CN211671236U - Sand field sand-coating device and sand field sand-coating machine - Google Patents

Abstract

The utility model provides a sand field sand-coating device and sand field sand-coating machine relates to agricultural machine technical field, this sand field sand-coating device is including bearing the frame, first sand-coating pterygoid lamina and second sand-coating pterygoid lamina, it is used for installing on the automobile body of marcing and marchs under the drive of the automobile body of marcing to bear the frame, first sand-coating pterygoid lamina and second sand-coating pterygoid lamina set up the both sides of bearing the frame relatively, and be the contained angle setting between first sand-coating pterygoid lamina and the second sand-coating pterygoid lamina and form the sand-coating cavity that is used for gathering together the sandy soil, the sand-coating cavity has relative sand inlet and sand outlet in the advancing direction that bears the frame, the width of sand inlet is greater than the width of sand outlet. Compared with the prior art, the utility model provides a pair of sand field sand-coating device can realize automatic sand-coating, conveniently fertilizes the operation such as etc.

Description

Sand field sand-coating device and sand field sand-coating machine

Technical Field

The utility model relates to the technical field of agricultural machinery, particularly, relate to a sand field sand-lined device and sand field sand-lined machine.

Background

The apples belong to perennial woody plants, the nutritional value of the fruits is high, the apples are also the pillar industry in northwest parts of China, the demand on the apples is continuously increased along with the continuous updating of health concepts of people, and the planting area is increased. Gansu has a long history of cultivation of sand field apples, and the sand field has the characteristics of soil moisture preservation, temperature increase, strong tree vigor of sand field fruit trees, high fruit quality and the like, and the sand field apples are one of national geographical sign agricultural products. Fertilization is carried out in autumn in a sand field orchard and other crop management synchronously, and great difficulty is brought to fertilization work. The sand field apple orchard is generally fertilized by adopting artificial sanding and sand coating, and the artificial sanding and sand coating have the following defects: the first inefficiency (6 recruitment per mu), because everyone's physical power degree is different, lead to whole fertilization inefficiency. Secondly, with the rise of labor cost, the labor cost also generally rises, and the phenomenon of short plate of orchard production management occurs.

At present, no instrument is used for fertilizing the orchard sand field in the market of China basically, labor-saving cultivation machinery is less in application, fruit growers mainly depend on manual fertilization and sand coating, labor is wasted, and a large amount of burden is brought to work.

In view of this, it is very important to design and manufacture a sand-covering device for sand field, which can automatically cover sand after sanding in the apple orchard and is convenient for operations such as fertilization and intertillage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sand field sand-coating device, it can realize automatic sand-coating, conveniently fertilizes the operation such as, and the operating efficiency is high.

Another object of the utility model is to provide a sand field covers sand machine, it can realize the sand-lined operation, covers sand fast after the convenient fertilization, and the operating efficiency is high.

The utility model is realized by adopting the following technical scheme.

In one aspect, the utility model provides a sand-coating device for sand field, including bearing frame, first sand-coating pterygoid lamina and second sand-coating pterygoid lamina, bear the frame and be used for installing on advancing the automobile body and advance under the drive of advancing the automobile body, first sand-coating pterygoid lamina with second sand-coating pterygoid lamina sets up relatively bear the both sides of frame, just first sand-coating pterygoid lamina with be the contained angle setting between the second sand-coating pterygoid lamina and form the sand-coating cavity that is used for gathering together sandy soil, the sand-coating cavity is in relative sand inlet and sand outlet have in the advancing direction who bears the frame, the width that advances the sand inlet is greater than the width of sand outlet.

Furthermore, the sand outlet is provided with a connecting rod, and the connecting rod is respectively connected with the bottom end of the first sand-lined wing plate and the bottom end of the second sand-lined wing plate.

Furthermore, the first sand-lined wing plate and the second sand-lined wing plate are symmetrically arranged on two sides of the bearing frame, and an included angle between the first sand-lined wing plate and the second sand-lined wing plate is 30-60 degrees.

