Rapid charging device for tunnel blasting

Abstract

The utility model provides a fast charging device for tunnel blasting, which comprises an explosive conveying pipe, a driving component and a guide component, the driving component is provided with a conveying channel for accommodating explosive, and the explosive conveying pipe is inserted into a blast hole; the driving assembly is connected to the explosive conveying pipe and used for conveying the explosive conveying pipe into the blast hole. The guiding assembly comprises a guiding cylinder with a guiding channel and a rolling mechanism arranged in the guiding cylinder, the rolling mechanism comprises a support arranged in the guiding channel and a guiding wheel rotationally connected to the support, the axis of the guiding wheel is parallel to the axis of the guiding channel, the support is connected to the guiding cylinder, and the medicine conveying pipe is inserted into the guiding channel. And the guide wheel contacts with the outer peripheral surface of the guide wheel. The utility model provides a quick charging device for tunnel blasting, and aims to solve the problems that the bottom of a blast hole is not filled with explosives and the middle of the blast hole is blocked due to poor flowability of emulsion explosives and large friction force between the emulsion explosives and the wall of the blast hole in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel blasting engineering, and more specifically relates to a fast charging device for tunnel blasting. Background Art

[0002] In engineering projects, tunnel blasting requires that a flat and smooth crack surface can be formed in a predetermined direction. It is not only required to transport the blasted rock out of the tunnel, but also to ensure that the surrounding rock around the tunnel is not damaged by the explosion.

[0003] The commonly used blasting technologies in the past mainly include smooth blasting technology, directional fracture controlled blasting technology and wall protection blasting technology. Among them, the smooth blasting technology uses the guiding effect of space to achieve rock cracking between blast holes. The blasting effect is closely related to the filling method and filling equipment.

[0004] Traditional medicine filling methods include continuous filling and indirect filling. Indirect filling is to bundle medicine rolls on bamboo strips, which is relatively complicated to make and place, and is not conducive to accurate quantification and standardization of medicine filling, so it is not described in detail in this application.

[0005] Continuous charging is to continuously fill strips of emulsion explosives into the blasthole. This method cannot dynamically fill according to the characteristics of the surrounding rock, which can easily cause over-excavation and under-excavation, increasing production costs. In addition, due to the poor fluidity of emulsion explosives, after filling into the blasthole, on the one hand, due to the fluidity problem, the bottom of the blasthole is not filled with explosives and the middle is blocked, resulting in a "lack of explosives" phenomenon, resulting in the filling quantity failing to meet the relevant standards and thus resulting in under-excavation; at the same time, since the continuous charging in the prior art is to directly fill the emulsion explosive strips into the blasthole continuously, when the under-charge phenomenon occurs, it will also affect the determination of the charging amount, resulting in a change in the corresponding relationship between the blasting result and the actual charging amount. Utility Model Content

[0006] The utility model aims to provide a fast charging device for tunnel blasting, aiming to solve the problem in the prior art that the emulsion explosive has poor fluidity and large friction with the blast hole wall, resulting in the bottom of the blast hole not being filled with explosives and the middle being blocked.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A fast charging device for tunnel blasting is provided, comprising:

[0009] A delivery tube, having a delivery channel for accommodating explosives, and the delivery tube is inserted into the blast hole;

[0010] A driving assembly connected to the drug delivery tube and used to deliver the drug delivery tube into the blast hole; and

[0011] The guide assembly comprises a guide cylinder having a guide channel and a rolling mechanism arranged in the guide cylinder, the rolling mechanism comprises a bracket arranged in the guide channel and a guide wheel rotatably connected to the bracket, the axis of the guide wheel is parallel to the axis of the guide channel, the bracket is connected to the guide cylinder, the drug delivery tube is inserted in the guide channel and contacts with the outer peripheral surface of the guide wheel.

[0012] In a possible implementation, the driving component includes:

[0013] A slide rail, arranged outside the drug delivery tube and extending along the axis of the drug delivery tube;

[0014] A mounting frame, slidably connected to the slide rail, and the guide cylinder is connected to the mounting frame; and

[0015] A driving member is connected to the mounting frame and is used to drive the mounting frame to slide along the slide rail.

[0016] In a possible implementation, the driving member is a telescopic driver, a telescopic end of the driving member is connected to the mounting frame, and a fixed end is connected to the workbench.

[0017] In a possible implementation, the driving member includes:

[0018] A screw rod is arranged parallel to one side of the slide rail, and the mounting bracket is threadedly connected to the outside of the screw rod; and

[0019] The first driver is connected to the screw rod and is used for driving the screw rod to rotate around its own axis.

