A charging device for blasting construction of soft surrounding rock behind existing anti-slide pile

Abstract

The application discloses a charging device for blasting construction of soft surrounding rock behind existing anti-slide piles, and relates to the technical field of blasting construction; the charging device comprises an outer shell and a charging bin, and a quantitative charging mechanism is additionally arranged in the charging bin; the quantitative charging mechanism comprises a lower positioner and an upper positioner, and the quantitative charging mechanism is used for realizing accurate filling of explosives; when the lower positioner slides upwards to the upper positioner and is nested into the lower positioner, the lower part of a pre-feeding bin is closed, the explosives are accumulated, the lower part of the pre-feeding bin is opened when the lower positioner slides away from the upper positioner under the driving of a motor, the explosives enter a lower charging bin from the pre-feeding bin, the use amount of the explosives is accurately controlled, the accuracy of explosion is improved, and the blasting efficiency is improved. The structure of the charging pipe is improved, the generation of gravel and soil is effectively avoided, the uniform transmission of explosive gas to the wall of a drilling hole is ensured, and therefore the blasting quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blasting construction, in particular to a charging device for blasting construction of soft surrounding rock behind existing anti-slide piles. BACKGROUND

[0002] With the rapid development of cities, blasting construction is increasingly widely used in tunnels. In order to meet the needs of people's daily travel, more and more highways, railways, subways, etc. begin to be built in cities. When a tunnel is selected, it will inevitably pass through a landslide area. In order to ensure the normal construction and operation of the tunnel, we need to first perform blasting reinforcement, use the explosion energy of explosives to work on the medium, and achieve the predetermined engineering goal, such as removing the soil around the anti-slide pile and blasting and removing the anti-slide pile. When blasting the soil behind the anti-slide pile, the conventional charging method is difficult to operate, slow to charge, time-consuming and laborious, and seriously affects the blasting efficiency. Moreover, the rock stratum is relatively broken, and the soil quality is poor. The conventional charging method has large disturbance, and is easy to cause gravel and soil to fall into the blast hole, affecting the blasting quality.

[0003] In order to solve the above problems, a charging device for soft surrounding rock blasting construction is disclosed in Chinese Patent No. CN 216283060 U, which includes a charging arc plate. An active slot is formed on the top surface of the charging arc plate. A protective arc plate is arranged in the active slot. A rotating column is screw-connected to the front end of the protective arc plate. A rotating column is fixedly arranged at the rear end of the rotating column. A through slot is formed on the front wall of the rotating column. A push rod is inserted into the through slot. A rotating slot is formed on the top surface of the front end of the charging arc plate. A fixed sleeve is screw-connected to the top surface of the rotating slot. An active slot is formed on the front wall of the fixed sleeve. A rotating slot is formed on the bottom surface of the fixed sleeve.

[0004] However, the charging device for soft surrounding rock blasting construction in the above-mentioned document still has the following defects:

[0005] 1. The device does not have a quantitative charging mechanism that can accurately control the amount of explosives, which makes it impossible to accurately control the amount of explosives, and thus the accuracy of the explosion is not high.

[0006] 2. During the forward and backward sliding process of the push plate in the charging arc plate, if the diameter difference between the two is too small, the worker needs to use force to control the forward and backward movement of the push plate, which is easy to cause the position of the whole device to deviate, which is not conducive to fixation. If the diameter difference between the two is too small, the powdery explosives are easy to remain in the charging arc plate, which is not conducive to ensuring the blasting quality. The operation space behind the anti-slide pile is small, and there is not enough space for normal use in many places.

[0007] 3. No structure is arranged on the outside of the charging arc plate to reduce the dust generated by tunnel blasting, which is not conducive to the safety of construction personnel. SUMMARY

[0008] In order to solve the problems of the prior art, such as the inaccurate control of the explosive amount, the low explosion accuracy, the difficulty in adding the explosive, and the inability to reduce the dust generated by tunnel blasting, the application discloses a charging device for blasting construction of soft surrounding rock behind an existing anti-slide pile, which is additionally provided with a plastic support and a limiting spring and the like to cooperate with each other, so as to firmly clamp the charging pipe in the drill hole and accurately control the amount of explosive by using a quantitative explosive feeding mechanism, so as to improve the blasting efficiency and the explosion accuracy and ensure the safety of construction personnel.

