Flow-adjustable exhaust conversion device and mining dump truck

Abstract

The utility model discloses a flow-adjustable exhaust conversion device and a mining dump truck. The flow-adjustable exhaust conversion device comprises a box body assembly and a conversion part, the box body assembly comprises a welding box body, an air inlet pipe, an air outlet pipeline I and an air outlet pipeline II; the welding box body is provided with a closed cavity; the air inlet pipe is inserted and welded on the welding box body and is used for being communicated with an engine exhaust pipe; the first air outlet pipeline is inserted into and welded to the welding box body and used for being communicated with a container heating channel. The second air outlet pipeline is inserted into and welded to the welding box and used for being communicated with a silencer. The conversion part is mounted on the welding box body, realizes adjustment of exhaust flow direction and adjustable flow, and is used for controlling exhaust gas to be exhausted to the atmosphere through the silencer, independently exhausted to a container heating channel and simultaneously exhausted to the atmosphere and the container heating channel; and the flow in each flow direction can be adjusted to control the exhaust back pressure of the engine and the heating temperature of the container.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flow adjustable exhaust conversion device belongs to the technical field of mine dump truck. BACKGROUND

[0002] The light mine dump truck is a kind of dump truck used to complete rock earthwork stripping and ore transportation task on open-pit mine, and its transport distance is short, load is heavy, and inertia is large when going down long slope. The development trend of large-scale mine machinery is obvious, and the rated load of light mine dump truck is continuously improved, and the displacement of the engine used with it is also continuously increased. The application of large power engine on light mine dump truck brings stronger power to the mine car, but it is accompanied by many drawbacks, such as the increase of engine exhaust flow, the substantial increase of exhaust temperature and the increase of exhaust noise.

[0003] The working condition of light mine dump truck is complex, and the vehicle sold to cold area needs to be equipped with cargo box heating system to avoid material sticking when unloading. The air duct is arranged at the bottom of the cargo box, and the engine tail gas is introduced to heat the bottom of the cargo box. On the mine car with low load and small power engine, the cargo box heating system can operate effectively, but on the mine car with large power engine, many problems occur. First, with the increase of load, the cargo box increases, and the resistance of the heating channel at the bottom of the cargo box increases greatly. Second, the exhaust flow of engine increases, and the exhaust noise increases. In order to meet the national noise standard, exhaust silencer is indispensable. The flow resistance of cargo box heating and silencer is very large, and when they are used together, the exhaust back pressure of engine will be seriously exceeded, which reduces the power performance of vehicle and increases the fuel consumption. Third, the exhaust temperature of large power engine increases greatly, which also causes the heating channel of cargo box to overheat. In some special working condition of mine area such as open-pit coal mine, high temperature is easy to ignite coal powder, which causes fire risk.

[0004] In order to solve the problems of large exhaust noise, excessive exhaust back pressure and high cargo box heating temperature leading to coal powder ignition, the technical solutions disclosed in the existing patents CN215321887U "Novel wide-body dump truck cargo box heating device", CN212563416U "Light mine dump truck exhaust system and light mine dump truck", CN204738864U "Exhaust device for heating cargo box by using tail gas" and CN217145640U "Mine vehicle exhaust conversion device" can realize the function of engine tail gas exhaust direction conversion, but due to the structure design, they can only realize the separate conversion of cargo box heating and exhaust silencer / atmosphere. SUMMARY

[0005] The utility model provides a kind of adjustable flow exhaust conversion device, realize that engine tail gas can simultaneously discharge container heating and discharge muffler, and adjustable flow of each flow direction, realize control container heating temperature and reduce exhaust back pressure, it can also be directly installed to muffler to reduce space occupation.

[0006] The utility model discloses according to following technical scheme realizes:

[0007] First, the utility model provides a kind of adjustable flow exhaust conversion device, including box body subassembly and conversion component;Box body subassembly includes welded box, intake pipe, exhaust pipe line one, exhaust pipe line two;Welded box has a closed chamber;Intake pipe is inserted and welded in the welded box, for connecting engine exhaust pipe;Exhaust pipe line one is inserted and welded in the welded box, for connecting container heating channel;Exhaust pipe line two is inserted and welded in the welded box, for connecting muffler;Conversion component is installed on the welded box, is structured as: working mode one: the intake pipe is connected with exhaust pipe line one, and engine tail gas is directly discharged into container heating channel;Working mode two: the intake pipe is connected with exhaust pipe line two, and engine tail gas is discharged into atmosphere after passing through muffler;Working mode three: the intake pipe is connected with exhaust pipe line one and two simultaneously, and engine tail gas is discharged into muffler and container heating channel simultaneously, and the flow of entering two tail gas can be adjusted.

