A bag filling machine for open-pit end-wall coal filling mining

Abstract

The present invention discloses a bag filler for open-pit end wall coal filling and mining, the bag filler comprising a fuselage, a running device, a filling pipe, a suspension device and a filling bag. The bag filler is operated to the end of the filling tunnel, and then the filling pipe is used to inject the filling material into the filling bag. In the process of the bag filler retreating outward from the end of the filling tunnel, the entire filling tunnel is filled by injecting the filling material into the filling bag to ensure the stability of the open-pit end wall. The present invention can effectively improve the filling rate of the open-pit end wall mining tunnel, greatly improve the efficiency of filling mining, and increase the strength of the filling body to ensure the stability of the open-pit end wall. At the same time, it can greatly reduce or eliminate the coal pillars between the open-pit end wall filling and mining tunnels, greatly improve the recovery rate of the open-pit end wall pressed resources, and increase the economy and applicability of the open-pit end wall coal filling and mining technology.

Description

Technical Field

[0001] The invention belongs to the technical field of open-pit end-wall compressed coal filling mining, and in particular relates to a bag filling machine used for open-pit end-wall compressed coal filling mining. Background Art

[0002] As a basic energy source in my country, coal plays a pivotal role in the energy structure. In recent years, with the rapid development of the economy and society, the demand for coal resources has increased significantly. Among them, open-pit mining, as one of the important means of coal resource exploitation, has also seen a rapid growth in its scale, which has also made the problem of serious coal resource loss caused by slope crushing in open-pit mining increasingly prominent.

[0003] At present, the main mining method for open-pit slope coal is end-wall mining. The essence of this method is to recover coal resources in the form of tunneling at the end of the open pit. However, this mining method has two major technical defects: (1) This mining method usually requires a safety coal pillar to be left between two adjacent mining tunnels, which directly leads to a low recovery rate of end-wall coal resources; (2) This mining method only leaves a protective coal pillar between the mining tunnels to support the overlying strata, or performs simple tunnel-type dumping and filling. Due to the low filling rate of dumping and filling, the supporting strength of the filling body is insufficient. After a large area of ​​open-pit end-wall mining, its coal pillar may become unstable under the long-term pressure of the overlying strata, which brings huge hidden dangers to the safe production of the mining area and seriously threatens the production equipment and life safety of the workers in the mining area. Therefore, it is necessary to design a safe, reliable, efficient and practical bag filling machine with high filling rate and good filling effect. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a bag filling machine for open-pit end-wall coal filling mining which has the advantages of scientific design, safety, reliability, convenient operation, good working continuity and strong adaptability.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A bag filling machine for open-pit end-wall coal filling mining, the bag filling machine comprises a machine body, a traveling device, a filling pipe, a hanging device and a filling bag; wherein the machine body is installed on the traveling device; the filling pipe and the hanging device are installed on the machine body; the filling bag is hung on the front end of the hanging device;

[0007] When in working state, the bag filler is run to the end of the filling tunnel, and then the filling material is injected into the filling bag through the filling pipe. In the process of the bag filler retreating outward from the end of the filling tunnel, the entire filling tunnel is filled by injecting filling material into the filling bag to ensure the stability of the open-air end wall.

[0008] A further improvement of the present invention is that a group of partitions are arranged in the filling bag, and the filling bag is divided into N independent storage units by the partitions, which are storage unit No. 1, storage unit No. 2, storage unit No. 3, ..., and storage unit No. N from the inside to the outside.

[0009] A further improvement of the present invention is that a one-way valve is provided on each partition, and the one-way valve has the function of preventing the filling material from flowing from the inner storage unit to the outer storage unit; one end of the filling pipeline passes through the one-way valve on each partition and is located in the first storage unit, and the other end is connected to the material delivery pipeline; during filling, the filling pipeline fills the storage units from the inside to the outside in sequence; the specific steps are:

[0010] a. Filling pipe injects filler into storage unit No. 1 until storage unit No. 1 is full;

[0011] b. After the No. 1 storage unit is full, the bag filler moves backward and shrinks the filling pipe. The filling pipe passes through the No. 1 check valve on the No. 1 partition, and its end shrinks from the No. 1 storage unit to the No. 2 storage unit;

[0012] c. The filling pipe injects the filling material into the second storage unit until the second storage unit is full;

[0013] d. Follow this step to fill all storage units of the filling bag from the inside to the outside until the filling channel is full.

[0014] A further improvement of the present invention is that a group of partitions are arranged in a tilted manner from outside to inside in the filling bag perpendicular to the filling channel, wherein storage unit No. 1 is a trapezoidal structure laterally, and the remaining storage units are a quadrilateral structure with upper and lower sides parallel.

[0015] A further improvement of the present invention is that a pressure sensor is arranged in the storage unit to monitor the pressure of the filling material in the storage unit. When the pressure exceeds the rated pressure, the pressure sensor sends a signal to the control system to control the contraction of the filling pipe.

[0016] A further improvement of the present invention is that the height and width of the filling bag are consistent with the height and width of the filling lane, and the unfolded length of the filling bag is not less than the length of the filling lane; the filling bag has a set elasticity under the action of pressure, and can adapt to the ups and downs of the filling lane to ensure that the retained material fills the entire lane.

