Cab and tractor

Abstract

The utility model provides a tractor cab and tractor. The utility model discloses floor assembly, front windshield, first mudguard, second mudguard, sunken type cavity, air heater, warm air duct, first air outlet, second air outlet and one -way exhaust device. The air heater is located in the sunken type cavity, and the warm air duct extends to the first mudguard front end surface from the air heater along the vertical end surface, and the first air outlet and the second air outlet are located on the first mudguard and are connected with the warm air duct, and the first air outlet is towards the side of the front windshield away from the first mudguard. The first air outlet is towards the side of the front windshield close to the first mudguard. The utility model discloses the air heater is equipped in the cab, and the warm air duct is guided to the first mudguard side, and the hot air that blows is blown to the foot area from the first air outlet and the second air outlet, improves the defrosting effect of the front windshield, improves the temperature of the lower part of the cab, and improves the cab comfort.

Description

Technical Field

[0001] This utility model relates to an agricultural machine, and more particularly to a cab and a tractor. Background Technology

[0002] In existing technology, tractors only have air conditioning vents in the roof area. In cold winters, on the one hand, due to the rising of hot air, the temperature at the bottom of the cab is relatively low, resulting in ineffective heating and affecting cab comfort. On the other hand, with the widespread adoption of floor-to-ceiling windshields in tractors, relying solely on air conditioning vents for defrosting the glass has limited effectiveness, and sometimes the bottom glass is not even defrosted, impacting user experience. Therefore, it is necessary to provide a tractor cab that overcomes the aforementioned shortcomings. Utility Model Content

[0003] The purpose of this utility model is to provide a driver's cab and a tractor.

[0004] According to one aspect of the present invention, a tractor cab is provided, with the forward direction of the tractor as the front, comprising:

[0005] A floor assembly, comprising a first floor layer, a vertical end face, and a second floor layer arranged sequentially from top to bottom to form a stepped structure;

[0006] A windshield, wherein the windshield is disposed in front of the second floor layer;

[0007] A first mudguard is disposed on one side of the floor assembly;

[0008] A sunken cavity is located below the first floor layer, and the vertical end face is an open surface near the vertical end face.

[0009] A heater, wherein the heater is located within the recessed cavity;

[0010] A warm air duct is connected to the outlet of the heater and extends from the heater along the vertical end face to the front end face of the first mudguard.

[0011] The first air outlet is located on the first mudguard and connected to the warm air duct. The first air outlet faces the side of the windshield away from the first mudguard.

[0012] The second air outlet is located on the first mudguard and connected to the warm air duct. The first air outlet faces the side of the windshield closest to the first mudguard.

[0013] Preferably, the sunken cavity is located on the side near the first mudguard, and the outlet of the heater is inclined and faces the first mudguard.

[0014] Preferably, the warm air blower includes a first fan and a first heat exchanger, wherein the first fan introduces air heated by the second heat exchanger into the warm air duct through a second fan.

[0015] Preferably, the floor assembly is provided with a ceiling assembly, and the ceiling assembly has a second heat exchanger, a second fan and an air conditioning duct in its interlayer. The second fan guides the air heated or cooled by the second heat exchanger into the air conditioning duct.

[0016] The air conditioning duct is provided with a third air outlet and a fourth air outlet. The third air outlet faces the side of the windshield away from the first mudguard, and the fourth air outlet faces the side of the windshield close to the first mudguard.

[0017] Preferably, both the second heat exchanger and the first heat exchanger are connected to the engine water tank pipeline, and a shut-off valve is provided on the pipeline.

[0018] Preferably, an airflow channel is provided between the warm air duct and the open surface, and a one-way exhaust device is provided on the rear end face of the sunken cavity.

[0019] Preferably, the one-way exhaust device includes:

[0020] First casing;

[0021] An airflow channel is formed inside the first housing and extends through the front and rear sides of the first housing;

[0022] A support frame, which is inclinedly disposed within the airflow channel;

[0023] The blade is rotatably mounted on the support frame at its upper part. The blade adheres to the support frame by its own weight and can block the airflow in the airflow channel from passing from the rear to the front.

