CN109699293B

CN109699293B - Fruit picking device

Info

Publication number: CN109699293B
Application number: CN201910036070.5A
Authority: CN
Inventors: 李锦波; 应伟军
Original assignee: Jiyang College of Zhejiang A&F University
Current assignee: Jiyang College of Zhejiang A&F University
Priority date: 2019-01-15
Filing date: 2019-01-15
Publication date: 2020-07-14
Anticipated expiration: 2039-01-15
Also published as: CN109699293A

Abstract

The invention discloses a fruit picking device, which comprises a knife rest, wherein the knife rest is provided with a cavity, the knife rest comprises a side wall, a first opening for fruit to enter the cavity is arranged on the side wall, a clamping device for clamping a fruit handle of the fruit is arranged in the cavity, the clamping device comprises a rotary motor, a screw rod, first comb teeth, second comb teeth and a limiting rod, the rotary motor is arranged on one surface of the side wall facing the cavity, the peripheral surface of the screw rod faces the opening direction of the first opening, one end of the screw rod is connected with the output end of the rotary motor, a first thread and a second thread with opposite spiral directions are respectively arranged on the peripheral wall of the screw rod, one section of the screw rod provided with the first thread is connected with the first comb teeth, one section of the screw rod provided with the second thread is connected with the second comb teeth, the limiting rod penetrates through the first comb teeth and the second comb, the fruit handle is fixed and then cut, so that the impact force on the fruit is reduced, and the quality of the picked fruit is improved.

Description

Fruit picking device

Technical Field

The invention relates to the field of agricultural picking instruments, in particular to a fruit picking device.

Background

China is a world fruit production big country, from 1993, the fruit yield and cultivation area of China exceed those of India, Brazil and the United states, and are located at the 1 st position in the world, and fruit farmers start busy picking every season when the fruits are ripe.

Initially, fruit growers picked fruit by pinching off the stem with the fingers, or by holding the fruit with one hand and cutting off the stem with a pair of scissors, until now, there are various types of picking devices available on the market that operate by automatic cutting.

In the current picking device, a clamping device special for fixing fruit stalks of fruits is not designed, and in the cutting process of the blades, the blades and the fruit stalks generate impact force when being cut, so that the fruits in the picking device easily collide with the inner wall of the device, the surfaces of the fruits are damaged, the quality of the fruits is seriously reduced, and the loss is brought.

Disclosure of Invention

In view of the defects in the prior art, the invention aims to provide a fruit picking device, which fixes the stem of the fruit to be cut when the fruit is cut.

In order to achieve the purpose, the invention provides the following technical scheme: comprises a knife rest, the knife rest is provided with a cavity, the knife rest comprises a side wall, a first opening for fruit to enter the cavity is arranged on the side wall, a clamping device for clamping a fruit handle of the fruit is arranged in the cavity, the clamping device comprises a rotating motor, a screw rod, first comb teeth, second comb teeth and a limiting rod, the rotating motor is arranged on one side of the side wall facing the cavity, the outer peripheral surface of the screw rod is arranged towards the opening direction of the first opening, one end of the screw rod is connected with the output end of the rotating motor, a first thread and a second thread with opposite spiral directions are respectively arranged on the outer peripheral wall of the screw rod, one section of the screw rod provided with the first thread is connected with the first comb teeth, one section of the screw rod provided with the second thread is connected with the second comb teeth, the limiting rod passes through the first comb teeth and the second comb teeth, and, parallel with the screw rod, start when actuating mechanism, when driving the screw rod and rotate, first broach and second broach are close to each other along the gag lever post and are removed, the carpopodium of centre gripping fruit, and when the screw rod antiport, first broach and second broach are kept away from each other along the gag lever post and are removed, loosen the carpopodium of fruit and reset, still be provided with the cutting device who is used for cutting the carpopodium of fruit in the cavity.

