CN214430064U

CN214430064U - Inoculation device for identifying resistance of corn soil-borne diseases

Info

Publication number: CN214430064U
Application number: CN202120535948.2U
Authority: CN
Inventors: 苏前富; 贾娇; 张伟; 孟玲敏; 白雪; 吴宏斌; 孙嵬; 高月波
Original assignee: Jilin Academy of Agricultural Sciences
Current assignee: Jilin Academy of Agricultural Sciences
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-10-22
Anticipated expiration: 2031-03-15

Abstract

The utility model discloses a maize soil-borne disease resistance appraisal inoculation device, include: the frame, the lower part of frame sets up rotatable wheel subassembly, and the rear side of wheel subassembly sets up the glassware down, and the telescopic unloading pipe is connected to the first feed opening of glassware down, and the side of wheel subassembly sets up the switching device who moves along with the wheel subassembly, and when the wheel subassembly rotated preset angle, the glassware was exported the material to the unloading pipe down, and switching device drives the unloading pipe simultaneously and inserts in the soil. When promoting maize soil-borne disease resistance appraisal inoculation device, the wheel subassembly can rotate forward to drive the switching device activity, switching device drives glassware down and exports the material to the unloading pipe, drives the unloading pipe simultaneously and inserts in the soil, can put into the soil simultaneously germ and seed, need not the manual work and sow one by one, and along with the wheel subassembly rotates, sustainable put into the different positions of soil simultaneously with seed and germ, promoted appraisal efficiency, reduced artifical input cost.

Description

Inoculation device for identifying resistance of corn soil-borne diseases

Technical Field

The utility model relates to a disease-resistant research technical field of maize, more specifically say, relate to a maize soil-borne disease resistance appraisal inoculation device.

Background

The corn head smut, root rot and other diseases are important soil-borne diseases on corn, the two diseases are commonly generated in northeast spring corn regions, although pathogenic bacteria are different, the two diseases are transmitted through soil, and more varieties are listed on the market along with variety approval channels such as national approval, provincial approval, green channels, associations and the like, so that the resistance of the final variety is controlled, the huge loss caused by outbreak of the diseases is reduced, resistance identification needs to be carried out on the existing new variety or the listed variety according to the regional layout, the resistance level of the different regional varieties to the soil-borne diseases such as the head smut, the root rot and the like is determined, and the disease-resistant variety is screened, so that the aim of safe production is fulfilled.

The existing identification mode is manual operation, the manual demand is increased along with the increasing of the tested varieties, the efficiency is not high, and the cost is increased.

In summary, how to improve the identification efficiency and reduce the cost is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a maize soil-borne disease resistance appraises inoculation device promotes this maize soil-borne disease resistance appraises inoculation device, can sow seed and germ simultaneously at equal interval, improves seeding efficiency, and is single can operate, the cost is reduced.

In order to achieve the above object, the present invention provides the following technical solutions:

an inoculation device for identifying resistance of corn soil-borne diseases, comprising: the frame, the lower part of frame sets up rotatable wheel subassembly, the rear side of wheel subassembly sets up down the glassware, the telescopic unloading pipe is connected to the first feed opening of unloading, the side of wheel subassembly sets up along with the switching device that the wheel subassembly moved, when the wheel subassembly rotates and predetermines the angle, the unloading ware to export the material in the unloading pipe, simultaneously switching device drives the unloading pipe inserts in the soil.

Preferably, the blanking device comprises a first material box, a first feeding hole is formed in the upper portion of the first material box, the first blanking hole is formed in the bottom of the first material box, and the first material box is connected with the frame;

the inside of first workbin set up the axis with the parallel fungus thing dish of wheel subassembly and kind of dish, the fungus thing dish with kind of dish sets up side by side, the outer peripheral face of fungus thing dish sets up first silo, the outer peripheral face of dish set up with the second silo that first silo corresponds, wheel subassembly passes through transmission synchronous drive fungus thing dish with kind of dish, when wheel subassembly rotates the first angle of predetermineeing, first silo with the second silo moves towards simultaneously first feed inlet, when wheel subassembly rotates the second and predetermines the angle, first silo with the second silo moves towards simultaneously first feed inlet.

