CN211436900U

CN211436900U - Aggregate bin of mixing station

Info

Publication number: CN211436900U
Application number: CN201922286582.5U
Authority: CN
Inventors: 刘树刚; 雷长庚; 赵连江; 马大勇
Original assignee: Beijing Guyun Concrete Co ltd
Current assignee: Beijing Guyun Concrete Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-09-08
Anticipated expiration: 2029-12-17

Abstract

The utility model relates to a mixing plant aggregate bin, which comprises a bin, wherein the upper end and the lower end of the bin are respectively provided with a feed inlet and a discharge outlet, the bin is provided with a discharge door at the discharge outlet, an upper sieve plate is arranged in the bin, an upper sieve mesh is arranged on the upper sieve plate, a movable sieve plate mechanism is arranged in the bin, and the movable sieve plate mechanism is positioned at the lower end of the upper sieve plate; the movable sieve plate mechanism comprises an installation frame arranged in the bin, a lower sieve plate arranged in the installation frame and a transmission assembly arranged for driving the installation frame to slide, lower sieve holes are formed in the lower sieve plate, sliding grooves and two sliding grooves are formed in the inner walls of the two sides of the bin, and the two sides of the installation frame are connected in the two sliding grooves in a sliding mode respectively. The utility model discloses can change the aperture of filter sieve, have and select the advantage that accords with the required aggregate of building according to the size requirement of different buildings to the aggregate.

Description

Aggregate bin of mixing station

Technical Field

The utility model relates to an aggregate storehouse field, in particular to mixing plant aggregate storehouse.

Background

The concrete mixing plant is a large-scale device for mixing concrete, which comprises a plurality of parts, including an aggregate bin, a conveying system and a mixing system, wherein the aggregate bin is mainly used for storing aggregates such as sand and stone needed in the concrete.

Patent documents with the prior publication authorization date of 2019.11.22 and publication authorization number of CN209665892U disclose a discharge anti-blocking aggregate bin, which belong to the field of aggregate bins and solve the problem that aggregates in the prior art can be blocked at a discharge gate. The material bin comprises a material inlet and a material outlet, wherein the material bin is rotatably connected with two material discharging doors and a door opening cylinder which is correspondingly arranged, a shunting assembly for adjusting the material outlet is arranged in the material bin, the shunting assembly comprises a fixed rod which is fixed in the material bin and two partition plates which are arranged on the fixed rod, the side edges of the two partition plates are abutted against the inner wall of the material bin, and the two partition plates respectively form two material outlets with the inner wall of the material bin; when the two discharge doors are in an open state, the two discharge ports are respectively positioned above the two discharge doors; the surfaces of the discharge doors opposite to the discharge port are arc surfaces, and when the two discharge doors are in a closed state, the heights of the two sides of each arc surface are higher than that of the middle part.

Although the device can be used for screening aggregate, the aggregate size is divided into a plurality of sizes in actual production, the required aggregate particle size is different according to the requirements of different buildings, and the screening pore size cannot be changed. Therefore, the device can not meet the requirements of different buildings for aggregates with different sizes.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a stirring station aggregate storehouse, the device can change the aperture of filter sieve, has and selects the advantage that accords with the required aggregate of building according to the size requirement of different buildings to the aggregate.

The above technical purpose of the present invention can be achieved by the following technical solutions: a mixing station aggregate bin comprises a bin body, wherein the upper end and the lower end of the bin body are respectively provided with a feed inlet and a discharge outlet, a discharge door is arranged at the discharge outlet of the bin body, an upper sieve plate is arranged in the bin body, an upper sieve mesh is arranged on the upper sieve plate, a movable sieve plate mechanism is arranged in the bin body, and the movable sieve plate mechanism is positioned at the lower end of the upper sieve plate; the movable sieve plate mechanism comprises an installation frame arranged in the bin, a lower sieve plate arranged in the installation frame and a transmission assembly arranged for driving the installation frame to slide, lower sieve holes are formed in the lower sieve plate, sliding grooves and two sliding grooves are formed in the inner walls of the two sides of the bin, and the two sides of the installation frame are connected in the two sliding grooves in a sliding mode respectively.

