Mining truck and its body heating system

Abstract

The utility model relates to the field of mine machinery discloses a mine truck and its car hopper heating system, including the heating case (2) of installation on the frame (1) and form in the heating channel of car hopper wall of car hopper (3), the heating case (2) have the air inlet (21) that communicates to engine exhaust pipe (4) and are connected with the exhaust joint (23) for the heating flue gas that is used for to the heating channel inside into by engine exhaust pipe (4) delivery, the car hopper front wall of car hopper (3) is connected with the air joint (31) that communicates to the heating channel and extends towards the front of vehicle, to make this air joint (31) abuts to the exhaust end of exhaust joint (23) when car hopper (3) moves from the rear position to transport position. Wherein, the heating case can be arranged in the gap between the car hopper, the frame and the deck, avoiding occupying the height space between the car hopper and the frame, not only improve the space utilization of vehicle, also promote the maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery, specifically to a truck bed heating system for a mining truck. Furthermore, this utility model also relates to a mining truck equipped with this truck bed heating system. Background Technology

[0002] Mining trucks are key equipment for rock and soil stripping and ore transportation in open-pit mines, possessing large tonnage carrying capacity and high-intensity transportation characteristics. In cold regions such as severe winters or high latitudes, the excavated materials are frozen. When these materials are transported by mining trucks, the materials are prone to sticking to the cargo box (cargo bed), causing problems such as difficulty in unloading.

[0003] To address this, existing technologies have proposed solutions utilizing high-temperature gases generated by the engine for heating. Specifically, a heating channel can be formed at the bottom of the mining truck's cargo box, into which the high-temperature flue gas generated during engine operation is introduced to heat the cargo box. However, since mining trucks typically unload materials by lifting and tipping the cargo box, the heating box used to introduce the high-temperature gas from the engine into the heating channel, along with its exhaust connector, is located below the cargo box. This allows the cargo box to be pressed against the exhaust connector when it returns to its transport position, thus connecting the engine exhaust pipe to the heating channel at the bottom of the cargo box. This arrangement occupies the vertical space between the cargo box and the chassis, resulting in a cramped layout and inconvenient maintenance. Furthermore, the engine exhaust pipe used to introduce the high-temperature gas into the heating box is usually welded to the heating box as a single unit, which is detrimental to assembly and maintenance. Utility Model Content

[0004] The purpose of this invention is to overcome the problems in existing cargo box heating systems, such as the heating box occupying the height space between the cargo box and the frame, resulting in a crowded arrangement of this space. This invention provides a cargo box heating system for mining trucks. The cargo box heating system adopts a new arrangement, which avoids the heating box occupying the height space between the cargo box and the frame, improves the utilization of vehicle space, and facilitates the disassembly, assembly, and maintenance of the heating box and other related components.

[0005] To achieve the above objectives, this utility model provides a heating system for the cargo bed of a mining truck, including a heating box mounted on the chassis and a heating channel formed in the cargo bed wall. The heating box has an air inlet connected to an engine exhaust pipe and is connected to an exhaust connector for introducing heated flue gas supplied by the engine exhaust pipe into the heating channel. The front wall of the cargo bed is connected to a vent connector that connects to the heating channel and extends toward the front of the vehicle, so that when the cargo bed moves from a rear-tipping position to a transport position, the vent connector abuts against the exhaust end of the exhaust connector.

[0006] Preferably, the exhaust connector extends obliquely upward along the direction from the heating box to the front wall of the truck bed, and when the truck bed moves to the transport position, the vent connector abuts against its exhaust end along the extension direction of the exhaust connector.

[0007] More preferably, the heating box has an exhaust side plate that faces obliquely upward toward the front wall of the truck bed, and the exhaust connector extends along the normal direction of the exhaust side plate.

[0008] More preferably, the exhaust connector includes a connecting pipe connected to the heating box, a movable pipe coaxially and sealed to the connecting pipe, and an elastic element disposed between the movable pipe and the connecting pipe, wherein the movable pipe is connected to overcome the elastic force of the elastic element and move toward the connecting pipe under the abutment pressure of the vent connector.

[0009] More preferably, the outer edges of the connecting pipe and the movable pipe are respectively provided with flange-shaped flanges, and the elastic element includes a plurality of helical springs with both ends abutting against the flange-shaped flanges and evenly distributed in the circumferential direction, so as to apply an axial force to the movable pipe away from the direction of the connecting pipe.

[0010] More preferably, the root of the connecting pipe is provided with a plurality of reinforcing ribs distributed circumferentially at the connection position between it and the heating box.

[0011] Preferably, the heating box is detachably mounted to the vehicle frame, and / or, an air intake connector is connected to the air inlet of the heating box, and the engine exhaust pipe is detachably connected to the air intake connector.

