A milling machine and its ceiling air conditioning system

Abstract

This invention discloses an air conditioning system for a folding roof, including an air conditioning compressor, an evaporator, a left air outlet, and a right air outlet. The air conditioning compressor is driven by an engine on the vehicle frame to compress refrigerant. The air conditioning compressor is connected to the evaporator through refrigerant piping, and the evaporator is connected to the left and right air outlets through ducts. The left and right air outlets are fixed to the left and right sides of the vehicle frame, respectively, with their outlets facing the left and right seats on the vehicle frame, respectively. This invention also discloses a milling machine equipped with the above-mentioned air conditioning system for a folding roof. The air conditioning system for a folding roof provided by this invention not only meets the cooling needs of different operating positions on the left and right sides of a normal milling machine, improving the driving and riding comfort of the driver and passengers, but also allows for adjustable air outlet height to meet the transportation height requirements after the roof is folded.

Description

Technical Field

[0001] This invention relates to a milling machine and its folding roof air conditioning system, belonging to the technical field of road special machinery and equipment. Background Technology

[0002] Road milling machines are specialized machinery used for highway and urban road maintenance. They are mainly used for excavating and repairing asphalt concrete surfaces in highways, airports, docks, parking lots, etc., removing road defects such as ruts, cracks, bumps, and road markings, and roughening and milling uneven surfaces on cement roads. Currently, most milling machines are equipped with open folding canopies, and the operating conditions are usually hot, resulting in poor comfort for drivers and passengers. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a milling machine and its folding canopy air conditioning system, which can meet the cooling needs of different positions of the left and right operation of the milling machine during normal operation and improve the driving and riding comfort of the driver and passengers; furthermore, the present invention provides a milling machine and its folding canopy air conditioning system, which can ensure that the canopy can be folded normally during the transportation of the whole machine without affecting the transportation height of the whole machine.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] An air conditioning system for a folding roof includes an air conditioning compressor, an evaporator, a left air outlet, and a right air outlet. The air conditioning compressor is driven by an engine on the vehicle frame to compress refrigerant. The air conditioning compressor is connected to the evaporator through a refrigeration pipe. The evaporator is connected to the left and right air outlets through ducts. The left and right air outlets are fixed to the left and right sides of the vehicle frame, respectively. The air outlets of the left and right air outlets face the left and right seats on the vehicle frame, respectively.

[0006] The left and right air outlets each include an upper air outlet and a lower air outlet arranged vertically. The upper air outlet and the lower air outlet slide relative to each other, and the upper air outlet and the lower air outlet are securely fixed together by tightening the handle.

[0007] The lower end of the upper air vent is fitted onto the upper end of the lower air vent, and a sealing strip is provided on the outer ring of the lower air vent, which contacts the inner ring of the upper air vent.

[0008] A fixing seat is provided inside the downwind vent, and the fixing seat is used to install the limiting bolt. A guide limiting rod is vertically provided inside the upwind vent. The fixing seat at the upper end of the guide limiting rod is fixed to the upwind vent by bolts, and the limiting bolt passes through the guide groove.

[0009] Limiting seats are respectively provided on opposite sides of the downwind vent. Each limiting seat includes a pad, which is located between the upwind vent and the downwind vent. Cylindrical seats are provided at the upper and lower ends of the pad, and threaded holes are drilled on the cylindrical seats for fixing the tightening handle.

[0010] The evaporator is mounted inside a toolbox on the vehicle frame. The toolbox is sealed and has an air inlet for the evaporator to draw air outwards. An air conditioning filter is mounted on the toolbox close to the air inlet.

[0011] A temperature sensor is installed on the evaporator. The temperature sensor is electrically connected to the signal input terminal of the controller, and the signal output terminal of the controller is electrically connected to the power switch of the air conditioning compressor.

[0012] A milling machine equipped with the aforementioned air conditioning system for a folding roof.

[0013] The beneficial effects of this invention are as follows: This invention provides a milling machine and its folding canopy air conditioning system. The air conditioning system is installed on the frame of the milling machine. The left and right air outlets of the air conditioning system face the left and right seats on the frame, respectively, which can meet the cooling needs of different positions when operating the milling machine normally, improving the driving and riding comfort of the driver and passengers. Both the left and right air outlets are composed of an upper air outlet and a lower air outlet. The upper air outlet can slide up and down over the lower air outlet, and the height of the upper and lower air outlets is controllable. The air conditioning outlets can be raised and lowered to ensure that the canopy can be folded normally during the transportation of the whole machine without affecting the overall transportation height. The temperature sensor inside the air conditioning evaporator measures the ambient temperature inside the toolbox, forming a small sealed cab environment. This ensures that the air conditioning compressor can temporarily stop the cooling function after reaching the predetermined temperature, thereby improving the service life of the compressor. Attached Figure Description

