CN112629924A

CN112629924A - Agricultural soil layer sampling and collecting device

Info

Publication number: CN112629924A
Application number: CN202110038049.6A
Authority: CN
Inventors: 杜照志
Original assignee: Chengdu Yuezhou'an Technology Co ltd
Current assignee: Chengdu Yuezhou'an Technology Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-04-09

Abstract

The invention discloses an agricultural soil layer sampling and collecting device, which comprises a shell, wherein a movable cavity with a downward opening is arranged in the shell, the top wall of the movable cavity is communicated with a lifting groove which penetrates through the shell, the front side wall and the rear side wall of the lifting groove are provided with a sampling barrel in a sliding way, a sampling cavity which penetrates through the sampling barrel up and down is arranged in the sampling barrel, the right side wall of the sampling cavity is communicated with a connecting groove which penetrates through the sampling barrel, the right side wall of the lifting groove is fixedly provided with an extension block which passes through the connecting groove, the device is simple to use, the movement of the sealing plate in the sampling bucket and the transmission belt in the belt transmission groove is controlled by the movement of the propelling rack, so that the sampling bucket is sealed after penetrating into the soil layer, thereby make the soil layer sample can be completely collected through atmospheric pressure, guarantee going on of detection achievement, through the cooperation between stripper plate and the solid soil swash plate, guarantee to go deep into the in-process soil layer at the sampling bucket and fix.

Description

Agricultural soil layer sampling and collecting device

Technical Field

The invention relates to the technical field of information acquisition, in particular to an agricultural soil layer sampling and collecting device.

Background

The agricultural land has high requirements on soil, crops need to absorb various substances in the soil, the soil layer needs to be deeply known when judging whether the soil can be used for planting the crops, the existing equipment generally only collects surface soil for analysis, and the surface soil is easily mixed when the deep soil is collected, so that the result of soil analysis is influenced.

Disclosure of Invention

Aiming at the defects of the technology, the invention provides an agricultural soil layer sampling and collecting device which can overcome the defects.

The agricultural soil layer sampling and collecting device comprises a shell, wherein a movable cavity with a downward opening is arranged in the shell, the top wall of the movable cavity is communicated with a lifting groove penetrating through the shell, a sampling barrel is arranged on the front side wall and the rear side wall of the lifting groove in a rear sliding mode, a sampling cavity penetrating up and down is arranged in the sampling barrel, the right side wall of the sampling cavity is communicated with a connecting groove penetrating through the sampling barrel, an extension block penetrating through the connecting groove is fixedly arranged on the right side wall of the lifting groove, a threaded sleeve is rotatably connected in the sampling cavity by the extension block, a movable shaft is connected in threaded connection with the threaded sleeve in a threaded mode, a sealing plate is fixedly connected to the lower side of the extension block by the movable shaft, a fixed block is rotatably connected to the lower side of the sealing plate by the movable shaft, the fixed block is in sliding fit with the inner wall of the sampling cavity, the sealing plate is in sliding fit with the upper end face of the fixed block, the sealing plate seals the fixed block, the movable shaft is connected with a locking gear on the upper side of the extension block in a sliding manner, a pushing rack is arranged on the top wall of the shell on the upper side of the extension block in a left-right sliding manner and is connected with the locking gear in a meshing manner, a belt wheel shaft is fixedly connected to the rear side of the locking gear by the pushing rack, a belt transmission groove communicated with the lifting groove is arranged on the right side of the movable cavity of the shell, the top wall of the belt transmission groove is communicated with a linking sliding groove which penetrates upwards, a transition shaft is rotatably arranged on the top wall of the belt transmission groove, the transition shaft is in transmission connection with the threaded sleeve through a transmission belt, a connecting slide block which extends into the belt transmission groove is arranged on the front wall and the rear wall of the linking sliding groove in a sliding manner, and, the link block in be equipped with the opening and run through the groove of accomodating around and downwards in the belt drive inslot, accomodate groove roof fixed mounting there is the stopper, accomodate the groove roof in lateral symmetry rotates around the stopper and installs and support the balance weight, it passes through spring coupling to support the balance weight the stopper, support the balance weight with the driving belt contact, the casing in activity chamber rear side is equipped with the motor chamber, the motor chamber with wall body between the activity chamber rotates installs the balance staff, the balance staff runs through and rotates the connection lateral wall around the activity chamber, the balance staff in the activity intracavity with the sampling bucket rotates for symmetry around the center and is connected with the pendulum rod, the pendulum rod downside rotates and is connected with the stripper plate.

