CN202985790U - Material adding system and building material preparation equipment comprising same - Google Patents

Material adding system and building material preparation equipment comprising same Download PDF

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Publication number
CN202985790U
CN202985790U CN 201220739697 CN201220739697U CN202985790U CN 202985790 U CN202985790 U CN 202985790U CN 201220739697 CN201220739697 CN 201220739697 CN 201220739697 U CN201220739697 U CN 201220739697U CN 202985790 U CN202985790 U CN 202985790U
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China
Prior art keywords
discharging opening
feed bin
additive
section
side wall
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Expired - Lifetime
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CN 201220739697
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Chinese (zh)
Inventor
李跃萍
员健
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Priority to CN 201220739697 priority Critical patent/CN202985790U/en
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Abstract

The utility model provides an add material system and including building material preparation equipment of this system. Wherein, the addition material system includes: the stacking device is provided with a first discharge port which can be opened and closed, and selectively conveys materials through the opening and closing state of the first discharge port; the conveying device conveys and unloads the materials into the stacking device; the storage bin receives and conveys materials from the stacking device; and a material transporting device that receives material from the silo and transports the material to a material receiving location. The utility model discloses saved the process of the secondary fortune material of load wagon, the process is simple, and is with low costs, and has reduced the pollution of the in-process of unloading.

Description

Additive system and comprise the construction material Preparation equipment of this system
Technical field
The utility model relates to technical field of engineering machinery, in particular to a kind of additive system and comprise the construction material Preparation equipment of this system.
Background technology
In recent years, the increasing of infrastructure construction has promoted the development of construction material, as pitch, concrete, dry-mixed mortar etc.Take pitch as example, the develop rapidly of bituminous paving, to logistics and people go out the long journey bring great convenience, also greatly alleviated domestic communications and transportation pressure.By asphalt mixing plant, the cold aggregate of different-grain diameter is admixed with filler ratio in accordance with regulations in prior art and be in the same place, make binder with pitch, mix and stir into uniform compound at the temperature of regulation, to carry out the laying on road surface.
Wherein, the process of cold aggregate filling refers to cold aggregate is added in the feed bin of asphalt mixing plant aggregate supply system.The cold aggregate filling method of generally taking in industry at present is: transport vehicle is transported to the cold aggregate of all size in the stock ground of asphalt mixing plant mix field from broken of cold aggregate, by different specification subregion stackings, deliver to load wagon in the feed bin of asphalt mixing plant and prepare burden, load wagon must have two~three load wagons that cold aggregate is delivered in feed bin, for convenience of the load wagon filling, the feed bin front end needs a bank protection or the stock ground equals or the feed hole edges of a little higher than feed bin, and the feed bin of aggregate supply system is generally the disjunctor form; By belt conveyor, cold aggregate is delivered to again and carried out next step operation in drying roller.
Adopt above-mentioned filling method, have following shortcoming:
Transport vehicle is delivered to cold aggregate and is stacked a discharging once, and load wagon is added into feed bin place's discharging once with cold aggregate, and the airborne dust during discharging has twice, and is very large to the pollution of environment;
Cost is higher, need a bank protection or the stock ground equals or the feed hole edges of a little higher than feed bin as the feed bin front end, this need to drop into the civil engineering expense, need to drop into the cost of two to three load wagons early stage, be equipped with four to six load wagon operation drivers, the oil consumption of load wagon, oily rate use, the loss of equipment, maintenance cost, labor wage etc. all need larger expense;
Need use burning diesel oil with load wagon, the tail gas of discharging has pollution to environment;
The stockpile of all size is arbitrarily stacked and is easy to batch mixing, and floor space is large etc.
The utility model content
The utility model aims to provide a kind of construction material Preparation equipment that need not the additive system of load wagon secondary haul and comprise this system.
To achieve these goals, according to an aspect of the present utility model, provide a kind of additive system, having comprised: material stocking device, be provided with the first discharging opening to be opened/closed, the open and-shut mode of material stocking device by the first discharging opening be convey materials optionally; Conveying arrangement, with material transportation and discharging to material stocking device; Feed bin receives and transports the material from material stocking device; And conveying device, receive from the material of feed bin and with material transportation to the material receiving position.
