Hose loop type automatic explosive charging device for open blasting mixed explosive charging

Abstract

The invention discloses an open blasting mixed loading explosive hose loop type automatic loading device, which belongs to the technical field of open blasting automation equipment, and comprises a hole site alignment mechanism fixed at the tail end of a bearing chassis, and the hole site alignment mechanism consists of a supporting back plate, a transverse guide beam and a transverse moving guide block; the hollow base beam is arranged in the axial direction of the chassis, and a moving assembly with a guide roller is arranged in the hollow base beam; the flexible output hose penetrates through the transverse moving guide block, enters the base beam and bypasses the guide roller, and a U-shaped loop with the variable length is formed. The technical problems that the manual hole aligning efficiency is low, the hose is exposed and is prone to winding and damage, and the winding and unwinding precision is difficult to control are solved, and the automation degree and the system stability of explosive charging operation are remarkably improved through mechanical adjustment and built-in loop management.

Description

Technical Field

[0001] This invention belongs to the field of open-pit blasting automation equipment technology, specifically relating to an open-pit blasting mixed explosive hose loop automatic charging device. Background Technology

[0002] In open-pit blasting, mixed explosives trucks are core equipment for achieving efficient on-site preparation and automated loading of explosives. These vehicles typically consist of a cab and a chassis connected to the rear. The chassis houses a longitudinally arranged tank body for storing the oil-based and water-based mixture of emulsion explosives, which is then transported to the operational terminal via dedicated pipelines. With the advancement of smart mine construction, blasting operations place higher demands on the mechanization and automation of the loading process. This requires not only equipment capable of on-site material mixing but also precise borehole alignment and automated management of the loading hoses to adapt to complex and varied mine terrain and the needs of blasting holes at different depths.

[0003] Existing charging technologies still have significant limitations in practical applications. First, the precise alignment of the charging hose with the blast hole often lacks an effective mechanical adjustment mechanism, leading to reliance on manual traction or repeated fine-tuning by the vehicle. This not only results in low operational efficiency but also makes it difficult to ensure the hose enters the hole center vertically. Second, the storage and management of long-distance flexible output hoses is a major technical challenge in the industry. If the hose is exposed and suspended outside the vehicle for extended periods, it is highly susceptible to entanglement, breakage, or environmental damage due to the harsh mining environment. Furthermore, existing hose deployment and retraction devices often struggle to balance space utilization with control precision. Within the limited chassis space, there is a lack of mechanical structures capable of achieving a wide range of hose loop adjustments and maintaining linear, stable output. This directly limits the precise control of the charging depth and the automation and continuity of the operation. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an automatic charging device for open-air blasting mixed explosives with a flexible hose loop, which solves the technical problems of low efficiency of manual hole setting and easy entanglement and damage of exposed hoses in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention includes a hole alignment mechanism, a hollow base beam, a moving component, and a flexible output hose. The hole alignment mechanism is installed at the rear end of the frame of a mixed explosives vehicle. The hole alignment mechanism includes a support back plate, a transverse guide beam, and a transverse guide block. The transverse guide beam is movable along the extension direction of the frame on the support back plate, and the transverse guide block is transversely moved on the transverse guide beam. The hollow base beam is located on the upper side of the frame. Inside the hollow base beam is a moving component that moves horizontally along the axial direction of the hollow base beam. A guide roller is rotatably connected to the moving component. The input end of the flexible output hose is connected to the explosives production source. The flexible output hose passes sequentially through the transverse guide block into the hollow base beam, and bypasses the guide roller to form a variable-length U-shaped loop. Finally, it extends vertically from the output position below the transverse guide block. The external overhang length of the flexible output hose is adjusted by the axial displacement of the moving component within the hollow base beam.

[0006] Optionally, a telescopic drive cylinder is fixed to the rear end of the support back plate. The piston end of the telescopic drive cylinder passes horizontally through the support back plate and is fixedly connected to the middle of the transverse guide beam. Two horizontal sliding rods are symmetrically fixed at both ends of the transverse guide beam, and the two horizontal sliding rods slide horizontally through both ends of the support back plate.