[0024] A filter element is disposed within the airflow channel, and the filter element is located behind the blade and at a predetermined distance from the blade.

[0025] A second cover is fitted behind the first cover, and the second cover is provided with a grid that allows airflow.

[0026] Preferably, the rear end face of the recessed cavity is provided with a mounting hole, the front side of the first cover is engaged in the mounting hole by a snap-fit ​​assembly, and a sealing element is also provided between the front side of the first cover and the rear end face of the recessed cavity.

[0027] Preferably, the upper part of the support frame is provided with a rotating member, the rotating member includes a main body and a limiting part provided at the end of the main body, the blade is provided with a through hole, the blade is hung on the rotating member through the through hole, and the through hole is clearance-fitted with the main body.

[0028] Preferably, the angle between the support frame and the rear end face of the sunken cavity is 15 to 45°, the angle between the rear end face of the sunken cavity and the vertical plane is 10 to 20°, and when the blade rotates to its maximum angle, a predetermined gap is left between the lower part of the blade and the filter element.

[0029] According to another aspect of the present invention, a tractor is provided, including the aforementioned cab.

[0030] Compared with the prior art, the tractor cab provided by this utility model has the following beneficial effects: By equipping the cab with a heater, the hot air is guided to the side of the first mudguard through the warm air duct, and blown from the first air outlet and the second air outlet to the foot area, which improves the defrosting effect of the windshield, increases the temperature of the lower part of the cab, and enhances the comfort of the cab. Attached Figure Description

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0032] Figure 1 This is a schematic diagram of the tractor structure in this utility model;

[0033] Figure 2 This is a schematic diagram of the tractor cab in this utility model;

[0034] Figure 3 This is a structural schematic diagram of the tractor cab floor assembly in this utility model;

[0035] Figure 4 This is a top view of the tractor cab floor assembly in this utility model;

[0036] Figure 5 This is a schematic diagram showing the arrangement of the heater and the heating duct in this utility model;

[0037] Figure 6 This is a schematic diagram of the structure of the heating fan of this utility model.

[0038] Figure 7 This is a schematic diagram of the air conditioning duct structure in this utility model.

[0039] Figure 8 This is a schematic diagram of the unidirectional exhaust device and floor assembly in this utility model.

[0040] Figure 9 This is an exploded schematic diagram of the one-way exhaust device in this utility model;

[0041] Figure 10 This is a schematic diagram of the unidirectional exhaust device in this utility model;

[0042] Figure 11 This is a front view of the one-way exhaust device in this utility model;

[0043] Figure 12 The one-way exhaust device in this utility model (i.e. Figure 11 A sectional view of section AA (in the middle section);

[0044] Figure 13 This is a cross-sectional view of the one-way exhaust device in the installed state of this utility model;

[0045] Figure 14 The rotating component in this utility model (i.e. Figure 13 A magnified view of a portion of region A in the middle;

[0046] Explanation of reference numerals in the attached figures:

[0047] 1. Floor assembly; 11. First floor layer; 111. First mounting groove; 112. Second mounting groove; 12. Vertical end face; 13. Second floor layer; 14. Recessed cavity; 141. Sheet metal part; 142. Mounting hole;

[0048] 2. Windshield;

[0049] 3a. First mudguard; 3b. Second mudguard;

[0050] 4. Warm air blower; 41. First fan; 42. First heat exchanger; 421. Inlet pipe; 422. Outlet pipe;

[0051] 5. Warm air duct; 51. First air outlet; 52. Second air outlet;

[0052] 6. Ceiling assembly; 61. Second fan; 62. Second heat exchanger; 63. Air conditioning duct; 631. Third air outlet; 632. Fourth air outlet;

[0053] 7. Driver's seat;

