Container heating device, heating capacity control system and method and mine car

Abstract

The invention discloses a container heating device, a heating capacity control system and method and a mine car. The container heating device comprises a container, a heating channel and an adjustable heating device. The container is used for containing materials; the heating channel is located below the container and used for conveying high-temperature gas and heating a bottom plate of the container. The adjustable heating device is located below the heating channel and provided with at least one high-temperature gas inlet communicated with an engine exhaust pipe, at least one container heating channel opening communicated with the heating channel and at least one exhaust port communicated with outside air. The adjustable heating device can automatically adjust the flow of hot gas entering the heating channel from high-temperature gas exhausted from the engine exhaust pipe and the flow of hot gas exhausted to the outside according to the environment temperature, the types of materials and the temperature of the bottom plate of the container, so that the heating temperature of the container is adjusted, and the adjustable heating device has the advantages of being simple in structure, high in applicability and durable in use.

Description

Technical Field

[0001] The invention relates to a cargo box heating device, a heating amount control system and a method, and belongs to the field of mining machinery. Background Art

[0002] my country's open-pit mining areas are mainly distributed in the northwest region. The severe cold weather in autumn and winter causes the excavated materials to be frozen. During the unloading process of heavy mining trucks fully loaded with materials, the materials are prone to stick to the inner wall of the cargo box. In order to solve the above problem, a cargo box heating device is often installed at the bottom of the cargo box. The cargo box heating device transports the high-temperature gas generated by the engine to the cargo box heating channel, and the heating channel transports the high-temperature gas to the cargo box bottom plate, thereby heating the cargo box.

[0003] However, the current cargo box heating device cannot adjust the amount of cargo box heating according to the ambient temperature. Even if the cargo box heating function is not needed, the cargo box heating device is always in the open state. When the cargo box is heated for a long time, the high-temperature gas will liquefy in the cargo box heating channel. Long-term contact with water and high-temperature gas will easily cause corrosion problems on the cargo box bottom plate and heating channel. At the same time, the corresponding cargo box heating temperature is different depending on the type of ore. Taking coal mines as an example, the cargo box is continuously heated at a high temperature, and the temperature exceeds the ignition point of the raw coal, which is easy to cause a fire. The existing cargo box heating device cannot adjust the amount of cargo box heating.

[0004] Conventional cargo box heating devices such as Figure 1 As shown, it mainly includes a mobile high-temperature gas interface 100, a guide bolt 200, a spring 300, a limit nut 400, a heating box 500, an exhaust pipe 600, and an air intake pipe 700. The cargo box is frequently lifted, and the cargo box heating port contacts and presses down with the mobile high-temperature gas interface 100, the spring 300 is compressed, and the guide bolt 200 welded on the mobile high-temperature gas interface 100 reciprocates at the interface on the heating box 500. The limit bolt 200 is easily worn, fatigued, and fractured by the heavy load of the cargo box in multiple directions for a long time. At the same time, the existing cargo box heating cannot control the exhaust gas flow rate of the exhaust pipe 600 and the gas output of the high-temperature gas interface 100, and cannot customize the control of the cargo box heating amount according to the external ambient temperature. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a cargo box heating device, which can automatically calculate the cargo box heating adaptation temperature according to the type of material and the external ambient temperature, and provide real-time feedback from the cargo box bottom plate temperature sensor, automatically adjusting the cargo box heating amount and the heat discharged to the outside, and has the advantages of simple structure, strong applicability and durability.

[0006] The present invention is implemented according to the following technical solutions:

[0007] In a first aspect, the present invention provides a cargo box heating device, comprising:

[0008] Cargo box, used to hold materials;

[0009] A heating channel, located below the cargo box, for conveying high-temperature gas to heat the cargo box bottom plate;

[0010] The adjustable heating device is located below the heating channel and has at least one high-temperature gas inlet connected to the engine exhaust pipe, at least one cargo box heating channel opening connected to the heating channel, and at least one exhaust port connected to the outside air; the adjustable heating device can automatically adjust the hot gas flow rate of the high-temperature gas discharged from the engine exhaust pipe entering the heating channel and the hot gas flow rate discharged to the outside according to the ambient temperature, material type, and cargo box bottom plate temperature, thereby realizing the adjustment of the cargo box heating temperature.

[0011] In some embodiments, the adjustable heating device includes a heating box and a heating air volume control device; the outer plate of the heating box is provided with at least one high-temperature gas inlet, a cargo box heating channel opening and an exhaust port; the heating air volume control device realizes the control of the heating amount of the cargo box, and includes a telescopic sealing cover, a resettable sealing plate and a winch component; the telescopic sealing cover is located in the heating box and fixed at the cargo box heating channel opening, and the telescopic sealing cover is used to increase or decrease the opening interface of the cargo box heating channel opening by telescopic movement, thereby adjusting the hot air flow of high-temperature gas entering the heating channel The reset sealing plate is located outside the heating box and is hinged at the exhaust port, and the opening interface of the exhaust port is increased or decreased by flipping the reset sealing plate, thereby adjusting the hot gas flow discharged to the outside by the high-temperature gas; the hoisting component includes a rotating component with forward and reverse rotation and a pull rope component, and the rotating component is installed on the outer plate of the heating box; the pull rope component is arranged in the heating box, one free end of which is wound around the rotating component, and the other free end is first connected to the telescopic sealing cover and then continues to extend and is connected to the reset sealing plate, so as to realize the linkage between the telescopic sealing cover and the reset sealing plate.

[0012] In some embodiments, the cargo box heating channel opening is arranged on the top plate of the heating box, and an elastic gas joint coaxially arranged therewith extends vertically upward around the periphery of the cargo box heating channel opening; after the cargo box is unloaded, it is pressed down to the elastic gas joint so that the upper top surface of the elastic gas joint is tightly fitted on the heating channel.

[0013] In some embodiments, the flexible gas joint comprises:

[0014] The high-temperature gas heating pipe comprises a lower cylinder and a lower limit plate, wherein the lower cylinder extends vertically upward around the periphery of the cargo box heating passage opening, and the lower limit plate is fixed to the middle area of ​​the outer side wall of the lower cylinder;

[0015] A high-temperature gas joint, comprising an upper cylinder and an upper limit plate, wherein the upper cylinder is inserted into the lower cylinder, and the upper limit plate is fixed to the top end of the outer side wall of the upper cylinder;

[0016] A spring is sleeved on the upper and lower cylinders located between the lower limit plate and the upper limit plate;

[0017] The displacement limiting component is inserted between the lower cylinder and the upper cylinder and is used to limit the upward movement of the high-temperature gas joint under the lifting action of the spring.

[0018] In some embodiments, the lower cylinder is provided with a through-type radial circular hole, and the upper cylinder is provided with a through-type radial oblong hole; the displacement limiting component is a pin shaft and a cotter pin. When the radial circular hole is located in the radial oblong hole, the pin shaft is passed through the radial circular hole and the radial oblong hole, and a cotter pin is inserted into the end of the pin shaft to limit the axial position of the pin shaft; the length of the radial oblong hole is the up and down movement distance of the high-temperature gas joint in the high-temperature gas heating tube.

