A cab roof, a cab, and agricultural machinery

Abstract

This utility model provides a cab roof, a cab, and agricultural machinery. A cab roof includes: an outer roof body, an inner roof body, an air duct cover, and an air conditioning evaporator. The outer roof body, the air duct cover, and the air conditioning evaporator are all installed on the inner roof body, and the air duct cover and the air conditioning evaporator are located between the outer roof body and the inner roof body. The outer and inner roof bodies form a double-layer structure, improving the sound and heat insulation performance of the roof. Installing the air conditioning evaporator and air duct cover between the inner and outer roofs allows for easy inspection and maintenance of components such as the air conditioning evaporator, electrical piping, and air ducts simply by removing the outer roof. This solves the problems of poor sound and heat insulation associated with single-layer roofs and also improves the convenience of maintenance and repair of the air conditioning evaporator and air ducts.

Description

Technical Field

[0001] This utility model relates to the field of cab technology, and in particular to a cab roof, a cab, and agricultural machinery. Background Technology

[0002] As the working environment where the operator spends a long time during operation, the harvester cab must have good sealing, sound insulation, and heat preservation properties to maintain the operator's comfort. The cab roof, as one of the most important components of the cab, undertakes multiple functions such as sealing, sound insulation, heat preservation, and load-bearing.

[0003] Currently, the roof structure of harvester cabs is mostly composed of a plastic outer roof and a sheet metal frame. The air conditioning evaporator and wiring harness are fixed on the sheet metal frame of the roof. If maintenance is required, the entire interior roof must be removed, which makes maintenance inconvenient. The plastic outer roof is a single-layer structure with poor sound and heat insulation performance.

[0004] The existing harvester cab roof structure is a single-layer plastic outer roof plus a sheet metal frame structure. The plastic outer roof is responsible for sealing, sound insulation and waterproofing, while the sheet metal frame is responsible for the installation and support of components such as evaporators and wiring harnesses. The two are combined to form the current roof assembly.

[0005] Currently, in the top cover structure of harvester cabs, the middle part of the outer top assembly is a single-layer structure with poor heat and sound insulation performance. It cannot be disassembled from the top for maintenance of the air conditioning evaporator. The interior trim must be disassembled from the bottom to repair the air conditioning evaporator, which makes maintenance inconvenient. In addition, the sheet metal frame needs to be welded and assembled with the outer top assembly, which is a complicated process and has high labor costs. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a cab roof, a cab, and agricultural machinery.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A cab roof includes: an outer roof body, an inner roof body, an air duct cover plate, and an air conditioning evaporator. The outer roof body, the air duct cover plate, and the air conditioning evaporator are all installed on the inner roof body, and the air duct cover plate and the air conditioning evaporator are all located between the outer roof body and the inner roof body.

[0008] The beneficial effects of adopting this utility model's technical solution are as follows: The double-layer structure, consisting of an outer top cover and an inner top cover, improves the sound insulation and heat insulation performance of the top cover by changing the original single-layer structure to a double-layer structure. The air conditioning evaporator and duct cover are installed between the inner and outer top covers. By simply removing the outer top cover, the air conditioning evaporator, electrical piping, and ductwork can be inspected and repaired. This solves the problems of poor sound and heat insulation in single-layer top covers and also improves the convenience of maintenance for the air conditioning evaporator and ductwork. It also addresses the issues of poor sound and heat insulation, poor maintenance convenience, and low integration in the top cover of the harvester cab.

[0009] Furthermore, the outer top cover body includes a front outer top cover and a rear outer top cover, both of which are mounted on the inner top cover body. One end of the front outer top cover is connected to one end of the rear outer top cover, and multiple sealing structures are provided at the connection position between the front outer top cover and the rear outer top cover.

[0010] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The double-layer structure, consisting of a front outer top cover, a rear outer top cover, and an inner top cover body, changes the original single-layer structure to a double-layer structure, improving the sound insulation and heat insulation performance of the top cover. Installing the air conditioning evaporator and duct cover between the inner and outer top covers solves the problems of poor sound and heat insulation associated with single-layer top covers, and also improves the convenience of maintenance and repair of the air conditioning evaporator and duct. The overlapping method between the front and rear outer top covers has multiple seals, effectively preventing water and dust from entering the top cover. The multi-layer sealing structure design enhances the overall sealing performance of the cab.

