CN114223350A

CN114223350A - Greening garden is with device of digging pit

Info

Publication number: CN114223350A
Application number: CN202210053287.9A
Authority: CN
Inventors: 马在勇
Original assignee: Individual
Current assignee: Jiangsu Jiangshan Landscape Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-03-25
Anticipated expiration: 2042-01-18
Also published as: CN114223350B

Abstract

The invention relates to the field of landscaping, in particular to a pit digging device for greening gardens. The technical problem to be solved is as follows: the utility model provides a can dig the hole automatically, can fix the tree that needs bury soil to can bury the afforestation gardens of soil automatically with digging the device. The technical scheme of the invention is as follows: a pit digging device for greening gardens comprises a bottom plate, rollers, a support frame, a hydraulic cylinder, a support plate, a telescopic rod, a motor frame and the like; install four gyro wheels on the bottom plate, the rigid coupling has the support frame on the bottom plate, installs the pneumatic cylinder on the support frame, and the telescopic shaft lower extreme rigid coupling of pneumatic cylinder has the supporting disk, and the rigid coupling of annular array has four telescopic links on the supporting disk, the top of four telescopic links all with the support frame rigid coupling. The utility model provides a afforestation gardens are with device of digging pit, this device can realize automatic processing of digging pit when carrying out afforestation, has avoided artifical shortcoming that digging pit is wasted time and energy, has improved the efficiency of digging pit.

Description

Greening garden is with device of digging pit

Technical Field

The invention relates to the field of landscaping, in particular to a pit digging device for greening gardens.

Background

Various public infrastructure construction that city life is supporting all belong to the municipal works category, urban afforestation needs carry out a large amount of plant species plants work, it can accelerate planting technique efficiency to utilize mechanization, wherein, the earth boring machine is main machinery, the earth boring machine lets people liberate from tedious manual work, wide application in afforestation, it is more time-consuming and laboursome when digging the pit to artifically, efficiency is lower, and need artifical manual the tree with holding up when planting the tree, it is more to occupy manpower resources, then bury the soil by other people to the hole, still it is more time-consuming and energy-consuming when artifical the soil is buried.

In the prior art scheme that has been disclosed, chinese patent with application number 202021084802.2 discloses a digging device for landscaping, wherein a cylinder 3, a spring 4 and a pulley 5 are installed at the bottom end of a bottom plate 1 in the digging device for landscaping, so as to facilitate the movement of the device, a first threaded rod 6, a fixed plate 7 and a fixed rod 8 are arranged on the bottom plate 1, and the fixed rod 8 can be inserted into the ground by rotating the first threaded rod 6, so as to facilitate the fixation of the device; the inboard fixed frame 17 that is equipped with of mount 2, fixed frame 17 inboard is equipped with second threaded rod 13 and slider 18, first motor 11 makes second threaded rod 13 rotate through third gear 16, second gear 14 and first gear 12, the height of the backup pad 19 of being convenient for control, conveniently dig the hole through drilling rod 21 and spiral leaf 22, control panel 24 conveniently controls the rotation of first motor 11, be convenient for control the degree of depth and the speed of digging the hole, can effectively improve the efficiency and the effect of digging the hole. The invention has reasonable structure and simple operation, is convenient for landscaping pit digging operation, effectively improves pit digging efficiency and lightens labor intensity of workers.

The inventor considers that the technical scheme has the following problems: although this technical scheme can realize automatic digging pit, has improved digging pit efficiency, when planting the tree, still need the manual work to bury the soil into the hole of digging when the manual work is put into the hole of digging with the tree, still it is more laborious when the manual work is to the hole in-fill to need the manual work to hold up the tree when burying the tree, occupy manpower resources, and this technical scheme can not clear up spiral leaf 22.

In the prior art scheme that has disclosed, chinese patent with application number 202022177708.8 discloses a digging device for afforestation, this digging device for afforestation is when using, the staff can insert staple 12 into ground earlier, then start control motor 4 and hydraulic push rod 6, then hydraulic push rod 6 can drive rotary cutter 5 and move downwards, the processing of digging pit to ground, do not need the manual work to press, greatly reduce staff's intensity of labour, and improve work efficiency, and dig the in-process, damping spring 2 can play the cushioning effect, reduce control motor 4's vibration, improve the device's stability, make the work of digging pit go on in order, reduce the probability of electrical apparatus damage, prolong its life.

The inventor considers that the technical scheme has the following problems: although this technical scheme can be to digging pit, improved the efficiency of artifical digging pit, be the technical scheme who is favorable to improving artifical afforestation efficiency, but when planting the tree, still need artifical hand to hold the tree behind digging pit, occupy manpower resources to still need manually to fill into the pit with soil, then artifical manual fill out to the pit, artifical fill out efficiency is lower, and it is harder, and this technical scheme can not clear up rotary cutter 5.

In the prior art that has been disclosed, chinese patent with application number 201621082128.8 discloses a tree planting earth boring machine, the invention provides a novel tree planting earth boring machine, a first motor 9 is started, the first motor 9 drives a third gear 10 to rotate, the third gear 10 drives a short rod 7 to rotate through a second gear 8, the second gear 8 drives two first gears 6 to rotate at the same time, the two first gears 6 drive corresponding drill rods 5 to rotate, a second motor 12 drives a steering rod 13 to rotate, the steering rod 13 drives two cams 14 to rotate, the two cams 14 drive the drill rods 5 to move downwards under the cooperation of corresponding U-shaped blocks 11, so that the two drill rods 5 perform earth boring work at the same time, and the work efficiency is greatly improved.

The inventor considers that the technical scheme has the following problems: although this technical scheme can be to digging pit, improved the efficiency of artifical digging pit, be the technical scheme who is favorable to improving artifical afforestation efficiency, but when planting the tree, still need artifical hand to hold the tree behind digging pit, occupy manpower resources to still need manually to fill into the hole with soil, then artifical manual fill out to the hole in, artifical fill out efficiency is lower, and it is more hard, and this technical scheme can not clear up drilling rod 5.

The earth boring machine among the prior art can only be solitary dig the hole, still needs artifical manual tree of holding to bury soil, occupies manpower resources to still need artifical manual soil of burying, the manual work is buried soil and is wasted time and energy, has consequently invented one kind and can dig the hole automatically, can fix the tree that needs buried soil, and can bury a afforestation gardens of soil automatically with digging device.

