Blasting blast hole filling device

Abstract

The invention discloses a blasting hole filling device which comprises a rack, a winding device, an ejector rod and a conveying mechanism. The front end of the machine frame is provided with a guide pipe used for being aligned with a blast hole. The winding device is mounted at the lower part of the rack; the ejector rod can be bent and deformed, and the ejector rod is wound on the winding device; the conveying mechanism is arranged on the front portion of the machine frame and comprises a pair of conveying wheels arranged on the machine frame and a driving mechanism used for driving the pair of conveying wheels to synchronously and reversely rotate, and a conveying channel located right behind the guide pipe is formed between the two conveying wheels. The ejector rod is led out of the winding device and sequentially passes through the conveying channel and the guide pipe. The device can be suitable for explosive filling and stemming hole sealing of deep blast holes, and the labor intensity of explosive filling and stemming hole sealing is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of explosive blasting, and in particular to a blasting blasthole filling device. Background Art

[0002] Blasting is a technical means of breaking, demolishing or excavating objects by using dynamite or other explosives. It is widely used in quarries, mines, bridges, tunnels, blasting demolition and other fields.

[0003] The process of explosive blasting includes the steps of drilling, charging, borehole sealing and detonating. The traditional operation method is: when charging, the worker first loads a section of explosives into the borehole mouth, and pushes the explosives into the borehole through a push rod, and then repeats the above operation to complete the loading of explosives. After the explosives are loaded, the worker loads a section of gun mud into the borehole mouth, and pushes the gun mud into the borehole through a push rod. After the gun mud is pushed into the borehole, the push rod is pulled back and forth to compact the gun mud. During the filling operation, the labor intensity of the workers is extremely high.

[0004] Chinese invention patent CN114963913A discloses an automatic filling device for engineering blasting gun mud, which is integrally installed on a rock drilling trolley or a charging trolley. During operation, the gun mud tube is inserted into the device through the filling port, the pneumatic rod contracts and pushes the gun mud tube to the head through the transmission rod to squeeze the baffle, and continues to apply pressure to squeeze the gun mud out of the tube mouth. At this time, the power rod and the power wheel apply the external rotational force to the cam I and cam II through the transmission bearing group, and cooperate with the spring to generate a forward pulse thrust to compact the gun mud and realize the filling of the gun mud. Although the device can reduce the quality and labor intensity of gun mud filling, it is only suitable for the filling of shallow blast holes, but not for deeper blast holes. Summary of the invention

[0005] In view of the defects in the prior art, the present invention provides a blasting borehole filling device, so that it can be used for explosive filling and borehole sealing of deeper boreholes, thereby reducing the labor intensity of explosive filling and borehole sealing.

[0006] The present invention provides a blasting hole filling device, comprising:

[0007] A frame, wherein the front end of the frame is provided with a guide tube for aligning with the blast hole;

[0008] A winding device, the winding device is installed at the lower part of the frame;

[0009] A push rod, the push rod can be bent and deformed, and the push rod is rolled up on the winding device;

[0010] A conveying mechanism is arranged at the front part of the frame, comprising a pair of conveying wheels arranged on the frame and a driving mechanism for driving the pair of conveying wheels to rotate synchronously in opposite directions, a conveying channel located directly behind the guide tube is formed between the two conveying wheels, and the push rod is led out from the winding device and passes through the conveying channel and the guide tube in sequence.

[0011] Furthermore, the winding device includes a winding motor which is rotatably mounted on the frame and is used to drive the winding wheel to rotate forward and reversely.

[0012] Furthermore, the driving mechanism includes a gear box and a reduction motor, the gear box is installed on a frame, a pair of meshing synchronous gears are rotatably installed in the gear box, the reduction motor is installed on the back side of the gear box and is transmission-connected to any of the synchronous gears, and the two conveying wheels are respectively arranged on the front side of the gear box and are coaxially fixed on the axles of each synchronous gear one by one.

[0013] Further, it also includes two guide rods and a first limit switch;

[0014] The two guide rods are respectively arranged on both sides of the gear box and extend along the transmission direction of the push rod. Both ends of each guide rod are respectively fixed to the frame through a support. Both sides of the gear box are respectively provided with guide sleeves slidably sleeved on the guide rods on the corresponding sides. Each guide rod is sleeved with a first spring supported between the guide sleeve and the support behind it.