[0019] In some embodiments, the exhaust port is arranged on the side plate of the heating box, and a high-temperature gas exhaust pipe coaxially arranged therewith extends horizontally outward around the periphery of the exhaust port, and the outer end of the high-temperature gas exhaust pipe is an oblique cut inclined toward the heating box; the reset sealing plate includes an exhaust port connecting plate, an exhaust control plate, a tension spring mounting seat and a tension spring; the exhaust port connecting plate is fixed at the top of the oblique cut; the exhaust control plate is connected to the exhaust port connecting plate by a hinge component, and the exhaust control plate can be flipped around the hinge point; the tension spring mounting seat is fixed to the outer facade of the exhaust port connecting plate; the tension spring is hinged between the exhaust control plate and the tension spring mounting seat, when the tension spring is contracted to the shortest state, the exhaust control plate is in a horizontal state, and the exhaust port is in a maximum open state at this time, and when the tension spring is stretched to the longest state, the exhaust control plate is attached to the exhaust port, and the exhaust port is in a closed state at this time; the flipping action of the exhaust control plate toward the exhaust port is realized by the traction action of the pull rope component located in the heating box.

[0020] In some embodiments, the telescopic sealing cover comprises:

[0021] A pair of guide rails facing each other are installed in the heating box near the opening of the cargo box heating channel;

[0022] A fixed sealing cover, fixedly mounted on the guide rail close to the rotating component;

[0023] A multi-stage movable sealing cover is stacked in the fixed sealing cover, and both ends of the movable sealing cover are respectively inserted into the slide grooves on the corresponding guide rails through the sealing cover support feet;

[0024] The sealing cover connecting rod assembly is connected to the multi-stage movable sealing cover to realize linkage of the multi-stage movable sealing cover, thereby realizing that the multi-stage movable sealing cover synchronously slides horizontally to the left on the guide rail and then gradually overlaps to increase the opening interface of the cargo box heating channel opening, or realizing that the multi-stage movable sealing cover synchronously slides horizontally to the right on the guide rail and then gradually separates to reduce the opening interface of the cargo box heating channel opening.

[0025] In some embodiments, the sealing cover connecting rod assembly is a scissor-type telescopic structure as a whole, which is composed of multiple connecting rods hinged in an X-shaped structure; a connecting rod fixed base arranged in a straight line is fixed on the middle area of ​​the fixed sealing cover and the multi-stage movable sealing cover; the multiple hinge points in the middle area of ​​the scissor-type telescopic structure correspond to a connecting rod fixed base one by one, and the corresponding hinge points and the connecting rod fixed base are hinged together by screws respectively; the outermost movable sealing cover is connected to the pull rope component through a traction connecting rod, and the pull rope component drives the outermost movable sealing cover to move laterally on the guide rail through the traction connecting rod, and the outermost movable sealing cover relies on the sealing cover connecting rod assembly to drive the remaining movable sealing covers to move synchronously laterally.

[0026] In some embodiments, the rotating component includes a rope-twisting device and a hydraulic motor driving the rope-twisting device, the rope-twisting device is fixed on a rope-twisting device support, and the rope-twisting device support is fixed on a heating box; the pulling rope component is a steel wire rope, one end of the steel wire rope is connected to the rope-twisting device, and the other end of the steel wire rope passes through a steering component for steering and is connected to the exhaust control plate in the reset sealing plate, and the multi-stage movable sealing cover in the telescopic sealing cover is also connected to the steel wire rope through a traction connecting rod; when the hydraulic motor rotates forward, the hydraulic motor drives the rope-twisting device to retract, and the steel wire rope drives the telescopic sealing cover to contract to increase the opening interface of the cargo box heating channel port and drives the exhaust control plate to flip inward to reduce the opening interface of the exhaust port, thereby increasing the heating temperature of the cargo box; when the hydraulic motor reverses, the hydraulic motor drives the rope-twisting device to release, and the steel wire rope drives the telescopic sealing cover to extend outward to reduce the opening interface of the cargo box heating channel port and drives the exhaust control plate to flip outward to increase the opening interface of the exhaust port, thereby reducing the heating temperature of the cargo box.

[0027] In some embodiments, the steering component comprises:

[0028] A steering rod, the top end of which is fixed in a high-temperature gas exhaust pipe located outside the heating box and arranged coaxially with the exhaust port;

[0029] The guide wheel is rotatably supported at the bottom of the steering rod. The steel wire rope led out from the rope twisting device extends transversely through the guide wheel, is turned obliquely downward, and then is connected to the exhaust control board.

[0030] In some embodiments, when an exhaust port is added to the heating box, a resettable sealing plate and a hoisting component used in conjunction with the exhaust port are added to the heating air volume control device; wherein the other free end of the pull rope component in the hoisting component is directly connected to the resettable sealing plate.

[0031] In some embodiments, the heating channels are evenly distributed on the bottom plate of the cargo box, and the adjustable heating device is located in the middle of the heating channels on the front plate of the cargo box.

[0032] In a second aspect, the present invention provides a mining car, comprising the above-mentioned cargo box heating device.

[0033] In a third aspect, the present invention provides a cargo box heating control system, comprising:

[0034] The electromagnetic reversing valve is used to control the hydraulic motor to realize forward and reverse movement, thereby driving the rope-twisting device to realize the retraction and release of the wire rope to realize the control of the cargo box heating;

[0035] at least one ambient temperature sensor, mounted on the vehicle, for detecting ambient temperature;

[0036] At least one cargo box temperature sensor, mounted on the cargo box bottom plate, for detecting the temperature of the cargo box bottom plate;

[0037] The operation panel, as a user input device, is used to send command parameters;

[0038] The controller is used to receive signals from the external temperature sensor, the cargo box temperature sensor and the operation panel, and issue action execution element signals. The controller stores cargo box heating temperature data of different materials at different external temperatures, and serves as a basis for realizing cargo box heating control;

[0039] The communication device is connected to the controller for transmitting the cargo box bottom plate temperature and the external environment temperature to the operation panel, and is also used to transmit the user-specified cargo box heating temperature to the controller.

[0040] In a fourth aspect, the present invention provides a method for controlling the heating amount of a cargo box, comprising the following steps:

[0041] Step 1: The user can select two cargo box heating input modes:

[0042] Mode 1: Manual heating mode, the user inputs the specified cargo box heating temperature according to the value of the external temperature sensor and sends it to the controller for execution;

[0043] Mode 2: Automatic heating mode, which automatically calculates the heating temperature of the cargo box according to the material type and external ambient temperature and sends it to the controller for execution;

[0044] Step 2: If the user selects the automatic heating mode, the control method of the cargo box heating device in this mode is:

[0045] The user selects the type of material, and the controller obtains the ambient temperature sensor data T2, and compares the ambient temperature sensor temperature with the stored data to obtain the matching adaptive cargo box temperature T0;

[0046] The adapted cargo box temperature T0 is compared with the cargo box bottom plate temperature sensor T1. When the adapted cargo box temperature T0 is greater than the cargo box bottom plate temperature sensor T1, it indicates that the cargo box needs to be heated. The controller increases the heating amount of the cargo box heating device to the cargo box heating channel until the cargo box bottom plate temperature sensor T1 is equal to the adapted cargo box temperature T0.

[0047] When the adapted cargo box temperature T0 is less than the cargo box bottom plate temperature sensor T1, it means that the cargo box heating amount needs to be reduced. The controller increases the flow of high-temperature gas to the outside by controlling the cargo box heating device. Correspondingly, the heat to the cargo box heating channel decreases until the cargo box bottom plate temperature sensor T1 is equal to the adapted cargo box temperature T0.