Disclosure of Invention

In order to overcome the earth boring machine among the prior art can only be solitary dig the hole, still need artifical manual tree of holding to bury soil, occupy manpower resources to still need artifical manual soil of burying, the artifical shortcoming of wasting time and energy of burying soil, the technical problem that solves is: the utility model provides a can dig the hole automatically, can fix the tree that needs bury soil to can bury the afforestation gardens of soil automatically with digging the device.

The technical scheme of the invention is as follows: the utility model provides a afforestation gardens are with device of digging pit, comprising a base plate, the gyro wheel, the support frame, the pneumatic cylinder, the supporting disk, the telescopic link, the motor frame, motor power, conveying pole and discharge mechanism, install four gyro wheels on the bottom plate, the rigid coupling has the support frame on the bottom plate, install the pneumatic cylinder on the support frame, the telescopic shaft lower extreme rigid coupling of pneumatic cylinder has the supporting disk, the rigid coupling of annular array has four telescopic links on the supporting disk, the top of four telescopic links all with the support frame rigid coupling, supporting disk bottom rigid coupling has the motor frame, install motor power on the motor frame, the rigid coupling has the conveying pole in motor power's the pivot, be connected with discharge mechanism on the bottom plate, discharge mechanism can collect the soil of digging out and can bury the hole automatically.

Further, discharge mechanism is including the backup pad, the material loading pipe, the storage case, the feed bin down, the unloading pipe, the discharging pipe, ejection of compact motor and discharge bar, the rigid coupling of symmetry has two backup pads on the bottom plate, be connected with the material loading pipe on the bottom plate, common rigid coupling has the storage case on two backup pads and the material loading pipe, storage case and material loading pipe intercommunication, the rigid coupling of bilateral symmetry has two feed bins down on the bottom plate, all communicate on the feed bin down and have a discharge pipe, the front side of discharge pipe all communicates there is the discharging pipe, the rigid coupling of bilateral symmetry has two ejection of compact motors on the bottom plate, all install the discharge bar in the pivot of ejection of compact motor, the discharge bar all is located the feed bin of homonymy, the one end of keeping away from ejection of compact motor on the discharge bar is all installed in the feed bin of homonymy.

Further, still including fixed establishment, fixed establishment is including the fixed plate, first fixed axle, fixed gear, the dead lever, the control lever, the axis of rotation, the rotation torsional spring, first fixed block and stop gear, the rigid coupling has the fixed plate on the bottom plate, the fixed plate is with the equal rigid coupling of two discharging pipes, the rotation of symmetry is connected with two first fixed axles on the fixed plate, equal rigid coupling has fixed gear on the first fixed axle, two fixed gear meshes, the equal rigid coupling of symmetry has the dead lever on the first fixed axle, the rigid coupling has the control lever on the dead lever on right side, all rotate on every dead lever and be connected with two axis of rotation, the rotation torsional spring is all installed to the last downside of every axis of rotation, the rotation torsional spring all is connected with axis of rotation and dead lever, equal rigid coupling has first fixed block in the axis of rotation, be connected with stop gear on the dead lever, stop gear can restrict the fixed gear and rotate.

Further, stop gear is including first gag lever post, spacing rack, limit slide, first slide bar, first spring, the second slide bar, the second spring, the reset block, release link and reset spring, sliding connection has first gag lever post on the fixed plate, the downside rigid coupling of first gag lever post has spacing rack, the right side sliding connection of first gag lever post has limit slide, limit slide downside rigid coupling has first slide bar, first slide bar and first gag lever post sliding connection, the cover has first spring on the first slide bar, the left side sliding connection of first gag lever post has the second slide bar, second slide bar and fixed plate rigid coupling, the cover has the second spring on the second slide bar, the rigid coupling has the reset block on the fixed plate, sliding connection has the release link on the reset block, the cover has reset spring on the reset link.

Further, the cleaning device comprises a cleaning mechanism, the cleaning mechanism comprises a cleaning frame, cleaning shafts, cleaning bristles, a starting rod, a second limiting rod, limiting springs, a third limiting block and an adjusting mechanism, two cleaning chutes are symmetrically formed in a supporting frame, the two cleaning chutes are connected with the cleaning frame in a sliding mode together, the cleaning frame is connected with the two cleaning shafts in a bilateral symmetry mode, the cleaning bristles are mounted on the cleaning shafts, the cleaning frame is symmetrically connected with the starting rod, the cleaning frame is symmetrically provided with two limiting grooves, the limiting grooves are connected with the second limiting rod in a sliding mode, the limiting grooves are both provided with the limiting springs, the second limiting rod is connected with the third limiting block, the third limiting block is provided with limiting holes, the starting rod is connected with the limiting holes on the same side in a sliding mode, the second limiting rod can limit the third limiting block by sliding into the limiting holes, the cleaning frame is connected with the two adjusting mechanisms in a bilateral symmetry mode, the third limiting block is connected with the cleaning frame through an adjusting mechanism, and the adjusting mechanism can control the direction of the cleaning axial conveying rod to be close to the cleaning axial conveying rod.

Further, the adjusting mechanism comprises a connecting rod, a connecting shaft, a connecting spring, a connecting block, a pushing block, a first limiting block, a sliding block, a second fixing block, a third fixing block, a second fixing shaft, a third spring, a fourth limiting block, a first rack, a fifth limiting block, a second rack, a limiting shaft and a limiting gear, wherein the two connecting rods are symmetrically fixedly connected to the bottom end of the cleaning frame, the two connecting shafts are fixedly connected to the connecting rod, the connecting shafts are slidably connected to the cleaning shafts at the same side, the connecting shafts are sleeved with the connecting springs, the connecting block is fixedly connected to the bottom end of the third limiting block, the pushing block is fixedly connected to the front side and the rear side of the connecting block, the first limiting block is fixedly connected to one end of the connecting block facing the conveying rod, the sliding block is fixedly connected to the front side and the rear side of the first limiting block, the two second fixing blocks are fixedly connected to the cleaning frame, the two third fixing blocks are fixedly connected to the cleaning frame, the second fixed block is symmetrical with the third fixed block of homonymy from front to back, equal rigid coupling has the second fixed axle on second fixed block and the third fixed block, it has the third spring all to overlap on the second fixed axle, equal sliding connection has the fourth stopper on the second fixed axle of connecting on the second fixed block, the fourth stopper all with clearance frame sliding connection, equal rigid coupling has first rack on the fourth stopper, equal sliding connection has the fifth stopper on the second fixed axle of connecting on the third fixed block, the fifth stopper all with clearance frame sliding connection, equal rigid coupling has the second rack on the fifth stopper, it is connected with spacing axle all to rotate on the linking piece, equal rigid coupling has spacing gear on the spacing axle, spacing gear all meshes with the first rack and the second rack of homonymy.