[0015] The first limit switch is arranged at the rear of the gear box. When the first limit switch is touched, the first limit switch controls the reduction motor to stop working.

[0016] Furthermore, it also includes a push-pull electromagnet, a locking member and a second limit switch;

[0017] The push-pull electromagnet is arranged at the rear of the gear box and fixed on the frame, and the moving iron core of the push-pull electromagnet extends forward and is fixedly connected to the rear side of the gear box;

[0018] The locking member is installed on the gear box, and the locking member can lock or loosen the push rod;

[0019] A telescopic structure is provided at the rear of the gear box, and the telescopic structure includes a first telescopic section, a second telescopic section and a third telescopic section, and telescopic chambers are provided in the second telescopic section and the third telescopic section, a first limiting ring is provided at the front end of the first telescopic section, and a rear end of the first telescopic section is adapted to the telescopic chamber of the second telescopic section, a second spring supported between the first limiting ring and the second telescopic section is provided on the outer sleeve of the first telescopic section, a first limit switch is provided at the rear end of the telescopic chamber of the second telescopic section, a second limiting ring is provided at the front end of the second telescopic section, and the rear end of the second telescopic section is adapted to the telescopic chamber of the third telescopic section, a third spring supported between the second limiting ring and the third telescopic section is provided on the outer sleeve of the second telescopic section, and the elastic force of the third spring is greater than the elastic force of the second spring, and the second limit switch is provided at the rear end of the telescopic chamber of the third telescopic section;

[0020] During the process of delivering gun mud into the blast hole, when the first telescopic joint touches the first limit switch, the reduction motor is controlled to stop working, the locking piece locks the push rod, the push-pull electromagnet is energized, and the push-pull electromagnet pulls the gear box backward through the moving iron core. When the second telescopic joint touches the second limit switch, the push-pull electromagnet is controlled to be de-energized.

[0021] Furthermore, the push-pull electromagnet includes a shell, a coil bracket arranged in the shell, a coil winding wrapped around the outside of the coil bracket, a fixed iron core fixed to one end of the coil winding, and a moving iron core inserted into the other end of the coil winding. The rear end of the moving iron core is provided with a pull rod extending backward out of the shell, and the rear end of the pull rod is threadedly connected with an adjusting nut.

[0022] Furthermore, the pull rod outer sleeve is provided with a fourth spring supported between the adjusting nut and the outer shell.

[0023] Furthermore, the locking member includes a fixed frame, a rotating frame and an electric push-pull rod, the fixed frame and the rotating frame are respectively arranged on both sides of the top rod, one end of the fixed frame is fixed to the frame, and one end of the rotating frame is hinged to the frame, and the relative inner sides of the fixed frame and the rotating frame are provided with clamping blocks respectively used to clamp on both sides of the top rod, and the two ends of the electric push-pull rod are respectively hinged to the other end of the fixed frame and the rotating frame.

[0024] Furthermore, the axle of any of the synchronous gears passes through the back side of the gear box and is provided with a first bevel gear, the reduction motor is arranged parallel to the back side of the gear box, and the output end of the reduction motor is provided with a second bevel gear meshing with the first bevel gear.

[0025] Furthermore, a meter wheel for measuring the length of the push rod sent into the blast hole is provided on the frame.

[0026] The beneficial effects of the present invention are embodied in:

[0027] The frame of the present application is installed on a rock drilling trolley or a charging trolley, and the push rod is wound on the winding device. When filling explosives or gun mud, the front end of the push rod is first retreated to the rear of the guide tube, and then the explosives or gun mud are loaded into the guide tube, and then the rock drilling trolley or the charging trolley controls the guide tube to align with the blast hole. After the guide tube is aligned with the blast hole, the two conveying wheels are driven to convey the push rod forward, and the push rod is led out of the winding device. The push rod automatically pushes the explosives or gun mud in the guide tube into the blast hole. After the explosives or gun mud are pushed into place, the two conveying wheels are driven to convey the push rod backward, and the winding device winds up the push rod at the same time until the push rod retreats to the rear of the guide tube, and then the explosives or gun mud can be repeatedly fed into the blast hole.

