CN217064526U - Perforating device for tobacco seedling transplantation - Google Patents

Abstract

The utility model discloses a perforating device is used in tobacco seedling transplantation, driven shaft and driving shaft including parallel from top to bottom, the middle part of driven shaft and driving shaft is equipped with corresponding from sprocket and the main sprocket that links to each other from top to bottom and through the chain respectively, the right-hand member of driven shaft and driving shaft is equipped with corresponding upper tumbler and lower tumbler from top to bottom respectively, the middle part of upper tumbler and lower tumbler is fixed connection respectively on driven shaft and driving shaft, the lower extreme of upper tumbler and lower tumbler is fixed connection respectively has corresponding punching axle and balance shaft from top to bottom, be equipped with common rocking arm frame on punching axle and the balance shaft, the right-hand member fixed connection of balance shaft is in the lower part of revolving arm frame, the punching axle wears to establish and rotatable connects in the upper portion of revolving arm frame after the right-hand member fixed connection has long tumbler, the lower extreme rotatable connection of long tumbler has the push rod, the lower extreme rotatable connection of push rod has the mechanism of punching, the mechanism slidable from top to bottom connects in the right-hand member of revolving arm frame; the utility model has the advantages of high working efficiency and high hole standardization degree.

Description

Perforating device for tobacco seedling transplantation

Technical Field

The utility model belongs to the technical field of tobacco planting equipment, concretely relates to tobacco seedling transplants and uses perforating device.

Background

Before transplanting the tobacco seedlings, holes are usually excavated on the ground in advance, the traditional excavation of the holes is completed manually by depending on tools such as a hoe and an iron shovel, the labor intensity is high, the punching efficiency is low, the excavated holes are not standard, the transplanting and the growth of the tobacco seedlings are not facilitated, and then, various manual punching devices are replaced to be transported.

The existing hand-held electric puncher drives a punching drill bit to rotate by utilizing a motor and simultaneously presses down a punching rod with both hands forcibly, the punching rod and the punching drill bit are matched together to complete punching, namely, hole digging, which is a great progress compared with the traditional manual digging, but the manual punching is carried out for a long time, the physical consumption of workers is great, the workers have to rest after working for a period of time, the punching work is resumed after physical strength is recovered, the long-time continuous punching can not be carried out, the working efficiency still needs to be improved, the punching distance and the punching depth basically need to be controlled by manual matching, and the standard degree of digging holes also needs to be improved; in order to solve the problems, it is necessary to develop a perforating device for transplanting tobacco seedlings.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art and providing a perforating device for tobacco seedling transplantation, which has high working efficiency and high hole standardization degree.

The purpose of the utility model is realized like this: a perforating device for tobacco seedling transplanting comprises a driven shaft and a driving shaft which are parallel up and down, wherein a driven chain wheel and a main chain wheel which correspond up and down are respectively arranged at the middle parts of the driven shaft and the driving shaft, the driven chain wheel and the main chain wheel are connected through a chain, an upper rotating arm and a lower rotating arm which correspond up and down are respectively arranged at the right ends of the driven shaft and the driving shaft, the middle parts of the upper rotating arm and the lower rotating arm are respectively and fixedly connected to the driven shaft and the driving shaft, a perforating shaft and a balancing shaft which correspond up and down are respectively and fixedly connected at the lower ends of the upper rotating arm and the lower rotating arm, a common rotating arm frame is arranged on the perforating shaft and the balancing shaft, the right end of the balancing shaft is fixedly connected to the lower part of the rotating arm frame, the perforating shaft penetrates through the upper part of the rotating arm and is rotatably connected to the upper end of a long rotating arm, and the long rotating arm and the upper rotating arm are arranged in opposite directions, the lower end of the long rotating arm is rotatably connected with a push rod, the lower end of the push rod is rotatably connected with a punching mechanism, and the punching mechanism can be connected to the right end of the rotating arm frame in a vertically sliding mode.

Preferably, the upper rotating arm and the lower rotating arm are umbrella-shaped structures with a large end and a small end, the umbrella head of each umbrella-shaped structure is located at the position right below the umbrella head when the umbrella-shaped structure is reset, the punching mechanism is located at the position right above the umbrella head, when the umbrella head of each umbrella-shaped structure rotates to the position right above the umbrella head during movement, the punching mechanism moves to the position right below the umbrella head, and similarly, when the umbrella head of each umbrella-shaped structure rotates to the position right below the umbrella head, the punching mechanism moves to the position right above the umbrella head.