Further, still including complementary unit, complementary unit is including supplementary piece, supplementary guide rail, supplementary bucket, stationary dog, and bottom plate bottom bilateral symmetry ground rigid coupling has two supplementary pieces, rotates jointly on two supplementary pieces and connects the auxiliary rod, is connected with two supplementary guide rails on the auxiliary rod, and the common rigid coupling of two supplementary guide rails has supplementary bucket, and the rigid coupling of supplementary bottom of the barrel portion annular array has six stationary dogs.

The beneficial effects are that: a digging device for afforestation gardens can realize automatic digging treatment when afforestation is carried out, the defects that manual digging is time-consuming and labor-consuming are avoided, digging efficiency is improved, soil conveyed by a conveying rod can be collected through a discharging mechanism, the collected soil can be automatically filled into a pit when needed, a fixing mechanism can help workers to fix trees when the trees in the pit need to be filled, manpower resources are saved, tree toppling can be effectively prevented, the fixing mechanism can fix trees with larger diameters through a limiting mechanism, the workers can use the digging device more flexibly and conveniently, the conveying rod can be cleaned through a cleaning mechanism, manual cleaning steps are omitted, meanwhile, the service life of the conveying rod can be prolonged through cleaning the conveying rod, a cleaning shaft can be prevented from being too close to the conveying rod in the descending process through an adjusting mechanism, lead to the clearance brush hair can be because produce buckle and can't be with conveying pole full contact to lead to influencing the clearance effect, can prevent through complementary unit that soil can drop in the bottom plate below at the in-process of conveying upwards, can make simultaneously that conveying pole can be better convey soil to the storage case in.

Drawings

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

Fig. 2 is a schematic position diagram of the discharging mechanism of the invention.

Fig. 3 is a schematic view of the position of the discharge bar of the present invention.

Fig. 4 is a schematic view of the connection relationship of the fixing rods of the present invention.

Fig. 5 is a cross-sectional view of the fixing rod of the present invention.

Fig. 6 is an enlarged schematic view of the invention at a.

Fig. 7 is a schematic cross-sectional view of the supporting frame of the present invention.

Fig. 8 is a schematic diagram of the position relationship of the adjusting mechanism of the present invention.

Fig. 9 is a schematic view of the connection relationship of the adjusting mechanism of the present invention.

FIG. 10 is a schematic view of the connection relationship of the limit gears of the present invention.

FIG. 11 is a schematic diagram of the position relationship of the auxiliary rod according to the present invention.

Fig. 12 is a schematic view of the overall structure of the auxiliary bucket of the present invention.

Fig. 13 is a schematic cross-sectional view of the bottom plate of the present invention.

Reference numerals: 1 bottom plate, 2 rollers, 3 support frames, 4 hydraulic cylinders, 5 support plates, 6 telescopic rods, 7 motor frames, 8 power motors, 9 transmission rods, 10 support plates, 1001 feeding pipes, 11 storage boxes, 12 discharging bins, 13 discharging pipes, 14 discharging pipes, 15 discharging motors, 16 discharging rods, 17 fixing plates, 18 first fixing shafts, 19 fixing gears, 20 fixing rods, 2001 control rods, 21 rotating shafts, 22 rotating torsion springs, 23 first fixing blocks, 24 first limiting rods, 2401 limiting racks, 25 limiting sliding blocks, 26 first sliding rods, 27 first springs, 28 second sliding rods, 29 second springs, 30 resetting blocks, 31 resetting rods, 32 resetting springs, 33 clearing chutes, 34 clearing frames, 35 clearing shafts, 3501 clearing bristles and 36 starting rods, 3601 limiting groove, 37 second limiting rod, 38 limiting spring, 39 third limiting block, 40 limiting hole, 4001 connecting rod, 4002 connecting shaft, 4003 connecting spring, 41 connecting block, 4101 pushing block, 42 first limiting block, 43 sliding block, 44 second fixing block, 4401 third fixing block, 45 second fixing shaft, 46 third spring, 47 fourth limiting block, 4701 first rack, 48 fifth limiting block, 4801 second rack, 49 limiting shaft, 50 limiting gear, 51 auxiliary block, 52 auxiliary rod, 53 auxiliary guide rail, 54 auxiliary barrel and 55 fixing claw.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

Example 1

A digging device for greening gardens is disclosed, as shown in figures 1-3, comprising a bottom plate 1, rollers 2, a support frame 3, a hydraulic cylinder 4, a support plate 5, an expansion link 6, a motor frame 7, a power motor 8, a transmission rod 9 and a discharging mechanism, wherein four rollers 2 are arranged on the bottom plate 1, the support frame 3 is fixedly connected on the bottom plate 1, the support frame 3 mainly plays a supporting role, the hydraulic cylinder 4 is arranged on the support frame 3, the support plate 5 is fixedly connected at the lower end of an expansion shaft of the hydraulic cylinder 4, the annular array of the support plate 5 is fixedly connected with four expansion links 6, the tops of the four expansion links 6 are fixedly connected with the support frame 3, the stability of the support plate 5 can be kept through the matching of the four expansion links 6 and the hydraulic cylinder 4, the motor frame 7 is fixedly connected at the bottom end of the support plate 5, the power motor 8 is arranged on the motor frame 7, and is used for preventing soil from being adhered to a motor shell when digging a pit, a conveying rod 9 is fixedly connected to a rotating shaft of the power motor 8, a discharging mechanism is connected to the bottom plate 1, and the discharging mechanism can collect dug soil and can automatically bury the pit.

When the tree needs to be buried, the device is manually moved to the position of the ground needing to be buried, the transmission rod 9 is positioned right above the position needing to be buried, then the power motor 8 is started, the rotating shaft of the power motor 8 can drive the transmission rod 9 to rotate together, then the hydraulic rod is started to extend downwards, so that the support plate 5 is driven to move downwards, the telescopic rod 6 is driven to extend out, the support plate 5 is prevented from being unbalanced, the power motor 8 and the transmission rod 9 are driven to move downwards synchronously, when the transmission rod 9 is contacted with the ground and continues to move downwards, the pit is dug, the dug soil is transmitted to the material inlet and outlet mechanism, when the tree is placed in the pit and needs to be buried, the discharge position of the material outlet mechanism is aligned with the pit needing to be buried, then the material outlet mechanism is started, the dug soil is transmitted into the pit by the material outlet mechanism, so that the root of the tree in the pit is buried, thereby burying the pit.

