Mining anti-explosion underground large-gradient road surface washing and sweeping vehicle

Abstract

The invention provides a mining anti-explosion underground large-gradient road surface washing and sweeping vehicle which comprises a hydraulic retarder and a water storage tank used for storing road surface washing water, and further comprises a heat exchanger which is arranged in a heat conduction oil tank of the hydraulic retarder and exchanges heat with oil in the heat conduction oil tank, and heat exchange media circulate in the heat exchanger; the first radiator is arranged in the water storage tank and exchanges heat with water in the water storage tank; the first circulating pump is sequentially communicated with the heat exchanger and the first radiator in a closed-loop manner to form a first cycle so as to circularly transport a heat exchange medium; the first expansion box is connected to the two ends of the first radiator. According to the mining anti-explosion underground large-gradient road surface washing and sweeping vehicle, the hydraulic retarder can be independently cooled, a cooling system of the washing and sweeping vehicle is not occupied, more energy is saved, the cooling effect on the hydraulic retarder is improved, and then the underground running safety of the washing and sweeping vehicle is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mining machinery, in particular to an explosion-proof underground large-slope road sweeper for mining. Background Art

[0002] There are usually a lot of dust particles in the mine, which not only affects the respiratory health of underground workers, but also easily deposits on the underground roads, forming a thick layer of dust. When underground vehicles, such as transporters, loaders, etc., travel on such roads, the adhesion of dust will greatly reduce the grip of the tires, increase the risk of vehicle skidding and loss of control, and thus cause driving safety problems. In order to effectively clean up the dust and ensure the cleanliness of underground roads and the safety of vehicle driving, special underground washing and sweeping vehicles are usually used for road cleaning operations. The washing and sweeping vehicle can quickly wash away dust, mud and other debris on the road through its high-pressure washing device and sweeping brush device to restore the cleanliness of the road.

[0003] In addition to meeting conventional explosion-proof requirements, underground washing and sweeping vehicles must also be able to adapt to the large slopes that underground roads often have. In order to ensure that washing and sweeping vehicles can travel more safely and smoothly on underground roads with large slopes, hydraulic retarders are usually installed on washing and sweeping vehicles. A hydraulic retarder is a device that uses the principle of hydraulic transmission to reduce the speed of a vehicle. It introduces a hydraulic retarder unit into the vehicle's transmission system and uses the damping effect of the liquid to absorb and consume the vehicle's kinetic energy, thereby achieving the purpose of reducing the vehicle's speed. Therefore, in an environment such as underground where humidity is high and the road surface is prone to slipping, a hydraulic retarder can provide better braking performance and driving stability.

[0004] The cooling of the hydraulic retarder usually relies on the washing and sweeping vehicle's own cooling system. However, the ambient temperature underground is high, and the washing and sweeping vehicle's own cooling system may not be able to dissipate the heat of the hydraulic retarder in time, which will cause the braking performance of the hydraulic retarder to decrease and affect the driving safety of the washing and sweeping vehicle. Summary of the invention

[0005] In view of this, the present invention aims to provide a mining explosion-proof underground large-slope road washing and sweeping vehicle to improve the safety of the washing and sweeping vehicle traveling underground.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A mining explosion-proof underground large-slope road washing and sweeping vehicle comprises a hydraulic retarder and a water storage tank for storing water for washing the road surface, comprising:

[0008] A heat exchanger is arranged in the heat transfer oil tank of the hydraulic retarder and performs heat exchange with the oil in the heat transfer oil tank, and a heat exchange medium flows in the heat exchanger;

[0009] A first radiator is disposed in the water tank and performs heat exchange with the water in the water tank;

[0010] A first circulation pump is connected to the heat exchanger and the first radiator in a closed loop in sequence to form a first circulation, so as to circulate and transport the heat exchange medium;

[0011] The first expansion tank is connected to both ends of the first radiator.

[0012] Furthermore, the washing and sweeping vehicle comprises:

[0013] engine;

[0014] A gearbox, connected to the engine

[0015] The transfer case is connected to the gearbox and transmits the power of the engine to the front wheels, rear wheels and the hydraulic retarder of the washing and sweeping vehicle, and can switch the driving mode of the washing and sweeping vehicle to four-wheel drive or rear-wheel drive.