Furthermore, one end of the first sand-coated wing plate close to the sand inlet is provided with a first sharp corner, the bottom of the first sharp corner is flush with the bottom of the first sand-coated wing plate, one end of the second sand-coated wing plate close to the sand inlet is provided with a second sharp corner, and the bottom of the second sharp corner is flush with the bottom of the second sand-coated wing plate.

Further, the bearing rack comprises a first cross rod and a second cross rod, the first cross rod and the second cross rod are arranged in parallel, two ends of the first cross rod are respectively connected with the first sand-coated wing plate and the second sand-coated wing plate, two ends of the second cross rod are respectively connected with the first sand-coated wing plate and the second sand-coated wing plate, a first mounting structure used for being mounted on the advancing vehicle body is arranged on the first cross rod, and a second mounting structure used for being mounted on the advancing vehicle body is arranged on the second cross rod.

Further, the first mounting structure comprises a first mounting cylinder and a second mounting cylinder, the first mounting cylinder and the second mounting cylinder are arranged on the first cross rod at intervals, the second mounting structure comprises a third mounting cylinder and a fourth mounting cylinder, and the third mounting cylinder and the fourth mounting cylinder are arranged on the second cross rod at intervals.

Furthermore, the sand-coating device for the sand field also comprises a fertilizer box, wherein the fertilizer box is arranged on the bearing rack and is positioned above the sand-coating cavity and used for throwing fertilizer into the sand-coating cavity.

Furthermore, the bottom of fertilization case is provided with at least three fertilization pipe, and is three fertilization pipe is plough structure to 5cm with ground protrusion, and is three fertilization pipe sets up along the perpendicular to the advancing direction interval of bearing the frame, every fertilization pipe is last all to be provided with a fertilization switch structure, fertilization switch structure is used for opening or close corresponding fertilization pipe.

Further, the fertilization switch structure comprises a stop plate, a stop gap is formed in the middle of the fertilization pipe, and the stop plate is inserted into the stop gap and used for blocking the fertilization pipe.

In another aspect, the utility model provides a sand-field sand-covering machine, including advancing automobile body and sand-field sand-covering device, including bearing frame, first sand-covering pterygoid lamina and second sand-covering pterygoid lamina, first sand-covering pterygoid lamina with second sand-covering pterygoid lamina sets up relatively bear the both sides of frame, just first sand-covering pterygoid lamina with be the contained angle setting between the second sand-covering pterygoid lamina and form the sand-covering cavity that is used for gathering together sandy soil, the sand-covering cavity is in relative sand inlet and sand outlet have in the advancing direction who bears the frame, sand inlet's width is greater than sand outlet's width. The bearing frame is arranged on the advancing vehicle body and is driven by the advancing vehicle body to advance.

The utility model discloses following beneficial effect has:

the utility model provides a sand-covering device for sand field, which is characterized in that a first sand-covering wing plate and a second sand-covering wing plate are respectively arranged at two sides of a bearing frame, and a sand-covering cavity is formed between the first sand-covering wing plate and the second sand-covering wing plate, when in actual operation, the bearing frame moves along with an advancing vehicle body to drive the first sand-covering wing plate and the second sand-covering wing plate to move, sand enters the sand-covering cavity through a sand inlet and flows out through a sand outlet, because the width of the sand inlet is larger than that of the sand outlet, the first sand-covering wing plate and the second sand-covering wing plate have the function of gathering the sand, thereby realizing covering the sand at two sides of a ditch ridge on the ditch ridge, realizing the sand-covering function, changing deep application of base fertilizer into shallow application, fully utilizing the characteristic of strong root system capability of the upper part, changing the fertilizer application into dispersed fertilizer application, cutting, the root system part of the root system plays a role of root system pruning, the tree vigor is enhanced, quick sand covering is performed after fertilization is facilitated, and manpower is saved. Compared with the prior art, the utility model provides a pair of sand field sand-coating device can realize automatic sand-coating, conveniently fertilizes the operation such as etc.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a sand-lined device for a sand field according to a first embodiment of the present invention at a first viewing angle;

fig. 2 is a schematic structural view of a sand-lined device for a sand field according to a first embodiment of the present invention at a second viewing angle;

fig. 3 is a schematic view of a partial structure of a sand-coating device for a sand field according to a first embodiment of the present invention;

fig. 4 is a schematic structural view of a sand-lined device for a sand field according to a third embodiment of the present invention;

fig. 5 is a schematic structural view of the fertilizing box in fig. 4.

