Transmission shaft device for swing arm type machine

Abstract

The invention relates to the technical field of swing arm type machinery, in particular to a transmission shaft device for swing arm type machinery, which comprises a mounting frame, a transmission shaft is rotatably mounted on the mounting frame, a sliding frame capable of reciprocating left and right is slidably mounted on the mounting frame, a rotatable central shaft is rotatably mounted on the sliding frame, and both the central shaft and the sliding frame are driven by the transmission shaft. A stroke adjusting assembly for adjusting the reciprocating stroke of the sliding frame is arranged on the mounting frame, a square guide groove is formed in the sliding frame, and the center shaft is rotationally sleeved with an upper rotating frame. The mowing device has the beneficial effects that flexible conversion between a circular mowing radius mode and a square mowing radius mode is achieved, a first electromagnet and a second electromagnet control movement of a first magnetic attraction base and a second magnetic attraction base correspondingly, then tensioning or loosening of a belt is controlled, linkage of the center shaft, the upper swing frame and the lower swing frame is achieved, and the mowing radius mode is switched to the square mowing radius mode. Therefore, the follow-up frame and the mower can be flexibly switched between a circular track and a square track.

Description

Technical Field

[0001] The present invention relates to the technical field of swing arm type machinery, in particular to a transmission shaft device for a swing arm type machinery. Background Art

[0002] In the prior art, the patent document with publication number CN112154765B discloses a swing-arm type mechanical transmission shaft device. The above device has a square mowing radius when mowing grass. When the outer arm of the mechanical arm rotates, the inner arm of the mechanical arm can extend outward, so that the mowing path of the inner arm of the mechanical arm can move along a straight line when the outer arm of the mechanical arm rotates, thereby being better adapted to the mowing of grass, and the mowing is more thorough, convenient and flexible, which improves the flexibility and practicality of the device. However, the above device has the following technical problems when used: 1. The square transmission structure of the mowing radius is relatively complex; 2. It is not convenient to switch between circular mowing radius and square mowing radius mode; 3. It is not convenient to increase the cutting coverage of the lawn mower per unit time through the reciprocating motion of the lawn mower; Based on this, the present invention provides a transmission shaft device for a swing arm type machine to solve the problems raised in the above background technology. Summary of the invention

[0003] The present invention aims at the technical problems existing in the prior art and provides a transmission shaft device for a swing arm type machine to solve the problems that the square transmission structure of the mowing radius of the existing device is relatively complicated, it is not convenient to switch between the circular mowing radius and the square mowing radius mode, and it is not convenient to increase the cutting coverage of the mower per unit time through the reciprocating motion of the mower.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a transmission shaft device for a swing arm type machine comprises a mounting frame, a transmission shaft is rotatably mounted on the mounting frame, a sliding frame that can reciprocate left and right is slidably mounted on the mounting frame, a rotatable central shaft is rotatably mounted on the sliding frame, the central shaft and the sliding frame are both driven by the transmission shaft, a stroke adjustment component for adjusting the reciprocating stroke of the sliding frame is provided on the mounting frame, a square guide groove is provided on the sliding frame, an upper rotating frame is rotatably sleeved on the central shaft, and the upper rotating frame is provided between the upper rotating frame and the central shaft. A first magnetically controlled clutch assembly is provided, which controls whether the central axis is linked to the upper rotating frame; a follower frame is slidably connected to the inner wall of the upper rotating frame; a group of follower springs are installed between the follower frame and the upper rotating frame; a limiting guide column slidably connected to a square guide groove is installed on the follower frame; a lower rotating frame is rotatably installed on the follower frame; a second magnetically controlled clutch assembly is installed between the lower rotating frame and the central axis; the second magnetically controlled clutch assembly controls whether the central axis is linked to the lower rotating frame; and a power output assembly is installed on the lower rotating frame.

[0005] Based on the above technical solution, the present invention can also be improved as follows.

[0006] Furthermore, it includes a reciprocating inclined plate and a semi-conical transmission column driven by a transmission shaft, the semi-conical transmission column is respectively provided with a transmission cone surface and a non-transmission part, the reciprocating inclined plate is transmission-connected with the transmission cone surface, a group of elastic fastening parts are installed between the reciprocating inclined plate and the sliding frame, a group of elastic limit parts are installed between the sliding frame and the mounting frame, a sleeve shaft is rotatably installed on the sliding frame, a first square groove with a front end opening is fixedly provided inside the sleeve shaft and is slidably connected to the transmission shaft, a first bevel gear is installed on both the sleeve shaft and the center shaft, and the two first bevel gears are meshed with each other.