[0054] 8. One-way exhaust device; 81. First cover; 811. Airflow channel; 812. Snap-fit ​​assembly; 8121. Blocking surface; 8122. Snap-fit ​​surface; 8123. Wedge-shaped lock; 813. Support frame; 814. Rotating component; 8141. Main body; 8142. Limiting part; 815. First slot; 816. Second limiting block; 82. Sealing component; 83a, 83b. Blades; 831. Through hole; 84. Filter component; 85. Second cover; 851. Grid mesh; 852. Elastic snap; 853. First limiting block. Detailed Implementation

[0055] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0057] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0058] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0059] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0060] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0061] See Figures 1 to 14 This embodiment discloses a tractor cab, which includes a floor assembly 1, a windshield 2, a first mudguard 3a, a second mudguard 3b, a recessed cavity 14, a heater 4, a heater duct 5, a first air outlet 51, a second air outlet 52, and a one-way exhaust device 8.

[0062] The floor assembly 1 includes a first floor layer 11, a vertical end face 12, and a second floor layer 13 arranged sequentially from top to bottom to form a stepped structure. A windshield 2 is located in front of the floor assembly 1. A first mudguard 3a and a second mudguard 3b are respectively located on both sides of the floor assembly 1. A recessed cavity 14 is located below the first floor layer 11. The recessed cavity 14 has an open surface near the vertical end face 12. A heater 4 is located inside the recessed cavity 14. The air duct 5 is connected to the outlet of the heater 4. The air duct 5 extends from the heater 4 along the vertical end face 12 to the front end face of the first mudguard 3a. The first air outlet 51 and the second air outlet 52 are both provided on the first mudguard 3a and connected to the air duct 5. The first air outlet 51 faces the side of the windshield 2 away from the first mudguard 3a. The first air outlet 51 faces the side of the windshield 2 close to the first mudguard 3a.

[0063] In this embodiment, a heater 4 is installed in the cab. The hot air is guided through the warm air duct 5 to the side of the first mudguard 3a, and blown from the first air outlet 51 and the second air outlet 52 towards the foot area. This improves the defrosting effect of the windshield 2, increases the temperature in the lower part of the cab, and enhances cab comfort. Compared to the structure in trucks and construction machinery where the air outlets are located on the vertical end face 12, the first air outlet 51 and the second air outlet 52 in this embodiment are relatively higher than the second floor plate, eliminating the problem of dust blowing and ensuring the cleanliness of the air throughout the cab.

[0064] See appendix Figure 3 , 4The sunken cavity 14 is a right trapezoid with its lower base located on the vertical end face 12. The heater 4 is horizontally and obliquely installed in the sunken cavity 14. The hypotenuse of the right trapezoid is parallel to the side of the heater 4 and located on the side close to the first mudguard 3a. The outlet of the heater 4 is obliquely installed and faces the first mudguard 3a. The heater duct 5 can be partially hidden in the sunken cavity 14, with only a portion of the heater duct 5 exposed on the end face. The exposed area is located on the side of the vertical end face 12 close to the first mudguard 3a, reducing the space occupied by the heater duct 5 in the entire cab.

[0065] See appendix Figure 5 A cover plate is provided above the sunken cavity 14, and the cover plate is fixed to the first floor layer 11. A first mounting groove 111 and a second mounting groove 112 are provided on the first floor layer along the left and right sides of the sunken cavity 14. The first mounting groove 111 and the second mounting groove 112 are used to install the driver's seat 7. In addition, a large gap or airflow channel is provided between the cover plate and the sunken cavity 14 to achieve air pressure communication between the sunken cavity 14 and the driver's cab.

[0066] See appendix Figure 6 The heater 4 includes a first fan 41 and a first heat exchanger 42. The first fan 41 introduces the air heated by the first heat exchanger 42 into the heater duct 5.

