Cab and agricultural machine

Abstract

The invention discloses a cab and an agricultural machine. The cab comprises a frame assembly, a first ornament assembly, a second ornament assembly and a cover plate assembly. A driving cavity is formed in the frame assembly, the frame assembly comprises a floor and a framework assembly, and the framework assembly comprises a plurality of supporting pieces; the first trim part assembly comprises a first interior trim part wrapping the interior of the supporting part in a sealed mode, and a first cavity is formed between the outer peripheral wall of the first interior trim part and the inner peripheral wall of the supporting part. The second ornament assembly is arranged on the periphery of the frame assembly in a sealed and surrounding mode, and a second cavity is formed between the inner periphery of the second ornament assembly and the outer peripheral wall of the supporting piece. The cover plate assembly covers the top of the frame assembly, and the cover plate assembly is in sealing fit with the peripheral wall of the top end of the frame assembly. The first cavity is formed between the first interior trim part and the sheet metal part of the frame assembly, the second cavity is formed between the second trim part assembly and the supporting piece, the noise isolation performance of the supporting piece can be improved through the cavities in the two sides, and the purpose of reducing noise of the whole cab can be achieved.

Description

Technical Field

[0001] This application belongs to the technical field of agricultural machinery, and specifically relates to a cab and an agricultural machinery. Background Art

[0002] For existing traditional agricultural machinery, such as tractors, their cabs are directly sealed with the doors through special-shaped beams on the skeleton. Since the sealing surface on the special-shaped beam is a hyperboloid, it is difficult to ensure processing; moreover, there are easily gaps between the sealing strips around the door and the sealing hyperboloid of the special-shaped beam, resulting in sealing failure and poor sealing performance; in addition, during field operations, dust easily enters the cab, leading to a poor working environment in the cab, and the gaps will also cause the noise of the engine and transmission to enter the cab, seriously affecting the physical and mental health of the cab occupants. In order to reduce noise, generally, the method of configuring interior and exterior decorations in the cab is adopted. Since the interior and exterior decorations are usually plastic parts and have a certain sound-absorbing effect, however, traditional tractor cabs generally only configure interior decorations and do not configure exterior decorations, resulting in poor sound insulation, and the noise is above 85 db, and the driver will feel uncomfortable after long-term operation. Summary of the Invention

[0003] The purpose of this application is to provide a cab and an agricultural machinery to improve the sealing and noise insulation of the cab.

[0004] To achieve the above purpose, on the one hand, this application provides a cab, including:

[0005] A frame assembly, inside which a driving cavity is formed. The frame assembly includes a floor and a skeleton assembly, and the skeleton assembly includes a plurality of support members;

[0006] A first trim assembly, including a first interior trim that seals and wraps the inside of the support member. A first cavity is formed between the outer peripheral wall of the first interior trim and the inner peripheral wall of the support member;

[0007] A second trim assembly, which is hermetically arranged around the frame assembly. A second cavity is formed between the inner periphery of the second trim assembly and the outer peripheral wall of the support member;

[0008] A cover assembly, which covers the top of the frame assembly, and the cover assembly is hermetically fitted with the top peripheral wall of the frame assembly.

[0009] In some embodiments, the skeleton assembly further includes a plurality of first columns arranged at intervals. The first columns are metal parts, and the number of the first columns is two and they are arranged at intervals in the width direction at the rear. The first trim assembly further includes a second interior trim that seals and wraps the outer periphery of the first column, and the inner peripheral wall of the second trim assembly is hermetically fitted with the outer peripheral wall of the second interior trim.

[0010] In some embodiments, the first trim assembly further includes a third interior trim component sealingly wrapping an upper surface of the floor panel.

[0011] In some embodiments, the number of the support members is two and they are arranged in the front at intervals along the width direction, the support member includes a second pillar and a first sheet metal member installed on the front surface of the second pillar, the second trim assembly includes a front wind shield, a back door panel and two side door panels connected between the front wind shield and the back door panel, the front wind shield and the two side door panels are sealedly connected by a first decorative panel, the first decorative panel is arranged corresponding to the first sheet metal member, and the inner peripheral wall of the first decorative panel and the outer peripheral wall of the first sheet metal member form the second cavity.

[0012] In some embodiments, the side door panel includes a side door glass and a side door decorative frame sealed around the periphery of the side door glass. The inner side of the side door decorative frame is provided with a first sealing strip that seals with the frame assembly, and the outer side is provided with a sunken table that seals with the side door glass.