Preferably, the glassware includes the second workbin down, the second workbin set up in the upper portion of first workbin, the top of second workbin sets up the second feed inlet, the bottom of second workbin sets up the second feed opening, set up the wall in the second workbin, the wall set up in second feed opening top, one side of wall is the fungus thing mixing box, and the opposite side is the kind workbin, the fungus thing mixing box the second feed opening is just right the outer peripheral face of fungus thing dish, the kind workbin the second feed opening is just right the outer peripheral face of dish.

Preferably, transmission include the driving gear and with the driven gear of driving gear homogeneous size, the driving gear pass through the chain with driven gear connects the transmission, wheel subassembly includes wheel and axletree, the axletree with connected to the frame, the driving gear with wheel coaxial coupling and synchronous rotation, first workbin side sets up and inserts the inside driven shaft of first workbin, the driven shaft respectively with fungus dish the dish is connected to the dish, is in the first workbin outside the driven shaft with driven gear connects.

Preferably, the frame includes two handles, and two the lower extreme of handle is connected respectively in the both ends of axletree, two the handle sets up the fixed silk respectively, two the fixed silk connect respectively in the both sides of first workbin.

Preferably, the switching device comprises an adjusting cover connected with the frame, the discharging pipe comprises a first discharging pipe and a second discharging pipe, the upper end of the first discharging pipe is connected to the first discharging port, the second discharging pipe is movably sleeved at the lower part of the first discharging pipe, and the second discharging pipe is arranged in the adjusting cover;

the side surface of the wheel is provided with a cam which rotates synchronously with the wheel, the frame is provided with an elastic switch which can move up and down, the periphery of the cam is attached to the upper part of the elastic switch, and the elastic switch supports the second material pipe; the adjusting cover is internally provided with a first elastic piece in a compressed state, one end of the first elastic piece is connected with the upper part of the adjusting cover, the other end of the first elastic piece is connected with the second material pipe, and the elastic force of the first elastic piece is smaller than that of the elastic switch.

Preferably, the elastic switch comprises a transmission connecting rod, the middle of the transmission connecting rod is connected with the frame through a second elastic piece, the rear end of the transmission connecting rod supports the second material pipe, the cam is attached to the upper portion of the front end of the transmission connecting rod, and the second elastic piece is in a stretching state.

Preferably, a protrusion is arranged on the side surface of the second material pipe, the first elastic piece is pressed on the upper surface of the protrusion, and the transmission connecting rod supports the lower surface of the protrusion.

When promoting the maize soil-borne disease resistance appraisal inoculation device that this application provided, wheel subassembly can rotate forward, in order to drive the switching device activity, switching device drives unloading ware and exports the material to the unloading pipe, drive the unloading pipe simultaneously and insert in the soil, in order to input the material in the unloading ware to the soil, when the material includes germ and seed, can put into simultaneously germ and seed simultaneously in the soil, in order to carry out the disease resistance test to corresponding seed, need not artifical seeding one by one, every promote maize soil-borne disease resistance appraisal inoculation device forward, when making wheel subassembly rotate preset angle, put into the soil germ with seed and germ simultaneously, sustainable different positions of soil are put into simultaneously with seed and germ, appraisal efficiency has been promoted, the artifical input cost has been reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an axonometric view of an inoculation device for identifying resistance of soil-borne diseases of corn provided by the utility model;

FIG. 2 is a top view of the inoculation apparatus for identifying resistance of soil-borne diseases of corn provided by the present invention;

FIG. 3 is an isometric view of one side of a transmission device of the inoculation device for identifying resistance to soil-borne diseases of corn provided by the present invention;

FIG. 4 is the internal structure view of the first material box of the inoculation device for identifying resistance of soil-borne diseases of corn provided by the utility model.