[0028] Therefore, the present application can be applied to the explosive filling and mud sealing of deeper blastholes, reducing the labor intensity of the explosive filling and mud sealing, and the top rod is longer and rolled up on the winding device, avoiding clutter on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0030] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0031] Figure 2 is a cross-sectional view of a winding device in an embodiment of the present invention;

[0032] Figure 3 is a cross-sectional view of a conveying mechanism in an embodiment of the present invention;

[0033] Figure 4 A cross-sectional view of a push-pull electromagnet in an embodiment of the present invention;

[0034] Figure 5 is a cross-sectional view of a locking member in an embodiment of the present invention;

[0035] Figure 6 It is a cross-sectional view of the telescopic structure in an embodiment of the present invention.

[0036] In the attached drawings, 100-frame; 110-guide tube; 200-reeling device; 210-reeling wheel; 220-reeling motor; 300-top rod; 400-conveying mechanism; 410-conveying wheel; 420-gear box; 421-synchronous gear; 422-guide sleeve; 430-reduction motor; 440-first bevel gear; 450-second bevel gear; 500-guide rod; 510-first spring; 600-push-pull electromagnet; 610-housing; 620-coil bracket; 630-coil winding; 640-fixed iron core ;650-moving iron core;651-pull rod;652-adjusting nut;653-fourth spring;700-locking piece;710-fixed frame;720-rotating frame;730-electric push-pull rod;740-clamping block;800-telescopic structure;810-first limit switch;820-second limit switch;830-first telescopic section;831-first limit ring;840-second telescopic section;841-second limit ring;850-third telescopic section;860-second spring;870-third spring;900-meter wheel. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0038] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0039] like Figure 1-Figure 6 As shown, an embodiment of the present invention provides a blasting hole filling device, including a frame 100, a winding device 200, a push rod 300 and a conveying mechanism 400.

[0040] A guide tube 110 is provided at the front end of the frame 100 for aligning with the blast hole.

[0041] The winding device 200 is installed at the lower part of the frame 100 , and the top rod 300 can be bent and deformed, and the top rod 300 is wound on the winding device 200 .

[0042] Reference Figure 2 The winding device 200 specifically includes a winding wheel 210 rotatably mounted on the frame 100 and a winding motor 220 for driving the winding wheel 210 to rotate forward and reversely, so that the winding motor 220 can be controlled to rotate forward and reversely to retract and release the top rod 300.

[0043] The conveying mechanism 400 is arranged at the front part of the frame 100, including a pair of conveying wheels 410 arranged on the frame 100 and a driving mechanism for driving the pair of conveying wheels 410 to rotate synchronously in opposite directions. A conveying channel located directly behind the guide tube 110 is formed between the two conveying wheels 410, and the top rod 300 is led out from the winding device 200 and passes through the conveying channel and the guide tube 110 in sequence.

[0044] Reference Figure 3 The driving mechanism specifically includes a gear box 420 and a reduction motor 430. The gear box 420 is installed on the frame 100. A pair of meshing synchronous gears 421 are rotatably installed in the gear box 420. The reduction motor 430 is installed on the back side of the gear box 420 and is transmission-connected to any synchronous gear 421. The two conveying wheels 410 are respectively arranged on the front side of the gear box 420 and are coaxially fixed on the axles of each synchronous gear 421 one by one. In this way, the two conveying wheels 410 can be driven by the reduction motor 430 to rotate synchronously in opposite directions.

[0045] Preferably, the axle of any synchronous gear 421 passes through the back side of the gear box 420 and is provided with a first bevel gear 440, the reduction motor 430 is arranged parallel to the back side of the gear box 420, and the output end of the reduction motor 430 is provided with a second bevel gear 450 meshing with the first bevel gear 440. The reduction motor 430 is arranged in a horizontal manner on the back side of the gear box 420, which can reduce the space it occupies.

[0046] The frame 100 of the present application is installed on a drilling trolley or a charging trolley, and the push rod 300 is wound on the winding device 200. When filling explosives or gun mud, the front end of the push rod 300 is first retreated to the rear of the guide tube 110, and then the explosives or gun mud are loaded into the guide tube 110, and then the guide tube 110 is controlled by the drilling trolley or the charging trolley to align with the blasthole. After the guide tube 110 is aligned with the blasthole, the two conveying wheels 410 are driven to convey the push rod 300 forward, and the push rod 300 is led out of the winding device 200. The push rod 300 automatically pushes the explosives or gun mud in the guide tube 110 into the blasthole. After the explosives or gun mud are pushed into place, the two conveying wheels 410 are driven to convey the push rod 300 backwards, and the winding device 200 winds up the push rod 300 until the push rod 300 retreats to the rear of the guide tube 110, and then the explosives or gun mud can be repeatedly fed into the blasthole.