Icon: 100-sand-field sand-covering device; 110-a carrier rack; 111-a first cross-bar; 1111-a first mounting cylinder; 1113-second mounting cylinder; 113-a second cross bar; 1131 — a third mounting cylinder; 1133-a fourth mounting cylinder; 115-a mounting frame; 130-a first sand-coated wing panel; 131-a first sharp corner; 150-a second sand-coated wing panel; 151-second sharp corner; 170-fertilizing box; 171-fertilizing tube; 173-fertilization switch structure; 1731-a stopper plate; 1733-folding the edge by hand; 180-sand inlet; 190-a sand outlet; 191-connecting rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As disclosed in the background art, the prior art usually adopts a manual method to perform operations such as ditching, fertilizing, sand coating and the like, which is low in efficiency and high in labor cost. Furthermore, existing agricultural machines for fertilizing operations are usually simply subjected to a raking and plowing operation, which does not allow an effective sand-covering function. The utility model discloses an extra sand-coated pterygoid lamina that sets up covers sandy soil on the ditch ridge, realizes effectual sand-coated, guarantees final fertilization effect.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

First embodiment

Referring to fig. 1 to 3 in combination, the present embodiment provides a sand-lining device 100 for sand field, which can realize automatic sand lining and has good sand lining effect.

The sand-coating device 100 for the sand field provided by the embodiment comprises a bearing frame 110, a first sand-coating wing plate 130, a second sand-coating wing plate 150 and a fertilizing box 170, wherein the bearing frame 110 is used for being installed on a traveling vehicle body and traveling under the driving of the traveling vehicle body, the first sand-coating wing plate 130 and the second sand-coating wing plate 150 are oppositely arranged on two sides of the bearing frame 110, an included angle is formed between the first sand-coating wing plate 130 and the second sand-coating wing plate 150, a sand-coating cavity used for gathering sand is formed in the traveling direction of the bearing frame 110, the sand-coating cavity is provided with a sand inlet 180 and a sand outlet 190 which are opposite to each other, and the width of the sand inlet 180 is larger than that of the sand outlet 190. The fertilizer box 170 is provided on the carrier frame 110 above the sand lined cavity for putting fertilizer into the sand lined cavity.

In this embodiment, the carrier frame 110 is detachably mounted on a traveling vehicle body, which may be a walking tractor or a small tractor or other agricultural equipment.

It should be noted that, in this embodiment, the first sand-lining wing plate 130 and the second sand-lining wing plate 150 are both steel plate structures, and the bottom edges of the first sand-lining wing plate 130 and the second sand-lining wing plate 150 are on the same plane, so that in actual operation, the first sand-lining wing plate 130 and the second sand-lining wing plate 150 can push sand, so that the sand can enter the sand-lining cavity through the sand inlet 180, and then flow out of the sand-lining cavity through the sand outlet 190, and because the width of the sand outlet 190 is slightly smaller, the sand gathered in the sand-lining cavity can be drawn close to the middle position, thereby achieving the sand-lining effect.

In the present embodiment, the width of the sand outlet 190 refers to the distance between the rearmost end of the first sand lining panel 130 and the rearmost end of the second sand lining panel 150, and the width of the sand inlet 180 refers to the distance between the foremost end of the first sand lining panel 130 and the foremost end of the second sand lining panel 150. Specifically, the width of the sand inlet 180 is 50cm, and the width of the sand outlet 190 is 25cm, which is only an example and not a limitation.