[0067] See appendix Figure 7 The roof assembly 6 has a second heat exchanger 62, a second fan 61, and an air conditioning duct 63 within its interlayer. The second fan 61 guides air heated or cooled by the second heat exchanger 62 into the air conditioning duct 63. The air conditioning duct 63 has a third air outlet 631 and a fourth air outlet 632. The third air outlet 631 faces the side of the windshield 2 away from the first mudguard 3a, and the fourth air outlet 632 faces the side of the windshield 2 closer to the first mudguard 3a.

[0068] The third air outlet 631 and the fourth air outlet 632 are not only inclined on the air outlet ducts and directed towards the windshield 2, but also have rotatable and adjustable grid plates at the third air outlet 631 and the fourth air outlet 632 for defrosting the upper part of the windshield 2. Similarly, the first air outlet 51 and the second air outlet 52 are equipped with rotatable and adjustable grid plates for defrosting the lower part of the windshield 2.

[0069] The second heat exchanger 62 and the first heat exchanger 42 are connected to the engine water tank pipeline via a three-way pipe. Hot water from the engine water tank enters the first heat exchanger 42 through the three-way valve and the inlet pipe 421. The first fan 41 exchanges heat with the first heat exchanger 42 and guides the generated hot air into the heater duct 5. The cooled hot water flows back to the engine water tank for further cooling or directly back to the engine through the outlet pipe 422. In addition, a flow valve is installed on the pipeline from the three-way pipe to the inlet pipe 421. The driver can control the opening of the flow valve through the cab to control the heater 4.

[0070] See appendix Figure 3 An airflow channel is provided between the heating air duct 5 and the open surface, and a one-way exhaust device 8 is provided on the rear end face of the recessed cavity 14. The one-way exhaust device 8 can balance the air pressure inside and outside the driver's cab, preventing the door from being ejected due to the air pressure difference when the user closes the door too quickly, thus avoiding safety hazards.

[0071] One-way exhaust devices 8 are common in the automotive industry, but agricultural machinery differs significantly from the automotive sector. Agricultural machinery operates in harsher environments with poorer road conditions and more dust. Directly applying one-way exhaust devices 8 from the automotive field to agricultural machinery would present at least the following problems: Agricultural machinery experiences relatively frequent and intense vibrations, causing the blades 83a and 83b to bounce up repeatedly, rendering the one-way exhaust device 8 ineffective. In other words, the cab interior would become connected to the outside, allowing dust to enter the cab through the one-way exhaust device 8, thus reducing the overall comfort of the tractor.

[0072] See appendix Figure 8 The rear end face of the recessed cavity 14 is a sheet metal part 141, which is located on a reverse inclined surface below the first floor. The sheet metal part 141 has mounting holes 142 for mounting a one-way exhaust device 8. (See reference...) Figures 9 to 14 The one-way exhaust device 8 includes: a first cover 81, an airflow channel 811, a support frame 813, blades 83a / 83b, a filter element 84, a second cover 85, and a sealing element 82.

[0073] See appendix Figure 8The first cover 81 is mounted on the sheet metal part 141 of the cab. The front and rear sides of the first cover 81 are open surfaces. An airflow channel 811 is formed on the first cover 81, which runs through the front and rear sides of the first cover 81. A support frame 813 is inclinedly disposed in the airflow channel 811. The upper parts of the blades 83a and 83b are rotatably mounted on the support frame 813. The blades 83a and 83b adhere to the support frame 813 by their own weight and can block the airflow in the airflow channel 811 from passing from the rear to the front. The filter element 84 is disposed in the airflow channel 811. The filter element 84 is located behind the blades 83a and 83b and is at a predetermined distance from the blades 83a and 83b. The second cover 85 is snapped onto the rear side of the first cover 81. The second cover 85 is provided with a grid 851 that allows airflow to pass through.

[0074] In this embodiment, a filter element 84 is disposed between the second cover 85 and the blades 83a and 83b. When the tractor's one-way exhaust device 8 fails, the filter element structure of the filter element 84 effectively blocks external particles, protecting the air environment inside the vehicle. When the tractor door is closed, the air pressure difference between the inside and outside of the cab drives the blades 83a and 83b to open, achieving automatic exhaust and air pressure balance. The reverse blowing effect generated during the airflow discharge process automatically cleans the dust on the surface of the filter element 84, extending the service life of the filter element 84.