[0009] In order to achieve the above-mentioned purpose, the application provides the following technical scheme.

[0010] The application discloses a charging device for blasting construction of soft surrounding rock behind an existing anti-slide pile, which comprises an outer protective shell of a charging device and a charging bin, a quantitative explosive feeding mechanism is arranged in the charging bin, a charging pipe is arranged at the right end of the outer protective shell of the charging device, and a charging device is arranged in the inner portion of the outer protective shell of the charging device.

[0011] The quantitative explosive feeding mechanism comprises an upper positioner, a lower positioner, an upper fixed plate and a lower movable opening and closing plate, the upper fixed plate and the lower movable opening and closing plate are used in cooperation, and the upper positioner and the lower positioner are used in cooperation to close the charging bin.

[0012] The charging pipe is used in cooperation with the charging device, and the charging pipe comprises an outer pipe, a middle slidable pipe and an inner pipe from outside to inside in sequence, and the outer pipe is connected with the outer protective shell of the charging device.

[0013] Further, the upper fixed plate is fixedly connected with the inner wall of the charging bin, a lower movable opening and closing plate is arranged below the upper fixed plate, and an adjusting handle is further arranged on the lower movable opening and closing plate.

[0014] Further, the upper positioner and the lower positioner are both semicylinders, the upper positioner is connected with the inner wall of the charging bin, and the lower positioner is arranged at the lower end of the upper positioner.

[0015] Further, the lower positioner comprises a movable plate, a movable rod and a quantitative feeding column, the movable rod is arranged at the right side of the quantitative feeding column, a movable rod rack is arranged at the left side of the movable rod, the movable plate is arranged at the upper end of the quantitative feeding column, and a toothed rotary shaft meshing with the movable rod rack is connected with the right side of the movable plate.

[0016] Further, the quantitative feeding column is a slanted cylindrical table structure.

[0017] Further, the charging device comprises a rotary column, a spiral piece and a rotary handle, the rotary column is arranged in the inner portion of the outer protective shell of the charging device, the rotary handle is arranged at the leftmost side of the rotary column, and the spiral piece is further arranged on the rotary column.

[0018] Further, the outer wall of the charging bin is provided with a motor, a straight gear is mounted on the output shaft of the motor, and the straight gear is engaged with a rack provided on one side of the lower positioner.

[0019] Further, a plurality of clamping grooves are symmetrically arranged on the upper and lower sides of the outer pipeline, and reverse clamping teeth are arranged in the clamping grooves.

[0020] Further, plastic supports are also obliquely arranged at the two ends of the outer pipeline, the bottom end of the plastic support is directly connected with the outer pipeline, and the top end is connected with the outer pipeline through a limiting spring.

[0021] Compared with the prior art, the beneficial effects of the present application are:

[0022] 1. In the narrow space behind the pile, it is too difficult to add explosives, and the explosive charging device can add explosives to the blast hole at one time, greatly improving the work efficiency and solving the problems of difficult charging and low work efficiency.

[0023] 2. The amount of explosives added each time is the volume of the pre-charging bin, which accurately determines the amount of explosives, thereby improving the accuracy of the explosion and improving the blasting efficiency.

[0024] 3. The charging pipe is firmly clamped in the blast hole through the plastic support, and then the charging pipe is used for charging, which avoids the generation of gravel and soil, and ensures uniform transmission of explosive gas to the drill hole wall, thereby improving the blasting quality. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the charging device for the blasting construction of soft surrounding rock behind the existing anti-slide pile;

[0026] Figure 2 It is a structural schematic view of the charging device;

[0027] Figure 3 It is a sectional view of the inside of the charging bin;

[0028] Figure 4 It is a structural schematic view of the lower positioner;

[0029] Figure 5 It is a structural schematic view of the rotating shaft;

[0030] Figure 6 It is a schematic view of the lower movable opening and closing plate;

[0031] Figure 7 It is a structural schematic view of the water tank;

[0032] Figure 8 It is a structural schematic view of the cooperation of the inner pipeline, the intermediate slidable pipeline and the outer pipeline;

[0033] Figure 9Structure diagram of internal pipe;

[0034] Figure 10 Structure diagram of intermediate slidable pipe;

[0035] Figure 11 Sectional view diagram of intermediate slidable pipe;

[0036] Figure 12 Sectional view diagram of outer pipe.

