Explosion-proof unmanned transport vehicle for underground coal mine

Abstract

The invention relates to the technical field of transport vehicles, in particular to a coal mine underground anti-explosion unmanned transport vehicle which comprises a vehicle body, a transport mechanism mounted on the vehicle body, a mounting frame mounted on the vehicle body, a shielding mechanism mounted on the mounting frame, protection mechanisms mounted at the two ends of the vehicle body, a spraying mechanism mounted on the vehicle body and a gas injection mechanism mounted on the spraying mechanism. A driving mechanism is mounted on the gas injection mechanism; movable transportation under a mine is facilitated through the transportation mechanism, automatic clamping, loading and unloading of objects are facilitated through cooperation of the mechanical arm and the shielding mechanism, the obstacle clearing effect can be achieved, obstacles around the vehicle body can be detected through the protection mechanism, and meanwhile the effects of buffering and damage preventing are achieved; spraying and dust falling can be conducted on the interior of the mine through the spraying mechanism, the driving mechanism is controlled through the conveying mechanism, the driving mechanism controls the air injection mechanism to inflate the spraying mechanism, and water is continuously sprayed out.

Description

Technical Field

[0001] The present invention relates to the technical field of transport vehicles, and in particular to an explosion-proof driverless transport vehicle for underground coal mines. Background Art

[0002] The popularization and use of explosion-proof trackless auxiliary transport vehicles have greatly improved the transport efficiency of coal mine production, but at the same time, problems such as underground tail gas emission pollution, poor driving experience of drivers, and high driving intensity have also arisen. And underground auxiliary transport accidents caused by human factors have also occurred frequently. In recent years, with the continuous improvement of the mechanization and informatization levels of coal production, related technologies such as fully mechanized mining faces without people and fully mechanized tunneling faces without people have become increasingly mature and have entered the stage of popularization and application, making great contributions to the goal of building a green mine with "replacing people with mechanization, reducing people with automation, and having no people with intelligence".

[0003] Due to the large amount of dust at the bottom of the mine, the current explosion-proof driverless transport vehicles for underground coal mines are not easy to effectively suppress the internal dust, which is likely to cause potential safety hazards. And the existing spray nozzles are all exposed, and dust is likely to accumulate on the nozzles when not in use, which is likely to cause blockage of the spray holes. Moreover, there is a lack of handling components on the transport vehicle, and manual operation is still required during loading and unloading of goods, which is time-consuming and laborious, reducing the transport range of the transport vehicle. And most of the spraying is driven by a water pump. When the transport vehicle drives the water pump to work continuously through electricity, the battery power will be greatly consumed, shortening the running time of the transport vehicle. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides an explosion-proof driverless transport vehicle for underground coal mines.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an explosion-proof driverless transport vehicle for underground coal mines, including a vehicle body, a transport mechanism is installed on the vehicle body, a mounting frame is installed on the vehicle body, a shielding mechanism is installed on the mounting frame, protection mechanisms are installed at both ends of the vehicle body, a spraying mechanism is installed on the vehicle body, an air injection mechanism is installed on the spraying mechanism, and a driving mechanism is installed on the air injection mechanism.

[0006] Specifically, the transport mechanism includes a drive shaft, drive shafts are rotatably connected to both ends of the vehicle body, drive wheels are respectively installed at both ends of the two drive shafts, a control module and a battery are installed inside the vehicle body, a drive motor is installed inside one end of the vehicle body, the drive motor is connected to the drive shaft through a transmission shaft, scanning radars are installed at the tops of both ends of the vehicle body, and a searchlight, a camera and a warning light are installed at both ends of the vehicle body.

[0007] Specifically, columns are vertically and detachably connected to the four corners of the top of the vehicle body, and fences are respectively connected between the four columns, and multiple fences form a frame structure.

[0008] Specifically, the protection mechanism includes a mounting plate. Mounting plates are respectively installed at both ends of the vehicle body. The mounting plate is connected to the vehicle body through two connecting rods. An obstacle avoidance radar is installed on the mounting plate. Both ends of the obstacle avoidance radar and the mounting plate are arc-shaped structures.

