Cab and harvester

Abstract

The utility model provides a cab and a harvester, and relates to the technical field of agricultural machinery. According to the cab provided by the invention, aiming at the body in white of the cab, the first net-shaped structure is arranged on the floor of the body in white to reinforce the floor, and the second net-shaped structure is arranged on the rear wall of the body in white to reinforce the rear wall, so that the rigidity of the floor and the rear wall is effectively improved, and the deformation generated by the floor and the rear wall when the cab bears external force is small. Substantially, according to the cab provided by the invention, the first-order modal frequency of the cab is improved by arranging the first net-shaped structure and the second net-shaped structure, so that when the cab is applied to a main engine of a harvester and the like, resonance of the cab is not easily caused by excitation of the main engine; thus, noise generated from the cab itself is limited.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery, and in particular to a cab and a harvester. Background Art

[0002] The noise in the harvester cab is one of the main factors affecting the driver's comfort. Being in a noisy environment for a long time will greatly affect people's physical and mental health. As harvesting machinery develops towards high power, large feed volume, and lightweight, problems such as noise and vibration have become more prominent, and grain combine harvester drivers have higher requirements for the quietness and comfort of the harvester cab.

[0003] At present, most OEMs use physical isolation to isolate the cab noise, such as covering the top with interior panels and sound-absorbing cotton, covering the rear wall with interior panels, and adding suspension shock absorbers to the cab floor to improve the cab's sound absorption and sound insulation performance. However, this noise isolation solution still has certain limitations and there is room for improvement. Utility Model Content

[0004] In view of this, the present application provides a cab and a harvester, the purpose of which is to solve the above technical problems to a certain extent.

[0005] In a first aspect, the present application provides a cab, the cab comprising a body-in-white, the body-in-white comprising a floor, a rear wall, an upper cross beam of a door, a left side welded joint, and a right side welded joint, the floor, the rear wall, the upper cross beam of the door, the left side welded joint, and the right side welded joint are jointly enclosed to form the body-in-white;

[0006] Wherein, the floor comprises a board body and a plurality of first tubular reinforcement parts arranged on the surface of the board body, and the plurality of first tubular reinforcement parts are interwoven on the surface of the board body to form a first mesh structure;

[0007] Wherein, the rear wall includes a wall body and a plurality of second tubular reinforcement parts arranged on the surface of the wall body, and the plurality of second tubular reinforcement parts are interwoven on the surface of the wall body to form a second mesh structure.

[0008] Preferably, the first tubular reinforcement portion is a first rectangular tubular reinforcement portion, and the second tubular reinforcement portion is a second rectangular tubular reinforcement portion;

[0009] Wherein, both the first rectangular tubular reinforcement portion and the second rectangular tubular reinforcement portion have a rectangular cross-section.

[0010] Preferably, the cab further includes reinforcing plates. There are reinforcing plates connected between the upper cross member of the door and the welded joint of the left side enclosure, and between the upper cross member of the door and the welded joint of the right side enclosure. Diagonal reinforcing plates are also provided on the welded joints of the left side enclosure and the right side enclosure.

[0011] Preferably, a plurality of hollow regions are defined by the second mesh structure;

[0012] Among them, the cab further includes a plurality of composite layer sound insulation pads corresponding to the plurality of hollow regions one by one, and the composite layer sound insulation pads are filled in the corresponding hollow regions.

[0013] Preferably, the composite layer sound insulation pad includes a first sound absorption layer, a sound insulation layer, and a second sound absorption layer arranged in sequence. Both the first sound absorption layer and the second sound absorption layer are sound absorption structures, and the sound insulation layer is a sound insulation structure;

[0014] The cab further includes a rear wall interior panel, and the rear wall interior panel covers the outside of the plurality of composite layer sound insulation pads. The rear wall interior panel is a sound insulation structure.

