CN115486222A

CN115486222A - Fresh Chinese yam fertilizing device

Info

Publication number: CN115486222A
Application number: CN202211190210.2A
Authority: CN
Inventors: 张霞; 桂良强
Original assignee: Jiangxi Buqian Agricultural Development Co ltd
Current assignee: Jiangxi Buqian Agricultural Development Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-12-20
Anticipated expiration: 2042-09-28
Also published as: CN115486222B

Abstract

The invention relates to the technical field of agricultural fertilization, in particular to a fresh Chinese yam fertilizing device. The invention provides a fresh Chinese yam fertilizing device capable of automatically covering fertilizers and automatically patting covered land. The utility model provides a bright chinese yam fertilizer injection unit, including the bracing piece, the charging bucket, the discharging pipe, straight shovel plough and wheel etc, the bracing piece is all installed to both sides around the charging bucket, the rotary type is connected with the wheel between the bracing piece lower part, the discharging pipe is installed to the charging bucket bottom, charging bucket and discharging pipe UNICOM, the charging bucket bottom is connected with straight shovel plough, straight shovel plough is located the discharging pipe left, straight shovel lower part sets up towards left below slope, the bottom of straight shovel plough is less than the discharging pipe bottom. The output shaft through the motor rotates fast and drives the double helix pole fast rotation to drive the quick inside and outside motion of stirring board, the inside and outside motion of stirring board will be inwards pushed to ground fertilization department by the soil of shoveling out, thereby cover fertilizer automatically, do benefit to and improve the bright chinese yam fertilization efficiency of fertilization.

Description

Fresh Chinese yam fertilizing device

Technical Field

The invention relates to the technical field of agricultural fertilization, in particular to a fresh Chinese yam fertilizing device.

Background

In the planting process of bright chinese yam, need give the fertilization of bright chinese yam often, in order to improve fertilization efficiency, people use fertilizer injection unit to fertilize bright chinese yam usually, at the in-process of fertiliziing to bright chinese yam, need utilize fertilizer injection unit to plough ground to pour fertilizer on the ground of ploughing, cover fertilizer by the manual work afterwards, and will cover the department soil by the manual work and clap tightly, avoid fertilizer to run off.

Current fertilizer injection unit falls fertilizer behind the ground of plowing, needs the manual work to cover fertilizer and clap tightly and cover a place soil, and such fertilizer covers the consuming time and power of mode, leads to fertilization efficiency lower relatively, to this problem, we have designed an automatic cover fertilizer and automatic clap tightly cover the bright chinese yam fertilizer injection unit in a place soil, improve the efficiency that bright chinese yam was fertilizied.

Disclosure of Invention

In order to overcome the defects that fertilizers need to be covered manually and covered land needs to be tightly patted, the invention provides the fresh Chinese yam fertilizing device capable of automatically covering the fertilizers and automatically patting the covered land.

The utility model provides a bright chinese yam fertilizer injection unit, including the bracing piece, the charging bucket, the discharging pipe, straight plough shovel and wheel, the bracing piece is all installed to both sides around the charging bucket, the rotary type is connected with the wheel between the bracing piece lower part, the discharging pipe is installed to the charging bucket bottom, charging bucket and discharging pipe UNICOM, the charging bucket bottom is connected with straight plough shovel, straight plough shovel is located the discharging pipe left, straight plough shovel lower part is towards the slope setting of left side below, the discharge end of discharging pipe is located the ground top, still including toggle mechanism and hold-down mechanism, be equipped with on the straight plough shovel and be used for inwards promoting soil and carry out the toggle mechanism that covers to ground fertilization department, the toggle mechanism left side is equipped with the hold-down mechanism that is used for automatic intermittent type to pat soil that has been covered.

Optionally, toggle mechanism is including fixed plate, motor, double-screw rod and stirring board, and the joint of straight plough shovel upper portion has the fixed plate, and the motor is all installed to two portions around the fixed plate right side, all has double-screw rod through the coupling joint on the output shaft of motor, and double-screw rod inner all is connected with the fixed plate rotary type, and equal threaded connection has the stirring board on the double-screw rod, stirs the board bottom and ground contact.

