A pumping device for blasting boreholes

Abstract

This application relates to a pumping device for blasting boreholes, comprising a vehicle-mounted platform including a rotating device; an extension device connected to the rotating device, the extension device being capable of circumferential rotation relative to the vehicle-mounted platform; and a pumping device including a water pump and a pump pipe, both the water pump and the pump pipe being mounted on the extension device and moving with the extension device. This application provides the ability to flexibly pump water from large-scale blasting boreholes.

Description

Technical Field

[0001] This application relates to the technical field of engineering machinery, and in particular to a pumping device for blasting boreholes. Background Technology

[0002] Blasting is a crucial and frequently used construction method in many fields, including engineering construction and mining. With the continuous advancement of infrastructure construction, such as the building of roads and bridges, the construction of large buildings, and the efficient extraction of mineral resources, the requirements for the efficiency and quality of blasting operations are becoming increasingly stringent. The handling of water accumulation within blast holes directly affects the blasting effect and safety, making pumping work particularly important. Effective and convenient pumping equipment lays the foundation for the smooth progress of subsequent blasting procedures, ensuring the progress and quality of the entire project, and positively impacting the economic and social benefits of engineering construction.

[0003] In the past, water pumping operations at blast holes primarily relied on manual operation of small water pumps. Workers had to manually move the pumps to the vicinity of the blast hole and manually adjust their position and height to bring them as close to the water surface as possible. Another common method was to use simple tripods to secure the pumps, with ropes and pulleys used to assist in adjusting their position within the blast hole. Additionally, pumps with fixed supports were sometimes used, but these supports typically lacked flexibility, allowing only limited positional adjustments within a certain range. While these traditional pumping methods could achieve a certain level of water pumping capability for large-scale blasting operations, the operation was cumbersome and consumed significant manpower and time.

[0004] Existing methods for pumping water from blasting boreholes have significant drawbacks. Manually operating water pumps is not only labor-intensive and inefficient, but also affects the blasting effect. While simple tripods and fixed supports can provide some support, they lack sufficient flexibility and mobility when dealing with boreholes at different locations and depths, making it difficult to carry out pumping operations quickly and failing to meet the needs of large-scale, high-efficiency blasting operations. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a pumping device for blasting boreholes.

[0006] The blasting borehole pumping device provided in this application adopts the following technical solution: A blasting borehole pumping device, comprising:

[0007] A vehicle-mounted platform, the vehicle-mounted platform including a rotating device;

[0008] An extension device, connected to the rotating device, capable of circumferential rotation relative to the vehicle platform; and

[0009] A pumping device, comprising a water pump and a pump pipe, wherein the water pump and the pump pipe are both mounted on the extension device and move with the extension device.

[0010] By adopting the above technical solution, the vehicle-mounted platform is equipped with a rotating device, which enables the extension device to rotate circumferentially relative to the vehicle-mounted platform, thus expanding the coverage of the pumping operation; the water pump and pump pipe are both installed on the extension device, which facilitates pumping operations at blasting holes in different locations.

[0011] Preferably, the rotating device includes a gear module and a motor, the extending device is fixedly connected to the gear module, and the motor is used to drive the gear module to rotate.

[0012] By adopting the above technical solution, the pumping truck can use a motor to drive the gear module to rotate, thereby driving the extension device to rotate circumferentially relative to the vehicle platform, realizing flexible adjustment of the working position of the extension device, and improving the convenience and adaptability of pumping operations.

[0013] Preferably, the gear module includes a rotary tooth, a plurality of rotating teeth and a drive tooth, the drive tooth being located between the rotating teeth and connected to the motor, and the rotary tooth meshing with the rotating teeth and the rotating teeth meshing with the drive tooth.

[0014] By adopting the above technical solution, the extension device can rotate circumferentially relative to the vehicle platform. The motor drives the gear module to rotate, and the gear module is configured with the drive teeth located between the rotating teeth and connected to the motor. The rotation teeth mesh with the rotating teeth and the driving teeth, which can stably and reliably transmit the motor power to the rotating device, making the circumferential rotation operation of the extension device smoother and more efficient.

[0015] Preferably, the extension device includes a mounting bracket and a boom mounted on the mounting bracket. The mounting bracket is mounted on the gear module, and the water pump is fixed on the mounting bracket. The boom is a multi-stage telescopic structure.