[0037] Figure label explanation: 1, dosing bin; 101, adjusting handle; 102, fan-shaped strip; 103, upper fixed plate; 104, straight gear; 105, lower movable opening and closing plate; 106, upper positioner; 107, lower positioner; 108, matched rubber strip; 109, rack; 110, motor; 111, limiting lower column; 115, upper dosing bin; 116, pre-dosing bin; 117, lower dosing bin; 118, movable plate; 119, rotating shaft; 120, movable rod; 121, limiting column; 122, quantitative lower column; 123, movable rod installation groove; 124, strong compression spring; 125, movable rod rack; 126, reset spring, 2, rotating handle; 3, rotating column; 301, helical fin; 4, outer shell of dosing device; 401, connecting hole one; 7, internal pipe; 701, circular limiting protrusion; 702, internal pipe thread; 8, outer pipe; 801, buckling hole; 802, connecting hole two; 803, circular limiting groove; 804, conical groove; 805, reverse clamping tooth; 806, clamping groove; 807, water tank; 808, clamping belt; 809, clamping tooth; 810, plastic support; 811, limiting spring; 9, intermediate slidable pipe; 901, conical limiting protrusion; 902, internal thread. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0039] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0040] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or selective and mutually exclusive with other embodiments.

[0041] Example 1

[0042] Please refer to Figures 1 to 3 A charging device for blasting construction of soft surrounding rock behind existing anti-slide pile, comprising a charging device outer shell 4 and a charging bin 1, both of which are hollow cylindrical structures, the charging bin 1 is installed on the upper end of the charging device outer shell 4; the right end of the charging device outer shell 4 is connected with a charging pipe, the right side of the charging device outer shell 4 is provided with a connecting hole one 401, and the left side of the charging pipe is provided with a connecting hole two 802; during use, the fixing between the charging device outer shell 4 and the charging pipe can be realized by passing bolts through the connecting hole one 401 and the connecting hole two 802.

[0043] A quantitative charging mechanism is arranged in the charging bin 1, which comprises an upper positioner 106, a lower positioner 107, an upper fixed plate 103 and a lower movable opening and closing plate 105, and the upper fixed plate 103 and the lower movable opening and closing plate 105 are used in cooperation, the upper positioner 106 and the lower positioner 107 are used in cooperation, and the charging bin 1 is closed. Specifically, a motor 110 is arranged outside the charging bin 1, a rack 109 is arranged on one side of the lower positioner 107 inside, a spur gear 104 is arranged on the output shaft of the motor 110, part of the spur gear 104 is embedded in the charging bin 1, the spur gear 104 and the rack 109 are meshed with each other, the rack 109 is vertically installed and parallel to the lower positioner 107, when the motor 110 works, the lower positioner 107 can be driven to slide up and down by the spur gear 104, so as to change the volume of the pre-feeding bin 116. A limiting lower column 111 is arranged below the lower positioner 107 to avoid excessive displacement when the lower positioner 107 slides downward.

[0044] The upper positioner 106 and the lower positioner 107 are both semi-cylinders, the upper positioner is connected with the upper opening and closing plate 103, a gap is formed in the middle to nest the lower movable opening and closing plate 105, the lower positioner 107 is composed of a lower movable plate 118, a movable rod 120 and a quantitative lower column 122, a rubber strip 108 is arranged at the upper end position of the quantitative lower column 12, a reset spring 126 is arranged on the left side of the movable plate 118, a toothed rotating shaft 119 is connected on the right side, the toothed rotating shaft 119 is rotationally connected with the limiting columns 121 at both ends, the quantitative lower column 122 is provided with a movable rod mounting groove 123 for mounting the movable rod 120, when in use, one side of the movable rod 120 is provided with a movable rod rack 125, and a strong compression spring 124 is arranged at the lower part, when the movable rod 120 moves upward, the movable plate 118 is driven to rotate, it should be noted that the movable plate 118 is connected with one of the teeth of the toothed rotating shaft 119, when the movable plate 118 rotates downward, it stops rotating when the bottom surface of the movable plate 118 is attached to the top surface of the quantitative lower column.

