Carriage heating device of dump truck

Abstract

The utility model relates to the field of truck compartment heating, in particular to a dump truck compartment heating device which comprises a combination part and an air duct capable of being communicated with an exhaust pipe through the combination part, the air duct is arranged at the bottom of a compartment and distributed in a net shape, and the combination part comprises a combination body and a contact piece which is in sliding and elastic connection with the combination body. The air duct can communicate with the exhaust pipe through the contact piece and the combination body. By the adoption of the technical scheme, the use efficiency of the vehicle is improved, the construction period is shortened, the construction cost is greatly reduced, and the risks of mechanical damage and damage accidents of the vehicle can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of truck bed heating, specifically to a truck bed heating device for dump trucks. Background Technology

[0002] Shallow coal mining primarily utilizes open-pit mining. The first step in open-pit mining is the stripping of surface soil and rock. This stripped soil and rock is mainly transported from the mining area to a spoil heap by dump trucks. Temperature has a significant impact on construction, especially in northern regions during winter, when ground temperatures can drop to below -10°C to below -30°C. Dump trucks often encounter problems where soil and rock freeze inside the truck bed, making unloading difficult. Using excavators for mechanical clearing is not only inefficient and difficult, but also poses safety risks such as injury to personnel or damage to the truck bed floor, steel frame, and even the exhaust pipe. Utility Model Content

[0003] The present invention aims to provide a heating device for dump truck cargo compartments to solve the problems of low unloading efficiency and safety risks.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a heating device for a dump truck body, including a joint and an air duct that can be connected to an exhaust pipe through the joint. The air duct is located at the bottom of the truck body and is arranged in a mesh pattern. The joint includes a joint body and a contact element that slides and is elastically connected to the joint body. The air duct can be connected to the exhaust pipe through the contact element and the joint body.

[0005] The technical benefits of this solution are: it can improve vehicle utilization efficiency, shorten the construction period, significantly reduce construction costs, and reduce the risk of mechanical damage and accidents to vehicles.

[0006] First, it allows for smooth disposal operations. During cold winter operations, the exhaust gas from the dump truck itself is fully utilized to heat the truck bed. The exhaust gas temperature of dump trucks is relatively high, reaching over 50°C. After entering the ventilation duct through the exhaust pipe, the exhaust gas ensures that the temperature at the bottom of the truck bed is above 5°C, ensuring that the soil and rocks inside the truck bed do not stick to the truck bed. Without the need for additional manpower and resources, the disposal of soil and rocks can be carried out as smoothly as in summer, saving transportation time and improving vehicle utilization efficiency.

[0007] Secondly, it improved vehicle utilization efficiency and reduced construction costs. Under normal circumstances, each vehicle has an effective working time of 18 hours per day and can make 30 trips per day (after loading, transporting the waste to the spoil heap, and then returning to the mining area to load again). During winter construction, if auxiliary equipment is used for cleaning, each car requires 10 to 20 minutes of specialized auxiliary equipment to clean completely. Assuming an average of 15 minutes, only 22 trips can be made per day, 8 fewer trips, and 240 fewer trips per month.

[0008] Each truck carries 43 m³ per trip. After adopting this improved process, each truck can transport an additional 10,320 m³ per month. Calculated at 8 yuan / m³, this amounts to approximately 22,500 yuan. If winter construction is calculated for two months, the cost per truck would be 45,000 yuan.

[0009] Based on the current normal operation of 65 units in the project department, the annual savings are 2.925 million yuan. In addition, with the savings in auxiliary equipment and personnel, the annual savings can exceed 3 million yuan.

[0010] In addition, safety risks are reduced. When each carriage is cleaned using an auxiliary excavator, the carriage needs to be lifted, which poses a risk of mechanical injury during the cleaning process and can easily damage the vehicle. With this solution, this risk is eliminated.

[0011] Preferably, as an improvement, the air duct is formed by connecting square steel at the bottom of the carriage.

[0012] The technical benefits of this solution are: the square steel at the bottom of the carriage is used to reinforce the bottom of the carriage, and the improvement of the existing structure of the carriage to obtain the air duct is more practical.