By adopting the technical scheme, the lower sieve plate is installed through the installation frame; when the aggregate required by the building is different in size, the mounting frame is driven to move by driving the transmission assembly, so that the lower sieve plate is driven to move, the size of the overlapped aperture of the lower sieve hole on the lower sieve plate and the upper sieve hole on the upper sieve plate is adjusted, and the size of aggregate particles entering the aggregate bin is controlled; the size of the sieve mesh is adjusted, aggregate is placed into the bin through the feeding hole, and after the aggregate passes through the sieve mesh, the discharge door is opened to discharge the aggregate. Therefore, the utility model discloses can change the aperture of filter sieve, have and select the advantage that accords with the required aggregate of building according to the size requirement of different buildings to the aggregate.

The utility model discloses further set up to: the mounting groove has been seted up to the lateral wall of feed bin, drive assembly is including setting up the gear in the mounting groove and setting up in the rack of installing frame lower surface, the gear with rack toothing, the axle center of gear is provided with the axis of rotation, the one end of axis of rotation rotate connect in tank bottom, the other end of mounting groove extend to the outside of mounting groove.

By adopting the technical scheme, the transmission assembly is installed through the installation groove; the gear is driven to rotate through rotation of the rotating shaft, and then the mounting frame is driven to slide in the sliding groove through transmission between the gear and the rack, so that the size of the overlapping aperture of the lower sieve mesh on the lower sieve plate and the upper sieve mesh on the upper sieve plate is adjusted through movement of the lower sieve plate.

The utility model discloses further set up to: the feed bin in the notch department of mounting groove is provided with and is used for sealing the installation riser of mounting groove, the rotation hole has been seted up to the installation riser, the axis of rotation is rotated and is connected in rotating downtheholely, just the axis of rotation is kept away from the one end of mounting groove is provided with the crank.

By adopting the technical scheme, the mounting groove is sealed by mounting the vertical plate, so that sundries are prevented from entering and blocking the gear; the rotating shaft is convenient to rotate on the outer side of the storage bin through the handle.

The utility model discloses further set up to: lower sieve board sets up to two, be provided with fixed horizontal pole in the installing frame, two the sieve is located down the sieve is located the both sides of fixed horizontal pole, the sieve mesh has been seted up down on the sieve down, when the sieve board is in the horizontality down the one end of sieve articulate in on the fixed horizontal pole, the other end laminating in the inside wall of installing frame, when the sieve board is in the non-horizontality down the inner wall of sieve and installing frame forms first discharge gate, first discharge gate is located the top of bin outlet.

Through adopting above-mentioned technical scheme, realize the articulated to two lower sieve through fixed horizontal pole, the lower sieve uses fixed horizontal pole as the center to rotate, and two lower sieve and the inner wall of installing frame form two first discharge gates, the aggregate that can not pass through lower sieve in the downside of first discharge gate to lower sieve, finally through in the bin outlet discharge feed bin.

The utility model discloses further set up to: and the hopper is provided with an adjusting component for adjusting the angle of the lower sieve plate.

Through adopting above-mentioned technical scheme, through adjusting part, adjust the angle between the lower sieve board to make lower sieve board and installing frame inner wall be in laminating or separation two kinds of states.

The utility model discloses further set up to: the adjusting part comprises an adjusting cylinder used for adjusting the angle of the lower sieve plate, a telescopic rod arranged in the cylinder and two connecting rods arranged between the lower sieve plate and the telescopic rod, wherein the connecting rods are respectively connected to the two lower sieve plates, and one end of each connecting rod is rotatably connected to the lower surface of each lower sieve plate and the other end of each lower sieve plate and is rotatably connected to the upper end of the corresponding telescopic rod.

Through adopting above-mentioned technical scheme, drive the telescopic link through adjust cylinder and remove, the telescopic link drives the connecting rod and removes, and then drives down the sieve board and remove to the effect that sieve was realized in the laminating state to sieve and installing frame inner wall under the messenger, perhaps sieve and installing frame inner wall are in the first discharge gate of separation state formation down.

The utility model discloses further set up to: go up the sieve board and set up to two, be provided with the installation horizontal pole in the feed bin, two go up the sieve and be located the both sides of installation horizontal pole, the installation horizontal pole with fixed horizontal pole parallel arrangement, just go up the lower surface butt of sieve in the upper surface of sieve down, go up and seted up the sieve mesh on the sieve, when the sieve is in the horizontality the one end of going up the sieve articulate in on the installation horizontal pole, the other end laminate in the inside wall of feed bin, two go up the sieve board and form two second discharge gates with the inner wall of feed bin respectively, the second discharge gate is linked together with first discharge gate.