[0007] Optionally, a strip-shaped through slot extending along the length of the transverse guide beam is formed through the transverse guide beam. A transmission screw driven by a motor is rotatably installed in the strip-shaped through slot. The transmission screw is arranged parallel to the extension direction of the transverse guide beam and passes through the transverse guide block, and is used to drive the transverse guide block to perform left and right transverse displacement adjustment on the transverse guide beam.

[0008] Optionally, the inner walls of both sides of the strip groove are provided with limiting grooves extending laterally, and the two ends of the side wall of the transverse guide block are provided with sliding flanges, which are embedded in the limiting grooves.

[0009] Optionally, the hollow base beam has two parallel guide rails extending along the direction of the hollow base beam in the middle of its inner bottom surface. The moving component includes two walking supports, each of which is movably mounted on one of the two guide rails. A fixed coupling shaft connects the two walking supports, and the guide roller is coaxially rotatably mounted on the fixed coupling shaft.

[0010] Optionally, a drive shaft is rotatably connected between the two traveling supports. The outer end of the drive shaft is provided with a worm gear reduction mechanism driven by a motor. The drive shaft is provided with two drive gears. The top side of the guide rail is constructed as a rack structure. The two drive gears mesh with the top rack structures of the two guide rails respectively.

[0011] Optionally, it also includes a tank body mounted on the chassis and a sensitizer storage tank mounted at the rear end of the tank body. The rear end of the tank body is provided with a main discharge pipe for discharging base material, and the lower end of the sensitizer storage tank is provided with a sensitizer output branch pipe. Both the main discharge pipe and the sensitizer output branch pipe are connected to the flexible output hose.

[0012] Optionally, a mixing cylinder is also included. The mixing cylinder is located above the rear end of the hollow base beam. The mixing cylinder has a horizontal cylindrical structure. The main discharge pipe and the sensitizer output branch pipe are both connected to the front end of the mixing cylinder. A stirring main shaft is transversely installed inside the mixing cylinder. A spiral blade is fixedly installed on the stirring main shaft. The spiral blade is spirally wound around the surface of the stirring main shaft. The rear end of the mixing cylinder is provided with an explosive discharge port connected to the flexible output hose.

[0013] Optionally, an upper vertical through hole is provided through the transverse guide block, and a base module is connected to the lower part of the transverse guide block via a connecting frame. A lower vertical through hole is provided on the base module, which is coaxially arranged with the upper vertical through hole. A hole block is fixedly provided at the middle of the front end of the hollow base beam, and two guide holes are provided on the hole block at the top and bottom for the flexible output hose to pass through.

[0014] Optionally, the base module has two friction drive shafts that mesh with a gear transmission pair inside. Each friction drive shaft is coaxially equipped with a flexible pressing wheel. The two flexible pressing wheels protrude from the lower vertical through hole and press against the walls of both sides of the flexible output hose. The end of the flexible output hose is provided with a terminal counterweight for guiding its lowering.

[0015] The beneficial effects of this invention are as follows: By setting a hole alignment mechanism including a transverse guide beam and a transverse guide block at the rear end of the chassis, the device can achieve precise translation of the flexible output hose in the lateral dimension. Compared with the traditional manual dragging of the hose to align the hole, this mechanized positioning method greatly improves the loading efficiency, reduces the labor intensity of operators, and ensures that the output end of the hose can be accurately suspended directly above the blast hole. The hollow base beam and the moving component with guide rollers, together with the flexible output hose, form a variable-length "U-shaped" loop. Most of the hose is stored in the hollow base beam inside the vehicle body, effectively avoiding entanglement, wear, or damage caused by long-distance hose exposure outside the vehicle due to environmental interference. The axial displacement of the moving component within the base beam adjusts the loop length, achieving linear and stable control of the hose during lowering and retrieval, effectively solving the technical pain points of uneven hose deployment and tangling during deep-hole loading. The device utilizes the hollow base beam arranged along the chassis axis as the core guiding space, making full use of the chassis structure of the mixed explosives vehicle, making the entire automatic loading system compact and stable in center of gravity. This integrated design not only improves the equipment's maneuverability in complex mine conditions, but also lays a solid mechanical foundation for the subsequent realization of fully automated loading.