Optionally, hold-down mechanism is including the connecting rod, first spring, protruding board and pressure strip, the equal slidingtype in two portions is connected with the connecting rod around the fixed plate left side, install the pressure strip between the bottom of connecting rod right side, it is right-hand that the pressure strip is located two and dials the board centre, the connecting rod left side is all around having first spring, both ends are equallyd divide about the first spring and are do not connected with fixed plate and connecting rod, dial the board top and all be connected with protruding board, the inboard internal and external motion intermittent type nature of protruding block upwards extrudees the connecting rod.

Optionally, the soil plowed by the soil plough is guided by the guide mechanism, the guide mechanism comprises a guide rod, a second spring and a tightening plate, the guide rod is connected to the front portion and the rear portion of the left side of the fixing plate in a sliding mode, the tightening plate is installed on the lower portion of the guide rod, the tightening plate is obliquely arranged towards the inner right side, the second spring is wound on the guide rod, and the upper end and the lower end of the second spring are connected with the fixing plate and the tightening plate respectively.

Optionally, the soil compacting device further comprises a rolling mechanism for flattening the covered soil, the rolling mechanism comprises fixing rods, fixing shafts and rollers, the fixing rods are mounted on the front portion and the rear portion of the right side of the fixing plates, the fixing shafts are connected between the right lower portions of the fixing rods, the rollers are rotatably connected to the fixing shafts, and the rollers are located right left of the compacting plate.

Optionally, still including being used for adjusting the adjustment mechanism of dead lever height, adjustment mechanism is including locating lever and third spring, and straight plough shovel upper portion is from last to down evenly opening there is the locating hole, and fixed plate left side slidingtype is connected with the locating lever, and the locating lever slides right and inserts in the locating hole, and it has the third spring to wind on the locating lever, and both ends are connected with locating lever and fixed plate respectively about the third spring.

Optionally, still including being used for aggravating the aggravate mechanism that the patting has covered soil, aggravate the mechanism including putting the thing board, gag lever post and fourth spring, the spout has all been opened to connecting rod right side lower part, the thing board is put in all installing in connecting rod right side lower part, the equal sliding connection in connecting rod right side lower part has the gag lever post, the gag lever post slides from top to bottom in the spout, the gag lever post passes puts the thing board, the gag lever post with put thing board sliding connection, the roof all is connected with the fourth spring in the gag lever post, fourth spring bottom all is connected with the connecting rod, the fourth spring all is located the spout.

Optionally, the included angle between the lower portion of the support rod and the ground is between forty-five degrees and sixty degrees.

Compared with the prior art, the invention has the following advantages:

1. the double screw rods are driven to rotate rapidly through the rapid rotation of the output shaft of the motor, so that the shifting plate is driven to move rapidly inside and outside, the soil shoveled by the internal and external movement of the shifting plate is pushed inwards to the ground fertilizing position, and therefore the fertilizer is covered automatically, and the fertilizing efficiency of the fresh Chinese yam is improved;

2. the connecting rod is vibrated up and down, so that the covered soil is automatically and intermittently beaten by the pressing plate, the covered soil is firmer, the fertilizer loss is avoided, and the fertilizer application effect is favorably ensured;

3. the plowed soil on the front side and the rear side is guided by the leftward movement of the tightening plate, so that the soil is concentrated towards the middle and is positioned between the two shifting plates, and the shifting plates can conveniently push the soil to cover the fertilizer;

4. when the compaction plate is contacted with the ground, the roller is contacted with the ground, the fixed plate moves leftwards to drive the fixed rod to move leftwards, so that the roller moves leftwards through the fixed shaft and rolls while moving leftwards, covered soil is flattened, and the compaction plate can compact the covered soil conveniently;

5. the fixed rod is vertically pulled to slide to the required height, so that the poking plate, the pressing plate, the tightening plate and the roller can be in contact with the ground when the straight plough shovel is inserted into the ground at different depths, and the adaptability is high;

6. through adding appointed hoop on putting the thing board, can increase the weight of pressure strip for the pressure strip is patted more heavily and has been covered soil, does benefit to further compressing tightly the soil that has been covered, further avoids fertilizer to run off, does benefit to the effect of further guaranteeing the fertilization.

Drawings

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

Fig. 2 is a perspective view of a second perspective structure according to the present invention.