In FIGS. 1-4:

the automatic feeding device comprises a handle 1, a fungus mixing box 2, a fungus mixing box 3, a seed box 4, a chain 5, wheels 6, a cam 7, a transmission connecting rod 8, an axle 9, a frame 10, a second material pipe 11, a first elastic part 12, an adjusting cover 13, a first material pipe 14, a fixed wire 15, a second elastic part 15, a driven shaft 16, a driven gear 17, a driving gear 18, a first material groove 19, a fungus plate 20, a fungus plate 21, a second material groove 22 and a first material box 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a maize soil-borne disease resistance appraisal inoculation device promotes this maize soil-borne disease resistance appraisal inoculation device, can sow seed and germ simultaneously at equal interval, improves seeding efficiency, and is single can operate, the cost is reduced.

Referring to fig. 1 to 4, an inoculation apparatus for identifying resistance of soil-borne diseases of corn includes: the frame 9, the lower part of frame 9 sets up rotatable wheel subassembly, and the rear side of wheel subassembly sets up down the glassware, and the telescopic unloading pipe is connected to the first feed opening of unloading, and the side of wheel subassembly sets up the switching device who moves along with the wheel subassembly, and when the wheel subassembly rotated preset angle, the unloading was exported the material to the unloading pipe in the glassware down, and switching device drives the unloading pipe and inserts in soil simultaneously.

It should be noted that the structure of the frame 9 can be set according to practical application. Preferably, the frame 9 includes a handle 1 and a horizontally disposed transmission link 7 connected to a lower end of the handle 1, the handle 1 is disposed on two sides of the wheel assembly, the two handles 1 are connected to the two transmission links 7, and the two transmission links 7 are connected to two sides of the switch device.

On the basis of the above embodiment, as a further preferable mode, the blanking device includes a first material box 23, a first feeding hole is arranged at the upper part of the first material box 23, the first blanking hole is arranged at the bottom of the first material box 23, and the first material box 23 is connected with the frame 9;

the inside of first workbin 23 sets up fungus thing dish 20 and the kind of a dish 21 that the axis is parallel with wheel unit's axis, fungus thing dish 20 and kind of a dish 21 set up side by side, the outer peripheral face of fungus thing dish 20 sets up first silo 19, the outer peripheral face of kind of a dish 21 sets up the second silo 22 that corresponds with first silo 19, wheel unit passes through transmission synchronous drive fungus thing dish 20 and kind of a dish 21, when wheel unit rotates the first angle of predetermineeing, first silo 19 and second silo 22 are towards first feed inlet simultaneously, when wheel unit rotates the second angle of predetermineeing, first silo 19 and second silo 22 are towards first feed inlet simultaneously.

It should be noted that, the fungus disk 20 and the seed disk 21 arranged in the first bin 23 are both disc-shaped, the axis direction is horizontal, and the rotation direction is consistent with the rotation direction of the wheel assembly, so that the first trough 19 on the fungus disk 20 and the second trough 22 on the seed disk 21 can both rotate along the rotation direction of the wheel assembly, and when the corn soil-borne disease resistance identification and inoculation device is pushed, the wheel assembly rotates forward, the fungus disk 20 and the seed disk 21 are synchronously driven to rotate forward, and both the first preset angle and the second preset angle of the wheel assembly rotation can be set to 180 degrees. Whenever the wheel assembly rotates 180 degrees, the first chute 19 and the second chute 22 simultaneously face the first feed opening, at this time, pathogens can be loaded into the first chute 19, seeds are loaded into the second chute 22, and when the wheel assembly rotates 180 degrees again, the first chute 19 and the second chute 22 simultaneously face the first feed opening, so that pathogens and seeds are simultaneously sown into the soil. By circulating the above operations, seeds and germs can be simultaneously put into the soil to detect the disease resistance of various seeds.

The simple structure that this embodiment provided, the processing and the installation of being convenient for through all linking with the fungus thing dish 20 and kind of a dish 21 with wheel components, make the seeding simplification, the operation of being convenient for has promoted efficiency.