[0016] By adopting the above technical solution, the water pumping truck has a vehicle-mounted platform, a rotating device, an extension device, and a pumping device. The rotating device consists of a gear module and a motor. The motor drives the gear module to rotate, causing the extension device to rotate circumferentially. The mounting bracket of the extension device is installed on the gear module, and the boom has a multi-stage telescopic structure. This realizes the circumferential rotation function of the extension device relative to the vehicle-mounted platform and the telescopic function of the boom. It is convenient to adjust the position and height of the pumping device, and improves the adaptability of the water pumping truck to blasting holes at different positions and depths and the flexibility of water pumping operations.

[0017] Preferably, the boom includes a first extendable arm, a second extendable arm, a third extendable arm, a fourth extendable arm, and a plurality of rotating mechanisms. The first extendable arm is rotatably connected to the mounting support. The first extendable arm, the second extendable arm, the third extendable arm, and the fourth extendable arm are rotatably connected relative to each other. The second extendable arm is located between the first extendable arm and the third extendable arm. The rotating mechanisms are respectively disposed between the first extendable arm and the mounting support, between the first extendable arm and the second extendable arm, between the second extendable arm and the third extendable arm, and between the third extendable arm and the fourth extendable arm.

[0018] By adopting the above technical solution, the extension device of the water pumping truck has the ability to be multi-stage telescopic and the extension arms can rotate relative to each other, which improves the flexibility and adjustability of the extension device, and can more accurately adjust the position of the pump pipe, making it easier to put the pump pipe into the blasting holes at different positions and depths for water pumping operations.

[0019] Preferably, the rotating mechanism includes a telescopic cylinder, a first support arm, and a second support arm. The telescopic cylinder and the first support arm are spaced apart and rotatably connected to both ends of the first extension arm, the end of the second extension arm near the third extension arm, and the end of the third extension arm near the fourth extension arm. The second support arm is rotatably connected to the mounting bracket, the end of the second extension arm near the first extension arm, the end of the third extension arm near the second extension arm, and the end of the fourth extension arm near the third extension arm. The telescopic cylinder and the first support arm are rotatably connected to the second support arm.

[0020] By adopting the above technical solution, the water pumping truck has a vehicle-mounted platform, a rotating device, an extension device, and a pumping device. The rotating device includes a gear module and a motor. The extension device includes a mounting bracket and a multi-stage telescopic boom. The boom includes multiple extension arms and a rotating mechanism. The rotating mechanism consists of a telescopic cylinder, a first support arm, and a second support arm. This allows the extension arms of the boom to rotate and extend flexibly, increasing the flexibility and reach of the water pumping truck's operation. It also allows for better adjustment of the pump pipe position to adapt to blasting holes at different locations and depths for water pumping operations.

[0021] Preferably, the system also includes a water storage tank and a drain pipe, wherein the water storage tank is installed on the vehicle platform and the drain pipe is connected to the water storage tank and the water pump respectively.

[0022] By adopting the above technical solution, the water pump can work stably when installed on the vehicle platform, and the water storage tank installed on the vehicle platform can store the pumped water. The drain pipe is connected to the water storage tank and the water pump respectively to realize the transportation of water from the water pump to the water storage tank for storage.

[0023] Preferably, the pump pipe is detachably connected to a telescopic pipe and a float plate. The telescopic pipe and the float plate are located at one end of the pump pipe near the fourth telescopic arm. The float plate is fixedly connected to the opening of the telescopic pipe. The dimensions of the telescopic pipe and the float plate correspond to the diameter of the blast hole.

[0024] By adopting the above technical solution, the telescopic pipe and float plate are detachably connected to the end of the pump pipe near the fourth telescopic arm, and the size corresponds to the diameter of the burst hole, which makes it easy for the pumping device to be adapted to burst holes of different diameters; the float plate is fixed to the opening of the telescopic pipe so that the telescopic pipe can extend into the water surface, which is conducive to pumping water; the detachable connection makes it easy to replace the telescopic pipe and float plate according to different needs.

[0025] Preferably, the float plate has a circular through hole that matches the opening of the telescopic tube, and a filter screen is provided at the circular through hole.

[0026] By adopting the above technical solution, the circular through-hole with filter screen can filter out impurities in the water, preventing them from entering the telescopic pipe and pump pipe and causing blockage, thus ensuring the smooth operation of the water pumping truck.

[0027] Preferably, the vehicle platform further includes a support device, which includes four hydraulic outriggers, which are respectively disposed at the four top corners of the vehicle platform.