Further, the first discharging opening is arranged at the bottom of material stocking device, and feed bin is provided with the charging aperture that is communicated with the first discharging opening, and charging aperture is arranged at the below of the first discharging opening.
Further, material stocking device comprises the midfeather between the first end of the first side wall and the second sidewall that is oppositely arranged, the first end that is connected to the first side wall and the second sidewall, and diapire, the first discharging opening is arranged on midfeather, diapire comprises the first diapire section and near the second diapire section of the first discharging opening, and the second diapire section has the charge bank that unloads that is increasing highly gradually on away from the direction of the first discharging opening.
Further, the first side wall comprises the first side wall section that is connected with the second diapire section, and the second sidewall comprises the second side wall sections that is connected with the second diapire section, and the first side wall section and the second side wall sections are extended on the direction of the first discharging opening close to each other on the edge.
Further, the angle that unloads charge bank and horizontal plane is α, wherein 50 °≤α<70 °.
Further, the outer setting of the first discharging opening has material guide device.
Further, material guide device is deflector chute, and deflector chute comprises first paragraph and the second segment that is oppositely arranged, and two ends connect respectively the end section of the lower end of the lower end of first paragraph and second segment.
Further, end section increases gradually along the direction width near feed bin, and the width of the charging aperture of feed bin is greater than the width of the section outer end, the end of deflector chute.
Further, the outer setting of the first discharging opening has door to be opened/closed, and the first discharging opening is by door setting to be opened/closed.
Further, a plurality of material stocking devices are arranged in order, and isolate by spacer assembly between every adjacent two material stocking devices, and each material stocking device all has the first discharging opening, being provided with that feed bin is corresponding with material stocking device is a plurality of, and each feed bin is provided with the charging aperture that is communicated with corresponding the first discharging opening.
Further, spacer assembly comprises divider wall, and divider wall comprises the first side and second side of opposing setting, and the first side forms the first side wall of one of them adjacent material stocking device, and the second side forms the second sidewall of another material stocking device.
Further, the longitudinal section of the part corresponding with the second diapire section of divider wall is taper.
Further, each feed bin also is provided with the second discharging opening, and the additive system comprises that also being arranged on being used between each second discharging opening and conveying device carries out the just proportioner of gradating material to the material of every kind of specification.
Further, proportioner is arranged at the below of the second discharging opening of each feed bin, picks and convey materials.
Further, conveying device comprises belt drive unit, belt drive unit comprises feeding belt device and charging belt device, wherein, feeding belt device is arranged at the below of each proportioner, receive and convey materials, charging belt device one end is arranged at the below of the discharge end of feeding belt device, and the other end is towards the material receiving position of material.
Further, the quantity of feeding belt device is a plurality of, and a plurality of feeding belt devices are connected in series successively.
According on the other hand of the present utility model, a kind of construction material Preparation equipment is provided, comprise the additive system, wherein, the additive system is above-mentioned additive system.
additive system of the present utility model and comprise the construction material Preparation equipment of this system, by material stocking device is set, and the first discharging opening of material stocking device is communicated with feed bin, when adopting the utility model to carry out cold aggregate additive process, only need by transport vehicle, cold aggregate to be transported to material stocking device, the first discharging opening is opened during to the feed bin charging when needs, cold aggregate is because Action of Gravity Field can enter in feed bin automatically, thereby realize further the additive process of cold aggregate, the utility model has saved the process of the secondary haul of load wagon, operation is simple, cost is low, and reduced the pollution in the discharge process.
Description of drawings
The Figure of description that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation according to the additive system of an embodiment of the present utility model;
Fig. 2 shows the structural representation according to the additive system of another embodiment of the present utility model;
Fig. 3 a shows the structural representation of door in first embodiment in the utility model;
Fig. 3 b shows the structural representation of second embodiment of door in the utility model; And
Fig. 3 c shows the structural representation of the 3rd embodiment of door in the utility model.