Preferably, the shell is provided with gear grooves with back-to-back openings on the left side and the right side of the movable cavity respectively, the shell is provided with a transition cavity on the rear side of the gear groove, the transition cavity is positioned on the lower side of the motor cavity, a gear shaft is rotatably arranged on the wall body between the transition cavity and the gear groove, the gear shaft is fixedly connected with a linking gear in the gear groove, the left side wall and the right side wall of the shell are symmetrically provided with soil fixing inclined plates in an up-and-down sliding manner, the soil fixing inclined plates seal the gear groove, the soil fixing inclined plates are provided with a limiting movable groove with an opening facing the gear groove, the bottom wall of the gear groove is provided with a driven rack extending into the limiting movable groove in a sliding manner, the driven rack is meshed with the linking gear, the gear shaft on the right side is fixedly connected with a transmission gear in the gear groove, and a compression, the pressure bar rack extends into the movable cavity and is in sliding fit with the swing rod, and the pressure bar rack is meshed and connected with the transmission gear in the gear groove. The compression bar rack is connected with the side wall of the movable cavity through a spring.

Preferably, the left side wall and the right side wall of the transition cavity are rotatably provided with connecting shafts, and the gear shaft is connected with the connecting shafts through a transition bevel gear set.

Preferably, the stopper inner wall slidable mounting is the connection rope that runs through from top to bottom, the connection rope slides and runs through link block, the connection rope stretches into link up spout fixed connection link up the spout right side wall, the connection rope in accomodate the two inclined plane sliders of inslot fixedly connected with, two inclined plane sliders with accomodate the groove and control lateral wall sliding fit, two inclined plane sliders in accomodate inslot and front and back side support balance plate sliding fit.

Preferably, fixed mounting has the work motor on the transition chamber diapire, work motor upside power connection has the motor shaft, rotate on the lateral wall before the motor chamber and install the power shaft, the power shaft with the motor shaft picture does not do all over power bevel gear group and connects, fixedly connected with bull stick on the power shaft, terminal surface fixedly connected with bolt before the bull stick, the activity chamber with wall body between the transition chamber rotates installs the transmission shaft, the transmission shaft in activity intracavity fixedly connected with lifting gear, lifting gear with sample bucket left side wall meshing connects, the transmission shaft in motor intracavity fixedly connected with sheave, the sheave with bolt sliding fit.

Preferably, the swing shaft is fixedly connected with a connecting gear in the motor cavity, the motor shaft is fixedly connected with a half gear on the lower side of the connecting gear, an annular rack is slidably mounted on the bottom wall of the motor cavity, the upper end surface of the annular rack is meshed and connected with the connecting gear, the inner wall of the annular rack is meshed and connected with the half gear, a belt wheel shaft is rotatably mounted on a wall body between the motor cavity and the belt transmission groove, the belt wheel shaft is connected with the transition shaft through a linking bevel gear group, and the belt wheel shaft is connected with the power shaft in the motor cavity through a connecting belt.

The beneficial effects are that: this device is simple to use, through the activity of propelling rack in the activity control sampling bucket closing plate and the belt drive groove in driving belt, realize sampling bucket's sealed after making sampling bucket go deep into the soil layer to make the soil layer sample can completely collect through atmospheric pressure, guarantee going on of detection achievement, through the cooperation between stripper plate and the solid soil swash plate, guarantee that it is fixed to go deep into the in-process soil layer at sampling bucket.