[0020] In one possible implementation, the rolling mechanism is provided in plurality, the outer peripheral surfaces of the plurality of guide wheels are in contact with the drug delivery tube, and at least one group of the rolling mechanisms further includes a second driver mounted on the bracket, and the second driver controls the guide wheel to rotate around its own axis.

[0021] In a possible implementation, the rolling mechanism further includes an anti-slip sleeve sleeved outside the guide wheel, and the anti-slip sleeve is in contact with the drug delivery tube.

[0022] In a possible implementation, a limiting groove is provided on the outer circumferential surface of the guide wheel along the circumferential direction, the limiting groove is adapted to the outer circumferential surface of the drug delivery tube, and the outer circumferential surface of the drug delivery tube is attached to the limiting groove.

[0023] In a possible implementation, the rapid charging device for tunnel blasting also includes a drug feed connector connected to the drug feed end of the drug delivery tube, a feed channel is provided in the drug feed connector, the axis of the feed channel is parallel to the axis of the drug delivery tube, and the cross-section of the feed channel is larger than the cross-section of the drug delivery tube.

[0024] In a possible implementation, one end of the drug feed connector is connected to the drug delivery tube, and the other end is connected to an annular airbag, and the airbag is located in the feed channel.

[0025] In one possible implementation, the feed channel includes a drug feeding area, a transition area and a guide area distributed in sequence along the drug feeding direction, the diameter of the drug feeding area is larger than the diameter of the guide area, the diameter of the guide area is consistent with the diameter of the drug delivery tube, one end of the transition area is connected to the drug feeding area, and the other end is connected to the guide area.

[0026] The utility model provides a quick charging device for tunnel blasting with the beneficial effect that: compared with the prior art, the utility model inserts the delivery tube into the guide channel, and the outer peripheral surface of the delivery tube contacts the guide wheel. The driving component sends the delivery tube into the blast hole, and the delivery tube moves along the guide channel during the process of entering the blast hole, and generates rolling friction with the guide wheel. On the one hand, the guide wheel can limit the moving path of the delivery tube to ensure that the delivery tube enters the blast hole smoothly; on the other hand, as the delivery tube moves, the guide wheel rotates under the action of friction, and the rolling friction is less than the sliding friction, avoiding wear of the delivery tube. The utility model sends the delivery tube into the blast hole through the cooperation of the driving component and the guide component, and the explosive is inserted from the end of the delivery tube. The explosive can be moved along the delivery tube by airflow or push rod, so that it can be discharged smoothly from the other end of the delivery tube and enter the designated position in the blast hole. Since the inner wall of the delivery tube is smooth, the friction exerted on the explosives can be reduced during the delivery process, which not only ensures that the explosives reach the designated position smoothly, but also reduces the risk of accidental explosion due to friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of a rapid charging device for tunnel blasting provided by an embodiment of the utility model;

[0029] Figure 2 A schematic diagram of the structure of a rapid charging device for tunnel blasting provided by another embodiment of the utility model;

[0030] Figure 3 A schematic diagram of the structure of the guide assembly used in the embodiment of the utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the drug inlet connector used in the embodiment of the utility model;

[0032] Figure 5 This is a cross-sectional view of the drug inlet connector used in an embodiment of the present utility model.

[0033] In the figure: 1. drug delivery tube; 2. drive assembly; 201. drive member; 2011. first driver; 2012. screw; 202. slide rail; 203. mounting frame; 3. guide assembly; 301. guide cylinder; 3011. guide channel; 302. rolling mechanism; 3021. bracket; 3022. guide wheel; 3022-1. limit groove; 3023. second driver; 4. drug feed connector; 401. feed channel; 4011. drug feed area; 4012. transition area; 4013. guide area; 5. airbag. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, the terms "first", "second" or "third" are used to distinguish different objects, rather than to describe a specific order. Unless otherwise specified, other directional words, such as "vertical", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so it cannot be understood as limiting the specific protection scope of the present utility model. In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, the terms "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements. In the claims, specification and the above drawings of the present utility model, the terms "including", "having" and their variations are used, and the intention is to "include but not limited to".