[0016] Furthermore, the washing and sweeping vehicle comprises:

[0017] a second circulating pump, the outlet of which is connected to the inlet of the cooling pipeline in the engine;

[0018] The second radiator has an outlet connected to the inlet of the second circulation pump

[0019] Thermostat, the inlet of which is connected to the outlet of the cooling pipe in the engine, and the outlet of which is connected to the inlet of the second radiator and the inlet of the second circulating pump, the engine, the thermostat, and the second circulating pump are connected in a closed loop in sequence to form a second circulation of the heat exchange medium, and the engine, the thermostat, the second radiator, and the second circulating pump are connected in a closed loop in sequence to form a third circulation of the heat exchange medium;

[0020] The second expansion tank is connected to both ends of the second radiator.

[0021] Further, the heat exchanger can be connected between an outlet of a cooling line of the engine and an inlet of the thermostat to be incorporated into the second cycle or the third cycle.

[0022] Furthermore, the first radiator is arranged at the bottom of the water tank.

[0023] Furthermore, the first radiator comprises:

[0024] A first heat dissipation pipe is arranged at the front end of the water storage tank;

[0025] A second heat dissipation pipe is arranged at the rear end of the water storage tank;

[0026] A cut-off device is provided corresponding to each of the first heat dissipation tube and the second heat dissipation tube, and can cut off the flow of the heat exchange medium in the first heat dissipation tube or the second heat dissipation tube.

[0027] Furthermore, the cutting device comprises:

[0028] A hydraulically controlled valve, arranged on the first radiating pipe or the second radiating pipe;

[0029] A waterproof box, arranged on the inner bottom wall of the water storage tank, having an inner cavity isolated from the inner space of the water storage tank;

[0030] A sliding part, which is slidably arranged on the waterproof tube, partially penetrates into the waterproof box, and has a density less than water;

[0031] A pressure sensor is arranged in the waterproof box. When the sliding part descends due to a decrease in water level, the pressure sensor can be triggered to close the hydraulic control valve.

[0032] Furthermore, the sliding portion includes:

[0033] a buoyancy body, in contact with the water in the water storage tank;

[0034] A gravity body, disposed in the waterproof box and capable of contacting the pressure sensor;

[0035] A connecting body is connected between the buoyancy body and the gravity body and is slidably and sealingly connected to the waterproof box.

[0036] Furthermore, the waterproof box is columnar, and the buoyancy body is sleeved outside the waterproof box.

[0037] Furthermore, a vent hole is provided at the bottom end of the waterproof box, and the vent hole is connected to the outside of the water storage tank.

[0038] Compared with the prior art, the present invention has the following advantages:

[0039] The explosion-proof underground steep-slope road washing and sweeping vehicle for mining described in the present invention is equipped with a heat exchanger, a first radiator and a first circulation pump, and the first radiator is arranged in a water tank, so that the water in the water tank can be used to cool the heat exchange medium. The heat exchange medium absorbs the heat of the oil in the hydraulic retarder in the heat exchanger, and after flowing to the first radiator, the heat is transferred to the water in the water tank. The hydraulic retarder can be cooled independently without occupying the cooling system of the washing and sweeping vehicle itself, which is more energy-efficient and improves the cooling effect of the hydraulic retarder, thereby improving the safety of the washing and sweeping vehicle when traveling underground; the first expansion tank can balance the liquid pressure of the heat exchange medium in the first circulation, and at the same time play the function of exhausting air, so that the circulation of the heat exchange medium is more stable.

[0040] A transfer case is installed on the washing and sweeping vehicle. The transfer case serves as a transmission device connecting the gearbox, front wheels, rear wheels, and hydraulic retarder. It can distribute the power generated by the engine and realize the switching between the rear-wheel drive mode and the four-wheel drive mode of the washing and sweeping vehicle. It is beneficial for driving on steep slope roads underground and has better safety performance.

[0041] By setting a second circulation pump, a second radiator and a thermostat, a second circulation and a third circulation can be formed. When the temperature of the heat exchange medium after passing through the engine is low, only the second circulation works and the heat exchange medium is cooled naturally. When the temperature of the heat exchange medium after passing through the engine is high, the thermostat can activate the third circulation and distribute the heat exchange medium flow of the second circulation and the third circulation to achieve a more stable cooling effect on the engine. The second expansion tank is set at both ends of the second radiator, which can balance the liquid pressure of the heat exchange medium in the third circulation and play the role of exhaust, so that the circulation of the heat exchange medium is more stable.

