Cab roof and tractor

Abstract

The application provides a cab roof, comprising: a first roof panel, the first roof panel comprising a first mounting portion, the first mounting portion comprising a first fixing hole; a second roof panel, the second roof panel comprising a second mounting portion, the second mounting portion and the first mounting portion being arranged in mutual overlap, the second mounting portion comprising a first protruding portion extending from the second roof panel to the first roof panel, the first protruding portion passing through the first fixing hole, and the first roof panel and the second roof panel being fixedly connected; and the first mounting portion or the second mounting portion further comprising a first sealing groove extending along a width direction of the cab roof, the first sealing groove being located between the first mounting portion and the second mounting portion. The application also provides a tractor comprising the cab roof. The cab roof is assembled perfectly and sealed by injection molding through the arrangement of the first roof panel and the second roof panel.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a cab roof and a tractor. Background Technology

[0002] In existing technologies, tractor canopies are generally manufactured using one-piece double-layer vacuum forming, one-piece rotational molding, sheet metal stamping and welding, or a combination of sheet metal and plastic parts. Rotational molding and vacuum forming are very expensive, as are the costs of welding and painting sheet metal parts after stamping. Combining sheet metal and plastic parts also has the disadvantage of high cost. Additionally, sheet metal parts are relatively heavy. Injection molding is low-cost and lightweight, but injection-molded canopies must be made in a split configuration, and the sealing structure of a split canopy is more difficult to manufacture. Therefore, it is necessary to provide a cab canopy and tractor that overcomes the aforementioned shortcomings. Summary of the Invention

[0003] The purpose of this invention is to provide a cab roof and a tractor.

[0004] According to one aspect of the present invention, a cab roof is provided, comprising:

[0005] A first top plate, the first top plate including a first mounting part, the first mounting part including a first fixing hole;

[0006] The second top plate includes a second mounting portion, which is disposed overlapping the first mounting portion. The second mounting portion includes a first protrusion extending from the second top plate to the first top plate. The first protrusion passes through a first fixing hole. The first top plate and the second top plate are fixedly connected.

[0007] The first mounting portion or the second mounting portion further includes a first sealing groove extending along the width direction of the cab roof, the first sealing groove being located between the first mounting portion and the second mounting portion.

[0008] Preferably, the system further includes a first bottom plate located below the first top plate. The bottom surface of the first top plate also includes a third mounting portion, the third mounting portion including a first assembly groove. The first bottom plate includes a fourth mounting portion, the fourth mounting portion being embedded in the first assembly groove, and the fourth mounting portion and the third mounting portion being fixedly connected.

[0009] Preferably, the first mounting portion protrudes upward from the first top plate, the first sealing groove is recessed downward from the upper surface of the first mounting portion, the first fixing hole is provided in the first mounting portion and located on one side of the first sealing groove, the second mounting portion protrudes upward from the second top plate, the first mounting portion is located below the second mounting portion, and the first protrusion extends downward from the bottom surface of the second top plate.

[0010] Preferably, the third mounting portion further includes a second protrusion located in the first mounting groove, the second protrusion extending from the first top plate to the first bottom plate, and the fourth mounting portion includes a second fixing hole through which the second protrusion passes.

[0011] Preferably, the system further includes a second bottom plate located below the second top plate, a left bottom plate connecting the first bottom plate and the second bottom plate, and a right bottom plate. The bottom surface of the second top plate also includes a fifth mounting portion, which includes a second mounting groove and a third protrusion located within the second mounting groove. The upper end of the second bottom plate is provided with a sixth mounting portion, which includes a third fixing hole. The sixth mounting portion is embedded in the second mounting groove. The third protrusion extends from the second top plate to the second bottom plate and passes through the third fixing hole. The fifth mounting portion and the sixth mounting portion are fixedly connected.

[0012] Preferably, the first top plate, the second top plate, the first bottom plate, the second bottom plate, the left bottom plate, and the right bottom plate are all injection molded from polyethylene or polypropylene material.

[0013] Preferably, the first top plate includes a grid-like reinforcing rib extending downward from the bottom surface, and the second top plate includes a honeycomb-like reinforcing rib extending downward from the bottom surface.

[0014] Preferably, the second top plate includes a downwardly extending fixing frame, the bottom of which is provided with a first through hole and a connecting piece fixed to one side of the first through hole. The second bottom plate and the second top plate are fixed by screws passing through the second bottom plate and the connecting piece from bottom to top, and the screws and the connecting piece are threaded together.