In the present embodiment, the sand outlet 190 is provided with a connecting rod 191, and the connecting rod 191 connects the bottom ends of the first sand lining panel 130 and the second sand lining panel 150, respectively. Through setting up connecting rod 191 for first sand-coated plate and second sand-coated plate are connected as an organic wholely, have strengthened the structural strength of first sand-coated plate and second sand-coated plate, in addition, through setting up connecting rod 191, can transversely break up sand through connecting rod 191 when the sand goes out, make the sand-coated more even.

In the present embodiment, the first sand lining panel 130 and the second sand lining panel 150 are symmetrically disposed at both sides of the carrier frame 110, and the included angle between the first sand lining panel 130 and the second sand lining panel 150 is between 30 ° and 60 °. Specifically, the included angle between the first sand lining plate and the second sand lining plate is 45 degrees. Through setting up first sand lining pterygoid lamina 130 and second sand lining pterygoid lamina 150 symmetry for first sand lining pterygoid lamina 130 and second sand lining pterygoid lamina 150 are the same at the sand lining in-process effort, and then make sand and soil gather together to the two middle part as far as possible, guarantee the sand lining effect.

In the present embodiment, the first sand lining panel 130 has a first sharp corner portion 131 at an end thereof adjacent to the sand inlet 180, the bottom of the first sharp corner portion 131 is flush with the bottom of the first sand lining panel 130, the second sand lining panel 150 has a second sharp corner portion 151 at an end thereof adjacent to the sand inlet 180, and the bottom of the second sharp corner portion 151 is flush with the bottom of the second sand lining panel 150. By arranging the first sharp corner part 131 and the second sharp corner part 151, the first sharp corner part 131 and the second sharp corner part 151 can break earth when advancing, and the sand entering the sand-lined cavity is prevented from being too large in volume to affect the final outflow from the sand outlet 190.

In the present embodiment, the first sand lining wing panel 130 and the second sand lining wing panel 150 are both made of steel plates, and have high structural strength and low cost. Of course, in other preferred embodiments, the first sand lining wing 130 and the second sand lining wing 150 may be made of other materials, such as alloy or plastic, and are not limited herein.

The bearing frame 110 comprises a first cross bar 111 and a second cross bar 113, the first cross bar 111 and the second cross bar 113 are arranged in parallel, two ends of the first cross bar 111 are respectively connected with a first sand-coated wing plate 130 and a second sand-coated wing plate 150, two ends of the second cross bar 113 are respectively connected with the first sand-coated wing plate 130 and the second sand-coated wing plate 150, a first mounting structure used for being mounted on a travelling vehicle body is arranged on the first cross bar 111, and a second mounting structure used for being mounted on the travelling vehicle body is arranged on the second cross bar 113.

In this embodiment, a mounting frame 115 is further disposed between the first cross bar 111 and the second cross bar 113, and the fertilizer box 170 is disposed on the mounting frame 115 and between the first cross bar 111 and the second cross bar 113.

The first mounting structure comprises a first mounting cylinder 1111 and a second mounting cylinder 1113, the first mounting cylinder 1111 and the second mounting cylinder 1113 are arranged on the first cross bar 111 at intervals, the second mounting structure comprises a third mounting cylinder 1131 and a fourth mounting cylinder 1133, and the third mounting cylinder 1131 and the fourth mounting cylinder 1133 are arranged on the second cross bar 113 at intervals.

When actual installation, be provided with first collar and second collar on the automobile body of marcing, first collar setting wears to establish a billet between the three at first installation section of thick bamboo 1111 and the second installation section of thick bamboo 1113 simultaneously, and the billet passes first installation section of thick bamboo 1111, first collar and second installation section of thick bamboo 1113 in proper order to connect the three as an organic whole. The second collar setting is worn to establish another billet between the three simultaneously between a third installation section of thick bamboo 1131 and a fourth installation section of thick bamboo 1133, and the billet passes a third installation section of thick bamboo 1131, a second collar and a fourth installation section of thick bamboo 1133 in proper order to connect the three as an organic whole.