Preferably, the punching mechanism comprises a motor, a motor base and a punching drill bit, the motor is detachably and fixedly installed in the motor base, a detachable fixed connection is arranged below the motor base and is connected with the lower end of the motor output shaft, the punching drill bit is arranged at the upper end of the motor base, the punching mechanism passes through the left end of the mounting plate and can be vertically slidably connected with the right end of the rotary arm frame, and the lower end of the push rod is connected with the punching mechanism through the mounting plate in a rotatable mode.

Further preferably, the right end of the rotary arm frame is provided with two sliding rods which are parallel to each other in the front-back direction, the left end of the mounting plate is provided with two sliding sleeves, the opening direction, the opening inner diameter and the front-back position of each sliding sleeve are matched with the two sliding rods, and the punching mechanism is respectively sleeved on the two sliding rods through the two sliding sleeves and then can be connected to the right end of the rotary arm frame in a vertically sliding manner.

Further preferably, the up end of mounting panel is equipped with two ear plates of controlling the parallel, two wear to be equipped with round pin axle A on the ear plate, the lower pot head of push rod is located round pin axle A is gone up and is located two between the ear plate, the lower extreme of push rod passes through the mounting panel round pin axle A and two the rotatable formula of ear plate is connected with punch the mechanism.

Preferably, the lower end of the long rotating arm is provided with a pin shaft B, the upper end of the push rod is sleeved on the pin shaft B and positioned on the outer side of the lower end of the long rotating arm, and the lower end of the long rotating arm is rotatably connected with the push rod through the pin shaft B.

Preferably, the push rod is adjustable in length.

Preferably, a bearing A is arranged in the middle of the punching shaft, the bearing A is mounted at the upper part of the rotary arm frame, and the punching shaft penetrates through the bearing A and is rotatably connected to the upper part of the rotary arm frame.

Preferably, two ends of the driven shaft and the driving shaft are respectively mounted at the upper part and the lower part of the same U-shaped groove with a forward opening through two bearings B, the right end of the driven shaft extends out of the corresponding right end of the bearing B and then is fixedly connected to the middle part of the upper rotating arm, and the left end of the driving shaft extends out of the corresponding left end of the bearing B and then is provided with a connecting chain wheel.

Further preferably, the rear end and the lower end of the U-shaped groove are respectively provided with an upper mounting bracket and a lower mounting bracket.

Owing to adopted above technical scheme, the beneficial effects of the utility model are that: the utility model discloses a driving shaft drives driven shaft, last cantilever crane, the axle that punches and long rocking arm synchronous revolution in proper order, relies on long rocking arm and push rod pulling mounting panel and motor cabinet to reciprocate along the slide bar regularly to the drive drill bit reciprocates regularly, and then accomplishes the good punching work of front-back uniformity, has greatly improved the standard degree in digging the hole, no longer need the manual work to push down hard to make the drill bit reciprocate in punching simultaneously, can punch work for a long time in succession, work efficiency can effectively improve; the utility model adopts the lower rotating arm and the balance shaft to be matched with the upper rotating arm and the punching shaft, and synchronously punches through the rotating arm frame, thereby well increasing the stability of the up-and-down movement of the punching drill bit and further improving the standard degree of the punched hole; in summary, the utility model has the advantages of work efficiency is high, hole standard degree is high.

Drawings

Fig. 1 is a first schematic view of the structure of the present invention.

Fig. 2 is a schematic diagram of the right-side view structure of the present invention.

Fig. 3 is a schematic perspective view of the first embodiment of the present invention.

Fig. 4 is a schematic perspective view of the upper and lower rotating arms of the present invention.

Fig. 5 is a schematic view of the three-dimensional structure of the relative position relationship among the rotary arm support, the push rod, the mounting plate, the slide rod and the like.

Fig. 6 is a schematic perspective view of the push rod of the present invention.

Fig. 7 is a schematic view of the front view structure of the present invention.

Fig. 8 is a left side view structure diagram of the present invention.

Fig. 9 is a third schematic perspective view of the present invention.