The specific embodiment
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
As shown in Figure 1, the additive system of the present embodiment comprises material stocking device 8, transport vehicle 7, feed bin 6 and conveying device with material (as cold aggregate) transportation and discharging to the material stocking device 8.Wherein, material stocking device 8 is provided with the first discharging opening 841, and material stocking device 8 is provided with the first discharging opening 841 to be opened/closed, and preferably, the first discharging opening 841 is by realizing its function to be opened/closed at its outer setting door 4 to be opened/closed; Feed bin 6 has charging aperture 61 and the second discharging opening 62, and the charging aperture 61 of feed bin 6 is communicated with the first discharging opening 841 of material stocking device 8, receives the material from the first discharging opening 841; Conveying device receive from the material of the second discharging opening 62 of feed bin 6 and with mass transport to the material receiving position.Preferably, the first discharging opening 841 is arranged at the bottom of material stocking device 8, the below that is arranged at the first discharging opening 841 that the charging aperture 61 of feed bin 6 is corresponding.
the additive system of the present embodiment, by material stocking device 8 is set, and the first discharging opening 841 of material stocking device 8 is communicated with feed bin 6, when adopting the additive system of the present embodiment to carry out cold aggregate additive process, only need by transport vehicle 7, cold aggregate to be transported to material stocking device 8, door 4 on the first discharging opening 841 is opened when need to be to feed bin 6 charging, cold aggregate is because Action of Gravity Field can enter in feed bin 6 automatically, thereby realize further the additive process of cold aggregate, the present embodiment has saved the process of the secondary haul of load wagon 9, operation is simple, cost is low, and reduced the pollution in the discharge process.
as a kind of preferred version, the material stocking device 8 of the present embodiment comprises the first side wall 82 and the second sidewall 83 that is oppositely arranged, be connected to the midfeather 84 between the first end of the first end of the first side wall 82 and the second sidewall 83, and diapire 81, the first discharging opening 841 is arranged on midfeather 84, diapire 81 comprises the first diapire section 811 and the second diapire section 812, the first diapire section 811 is horizontal plane, the second diapire section 812 has the charge bank that unloads that is increasing highly gradually on away from the direction of the first discharging opening 841, preferably, the angle that unloads charge bank and horizontal plane is α, α 〉=50 °, preferably, 50 °≤α<70 °, with facilitate cold aggregate in material stocking device 8 from the first discharging opening 841 landings to feed bin 6.For the discharging of convenient cold aggregate further, the first side wall 82 in the present embodiment comprises the first side wall section that is connected with the second diapire section 812, the second sidewall 83 comprises the second side wall sections that is connected with the second diapire section 812, and the first side wall section and the second side wall sections are extended on the direction of the first discharging opening 841 close to each other on the edge.Preferably, the first side wall 82 in the present embodiment also comprises the 3rd side wall sections that is connected with the first diapire section 811, and the second sidewall 83 also comprises the 4th side wall sections that is connected with the first diapire section 811.Preferably, the 3rd side wall sections and the 4th side wall sections arrange in parallel to each other.
As a kind of preferred version, in the additive system of the present embodiment, the outer setting of the first discharging opening 841 has material guide device, flash to prevent cold aggregate cold aggregate when the first discharging opening 841 discharging, and the waste material, and prevent further pollution to environment.Preferably, material guide device is deflector chute 3, and deflector chute 3 comprises first paragraph and the second segment that is oppositely arranged, and two ends connect respectively the end section of the lower end of the lower end of first paragraph and second segment.For the speed that increases discharging and the uniformity of discharging, the end section of deflector chute 3 increases gradually along the direction width near feed bin 6, and the width of the charging aperture 61 of feed bin 6 is greater than the width of the end section of deflector chute 3.