[0016] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 A schematic diagram of the overall structure of the mixed explosives loading vehicle according to an embodiment of the invention; Figure 2 A schematic diagram of the hole alignment mechanism of this invention is provided. Figure 3 Detailed internal view of the empty frame in this embodiment of the invention; Figure 4 A schematic diagram of the internal structure of the mobile component according to an embodiment of the invention; Figure 5 A schematic diagram of the mixing cylinder and transverse guide block structure of this invention embodiment; Figure 6 for Figure 5 Sectional view at point AA; The attached diagram is labeled as follows: 1. Tank body; 4. Main discharge pipe; 43. Flexible output hose; 431. Terminal counterweight; 6. Sensitizer storage tank; 61. Sensitizer output branch pipe; 7. Mixing cylinder; 71. Stirring shaft; 72. Spiral blade; 73. Explosive discharge port; 81. Support back plate; 82. Transverse guide beam; 821. Strip groove; 822. Limiting slide groove; 83. Telescopic drive cylinder; 84. Horizontal slide bar; 85. Transverse guide block; 851. Sliding... 852. Flange; 86. Upper vertical through hole; 87. Drive screw; 88. Base module; 89. Lower vertical through hole; 80. Friction drive shaft; 81. Gear drive pair; 82. Flexible clamping wheel; 83. Connecting frame; 94. Hollow base beam; 95. Guide rail; 92. Traveling support; 92. Fixed coupling; 92. Guide roller; 92. Drive shaft; 92. Drive gear; 92. Worm gear reduction mechanism; 93. Hole block. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0019] Please refer to the figures. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0020] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0021] This invention provides an automatic charging device for open-air blasting mixed explosives using a flexible tubing loop, such as... Figure 1 , Figure 2 , Figure 3As shown, it is mainly built on a mixed explosives vehicle, with a frame connected to the rear end of the vehicle. On the frame, a tank body 1 is arranged along the length of the frame. The tank body 1 has a longitudinally extending tank structure, and its internal space is used to store the oil-based and water-based mixture of emulsion explosives. At the rear end of the tank body 1, a discharge pipe 4 is connected, which communicates with the interior of the tank body 1 to discharge the mixture to the rear. At the rear end of the tank body 1, a sensitizer storage tank 6 is also provided. Since the required amount of sensitizer is smaller than that of the mixture, the sensitizer storage tank 6 is specifically designed as an auxiliary tank installed at the rear end of the tank body 1. At the lower end of the sensitizer storage tank 6, a sensitizer output branch pipe 61 is connected, which has a downwardly extending tubular structure.

[0022] like Figure 3 and Figure 5 As shown, this device has a mixing cylinder 7 located at the rear end of the main tank 1 and directly below the auxiliary tank. The mixing cylinder 7 has a horizontal cylindrical geometry. Two independent interfaces are provided on the front side of the mixing cylinder 7. One end of the main discharge pipe 4 is connected to one of these independent interfaces, and one end of the sensitizer output branch pipe 61 is connected to the other independent interface, allowing the mixed base material and sensitizer to enter the front of the mixing cylinder 7 through these two independent paths. Inside the mixing cylinder 7, a stirring shaft 71 is horizontally inserted, with its axis coinciding with the central axis of the mixing cylinder 7. Helical blades 72 are fixedly mounted on the stirring shaft 71, spirally wound around its surface. A motor is connected to one end of the stirring shaft 71, driving the stirring shaft 71 and the helical stirring mechanism to rotate, thereby achieving the propulsion, forced shearing, and mixing of the material inside the cylinder. At the rear end of the mixing cylinder 7, there is an explosive discharge port 73, which is connected to the flexible output hose 43.