Drawings

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

FIG. 1 is a schematic view of an agricultural soil layer sampling and collecting device according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic rear sectional view of the motor cavity 52 in fig. 1.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The invention will now be described in detail with reference to fig. 1-3, for the sake of convenience, the orientations described hereinafter being defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The agricultural soil layer sampling and collecting device comprises a shell 11, wherein a movable cavity 12 with a downward opening is arranged in the shell 11, the top wall of the movable cavity 12 is communicated with a lifting groove 13 penetrating through the shell 11, a sampling barrel 17 is arranged on the front side wall and the rear side wall of the lifting groove 13 in a sliding mode, a sampling cavity 19 penetrating up and down is arranged in the sampling barrel 17, the right side wall of the sampling cavity 19 is communicated with a connecting groove 20 penetrating through the sampling barrel 17, an extension block 15 penetrating through the connecting groove 20 is fixedly arranged on the right side wall of the lifting groove 13, a threaded sleeve 14 is rotatably connected to the extension block 15 in the sampling cavity 19, a movable shaft 18 is connected to the threaded sleeve 14 in a threaded mode, a sealing plate 33 is fixedly connected to the lower side of the extension block 15 through the movable shaft 18, a fixed block 31 is rotatably connected to the lower side of the sealing plate 33 through the movable shaft 18, and the fixed block 31 is in sliding fit, the fixed block 31 is provided with vent holes 32 which penetrate through the left side and the right side of the movable shaft 18 up and down, the sealing plate 33 is in sliding fit with the upper end face of the fixed block 31, the sealing plate 33 seals the fixed block 31, the movable shaft 18 is connected with a locking gear 16 on the upper side of the extension block 15 in a sliding manner, the top wall of the shell 11 is provided with a pushing rack 21 on the upper side of the extension block 15 in a sliding manner left and right, the pushing rack 21 is meshed with the locking gear 16, the pushing rack 21 is fixedly connected with a belt wheel shaft 49 on the rear side of the locking gear 16, the shell 11 is provided with a belt transmission groove 37 communicated with the lifting groove 13 on the right side of the movable cavity 12, the top wall of the belt transmission groove 37 is communicated with an upward penetrating connecting sliding groove 22, the top wall of the belt transmission groove 37 is rotatably provided with a transition shaft 24, and the transition shaft 24 is in belt transmission connection with, linking front and rear wall slidable mounting has and stretches into before 22 spout belt drive groove 37's link block 43, link block 43 upwards stretches out linking spout 22 fixed connection advance rack 21, link block 43 in be equipped with the downward and front and back through groove 40 of accomodating of opening in the belt drive groove 37, accomodate groove 40 roof fixed mounting has stopper 38, accomodate groove 40 roof in stopper 38 front and back side symmetry is rotated and is installed and is supported balance plate 42, it passes through spring coupling to support balance plate 42 stopper 38, support balance plate 42 with driving belt 23 contacts, casing 11 in activity chamber 12 rear side is equipped with motor chamber 52, motor chamber 52 with wall body between the activity chamber 12 rotates and installs balance shaft 29, balance shaft 29 runs through and rotates the connection before 12 rear side wall in activity chamber, balance shaft 29 in activity chamber 12 with sampling bucket pendulum rod 17 rotates and is connected with 30 for central front and back symmetry The lower side of the swing link 30 is rotatably connected with an extrusion plate 34.

Beneficially, the housing 11 is provided with gear grooves 27 with opposite openings on the left and right sides of the movable cavity 12, respectively, the housing 11 is provided with a transition cavity 54 on the rear side of the gear groove 27, the transition cavity 54 is located on the lower side of the motor cavity 52, a gear shaft 48 is rotatably mounted on a wall body between the transition cavity 54 and the gear groove 27, the gear shaft 48 is fixedly connected with a linking gear 47 in the gear groove 27, soil fixing inclined plates 26 are symmetrically and slidably mounted on the left and right side walls of the housing 11 up and down, the soil fixing inclined plates 26 seal the gear groove 27, the soil fixing inclined plates 26 are provided with a limiting movable groove 44 with an opening facing the gear groove 27, a driven rack 46 extending into the limiting movable groove 44 is slidably mounted on the bottom wall of the gear groove 27, the driven rack 46 is engaged with the linking gear 47, and a transmission gear 45 is fixedly connected on the right side of the gear shaft 48 in the gear groove, the wall body left and right slidable mounting between activity chamber 12 and gear groove 27 has depression bar rack 28, depression bar rack 28 stretches into activity chamber 12 with pendulum rod 30 sliding fit, depression bar rack 28 in the gear groove 27 with drive gear 45 meshing connects. The compression bar rack 28 is connected with the side wall of the movable cavity 12 through a spring.