[0007] The beneficial effect of adopting the above scheme is that, when working, the transmission shaft drives the semi-conical transmission column to rotate, and when the transmission cone surface of the semi-conical transmission column contacts the reciprocating inclined plate, the two are tightly fitted under the action of the elastic fastening member, and the transmission cone surface pushes the reciprocating inclined plate to make the sliding frame reciprocate left and right. This scheme solves the problem that the swing arm type mechanical transmission shaft device in the prior art is difficult to achieve reciprocating motion. Compared with the prior art, the device can have a reciprocating motion function. In actual use, the lower rotary disk is connected to an external lawn mower, and the reciprocating displacement effect can be achieved through the lower rotary disk. On the one hand, it can effectively increase the cutting coverage of the lawn mower per unit time, and on the other hand, it can make the grass material adhering to the cutting machine vibrate and shake off, thereby maintaining the grass cutting effect of the lawn mower. The elastic clamping member comprises a T-shaped clamping rod installed on the reciprocating inclined plate, the T-shaped clamping rod is slidably connected with the sliding frame, and a clamping spring is sleeved on the T-shaped clamping rod and corresponds to the position between the reciprocating inclined plate and the sliding frame.

[0008] Furthermore, the stroke adjustment assembly includes an adjusting screw rotatably connected to the mounting frame, the adjusting screw is arranged parallel to the transmission shaft, an adjusting plate is installed on the adjusting screw for transmission, the semi-conical transmission column is rotatably installed on the adjustment plate, a second square groove with openings at both ends is fixedly opened inside the semi-conical transmission column, a synchronous shaft and a second square shaft are rotatably installed on the mounting frame respectively, a second bevel gear is installed on the synchronous shaft and the transmission shaft, the two second bevel gears are meshed with each other, a toothed synchronous belt is transmission-connected between the synchronous shaft and the second square shaft, and the second square shaft is slidably connected to the second square groove.

[0009] The beneficial effect of adopting the above scheme is that, when in use, the adjusting screw is rotated to drive the adjusting plate to move, thereby changing the position of the semi-conical transmission column. The adjusting screw rotation direction and number of turns can accurately control the moving distance of the adjusting plate, thereby adjusting the position of the semi-conical transmission column. When the position of the semi-conical transmission column changes, the contact point and transmission path between the semi-conical transmission column and the reciprocating inclined plate also change, and the transmission stroke of the reciprocating inclined plate is changed, and finally the reciprocating stroke of the sliding frame is adjusted. By adjusting the reciprocating stroke of the sliding frame, the cutting coverage of the mower per unit time and the vibration intensity during cutting can be adjusted; Furthermore, the cross-sections of the first square shaft, the first square groove, the second square shaft and the second square groove are all regular hexagons, the central angles of the transmission cone surface and the non-transmission part are both 180°, and the transmission cone surface and the reciprocating inclined plate are fixedly provided with anti-slip teeth.

[0010] The beneficial effect of adopting the above scheme is that the first square axis, the first square groove, the second square axis and the second square groove of the regular hexagon can ensure stable transmission between the transmission shaft and the sleeve shaft, and between the second square axis and the semi-conical transmission column, and prevent relative rotation; The central angles of the transmission cone and the non-transmission part are both 180°, so that the semi-conical transmission column can regularly contact and disengage with the reciprocating inclined plate during rotation, achieving stable reciprocating motion; The anti-skid teeth on the transmission cone and reciprocating inclined plate increase the friction force and ensure the transmission reliability; This solution solves the problems of unstable transmission and low transmission efficiency in the prior art, and improves transmission stability and transmission efficiency compared with the prior art; Further, the first magnetically controlled clutch assembly includes a first magnetic seat and a tensioning seat slidably connected to the sliding frame, and the sides of the first magnetic seat and the tensioning seat are both installed with a group of positioning springs limited by the sliding frame, the inner wall of the first magnetic seat is rotatably installed with a wheel axle, the inner wall of the tensioning seat is rotatably installed with a tensioning shaft, a first belt is transmission-installed on the central shaft, the wheel axle and the tensioning shaft are both transmission-connected with the first belt, a second belt is transmission-installed on the wheel axle, a first pulley adapted to be connected to the second belt is fixedly provided on the upper rotating frame, and a first electromagnet is installed on the sliding frame and at a position relative to the first magnetic seat.

[0011] The beneficial effect of adopting the above scheme is that when it is necessary to drive the follower frame to rotate in a square trajectory, the first electromagnet is energized to generate magnetism to attract the first magnetic seat, and the second electromagnet is de-energized. The first magnetic seat moves under the action of suction, driving the wheel shaft away from the central axis and tightening the first belt. At this time, the central axis rotates to drive the wheel shaft to rotate through the first belt, and then drives the upper rotating frame to rotate through the second belt, realizing the linkage between the central axis and the upper rotating frame, and the limit guide column cooperates with the square guide groove so that the stroke forms a square path when the follower frame rotates; When it is necessary to drive the follower frame to rotate in a circular trajectory, the first electromagnet is powered off, the first magnetic seat is reset under the action of the positioning spring, the first belt is relaxed, and the central shaft and the upper rotating frame are disengaged. This solution solves the problem that the transmission connection method in the prior art is complex and difficult to flexibly control the linkage. Compared with the prior art, flexible control of the linkage between the central shaft and the upper rotating frame is achieved through electromagnetic control, with a simple structure and easy operation.

