Tractor cab air conditioner air outlet arrangement structure, cab and tractor

Abstract

The utility model relates to vehicle cab ventilation technical field discloses a tractor cab air conditioner air outlet arrangement structure, including cab skeleton and ceiling, and there is air conditioner in the ceiling. The left and right sides of the ceiling outside cab skeleton are equipped with air inlets, which are communicated with the air inlets of the air conditioner; the front windshield air outlet is arranged on the ceiling close to the front windshield, a plurality of air duct outlets are arranged on the periphery of the rear ceiling, the rear side ceiling is provided with a strip air outlet, and the front side left and right stand is provided with a stand air supplement shell, and the air outlets are communicated with the air outlet of the air conditioner. The structure reduces the entry of dust through the outside air inlet, the multiple air outlets are distributed to comprehensively cover the cab, the blind area and direct blowing of air supply are avoided, and the temperature difference is reduced; the indoor air pressure is greater than the outdoor air pressure through the coordinated air supply of the multiple air outlets, dust can be blocked from entering the gap, thereby improving the environmental quality and meeting the comfort requirement of long-time operation.

Description

Technical Field

[0001] This utility model relates to the field of vehicle cab ventilation technology, specifically to a tractor cab air conditioning vent arrangement structure. Background Technology

[0002] In agricultural production, tractors, as important power machinery, often need to operate for long periods of time in dusty fields and other environments. Therefore, the comfort of the cab is crucial to the work efficiency and health of the operators. As a key component to ensure the comfort of the cab, the rationality of the arrangement of the air outlets of the air conditioning system directly affects the cooling and heating effect and the uniformity of air delivery.

[0003] Currently, there are many problems with the arrangement of air outlets in tractor cab air conditioners. Among them, the location of the air inlet in the existing technology is not reasonable enough, and there is a lack of effective dustproof structure design. As a result, when the tractor is operating in a dusty environment, external dust can easily enter the cab with the airflow, which not only pollutes the air environment in the cab, but also adheres to the instrument panel, seat and other parts, affecting the service life of the equipment and the safety of operation.

[0004] Meanwhile, the existing air conditioning vents are often arranged in a concentrated or single location, which can easily lead to blind spots or direct airflow. Some vents only supply air to the front area of ​​the cab, leaving the rear area as a blind spot where effective temperature regulation cannot be achieved. Other vents have an overly concentrated airflow direction, blowing directly at the operator or specific parts of the cab, causing localized overcooling or overheating. This unreasonable air supply method results in significant temperature differences between the front, rear, left, and right areas of the cab, making it impossible to form a uniform temperature field and failing to meet the comfort needs of operators working for extended periods. Utility Model Content

[0005] The purpose of this invention is to provide a tractor cab air conditioning outlet arrangement structure that can reduce dust entry, achieve uniform air delivery to eliminate blind spots and direct blowing phenomena, in order to address the above problems.

[0006] To achieve the above objectives, this utility model discloses a tractor cab air conditioning vent arrangement structure, including a cab frame and a roof. An air conditioner is installed inside the roof. The structural features are as follows: air inlets are provided on both the left and right sides of the roof outside the cab frame; a front windshield vent is provided on the roof inside the cab frame; multiple air duct outlets are spaced apart on the periphery of the roof behind the front windshield vent; these multiple air duct outlets are spaced apart along the side edges of the roof inside the cab frame; a strip-shaped air outlet is provided on the roof near the rear side inside the cab frame; and column air supply housings are provided on the left and right columns on the front side inside the cab frame. The air inlets are connected to the air inlets of the air conditioner; and the front windshield vent, multiple air duct outlets, strip-shaped air outlet, and column air supply housings are connected to the air outlets of the air conditioner.