[0028] By adopting the above technical solution, the vehicle platform of the water pumping truck is equipped with a support device, and the support device uses four hydraulic outriggers respectively set at the four top corners of the vehicle platform, which can enhance the stability of the vehicle platform, make the water pumping truck more stable during operation, and ensure the smooth progress of water pumping work.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. The extension device can rotate circumferentially relative to the vehicle platform, and its position can be flexibly adjusted to quickly and accurately reach the blasting holes at different locations for pumping water, which improves the mobility and flexibility of the pumping equipment and meets the needs of large-scale and high-efficiency blasting construction.

[0031] 2. The pumping device works in conjunction with the extension device to achieve the water pumping function of the blasting borehole through the water pump and pump pipe, avoiding the problems of high labor intensity and low efficiency caused by manual operation of the water pump;

[0032] 3. The vehicle platform is equipped with a support device, and four hydraulic outriggers can stably support the entire water pump truck, making the water pumping operation more stable and reliable, and ensuring the smooth progress of the water pumping work. Attached Figure Description

[0033] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0034] Figure 2 yes Figure 1 Schematic diagram of the installation of the extension device and the pumping device;

[0035] Figure 3 This is a schematic diagram of the extension device in its deployed state;

[0036] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0037] Figure 5 This is a schematic diagram of the rotating device;

[0038] Figure 6 This is a structural diagram of the mounting bracket;

[0039] Figure 7 This is a schematic diagram of the floating plate structure.

[0040] Explanation of reference numerals in the attached drawings: 1. Vehicle-mounted platform; 11. Rotating device; 111. Gear module; 1111. Rotating gear; 1112. Rotating gear; 1113. Drive gear; 112. Motor; 12. Support device; 121. Hydraulic outrigger; 2. Extension device; 21. Mounting support; 22. Boom; 221. First extension arm; 222. Second extension arm; 223. Third extension arm; 224. Fourth extension arm; 225. Rotating mechanism; 2251. Telescopic cylinder; 2252. First support arm; 2253. Second support arm; 3. Pumping device; 31. Water pump; 32. Pump pipe; 4. Water storage tank; 5. Drain pipe; 6. Telescopic pipe; 7. Float; 71. Circular through hole; 72. Filter screen; 8. Control console; 9. Clamp; 10. Connecting sleeve. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-7 The present application will be described in further detail. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Those skilled in the art can combine the embodiments of the present invention to obtain other embodiments without creative effort, which are also within the protection scope of the present invention.

[0042] Open-pit mine blast hole diameters are typically 200-310 mm (8-12 inches), depending on the type of drilling equipment: roller cone drills commonly use 250-310 mm (for hard rock), down-the-hole drills use 150-200 mm (for medium-hard rock), and hydraulic rock drills use 76-127 mm (for small mines or pre-splitting blasting). With the development of bench blasting technology, the mainstream borehole diameter has expanded to 250-380 mm to increase the charge per hole and blasting efficiency. Borehole depth = bench height + extra depth. Bench height: The typical bench height in open-pit mine bench blasting is 10-15 meters (small to medium-sized mines) to 15-20 meters (large mines). Extra depth: To prevent "root" residue, an additional 0.5-3 meters of borehole needs to be drilled at the bottom of the bench.

[0043] The main factors affecting the amount of water accumulation in boreholes are rainwater infiltration (water accumulation increases by 30%-50% during the rainy season), rising groundwater levels (in geologically fractured zones or areas near water bodies), or residual cooling water during the drilling process.

[0044] Formula for calculating water accumulation:

[0045] Q=πr 2 h, where r is the borehole radius (in meters) and h is the water depth (in meters).

[0046] The actual water accumulation is usually 1 / 3 to 2 / 3 of the hole depth, but can reach 10-15 meters in the rainy season or high-water areas (with a single hole carrying over 1000 liters of water). For example, with a hole diameter of 250mm and a depth of 15 meters, if the water depth is 1 / 3 of the hole depth:

[0047] Q = π × (0.125) 2 ×5≈245 liters Q=π×(0.125) 2 ×5≈245 liters. For every 1 meter increase in depth, the water volume increases by approximately 49 liters (250mm orifice diameter).

