate; the first motor gear 64 rotates to drive the third motor shaft 74 to rotate; the third motor shaft 74 rotates to drive the seventh motor gear 73 to rotate; the seventh motor gear 73 rotates to drive the first motor shaft 63 to rotate; the rotation of the first motor rotating shaft 63 can drive the rotating shaft in the differential 61 to rotate; the rotation of the rotating shaft in the differential 61 drives the rotating shaft of the hydraulic motor 16 to rotate; a one-way ring 67 is arranged between the seventh motor gear 73 and the first motor rotating shaft 63; a one-way ring 67 is arranged between the ninth motor gear 92 and the fourth motor rotating shaft 76; the function of the one-way ring 67 is to prevent the fourth motor gear 69 from being affected when the rotating case 90 rotates counterclockwise; the rotation case 90 does not affect the first motor rotation shaft 63 when rotating clockwise.

The specific implementation mode is as follows: when the excavator designed by the invention works, a power source is provided for the hydraulic motor 16 through the machine body 2; so that the hydraulic motor 16 drives the third rotating shaft 13 to rotate; the third rotating shaft 13 rotates to drive the four second gears 11 to rotate; the four second gears 11 rotate to respectively drive the four fourth gears 15 to rotate; the four fourth gears 15 rotate to respectively drive the four sixth gears 19 to rotate; the four sixth gears 19 rotate to respectively drive the four first rotating shafts 7 to rotate; the four first rotating shafts 7 rotate to drive the four first gears 10 and the four fifth gears 18 to rotate respectively; the four fifth gears 18 rotate to drive the four third gears 12 to rotate respectively. When the swing arm 3 is subjected to resistance against the soil in the counterclockwise direction during excavation, the seventh gear 23 meshes with the first gear 10; the rotation of the first gear 10 drives the seventh gear 23 to rotate; the seventh gear 23 rotates to drive the sixth rotating shaft 31 to rotate; the sixth rotating shaft 31 rotates to drive the twelfth gear 42 to rotate; the twelfth gear 42 rotates to drive the tenth gear 34 to rotate; the tenth gear 34 rotates to drive the seventh rotating shaft 36 to rotate; the seventh rotating shaft 36 rotates to drive the eighth rotating shaft 37 to rotate; the eighth rotating shaft 37 rotates to drive the eighth gear 27 to rotate; the eighth gear 27 rotates to drive the ninth gear 29 to rotate; the ninth gear 29 drives the fifth rotating shaft 30 to rotate when rotating; the fifth rotating shaft 30 rotates to drive the tenth rotating shaft 47 to rotate; the tenth rotating shaft 47 rotates to drive the eleventh rotating shaft 48 to rotate; the eleventh rotating shaft 48 rotates to drive the thirteenth rotating shaft 53 to rotate; the thirteenth rotating shaft 53 rotates to drive the fourteenth gear 54 to rotate; the fourteenth gear 54 rotates to drive the thirteenth gear 51 to rotate; the thirteenth gear 51 rotates to drive the two rollers 49 to rotate; because the resistance is small at the beginning; the resistance of the scroll spring 33 to the sixth rotating shaft 31 is greater than the resistance received by the swing arm 3, so that the swing arm 3 does not swing; but the resistance to which the swing arm 3 is subjected increases continuously during the excavation; the sixth rotating shaft 31 is mounted inside the swing arm 3; when the resistance of the spiral spring 33 to the sixth rotating shaft 31 is smaller than the resistance of the soil to the swing arm 3; the oscillating arm 3 will oscillate in a counter-clockwise direction along the axis of the first gear wheel 10; similarly, when the swing arm 3 is subjected to resistance of soil in the clockwise direction during excavation; since the initial resistance is small, the resistance of the oscillating arm 3 is smaller than the tension of the spiral spring 33 but larger than the compression force of the first spring 43, and the oscillating arm 3 moves upward along the moving groove 45; so that the seventh gear 23 meshes with the third gear 12; at this time, the third gear 12 rotates to drive the seventh gear 23 to rotate; the seventh gear 23 rotates to drive the sixth rotating shaft 31 to rotate; the sixth rotating shaft 31 rotates to drive the ninth rotating shaft 40 to rotate; the ninth rotating shaft 40 rotates to drive the eleventh gear 39 to rotate; the eleventh gear 39 rotates to drive the ninth gear 29 to rotate; the ninth gear 29 drives the fifth rotating shaft 30 to rotate when rotating; the fifth rotating shaft 30 rotates to drive the tenth rotating shaft 47 to rotate; the tenth rotating shaft 47 rotates to drive the eleventh rotating shaft 48 to rotate; the eleventh rotating shaft 48 rotates to drive the thirteenth rotating shaft 53 to rotate; the thirteenth rotating shaft 53 rotates to drive the fourteenth gear 54 to rotate; the fourteenth gear 54 rotates to drive the thirteenth gear 51 to rotate; the thirteenth gear 51 rotates to drive the two rollers 49 to rotate; in the process, the resistance of the spiral spring 33 to the sixth rotating shaft 31 is greater than the resistance received by the swing arm 3, so that the swing arm 3 cannot swing; but the resistance to which the swing arm 3 is subjected increases continuously during the excavation; the sixth rotating shaft 31 is mounted inside the swing arm 3; when the resistance of the spiral spring 33 to the sixth rotating shaft 31 is smaller than the resistance received by the oscillating arm 3; the oscillating arm 3 will oscillate clockwise along the axis of the third gear wheel 12; when the excavation is finished; by controlling the hydraulic motor 16 to reverse; so that the swing arm 3 in the counterclockwise direction and the swing arm 3 in the clockwise direction are restored to the original positions.

