Blast hole filling length measuring device based on field mixed loading ammonium nitrate fuel oil explosive truck

Abstract

The utility model relates to the technical field of on-site explosive loading, in particular to a blast hole filling length measuring device based on an on-site mixed loading ammonium nitrate fuel oil explosive truck, which is used for the mixed loading explosive truck and comprises a top spiral cylinder connected with the tail end of a top spiral of the mixed loading explosive truck. A pulley is connected to the mounting base through a pin shaft, an inner groove is formed in the periphery of the pulley, a rope slides in the inner groove, the two ends of the rope are connected with a balancing weight and a tension sensor respectively, a depth sensor is arranged in the balancing weight, and after the balancing weight is arranged at a preset position in a blast hole, explosive can be fed into the blast hole in real time; compared with the conventional mode of manually measuring the filling length of the blast hole after filling the explosive, the method provided by the utility model has the advantage that the measuring efficiency is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of on-site explosive loading technology, and in particular to a borehole filling length measuring device based on an on-site mixed ammonium nitrate fuel oil explosive vehicle. Background Technology

[0002] Industrial explosives on-site mixing technology, as one of the safest innovative achievements in the civil explosives industry, has been widely applied thanks to the long-term practical testing of its core carrier, the explosive mixing vehicle. In borehole filling operations, the amount of explosive loaded into the borehole is usually determined based on the filling length, which refers to the vertical distance from the top surface of the charge to the borehole opening. However, due to insufficient metering accuracy of existing mixed nitrous oxide (NH4O5) explosive loading vehicles and the varying borehole diameters, manual measurement with a measuring rope is still required in actual operations to ensure the filling length. Therefore, a device is needed to automatically measure the borehole filling length when the explosive mixing vehicle is used for filling boreholes. Utility Model Content

[0003] The purpose of this invention is to provide a borehole filling length measuring device based on an on-site mixed ammonium nitrate explosive truck, so as to meet the need for automated measurement of borehole filling length during the filling operation of the explosive mixed loading truck.

[0004] To achieve the above objectives, this utility model provides a borehole filling length measuring device based on a field-mixed ammonium nitrate explosive (AMFO) explosive truck. The device is used in the AMFO truck and includes a top spiral cylinder connected to the end of the top spiral of the AMFO truck. A mounting seat is provided on the inner circular wall of the top spiral cylinder. A pulley is connected to the mounting seat via a pin. An inner groove is provided on the outer circumference of the pulley, and a rope slides within the inner groove. A counterweight and a tension sensor are respectively connected to the two ends of the rope. A depth sensor is provided within the counterweight.

[0005] When using a mixed explosives loading vehicle to automatically load explosives into blast holes, the measuring device of this invention is used to align the material outlet end of the top screw with the blast hole. After issuing the loading command, the rope and the counterweight descend, stopping when they reach the predetermined loading height inside the blast hole. Simultaneously, the explosives are discharged from the top screw outlet into the blast hole. At this time, the tension sensor measures the tension F1 of the rope in real time. When the explosives reach the predetermined loading height, the counterweight is lifted upwards, causing the rope to bend slightly. At this point, the tension sensor detects a sudden drop in the tension on the rope, reaching the threshold F2, and loading stops. After the explosives stop being discharged, the rope moves upwards to the top screw outlet, and the driver of the mixed explosives loading vehicle can proceed to the next blast hole for loading operations.

[0006] The top spiral cylinder has a discharge port in the middle, which is aligned with the outlet at the end of the top spiral. The top spiral cylinder also has a pre-drilled hole that penetrates the cylinder wall and is adapted to the rope. A quick-connect connector is also snapped onto the outside of the top spiral cylinder.

[0007] After the discharge port is aligned with the outlet of the top spiral, the spiral inside the top spiral begins to rotate, allowing the explosive charge to be fed into the borehole through the discharge port. The reserved hole is used to cooperate with the rope, so that the rope can drive the counterweight to move up and down through the inner groove. The quick-connect connector is used to connect an external guide tube to guide the explosive charge into the borehole.

[0008] The quick-connector has a connecting thread at its top, and the quick-connector is connected and fixed to the bottom of the top spiral cylinder through the connecting thread.

[0009] The connecting thread is used to improve the connection stability between the quick-connect fitting and the bottom of the top spiral cylinder.

[0010] The measuring device also includes a controller and a PLC audible and visual alarm. The controller is electrically connected to the tension sensor, and the PLC audible and visual alarm is also electrically connected to the controller.

[0011] After the controller is electrically connected to the tension sensor, it works with the tension sensor to acquire the rope tension in real time, and controls the rope to rise and fall according to the rope tension, transmitting the tension data to the cab in real time. The PLC audible and visual alarm is connected to the controller, and after the controller receives a stop loading signal, it can send a stop loading signal to the driver through the PLC audible and visual alarm.

[0012] This utility model discloses a borehole filling length measuring device based on an on-site mixed ammonium nitrate explosive truck. On the basis of the existing mixed explosive truck, after placing the counterweight block at a preset position inside the borehole, explosives can be fed into the borehole in real time until the loaded explosives contact the counterweight block to change the curvature of the rope. Compared with the previous method of repeatedly measuring manually after loading explosives to confirm the borehole filling length, the measurement efficiency is significantly improved. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the on-site mixing and loading vehicle for ammonium nitrate explosives according to this utility model.

[0015] Figure 2 This is a cross-sectional schematic diagram of a borehole filling length measuring device based on an on-site mixed ammonium nitrate explosive vehicle according to the present invention.

[0016] Figure 3 This is an explosion diagram of a borehole filling length measuring device based on an on-site mixed ammonium nitrate explosive vehicle, according to the present invention.