In additive system as an embodiment of the present utility model, material stocking device 8 is a plurality of, as 5 but be not limited to 5, in order to hold the cold aggregate of different size, a plurality of material stocking devices 8 are arranged in order, between every adjacent two material stocking devices 8, by spacer assembly (as the first side wall 82) isolation, each material stocking device 8 all has the first discharging opening 841, and each first discharging opening 841 all is communicated with the charging aperture 61 of a feed bin 6 accordingly.Wherein, spacer assembly preferably includes divider wall, and divider wall comprises the first side and second side of opposing setting, and the first side wall 82, the second sides that the first side forms one of them adjacent material stocking device 8 form the second sidewall 83 of another material stocking device 8.And preferably, the longitudinal section of the part corresponding with the second diapire section 812 of divider wall is taper, and arranges close to each other along the direction towards the first discharging opening 841, with the automatic discharging of convenient cold aggregate.The additive system of the present embodiment also comprise be arranged on being used between each second discharging opening 62 and conveying device the material of every kind of specification carried out just proportioner 5(such as the proportioning belt conveyer of gradating material), proportioner 5 has discharging opening.Conveying device comprises belt drive system, belt drive system comprises feeding belt device (as the feeding belt conveyer) and charging belt device 1(such as material loading belt conveyor), wherein, proportioner 5 is arranged at the below of the discharging opening of each feed bin 6, and feeding belt device is arranged at the below of the discharging opening of proportioner 5, receive and transport cold aggregate, charging belt device 1 one ends are placed in the below of the discharge end of feeding belt device, and the other end is towards the material receiving position of material.In a plurality of feed bins 6 in the present embodiment, can adopt each feed bin 6 equal compartment of terrain setting as shown in Figure 1, also can adopt some adjacent a plurality of feed bin as shown in Figure 2 to arrange successively with connecting, with the material of saving feed bin 6, and then save cost.
the present embodiment in use, transport vehicle 7 is transported to cold aggregate the mix field of asphalt mixing plant from the broken field of cold aggregate, and directly cold aggregate is transported and is added in the material stocking device 8 of dimension, when needs during to feed bin 6 discharging, open door 4, cold aggregate is because the Action of Gravity Field of himself automatically is dumped into feed bin 6 from the first discharging opening 841, cold aggregate in feed bin 6 is discharged from the second discharging opening 62, drop down onto the proportioner of feed bin 6 belows, then proportioner 5 is delivered to feeding belt device, cold aggregate is delivered to charging belt device 1 through feeding belt device, and then be sent to the material receiving position.The present embodiment need not 9 pairs of cold aggregates of load wagon and carries out the secondary discharging, has simplified operation, has reduced the pollution to environment, reduced cost, and in the cold aggregate stacking process of all size, the batch mixing phenomenon can not occur due to spacer assembly being arranged, floor space is little, and environment is cleaner and tidier.
Cold aggregate from the second discharging opening 62 dischargings to proportioner, owing to having the material flow detection device on proportioner, the material of every kind of specification is carried out be provided with proportioner 5 between the second discharging opening 62 of each feed bin 6 and conveying device in the additive system of first gradating material the present embodiment.Preferably, proportioner 5 comprises the proportioning belt conveyer.The present embodiment first falls into during from the second discharging opening 62 discharging when cold aggregate in the proportioning belt conveyer of the second discharging opening 62 belows in use, then falls on the belt of feeding belt device from the belt conveyor of preparing burden.
Because the quantity of feed bin 6 is a plurality of, and be preferably more than 5,, need through long distance after feed bin 6 dischargings far away apart from charging belt device 1 when cold aggregate, the feeding belt conveyer is in the process of carrying cold aggregate, the transmission power that consumes is larger, the length of feeding belt device is longer, and the accuracy of manufacture is low, and service life is short, feeding belt device is fragile, and reduce service life.In order to reduce the transmission power of feeding belt device, improve service life, the quantity of the feeding belt device in the present embodiment is a plurality of, a plurality of feeding belt devices are connected in series successively, in the present embodiment often the below of two or three feed bins 6 feeding belt device is set, and each feeding belt device is connected successively and then is connected to charging belt device 1.
As a specific embodiment, as depicted in figs. 1 and 2, the quantity of feed bin 6 is 5, feeding belt device comprises the first feeding belt conveyer 21 and the second feeding belt conveyer 22 that series connection arranges, wherein, the first feeding belt conveyer 21 is arranged at the below of three feed bins 6 in the left side as shown in Figure 1, the second feeding belt conveyer 22 is arranged at the below of two feed bins 6 in the right as shown in Figure 1, an end near the second feeding belt conveyer 22 of the first feeding belt conveyer 21 is positioned at the upper end of the second feeding belt conveyer 22, to facilitate the transportation of material.adopt the additive system of the present embodiment, in some embodiment, the power output that only adopts a larger feeding belt machine is 22kw, and adopt in the feeding belt device of mode of two feeding belt machines series connection, the power output of two feeding belt conveyers is not more than respectively 7.5kw and 5kw, the summation of the power output of two feeding belt conveyers is much smaller than the power output of only using a feeding belt machine, requirement to the rigidity of belt when therefore adopting a plurality of feeding belt conveyer series system reduces, extended the service life of feeding belt conveyer.