Fig. 10 is a schematic diagram of the movement trace of the drill bit of the present invention.

In the figure: 1. a driven shaft 2, a driven chain wheel 3, an upper rotating arm 4, a rotating arm bracket 41, an upper fixing plate 42, a lower fixing plate 5, a bearing A6, a perforating shaft 7, a long rotating arm 8, a pin shaft B9, a push rod 91, a connecting rod 92, a fastening nut 93, a bidirectional screw rod 10, a slide bar 11, an ear plate 12, a pin shaft A13 and a mounting plate 14, the drilling machine comprises a motor base 15, a motor 16, a drilling bit 17, a sliding sleeve 18 balance shaft 19, a driving shaft 20, a main chain wheel 21, a lower rotating arm 22, a chain 23, an umbrella head 24, a bearing B25, a U-shaped groove 26, a lower mounting bracket 27, a connecting chain wheel 28, an upper mounting bracket a, the actual motion track and direction B of the drilling bit, the forward moving direction c of the drilling bit, the diameter d of a short shaft of the drilling bit doing elliptic motion and the elliptic motion track of the drilling bit.

Detailed Description

The technical scheme of the utility model is further explained in detail with the attached drawings.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the utility model provides a perforating device is used in tobacco seedling transplantation, including driven shaft 1 and driving shaft 19 parallel from top to bottom, driven shaft 1 and driving shaft 19's middle part is equipped with corresponding from sprocket 2 and main sprocket 20 from top to bottom respectively, and from sprocket 2 and main sprocket 20 to pass through chain 22 and link to each other, and external power passes through the input of driving shaft 19, then drives driven shaft 1 synchronous rotation through main sprocket 20, chain 22 and from sprocket 2.

The right-hand member of driven shaft 1 and driving shaft 19 is equipped with corresponding upper boom 3 and lower rocking arm 21 from top to bottom respectively, the middle part of upper boom 3 and lower rocking arm 21 is fixed connection respectively on driven shaft 1 and driving shaft 19, the lower extreme of upper boom 3 and lower rocking arm 21 is fixed connection respectively and is corresponding about punching axle 6 and balance shaft 18, be equipped with common rocking arm frame 4 on punching axle 6 and the balance shaft 18, the right-hand member fixed connection of balance shaft 18 is in the lower part of rocking arm frame 4, punching axle 6 wears to establish and rotatable formula and connects in the upper portion of rocking arm frame 4 after right-hand member fixed connection in the upper end of long rocking arm 7 and the opposite direction setting of upper boom 3, the rotatable push rod 9 that is connected with of lower extreme of long rocking arm 7, the rotatable formula of punching mechanism that is connected with of push rod 9, the mechanism of punching is slidable from top to bottom in the right-hand member of rocking arm frame 4. Specifically, the lower rotating arm 21 and the balance shaft 18 are arranged for balancing the upper rotating arm 3 and the punching shaft 6, so that the rotating arm frame 4 is stable in motion balance, the punching mechanism is stable in motion balance, the punching work is stable, and the punching quality is good. Specifically, the long rotating arm 7 and the upper rotating arm 3 which are opposite in direction are respectively positioned on two sides of the axis of the punching shaft 6, but are positioned on the same radial plane, that is, the long rotating arm 7 and the upper rotating arm 3 are positioned on the same straight line when viewed from the axial direction of the punching shaft 6, and the upper rotating arm 3 and the long rotating arm 7 rotate together around the driven shaft 1 when rotating.

Preferably, the upper rotating arm 3 and the lower rotating arm 21 are umbrella-shaped structures with a large end and a small end, the umbrella head 23 of the umbrella-shaped structure is located right below the umbrella head 23 during resetting, the punching mechanism is located right above the umbrella head, when the umbrella head 23 of the umbrella-shaped structure rotates right above during movement, the punching mechanism moves right below, at the moment, hole excavation is just completed, the punching mechanism is about to move upwards, similarly, when the umbrella head 23 of the umbrella-shaped structure rotates right below, the punching mechanism moves right above, at the moment, the upper rotating arm 3, the lower rotating arm 21 and the punching mechanism reset, and the next punching is about to start. Wherein, the umbrella head 23 of umbelliform structure is equivalent to the counter weight, is equivalent to original manual work and pushes down the application of force for order about the mechanism of punching and can move down, the cooperation is accomplished and is punched.