[0048] Small submersible pumps (flow rate 20-50L / min): 5-12 minutes per hole to process 250mm diameter, 5m deep water. Vehicle-mounted drainage devices (arm reach <15m): Mobility and positioning account for 30% of the time, resulting in lower-than-expected overall efficiency. A single blast requires processing 200-300 holes; if each hole takes 10 minutes, the total time is 33-50 hours, severely hindering the operation's progress.

[0049] Therefore, this application discloses a pumping device for blasting holes, which can improve the drainage efficiency of water accumulated in mine blasting holes.

[0050] refer to Figure 1 A pumping device for blasting boreholes includes a vehicle-mounted platform 1, an extension device 2, and a pumping device 3.

[0051] The extension device 2 is connected to the vehicle platform 1 and can rotate circumferentially relative to the vehicle platform 1. The pumping device 3 is installed on the extension device 2. This configuration allows the pumping truck to flexibly adjust the pumping position to adapt to different positions of the blast holes, improving the efficiency and flexibility of the pumping operation, reducing labor intensity, and better meeting the blast hole pumping needs of large-scale projects and complex terrain conditions.

[0052] refer to Figure 1 and Figure 5 Specifically, the vehicle platform 1 includes a rotating device 11 and a supporting device 12. The rotating device 11 includes a gear module 111 and a motor 112. The gear module 111 includes a rotary gear 1111, multiple rotating gears 1112, and a drive gear 1113. The drive gear 1113 is located between the rotating gears 1112 and is connected to the motor 112. The rotary gear 1111 meshes with the rotating gears 1112, and the rotating gears 1112 mesh with the drive gears 1113. There are three rotating gears 1112.

[0053] The motor 112 serves as the power source and can be a three-phase asynchronous motor, etc. It drives the drive gear 1113 to rotate. The drive gear 1113, through meshing with the rotating gear 1112, causes the rotating gear 1112 to drive the rotary gear 1111 to rotate. The rotary gear 1111 is typically a ring-shaped internal gear, and its material can be high-strength alloy steel to ensure sufficient strength and wear resistance. Here, the rotating gear 1112 and the drive gear 1113 can be involute gears, which have advantages such as smooth transmission and high load-bearing capacity.

[0054] The support device 12 includes four hydraulic outriggers 121, which are respectively located at the four corners of the vehicle platform 1. The hydraulic outriggers 121 can be driven by hydraulic cylinders, and their outer shells are typically made of high-strength steel. The internal telescopic cylinders 2251 are chrome-plated to improve wear and corrosion resistance. When the water pump truck is operating, the hydraulic outriggers 121 extend and support the ground, increasing the vehicle's stability and preventing swaying or overturning during pumping.

[0055] refer to Figure 1 , Figure 3 and Figure 5 Specifically, the extension device 2 includes a mounting support 21 and a boom 22 mounted on the mounting support 21. The mounting support 21 is fixedly mounted on the rotary gear 1111 by bolts, and the boom 22 is a multi-stage telescopic structure.

[0056] Specifically, the boom 22 includes a first extendable boom 221, a second extendable boom 222, a third extendable boom 223, a fourth extendable boom 224, and multiple rotating mechanisms 225. The rotating mechanisms 225 are respectively disposed between the first extendable boom 221 and the mounting support 21, between the first extendable boom 221 and the second extendable boom 222, between the second extendable boom 222 and the third extendable boom 223, and between the third extendable boom 223 and the fourth extendable boom 224. The first extendable boom 221 is rotatably connected to the mounting support 21. The rotating mechanisms 225 are used to realize the relative rotatable connection between the first extendable boom 221, the second extendable boom 222, the third extendable boom 223, and the fourth extendable boom 224, wherein the second extendable boom 222 is located between the first extendable boom 221 and the third extendable boom 223.