[0042] The heat exchanger is connected between the engine and the thermostat, and can be selectively connected to the second cycle or the third cycle, so that the second radiator can cool the heat exchanger when the cooling demand of the hydraulic retarder is not high.

[0043] The heat exchanger is arranged at the bottom of the water tank, and the heat exchanger can be cooled even when the water level in the water tank is low, so that the water in the water tank can be better utilized and the cooling effect of the washing water on the heat exchanger can be ensured.

[0044] The first radiator is provided with a first heat dissipation pipe and a second heat dissipation pipe, which can be respectively arranged at the front and rear ends of the water tank. When the washing and sweeping vehicle is driving on a steep slope, if the water volume in the water tank is low, the first heat dissipation pipe or the second heat dissipation pipe on one side may not be able to fully contact the water. Through the control of the cut-off device, the first heat dissipation pipe and / or the second heat dissipation pipe can be selected for heat dissipation. When the washing and sweeping vehicle is going uphill, the water level at the rear end of the water tank is high, and the second heat dissipation pipe can be used for heat dissipation; when the washing and sweeping vehicle is going downhill, the water level at the front end of the water tank is high, and the first heat dissipation pipe is used for heat dissipation to ensure the heat dissipation effect.

[0045] By arranging a hydraulically controlled valve, a waterproof box, a sliding part and a pressure sensor, it can be achieved that when the water level at the first heat dissipation pipe or the second heat dissipation pipe drops, the sliding part will be lowered synchronously. When the sliding part triggers the pressure sensor, the corresponding hydraulically controlled valve can be closed, so that the first heat dissipation pipe or the second heat dissipation pipe that is not in sufficient contact with water cuts off the flow of the internal heat exchange medium.

[0046] A buoyancy body, a gravity body and a connecting body are provided. The buoyancy body can receive the buoyancy of water in the water tank, and the gravity body can increase the overall weight of the sliding part, so that when the water level is lowered, the sliding part can be pressed down normally to trigger the pressure sensor.

[0047] The waterproof box is set to a columnar shape and the buoyancy body is placed outside the waterproof box, which can reduce the space occupied by the waterproof box and the buoyancy body in the water storage tank. At the same time, the buoyancy body moves more smoothly when subjected to buoyancy.

[0048] A vent hole is arranged at the bottom of the waterproof box, and the vent hole is connected to the outside of the water storage tank, so that the air pressure in the waterproof box can be balanced, and the sliding part can slide more smoothly and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0050] Figure 1 This is a schematic diagram of the structure of a washing and sweeping vehicle according to an embodiment of the present invention;

[0051] Figure 2 A schematic diagram of the cooling principle of the washing and sweeping vehicle according to an embodiment of the present invention;

[0052] Figure 3 This is a schematic diagram of the internal structure of the second compartment according to an embodiment of the present invention;

[0053] Figure 4 It is a partial structural schematic diagram of a cutting device according to an embodiment of the present invention;

[0054] Figure 5 It is a partial cross-sectional schematic diagram of a cutting device according to an embodiment of the present invention;

[0055] Figure 6 This is a power diagram of the washing and sweeping vehicle described in an embodiment of the present invention.

[0056] Description of reference numerals:

[0057] 1. Hydraulic retarder;

[0058] 2. Water storage tank;

[0059] 3. The first radiator;

[0060] 301, first heat dissipation pipe; 302, second heat dissipation pipe; 303, cut-off device; 3031, hydraulic control valve; 3032, waterproof box; 30321, vent hole; 3033, sliding part; 30331, buoyancy body; 30332, gravity body; 30333, connector; 3034, pressure sensor;

[0061] 4. Heat exchanger;

[0062] 5. The first circulation pump;

[0063] 6. The first expansion tank;

[0064] 7. Engine;

[0065] 8. Gearbox;

[0066] 9. Transfer case;

[0067] 10. Front wheel;

[0068] 11. Rear wheel;

[0069] 12. Second circulation pump;

[0070] 13. Second radiator;

[0071] 14. Thermostat;

[0072] 15. Second expansion tank;

[0073] 16. Vehicle body;

[0074] 17. The first compartment;

[0075] 18. The second compartment. DETAILED DESCRIPTION

[0076] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0077] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0078] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0079] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0080] The present embodiment relates to a mining explosion-proof underground steep slope road sweeper to improve the cooling effect of the hydraulic retarder, thereby improving the safety of the sweeper when traveling underground.