[0017] Figure 4 This is a schematic diagram of the principle of a borehole filling length measuring device based on an on-site mixed ammonium nitrate explosive vehicle.

[0018] 1. Mixed explosives cart; 2. Top spiral cylinder; 3. Mounting base; 4. Pulley; 5. Inner groove; 6. Rope; 7. Counterweight; 8. Tension sensor; 9. Discharge port; 10. Top spiral; 11. End outlet; 12. Reserved hole; 13. Quick connector; 14. Connecting thread; 15. Controller; 16. PLC audible and visual alarm. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] Please see Figures 1 to 4 This utility model provides a borehole filling length measuring device based on a field-mixed ammonium nitrate explosive vehicle, used in a mixed explosive vehicle 1. It includes a top spiral 10 cylinder 2 connected to the end of the top spiral 10 of the mixed explosive vehicle 1. A mounting seat 3 is provided on the inner circular wall of the top spiral 10 cylinder 2. A pulley 4 is connected to the mounting seat 3 by a pin. An inner groove 5 is provided on the outer circumference of the pulley 4. A rope 6 slides in the inner groove 5. The two ends of the rope 6 are respectively connected to a counterweight 7 and a tension sensor 8. A depth sensor is provided in the counterweight 7.

[0021] In this embodiment, a mixed explosives cart 1 is used to load explosives into the borehole. Based on the measuring device of the present invention, the outlet end of the top auger 10 containing explosives is aligned with the borehole, and the counterweight 7 is sent into the borehole according to the required filling length. After reaching the preset depth, the internal spiral of the top auger 10 is started to feed explosives into the borehole until the explosives fill to the point that they support the counterweight 7. Then the spiral operation is stopped to complete the explosive filling of a single borehole. The filling length is determined based on the depth between the counterweight 7 and the ground. When the explosives are filled to the point that they contact the counterweight 7, it can be confirmed that the preset filling length has been reached.

[0022] Furthermore, the top spiral 10 cylinder 2 is provided with a discharge port 9 in the middle, which is aligned with the end outlet 11 of the top spiral 10. The top spiral 10 cylinder 2 is also provided with a reserved hole 12, which penetrates the cylinder wall of the top spiral 10 cylinder 2 and is adapted to the rope 6. A quick-connect connector 13 is also snapped onto the outside of the top spiral 10 cylinder 2.

[0023] The discharge port 9 is located at the end of the top spiral 10. It works with the internal spiral of the top spiral 10 to deliver explosives into the borehole. The reserved hole 12 is designed to work with the rope 6. The rope 6 moves along the length of the top spiral 10 through the reserved hole 12, thereby moving the counterweight 7 within the borehole. This allows the filling length inside the borehole to be adjusted as needed, avoiding the need for repeated manual measurements.

[0024] Furthermore, the quick-connector 13 is provided with a connecting thread 14 at its top, and the quick-connector 13 is connected and fixed to the bottom of the top spiral 10 cylinder 2 through the connecting thread 14.

[0025] The connecting thread 14 is sleeved on the bottom of the top spiral 10 cylinder 2 to realize the connection and fixation of the quick-connect connector 13 to the top spiral 10 cylinder 2. The quick-connect connector 13 is also connected to the explosive guide tube to guide the explosive into the borehole.

[0026] Furthermore, the measuring device also includes a controller 15 and a PLC audible and visual alarm 16. The controller 15 is electrically connected to the tension sensor 8, and the PLC audible and visual alarm 16 is also electrically connected to the controller 15.

[0027] In this embodiment, the controller 15 is electrically connected to the tension sensor 8 to obtain the tension of the rope 6 in real time, and controls the rope 6 to rise and fall according to the tension of the rope 6, and then controls the signal of the PLC audible and visual alarm 16.

[0028] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A device for measuring the filling length of boreholes in a vehicle carrying mixed ammonium nitrate explosives (1), characterized in that, The device includes a top spiral (10) cylinder (2) connected to the end of the top spiral (10) of the mixed explosives vehicle (1). A mounting seat (3) is provided on the inner circular wall of the top spiral (10) cylinder (2). A pulley (4) is connected to the mounting seat (3) by a pin. An inner groove (5) is provided on the outer circumference of the pulley (4). A rope (6) slides in the inner groove (5). The two ends of the rope (6) are respectively connected to a counterweight (7) and a tension sensor (8). A depth sensor is provided in the counterweight (7).

2. The borehole filling length measuring device based on an on-site mixed ammonium nitrate explosive vehicle as described in claim 1, characterized in that, The top spiral (10) cylinder (2) is provided with a discharge port (9) in the middle, which is aligned with the end outlet (11) of the top spiral (10). The top spiral (10) cylinder (2) is also provided with a reserved hole (12), which penetrates the cylinder wall of the top spiral (10) cylinder (2) and is adapted to the rope (6). A quick-connect connector (13) is also snapped onto the outside of the top spiral (10) cylinder (2).

3. The borehole filling length measuring device based on an on-site mixed ammonium nitrate explosive vehicle as described in claim 2, characterized in that, The quick-connector (13) has a connecting thread (14) at its top, and the quick-connector (13) is connected and fixed to the bottom of the top spiral (10) cylinder (2) through the connecting thread (14).

4. The borehole filling length measuring device based on an on-site mixed ammonium nitrate explosive vehicle as described in claim 1, characterized in that, The measuring device also includes a controller (15) and a PLC audible and visual alarm (16). The controller (15) is electrically connected to the tension sensor (8), and the PLC audible and visual alarm (16) is also electrically connected to the controller (15).

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