Claims

1. The utility model provides a can wobbling excavator based on bucket which characterized in that: the excavator comprises an excavator bucket and a machine body, wherein the excavator bucket is arranged on the machine body;

the bucket comprises a swing arm, a fixing plate, an arc-shaped cavity, a driving mechanism, a trapezoidal block and a circular notch; the transmission mechanism is characterized in that the fixed plate consists of two first arc-shaped plates and a second arc-shaped plate; the two first arc-shaped plates are symmetrically arranged on two sides of the second arc-shaped plate; one end of the second arc-shaped plate is flush with one end of the first arc-shaped plate corresponding to the first arc-shaped plate; the other end of the second arc-shaped plate is positioned in the middle of the first arc-shaped plate in the arc direction; an arc-shaped cavity is formed in the end face, located on one side of the middle position of the first arc-shaped plate, of the second arc-shaped plate; the driving mechanism is arranged on the inner side of the arc-shaped cavity; one end of each of the four swing arms is provided with a trapezoidal block; a round gap is arranged on each of the four trapezoidal blocks; the four swing arms are uniformly arranged between the two first arc-shaped plates and matched with the second arc-shaped plates, and the four swing arms are matched with the two first arc-shaped plates; the four transmission mechanisms are respectively arranged at the inner sides of the four swing arms;

the driving mechanism comprises a first rotating shaft, a first support, a second rotating shaft, a first gear, a second gear, a third rotating shaft, a second support, a fourth gear, a hydraulic motor, a fourth rotating shaft, a fifth gear and a sixth gear, wherein the hydraulic motor is arranged at one end of the arc-shaped cavity; the third rotating shaft is arranged on the rotating shaft of the hydraulic motor; the four second gears are uniformly arranged on the third rotating shaft; the two fourth rotating shafts are respectively installed in the arc-shaped cavity through two second supports and located in the middle of the arc-shaped cavity; two sides of the two fourth rotating shafts positioned in the middle of the arc-shaped cavity are respectively provided with a fourth rotating shaft; one opposite ends of the two fourth rotating shafts positioned at the two sides of the middle position are respectively arranged in the arc-shaped cavity through a second support, and the other ends are respectively arranged on the corresponding arc-shaped cavity walls; the four fourth gears are respectively arranged on the four fourth rotating shafts; the four fourth gears are respectively meshed with the four second gears; the two first rotating shafts are respectively installed in the arc-shaped cavity through two first supports and located in the middle of the arc-shaped cavity; two sides of the two first rotating shafts positioned in the middle of the arc-shaped cavity are respectively provided with a first rotating shaft; the opposite ends of the two first rotating shafts positioned at the two sides of the two first rotating shafts at the middle position are respectively arranged in the arc-shaped cavity through a first support, and the other ends are respectively arranged on the corresponding arc-shaped cavity walls; the four second rotating shafts are uniformly arranged in the arc-shaped cavity, and the two second rotating shafts positioned in the middle are respectively arranged in the arc-shaped cavity through two first supports; one ends of the two second rotating shafts, which are positioned at two sides and are opposite to each other, are respectively arranged in the arc-shaped cavity through a first support; the other ends of the two second rotating shafts positioned at the two sides are respectively arranged on the corresponding arc-shaped cavity walls; the four sixth gears are respectively arranged on the four first rotating shafts and are respectively meshed with the four fourth gears; the four first gears are respectively arranged on the four first rotating shafts; the four fifth gears are respectively arranged on the four first rotating shafts; and the fifth gear on the same first rotating shaft is positioned between the first gear and the sixth gear; the four third gears are respectively arranged on the four second rotating shafts and are respectively meshed with the four fifth gears;