On the basis of the above embodiment, as a further preferred option, the feeder includes a second material box, the second material box is disposed on the upper portion of the first material box 23, the top of the second material box is provided with a second feeding hole, the bottom of the second material box is provided with a second feeding hole, a partition is disposed in the second material box and disposed above the second feeding hole, one side of the partition is a bacteria mixing box 2, the other side is a seed box 3, the second feeding hole of the bacteria mixing box 2 faces the outer peripheral surface of the bacteria tray 20, and the second feeding hole of the seed box 3 faces the outer peripheral surface of the seed tray 21.

It should be noted that the second feed opening disposed at the top of the second bin provided in this embodiment is larger, so as to facilitate the pathogens and the seeds to be respectively fed along the two sides of the partition, because the second feed openings at the two sides of the partition are respectively opposite to the outer peripheral surface of the bacteria tray 20 and the outer peripheral surface of the seed tray 21, when the bacteria tray 20 and the seed tray 21 rotate, the first feed opening 19 and the second feed opening 22 are respectively opposite to the two sides of the partition, when the pathogens and the seeds are respectively fed along the two sides of the partition, the pathogens can be fed into the first feed opening 19, the seeds can be fed into the second feed opening 22, the pathogens and the seeds can be further conveniently placed, the pathogens do not need to be directed at the first feed opening 19, the seeds need to be fed into the second feed opening 22, when the first feed opening 19 and the second feed opening 22 are respectively opposite to the two sides of the partition, the pathogens can be fed into the first feed opening 19 and the seeds can be fed into the second feed opening 22, the operation is more convenient, the germ caused by misoperation is prevented from being placed into the first trough 19 and the seeds are prevented from being placed into the second trough 22, and the working efficiency is improved.

On the basis of the above embodiment, as a further preferred, the transmission device includes a driving gear 18 and a driven gear 17 having the same size as the driving gear 18, the driving gear 18 is connected with the driven gear 17 for transmission through the chain 4, the wheel assembly includes a wheel 5 and an axle 8, the axle 8 is connected with the frame 9, the driving gear 18 is coaxially connected with the wheel 5 and synchronously rotates, a driven shaft 16 inserted into the first bin 23 is arranged on the side surface of the first bin 23, the driven shaft 16 is respectively connected with the bacterial disc 20 and the disc 21, and the driven shaft 16 located outside the first bin 23 is connected with the driven gear 17.

It should be noted that, the driving gear 18 and the driven gear 17 have the same structure, so that after the driving gear 18 rotates by a preset angle, the driven gear 17 driven by the chain 4 can also synchronously rotate by the preset angle, that is, the angular speeds of the driving gear 18 and the driven gear 17 are consistent, and the rotating angles at each time point are consistent, so that when the wheel 5 rotates by the preset angle, the fungus plate 20 and the seed plate 21 also rotate by the preset angle, which is more convenient for controlling the position intervals between adjacent seeds and corresponding pathogen seeding positions to be consistent, and ensures the seeding conditions of the seeds and the pathogens.

On the basis of the above embodiment, as a further preference, the frame 9 includes two handles 1, the lower ends of the two handles 1 are respectively connected to two ends of the axle 8, the two handles 1 are respectively provided with the fixing wires 14, and the two fixing wires 14 are respectively connected to two sides of the first material box 23.

It should be noted that, two handles 1 set up respectively in the both sides of wheel subassembly, and two handles 1 set up the fixed silk 14 respectively, and two fixed silks 14 connect respectively in the both sides of first workbin 23, make first workbin 23 can stably set up between two handles 1 and the rear of wheel subassembly, avoided when promoting maize soil-borne disease resistance appraisal inoculation device, first workbin 23 drops. And the structure is simple, and the installation is convenient.

On the basis of the above embodiment, as a further preferable option, the switch device includes an adjusting cover 12 connected to the frame 9, the blanking pipe includes a first material pipe 13 and a second material pipe 10, an upper end of the first material pipe 13 is connected to the first blanking port, the second material pipe 10 is movably sleeved on a lower portion of the first material pipe 13, and the second material pipe 10 is disposed in the adjusting cover 12;

the side surface of the wheel 5 is provided with a cam 6 which rotates synchronously with the wheel 5, the frame 9 is provided with an elastic switch which can move up and down, the periphery of the cam 6 is attached to the upper part of the elastic switch, and the elastic switch supports a second material pipe 10; the first elastic part 11 is arranged in the adjusting cover 12 and is in a compressed state, one end of the first elastic part 11 is connected with the upper part of the adjusting cover 12, the other end of the first elastic part 11 is connected with the second material pipe 10, and the elastic force of the first elastic part 11 is smaller than that of the elastic switch.