Through adopting above-mentioned technical scheme, realize the articulated to two upper screen plates through the installation horizontal pole, the inner wall that upper screen plate uses the installation horizontal pole to rotate as the center, and two upper screen plates and feed bin forms two second discharge gates, and the aggregate that can not pass through upper screen plate is in second discharge gate and first discharge gate downside to the lower screen plate, finally discharges in the feed bin through the bin outlet.

The utility model discloses further set up to: the lower sieve plate is characterized in that an upper groove is formed in the lower surface of the upper sieve plate, a lower groove is formed in the upper surface of the lower sieve plate, the upper groove is located above the lower groove, an elastic piece is installed between the upper groove and the lower groove, one end of the elastic piece is arranged on the upper sieve plate, and the other end of the elastic piece is arranged on the lower sieve plate.

By adopting the technical scheme, the elastic piece is installed through the upper groove and the lower groove, the upper sieve plate is connected with the lower sieve plate through the elastic piece, and the lower sieve plate moves downwards under the driving of the adjusting cylinder so as to drive the upper sieve plate to move downwards; when lower sieve slided under the drive of installing frame, and do not hinder the removal of sieve down through the elastic component.

The utility model discloses further set up to: the aggregate bin is characterized in that a protection plate used for preventing the aggregate from colliding with the installation cross rod is arranged in the bin, the cross section of the protection plate is arranged in an inverted V shape, and the protection plate is arranged in parallel with the installation cross rod.

Through adopting above-mentioned technical scheme, when the aggregate entered into the feed bin, at the in-process that falls, protect the installation horizontal pole through the protection shield, prevent the collision between aggregate and the installation horizontal pole.

The utility model discloses further set up to: the bin gate comprises two bin gates, and a door opening cylinder is arranged between the bin and the bin gates and is positioned on the outer side of the bin.

Through adopting above-mentioned technical scheme, realize the control to the bin gate through the cylinder that opens the door to be in and open or close two kinds of states with the bin gate.

To sum up, the utility model discloses following beneficial effect has: the lower sieve plate is installed through the installation frame; when the aggregate required by the building is different in size, the mounting frame is driven to move by driving the transmission assembly, so that the lower sieve plate is driven to move, the size of the overlapped aperture of the lower sieve hole on the lower sieve plate and the upper sieve hole on the upper sieve plate is adjusted, and the size of aggregate particles entering the aggregate bin is controlled; the size of the sieve mesh is adjusted, aggregate is placed into the bin through the feeding hole, and after the aggregate passes through the sieve mesh, the discharge door is opened to discharge the aggregate. Therefore, the utility model discloses can change the aperture of filter sieve, have and select the advantage that accords with the required aggregate of building according to the size requirement of different buildings to the aggregate.

Drawings

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

fig. 2 is a side view of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged partial view of section C of FIG. 3;

FIG. 5 is a schematic structural view of the transmission assembly and the mounting frame of the present invention;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 7 is a partially enlarged schematic view of a portion D in fig. 5.

In the figure: 1. a storage bin; 11. a feeding section; 111. installing a cross bar; 112. a sliding groove; 113. a protection plate; 114. an observation window; 115. mounting grooves; 116. installing a vertical plate; 117. a limiting block; 12. a discharging section; 121. a connecting plate; 1211. a door opening cylinder; 122. a side plate; 2. a discharge gate; 21. enclosing plates; 22. a base plate; 3. an upper sieve plate; 31. an upper groove; 4. a movable sieve plate mechanism; 41. installing a frame; 411. fixing the cross bar; 42. a lower sieve plate; 421. a lower groove; 43. a transmission assembly; 431. a rack; 432. a gear; 433. a rotating shaft; 4331. c, shaking the hand; 5. a compression spring; 6. an adjustment assembly; 61. an adjusting cylinder; 62. a telescopic rod; 63. a connecting rod; 7. and (4) a bracket.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses a mixing plant aggregate bin, which comprises a bin 1. The outer side of the storage bin 1 is provided with a bracket 7.

The storage bin 1 comprises a feeding section 11 and a discharging section 12 which are fixed with each other, hollow and communicated up and down. The cross section of the feeding section 11 is rectangular, a mounting opening is formed in the side wall of the feeding section 11, and an observation window 114 is arranged at the mounting opening of the feeding section 11; the upper end of the feeding section 11 is a feeding hole. The discharging section 12 comprises two vertically arranged side plates 122 and two obliquely arranged connecting plates 121, and the connecting plates 121 are obliquely arranged from the upper end to the lower end to the inside of the storage bin 1.