[0011] Furthermore, the multi-seal structure is a concave-convex structure, or the multi-seal structure includes: a first sealing strip installed at one end of the front outer top cover, a first water-blocking groove provided on the rear outer top cover near one end of the rear outer top cover, a sealing sponge, a second water-blocking groove provided on the rear outer top cover near one end of the rear outer top cover, and a second sealing strip installed at one end of the rear outer top cover. The first sealing strip abuts against the rear outer top cover, the second sealing strip abuts against the front outer top cover, and the sealing sponge is located between the first water-blocking groove and the second water-blocking groove. The sealing sponge abuts against both the front outer top cover and the rear outer top cover.

[0012] The beneficial effects of adopting the above-mentioned further technical solution are as follows: If there is water on the outer top cover, it is first blocked and sealed by the first sealing strip snapped onto the front outer top cover, then blocked by the first water-blocking groove, then sealed by the sealing sponge as a third layer of sealing, and finally blocked by the second sealing strip snapped onto the rear outer top cover as a fourth layer of sealing. This four-layer sealing effectively prevents water and dust from entering the top cover. The multi-layer sealing structure design improves the overall sealing performance of the cab. Through the overlapping structure of the four front and rear seals, dust and rainwater can be effectively prevented from entering during rainy or windy weather.

[0013] Furthermore, the first water-blocking channel has an inverted U-shaped cross-section, the second water-blocking channel has an L-shaped cross-section, the front outer top cover has a first groove corresponding to the position of the first water-blocking channel, and the front outer top cover has a second groove corresponding to the position of the second water-blocking channel.

[0014] The beneficial effects of adopting the above-mentioned further technical solutions are: facilitating the overlap of the front and rear outer top covers; the groove design facilitates the adaptation of the water-retaining grooves of the front and rear outer top covers, improving the sealing effect; and simplifying the structure, making the installation and maintenance of the sealing structure easier.

[0015] Furthermore, the outer top cover body is a one-piece molded structure.

[0016] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the outer top cover body is a one-piece molded structure, which improves the load-bearing strength of the outer top cover body and facilitates its installation and maintenance. The double-layer structure, consisting of the front outer top cover, rear outer top cover, and inner top cover body, changes the original single-layer structure to a double-layer structure, improving the sound insulation and heat insulation performance of the top cover. Installing the air conditioner evaporator and duct cover between the inner and outer top covers solves the problems of poor sound and heat insulation in a single-layer top cover, and also improves the convenience of maintenance and repair of the air conditioner evaporator and duct.

[0017] Furthermore, an inner top cover reinforcing rib is installed inside the rear side of the inner top cover body.

[0018] The beneficial effect of adopting the above-mentioned further technical solution is that, by strengthening the inner top cover reinforcing ribs, when repairing and maintaining the air conditioner evaporator, one can step on the rear outer top cover to remove the mounting bolts of the front outer top cover, thus meeting the need for the top cover to be stepped on.

[0019] Furthermore, an embedded nut is installed on the inner top cover body, and the air conditioner evaporator is installed on the embedded nut of the inner top cover body by bolts. The inner top cover body is provided with air ducts and electrical pipes, and the air duct cover plate is installed on the air duct of the inner top cover body by self-tapping screws. The outer top cover body is fixedly installed on the inner top cover body by a combination of interlocking structure, bolts, washers, and rubber washers.

[0020] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The double-layer structure, consisting of a front outer top cover, a rear outer top cover, and an inner top cover body, with the air conditioner evaporator bolted to the embedded nut on the inner top cover body between the inner and outer top covers, and the duct cover plate fixed to the top cover body using self-tapping screws, solves both the sound insulation and heat insulation problems of a single-layer top cover and the convenience of maintenance and repair of the air conditioner evaporator and duct. The double-layer structure, consisting of an outer top cover body and an inner top cover body, with the air conditioner evaporator and duct cover plate installed between the inner and outer top covers, allows for easy inspection and repair of the air conditioner evaporator, electrical piping, and duct components simply by removing the outer top cover, improving integration and solving both the sound insulation and heat insulation problems of a single-layer top cover and the convenience of maintenance and repair of the air conditioner evaporator and duct. This improves the convenience of maintenance and repair.

[0021] Furthermore, the plug-in structure includes a plug installed on the outer top cover body and a slot installed on the inner top cover body. The plug has an L-shaped structure, and the slot is formed by a first baffle and a second baffle installed on the inner top cover body. Both the first baffle and the second baffle have an L-shaped structure.