[0045] The lower positioner 107 is provided with a rubber strip 108. When the lower positioner 107 is driven upward by the motor 110 and slides to the position where the upper positioner 106 and the lower positioner 107 are embedded, the pre-charge bin 116 is closed, and the volume of the pre-charge bin 116 is the amount of explosive at this time. When the lower positioner 107 is driven downward by the motor 110 and slides to the position where the upper positioner 106 and the lower positioner 107 are separated, the pre-charge bin 116 is opened. When the bottom of the movable rod 120 contacts the limiting lower column 111, the movable rod 120 will move upward, and the movable plate 118 will rotate downward, and the explosive will enter the charge lower bin 117. After the explosive is loaded, the motor is started to drive the lower positioner 107 to move upward, and the lower positioner 107 returns to the original position under the action of the reset spring 126.

[0046] As shown in Figure 4 , Figure 5 and Figure 6 , the upper fixed plate 103 is a semicircular structure, and the lower movable opening and closing plate 105 is a circular structure, half of which is a closed structure and the other half is provided with a fan-shaped strip 102. The upper fixed plate 103 and the upper positioner 106 are fixedly connected with the inner wall of the explosive loading bin 1. The upper positioner 106 is provided with a ring-shaped limiting groove at the top end, and the lower movable opening and closing plate 105 is nested in the limiting groove. The lower movable opening and closing plate 105 is connected with the adjusting handle 101. By rotating the adjusting handle 101, the lower movable opening and closing plate 105 can be driven to rotate. When the fan-shaped strip 102 is below the upper movable opening and closing plate 103, the plane formed between the upper fixed plate 103 and the lower movable opening and closing plate 105 is in a closed state. When the fan-shaped strip 102 is rotated to the right end of the upper movable opening and closing plate 103, the plane formed between the upper fixed plate 103 and the lower movable opening and closing plate 105 is in an open state, so as to control the explosive into the pre-charge bin 116.

[0047] In use, the lower positioner 107 is driven upward by the motor 110 to slide, so that the volume of the pre-charge bin 116 reaches the expected size. The adjusting handle 101 is rotated to make the plane formed between the upper fixed plate 103 and the lower movable opening and closing plate 105 in an open state. The explosive exceeding the upper fixed plate 103 is added from the charge upper bin 115. Then the adjusting handle 101 is rotated to make the plane formed between the upper fixed plate 103 and the lower movable opening and closing plate 105 in a closed state. Then the lower positioner 107 is driven downward by the motor 110 to slide, so that the lower positioner 107 is separated from the upper positioner 106. At this time, the explosive in the pre-charge bin 116 enters the charge lower bin 117. The explosive is pushed into the charging pipe to realize the precise loading of the amount of explosive.

[0048] The medicating device is arranged inside the outer protective shell, and comprises a rotating column 3, helical blades 301 and a rotating handle 2. The rotating handle 2 is arranged at the leftmost side of the outer protective shell 4, and the rotating column 3 is arranged inside the outer protective shell 4. The rotating column 3 is provided with the helical blades 301. The rotating handle 2 can drive the rotating column 3 to rotate, thereby driving the helical blades 301 to rotate, so as to push the powder in the medicating bin 1 from left to right into the medicating pipe.

[0049] Reference Figures 7 to 12 The medicating pipe is made of plastic material, and is used in cooperation with the medicating device 3. The medicating pipe comprises, from outside to inside, an outer pipe 8, a middle slidable pipe 9 and an inner pipe 7. The left side of the outer side of the inner pipe 7 is provided with a circular limiting protrusion 701, and the right side of the outer side is provided with an inner pipe thread 702. The inner side of the inner pipe 7 is smooth. The right side of the inner side of the middle slidable pipe 9 is provided with an inner thread 902, and the outer side is provided with a long strip-shaped tapered limiting protrusion 901 for limiting the rotation of the middle slidable pipe 9. The outer pipe 8 is combined by two semicircular arc plates and connected through a buckling hole 801. The right side of the outer pipe 8 is provided with a connecting hole 802, which can be connected with the medicating device through a bolt. The right side of the inner side of the outer pipe 8 is provided with a tapered groove 804 matched with the tapered limiting protrusion 901 arranged on the middle slidable pipe 9, thereby limiting the rotation of the middle slidable pipe 9. The left side of the inner side of the outer pipe 8 is provided with a circular limiting groove 803 matched with the circular limiting protrusion 701 of the inner pipe 7, thereby limiting the position of the inner pipe 7.

