CN116374500A

CN116374500A - Bulk building material conveying device

Info

Publication number: CN116374500A
Application number: CN202310635637.7A
Authority: CN
Inventors: 石磊; 陈晓可; 王占立; 李应保; 顾松安; 常中华; 王广兵; 张秀霞
Original assignee: Guochang Degong Shaanxi Construction Engineering Co ltd
Current assignee: Guochang Degong Shaanxi Construction Engineering Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-07-04
Anticipated expiration: 2043-06-01
Also published as: CN116374500B

Abstract

The invention belongs to the technical field of material lifts, and particularly relates to a bulk building material conveying device, which comprises a shell and a hopper; the hopper is arranged in the shell, the shell comprises a feed inlet and a discharge outlet, materials enter the shell through the feed inlet, and the materials are discharged out of the shell through the discharge outlet; the hopper is used for storing materials and unloading the materials, has a storage state and an unloading state, and can be moved from the feed inlet to the discharge outlet; when the hopper is in a storage state, materials enter the hopper through the feed inlet, and when the hopper is in an unloading state, the hopper is positioned at the discharge port, and the materials are discharged from the hopper and discharged from the shell through the discharge port; when the hopper moves to the position of the discharge hole, the moving direction of the hopper is consistent with the falling direction of the materials; in the process of charging the hopper, the moving direction of the hopper is the same as the moving direction of the material, so that the relative speed of the hopper and the material is reduced, the abrasion of the hopper is reduced, and the service life of the hopper is prolonged.

Description

Bulk building material conveying device

Technical Field

The invention belongs to the technical field of material lifts, and particularly relates to a bulk building material conveying device.

Background

The material hoist is used for lifting materials to a material transportation machine with a certain height, and the material hoist can hold the materials at the lower part through the hopper, and convey the hopper to the higher part through the chain belt, so that the transfer of the materials from the lower part to the higher part is realized. When the traditional bucket type material hoister is used, the moving direction of the hopper is opposite to the moving direction of the material, so that the abrasion of the material to the hopper is increased, and the use cost and the maintenance cost of the bucket type material hoister are increased.

Disclosure of Invention

Based on the above, it is necessary to provide a bulk building material conveying device in order to solve the problems that the hopper of the existing bucket material lifter is easy to wear and the use cost and the maintenance cost of the bucket material lifter are increased.

The above purpose is achieved by the following technical scheme:

a bulk building material conveying apparatus includes a housing and a hopper.

The hopper is arranged in the shell, the shell comprises a feed inlet and a discharge outlet, materials enter the shell through the feed inlet, and the materials are discharged out of the shell through the discharge outlet.

The hopper is used for storing materials and unloading the materials, and has a storage state and an unloading state, and the hopper can be moved from the feeding hole to the discharging hole.

When the hopper is in the storage state, materials enter the hopper through the feed inlet, when the hopper is in the unloading state, the hopper is positioned at the discharge port, and the materials are discharged from the hopper and discharged from the shell through the discharge port.

When the hopper moves to the position of the discharge hole, the moving direction of the hopper is consistent with the falling direction of the material.

Further, the hopper comprises a cloth bag and a limiting plate, and the cloth bag is fixedly connected with the limiting plate.

The cloth bag is used for storing materials, and the limiting plate drives the cloth bag to move. The cloth bag is provided with a first contact surface and a second contact surface, the first contact surface and the second contact surface can be in contact with materials, and the first contact surface and the second contact surface can be converted into an inner surface or an outer surface.

The second contact surface is on the outer face when the first contact surface is on the inner face, the second contact surface is on the inner face when the first contact surface is on the outer face, and the first contact surface or the second contact surface is capable of contacting material when the first contact surface is on the inner face.

Reversing the bottom of the hopper to change the first contact surface from the inner face to the outer face or the second contact surface from the inner face to the outer face, thereby placing the hopper in the unloaded state.

Further, the hopper further comprises a first supporting rod and a second supporting rod, a limiting groove is formed in the limiting plate, and the first supporting rod and the second supporting rod slide on the limiting groove.

The cloth bag is fixedly connected to the first support rod and the second support rod, the first support rod and the second support rod are arranged in parallel, the plane where the first support rod and the second support rod are located is a first plane, and the first plane is always kept horizontal when the hopper is in a storage state.

Further, the sliding device further comprises a first sliding groove and a second sliding groove, the first sliding groove and the second sliding groove are arranged in parallel, the first supporting rod can slide in the first sliding groove or the second sliding groove, and the second supporting rod can slide in the first sliding groove or the second sliding groove.