[0009] Specifically, two parallel fixing rods are respectively installed inside both ends of the vehicle body. One end of the connecting rod extends into the fixing rod. A telescopic spring is installed inside the fixing rod. One end of the connecting rod is slidably connected to the inside of the fixing rod through the telescopic spring.

[0010] Specifically, the spraying mechanism includes a water tank. The water tank is detachably installed inside one end of the vehicle body through a fixing plate. A conduit is installed on the water tank. Connecting sleeves are respectively vertically connected to the four corners of the top of the vehicle body. One end of the conduit is connected to the inner sides of the bottoms of multiple connecting sleeves. A sliding sleeve is slidably connected to the inner sides of the tops of multiple connecting sleeves through a compression spring. The top side of the sliding sleeve extends to the outside of the top of the connecting sleeve. A sealing ring is installed on the inner side of the top of the connecting sleeve. The sliding sleeve is slidably connected to the sealing ring. Multiple spray nozzles are installed on the outer side wall of the sliding sleeve. The spray nozzles are slidably connected to the inner side wall of the sealing ring. The sliding sleeve is a cylindrical structure with an open bottom. The other ends of multiple spray nozzles respectively extend to the inside of the connecting sleeve.

[0011] Specifically, the air injection mechanism includes a mounting seat. A mounting seat is installed at the center of one side of the water tank. A telescopic airbag is slidably connected inside the mounting seat. A first air pipe and a second air pipe are installed at one end of the mounting seat. A first one-way valve and a second one-way valve are respectively installed on the first air pipe and the second air pipe. The first air pipe and the second air pipe extend into the mounting seat and are connected to the telescopic airbag. The bottom of the second air pipe extends to the outside of the bottom of the water tank.

[0012] Specifically, the first air pipe and the second air pipe are connected through a connecting pipe. The top of the connecting pipe is located at the air inlet end of the first one-way valve, and the bottom of the connecting pipe is located at the air inlet end of the second one-way valve. An electromagnetic valve is installed on the connecting pipe. The electromagnetic valve is electrically connected to the control module. A filter screen is installed at the bottom of the second air pipe.

[0013] Specifically, the driving mechanism includes a pressing plate. A pressing plate is slidably connected inside the mounting seat. The pressing plate is slidably connected to the inside of the mounting seat through a return spring. The pressing plate is located at one end of the telescopic airbag. A top block is slidably connected to the center of one end of the mounting seat. The top block extends into the mounting seat and is vertically connected to the pressing plate. The other end of the top block is rotatably connected to a guide wheel. A cam is installed on one of the driving shafts. The cam abuts against the guide wheel.

[0014] Specifically, the shielding mechanism includes a baffle. One side of each of the two mounting frames is slidably connected with a baffle. Both ends of the top of the baffle are respectively provided with connecting blocks. Inner sides of both ends of each of the two mounting frames are respectively provided with electric push rods. Tops of the two electric push rods extend to the outside of the mounting frames. Output shafts at the tops of the two electric push rods are respectively connected with the connecting blocks. Clamping blocks are respectively installed at edges on both sides of the mounting frames. The clamping blocks are of an "L" - shaped structure.

[0015] The beneficial effects of the present invention are as follows: (1) For the explosion - proof driverless transport vehicle in coal mines of the present invention, through the cooperative installation of the transport mechanism and the vehicle body, it is beneficial for the vehicle body to move in the mine and transport items. The operation is convenient and the safety factor is high.

[0016] (2) For the explosion - proof driverless transport vehicle in coal mines of the present invention, through the installation of the mounting frame, it is beneficial for the installation of the manipulator. Through the manipulator, items can be automatically clamped and transported onto the vehicle body, and it can also play a role in clearing obstacles. With the cooperation of the shielding mechanism, shielding and protection can be realized when the manipulator is not working.

[0017] (3) For the explosion - proof driverless transport vehicle in coal mines of the present invention, through the installation of the protection mechanism, it is beneficial to detect obstacles around the vehicle body, and thus play a role in obstacle avoidance. At the same time, when there is a collision, it can contract to play a role in buffering and preventing damage.