As a kind of preferred version, the additive system of the present embodiment, door 4 handles 41 that comprise body 42 and be connected to body 42 upper ends, the upper end of handle 41 preferably is hinged on the midfeather 84 of material stocking device 8.Handle 41 can be for a plurality of, and as shown in Fig. 3 a and Fig. 3 b, handle is two, and wherein, the shape of the body 42 of door 4 can be designed as the rectangle as shown in Fig. 3 a, also can be designed as the rectangle as shown in Fig. 3 b and Fig. 3 c, or other shape.
The present embodiment preferably also comprises load wagon 9, when the cold aggregate negligible amounts in material stocking device 8 or positional distance unload charge bank when far away, utilize load wagon 9 with cold aggregate to pushing away near the direction of the first discharging opening 841, until be pushed into cold aggregate voluntarily landing get final product.
Additive of the present utility model system preferably selects the place of the discrepancy in elevation to build, and preferably difference in height is the place more than 8 meters, as hills, mountain area etc.Additive of the present utility model system can also set up the auxiliary equipment such as rain shade.
The utility model also provides a kind of construction material Preparation equipment, comprises the additive system, and wherein, the additive system is above-mentioned additive system.Preferably, the construction material Preparation equipment comprises concrete Preparation equipment, pitch Preparation equipment, dry-mixed mortar Preparation equipment.
from above description, can find out, additive system of the present utility model and comprise the construction material Preparation equipment of this system, by material stocking device 8 is set, and the first discharging opening 841 of material stocking device 8 is communicated with feed bin 6, when adopting additive of the present utility model system to carry out cold aggregate additive process, only need by transport vehicle 7, cold aggregate directly to be transported to material stocking device 8 from broken of cold aggregate, the first discharging opening 841 is opened during to feed bin 6 charging when needs, cold aggregate is because Action of Gravity Field can enter in feed bin 6 automatically, thereby realize further the additive process of cold aggregate, the present embodiment has saved the process of the secondary haul of load wagon 9, operation is simple, cost is low, and reduced the pollution in the discharge process.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (17)

1. an additive system, is characterized in that, comprising:
Material stocking device (8) is provided with the first discharging opening to be opened/closed (841), and the open and-shut mode of described material stocking device (8) by described the first discharging opening (841) be convey materials optionally;
Conveying arrangement (7), with described material transportation and discharging to described material stocking device (8);
Feed bin (6) receives and transports the described material from described material stocking device (8); And
Conveying device, receive from the described material of described feed bin (6) and with described material transportation to the material receiving position.
2. additive according to claim 1 system, it is characterized in that, described the first discharging opening (841) is arranged at the bottom of described material stocking device (8), described feed bin (6) is provided with the charging aperture (61) that is communicated with described the first discharging opening (841), and described charging aperture (61) is arranged at the below of described the first discharging opening (841).
3. additive according to claim 2 system, it is characterized in that, described material stocking device (8) comprises the first side wall (82) and the second sidewall (83) that is oppositely arranged, be connected to the midfeather (84) between the first end of the first end of described the first side wall (82) and described the second sidewall (83), and diapire (81), described the first discharging opening (841) is arranged on described midfeather (84), described diapire (81) comprises the second diapire section (812) of the first diapire section (811) and close described the first discharging opening (841), described the second diapire section (812) has the charge bank that unloads that is increasing highly gradually on away from the direction of described the first discharging opening (841).
4. additive according to claim 3 system, it is characterized in that, described the first side wall (82) comprises the first side wall section that is connected with described the second diapire section (812), and described the second sidewall (83) comprises the second side wall sections that is connected with described the second diapire section (812)
Described the first side wall section and described the second side wall sections are extended on the direction of described the first discharging opening (841) close to each other on the edge.