[0048] Step 3: If the user selects the manual heating mode, the control method of the cargo box heating device in this mode is:

[0049] When the user chooses to select the cargo box heating temperature according to the value of the external environment temperature sensor T2, the specified cargo box heating temperature T0 is directly compared with the cargo box temperature sensor temperature T1. When the specified cargo box temperature T0 is greater than the cargo box bottom plate temperature sensor T1, it means that the cargo box needs to be heated. The controller increases the heating amount of the cargo box heating device to the cargo box heating channel until the cargo box bottom plate temperature sensor T1 is equal to the specified cargo box temperature T0.

[0050] When the specified cargo box temperature T0 is lower than the cargo box bottom plate temperature sensor T1, it indicates that the cargo box heating amount needs to be reduced. The controller increases the flow of high-temperature gas from the cargo box heating device to the outside world. Correspondingly, the heat flowing to the cargo box heating channel decreases until the cargo box bottom plate temperature sensor T1 is equal to the specified cargo box temperature T0.

[0051] Beneficial effects of the present invention:

[0052] 1. The connection between the heating air volume control device and the cargo box heating channel adopts a pin shaft with a limit hole. This connection method can effectively ensure the connection between the telescopic high-temperature gas joint and the cargo box heating channel to ensure the transmission of high-temperature gas. At the same time, this connection method solves the problem of wear, fatigue and fracture of the connecting bolts in the traditional connection method.

[0053] 2. The heating air volume control device can automatically control the air volume leading to the cargo box heating channel and the air volume of the exhaust duct according to the external ambient temperature. Under the premise of ensuring that the heating temperature meets the requirements of non-stick materials in the cargo box, it provides an appropriate amount of heating gas. On the one hand, it reduces the rust problem of the cargo box heating channel caused by the cold liquefaction of gas in the local space caused by the passage of high-temperature gas into the cargo box heating channel. On the other hand, the appropriate heat source is transferred to the inner wall of the cargo box, which can reduce the temperature difference between the inner wall of the cargo box and the frozen material, reduce the water vapor formed by the cold liquefaction of air, and slow down the rust rate of the inner wall of the cargo box. At the same time, the appropriate heating temperature can keep the material and the inner wall of the cargo box in a relatively clean state, reducing the mud stains caused by the thawing of materials due to high temperature.

[0054] 3. At present, the cargo box heating device cannot adjust the heating amount of the cargo box according to the ambient temperature. Even if the cargo box heating function is not needed, the cargo box heating device is always in the open state. For example, in coal mines, the cargo box is heated continuously at high temperatures, and the temperature exceeds the ignition point of the raw coal, which can easily lead to fire. The existing cargo box heating device cannot adjust the heating amount of the cargo box, which can solve the above risks.

[0055] 4. The heating air volume control device can simultaneously control the amount of hot air to the outside and the amount of hot air in the cargo box heating channel. The cargo box temperature is sensitively adjusted and the overall device structure is simple and reliable.

[0056] 5. The control system automatically matches the cargo box heating temperature based on the material and ambient temperature as input parameters. The control method of adjusting the cargo box temperature by connecting the cargo box bottom plate temperature sensor to the adapted cargo box temperature has the advantages of intelligence and customization.

[0057] 6. The hydraulic motor is used as the actuator in the cargo box heating field, which has the advantages of effective adaptation to high temperature resistance, safety and reliability. The wire rope control method is adopted, which has the advantages of simple structure and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings are part of the present invention and 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, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0059] In the attached picture:

[0060] Figure 1 It is a schematic diagram of a cargo box heating device of an existing solution;

[0061] Figure symbols: 100: high temperature gas interface; 200: guide bolt; 300: spring; 400: limit nut; 500: heating box; 600: exhaust pipe; 700: intake pipe.

[0062] Figure 2 It is a schematic diagram of the cargo box heating device of the present invention;

[0063] Figure 3 It is a schematic diagram of the adjustable heating device of the present invention;

[0064] Figure 4 A schematic diagram of the high temperature gas flow direction of the adjustable heating device of the present invention;

[0065] Figure 5 is a cross-sectional view of the adjustable heating device of the present invention;

[0066] Figure 6 It is a schematic diagram of a heating air volume control device of the present invention;

[0067] Figure 7 A partial view of the telescopic sealing cover of the present invention;

[0068] Figure 8 A partial view of the guide rail of the present invention connected to the multi-stage movable sealing cover;

[0069] Fig. 9 It is a schematic diagram of the invented high temperature gas joint;

[0070] Fig.10 A schematic diagram of the exhaust control panel of the invention;

[0071] Fig.11 This is a block diagram of the cargo box heating control system of the present invention;

[0072] Fig.12 Select a logic schematic for the invented cargo box heating mode;

[0073] Fig.13 The process of the invented cargo box heating control method Figure 1 ;

[0074] Fig.14 The process of the invented cargo box heating control method Figure 2 .

[0075] Figure symbols: 100: adjustable heating device, 200: heating channel, 300: cargo box; 1: high-temperature gas connector; 1.1: radial oblong hole; 2: spring; 3: high-temperature gas heating tube; 4: pin shaft; 5: cotter pin; 6: high-temperature gas exhaust pipe; 7: heating air volume control device; 7.1: rope twisting device support; 7.2: rope twisting device; 7.3: hydraulic motor; 7.4: fixed sealing cover; 7.5: first-level movable sealing cover; 7.6: second-level movable sealing cover; 7.7: third-level movable sealing cover; 7.8: fourth-level movable sealing cover; 7.9: sealing cover connecting rod assembly; 7.10: traction connecting rod; 7.11 guide rail; 7.12 wire rope; 7.13 steering rod; 7.14 guide wheel; 7.15 row Air port connecting plate; 7.16 Tension spring mounting seat; 7.17 Hinge; 7.18 Hinge shaft; 7.19 Screw; 7.20 Tension spring; 7.21 Exhaust control board; 7.4.1: Connecting rod fixing base; 7.5.2: Connecting rod fixing base; 7.6.2: Connecting rod fixing base; 7.7.2: Connecting rod fixing base; 7.8.2: Connecting rod fixing base; 7.5.1: First-level sealing cover support foot; 7.6.1: Second-level sealing cover support foot; 7.7.1: Third-level sealing cover support foot; 7.8.1: Fourth-level sealing cover support foot; 7.9.1: Connecting rod one; 7.9.2: Connecting rod two; 7.9.3: Screw; 7.9.4: Rivet; 7.11.1: Slide groove; 8. High-temperature gas inlet pipe; 9: Heating box.

[0076] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0077] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0078] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0079] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] like Figure 2 , Figure 4 As shown, a cargo box heating device includes a cargo box 300, a heating channel 200 and an adjustable heating device 100; the cargo box 300 is used to hold materials; the heating channel 200 is located below the cargo box 100, and is used to transport high-temperature gas to heat the cargo box floor; the adjustable heating device 100 is located below the heating channel 200, and is provided with at least one high-temperature gas inlet connected to the engine exhaust pipe, at least one cargo box heating channel port connected to the heating channel 200, and at least one exhaust port connected to the outside air; the adjustable heating device 100 can automatically adjust the hot gas flow of the high-temperature gas discharged from the engine exhaust pipe entering the heating channel 200 and the hot gas flow discharged to the outside according to the ambient temperature, the type of material and the temperature of the cargo box floor, thereby realizing the adjustment of the cargo box heating temperature.

[0081] For further solutions, please refer to Figure 2 As shown, the heating channels 200 are evenly distributed on the cargo box floor, and the adjustable heating device 100 is located in the middle of the heating channels 200 on the cargo box front plate, which can evenly transfer heat to the cargo box floor.

[0082] The structure of the above-mentioned adjustable heating device is further described below.