The lower end of the discharging section 12 is a discharge hole, and the bin 1 is provided with two discharge doors 2 at the discharge hole. The two discharging doors 2 are respectively located at two sides of the discharging opening, and the connecting plate 121 is rotatably connected with two door-opening cylinders 1211 which respectively drive the two discharging doors 2 to open and close. The discharge door 2 comprises two enclosing plates 21 which are vertically arranged and are rotationally connected with the outer wall of the discharge section 12 and a bottom plate 22 which is arranged corresponding to the discharge opening. The two enclosing plates 21 are respectively connected on the two side plates 122 in a rotating way, and the cross section of each side plate 122 is in a fan shape. The bottom plate 22 is a circular arc surface, and when the two discharge doors 2 are closed, the heights of the two sides of the bottom plate 22 are greater than the height of the middle part of the bottom plate 22; the in-process that the bin gate 2 was closed, the aggregate that drops on to bottom plate 22 can move to the lowest of bottom plate 22 for the aggregate no longer continues to fall, and bottom plate 22 catches the aggregate and realizes closing of discharge gate, reduces the aggregate and continues to fall and block the possibility of bin gate 2 when bin gate 2 is closed. The output end of the door-opening cylinder 1211 is rotatably connected to the bottom plate 22, and the other end thereof is rotatably connected to the connecting plate 121.

Referring to fig. 2, 3 and 4, two upper sieve plates are installed in the feeding section 11, and upper sieve holes are opened on the upper sieve plate 3. An installation cross rod 111 is fixedly arranged in the feeding section 11, two ends of the installation cross rod 111 are fixedly arranged on the inner wall of the feeding section 11, and the two upper sieve plates 3 are positioned on two sides of the installation cross rod 111; when the two upper sieve plates 3 are in a horizontal state, one side of each upper sieve plate 3 is hinged with the mounting cross rod 111, and the other side of each upper sieve plate 3 abuts against the inner wall attached to the feeding section 11; when the two upper sieve plates 3 rotate downwards, the two upper sieve plates 3 and the inner wall of the feeding section 11 can form two second discharge holes respectively. When the two discharge doors 2 are in an open state, one end of the bottom plate 22 is located right below the first discharge port, and the aggregates fall from the discharge port. A protective plate 113 for preventing the aggregate from colliding with the installation cross rod 111 is arranged in the feeding section 11, and two ends of the protective plate 113 are fixedly arranged on the inner walls of two sides of the feeding section 11; the cross section of the protection plate 113 is arranged in an inverted V shape; the protection plate 113 is located directly above the installation rail 111, and the protection plate 113 is disposed parallel to the installation rail 111. Two limiting blocks 117 are arranged in the feeding section 11, the two limiting blocks 117 are respectively positioned right above the two upper sieve plates 3, and when the upper sieve plates 3 are in a horizontal state, the lower surfaces of the limiting blocks 117 abut against the upper surfaces of the upper sieve plates 3.

A movable sieve plate mechanism 4 is arranged in the feeding section 11, and the movable sieve plate mechanism 4 is positioned at the lower end of the upper sieve plate.

The moving screen deck mechanism 4 comprises a mounting frame 41, two lower screen decks 42 and a transmission assembly 43. The both sides inner wall of feeding section 11 has been seted up and has all been seted up sliding groove 112, and two sliding groove 112 set up relatively, and the both sides of installing frame 41 slide respectively and connect in two sliding groove 112.

As shown in fig. 3, 4 and 5, the transmission assembly 43 includes a gear 432, a rack 431 and a rotating shaft 433. The outer side wall of the feeding section 11 is provided with a mounting groove 115, the mounting groove 115 is communicated with a sliding groove 112, the rack 431 is integrally formed at one end of the lower surface of the mounting frame 41, and the rack 431 is located in the mounting groove 115. The rotating shaft 433 is located at the axial center of the gear 432, the gear 432 is keyed with the rotating shaft 433, and the rack 431 is meshed with the gear 432. The section of feeding 11 has set firmly in the notch department of mounting groove 115 and is used for sealed mounting groove 115 notch installation riser 116, has seted up the rotation hole on the installation riser 116, and the one end of axis of rotation 433 is rotated and is connected in the tank bottom of mounting groove 115, the other end and rotates and connect in the mounting hole and extend to the outside of mounting groove 115, and the one end that gear 432 was kept away from to axis of rotation 433 is provided with the hand crank 4331.