Fig. 3 is a schematic perspective view of the toggle mechanism of the present invention.

Fig. 4 is a schematic perspective view of the pressing mechanism of the present invention.

Fig. 5 is a schematic perspective view of the tightening mechanism of the present invention.

Fig. 6 is a schematic perspective view of the rolling mechanism of the present invention.

Fig. 7 is a schematic perspective view of the adjusting mechanism of the present invention.

Fig. 8 is a schematic perspective view of the weight mechanism of the present invention.

Fig. 9 is a perspective sectional view of the weight mechanism of the present invention.

The parts are labeled as follows: 1: support rod, 2: charging bucket, 21: discharge pipe, 3: direct plough shovel, 4: wheel, 5: toggle mechanism, 51: fixing plate, 52: motor, 53: double screw rod, 54: toggle plate, 6: pressing mechanism, 61: connecting rod, 62: first spring, 63: boss plate, 64: pressure strip, 7: tightening mechanism, 71: guide bar, 72: second spring, 73: tightening plate, 8: rolling mechanism, 81: fixing rod, 82: fixed shaft, 83: roller, 9: adjustment mechanism, 91: positioning rod, 92: third spring, 93: positioning hole, 10: weighting mechanism, 101: storage plate, 102: chute, 103: stop lever, 104: and a fourth spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is to be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", and the like as used herein, whether or not specifically defined herein, are used in a generic and descriptive sense only and not for purposes of limitation.

Example 1

The utility model provides a bright chinese yam fertilizer injection unit, as shown in fig. 1 and fig. 2, including bracing piece 1, charging bucket 2, discharging pipe 21, straight plow shovel 3, wheel 4, toggle mechanism 5 and hold-down mechanism 6, the quantity of bracing piece 1 is two, two bracing pieces 1 weld respectively in the front and back both sides of charging bucket 2, the contained angle between bracing piece 1 lower part and the ground is forty-five degrees, wheel 4 rotary type is connected between two bracing pieces 1 lower parts, discharging pipe 21 rigid coupling is in charging bucket 2 bottom, charging bucket 2 and discharging pipe 21 UNICOM, charging bucket 2 bottom welding has straight plow shovel 3, straight plow shovel 3 is located discharging pipe 21 left, straight plow shovel 3 lower part sets up towards the below left side slope, the discharge end of discharging pipe 21 is located the ground top, be equipped with toggle mechanism 5 on straight plow shovel 3, toggle mechanism 5 pushes soil inwards and covers ground fertilization department, toggle mechanism 5 left side is equipped with hold-down mechanism 6, hold-down mechanism 6 beats the soil that has covered in the intermittence automatically.

As shown in fig. 1, 2 and 3, the toggle mechanism 5 includes a fixed plate 51, two motors 52, two double-screw rods 53 and a toggle plate 54, the fixed plate 51 is connected to the upper portion of the direct plough shovel 3 in a clamping manner, the number of the motors 52 is two, the two motors 52 are respectively installed at the front and rear portions of the right side of the fixed plate 51, the number of the double-screw rods 53 is two, the two double-screw rods 53 are respectively connected to output shafts of the two motors 52 through couplings, the inner ends of the double-screw rods 53 are rotatably connected to the fixed plate 51, the toggle plate 54 is respectively connected to the double-screw rods 53 in a threaded manner, and the bottom of the toggle plate 54 is in contact with the ground, so as to avoid blocking the direct plough shovel 3 from being inserted into the ground.

As shown in fig. 1, 2 and 4, the pressing mechanism 6 includes two connecting rods 61, two first springs 62, a bump plate 63 and a pressing plate 64, the two connecting rods 61 are slidably connected to the front and rear portions of the left side of the fixed plate 51, the pressing plate 64 is welded between the bottom ends of the right side of the connecting rods 61, the pressing plate 64 is located on the right side of the middle of the two shifting plates 54, the two first springs 62 are wound on the left sides of the two connecting rods 61, the upper and lower ends of the first springs 62 are connected to the fixed plate 51 and the connecting rods 61, the top of the shifting plates 54 is connected to the bump plate 63, and the connecting rods 61 are intermittently and upwardly pressed by the internal and external movement of the bump plate 63.

