Cab canopy for a working machine and working machine

Abstract

The application relates to the field of engineering machinery, and discloses a cab shelf frame for engineering machinery and engineering machinery, the cab shelf frame comprising an upper shelf frame and a lower shelf frame, wherein the upper shelf frame comprises an upper butt joint plate and a plurality of upper supporting rods arranged in sequence and at intervals, the upper butt joint plate sequentially connecting the bottom ends of the upper supporting rods; the lower shelf frame comprises a lower butt joint plate, a mounting bottom plate and a plurality of lower supporting rods arranged in sequence and at intervals, the lower butt joint plate sequentially connecting the top ends of the lower supporting rods and being used for forming plate surface butt joint with the upper butt joint plate, and the mounting bottom plate sequentially connecting the bottom ends of the lower supporting rods. The cab shelf frame for engineering machinery and the engineering machinery are beneficial to enhancing the overall rigidity and stability of the cab shelf frame, and effectively preventing problems such as shaking and deformation during loading operation.

Description

Technical Field

[0001] This application belongs to the field of engineering machinery technology, specifically relating to a cab canopy for engineering machinery and engineering machinery. Background Technology

[0002] In existing construction machinery, especially equipment such as excavators, operations are often carried out under harsh conditions. To reduce costs and improve operator visibility, open-top cabs without enclosed cabins are widely used. Existing open-top cabs typically consist of an upper and lower canopy. The connection between the upper and lower canopies is relatively loose, and the connection between the lower canopy and the frame of the construction machinery is also relatively weak. This results in insufficient overall rigidity and stability of the cab, making it prone to swaying, deformation, and even loosening of connections, affecting operational safety and comfort. Utility Model Content

[0003] In view of at least one of the above-mentioned defects or deficiencies in the prior art, this application provides a cab canopy for engineering machinery and engineering machinery, which is conducive to enhancing the overall rigidity and stability of the cab canopy and effectively preventing problems such as shaking and deformation during loading operations.

[0004] To achieve the above objectives, this application provides a cab canopy for construction machinery, the cab canopy comprising:

[0005] The upper frame includes an upper connecting plate and a plurality of upper support rods arranged at intervals in sequence, wherein the upper connecting plate is sequentially connected to the bottom end of each of the upper support rods; and

[0006] The lower frame includes a lower connecting plate, a mounting base plate, and a plurality of lower support rods arranged at intervals in sequence. The lower connecting plate is connected to the top of each of the lower support rods in sequence and is used to form a plate-to-plate contact with the upper connecting plate. The mounting base plate is connected to the bottom of each of the lower support rods in sequence.

[0007] In some embodiments, the lower support frame includes a plurality of vertical stiffening plates arranged around the bottom end of the lower support rod, the vertical stiffening plates being fixedly connected to the lower support rod and the mounting base plate.

[0008] In some embodiments, the lower frame includes transverse connecting stiffeners connected between adjacent lower support rods (202).

[0009] In some embodiments, the upper support rod includes:

[0010] The upright part is connected to the upper mating plate;

[0011] The diagonal brace extends obliquely upward from the top of the upright section; and

[0012] The horizontal bar extends laterally from the top of the diagonal bar.

[0013] In some embodiments, the cab canopy also includes a canopy that covers each of the crossbar sections.

[0014] In some embodiments, the upper frame also includes a plurality of reinforcing bars connecting two adjacent crossbar sections.

[0015] In some embodiments, the upper canopy also includes an arched bend connecting two adjacent diagonal sections, with the canopy covering the crossbar and the arched bend.

[0016] In some embodiments, the upper connecting plate has an upper plate hole, the lower connecting plate has a lower plate hole that aligns with the upper plate hole, and the cab canopy also includes a first connecting member that detachably connects the upper plate hole and the lower plate hole.

[0017] In some embodiments, the mounting base plate is provided with mounting holes, and the cab canopy also includes a second connecting member detachably threaded through the mounting holes.

[0018] A second aspect of this application provides a piece of construction machinery, which includes the aforementioned cab canopy for construction machinery.

[0019] Through the above technical solution, the cab canopy of this application adopts a frame structure design. The integrated upper and lower connecting plates can not only increase the structural strength and rigidity of the canopy, but also ensure the stable connection between the upper and lower canopy by forming a plate-to-plate connection, avoiding the upper canopy from shaking after assembly. Overall, it improves the structural stability of the cab canopy and can be applied to engineering machinery to effectively resist vibration and shaking.