[0008] Further scheme, the conversion component includes:

[0009] Conversion baffle, mainly by the baffle located in welded box and the conversion execution component located outside welded box and being connected with the baffle, rotate the baffle in welded box by rotating conversion execution component, for plugging exhaust pipe line one or exhaust pipe line two;

[0010] Sliding base, install outside welded box, is structured as: when the conversion execution component rotates to the fixed point of one end of sliding base, the baffle is close to exhaust pipe line one;When the conversion execution component rotates to the fixed point of the other end of sliding base, the baffle is close to exhaust pipe line two;When the conversion execution component rotates to the sliding area between two fixed points, the baffle controls the opening and closing degree of exhaust pipe line one and exhaust pipe line two.

[0011] In some embodiments, the sliding base is composed of an arc plate and two threaded seats, a round through hole is formed in each end of the arc plate, the two threaded seats are coaxially welded on the bottom surface of the arc plate, and the conversion execution component and the sliding base are fixed together by cooperating with fixed bolts;An arc-shaped long hole is formed between the two round through holes of the arc plate, and the conversion execution component and the sliding base are fixed together by cooperating with fixed bolts and fixed nuts.

[0012] In some embodiments, the conversion executing component comprises:

[0013] A rotating rod is arranged in the welding box and can rotate circumferentially in the welding box; the baffle is fixed on the rotating rod and can rotate circumferentially with the rotating rod;

[0014] A conversion wrench is fixed at one end of the rotating rod outside the welding box and has a round through hole at the other end for being fixed on the sliding base by the fixing bolt.

[0015] In some embodiments, a limiting and sealing component for limiting the outward axial movement of the rotating rod is arranged at a position close to the inner wall of the welding box, a sealing component is arranged at a position close to the outer wall of the welding box, and a limiting component for limiting the radial movement of the rotating rod is arranged in the welding box.

[0016] In some embodiments, an annular base serving as the limiting component is fixed in the welding box, the annular base is coaxial with the round through hole arranged in the welding box, the rotating rod is inserted into the annular base after being arranged in the round through hole, the upper region of the rotating rod is provided with external threads, a group of sealing washers and nuts serving as the limiting and sealing components are arranged in the welding box, the nut is welded to the rotating rod, and a group of sealing washers and nuts serving as the sealing component are arranged outside the welding box and are pressed by rotating the nut.

[0017] In some embodiments, the conversion wrench is provided with a mounting component for storing the fixing nut, the fixing nut is removed from the mounting component and is used to fix the conversion wrench on the sliding base by cooperating with the fixing bolt.

[0018] In some embodiments, the mounting component is a bolt, and the bolt and the fixing nut are fixed or unfixed by cooperating with the internal and external threads.

[0019] In some embodiments, the welding box is welded by a side bending plate, a lower bending plate and an upper bending plate, at least one mounting hole is arranged on each of the two ear plates extending from the side bending plate, and the welding box can be fixed on the muffler by cooperating with the bolt.

[0020] In the second aspect, the utility model provides a mine self-unloading vehicle which comprises the adjustable flow exhaust conversion device.

[0021] The utility model has the advantages of:

[0022] This invention provides an adjustable flow exhaust conversion device that can adjust the exhaust flow direction. One option is for engine exhaust gas to be discharged into the atmosphere after passing through a muffler; another is for exhaust gas to be directly discharged into the cargo box heating channel; and a third is for exhaust gas to be discharged into both the muffler and the cargo box heating channel simultaneously. The flow rates of each component can be adjusted to regulate the cargo box heating temperature and exhaust back pressure. This solves the exhaust problems of light-duty mining dump trucks using high-horsepower engines. Attached Figure Description

[0023] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0024] In the attached diagram:

[0025] Figure 1 This is an assembly diagram of the adjustable flow exhaust conversion device of this utility model;

[0026] Figure 2 This is a schematic diagram of the welded box body of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the conversion baffle of this utility model;

[0028] Figure 4 This is a schematic diagram of the sliding base of this utility model.

[0029] Attached diagram labels: 1. Welded housing; 2. Sliding base; 3. Conversion baffle; 4. Fixing nut; 5. Fixing bolt;

[0030] 6. Anti-loosening gasket; 7. Side bending plate; 8. Lower bending plate; 9. Upper bending plate; 10. Rib plate; 11. Annular base; 12. Air inlet pipe; 13. Air outlet pipe one; 14. Air outlet pipe two; 15. Rotating rod; 16. Baffle; 17. Wrench; 18. Sealing washer; 19. Adjustable wrench; 20. Hex bolt; 21. Curved plate; 22. Threaded seat.