[0012] More preferably, the outer wall surface of the heating box facing the side where the engine exhaust pipe is located is provided with a support weldment, which forms an arc-shaped groove; the engine exhaust pipe is detachably connected to the intake connector by a U-bolt passing through the support weldment, and the arc-shaped groove of the support weldment and the bend of the U-bolt clamp and fix the engine exhaust pipe and the intake connector together with each other.

[0013] More preferably, at the end near the side away from the heating box, a through slot is formed on the pipe wall of the air intake connector, and one end of the engine exhaust pipe is fitted over the air intake connector.

[0014] A second aspect of this utility model provides a mining truck, including the aforementioned truck bed heating system.

[0015] Through the above technical solution, the truck bed heating system of this utility model sets the vent joint for connecting the heating box and the heating channel on the front wall of the truck bed and extends it towards the front of the vehicle. When the truck bed is unloaded and moves from the rear-tipping position to the transport position, the vent joint can abut against the exhaust end of the exhaust joint on the heating box. Thus, the heating box can be arranged in the gap between the truck bed, the frame, and the deck, avoiding occupying the height space between the truck bed and the frame. This novel arrangement not only improves the space utilization of the vehicle, but also eliminates the need to lift the truck bed when disassembling and maintaining the heating box, exhaust joint, etc., thus enhancing convenience.

[0016] In the preferred embodiment of the present invention, the engine exhaust pipe can be detachably connected to the air intake connector of the heating box using U-bolts or the like, which effectively improves the convenience of assembly and maintenance compared to the welding fixing method used in the prior art. Attached Figure Description

[0017] Figure 1 This is a structural view of the connection between the heating box and the engine exhaust pipe and the ventilation connector in a truck bed heating system according to a preferred embodiment of the present invention. Figure 2 yes Figure 1 Exploded view of the connection structure between the intermediate heating box and the engine exhaust pipe; Figure 3 This is a structural view of the arrangement of the heating box in a truck bed heating system according to a preferred embodiment of the present invention on a mining truck.

[0018] Explanation of reference numerals in the attached figures 1-Frame; 2-Heating box; 21-Air inlet; 22-Air inlet connector; 22a-Slotted; 23-Exhaust connector; 231-Connecting pipe; 232-Modible pipe; 233-Coil spring; 234-Flange flange; 235-Reinforcing rib; 24-Exhaust side plate; 25-Support weldment; 26-Mounting base; 27-Bolt; 3-Cargo bed; 31-Ventilator connector; 4-Engine exhaust pipe; 5-U-bolt; 51-Washer; 52-Anti-loosening nut. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" generally refer to the upper, lower, left, and right as shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself.

[0021] Reference Figures 1 to 3 As shown, this utility model provides a heating system for the cargo bed of a mining truck, used to introduce high-temperature flue gas generated during engine operation into the heating channel of the cargo bed to heat the cargo bed and prevent materials from sticking to the cargo bed during transportation. The cargo bed heating system includes a heating box 2 mounted on the chassis 1 and a heating channel formed within the cargo bed wall of the cargo bed 3. The heating box 2 has an exhaust port 21 connected to the engine exhaust pipe 4 and is connected to an exhaust connector 23 for introducing heated flue gas from the engine exhaust pipe 4 into the heating channel of the cargo bed 3.

[0022] The truck bed 3 is provided with a vent connector 31 for docking with the exhaust connector 23. In this truck bed heating system, the vent connector 31 is connected to the front wall of the truck bed 3 and extends towards the front of the vehicle, so that the heating box 2 can be arranged in the gap between the truck bed 3, the frame 1 and the deck. When the truck bed moves from the rear-tipping position to the transport position, the vent connector 31 moves obliquely downward and forward with the movement of the truck bed, thereby abutting against the exhaust end of the exhaust connector 23.

[0023] Therefore, the heated exhaust gas generated by the engine first enters the heating box 2 through the air intake 21, and then is successively introduced into the heating channel inside the truck bed wall through the exhaust connector 23 and the vent connector 31 to provide the heat required for heating. Since the heating box 2 is arranged in the gap between the truck bed, the frame, and the deck, it avoids occupying the height space between the truck bed and the frame. This novel arrangement not only improves the space utilization of the vehicle, but also eliminates the need to lift the truck bed when disassembling and maintaining the heating box 2, exhaust connector 23, etc., thus enhancing convenience.