[0018] (4) For the explosion - proof driverless transport vehicle in coal mines of the present invention, through the installation of the spraying mechanism, it is beneficial to spray and reduce dust in the mine. Through the control of the driving mechanism by the transport mechanism, the driving mechanism controls the air injection mechanism to pump air into the spraying mechanism, so as to realize continuous water spraying control. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure provided by the present invention; Figure 2 It is a schematic diagram of the bottom structure of the vehicle body of the present invention; Figure 3 It is a schematic diagram of the connection structure between the electric push rod and the mounting frame of the present invention; Figure 4 It is a schematic diagram of the connection structure between the clamping block and the mounting frame of the present invention; Figure 5 It is a schematic diagram of the connection structure between the obstacle - avoidance radar and the mounting plate of the present invention; Figure 6 It is a schematic diagram of the connection structure between the connecting rod and the fixed rod of the present invention; Figure 7 Schematic diagram of the connection structure between the mounting base and the water tank of the present invention; Figure 8 Schematic diagram of the connection structure between the top block and the mounting base of the present invention; Figure 9 Schematic diagram of the connection structure between the telescopic airbag and the mounting base of the present invention; Figure 10 Schematic diagram of the connection structure between the fence and the column of the present invention; Figure 11 Schematic diagram of the connection structure between the sliding sleeve and the connecting sleeve of the present invention.

[0021] In the figure: 1, vehicle body; 2, transportation mechanism; 201, driving wheel; 202, battery; 203, scanning radar; 204, searchlight; 205, camera; 206, fence; 207, warning light; 208, column; 209, drive shaft; 210, transmission shaft; 211, drive motor; 212, control module; 3, mounting frame; 4, shielding mechanism; 401, baffle; 402, clamping block; 403, electric push rod; 404, connecting block; 5, protection mechanism; 501, obstacle avoidance radar; 502, mounting plate; 503, connecting rod; 504, fixing rod; 505, telescopic spring; 6, spraying mechanism; 601, water tank; 602, fixing plate; 603, conduit; 604, connecting sleeve; 605, sealing ring; 606, sliding sleeve; 607, nozzle; 608, compression spring; 7, air injection mechanism; 701, mounting base; 702, first air pipe; 703, first one-way valve; 704, second air pipe; 705, filter screen; 706, solenoid valve; 707, connecting pipe; 708, second one-way valve; 709, telescopic airbag; 8, driving mechanism; 801, cam; 802, top block; 803, guide wheel; 804, return spring; 805, pressing plate; 9, manipulator. Detailed implementation manners

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0023] As Figure 1 , Figure 3 , Figure 5 and Figure 8 shown, a kind of explosion-proof driverless transport vehicle in coal mines of the present invention includes a vehicle body 1, a transportation mechanism 2 is installed on the vehicle body 1, a mounting frame 3 is installed on the vehicle body 1, a shielding mechanism 4 is installed on the mounting frame 3, protection mechanisms 5 are installed at both ends of the vehicle body 1, a spraying mechanism 6 is installed on the vehicle body 1, an air injection mechanism 7 is installed on the spraying mechanism 6, and a driving mechanism 8 is installed on the air injection mechanism 7.

[0024] Specifically, asFigure 1 and Figure 2 As shown in Figure 2 , the transportation mechanism 2 includes a drive shaft 209. The two ends of the vehicle body 1 are rotatably connected to the drive shaft 209. Driving wheels 201 are respectively installed at both ends of the two drive shafts 209. A control module 212 and a battery 202 are installed inside the vehicle body 1. A drive motor 211 is installed inside one end of the vehicle body 1. The drive motor 211 is connected to the drive shaft 209 through a transmission shaft 210. Scanning radars 203 are installed at the tops of both ends of the vehicle body 1. Searchlights 204, cameras 205 and warning lights 207 are installed at both ends of the vehicle body 1. Through the installation of the drive shaft 209, it is beneficial to connect the driving wheels 201, so as to support and move the vehicle body 1. Through the battery 202, it is beneficial to supply power to the whole device. Through the control module 212, the operation of the drive motor 211 is controlled, so that the drive motor 211 drives the drive shaft 209 to work through the transmission shaft 210, and then drives the driving wheels 201 to rotate, realizing the movement of the vehicle body 1, which is beneficial to transporting goods inside the mine, with convenient operation and high safety factor.