In the planting process of fresh Chinese yam, when the fresh Chinese yam needs to be fertilized, people firstly open the charging barrel 2, a proper amount of fertilizer is charged into the charging barrel 2, the charging barrel 2 is closed, then the fresh Chinese yam fertilizing device is placed beside a ridge of fresh Chinese yam crops, the wheels 4 are in contact with the ground, the straight plow blade 3 is inserted into the ground, the toggle plate 54 and the pressing plate 64 are in contact with the ground, then the supporting rod 1 is pushed leftwards, the wheels 4 move leftwards and roll on the ground, the charging barrel 2 moves leftwards through the supporting rod 1, the straight plow blade 3 moves leftwards to plow the ground, the shoveled soil is positioned on the front side and the rear side of the straight plow blade 3, the charging barrel 2 moves leftwards to drive the discharging pipe 21 to move leftwards, fertilizer is added at the ground plowing position to fertilize the fresh Chinese yam, the straight plow blade 3 moves leftwards to drive the fixing plate 51 to move leftwards, thereby, the motor 52 is driven to drive the double-screw rod 53 to move leftwards, the shifting plate 54 is driven to move leftwards, in the process that the shifting plate 54 moves leftwards, the motor 52 is started, the output shaft of the motor 52 rotates rapidly to drive the double-screw rod 53 to rotate rapidly, so as to drive the shifting plate 54 to move inwards and outwards rapidly, thus, the shifting plate 54 can gather the shoveled soil inwards to the ground fertilizing position, thereby automatically covering the fertilizer, being beneficial to improving the fertilizing efficiency of the fresh yam, the shifting plate 54 moves inwards and outwards to drive the convex plate 63 to move inwards and outwards, the convex plate 63 moves inwards and outwards intermittently to extrude the connecting rod 61, the first spring 62 deforms in an adaptive manner, the connecting rod 61 shakes upwards and downwards, thereby the pressing plate 64 automatically and intermittently beats the covered soil, the covered soil is more compact, the fertilizer loss is avoided, and the fertilizing effect is beneficial to guarantee, when the fertilization of the fresh Chinese yam is finished, the motor 52 is turned off, and the fresh Chinese yam fertilizing device is moved away through the supporting rod 1 and the wheels 4.

Example 2

In addition to embodiment 1, as shown in fig. 1, 2, and 5, the present invention further includes a tightening mechanism 7, the tightening mechanism 7 includes two guide rods 71, two second springs 72, and a tightening plate 73, the two guide rods 71 are slidably connected to the front and rear portions of the left side of the fixed plate 51, the tightening plate 73 is welded to the lower portion of each guide rod 71, the tightening plates 73 are both obliquely arranged toward the right inner side, the two second springs 72 are two, the two second springs 72 are respectively wound around the two guide rods 71, and the upper and lower ends of each second spring 72 are respectively connected to the fixed plate 51 and the tightening plate 73.

When wheel 4 and ground contact, tightening plate 73 supports ground, straight plough shovel 3 inserts ground and drives fixed plate 51 downstream, second spring 72 is compressed, fixed plate 51 moves left and drives tightening plate 73 through guide bar 71 and moves left, tightening plate 73 moves left and is carried out the water conservancy diversion with the soil that both sides were ploughed out around with, make soil concentrate to the centre, and make soil be located between two stirring boards 54, it covers to be convenient for stir board 54 and promote soil, when taking away this bright chinese yam fertilizer injection unit away, second spring 72 resets and makes guide bar 71 and tightening plate 73 move down and reset.

As shown in fig. 1, 2 and 6, the pressing device further includes a rolling mechanism 8, the rolling mechanism 8 includes two fixing rods 81, a fixing shaft 82 and a roller 83, the two fixing rods 81 are respectively welded at the front and rear parts of the bottom wall of the fixing plate 51, the fixing shaft 82 is fixedly connected between the right lower parts of the two fixing rods 81, the roller 83 is rotatably connected to the fixing shaft 82, and the roller 83 is located at the right left side of the pressing plate 64.

When the compacting plate 64 is in contact with the ground, the roller 83 is in contact with the ground, the fixing plate 51 moves leftwards to drive the fixing rod 81 to move leftwards, so that the roller 83 moves leftwards through the fixing shaft 82, the roller 83 rolls leftwards simultaneously, covered soil is flattened, and the compacting plate 64 can compress the covered soil conveniently.