[0075] See appendix Figure 10 , 12 The front side of the first cover 81 is provided with a snap-fit ​​assembly 812, and the one-way exhaust device 8 is snapped into the mounting hole 142 through the snap-fit ​​assembly 812. The snap-fit ​​assembly 812 includes a blocking surface 8121, a snap-fit ​​surface 8122, and a wedge-shaped latch 8123. The snap-fit ​​surface 8122 is coaxially arranged with the first cover 81 and protrudes from the front end face of the first cover 81. The blocking surface 8121 connects the snap-fit ​​surface 8122 and the first cover 81. The wedge-shaped latch 8123 is provided on the snap-fit ​​surface 8122 and is spaced a predetermined distance from the blocking surface 8121.

[0076] In the installed state, the snap-fit ​​surface 8122 can be fitted into the mounting hole 142 and the blocking surface 8121 is attached to the sheet metal part 141, the sheet metal part 141 is located between the blocking surface 8121 and the wedge-shaped latch 8123.

[0077] See appendix Figure 12 A sealing element 82 is also provided between the blocking surface 8121 and the sheet metal part 141. The sealing element 82 is a rigid sponge. The use of rigid sealing sponge instead of traditional rubber rings provides both support and sealing, effectively avoiding air leakage caused by the aging of soft materials.

[0078] See appendix Figure 14 The snap-fit ​​surface 8122 extends into the interior of the first cover 81. The support frame 813 is inclinedly disposed on the rear side of the snap-fit ​​surface 8122, and a rotating member 814 is provided on the upper part of the support frame 813. The rotating member 814 includes a body part 8141 and a limiting part 8142 provided on the end of the body part 8141. The blades 83a and 83b are provided with through holes 831. Since the blades 83a and 83b have a certain elasticity, they can be squeezed through the limiting part 8142 into the body part 8141, and the blades 83a and 83b are hung on the rotating member 814 through the through holes 831. The through holes 831 and the body part 8141 are clearance-fitted to realize the relative rotation between the blades 83a and 83b and the body part 8141.

[0079] See appendix Figure 9 , 12 The first cover 81 has a first groove 815 on its outer surface, and the second cover 85 has an elastic buckle 852 on its inner surface. The second cover 85 is fitted over the first cover 81. The first cover 81 and the second cover 85 are divided into front and rear parts, and are made of modified PP material (polypropylene), which has excellent anti-aging and weather resistance. The elastic buckle 852 is fitted into the first groove 815, avoiding the use of penetrating screws or through holes 831, thereby improving sealing performance and appearance integrity.

[0080] See appendix Figure 9 , 12 The second cover 85 is provided with a first limiting block 853, which is used to attach the filter element 84 to the grid 851. The rear side of the first cover 81 is provided with a wedge-shaped second limiting block 816, which is fitted into the filter element 84. The filter element 84 is installed using a snap-fit ​​structure, eliminating the need for screws and other assembly structures, thus reducing assembly steps and time.

[0081] When the blades 83a and 83b rotate to their maximum angle, the upper parts of the blades 83a and 83b abut against the blocking surface 8121, and a predetermined gap is left between the lower parts of the blades 83a and 83b and the filter element 84. On the one hand, this prevents the blades 83a and 83b from abutting against the filter element 84 and blocking the airflow channel 811; on the other hand, it prevents the blades 83a and 83b from getting stuck on the filter element 844, causing the entire one-way exhaust device 8 to malfunction.