[0024] Combination Figures 1 to 3 As shown, in a preferred embodiment of the truck bed heating system, the exhaust connector 23 can be configured to extend obliquely upwards along the direction from the heating box 2 towards the front wall of the truck bed; correspondingly, the vent connector 31 can extend obliquely downwards or at least have an obliquely downward opening along the direction from the front wall of the truck bed towards the front of the vehicle. When the truck bed 3 moves to the transport position, the vent connector 31 abuts against its exhaust end along the extension direction of the exhaust connector 23, thereby ensuring that when the truck bed is unloaded and falls back to the transport position, the vent connector 31 and the exhaust connector 23 are sealed together without additional operation.

[0025] To improve the stress on the exhaust connector 23 and prevent damage to the connection structure between the exhaust connector 23 and the heating box 2 due to the squeezing action of the vent connector 31, the heating box 2 can have an exhaust side plate 24 that slopes upward toward the front wall of the truck bed, with the exhaust connector 23 extending along the normal direction of the exhaust side plate 24. With this arrangement, as long as the heating box 2 is installed at a suitable position on the frame 1 and the exhaust connector 23 and the vent connector 31 have appropriate extension lengths, it can be ensured that there is a suitable abutment force between the exhaust connector 23 and the vent connector 31 when the truck bed falls back to the transport position. This reduces the impact load on the connection structure between the exhaust connector 23 and the heating box 2, thus minimizing structural damage while ensuring a sealed connection.

[0026] Furthermore, multiple reinforcing ribs 235 distributed circumferentially may be provided at the connection position between the exhaust connector 23 and the heating box 2 to enhance the connection strength between them. As will be described later, when the exhaust connector 23 is configured to include a connecting pipe 231 connected to the heater 2 and a movable pipe 232 movably connected to the connecting pipe 231, the reinforcing ribs 235 may be provided at the connection position between the root of the connecting pipe 231 and the heating box 2.

[0027] like Figure 2 and Figure 3 As shown, the exhaust connector 23 may include a connecting pipe 231 connected to the heating box 2, a movable pipe 232 coaxially and sealingly connected to the connecting pipe 231, and an elastic element disposed between the movable pipe 232 and the connecting pipe 231. The movable pipe 232 is connected so that it can overcome the elastic force of the elastic element and move toward the connecting pipe 231 under the abutment pressure of the vent connector 31. For example, the movable pipe 232 may be indirectly coaxially connected to the free end of the connecting pipe 231 through an elastic bellows. Thus, the elastic bellows or other forms of elastic element can provide a degree of freedom of relative movement between the movable pipe 232 and the connecting pipe 231, and form a good sealing effect when the vent connector 31 abuts against the movable pipe 232.

[0028] In the preferred embodiment illustrated, the ends of the movable pipe 232 and the connecting pipe 231 are interlocked to allow for axial relative movement. Furthermore, the outer edges of the movable pipe 232 and the connecting pipe 231 are respectively provided with flange-like protrusions 234. Multiple helical springs 233, with their ends abutting against the flange-like protrusions 234 and evenly distributed circumferentially, are configured as elastic elements. These helical springs 233 can apply an axial force to the movable pipe 232 away from the connecting pipe 231 (i.e., towards the vent connector 31). When the truck bed is unloaded and returns to its transport position, the end face of the vent connector 31 presses against the end wall of the movable pipe 232, overcoming the elastic force of the helical springs 233 and axially compressing the movable pipe 232 towards the connecting pipe 231. This causes the helical springs 233 to undergo a certain degree of elastic deformation, thus maintaining good sealing between the movable pipe 232 and the vent connector 31 even under conditions such as bumps.

[0029] In the truck bed heating system of this utility model, such as Figure 3 As shown, the bottom of the heating box 2 may be provided with a mounting base 26, and the mounting base 26 (i.e. the heating box 2) may be detachably installed onto the frame 1 by fasteners such as bolts 27.

[0030] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, an air intake connector 22 can be connected to the air inlet 21 of the heating box 2, and the engine exhaust pipe 4 can be detachably connected to the air intake connector 22. Therefore, compared with the welding fixing method used in the prior art, this truck bed heating system allows the engine exhaust pipe 4 to be separated from the heating box 2, effectively improving the convenience of assembly and maintenance.

[0031] The outer wall of the heating box 2 facing the engine exhaust pipe 4 may be provided with a support weldment 25, which has an arc-shaped groove. The engine exhaust pipe 4 is detachably connected to the intake connector 22 by a U-bolt 5 passing through the support weldment 25. That is, the engine exhaust pipe 4 is first inserted into the intake connector 22 on the heating box 2, and then the connection between the two is clamped and fixed by the U-bolt 5 and the support weldment 25. The two ends of the U-bolt 5 can be screwed with anti-loosening nuts 52, which abut against the side of the support weldment 25 away from the intake connector 22 by means of washers 51. Thus, the arc-shaped groove of the support weldment 25 and the bend of the U-bolt 5 can clamp and fix the engine exhaust pipe 4 and the intake connector 22 together. For example, the arc-shaped groove of the support weldment 25 and the bend of the U-bolt 5 can have the same radius of curvature as the engine exhaust pipe 4.