Advantageously, a connecting shaft 53 is rotatably mounted on the left and right side walls of the transition cavity 54, and the gear shaft 48 and the connecting shaft 53 are connected through a transition bevel gear set 55.

Beneficially, the inner wall of the limiting block 38 is slidably provided with a connecting rope 39 which penetrates up and down, the connecting rope 39 slides and penetrates through the connecting sliding block 43, the connecting rope 39 extends into the connecting sliding groove 22 and is fixedly connected with the right side wall of the connecting sliding groove 22, the connecting rope 39 is fixedly connected with a double-inclined-surface sliding block 41 in the accommodating groove 40, the double-inclined-surface sliding block 41 is in sliding fit with the left side wall and the right side wall of the accommodating groove 40, and the double-inclined-surface sliding block 41 is in sliding fit with the supporting swinging plate 42 in the accommodating groove 40 and on the front side and the rear side.

Beneficially, a working motor 50 is fixedly installed on the bottom wall of the transition cavity 54, a motor shaft 51 is dynamically connected to the upper side of the working motor 50, a power shaft 57 is rotatably installed on the front side wall of the motor cavity 52, the power shaft 57 and the motor shaft 51 are not connected through a power bevel gear set 56, a rotating rod 58 is fixedly connected to the power shaft 57, a bolt 59 is fixedly connected to the front end face of the rotating rod 58, a transmission shaft 35 is rotatably installed on a wall body between the movable cavity 12 and the transition cavity 54, a lifting gear 36 is fixedly connected to the transmission shaft 35 in the movable cavity 12, the lifting gear 36 is engaged with the left side wall of the sampling barrel 17, a grooved wheel 60 is fixedly connected to the transmission shaft 35 in the motor cavity 52, and the grooved wheel 60 and the bolt 59 are in sliding fit.

Advantageously, the swing shaft 29 is fixedly connected with a connecting gear 65 in the motor cavity 52, the motor shaft 51 is fixedly connected with a half gear 62 at the lower side of the connecting gear 65, an annular rack 61 is slidably mounted on the bottom wall of the motor cavity 52, the upper end surface of the annular rack 61 is in meshing connection with the connecting gear 65, the inner wall of the annular rack 61 is in meshing connection with the half gear 62, a belt wheel shaft 49 is rotatably mounted on the wall body between the motor cavity 52 and the belt transmission groove 37, the belt wheel shaft 49 is connected with the transition shaft 24 through an engaging bevel gear set 25, and the belt wheel shaft 49 is in belt transmission connection with the power shaft 57 in the motor cavity 52 through a connecting belt 63.

In the initial state, the transmission belt 23 is loosened, the sampling barrel 17 is accommodated in the movable cavity 12, the sealing plate 33 does not seal the vent hole 32, and the soil fixing inclined plate 26 is contacted with the side wall of the shell 11;