[0017] A further improvement of the present invention is that the filling pipe has a telescopic function and its height can be adjusted by a filling pipe lifting cylinder.

[0018] A further improvement of the present invention is that the suspension device has a telescopic function and its height can be adjusted by a lifting cylinder of the suspension device;

[0019] The fuselage is equipped with a balancing device, which includes a balancing rod and a counterweight. The stability of the fuselage is adjusted by adjusting the position of the counterweight on the balancing rod to ensure the balance of the bag filling machine.

[0020] A further improvement of the present invention is that the traveling device is a crawler-type or wheel-axle-type traveling mechanism.

[0021] A further improvement of the present invention is that the bag filling machine is also equipped with an intelligent control system, through which remote control or automatic control of various operations of the bag filling machine is achieved.

[0022] The present invention has at least the following beneficial technical effects:

[0023] The bag filling machine used for open-pit end-slope compressed coal filling mining adopted by the present invention has scientific design, safety and reliability, easy operation, good working continuity and strong adaptability. The equipment can effectively improve the filling rate of open-pit end-slope mining tunnels and greatly improve the efficiency of filling mining. Moreover, the strength of the filling body can be increased by the equipment to ensure the stability of the open-pit end-slope, and at the same time, the width of the coal pillars between the open-pit end-slope compressed coal filling mining tunnels can be reduced, which greatly improves the recovery rate of the open-pit end-slope compressed coal filling resources and increases the economy and applicability of the open-pit end-slope compressed coal filling mining technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic structural diagram of a bag filling machine used for open-pit end-wall compressed coal filling mining.

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the filling bag.

[0026] Figure 3 It is a side cross-sectional view of the filled bag.

[0027] Figure 4 It is a structural schematic diagram of the body, suspension device, filling pipeline and traveling device of the bag filling machine.

[0028] Figure 5 is a schematic diagram of the filling process of the filling bag, where Figure 5 (a) is filling storage unit No. 1, Figure 5 (b) The filling of storage unit No. 1 has been completed, Figure 5 (c) Storage unit No. 2 is being filled.

[0029] Description of reference numerals:

[0030] 1. Fuselage; 2. Traveling device; 3. Filling pipe; 4. Suspension device; 5. Filling bag; 6. Feed pipe; 7. Partition; 8. Check valve; 9. Storage unit No. 1; 10. Storage unit No. 2; 11. Storage unit No. 3; 12. Balance bar; 13. Counterweight; 14. Suspension device lifting cylinder; 15. Filling pipe lifting cylinder; 16. Partition No. 1; 17. Check valve No. 1. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 5 As shown, the present invention provides a bag filling machine for open-pit end-wall compressed coal filling mining, and the bag filling machine includes a machine body 1, a walking device 2, a filling pipe 3, a suspension device 4 and a filling bag 5.

[0033] Among them, the fuselage 1 is installed on the walking device 2; the filling pipe 3 and the suspension device 4 are installed on the fuselage; the filling bag 5 is suspended at the front end of the suspension device 4; in the working state, the bag filler is run to the end of the filling tunnel, and then the filling pipe 3 is used to inject the filling material into the filling bag 5. In the process of the bag filler retreating outward from the end of the filling tunnel, the entire filling tunnel is filled by injecting the filling material 5 into the filling bag to ensure the stability of the open-air end wall.

[0034] A group of partitions 7 are arranged in the filling bag 5, and the filling bag 5 is divided into N independent storage units by the partitions 7, which are storage unit No. 1 9, storage unit No. 2 10, storage unit No. 3 11, ..., and storage unit No. N from the inside to the outside.

[0035] The partition is provided with a one-way valve 8. The filling pipe 3 passes through the one-way valve 8 on each partition 7. One end is located in the first storage unit 9, and the other end is connected to the material delivery pipe 6. When filling, the filling pipe fills the storage unit from the inside to the outside. The one-way valve 8 has the function of preventing the filling material from flowing from the inner storage unit to the outer storage unit.

[0036] The specific steps are:

[0037] a filling pipe 3 into the first storage unit 9 into the filling, until the first storage unit 9 is full;

[0038] b. After the storage unit 9 is full, the bag filler moves back and shrinks the filling pipe 3, the filling pipe 3 passes through the one-way valve 17 on the first partition 16, and its end is contracted from the first storage unit 9 to the second storage unit 10;

[0039] c. Filling pipe 3 injects filler into the second storage unit 10 until the second storage unit 10 is full;

[0040] d. Follow this step to fill all storage units of the filling bag 5 from the inside to the outside in sequence until the filling lane is full.

[0041] The group of partitions 7 are arranged in a tilted manner from outside to inside in the filling bag 5 perpendicular to the filling channel, wherein the first storage unit 9 is a trapezoidal structure in the lateral direction, and the other storage units are a quadrilateral structure with upper and lower sides parallel.

[0042] The height and width of the filling bag 5 are consistent with the height and width of the filling lane, and the unfolded length of the filling bag is not less than the length of the filling lane; the filling bag 5 has a certain elasticity under the action of pressure, and can adapt to the ups and downs of the filling lane to ensure that the retained material fills the entire lane.