Example 2

On the basis of embodiment 1, as shown in fig. 2 and fig. 3, the discharging mechanism comprises a supporting plate 10, a feeding pipe 1001, a storage box 11, a discharging bin 12, a discharging pipe 13, a discharging pipe 14, a discharging motor 15 and a discharging rod 16, wherein two supporting plates 10 are symmetrically and fixedly connected to a bottom plate 1, the feeding pipe 1001 is connected to the bottom plate 1, the feeding pipe 1001 is communicated with the bottom plate 1, the storage box 11 is fixedly connected to the two supporting plates 10 and the feeding pipe 1001, the storage box 11 is communicated with the feeding pipe, two discharging bins 12 are fixedly connected to the bottom plate 1 in a left-right symmetrical manner, the discharging bins 12 are communicated with the bottom of the storage box 11, the discharging pipes 13 are communicated to the discharging bins 12, the discharging pipes 14 are communicated to the front sides of the discharging pipes 13, the two discharging pipes 13 and the two discharging pipes 14 are symmetrically installed, two discharging motors 15 are fixedly connected to the bottom plate 1 in a left-right symmetrical manner, the discharging rods 16 are installed on the rotating shafts of the discharging motors 15, the shape of the discharging rod 16 is similar to that of a screw rod, the discharging rods 16 are located in the discharging pipes 13 on the same side, and one ends, far away from the discharging motor 15, of the discharging rods 16 are installed in the discharging bins 12 on the same side.

When the conveying rod 9 is in contact with the ground and continues to move downwards, the conveying rod 9 conveys soil upwards, because the conveying rod 9 passes through the feeding pipe 1001, only when the soil on the conveying rod 9 is located above the feeding pipe 1001, namely in the space in the storage box 11, the soil on the conveying rod 9 is thrown into the storage box 11 due to inertia, so that the soil also enters the discharging bins 12 on the two sides, the soil excavated by the conveying rod 9 is collected, when trees are placed in the pit and the pit needs to be filled, the position of the bottom plate 1 is adjusted, the discharging pipes 14 on the two sides are located on the two sides of the pit, then the discharging motors 15 on the two sides are started, so that the rotating shafts of the discharging motors 15 drive the discharging rods 16 to rotate together, so that the discharging rods 16 rotate the soil in the discharging bins 12 towards the discharging motors 15 through the discharging pipes 13, and when the soil on the discharging rods 16 is conveyed to the positions of the discharging pipes 14, soil can't be conveyed to the direction of ejection of compact motor 15 again this moment, thereby the position of discharging pipe 14 of soil meeting is conveyed out this moment to soil enters into and buries the root of tree in the hole, thereby buries the hole, can save the step of artifical landfill through discharge mechanism, has improved the efficiency of planting the tree and filling the hole.

Example 3

On the basis of embodiment 2, as shown in fig. 1, 4 and 5, the present invention further comprises a fixing mechanism, the fixing mechanism comprises a fixing plate 17, a first fixing shaft 18, a fixed gear 19, a fixing rod 20, a control rod 2001, a rotating shaft 21, a rotating torsion spring 22, a first fixing block 23 and a limiting mechanism, the fixing plate 17 is fixedly connected to the bottom plate 1, the fixing plate 17 is fixedly connected to both of the discharging pipes 14, two first fixing shafts 18 are symmetrically and rotatably connected to the fixing plate 17, the fixed gears 19 are fixedly connected to the first fixing shafts 18, the two fixed gears 19 are engaged with each other, the fixing rods 20 are symmetrically and fixedly connected to the first fixing shafts 18, so that when one of the fixed gears 19 rotates, the other fixed gear 19 rotates in the opposite direction, the control rod 2001 is fixedly connected to the fixing rod 20 on the right side, two rotating shafts 21 are rotatably connected to each fixing rod 20, the two rotating shafts 21 on the left side are symmetrical to the two rotating shafts 21 on the right side, the upper side and the lower side of each rotating shaft 21 are respectively provided with a rotating torsion spring 22, each rotating torsion spring 22 is connected with the rotating shaft 21 and the fixing rod 20, the rotating shaft 21 is fixedly connected with first fixing blocks 23, the four first fixing blocks 23 can be closed to form a circular cylinder, and the fixing rod 20 is connected with a limiting mechanism which can limit the rotation of the fixing gear 19.

When a tree needs to be buried in a pit, the control rod 2001 is manually held and the control rod 2001 is pulled to the right side, so that the fixed shaft on the right side is driven to rotate by the fixed rod 20, the fixed gear 19 on the right side is driven to rotate, the fixed gear 19 on the left side and the fixed gear 19 on the right side are driven to rotate in opposite directions, so that the fixed rod 20 on the left side is driven to rotate to the left side, the two fixed rods 20 are opened to form a V shape, the opening angle of the two fixed rods 20 can be increased when the diameter of the tree is larger, the bottom plate 1 is manually moved when the proper angle is adjusted, the first fixed blocks 23 on the two sides are moved to the direction close to the tree, and when the proper position is moved, the control rod 2001 is manually held and the control rod 2001 is rotated to the left side, so that the angle between the two fixed rods 20 is decreased, when four first fixed blocks 23 contact with the tree, first fixed block 23 can be under the torsion effect of rotating torsional spring 22 this moment, all can rotate to the middle part and press from both sides tightly the tree through axis of rotation 21, axis of rotation 21 also can carry out adaptability according to the thickness of tree simultaneously and rotate, when can press from both sides tightly the tree, artifical stop gear that starts this moment, can restrict fixed gear 19 through stop gear and rotate, thereby prevent to rotate two dead levers 20 of tree to the direction of keeping away from the tree, thereby can continuously press from both sides the tree tightly, then can start discharge mechanism and bury to the hole, after burying root and hole with the tree, make stop gear cancel the spacing to fixed gear 19 this moment, thereby can loosen the clamp to the tree, can press from both sides tightly the tree through fixed mechanism, need artifical tree support when having avoided planting the tree, manpower resources have been saved.