[0025] Specifically, as Figure 2 shown in Figure 2 , vertical columns 208 are detachably connected to the four corners of the top of the vehicle body 1. The four vertical columns 208 are respectively connected by fences 206. The multiple fences 206 form a frame structure. Through the installation of the vertical columns 208, it is beneficial to fixedly connect the four fences 206 to form a frame structure, which is beneficial to placing goods without falling, playing a role in safety protection.

[0026] Specifically, as Figure 1 and Figure 5 shown in Figure 1 and Figure 5 , the protection mechanism 5 includes a mounting plate 502. Mounting plates 502 are respectively installed at both ends of the vehicle body 1. The mounting plate 502 is connected to the vehicle body 1 through two connecting rods 503. An obstacle avoidance radar 501 is installed on the mounting plate 502. Both ends of the obstacle avoidance radar 501 and the mounting plate 502 are arc-shaped structures. Through the cooperation of the connecting rods 503, the connection of the mounting plate 502 is realized. Through the installation of the mounting plate 502, the connection of the obstacle avoidance radar 501 is realized. Through the design of the arc-shaped structures at both ends of the obstacle avoidance radar 501 and the mounting plate 502, it is beneficial to increase the scanning range of obstacle avoidance and the obstacle avoidance detection effect is better.

[0027] Specifically, as Figure 5 and Figure 6As shown, two parallel fixed rods 504 are respectively installed inside both ends of the vehicle body 1. One end of the connecting rod 503 extends into the inside of the fixed rod 504. A telescopic spring 505 is installed inside the fixed rod 504. One end of the connecting rod 503 is slidably connected to the inside of the fixed rod 504 through the telescopic spring 505. Through the installation of the fixed rod 504, it is beneficial to support and connect the connecting rod 503. Through the installation of the telescopic spring 505, one end of the connecting rod 503 can telescopically slide inside the fixed rod 504, so that the mounting plate 502 and the obstacle avoidance radar 501 can telescopically slide at one end of the vehicle body 1, which is beneficial for the obstacle avoidance radar 501 to contract under the cooperation of the telescopic spring 505 when colliding, playing a buffering role and preventing the obstacle avoidance radar 501 from being damaged.

[0028] Specifically, such as Figure 2 , Figure 7 , Figure 10 and Figure 11As shown, the spray mechanism 6 includes a water tank 601. The water tank 601 is detachably installed inside one end of the vehicle body 1 through a fixing plate 602. A conduit 603 is installed on the water tank 601. At the four corners of the top of the vehicle body 1, connection sleeves 604 are vertically connected respectively. One end of the conduit 603 is connected to the inner sides of the bottoms of the multiple connection sleeves 604. Inside the tops of the multiple connection sleeves 604, a sliding sleeve 606 is slidably connected through a compression spring 608. The top side of the sliding sleeve 606 extends to the outside of the top of the connection sleeve 604. A sealing ring 605 is installed inside the top of the connection sleeve 604. The sliding sleeve 606 is slidably connected with the sealing ring 605. A plurality of spray nozzles 607 are installed on the outer side wall of the sliding sleeve 606. The spray nozzles 607 are slidably connected with the inner side wall of the sealing ring 605. The sliding sleeve 606 is a cylindrical structure with an open bottom. The other ends of the multiple spray nozzles 607 respectively extend to the inside of the connection sleeve 604. Through the installation of the water tank 601, it is beneficial to store water. Through the installation of the connection sleeve 604, it is beneficial to connect the sliding sleeve 606 and the spray nozzles 607. Through the installation of the conduit 603, it is beneficial to convey the water inside the water tank 601 to the inside of the multiple connection sleeves 604. Under the resistance of the compression spring 608, the sliding sleeve 606 is received inside the connection sleeve 604, which is beneficial to shield and protect the spray nozzles 607. With the cooperation of the sealing ring 605, it plays a sealing role. After a certain water pressure enters the inside of the connection sleeve 604 through the conduit 603, the water pressure resists the sliding sleeve 606, and the sliding sleeve 606 slides out of the elastic force of the compression spring 608. After the sliding sleeve 606 slides out of the outside of the top of the connection sleeve 604, the spray nozzles 607 are exposed, and the water is sprayed out in a mist through the spray nozzles 607, playing a role in dust removal of the surrounding environment. When the water pressure decreases, the compression spring 608 drives the sliding sleeve 606 to contract and hide, thereby shielding and protecting the spray nozzles 607 to prevent blockage and affect subsequent spraying.