the transmission mechanism comprises a seventh gear, a guide rail, a first connecting plate, a second connecting plate, an eighth gear third support, a ninth gear, a fifth rotating shaft, a sixth rotating shaft, a fourth support, a volute spring, a tenth gear, a fifth support, a seventh rotating shaft, an eighth rotating shaft, a sixth support, an eleventh gear, a ninth rotating shaft, a seventh support, a twelfth gear, a first spring, a moving block, a moving groove, a guide groove, a tenth rotating shaft, an eleventh rotating shaft, a roller, a twelfth rotating shaft, a thirteenth gear, an eighth support, a ninth support, a tenth support, a thirteenth rotating shaft and a fourteenth gear, wherein the guide rail is arranged in the arc-shaped groove; a moving groove is formed on one side surface of the guide rail; two guide grooves are symmetrically arranged on two sides of the moving groove; two symmetrical guide blocks are arranged on two sides of the moving block; the moving block is arranged in the moving groove through the matching of the two guide blocks and the two guide grooves; a first spring is arranged between the moving block and the moving groove; the first connecting plate is arranged at the upper end of the inner side of the swing arm through a second connecting plate; the sixth rotating shaft is arranged on the lower side of the first connecting plate through a fourth support; one end of the sixth rotating shaft is arranged in a circular hole in the moving block; a volute spiral spring is arranged between the sixth rotating shaft and the moving block; the inner end of the volute spiral spring is arranged on the sixth rotating shaft; the outer end of the scroll spring is arranged on the moving block; the seventh gear is arranged on the sixth rotating shaft; the twelfth gear is arranged on the sixth rotating shaft; the seventh rotating shaft is provided with the lower end of the first connecting plate through a fifth support; the tenth gear is arranged at one end of the seventh rotating shaft and is meshed with the twelfth gear; the eighth rotating shaft is arranged at the lower end of the first connecting plate through a seventh support; one end of the eighth rotating shaft is connected with the other end of the seventh rotating shaft in a matching way through bevel teeth; the eighth gear is arranged at the other end of the eighth rotating shaft; the ninth rotating shaft is arranged on the inner side of the swinging arm through a sixth support; one end of the ninth rotating shaft is connected with the other end of the sixth rotating shaft in a matching way through bevel teeth; the eleventh gear is arranged at the other end of the ninth rotating shaft; the fifth rotating shaft is arranged on the inner side of the swinging arm through a third support; a ninth gear is mounted at one end of the fifth rotating shaft and is respectively meshed with the eleventh gear and the eighth gear; the tenth rotating shaft is arranged on the inner side of the swinging arm through a tenth support; one end of the tenth rotating shaft is connected with the other end of the fifth rotating shaft in a matching way through bevel teeth; the eleventh rotating shaft is arranged on the inner side of the swinging arm through a ninth support; one end of the eleventh rotating shaft is connected with the other end of the tenth rotating shaft in a matching way through bevel teeth; the thirteenth rotating shaft is arranged on the inner side of the swing arm through an eighth support; the fourteenth gear is arranged at one end of the thirteenth rotating shaft; the other end of the thirteenth rotating shaft is connected with the other end of the eleventh rotating shaft in a matched mode through bevel teeth; the twelfth rotating shaft is arranged at two ends of the round gap on the trapezoidal block; the thirteenth gear is arranged on the twelfth rotating shaft and is positioned in the middle; the thirteenth gear is meshed with the fourteenth gear; the two rollers are respectively arranged at two ends of the twelfth rotating shaft;