[0081] In terms of overall structure, refer to Figure 1 and Figure 3 As shown, a mining explosion-proof underground steep slope road sweeper of this embodiment includes a hydraulic retarder 1, and a water tank 2 for storing water for washing the road surface, and also includes a heat exchanger 4, a first radiator 3, a first circulation pump 5 and a first expansion tank 6. The heat exchanger 4 is arranged in the thermal oil tank of the hydraulic retarder 1, and forms a heat exchange with the oil in the thermal oil tank, and a heat exchange medium flows in the heat exchanger 4. The first radiator 3 is arranged in the water tank 2, and forms a heat exchange with the water in the water tank 2. The first circulation pump 5 is connected to the heat exchanger 4 and the first radiator 3 in a closed loop in sequence to form a first cycle to circulate and transport the heat exchange medium. The first expansion tank 6 is connected to both ends of the first radiator 3.

[0082] As set above, a mining explosion-proof underground steep slope road washing and sweeping vehicle of this embodiment is provided with a heat exchanger 4, a first radiator 3 and a first circulation pump 5, and the first radiator 3 is provided in a water storage tank 2, so that the water in the water storage tank 2 can be used to cool the heat exchange medium. The heat exchange medium absorbs the heat of the oil in the hydraulic retarder 1 in the heat exchanger 4, and transfers the heat to the water in the water storage tank 2 after flowing to the first radiator 3, so that the hydraulic retarder 1 can be cooled independently, without occupying the cooling system of the washing and sweeping vehicle itself, which is more energy-saving, improves the cooling effect of the hydraulic retarder 1, and thus improves the safety of the washing and sweeping vehicle when driving underground. The first expansion tank 6 can balance the liquid pressure of the heat exchange medium of the first circulation, and at the same time play the function of exhausting, so that the circulation of the heat exchange medium is more stable.

[0083] Based on the above overall introduction, specifically, the washing and sweeping vehicle of this embodiment includes a vehicle body 16, a first compartment 17, a second compartment 18, a front wheel 10 and a rear wheel 11 in appearance. The first compartment 17 and the second compartment 18 are both arranged on the vehicle body 16. The first compartment 17 is located on the side close to the front of the vehicle and can accommodate the power device of the washing and sweeping vehicle. A water tank 2 and a garbage bin are arranged in the second compartment 18. The water tank 2 is used to store water for washing the road surface by the washing and sweeping vehicle, and the garbage bin is used to collect garbage and sewage sucked by the washing and sweeping vehicle. All the various parts used in the washing and sweeping vehicle that involve explosion-proof requirements are mine safety certified parts to ensure the safe use of the washing and sweeping vehicle underground.

[0084] Regarding the cooling method of the engine 7 on the washing and sweeping vehicle, the washing and sweeping vehicle of this embodiment includes a second circulation pump 12, a second radiator 13, a thermostat 14 and a second expansion tank 15. The outlet of the second circulation pump 12 is connected to the inlet of the cooling pipeline in the engine 7. The outlet of the second radiator 13 is connected to the inlet of the second circulation pump 12. The inlet of the thermostat 14 is connected to the outlet of the cooling pipeline in the engine 7, and the outlet is connected to the inlet of the second radiator 13 and the inlet of the second circulation pump 12. The engine 7, the thermostat 14, and the second circulation pump 12 are connected in a closed loop in sequence to form a second circulation of the heat exchange medium, and the engine 7, the thermostat 14, the second radiator 13, and the second circulation pump 12 are connected in a closed loop in sequence to form a third circulation of the heat exchange medium. The second expansion tank 15 is connected to both ends of the second radiator 13.

[0085] Among them, by setting the second circulation pump 12, the second radiator 13, and the thermostat 14, the second circulation and the third circulation can be formed. When the temperature of the heat exchange medium after passing through the engine 7 is low, only the second circulation works, and the heat exchange medium is naturally cooled; when the temperature of the heat exchange medium after passing through the engine 7 is high, the thermostat 14 can enable the third circulation and distribute the heat exchange medium flow of the second circulation and the third circulation to achieve a more stable cooling effect on the engine 7; the second expansion tank 15 is set at both ends of the second radiator 13, which can balance the liquid pressure of the heat exchange medium of the third circulation, and at the same time play the function of exhaust, so that the heat exchange medium circulation is more stable. The second radiator 13 can be a radiator in the form of air cooling or water cooling. In this embodiment, the second radiator 13 is an air cooling radiator.