[0013] In some embodiments, the side door decorative frame is also provided with a first sealing strip, which is clamped on the circumference of the side door glass. One of the side door panels also includes a first hinge pivotally connected to the frame assembly, which can drive the sealing strip to be squeezed with the side door glass when the side door panel is closed.

[0014] In some embodiments, the back door panel includes a back door glass, the second trim assembly also includes a back door decorative frame sealed around the periphery of the back door glass, a second sealing strip is provided on the back door decorative frame, the second sealing strip is clamped around the periphery of the back door glass, and the back door panel also includes a second hinge pivotally connected to the frame assembly.

[0015] In some embodiments, at the top ends of the two first pillars and the two second pillars, any two adjacent ones are connected by a crossbeam, and a second sheet metal part is installed on the outer side wall of the crossbeam located in the front, and the cover assembly includes:

[0016] The middle cover is covered on the top of the frame assembly, and the periphery of the middle cover is sealed with the back door decorative frame, the top of the side door decorative frame, and the second sheet metal component.

[0017] In some embodiments, the cover plate assembly further includes a top cover, which is disposed on a side of the middle cover facing away from the driving cavity, and the top cover and the middle cover are sealedly connected.

[0018] A second aspect of the present application provides an agricultural machine, comprising the cab as described above.

[0019] Through the above technical solutions, the cab and the agricultural machinery provided by the embodiments of the present invention have the following beneficial effects:

[0020] Through the above technical solutions, the cab of the present application includes a frame assembly, a first trim assembly, a second trim assembly, and a cover assembly; the frame assembly includes a floor and a skeleton assembly, and the skeleton assembly includes a plurality of support members; the first trim assembly includes a first interior trim that hermetically wraps the inside of the support members. The second trim assembly of the present application can seal and enclose the perimeter of the entire frame assembly, and the cover assembly closes the top end of the frame assembly. Through the cooperation of the second trim assembly and the cover assembly, the entire frame assembly is enclosed, thereby forming a highly sealed and moisture-proof enclosed cab. Moreover, by forming a first cavity between the first interior trim and the support members of the frame assembly, and a second cavity between the second trim assembly and the support members, the double-sided cavities can improve the noise insulation performance of the sheet metal parts. Compared with the simple sheet metal part structure in the prior art, it can achieve the purpose of reducing noise in the entire cab.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiments section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings. In the drawings:

[0023] Figure 1 is a schematic exploded view of the cab of the present application;

[0024] Figure 2 is a schematic structural view of the frame assembly in the cab of the present application;

[0025] Figure 3 is a schematic structural view of the first trim assembly in the cab of the present application;

[0026] Figure 4 is a schematic structural view of the second trim assembly in the cab of the present application;

[0027] Figure 5 is a schematic structural view of the left door decorative frame in the second trim assembly of the present application;

[0028] Figure 6 is a schematic structural view of the left door in the second trim assembly of the present application;

[0029] Figure 7Schematic diagram of the structure of the right door decorative frame in the second trim assembly of the present application;

[0030] Figure 8 Schematic diagram of the structure of the right door in the second trim assembly of the present application;

[0031] Figure 9 Schematic diagram of the structure of the rear door decorative frame in the second trim assembly of the present application;

[0032] Figure 10 Schematic diagram of the structure of the rear door panel in the second trim assembly of the present application;

[0033] Figure 11 Schematic diagram of the structure of the middle cover in the cab of the present application;

[0034] Figure 12 Schematic diagram of the structure of the top cover in the cab of the present application.

[0035] Description of reference numerals

[0036] 100 Frame assembly 322 Rear door decorative frame

[0037] 11 Floor 323 Second sealant strip

[0038] 12 Support member 324 Second hinge

[0039] 121 Second upright column 325 Second sealing strip

[0040] 122 First sheet metal part 33 Side door panel

[0041] 13 First upright column 331 Side door glass

[0042] 131 Second sheet metal part 332 Side door decorative frame

[0043] 14 Cross beam 333 First sealing strip

[0044] 200 First trim assembly 334 First sealant strip

[0045] 21 First interior trim 335 First hinge

[0046] 22 Second interior trim 34 First decorative panel

[0047] 23 Third interior trim 35 Rear enclosure guard plate

[0048] 300 Second trim assembly 41 Middle cover

[0049] 31 Front windshield 411 Sealing ring

[0050] 32 Rear door panel 42 Top cover

[0051] 321 Rear door glass 421 Protrusion Detailed implementation manners

[0052] The following will describe in detail the detailed implementation manners of the present application in conjunction with the accompanying drawings. It should be understood that the detailed implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0053] The following describes a cab and an agricultural machine according to the present application with reference to the accompanying drawings.