[0012] The gear train is a gear that is coupled to the gear train, and the gear train is coupled to the gear train, and the gear train is coupled to the gear train, and the gear train is coupled to the gear train, and the gear train is coupled to the gear train.

[0013] The beneficial effect of adopting the above scheme is that when it is necessary to drive the follower frame to rotate in a circular trajectory, the first electromagnet is powered off and the second electromagnet is powered on. After the second electromagnet is powered on, it attracts the second magnetic seat, and the second magnetic seat overcomes the elastic force of the limit spring and moves, driving the driven shaft away from the third shaft, so that the third belt is tensioned; At this time, the third shaft rotates through the third belt to drive the feed shaft and the transmission worm to rotate, and the transmission worm is connected to the steering worm gear on the lower rotating frame, driving the lower rotating frame to rotate, realizing the linkage between the central shaft and the lower rotating frame, and realizing that the follower frame and the mower can rotate in a circular trajectory; When the second electromagnet is powered off, the second magnetic seat is reset under the action of the limit spring, the third belt is loosened, and the central shaft is disengaged from the lower rotating frame; This solution solves the problem of inconvenient transmission control between the follower frame and the lower rotating frame in the prior art. Compared with the prior art, it realizes flexible control of transmission between the follower frame and the lower rotating frame and improves the motion control accuracy of the device.

[0014] Furthermore, the first magnetic seat and the second magnetic seat are both equipped with permanent magnets, and the first belt, the second belt and the third belt are all metal chain belts.

[0015] The beneficial effect of adopting the above scheme is that the first magnetic seat and the second magnetic seat have built-in permanent magnets, which can respond more quickly when the electromagnet is powered on and off, thereby realizing rapid control of the transmission component; The first belt, the second belt and the third belt are made of metal chain belts, which make the belts hard and non-elastic, thus ensuring the reliability of transmission connection; Furthermore, the power output assembly includes a gear shaft and a power wheel disc rotatably connected to the follower frame, a third bevel gear is installed on the gear shaft and the third shaft, the two third bevel gears are meshed with each other, a driving gear is installed on the gear shaft, and a passive gear ring connected to the driving gear is installed on the power wheel disc, and the power wheel disc is used to provide power to the swing arm lawn mower.

[0016] The beneficial effect of adopting the above solution is that the gear shaft and the third bevel gear on the third shaft are meshed with each other, and the rotation of the third shaft drives the gear shaft to rotate; The driving gear on the gear shaft is connected to the passive gear ring on the power wheel to rotate the power wheel; the power wheel transmits power to the swing arm mower; This solution solves the problems of unstable power output and low power transmission efficiency in the prior art. Compared with the prior art, it achieves stable power output and improves power transmission efficiency.

[0017] Furthermore, the lower rotating frame is provided with a group of connection holes for connecting with the swing arm mower, the mounting frame is provided with a group of mounting holes for connecting with the swing arm manipulator, and the transmission shaft is provided with a group of flange connection holes.

[0018] The connection hole on the lower rotating frame is convenient for connecting with the swing arm mower to achieve power output; The mounting holes on the mounting frame facilitate connection with the swing arm manipulator, so that the device can better adapt to the swing arm manipulator; The flange connection hole on the transmission shaft is convenient for connection with other power sources; This solution solves the problem of inconvenient connection between the device and other equipment in the prior art, and improves the versatility and installation convenience of the device compared to the prior art.

[0019] Furthermore, the axes of the third shaft and the hollow shaft are perpendicular to the axis of the central shaft, and the rotation axis of the lower rotating frame and the rotation axis of the power wheel are on the same straight line.

[0020] When in use, the axial relationship between the third axis and the middle axis, which is perpendicular to the central axis, ensures the direction and stability of power transmission; The upper rotating frame and the rotating axis of the power wheel are in the same straight line, making the power transmission smoother and reducing energy loss; This solution solves the problems of unstable direction and large energy loss in the power transmission process in the prior art, and improves the stability and efficiency of power transmission compared to the prior art.

[0021] The beneficial effects of the present invention are: 1. The present invention realizes flexible conversion between circular and square mowing radius modes. In the present invention, the first electromagnet and the second electromagnet respectively control the movement of the first magnetic seat and the second magnetic seat, thereby controlling the tension or relaxation of the belt to realize the linkage between the central axis and the upper rotating frame and the lower rotating frame, so that the follower frame and the mower can flexibly switch between circular and square trajectories. The operation is simple and convenient, which greatly improves the adaptability of the device.