[0086] In order to enable the heat exchanger 4 to dissipate heat by utilizing the second cycle and the third cycle, the heat exchanger 4 can be connected between the cooling pipe outlet of the engine 7 and the inlet of the thermostat 14 to be incorporated into the second cycle or the third cycle. The heat exchanger 4 is connected between the engine 7 and the thermostat 14, and the heat exchanger can be selectively connected to the second cycle or the third cycle, so that the second radiator 13 can cool the heat exchanger 4 when the cooling demand of the hydraulic retarder 1 is not high. A valve is provided between the heat exchanger 4 and the first cycle, and a valve is also provided between the heat exchanger 4 and the second cycle and the third cycle. By opening and closing the valve, the heat exchanger 4 can be connected to different heat exchange medium cooling circuits.

[0087] For the purpose of stabilizing the heat dissipation effect of the first radiator 3, the first radiator 3 is arranged at the bottom of the water tank 2. The heat exchanger 4 is arranged at the bottom of the water tank 2, and the heat exchanger 4 can be cooled even when the water level in the water tank 2 is low, so that the water in the water tank 2 can be better utilized, and the cooling effect of the wash water on the heat exchanger 4 can be ensured.

[0088] Among them, with regard to the specific structural form of the first radiator 3, the first radiator 3 of this embodiment includes a first radiator tube 301, a second radiator tube 302 and a cut-off device 303. The first radiator tube 301 is arranged at the front end of the water storage tank 2. The second radiator tube 302 is arranged at the rear end of the water storage tank 2. The cut-off device 303 is provided corresponding to each of the first radiator tube 301 and the second radiator tube 302, and can cut off the flow of the heat exchange medium in the first radiator tube 301 or the second radiator tube 302.

[0089] It is understandable that the first radiator 3 is provided with a first heat dissipation pipe 301 and a second heat dissipation pipe 302, which can be respectively provided at the front and rear ends of the water tank 2. When the washing and sweeping vehicle is traveling on a steep slope, if the amount of water in the water tank 2 is low, the first heat dissipation pipe 301 or the second heat dissipation pipe 302 on one side may not be in full contact with water. Through the control of the cut-off device 303, the first heat dissipation pipe 301 and / or the second heat dissipation pipe 302 can be selected for heat dissipation. When the washing and sweeping vehicle is traveling uphill, the water level at the rear end of the water tank 2 is high, and the second heat dissipation pipe 302 can be used for heat dissipation; when the washing and sweeping vehicle is traveling downhill, the water level at the front end of the water tank 2 is high, and the first heat dissipation pipe 301 is used for heat dissipation to ensure the heat dissipation effect.

[0090] Further, see Figure 2 , Figure 4 and Figure 5 As shown, the cut-off device 303 of this embodiment includes a hydraulically controlled valve 3031, a waterproof box 3032, a sliding part 3033 and a pressure sensor 3034. The hydraulically controlled valve 3031 is arranged on the first heat dissipation tube 301 or the second heat dissipation tube 302. The waterproof box 3032 is arranged on the inner bottom wall of the water storage tank 2, and has an inner cavity isolated from the inner space of the water storage tank 2. The sliding part 3033 is slidably arranged on the waterproof tube, partially penetrates into the waterproof box 3032, and has a density less than water. The pressure sensor 3034 is arranged in the waterproof box 3032, and when the sliding part 3033 drops due to the decrease in water level, the pressure sensor 3034 can be triggered to close the hydraulically controlled valve 3031.

[0091] By providing the hydraulically controlled valve 3031, the waterproof box 3032, the sliding part 3033 and the pressure sensor 3034, it can be achieved that when the water level at the first heat dissipation tube 301 or the second heat dissipation tube 302 drops, the sliding part 3033 drops synchronously, and when the sliding part 3033 triggers the pressure sensor 3034, the corresponding hydraulically controlled valve 3031 can be closed, so that the first heat dissipation tube 301 or the second heat dissipation tube 302 that is not in sufficient contact with water cuts off the flow of the internal heat exchange medium.