[0015] Preferably, the cab further includes a sealant layer, and the sealant layer is coated at the weld seams where the white body is formed by welding together the floor, the rear wall, the upper cross member of the door, the welded joint of the left side enclosure, and the welded joint of the right side enclosure;

[0016] The cab further includes a roof assembly. The roof assembly includes a plurality of injection molded parts spliced together. The roof assembly further includes a first sealing sponge rubber strip located between two connected injection molded parts. The roof assembly is connected to the upper side of the white body. The cab further includes a second sealing sponge rubber strip provided between the roof assembly and the top of the white body;

[0017] The flexible shaft through holes of the floor and the rear wall are sealed by sealed threaded sleeves. The wire harness through holes on the rear wall and the floor are sealed by tapered through coils. The rectangular hole on the floor for the brake pedal to pass through is sealed by a sealed pressing plate. The sealed pressing plate includes a pressing plate and a sponge layer. The sponge layer is used to fill the rectangular hole, and the pressing plate is arranged above the sponge layer. The pressing plate and the sponge layer are connected by bolts.

[0018] Preferably, the cab further includes a left door glass provided on the welded joint of the left side enclosure and a right door glass provided on the welded joint of the right side enclosure. The cab further includes door locks corresponding to the left door glass and the right door glass;

[0019] Among them, the door glass is provided with a press angle pre - deviation in the regions above and below the door lock;

[0020] Among them, the driving cab also includes a left door glass hinge corresponding to the left door glass, a right door glass hinge corresponding to the right door glass, a left car lock welded on the left side enclosure, and a right car lock welded on the right side enclosure. Sealing strips are provided at the left car lock and the left door glass hinge, and at the right car lock and the right door glass hinge. The sealing strips have a compression amount of 1 / 3 to 1 / 2.

[0021] Preferably, the first-order modal frequency of the floor is configured to be 75.8 Hz, and the first-order modal frequency of the rear wall is configured to be 25.8 Hz.

[0022] In a second aspect, the present application provides a harvester, comprising the cab as described above.

[0023] Preferably, the harvester also includes a suspension structure, which is arranged below the cab, supports the cab, and is a rubber shock absorber. The overall frequency of the suspension structure and the cab is not within the natural frequency range of the harvester excitation.

[0024] According to the cab provided by the present application, for the body-in-white of the cab, a first mesh structure is provided on the floor of the body-in-white to strengthen the floor, and a second mesh structure is provided on the rear wall of the body-in-white to strengthen the rear wall, effectively increasing the stiffness of the floor and the rear wall, so that the deformation of the floor and the rear wall when the cab is subjected to external force is reduced. In essence, according to the cab provided by the present application, the first mesh structure and the second mesh structure are provided to increase the first-order modal frequency of the cab, so that when the cab is used in a host machine such as a harvester, it is not easy to cause resonance in the cab due to the excitation of the host machine, thereby limiting the noise generated from the cab itself.

[0025] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram showing a three-dimensional diagram of the overall structure of a cab provided according to an embodiment of the present application;

[0028] Figure 2A schematic diagram showing an exploded view of the overall cab structure provided according to an embodiment of the present application;

[0029] Figure 3 A schematic diagram showing an exploded view of the top cover assembly of the cab provided according to an embodiment of the present application;

[0030] Figure 4 A schematic diagram showing a three - dimensional view of the door structure of the cab provided according to an embodiment of the present application;

[0031] Figure 5 Shows Figure 4 A schematic diagram of some structures in

[0032] Figure 6 A schematic diagram showing a three - dimensional view of the door glass of the cab provided according to an embodiment of the present application;

[0033] Figure 7 A schematic diagram showing the sealing structure of the wire - passing hole of the cab provided according to an embodiment of the present application.