[0022] 2. The present invention effectively simplifies the mowing radius transmission structure. The square transmission structure of the mowing radius in the prior art is complicated, while the present invention realizes the reciprocating motion of the device through a semi-conical transmission column, a reciprocating inclined plate and related coupling components. The transmission shaft drives the semi-conical transmission column to rotate, and its transmission cone surface cooperates with the reciprocating inclined plate to push the sliding frame to reciprocate left and right under the action of the elastic fastening member. The structural design is ingenious. Compared with the prior art, the reciprocating motion function of the lawn mower is realized in a simpler way, reducing the complexity of the transmission structure.

[0023] 3. The present invention significantly improves the cutting coverage of the lawn mower per unit time. The sliding frame of the present invention realizes left and right reciprocating motion under the drive of the semi-conical transmission column, driving the lower rotating disk and the lawn mower connected thereto to move back and forth synchronously. This reciprocating displacement effect can not only effectively increase the cutting coverage of the lawn mower per unit time, but also can shake off the grass material adhering to the cutting machine by vibration, thereby maintaining the grass cutting effect of the lawn mower, effectively solving the shortcomings of the existing technology and improving the grass cutting efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a transmission shaft device for a swing arm type machine of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle; Figure 3 It is a schematic structural diagram of the transmission shaft and the central shaft of the present invention; Figure 4 It is a structural schematic diagram of the adjusting screw rod and the adjusting plate of the present invention; Figure 5 It is a structural schematic diagram of the sleeve shaft and the reciprocating inclined plate of the present invention; Figure 6 It is a structural schematic diagram of the sliding frame and the lower rotating frame of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure at B in the middle; Figure 8 It is a structural schematic diagram of the follower frame and the lower rotating frame of the present invention; Fig. 9 It is a structural schematic diagram of the sliding frame and the upper rotating frame of the present invention; Fig.10It is a structural schematic diagram of the follower frame of the present invention.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Mounting frame; 2. Transmission shaft; 3. Sliding frame; 4. Central axis; 5. Square guide groove; 6. Upper rotating frame; 7. Follow-up frame; 8. Follow-up spring; 9. Limiting guide column; 10. Lower rotating frame; 11. Reciprocating inclined plate; 12. Semi-conical transmission column; 13. Elastic fastening member; 14. Elastic limiting member; 15. Sleeve shaft; 16. Adjusting screw rod; 17. Adjusting plate; 18. Steering worm gear; 19. Synchronous shaft; 20 , second square shaft; 21, first magnetic seat; 22, tensioning seat; 23, positioning spring; 24, axle; 25, tensioning shaft; 26, first electromagnet; 27, hollow shaft; 28, third shaft; 29, second magnetic seat; 30, limit spring; 31, second electromagnet; 32, feed shaft; 33, transmission worm; 34, gear shaft; 35, power wheel; 36, driving gear; 37, passive gear ring. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] The present invention provides the following preferred embodiments

[0028] like Figure 1-10 As shown, a transmission shaft device for a swing arm type machine includes a mounting frame 1, a transmission shaft 2 is rotatably mounted on the mounting frame 1, a sliding frame 3 that can reciprocate left and right is slidably mounted on the mounting frame 1, a rotatable central shaft 4 is rotatably mounted on the sliding frame 3, the central shaft 4 and the sliding frame 3 are both driven by the transmission shaft 2, and a stroke adjustment component for adjusting the reciprocating stroke of the sliding frame 3 is provided on the mounting frame 1; It also includes a reciprocating inclined plate 11 and a semi-conical transmission column 12 driven by the transmission shaft 2, the semi-conical transmission column 12 is respectively provided with a transmission cone surface and a non-transmission part, the reciprocating inclined plate 11 is transmission-connected with the transmission cone surface, a group of elastic fastening members 13 are installed between the reciprocating inclined plate 11 and the sliding frame 3, a group of elastic limit members 14 are installed between the sliding frame 3 and the mounting frame 1, a sleeve shaft 15 is rotatably installed on the sliding frame 3, a first square groove with a front end opening fixedly provided inside the sleeve shaft 15 and slidingly connected to the transmission shaft 2, a first bevel gear is installed on the sleeve shaft 15 and the center shaft 4, and the two first bevel gears are meshed with each other.