[0057] refer to Figure 3 and Figure 4 The rotating mechanism 225 includes a telescopic cylinder 2251, a first support arm 2252, and a second support arm 2253. The telescopic cylinder 2251, the first support arm 2252, and the second support arm 2253 are rotatably connected to each other to achieve multi-stage telescopic extension of the boom 22. Specifically, the telescopic cylinder 2251 and the first support arm 2252 are spaced apart and rotatably connected to both ends of the first extension arm 221, the end of the second extension arm 222 near the third extension arm 223, and the end of the third extension arm 223 near the fourth extension arm 224, respectively. The second support arm 2253 is rotatably connected to the mounting bracket 21, the end of the second extension arm 222 near the first extension arm 221, the end of the third extension arm 223 near the second extension arm 222, and the end of the fourth extension arm 224 near the third extension arm 223. The telescopic cylinder 2251 and the first support arm 2252 are rotatably connected to the second support arm 2253, respectively. The telescopic cylinder 2251 is generally made of high-strength alloy steel with a smooth surface to reduce friction with other components. The first support arm 2252 and the second support arm 2253 are typically steel structures, and their shape can be rectangular to ensure sufficient strength and rigidity. The rotating mechanism 225 controls the rotation angle between the extension arms by extending and retracting the telescopic cylinder 2251, thereby realizing the extension and retraction of the boom 22. For example, when the telescopic cylinder 2251 extends, it pushes the first support arm 2252 and the second support arm 2253 to rotate, thus changing the angle between adjacent extension arms. The combination of multiple extension arms and the rotating mechanism 225 allows the boom 22 to flexibly adjust its length and angle, adapting to boreholes of different depths and positions.

[0058] refer to Figures 1-3The pumping device 3 includes a water pump 31 and a pump pipe 32. The pump pipe 32 is fixed in sections along the boom 22 and is detachably fixed to the boom 22 using clamps 9. Adjacent pump pipes 32 are rotatably connected together at the rotating mechanism 225 via connecting sleeves 10. The connecting sleeves 10 are flexible, extendable, and bendable, such as rubber corrugated pipes. When adjacent boom sections are folded or unfolded via the rotating mechanism 225, the connecting sleeves 10 can cooperate with the folding and unfolding of the boom to allow multiple sections of pump pipe 32 to fold or unfold accordingly. Specifically, the water pump 31 is fixedly installed on the mounting bracket 21 and connected to the pump pipe 32 via a rubber hose. The water pump 31 can be a centrifugal pump, which has the characteristics of large flow rate and high head, suitable for borehole pumping operations. The pump pipe 32 is made of steel pipe, which has the characteristics of high strength and corrosion resistance. The pump pipe 32 is fixed along the boom 22 and can move with the extension and retraction of the boom 22, making it convenient to accurately place the water pump 31's suction port into the borehole.

[0059] refer to Figure 3 and Figure 7 The distal end of the pump pipe 32 is detachably connected to a telescopic pipe 6 and a float 7. The telescopic pipe 6 and float 7 are located at the end of the pump pipe 32 near the fourth telescopic arm. The telescopic pipe 6 is threaded onto the pump pipe 32, and the float 7 is fixedly connected to the opening of the telescopic pipe 6. The dimensions of the telescopic pipe 6 and float 7 correspond to the diameter of the blast hole. The float 7 has a circular through hole 71 that mates with the opening of the telescopic pipe 6, and a filter screen 72 is installed at the circular through hole 71. Specifically, when pumping is required, the fourth extension arm 224 can be vertically positioned directly above the blast hole. At this time, the float 7, due to its own weight, causes the telescopic pipe 6 to extend and extend into the accumulated water. After the float 7 extends into the water surface, it will not sink due to buoyancy. When pumping, the float 7 causes the telescopic pipe 6 to fall as the water level drops. The filter screen 72 can be made of stainless steel to prevent debris in the blast hole from entering the pump pipe 32 and to avoid clogging of the water pump 31.

[0060] refer to Figure 1 In addition, it includes a water storage tank 4 and a drain pipe 5. The water storage tank 4 is installed on the vehicle platform 1, and the drain pipe 5 is connected to both the water storage tank 4 and the water pump 31. The water storage tank 4 is usually made of plastic or metal, and its capacity can be selected according to actual needs. The drain pipe 5 is used to transport the water pumped by the water pump 31 to the water storage tank 4. The drain pipe 5 can be made of PVC pipe, etc., which has the characteristics of corrosion resistance and good sealing performance.

[0061] The support device 12, the rotating mechanism 225 and the rotating device 11 are all controlled by the control console 8.

[0062] The implementation principle of a blasting borehole pumping device according to an embodiment of this application is as follows: When a pumping task is required, the pumping truck stops at a predetermined position, adjusts the four hydraulic outriggers 121 to fix the vehicle platform 1 stably on the ground, fixes the telescopic pipe 6 at the inlet of the pump pipe 32, controls the boom 22 to rotate circumferentially relative to the vehicle platform 1 by the rotating device 11, and controls the relative rotation between the extension arms of the boom 22 by the rotating mechanism 225, thereby adjusting the extension length of the boom 22 to adapt to the blasting boreholes located at different positions. The float 7 and the telescopic pipe 6 cooperate to extend into the water in the blasting borehole, and the water pump 31 is started to pump out the water and discharge it into the water storage tank 4.