The starting position of the first sliding groove is a first end point, the tail position of the first sliding groove is a second end point, the starting position of the second sliding groove is a third end point, and the tail position of the second sliding groove is a fourth end point.

The novel sliding chute comprises a first end point, a second end point, a third end point, a fourth end point and a fourth end point, and is characterized by further comprising a third sliding chute and a fourth sliding chute, wherein the depth of the fourth sliding chute is larger than that of the third sliding chute, one end of the third sliding chute is connected with the first end point, the other end of the third sliding chute is connected with the fourth end point, one end of the fourth sliding chute is connected with the second end point, and the other end of the fourth sliding chute is connected with the third end point.

The first support rod can slide on the third sliding groove or the fourth sliding groove, and the second support rod can slide on the third sliding groove or the fourth sliding groove, so that the first plane is always parallel to the horizontal plane.

Further, the third sliding groove and the fourth sliding groove are intersected at a fifth end point, a limiting piece is arranged on the fifth end point, and the limiting piece is hinged with the third sliding groove.

The limiting piece is used for preventing the first supporting rod from entering the fourth sliding groove from the fifth end point when sliding on the third sliding groove or preventing the first supporting rod from entering the third sliding groove from the fifth end point when sliding on the fourth sliding groove.

The limiting piece is also used for preventing the second supporting rod from entering the fourth sliding groove from the fifth end point when sliding on the third sliding groove or preventing the second supporting rod from entering the third sliding groove from the fifth end point when sliding on the fourth sliding groove.

Further, the hopper also comprises a balancing weight.

The balancing weight is arranged at the bottom of the cloth bag, when the hopper is in the unloading state, the cloth bag is turned over, and the balancing weight enables materials in the cloth bag to be discharged thoroughly through self gravity.

Further, the hopper further comprises a first telescopic rod and a second telescopic rod, the first telescopic rod and the second telescopic rod are arranged on the balancing weight and can be lengthened or shortened, the first telescopic rod is in contact with the first contact surface, and the second telescopic rod is in contact with the second contact surface.

When the first contact surface is the outer surface, the second contact surface is the inner surface, the first telescopic rod is extended, the second telescopic rod is shortened, and when the first contact surface is the inner surface, the second contact surface is the outer surface, the first telescopic rod is shortened, and the second telescopic rod is extended.

The telescopic device further comprises a fifth sliding groove, the fifth sliding groove is arranged on the shell, and the first telescopic rod or the second telescopic rod can be in sliding fit with the fifth sliding groove in an extending state.

When the fifth sliding groove is matched with the first telescopic rod or the fifth sliding groove is matched with the second telescopic rod, the friction force born by the first telescopic rod or the second telescopic rod is larger and larger, so that the first plane of the first telescopic rod or the second telescopic rod is perpendicular to the fifth sliding groove through the cloth bag.

Further, it also includes a conveying assembly to move the hopper from the feed port to the discharge port or to move the hopper from the discharge port to the feed port.

Further, the conveying assembly comprises a belt wheel, a driving motor and a driving belt, wherein the driving motor can drive the belt wheel to rotate, the belt wheel rotates to drive the driving belt to rotate, and the driving belt rotates to drive the hopper to move.

Further, the hopper comprises a connecting plate and a limiting plate, wherein the connecting plate is fixedly connected with the limiting plate, the connecting plate is fixedly connected with the driving belt, and the driving belt rotates and drives the hopper to rotate through the connecting plate.

The beneficial effects of the invention are as follows:

1. in the process of charging the hopper, the moving direction of the hopper is the same as the moving direction of the material, so that the relative speed of the hopper and the material is reduced, the abrasion of the hopper is reduced, and the service life of the hopper is prolonged.

2. When the hopper moves, the first plane is always kept horizontal, the opening of the cloth bag is always kept upwards, and materials are prevented from being scattered from the cloth bag in the moving process of the hopper.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the bulk building material conveyor assembly of the present invention;

FIG. 2 is a front view of one embodiment of the bulk building material conveyor assembly of the present invention;

FIG. 3 is a top view of one embodiment of the bulk building material conveyor assembly of the present invention;

FIG. 4 is a cross-sectional view at A-A in FIG. 3;

FIG. 5 is a cross-sectional view at B in FIG. 4;

FIG. 6 is a schematic view of the structure of a hopper of one embodiment of the bulk building material conveyor assembly of the present invention;

FIG. 7 is a top view of a hopper of one embodiment of a bulk building material conveyor assembly of the present invention;