[0029] During operation, the transmission shaft 2 drives the semi-conical transmission column 12 to rotate. When the transmission cone surface of the semi-conical transmission column 12 contacts the reciprocating inclined plate 11, the two are tightly fitted under the action of the elastic fastening member 13, and the transmission cone surface pushes the reciprocating inclined plate 11, so that the sliding frame 3 reciprocates left and right. This solution solves the problem that the swing arm type mechanical transmission shaft device in the prior art is difficult to achieve reciprocating motion. Compared with the prior art, the device can have a reciprocating motion function. During actual use, the lower rotary disk is connected to an external lawn mower, and the reciprocating displacement effect can be achieved through the lower rotary disk. On the one hand, it can effectively improve the cutting coverage of the lawn mower per unit time, and on the other hand, it can make the grass material adhering to the cutting machine vibrate and shake off, thereby maintaining the grass cutting effect of the lawn mower. The elastic clamping member 13 includes a T-shaped clamping rod installed on the reciprocating inclined plate 11 , the T-shaped clamping rod is slidably connected to the sliding frame 3 , and a clamping spring is sleeved on the T-shaped clamping rod and corresponds to the position between the reciprocating inclined plate 11 and the sliding frame 3 .

[0030] The stroke adjustment assembly includes an adjusting screw 16 rotatably connected to the mounting frame 1, the adjusting screw 16 is arranged parallel to the transmission shaft 2, an adjusting plate 17 is transmission-mounted on the adjusting screw 16, the semi-conical transmission column 12 is rotationally mounted on the adjusting plate 17, a second square groove with openings at both ends is fixedly opened inside the semi-conical transmission column 12, a synchronous shaft 19 and a second square shaft 20 are rotationally mounted on the mounting frame 1 respectively, a second bevel gear is installed on the synchronous shaft 19 and the transmission shaft 2, the two second bevel gears are meshed with each other, a toothed synchronous belt is transmission-connected between the synchronous shaft 19 and the second square shaft 20, and the second square shaft 20 is slidably connected to the second square groove.

[0031] When in use, the adjusting screw 16 is rotated to drive the adjusting plate 17 to move, thereby changing the position of the semi-conical transmission column 12. The rotation direction and number of turns of the adjusting screw 16 can accurately control the moving distance of the adjusting plate 17, thereby adjusting the position of the semi-conical transmission column 12. When the position of the semi-conical transmission column 12 changes, the contact point and transmission path between the semi-conical transmission column 12 and the reciprocating inclined plate 11 also change, and the transmission stroke of the reciprocating inclined plate 11 is changed, and finally the reciprocating stroke of the sliding frame 3 is adjusted. By adjusting the reciprocating stroke of the sliding frame 3, the cutting coverage of the mower per unit time and the vibration intensity during cutting can be adjusted; The cross sections of the first square shaft, the first square groove, the second square shaft 20 and the second square groove are all regular hexagons, the central angles of the transmission cone surface and the non-transmission part are all 180°, and the transmission cone surface and the reciprocating inclined plate 11 are fixedly provided with anti-slip teeth.

[0032] The first square shaft, the first square groove, the second square shaft 20 and the second square groove of the regular hexagon can ensure stable transmission between the transmission shaft 2 and the sleeve shaft 15, and between the second square shaft 20 and the semi-conical transmission column 12, and prevent relative rotation; The central angles of the transmission cone and the non-transmission part are both 180°, so that the semi-conical transmission column 12 can regularly contact and disengage with the reciprocating inclined plate 11 during the rotation process, achieving stable reciprocating motion; The anti-skid teeth on the transmission cone surface and the reciprocating inclined plate 11 increase the friction force and ensure the transmission reliability; This solution solves the problems of unstable transmission and low transmission efficiency in the prior art, and improves transmission stability and transmission efficiency compared with the prior art; A square guide groove 5 is provided on the sliding frame 3, an upper rotating frame 6 is rotatably sleeved on the central axis 4, a first magnetically controlled clutch assembly is arranged between the upper rotating frame 6 and the central axis 4, the first magnetically controlled clutch assembly controls whether the central axis 4 and the upper rotating frame 6 are linked or not, a follower frame 7 is slidably connected to the inner wall of the upper rotating frame 6, a group of follower springs 8 are installed between the follower frame 7 and the upper rotating frame 6, a limiting guide column 9 slidably connected to the square guide groove 5 is installed on the follower frame 7, a lower rotating frame 10 is rotatably installed on the follower frame 7, a second magnetically controlled clutch assembly is installed between the lower rotating frame 10 and the central axis 4, the second magnetically controlled clutch assembly controls whether the central axis 4 and the lower rotating frame 10 are linked or not, and a power output assembly is installed on the lower rotating frame 10.