[0007] With the above structure, by setting air inlets on the left and right sides of the roof outside the cab frame, the probability of external dust directly entering can be reduced. At the same time, the multi-position distribution of the front windshield air vent, multiple air duct outlets, strip air outlets, and column air supply shells can fully cover the front, rear, left, and right areas of the cab, effectively avoiding blind spots and direct blowing, reducing the temperature difference between areas, and the coordinated air supply from multiple air outlets can continuously deliver airflow into the cab, ensuring that the air pressure inside the cab is greater than the air pressure outside, preventing dust from the harsh external environment from entering through the gaps in the cab, further improving the environmental quality inside the cab and meeting the comfort requirements for long-term operation.

[0008] Preferably, the air intake is a strip-shaped opening located on the bottom wall of the roof, with the air intakes on the left and right sides of the roof positioned near the front pillars of the cab frame. By making the air intakes strip-shaped and placing them on the lower end of the roof near the front pillars, the air intake area is increased, and the pillars are used to block some dust, further reducing dust entry. The ample air intake provides a stable air source for the air conditioner, and the positive pressure inside the cab, combined with the airflow from multiple vents, effectively prevents dust from entering through gaps, maintaining a clean cab.

[0009] Preferably, the windshield vent includes two first vents spaced apart along the left-right direction of the roof. Each first vent is a strip-shaped opening along the left-right direction of the roof. The two first vents are respectively located within the cab frame near the front left and right pillars. By positioning the two first vents along the left-right direction of the roof and near the front left and right pillars, air can be directed to the windshield, quickly adjusting the temperature of the windshield area to prevent abnormal temperatures and further defogging the windshield.

[0010] Preferably, the multiple air duct outlets include two second air outlets, two third air outlets, and two fourth air outlets. The two second air outlets are respectively located at the front end of the left and right sides of the ceiling, the two third air outlets are respectively located at the middle of the left and right sides of the ceiling, and the two fourth air outlets are respectively located at the rear end of the left and right sides of the ceiling. By spaced the two second, third, and fourth air outlets at the front, middle, and rear ends of the left and right sides of the ceiling, comprehensive air supply coverage from front to back is achieved on both sides of the cab, eliminating blind spots in air supply to the sides, making the temperature on both sides more even. The continuous and uniform air supply on both sides not only regulates the temperature but also works with other air outlets to maintain positive pressure in the cab, preventing dust from entering through side gaps and improving the stability of the indoor environment.

[0011] Preferably, the strip-shaped air outlet is positioned along the left-right direction of the ceiling, between the two air duct outlets at the rear end of the ceiling. By positioning the strip-shaped air outlet between the two air duct outlets at the rear end of the ceiling, precise airflow can be delivered to the rear area of ​​the cab, overcoming the deficiency of blind spots in the rear area in existing technologies, and making the temperature in the front and rear areas of the cab more uniform.

[0012] Preferably, the column-mounted air supply housing includes a side air duct housing mounted on the front column of the cab frame. The upper part of the side air duct housing has an air guide chamber, and the outer wall of the air guide chamber has an air guide port. Through the design of the side air duct housing, air guide chamber, and air guide port of the column-mounted air supply housing, airflow can be directed to the area near the left and right front columns of the cab, supplementing the air volume in this area. This avoids localized temperature imbalances at the front, and the placement of the air guide ports reduces direct airflow to the operators. The supplementary air supply near the columns further improves the airflow distribution within the cab and enhances the air pressure in the front area.

[0013] Preferably, the side air duct housing includes a funnel-shaped air intake housing that is wider at the top and narrower at the bottom, and a connecting housing that is connected to the lower part of the air intake housing and to the cab frame column. The funnel-shaped air intake housing facilitates the concentration of airflow, and the connection housing is firmly connected to the cab frame column, ensuring stable installation of the column-mounted air supply housing and guaranteeing the continuity and stability of air supply.