5. additive according to claim 3 system, is characterized in that, the described angle that unloads charge bank and horizontal plane is α, wherein 50 °≤α<70 °.
6. the described additive of any one system according to claim 1 to 5, is characterized in that, the outer setting of described the first discharging opening (841) has material guide device.
7. additive according to claim 6 system, it is characterized in that, described material guide device is deflector chute (3), and described deflector chute (3) comprises first paragraph and the second segment that is oppositely arranged, and two ends connect respectively the end section of the lower end of the lower end of described first paragraph and described second segment.
8. additive according to claim 7 system, is characterized in that, section of the described end increases gradually along the direction width near described feed bin (6), and the width of the charging aperture (61) of described feed bin (6) is greater than the width of the section outer end, the end of described deflector chute (3).
9. additive according to claim 1 system, is characterized in that, the outer setting of described the first discharging opening (841) has door to be opened/closed (4), and described the first discharging opening (841) is by described (4) setting to be opened/closed.
10. additive according to claim 1 system, it is characterized in that, a plurality of described material stocking devices (8) are arranged in order, and isolate by spacer assembly between every adjacent two described material stocking devices (8), each described material stocking device (8) all has the first discharging opening (841)
Being provided with that described feed bin (6) is corresponding with described material stocking device (8) is a plurality of, and each described feed bin (6) is provided with the charging aperture (61) that is communicated with corresponding described the first discharging opening (841).
11. additive according to claim 10 system, it is characterized in that, described spacer assembly comprises divider wall, described divider wall comprises the first side and second side of opposing setting, described the first side forms the first side wall (82) of one of them adjacent described material stocking device (8), and described the second side forms second sidewall (83) of another described material stocking device (8).
12. additive according to claim 11 system is characterized in that the longitudinal section of the part corresponding with described the second diapire section (812) of described divider wall is taper.
13. according to claim 10 to the described additive of any one system in 12, it is characterized in that, each described feed bin (6) also is provided with the second discharging opening (62), and described additive system comprises that also being arranged on being used between each described the second discharging opening (62) and described conveying device carries out the just proportioner (5) of gradating material to the described material of every kind of specification.
14. additive according to claim 13 system is characterized in that described proportioner (5) is arranged at the below of second discharging opening (62) of each described feed bin (6), picks and carry described material.
15. additive according to claim 13 system, it is characterized in that, described conveying device comprises belt drive unit, described belt drive unit comprises feeding belt device and charging belt device (1), wherein, described feeding belt device is arranged at the below of each described proportioner (5), receive and carry described material, described charging belt device (1) one end is arranged at the below of the discharge end of described feeding belt device, and the other end is towards the described material receiving position of described material.
16. additive according to claim 15 system is characterized in that the quantity of described feeding belt device is a plurality of, a plurality of described feeding belt devices are connected in series successively.
17. a construction material Preparation equipment comprises it is characterized in that the additive system, described additive system is the described additive of any one according to claim 1 to 16 system.
CN 201220739697 2012-12-28 2012-12-28 Material adding system and building material preparation equipment comprising same Expired - Lifetime CN202985790U (en)

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CN 201220739697 CN202985790U (en) 2012-12-28 2012-12-28 Material adding system and building material preparation equipment comprising same

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Application Number Priority Date Filing Date Title
CN 201220739697 CN202985790U (en) 2012-12-28 2012-12-28 Material adding system and building material preparation equipment comprising same

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103112086A (en) * 2012-12-28 2013-05-22 中联重科股份有限公司 Material adding system and building material preparation equipment comprising same
CN109176891A (en) * 2018-10-17 2019-01-11 青岛康兴混凝土有限公司 Aggregate bucket feeding device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103112086A (en) * 2012-12-28 2013-05-22 中联重科股份有限公司 Material adding system and building material preparation equipment comprising same
CN103112086B (en) * 2012-12-28 2015-08-19 中联重科股份有限公司 Material adding system and building material preparation equipment comprising same
CN109176891A (en) * 2018-10-17 2019-01-11 青岛康兴混凝土有限公司 Aggregate bucket feeding device

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