[0022] The beneficial effects of adopting the above-mentioned further technical solutions are: the design of the interlocking structure facilitates the stable connection between the outer top cover body and the inner top cover body, facilitates the installation and maintenance of the outer top cover body and the inner top cover body, simplifies the structure, and facilitates the processing and production of the interlocking structure.

[0023] In addition, this utility model also provides a driver's cab, including the driver's cab roof described above.

[0024] The beneficial effects of adopting this utility model's technical solution are as follows: The double-layer structure, consisting of an outer top cover and an inner top cover, improves the sound insulation and heat insulation performance of the top cover by changing the original single-layer structure to a double-layer structure. The air conditioning evaporator and duct cover are installed between the inner and outer top covers. By simply removing the outer top cover, the air conditioning evaporator, electrical piping, and ductwork can be inspected and repaired. This solves the problems of poor sound and heat insulation in single-layer top covers and also improves the convenience of maintenance for the air conditioning evaporator and ductwork. It also addresses the issues of poor sound and heat insulation, poor maintenance convenience, and low integration in the top cover of the harvester cab.

[0025] In addition, this utility model also provides an agricultural machine, including the aforementioned cab.

[0026] The beneficial effects of adopting this utility model's technical solution are as follows: The double-layer structure, consisting of an outer top cover and an inner top cover, improves the sound insulation and heat insulation performance of the top cover by changing the original single-layer structure to a double-layer structure. The air conditioning evaporator and duct cover are installed between the inner and outer top covers. By simply removing the outer top cover, the air conditioning evaporator, electrical piping, and ductwork can be inspected and repaired. This solves the problems of poor sound and heat insulation in single-layer top covers and also improves the convenience of maintenance for the air conditioning evaporator and ductwork. It also addresses the issues of poor sound and heat insulation, poor maintenance convenience, and low integration in the top cover of the harvester cab.

[0027] The advantages of this invention in its additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is one of the structural schematic diagrams of the cab roof provided in an embodiment of this utility model.

[0030] Figure 2 This is the second structural schematic diagram of the cab roof provided in an embodiment of the present utility model.

[0031] Figure 3 The third schematic diagram of the structure of the cab roof provided in this embodiment of the utility model.

[0032] Figure 4 The fourth schematic diagram of the cab roof provided for an embodiment of this utility model.

[0033] Explanation of reference numerals: 1. Front outer top cover; 2. Rear outer top cover; 3. Inner top cover body; 4. Air duct cover plate; 5. Air conditioner evaporator; 6. Inner top cover reinforcing rib; 7. Combination of bolts, washers, and rubber gaskets; 8. Self-tapping screws; 9. Bolts; 10. First sealing strip; 11. Sealing sponge; 12. First water-retaining groove; 13. Second water-retaining groove; 14. Second sealing strip; 15. Interlocking structure. Detailed Implementation

[0034] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0039] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] like Figures 1 to 4 As shown, this utility model embodiment provides a cab roof, including: an outer roof body, an inner roof body 3, an air duct cover 4, and an air conditioning evaporator 5. The outer roof body, the air duct cover 4, and the air conditioning evaporator 5 are all installed on the inner roof body 3, and the air duct cover 4 and the air conditioning evaporator 5 are located between the outer roof body and the inner roof body 3.

[0041] The beneficial effects of adopting this utility model's technical solution are as follows: The double-layer structure, consisting of an outer top cover and an inner top cover, improves the sound insulation and heat insulation performance of the top cover by changing the original single-layer structure to a double-layer structure. The air conditioning evaporator and duct cover are installed between the inner and outer top covers. By simply removing the outer top cover, the air conditioning evaporator, electrical piping, and ductwork can be inspected and repaired. This solves the problems of poor sound and heat insulation in single-layer top covers and also improves the convenience of maintenance for the air conditioning evaporator and ductwork. It also addresses the issues of poor sound and heat insulation, poor maintenance convenience, and low integration in the top cover of the harvester cab.

[0042] The outer top cover and the inner top cover can be made of metal or plastic.

[0043] like Figures 1 to 4 As shown, the outer top cover body further includes: a front outer top cover 1 and a rear outer top cover 2. The front outer top cover 1 and the rear outer top cover 2 are both installed on the inner top cover body 3. One end of the front outer top cover 1 is connected to one end of the rear outer top cover 2. Multiple sealing structures are provided at the connection position between the front outer top cover 1 and the rear outer top cover 2.