[0034] Reference numerals:

[0035] 1 - top cover assembly; 2 - door glass; 3 - side - wall welding; 4 - flexible - shaft wire - passing hole; 5 - rear - floor sound - absorbing cotton; 6 - rear interior trim panel; 7 - floor mat; 8 - floor; 9 - rear wall; 10 - top - interior sound - absorbing cotton; 11 - top - interior trim panel; 12 - composite - layer sound - insulation pad; 13 - second tubular reinforcing part; 14 - diagonal - support housing; 15 - rear floor; 16 - rubber - plastic cotton; 17 - floor sound - absorbing cotton; 18 - first tubular reinforcing part; 19 - floor damping pad; 20 - triangular reinforcing plate; 21 - diagonal reinforcing plate; 22 - upper door cross - member; 23 - sealing screw sleeve; 24 - tapered wire - passing coil; 25 - sealing pressure plate; 201 - outer top cover; 202 - first sealing rubber strip; 203 - rear top - cover injection - molded part; 204 - left top - cover injection - molded part; 205 - second sealing rubber strip; 206 - third sealing rubber strip; 207 - front top - cover injection - molded part; 208 - right top - cover injection - molded part; 209 - sound - insulating cotton; 301 - sealing rubber strip; 302 - door hinge; 303 - door lock; 304 - corner pre - bias. Detailed implementation manners

[0036] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0037] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0039] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0040] According to the first aspect of the embodiments of the present application, a cab is provided. The structure and working principle of the cab will be specifically described below Figures 1 to 7 Specifically describe the structure and working principle of the cab.

[0041] According to the cab provided by the embodiments of the present application, the cab includes a body-in-white. The body-in-white includes a floor 8, a rear wall 9, an upper door beam 22, a left side panel weldment 3, and a right side panel weldment 3. The floor 8, the rear wall 9, the upper door beam 22, the left side panel weldment 3, and the right side panel weldment 3 jointly enclose to form the body-in-white. In the embodiment, the floor 8 includes a plate body and a plurality of first tubular reinforcing parts 18 arranged on the surface of the plate body. The plurality of first tubular reinforcing parts 18 are intertwined on the surface of the plate body to form a first mesh structure. In the embodiment, the rear wall 9 includes a wall body and a plurality of second tubular reinforcing parts 13 arranged on the surface of the wall body. The plurality of second tubular reinforcing parts 13 are intertwined on the surface of the wall body to form a second mesh structure.

[0042] Thus, for the cab provided by the embodiments of the present application, for the white body of the cab, a first mesh structure is provided on the floor 8 of the white body to strengthen the floor 8, and a second mesh structure is provided on the rear wall 9 of the white body to strengthen the rear wall 9, effectively improving the stiffness of the floor 8 and the rear wall 9, so that when the floor 8 and the rear wall 9 bear external forces in the cab, the resulting deformation is smaller. Substantially, for the cab provided by the embodiments of the present application, the first mesh structure and the second mesh structure are provided to increase the first-order modal frequency of the cab, so that when the cab is applied to a host machine such as a harvester, it is not easy to cause resonance of the cab due to the excitation of the host machine, thereby limiting the noise generated from the cab itself.

[0043] In the embodiment, whether it is the first tubular structure or the second tubular structure, because both have the characteristics of the tubular structure, they both have a hollow structure inside. In the embodiment, whether it is the first tubular structure or the second tubular structure, they both have a lighter weight due to the hollow structure, and also have relatively greater stiffness due to the hollow structure.

[0044] For the cab provided by the embodiments of the present application, the first tubular reinforcing part 18 can be a first rectangular tubular reinforcing part, and the second tubular reinforcing part 13 can be a second rectangular tubular reinforcing part. In the embodiment, both the first rectangular tubular reinforcing part and the second rectangular tubular reinforcing part have a rectangular cross-section. In addition, both the first tubular reinforcing part 18 and the second tubular reinforcing part 13 are in the shape of a cuboid, and thus can provide planes for connecting to the floor 8 and the rear wall 9 respectively, facilitating connecting the first tubular rod part and the second tubular reinforcing part 13 to the floor 8 and the rear wall 9, such as the upper side of the floor 8 and the inner side of the rear wall 9, for example, by welding.

[0045] In the embodiment, by way of example, the first tubular reinforcing part 18 and the second tubular reinforcing part 13 can be formed as rectangular tubes. In addition, a plurality of first tubular reinforcing parts 18 and a plurality of second tubular reinforcing parts 13 are respectively intertwined to form the first mesh structure and the second mesh structure, which is beneficial to establishing the connection relationship between the plurality of first tubular reinforcing parts 18 to improve the stiffness brought by the plurality of first tubular reinforcing parts 18. Similarly, the same is true for the plurality of second tubular reinforcing parts 13 and the second mesh structure, which will not be elaborated here.