FIG. 8 is a cross-sectional view taken at C-C of FIG. 7;

wherein:

100. a housing; 101. a base; 103. a feed inlet; 106. a driving motor; 107. a discharge port;

200. a transport assembly; 201. a belt wheel; 202. a transmission belt; 203. a first chute; 204. a second chute; 205. a third chute; 206. a fourth chute; 207. a fifth chute; 210. a limiting piece;

300. a hopper; 301. a connecting plate; 302. a limiting plate; 303. a limit groove; 304. a first support bar; 305. a first telescopic rod; 306. a cloth bag; 307. a second telescopic rod; 308. a first elastic member; 309. a second elastic member; 310. a telescopic block; 320. a second support bar; 330. balancing weight; 340. a first contact surface; 350. a second contact surface;

400. a first endpoint; 410. a second endpoint; 420. a third endpoint; 430. a fourth endpoint; 440. and a fifth endpoint.

Detailed Description

The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

A bulk building material conveying apparatus provided in accordance with an embodiment of the present invention is described below with reference to fig. 1 to 8.

A bulk building material conveying apparatus capable of conveying material from a low place to a high place, comprising a housing 100 and a hopper 300; the hopper 300 is arranged in the shell 100, the shell 100 comprises a feed port 103 and a discharge port 107, materials enter the shell 100 through the feed port 103, and the materials are discharged out of the shell 100 through the discharge port 107; hopper 300 is used to store and unload materials and has a stored state and an unloaded state, hopper 300 being movable from feed port 103 to discharge port 107.

Hopper 300 is in a storage state, material enters hopper 300 through feed port 103, and hopper 300 is in an unloading state, hopper 300 is positioned at discharge port 107, material is discharged from hopper 300, and material is discharged from discharge port 107 to housing 100.

When hopper 300 moves to discharge port 107, the moving direction of hopper 300 is consistent with the falling direction of the material.

A base 101 is disposed below the housing 100, the base 101 being disposed in contact with the floor or other counter.

The height of feed inlet 103 is lower than the height of discharge gate 107, in feed inlet 103 department, hopper 300 is in the storage state, the material enters into hopper 300, hopper 300 is moved to discharge gate 107 department by feed inlet 103, hopper 300 is in the uninstallation state, hopper 300 is with the material from discharge gate 107 discharge housing 100 to realized the material and carried to the eminence by the eminence, in the in-process that hopper 300 is moved to discharge gate 107 by feed inlet 103, the direction of movement of hopper 300 is the same with the direction of movement of material, the relative speed of hopper 300 and material has been reduced, the wearing and tearing of hopper 300 have been reduced, increase hopper 300's life, the serious problem of hopper 300 wearing and tearing among the prior art has been avoided.

Further, the hopper 300 comprises a cloth bag 306 and a limiting plate 302, wherein the cloth bag 306 is fixedly connected with the limiting plate 302; the cloth bag 306 is used for storing materials, and the limiting plate 302 drives the cloth bag 306 to move; the cloth bag 306 has a first contact surface 340 and a second contact surface 350, the first contact surface 340 and the second contact surface 350 being capable of contacting the material, the first contact surface 340 and the second contact surface 350 being capable of being converted into an inner or outer surface.

The second contact surface 350 is on the outside when the first contact surface 340 is on the inside, the second contact surface 350 is on the inside when the first contact surface 340 is on the outside, and either the first contact surface 340 or the second contact surface 350 is capable of contacting the material when on the inside.

Reversing the bottom surface of the hopper 300 changes the first contact surface 340 from the inner surface to the outer surface or the second contact surface 350 from the inner surface to the outer surface, thereby placing the hopper 300 in an unloaded state.

It can be appreciated that, in the initial state, the hopper 300 is in a storage state, the first contact surface 340 is an inner surface, the first contact surface 340 is in contact with the material, the hopper 300 is moved from the feeding warehouse to the discharging port 107, the hopper 300 is in an unloading state, the cloth bag 306 is turned over from inside to outside, the first contact surface 340 is converted to an outer surface, the second contact surface 350 is converted to an inner surface, the first contact surface 340 is in contact with the material when the first contact surface 340 is in the inner surface, the cloth bag 306 is turned over, and the first contact surface 340 pushes and pushes the material in the cloth bag 306 out of the cloth bag 306, so as to realize unloading of the material by the cloth bag 306; when the second contact surface 350 is converted into the inner surface, the cloth bag 306 is moved to the feed inlet 103, the cloth bag 306 is converted into a storage state, the material enters the cloth bag 306 from the feed inlet 103 and contacts with the second contact surface 350, the cloth bag 306 is moved to the discharge outlet 107, the cloth bag 306 is converted into an unloading state from the storage state, the cloth bag 306 is turned over from inside to outside, the second contact surface 350 is converted from the inner surface to the outer surface, and when the second contact surface 350 is converted, the second contact surface 350 pushes and pushes the contacted material out of the cloth bag 306, so that the cloth bag 306 is made of flexible materials, the noise is low, and the weight is light.