[0023] like Figure 1 and Figure 2As shown, a hole alignment mechanism is installed at the rear end of the vehicle frame. The hole alignment mechanism includes a support back plate 81 fixed to the rear end face of the vehicle frame. The support back plate 81 is a vertically arranged plate-like structure. At the rear end of the support back plate 81, a transverse guide beam 82 is arranged parallel to the support back plate 81. The transverse guide beam 82 is a long strip-like structure extending horizontally. A telescopic drive cylinder 83 is fixedly installed on the rear end face of the support back plate 81, above the vehicle frame. The piston end of the telescopic drive cylinder 83 extends horizontally rearward and passes through the support back plate 81. The end of the piston end is fixedly connected to the middle of the transverse guide beam 82, driving the transverse guide beam 82 to move back and forth along the vehicle axis. At each of the left and right ends of the transverse guide beam 82, a horizontal sliding rod 84 is fixedly connected. Both horizontal sliding rods 84 extend horizontally forward and slide horizontally through guide holes opened at both ends of the support back plate 81, thereby providing stable support and guidance for the movement of the transverse guide beam 82. A strip-shaped through groove 821 is opened along the length of the transverse guide beam 82, and the strip-shaped through groove 821 has a certain extension length in the horizontal direction. A transverse guide block 85 is slidably arranged in the strip-shaped through groove 821. The transverse guide block 85 has a vertically extending columnar structure. At both ends of the side wall of the transverse guide block 85, sliding flanges 851 are symmetrically arranged. On the inner side wall of the strip-shaped through groove 821, corresponding limiting grooves 822 are opened for the sliding flanges 851 to be inserted and slide. Through the cooperation of the flanges and the grooves, the transverse guide block 85 is constrained within the transverse guide beam 82 for lateral displacement. A transmission screw 86 is rotatably mounted within the strip groove 821 of the transverse guide beam 82. The transmission screw 86 is arranged parallel to the extension direction of the transverse guide beam 82. The transmission screw 86 passes through the screw nut structure inside the transverse guide block 85 and is connected to a drive motor at one end of the transverse guide beam 82. The drive motor drives the transmission screw 86 to rotate, thereby driving the transverse guide block 85 to move laterally left and right on the transverse guide beam 82.

[0024] like Figure 3 and Figure 5As shown, a vertical through-hole 852 is provided on the transverse guide block 85, extending from its top to its bottom surface. The edge of the vertical through-hole 852 is rounded. A base module 87 is located directly below the transverse guide block 85. The base module 87 is fixedly connected to the transverse guide block 85 via a connecting bracket 88, allowing the base module 87 to move synchronously with the transverse guide block 85. A lower vertical through-hole 871 is also provided on the base module 87, and this lower vertical through-hole 871 is coaxially aligned with the upper vertical through-hole 852 on the transverse guide block 85. A hole block 93 is fixedly provided at the center of the front end of the hollow base beam 9. The hole block 93 has two guide holes at the top and bottom for the flexible output hose 43 to enter and exit.

[0025] like Figure 3 , Figure 4 As shown, a hollow base beam 9 is fixedly installed on the frame along its central axis. The hollow base beam 9 has a longitudinally extending receiving cavity inside. On the bottom surface inside the hollow base beam 9, two guide rails 91 extending parallel to the length of the hollow base beam 9 are arranged at their central positions. The top sides of these two guide rails 91 are both machined into rack structures. Inside the hollow base beam 9, a movable assembly that can move along the rails is also provided. The movable assembly includes two traveling supports 921, and a fixed coupling shaft 922 is laterally connected between the two traveling supports 921. A guide roller 923 is coaxially rotatably sleeved on the fixed coupling shaft 922, and the guide roller 923 can rotate freely on the fixed coupling shaft 922. A drive shaft 924 is rotatably connected between the two traveling supports 921. Two drive gears 925 are mounted on the drive shaft 924, and these two drive gears 925 mesh with rack structures on the top sides of the two guide rails 91, respectively. At one end of the drive shaft 924, a worm gear reduction mechanism 926 driven by a motor is connected. This mechanism outputs torque to drive the drive gears 925 to rotate, thereby causing the entire moving assembly to move back and forth along the track within the hollow base beam 9.