[0014] Preferably, the air guide chamber is composed of an air guide shell disposed on the connecting shell and a closed partition disposed within the side air duct shell. The air guide shell is located at the upper part of the connecting shell, and its internal space is connected to the internal spaces of the collecting shell and the connecting shell. The air guide outlet is disposed on the outer wall of the air guide shell. The closed partition is closed at the upper and rear parts of the collecting shell and extends downward along the connecting shell, thereby closing the rear and lower parts of the air guide shell. The air guide shell, the side air duct shell, and the closed partition cooperate to form a closed chamber. An air guide duct connected to the air guide chamber is disposed at the upper end of the closed partition. By connecting the air guide shell with the internal spaces of the collecting and connecting shells, and forming a complete closed chamber with the closed partition, air leakage is reduced and effective utilization of air volume is ensured. The air guide duct is connected to the air guide chamber, further optimizing airflow guidance and reducing the generation of eddies, making the air delivery from the air guide outlet more precise and comfortable, and enhancing the temperature regulation effect in local areas.

[0015] A type of cab, including the aforementioned air conditioning vent arrangement structure for a tractor cab, effectively improves the driving and riding environment.

[0016] A tractor includes the aforementioned cab. The advantages of the aforementioned cab improve the driver's comfort.

[0017] In summary, the beneficial effects of this utility model are as follows: This utility model can reduce dust entry and achieve uniform air supply to eliminate blind spots and direct blowing phenomena. By setting air inlets on the left and right sides of the roof outside the cab frame, the probability of external dust directly entering can be reduced. At the same time, the multi-position distribution of the front windshield air vent, multiple air duct outlets, strip air outlets, and column air supply shells can fully cover the front, rear, left, and right areas of the cab, effectively avoiding air supply blind spots and direct blowing phenomena, reducing the temperature difference between different areas, and the coordinated air supply from multiple air outlets can continuously deliver airflow into the cab, ensuring that the air pressure inside the cab is greater than the air pressure outside, preventing dust from the harsh external environment from entering through the gaps in the cab, further improving the environmental quality inside the cab and meeting the comfort requirements of long-term operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 A schematic diagram showing the distribution of the air duct outlets on the ceiling of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the installation location of the air outlet on the ceiling of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the present invention, showing the enclosed partition installed inside the side air duct housing;

[0022] Figure 5 This is a schematic diagram of the structure of the column air supply shell of this utility model.

[0023] In the diagram: 1. Cab frame; 2. Roof; 3. Air conditioner; 4. Air inlet; 5. Front windshield vent; 6. Air duct outlet; 7. Strip-shaped air outlet; 8. Column; 9. Column air supply housing; 10. First air vent; 11. Second air vent; 12. Third air vent; 13. Fourth air vent; 14. Side air duct housing; 15. Air guide; 16. Collector housing; 17. Connecting housing; 18. Air guide housing; 19. Enclosed partition; 20. Air duct. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "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 application 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 application.

[0026] In the description of this application, it should be noted that, unless otherwise expressly 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. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0028] like Figure 1 - Figure 3As shown, this utility model includes a cab frame 1 and a roof 2. An air conditioner 3 is installed inside the roof 2. Air inlets 4 are provided on both the left and right sides of the roof 2 outside the cab frame 1. In the design, the air inlets 4 are strip-shaped openings located on the bottom wall of the roof 2. The air inlets 4 on the left and right sides of the roof 2 are positioned near the front pillars 8 of the cab frame 1. Typically, the roof 2 includes an upper shell and a lower shell. The lower shell of the roof 2 is installed at the upper end of the cab frame 1, and its length and width are greater than the length and width of the upper part of the cab frame 1. The housing is mounted on the lower housing, and an internal cavity is formed between the two. The air conditioner 3 is installed in this internal cavity. By setting the air inlet 4 as a strip opening and placing it on the lower end face of the ceiling 2 near the front pillar 8, the air intake area is increased, and the pillar 8 is used to block some dust, further reducing the entry of dust. The sufficient air intake provides a stable air source for the air conditioner 3. Combined with the positive pressure formed by the air supply from multiple air outlets, it can effectively prevent dust from entering from the gaps and maintain the cleanliness of the cab. The air conditioner 3 is usually installed in the ceiling 2 and in the upper ceiling 2 near the rear of the cab.