[0092] Specifically, the sliding part 3033 includes a buoyancy body 30331, a gravity body 30332 and a connecting body 30333. The buoyancy body 30331 contacts the water in the water storage tank 2. The gravity body 30332 is arranged in the waterproof box 3032 and can contact the pressure sensor 3034. The connecting body 30333 is connected between the buoyancy body 30331 and the gravity body 30332 and is slidably and sealedly connected to the waterproof box 3032. The buoyancy body 30331, the gravity body 30332 and the connecting body 30333 are arranged, the buoyancy body 30331 can receive the buoyancy of the water in the water storage tank 2, and the gravity body 30332 can increase the overall weight of the sliding part 3033, so that when the water level is lowered, the sliding part 3033 can normally press down to trigger the pressure sensor 3034.

[0093] Among them, the waterproof box 3032 is columnar, and the buoyancy body 30331 is sleeved outside the waterproof box 3032. Setting the waterproof box 3032 to be columnar and sleeve the buoyancy body 30331 outside the waterproof box 3032 can reduce the space occupied by the waterproof box 3032 and the buoyancy body 30331 in the water storage tank 2, and the buoyancy body 30331 moves more smoothly when subjected to buoyancy. Specifically, the top of the waterproof box 3032 is truncated cone-shaped, and the connector 30333 passes through the center of the top of the waterproof box 3032. The main body of the connector 30333 is in the shape of a cylindrical shaft, the bottom end is connected to the gravity body 30332, and the top end is evenly provided with three branches, each branch is downwardly connected to the buoyancy body 30331. The main body of the connector 30333 is also provided with a cylindrical limit block so that the connector 30333 will not move upward excessively.

[0094] Secondly, the pressure sensor 3034 is arranged at the inner bottom of the waterproof box 3032, and can be a mechanical button type, a capacitive pressure type or a resistive pressure type. In this embodiment, the pressure sensor 3034 is a mechanical button type pressure sensor 3034. The washing and sweeping vehicle is provided with a controller, and the controller is electrically connected to the pressure sensor 3034 and the hydraulic control valve 3031. When the water level is low, the sliding part 3033 descends to trigger the pressure sensor 3034, and the pressure sensor 3034 sends an electrical signal to the controller, and the controller closes the hydraulic control valve 3031, so that the heat exchange medium in the corresponding first heat dissipation pipe 301 or the second heat dissipation pipe 302 is in an open circuit state.

[0095] In order to reduce the influence of water pressure on the normal sliding of the sliding part 3033, a vent hole 30321 is provided at the bottom of the waterproof box 3032, and the vent hole 30321 is connected to the outside of the water storage tank 2. The vent hole 30321 is provided at the bottom of the waterproof box 3032, and the vent hole 30321 is connected to the outside of the water storage tank 2, which can balance the air pressure in the waterproof box 3032 and make the sliding of the sliding part 3033 smoother and more stable.

[0096] As for the driving mode of the washing and sweeping vehicle, refer to Figure 6As shown, the washing and sweeping vehicle of this embodiment also includes a gearbox 8 and a transfer case 9, and the gearbox 8 is matched with the engine 7. The transfer case 9 is connected to the gearbox 8 and transmits the power of the engine 7 to the front wheels 10, the rear wheels 11 and the hydraulic retarder 1 of the washing and sweeping vehicle, and can switch the driving mode of the washing and sweeping vehicle to four-wheel drive or rear-wheel drive. The transfer case 9 is provided on the washing and sweeping vehicle. The transfer case 9 is connected to the gearbox 8, the front wheels 10, the rear wheels 11, and the hydraulic retarder 1 as a transmission device, and can distribute the power generated by the engine 7, so as to realize the switching between the rear-wheel drive mode and the four-wheel drive mode of the washing and sweeping vehicle, which is conducive to driving on a large slope road surface underground and has better safety performance.

[0097] In the present embodiment, a mining explosion-proof underground large-slope road sweeper can achieve independent cooling of the hydraulic retarder 1 by setting the first cycle, and the heat exchanger 4 can also be connected to the cooling cycle of the engine 7, that is, the heat exchanger 4 can be connected to the second cycle and the third cycle to achieve cooling, and the cooling method of the heat exchange medium in the heat exchanger 4 can be flexibly selected to obtain an efficient and energy-saving cooling effect. The first heat dissipation pipe 301, the second heat dissipation pipe 302 and the cut-off device 303 are provided, so that when there is insufficient water in the water tank 2, the first radiator 3 can have an efficient heat dissipation effect when the sweeper is going uphill or downhill.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mining explosion-proof underground steep slope road sweeper, comprising a hydraulic retarder (1) and a water tank (2) for storing water for washing the road surface, characterized in that: include: A heat exchanger (4) is arranged in the heat transfer oil tank of the hydraulic retarder (1) and performs heat exchange with the oil in the heat transfer oil tank, and a heat exchange medium flows in the heat exchanger (4); A first radiator (3) is arranged in the water storage tank (2) and performs heat exchange with water in the water storage tank (2); A first circulation pump (5) is connected to the heat exchanger (4) and the first radiator (3) in a closed loop in sequence to form a first circulation, so as to circulate and transport the heat exchange medium; The first expansion tank (6) is connected to both ends of the first radiator (3).