[0063] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A blasting hole water pumping device, characterized by, include: Vehicle platform (1), the vehicle platform (1) includes a rotating device (11); An extension device (2) connected to the rotating device (11), the extension device (2) being capable of circumferential rotation relative to the vehicle platform (1); and The pumping device (3) includes a water pump (31) and a pump pipe (32). Adjacent pump pipes (32) are connected by a connecting sleeve (10) for telescopic rotation. The pump pipe (32) is mounted on the extension device (2) and can be extended and folded along with the extension device (2).

2. A blasting hole water pumping device according to claim 1, characterized in that: The rotating device (11) includes a gear module (111) and a motor (112). The extension device (2) is fixedly connected to the gear module (111), and the motor (112) is used to drive the gear module (111) to rotate.

3. A blasting hole water pumping device according to claim 2, characterized in that: The gear module (111) includes a rotary gear (1111), a plurality of rotating gears (1112) and a drive gear (1113). The drive gear (1113) is located between the rotating gears (1112) and connected to the motor (112). The rotary gear (1111) meshes with the rotating gears (1112) and the rotating gears (1112) mesh with the drive gears (1113).

4. A pumping device for blasting boreholes according to claim 2, characterized in that: The extension device (2) includes a mounting bracket (21) and a boom (22) mounted on the mounting bracket (21). The mounting bracket (21) is mounted on the gear module (111). The water pump (31) is fixed on the mounting bracket (21). The boom (22) is a multi-stage telescopic structure. The pump pipe (32) is arranged in multiple sections to cooperate and fix with the boom (22).

5. A blasting hole water pumping device according to claim 4, characterized in that: The boom (22) includes a first extension arm (221), a second extension arm (222), a third extension arm (223), a fourth extension arm (224), and a plurality of rotating mechanisms (225). The first extension arm (221) is rotatably connected to the mounting support (21). The first extension arm (221), the second extension arm (222), the third extension arm (223), and the fourth extension arm (224) are rotatably connected relative to each other. The second extension arm (222) is located between the first extension arm (221) and the third extension arm (223). The rotating mechanisms (225) are respectively disposed between the first extension arm (221) and the mounting support (21), between the first extension arm (221) and the second extension arm (222), between the second extension arm (222) and the third extension arm (223), and between the third extension arm (223) and the fourth extension arm (224).

6. A blasting hole water pumping device according to claim 5, characterized in that: The rotating mechanism (225) includes a telescopic cylinder (2251), a first support arm (2252), and a second support arm (2253). The telescopic cylinder (2251) and the first support arm (2252) are spaced apart and rotatably connected to both ends of the first extension arm (221), one end of the second extension arm (222) near the third extension arm (223), and one end of the third extension arm (223) near the fourth extension arm (224). The second support arm (2253) is rotatably connected to the mounting bracket (21), one end of the second extension arm (222) near the first extension arm (221), one end of the third extension arm (223) near the second extension arm (222), and one end of the fourth extension arm (224) near the third extension arm (223). The telescopic cylinder (2251) and the first support arm (2252) are rotatably connected to the second support arm (2253).

7. A blasting hole water pumping device according to claim 1, characterized in that: It also includes a water storage tank (4) and a drain pipe (5), the water storage tank (4) being installed on the vehicle platform (1), and the drain pipe (5) being connected to the water storage tank (4) and the water pump (31) respectively.

8. A blasting hole water pumping device according to claim 5, characterized in that: The pump pipe (32) is detachably connected to a telescopic pipe (6) and a float (7). The telescopic pipe (6) and the float (7) are located at one end of the pump pipe (32) near the fourth extension arm (224). The float (7) is fixedly connected to the opening of the telescopic pipe (6). The dimensions of the telescopic pipe (6) and the float (7) correspond to the diameter of the blast hole.

9. A blasting hole water pumping device according to claim 8, characterized in that: The float (7) has a circular through hole (71) that matches the opening of the telescopic tube (6), and a filter screen (72) is provided at the circular through hole (71).

10. A blasting hole water pumping device according to claim 1, characterized in that: The vehicle platform (1) also includes a support device (12), which includes four hydraulic outriggers (121), which are respectively located at the four top corners of the vehicle platform (1).

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