[0029] Specifically, such as Figure 7 , Figure 8 and Figure 9As shown, the gas injection mechanism 7 includes a mounting base 701. The mounting base 701 is installed at the center of one side of the water tank 601. A telescopic airbag 709 is slidably connected inside the mounting base 701. One end of the mounting base 701 is installed with a first air pipe 702 and a second air pipe 704. A first one-way valve 703 and a second one-way valve 708 are respectively installed on the first air pipe 702 and the second air pipe 704. The first air pipe 702 and the second air pipe 704 extend into the mounting base 701 and are connected to the telescopic airbag 709. The bottom of the second air pipe 704 extends to the outside of the bottom of the water tank 601. Through the installation of the mounting base 701 and the water tank 601 on one side, it is beneficial to connect the telescopic airbag 709. By squeezing the telescopic airbag 709, the gas inside the telescopic airbag 709 is injected into the water tank 601 through the first air pipe 702 and the first one-way valve 703, thereby increasing the pressure inside the water tank 601 and making the water spray out in a mist. Due to the installation of the first one-way valve 703, the water inside the water tank 601 cannot flow back. When there is no external force squeezing the telescopic airbag 709, it resets, and external air enters the telescopic airbag 709 through the second air pipe 704 and the second one-way valve 708 for storage, facilitating subsequent inflation and pressurization of the water tank 601 again.

[0030] Specifically, as Figure 8 shown, the first air pipe 702 and the second air pipe 704 are connected through a connecting pipe 707. The top of the connecting pipe 707 is located at the air inlet end of the first one-way valve 703, and the bottom of the connecting pipe 707 is located at the air inlet end of the second one-way valve 708. A solenoid valve 706 is installed on the connecting pipe 707. The solenoid valve 706 is electrically connected to the control module 212. A filter screen 705 is installed at the bottom of the second air pipe 704. Through the installation of the connecting pipe 707, it is beneficial to connect the solenoid valve 706. With the cooperation of the solenoid valve 706, the connecting pipe 707 is closed, so that the first air pipe 702 and the second air pipe 704 cannot communicate. When spraying is not required, by opening the solenoid valve 706, the first air pipe 702 and the second air pipe 704 are connected, and the gas inside the first air pipe 702 will directly enter the second air pipe 704 through the solenoid valve 706 and be discharged, so that the inside of the water tank 601 will not be inflated and pressurized. Through the installation of the filter screen 705, it is beneficial to filter dust and debris in the external air.

[0031] Specifically, as Figure 7 、 Figure 8 and Figure 9As shown, the driving mechanism 8 includes a pressing plate 805. The pressing plate 805 is slidably connected inside the mounting base 701. The pressing plate 805 is slidably connected to the inside of the mounting base 701 through a return spring 804. The pressing plate 805 is located at one end of the telescopic airbag 709. A top block 802 is slidably connected to the center of one end of the mounting base 701. The top block 802 extends into the mounting base 701 and is perpendicularly connected to the pressing plate 805. The other end of the top block 802 is rotatably connected to a guide wheel 803. A cam 801 is installed on one of the drive shafts 209. The cam 801 abuts against the guide wheel 803. Through the installation of the pressing plate 805 and with the cooperation of the return spring 804, it is beneficial to abut against the telescopic airbag 709. Through the rotation of the drive shaft 209, it is beneficial to drive the cam 801 to repeatedly abut against the guide wheel 803, thereby realizing that the top block 802 squeezes and controls the telescopic airbag 709 by repeatedly abutting against the pressing plate 805, enabling the telescopic airbag 709 to inflate. With the cooperation of the guide wheel 803, the top rod is smoothly abutted, reducing energy loss caused by friction.