Further, the hopper 300 further includes a first supporting rod 304 and a second supporting rod 320, the limiting plate 302 is provided with a limiting groove 303, and the first supporting rod 304 and the second supporting rod 320 slide on the limiting groove 303.

The cloth bag 306 is fixedly connected to the first support rod 304 and the second support rod 320, the first support rod 304 and the second support rod 320 are arranged in parallel, the plane where the first support rod 304 and the second support rod 320 are located is a first plane, and the first plane is always kept horizontal when the hopper 300 is in a storage state.

When the hopper 300 moves, the first plane is always kept horizontal, so that the opening of the cloth bag 306 is always upward, and materials are prevented from being scattered from the cloth bag 306 in the moving process of the hopper 300.

Further, it further includes a first sliding groove 203 and a second sliding groove 204, the first sliding groove 203 and the second sliding groove 204 are arranged in parallel, the first supporting rod 304 can slide in the first sliding groove 203 or the second sliding groove 204, and the second supporting rod 320 slides in the first sliding groove 203 or the second sliding groove 204.

The first chute 203 starts at a first end 400, the first chute 203 ends at a second end 410, the second chute 204 starts at a third end 420, and the second chute 204 ends at a fourth end 430.

It further includes a third chute 205 and a fourth chute 206, the depth of the fourth chute 206 is greater than the depth of the third chute 205, one end of the third chute 205 is connected to the first end point 400, the other end of the third chute 205 is connected to the fourth end point 430, one end of the fourth chute 206 is connected to the second end point 410, and the other end of the fourth chute 206 is connected to the third end point 420.

The first support bar 304 can slide on the third chute 205 or the fourth chute 206, and the second support bar 320 can slide on the third chute 205 or the fourth chute 206, so that the first plane is always parallel to the horizontal plane.

Hopper 300 is capable of sliding on first chute 203, second chute 204, third chute 205 and fourth chute 206, so that hopper 300 can move circularly between feed inlet 103 and discharge outlet 107, and further the effect that hopper 300 transfers material from a low position to a high position is achieved.

Further, the third chute 205 and the fourth chute 206 intersect at a fifth end point 440, and a limiting plate 210 is disposed on the fifth end point 440, and the limiting plate 210 is hinged with the third chute 205.

The limiting piece 210 is used for preventing the first supporting rod 304 from entering the fourth sliding slot 206 from the fifth end point 440 when sliding on the third sliding slot 205 or preventing the first supporting rod 304 from entering the third sliding slot 205 from the fifth end point 440 when sliding on the fourth sliding slot 206.

The limiting piece 210 is also used for preventing the second supporting rod 320 from sliding on the third sliding slot 205 from entering the fourth sliding slot 206 from the fifth end point 440 or preventing the second supporting rod 320 from sliding on the fourth sliding slot 206 from entering the third sliding slot 205 from the fifth end point 440.

The limiting plate 210 is disposed at the fifth end point 440, one end of the limiting plate 210 is hinged to the third sliding groove 205, and the other end of the limiting plate 210 is disposed in contact with the third sliding groove 205.

It should be understood that the first support bar 304 and the second support bar 320 are both mechanically structured support bars with the same structure, and the "first" and the "second" are added in front of the support bars for simplicity and convenience of understanding only; it will be appreciated that the third runner 205 and the third runner 205 are mechanical structures of the type of rail runner in nature, and that "third" and "fourth" are added before the runners for convenience and simplicity of description. When the support bar moves on the chute and passes through the fifth end point 440, the limiting piece 210 can ensure that the support bar always keeps moving on the same chute, so that other chutes are not changed when the support bar passes through the fifth end point 440.

In one embodiment, the device further comprises a second elastic member 309 and a telescopic block 310, one end of the second elastic member 309 is fixedly connected to the supporting rod, the other end of the second elastic member 309 is fixedly connected to the telescopic block 310, the supporting rod is in sliding fit on the sliding groove through the telescopic block 310, and the adaptability of the supporting rod is improved through the expansion and contraction of the second elastic member 309.