[0029] like Figure 1 and Figure 2 As shown, a windshield air vent 5 is provided on the roof 2, located inside the cab frame 1 and close to the windshield. In the design, the windshield air vent 5 includes two first air vents 10 spaced apart along the left and right directions of the roof 2. The first air vent 10 is a strip-shaped opening along the left and right directions of the roof 2. The two first air vents 10 are respectively located inside the cab frame 1 near the left and right front pillars 8. In this way, by the two first air vents 10 being positioned along the left and right directions of the roof 2 and close to the left and right front pillars 8, air can be directed to the windshield, quickly adjusting the temperature of the windshield area to avoid abnormal temperature in the front area, and at the same time, it can further defog the windshield.

[0030] like Figure 1 and Figure 2As shown, multiple air duct outlets 6 are spaced apart around the perimeter of the roof 2 behind the windshield air vent 5. These outlets 6 are spaced apart along the side edge of the roof 2 inside the cab frame 1. A strip-shaped air outlet 7 is provided on the roof 2 near the rear side inside the cab frame 1. In the design, a rectangular groove is provided on the bottom wall of the roof 2 inside the cab frame 1. Each side of this rectangular groove is located near the upper connecting crossbeam of the cab frame 1, and the groove depth near the rear of the cab frame 1 is... The depth of the trough is less than that of the front section, and the bottom of the trough is usually designed with a smoothly transitioning arc surface structure. The aforementioned front windshield air inlet 5 is located on the ceiling 2 on the front side of the rectangular trough. The aforementioned multiple air duct outlets 6 include two second air inlets 11, two third air inlets 12, and two fourth air inlets 13. The two second air inlets 11 are respectively located at the front corners of the left and right sides of the rectangular trough on the ceiling 2, while the two third air inlets 12 are respectively located at the middle positions of the left and right sides of the rectangular trough on the ceiling 2. The two fourth air outlets 13 mentioned above are respectively located at the rear end of the rectangular trough near the left and right sides. With the two second air outlets 11 and the third air outlet 12 located on the side wall of the trough, and the fourth air outlet 13 located on the bottom wall of the shallower part of the rectangular trough, each air outlet can blow air towards the front, back, left, and right sides of the driver's seat, thereby achieving comprehensive air supply coverage from front to back on both sides of the cab, eliminating blind spots in the air supply on both sides, making the temperature on both sides more even. The continuous and uniform air supply on both sides not only regulates the temperature, but also works with other air outlets to maintain positive pressure in the cab, preventing dust from entering from the side gaps and improving the stability of the indoor environment. Usually, the air duct outlet 6 is a circular opening structure. During manufacturing, the strip air outlet 7 is located along the left and right direction of the ceiling 2 between the two air duct outlets 6 at the rear end of the ceiling 2. By placing the strip air outlet 7 between the two air duct outlets 6 at the rear end of the ceiling 2, it can accurately supply air to the rear area of ​​the cab, making up for the defect of blind spots on the rear side in the existing technology, and making the temperature in the front and rear areas of the cab more consistent.