[0047] Therefore, the present application can be applied to the explosive filling and mud sealing of deeper blastholes, reducing the labor intensity of the explosive filling and mud sealing, and the top rod 300 is relatively long and rolled up on the winding device 200, avoiding clutter on the site.

[0048] Reference Figure 1 , this embodiment also includes two guide rods 500 and a first limit switch 810.

[0049] Two guide rods 500 are respectively arranged on both sides of the gear box 420 and extend along the transmission direction of the top rod 300. The two ends of each guide rod 500 are respectively fixed to the frame 100 through a support. Both sides of the gear box 420 are respectively provided with a guide sleeve 422 that is slidably mounted on the guide rod 500 on the corresponding side. Each guide rod 500 is sleeved with a first spring 510 supported between the guide sleeve 422 and the support behind it.

[0050] The first limit switch 810 is disposed at the rear of the gear box 420 . When the first limit switch 810 is touched, the first limit switch 810 controls the reduction motor 430 to stop working.

[0051] When filling explosives or gun mud, if the push rod 300 pushes the explosives or gun mud to the bottom of the blast hole, the push rod 300 will no longer move forward, and push the conveying mechanism 400 to move backward in the opposite direction. When it touches the first limit switch 810, the conveying mechanism 400 stops conveying the reduction motor 430 forward, thus ensuring that the explosives or gun mud can be delivered to the right place.

[0052] Better yet, refer to Figure 1 This embodiment also includes a push-pull electromagnet 600, a locking member 700 and a second limit switch 820.

[0053] The push-pull electromagnet 600 is disposed behind the gear box 420 and fixed to the frame 100. The moving iron core 650 of the push-pull electromagnet 600 extends forward and is fixedly connected to the rear side of the gear box 420. Figure 4 The push-pull electromagnet 600 includes a housing 610, a coil support 620 disposed in the housing 610, a coil winding 630 surrounding the outside of the coil support 620, a fixed iron core 640 fixed to one end of the coil winding 630, and a moving iron core 650 inserted into the other end of the coil winding 630. The rear end of the moving iron core 650 is provided with a pull rod 651 extending backward out of the housing 610, and the rear end of the pull rod 651 is threadedly connected with an adjusting nut 652. When the coil winding 630 is energized, a magnetic force is generated, which drives the moving iron core 650 to move backward, thereby pulling the conveying mechanism 400 to move backward. At this time, the first spring 510 is compressed. When the coil winding 630 is de-energized, the moving iron core 650 is released, and the first spring 510 pushes the conveying mechanism 400 to move forward. By providing the adjusting nut 652, the pre-tightening degree of the first spring 510 can be adjusted by rotating the adjusting nut 652 during installation. The outer sleeve of the pull rod 651 is provided with a fourth spring 653 supported between the adjusting nut 652 and the housing 610 . When the moving iron core 650 is released, the fourth spring 653 can buffer the impact of the adjusting nut 652 .

[0054] The locking member 700 is mounted on the gear box 420, and the locking member 700 can lock or release the top rod 300. Figure 5The locking member 700 includes a fixed frame 710, a rotating frame 720 and an electric push-pull rod 730. The fixed frame 710 and the rotating frame 720 are respectively arranged on both sides of the top rod 300. One end of the fixed frame 710 is fixed to the frame 100, and one end of the rotating frame 720 is hinged to the frame 100. The opposite inner sides of the fixed frame 710 and the rotating frame 720 are respectively provided with clamping blocks 740 for clamping on both sides of the top rod 300. The two ends of the electric push-pull rod 730 are respectively hinged to the other ends of the fixed frame 710 and the rotating frame 720. When the electric push-pull rod 730 is controlled to be retracted, the electric push-pull rod 730 can tighten the rotating frame 720, so that the top rod 300 is clamped and locked between the clamping blocks 740 on both sides. When the electric push-pull rod 730 is controlled to be extended, the electric push-pull rod 730 can push the rotating frame 720 open, thereby releasing the lock on the top rod 300.