[0046] In an embodiment, the first mesh structure and the second mesh structure may have the same distribution pattern. Taking the first mesh structure as an example, the first mesh structure may be formed by, for example, a part of the first tubular reinforcing portion 18 extending horizontally and a part of the first tubular reinforcing portion 18 extending vertically and perpendicular to the horizontally extending first tubular reinforcing portion 18, intersecting with each other. In an embodiment, at the intersection position of the two first tubular reinforcing portions 18, one of the first tubular reinforcing portions 18, for example, the horizontally extending first tubular reinforcing portion 18, may separate the vertically extending first tubular reinforcing portion 18 into two parts located on both sides of the horizontally extending first tubular reinforcing portion 18.

[0047] According to the cab provided by the embodiment of the present application, the cab may further include reinforcing plates. A reinforcing plate may be connected between the upper door cross member 22 and the left side welded joint 3, and a reinforcing plate may be connected between the upper door cross member 22 and the right side welded joint 3. Diagonal reinforcing plates 21 are further provided on the left side welded joint 3 and the right side welded joint 3. Thus, according to the cab provided by the embodiment of the present application, by connecting the upper door cross members 22 on the left and right sides to the corresponding side welded joints 3 through the reinforcing plates, the stiffness of the white body of the cab is further improved, and thus the first-order modal frequency of the white body can be further increased. In an embodiment, as an example, the reinforcing plate may be formed as a triangular reinforcing plate. The diagonal reinforcing plates 21 can improve the stiffness of the left side welded joint 3 and the right side welded joint 3 themselves, and also improve the stiffness of the white body of the cab, so that the first-order modal frequency of the white body can be further increased.

[0048] According to the cab provided by the embodiment of the present application, a plurality of hollow areas are defined by the second mesh structure. Taking the above example, the hollow areas here may be, for example, rectangular in shape. In an embodiment, the cab may further include a plurality of composite layer sound insulation pads corresponding to the plurality of hollow areas one by one, and the composite layer sound insulation pads may be filled in the corresponding hollow areas. Thus, by providing the composite layer sound insulation pads, the sound insulation performance of the cab is improved. At the same time, by arranging the composite layer sound insulation pads in the hollow areas, the space defined by the second mesh structure is effectively utilized, making the cab more compact in structure. As an example, in an embodiment, each composite layer sound insulation pad may have the same area as the corresponding hollow area.

[0049] According to the cab provided by the embodiment of the present application, the composite layer sound insulation pad includes a first sound absorption layer, a sound insulation layer, and a second sound absorption layer arranged in sequence. Both the first sound absorption layer and the second sound absorption layer are sound absorption structures, and the sound insulation layer is a sound insulation structure. In an embodiment, both the first sound absorption layer and the second sound absorption layer may be used to absorb noise, for example, and the sound insulation structure may be used to isolate noise.

[0050] According to the cab provided by the present application, the cab may further include a rear interior panel 6, and the rear interior panel 6 covers the outside of the plurality of composite layer sound insulation pads. The rear interior panel 6 is a sound insulation structure.

[0051] According to the cab provided in the embodiment of the present application, the cab may further include a sealant layer, which is coated on the weld seam formed by welding the floor 8, the rear wall 9, the upper cross beam 22 of the door, the left side surrounding weld 3 and the right side surrounding weld 3 to form the body-in-white. Thus, the sealant layer is used to improve the sealing performance of the body-in-white of the vehicle.

[0052] The cab may further include a roof assembly 1, which may include a plurality of injection molded parts spliced ​​together, and a first sealing sponge rubber strip located between two connected injection molded parts. The roof assembly 1 is connected to the upper side of the body-in-white, and the cab further includes a second sealing sponge rubber strip disposed between the roof assembly 1 and the top of the body-in-white, thereby improving the sealing performance between the roof assembly 1 and the body-in-white.