[0083] like Figure 3 , Figure 4As shown, the adjustable heating device 100 includes a heating box 9 and a heating air volume control device 7; at least one high-temperature gas inlet, a cargo box heating channel opening and an exhaust port are provided on the outer plate of the heating box 9; the heating air volume control device 7 realizes the control of the heating amount of the cargo box, and includes a telescopic sealing cover, a resettable sealing plate and a hoisting component; the telescopic sealing cover is located in the heating box 9 and fixed at the cargo box heating channel opening, and the telescopic sealing cover is telescopically moved to increase or decrease the opening interface of the cargo box heating channel opening, thereby adjusting the high-temperature gas entering the heating channel 200 Hot gas flow; the reset sealing plate is located outside the heating box 9 and is hinged at the exhaust port, and the opening interface of the exhaust port is increased or decreased by flipping the reset sealing plate, thereby adjusting the hot gas flow discharged to the outside by the high-temperature gas; the hoisting component includes a rotating component with forward and reverse rotation and a pull rope component; the rotating component is installed on the outer plate of the heating box 9; the pull rope component is arranged in the heating box 9, one free end of which is wound around the rotating component, and the other free end is first connected to the telescopic sealing cover and then continues to extend and is connected to the reset sealing plate, so as to realize the linkage between the telescopic sealing cover and the reset sealing plate.

[0084] For further solutions, please refer to Figure 3 , Figure 4 As shown, the cargo box heating channel opening is arranged on the top plate of the heating box 9, and an elastic gas joint coaxially arranged therewith extends vertically upward around the periphery of the cargo box heating channel opening; after the cargo box 300 is unloaded, it is pressed down to the elastic gas joint, so that the upper top surface of the elastic gas joint is tightly fitted on the heating channel 200.

[0085] The structure of the above-mentioned elastic gas joint is further described below.

[0086] Continue to refer to Figure 3 As shown, the elastic gas joint includes a high-temperature gas heating tube 3, a high-temperature gas joint 1, a spring 2 and a displacement limiting component; the high-temperature gas heating tube 3 includes a lower cylinder and a lower limiting plate, the lower cylinder extends vertically upward around the periphery of the cargo box heating channel opening, and the lower limiting plate is fixed to the middle area of ​​the outer side wall of the lower cylinder; the high-temperature gas joint 1 includes an upper cylinder and an upper limiting plate, the upper cylinder is inserted into the lower cylinder, and the upper limiting plate is fixed to the top of the outer side wall of the upper cylinder; the spring 2 is mounted on the upper and lower cylinders between the lower limiting plate and the upper limiting plate; the displacement limiting component is inserted between the lower cylinder and the upper cylinder, and is used to limit the upward movement of the high-temperature gas joint 1 under the lifting action of the spring 2.

[0087] It should be noted that if Figure 4As shown, the high-temperature gas intake pipe 8 fixed at the high-temperature gas intake port is connected to the engine exhaust pipe to transmit the high-temperature gas to the heating box. On the one hand, the high-temperature gas is discharged into the air through the high-temperature gas exhaust pipe 6, and on the other hand, the hot gas is transmitted to the heating channel 200 through the high-temperature gas connector 1. After the cargo box 300 completes the unloading work, it is pressed down to the high-temperature gas connector 1, the high-temperature gas connector 1 moves down, and the spring 2 is compressed. The above connection method can effectively ensure the sealing connection between the high-temperature gas connector 1 and the heating channel 200, ensuring the transmission of high-temperature gas; at the same time, this connection method solves the problem of wear, fatigue and fracture of the connecting bolts in the traditional connection method.

[0088] Further solutions, such as Figure 3 , Fig. 9 As shown, the lower cylinder is provided with a through-type radial circular hole, and the upper cylinder is provided with a through-type radial oblong hole 1.1; the displacement limiting components are a pin 4 and a cotter pin 5. When the radial circular hole is located in the radial oblong hole 1.1, the pin 4 is penetrated in the radial circular hole and the radial oblong hole 1.1, and the cotter pin 5 is inserted into the end of the pin 4 to axially limit the pin 4; the length of the radial oblong hole 1.1 is the up and down moving distance of the high-temperature gas connector 1 in the high-temperature gas heating tube 3.

[0089] It should be noted that a radial circular hole is provided on the high-temperature gas heating tube 3 for the pin 4 to pass through. The outer diameter of the high-temperature gas joint 1 is smaller than the inner diameter of the high-temperature gas heating tube 3. The high-temperature gas joint 1 is provided with a radial oblong hole 1.1, and the pin 4 passes through the radial oblong hole 1.1. The length of the radial oblong hole 1.1 satisfies the expansion and contraction deformation of the spring 2. Under the frequent downward and upward movements of the heating channel 200, the high-temperature gas joint 1 can realize the expansion and contraction function under the action of the spring 2 and the pin 4, so that the heating channel 200 of the mine car can achieve soft contact with the cargo box heating device in the running state, reducing rigid damage. The device has the characteristics of simple structure, reliability and long service life.

[0090] The structure of the above-mentioned resettable sealing plate is further described below.

[0091] like Figure 5 , Figure 6 , Fig.10 As shown, the exhaust port is arranged on the side plate of the heating box 9, and a high-temperature gas exhaust pipe 6 coaxially arranged therewith extends horizontally outward around the periphery of the exhaust port. The outer end of the high-temperature gas exhaust pipe 6 is an oblique cut inclined toward the heating box 9.

[0092] The reset sealing plate includes an exhaust port connecting plate 7.15, an exhaust control plate 7.21, a tension spring mounting seat 7.16 and a tension spring 7.20; the exhaust port connecting plate 7.15 is fixed at the top of the oblique cut; the exhaust control plate 7.21 is connected to the exhaust port connecting plate 7.15 through a hinged component, and the exhaust control plate 7.21 can be turned around the hinge point; the tension spring mounting seat 7.16 is fixed to the outer facade of the exhaust port connecting plate 7.15 through a screw 7.19; the tension spring 7.20 is hinged at Between the exhaust control plate 7.21 and the tension spring mounting seat 7.16, when the tension spring 7.20 is contracted to the shortest state, the exhaust control plate 7.21 is in a horizontal state, and the exhaust port is in a maximum open state. When the tension spring 7.20 is stretched to the longest state, the exhaust control plate 7.21 is attached to the exhaust port, and the exhaust port is in a closed state. The flipping action of the exhaust control plate 7.21 toward the exhaust port is achieved by the pulling action of the pull rope component (i.e., the wire rope 7.12 in the figure) located in the heating box 9.

[0093] In a preferred embodiment, the hinged component adopts a hinge 7.17 and a hinge shaft 7.18, one end of the hinge 7.17 is connected to the exhaust port connecting plate 7.15, one end of the tension spring 7.20 is connected to the tension spring mounting seat 7.16, and the other end is connected to the exhaust control board 7.21, the other side of the hinge 7.17 is connected to the exhaust control board 7.21, and the exhaust control board 7.21 flips around the hinge shaft 7.18.

[0094] The structure of the telescopic sealing cover is further described below.