[0055] A telescopic structure 800 is provided at the rear of the gear box 420. Figure 6 The telescopic structure 800 includes a first telescopic section 830, a second telescopic section 840 and a third telescopic section 850. The second telescopic section 840 and the third telescopic section 850 are both provided with telescopic cavities. A first limiting ring 831 is provided at the front end of the first telescopic section 830. The rear end of the first telescopic section 830 is adapted to the telescopic cavity of the second telescopic section 840. A second spring 860 supported between the first limiting ring 831 and the second telescopic section 840 is provided on the outer sleeve of the first telescopic section 830. A first limit switch 810 is provided at the rear end of the telescopic cavity of the second telescopic section 840. A second limiting ring 841 is provided at the front end of the second telescopic section 840. The rear end of the second telescopic section 840 is adapted to the telescopic cavity of the third telescopic section 850. A third spring 870 supported between the second limiting ring 841 and the third telescopic section 850 is provided on the outer sleeve of the second telescopic section 840. The elastic force of the third spring 870 is greater than the elastic force of the second spring 860. The second limit switch 820 is provided at the rear end of the telescopic cavity of the third telescopic section 850.

[0056] During the process of delivering gun mud into the blast hole, when the first telescopic joint 830 touches the first limit switch 810, the reduction motor 430 is controlled to stop working, the locking piece 700 locks the push rod 300, the push-pull electromagnet 600 is energized, and the push-pull electromagnet 600 pulls the gear box 420 backward through the moving iron core 650. When the second telescopic joint 840 touches the second limit switch 820, the push-pull electromagnet 600 is controlled to be de-energized.

[0057] During the process of the conveying mechanism 400 driving the push rod 300 to push the gun mud into the blasthole, the push rod 300 pushes the explosive or gun mud to the bottom of the blasthole, and the push rod 300 no longer moves forward, but pushes the conveying mechanism 400 to move backward in the opposite direction, and the gear box 420 first pushes the first telescopic section 830, and the first telescopic section 830 contracts relative to the second telescopic section 840 and touches the first limit switch 810 in the second telescopic section 840. During this process, the first spring 510 is compressed, and after the control module receives the signal from the first limit switch 810, it controls the reduction motor 430 to stop working, and the locking member 700 locks the push rod 300, and the push-pull electromagnet 600 is energized, and the push-pull electromagnet 600 pulls the gear box 420 to move backward through the moving iron core 650. At this time, the second telescopic joint 840 contracts relative to the third telescopic joint 850 and touches the second limit switch 820 in the third telescopic joint 850. In this process, the first spring 510 is further compressed. After the control module receives the signal from the second limit switch 820, it controls the push-pull electromagnet 600 to cut off the power, and the moving iron core 650 is released. The first spring 510 pushes the gear box 420 to slide forward, thereby driving the push rod 300 inserted into the blast hole to impact the gun mud filled in the blast hole, and then controls the push-pull electromagnet 600 to repeatedly turn on and off the power several times, so as to compact the gun mud filled in the blast hole and ensure the filling quality of the gun mud. After the gun mud is compacted, the locking piece 700 is controlled to loosen the push rod 300, and the conveying mechanism 400 drives the push rod 300 to withdraw from the blast hole.

[0058] In this embodiment, refer to Figure 1 The frame 100 is provided with a meter wheel 900 for measuring the length of the push rod 300 sent into the blast hole. In this way, the meter wheel 900 can be used to feedback the depth of the explosives and gun mud filled into the blast hole, which is convenient for recording the positions of the explosives and gun mud filled in the blast hole and facilitating manual verification.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A blast hole filling device, characterized in that: include: A frame, wherein the front end of the frame is provided with a guide tube for aligning with the blast hole; A winding device, the winding device is installed at the lower part of the frame; A push rod, the push rod can be bent and deformed, and the push rod is rolled up on the winding device; A conveying mechanism is arranged at the front part of the frame, comprising a pair of conveying wheels arranged on the frame and a driving mechanism for driving the pair of conveying wheels to rotate synchronously in opposite directions, a conveying channel located directly behind the guide tube is formed between the two conveying wheels, and the push rod is led out from the winding device and passes through the conveying channel and the guide tube in sequence.

2. The blasting hole filling device according to claim 1, characterized in that: The winding device comprises a winding wheel rotatably mounted on the frame and a winding motor for driving the winding wheel to rotate forward and reversely.