[0053] According to the cab provided by the embodiment of the present application, the cab may further include a left door glass 2 arranged at the left side surrounding weld 3 and a right door glass 2 arranged at the right side surrounding weld 3, and the cab may further include a door lock arranged corresponding to the left door glass 2 and the right door glass 2. In the embodiment, the door glass is provided with a pressure angle pre-bias in the area at the upper and lower ends of the door lock. In the embodiment, the cab may further include a left door glass 2 hinge arranged corresponding to the left door glass 2, a right door glass 2 hinge arranged corresponding to the right door glass 2, a left car lock arranged at the left side surrounding weld 3, and a right car lock arranged at the right side surrounding weld 3, and a sealing strip is arranged at the hinge between the left car lock and the left door glass 2 and at the hinge between the right car lock and the right door glass 2, and the sealing strip has a compression amount of 1 / 3 to 1 / 2 to ensure that the sealing performance of the sealing strip is effective.

[0054] In the embodiment, the high modal body-in-white structure of the cab is composed of a thickened and reinforced floor 8, a thickened and reinforced rear wall 9, a door upper cross beam 22, and left and right side surround welds 3. A rectangular tube reinforcement rib (i.e., the first tubular reinforcement portion 18) is provided below the reinforced and thickened floor 8 weld. Through the above measures, the first-order modal frequency of the floor 8 of the cab is increased to 75.8 Hz relative to the existing mass-produced models. A rectangular tube reinforcement rib (i.e., the second tubular reinforcement portion 13) is provided on the inner surface of the thickened and reinforced rear wall 9 weld, and a triangular reinforcement plate 20 is added between the rear wall 9 and the side surround weld 3. Through the above measures, the first-order modal frequency of the rear wall 9 of the cab is increased to 25.8 Hz relative to the existing mass-produced models.

[0055] A triangular reinforcement plate 20 is provided between the upper cross beam 22 of the door and the left and right side surround welds 3, and an oblique reinforcement plate 21 is provided on the left and right side surround welds 3. By taking the above measures, the first-order modal frequency of the cab top frame vibration is increased to 22.7Hz compared with 19.6Hz of the existing model, and the first-order modal frequency of the door frame vibration is increased to 46.5Hz compared with 27.9Hz of the mass-produced model.

[0056] Through the above-mentioned body-in-white structural features, the rigidity of the overall structure of the cab is greatly improved, and the vibration isolation effect of the cab is better.

[0057] The cab sound package structure is selected according to the unique working conditions and noise frequency of the harvester, and the sound package layout on the cab roof assembly 1, floor 8 and rear wall 9 is selected according to the needs of sound absorption, sound insulation and vibration control.

[0058] The cab sound package structure consists of MF (melamine) sound insulation cotton 209 pasted on the top interior panel 11, the rear interior panel 6, and the internal cavity of the top cover assembly 1, polyester fiber sound-absorbing cotton pasted on the upper surfaces of the front top and the rear top, foam cotton pasted on the rear side of the auxiliary seat, butyl damping 19 pasted on the upper surface of the floor 8, floor sound-absorbing cotton 17 covered on the upper surface of the floor damping pad 19, rear floor sound-absorbing cotton 5 pasted on the upper surface and left and right sides of the rear floor 15, oblique reinforcement plates welded together on the left and right sides covering the oblique support shell 14, and composite sound insulation pads 12 pasted on the sheet metal partition of the rear wall 9. The composite sound insulation pad 12 is composed of a surface layer of melamine + a middle honeycomb panel + a bottom layer of PU (polyurethane) foam. The surface layer of melamine is 12 mm thick and mainly plays a sound-absorbing role. The middle honeycomb panel mainly plays a sound-insulating role. The bottom layer of PU foam mainly plays a sound-absorbing role. The composite sound insulation pad 12 is combined with the rear wall 9 interior panel to perform two-layer sound insulation of the noise source in the direction of the rear wall 9 of the cab, which greatly reduces the impact of the noise source of the rear wall 9.

[0059] In an embodiment, the upper side of the floor 8 may be covered with a floor mat 7, and rubber-plastic cotton 16, floor sound-absorbing cotton 17 and floor damping pad 19 are laid in sequence below the floor mat 7.