[0026] like Figure 3 and Figure 5As shown, this device also includes a flexible output hose 43, one end of which is tightly connected to the explosive discharge port 73 at the rear end of the mixing cylinder 7. After the flexible output hose 43 is led out from the discharge port, its body passes through the upper vertical through hole 852 at the top of the transverse guide block 85 from top to bottom, extends out from the bottom of the transverse guide block 85, enters the internal space of the hollow base beam 9 through the guide through hole at the upper position 93, then goes around the circumference of the guide roller 923 on the moving component, changes direction, and then goes back to the hole 93, and exits through the lower guide through hole to the lower vertical through hole 871 of the base module 87 at the lower end of the transverse guide block 85. At the end of the flexible output hose 43, a terminal counterweight 431 is fixedly connected to guide the hose downward by gravity.

[0027] like Figure 5 and Figure 6 As shown, two friction drive shafts 872 are rotatably mounted inside the base module 87, and these two friction drive shafts 872 are arranged parallel to each other. The two friction drive shafts 872 are connected to each other by a set of gear transmission pairs 873, and one of the friction drive shafts 872 is connected to the output end of an external drive motor. A flexible clamping wheel 874 is coaxially fixed on each of the two friction drive shafts 872. A portion of the rim of these two flexible clamping wheels 874 protrudes from the side wall of the lower vertical through hole 871 of the base module 87 and is tightly pressed against the outer wall of the flexible output hose 43 from both sides.

[0028] During the initial operation phase, the mixed explosives truck arrives at the designated blasting site. The emulsion explosive oil-based and water-based mixture stored in the main tank 1 is pumped downstream through the discharge main pipe 4 at the rear of the main tank 1 under external pump pressure. Simultaneously, the sensitizer storage tank 6, located at the rear of the main tank 1, begins synchronous operation, with the sensitizer flowing downwards through the sensitizer output branch pipe 61 at the lower end of the auxiliary tank. The two materials converge at the front end of the mixing drum 7, where a motor drives the stirring shaft 71 to rotate at high speed, causing the spiral stirring mechanism fixed to the shaft to rotate accordingly. The axially distributed spiral blades 72 forcefully shear and continuously stir the flowing materials, ensuring the sensitizer is evenly distributed in the mixture, forming an emulsion explosive. Under propulsion pressure, the mixed explosive is discharged through the explosive discharge port 73 at the rear of the mixing drum 7, entering the subsequent conveying stage.

[0029] To ensure the flexible output hose 43 accurately enters the rupture hole, the device performs multi-dimensional position adjustment through a hole alignment mechanism. The support back plate 81, fixed to the rear end of the frame, serves as a reference support. After receiving a control command, the piston end of the telescopic drive cylinder 83 extends and retracts. Since the piston end passes through the support back plate 81 and is fixed to the middle of the transverse guide beam 82, this action directly drives the transverse guide beam 82 to move axially along the vehicle body. During this process, the two horizontal sliding rods 84 at both ends of the transverse guide beam 82 slide smoothly within the guide holes of the support back plate 81, ensuring the horizontality and stability of the transverse guide beam 82 during forward and backward movement. The motor installed inside the transverse guide beam 82 drives the transmission screw 86 to rotate. Since the transmission screw 86 passes through the transverse guide block 85, the rotation of the screw is converted into transverse linear motion of the transverse guide block 85 within the strip groove 821. The sliding flanges 851 on both sides of the transverse guide block 85 slide within the limiting groove 822, strictly limiting its movement trajectory and preventing deflection during movement. By adjusting the telescopic drive cylinder 83 forward and backward and the transmission screw 86 left and right, the upper vertical through hole 852 on the transverse guide block 85 and the lower vertical through hole 871 on the base module 87 can be precisely suspended directly above the blast hole.