As a further improvement of the present invention, the cutting device includes a first gear, a second gear, a first connecting rod, a first bevel gear, a second connecting rod, a second bevel gear, a blade, and a contact rod, the first gear is coaxially and threadedly connected to a section of the screw rod having a first thread, one end of the first connecting rod is rotatably disposed on a side of the sidewall facing the cavity and is parallel to the limiting rod, an axis of the second gear is fixedly sleeved on the outer peripheral wall of the first connecting rod, the second gear is used for meshing with the first gear, the axis of the first bevel gear is connected to an end of the first connecting rod away from the sidewall, the knife rest includes a top plate, a second opening for accommodating a fruit handle of the fruit and communicating with the first opening is disposed on the top plate, one end of the second connecting rod is rotatably disposed on a side of the top plate facing the cavity, and the other end extends toward the first bevel gear, the second bevel gear is connected with one end of the second connecting rod, which is far away from the top plate, the second bevel gear is used for being meshed with the first bevel gear to rotate, the blade is arranged on the peripheral wall of the second connecting rod, the rotation travel range of the blade comprises a clamping position where the first comb teeth and the second comb teeth are close to each other, one side of the limiting rod, which faces the screw rod, is provided with a limiting groove, the touch rod is arranged on one side of the first gear, which is far away from the first comb teeth, the touch rod slides in the limiting groove in a limiting way, the limiting groove is provided with a through groove which is communicated in the up-down direction at one end close to the second gear, when the rotating motor is started, the first comb teeth and the second comb teeth move close to each other along the limiting rod, meanwhile, the first gear moves towards the first comb teeth, and when the touch rod on the first gear moves to the through groove along the limiting groove, the, the touch rod is separated from the through groove, the first gear and the second gear are meshed and rotate to drive the first bevel gear and the second bevel gear to be meshed and rotate, and the blade is driven to rotate to cut the fruit stem.

As a further improvement of the invention, a selective limiting component is further arranged in the through groove, the selective limiting component limits the unidirectional rotation of the touch rod, the selective limiting component is arranged above or below the through groove corresponding to the limiting groove, the selective limiting component comprises a touch plate, a spring and a telescopic rod, one end of the telescopic rod is connected to one through groove, the other end of the telescopic rod is connected with the touch plate, one end of the spring is connected to the through groove, the other end of the spring is connected to one surface of the touch plate close to the through groove, one surface of the touch plate far away from the limiting groove is provided with an inclined surface, when the touch rod rotates in the through groove to be separated from the limiting groove, the touch rod rotates to be in contact with the inclined surface of the touch plate, the spring and the telescopic rod are compressed, the touch rod enters the limiting groove, and when the touch rod reversely rotates to.

As a further improvement of the invention, the knife rest comprises a bottom plate, a buffer net is detachably arranged on the peripheral wall of the bottom plate, and a third opening for the cut fruit to enter the buffer net is arranged on the bottom plate.

As a further improvement of the invention, a holding rod is arranged on one surface of the side wall opposite to the cavity, the holding rod comprises an inner rod, an outer rod and a bolt, a containing groove is arranged at one end of the outer rod, one end of the inner rod is connected to the side wall, the other end of the inner rod is positioned in the containing groove, a first threaded hole is arranged on the peripheral wall of the outer rod, a plurality of second threaded holes are arranged on the peripheral wall of the inner rod, the bolt is in threaded connection with the first threaded hole and one of the second threaded holes, and a button for starting a rotating motor is arranged on the peripheral wall of the outer rod.

The invention has the beneficial effects that: under initial condition, first broach and second broach separate, when needs pluck fruit, through the first opening on the lateral wall, make in the cavity of the knife rest that fruit got into, through opening the rotating electrical machines among the cutting device, make the screw rod rotate, through setting up the gag lever post, make first broach and second broach be close to each other and remove, the distance between first broach and the second broach reduces, until the carpopodium of centre gripping fruit, cutting device cuts the carpopodium of the fruit of first broach and second broach top again. According to the fruit picker, the first opening is formed in the side wall of the knife rest, so that the application range of the fruit picker can be widened, and some fruits with larger volumes can be picked; through setting up clamping device for cutting device has reduced the impact force that fruit received at the in-process of the stalk cutting with fruit, and fruit is difficult for colliding with the lateral wall of knife rest, has improved the quality of picking the fruit that gets off.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention with the top plate removed;

FIG. 3 is a top view of the present invention with the top plate blade removed in a rotated condition;

FIG. 4 is an enlarged front elevational view of the tool holder of the present invention;

FIG. 5 is a top view of the present invention;

FIG. 6 is a cross-sectional view of a limiting groove and a through groove in a limiting rod;

FIG. 7 is a side cross-sectional view of a stop groove in the stop lever of the present invention;

FIG. 8 is a side cross-sectional view of a through slot in a stop bar of the present invention;

FIG. 9 is an enlarged cross-sectional view of the grip of the present invention.