[0036] Please also read Figures 1 to 5 Now, the fast charging device for tunnel blasting provided by the utility model is described. The fast charging device for tunnel blasting comprises a delivery tube 1, a driving assembly 2 and a guiding assembly 3. The delivery tube 1 has a delivery channel for accommodating explosives, and the delivery tube 1 is inserted into a blasthole; the driving assembly 2 is connected to the delivery tube 1, and is used to deliver the delivery tube 1 into the blasthole; the guiding assembly 3 comprises a guide cylinder 301 having a guide channel 3011 and a rolling mechanism 302 arranged in the guide cylinder 301, and the rolling mechanism 302 comprises a bracket 3021 arranged in the guide channel 3011 and a guide wheel 3022 rotatably connected to the bracket 3021, the axis of the guide wheel 3022 is parallel to the axis of the guide channel 3011, the bracket 3021 is connected to the guide cylinder 301, the delivery tube 1 is inserted in the guide channel 3011, and contacts the outer peripheral surface of the guide wheel 3022.

[0037] Compared with the prior art, the fast charging device for tunnel blasting provided by the utility model inserts the drug delivery tube 1 into the guide channel 3011, and the outer peripheral surface of the drug delivery tube 1 contacts the guide wheel 3022. The driving component 2 delivers the drug delivery tube 1 into the blast hole. In the process of entering the blast hole, the drug delivery tube 1 moves along the guide channel 3011 and generates rolling friction with the guide wheel 3022. On the one hand, the guide wheel 3022 can limit the moving path of the drug delivery tube 1 to ensure that the drug delivery tube 1 enters the blast hole smoothly; on the other hand, as the drug delivery tube 1 moves, the guide wheel 3022 rotates under the action of friction, and the rolling friction is less than the sliding friction, thereby avoiding the wear of the drug delivery tube 1. The utility model delivers the medicine delivery tube 1 into the blast hole through the cooperation of the driving component 2 and the guiding component 3, and the explosive is inserted from the end of the medicine delivery tube 1. The explosive can be moved along the medicine delivery tube 1 by airflow or by pushing of a push rod, so as to be smoothly discharged from the other end of the medicine delivery tube 1 and enter the designated position in the blast hole. Since the inner wall of the medicine delivery tube 1 is smooth, the friction force on the explosive can be reduced during the medicine delivery process, which can not only ensure that the explosive reaches the designated position smoothly, but also reduce the risk of accidental explosion caused by friction.

[0038] In some embodiments, see Figures 1 to 5 The driving assembly 2 includes a slide rail 202, a mounting frame 203 and a driving member 201. The slide rail 202 is arranged on the outside of the drug delivery tube 1 and extends along the axis of the drug delivery tube 1; the mounting frame 203 is slidably connected to the slide rail 202, and the guide cylinder 301 is connected to the mounting frame 203; the driving member 201 is connected to the mounting frame 203, and is used to drive the mounting frame 203 to slide along the slide rail 202.

[0039] The driving member 201 drives the mounting frame 203 to slide along the slide rail 202, and the guide cylinder 301 connected to the mounting frame 203 moves synchronously, thereby delivering the drug delivery tube 1 inserted in the guide channel 3011 into the blast hole. In this embodiment, the drug delivery tube 1 can be moved without manually pushing the mounting frame 203, and the mounting frame 203 moves along the slide rail 202, thereby limiting the moving path of the drug delivery tube 1 and ensuring that the drug delivery tube 1 enters the blast hole smoothly.

[0040] Optionally, the drive assembly 2 can be mounted on a workbench, such as a workbench of a drilling machine frame or a workbench of an engineering vehicle.

[0041] In some embodiments, see Figure 2 The driving member 201 is a telescopic driver, the telescopic end of the driving member 201 is connected to the mounting frame 203, and the fixed end is connected to the workbench.

[0042] The driving member 201 extends to push the mounting frame 203 to move, thereby delivering the delivery tube 1 into the blast hole. After the explosive enters the blast hole from the delivery tube 1, the driver retracts and resets, and the delivery tube 1 withdraws from the blast hole. This embodiment is simple, and the mounting frame 203 can be moved along the slide rail 202 by extending and retracting the driving member 201.

[0043] Optionally, the driving member 201 is a hydraulic telescopic member or a pneumatic telescopic member.

[0044] In some embodiments, see Figure 1 The driving member 201 includes a screw rod 2012 and a first driver 2011. The screw rod 2012 is arranged parallel to one side of the slide rail 202, and the mounting frame 203 is threadedly connected to the outside of the screw rod 2012; the first driver 2011 is connected to the screw rod 2012 and is used to drive the screw rod 2012 to rotate around its own axis.