Referring to fig. 4 and 5, at least three fertilizer tubes 171 are disposed at the bottom of the fertilizer box 170, the three fertilizer tubes 171 are spaced apart from each other in a direction perpendicular to the traveling direction of the carrier frame 110, and each fertilizer tube 171 is provided with a fertilizer opening and closing structure 173, and the fertilizer opening and closing structure 173 is used for opening or closing the corresponding fertilizer tube 171.

It should be noted that the three fertilizer pipes 171 are plow-shaped and protrude 5cm from the bottom surface, so as to facilitate fertilizer application. Specifically, the tip of three fertilization pipe all is the wedge, and wedge point portion is towards the place ahead of automobile body, conveniently goes deep into the sand and fertilizes, is convenient for simultaneously not hard up the root system in the soil, reaches the intertillage, prunes the effect of root.

In this embodiment, the fertilizing switch structure 173 includes a stop plate 1731, a stop gap is opened in the middle of the fertilizing tube 171, and the stop plate 1731 is inserted into the stop gap for blocking the fertilizing tube 171. Specifically, the edge of each stop plate 1731 is provided with a handheld folding edge 1733, when the fertilizing tube 171 needs to be opened, the handheld folding edge 1733 is held by hand to pull the stop plate 1731 outwards, so that the fertilizing tube 171 is conducted, and fertilizer in the fertilizing box 170 enters the sand coating cavity through the fertilizing tube 171 and finally falls into the furrow ridge below; when the fertilizing tube 171 needs to be plugged, the hand-held folded edge 1733 is held by hand to push the stop plate 1731 inwards, so that the stop plate 1731 is transversely placed in the fertilizing tube 171, and the plugging of the fertilizing tube 171 is realized; in special cases, the fertilizing tube 171 can be partially blocked, and the passing area of the fertilizing tube 171 can be adjusted through adjusting the position of the stop plate 1731, so that the fertilizing speed can be adjusted.

It should be noted that in this embodiment, the bottom opening of the fertilizing tube 171 is located between the sand outlet 190 and the sand inlet 180, and fertilizer is fed into the furrows before the sand is closed. And at least one of the three fertilizing tubes 171 is opened to realize fertilizing action, of course, any two or three of the fertilizing tubes can be opened, and the requirements of different fertilizing amounts can be met through different combination forms. The fertilizer in the fertilizer box 170 may be a single phosphate fertilizer or a single nitrogen fertilizer, or may be a compound fertilizer formed by a plurality of fertilizers.

In summary, the present embodiment provides a sand lining apparatus 100, which comprises a first sand lining panel 130 and a second sand lining panel 150 respectively disposed at two sides of a carrier frame 110, and such that a sand lined cavity is formed between first sand lining panel 130 and second sand lining panel 150, in actual operation, the carrier frame 110 moves along with the traveling vehicle body to drive the first sand-lined wing plate 130 and the second sand-lined wing plate 150 to move, sand enters the sand-lined cavity through the sand inlet 180 and flows out through the sand outlet 190, since the width of the sand inlet 180 is greater than the width of the sand outlet 190, the first sand-lining wing panel 130 and the second sand-lining wing panel 150 have a function of gathering sand, thereby realized covering the sand and soil of ditch ridge both sides on the ditch ridge, realized the sand-coating function, fertilize the action through fertilization case 170 simultaneously, conveniently fertilize the back and carry out quick sand-coating, saved the manpower.

Second embodiment

The present embodiment provides a sand-covering machine for sand field, comprising a traveling vehicle body and a sand-covering device 100, wherein the basic structure and principle of the sand-covering device 100 and the technical effects thereof are the same as those of the first embodiment, and for the sake of brief description, the corresponding contents of the first embodiment can be referred to for the parts not mentioned in the present embodiment.