[0031] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] like Figure 1 As shown, an adjustable flow exhaust conversion device includes a housing assembly and a conversion component. The housing assembly includes a welded housing 1, an intake pipe 12, an exhaust pipe 13, and an exhaust pipe 14. The welded housing 1 has a closed chamber. The intake pipe 12 is inserted into and welded to the welded housing 1 for connecting to an engine exhaust pipe. The exhaust pipe 13 is inserted into and welded to the welded housing 1 for connecting to a cargo box heating channel. The exhaust pipe 14 is inserted into and welded to the welded housing 1 for connecting to a muffler. The conversion component is installed on the welded housing 1 and is configured as follows: Working mode 1: the intake pipe 12 is connected to the exhaust pipe 13, and the engine exhaust gas is directly discharged into the cargo box heating channel; Working mode 2: the intake pipe 12 is connected to the exhaust pipe 14, and the engine exhaust gas is discharged into the atmosphere after passing through the muffler; Working mode 3: the intake pipe 12 is connected to the exhaust pipes 1, 2, 13, and 14 at the same time, and the engine exhaust gas is discharged into the muffler and the cargo box heating channel at the same time, and the flow rate of the exhaust gas entering both can be adjusted.

[0036] As can be seen from the above, this utility model provides an adjustable flow exhaust conversion device that can adjust the exhaust flow direction. One option is for the engine exhaust gas to be discharged into the atmosphere after passing through the muffler; another is for the exhaust gas to be directly discharged into the cargo box heating channel; and a third is for the exhaust gas to be discharged into both the muffler and the cargo box heating channel simultaneously. The flow rates of each component can be adjusted to regulate the cargo box heating temperature and exhaust back pressure. This solves the exhaust problems of light-duty mining dump trucks using high-horsepower engines.

[0037] The specific structure of the aforementioned conversion component will be further explained below.

[0038] like Figure 1 As shown, the conversion component includes a conversion baffle 3 and a sliding base 2. The conversion baffle 3 mainly consists of a baffle 16 located inside the welding box 1 and a conversion actuator located outside the welding box 1 and connected to the baffle 16. By rotating the conversion actuator, the baffle 16 is driven to rotate within the welding box 1 to block either the first vent pipe 13 or the second vent pipe 14. The sliding base 2 is installed outside the welding box 1 and is configured such that when the conversion actuator rotates to a fixed point at one end of the sliding base 2, the baffle 16 is pressed against the first vent pipe 13; when the conversion actuator rotates to a fixed point at the other end of the sliding base 2, the baffle 16 is pressed against the second vent pipe 14; when the conversion actuator rotates to the sliding area between the two fixed points, the baffle 16 controls the opening and closing degree of the first vent pipe 13 and the second vent pipe 14.

[0039] The following provides a further explanation of the specific structure of the aforementioned welded box.

[0040] like Figure 2 As shown, the welded housing 1 is welded together from a side bent plate 7, a lower bent plate 8, an upper bent plate 9, a stiffening rib 10, an annular base 11, an intake pipe 12, an exhaust pipe 13, and an exhaust pipe 14. The housing is divided into three parts—side, upper, and lower—to facilitate the installation of the conversion baffle 3. The upper bent plate 9 is welded last. The annular base 11 is welded to an appropriate position on the lower bent plate 8 and is concentric with the circular hole on the upper bent plate 9; it also serves to install the conversion baffle 3. This structure reduces one sealing point and lowers the risk of leakage. The intake pipe 12 is inserted and welded to one side of the housing to connect to the exhaust pipe of the engine. The exhaust pipes 13 and 14 are respectively inserted and welded to the other two sides of the housing to connect to the exhaust pipes of the cargo box heater and the muffler, respectively. The insertion depth is flush with the conversion baffle 3 when rotated to the corresponding position. The stiffening ribs 10 are welded to both ends of the side bent plate 7 to enhance structural strength. The side bending plate 7 has four bolt mounting holes at both ends, which can be used to fix the welded housing 1 to the muffler. The second exhaust pipe 14 is directly connected to the muffler's intake pipe, reducing installation difficulty and space occupation. It should be noted that the position of the exhaust port and the shape of the housing can be adjusted in this embodiment, and are only used to illustrate the technical solution of this utility model and not to limit it.

[0041] The following provides a further explanation of the specific structure of the aforementioned conversion baffle.