2. The explosion-proof underground large-slope road sweeper for mining according to claim 1 is characterized in that: include: Engine (7); A gearbox (8) matched with the engine (7) The transfer case (9) is connected to the gearbox (8) and transmits the power of the engine (7) to the front wheels (10), rear wheels (11) and the hydraulic retarder (1) of the washing and sweeping vehicle, so as to switch the driving mode of the washing and sweeping vehicle to four-wheel drive or rear-wheel drive.

3. The explosion-proof underground large-slope road sweeper for mining according to claim 2 is characterized in that: include: A second circulating pump (12), the outlet of which is connected to the inlet of a cooling pipeline in the engine (7); A second radiator (13), the outlet of which is connected to the inlet of the second circulation pump (12); The thermostat (14) has an inlet connected to an outlet of a cooling pipe in the engine (7), and an outlet connected to an inlet of the second radiator (13) and an inlet of the second circulation pump (12); the engine (7), the thermostat (14), and the second circulation pump (12) are connected in a closed loop in sequence to form a second circulation of a heat exchange medium; the engine (7), the thermostat (14), the second radiator (13), and the second circulation pump (12) are connected in a closed loop in sequence to form a third circulation of a heat exchange medium; The second expansion tank (15) is connected to both ends of the second radiator (13).

4. The explosion-proof underground steep slope road sweeper for mining according to claim 3, characterized in that: The heat exchanger (4) can be connected between the outlet of the cooling line of the engine (7) and the inlet of the thermostat (14) to be incorporated into the second cycle or the third cycle.

5. The explosion-proof underground large-slope road sweeper for mining according to claim 1 is characterized by: The first radiator (3) is arranged at the bottom of the water storage tank (2).

6. The explosion-proof underground large-slope road sweeper for mining according to claim 5, characterized in that: The first radiator (3) comprises: A first heat dissipation pipe (301) is arranged at the front end of the water storage tank (2); A second heat dissipation pipe (302) is arranged at the rear end of the water storage tank (2); A cut-off device (303) is provided corresponding to each of the first heat dissipation tube (301) and the second heat dissipation tube (302), and is capable of cutting off the flow of the heat exchange medium in the first heat dissipation tube (301) or the second heat dissipation tube (302).

7. The explosion-proof underground large-slope road sweeper for mining according to claim 6, characterized in that: The cutting device (303) comprises: A hydraulically controlled valve (3031) is arranged on the first heat dissipation tube (301) or the second heat dissipation tube (302); A waterproof box (3032), arranged on the inner bottom wall of the water storage tank (2), having an inner cavity isolated from the inner space of the water storage tank (2); A sliding part (3033) is slidably arranged on the waterproof tube, partially penetrates into the waterproof box (3032), and has a density less than water; The pressure sensor (3034) is arranged in the waterproof box (3032), and when the sliding part (3033) drops due to the decrease in water level, the pressure sensor (3034) can be triggered to close the hydraulic control valve (3031).

8. The explosion-proof underground large-slope road sweeper for mining according to claim 7, characterized in that: The sliding part (3033) comprises: A buoyancy body (30331) in contact with water in the water storage tank (2); A gravity body (30332), disposed in the waterproof box (3032) and capable of contacting the pressure sensor (3034); The connecting body (30333) is connected between the buoyancy body (30331) and the gravity body (30332), and is slidably and sealingly connected to the waterproof box (3032).

9. The explosion-proof underground steep slope road sweeper for mining according to claim 8, characterized in that: The waterproof box (3032) is columnar, and the buoyancy body (30331) is sleeved outside the waterproof box (3032).

10. The explosion-proof underground steep slope road sweeper for mining according to claim 7, characterized in that: The bottom end of the waterproof box (3032) is provided with a vent hole (30321), and the vent hole (30321) is connected to the outside of the water storage tank (2).

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