As shown in fig. 5 and 6, the limiting mechanism includes a first limiting rod 24, a limiting rack 2401, a limiting slider 25, a first sliding rod 26, a first spring 27, a second sliding rod 28, a second spring 29, a reset block 30, a reset rod 31 and a reset spring 32, the fixed plate 17 is slidably connected with the first limiting rod 24, the lower side of the first limiting rod 24 is fixedly connected with the limiting rack 2401, the limiting rack 2401 can be inserted between two teeth of the fixed gear 19, the right side of the first limiting rod 24 is slidably connected with the limiting slider 25, the limiting slider 25 can slide on the first limiting rod 24 but cannot fall off, the lower side of the limiting slider 25 is fixedly connected with the first sliding rod 26, the first sliding rod 26 is slidably connected with the first limiting rod 24, the first sliding rod 26 can slide on the first limiting rod 24 but cannot fall off, the first spring 27 is sleeved on the first sliding rod 26, the left side of the first limiting rod 24 is slidably connected with the second sliding rod 28, first gag lever post 24 can not drop from second slide bar 28, second slide bar 28 and fixed plate 17 rigid coupling, the cover has second spring 29 on the second slide bar 28, second spring 29 can provide the power that resets for first gag lever post 24, the rigid coupling has reset block 30 on the fixed plate 17, sliding connection has release link 31 on reset block 30, sliding connection has reset rod 31 on reset block 30, reset block 30 can carry out spacingly to spacing slider 25, reset rod 31 can help spacing slider 25 to reset, the cover has reset spring 32 on reset rod 31.

When the fixed gear 19 needs to be limited, the first limiting rod 24 is manually pressed downwards, so that the second spring 29 is compressed, the limiting rack 2401 is driven to move downwards, the limiting rack 2401 slides towards the positions between the teeth of the fixed gear 19, if the situation that the insertion between the teeth of the fixed gear 19 is not normal, the first limiting rod 24 is manually pressed downwards after the gear is adjusted by the fixing rod 20 in a small amplitude, the effect of clamping the tree is not influenced, the limiting rack 2401 is clamped between the teeth of the fixed gear 19 on the right side, so that the rotation of the two fixed gears 19 can be limited simultaneously, when the limiting slide block 25 is in contact with the reset block 30 and continuously moves downwards, the limiting slide block 25 slides towards the direction far away from the reset block 30, so that the first slide bar 26 is driven to slide towards the direction far away from the reset block 30, meanwhile, the first spring 27 is compressed, when the lower end of the limiting slide block 25 moves to the lower side of the reset block 30, the first spring 27 pushes the limiting slide block 25 to reset, so that the reset block 30 can limit the limiting slide block 25 to reset upwards, so that the first limiting rod 24 can be limited to reset upwards, at the same time, the limiting rack 2401 is clamped between teeth of the fixed gear 19 on the right side, when the limitation on the fixed gear 19 on the right side needs to be cancelled, the reset rod 31 is manually pressed towards the direction close to the first limiting rod 24, the reset spring 32 is compressed, the limiting slide block 25 is moved towards the direction far away from the reset rod 31 through the reset rod 31, so that the limiting slide block 25 is separated from the lower side of the reset block 30, so that the reset block 30 does not limit the limiting slide block 25 to reset upwards any more, so that the first limiting rod 24 is not limited to reset upwards, at the moment, the compressed second spring 29 pushes the first limiting rod 24 to move upwards, thereby drive spacing rack 2401 and reset upwards to make spacing rack 2401 no longer restrict fixed gear 19 and rotate, thereby can loosen the clamp to the tree, can carry out spacingly through stop gear to fixed gear 19, can restrict dead lever 20 through spacing to fixed gear 19 and rotate, thereby can remain throughout and press from both sides tightly to the tree, and can adapt to the clamp of the tree to different thicknesses tightly.

Referring to fig. 3, 7 and 8, the cleaning device further comprises a cleaning mechanism, the cleaning mechanism comprises a cleaning frame 34, a cleaning shaft 35, cleaning bristles 3501, a starting rod 36, a second limiting rod 37, a limiting spring 38, a third limiting block 39 and an adjusting mechanism, two cleaning chutes 33 are symmetrically formed in the supporting frame 3, the two cleaning chutes 33 are respectively formed in the left inner wall and the right inner wall of the supporting frame 3, the cleaning frame 34 is jointly and slidably connected in the two cleaning chutes 33, the cleaning frame 34 mainly plays a role in connection and support, the cleaning frame 34 is bilaterally and symmetrically connected with the two cleaning shafts 35, the cleaning bristles 3501 are respectively mounted on the cleaning shafts 35, the cleaning frame 34 is symmetrically connected with the starting rod 36, the starting rod 36 is used for pushing the second limiting rod 37 into the limiting groove 3601, the cleaning frame 34 is symmetrically formed with two limiting grooves 3601, the two limiting grooves 3601 are respectively formed in the left inner wall and the right inner wall of the supporting frame 3, a second limiting rod 37 is connected in the limiting grooves 3601 in a sliding way, the lower side of one end of the limiting rod 37 far away from the supporting frame 3 is inclined, thereby not influencing the upward reset of the third limiting block 39, the second limiting rod 37 can not fall off from the limiting groove 3601, the limiting springs 38 are all installed in the limiting groove 3601, the third limiting blocks 39 are all connected on the second limiting rod 37, the limiting holes 40 are all arranged on the third limiting blocks 39, the starting rods 36 are all connected with the limiting holes 40 at the same side in a sliding way, the second limiting rod 37 can limit the third limiting block 39 by sliding into the limiting holes 40, the cleaning frame 34 is symmetrically connected with two adjusting mechanisms left and right, the third limiting block 39 is connected with the cleaning frame 34 by the adjusting mechanisms, when the second limiting rods 37 on the two sides slide into the limiting holes 40, the third limiting blocks 39 cannot move downwards, the cleaning frame 34 cannot slide downwards, and the adjusting mechanism can control the cleaning shaft 35 to approach the conveying rod 9.