[0043] A pressure sensor is arranged in the storage unit, and the pressure of the filling material in the storage unit is monitored by the pressure sensor. When the pressure exceeds the rated pressure, the pressure sensor sends a signal to the control system to control the contraction of the filling pipe 3.

[0044] The filling pipe 3 has a telescopic function, and its height can be adjusted by the filling pipe lifting cylinder 15.

[0045] The suspension device 4 has a telescopic function, and its height can be adjusted by the suspension device lifting cylinder 14 .

[0046] The fuselage 1 is equipped with a balancing device, which includes a balancing rod 12 and a counterweight 13. The stability of the fuselage 1 can be adjusted by adjusting the position of the counterweight 13 on the balancing rod 12 to ensure the balance of the bag filling machine.

[0047] The traveling device 2 is a crawler-type or wheel-axle-type traveling mechanism.

[0048] The bag filling machine is also equipped with an intelligent control system, through which remote control or automatic control of various operations of the bag filling machine can be achieved.

Claims

1. A bag filling machine for open-pit end-wall coal filling mining, characterized in that: The bag filling machine comprises a body (1), a running device (2), a filling pipe (3), a suspension device (4) and a filling bag (5); wherein: The machine body (1) is mounted on the walking device (2); the filling pipe (3) and the suspension device (4) are mounted on the machine body (1); the filling bag (5) is suspended on the front end of the suspension device (4); When in working state, the bag filling machine is moved to the end of the filling tunnel, and then the filling material is injected into the filling bag (5) through the filling pipe (3). When the bag filling machine is moved backward from the end of the filling tunnel, the entire filling tunnel is filled by injecting the filling material into the filling bag (5), so as to ensure the stability of the open-air end wall. A group of partitions (7) are arranged in the filling bag (5), and the partitions (7) are used to divide the filling bag (5) into N independent storage units, which are storage unit No. 1 (9), storage unit No. 2 (10), storage unit No. 3 (11), ..., and storage unit No. N from the inside to the outside. A pressure sensor is arranged in the storage unit, and the pressure of the filling material in the storage unit is monitored by the pressure sensor. When the pressure exceeds the rated pressure, the pressure sensor sends a signal to the control system to control the contraction of the filling pipe (3); Each partition (7) is provided with a one-way valve (8), which has the function of preventing the filling material from flowing from the inner storage unit to the outer storage unit; the filling pipeline (3) passes through the one-way valve (8) on each partition (7), one end of which is located in the first storage unit (9), and the other end is connected to the material delivery pipeline (6); during filling, the filling pipeline (3) fills the storage units from the inside to the outside in sequence; the specific steps are: a filling pipe (3) into the first storage unit (9) into the filling, until the first storage unit (9) is full; b. After the No. 1 storage unit (9) is filled, the bag filling machine moves backward and shrinks the filling pipe (3). The filling pipe (3) passes through the No. 1 check valve (17) on the No. 1 partition (16), and its end is shrunk from the No. 1 storage unit (9) to the No. 2 storage unit (10); c. The filling pipe (3) injects the filling material into the second storage unit (10) until the second storage unit (10) is full; d. Follow this step to fill all storage units of the filling bag (5) from the inside out until the filling channel is full.

2. A bag filling machine for open-pit end-wall coal filling mining according to claim 1, characterized in that: A group of partitions (7) are arranged in a manner perpendicular to the filling channel and tilted from outside to inside in the filling bag (5), wherein the first storage unit (9) has a trapezoidal structure in the lateral direction, and the remaining storage units have a quadrilateral structure with upper and lower sides parallel.

3. A bag filling machine for open-pit end-wall coal filling mining according to claim 1, characterized in that: The height and width of the filling bag (5) are consistent with the height and width of the filling lane, and the unfolded length of the filling bag is not less than the length of the filling lane; the filling bag (5) has a set elasticity under the action of pressure, and can adapt to the ups and downs of the filling lane to ensure that the filled material fills the entire lane.

4. A bag filling machine for open-pit end-wall coal filling mining according to claim 1, characterized in that: The filling pipe (3) has a telescopic function, and its height can be adjusted by means of a filling pipe lifting cylinder (15).

5. A bag filling machine for open-pit end-wall coal filling mining according to claim 1, characterized in that: The suspension device (4) has a telescopic function, and its height can be adjusted by a suspension device lifting cylinder (14); The machine body (1) is equipped with a balancing device, which includes a balancing rod (12) and a counterweight (13). The stability of the machine body (1) is adjusted by adjusting the position of the counterweight (13) on the balancing rod (12), thereby ensuring the balance of the bag filling machine.

6. A bag filling machine for open-pit end-wall coal filling mining according to claim 1, characterized in that: The walking device (2) is a crawler-type or wheel-axle-type walking mechanism.

7. A bag filling machine for open-pit end-wall coal filling mining according to claim 1, characterized in that: The bag filling machine is also equipped with an intelligent control system, through which remote control or automatic control of various operations of the bag filling machine can be achieved.

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