[0030] After the flexible output hose 43 exits from the explosive discharge port 73 of the mixing cylinder 7, it first passes through the upper vertical through-hole 852 of the transverse guide block 85 into the hollow base beam 9, then around the guide roller 923 on the moving assembly, and finally returns to the lower vertical through-hole 871 of the base module 87. This design forms a variable-length "U-shaped" loop. When it is necessary to lower the hose into the blast hole, the motor in the hollow base beam 9 drives the drive shaft 924 to rotate through the worm gear reduction mechanism 926, causing the drive gear 925 on the drive shaft 924 to travel on the rack structure of the guide rail 91. When the moving assembly moves closer to the mixing cylinder 7, the guide roller 923 moves accordingly, shortening the loop length of the hose inside the hollow base beam 9, thereby releasing more hose to extend below the base module 87. Conversely, when the moving component moves backward, the guide roller 923 pulls the hose backward, retrieving it. At the very end of the hose output, the mechanism within the base module 87 provides final auxiliary power and stabilization. A motor drives two friction drive shafts 872 to rotate, with a gear transmission pair 873 ensuring synchronous and counter-rotating rotation. Two flexible clamping rollers 874 mounted on the shafts press against the walls of the flexible output hose 43 from both sides of the lower vertical through-hole 871, using friction to forcefully push the hose downward or pull it upward. The terminal counterweight 431, relying on its own weight, ensures the hose remains vertical during descent, smoothly entering the depths of the blast hole.

[0031] This device achieves continuous mixing of the emulsion explosive mixture base material and sensitizer by incorporating a spiral stirring mechanism with spiral blades 72 within the mixing cylinder 7, ensuring the stability of the physical properties of the finished explosive and the uniformity of the charge quality. The integrated hole alignment mechanism uses a telescopic drive cylinder 83 to drive the transverse guide beam 82 for forward and backward axial adjustment, and a transmission screw 86 to drive the transverse guide block 85 for left and right lateral adjustment, assisting in the rapid alignment and fixed guidance of the explosive holes, effectively solving the problems of low efficiency and inaccurate positioning in traditional manual operation. The flexible output hose 43 forms a variable-length "U-shaped" loop inside the hollow base beam 9, bypassing the guide roller 923. The extension and retraction length of the hose is precisely controlled by the displacement of the moving component on the rack structure of the guide rail 91. This built-in hose management method not only effectively utilizes the internal space of the chassis but also avoids long-distance hoses being exposed, tangled, or damaged outside the vehicle body, greatly improving the operational stability of the equipment in complex mining environments. In addition, the friction drive shaft 872 and flexible clamping wheel 874 installed inside the base module 87, together with the terminal counterweight 431 at the end of the hose, can provide reliable power for the hose to be lowered and lifted, ensuring that the hose always remains vertical and taut during deep hole charging operations. This achieves precise control of the charging depth and a high degree of automation in the operation process, significantly reducing the labor intensity of operators and improving the safety and overall production efficiency of open-pit blasting operations.

[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. An automatic charging device for open-air blasting mixed explosives using a flexible tubing loop, characterized in that: Includes a hole alignment mechanism, a hollow base beam (9), a moving component, and a flexible output hose (43); The hole alignment mechanism is installed at the rear end of the frame of the mixed explosives vehicle. The hole alignment mechanism includes a support back plate (81), a transverse guide beam (82), and a transverse guide block (85). The transverse guide beam (82) is movably arranged on the support back plate (81) along the extension direction of the frame. The transverse guide block (85) is transversely arranged on the transverse guide beam (82). The hollow base beam (9) is arranged on the upper side of the frame. The hollow base beam (9) is provided with a moving component that moves horizontally along the axial direction of the hollow base beam (9). A guide roller (923) is rotatably connected to the moving component. The input end of the flexible output hose (43) is connected to the explosive production source. The flexible output hose (43) passes through the transverse guide block (85) and enters the hollow base beam (9) in sequence. It then passes around the guide roller (923) to form a variable length U-shaped loop. Finally, it extends vertically from the output position below the transverse guide block (85). The external overhang length of the flexible output hose (43) is adjusted by the axial displacement of the moving component within the hollow base beam (9).

2. The open-pit blasting mixed explosive hose loop automatic charging device according to claim 1, characterized in that: A telescopic drive cylinder (83) is fixed at the rear end of the support back plate (81). The piston end of the telescopic drive cylinder (83) passes horizontally through the support back plate (81) and is fixedly connected to the middle of the transverse guide beam (82). Two horizontal slide rods (84) are symmetrically fixed at both ends of the transverse guide beam (82). The two horizontal slide rods (84) slide horizontally through both ends of the support back plate (81).