[0095] like Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the telescopic sealing cover comprises a pair of guide rails 7.11 opposite to each other, a fixed sealing cover 7.4, a multi-stage movable sealing cover and a sealing cover connecting rod assembly 7.9; a pair of guide rails 7.11 opposite to each other are installed in the heating box 9 near the cargo box heating channel opening; the fixed sealing cover 7.4 is fixedly installed on the guide rails 7.11 near the rotating component; the multi-stage movable sealing cover is stacked in the fixed sealing cover 7.4, and its two ends are respectively inserted into the slide grooves 7.11.1 on the corresponding guide rails 7.11 through the sealing cover supporting feet; the sealing cover connecting rod assembly 7.9 is connected to the multi-stage movable sealing cover to realize linkage of the multi-stage movable sealing cover, thereby realizing that the multi-stage movable sealing cover synchronously slides horizontally to the left on the guide rail 7.11 and then gradually overlaps to increase the opening interface of the cargo box heating channel opening, or realizes that the multi-stage movable sealing cover synchronously slides horizontally to the right on the guide rail 7.11 and then gradually separates to reduce the opening interface of the cargo box heating channel opening.

[0096] The structure of the sealing cover connecting rod assembly is further described below.

[0097] like Figure 6 , Figure 7 As shown, the sealing cover connecting rod assembly 7.9 is a scissor-type telescopic structure as a whole, which is composed of multiple connecting rods 1 7.9.1 and connecting rods 2 7.9.2 hinged in an X-shaped structure through screws 7.9.3 and rivets 7.9.4; a connecting rod fixed base arranged in a straight line is fixed to the middle area of ​​the fixed sealing cover 7.4 and the multi-stage movable sealing cover; multiple hinge points in the middle area of ​​the scissor-type telescopic structure correspond to a connecting rod fixed base one by one, and the corresponding hinge points and the connecting rod fixed base are hinged together by screws 7.9.3 respectively; the outermost movable sealing cover is connected to the pull rope component through the traction connecting rod 7.10, and the pull rope component drives the outermost movable sealing cover to move horizontally on the guide rail 7.11 through the traction connecting rod 7.10, and the outermost movable sealing cover relies on the sealing cover connecting rod assembly 7.9 to drive the remaining movable sealing covers to move synchronously horizontally.

[0098] In a preferred embodiment, the multi-stage movable sealing cover is composed of a first-stage movable sealing cover 7.5, a second-stage movable sealing cover 7.6, a third-stage movable sealing cover 7.7, and a fourth-stage movable sealing cover 7.8; the first-stage movable sealing cover 7.5, the second-stage movable sealing cover 7.6, the third-stage movable sealing cover 7.7, and the fourth-stage movable sealing cover 7.8 can slide on the guide rail 7.11 and can achieve sealing while sliding.

[0099] The fixed sealing cover 7.4 is fixed at the end of the guide rail 7.11 and does not move. The first-level movable sealing cover 7.5 is provided with first-level sealing cover supporting feet 7.5.1 at both ends. The second-level movable sealing cover 7.6 is provided with second-level sealing cover supporting feet 7.6.1 at both ends. The third-level movable sealing cover 7.7 is provided with third-level sealing cover supporting feet 7.7.1 at both ends. The fourth-level movable sealing cover 78 is provided with fourth-level sealing cover supporting feet 7.8.1 at both ends. The first-level sealing cover supporting feet 7.5.1, the second-level sealing cover supporting feet 7.6.1, the third-level sealing cover supporting feet 7.7.1 and the fourth-level sealing cover supporting feet 7.8.1 can cooperate with the slide groove 7.11.1 on the sealing guide rail 7.11 to realize sliding action.

[0100] The fixed sealing cover 7.4, the first-stage movable sealing cover 7.5, the second-stage movable sealing cover 7.6, the third-stage movable sealing cover 7.7, and the fourth-stage movable sealing cover 7.8 are linked by the sealing cover connecting rod assembly 7.9. The steel wire rope 7.12 drives the traction connecting rod 7.10, and the traction connecting rod 7.10 drives the fourth-stage sealing cover 7.8, and the fourth-stage sealing cover 7.8 moves horizontally on the guide rail 7.11. At the same time, the fourth-stage sealing cover 7.8 drives the first-stage movable sealing cover 7.5, the second-stage movable sealing cover 7.6, and the third-stage movable sealing cover 7.7 to move horizontally synchronously by relying on the sealing cover connecting rod assembly 7.9. The fixed sealing cover 7.4 is provided with a connecting rod fixing base 7.4.1, the first-level sealing cover 7.5 is provided with a connecting rod fixing base 7.5.2, the second-level sealing cover 7.6 is provided with a connecting rod fixing base 7.6.2, the third-level sealing cover 7.7 is provided with a connecting rod fixing base 7.7.2, the fourth-level sealing cover 7.8 is provided with a connecting rod fixing base 7.8.2, and the connecting rod 1 7.9.1 and the connecting rod 2 7.9.2 are arranged as follows: Figure 7 As shown, connecting rod 1 7.9.1 and connecting rod 2 7.9.2 are connected by rivets 7.9.4, and connecting rod 1 7.9.1, connecting rod 2 7.9.2 and the movable sealing cover are connected by screws 7.9.3.

[0101] The structure of the above-mentioned rotating component is further described below.

[0102] like Figure 5 , Figure 6 As shown, the rotating part includes a rope-twisting device 7.2 and a hydraulic motor 7.3 driving the rope-twisting device. The hydraulic motor 7.3 has the advantages of high temperature resistance and self-locking. The rope-twisting device 7.2 is fixed on the rope-twisting device support 7.1, and the rope-twisting device support 7.1 is fixed on the heating box 9; the rope-pulling part is a steel wire rope 7.12, one end of which is connected to the rope-twisting device 7.2, and the other end of which passes through the steering component for steering and is connected to the exhaust control board 7.21. The hydraulic motor 7.3 itself drives the rope-twisting device 7.2 in forward and reverse rotation to realize the retracting and releasing action of the steel wire rope 7.11; when the hydraulic motor 7.3 rotates forward, the hydraulic motor 7.3 drives the rope-twisting device 7.2 to retract the wire, and the steel wire rope 7.11 is retracted. .12 drives the telescopic sealing cover to contract to increase the opening interface of the cargo box heating channel and drives the exhaust control plate 7.21 to flip inward to reduce the opening interface of the exhaust port, thereby increasing the heating temperature of the cargo box; when the hydraulic motor 7.3 reverses, the hydraulic motor 7.3 drives the rope device 7.2 to release the wire, and the wire rope 7.12 drives the telescopic sealing cover to extend outward to reduce the opening interface of the cargo box heating channel and drives the exhaust control plate 7.21 to flip outward to increase the opening interface of the exhaust port, thereby reducing the heating temperature of the cargo box.

[0103] For further solutions, please refer to Figure 5 , Figure 6As shown, the steering component includes a steering rod 7.13 and a guide wheel 7.14; the top end of the steering rod 7.13 is fixed in the high-temperature gas exhaust pipe 6 located outside the heating box 9; the guide wheel 7.14 is rotatably supported at the bottom of the steering rod 7.13, and the steel wire rope 7.12 led out from the rope twisting device 7.2 extends horizontally through the guide wheel 7.14, is diverted obliquely downward, and is connected to the exhaust control board 7.21.

[0104] The working process of the above-mentioned rotating component is further described below.