[0014] Figure 1 This is a layout diagram of an air conditioning system for a folding roof according to the present invention (when the roof is raised);

[0015] Figure 2 This is a layout diagram of an air conditioning system for a folding roof according to the present invention (when the roof is folded);

[0016] Figure 3 This is a layout diagram of an air conditioning system for a folding roof according to the present invention;

[0017] Figure 4 This is a front view of the right air vent in this invention;

[0018] Figure 5 This is a cross-sectional view of the right air vent in this invention. Figure 1 ;

[0019] Figure 6 This is a cross-sectional view of the right air vent in this invention. Figure 2 ;

[0020] Figure 7 This is a schematic diagram of the guide limiting rod in this invention;

[0021] Figure 8 This is a schematic diagram of the limiting seat in this invention;

[0022] Figure 9 This is a front view of the toolbox in this invention;

[0023] The diagram is labeled as follows: 1-Frame; 2-Right seat; 3-Air conditioning system; 4-Roof; 5-Left seat; 6-Toolbox; 7-Engine; 8-Right air vent; 9-Left air vent; 10-Evaporator; 11-Air conditioning compressor; 12-Condenser core; 13-Air outlet; 14-Tightening handle; 15-Upper air vent; 16-Lower air vent 1; 17-Guide limit rod; 18-Fixed seat; 19-Limit seat; 20-Sealing strip; 21-Limit bolt; 17-1-Fixed seat; 17-2-Guide groove; 19-1-Pad; 19-2-Threaded hole; 19-3-Cylindrical seat; 6-1-Air inlet. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the scope of protection of the present invention.

[0025] Existing milling machines include a frame 1, a left seat 5 and a right seat 2 mounted on the frame for easy driver operation, a guardrail assembly, a toolbox 6, and an engine 7, as well as a retractable canopy 4 mounted on the frame 1. This invention provides a folding canopy air conditioning system installed in front of the left seat 5 and right seat 2. The air conditioning system includes an air conditioning compressor 11 driving the engine 7 to compress refrigerant, which is then delivered through refrigeration pipes to an evaporator 10 installed in the toolbox 6. The evaporator 10 cools the incoming air and delivers it through ducts to a right air vent 8 and a left air vent 9 mounted on the frame, and then blows it out through the outlets. Figure 1 , Figure 3 As shown, the left air outlet 9 and the right air outlet 8 are fixed to the frame 1, with the air outlets facing the right seat 2 and the left seat 5, meeting the cooling needs of different positions for normal milling machine operation. The frame 1 is equipped with a radiator, and a condenser core 12 is located at the cold air inlet of the radiator.

[0026] like Figure 2 and Figure 4As shown, both the left air outlet 9 and the right air outlet 8 consist of an upper air outlet 15 and a lower air outlet 16. The upper air outlet 15 is fitted onto the lower air outlet 16 and can slide up and down. When the whole machine is in the transport state, the canopy 1 is folded. At this time, the upper air outlet 15 slides downward relative to the lower air outlet 16. The upper and lower air outlets are fixed securely by tightening the handle 14.

[0027] like Figure 5 , Figure 6 and Figure 7 As shown, a fixed seat 18 is welded on the lower air vent 16 for installing the limiting bolt 21. The upper fixed seat 17-1 of the guide limit rod 17 is fixed to the upper air vent 15 by a moving bolt. The limiting bolt 21 passes through the guide groove 17-2 to ensure that the height position of the upper and lower air vents is controllable when the upper and lower air vents are raised and lowered, and the air conditioning outlet can be raised and lowered to ensure that the canopy 4 can be folded normally during the transportation of the whole machine without affecting the transportation height of the whole machine.

[0028] like Figure 5 As shown, a sealing strip 20 is fixed between the upper air vent 15 and the lower air vent 16. The sealing strip 20 is located on the outer ring of the lower air vent 16 and contacts the inner ring of the upper air vent 15 to ensure that there is no air leakage between the upper and lower air vents. This can prevent cold air from leaking out from the gap between the upper and lower air vents. When the upper and lower air vents slide up and down, the position of the upper and lower air vents can be fixed by tightening the handle 14.