In this embodiment, the sand-lining device 100 includes a carrier frame 110, a first sand-lining wing panel 130 and a second sand-lining wing panel 150, the first sand-lining wing panel 130 and the second sand-lining wing panel 150 are oppositely disposed at two sides of the carrier frame 110, and an included angle is formed between the first sand-lining wing panel 130 and the second sand-lining wing panel 150 to form a sand-lining cavity for gathering sand, the sand-lining cavity has a sand inlet 180 and a sand outlet 190 opposite to each other in the traveling direction of the carrier frame 110, and the width of the sand inlet 180 is greater than the width of the sand outlet 190. The bearing frame 110 is installed on the traveling vehicle body and travels by being driven by the traveling vehicle body.

In this embodiment, the carrier frame 110 is detachably mounted on a traveling vehicle body, which may be a walking tractor or a small tractor or other agricultural equipment.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a sand field sand-coating device, its characterized in that, is including bearing frame, first sand-coating pterygoid lamina and second sand-coating pterygoid lamina, bear the frame and be used for installing on advancing the automobile body and advance under advancing the drive of automobile body, first sand-coating pterygoid lamina with second sand-coating pterygoid lamina sets up relatively bear the both sides of frame, just first sand-coating pterygoid lamina with it sets up and forms the sand-coating cavity that is used for gathering together sand between the second sand-coating pterygoid lamina to be the contained angle, the sand-coating cavity is in it has relative sand inlet and sand outlet to bear the advancing direction of frame, sand inlet's width is greater than sand outlet's width.

2. The sand lining device of claim 1, wherein the sand outlet is provided with a connecting rod connecting a bottom end of the first sand lining panel and a bottom end of the second sand lining panel, respectively.

3. The sand casting device of claim 2 wherein the first and second sand flaps are symmetrically disposed on opposite sides of the carrier frame and the angle between the first and second sand flaps is between 30 ° and 60 °.

4. The sand lining device of claim 1, wherein the first sand lining wing panel has a first pointed portion at an end thereof adjacent to the sand inlet, and a bottom of the first pointed portion is flush with a bottom of the first sand lining wing panel, and the second sand lining wing panel has a second pointed portion at an end thereof adjacent to the sand inlet, and a bottom of the second pointed portion is flush with a bottom of the second sand lining wing panel.

5. The sand coating device for the sand field according to claim 1, wherein the carrier frame comprises a first cross bar and a second cross bar, the first cross bar and the second cross bar are arranged in parallel, two ends of the first cross bar are respectively connected with the first sand coating wing plate and the second sand coating wing plate, two ends of the second cross bar are respectively connected with the first sand coating wing plate and the second sand coating wing plate, the first cross bar is provided with a first mounting structure for mounting on the traveling vehicle body, and the second cross bar is provided with a second mounting structure for mounting on the traveling vehicle body.

6. The sand lined device of claim 5, wherein the first mounting structure comprises a first mounting cylinder and a second mounting cylinder, the first mounting cylinder and the second mounting cylinder being spaced apart on the first rail, and the second mounting structure comprises a third mounting cylinder and a fourth mounting cylinder, the third mounting cylinder and the fourth mounting cylinder being spaced apart on the second rail.

7. The sand coating apparatus of claim 1 further comprising a fertilizer box disposed on the carrier frame above the sand coating cavity for feeding fertilizer into the sand coating cavity.

8. The sand coating device for the sand field as claimed in claim 7, wherein the bottom of the fertilizer box is provided with at least three fertilizer pipes, the three fertilizer pipes are arranged at intervals along a direction perpendicular to the traveling direction of the bearing rack, and each fertilizer pipe is provided with a fertilizer switch structure for turning on or off the corresponding fertilizer pipe.

9. The sand coating device for the sand field as recited in claim 8, wherein the fertilizing switch structure comprises a stop plate, a stop gap is opened at the middle part of the fertilizing tube, and the stop plate is inserted into the stop gap for blocking the fertilizing tube.

10. A sand-working machine comprising a travelling vehicle body and a sand-working device as claimed in any one of claims 1 to 9, said carrier frame being mounted on and travelling by said travelling vehicle body.

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