[0105] The hydraulic motor 7.3 has two operating states: forward and reverse. When the hydraulic motor rotates forward:

[0106] This mode indicates that the cargo box heating temperature needs to be increased, the hydraulic motor 7.3 drives the rope twisting device 7.2 in a forward rotation, the rope twisting device 7.2 takes up the wire, the wire rope 7.12 moves to the left, the exhaust control board 7.21 connected to the end of the wire rope 7.12 flips, the exhaust control board 7.21 is close to the outlet of the high-temperature gas exhaust pipe 6, the extension of the tension spring 7.20 increases, and the high-temperature gas flow to the outside world decreases. While the wire rope 7.12 moves to the left, the traction connecting rod 7.10 drives the four-stage moving sealing cover 7.8 to move to the left, and the four-stage sealing cover 7.8 drives the first-stage moving sealing cover 7.5, the second-stage moving sealing cover 7.6, and the third-stage moving sealing cover 7.7 with the help of the sealing cover connecting rod assembly 7.9 to achieve synchronous leftward movement, at which time the opening interface leading to the heating channel 200 increases, and the heating amount of the cargo box 300 increases.

[0107] When the hydraulic motor is reversed:

[0108] This mode indicates that the cargo box heating temperature needs to be reduced, the hydraulic motor 7.3 reverses to drive the rope device 7.2, the rope device 7.2 releases the wire, the wire rope 7.12 moves to the right, the exhaust control board 7.21 connected to the end of the wire rope 7.12 flips, the exhaust control board 7.21 is away from the outlet of the high-temperature gas exhaust pipe 6, the tension spring 7.20 contracts, and the high-temperature gas flow to the outside increases. While the wire rope 7.12 moves to the right, the traction connecting rod 7.10 drives the four-stage moving sealing cover 7.8 to move to the right, and the four-stage sealing cover 7.8 drives the first-stage moving sealing cover 7.5, the second-stage moving sealing cover 7.6, and the third-stage moving sealing cover 7.7 with the help of the sealing cover connecting rod assembly 7.9 to achieve synchronous rightward movement. At this time, the opening interface leading to the heating channel 200 is reduced, and the heating amount of the cargo box 300 is reduced.

[0109] Another preferred embodiment: Figure 3 , Figure 4 , Figure 5As shown, when an exhaust port is added to the heating box 9, a resettable sealing plate and a hoisting component used in conjunction with the exhaust port are added to the heating air volume control device; wherein the other free end of the pull rope component in the hoisting component is directly connected to the resettable sealing plate.

[0110] like Fig.11 As shown, the present invention also provides a cargo box heating control system, including an electromagnetic reversing valve, at least one external temperature sensor, at least one cargo box temperature sensor, an operation panel, a controller (using a programmable logic controller, i.e., PLC) and a communication device, wherein the electromagnetic reversing valve is used to control the hydraulic motor to realize forward and reverse movements, thereby driving the rope twisting device to realize the retraction and release movements of the wire rope to realize the control of cargo box heating; at least one external temperature sensor is installed on the vehicle to detect the external temperature; at least one cargo box temperature sensor is installed on the cargo box bottom plate to detect the temperature of the cargo box bottom plate; the operation panel is used as a user input device to send instruction parameters; the controller is used to receive signals from the external temperature sensor, the cargo box temperature sensor and the operation panel, and issue action execution element signals, the controller stores cargo box heating temperature data of different materials at different external temperatures, and serves as a basis for realizing cargo box heating control; the communication device is communicatively connected to the controller, and is used to transmit the cargo box bottom plate temperature and the external environment temperature to the operation panel, and at the same time to transmit the user-specified cargo box heating temperature to the controller.

[0111] The present invention also provides a method for controlling the heating amount of a cargo box, comprising the following steps:

[0112] Step 1: The user can select two cargo box heating input modes: Mode 1: Manual heating mode, the user inputs the specified cargo box heating temperature according to the external temperature sensor value and sends it to the controller (using a programmable logic controller, i.e., PLC) for execution; Mode 2: Automatic heating mode, the cargo box heating temperature is automatically calculated according to the material type and external ambient temperature and sent to the controller (using a programmable logic controller, i.e., PLC) for execution, such as Fig.12 As shown;

[0113] Step 2: If the user selects the automatic heating mode, the controller (using a programmable logic controller, i.e., PLC) obtains the final recommended cargo box heating temperature according to the user's instructions, combined with the temperature sensor value fed back from the cargo box bottom plate and the external temperature sensor value, according to the corresponding data of the material type and the cargo box heating temperature, and according to the relevant calculation algorithm; the control method of the cargo box heating device in this mode is:

[0114] First, the user selects the type of material, and the system obtains the ambient temperature sensor data T2 from the outside world. According to the temperature of the external temperature sensor, the system stores the data and matches it to obtain the matching temperature of the cargo box T0. The temperature of the cargo box T0 is compared with the temperature sensor T1 of the cargo box bottom plate. When the temperature of the cargo box T0 is greater than the temperature sensor T1 of the cargo box bottom plate, it means that the cargo box needs to be heated. The electromagnetic reversing valve at the output end of the controller is energized, and the hydraulic motor rotates forward for a certain number of times, resulting in the mechanical structure action as described above. At this time, the heating amount leading to the heating channel increases, and the temperature of the cargo box bottom plate increases.

[0115] Specifically, when the temperature sensor T1 of the cargo box floor is equal to the adapted cargo box temperature T0, the electromagnetic reversing valve port loses power, the hydraulic motor self-locks, and the process is closed. When the temperature sensor T1 of the cargo box floor is lower than the adapted cargo box temperature T0, the electromagnetic reversing valve port continues to be powered, and the hydraulic motor continues to rotate a certain number of times, continuing to increase the heat to the cargo box heating channel until the temperature sensor T1 of the cargo box floor is equal to the adapted cargo box temperature T0, and the process ends.

[0116] When the adapted cargo box temperature T0 is less than the cargo box bottom plate temperature sensor T1, it means that the cargo box heating amount needs to be reduced, the coil on the other side of the electromagnetic reversing valve is energized, the hydraulic motor reverses a certain number of turns, and the flow of high-temperature gas to the outside increases. Correspondingly, the heat to the cargo box heating channel decreases, and the cargo box bottom plate temperature decreases until the cargo box bottom plate temperature sensor T1 is equal to the adapted cargo box temperature T0. The process ends. Fig.13 shown.

[0117] Step 3: If the user selects the manual heating mode, the control method of the cargo box heating device in this mode is:

[0118] When the user chooses to select the cargo box heating temperature based on the value of the external environment temperature sensor T2, the specified cargo box heating temperature T0 is directly compared with the cargo box temperature sensor temperature T1. When the specified cargo box temperature T0 is greater than the cargo box bottom plate temperature sensor T1, it means that the cargo box needs to be heated, and the electromagnetic reversing valve port at the output end of the controller is energized, and the hydraulic motor rotates forward a certain number of times, resulting in the mechanical structure action as described above. At this time, the heating amount leading to the cargo box heating channel increases, and the cargo box bottom plate temperature rises. When the cargo box bottom plate temperature sensor T1 is equal to the specified cargo box temperature T0, the electromagnetic reversing valve port loses power, the hydraulic motor self-locks, and the process is closed.

[0119] Specifically: when the cargo box bottom plate temperature sensor T1 is lower than the specified cargo box temperature T0, the electromagnetic reversing valve port continues to be energized, and the hydraulic motor continues to rotate a certain number of times, continuing to increase the heat leading to the cargo box heating channel until the cargo box bottom plate temperature sensor T1 is equal to the specified cargo box temperature T0, and the process ends.

[0120] When the specified cargo box temperature T0 is less than the cargo box bottom plate temperature sensor T1, it means that the cargo box heating amount needs to be reduced, the coil on the other side of the electromagnetic reversing valve is energized, the hydraulic motor reverses a certain number of turns, and the flow of high-temperature gas to the outside increases. Correspondingly, the heat to the cargo box heating channel decreases, and the cargo box bottom plate temperature decreases until the cargo box bottom plate temperature sensor T1 is equal to the specified cargo box temperature T0, and the process ends.