When the transmission rod needs to be cleaned, the hydraulic cylinder 4 is manually controlled to contract, the transmission rod 9 is reset into the storage box 11, then the starting rods 36 on the two sides are pressed towards the second limiting rod 37 on the same side, so that the second limiting rod 37 slides towards the limiting groove 3601 and compresses the limiting spring 38, when the second limiting rod 37 slides out of the limiting hole 40, the second limiting rod 37 does not support the third limiting block 39, the cleaning frame 34 slides downwards along the cleaning chute 33, when the cleaning frame 34 slides to the bottom of the cleaning chute 33, the cleaning shaft 35 is positioned in the storage box 11, then the cleaning shaft 35 can move towards the direction close to the transmission rod 9 through the adjusting devices on the two sides, so that the cleaning bristles 3501 can be fully contacted with the transmission rod 9, then the power motor 8 is started, and the rotating shaft of the power motor 8 can drive the transmission rod 9 to rotate, therefore, the conveying rod 9 can be cleaned through the cleaning bristles 3501, when the conveying rod 9 is cleaned, the power motor 8 is turned off, the cleaning shaft 35 is moved to be reset in the direction away from the conveying rod 9 through the adjusting mechanism, then the cleaning frame 34 is manually moved to slide upwards along the cleaning chute 33, when the third limiting block 39 is contacted with the second limiting rod 37 and continues to move upwards, the second limiting rod 37 is extruded into the limiting groove 3601, the limiting spring 38 is compressed, when the cleaning frame 34 moves upwards until the second limiting rod 37 and the limiting hole 40 are in a uniform plane, the compressed limiting spring 38 pushes the second limiting rod 37 to reset outwards and move into the limiting hole 40, so that the third limiting block 39 can be limited, the cleaning frame 34 can be limited to slide downwards through the adjusting mechanism, and the conveying rod 9 can be cleaned through the cleaning mechanism, the step of manual cleaning is omitted, and the service life of the conveying rod 9 is prolonged.

As shown in fig. 7-10, the adjusting mechanism includes a connecting rod 4001, a connecting shaft 4002, a connecting spring 4003, a connecting block 41, a pushing block 4101, a first limiting block 42, a sliding block 43, a second fixing block 44, a third fixing block 4401, a second fixing shaft 45, a third spring 46, a fourth limiting block 47, a first rack 4701, a fifth limiting block 48, a second rack 4801, a limiting shaft 49 and a limiting gear 50, the cleaning shaft 35 and the cleaning frame 34 are slidably connected, two connecting rods 4001 are symmetrically and fixedly connected to the bottom end of the cleaning frame 34, two connecting shafts 4002 are fixedly connected to the connecting rods 4001, the connecting shafts 4002 are slidably connected to the cleaning shaft 35 on the same side, the connecting springs 4003 are sleeved on the connecting shafts 4002, the connecting springs 4003 are compressed when the cleaning shaft 35 moves towards the direction close to the conveying rod 9, the connecting blocks 41 are respectively connected to the bottom end of the third limiting block 39, the pushing blocks 4101 are fixedly connected to the front and the rear sides of the third limiting blocks 41, the lower side of the pushing block 4101 is arc-shaped, the upper end is plane, one end of the connecting block 41 facing the conveying rod 9 is fixedly connected with a first limiting block 42, the front and back sides of the first limiting block 42 are fixedly connected with sliding blocks 43, the sliding blocks 43 mainly provide guiding function for the up-and-down sliding of the first limiting block 42, the cleaning frame 34 is fixedly connected with two second fixing blocks 44 symmetrically left and right, the cleaning frame 34 is fixedly connected with two third fixing blocks 4401 symmetrically left and right, the second fixing blocks 44 are symmetrically front and back with the same-side third fixing blocks 4401, the second fixing blocks 44 and the third fixing blocks 4401 are fixedly connected with second fixing shafts 45, the second fixing shafts 45 are sleeved with third springs 46, the second fixing shafts 45 connected with the second fixing blocks 44 are connected with fourth limiting blocks 47 in a sliding mode, the fourth limiting blocks 47 are connected with the cleaning frame 34 in a sliding mode, and a part of the top ends of the fourth limiting blocks 47 is arc-shaped, the arc shape is matched with the arc shape at the lower side of the pushing block 4101, so that the fourth limiting block 47 can not influence the downward movement of the pushing block 4101, meanwhile, when the pushing block 4101 moves downward to be positioned below the fourth limiting block 47, the fourth limiting block 47 can limit the upward return of the pushing block 4101, the fourth limiting block 47 is fixedly connected with a first rack 4701, a fifth limiting block 48 is slidably connected with a second fixing shaft 45 connected with the third fixing block 4401, the fifth limiting block 48 is slidably connected with the cleaning frame 34, a part of the top end of the fifth limiting block 48 is in the shape of an arc, the arc is matched with the arc shape at the lower side of the pushing block 4101, so that the fifth limiting block 48 can not influence the downward movement of the pushing block 4101, meanwhile, when the pushing block 4101 moves downward to be positioned below the fifth limiting block 48, the fifth limiting block 48 can limit the upward return of the pushing block 4101, the fifth limiting block 48 is fixedly connected with a second rack 4801, the connecting blocks 41 are rotatably connected with limit shafts 49, limit gears 50 are fixedly connected to the limit shafts 49, and the limit gears 50 are meshed with the first rack 4701 and the second rack 4801 on the same side.