2. A bucket swingable based excavator according to claim 1, wherein: the hydraulic motor comprises a fourteenth rotating shaft, an eighteenth rotating shaft, a rotating shell, a differential support, a differential mechanism, a first motor rotating shaft, a first motor gear, a first motor support, a second motor gear, a one-way ring, a third motor gear, a fourth motor gear, a second motor rotating shaft, a fifth motor gear, a sixth motor gear, a seventh motor gear, a third motor rotating shaft, a fixed shaft, a rotating shell, a fourth motor rotating shaft, an eighth motor rotating shaft, a sliding groove, a sliding block, a motor shell, a driving shell, an arc-shaped sliding block, a square-shaped sliding block and a spiral sliding groove, wherein the differential mechanism is arranged on the inner side of the motor shell through the differential mechanism support; a spiral chute is arranged on the outer circular surface of the driving shell; one end of the driving shell is provided with a fixed shaft; the driving shell and the first motor are supported and arranged on the inner circular surface of the motor shell through a fixed shaft; the inner circle surface of the rotating shell is provided with a chute; the rotating shell is arranged on the outer circular surface of the driving shell; two sides of the rotating shell are respectively provided with a hydraulic hole; the sliding block consists of an arc sliding block and a square sliding block; the sliding block is arranged at the joint of the spiral chute and the chute, and the arc-shaped sliding block part on the sliding block is arranged in the spiral chute; the square sliding block part on the sliding block is arranged in the sliding groove; a second motor gear and a second motor rotating shaft are respectively arranged at two ends of the outer side of the rotating shell; a ninth motor gear is arranged at one end of the second motor rotating shaft; one end of the ninth motor gear is provided with a one-way ring; one end of a fourth motor rotating shaft is arranged on the end surface of one side in the motor shell; the other end of the fourth motor rotating shaft is connected with a one-way ring arranged on the ninth motor gear; the third motor gear is arranged on the fourth motor rotating shaft; one end of the rotating shaft of the third motor is arranged on the fixed shaft; the first motor gear is arranged at one end of the rotating shaft of the third motor; the seventh motor gear is arranged at the other end of the third motor rotating shaft; one end of the seventh motor gear is arranged on the one-way ring; one end of a first motor rotating shaft is connected with one of two driven shafts of the differential; the other end is connected with a one-way ring on a seventh motor gear; the eighth motor rotating shaft is supported and arranged on the inner circular surface of the motor shell through the first motor; the fifth motor gear and the sixth motor gear are respectively arranged at two ends of the eighth motor rotating shaft; the fifth motor gear is meshed with the second motor gear; the sixth motor gear is meshed with the first motor gear; one end of the eighteenth rotating shaft is arranged on the end surface of one side in the motor shell; the other end of the eighteenth rotating shaft is connected with the other driven shaft of the two driven shafts of the differential; the fourth motor gear is arranged on the eighteenth rotating shaft; the fourth motor gear is meshed with the third motor gear; the rotating shaft of the hydraulic motor is connected with a driving shaft of the differential mechanism; two hydraulic holes on two sides of the rotating shell are respectively connected with a hydraulic device on the machine body.

3. A bucket swingable based excavator according to claim 1, wherein: as an alternative to four oscillating arms, four transmission mechanisms, four first rotating shafts, four second rotating shafts, four first gears, four third gears, four fourth rotating shafts, four fifth gears and four sixth gears, the number of oscillating arms, transmission mechanisms, first rotating shafts, second rotating shafts, first gears, third gears, fourth rotating shafts, fifth gears and sixth gears is 5, 6 or 7.

4. A bucket swingable based excavator according to claim 1, wherein: the diameter of the third gear is 1-3 times of that of the fifth gear.

5. A bucket swingable based excavator according to claim 1, wherein: the power source of the hydraulic motor is connected to the machine body.

6. A bucket swingable based excavator according to claim 1, wherein: the sixth rotating shaft and the ninth rotating shaft are in one-way transmission, and the transmission direction is that the sixth rotating shaft drives the ninth rotating shaft to rotate; the twelfth gear and the tenth gear are in one-way transmission, and the twelfth gear drives the tenth gear to rotate in the transmission direction; the eighth gear and the ninth gear are in one-way transmission, and the eighth gear drives the ninth gear to rotate in the transmission direction; one-way transmission is formed between the eleventh gear and the ninth gear, and the transmission direction is that the eleventh gear drives the ninth gear to rotate.