[0033] The first magnetically controlled clutch assembly includes a first magnetic seat 21 and a tensioning seat 22 which are slidably connected to the sliding frame 3. A group of positioning springs 23 which are limited by the sliding frame 3 are installed on the sides of the first magnetic seat 21 and the tensioning seat 22. A wheel axle 24 is rotatably installed on the inner wall of the first magnetic seat 21, and a tensioning shaft 25 is rotatably installed on the inner wall of the tensioning seat 22. A first belt is installed on the central shaft 4 for transmission. The wheel axle 24 and the tensioning shaft 25 are both connected to the first belt for transmission. A second belt is installed on the wheel axle 24 for transmission. A first pulley which is adapted to be connected to the second belt is fixedly provided on the upper rotating frame 6. A first electromagnet 26 is installed on the sliding frame 3 and at a position relative to the first magnetic seat 21.

[0034] When it is necessary to drive the follower frame 7 to rotate in a square trajectory, the first electromagnet 26 is energized to generate magnetism, attracting the first magnetic seat 21, and the second electromagnet 31 is de-energized. The first magnetic seat 21 moves under the action of suction, driving the wheel shaft 24 away from the central axis 4, and tightening the first belt. At this time, the central axis 4 rotates to drive the wheel shaft 24 to rotate through the first belt, and then drives the upper rotating frame 6 to rotate through the second belt, so that the central axis 4 and the upper rotating frame 6 are linked, and the limit guide column 9 cooperates with the square guide groove 5 so that the travel of the follower frame 7 forms a square path when it rotates; When it is necessary to drive the follower frame 7 to rotate in a circular trajectory, the first electromagnet 26 is powered off, the first magnetic seat 21 is reset under the action of the positioning spring 23, the first belt is relaxed, and the central shaft 4 is disengaged from the upper rotating frame 6. This solution solves the problem that the transmission connection method in the prior art is complex and difficult to flexibly control the linkage. Compared with the prior art, the flexible control of the linkage between the central shaft 4 and the upper rotating frame 6 is achieved through electromagnetic control, with a simple structure and easy operation.

[0035] The second magnetically controlled clutch assembly includes a hollow shaft 27 rotatably connected to the upper rotating frame 6, a third bevel gear is installed on the hollow shaft 27 and the central shaft 4, and the two third bevel gears are meshed with each other. A third shaft 28 is rotatably installed on the inner wall of the follower frame 7, and a third groove with openings at both ends and slidably connected to the third shaft 28 is fixedly opened inside the hollow shaft 27. The cross-sections of the third shaft 28 and the third groove are both regular polygons. A second magnetic seat 29 is slidably installed on the follower frame 7, and the second magnetic seat 29 is connected to the follower frame 7. A group of limit springs 30 are installed between them, a second electromagnet 31 arranged relative to the second magnetic seat 29 is fixedly installed on the follower frame 7, a feed shaft 32 is rotatably installed on the second magnetic seat 29, a transmission worm 33 is rotatably installed on the follower frame 7, a steering worm gear 18 is fixedly installed on the lower rotating frame 10, the transmission worm 33 is connected to the steering worm gear 18, a third belt is installed on the third shaft 28, and a second pulley adapted to the third belt drive is installed on the transmission worm 33 and the feed shaft 32.

[0036] When it is necessary to drive the follower frame 7 to rotate in a circular trajectory, the first electromagnet 26 is powered off, and the second electromagnet 31 is powered on. After the second electromagnet 31 is powered on, it attracts the second magnetic seat 29, and the second magnetic seat 29 overcomes the elastic force of the limit spring 30 and moves, driving the feed shaft 32 away from the third shaft 28, so that the third belt is tensioned; At this time, the third shaft 28 rotates to drive the feed shaft 32 and the transmission worm 33 to rotate through the third belt, and the transmission worm 33 is connected to the steering worm wheel 18 on the lower rotating frame 10, driving the lower rotating frame 10 to rotate, realizing the linkage between the central shaft 4 and the lower rotating frame 10, and realizing that the follower frame 7 and the lawn mower can rotate in a circular trajectory; When the second electromagnet 31 is powered off, the second magnetic seat 29 is reset under the action of the limit spring 30, the third belt is relaxed, and the central shaft 4 is disconnected from the lower rotating frame 10; This solution solves the problem of inconvenient transmission control between the follower frame 7 and the lower rotating frame 10 in the prior art. Compared with the prior art, it realizes flexible control of transmission between the follower frame 7 and the lower rotating frame 10 and improves the motion control accuracy of the device.

[0037] The first magnetic seat 21 and the second magnetic seat 29 are both equipped with permanent magnets, and the first belt, the second belt and the third belt are all metal chain belts.