Reference numerals: 1. a tool holder; 10. a cavity; 11. a side wall; 110. a first opening; 12. a top plate; 120. a second opening; 13. a base plate; 130. a third opening; 2. a clamping device; 21. a screw; 22. a rotating electric machine; 24. a limiting rod; 240. a limiting groove; 2400. a through groove; 25. a first comb tooth; 26. a second comb tooth; 211. a first thread; 222. a second thread; 3. a cutting device; 31. a first gear; 32. a second gear; 33. a first bevel gear; 34. a second bevel gear; 35. a first connecting rod; 36. a second connecting rod; 37. a blade; 38. a touch bar; 4. selecting a limiting component; 41. a touch plate; 42. a spring; 43. a telescopic rod; 44. a bevel; 5. a buffer net; 6. a holding rod; 61. an inner rod; 62. an outer rod; 620. accommodating grooves; 63. a button; 64. a first threaded hole; 65. a second threaded hole; 67. and (4) bolts.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals.

Referring to fig. 1 to 9, the fruit picking device of the present embodiment includes a knife rest 1, the knife rest 1 is provided with a cavity 10, the knife rest 1 includes a side wall 11, a first opening 110 for fruit to enter the cavity 10 is provided on the side wall 11, a clamping device 2 for clamping a fruit stem of the fruit is provided in the cavity 10, the clamping device 2 includes a rotating motor 22, a screw rod 21, a first comb tooth 25, a second comb tooth 26 and a limiting rod 24, the rotating motor 22 is provided on a surface of the side wall 11 facing the cavity 10, an outer circumferential surface of the screw rod 21 is provided toward an opening direction of the first opening 110, one end of the screw rod 21 is connected to an output end of the rotating motor 22, first threads 211 and second threads 222 with opposite spiral directions are respectively provided on the outer circumferential surface of the screw rod 21, a section of the screw rod 21 provided with first threads 211 is connected to the first comb tooth 25, the screw rod 21 is provided with one section threaded connection second broach 26 of second screw thread 222, gag lever post 24 passes first broach 25 and second broach 26, and both ends are connected on lateral wall 11, and is parallel with screw rod 21, starts as actuating mechanism, when driving screw rod 21 and rotate, first broach 25 and second broach 26 are close to the removal each other along gag lever post 24, the fruit handle of centre gripping fruit, when screw rod 21 antiport, first broach 25 and second broach 26 are kept away from the removal each other along gag lever post 24, loosen the fruit handle of fruit and reset, still be provided with the cutting device 3 that is used for cutting the fruit handle in the cavity 10.

Through the scheme: in the initial state, first broach 25 and second broach 26 separate, when needing to pick fruit, through first opening 110 on lateral wall 11 for in the cavity 10 of knife rest 1 that the fruit got into, through opening the rotating electrical machines 22 among the cutting device, make screw rod 21 rotate, through setting up gag lever post 24, make first broach 25 and second broach 26 be close to each other and move, the distance between first broach 25 and the second broach 26 reduces, until the fruit stalk of centre gripping fruit, cutting device 3 cuts the fruit stalk of the fruit above first broach 25 and the second broach 26 again. In the invention, the first opening 110 is arranged on the side wall 11 of the knife rest 1, so that the application range of the device can be improved, and some fruits with larger volume can be picked; through setting up clamping device 2 for cutting device 3 has reduced the impact force that fruit received at the in-process of the stalk cutting with fruit, and fruit is difficult for colliding with the lateral wall 11 of knife rest 1, has improved the quality of the fruit of picking down.