Preferably, the punching mechanism comprises a motor 15, a motor base 14 and a punching drill bit 16, the motor 15 is detachably and fixedly installed in the motor base 14, the punching drill bit 16 is detachably and fixedly connected to the lower end of an output shaft of the motor 15 and is arranged below the motor base 14, a mounting plate 13 is arranged at the upper end of the motor base 14, the punching mechanism is connected to the right end of the rotating arm frame 4 in a vertically sliding mode through the left end of the mounting plate 13, and the lower end of the push rod 9 is rotatably connected with the punching mechanism through the mounting plate 13. Specifically, the motor 15 rotates the drill bit 16, and when the drill bit 16 is pushed by the push rod to move downward, the motor and the drill bit cooperate to rotate the drill bit 16 while moving downward, thereby completing the drilling operation more easily.

In specific implementation, the mounting plate 13 is detachably and fixedly connected to the upper end surface of the motor base 14 through fasteners such as bolts, nuts, washers and the like.

Further preferably, two sliding rods 10 parallel to each other are disposed at the right end of the swing arm frame 4, two sliding sleeves 17 are disposed at the left end of the mounting plate 13, and the two sliding rods 10 are respectively sleeved with the punching mechanism through the two sliding sleeves 17, and then the punching mechanism can be slidably connected to the right end of the swing arm frame 4 up and down. Specifically, the two sliding rods 10 and the two sliding sleeves 17 enable the punching mechanism to move smoothly and stably while moving up and down, so that the punching drill 16 works stably, and the formed holes are more standard.

During specific implementation, the sliding sleeve 17 is arranged at the left end of the mounting plate 13 in a penetrating manner and then is detachably and fixedly connected to the left end of the mounting plate 13 through a sunk screw.

In specific implementation, an upper fixing plate 41 and a lower fixing plate 42 of an L-shaped structure are detachably mounted at the right end of the rotating arm frame 4, side plates of the L-shaped structure are used for detachably mounting the side plates with the rotating arm frame 4, a bottom plate of the L-shaped structure is used for clamping the sliding rod 10, and two ends of the sliding rod 10 are fixedly connected to the right end of the rotating arm frame 4 through clamping of the upper fixing plate 41 and the lower fixing plate 42.

Further preferably, the upper end surface of the mounting plate 13 is provided with two ear plates 11 which are parallel to each other, a pin shaft a12 penetrates through the two ear plates 11, the lower end of the push rod 9 is sleeved on the pin shaft a12 and located between the two ear plates 11, and the lower end of the push rod 9 is rotatably connected with a punching mechanism through the mounting plate 13, the pin shaft a12 and the two ear plates 11.

Preferably, the lower end of the long rotating arm 7 is provided with a pin B8, the upper end of the push rod 9 is sleeved on the pin B8 and is positioned outside the lower end of the long rotating arm 7, and the lower end of the long rotating arm 7 is rotatably connected with the push rod 9 through a pin B8.

Specifically, the upper end and the lower end of the push rod 9 are rotatably connected to the lower end of the long pivot arm 7 and the upper end of the mounting plate 13 by a pin B8 and a pin a12, respectively, thereby completing the rotatable connection between the long pivot arm 7 and the push rod 9, and between the push rod 9 and the punching mechanism.

Preferably, the push rod 9 is adjustable in length.

During specific implementation, the push rod 9 includes a bidirectional screw rod 93, and nuts 92 and a connecting rod 91 which are connected to two ends of the bidirectional screw rod 93 through threads, wherein pin holes which are matched with the pin shafts B8 and a12 are formed in the outer end of the connecting rod 91, the pin holes are used for being matched with the pin shafts B8 and a pin shaft a12 to respectively complete rotatable connection of pin shaft connecting structures at respective positions, forward and reverse threads are respectively formed in two ends of the bidirectional screw rod 93, and when the bidirectional screw rod 93 is rotated, the nuts 92 and the connecting rod 91 at two ends of the bidirectional screw rod can be simultaneously drawn together inwards or separated outwards, so that the length of the push rod 9 can be adjusted.