As shown in fig. 6 and 7, the lower sieve plate 42 is provided with lower sieve holes; a fixed cross bar 411 is arranged in the mounting frame 41, and the two lower sieve plates 42 are respectively positioned at two sides of the fixed cross bar 411; when the two lower screen plates 42 are in a horizontal state, one side of each lower screen plate 42 is hinged to the fixed cross rod 411, and the other side end of each lower screen plate 42 is attached to the inner side wall of the mounting frame 41; when the two lower sieve plates 42 rotate downwards, the two lower sieve plates 42 respectively form two first discharge ports with the inner wall of the mounting frame 41, and the first discharge ports are communicated with the second discharge ports. The upper surface of the lower sieve plate 42 is attached to the lower surface of the upper sieve plate 3; two upper grooves 31 are formed in the lower surface of the upper screen plate 3, and the two upper grooves 31 are located at two corners of the upper screen plate 3 away from the fixed cross bar 411; the upper surface of the lower sieve plate 42 is provided with two lower grooves 421, and the two lower grooves 421 are located at two corners of the lower sieve plate 42 away from the fixed cross bar 411; the upper groove 31 is located above the lower groove 421, an elastic member is installed between the upper groove 31 and the lower groove 421, the elastic member is a compression spring 5, one end of the compression spring 5 is fixedly arranged on the upper screen plate 3 in the upper groove 31, and the other end of the compression spring is fixedly arranged on the lower screen plate 42 in the lower groove 421.

The lower extreme of installing frame 41 is provided with two sets of adjusting part 6 that are used for adjusting lower sieve 42 angle, and two sets of adjusting part 6 set up respectively on two curb plates 122.

The adjusting assembly 6 comprises an adjusting cylinder 61, an expansion rod 62 and two connecting rods 63. The adjusting cylinder 61 is vertically and fixedly arranged on the side plate 122, and the adjusting cylinder 61 is positioned right below the fixed cross rod 411. The expansion link 62 is provided in the adjustment cylinder 61, and the expansion link 62 expands and contracts in the length direction of the adjustment cylinder 61. Two connecting rods 63 are respectively connected to the two lower sieve plates 42 in a rotating manner, one end of each connecting rod 63 is connected to the lower surface of the lower sieve plate 42 in a rotating manner, and the other end of each connecting rod 63 is connected to the upper end of the telescopic rod 62 in a rotating manner. The adjusting cylinder 61 drives the telescopic rod 62 to move up and down, and the telescopic rod 62 drives the connecting rod 63 to move so as to drive the lower sieve plate 42 to rotate with the fixed cross rod 411.

The implementation principle of the embodiment is as follows: when the aggregate required by the building is different in size, the driving transmission assembly 43 is used for driving the mounting frame 41 to move, and further driving the lower sieve plate 42 to move, so that the size of the overlapping aperture of the lower sieve hole on the lower sieve plate 42 and the upper sieve hole on the upper sieve plate 3 is adjusted, and the size of aggregate particles entering the aggregate bin 1 is controlled; adjusting the size of the sieve pores, putting the aggregates into the bin 1 through the feeding hole, and after the aggregates pass through the sieve pores, opening the discharge door 2 to discharge the aggregates; for the aggregates with the diameter larger than the aperture of the sieve pores, the lower sieve plate 42 is driven to rotate downwards through the adjusting cylinder 61, the upper sieve plate 3 is driven to rotate downwards, the first discharge port and the second discharge port are opened, and the rest aggregates are discharged out of the bin 1.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A mixing station aggregate bin comprises a bin (1), wherein a feed inlet and a discharge outlet are respectively formed in the upper end and the lower end of the bin (1), and a discharge gate (2) is arranged at the discharge outlet of the bin (1), and is characterized in that an upper sieve plate (3) is arranged in the bin (1), an upper sieve mesh is formed in the upper sieve plate (3), a movable sieve plate mechanism (4) is arranged in the bin (1), and the movable sieve plate mechanism (4) is positioned at the lower end of the upper sieve plate (3);

activity sieve mechanism (4) are including setting up installing frame (41) in feed bin (1), installing lower sieve (42) in installing frame (41) and establishing transmission assembly (43) that are used for driving installing frame (41) to slide, sieve mesh has been seted up down in lower sieve (42), sliding groove (112), two have all been seted up to the both sides inner wall of feed bin (1) sliding groove (112) set up relatively, the both sides of installing frame (41) slide respectively and connect in two sliding groove (112).