As a modified specific embodiment, the cutting device 3 includes a first gear 31, a second gear 32, a first connecting rod 35, a first bevel gear 33, a second connecting rod 36, a second bevel gear 34, a blade 37 and a touch rod 38, the coaxial screw thread of the first gear 31 is connected to a section of the screw 21 provided with the first screw thread 211, one end of the first connecting rod 35 is rotatably disposed on a surface of the sidewall 11 facing the cavity 10 and is parallel to the limiting rod 24, the axial center of the second gear 32 is fixedly sleeved on the peripheral wall of the first connecting rod 35, the second gear 32 is configured to engage with the first gear 31, the axial center of the first bevel gear 33 is connected to an end of the first connecting rod 35 away from the sidewall 11, the knife rest 1 includes a top plate 12, the top plate 12 is provided with a second opening 120 configured to receive a fruit stalk of a fruit and communicate with the first opening 110, one end of the second connecting rod 36 is rotatably disposed on one side of the top plate 12 facing the cavity 10, the other end extends toward the first bevel gear 33, the second bevel gear 34 is axially connected to one end of the second connecting rod 36 away from the top plate 12, the second bevel gear 34 is configured to engage with the first bevel gear 33 for rotation, the blade 37 is disposed on the outer peripheral wall of the second connecting rod 36, the rotation stroke range of the blade 37 includes a position where the first comb tooth 25 and the second comb tooth 26 are close to each other, a limiting groove 240 is disposed on one side of the limiting rod 24 facing the screw 21, the tactile rod 38 is disposed on one side of the first gear 31 away from the first comb tooth 25, the tactile rod 38 is limited to slide in the limiting groove 240, the limiting groove 240 is disposed with a through groove 2400 running through in the up and down direction at one end close to the second gear 32, when the rotary motor 22 is started, the first comb tooth 25 and the second comb tooth 26 move close to each other along the limiting rod 24, meanwhile, the first gear 31 moves towards the first comb teeth 25, when the contact rod 38 on the first gear 31 moves to the through groove 2400 along the limiting groove 240, the first gear 31 is meshed with the second gear 32, the contact rod 38 is separated from the through groove 2400, the first gear 31 is meshed with the second gear 32 to drive the first bevel gear 33 and the second bevel gear 34 to be meshed and rotated, and the blade 37 is driven to rotate to cut fruit stalks.

Through the technical scheme: when fruits need to be picked, the fruit stems of the fruits enter the cavity 10 of the knife rest 1 through the first opening 110 on the side wall 11 and the second opening 120 on the top plate 12, when the rotating motor 22 is started, the first comb teeth 25 and the second comb teeth 26 move close to each other along the limiting rod 24, meanwhile, the first gear 31 also moves in the same direction with the first comb teeth 25, when the contact rod 38 on the first comb teeth 25 moves to the through groove 2400 along the limiting groove 240, the first gear 31 is engaged with the second gear 32, the contact rod 38 is separated from the through groove 2400, the first gear 31 is engaged with the second gear 32 to rotate, the first bevel gear 33 is engaged with the second bevel gear 34 to rotate, the blade 37 rotates, when the fruit stems are just clamped by the first comb teeth 25 and the second comb teeth 26, the blade 37 rotates to cut the fruit stems of the fruits, in the invention, the clamping device 2 and the cutting device 3 are sequentially triggered, the work efficiency is improved through the cooperation work.

As a modified specific embodiment, a selective limiting component 4 is further disposed in the through slot 2400, the selective limiting component 4 limits the unidirectional rotation of the touch rod 38, the selective limiting component 4 is disposed above or below the through slot 2400 corresponding to the limiting slot 240, the selective limiting component 4 includes a touch plate 41, a spring 42 and a telescopic rod 43, one end of the telescopic rod 43 is connected to one through slot 2400, the other end of the telescopic rod is connected to the touch plate 41, one end of the spring 42 is connected to the through slot 2400, the other end of the spring is connected to a side of the touch plate 41 close to the through slot 2400, a slope 44 is disposed on a side of the touch plate 41 far from the limiting slot 240, when the touch rod 38 rotates in the through slot 2400 to separate from the limiting slot 240, the touch rod rotates to abut against the slope 44 of the touch plate 41, the

springs

42 and 43 compress, the touch rod 38 enters the limiting slot 240, and when the touch rod 38 reversely rotates to enter the through slot 2400, the abutting plate 41 restricts the abutting rod 38 from coming out of the through groove 2400.