[0121] In summary, the present invention achieves the following functions and effects:

[0122] 1. The connection between the heating air volume control device and the cargo box heating channel adopts a pin shaft with a limit hole. This connection method can effectively ensure the connection between the telescopic high-temperature gas joint and the cargo box heating channel to ensure the transmission of high-temperature gas. At the same time, this connection method solves the problem of wear, fatigue and fracture of the connecting bolts in the traditional connection method.

[0123] 2. The heating air volume control device can automatically control the air volume leading to the cargo box heating channel and the air volume of the exhaust duct according to the external ambient temperature. Under the premise of ensuring that the heating temperature meets the requirements of non-stick materials in the cargo box, it provides an appropriate amount of heating gas. On the one hand, it reduces the rust problem of the cargo box heating channel caused by the cold liquefaction of gas in the local space caused by the passage of high-temperature gas into the cargo box heating channel. On the other hand, the appropriate heat source is transferred to the inner wall of the cargo box, which can reduce the temperature difference between the inner wall of the cargo box and the frozen material, reduce the water vapor formed by the cold liquefaction of air, and slow down the rust rate of the inner wall of the cargo box. At the same time, the appropriate heating temperature can keep the material and the inner wall of the cargo box in a relatively clean state, reducing the mud stains caused by the thawing of materials due to high temperature.

[0124] 3. At present, the cargo box heating device cannot adjust the heating amount of the cargo box according to the ambient temperature. Even if the cargo box heating function is not needed, the cargo box heating device is always in the open state. For example, in coal mines, the cargo box is heated continuously at high temperatures, and the temperature exceeds the ignition point of the raw coal, which can easily lead to fire. The existing cargo box heating device cannot adjust the heating amount of the cargo box, which can solve the above risks.

[0125] 4. The heating air volume control device can simultaneously control the amount of hot air to the outside and the amount of hot air in the cargo box heating channel. The cargo box temperature is sensitively adjusted and the overall device structure is simple and reliable.

[0126] 5. The control system automatically matches the cargo box heating temperature based on the material and ambient temperature as input parameters. The control method of adjusting the cargo box temperature by connecting the cargo box bottom plate temperature sensor to the adapted cargo box temperature has the advantages of intelligence and customization.

[0127] 6. The hydraulic motor is used as the actuator in the cargo box heating field, which has the advantages of effective adaptation to high temperature resistance, safety and reliability. The wire rope control method is adopted, which has the advantages of simple structure and reliability.

[0128] The mine car provided by the present invention is described below. The mine car described below and the cargo box heating device described above can be referred to each other.

[0129] A mining car provided by the present invention may include a cargo box heating device as described in any one of the above embodiments.

[0130] The beneficial effects achieved by the mining vehicle provided by the present invention are consistent with the beneficial effects achieved by the cargo box heating device provided by the present invention, and will not be described in detail here.

[0131] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0132] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0133] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A cargo box heating device, characterized in that: include: Cargo box, used to hold materials; A heating channel, located below the cargo box, for conveying high-temperature gas to heat the cargo box bottom plate; The adjustable heating device is located below the heating channel and has at least one high-temperature gas inlet connected to the engine exhaust pipe, at least one cargo box heating channel opening connected to the heating channel, and at least one exhaust port connected to the outside air; the adjustable heating device can automatically adjust the hot gas flow rate of the high-temperature gas discharged from the engine exhaust pipe entering the heating channel and the hot gas flow rate discharged to the outside according to the ambient temperature, material type, and cargo box bottom plate temperature, thereby realizing the adjustment of the cargo box heating temperature.

2. A cargo box heating device according to claim 1, characterized in that: The adjustable heating device comprises: The heating box has at least one high-temperature gas inlet, a cargo box heating channel opening, and an exhaust port disposed on its outer peripheral plate; The heating air volume control device realizes the control of the heating volume of the cargo box, including: A telescopic sealing cover is located in the heating box and fixed at the opening of the cargo box heating channel, and the telescopic sealing cover is telescopically moved to increase or decrease the opening interface of the cargo box heating channel opening, thereby adjusting the hot gas flow of high-temperature gas entering the heating channel; A resettable sealing plate is located outside the heating box and is hinged at the exhaust port, and the resettable sealing plate is turned over to increase or decrease the opening interface of the exhaust port, thereby adjusting the hot gas flow rate of the high-temperature gas discharged to the outside; Winch components, including: A rotating component with forward and reverse rotation is installed on the outer plate of the heating box; A pull rope component is arranged in the heating box, one free end of which is wound around the rotating component, and the other free end is first connected to the telescopic sealing cover and then continues to extend and is connected to the resettable sealing plate, thereby realizing the linkage between the telescopic sealing cover and the resettable sealing plate.

3. A cargo box heating device according to claim 2, characterized in that: The cargo box heating channel opening is arranged on the top plate of the heating box, and an elastic gas joint coaxially arranged therewith extends vertically upward around the periphery of the cargo box heating channel opening; After unloading, the cargo box is pressed down to the elastic gas joint, so that the upper top surface of the elastic gas joint is tightly fitted on the heating channel.

4. A cargo box heating device according to claim 3, characterized in that: The elastic gas joint comprises: The high-temperature gas heating pipe comprises a lower cylinder and a lower limit plate, wherein the lower cylinder extends vertically upward around the periphery of the cargo box heating passage opening, and the lower limit plate is fixed to the middle area of ​​the outer side wall of the lower cylinder; A high-temperature gas joint, comprising an upper cylinder and an upper limit plate, wherein the upper cylinder is inserted into the lower cylinder, and the upper limit plate is fixed to the top end of the outer side wall of the upper cylinder; A spring is sleeved on the upper and lower cylinders located between the lower limit plate and the upper limit plate; The displacement limiting component is inserted between the lower cylinder and the upper cylinder and is used to limit the upward movement of the high-temperature gas joint under the lifting action of the spring.

5. A cargo box heating device according to claim 4, characterized in that: The lower cylinder is provided with a through-type radial circular hole, and the upper cylinder is provided with a through-type radial oblong hole; The displacement limiting components are a pin shaft and a cotter pin. When the radial circular hole is located in the radial oblong hole, the pin shaft is inserted into the radial circular hole and the radial oblong hole, and a cotter pin is inserted into the end of the pin shaft to limit the axial position of the pin shaft; the length of the radial oblong hole is the up and down movement distance of the high-temperature gas joint in the high-temperature gas heating tube.

6. A cargo box heating device according to claim 2, characterized in that: The exhaust port is arranged on the side plate of the heating box, and a high-temperature gas exhaust pipe coaxially arranged therewith extends horizontally outward around the periphery of the exhaust port, and the outer end of the high-temperature gas exhaust pipe is an oblique cut inclined toward the heating box; The resettable sealing plate comprises: An exhaust port connecting plate fixed at the top of the oblique cut; An exhaust control plate is connected to the exhaust port connection plate through a hinge component, and the exhaust control plate can be turned around a hinge point; A tension spring mounting seat, fixed on the outer side elevation of the exhaust port connecting plate; The tension spring is hinged between the exhaust control plate and the tension spring mounting seat. When the tension spring is contracted to the shortest state, the exhaust control plate is in a horizontal state, and the exhaust port is in a maximum open state. When the tension spring is stretched to the longest state, the exhaust control plate is attached to the exhaust port, and the exhaust port is in a closed state. The flipping action of the exhaust control plate toward the exhaust port is achieved by the pulling action of the pull rope component located in the heating box.