[0050] In use, the inner pipe 7, the middle slidable pipe 9 and the outer pipe 8 are assembled in sequence. The circular limiting groove 803 on the outer pipe 8 and the circular limiting protrusion 701 on the inner pipe 7 are clamped with each other, thereby fixing the position of the inner pipe 7. The tapered groove 804 on the outer pipe 8 and the tapered limiting protrusion 901 arranged on the middle slidable pipe 9 are coincided, thereby limiting the rotation of the inner pipe 7. After the medicating pipe is placed in the blast hole, the inner pipe 7 is rotated, thereby generating a pushing force of the inner pipe thread 702 to push the middle slidable pipe 9 forward.

[0051] Example 2

[0052] Reference Figure 6 and Figure 7On the basis of embodiment 1, the outer pipeline 8 is provided with plastic supports 810 at both ends, the plastic supports 810 are directly connected with one end of the outer pipeline 8, and the other end is connected with the outer pipeline 8 through a limiting spring 811, and the elastic restoring force of the spring can make the plastic supports 810 tightly clamped in the blast hole, thereby limiting the movement of the dosing pipe and fixing the dosing pipe; a plurality of clamping grooves 806 for mounting water tanks 807 are arranged on the outer pipeline 8, and reverse clamping teeth 805 are arranged in the clamping grooves 806; the water tanks 807 are connected with a clamping belt 808 at the lower part, clamping teeth 809 matched with the reverse clamping teeth 805 are arranged on both sides of the bottom of the clamping belt 808, and in use, according to the requirements, a certain number of water tanks 807 are clamped in the clamping grooves 806, which can reduce the dust generated by tunnel blasting, thereby ensuring the safety of construction personnel.

[0053] Application case of embodiment 3

[0054] This embodiment describes the application of the present application in the field of blasting construction technology. In actual use, according to the requirements, a corresponding number of water tanks 807 are added on the dosing pipe as required, and then the dosing pipe is pushed into the blast hole. Due to the action of the plastic supports 810 and the limiting spring 811, the dosing pipe will be fixed in the blast hole. Then rotate the inner pipeline 7. Due to the mutual cutting of the internal thread 902 and the inner pipeline thread 702, and the limitation of the conical limiting protrusion 901 to the rotation of the middle slidable pipeline 9, the middle slidable pipeline 9 will be pushed forward. After the middle slidable pipeline 9 reaches the bottom of the blast hole, the connecting hole one 401 and the connecting hole two 802 are connected, the dosing device is assembled on the dosing pipe, the lower positioner 107 is driven to move by the motor 110, so that the volume of the pre-dosing bin 116 reaches the expected size, the plane formed between the upper fixed plate 103 and the lower movable opening and closing plate 105 is in an open state by rotating the adjusting handle 101, and then the explosive exceeding the upper fixed plate 103 is added from the material port. Then rotate the adjusting handle 101 to make the plane formed between the upper fixed plate 103 and the lower movable opening and closing plate 105 in a closed state, and then drive the lower positioner 107 to disengage from the upper positioner 106 by the motor 110. When the movable rod 120 is on the limiting lower column 111, the movable rod 120 stops moving, and the movable plate 118 is tilted downward under the drive of the rotating shaft 119, and the accumulated explosive falls into the lower dosing bin 117. The explosive is pushed into the dosing pipe by the lower rotating spiral blade 301, and the accurate filling of the explosive is realized. After all the medicine is added, the dosing device is removed, the plastic dosing pipe is left in the blast hole, and the dosing is completed.

[0055] The present application is not limited to the above embodiments, and the protection scope of the present application is subject to the claims, and any replacement, modification, simple addition or deletion of the present technology that can be easily thought of by those skilled in the art falls within the protection scope of the present application.