[0032] Specifically, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the shielding mechanism 4 includes a baffle 401. The baffle 401 is slidably connected to one side of each of the two mounting frames 3. Connecting blocks 404 are respectively installed at both ends of the top of the baffle 401. Electric push rods 403 are respectively installed on the inner sides of both ends of the two mounting frames 3. The tops of the two electric push rods 403 extend to the outside of the mounting frames 3. The output shafts at the tops of the two electric push rods 403 are respectively connected to the connecting blocks 404. Clamping blocks 402 are respectively installed at the edges of both sides of the mounting frame 3. The clamping blocks 402 are in an "L" shape. Through the installation of the baffle 401, it is beneficial to shield and protect one side of the mounting frame 3, enabling the manipulator 9 to be stored inside the mounting frame 3. Through the installation of multiple clamping blocks 402, it is realized to abut against the side wall edge of the baffle 401, making the baffle 401 stable after closing and playing a guiding role at the same time. Through the operation of the electric push rod 403, the lifting control of the baffle 401 is realized, which is beneficial to realize the opening and closing of the baffle 401.

[0033] When the present invention is in use, first, by installing the drive shaft 209, it is beneficial to connect the drive wheel 201, so as to support and move the vehicle body 1. By controlling the operation of the drive motor 211 through the control module 212, it is realized that the drive motor 211 drives the drive shaft 209 to work through the transmission shaft 210, and then drives the drive wheel 201 to rotate, so as to realize the movement of the vehicle body 1, which is beneficial to the transportation of goods inside the mine, with convenient operation and high safety factor. By installing the column 208, it is beneficial to fixedly connect the four fences 206 to form a frame structure, which is beneficial to placing the goods without falling, playing a role in safety protection. By installing the mounting frame 3, it is beneficial to install the manipulator 9. By installing the manipulator 9, it is realized that in a unmanned environment, the transported materials and maintenance tools are clamped and placed on the vehicle, transported and then unloaded, and the coal dropped on the roadway can also be clamped and cleaned. By installing the baffle 401, it is beneficial to shield and protect one side of the mounting frame 3, so that the manipulator 9 is stored inside the mounting frame 3. By installing a plurality of clamping blocks 402, it is realized that the side wall edge of the baffle 401 is abutted, so that the baffle 401 is stable after being closed, and at the same time plays a guiding role. By the operation of the electric push rod 403, the lifting control of the baffle 401 is realized, which is beneficial to realizing the opening and closing of the baffle 401. By the cooperation of the connecting rod 503, the connection of the mounting plate 502 is realized. By installing the mounting plate 502, the connection of the obstacle avoidance radar 501 is realized. Through the design of the arc-shaped structures at both ends of the obstacle avoidance radar 501 and the mounting plate 502, it is beneficial to increase the scanning range of obstacle avoidance, and the obstacle avoidance detection effect is better. By installing the fixing rod 504, it is beneficial to support and connect the connecting rod 503. By installing the telescopic spring 505, one end of the connecting rod 503 can slide telescopically inside the fixing rod 504, so that the mounting plate 502 and the obstacle avoidance radar 501 can slide telescopically at one end of the vehicle body 1, which is beneficial to the obstacle avoidance radar 501 to contract under the cooperation of the telescopic spring 505 when colliding, playing a buffering role to prevent the obstacle avoidance radar 501 from being damaged. By installing the water tank 601, it is beneficial to store water. By installing the connecting sleeve 604, it is beneficial to connect the sliding sleeve 606 and the nozzle 607. By installing the conduit 603, it is beneficial to convey the water inside the water tank 601 to the inside of a plurality of connecting sleeves 604. Under the resistance of the compression spring 608, the sliding sleeve 606 is received inside the connecting sleeve 604, which is beneficial to shielding and protecting the nozzle 607. With the cooperation of the sealing ring 605, it plays a sealing role. After a certain water pressure enters the connecting