[0045] The first driver 2011 controls the screw 2012 to rotate around its own axis. Since the mounting frame 203 is slidably connected to the slide rail 202, it cannot rotate with the screw 2012. Under the rotation of the screw 2012, the mounting frame 203 moves along the axis of the screw 2012 (the slide rail 202 is parallel to the screw 2012), so that the guide cylinder 301 connected to the mounting frame 203 moves along the slide rail 202, and the conveying pipeline inserted in the guide channel 3011 moves synchronously. This embodiment converts the circumferential motion of the screw 2012 into the linear motion of the mounting frame 203, which can more accurately control the moving speed and distance of the mounting frame 203, avoid the conveying medicine tube 1 from moving too fast and interfering with the blast hole, and ensure the stability of the conveying medicine tube 1 during movement.

[0046] Optionally, the first driver 2011 is a motor.

[0047] In some embodiments, see Figure 3 The rolling mechanism 302 is provided with a plurality of guide wheels 3022, the outer peripheral surfaces of which are in contact with the drug delivery tube 1. At least one group of the rolling mechanisms 302 further includes a second driver 3023 mounted on the bracket 3021, and the second driver 3023 controls the guide wheel 3022 to rotate around its own axis.

[0048] This embodiment increases the contact area between the guide wheel 3022 and the drug delivery tube 1, and can more stably guide the drug delivery tube 1. In addition, after the driving assembly 2 delivers the drug delivery tube 1 into the blast hole, if the drug delivery tube 1 has not reached the specified position in the blast hole, the second driver 3023 can be used to control the guide wheel 3022 to rotate, and the guide wheel 3022 drives the drug delivery tube 1 to move, so as to further deliver the drug delivery tube 1 to the depth of the blast hole.

[0049] In some embodiments, not shown in the figure, the rolling mechanism 302 further includes an anti-slip sleeve sleeved outside the guide wheel 3022 , and the anti-slip sleeve is in contact with the drug delivery tube 1 .

[0050] The anti-slip sleeve can increase the friction with the medicine delivery tube 1 to avoid slipping between the guide wheel 3022 and the medicine delivery tube 1 , thereby ensuring that the medicine delivery tube 1 can enter the blast hole under the action of the guide wheel 3022 .

[0051] Optionally, the anti-slip sleeve is a rubber component.

[0052] In some embodiments, see Figure 3 The outer circumferential surface of the guide wheel 3022 is provided with a limiting groove 3022-1 along the circumferential direction, the limiting groove 3022-1 is adapted to the outer circumferential surface of the drug delivery tube 1, and the outer circumferential surface of the drug delivery tube 1 is attached to the limiting groove 3022-1.

[0053] The limiting groove 3022-1 can limit the circumferential position of the drug delivery tube 1 to prevent the drug delivery tube 1 from rotating circumferentially during movement, thereby ensuring the stability of the drug delivery tube 1 during movement.

[0054] In some embodiments, see Figures 4 to 5 The rapid charging device for tunnel blasting also includes a drug feed connector 4 connected to the drug feed end of the drug delivery tube 1, and a feed channel 401 is provided in the drug feed connector 4. The axis of the feed channel 401 is parallel to the axis of the drug delivery tube 1, and the cross-section of the feed channel 401 is larger than the cross-section of the drug delivery tube 1.

[0055] One end of the medicine feed connector 4 is connected to the medicine delivery tube 1, and the explosive can be put in from the other end of the medicine feed connector 4. After the medicine delivery tube 1 enters the blast hole, the explosive can be discharged from the medicine delivery tube 1 into the blast hole by blowing air into the free end of the medicine feed connector 4 or inserting the medicine delivery tube 1 through a medicine push rod. Of course, the explosive can also be put in from the tail end of the medicine delivery tube 1 before the medicine delivery tube 1 enters the blast hole, and the medicine delivery tube 1 can enter the blast hole at any time, and then the air pipe or the medicine push rod is connected to the medicine feed connector 4, and the explosive can be discharged from the medicine delivery tube 1 by blowing air into the medicine delivery tube 1, or the explosive can be pushed out of the medicine delivery tube 1 by the medicine push rod.

[0056] In some embodiments, see Figure 5 One end of the drug feed connector 4 is connected to the drug delivery tube 1 , and the other end is connected to a ring-shaped airbag 5 , which is located in the feed channel 401 .

[0057] The explosive is put into the medicine delivery tube 1. After the medicine delivery tube 1 enters the blast hole, the air pipe is inserted into the medicine feed connector 4, and then the air bag 5 is inflated. The air bag 5 expands to wrap the air pipe, and the air bag 5 closes the gap between the air pipe and the medicine feed connector 4 to avoid air leakage when blowing air into the medicine delivery tube 1. The air is blown into the medicine delivery tube 1 through the air pipe, and the explosive is discharged from the medicine delivery tube 1 under the action of the air flow.