Through the technical scheme: in this embodiment, limiting assembly sets up the below position that corresponds limiting groove 240 in logical groove 2400, after conflict pole 38 rotated in logical groove 2400 and breaks away from limiting groove 240, rotate to contradict with conflict board 41's inclined plane 44, spring 42 and telescopic link 43 compress, conflict pole 38 gets into limiting groove 240, when conflict pole 38 counter-rotation gets into logical groove 2400, conflict pole 38 contradicts with the one side that conflict board 41 was not provided with inclined plane 44, conflict board 41 restriction conflict pole 38 deviates from logical groove 2400. According to the invention, by arranging the selection limiting assembly 4, when next picking is carried out, only the output end of the rotating motor 22 needs to rotate reversely, the first comb teeth 25 are separated from the second comb teeth 26, the first gear 31 is separated from the second gear 32, and the blade 37 can stop rotating, so that the automatic degree is high, and the use is convenient.

As a modified specific embodiment, the knife rest 1 comprises a bottom plate 13, a buffer net 5 is detachably arranged on the peripheral wall of the bottom plate 13, and a third opening 130 for the cut fruit to enter the buffer net 5 is arranged on the bottom plate 13.

Through the technical scheme: according to the fruit picking device, the buffer net 5 is arranged, so that the fruits can fall into the buffer net 5 through the third opening 130 after being cut, the descending speed of the fruits is greatly reduced by arranging the buffer net 5, the fruit picking device can also be used for temporarily storing the fruits, the storage space of the device is increased, and the fruits can be picked conveniently by cutting for multiple times at one time.

As a modified embodiment, be provided with the holding rod 6 on the one side of cavity 10 dorsad of lateral wall 11, holding rod 6 includes interior pole 61, outer pole 62 and bolt 67, outer pole 62 is served and is provided with holding tank 620, interior pole 61 one end is connected on lateral wall 11, and the other end is located holding tank 620, be provided with first screw hole 64 on the outer pole 62 periphery wall, be provided with a plurality of second screw hole 65 on the interior pole 61 periphery wall, first screw hole 64 of bolt 67 threaded connection and one of them second screw hole 65, be provided with the button 63 that is used for opening rotating electrical machines 22 on the outer pole 62 periphery wall.

Through the technical scheme: when fruits with higher positions need to be picked, the bolt 67 on the holding rod 6 is unscrewed, the fixed state of the inner rod 61 and the outer rod 62 is released, the positions of the outer rod 62 and the inner rod 61 are adjusted, the length of the holding rod 6 is enough to enable the fruits to enter the cavity 10 of the knife rest 1, the bolt 67 is connected in the first threaded hole 64 of the outer rod 62 and the next second threaded hole 65 of the inner rod 61 in a threaded mode again, the button 63 on the outer rod 62 is pressed, the rotating motor 22 is started, and the picking device automatically clamps and cuts.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A fruit picking device is characterized in that: comprises a knife rest (1), the knife rest (1) is provided with a cavity (10), the knife rest (1) comprises a side wall (11), a first opening (110) used for fruit to enter the cavity (10) is arranged on the side wall (11), a clamping device (2) used for clamping a fruit handle of the fruit is arranged in the cavity (10), the clamping device (2) comprises a rotating motor (22), a screw rod (21), first comb teeth (25), second comb teeth (26) and a limiting rod (24), the rotating motor (22) is arranged on one surface of the side wall (11) facing the cavity (10), the peripheral surface of the screw rod (21) is arranged towards the opening direction of the first opening (110), one end of the screw rod (21) is connected to the output end of the rotating motor (22), and a first thread (211) and a second thread (222) with opposite spiral directions are respectively arranged on the peripheral wall of the screw rod (21), the cutting device is characterized in that one section of the screw (21) provided with a first thread (211) is in threaded connection with a first comb tooth (25), one section of the screw (21) provided with a second thread (222) is in threaded connection with a second comb tooth (26), the limiting rod (24) penetrates through the first comb tooth (25) and the second comb tooth (26), two ends of the limiting rod (24) are connected to the side wall (11) and are parallel to the screw (21), when the driving mechanism is started to drive the screw (21) to rotate, the first comb tooth (25) and the second comb tooth (26) move close to each other along the limiting rod (24) to clamp a fruit handle of a fruit, when the screw (21) rotates reversely, the first comb tooth (25) and the second comb tooth (26) move away from each other along the limiting rod (24) to loosen and reset the fruit handle of the fruit, and a cutting device (3) for cutting the fruit handle of the fruit is further arranged in the cavity (;