when the soil sampler starts to work, the shell 11 is placed on the ground, the soil fixing sloping plate 26 is manually pressed down to fix the ground, the working motor 50 is started to drive the motor shaft 51 to rotate, the motor shaft 51 drives the annular rack 61 to reciprocate left and right through the half gear 62, the annular rack 61 drives the connecting gear 65 to enable the swing shaft 29 to rotate periodically and positively and negatively, the swing shaft 29 drives the swing rod 30 to swing, the swing rod 30 swings to enable the extrusion plate 34 to move up and down to be in contact with the ground, so that soil is fixed, the motor shaft 51 drives the power shaft 57 to rotate through the power bevel gear set 56, the power shaft 57 drives the plug 59 to rotate through the rotating rod 58, the plug 59 is in sliding fit with the grooved pulley 60, the grooved pulley 60 intermittently rotates to drive the transmission shaft 35 to rotate, the transmission shaft 35 drives the sampling barrel 17 to move down through the lifting gear 36, the sampling barrel 17 goes deep into, the soil-fixing sloping plate 26 slides towards the side far away from the shell 11, the swing rod 30 drives the compression rod rack 28 to slide when swinging, the compression rod rack 28 drives the right gear shaft 48 to rotate through the transmission gear 45, the right gear shaft 48 drives the connecting shaft 53 to rotate through the transition bevel gear 55, the connecting shaft 53 drives the left gear shaft 48 to rotate through the transition bevel gear 55, the left gear shaft 48 and the right gear shaft 48 drive the driven rack 46 to slide through the connecting gear 47, the driven rack 46 drives the soil-fixing sloping plate 26 to slide towards the shell 11 while the fixed block 31 moves downwards, so as to ensure soil layer fixation, when the sampling barrel 17 extends into enough depth, the pushing rack 21 is manually pushed, the pushing rack 21 drives the movable shaft 18 to rotate through the locking gear 16, the movable shaft 18 drives the sealing plate 33 to rotate, the sealing plate 33 seals the vent hole 32, the pushing rack 21 drives the connecting slider 43 to slide, the supporting swing, the double-inclined-plane sliding block 41 is in contact with the front and rear side supporting swing plates 42, the supporting swing plates 42 support the transmission belt 23, the transmission belt 23 is tensioned, the working motor 50 rotates reversely, the power shaft 57 drives the belt wheel shaft 49 to rotate through the connecting belt 63, the belt wheel shaft 49 drives the transition shaft 24 to rotate through the connecting bevel gear set 25, the transition shaft 24 drives the threaded sleeve 14 to rotate through the transmission belt 23, the threaded sleeve 14 drives the movable shaft 18 to move upwards, the belt wheel shaft 49 limits the locking gear 16 to move upwards, the lifting gear 36 drives the sampling barrel 17 to move upwards, the moving speed of the movable shaft 18 of the belt wheel shaft 49 is higher than that of the sampling barrel 17, it is ensured that the space between the fixed block 31 and the soil layer is sealed, and the soil layer sample.

After the work is finished, the sampling barrel 17 is manually drawn out, soil layer samples are taken down, the working motor 50 is rotated positively and then is closed, the sampling barrel 17 is installed again, the connecting chute 22 is drawn out, the soil fixing inclined plate 26 is drawn out upwards, and the device is restored to the initial state.

Has the advantages that: this device is simple to use, through the activity of propelling rack in the activity control sampling bucket closing plate and the belt drive groove in driving belt, realize sampling bucket's sealed after making sampling bucket go deep into the soil layer to make the soil layer sample can completely collect through atmospheric pressure, guarantee going on of detection achievement, through the cooperation between stripper plate and the solid soil swash plate, guarantee that it is fixed to go deep into the in-process soil layer at sampling bucket.

The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides an agricultural soil layer sampling collection device, includes the casing, its characterized in that: the sampling device is characterized in that a movable cavity with a downward opening is arranged in the shell, the top wall of the movable cavity is communicated with a lifting groove penetrating through the shell, a sampling barrel is slidably mounted on the front side wall and the rear side wall of the lifting groove in a rear sliding manner, a sampling cavity penetrating up and down is arranged in the sampling barrel, the right side wall of the sampling cavity is communicated with a connecting groove penetrating through the sampling barrel, an extension block penetrating through the connecting groove is fixedly mounted on the right side wall of the lifting groove, the extension block is rotatably connected with a threaded sleeve in the sampling cavity, a movable shaft is in threaded connection with a movable shaft, a sealing plate is fixedly connected to the lower side of the extension block, a fixed block is rotatably connected to the lower side of the sealing plate, the fixed block is in sliding fit with the inner wall of the sampling cavity, vent holes penetrating up and down are arranged on the left side and the, the sealing plate seals the fixed block, the movable shaft is connected with a locking gear on the upper side of the extension block in a sliding manner, the top wall of the shell is provided with a propelling rack on the upper side of the extension block in a left-right sliding manner, the propelling rack is connected with the locking gear in a meshing manner, the propelling rack is fixedly connected with a belt wheel shaft on the rear side of the locking gear, the shell is provided with a belt transmission groove communicated with the lifting groove on the right side of the movable cavity, the top wall of the belt transmission groove is communicated with an upward through linking sliding groove, the top wall of the belt transmission groove is rotatably provided with a transition shaft, the transition shaft is connected with the threaded sleeve through a transmission belt in a transmission manner, the front wall and the rear wall of the linking sliding groove are provided with a connecting slide block extending into the belt transmission groove in a sliding manner, the connecting slide block extends upwards out of the linking sliding groove and is fixedly connected with the propelling rack, and the connecting, accomodate groove roof fixed mounting has the stopper, accomodate the groove roof in lateral symmetry rotates around the stopper and installs and support the balance weight, it passes through spring coupling to support the balance weight the stopper, support the balance weight the board with the driving belt contacts, the casing in activity chamber rear side is equipped with the motor chamber, the motor chamber with wall body between the activity chamber rotates installs the balance shaft, the balance shaft runs through and swivelling joint lateral wall around the activity chamber, the balance shaft in activity intracavity with the sampling bucket rotates as central front and back symmetry and is connected with the pendulum rod, the pendulum rod downside rotates and is connected with the stripper plate.