As shown in fig. 1, 2 and 7, the adjusting mechanism 9 is further included, the adjusting mechanism 9 includes a positioning rod 91 and a third spring 92, positioning holes 93 are uniformly formed in the upper portion of the straight plow blade 3 from top to bottom, the positioning rod 91 is slidably connected to the left side of the fixing plate 51, the positioning rod 91 is slidably inserted into the positioning holes 93 rightwards, the third spring 92 is wound on the positioning rod 91, and the left end and the right end of the third spring 92 are respectively connected with the positioning rod 91 and the fixing plate 51.

When fertilizer needs to be added to different underground depths, the straight plow blade 3 needs to be correspondingly inserted into different ground depths, so that the height of the fixing plate 51 needs to be correspondingly adjusted, the poking plate 54, the pressing plate 64, the tightening plate 73 and the roller 83 can be in contact with the ground, when the height of the fixing plate 51 needs to be adjusted, people firstly pull the positioning rod 91 outwards, the positioning rod 91 is enabled to slide outwards to be separated from the positioning hole 93, the third spring 92 is stretched, then the fixing plate 51 is pulled upwards and downwards, the fixing rod 81 is enabled to slide upwards and downwards to the required height, so that the straight plow blade 3 is ensured to be inserted into different ground depths, the poking plate 54, the pressing plate 64, the tightening plate 73 and the roller 83 can be in contact with the ground, the adaptability is high, the fixing rod 81 slides upwards and downwards to drive the positioning rod 91 to slide upwards and downwards to correspond to the positioning hole 93 with the corresponding height, then the positioning rod 91 is loosened, and the third spring 92 resets to enable the positioning rod 91 to slide inwards to be inserted into the positioning hole 93 with the corresponding height, so that the fixing plate 51 is fixed.

As shown in fig. 2, fig. 8 and fig. 9, still including aggravating mechanism 10, aggravate mechanism 10 including putting thing board 101, gag lever post 103 and fourth spring 104, the quantity of spout 102 is two, two spouts 102 are opened respectively in the right lower part of two connecting rods 61, connecting rod 61 right lower part has all welded and has put thing board 101, the equal sliding connection in connecting rod 61 right lower part has gag lever post 103, gag lever post 103 slides from top to bottom in spout 102, gag lever post 103 passes puts thing board 101, gag lever post 103 and put thing board 101 sliding connection, the equal rigid coupling of the interior roof of gag lever post 103 has fourth spring 104, fourth spring 104 bottom all is connected with connecting rod 61, fourth spring 104 all is located spout 102.

When needs use this bright chinese yam fertilizer injection unit to fertilize the operation, people can upwards stimulate gag lever post 103, make gag lever post 103 upwards slide and break away from and put thing board 101, fourth spring 104 is stretched, later place the appointed hoop that appointed weight corresponds on putting thing board 101, and make appointed hoop center and gag lever post 103 correspond, loosen gag lever post 103 afterwards, fourth spring 104 resets and makes gag lever post 103 lapse and put thing board 101 with appointed hoop, thereby fix appointed hoop, through adding appointed hoop on putting thing board 101, can increase the weight of pressure strip 64, make pressure strip 64 pat more heavily and cover soil, do benefit to the soil that further compresses tightly and cover, further avoid fertilizer to run off, do benefit to the effect of further guaranteeing the fertilization.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.

Claims

1. The utility model provides a bright chinese yam fertilizer injection unit, including bracing piece (1), charging bucket (2), discharging pipe (21), straight plough shovel (3) and wheel (4), bracing piece (1) is all installed to both sides around charging bucket (2), the rotary type is connected with wheel (4) between bracing piece (1) lower part, discharging pipe (21) are installed to charging bucket (2) bottom, charging bucket (2) and discharging pipe (21) UNICOM, charging bucket (2) bottom is connected with straight plough shovel (3), straight plough shovel (3) are located discharging pipe (21) left, straight plough shovel (3) lower part is towards the slope setting of left side below, the discharge end of discharging pipe (21) is located the ground top, characterized by: the soil covering machine is characterized by further comprising a shifting mechanism (5) and a pressing mechanism (6), wherein the shifting mechanism (5) used for inwards pushing soil to cover a ground fertilization position is arranged on the straight plough shovel (3), and the pressing mechanism (6) used for automatically and intermittently beating covered soil is arranged on the left side of the shifting mechanism (5).