the cutting device (3) comprises a first gear (31), a second gear (32), a first connecting rod (35), a first bevel gear (33), a second connecting rod (36), a second bevel gear (34), a blade (37) and a touch rod (38), wherein the first gear (31) is coaxially and threadedly connected to one section of a screw (21) provided with a first thread (211), one end of the first connecting rod (35) is rotatably arranged on one surface of the side wall (11) facing the cavity (10) and is parallel to the limiting rod (24), the axis of the second gear (32) is fixedly sleeved on the peripheral wall of the first connecting rod (35), the second gear (32) is used for being meshed with the first gear (31), the axis of the first bevel gear (33) is connected to one end of the first connecting rod (35) far away from the side wall (11), the tool rest (1) comprises a top plate (12), the fruit handle pushing device is characterized in that a second opening (120) used for containing a fruit handle of a fruit and communicated with the first opening (110) is formed in the top plate (12), one end of a second connecting rod (36) is rotatably arranged on one surface, facing the cavity (10), of the top plate (12), the other end of the second connecting rod extends towards a first bevel gear (33), the axis of the second bevel gear (34) is connected to one end, far away from the top plate (12), of the second connecting rod (36), the second bevel gear (34) is used for being meshed with the first bevel gear (33) to rotate, the blade (37) is arranged on the outer peripheral wall of the second connecting rod (36), the rotating stroke range of the blade (37) comprises a first comb tooth (25) and a second comb tooth (26) which are close to a clamping position, a limiting groove (240) is formed in one side, facing the screw rod (21), of the limiting rod (24), and the abutting rod (38) is arranged on one surface, far away from the first comb tooth (25), of the, the utility model discloses a fruit handle cutting device, including limiting groove (240), first broach (25) and second broach (26) are close to each other and are removed, when rotating electrical machines (22) start, first broach (25) and second broach (26) are close to each other and are removed along limiting rod (24) in limiting groove (240) that the spacing slides in limiting groove (240), and simultaneously, first gear (31) remove to first broach (25), when the feeler lever (38) on first gear (31) remove to logical groove (2400) along limiting groove (240), first gear (31) and second gear (32) meshing, feeler lever (38) deviate from logical groove (2400), first gear (31) and second gear (32) meshing rotation, drive first bevel gear (33) and second bevel gear (34) meshing rotation, drive blade (37) rotation cutting fruit handle.

2. A fruit picking apparatus as claimed in claim 1, in which: the contact device is characterized in that a selective limiting component (4) is further arranged in the through groove (2400), the selective limiting component (4) limits the one-way rotation of the contact rod (38), the selective limiting component (4) is arranged above or below the corresponding limiting groove (240) of the through groove (2400), the selective limiting component (4) comprises a contact plate (41), a spring (42) and a telescopic rod (43), one end of the telescopic rod (43) is connected to one through groove (2400), the other end of the telescopic rod is connected with the contact plate (41), one end of the spring (42) is connected to the through groove (2400), the other end of the spring (42) is connected to one surface, close to the through groove (2400), of the contact plate (41), an inclined surface (44) is arranged on one surface, far away from the limiting groove (240), of the contact plate (41), and after the contact rod (38) rotates to be separated from the limiting groove (240) in the through groove (2400), the contact rod rotates to be abutted against the inclined surface, spring (42) and telescopic link (43) compression, and feeler lever (38) get into spacing groove (240), and when feeler lever (38) antiport gets into logical groove (2400), conflict board (41) restriction is deviate from in logical groove (2400) to feeler lever (38).

3. A fruit picking apparatus as claimed in claim 1, in which: knife rest (1) includes bottom plate (13), can dismantle on bottom plate (13) periphery wall and be provided with buffering net (5), be provided with third opening (130) that the fruit that is used for after the cutting got into buffering net (5) on bottom plate (13).

4. A fruit picking apparatus as claimed in claim 1, in which: be provided with holding rod (6) in the one side of lateral wall (11) cavity (10) dorsad, holding rod (6) are including interior pole (61), outer pole (62) and bolt (67), outer pole (62) serve and be provided with holding tank (620), interior pole (61) one end is connected on lateral wall (11), and the other end is located holding tank (620), be provided with first screw hole (64) on outer pole (62) periphery wall, be provided with a plurality of second screw hole (65) on interior pole (61) periphery wall, first screw hole of bolt (67) threaded connection (64) and one of them second screw hole (65), be provided with button (63) that are used for opening rotating electrical machines (22) on outer pole (62) periphery wall.