[0038] The first magnetic seat 21 and the second magnetic seat 29 have built-in permanent magnets, which can respond more quickly when the electromagnet is powered on and off, thereby realizing rapid control of the transmission component; The first belt, the second belt and the third belt are made of metal chain belts, which make the belts hard and non-elastic, thus ensuring the reliability of transmission connection; The power output assembly includes a gear shaft 34 and a power wheel disc 35 rotatably connected to the follower frame 7. A third bevel gear is installed on the gear shaft 34 and the third shaft 28. The two third bevel gears are meshed with each other. A driving gear 36 is installed on the gear shaft 34. A passive gear ring 37 transmission-connected to the driving gear 36 is installed on the power wheel disc 35. The power wheel disc 35 is used to provide power to the swing arm mower.

[0039] The gear shaft 34 and the third bevel gear on the third shaft 28 mesh with each other, and the rotation of the third shaft 28 drives the gear shaft 34 to rotate; The driving gear 36 on the gear shaft 34 is connected to the driven ring gear 37 on the power wheel 35, so that the power wheel 35 rotates; the power wheel 35 transmits power to the swing arm mower; This solution solves the problems of unstable power output and low power transmission efficiency in the prior art. Compared with the prior art, it achieves stable power output and improves power transmission efficiency.

[0040] A group of connection holes for connecting with the swing arm mower are formed on the lower rotating frame 10 , a group of installation holes for connecting with the swing arm manipulator are formed on the mounting frame 1 , and a group of flange connection holes are formed on the transmission shaft 2 .

[0041] The connection hole on the lower rotating frame 10 is convenient for connecting with the swing arm lawn mower to achieve power output; The mounting holes on the mounting frame 1 facilitate connection with the swing arm manipulator, so that the device can better adapt to the swing arm manipulator; The flange connection hole on the transmission shaft 2 is convenient for connection with other power sources; This solution solves the problem of inconvenient connection between the device and other equipment in the prior art, and improves the versatility and installation convenience of the device compared to the prior art.

[0042] The axes of the third shaft 28 and the hollow shaft 27 are both perpendicular to the axis of the central shaft 4 , and the rotation axis of the lower rotating frame 10 and the rotation axis of the power wheel 35 are on the same straight line.

[0043] When in use, the axial relationship between the third axis 28 and the middle axis 4 being perpendicular to the central axis ensures the direction and stability of power transmission; The upper rotating frame 6 and the rotation axis of the power wheel 35 are in the same straight line, so that the power transmission is smoother and the energy loss is reduced; This solution solves the problems of unstable direction and large energy loss in the power transmission process in the prior art, and improves the stability and efficiency of power transmission compared to the prior art.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A transmission shaft device for a swing arm type machine, comprising a mounting frame (1), on which a transmission shaft (2) is rotatably mounted, characterized in that: A sliding frame (3) capable of reciprocating left and right is slidably mounted on the mounting frame (1); a rotatable central shaft (4) is rotatably mounted on the sliding frame (3); the central shaft (4) and the sliding frame (3) are both driven by a transmission shaft (2); and a stroke adjustment component for adjusting the reciprocating stroke of the sliding frame (3) is provided on the mounting frame (1); The sliding frame (3) is provided with a square guide groove (5), an upper rotating frame (6) is rotatably sleeved on the central shaft (4), a first magnetically controlled clutch component is provided between the upper rotating frame (6) and the central shaft (4), and the first magnetically controlled clutch component controls whether the central shaft (4) and the upper rotating frame (6) are linked or not; The inner wall of the upper rotating frame (6) is slidably connected to a follower frame (7), a group of follower springs (8) are installed between the follower frame (7) and the upper rotating frame (6), a limit guide column (9) slidably connected to the square guide groove (5) is installed on the follower frame (7), a lower rotating frame (10) is rotatably installed on the follower frame (7), a second magnetically controlled clutch component is installed between the lower rotating frame (10) and the central shaft (4), the second magnetically controlled clutch component controls whether the central shaft (4) and the lower rotating frame (10) are linked, and a power output component is installed on the lower rotating frame (10).

2. A transmission shaft device for a swing arm type machine according to claim 1, characterized in that: The invention also comprises a reciprocating inclined plate (11) and a semi-conical transmission column (12) driven by a transmission shaft (2), wherein a transmission cone surface and a non-transmission portion are respectively arranged on the semi-conical transmission column (12), the reciprocating inclined plate (11) is in transmission connection with the transmission cone surface, a group of elastic fastening members (13) are installed between the reciprocating inclined plate (11) and the sliding frame (3), a group of elastic stop members (14) are installed between the sliding frame (3) and the mounting frame (1), a sleeve shaft (15) is rotatably installed on the sliding frame (3), a first square groove with a front end opening fixedly provided inside the sleeve shaft (15) and slidably connected to the transmission shaft (2), a first bevel gear is installed on each of the sleeve shaft (15) and the central shaft (4), and the two first bevel gears are meshed with each other.