[0032] Generally, the heating box 2, its air intake connector 22, and the engine exhaust pipe 4 are made of metal. In order to facilitate the insertion of the engine exhaust pipe 4 into the air intake connector 22, a slot 22a extending through the pipe wall in the thickness direction of the pipe wall can be formed on the pipe wall of the air intake connector 22. The slot 22a extends at least to the end of the air intake connector 22 away from the heating box 2. This allows the end of the air intake connector 22 to be gathered so that the engine exhaust pipe 4 can be inserted and fitted onto the outer wall surface of the air intake connector 22, thereby improving the ease of assembly while ensuring the connection seal.

[0033] Another aspect of this utility model provides a mining truck including the above-mentioned truck bed heating system, wherein the heating box of the truck bed heating system is arranged in the gap between the truck bed, the frame and the deck, avoiding occupying the height space between the truck bed and the frame. This new arrangement not only improves the space utilization and component arrangement of the vehicle, but also facilitates assembly and maintenance.

[0034] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A heating system for the cargo bed of a mining truck, characterized in that, The vehicle includes a heating box (2) mounted on the frame (1) and a heating channel formed in the wall of the truck bed (3). The heating box (2) has an air inlet (21) connected to the engine exhaust pipe (4) and is connected to an exhaust connector (23) for introducing heated flue gas delivered by the engine exhaust pipe (4) into the heating channel. The front wall of the truck bed (3) is connected to a vent connector (31) connected to the heating channel and extending toward the front of the vehicle, so that when the truck bed (3) moves from the rear-tipping position to the transport position, the vent connector (31) abuts against the exhaust end of the exhaust connector (23).

2. The truck bed heating system for mining trucks according to claim 1, characterized in that, The exhaust connector (23) extends obliquely upward along the direction from the heating box (2) to the front wall of the truck bed. When the truck bed (3) moves to the transport position, the vent connector (31) abuts against its exhaust end along the extension direction of the exhaust connector (23).

3. The truck bed heating system for mining trucks according to claim 2, characterized in that, The heating box (2) has an exhaust side plate (24) that faces the front wall of the truck bed at an angle upward, and the exhaust connector (23) extends along the normal direction of the exhaust side plate (24).

4. The truck bed heating system for mining trucks according to claim 2, characterized in that, The exhaust connector (23) includes a connecting pipe (231) connected to the heating box (2), a movable pipe (232) coaxially and sealed to the connecting pipe (231), and an elastic element disposed between the movable pipe (232) and the connecting pipe (231). The movable pipe (232) is connected to be able to overcome the elastic force of the elastic element and move toward the connecting pipe (231) under the abutment pressure of the vent connector (31).

5. The truck bed heating system for mining trucks according to claim 4, characterized in that, The outer edges of the connecting pipe (231) and the movable pipe (232) are respectively provided with flange-shaped flanges (234). The elastic element includes a plurality of helical springs (233) with their two ends respectively abutting against the flange-shaped flanges (234) and evenly distributed in the circumferential direction, so as to apply an axial force to the movable pipe (232) away from the connecting pipe (231).

6. The truck bed heating system for mining trucks according to claim 4, characterized in that, The root of the connecting pipe (231) is provided with a plurality of reinforcing ribs (235) distributed circumferentially at the connection position between it and the heating box (2).

7. The truck bed heating system for mining trucks according to claim 1, characterized in that, The heating box (2) is detachably mounted to the vehicle frame (1), and / or, an air inlet connector (22) is connected to the air inlet (21) of the heating box (2), and the engine exhaust pipe (4) is detachably connected to the air inlet connector (22).

8. The truck bed heating system for a mining truck according to claim 7, characterized in that, The heating box (2) has a support weldment (25) on the outer wall facing the side where the engine exhaust pipe (4) is located. The support weldment (25) has an arc groove. The engine exhaust pipe (4) is detachably connected to the air intake connector (22) by a U-bolt (5) passing through the support weldment (25). The arc groove of the support weldment (25) and the bend of the U-bolt (5) clamp and fix the engine exhaust pipe (4) and the air intake connector (22) together.

9. The truck bed heating system for a mining truck according to claim 7, characterized in that, At one end near the heating box (2), a through slot (22a) is formed on the pipe wall of the air intake connector (22), and one end of the engine exhaust pipe (4) is fitted outside the air intake connector (22).

10. A mining truck, characterized in that, Includes the truck bed heating system according to any one of claims 1 to 9.

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