When the cleaning frame 34 slides to the bottom of the cleaning chute 33, the third stoppers 39 on both sides are manually pressed downward, so as to drive the engaging block 41 to move downward, thereby driving the first stopper 42 to slide downward, and simultaneously pressing the cleaning shaft 35 in a direction away from the second fixed block 44, so that the cleaning shaft 35 moves in a direction approaching the conveying rod 9, thereby causing the engaging shaft 4002 to slide in the cleaning shaft 35 while compressing the engaging spring 4003, thereby causing the cleaning bristles 3501 to fully contact with the conveying rod 9, when the pushing block 4101 contacts with the fourth stopper 47 and the fifth stopper 48 on the same side and continues to move downward, thereby pressing the fourth stopper 47 and the fifth stopper 48, thereby causing both the fourth stopper 47 and the fifth stopper 48 to slide in a direction away from the engaging block 41, and simultaneously compressing the third spring 46, and when the pushing block 4101 moves downward to be located below the fourth stopper 47 and the fifth stopper 48, at this time, the compressed third spring 46 pushes the fourth limiting block 47 and the fifth limiting block 48 to reset, so that the fourth limiting block 47 and the fifth limiting block 48 can limit the pushing block 4101 to move upwards, so that the joining block 41 can be limited to reset upwards, so that the first limiting block 42 can be limited to move upwards, so that the cleaning shaft 35 can be kept close to the conveying rod 9, so that the cleaning bristles 3501 are always in full contact with the conveying rod 9, then the power motor 8 is started, the rotating shaft of the power motor 8 can drive the conveying rod 9 to rotate, so that the conveying rod 9 can be cleaned through the cleaning bristles 3501, when the conveying rod 9 is cleaned, the limiting shafts 49 on the two sides are manually rotated at the moment, so that the limiting gear 50 is driven to rotate, the first rack 4701 and the second rack 4801 are driven to move through the rotation of the limiting gear 50, so that the fourth limiting block 47 and the fifth limiting block 48 are driven to reset and slide towards the direction away from the limiting gear 50, meanwhile, the third spring 46 is compressed, so that the fourth limiting block 47 and the fifth limiting block 48 cannot limit the pushing block 4101, and therefore the connecting block 41 cannot be limited, and therefore the first limiting block 42 cannot be limited, at this time, the compressed connecting spring 4003 can push the cleaning shaft 35 to move and reset in the direction away from the conveying rod 9, so that the cleaning shaft 35 can extrude the first limiting block 42 upwards and reset the first limiting block 42, and therefore the connecting block 41 can reset upwards, when the connecting block 41 resets upwards, the limiting shafts 49 on the two sides are loosened manually, at this time, the compressed third spring 46 can push the fourth limiting block 47 and the fifth limiting block 48 to slide and reset in the direction close to the limiting gear 50, the cleaning shaft 35 cannot be too close to the conveying rod 9 in the descending process through the adjusting mechanism, and therefore the cleaning bristles 3501 can be prevented from being bent in the descending process, thereby preventing the cleaning bristles 3501 from being unable to sufficiently contact the transfer bar 9 due to bending, and thus preventing the cleaning effect from being affected.

As shown in fig. 11, 12 and 13, the apparatus further comprises an auxiliary mechanism, the auxiliary mechanism comprises an auxiliary block 51, an auxiliary guide rail 53, an auxiliary barrel 54 and a fixing claw 55, the two auxiliary blocks 51 are fixedly connected to the bottom end of the bottom plate 1 in a bilateral symmetry manner, the auxiliary block 51 is used for fixedly connecting an auxiliary rod 52, the two auxiliary blocks 51 are connected with the auxiliary rod 52 in a rotating manner, the main body of the auxiliary rod 52 is L-shaped, the two auxiliary guide rails 53 are connected to the auxiliary rod 52, the auxiliary rod 52 can slide on the auxiliary guide rails 53, the two auxiliary guide rails 53 are fixedly connected with the auxiliary barrel 54, the auxiliary barrel 54 is in a barrel shape without a bottom, the conveying rod 9 can penetrate through the auxiliary barrel 54 when descending, and six fixing claws 55 are fixedly connected to the annular array at the bottom of the auxiliary barrel 54.

When only pit excavation is needed, the upper side of the auxiliary rod 52 is manually held and the auxiliary rod 52 is pushed to the direction close to the storage bin 11, so that the lower side of the auxiliary rod 52 rotates downwards around the auxiliary block 51, the auxiliary barrel 54 is driven to slide downwards through the auxiliary guide rail 53, the fixed claw 55 is driven to move downwards, the auxiliary rod 52 is still continuously pushed when the fixed claw 55 is in contact with the ground, the fixed claw 55 can penetrate into the ground, then the hydraulic cylinder 4 is controlled to push the conveying rod 9 downwards, when the conveying rod 9 conveys soil upwards between the ground and the bottom plate 1, the auxiliary barrel 54 seals the periphery of the transmission rod between the ground and the bottom plate 1, the soil is prevented from being thrown to the lower part of the bottom plate 1 due to inertia, the soil on the conveying rod 9 is conveyed upwards better, and the conveying rod 9 can convey the soil into the storage bin 11 better, the auxiliary assembly can prevent soil from falling below the bottom plate 1 in the upward conveying process, and meanwhile, the conveying rod 9 can better convey the soil into the storage box 11.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a afforestation gardens are with device of digging pit which characterized in that: comprises a bottom plate (1), rollers (2), a support frame (3), hydraulic cylinders (4), a support plate (5), telescopic rods (6), a motor frame (7), a power motor (8), a conveying rod (9) and a discharging mechanism, wherein the bottom plate (1) is provided with four rollers (2), the bottom plate (1) is fixedly connected with the support frame (3), the support frame (3) is provided with the hydraulic cylinders (4), the lower ends of the telescopic shafts of the hydraulic cylinders (4) are fixedly connected with the support plate (5), the support plate (5) is fixedly connected with four telescopic rods (6) in an annular array, the tops of the four telescopic rods (6) are fixedly connected with the support frame (3), the bottom end of the support plate (5) is fixedly connected with the motor frame (7), the motor frame (7) is provided with the power motor (8), the rotating shaft of the power motor (8) is fixedly connected with the conveying rod (9), the bottom plate (1) is connected with the discharging mechanism, the discharging mechanism can collect dug soil and automatically bury the pit.

2. A pit digging device for green gardens as claimed in claim 1, wherein: the discharging mechanism comprises supporting plates (10), a feeding pipe (1001), a storage box (11), a discharging bin (12), a discharging pipe (13), a discharging pipe (14), a discharging motor (15) and a discharging rod (16), wherein the two supporting plates (10) are symmetrically fixedly connected on a bottom plate (1), the feeding pipe (1001) is connected on the bottom plate (1), the storage box (11) is fixedly connected on the two supporting plates (10) and the feeding pipe (1001) together, the storage box (11) is communicated with the feeding pipe (1001), the two discharging bins (12) are fixedly connected on the bottom plate (1) in a bilateral symmetry manner, the discharging bin (12) is communicated with the discharging pipe (13), the discharging pipe (14) is communicated with the front side of the discharging pipe (13), the two discharging motors (15) are fixedly connected on the bottom plate (1) in a bilateral symmetry manner, the discharging rod (16) is arranged on a rotating shaft of each discharging motor (15), and the discharging rod (16) is positioned in the discharging pipe (13) at the same side, one end of the discharging rod (16) far away from the discharging motor (15) is arranged in the discharging bin (12) at the same side.