2. The agricultural soil layer sampling and collecting device of claim 1, wherein: the shell is provided with gear grooves with back-to-back openings on the left side and the right side of the movable cavity respectively, the shell is provided with a transitional cavity on the rear side of the gear groove, the transitional cavity is positioned on the lower side of the motor cavity, a gear shaft is rotatably arranged on a wall body between the transitional cavity and the gear groove, the gear shaft is fixedly connected with a linking gear in the gear groove, the left side wall and the right side wall of the shell are symmetrically provided with soil fixing inclined plates in a vertical sliding manner, the soil fixing inclined plates seal the gear groove, the soil fixing inclined plates are provided with limiting movable grooves with openings facing the gear groove, the bottom wall of the gear groove is provided with driven racks extending into the limiting movable grooves in a sliding manner, the driven racks are meshed with the linking gear, the right side wall of the gear shaft is fixedly connected with a transmission gear in the gear groove, and the wall body between the movable cavity, the pressing rod rack extends into the movable cavity and is in sliding fit with the swing rod, the pressing rod rack is meshed and connected with the transmission gear in the gear groove, and the pressing rod rack is connected with the side wall of the movable cavity through a spring.

3. The agricultural soil layer sampling and collecting device of claim 2, wherein: and the left side wall and the right side wall of the transition cavity are rotatably provided with connecting shafts, and the gear shaft is connected with the connecting shafts through a transition bevel gear set.

4. The agricultural soil layer sampling and collecting device of claim 1, wherein: the stopper inner wall slidable mounting is the connection rope that runs through from top to bottom, the connection rope slides and runs through link block, the connection rope stretches into link up spout fixed connection link up spout right side wall, the connection rope in accomodate the two inclined plane sliders of inslot fixedly connected with, two inclined plane sliders with accomodate the groove and control lateral wall sliding fit, two inclined plane sliders in accomodate inslot and front and back side support balance board sliding fit.

5. The agricultural soil layer sampling and collecting device of claim 1, wherein: fixed mounting has the work motor on the transition chamber diapire, work motor upside power connection has the motor shaft, rotate on the lateral wall before the motor chamber and install the power shaft, the power shaft with the motor shaft picture does not do all over the connection of power bevel gear group, fixedly connected with bull stick on the power shaft, terminal surface fixedly connected with bolt before the bull stick, the activity chamber with wall body between the transition chamber rotates installs the transmission shaft, the transmission shaft in activity intracavity fixedly connected with lifting gear, lifting gear with sample bucket left side wall meshing is connected, the transmission shaft in motor intracavity fixedly connected with sheave, the sheave with bolt sliding fit.

6. The agricultural soil layer sampling and collecting device of claim 5, wherein: the pendulum shaft in motor intracavity fixedly connected with connecting gear, the motor shaft in connecting gear downside fixedly connected with semi-gear, slidable mounting has annular rack on the motor chamber diapire, annular rack up end with connecting gear meshing connects, annular rack inner wall with semi-gear meshing connects, the motor chamber with wall body between the belt drive groove rotates installs the band pulley axle, the band pulley axle with the transition axle is through linking bevel gear group link, the band pulley axle in the motor intracavity with the power shaft is through connecting belt transmission and connecting.