[0029] Figure 6 and Figure 8 As shown, a limiting seat 19 is welded onto the lower air vent 16. A pad 19-1 is located between the upper and lower air vents. Adjusting the gap between the two controls the amount of swaying during sliding. A threaded hole 19-2 is drilled into the cylindrical seat 19-3. The threaded hole 19-2 is not drilled through to ensure that cold air will not leak from the threaded hole 19-2. At the same time, the threaded hole 19-2 is used to fix the tightening handle 14.

[0030] Figure 1 and Figure 9 As shown, the evaporator 10 is assembled inside the toolbox 6. The toolbox is sealed, leaving only one air inlet 6-1 for the evaporator to draw air out. An air conditioning filter is installed close to the air inlet. By controlling the size of the air inlet and the thickness of the filter, the amount of hot and cold air exchanged at the air inlet 6-1 can be controlled, and the air intake of the air conditioner can be adjusted to meet a fixed value.

[0031] The evaporator 10 is equipped with a temperature sensor, which is electrically connected to the signal input terminal of the controller. The signal output terminal of the controller is electrically connected to the power switch of the air conditioning compressor 11. When the temperature inside the toolbox is lower than the preset temperature, the sensor transmits a signal to the controller, which then controls the air conditioning compressor 11 to stop cooling. At this time, the air inlet 6-1 continuously draws in hot air from the outside. When the temperature exceeds the preset value, the air conditioning compressor 11 resumes cooling, thus allowing the air conditioning compressor 11 to cool down briefly. This invention uses a temperature sensor inside the air conditioning evaporator 10 to measure the ambient temperature inside the toolbox, creating a small, sealed cab environment. This ensures that the air conditioning compressor 11 can temporarily stop cooling after reaching the preset temperature, thereby improving the service life of the compressor 11.

[0032] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An air conditioning system for a folding canopy, characterized in that: The vehicle includes an air conditioning compressor (11), an evaporator (10), a left air outlet (9), and a right air outlet (8). The air conditioning compressor (11) is driven by the engine (7) on the vehicle frame (1) to compress the refrigerant. The air conditioning compressor (11) is connected to the evaporator (10) through a refrigeration pipe. The evaporator (10) is connected to the left air outlet (9) and the right air outlet (8) through air ducts. The left air outlet (9) and the right air outlet (8) are fixed to the left and right sides of the vehicle frame (1), respectively. The air outlets of the left air outlet (9) and the right air outlet (8) face the left seat (5) and the right seat (5) on the vehicle frame (1), respectively. 2) The left air outlet (9) and the right air outlet (8) each include an upper air outlet (15) and a lower air outlet (16) respectively. The upper air outlet (15) and the lower air outlet (16) slide relative to each other. The upper air outlet (15) and the lower air outlet (16) are fixed securely by tightening the handle (14). The evaporator (10) is installed inside the toolbox (6) on the frame (1). The toolbox (6) is sealed. The toolbox (6) has an air inlet (6-1) for the evaporator (10) to draw air out. An air conditioning filter is installed on the toolbox (6) close to the air inlet (6-1).

2. The air conditioning system for a folding canopy according to claim 1, characterized in that: The lower end of the upper air outlet (15) is fitted onto the upper end of the lower air outlet (16), and a sealing strip (20) is provided on the outer ring of the lower air outlet (16), and the sealing strip (20) is in contact with the inner ring of the upper air outlet (15).

3. The air conditioning system for a folding canopy according to claim 1, characterized in that: A fixing seat (18) is provided inside the downwind opening (16), and the fixing seat (18) is used to install the limiting bolt (21). A guide limiting rod (17) is vertically provided inside the upwind opening (15). The fixing seat (17-1) at the upper end of the guide limiting rod (17) is fixed to the upwind opening (15) by bolts. The limiting bolt (21) passes through the guide groove (17-2) on the guide limiting rod (17).

4. The air conditioning system for a folding canopy according to claim 1, characterized in that: Limiting seats (19) are respectively provided on opposite sides of the downwind outlet (16). The limiting seat (19) includes a pad (19-1). The pad (19-1) is located between the upwind outlet (15) and the downwind outlet (16). The upper and lower ends of the pad (19-1) are provided with cylindrical seats (19-3). The cylindrical seats (19-3) are drilled with threaded holes (19-2). The threaded holes (19-2) are used to fix the tightening handle (14).

5. The air conditioning system for a folding canopy according to claim 1, characterized in that: A temperature sensor is provided on the evaporator (10), the temperature sensor is electrically connected to the signal input terminal of the controller, and the signal output terminal of the controller is electrically connected to the power switch of the air conditioning compressor (11).

6. A milling machine, characterized in that: The device is equipped with an air conditioning system for a folding roof as described in any one of claims 1 to 5.

Images