Further, hopper 300 also includes a counterweight 330.

The balancing weight 330 is arranged at the bottom of the cloth bag 306, when the hopper 300 is in an unloading state, the cloth bag 306 is turned over, and the balancing weight 330 enables materials in the cloth bag 306 to be discharged more thoroughly through self gravity.

When the cloth bag 306 is turned over to enable the first contact surface 340 and the second contact surface 350 to switch between the inner surface and the outer surface, the balancing weight 330 can utilize its own gravity to promote the inversion of the cloth bag 306, so as to ensure the unloading effect of the materials in the hopper 300.

Further, the hopper 300 further includes a first telescopic rod 305 and a second telescopic rod 307, the first telescopic rod 305 and the second telescopic rod 307 are disposed on the balancing weight 330 and can be extended or shortened, the first telescopic rod 305 is disposed in contact with the first contact surface 340, and the second telescopic rod 307 is disposed in contact with the second contact surface 350.

When the first contact surface 340 is the outer surface and the second contact surface 350 is the inner surface, the first telescopic rod 305 is extended, the second telescopic rod 307 is shortened, and when the first contact surface 340 is the inner surface and the second contact surface 350 is the outer surface, the first telescopic rod 305 is shortened, and the second telescopic rod 307 is extended.

It further comprises a fifth runner 207, the fifth runner 207 being provided on the housing 100, the first telescopic link 305 or the second telescopic link 307 being capable of sliding engagement with the fifth runner 207 in an extended state.

When the fifth sliding groove 207 is matched with the first telescopic rod 305 or the fifth sliding groove 207 is matched with the second telescopic rod 307, the friction force born by the first telescopic rod 305 or the second telescopic rod 307 is larger and larger, so that the first plane of the first telescopic rod 305 or the second telescopic rod 307 is perpendicular to the fifth sliding groove 207 through the cloth bag 306.

It will be appreciated that the mechanical structure of the first telescoping rod 305 and the second telescoping rod 307 are identical, and that for simplicity and ease of description only, "first" and "second" are added in front of the telescoping rods to distinguish between the telescoping rods, the telescoping rods described below being collectively referred to as the first telescoping rod 305 and the second telescoping rod 307.

Still be provided with first elastic component 308 between telescopic link and the balancing weight 330, the one end rigid coupling of first elastic component 308 is on the telescopic link, and the other end rigid coupling of first elastic component 308 is on balancing weight 330, and first elastic component 308 exerts effort to the telescopic link, makes the trend of telescopic link extension or extension, is provided with the chamfer on the limiting plate 302, makes things convenient for the telescopic link to shorten.

The fifth chute 207 has a start end and a tail end, when the start end of the fifth chute 207 is slidably matched with the telescopic rod, the friction force born by the telescopic rod is larger and larger, the telescopic rod pulls up the cloth bag 306, the opening of the cloth bag 306 faces the discharge hole 107, and meanwhile, the first plane is perpendicular to the fifth chute 207, so that materials can be conveniently discharged.

In one embodiment, it further includes a transport assembly 200, transport assembly 200 being used to move hopper 300 from feed port 103 to discharge port 107 or to move hopper 300 from discharge port 107 to feed port 103.

In one embodiment, the conveying assembly 200 includes a pulley 201, a driving motor 106 and a driving belt 202, wherein the driving motor 106 can drive the pulley 201 to rotate, the pulley 201 rotates to drive the driving belt 202 to rotate, and the driving belt 202 rotates to drive the hopper 300 to move.

In one embodiment, the hopper 300 comprises a connecting plate 301 and a limiting plate 302, the connecting plate 301 is fixedly connected with the driving belt 202, and the driving belt 202 rotates and drives the hopper 300 to rotate through the connecting plate 301.