sleeve 604 through the conduit 603, the water pressure abuts against the sliding sleeve 606, and the sliding sleeve 606 slides out of the elastic force of the compression spring 608. After the sliding sleeve 606 slides out of the top outside of the connecting sleeve 604, the nozzle 607 is exposed, and the water is sprayed out in a mist through the nozzle 607, playing a role in dust removal of the surrounding environment. When the water pressure decreases, the compression spring 608 drives the sliding sleeve 606 to contract and hide, so as to shield and protect the nozzle 607 and prevent blockage from affecting subsequent spraying. By installing the mounting seat 701 on one side of the water tank 601,It is convenient to connect the telescopic airbag 709. By squeezing the telescopic airbag 709, the gas inside the telescopic airbag 709 is injected into the water tank 601 through the first air pipe 702 and the first one-way valve 703, thereby pressurizing the inside of the water tank 601 and spraying water in the form of mist. Since the first one-way valve 703 is installed, the water inside the water tank 601 cannot flow back. The telescopic airbag 709 is reset when there is no external force squeezing. External air enters the telescopic airbag 709 through the second air pipe 704 and the second one-way valve 708 for storage, which is convenient for the subsequent inflating and pressurizing of the water tank 601. The installation of the connecting pipe 707 is convenient for connecting the electromagnetic valve 706. With the cooperation of the electromagnetic valve 706, the connecting pipe 707 is closed, so that the first air pipe 702 and the second air pipe 704 cannot be connected. When spraying is not needed, By opening the electromagnetic valve 706, the first air pipe 702 is connected with the second air pipe 704, and the gas inside the first air pipe 702 will directly enter the second air pipe 704 through the electromagnetic valve 706 and be discharged, so that the water tank 601 will not be filled with gas and pressurized. The installation of the filter 705 is conducive to filtering dust and debris in the external air. The installation of the pressure plate 805, with the cooperation of the return spring 804, is conducive to the contact with the telescopic airbag 709. Through the rotation of the driving shaft 209, it is conducive to driving the cam 801 to repeatedly contact the guide wheel 803, and then the top block 802 can realize the squeezing control of the telescopic airbag 709 by repeatedly contacting the pressure plate 805, so that the telescopic airbag 709 can be inflated. With the cooperation of the guide wheel 803, the push rod is contacted smoothly, reducing the energy loss caused by friction.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An explosion-proof driverless transport vehicle for underground coal mines, characterized in that It includes a vehicle body (1), a transportation mechanism (2) is installed on the vehicle body (1), a mounting frame (3) is installed on the vehicle body (1), a shielding mechanism (4) is installed on the mounting frame (3), protective mechanisms (5) are installed at both ends of the vehicle body (1), a spraying mechanism (6) is installed on the vehicle body (1), an air injection mechanism (7) is installed on the spraying mechanism (6), and a driving mechanism (8) is installed on the air injection mechanism (7). The spraying mechanism (6) includes a water tank (601). The water tank (601) is detachably installed inside one end of the vehicle body (1) through a fixing plate (602). A conduit (603) is installed on the water tank (601). Connecting sleeves (604) are vertically connected to the four corners of the top of the vehicle body (1) respectively. One end of the conduit (603) is connected to the inner sides of the bottoms of the multiple connecting sleeves (604). Sliding sleeves (606) are slidably connected to the inner sides of the tops of the multiple connecting sleeves (604) through compression springs (608). The top sides of the sliding sleeves (606) extend to the outer sides of the tops of the connecting sleeves (604). Sealing rings (605) are installed on the inner sides of the tops of the connecting sleeves (604). The sliding sleeves (606) are slidably connected to the sealing rings (605). Multiple spray nozzles (607) are installed on the outer side walls of the sliding sleeves (606). The spray nozzles (607) are slidably connected to the inner side walls of the sealing rings (605). The sliding sleeves (606) are of a cylindrical structure with an open bottom. The other ends of the multiple spray nozzles (607) respectively extend to the inner sides of the connecting sleeves (604).