Preferably, the middle part of the perforating shaft 6 is provided with a bearing a5, the bearing a5 is installed at the upper part of the rotary arm support 4, the perforating shaft 6 is penetrated through a bearing a5 and can be rotatably connected to the upper part of the rotary arm support 4, and the bearing a5 can enable the perforating shaft 6 to rotate flexibly and smoothly.

In specific implementation, as shown in fig. 7, 8 and 9, two ends of the driven shaft 1 and the driving shaft 19 are respectively mounted on the upper and lower parts in the same substantially forward-opened U-shaped groove 25 through two bearings B24, the right end of the driven shaft 1 extends out of the right end of the corresponding bearing B24 and is fixedly connected to the middle part of the upper rotating arm 3, the left end of the driving shaft 19 extends out of the corresponding bearing B24 and is provided with a connecting chain wheel 27, and the rear end and the lower end of the U-shaped groove 25 are respectively provided with an upper mounting bracket 28 and a lower mounting bracket 26. Wherein, the connecting chain wheel 27 is used for connecting external power so as to input the external power for the driving shaft 19, and the upper mounting bracket 28 and the lower mounting bracket 26 are used for connecting the host machine frame, so that the whole punching device is connected with the host machine frame and can move back and forth along with the host machine frame.

After the installation is completed, the utility model can be put into use, external power (the external power can be from a host or can be an independent motor which is arranged on a host frame) is connected through the connecting chain wheel 27 before use, the host frame is connected through the upper mounting bracket 28 and the lower mounting bracket 26 (generally, the connection is fixed by welding), and the upper rotating arm 3, the lower rotating arm 21 and the punching mechanism are placed in a reset state; starting the motor 15, then when the driving shaft 19 receives external power and starts to rotate forwards, the driven shaft 1 synchronously rotates forwards through the transmission of the main chain wheel 20, the chain 22 and the driven wheel 2, further drives the upper rotating arm 3 and the lower rotating arm 21 to synchronously rotate forwards along with the driven shaft 1 and the driving shaft 19, further drives the punching shaft 6 and the balance shaft 18 at the lower ends of the two to synchronously move forwards in a circular motion around the driven shaft 1 and the driving shaft 19, further drives the rotating arm frame 4 to synchronously move forwards in an up-and-down direction along with the punching shaft 6 and the balance shaft 18, further drives the punching mechanism (punching drill bit) to synchronously move forwards in an up-and-down direction in an elliptical motion, simultaneously drives the long rotating arm 7 and the lower part of the upper rotating arm 3 to synchronously move forwards in a circular motion around the driven shaft 1, which is larger than the diameter of the lower end of the upper rotating arm 3, namely the punching shaft 6, and pulls the push rod 9 to drive the punching mechanism (punching drill bit) to reciprocate up and down along the slide rod 10, the punching mechanism (the drill) is moved to the lowermost side when the long rotary arm 7 is moved to the lowermost side, and the punching mechanism (the drill) is moved to the uppermost side when the long rotary arm 7 is moved to the uppermost side, thereby completing the punching work.

As shown in fig. 10, during the punching operation of the whole punching apparatus, the punching bit 16 both moves forward along the direction b along with the main frame and is driven by the whole punching apparatus to perform an elliptical motion along the trajectory d, when the minor axis diameter c of the next half elliptical motion (i.e. actual punching) of the punching bit 16 is designed to be just equal to the distance of the forward movement, i.e. the backward movement of the next half elliptical motion is designed to be just offset by the forward movement carried by the main frame, which is equivalent to that the punching bit 16 is stationary in place during actual punching, so as to obtain a movement trajectory and a direction a meeting the actual punching requirement, and uniformly punch holes perpendicular to the ground with good forming quality at intervals, thereby finally realizing high standard degree of holes.