When the feeding device is used, the driving motor 106 rotates to drive the belt pulley 201 to rotate, the belt pulley 201 rotates to drive the driving belt 202 to rotate, the driving belt 202 rotates to drive the connecting plate 301 to rotate, the connecting plate 301 rotates to drive the cloth bag 306 to rotate, the supporting rod slides on the chute, the hopper 300 is in a storage state when the feeding hole 103, materials enter the hopper 300 from the feeding hole 103, the conveying assembly 200 moves the hopper 300 to the discharging hole 107, the hopper 300 is in an unloading state, the fifth chute 207 is matched with the telescopic rod, the opening of the cloth bag 306 faces the discharging hole 107, the balancing weight 330 turns the inner face and the outer face of the cloth bag 306, the materials are discharged out of the cloth bag 306 and are discharged out of the shell 100 through the discharging hole 107, and the materials are transferred from a low place to a high place.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A bulk building material conveying apparatus comprising a housing and a hopper;

the hopper is arranged in the shell, the shell comprises a feed inlet and a discharge outlet, materials enter the shell through the feed inlet, and the materials are discharged out of the shell through the discharge outlet;

the hopper is used for storing materials and unloading the materials, has a storage state and an unloading state, and can move from the feed inlet to the discharge outlet;

when the hopper is in the storage state, materials enter the hopper through the feed inlet, and when the hopper is in the unloading state, the hopper is positioned at the discharge port, and the materials are discharged from the hopper and discharged from the shell through the discharge port;

2. The bulk building material conveying device according to claim 1, wherein the hopper comprises a cloth bag and a limiting plate, the cloth bag being fixedly connected with the limiting plate;

the cloth bag is used for storing materials, and the limiting plate drives the cloth bag to move; the cloth bag is provided with a first contact surface and a second contact surface, the first contact surface and the second contact surface can be in contact with materials, and the first contact surface and the second contact surface can be converted into inner surfaces or outer surfaces;

the second contact surface being on the outer face when the first contact surface is on the inner face, the second contact surface being on the inner face when the first contact surface is on the outer face, the first contact surface or the second contact surface being capable of contacting material when on the inner face;

3. The bulk building material conveying device according to claim 2, wherein the hopper further comprises a first support rod and a second support rod, the limiting plate is provided with a limiting groove, and the first support rod and the second support rod slide on the limiting groove;

4. A bulk building material conveying apparatus according to claim 3, further comprising a first chute and a second chute, the first chute and the second chute being arranged in parallel, the first support bar being slidable in either the first chute or the second chute, the second support bar being slidable in either the first chute or the second chute;

the starting position of the first sliding groove is a first end point, the tail position of the first sliding groove is a second end point, the starting position of the second sliding groove is a third end point, and the tail position of the second sliding groove is a fourth end point;

the device further comprises a third chute and a fourth chute, wherein the depth of the fourth chute is larger than that of the third chute, one end of the third chute is connected with the first end point, the other end of the third chute is connected with the fourth end point, one end of the fourth chute is connected with the second end point, and the other end of the fourth chute is connected with the third end point;

5. The bulk building material conveying apparatus of claim 4, wherein the third chute and the fourth chute intersect at a fifth end point, a limit tab is provided on the fifth end point, the limit tab being hinged to the third chute;

the limiting piece is used for preventing the first supporting rod from entering the fourth chute from the fifth end point when sliding on the third chute or preventing the first supporting rod from entering the third chute from the fifth end point when sliding on the fourth chute;

6. The bulk building material conveying apparatus of claim 5, wherein the hopper further comprises a counterweight;

7. The bulk building material conveying apparatus according to claim 6, wherein the hopper further comprises a first telescopic rod and a second telescopic rod, the first telescopic rod and the second telescopic rod being arranged on the counterweight and capable of being extended or shortened, the first telescopic rod being arranged in contact with the first contact surface, the second telescopic rod being arranged in contact with the second contact surface;

when the first contact surface is the outer surface and the second contact surface is the inner surface, the first telescopic rod is extended, the second telescopic rod is shortened, and when the first contact surface is the inner surface and the second contact surface is the outer surface, the first telescopic rod is shortened, and the second telescopic rod is extended;

the telescopic device further comprises a fifth sliding chute, the fifth sliding chute is arranged on the shell, and the first telescopic rod or the second telescopic rod can be in sliding fit with the fifth sliding chute in an extension state;

8. The bulk building material conveying apparatus of claim 1, further comprising a conveying assembly to move the hopper from the feed port to the discharge port or to move the hopper from the discharge port to the feed port.

9. The bulk building material conveying apparatus according to claim 8, wherein the conveying assembly comprises a belt wheel, a driving motor and a driving belt, the driving motor is capable of driving the belt wheel to rotate, the belt wheel rotates to drive the driving belt to rotate, and the driving belt rotates to drive the hopper to move.

10. The bulk building material conveying apparatus according to claim 9, wherein the hopper comprises a connecting plate and a limiting plate, the connecting plate is fixedly connected with the limiting plate, and the connecting plate is fixedly connected with the driving belt, and the driving belt rotates and drives the hopper to rotate through the connecting plate.