[0015] Preferably, the bottom surfaces of the first base plate, the second base plate, the left base plate, and the right base plate are provided with upwardly recessed and interconnected ceiling fixing grooves. The bottom of the first base plate is provided with a front beam located within the ceiling fixing groove, and the bottom of the second base plate is provided with a rear beam located within the ceiling fixing groove. The first top plate also includes a first connecting part. The front beam and the first connecting part are connected by a first connecting member. The bottom of the first connecting member is fixed to the front beam. The first connecting member includes a first limiting part. The first limiting part and the first connecting part are in contact and used to support the first top plate. A second connecting member is provided between the rear beam and the second top plate. The second connecting member and the first connecting member have the same structure.

[0016] According to another aspect of the invention, a tractor is provided, including the cab roof.

[0017] Compared with the prior art, the cab roof and tractor provided by the present invention have the following beneficial effects:

[0018] The production and transportation of modular canopies can save space and transportation costs; the use of ultrasonic welding machines makes assembly convenient and the structure stable; the sealing effect is good, overcoming the disadvantage of difficult sealing structure of injection molded components; it greatly saves on the cost of raw materials, production process costs and labor assembly costs of the canopy; it reduces the overall weight of the canopy, further reducing the weight of the whole machine; at the same time, it saves on the cost of after-sales maintenance and warranty service fees. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] Figure 1 This is a perspective view of the cab roof of the present invention;

[0021] Figure 2 This is an exploded view of the cab roof of the present invention;

[0022] Figure 3 This is a cross-sectional view of the cab roof of the present invention;

[0023] Figure 4 This is a perspective view of the cab roof of the present invention from another angle;

[0024] Figure 5 This is a partially enlarged view of the second top plate of the present invention;

[0025] Figure 6 This is a cross-sectional view of the first connector of the present invention;

[0026] Figure 7 This is a perspective view of the first base plate of the present invention;

[0027] Figure 8 This is a perspective view of the first top plate of the present invention;

[0028] Figure 9 This is a perspective view of the second base plate of the present invention;

[0029] Figure 10 This is a cross-sectional view of the second top plate of the present invention. Detailed Implementation

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0032] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0033] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0036] See Figure 1 and Figure 2 This invention discloses a cab roof, comprising a first roof panel 1, a second roof panel 2, a first bottom panel 3, a second bottom panel 4, a left bottom panel 5, and a right bottom panel 6. The first roof panel 1 and the second roof panel 2 are located at the top of the cab roof. The first bottom panel 3 is fixed to the bottom of the first roof panel 1, and the second bottom panel 4 is fixed to the bottom of the second roof panel 2. The front end of the left bottom panel 5 is fixed to the first bottom panel 3, the rear end is fixed to the second bottom panel 4, and the top is fixed to the first roof panel 1. The right bottom panel 6 is symmetrically fixed to the right side of the cab roof in the same fixing method as the left bottom panel 5.

[0037] See Figure 3 and Figure 8The first top plate 1 includes a first mounting portion 11, which includes a first sealing groove 112 extending along the width direction of the cab roof and a first fixing hole 111 provided on one side of the first sealing groove 112. The first mounting portion 11 protrudes upward from the first top plate 1, the first sealing groove 112 is recessed downward, and the first fixing hole 111 is provided on the rear side of the first sealing groove 112.

[0038] The second top plate 2 includes a second mounting portion 21, which includes a first protrusion 211 extending from the second top plate 2 toward the first top plate 1. The first protrusion 211 passes downward through a first fixing hole 111. The second mounting portion 21 is configured to protrude upward, and the upper surface of the first mounting portion 11 and the lower surface of the second mounting portion 21 are in contact with each other. A first sealing groove 112 is located between the first top plate 1 and the second top plate 2.

[0039] In this invention, the first top plate 1, the second top plate 2, the first bottom plate 3, the second bottom plate 4, the left bottom plate 5, and the right bottom plate 6 are all made of polyethylene or polypropylene, particularly a modified PP granule, and are manufactured using an injection molding process. To ensure the sealing of the joints between the plates, the assembly method is as follows:

[0040] The first step is to inject sealant into the first sealing groove 112;

[0041] The second step is to insert the first protrusion 211 into the first fixing hole 111, and then press the first mounting part 11 and the second mounting part 21 together so that the sealant fills the gap between the first mounting part 11 and the second mounting part 21, and connect the first top plate 1 and the second top plate 2.

[0042] The third step is to use an ultrasonic welding machine, especially a handheld portable ultrasonic welding instrument, to melt the first protrusion 211, thereby fixing the first protrusion 211 to the first fixing hole 111, and further fixing the first top plate 1 and the second top plate 2.

[0043] In this embodiment, the first protrusion 211 is provided with a countersunk hole extending from bottom to top. During welding, the welding head only needs to be inserted into the countersunk hole to melt the first protrusion 211 radially outward, forming a technical effect similar to riveting. The first protrusion 211 and the first fixing hole 111 are evenly provided on the second top plate 2 and the first top plate 1, respectively, along the width direction of the cab roof.