It should be noted that, openings are provided at the front side and the lower portion of the adjusting cover 12, the second material pipe 10 passes through the upper portion of the adjusting cover 12, the first material pipe 13 is inserted into the second material pipe 10, and the first material pipe 13 and the second material pipe 10 can move axially relatively, and since the first material pipe 13 and the second material pipe 10 in this embodiment are both disposed downward, the first material pipe 13 and the second material pipe 10 can move relatively in the vertical direction.

The wheel 5 can drive the cam 6 to rotate while rotating, one side of the cam 6 is provided with a bulge, and the other sides are circumferential surfaces, so that the bulge of the cam 6 can press down the elastic switch when going downwards, the elastic switch moves downwards, at the moment, the elastic potential energy of the first elastic part 11 is released, the second material pipe 10 is pressed down, the second material pipe 10 is inserted into soil, and germs and seeds are sown. When the wheel 5 rotates forwards until the protrusion of the cam 6 leaves the elastic switch, the elastic switch restores the original position, and because the elastic force of the elastic switch is greater than that of the first elastic part 11, the elastic switch can drive the second material pipe 10 to leave the soil upwards, and simultaneously compress the first elastic part 11, and when the wheel 5 rotates forwards until the cam 6 presses down the elastic switch again, the following seeds and germs can be sown.

On the basis of the above embodiment, as a further preferred, the elastic switch includes the transmission link 7, the middle portion of the transmission link 7 is connected with the frame 9 through the second elastic member 15, the rear end of the transmission link 7 supports the second material pipe 10, the cam 6 is attached to the upper portion of the front end of the transmission link 7, and the second elastic member 15 is in a stretching state.

It should be noted that the transmission connecting rod 7 is a cross rod, the front end of the transmission connecting rod is attached to the cam 6, the rear end of the transmission connecting rod is attached to the second material pipe 10, when the cam 6 presses down the transmission connecting rod 7, the second elastic part 15 is stretched, the second material pipe 10 can be inserted into soil at the moment, when the protrusion of the cam 6 leaves the transmission connecting rod 7, the second elastic part 15 is restored to the original state, the transmission connecting rod 7 is driven to compress the first elastic part 11, and the first elastic part 11 drives the second material pipe 10 to be lifted so as to prepare for next sowing.

On the basis of the above embodiments, in order to facilitate the transmission connecting rod 7 to support the second material pipe 10, as a further preferred embodiment, a protrusion is disposed on a side surface of the second material pipe 10, the first elastic member 11 is pressed against an upper surface of the protrusion, and the transmission connecting rod 7 supports a lower surface of the protrusion. The protruding convex plate that sets up for transversely, because the face area of convex plate is great, can closely laminate in transmission connecting rod 7, guarantee that transmission connecting rod 7 can not break away from with the arch, promote transmission connecting rod 7's supporting effect.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The inoculation device for identifying the resistance of the corn soil-borne diseases provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A maize soil-borne disease resistance appraises inoculation device which characterized in that includes: frame (9), the lower part of frame (9) sets up rotatable wheel subassembly, the rear side of wheel subassembly sets up down the glassware, telescopic unloading pipe is connected to the first feed opening of unloading, the side of wheel subassembly sets up along wheel subassembly and the switching device who moves, when wheel subassembly rotates and predetermines the angle, the unloading to output material in the unloading pipe, simultaneously switching device drives the unloading pipe inserts in the soil.