Claims

1. A charging device for blasting construction in weak surrounding rock after existing anti-slide piles, comprising an outer protective shell (4) of the charging device and a charging chamber (1), characterized in that, A quantitative dispensing mechanism is provided in the dosing chamber (1), and a dosing pipe is provided at the right end of the outer shell (4) of the dosing device, and a dosing device is provided inside the outer shell (4); wherein, The quantitative drug dispensing mechanism includes an upper positioner (106), a lower positioner (107), an upper fixed plate (103), and a lower movable opening and closing plate (105). The upper fixed plate (103) and the lower movable opening and closing plate (105) are used together, and the upper positioner (106) and the lower positioner (107) are used together to close the drug dispensing chamber (1). The dosing tube is used in conjunction with the dosing device, and the dosing tube includes an outer pipe (8), a middle sliding pipe (9) and an inner pipe (7) from the outside to the inside. The outer pipe (8) is connected to the outer shell (4) of the dosing device. The lower positioner (107) consists of a movable plate, a movable rod, and a quantitative lower column (122). A movable rod (120) is provided on the right side of the quantitative lower column (122), and a movable rod rack (125) is provided on the left side of the movable rod (120). The movable plate (118) is located at the upper end of the quantitative lower column (122), and a toothed rotating shaft (119) that meshes with the movable rod rack (125) is connected to the right side of the movable plate (118). The quantitative lower column (122) is a slanted cylindrical truncated cone structure.

2. The charging device for blasting construction in weak surrounding rock after the application of existing anti-slide piles, as described in claim 1, is characterized in that... The upper fixed plate (103) is fixedly connected to the inner wall of the dosing chamber (1). A lower movable opening and closing plate (105) is provided below the upper fixed plate (103), and an adjustment handle (101) is also provided on the lower movable opening and closing plate (105).

3. The charging device for blasting construction in weak surrounding rock after the application of existing anti-slide piles, as described in claim 1, is characterized in that... Both the upper positioner (106) and the lower positioner (107) are semi-cylinders. The upper positioner (106) is connected to the inner wall of the dosing chamber (1), and the lower positioner (107) is located at the lower end of the upper positioner (106).

4. The charging device for blasting construction in weak surrounding rock after the application of existing anti-slide piles, as described in claim 1, is characterized in that... The dosing device includes a rotating column (3), a spiral blade (301) and a rotating handle (2). The rotating column (3) is located inside the outer shell (4) of the dosing device, and the rotating column (3) is also provided with a spiral blade (301).

5. A charging device for blasting in weak surrounding rock after the application of existing anti-slide piles, as described in claim 1, characterized in that, The outer wall of the dosing chamber (1) is also equipped with a motor (110), and a spur gear (104) is provided on its output shaft. The spur gear (104) meshes with a rack (109) provided on one side of the lower positioner (107).

6. A charging device for blasting in weak surrounding rock after the application of existing anti-slide piles, as described in claim 5, is characterized in that... The outer pipe (8) has several slots (806) symmetrically arranged on the upper and lower sides, and the slots (806) have reverse teeth (805) inside.

7. A charging device for blasting construction in weak surrounding rock after the application of existing anti-slide piles, as described in claim 6, is characterized in that... The outer pipe (8) is also inclined with plastic supports (810) at both ends. The bottom end of the plastic support (810) is directly connected to the outer pipe (8), and the top end is connected to the outer pipe (8) through a limiting spring (811).

8. A method for using a charging device for blasting in weak surrounding rock after the application of existing anti-slide piles, as described in any one of claims 1-7, characterized in that... Step 1: Install the water tank (801) into the slot (806); Step 2: Secure the dosing tube in the borehole using the plastic support (810), rotate the internal pipe (7) to fully push out the middle sliding pipe (9) so that it fills the borehole; Step 3: Assemble the dosing device onto the dosing pipe; Step 4: Turn on the motor (110) and adjust the pre-feeding hopper (116). Step 5: Rotate the lower movable opening and closing plate (105); operate the lower positioner (107) to move down and disengage from the upper positioner (106). Step 6: The movable rod (120) stops moving, the movable plate (118) rotates and tilts, and all the accumulated explosives fall into the feeding chamber (117). Step 7: Disassemble the explosive dosing device and carry out the blasting.

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