3. The open-pit blasting mixed explosive hose loop automatic charging device according to claim 1, characterized in that: A strip-shaped through slot (821) extending along the length of the transverse guide beam (82) is provided through the transverse guide beam (82). A transmission screw (86) driven by a motor is rotatably arranged in the strip-shaped through slot (821). The transmission screw (86) is arranged parallel to the extension direction of the transverse guide beam (82) and passes through the transverse guide block (85) to drive the transverse guide block (85) to perform left and right transverse displacement adjustment on the transverse guide beam (82).

4. The open-pit blasting mixed explosive hose loop automatic charging device according to claim 3, characterized in that: The inner walls of the two sides of the strip-shaped through groove (821) are provided with limiting grooves (822) extending laterally, and the two ends of the side wall of the transverse guide block (85) are provided with sliding flanges (851), which are embedded in the limiting grooves (822).

5. The open-pit blasting mixed explosive hose loop automatic charging device according to claim 1, characterized in that: Two parallel guide rails (91) extending along the direction of the hollow base beam (9) are provided in the middle of the inner bottom surface of the hollow base beam (9). The moving component includes two walking supports (921). The two walking supports (921) are each equipped with two guide rails (91) for movement. A fixed connecting shaft (922) is connected between the two walking supports (921). The guide roller (923) is coaxially rotated and sleeved on the fixed connecting shaft (922).

6. The open-pit blasting mixed explosive hose loop automatic charging device according to claim 5, characterized in that: A drive shaft (924) is rotatably connected between the two walking supports (921). The outer end of the drive shaft (924) is provided with a worm gear reduction mechanism (926) driven by a motor. Two drive gears (925) are provided on the drive shaft (924). The top side of the guide rail (91) is a rack structure. The two drive gears (925) mesh with the top rack structures of the two guide rails (91) respectively.

7. The open-pit blasting mixed explosive hose loop automatic charging device according to claim 1, characterized in that: It also includes a tank body (1) mounted on the frame and a sensitizer storage tank (6) mounted at the rear end of the tank body (1). The rear end of the tank body (1) is provided with a discharge main pipe (4) for discharging base material. The lower end of the sensitizer storage tank (6) is provided with a sensitizer output branch pipe (61). The discharge main pipe (4) and the sensitizer output branch pipe (61) are both connected to the flexible output hose (43).

8. The open-pit blasting mixed explosive hose loop automatic charging device according to claim 7, characterized in that: It also includes a mixing cylinder (7), which is located above the rear end of the hollow base beam (9). The mixing cylinder (7) has a horizontal cylindrical structure. The discharge main pipe (4) and the sensitizer output branch pipe (61) are both connected to the front end of the mixing cylinder (7). A stirring main shaft (71) is transversely installed inside the mixing cylinder (7). A spiral blade (72) is fixedly installed on the stirring main shaft (71). The spiral blade (72) is spirally wound around the surface of the stirring main shaft (71). The rear end of the mixing cylinder (7) is provided with an explosive discharge port (73) connected to the flexible output hose (43).

9. The open-pit blasting mixed explosive hose loop automatic charging device according to claim 1, characterized in that: The transverse guide block (85) has an upper vertical through hole (852) through it. The lower part of the transverse guide block (85) is connected to a base module (87) via a connecting frame (88). The base module (87) has a lower vertical through hole (871) coaxially arranged with the upper vertical through hole (852). The hollow base beam (9) has a hole block (93) fixedly provided at the middle of its front end. The hole block (93) has two guide holes on its upper and lower sides for the flexible output hose (43) to pass through and exit.

10. The open-pit blasting mixed explosive hose loop automatic charging device according to claim 9, characterized in that: The base module (87) is internally equipped with two friction drive shafts (872) that mesh with a gear transmission pair (873). Flexible pressure rollers (874) are coaxially mounted on the friction drive shafts (872). The two flexible pressure rollers (874) protrude from the lower vertical through hole (871) and press against the walls on both sides of the flexible output hose (43). The end of the flexible output hose (43) is equipped with a terminal counterweight (431) for guiding the lowering.

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