[0044] In this embodiment, both the first fixing hole 111 and the first sealing groove 112 are provided on the first mounting portion 11, and the first protrusion 211 is provided on the second mounting portion 21. In other embodiments, the protrusion and the sealing groove may be provided on the same component, and the fixing hole may be provided on another component. Alternatively, the fixing hole or the protrusion may be provided inside the sealing groove.

[0045] The first sealing groove 112 is used to inject sealant between the first mounting part 11 and the second mounting part 21. Its placement on either the first top plate 1 or the second top plate 2 can achieve the expected technical effect, and therefore both fall within the protection scope of this invention.

[0046] See Figure 3 The first top plate 1 also includes a third mounting portion 12 disposed on its bottom surface. The third mounting portion 12 includes an upwardly recessed first mounting groove 122 and a second protrusion 121 located within the first mounting groove 122 and extending downward. The second protrusion 121 has the same structure as the first protrusion 121 and is provided with a countersunk hole. See also Figure 7 The top of the first base plate 3 is provided with a fourth mounting part 31, and the fourth mounting part 31 is provided with a second fixing hole 311.

[0047] Referring to the assembly method of the first top plate 1 and the second top plate 2, when assembling the first bottom plate 3, first inject sealant into the first assembly groove 122, then insert the second protrusion 121 downwards into the second fixing hole 311. At this time, the fourth mounting part 31 is embedded in the first assembly groove 122, and the sealant fills the gap between the fourth mounting part 31 and the first assembly groove 122. The second protrusion 121 is melted by ultrasonic welding, so that the first top plate 1 and the first bottom plate 3 are fixedly connected. The front ends of the first top plate 1 and the first bottom plate 3 are fixed by threaded connection.

[0048] See Figure 9 and Figure 10 The bottom surface of the second top plate 2 is provided with a fifth mounting part 22, which has the same structure as the third mounting part 12. The fifth mounting part 22 is also provided with a second mounting groove 222 and a third protrusion 221 located in the second mounting groove 222. The top of the second bottom plate 4 is provided with a sixth mounting part 41, which has the same structure as the fourth mounting part 31. The sixth mounting part 41 includes a third fixing hole 411.

[0049] The sixth mounting part 41 is embedded in the second assembly groove 222 filled with sealant, and the third protrusion 221 is inserted from top to bottom into the third fixing hole 411 and fixed by ultrasonic welding. The second top plate 2 and the second bottom plate 4 are fixedly connected.

[0050] See Figure 2 The left bottom plate 5 and the right bottom plate 6 are also fixed to the bottom of the first top plate 1 and the second top plate 2 respectively in the same way as the first bottom plate 3 or the second bottom plate 4.

[0051] See Figure 5The rear end of the second top plate 2 is provided with a downwardly extending fixing bracket 23. The bottom of the fixing bracket 23 has a first through hole 231, and a connecting piece 232 is also provided on one side of the first through hole 231. A screw passes through the second bottom plate 4 from bottom to top and is screwed into the first through hole 231, and is threadedly connected to the connecting piece 232, thereby fixing the second bottom plate 4 and the second top plate 2. (See also...) Figure 4 The bottom of the first top plate 1 is provided with a grid-like reinforcing rib 100, and the bottom of the second top plate 2 is provided with a honeycomb-like reinforcing rib 200.

[0052] The bottom surfaces of the first base plate 3, the second base plate 4, the left base plate 5, and the right base plate 6 are provided with upwardly recessed and interconnected roof fixing grooves 70 for fixing the cab roof. (See also...) Figure 6 The bottom of the first base plate 3 is provided with a front beam 71 located in the ceiling fixing groove 70, and the first top plate 1 also includes a first connecting part 13. The front beam 71 and the first connecting part 13 are connected by a first connecting member 72. The bottom of the first connecting member 72 is fixed to the front beam 71, and the upper part of the first connecting member 72 includes a first limiting part 721.

[0053] The first connecting portion 13 protrudes upward. The first limiting portion 721 is located inside the first connecting portion 13 and contacts the bottom surface of the first connecting portion 13. The first limiting portion 721 is used to support the first top plate 1. A nut is provided above the first connecting member 72. The nut is located above the first connecting portion 13. Tightening the nut prevents the first top plate 1 from moving upward.

[0054] The bottom of the second base plate 4 is provided with a rear beam 73 located in the ceiling fixing groove 70, and a second connector 74 for supporting the second top plate 2 is provided between the rear beam 73 and the second top plate 2. The structure of the second connector 74 is the same as that of the first connector 72.