7. A cargo box heating device according to claim 2, characterized in that: The telescopic sealing cover comprises: A pair of guide rails facing each other are installed in the heating box near the opening of the cargo box heating channel; A fixed sealing cover, fixedly mounted on the guide rail close to the rotating component; A multi-stage movable sealing cover is stacked in the fixed sealing cover, and both ends of the movable sealing cover are respectively inserted into the slide grooves on the corresponding guide rails through the sealing cover support feet; The sealing cover connecting rod assembly is connected to the multi-stage movable sealing cover to realize linkage of the multi-stage movable sealing cover, thereby realizing that the multi-stage movable sealing cover synchronously slides horizontally to the left on the guide rail and then gradually overlaps to increase the opening interface of the cargo box heating channel opening, or realizing that the multi-stage movable sealing cover synchronously slides horizontally to the right on the guide rail and then gradually separates to reduce the opening interface of the cargo box heating channel opening.

8. A cargo box heating device according to claim 7, characterized in that: The sealing cover connecting rod assembly is a scissor-type telescopic structure as a whole, which is composed of multiple connecting rods hinged in an X-shaped structure; A connecting rod fixing base arranged in a straight line is fixed on the middle area of ​​the fixed sealing cover and the multi-stage movable sealing cover; The multiple hinge points in the middle area of ​​the scissor-type telescopic structure correspond to a connecting rod fixing base one by one, and the corresponding hinge points and the connecting rod fixing base are hinged together by screws respectively; The outermost movable sealing cover is connected to the pull rope component through a traction connecting rod. The pull rope component drives the outermost movable sealing cover to move laterally on the guide rail through the traction connecting rod. The outermost movable sealing cover relies on the sealing cover connecting rod assembly to drive the remaining movable sealing covers to move laterally synchronously.

9. A cargo box heating device according to claim 2, characterized in that: The rotating component includes a rope twisting device and a hydraulic motor driving the rope twisting device, wherein the rope twisting device is fixed on a rope twisting device support, and the rope twisting device support is fixed on the heating box; The pull rope component is a steel wire rope, one end of which is connected to the rope twisting device, and the other end of which passes through the steering component and is then connected to the exhaust control plate in the resettable sealing plate. The multi-stage movable sealing cover in the telescopic sealing cover is also connected to the steel wire rope through a traction connecting rod. When the hydraulic motor rotates forward, the hydraulic motor drives the rope device to reel in the wire, and the steel wire rope drives the telescopic sealing cover to retract to increase the opening interface of the cargo box heating channel opening and drives the exhaust control panel to flip inward to reduce the opening interface of the exhaust port, thereby increasing the cargo box heating temperature; When the hydraulic motor reverses, the hydraulic motor drives the rope device to pay out the wire, and the wire rope drives the telescopic sealing cover to extend outward to reduce the opening interface of the cargo box heating channel opening and drives the exhaust control panel to flip outward to increase the opening interface of the exhaust port, thereby reducing the heating temperature of the cargo box.

10. A cargo box heating device according to claim 9, characterized in that: The steering component comprises: A steering rod, the top end of which is fixed in a high-temperature gas exhaust pipe located outside the heating box and arranged coaxially with the exhaust port; The guide wheel is rotatably supported at the bottom of the steering rod. The steel wire rope led out from the rope twisting device extends transversely through the guide wheel, is turned obliquely downward, and then is connected to the exhaust control board.

11. A cargo box heating device according to claim 2, characterized in that: When an exhaust port is added to the heating box, a resettable sealing plate and a hoisting component used in conjunction with the exhaust port are added to the heating air volume control device; wherein the other free end of the pull rope component in the hoisting component is directly connected to the resettable sealing plate.

12. A cargo box heating device according to claim 1, characterized in that: The heating channels are evenly distributed on the bottom plate of the cargo box, and the adjustable heating device is located in the middle of the heating channels on the front plate of the cargo box.

13. A mining car, characterized in that: A cargo box heating device comprising the device described in any one of claims 1 to 12.

14. A cargo box heating control system, comprising the cargo box heating device according to any one of claims 1 to 12, characterized in that: include: The electromagnetic reversing valve is used to control the hydraulic motor to realize forward and reverse movement, thereby driving the rope-twisting device to realize the retraction and release of the wire rope to realize the control of the cargo box heating; at least one ambient temperature sensor, mounted on the vehicle, for detecting ambient temperature; At least one cargo box temperature sensor, mounted on the cargo box bottom plate, for detecting the temperature of the cargo box bottom plate; The operation panel, as a user input device, is used to send command parameters; The controller is used to receive signals from the external temperature sensor, the cargo box temperature sensor and the operation panel, and issue action execution element signals. The controller stores cargo box heating temperature data of different materials at different external temperatures, and serves as a basis for realizing cargo box heating control; The communication device is connected to the controller for transmitting the cargo box bottom plate temperature and the external environment temperature to the operation panel, and is also used to transmit the user-specified cargo box heating temperature to the controller.

15. A method for controlling the heating amount of a cargo box, comprising the cargo box heating amount control system according to claim 14, characterized in that: The following steps are involved: Step 1: The user can select two cargo box heating input modes: Mode 1: Manual heating mode, the user inputs the specified cargo box heating temperature according to the value of the external temperature sensor and sends it to the controller for execution; Mode 2: Automatic heating mode, which automatically calculates the heating temperature of the cargo box according to the material type and external ambient temperature and sends it to the controller for execution; Step 2: If the user selects the automatic heating mode, the control method of the cargo box heating device in this mode is: The user selects the type of material, and the controller obtains the ambient temperature sensor data T2, and compares the ambient temperature sensor temperature with the stored data to obtain the matching adaptive cargo box temperature T0; The adapted cargo box temperature T0 is compared with the cargo box bottom plate temperature sensor T1. When the adapted cargo box temperature T0 is greater than the cargo box bottom plate temperature sensor T1, it indicates that the cargo box needs to be heated. The controller increases the heating amount of the cargo box heating device to the cargo box heating channel until the cargo box bottom plate temperature sensor T1 is equal to the adapted cargo box temperature T0. When the adapted cargo box temperature T0 is less than the cargo box bottom plate temperature sensor T1, it means that the cargo box heating amount needs to be reduced. The controller increases the flow of high-temperature gas to the outside by controlling the cargo box heating device. Correspondingly, the heat to the cargo box heating channel decreases until the cargo box bottom plate temperature sensor T1 is equal to the adapted cargo box temperature T0. Step 3: If the user selects the manual heating mode, the control method of the cargo box heating device in this mode is: When the user chooses to select the cargo box heating temperature according to the value of the external environment temperature sensor T2, the specified cargo box heating temperature T0 is directly compared with the cargo box temperature sensor temperature T1. When the specified cargo box temperature T0 is greater than the cargo box bottom plate temperature sensor T1, it means that the cargo box needs to be heated. The controller increases the heating amount of the cargo box heating device to the cargo box heating channel until the cargo box bottom plate temperature sensor T1 is equal to the specified cargo box temperature T0. When the specified cargo box temperature T0 is lower than the cargo box bottom plate temperature sensor T1, it indicates that the cargo box heating amount needs to be reduced. The controller increases the flow of high-temperature gas from the cargo box heating device to the outside world. Correspondingly, the heat flowing to the cargo box heating channel decreases until the cargo box bottom plate temperature sensor T1 is equal to the specified cargo box temperature T0.

Images