2. The fresh yam fertilizing device as claimed in claim 1, wherein: toggle mechanism (5) are including fixed plate (51), motor (52), double helix pole (53) and stirring board (54), direct plough shovel (3) upper portion joint has fixed plate (51), motor (52) are all installed to both sides around fixed plate (51) right side, all there is double helix pole (53) through the coupling joint on the output shaft of motor (52), double helix pole (53) inner all is connected with fixed plate (51) rotary type, equal threaded connection has stirring board (54) on double helix pole (53), stirring board (54) bottom and ground contact.

3. The fresh yam fertilizing device as claimed in claim 2, wherein: hold-down mechanism (6) is including connecting rod (61), first spring (62), lug board (63) and pressure strip (64), fixed plate (51) left side front and back two equal slidingtype connections have connecting rod (61), install pressure strip (64) between connecting rod (61) right side bottom, pressure strip (64) are located two and dial right-hand sides in the middle of board (54), connecting rod (61) left side all around having first spring (62), both ends are equallyd divide about first spring (62) and are do not connected with fixed plate (51) and connecting rod (61), it all is connected with lug board (63) to dial board (54) top, lug board (63) inside and outside motion intermittent type nature upwards extrudees connecting rod (61).

4. The fresh yam fertilizing device as claimed in claim 3, wherein: still including being used for carrying out tightening mechanism (7) of water conservancy diversion to ploughed out soil, tightening mechanism (7) are including guide bar (71), second spring (72) and tightening plate (73), fixed plate (51) left side front and back two all sliding connection have guide bar (71), tightening plate (73) are all installed to guide bar (71) lower part, tightening plate (73) all set up towards right inboard slope, all around on guide bar (71) second spring (72), both ends are equallyd divide about second spring (72) and are do not connected with fixed plate (51) and tightening plate (73).

5. The fresh yam fertilizing device as claimed in claim 4, wherein: the soil compacting machine is characterized by further comprising a compacting mechanism (8) used for compacting covered soil, wherein the compacting mechanism (8) comprises a fixing rod (81), a fixing shaft (82) and a roller (83), the fixing rod (81) is installed on the front portion and the rear portion of the right side of the fixing plate (51), the fixing shaft (82) is connected between the right lower portion of the fixing rod (81), the roller (83) is connected to the fixing shaft (82) in a rotating mode, and the roller (83) is located on the right left side of the pressing plate (64).

6. The fresh yam fertilizing device as claimed in claim 5, wherein: still including adjustment mechanism (9) that are used for adjusting dead lever (51) height, adjustment mechanism (9) are including locating lever (91) and third spring (92), straight plough shovel (3) upper portion is from last down evenly to open locating hole (93), fixed plate (51) left side slidingtype is connected with locating lever (91), locating lever (91) slide right and insert in locating hole (93), around having third spring (92) on locating lever (91), both ends are connected with locating lever (91) and fixed plate (51) respectively about third spring (92).

7. The fresh yam fertilizing device as claimed in claim 6, wherein: still including being used for aggravating and patting aggravate mechanism (10) that has covered soil, aggravate mechanism (10) including putting thing board (101), gag lever post (103) and fourth spring (104), spout (102) have all been opened to connecting rod (61) right side lower part, connecting rod (61) right side lower part is all installed and is put thing board (101), the equal sliding type in connecting rod (61) right side lower part is connected with gag lever post (103), gag lever post (103) slide from top to bottom in spout (102), gag lever post (103) pass and put thing board (101), gag lever post (103) and put thing board (101) sliding type connection, gag lever post (103) interior roof all is connected with fourth spring (104), fourth spring (104) bottom all is connected with connecting rod (61), fourth spring (104) all are located spout (102).

8. The fresh yam fertilizing device as claimed in claim 1, wherein: the included angles between the lower part of the supporting rod (1) and the ground are all between forty-five degrees and sixty degrees.