[0054] Existing traditional tractor cabs are directly sealed with the doors through special-shaped beams on the frame. The special-shaped beams are generally bent pipe formed parts, with poor sound insulation effect, and the sealing surface is a hyperboloid, which is difficult to guarantee in processing. There are gaps between the sealing hyperboloid of the sealing strip around the door and the special-shaped beam on the frame, resulting in sealing failure and poor sealing performance. In addition, since dust is easy to enter the cab during field operations, the working environment of the cab is poor, and the gaps also cause the noise of the engine and transmission to enter the cab, seriously affecting the physical and mental health of the cab occupants.

[0055] In view of this, as Figure 1 shown, the present application provides a cab, including a frame assembly 100, a first trim assembly 200, a second trim assembly 300, and a cover assembly; a driving cavity is formed inside the frame assembly 100, and the frame assembly 100 includes a floor 11 and a skeleton assembly. Among them, the skeleton assembly is arranged on the floor 11 and can be installed in a detachable connection manner. The skeleton assembly includes a plurality of support members 12, and among them, the support members 12 are sheet metal parts; the first trim assembly 200 includes a first interior trim 21 that seals and wraps the inside of the support member 12, and a first cavity is formed between the outer peripheral wall of the first interior trim 21 and the inner peripheral wall of the support member 12; the second trim assembly 300 is hermetically disposed around the frame assembly 100, and a second cavity is formed between the inner periphery of the second trim assembly 300 and the outer peripheral wall of the support member 12; the cover assembly covers the top of the frame assembly 100, and the cover assembly is hermetically engaged with the top peripheral wall of the frame assembly 100.

[0056] The skeleton assembly in the frame assembly 100 in the cab includes a plurality of support members 12. During the operation of the agricultural machinery, the sound insulation effect of the support members 12 is very poor. Due to the working scene of the agricultural machinery, the outside is generally noisy, so the sound transmitted to the cab is also large, resulting in poor sound insulation effect of the entire cab. In order to solve this technical problem, the present application forms a first cavity between the first interior decoration 21 and the support member 12 of the frame assembly 100, and forms a second cavity between the second decorative assembly 300 and the support member 12. The double-sided cavity can improve the noise insulation performance of the support member 12. Compared with the simple support member 12 structure in the prior art, the purpose of noise reduction of the entire cab can be achieved. In addition, the present application has a second decorative assembly 300 to seal the entire frame assembly 100 around, and the cover assembly seals the top end of the frame assembly 100. The second decorative assembly 300 and the cover assembly cooperate to seal the entire frame assembly 100, thereby forming a closed cab with high sealing and dryness insulation.

[0057] Furthermore, the first interior decoration part 21 and the support part 12 can be fixed to each other by means of a threaded or clamping structure, so that the first interior decoration part 21 can completely wrap the inner circumferential wall of the support part 12 and have a certain gap. The interior of the second decorative part assembly 300 is provided with a seal to isolate the air inside and outside the cab, so as to effectively seal the entire cab and prevent dust from entering the cab. The cover assembly is located at the top of the frame assembly 100, and can be connected to the frame assembly 100 by means of a threaded connection, and the four sides of the cover assembly and the four sides of the top of the frame assembly 100 can be sealed by a structure in which a compression sealing strip cooperates, so as to prevent air from entering the cab and play a sealing role; compared with the traditional cab, the sealing performance of the cab can be significantly improved, so as to prevent external dust from entering the cab, improve the driver's working environment, and protect the driver's health.

[0058] In some embodiments, the skeleton assembly further includes a plurality of first columns 13 arranged at intervals, and the first columns 13 are metal parts, such as Figure 3 As shown, the first trim assembly 200 also includes a second interior trim 22 that is sealed and wrapped around the outer periphery of the first pillar 13 , and the inner peripheral wall of the second trim assembly 300 and the outer peripheral wall of the second interior trim 22 are sealed and matched.