[0082] See appendix Figure 13The blades 83a and 83b close by their own weight to seal the airflow channel 811. Therefore, the tilt angle of the blades 83a and 83b ensures the pressure difference of the entire one-way exhaust valve. In this embodiment, the angle b between the plane of the support frame 813 and the plane of the blocking surface 8121 is 15 to 45°, preferably 30°; the angle a between the sheet metal part 141 and the vertical plane is 10 to 20°, preferably 15°; the tilt angle a+b of the blades 83a and 83b relative to the vertical plane is 25 to 65°, preferably 45°. That is to say, the blades 83a and 83b have stronger anti-interference ability and can filter more small-amplitude vibrations and air pressure changes in the tractor.

[0083] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A tractor cab, with the forward direction of the tractor as the front, characterized in that, include: A floor assembly, comprising a first floor layer, a vertical end face, and a second floor layer arranged sequentially from top to bottom to form a stepped structure; A windshield, wherein the windshield is disposed in front of the second floor layer; A first mudguard is disposed on one side of the floor assembly; A sunken cavity is located below the first floor layer, and the side of the sunken cavity closest to the vertical end face is an open surface. A heater, wherein the heater is located within the recessed cavity; A warm air duct is connected to the outlet of the heater and extends from the heater along the vertical end face to the front end face of the first mudguard. The first air outlet is located on the first mudguard and connected to the warm air duct. The first air outlet faces the side of the windshield away from the first mudguard. The second air outlet is located on the first mudguard and connected to the warm air duct. The first air outlet faces the side of the windshield closest to the first mudguard.

2. The tractor cab as described in claim 1, characterized in that, The sunken cavity is located on the side near the first mudguard, and the outlet of the heater is inclined and faces the first mudguard.

3. The tractor cab as described in claim 2, characterized in that, The heater includes a first fan and a first heat exchanger. The first fan introduces air heated by the second heat exchanger into the heater duct through a second fan.

4. The tractor cab as described in claim 3, characterized in that, The floor assembly is provided with a ceiling assembly, and the ceiling assembly has a second heat exchanger, a second fan and an air conditioning duct in its interlayer. The second fan guides the air heated or cooled by the second heat exchanger into the air conditioning duct. The air conditioning duct is provided with a third air outlet and a fourth air outlet. The third air outlet faces the side of the windshield away from the first mudguard, and the fourth air outlet faces the side of the windshield close to the first mudguard.

5. The tractor cab as described in claim 4, characterized in that, Both the second heat exchanger and the first heat exchanger are connected to the engine water tank pipeline, and a shut-off valve is installed on the pipeline.

6. The tractor cab as described in claim 1, characterized in that, An airflow channel is provided between the warm air duct and the open surface, and a one-way exhaust device is provided on the rear end face of the sunken cavity. The one-way exhaust device includes: First casing; An airflow channel is formed inside the first housing and extends through the front and rear sides of the first housing; A support frame, which is inclinedly disposed within the airflow channel; The blade is rotatably mounted on the support frame at its upper part. The blade adheres to the support frame by its own weight and can block the airflow in the airflow channel from passing from the rear to the front. A filter element is disposed within the airflow channel, and the filter element is located behind the blade and at a predetermined distance from the blade. A second cover is fitted behind the first cover, and the second cover is provided with a grid that allows airflow.

7. The tractor cab as described in claim 6, characterized in that, The rear end face of the recessed cavity is provided with a mounting hole, and the front side of the first cover is snapped into the mounting hole by a snap-fit ​​component. A sealing element is also provided between the front side of the first cover and the rear end face of the recessed cavity.

8. The tractor cab as described in claim 7, characterized in that, The upper part of the support frame is provided with a rotating component, which includes a main body and a limiting part provided at the end of the main body. The blade is provided with a through hole, and the blade is hung on the rotating component through the through hole, and the through hole is clearance-fitted with the main body.

9. The tractor cab as described in claim 8, characterized in that, The angle between the support frame and the rear end face of the sunken cavity is 15 to 45°, the angle between the rear end face of the sunken cavity and the vertical plane is 10 to 20°, and when the blade rotates to its maximum angle, a predetermined gap is left between the lower part of the blade and the filter element.

10. A tractor, characterized in that, Includes the driver's cab as described in any one of claims 1 to 9.

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