[0044] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The double-layer structure, consisting of a front outer top cover, a rear outer top cover, and an inner top cover body, changes the original single-layer structure to a double-layer structure, improving the sound insulation and heat insulation performance of the top cover. Installing the air conditioning evaporator and duct cover between the inner and outer top covers solves the problems of poor sound and heat insulation associated with single-layer top covers, and also improves the convenience of maintenance and repair of the air conditioning evaporator and duct. The overlapping method between the front and rear outer top covers has multiple seals, effectively preventing water and dust from entering the top cover. The multi-layer sealing structure design enhances the overall sealing performance of the cab.

[0045] The connection between the front outer top cover 1 and the rear outer top cover 2 is bent.

[0046] like Figures 1 to 4 As shown, further, the multi-seal structure is a concave-convex structure, or the multi-seal structure includes: a first sealing strip 10 installed at one end of the front outer top cover 1, a first water-blocking groove 12 provided on the rear outer top cover 2 near one end of the rear outer top cover, a sealing sponge 11, a second water-blocking groove 13 provided on the rear outer top cover 2 near one end of the rear outer top cover 2, and a second sealing strip 14 installed at one end of the rear outer top cover 2. The first sealing strip 10 abuts against the rear outer top cover 2, the second sealing strip 14 abuts against the front outer top cover 1, and the sealing sponge 11 is located between the first water-blocking groove 12 and the second water-blocking groove 13. The sealing sponge 11 abuts against the front outer top cover 1 and the rear outer top cover 2 respectively.

[0047] The beneficial effects of adopting the above-mentioned further technical solution are as follows: If there is water on the outer top cover, it is first blocked and sealed by the first sealing strip snapped onto the front outer top cover, then blocked by the first water-blocking groove, then sealed by the sealing sponge as a third layer of sealing, and finally blocked by the second sealing strip snapped onto the rear outer top cover as a fourth layer of sealing. This four-layer sealing effectively prevents water and dust from entering the top cover. The multi-layer sealing structure design improves the overall sealing performance of the cab. Through the overlapping structure of the four front and rear seals, dust and rainwater can be effectively prevented from entering during rainy or windy weather.

[0048] Both the first sealing strip 10 and the second sealing strip 14 are provided with slots.

[0049] like Figure 3 As shown, the front outer top cover 1 and the rear outer top cover 2 are fixed to the inner top cover body 3 by bolts, and the overlap position between the front outer top cover 1 and the rear outer top cover 2 is in the middle of the entire top cover.

[0050] like Figure 4 As shown, the overlapping sealing structure between the front outer top cover 1 and the rear outer top cover 2 is mainly divided into 7 parts and four sealing structures. If there is water on the outer top cover, it is first blocked and sealed by the first sealing strip 10 that is clipped on the front outer top cover 1, then blocked by the first water-blocking groove 12, then sealed by the sealing sponge 11, and finally sealed by the second sealing strip 14 that is clipped on the rear outer top cover 2. The four seals can effectively prevent water and dust from entering the inside of the top cover.

[0051] As an alternative to the aforementioned multi-seal structure, a concave-convex structure is formed in the middle part between the rear outer top cover 2 and the front outer top cover 1.

[0052] like Figures 1 to 4 As shown, the first water-blocking groove 12 has an inverted U-shaped cross-section, the second water-blocking groove 13 has an L-shaped cross-section, the front outer top cover 1 has a first groove corresponding to the position of the first water-blocking groove 12, and the front outer top cover 1 has a second groove corresponding to the position of the second water-blocking groove 13.

[0053] The beneficial effects of adopting the above-mentioned further technical solutions are: facilitating the overlap of the front and rear outer top covers; the groove design facilitates the adaptation of the water-retaining grooves of the front and rear outer top covers, improving the sealing effect; and simplifying the structure, making the installation and maintenance of the sealing structure easier.

[0054] Furthermore, the outer top cover body is a one-piece molded structure.

[0055] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the outer top cover body is a one-piece molded structure, which improves the load-bearing strength of the outer top cover body and facilitates its installation and maintenance. The double-layer structure, consisting of the front outer top cover, rear outer top cover, and inner top cover body, changes the original single-layer structure to a double-layer structure, improving the sound insulation and heat insulation performance of the top cover. Installing the air conditioner evaporator and duct cover between the inner and outer top covers solves the problems of poor sound and heat insulation in a single-layer top cover, and also improves the convenience of maintenance and repair of the air conditioner evaporator and duct.

[0056] like Figures 1 to 4 As shown, further, an inner top cover reinforcing rib 6 is installed inside the rear side of the inner top cover body 3.