[0031] like Figure 1 - Figure 5As shown, each of the left and right pillars 8 on the front side of the cab frame 1 is equipped with a pillar air supply shell 9. Each pillar air supply shell 9 includes a side air duct shell 14 mounted on the front pillar 8 of the cab frame 1. The upper part of the side air duct shell 14 has a guide chamber, and an air vent 15 is located on the outer wall of the guide chamber. Through the design of the side air duct shell 14, guide chamber, and air vent 15 of the pillar air supply shell 9, airflow can be directed to the area near the left and right pillars 8 on the front side of the cab, supplementing the air volume in this area and preventing localized temperature imbalance on the front side. The placement of the air vent 15 also reduces the direct airflow to the operator. The side air duct shell 14 includes a funnel-shaped collecting section shell 16 (wider at the top and narrower at the bottom) and a connecting section shell 17 connected to the lower part of the collecting section shell 16 and to the upper pillar 8 of the cab frame 1. The funnel-shaped collecting section shell 16 facilitates airflow concentration, and the connecting section shell... The body 17 is firmly connected to the upright column 8 on the cab frame 1, ensuring the stable installation of the upright air supply housing 9 and guaranteeing the continuity and stability of the air supply. The air guide chamber is composed of an air guide housing 18 set on the connecting housing 17 and a closed partition 19 set in the side air duct housing 14. The air guide housing 18 is located at the upper part of the connecting housing 17, and the internal space of the air guide housing 18 is connected to the internal space of the collecting housing 16 and the connecting housing 17. The air guide port 15 is set on the outer side wall of the air guide housing 18. During manufacturing, the closed partition 19 is closed on the upper and rear parts of the collecting housing 16 and extends downward along the connecting housing 17, thereby closing the rear and lower parts of the air guide housing 18. In this way, the air guide housing 18, the side air duct housing 14 and the closed partition 19 can cooperate to form a closed chamber. At the same time, an air guide pipe 20 connected to the air guide chamber is also provided at the upper end of the closed partition 19. In this way, the air guide housing 18 is connected to the internal space of the collection part and the connecting part housing 17, and together with the closed partition 19, a complete closed chamber is formed, which reduces airflow leakage and ensures effective use of air volume; while the air guide duct 20 is connected to the air guide chamber, which further optimizes the airflow guidance and reduces the generation of eddies, making the air guide 15 deliver air more accurately and comfortably, and enhancing the temperature regulation effect of local areas.

[0032] like Figure 4 and Figure 5As shown, the aforementioned enclosed partition 19 includes an upper sealing plate that closes the opening of the collection housing 16. A rear sealing plate, extending downwards and with a width equal to that of the connecting housing 17, is provided on the rear end edge of the upper sealing plate. An arc-shaped guide plate, curved forward and connected to the bottom of the air guide housing 18, is provided at the lower part of the rear sealing plate. Side sealing plates, connected to the upper sealing plate and fitted to the inner wall of the collection housing 16, are provided on both the left and right sides of the upper part of the rear sealing plate. In design, the combined structure of the upper sealing plate, rear sealing plate, arc-shaped guide plate, and side sealing plates of the enclosed partition 19 fits tightly against the inner walls of the collection housing 16 and the air guide housing 18, ensuring the smoothness of the airflow channel within the housing. This facilitates the smooth downward transmission of airflow entering from the top. The arc-shaped guide plate guides the airflow smoothly along a curved path to the air guide port 15 of the air guide housing 18, reducing wind resistance at corners, eddies, and losses. The side sealing plates prevent airflow from diffusing from both sides.

[0033] like Figure 1 - Figure 3 As shown, the air inlet 4 is connected to the air inlet of the air conditioner 3. The front windshield air vent 5, multiple air duct outlets 6, strip-shaped air outlets 7, and column air supply housing 9 are connected to the air outlet of the air conditioner 3. Through the multi-position distribution of the front windshield air vent 5, multiple air duct outlets 6, strip-shaped air outlets 7, and column air supply housing 9, the front, rear, left, and right areas of the cab can be fully covered, effectively avoiding blind spots and direct airflow, and reducing temperature differences between areas. At the same time, the coordinated air supply from multiple vents can continuously deliver airflow into the cab, ensuring that the air pressure inside the cab is greater than the outside air pressure, preventing dust from the harsh external environment from entering through the gaps in the cab, further improving the environmental quality inside the cab, and meeting the comfort requirements for long-term operation.

[0034] A driver's cab, including the aforementioned air conditioning vent arrangement structure for a tractor driver's cab, can effectively improve the driving and riding environment.

[0035] A tractor, including the aforementioned cab, has the advantages of the aforementioned cab, thereby improving the driver's riding comfort.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tractor cab air conditioning vent arrangement structure, comprising a cab frame (1) and a roof (2), wherein an air conditioning unit (3) is provided inside the roof (2), characterized in that: The canopy (2) is provided with air inlets (4) on both the left and right sides of the main body outside the cab frame (1). The canopy (2) is provided with a front windshield air vent (5) inside the cab frame (1). Multiple air duct outlets (6) are provided at intervals around the canopy (2) behind the front windshield air vent (5). The multiple air duct outlets (6) are provided at intervals along the side edge of the canopy (2) inside the cab frame (1). A strip-shaped air outlet (7) is provided on the canopy (2) near the rear side inside the cab frame (1). A column air supply housing (9) is provided on both the left and right pillars (8) on the front side inside the cab frame (1). The air inlet (4) is connected to the air inlet of the air conditioner (3). The front windshield air vent (5), multiple air duct outlets (6), strip-shaped air outlet (7) and column air supply housing (9) are connected to the air outlet of the air conditioner (3).