2. The explosion-proof driverless transport vehicle for underground coal mines according to claim 1, wherein: The transportation mechanism (2) includes a driving shaft (209). The driving shaft (209) is rotatably connected to both ends of the vehicle body (1). Driving wheels (201) are installed at both ends of the two driving shafts (209) respectively. A control module (212) and a battery (202) are installed inside the vehicle body (1). A driving motor (211) is installed inside one end of the vehicle body (1). The driving motor (211) is connected to the driving shaft (209) through a transmission shaft (210). Scanning radars (203) are installed on the tops of both ends of the vehicle body (1). Searchlights (204), cameras (205) and warning lights (207) are installed at both ends of the vehicle body (1). Columns (208) are vertically and detachably connected to the four corners of the top of the vehicle body (1). The multiple columns (208) are connected through fences (206) respectively. The multiple fences (206) form a frame structure.

3. The explosion-proof driverless transport vehicle for underground coal mines according to claim 1, wherein: The protective mechanism (5) includes a mounting plate (502). Mounting plates (502) are installed at both ends of the vehicle body (1) respectively. The mounting plates (502) are connected to the vehicle body (1) through two connecting rods (503). Obstacle avoidance radars (501) are installed on the mounting plates (502). The obstacle avoidance radars (501) and both ends of the mounting plates (502) are of arc-shaped structures.

4. The explosion-proof driverless transport vehicle for underground coal mines according to claim 3, wherein: Two parallel fixed rods (504) are respectively installed inside both ends of the vehicle body (1). One end of the connecting rod (503) extends into the fixed rod (504). A telescopic spring (505) is installed inside the fixed rod (504). One end of the connecting rod (503) is slidably connected to the inside of the fixed rod (504) through the telescopic spring (505).

5. The explosion-proof driverless transport vehicle for underground coal mines according to claim 2, wherein: The air injection mechanism (7) includes a mounting base (701). The mounting base (701) is installed at the center of one side of the water tank (601). A telescopic airbag (709) is slidably connected inside the mounting base (701). A first air pipe (702) and a second air pipe (704) are installed at one end of the mounting base (701). A first one-way valve (703) and a second one-way valve (708) are respectively installed on the first air pipe (702) and the second air pipe (704). The first air pipe (702) and the second air pipe (704) extend into the mounting base (701) and are connected to the telescopic airbag (709). The bottom of the second air pipe (704) extends to the outside of the bottom of the water tank (601).

6. The explosion-proof driverless transport vehicle for underground coal mines according to claim 5, characterized in that: The first air pipe (702) and the second air pipe (704) are connected through a connecting pipe (707). The top of the connecting pipe (707) is located at the air inlet end of the first one-way valve (703). The bottom of the connecting pipe (707) is located at the air inlet end of the second one-way valve (708). A solenoid valve (706) is installed on the connecting pipe (707). The solenoid valve (706) is electrically connected to the control module (212). A filter screen (705) is installed at the bottom of the second air pipe (704).

7. The explosion-proof driverless transport vehicle for underground coal mines according to claim 6, wherein: The driving mechanism (8) includes a pressing plate (805). The pressing plate (805) is slidably connected inside the mounting base (701). The pressing plate (805) is slidably connected to the inside of the mounting base (701) through a return spring (804). The pressing plate (805) is located at one end of the telescopic airbag (709). A top block (802) is slidably connected to the center of one end of the mounting base (701). The top block (802) extends into the mounting base (701) and is vertically connected to the pressing plate (805). The other end of the top block (802) is rotatably connected to a guide wheel (803). A cam (801) is installed on one of the driving shafts (209). The cam (801) abuts against the guide wheel (803).

8. The explosion-proof driverless transport vehicle for underground coal mines according to claim 1, characterized in that: The shielding mechanism (4) includes a baffle (401). The baffle (401) is slidably connected to one side of each of the two mounting brackets (3). Connecting blocks (404) are respectively installed at both ends of the top of the baffle (401). Electric push rods (403) are respectively installed inside the two ends of the two mounting brackets (3). The tops of the two electric push rods (403) extend to the outside of the mounting brackets (3). The output shafts of the tops of the two electric push rods (403) are respectively connected to the connecting blocks (404). Clamping blocks (402) are respectively installed at the edges of both sides of the mounting brackets (3). The clamping blocks (402) are of an "L" - shaped structure.

Images