[0060] In addition, in the embodiment, the roof assembly 1 includes a roof interior sound-absorbing cotton 10 disposed above the roof interior panel 11. The outer sides of the left side surrounding weld 3 and the right side surrounding weld 3 are both provided with an oblique support shell 14.

[0061] like Figure 3 As shown, Figure 3 A schematic diagram of an exploded view of the top cover assembly 1 is further shown. In an embodiment, the top cover assembly 1 includes an outer top cover 201 located at the top, a top cover rear injection molded part 203 located at the rear side, a top cover left injection molded part 204 located at the left side, a top cover right injection molded part 208 located at the right side, and a top cover front injection molded part 207 located at the front side. In an embodiment, these injection molded parts are surrounded and spliced ​​together to form the top cover assembly 1, and a first sealing strip 202 is provided between these injection molded parts to seal the gaps between the injection molded parts.

[0062] The sealing method of the cab mainly consists of the sealing of the body-in-white welds, the sealing of the left and right doors, the sealing of the wire passing holes on the cab floor 8 and the rear wall 9, the sealing of the roof, and the sealing between the roof and the body-in-white. The sealing of the body-in-white welds is carried out by weld sealant.

[0063] The flexible shaft passing hole 4 on the driving floor 8 and the rear wall 9 is sealed by a sealing threaded sleeve 23, the wire harness passing holes on the rear wall 9 and the floor 8 are sealed by a tapered coil 24, and the rectangular hole through which the brake pedal passes is sealed by a designed sealing pressing plate 25. The sealing pressing plate 25 consists of a pressing plate and a sponge layer. The sponge layer is used to fill the rectangular hole, and the pressing plate is arranged above the sponge layer. The gap is sealed by connecting the pressing plate and the sponge layer with bolts.

[0064] The sealing of the roof assembly 1 is achieved by adding a sealing sponge rubber strip (i.e., the second sealing strip 205) between multiple injection-molded parts of the roof. The sealing between the roof assembly 1 and the body-in-white is sealed by a sealing sponge rubber strip (i.e., the third sealing strip 206).

[0065] The sealing of the left and right door glasses 2 is carried out by a sealing strip 301, and a corner pre-bias is set at the upper and lower ends of the door glass 2 away from the door lock. The sealing strip 301 at the door hinge 302 and the door lock 303 of the left and right door glasses 2 has a compression amount of 1 / 3 to 1 / 2, and the structural gaps between the three door glasses 2 and the body-in-white are the same. A corner pre-bias 304 is set at the upper and lower ends of the door glass 2 away from the door lock 303 to ensure good sealing after the door is closed.

[0066] The cab mounting structure consists of rubber mounting shock pads, with two at the front and two at the rear, distributed in a four-point pattern. Through the modal analysis of the entire cab and specific working conditions, different stiffnesses and specifications are selected for the front and rear shock pads.

[0067] Through the above four design features of the cab, the cab noise value is reduced from 88 decibels in the initial state to 83 decibels.

[0068] According to the second aspect of the embodiments of the present application, a harvester is provided. The harvester includes the cab as above and also has the above beneficial effects, which will not be elaborated again here.

[0069] According to the harvester provided by the embodiments of the present application, the harvester may further include a mounting structure. The mounting structure is arranged below the cab, supports the cab, and is an elastic structure. The overall frequency of the mounting structure and the cab is not within the natural frequency range excited by the harvester, thereby reducing the possibility of resonance between the overall mounting structure and the cab and the harvester, and reducing the noise of the harvester.

[0070] The above are only the preferred embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent structural transformation made under the innovative concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is included in the protection scope of the present application.

Claims

1. A cab, characterized in that: The cab comprises a body-in-white, and the body-in-white comprises a floor, a rear wall, an upper cross beam of a door, a left side welded joint, and a right side welded joint, and the floor, the rear wall, the upper cross beam of the door, the left side welded joint, and the right side welded joint are jointly enclosed to form the body-in-white; Wherein, the floor comprises a board body and a plurality of first tubular reinforcement parts arranged on the surface of the board body, and the plurality of first tubular reinforcement parts are interwoven on the surface of the board body to form a first mesh structure; Wherein, the rear wall includes a wall body and a plurality of second tubular reinforcement parts arranged on the surface of the wall body, and the plurality of second tubular reinforcement parts are interwoven on the surface of the wall body to form a second mesh structure.