[0042] like Figure 3As shown, the conversion baffle 3 consists of a rotating rod 15 (with external threads), a baffle 16, a wing nut 17, a sealing washer 18, a conversion wrench 19, and a hex bolt 20. The baffle 16 is welded to the rotating rod 15, and the wing nut 17 is threaded onto the rotating rod 15. The sealing washer 18 is fitted onto the rotating rod 15 and placed on the wing nut 17. Before welding the upper bending plate 9, the assembly consisting of the rotating rod 15, baffle 16, wing nut 17, and washer 18 is inserted into the annular base 11. After fixing the upper bending plate 9 in place, the position of the wing nut 17 is adjusted so that the assembly can be lifted upwards by 1mm to 2mm. This ensures that the conversion baffle 3 will not become unable to rotate due to rust or other reasons during use. After adjustment, the assembly is removed, and the wing nut 17 is fixed to the rotating rod 15 by welding. After reassembly, the upper bending plate 9 can be welded. After the upper bending plate 9 is welded, another sealing washer 18 is fitted onto the rotating rod 15 and another wing nut 17 is threaded on. The conversion wrench 19 is welded to the rotating rod 15, with its long end parallel to the baffle; the hex bolt 20 is welded to the conversion wrench 19 and is used to hold the fixing nut 4.

[0043] The following is a further explanation of the specific structure of the sliding base described above.

[0044] like Figure 4 As shown, after adjusting the position of the positioning sliding base 2 relative to the welding box 1 by rotating the conversion wrench 19, the sliding base 2 is welded and fixed to the welding box 1. The sliding base 2 is welded from an arc plate 21 and two threaded seats 22. Each end of the arc plate 21 has a through hole. The two threaded seats 22 are welded to the bottom surface of the arc plate 21 in a coaxial manner with the through holes, which are used to fix the conversion wrench 19 and the sliding base 2 together with the fixing bolt 5. The arc plate 21 has an arc-shaped elongated hole between the two through holes, which is used to fix the conversion wrench 19 and the sliding base 2 together with the fixing bolt 5 and the fixing nut 4.

[0045] In use, by rotating the conversion wrench 19 to its extreme positions and fixing it with the threaded fixing bolt 5 and anti-loosening washer 6, the conversion wrench 19 can be selectively blocked to either exhaust pipe one 13 or exhaust pipe two 14, thereby controlling the flow direction of engine exhaust gas. By rotating the conversion wrench 19 within the range of the elongated hole in the sliding base 2 and fixing it to the arc plate 21 with the threaded fixing bolt 5, anti-loosening washer 6 and fixing nut 4, the opening and closing degree of exhaust pipe one 13 and exhaust pipe two 14 can be controlled, thereby adjusting the flow rate of engine exhaust gas into exhaust pipe one 13 and exhaust pipe two 14 respectively.

[0046] In summary, this utility model enables the adjustment of exhaust flow direction and flow rate, which can control the exhaust gas from the engine to be discharged into the atmosphere after passing through the muffler, discharged separately into the cargo box heating channel, or discharged into the atmosphere and cargo box heating channel simultaneously. Furthermore, the flow rate of each direction can be adjusted to control the engine exhaust back pressure and cargo box heating temperature.

[0047] The mining dump truck provided by this utility model is described below. The mining dump truck described below and the adjustable flow exhaust conversion device described above can be referred to in correspondence.

[0048] The present invention provides a mining dump truck, which may include an adjustable flow exhaust conversion device as described in any of the above embodiments.

[0049] The beneficial effects achieved by the mining dump truck provided by this utility model are consistent with the beneficial effects achieved by the adjustable flow exhaust conversion device provided by this utility model, so they will not be repeated here.

[0050] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0051] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0052] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An adjustable flow exhaust switching device, comprising: The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices.

2. A flow-regulated exhaust switching device according to claim 1, wherein The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices.

4. An adjustable flow exhaust switching device according to claim 2, wherein The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. The application relates to a kind of adjustable flow exhaust conversion devices. 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The application relates to a kind of The welding box is internally fixed with a ring-shaped base serving as the limiting component, the ring-shaped base is coaxial with the round through hole on the welding box, and the rotating rod is inserted into the ring-shaped base after penetrating the round through hole; The upper region of the rotating rod is externally threaded, a set of sealing washers and nuts serving as the limiting and sealing components are installed in the welding box, and the nut is welded with the rotating rod; a set of sealing washers and nuts serving as the sealing components are installed outside the welding box, and the sealing washers are pressed by rotating the nut.

7. The adjustable flow exhaust switching device according to claim 4, characterized in that: The switching wrench is fixed with a mounting component for storing a fixing nut, the fixing nut is removed from the mounting component during use, and cooperates with the fixing bolt to fix the switching wrench on the sliding base.

8. The adjustable flow exhaust switching device according to claim 7, characterized in that: The mounting component is a bolt, and the bolt and the fixing nut are fixed or unfixed by the internal and external thread cooperation.

9. The adjustable flow exhaust switching device according to claim 1, characterized in that: The welding box is welded by a side bending plate, a lower bending plate and an upper bending plate; At least one mounting hole is arranged on each of the two ear plates extending from the side bending plate, and the welding box can be fixed on the muffler by cooperating with the bolt.

10. A mine dump truck, characterized in that: It comprises the adjustable flow exhaust switching device according to any one of claims 1 to 9.

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