[0057] The beneficial effect of adopting the above-mentioned further technical solution is that, by strengthening the inner top cover reinforcing ribs, when repairing and maintaining the air conditioner evaporator, one can step on the rear outer top cover to remove the mounting bolts of the front outer top cover, thus meeting the need for the top cover to be stepped on.

[0058] Among them, the inner top cover reinforcing rib 6 can be multiple ribs protruding from the inner top cover body 3.

[0059] like Figures 1 to 4 As shown, further, an embedded nut is installed on the inner top cover body 3, and the air conditioner evaporator 5 is installed on the embedded nut of the inner top cover body 3 by bolts 9. The inner top cover body 3 is provided with air ducts and electrical pipes, and the air duct cover plate 4 is installed on the air duct of the inner top cover body 3 by self-tapping screws 8. The outer top cover body is fixedly installed on the inner top cover body 3 by interlocking structure 15 and bolt, washer, and rubber gasket combination 7.

[0060] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The double-layer structure, consisting of a front outer top cover, a rear outer top cover, and an inner top cover body, with the air conditioner evaporator bolted to the embedded nut on the inner top cover body between the inner and outer top covers, and the duct cover plate fixed to the top cover body using self-tapping screws, solves both the sound insulation and heat insulation problems of a single-layer top cover and the convenience of maintenance and repair of the air conditioner evaporator and duct. The double-layer structure, consisting of an outer top cover body and an inner top cover body, with the air conditioner evaporator and duct cover plate installed between the inner and outer top covers, allows for easy inspection and repair of the air conditioner evaporator, electrical piping, and duct components simply by removing the outer top cover, improving integration and solving both the sound insulation and heat insulation problems of a single-layer top cover and the convenience of maintenance and repair of the air conditioner evaporator and duct. This improves the convenience of maintenance and repair.

[0061] like Figures 1 to 4As shown, the interlocking structure 15 further includes a plug installed on the outer top cover body and a slot installed on the inner top cover body 3. The plug is an L-shaped structure, and the slot is formed by a first baffle and a second baffle installed on the inner top cover body 3. Both the first baffle and the second baffle are L-shaped structures.

[0062] The beneficial effects of adopting the above-mentioned further technical solutions are: the design of the interlocking structure facilitates the stable connection between the outer top cover body and the inner top cover body, facilitates the installation and maintenance of the outer top cover body and the inner top cover body, simplifies the structure, and facilitates the processing and production of the interlocking structure.

[0063] like Figure 1 As shown, the cab roof provided in this embodiment of the utility model can be a roof structure, mainly composed of a front outer roof 1, a rear outer roof 2, and an inner roof body 3, forming a double-layer structure. Between the inner and outer roofs, the air conditioning evaporator 5 is assembled to the embedded nut of the inner roof body 3 by bolts 9, and the air duct cover 4 is fixed to the roof body 3 by self-tapping screws 8. This solves the problems of poor sound and heat insulation of a single-layer roof and also improves the convenience of maintenance and repair of the air conditioning evaporator and air duct. With the reinforcement of the inner roof reinforcing rib 6, when repairing and maintaining the air conditioning evaporator 5, one can step on the rear outer roof 2 to remove the mounting bolts of the front outer roof 1, thus meeting the requirement that the roof can be stepped on.

[0064] like Figure 2 As shown, the outer top cover (outer top cover body) and the inner top cover (inner top cover body 3) are first installed through the interlocking structure 15, and then the front outer top cover 1 and the rear outer top cover 2 are fixed to the inner top cover body 3 by bolts, washers and rubber gaskets combination 7.

[0065] The design features of the roof structure improve the overall NVH (Noise, Vibration, Harshness) of the cab and enhance the ease of evaporator maintenance.

[0066] 1. With the assembly of the inner top cover body, the outer front top cover (front outer top cover 1), and the outer rear top cover (rear outer top cover 2), the air conditioner evaporator, electrical pipes, air ducts and other components can be inspected and repaired simply by removing the outer top cover, which greatly improves the convenience of maintenance.

[0067] 2. The combination of the inner and outer top covers has been changed from a single-layer structure to a double-layer structure, which greatly improves the sound insulation and heat insulation performance of the top cover.

[0068] 3. High integration of the top cover: It integrates the installation of components such as air ducts, air conditioning evaporators, and electrical pipes.

[0069] In addition, this utility model also provides a driver's cab, including the driver's cab roof described above.