[0058] In some embodiments, see Figure 5 The feed channel 401 includes a drug feeding area 4011, a transition area 4012 and a guide area 4013 which are sequentially distributed along the drug feeding direction. The diameter of the drug feeding area 4011 is larger than the diameter of the guide area 4013. The diameter of the guide area 4013 is consistent with the diameter of the drug delivery tube 1. One end of the transition area 4012 is connected to the drug feeding area 4011, and the other end is connected to the guide area 4013.

[0059] The diameter of the medicine feed area 4011 is the largest, which is not only convenient for placing explosives into the medicine delivery tube 1, but also convenient for air flow to enter the medicine feed channel when inflating. As the diameter of the channel decreases gradually, the flow rate of the air flow increases, which can speed up the discharge of explosives from the medicine delivery tube 1.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rapid charging device for tunnel blasting, characterized in that: include: A delivery tube, having a delivery channel for accommodating explosives, and the delivery tube is inserted into the blast hole; A driving assembly connected to the drug delivery tube and used to deliver the drug delivery tube into the blast hole; and The guide assembly comprises a guide cylinder having a guide channel and a rolling mechanism arranged in the guide cylinder, the rolling mechanism comprises a bracket arranged in the guide channel and a guide wheel rotatably connected to the bracket, the axis of the guide wheel is parallel to the axis of the guide channel, the bracket is connected to the guide cylinder, the drug delivery tube is inserted in the guide channel and contacts with the outer peripheral surface of the guide wheel.

2. The rapid charging device for tunnel blasting according to claim 1, characterized in that: The drive assembly comprises: A slide rail, arranged outside the drug delivery tube and extending along the axis of the drug delivery tube; A mounting frame, slidably connected to the slide rail, and the guide cylinder is connected to the mounting frame; and A driving member is connected to the mounting frame and is used to drive the mounting frame to slide along the slide rail.

3. The rapid charging device for tunnel blasting according to claim 2, characterized in that: The driving member is a telescopic driver, the telescopic end of the driving member is connected to the mounting frame, and the fixed end is connected to the workbench.

4. The rapid charging device for tunnel blasting according to claim 2, characterized in that: The driving member comprises: A screw rod is arranged parallel to one side of the slide rail, and the mounting bracket is threadedly connected to the outside of the screw rod; and The first driver is connected to the screw rod and is used for driving the screw rod to rotate around its own axis.

5. The rapid charging device for tunnel blasting according to claim 1, characterized in that: The rolling mechanism is provided in plurality, and the outer peripheral surfaces of the plurality of guide wheels are in contact with the drug delivery tube. At least one group of the rolling mechanisms further includes a second driver installed on the bracket, and the second driver controls the guide wheel to rotate around its own axis.

6. The rapid charging device for tunnel blasting according to claim 5, characterized in that: The rolling mechanism further comprises an anti-skid sleeve sleeved outside the guide wheel, and the anti-skid sleeve is in contact with the drug delivery tube.

7. The rapid charging device for tunnel blasting according to claim 1, characterized in that: The outer circumferential surface of the guide wheel is provided with a limiting groove along the circumferential direction, the limiting groove is adapted to the outer circumferential surface of the drug delivery tube, and the outer circumferential surface of the drug delivery tube is fitted to the limiting groove.

8. The rapid charging device for tunnel blasting according to claim 1, characterized in that: The rapid charging device for tunnel blasting also includes a drug feed connector connected to the drug feed end of the drug delivery tube, a feed channel is provided in the drug feed connector, the axis of the feed channel is parallel to the axis of the drug delivery tube, and the cross section of the feed channel is larger than the cross section of the drug delivery tube.

9. The rapid charging device for tunnel blasting according to claim 8, characterized in that: One end of the drug feed connector is connected to the drug delivery tube, and the other end is connected to an annular air bag, and the air bag is located in the feed channel.

10. The rapid charging device for tunnel blasting according to claim 8, characterized in that: The feed channel includes a drug feeding area, a transition area and a guide area distributed in sequence along the drug feeding direction. The diameter of the drug feeding area is larger than the diameter of the guide area. The diameter of the guide area is consistent with the diameter of the drug delivery tube. One end of the transition area is connected to the drug feeding area, and the other end is connected to the guide area.

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