3. The blasting hole filling device according to claim 1, characterized in that: The driving mechanism includes a gear box and a reduction motor, the gear box is installed on the frame, a pair of meshing synchronous gears are rotatably installed in the gear box, the reduction motor is installed on the back side of the gear box and is transmission-connected to any of the synchronous gears, and the two conveying wheels are respectively arranged on the front side of the gear box and are coaxially fixed on the axles of each synchronous gear one by one.

4. The blasting hole filling device according to claim 3, characterized in that: Also included are two guide rods and a first limit switch; The two guide rods are respectively arranged on both sides of the gear box and extend along the transmission direction of the push rod. Both ends of each guide rod are respectively fixed to the frame through a support. Both sides of the gear box are respectively provided with guide sleeves slidably sleeved on the guide rods on the corresponding sides. Each guide rod is sleeved with a first spring supported between the guide sleeve and the support behind it. The first limit switch is arranged at the rear of the gear box. When the first limit switch is touched, the first limit switch controls the reduction motor to stop working.

5. The blasting hole filling device according to claim 4, characterized in that: It also includes a push-pull electromagnet, a locking member, and a second limit switch; The push-pull electromagnet is arranged at the rear of the gear box and fixed on the frame, and the moving iron core of the push-pull electromagnet extends forward and is fixedly connected to the rear side of the gear box; The locking member is installed on the gear box, and the locking member can lock or loosen the push rod; A telescopic structure is provided at the rear of the gear box, and the telescopic structure includes a first telescopic section, a second telescopic section and a third telescopic section, and telescopic chambers are provided in the second telescopic section and the third telescopic section, a first limiting ring is provided at the front end of the first telescopic section, and a rear end of the first telescopic section is adapted to the telescopic chamber of the second telescopic section, a second spring supported between the first limiting ring and the second telescopic section is provided on the outer sleeve of the first telescopic section, a first limit switch is provided at the rear end of the telescopic chamber of the second telescopic section, a second limiting ring is provided at the front end of the second telescopic section, and the rear end of the second telescopic section is adapted to the telescopic chamber of the third telescopic section, a third spring supported between the second limiting ring and the third telescopic section is provided on the outer sleeve of the second telescopic section, and the elastic force of the third spring is greater than the elastic force of the second spring, and the second limit switch is provided at the rear end of the telescopic chamber of the third telescopic section; During the process of delivering gun mud into the blast hole, when the first telescopic joint touches the first limit switch, the reduction motor is controlled to stop working, the locking piece locks the push rod, the push-pull electromagnet is energized, and the push-pull electromagnet pulls the gear box backward through the moving iron core. When the second telescopic joint touches the second limit switch, the push-pull electromagnet is controlled to be de-energized.

6. The blasting hole filling device according to claim 5, characterized in that: The push-pull electromagnet includes a shell, a coil bracket arranged in the shell, a coil winding wrapped around the outside of the coil bracket, a fixed iron core fixed to one end of the coil winding, and a moving iron core inserted into the other end of the coil winding. The rear end of the moving iron core is provided with a pull rod extending backward out of the shell, and the rear end of the pull rod is threadedly connected with an adjusting nut.

7. The blasting hole filling device according to claim 6, characterized in that: The pull rod outer sleeve is provided with a fourth spring supported between the adjusting nut and the outer shell.

8. The blasting hole filling device according to claim 5, characterized in that: The locking member includes a fixed frame, a rotating frame and an electric push-pull rod. The fixed frame and the rotating frame are respectively arranged on both sides of the top rod, one end of the fixed frame is fixed to the frame, and one end of the rotating frame is hinged to the frame. The relative inner sides of the fixed frame and the rotating frame are provided with clamping blocks respectively used to clamp on both sides of the top rod, and the two ends of the electric push-pull rod are respectively hinged to the other ends of the fixed frame and the rotating frame.

9. The blasting hole filling device according to claim 3, characterized in that: The axle of any of the synchronous gears passes through the back side of the gear box and is provided with a first bevel gear. The reduction motor is arranged parallel to the back side of the gear box, and the output end of the reduction motor is provided with a second bevel gear meshing with the first bevel gear.

10. The blasting hole filling device according to claim 1, characterized in that: The frame is provided with a meter wheel for measuring the length of the push rod sent into the blast hole.

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