[0013] Preferably, as an improvement, the air duct includes an air inlet and an air outlet, which are located on the floor plate of the carriage or on the square steel at the bottom of the carriage and are connected to the air duct. The air inlet can be connected to a contact element.

[0014] The technical advantage of this solution is that the air inlet and exhaust outlet can be installed on the floor of the carriage or on the square steel at the bottom of the carriage, as long as they are connected to the air duct.

[0015] Preferably, as an improvement, the air intake and exhaust ports are each located at one end of the bottom of the carriage, and the air intake and exhaust ports are also each located on one side of the bottom of the carriage.

[0016] The technical effect of this solution is to expand the path through which the exhaust gas passes.

[0017] Preferably, as an improvement, it also includes a flange and a three-way valve mounted on the frame and capable of connecting the exhaust pipe and the connecting body. The connecting body and the three-way valve are connected by the flange. Both the contact element and the connecting body are tubular and one end of the contact element is flanged. A spring is sleeved on the outer wall of the connecting body. One end of the spring abuts against the flange and the other end of the spring abuts against the flanged position.

[0018] The technical effect of this solution is that by using springs to press the contact parts and air inlet together, heat loss can be reduced.

[0019] Preferably, as an improvement, a limiting groove is provided on the main body along its axial direction, and a limiting rod is fixed on the contact member and the limiting rod is slidably disposed in the limiting groove.

[0020] The technical effect of this solution is that it can limit the movement limit position of the contact element and prevent the contact element from rotating.

[0021] Preferably, as an improvement, sealing rings are provided at the flange position and between the contact part and the connecting body.

[0022] The technical effect of this solution is to improve sealing performance.

[0023] Preferably, as an improvement, the three-way valve includes a valve body, a ball core rotatably disposed within the valve body, and a valve stem fixedly connected to the ball core and rotatably connected to the valve body. The valve body is provided with an exhaust port, and the ball core is provided with a first valve passage and a second valve passage that are interconnected. The first valve passage is connected to an exhaust pipe, and the second valve passage is connected to an air duct and an exhaust port, respectively.

[0024] The technical effect of this solution is that in summer and autumn, or in early spring and late autumn when the temperature is above 0℃, the exhaust gas of the dump truck is discharged through the exhaust port through the three-way valve; in winter, or when the temperature is below 0℃, the exhaust gas is introduced into the air duct through the three-way valve.

[0025] Preferably, as an improvement, both the exhaust port and the exhaust outlet are connected to the tail end of the exhaust pipe.

[0026] The technical effect of this solution is to standardize the location of exhaust gas emissions. Attached Figure Description

[0027] Figure 1 This is a three-dimensional view of an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the air duct of this utility model;

[0029] Figure 3 This is a three-dimensional view of the three-way valve and the connecting part of this utility model;

[0030] Figure 4 This is a cross-sectional view of the joint of this utility model;

[0031] Figure 5 This is a 3D diagram of the valve core and valve stem. Detailed Implementation

[0032] The following detailed description illustrates the specific implementation method:

[0033] The reference numerals in the accompanying drawings include: air duct 1, car body floor 2, air inlet 3, exhaust port 4, connecting body 5, contact element 6, limiting groove 7, limiting rod 8, valve body 9, valve stem 10, exhaust port 11, first valve channel 12, and second valve channel 13.

[0034] The basic implementation examples are as follows: Figure 1-5 As shown: Figure 1 The dump truck bed heating device shown includes an air duct 1, a joint, and a three-way valve. The air duct 1 is located at the bottom of the truck bed, below the floor 2, and is arranged in a mesh pattern. Figure 2 As shown, the air duct 1 is formed by connecting the square steel at the bottom of the carriage. The air duct 1 includes an air inlet 3 and an exhaust outlet 4. The air inlet 3 and the exhaust outlet 4 are located on the bottom plate 2 of the carriage or on the square steel at the bottom of the carriage, and can be connected to the air duct 1. In this scheme, the air inlet 3 and the exhaust outlet 4 are located on the square steel at the bottom of the carriage. The air inlet 3 and the exhaust outlet 4 are staggered, that is, the air inlet 3 and the exhaust outlet 4 are each located at one end of the bottom of the carriage, and the air inlet 3 and the exhaust outlet 4 are also each located on one side of the bottom of the carriage.