It is worth mentioning that the utility model discloses still be applicable to other seedlings except that the tobacco seedling (like cotton seedling, hot pepper seedling etc.) use before transplanting, use the scene unlimited.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. The utility model provides a tobacco seedling transplants and uses perforating device which characterized in that: the punching mechanism comprises a driven shaft and a driving shaft which are parallel up and down, wherein a driven chain wheel and a main chain wheel which correspond up and down are respectively arranged at the middle parts of the driven shaft and the driving shaft, the driven chain wheel and the main chain wheel are connected through a chain, an upper rotating arm and a lower rotating arm which correspond up and down are respectively arranged at the right ends of the driven shaft and the driving shaft, the middle parts of the upper rotating arm and the lower rotating arm are respectively and fixedly connected to the driven shaft and the driving shaft, the lower ends of the upper rotating arm and the lower rotating arm are respectively and fixedly connected with a punching shaft and a balance shaft which correspond up and down, a common rotating arm frame is arranged on the punching shaft and the balance shaft, the right end of the balance shaft is fixedly connected to the lower part of the rotating arm frame, the punching shaft penetrates through the upper part of the rotating arm frame and can be rotatably connected to the upper end of a long rotating arm, and the long rotating arm and the upper rotating arm are arranged in opposite directions, the lower end of the long rotating arm is rotatably connected with a push rod, the lower end of the push rod is rotatably connected with a punching mechanism, and the punching mechanism can be connected to the right end of the rotating arm frame in a vertically sliding mode.

2. The perforating device for tobacco seedling transplantation according to claim 1, characterized in that: the upper rotating arm and the lower rotating arm are of umbrella-shaped structures with one large end and one small end, the umbrella heads of the umbrella-shaped structures are located right below the umbrella heads during resetting, the punching mechanisms are located right above the umbrella heads, when the umbrella heads of the umbrella-shaped structures rotate right above during movement, the punching mechanisms move right below, and similarly, when the umbrella heads of the umbrella-shaped structures rotate right below, the punching mechanisms move right above.

3. The perforating device for tobacco seedling transplantation according to claim 1, characterized in that: the punching mechanism comprises a motor, a motor base and a punching drill bit, the motor is detachably fixedly installed in the motor base, a detachable fixed connection is arranged below the motor base, the punching drill bit is arranged at the lower end of the motor output shaft, a mounting plate is arranged at the upper end of the motor base, the punching mechanism passes through the left end of the mounting plate, which can be vertically slidably connected with the right end of the rotary arm frame, and the lower end of the push rod is connected with the punching mechanism through the mounting plate in a rotatable manner.

4. The perforating device for tobacco seedling transplantation according to claim 3, characterized in that: the right-hand member of revolving arm frame is equipped with two parallel slide bars from beginning to end, the left end of mounting panel is equipped with two trompil directions, trompil internal diameter and front and back position and all matches two the sliding sleeve that the slide bar set up, the mechanism of punching passes through two the sliding sleeve is respectively overlapped and is located two but sliding type connect in from top to bottom behind the slide bar the right-hand member of revolving arm frame.

5. The perforating device for tobacco seedling transplantation according to claim 3, characterized in that: the up end of mounting panel is equipped with about two parallel otic placodes, two wear to be equipped with round pin axle A on the otic placode, the lower pot head of push rod is located round pin axle A is gone up and is located two between the otic placode, the lower extreme of push rod passes through the mounting panel round pin axle A and two the rotatable formula of otic placode is connected with punch the mechanism.

6. The perforating device for tobacco seedling transplantation according to claim 1, wherein: the lower end of the long rotating arm is provided with a pin shaft B, the upper end of the push rod is sleeved on the pin shaft B and positioned on the outer side of the lower end of the long rotating arm, and the lower end of the long rotating arm is rotatably connected with the push rod through the pin shaft B.

7. The perforating device for tobacco seedling transplantation according to claim 1, characterized in that: the length of the push rod is adjustable.

8. The perforating device for tobacco seedling transplantation according to claim 1, characterized in that: the middle part of the perforating shaft is provided with a bearing A, the bearing A is arranged on the upper part of the rotary arm frame, and the perforating shaft penetrates through the bearing A and is rotatably connected to the upper part of the rotary arm frame.

9. The perforating device for tobacco seedling transplantation according to claim 1, wherein: the two ends of the driven shaft and the driving shaft are respectively installed at the upper part and the lower part of the same U-shaped groove with the forward opening through two bearings B, the right end of the driven shaft extends out of the right end of the corresponding bearing B and then is fixedly connected to the middle part of the upper rotating arm, and the left end of the driving shaft extends out of the left end of the corresponding bearing B and then is provided with a connecting chain wheel.

10. The perforating device for tobacco seedling transplantation according to claim 9, characterized in that: and the rear end and the lower end of the U-shaped groove are respectively provided with an upper mounting bracket and a lower mounting bracket.

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