2. The cab according to claim 1, characterized in that: The first tubular reinforcement portion is a first rectangular tubular reinforcement portion, and the second tubular reinforcement portion is a second rectangular tubular reinforcement portion; Wherein, both the first rectangular tubular reinforcement portion and the second rectangular tubular reinforcement portion have a rectangular cross-section.

3. The cab according to claim 1, characterized in that: The cab also includes a reinforcement plate, which is connected between the upper cross beam of the door and the left side surrounding weld, and is connected between the upper cross beam of the door and the right side surrounding weld. Oblique reinforcement plates are also provided on the left side surrounding weld and the right side surrounding weld.

4. The cab according to claim 1, characterized in that: A plurality of hollow areas are defined by the second mesh structure; Among them, the cab also includes a plurality of composite layer sound insulation pads corresponding one by one to the plurality of hollow areas, and the composite layer sound insulation pads are filled in the corresponding hollow areas.

5. The cab according to claim 4, characterized in that: The composite sound insulation pad comprises a first sound absorbing layer, a sound insulation layer and a second sound absorbing layer which are arranged in sequence, the first sound absorbing layer and the second sound absorbing layer are both sound absorbing structures, and the sound insulation layer is a sound insulation structure; The cab also includes a rear wall interior panel, which is covered on the outside of the multiple composite layer sound insulation pads, and the rear wall interior panel is a sound insulation structure.

6. The cab according to claim 1, characterized in that: The cab further comprises a sealing layer, the sealing layer covering a weld formed by welding the floor, the rear wall, the upper cross beam of the door, the left side surrounding weld and the right side surrounding weld to form the body in white; The cab further comprises a roof assembly, the roof assembly comprises a plurality of injection molded parts spliced ​​together, the roof assembly further comprises a first sealing sponge rubber strip located between two connected injection molded parts, the roof assembly is connected to the upper side of the body-in-white, and the cab further comprises a second sealing sponge rubber strip disposed between the roof assembly and the top of the body-in-white; The flexible shaft wire passing holes on the floor and the rear wall are sealed by sealing threaded sleeves, the wiring harness wire passing holes on the rear wall and the floor are sealed by conical wire passing coils, and the rectangular hole on the floor for the brake pedal to pass through is sealed by a sealing pressure plate, which includes a pressure plate and a sponge layer, wherein the sponge layer is used to fill the rectangular hole, and the pressure plate is arranged above the sponge layer, and the pressure plate and the sponge layer are connected by bolts.

7. The cab according to claim 1, characterized in that: The cab further includes a left door glass welded to the left side enclosure and a right door glass welded to the right side enclosure, and the cab further includes door locks corresponding to the left door glass and the right door glass; Wherein, the door glass is provided with a pressure angle pre-bias in the area at the upper and lower ends of the door lock; Among them, the driving cab also includes a left door glass hinge corresponding to the left door glass, a right door glass hinge corresponding to the right door glass, a left car lock welded on the left side enclosure, and a right car lock welded on the right side enclosure. Sealing strips are provided at the left car lock and the left door glass hinge, and at the right car lock and the right door glass hinge. The sealing strips have a compression amount of 1 / 3 to 1 / 2.

8. The cab according to claim 1, characterized in that: The first modal frequency of the floor is configured to be 75.8 Hz, and the first modal frequency of the rear wall is configured to be 25.8 Hz.

9. A harvester, characterized in that: The harvester comprises a cab as claimed in any one of claims 1 to 8.

10. The harvester according to claim 9, characterized in that: The harvester also includes a suspension structure, which is arranged below the cab and supports the cab. The suspension structure is a rubber shock absorber, and the overall frequency of the suspension structure and the cab is not within the natural frequency range of the harvester excitation.

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