[0055] In this embodiment, two connecting parts are symmetrically arranged on the first top plate 1, and are fixed to the front beam 71 by connecting parts. Two connecting parts are also symmetrically arranged on the second top plate 2, and are fixed to the rear beam 73 by connecting parts. The front end of the first bottom plate 3 is also provided with a groove for mounting vehicle lights, and the rear end of the second bottom plate 4 is also provided with a groove for mounting vehicle lights.

[0056] The present invention also discloses a tractor including the above-described cab roof. The cab roof of the present invention utilizes the advantage of low cost of injection-molded parts, while solving the problem of difficult-to-manufacture sealing structures of injection-molded parts by providing a first sealing groove 112, a first fixing hole 111, and a first protrusion 211.

[0057] In this embodiment, in the tractor's traveling direction, the first top plate is in front and the second top plate is behind, with the first top plate having a first fixing hole at the bottom and the second top plate having a first protrusion extending downwards. The technical solution protected by this invention also includes other embodiments, such as the first top plate in front and the second top plate behind, with the first top plate having a first fixing hole at the top and the second top plate having a first protrusion extending upwards; or the first top plate behind and the second top plate in front, with the first top plate having a first fixing hole at the bottom and the second top plate having a first protrusion extending downwards; or the first top plate behind and the second top plate in front, with the first top plate having a first fixing hole at the top and the second top plate having a first protrusion extending upwards.

[0058] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the invention. Therefore, it is intended that this invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A driver's cab canopy, characterized in that, include: A first top plate, the first top plate including a first mounting part including a first fixing hole, the bottom surface of the first top plate also including a third mounting part, the third mounting part including a first assembly groove; The second top plate includes a second mounting portion, which is disposed overlapping the first mounting portion. The second mounting portion includes a first protrusion extending from the second top plate to the first top plate. The first protrusion passes through a first fixing hole, and the first top plate and the second top plate are fixedly connected. The first mounting portion or the second mounting portion further includes a first sealing groove extending along the width direction of the cab roof, the first sealing groove being located between the first mounting portion and the second mounting portion; A first base plate is disposed below a first top plate. The first base plate includes a fourth mounting part, which is embedded in the first assembly groove. The fourth mounting part and the third mounting part are fixedly connected. The first mounting part protrudes upward from the first top plate, the first sealing groove is recessed downward from the upper surface of the first mounting part, the first fixing hole is provided in the first mounting part and located on one side of the first sealing groove, the second mounting part protrudes upward from the second top plate, the first mounting part is located below the second mounting part, and the first protrusion extends downward from the bottom surface of the second top plate. The third mounting part further includes a second protrusion located in the first mounting groove, the second protrusion extending from the first top plate to the first bottom plate, and the fourth mounting part includes a second fixing hole through which the second protrusion passes. The cab roof also includes: a second bottom plate located below the second top plate, a left bottom plate and a right bottom plate connecting the first bottom plate and the second bottom plate. The bottom surface of the second top plate also includes a fifth mounting part, which includes a second mounting groove and a third protrusion located in the second mounting groove. The upper end of the second bottom plate is provided with a sixth mounting part, which includes a third fixing hole. The sixth mounting part is embedded in the second mounting groove. The third protrusion extends from the second top plate to the second bottom plate and passes through the third fixing hole. The fifth mounting part and the sixth mounting part are fixedly connected.

2. The cab roof as described in claim 1, characterized in that, The first top plate, the second top plate, the first bottom plate, the second bottom plate, the left bottom plate, and the right bottom plate are all injection molded from polyethylene or polypropylene.

3. The cab roof as described in claim 2, characterized in that, The first top plate includes a grid-like reinforcing rib extending downward from the bottom surface, and the second top plate includes a honeycomb-like reinforcing rib extending downward from the bottom surface.

4. The cab roof as described in claim 3, characterized in that, The second top plate includes a downwardly extending fixing frame. The bottom of the fixing frame is provided with a first through hole and a connecting piece fixed to one side of the first through hole. The second bottom plate and the second top plate are fixed by screws passing through the second bottom plate and the connecting piece from bottom to top. The screws and the connecting piece are threaded together.

5. The cab roof as described in claim 4, characterized in that, The bottom surfaces of the first base plate, the second base plate, the left base plate, and the right base plate are provided with upwardly recessed and interconnected ceiling fixing grooves. The bottom of the first base plate is provided with a front beam located within the ceiling fixing groove, and the bottom of the second base plate is provided with a rear beam located within the ceiling fixing groove. The first top plate also includes a first connecting part. The front beam and the first connecting part are connected by a first connecting member. The bottom of the first connecting member is fixed to the front beam. The first connecting member includes a first limiting part. The first limiting part and the first connecting part are in contact and used to support the first top plate. A second connecting member is provided between the rear beam and the second top plate. The second connecting member has the same structure as the first connecting member.

6. A tractor, characterized in that, Includes the cab roof as described in any one of claims 1-5.

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