[0070] The beneficial effects of adopting this utility model's technical solution are as follows: The double-layer structure, consisting of an outer top cover and an inner top cover, improves the sound insulation and heat insulation performance of the top cover by changing the original single-layer structure to a double-layer structure. The air conditioning evaporator and duct cover are installed between the inner and outer top covers. By simply removing the outer top cover, the air conditioning evaporator, electrical piping, and ductwork can be inspected and repaired. This solves the problems of poor sound and heat insulation in single-layer top covers and also improves the convenience of maintenance for the air conditioning evaporator and ductwork. It also addresses the issues of poor sound and heat insulation, poor maintenance convenience, and low integration in the top cover of the harvester cab.

[0071] The cab roof provided in this embodiment of the utility model is mainly composed of three parts: a front outer roof 1, a rear outer roof 2, and an inner roof assembly (inner roof body 3), which are assembled on the cab by bolts.

[0072] In addition, this utility model also provides an agricultural machine, including the aforementioned cab.

[0073] The beneficial effects of adopting this utility model's technical solution are as follows: The double-layer structure, consisting of an outer top cover and an inner top cover, improves the sound insulation and heat insulation performance of the top cover by changing the original single-layer structure to a double-layer structure. The air conditioning evaporator and duct cover are installed between the inner and outer top covers. By simply removing the outer top cover, the air conditioning evaporator, electrical piping, and ductwork can be inspected and repaired. This solves the problems of poor sound and heat insulation in single-layer top covers and also improves the convenience of maintenance for the air conditioning evaporator and ductwork. It also addresses the issues of poor sound and heat insulation, poor maintenance convenience, and low integration in the top cover of the harvester cab.

[0074] Finally, it should be noted that 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 cab roof, characterized in that, include: The system includes an outer top cover body, an inner top cover body, a duct cover plate, and an air conditioning evaporator. The outer top cover body, the duct cover plate, and the air conditioning evaporator are all installed on the inner top cover body, and the duct cover plate and the air conditioning evaporator are located between the outer top cover body and the inner top cover body.

2. A cab roof according to claim 1, characterized in that, The outer top cover body includes a front outer top cover and a rear outer top cover. The front outer top cover and the rear outer top cover are both installed on the inner top cover body. One end of the front outer top cover is connected to one end of the rear outer top cover. Multiple sealing structures are provided at the connection position between the front outer top cover and the rear outer top cover.

3. A cab roof according to claim 2, characterized in that, The multi-seal structure is a concave-convex structure, or the multi-seal structure includes: a first sealing strip installed at one end of the front outer top cover, a first water-blocking groove provided on the rear outer top cover near one end of the rear outer top cover, a sealing sponge, a second water-blocking groove provided on the rear outer top cover near one end of the rear outer top cover, and a second sealing strip installed at one end of the rear outer top cover. The first sealing strip abuts against the rear outer top cover, the second sealing strip abuts against the front outer top cover, and the sealing sponge is located between the first water-blocking groove and the second water-blocking groove. The sealing sponge abuts against both the front outer top cover and the rear outer top cover.

4. A cab roof according to claim 3, characterized in that, The first water-blocking channel has an inverted U-shaped cross-section, the second water-blocking channel has an L-shaped cross-section, the front outer top cover has a first groove corresponding to the position of the first water-blocking channel, and the front outer top cover has a second groove corresponding to the position of the second water-blocking channel.

5. A cab roof according to claim 1, characterized in that, The outer top cover body is a one-piece molded structure.

6. A cab roof according to claim 1, characterized in that, The inner top cover body is equipped with an inner top cover reinforcing rib on its rear side.

7. A cab roof according to claim 1, characterized in that, An embedded nut is installed on the inner top cover body. The air conditioner evaporator is installed on the embedded nut of the inner top cover body by bolts. The inner top cover body is provided with air ducts and electrical pipes. The air duct cover plate is installed on the air duct of the inner top cover body by self-tapping screws. The outer top cover body is fixedly installed on the inner top cover body by a combination of interlocking structure, bolts, washers, and rubber washers.

8. A cab roof according to claim 7, characterized in that, The interlocking structure includes a plug installed on the outer top cover body and a slot installed on the inner top cover body. The plug is L-shaped, and the slot is formed by a first baffle and a second baffle installed on the inner top cover body. Both the first baffle and the second baffle are L-shaped.

9. A driver's cab, characterized in that, The cab roof includes any one of claims 1 to 8.

10. An agricultural machine, characterized in that, The cab includes the one described in claim 9 above.

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