[0059] like Figure 2As shown, the number of the support members 12 is two, and they are arranged at intervals in the width direction in front of the floor 11. The support members 12 are integrally molded by pressing. The number of the first columns 13 is two, and they are arranged at intervals in the width direction behind the floor 11. The two support members 12 and the two first columns 13 form the framework of the entire frame assembly 100. In addition, at the tops of the two support members 12 and the tops of the two first columns 13, any two adjacent ones are connected by a cross beam 14. Among them, a second sheet metal part 131 is provided on the front side of the cross beam 14 located in the front. The cross beam 14 is provided to achieve the stable connection of the entire framework assembly. Moreover, most of the parts of the frame assembly 100 of the present application are moldings, which can ensure the consistency of the products, and can solve the problems of difficult molding and difficult accuracy guarantee of the traditional frame assembly 100 with special-shaped cross sections.

[0060] In addition, the first column 13 of the present application is a rectangular tube, and its sound insulation effect is relatively better than that of the support member 12. After the second interior trim part 22 is hermetically wrapped around the outer periphery of the first column 13, the entire second trim assembly 300 is then wrapped around the outer periphery of the entire frame assembly 100. For the first column 13, due to the double sealing of the second interior trim part 22 and the second trim assembly 300, the noise reduction performance is also greatly improved compared with the original simple structure of the first column 13. In addition, the frame assembly 100 is formed by welding rectangular tubes, and the material forming process is simple, the processing difficulty is low, the accuracy is easy to guarantee (the prior art uses special-shaped cross-section tubes), and the cost is low. In order to improve the sealing performance of the entire frame assembly 100 itself, during processing, all welds on the entire frame assembly 100 need to be coated with sealant to ensure the sealing performance of the entire frame assembly 100.

[0061] In some embodiments, the first trim assembly 200 further includes a third interior trim part 23 that hermetically wraps the upper surface of the floor 11. Among them, the third interior trim part 23 and the floor 11 can be connected in a detachable manner. By providing the third interior trim part 23 on the floor 11, the noise transmitted from below the cab to the interior of the cab can be greatly reduced.

[0062] In some embodiments, such as Figure 4As shown in the figure, the number of the support members 12 is two, and they are arranged at intervals in the width direction at the front. The support member 12 includes a second upright column 121 and a first sheet metal part 122 mounted on the front surface of the second upright column 121. The second trim assembly 300 includes a front windshield 31, a rear door panel 32, and two side door panels 33 connected between the front windshield 31 and the rear door panel 32. The front windshield 31 and the two side door panels 33 are hermetically connected through first decorative plates 34 respectively. The two first decorative plates 34 are respectively arranged corresponding to the two first sheet metal parts 122. A second cavity is formed between the inner peripheral wall of the first decorative plate 34 and the outer peripheral wall of the first sheet metal part 122. When the second trim assembly 300 is hermetically disposed around the outer periphery of the frame assembly 100, the two first decorative plates 34 are arranged corresponding to the two first sheet metal parts 122. The front windshield 31 is used to enclose the space formed between the two first sheet metal parts 122 and the second sheet metal part 131 in front. The rear door panel 32 is used to enclose the space between the two first upright columns 13. The side door panel 33 is used to enclose the space formed between the first upright column 13 and the second upright column 121, so that all the surfaces of the entire cab in contact with the outside are sealed. Moreover, when each plate of the second trim assembly 300 is connected to the frame assembly 100, it can be connected in a variety of detachable connection ways such as snap connection and threaded connection.

[0063] In addition, a rear enclosing guard plate 35 is further extended and provided below the rear door panel 32. The various plates in the second trim assembly 300 are buckled with each other through lap joints, and seal with the left side, the rear side, the lower rear side, and the right side of the frame assembly 100 through compression sealing strips.

[0064] In some embodiments, as Figure 6 and Figure 8 shown, the side door panel 33 includes a side door glass 331 and a side door decorative frame 332 hermetically wound around the outer periphery of the side door glass 331. A first sealing strip 333 for hermetically cooperating with the frame assembly 100 is provided inside the side door decorative frame 332, and a sunken table surface for hermetically cooperating with the side door glass 331 is provided outside.

[0065] Among them, the number of the side door panels 33 is two, which are respectively a left door panel and a right door panel. The shapes of the left door panel and the right door panel respectively match the spaces formed between the first upright column 13 and the second upright column 121 on the corresponding side to enclose the corresponding side spaces. A circle of first sealing strips 333 is provided inside the side door decorative frame 332. When the left door panel and the right door panel respectively enclose the left and right sides of the frame assembly 100, the first sealing strips 333 can hermetically cooperate with the left and right side surfaces of the first upright column 13 and the second upright column 121, and at the same time hermetically cooperate with the side end surfaces of the floor 11 to realize the sealed assembly of the side door panel 33 and the frame assembly 100. In addition, a sunken table surface for installing the side door glass 331 is further provided outside the side door decorative frame 332 to install the side door glass 331 more stably.