2. The tractor cab air conditioning vent arrangement structure as described in claim 1, characterized in that: The air inlet (4) is a strip-shaped opening and is located on the bottom wall of the roof (2). The air inlets (4) on the left and right sides of the roof (2) are located near the front pillar (8) of the cab frame (1).

3. The tractor cab air conditioning vent arrangement structure as described in claim 1, characterized in that: The front windshield air vent (5) includes two first air vents (10) spaced apart along the left and right directions of the roof (2). The first air vent (10) is a strip-shaped opening arranged along the left and right directions of the roof (2). The two first air vents (10) are respectively located in the cab frame (1) near the front left and right pillars (8).

4. The tractor cab air conditioning vent arrangement structure as described in claim 1, characterized in that: The plurality of air duct outlets (6) include two second air outlets (11), two third air outlets (12) and two fourth air outlets (13). The two second air outlets (11) are respectively located at the front end of the left and right sides of the ceiling (2), the two third air outlets (12) are respectively located at the middle of the left and right sides of the ceiling (2), and the two fourth air outlets (13) are respectively located at the rear end of the left and right sides of the ceiling (2).

5. The tractor cab air conditioning vent arrangement structure as described in claim 1, characterized in that: The strip-shaped air outlet (7) is located between the two air duct outlets (6) at the rear end of the ceiling (2) along the left and right direction of the ceiling (2).

6. The air conditioning vent arrangement structure of the tractor cab as described in claim 1, characterized in that: The column air supply housing (9) includes a side air duct housing (14) installed on the front column (8) of the cab frame (1). The upper part of the side air duct housing (14) is provided with an air guide chamber, and an air guide port (15) is provided on the outer side wall of the air guide chamber.

7. The tractor cab air conditioning vent arrangement structure as described in claim 6, characterized in that: The side air duct housing (14) includes a flared air intake housing (16) that is wider at the top and narrower at the bottom, and a connecting housing (17) that is connected to the lower part of the air intake housing (16) and to the upper column (8) of the cab frame (1).

8. The tractor cab air conditioning vent arrangement structure as described in claim 7, characterized in that: The air guide chamber is composed of an air guide shell (18) installed on the connecting shell (17) and a closed partition (19) installed inside the side air duct shell (14). The air guide shell (18) is located at the upper part of the connecting shell (17). The internal space of the air guide shell (18) is connected to the internal space of the collecting shell (16) and the connecting shell (17). The air guide port (15) is located on the outer side wall of the air guide shell (18). The closed partition (19) is closed on the upper and rear parts of the collecting shell (16) and extends downward along the connecting shell (17), and then closes the rear and lower parts of the air guide shell (18). The air guide shell (18) and the side air duct shell (14) cooperate with the closed partition (19) to form a closed chamber. The upper end of the closed partition (19) is provided with an air guide pipe (20) that communicates with the air guide chamber.

9. A driver's cab, characterized in that: The tractor cab air conditioning vent arrangement structure includes any one of claims 1 to 8. The roof (2) includes an upper shell and a lower shell. The lower shell of the roof (2) is installed on the upper end of the cab frame (1). The length and width of the lower shell of the roof (2) are greater than the length and width of the upper part of the cab frame (1). The upper shell of the roof (2) is installed on the lower shell and an internal cavity is formed between the two. A rectangular groove is provided on the bottom wall of the roof (2) inside the cab frame (1). The groove depth of the rectangular groove near the rear of the cab frame (1) is less than the groove depth at the front.

10. A tractor, characterized in that: Includes the driver's cab as described in claim 9.

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