2. The corn soil-borne disease resistance identification inoculation device according to claim 1, wherein the blanking device comprises a first material box (23), a first feeding hole is formed in the upper portion of the first material box (23), the first blanking hole is formed in the bottom of the first material box (23), and the first material box (23) is connected with the frame (9);

the inside of first workbin (23) set up the axis with the parallel fungus thing dish (20) of axis of wheel subassembly and kind dish (21), fungus thing dish (20) with kind dish (21) set up side by side, the outer peripheral face of fungus thing dish (20) sets up first silo (19), the outer peripheral face of kind dish (21) set up with second silo (22) that first silo (19) correspond, wheel subassembly passes through transmission synchronous drive fungus thing dish (20) with kind dish (21), when wheel subassembly rotates the first angle of predetermineeing, first silo (19) with second silo (22) are faced simultaneously first feed inlet, when wheel subassembly rotates the second and predetermines the angle, first silo (19) with second silo (22) are faced simultaneously first feed inlet.

3. The corn soil-borne disease resistance identification inoculation device according to claim 2, characterized in that the feeder comprises a second material box, the second material box is arranged on the upper portion of the first material box (23), the top of the second material box is provided with a second feed opening, the bottom of the second material box is provided with a second feed opening, a partition is arranged in the second material box and is arranged above the second feed opening, one side of the partition is a fungus material mixing box (2), the other side is a seed box (3), the second feed opening of the fungus material mixing box (2) is right opposite to the outer peripheral surface of the fungus material disc (20), and the second feed opening of the seed box (3) is right opposite to the outer peripheral surface of the seed disc (21).

4. The corn soil-borne disease resistance identification inoculation device according to claim 2, the transmission device comprises a driving gear (18) and a driven gear (17) with the same size as the driving gear (18), the driving gear (18) is connected with the driven gear (17) through a chain (4) for transmission, the wheel assembly comprises wheels (5) and an axle (8), the axle (8) is connected with the frame (9), the driving gear (18) is coaxially connected with the wheel (5) and synchronously rotates, a driven shaft (16) inserted into the first material box (23) is arranged on the side surface of the first material box (23), the driven shaft (16) is respectively connected with the bacterium plate (20) and the seed plate (21), and the driven shaft (16) positioned outside the first material box (23) is connected with the driven gear (17).

5. The corn soil-borne disease resistance identification inoculation device according to claim 4, wherein the frame (9) comprises two handles (1), the lower ends of the two handles (1) are respectively connected to the two ends of the axle (8), the two handles (1) are respectively provided with fixing wires (14), and the two fixing wires (14) are respectively connected to the two sides of the first feed box (23).

6. The corn soil-borne disease resistance identification inoculation device according to claim 4 or 5, wherein the switch device comprises an adjusting cover (12) connected with the frame (9), the feeding pipe comprises a first feeding pipe (13) and a second feeding pipe (10), the upper end of the first feeding pipe (13) is connected to the first feeding opening, the second feeding pipe (10) is movably sleeved at the lower part of the first feeding pipe (13), and the second feeding pipe (10) is arranged in the adjusting cover (12);

a cam (6) which rotates synchronously with the wheel (5) is arranged on the side surface of the wheel (5), an elastic switch which can move up and down is arranged on the frame (9), the periphery of the cam (6) is attached to the upper part of the elastic switch, and the elastic switch supports the second material pipe (10); the adjusting cover (12) is internally provided with a first elastic part (11) in a compressed state, one end of the first elastic part (11) is connected with the upper part of the adjusting cover (12), the other end of the first elastic part is connected with the second material pipe (10), and the elastic force of the first elastic part (11) is smaller than that of the elastic switch.

7. The corn soil-borne disease resistance identification inoculation device according to claim 6, wherein the elastic switch comprises a transmission connecting rod (7), the middle part of the transmission connecting rod (7) is connected with the frame (9) through a second elastic part (15), the rear end of the transmission connecting rod (7) supports the second material pipe (10), the cam (6) is attached to the upper part of the front end of the transmission connecting rod (7), and the second elastic part (15) is in a stretching state.

8. The corn soil-borne disease resistance identification inoculation device according to claim 7, wherein a protrusion is arranged on the side surface of the second material pipe (10), the first elastic member (11) is pressed on the upper surface of the protrusion, and the transmission connecting rod (7) supports the lower surface of the protrusion.