[0066] In some embodiments, the side door trim frame 332 is further provided with a first sealing strip 334, the first sealing strip 334 is clamped on the periphery of the side door glass 331, and one of the side door panels 33 further includes a first hinge 335 pivotally connected to the frame assembly 100, which can drive the sealing strip to squeeze against the side door glass 331 when the side door panel 33 is closed.

[0067] As Figure 5 、 Figure 6 and Figure 7 shown, when the side door glass 331 needs to be installed on the side door trim frame 332, the entire first sealing strip 334 is clamped on the outer periphery of the side door glass 331. When the right door panel is fixedly installed on the frame assembly 100 by five-point threading, the threaded first sealing strip 334 is compressed to form an effective seal between the right door panel and the frame assembly 100. Since the first hinge 335 is also provided on the left door panel, the left door panel is connected to the frame assembly 100 through the first hinge 335. When the left door panel is closed, the first sealing strip 334 and the glass mating surface of the side door trim frame 332 on the left side are compressed to play a sealing role.

[0068] In some embodiments, as Figure 9 and Figure 10 shown, the back door panel 32 includes a back door glass 321, and the second trim assembly 300 further includes a back door trim frame 322 that is hermetically wound around the outer periphery of the back door glass 321. The back door trim frame 322 is provided with a second sealing strip 325, the second sealing strip 323 is clamped on the periphery of the back door glass 321, and the back door panel 32 further includes a second hinge 324 pivotally connected to the frame assembly 100. When the back door glass 321 needs to be installed on the back door trim frame 322, the second sealing strip 323 is clamped on the outer periphery of the back door glass 321. Since the second hinge 324 is also provided on the back door trim frame 322, when the back door trim frame 322 with the back door glass 321 installed is connected to the frame assembly 100 through the second hinge 324, when the entire back door panel 32 is closed, the second sealing strip 323 can be compressed to seal the back door panel 32 and the frame assembly 100.

[0069] In addition, a second sealing strip 325 is provided on the inner side of the back door trim frame 322, and the second sealing strip 325 is hermetically mated with the rear end face of the floor 11 and the rear side faces of the two first columns 13 respectively. A peripheral sealing surface that cooperates with the back door glass 321 is provided on the outer side of the back door trim frame 322. When the back door trim frame 322 is detachably connected to the frame assembly 100, when the two are fastened, the second sealing strip 325 can be compressed to achieve the sealing between the back door trim frame 322 and the rear end face of the floor 11 and the rear side faces of the two first columns 13.

[0070] In some embodiments, the cover assembly includes a middle cover 41 and a top cover 42; the middle cover 41 covers the top of the frame assembly 100, and the four sides of the middle cover 41 are sealed with the tailgate decorative frame 322, the side door decorative frame 332, and the second sheet metal component 131; the top cover 42 is arranged on the side of the middle cover 41 away from the driving cavity, and the top cover 42 and the middle cover 41 are sealed and connected.

[0071] like Figure 11 and Figure 12 As shown, a circle of protrusions 421 are provided on the lower surface of the top cover 42, and a circle of sealing rings 411 are provided on the upper surface of the middle cover 41. When the top cover 42 is covered on the middle cover 41, the protrusions 421 can be sealed with the sealing rings 411 to achieve a sealed cover between the middle cover 41 and the top cover 42. In addition, during assembly, the top cover 42 can be connected to the top surface of the frame assembly 100 through threads and pressed on the middle cover 41, and the sealing is performed by compressing the sealing rings 411 on the upper surface of the middle cover 41 to prevent air and noise from entering between the middle cover 41 and the top cover 42.

[0072] Furthermore, when the middle cover 41 is covered on the top surface of the frame assembly 100, the lower end surface of the middle cover 41 is sealed with the second sheet metal 131 through a compression sealing strip to close the first cavity and the internal cavity of the cab; the outer peripheral side surface of the middle cover 41 is sealed with the inner peripheral side walls of the back door decorative frame 322 of the left and right side door panels 33, respectively, thereby preventing air and noise from entering between the middle cover 41 and the first trim assembly 200.

[0073] In some embodiments, the first trim assembly 200 and the second trim assembly 300 are both integrally formed plastic parts. Since the first trim assembly 200 and the second trim assembly 300 are both made of plastic material, the plastic material has a certain sound absorption effect, thereby improving the sound insulation effect of the entire cab without increasing the weight of the entire cab, and greatly reducing the damage of noise to the cab occupants.