2. The mixing station aggregate bin of claim 1, wherein a mounting groove (115) is formed in the outer side wall of the bin (1), the transmission assembly (43) comprises a gear (432) arranged in the mounting groove (115) and a rack (431) arranged on the lower surface of a mounting frame (41), the gear (432) is meshed with the rack (431), a rotating shaft (433) is arranged at the axis of the gear (432), one end of the rotating shaft (433) is rotatably connected to the bottom of the mounting groove (115), and the other end of the rotating shaft extends to the outer side of the mounting groove (115).

3. The mixing station aggregate bin of claim 2, wherein the bin (1) is provided with an installation riser (116) for sealing the installation groove (115) at the notch of the installation groove (115), the installation riser (116) is provided with a rotation hole, the rotation shaft (433) is rotatably connected in the rotation hole, and a handle (4331) is arranged at one end of the rotation shaft (433) far away from the installation groove (115).

4. The aggregate bin of the mixing plant according to claim 1, wherein the number of the lower screen plates (42) is two, the mounting frame (41) is internally provided with a fixed cross bar (411), the two lower screen plates (42) are positioned on two sides of the fixed cross bar (411), when the lower screen plates (42) are in a horizontal state, one ends of the lower screen plates (42) are hinged on the fixed cross bar (411), the other ends of the lower screen plates are attached to the inner side wall of the mounting frame (41), when the lower screen plates (42) are in a non-horizontal state, the inner walls of the lower screen plates (42) and the mounting frame (41) form a first discharge port, and the first discharge port is positioned above the discharge port.

5. A mixing station aggregate bin according to claim 4, characterized in that the bin (1) is provided with an adjustment assembly (6) for adjusting the angle of the lower screen deck (42).

6. The aggregate bin of the mixing station as claimed in claim 5, wherein the adjusting assembly (6) comprises an adjusting cylinder (61) for adjusting the angle of the lower screen plate, an expansion rod (62) arranged in the cylinder, and two connecting rods (63) arranged between the lower screen plate (42) and the expansion rod (62), wherein the two connecting rods (63) are respectively connected to the two lower screen plates (42), one end of each connecting rod (63) is rotatably connected to the lower surface of the lower screen plate (42), and the other end of each connecting rod (63) is rotatably connected to the upper end of the expansion rod (62).

7. The aggregate bin of the mixing plant according to claim 4, wherein the number of the upper screen plates (3) is two, the bin (1) is internally provided with an installation cross rod (111), the number of the upper screen plates (3) is two, the installation cross rod (111) and the fixed cross rod (411) are arranged in parallel, the lower surface of each upper screen plate (3) abuts against the upper surface of the lower screen plate (42), one end of each upper screen plate (3) is hinged to the inner side wall of the corresponding bin (1) at the upper end and the other end of each upper screen plate (3) when the upper screen plates (3) are in a horizontal state, the inner walls of the upper screen plates (3) and the bin (1) form a second discharge port when the upper screen plates (3) are in a non-horizontal state, and the second discharge port is communicated with the first discharge port.

8. The aggregate bin of the mixing station as recited in claim 7, wherein an upper groove (31) is formed in a lower surface of the upper screen plate (3), a lower groove (421) is formed in an upper surface of the lower screen plate (42), the upper groove (31) is located above the lower groove (421), an elastic member is installed between the upper groove (31) and the lower groove (421), one end of the elastic member is disposed on the upper screen plate (3), and the other end of the elastic member is disposed on the lower screen plate (42).

9. The mixing station aggregate bin as claimed in claim 7, wherein a protection plate (113) for preventing the aggregates from colliding with the installation cross bar (111) is arranged in the bin (1), the cross section of the protection plate (113) is arranged in an inverted V shape, and the protection plate (113) is arranged in parallel with the installation cross bar (111).

10. The mixing station aggregate silo according to claim 1, characterized in that the discharge gate (2) is provided in two, and a door-opening cylinder (1211) is arranged between the silo (1) and the discharge gate (2), wherein the door-opening cylinder (1211) is located outside the silo (1).