3. A pit digging device for green gardens as claimed in claim 2, wherein: the device is characterized by further comprising a fixing mechanism, the fixing mechanism comprises a fixing plate (17), first fixing shafts (18), fixed gears (19), fixing rods (20), control rods (2001), rotating shafts (21), rotating torsion springs (22), first fixing blocks (23) and a limiting mechanism, the fixing plate (17) is fixedly connected to the bottom plate (1), the fixing plate (17) is fixedly connected with the two discharging pipes (14), the two first fixing shafts (18) are symmetrically and rotatably connected to the fixing plate (17), the fixed gears (19) are fixedly connected to the first fixing shafts (18), the two fixed gears (19) are meshed, the fixing rods (20) are symmetrically and fixedly connected to the first fixing shafts (18), the control rods (2001) are fixedly connected to the fixing rods (20) on the right side, the two rotating shafts (21) are rotatably connected to each fixing rod (20), and the rotating torsion springs (22) are mounted on the upper side and the lower side of each rotating shaft (21), the rotary torsion springs (22) are connected with the rotary shafts (21) and the fixing rods (20), the rotary shafts (21) are fixedly connected with first fixing blocks (23), the fixing rods (20) are connected with limiting mechanisms, and the limiting mechanisms can limit the fixed gears (19) to rotate.

4. A pit digging device for green gardens as claimed in claim 3, wherein: the limiting mechanism comprises a first limiting rod (24), a limiting rack (2401), a limiting slide block (25), a first slide rod (26), a first spring (27), a second slide rod (28), a second spring (29), a reset block (30), a reset rod (31) and a reset spring (32), wherein the first limiting rod (24) is connected on the fixing plate (17) in a sliding manner, the limiting rack (2401) is fixedly connected on the lower side of the first limiting rod (24), the limiting slide block (25) is connected on the right side of the first limiting rod (24) in a sliding manner, the first slide rod (26) is fixedly connected on the lower side of the limiting slide block (25), the first slide rod (26) is connected with the first limiting rod (24) in a sliding manner, the first spring (27) is sleeved on the first slide rod (26), the second slide rod (28) is connected on the left side of the first limiting rod (24) in a sliding manner, the second slide rod (28) is fixedly connected with the fixing plate (17), the second spring (29) is sleeved on the second slide rod (28), a reset block (30) is fixedly connected to the fixing plate (17), a reset rod (31) is connected to the reset block (30) in a sliding mode, and a reset spring (32) is sleeved on the reset rod (31).

5. A pit digging device for green gardens as claimed in claim 4, wherein: the cleaning device also comprises a cleaning mechanism, the cleaning mechanism comprises a cleaning frame (34), cleaning shafts (35), cleaning bristles (3501), a starting rod (36), a second limiting rod (37), a limiting spring (38), a third limiting block (39) and an adjusting mechanism, two cleaning chutes (33) are symmetrically formed in the support frame (3), the cleaning frame (34) is connected to the two cleaning chutes (33) in a sliding manner, the cleaning frame (34) is connected to the two cleaning shafts (35) in a bilateral symmetry manner, the cleaning bristles (3501) are respectively arranged on the cleaning shafts (35), the starting rod (36) is symmetrically connected to the cleaning frame (34), the two limiting grooves (3601) are symmetrically formed in the cleaning frame (34), the second limiting rod (37) is connected to the limiting grooves (3601) in a sliding manner, the limiting spring (38) is respectively arranged in the limiting grooves (3601), and the third limiting block (39) is respectively connected to the second limiting rod (37), spacing hole (40) have all been seted up on third stopper (39), actuating lever (36) all with spacing hole (40) sliding connection of homonymy, second stopper (37) can be spacing to third stopper (39) in spacing hole (40) through sliding, bilateral symmetry's two adjustment mechanism that are connected with on clearance frame (34), third stopper (39) are connected with clearance frame (34) through adjustment mechanism, adjustment mechanism can control clearance axle (35) and be close to the direction of conveying pole (9).

6. A pit digging device for green gardens as claimed in claim 5, wherein: the adjusting mechanism comprises a connecting rod (4001), a connecting shaft (4002), a connecting spring (4003), a connecting block (41), a pushing block (4101), a first limiting block (42), a sliding block (43), a second fixing block (44), a third fixing block (4401), a second fixing shaft (45), a third spring (46), a fourth limiting block (47), a first rack (4701), a fifth limiting block (48), a second rack (4801), a limiting shaft (49) and a limiting gear (50), two connecting rods (4001) are symmetrically and fixedly connected at the bottom end of the cleaning frame (34), two connecting shafts (4002) are fixedly connected on the connecting rods (4001), the connecting shafts (4002) are both in sliding connection with the cleaning shaft (35) at the same side, the springs (4003) are arranged on the connecting shafts (4002), the connecting blocks (41) are fixedly connected at the bottom ends of the third connecting limiting blocks (39), a first limiting block (42) is fixedly connected to one end of the connecting block (41) facing the conveying rod (9), sliding blocks (43) are fixedly connected to the front side and the rear side of the first limiting block (42), two second fixing blocks (44) are fixedly connected to the cleaning frame (34) in a bilateral symmetry manner, two third fixing blocks (4401) are fixedly connected to the cleaning frame (34) in a bilateral symmetry manner, the second fixing blocks (44) are in a front-rear symmetry with the third fixing blocks (4401) on the same side, second fixing shafts (45) are fixedly connected to the second fixing blocks (44) and the third fixing blocks (4401) respectively, third springs (46) are sleeved on the second fixing shafts (45), fourth limiting blocks (47) are slidably connected to the second fixing shafts (45) connected to the second fixing blocks (44), the fourth limiting blocks (47) are slidably connected to the cleaning frame (34), and first racks (4701) are fixedly connected to the fourth limiting blocks (47), equal sliding connection has fifth stopper (48) on second fixed axle (45) of connecting on third fixed block (4401), fifth stopper (48) all with clearance frame (34) sliding connection, equal rigid coupling has second rack (4801) on fifth stopper (48), all rotate on linking piece (41) and be connected with spacing axle (49), equal rigid coupling has limiting gear (50) on spacing axle (49), limiting gear (50) all with first rack (4701) and the meshing of second rack (4801) of homonymy.

7. A pit digging device for green gardens as claimed in claim 6, wherein: still including auxiliary mechanism, auxiliary mechanism is including supplementary piece (51), supplementary guide rail (53), supplementary bucket (54), stationary dog (55), bottom plate (1) bottom bilateral symmetry ground rigid coupling has two supplementary pieces (51), rotate jointly on two supplementary pieces (51) and connect auxiliary rod (52), be connected with two supplementary guide rail (53) on auxiliary rod (52), two supplementary guide rail (53) common rigid couplings have supplementary bucket (54), the rigid coupling of supplementary bucket (54) bottom annular array has six stationary dog (55).