[0074] The second aspect of the present application provides an agricultural machine, comprising the cab as described above. The engineering machine may be a common agricultural machine such as a tractor or a harvester. Since the agricultural machine adopts all the embodiments of the cab as described above, it has all the beneficial effects brought by the cab as described above, which will not be described in detail here.

[0075] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0076] In this application, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0078] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A cab, characterized in that, Comprising: A frame assembly (100) with a driving cavity formed inside. The frame assembly (100) includes a floor (11) and a skeleton assembly, and the skeleton assembly includes a plurality of support members (12). A first trim assembly (200), including a first interior trim (21) that hermetically wraps the inside of the support member (12). A first cavity is formed between the outer peripheral wall of the first interior trim (21) and the inner peripheral wall of the support member (12). A second trim assembly (300), hermetically surrounding the periphery of the frame assembly (100). A second cavity is formed between the inner periphery of the second trim assembly (300) and the outer peripheral wall of the support member (12). A cover plate assembly, covering the upper part of the frame assembly (100), and the cover plate assembly is hermetically fitted with the top peripheral wall of the frame assembly (100).

2. The cab according to claim 1, characterized in that The skeleton assembly further includes a plurality of first columns (13) arranged at intervals. The number of the first columns (13) is two and they are arranged at intervals in the width direction at the rear. The first trim assembly (200) further includes a second interior trim (22) that hermetically wraps the outer periphery of the first column (13). The inner peripheral wall of the second trim assembly (300) is hermetically fitted with the outer peripheral wall of the second interior trim (22).

3. The cab according to claim 2, characterized in that, The first trim assembly (200) further includes a third interior trim (23) that hermetically wraps the upper surface of the floor (11).

4. The cab according to claim 3, characterized in that, The number of the support members (12) is two and they are arranged at intervals in the width direction at the front. The support member (12) includes a second column (121) and a first sheet metal part (122) installed on the front surface of the second column (121). The second trim assembly (300) includes a front windshield (31), a rear door panel (32), and two side door panels (33) connected between the front windshield (31) and the rear door panel (32). The front windshield (31) and the two side door panels (33) are hermetically connected by a first decorative panel (34). The first decorative panel (34) is arranged corresponding to the first sheet metal part (122). The second cavity is formed between the inner peripheral wall of the first decorative panel (34) and the outer peripheral wall of the first sheet metal part (122).

5. The cab according to claim 4, characterized in that, The side door panel (33) includes a side door glass (331) and a side door decorative frame (332) hermetically wound around the outer periphery of the side door glass (331). A first sealing strip (333) hermetically fitted with the frame assembly (100) is provided on the inner side of the side door decorative frame (332), and a sunken surface hermetically fitted with the side door glass (331) is provided on the outer side.

6. The cab according to claim 5, characterized in that, The side door decorative frame (332) is further provided with a first sealing rubber strip (334). The first sealing rubber strip (334) is clamped on the circumference of the side door glass (331). One of the side door panels (33) further includes a first hinge (335) pivotally connected to the frame assembly (100), and when the side door panel (33) is closed, it can drive the sealing rubber strip to squeeze the side door glass (331).

7. The cab according to claim 6, characterized in that, The rear door panel (32) includes a rear door glass (321). The second trim assembly (300) further includes a rear door decorative frame body (322) that is hermetically wound around the outer periphery of the rear door glass (321). A second sealing strip (325) is provided on the rear door decorative frame body (322). A second sealing rubber strip (323) is clamped around the circumference of the rear door glass (321). The rear door panel (32) further includes a second hinge (324) pivotally connected to the frame assembly (100).

8. The cab according to claim 7, characterized in that, Among the tops of the two first columns and the two second columns (121), any two adjacent ones are connected by a cross beam (14). A second sheet metal part (131) is installed on the outer side wall of the front cross beam (14). The cover assembly includes: A middle cover (41) that covers the top of the frame assembly (100). The periphery of the middle cover (41) is hermetically fitted with the top end of the rear door decorative frame body (322), the side door decorative frame body (332), and the second sheet metal part (131).

9. The cab according to claim 8, characterized in that, The cover assembly further includes a top cover (42). The top cover (42) is provided on the side of the middle cover (41) facing away from the driving cavity. The top cover (42) and the middle cover (41) are hermetically connected.

10. An agricultural machine, characterized in that, Including the cab according to any one of claims 1 to 9.

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