[0035] Air duct 1 can be connected to the exhaust pipe of the dump truck through a joint and a three-way valve, such as Figure 3 , 4 As shown, the joint includes a connecting body 5 and a contact element 6 slidably disposed within the connecting body 5. Both the contact element 6 and the connecting body 5 are tubular, and the upper end of the contact element 6 is flanged. The connecting body 5 is connected to the flange of a three-way valve. A spring is sleeved on the outer wall of the connecting body 5, with one end of the spring abutting against the flange and the other end abutting against the flanged position. Sealing rings are provided on the upper surface of the flanged position and between the contact element 6 and the connecting body 5. In addition, a limit groove 7 is formed along the axial direction on the connecting body 5, and a limit rod 8 is welded to the contact element 6, with the limit rod 8 slidably disposed within the limit groove 7.

[0036] like Figure 3 , 5 As shown, the three-way valve is mounted on the vehicle frame and connects the exhaust pipe to the connecting body 5, contact 6, and air duct 1. The three-way valve includes a valve body 9, a ball core rotatably disposed within the valve body 9, and a valve stem 10 welded to the ball core and rotatably connected to the valve body 9. The valve body 9 has an exhaust port 11, and the ball core has a first valve passage 12 and a second valve passage 13 that are perpendicular to each other and connected. The first valve passage 12 is connected to the exhaust pipe, and the second valve passage 13 can be connected to the air duct 1 and the exhaust port 11 respectively when the valve stem 10 drives the ball core to rotate. Of course, a solenoid valve can also be used for the three-way valve. The aforementioned exhaust hole 4 and exhaust port 11 are both connected to the tail end of the exhaust pipe.

[0037] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A heating device for the cargo box of a dump truck, characterized in that: It includes a joint and an air duct that can communicate with the exhaust pipe through the joint. The air duct is located at the bottom of the vehicle body and is arranged in a mesh pattern. The joint includes a joint body and a contact element that slides and is elastically connected to the joint body. The air duct can communicate with the exhaust pipe through the contact element and the joint body.

2. The dump truck cargo box heating device according to claim 1, characterized in that: The air duct is formed by connecting square steel sections at the bottom of the carriage.

3. The dump truck cargo box heating device according to claim 2, characterized in that: The air duct includes an air inlet and an air outlet, which are located on the floor of the carriage or on the square steel at the bottom of the carriage and are connected to the air duct. The air inlet can be connected to the contact parts.

4. The dump truck cargo box heating device according to claim 3, characterized in that: The air intake and exhaust ports are each located at one end of the bottom of the carriage, and also on one side of the bottom of the carriage.

5. The dump truck cargo box heating device according to claim 4, characterized in that: It also includes a flange and a three-way valve mounted on the frame that connects the exhaust pipe and the assembly body. The assembly body and the three-way valve are connected by a flange. Both the contact element and the assembly body are tubular and one end of the contact element is flanged. A spring is fitted on the outer wall of the assembly body. One end of the spring abuts against the flange and the other end of the spring abuts against the flanged position.

6. The dump truck cargo box heating device according to claim 5, characterized in that: The main body is provided with a limiting groove along its axial direction, and a limiting rod is fixed on the contact part and the limiting rod is slidably disposed in the limiting groove.

7. The dump truck cargo box heating device according to claim 6, characterized in that: Sealing rings are provided at the flanged area and between the contact parts and the mating body.

8. The dump truck cargo box heating device according to claim 7, characterized in that: The three-way valve includes a valve body, a ball core rotatably disposed within the valve body, and a valve stem fixedly connected to the ball core and rotatably connected to the valve body. The valve body is provided with an exhaust port, and the ball core is provided with a first valve passage and a second valve passage that are interconnected. The first valve passage is connected to the exhaust pipe, and the second valve passage can be connected to the air duct and the exhaust port respectively.

9. The dump truck cargo box heating device according to claim 8, characterized in that: Both the exhaust port and the exhaust outlet are connected to the tail end of the exhaust pipe.

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