3. A transmission shaft device for a swing arm type machine according to claim 2, characterized in that: The stroke adjustment assembly comprises an adjustment screw (16) rotatably connected to the mounting frame (1), the adjustment screw (16) being arranged parallel to the transmission shaft (2), an adjustment plate (17) being transmission-mounted on the adjustment screw (16), the semi-conical transmission column (12) being rotationally mounted on the adjustment plate (17), a second square groove with two ends of openings being fixedly opened inside the semi-conical transmission column (12), a synchronization shaft (19) and a second square shaft (20) being rotationally mounted on the mounting frame (1) respectively, a second bevel gear being mounted on each of the synchronization shaft (19) and the transmission shaft (2), the two second bevel gears being meshed with each other, a toothed synchronization belt being transmission-connected between the synchronization shaft (19) and the second square shaft (20), and the second square shaft (20) being slidably connected to the second square groove.

4. A transmission shaft device for a swing arm type machine according to claim 3, characterized in that: The cross-sections of the first square shaft, the first square groove, the second square shaft (20) and the second square groove are all regular hexagons, the central angles of the transmission cone surface and the non-transmission part are all 180°, and the transmission cone surface and the reciprocating inclined plate (11) are fixedly provided with anti-slip tooth patterns.

5. The transmission shaft device for a swing arm type machine according to claim 1, characterized in that: The first magnetically controlled clutch assembly comprises a first magnetic seat (21) and a tensioning seat (22) which are slidably connected to the sliding frame (3); a group of positioning springs (23) which are limited by the sliding frame (3) are installed on the side surfaces of the first magnetic seat (21) and the tensioning seat (22); a wheel shaft (24) is rotatably installed on the inner wall of the first magnetic seat (21); a tensioning shaft (25) is rotatably installed on the inner wall of the tensioning seat (22); a first belt is installed on the central shaft (4); the wheel shaft (24) and the tensioning shaft (25) are both connected to the first belt; a second belt is installed on the wheel shaft (24); a first pulley which is adapted to be connected to the second belt is fixedly provided on the upper rotating frame (6); and a first electromagnet (26) is installed on the sliding frame (3) at a position relative to the first magnetic seat (21).

6. A transmission shaft device for a swing arm type machine according to claim 5, characterized in that: The second magnetically controlled clutch assembly comprises a hollow shaft (27) rotatably connected to the upper rotating frame (6); a third bevel gear is mounted on both the hollow shaft (27) and the central shaft (4); the two third bevel gears are meshed with each other; a third shaft (28) is rotatably mounted on the inner wall of the follower frame (7); a third groove with openings at both ends and slidably connected to the third shaft (28) is fixedly provided inside the hollow shaft (27); the cross sections of the third shaft (28) and the third groove are both regular polygons; a second magnetic seat (29) is slidably mounted on the follower frame (7); the second magnetic seat (29) and the follower frame (7) are connected to each other. A group of limit springs (30) are installed between the two ends of the rotating frame (10); a second electromagnet (31) arranged relative to the second magnetic seat (29) is fixedly installed on the follower frame (7); a feed shaft (32) is rotatably installed on the second magnetic seat (29); a transmission worm (33) is rotatably installed on the follower frame (7); a steering worm gear (18) is fixedly installed on the lower rotating frame (10); the transmission worm gear (33) is transmission-connected to the steering worm gear (18); a third belt is transmission-installed on the third shaft (28); and a second pulley adapted to the third belt transmission is installed on both the transmission worm gear (33) and the feed shaft (32).

7. A transmission shaft device for a swing arm type machine according to claim 6, characterized in that: The first magnetic seat (21) and the second magnetic seat (29) both have permanent magnets built into them, and the first belt, the second belt and the third belt are all metal chain belts.

8. The transmission shaft device for a swing arm type machine according to claim 1, characterized in that: The power output assembly comprises a gear shaft (34) and a power wheel disc (35) rotatably connected to a follower frame (7); a third bevel gear is mounted on the gear shaft (34) and a third shaft (28); the two third bevel gears are meshed with each other; a driving gear (36) is mounted on the gear shaft (34); a driven gear ring (37) drivingly connected to the driving gear (36) is mounted on the power wheel disc (35); the power wheel disc (35) is used to provide power to the swing arm lawn mower.

9. The transmission shaft device for a swing arm type machine according to claim 1, characterized in that: The lower rotating frame (10) is provided with a group of connection holes for connecting to a swing arm mower, the mounting frame (1) is provided with a group of mounting holes for connecting to a swing arm manipulator, and the transmission shaft (2) is provided with a group of flange connection holes.

10. The transmission shaft device for a swing arm type machine according to claim 6, characterized in that: The axes of the third shaft (28) and the hollow shaft (27) are both perpendicular to the axis of the central shaft (4), and the rotation axis of the lower rotating frame (10) and the rotation axis of the power wheel (35) are on the same straight line.

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