[0020] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0022] Figure 1 This application provides a specific embodiment of a cab canopy for construction machinery.

[0023] Figure 2 for Figure 1 A schematic diagram of the upper canopy of the driver's cab canopy;

[0024] Figure 3 for Figure 1 A schematic diagram of the lower canopy of the driver's cab canopy.

[0025] Explanation of reference numerals in the attached figures

[0026] Detailed Implementation

[0027] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0028] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0029] like Figures 1 to 3 As shown, the first exemplary embodiment of this application provides a cab canopy for construction machinery, which mainly includes an upper canopy 1 and a lower canopy 2. The upper canopy 1 includes an upper connecting plate 101 and a plurality of upper support rods 102 arranged at intervals in sequence. The upper connecting plate 101 is sequentially connected to the bottom ends of each upper support rod 102. The lower canopy 2 includes a lower connecting plate 201, a mounting base plate 203, and a plurality of lower support rods 202 arranged at intervals in sequence. The lower connecting plate 201 is sequentially connected to the top ends of each lower support rod 202 and is used to form a plate-to-plate contact with the upper connecting plate 101. The mounting base plate 203 is sequentially connected to the bottom ends of each lower support rod 202.

[0030] In this embodiment, the upper frame 1 constitutes the supporting structure of the top of the canopy. Multiple upper support rods 102 are arranged at intervals to form the main frame for supporting the canopy, providing the canopy with coverage area and basic strength, effectively dispersing the load of the canopy (such as falling objects and vibrations), and providing multi-point support for the top cover to prevent local collapse and improve the stability of the top structure. Crucially, the upper connecting plate 101 connects the bottom ends of each upper support rod 102 in sequence. This design rigidly connects each upper support rod 102 into a single unit, significantly enhancing the structural rigidity and integrity of the upper frame 1 itself, making it less prone to deformation; on the other hand, it provides the upper frame 1 with a stable, flat, and large-area connection interface, and strengthens the root connection of the upper frame 1.

[0031] The lower canopy 2 forms the supporting structure at the bottom of the canopy, and the spaced lower support rods 202 form the basic frame supporting the upper canopy 1. The lower connecting plate 201 connects the top ends of each lower support rod 202 in sequence. This design rigidly connects the top ends of each lower support rod 202 into one, greatly improving the structural rigidity and integrity of the lower canopy 2 itself, and providing a stable upper connection interface for the lower canopy 2. The mounting base plate 203 connects the bottom ends of each lower support rod 202 in sequence. This design rigidly connects the bottom ends of the lower support rods 202 into one, strengthening the structural strength and rigidity of the root of the lower canopy 2 (i.e., the connection point with the main body of the construction machinery), effectively resisting bending moment, shear force and vibration load at this point, solving the problem of weak root strength in existing technologies; at the same time, it provides a unified installation foundation with a large area, good rigidity and high strength for the entire cab canopy and the main frame of the construction machinery.

[0032] Crucially, during assembly, the lower connecting plate 201 can form a plate-to-plate contact with the upper connecting plate 101. This large-area rigid plate connection not only simplifies installation and ensures reliability, but more importantly, it enables efficient and uniform load transfer between the upper and lower canopies, firmly combining the upper canopy 1 and the lower canopy 2 into a highly rigid overall frame structure. This completely solves the problem of poor rigidity caused by loose connections between the upper and lower canopies in existing technologies, greatly improving the overall strength, rigidity, and stability of the entire cab canopy.

[0033] In one embodiment, the structure of the lower shelving 2 is further optimized. Specifically, as shown in... Figure 3 As shown, the lower canopy 2 includes multiple vertical stiffening plates 204 arranged around the bottom end of the lower support rod 202, each of which is fixedly connected to the lower support rod 202 and the mounting base plate 203. The rigid connection of the multiple vertical stiffening plates 204 provides strong support around the bottom end of the lower support rod 202, enhancing the connection strength, rigidity, and fatigue resistance at the junction of the lower support rod 202 and the mounting base plate 203. This effectively prevents loosening, cracking, or failure of this critical stress concentration node under long-term vibration and impact loads, providing a more reliable and durable foundation support for the entire cab canopy.

[0034] Furthermore, referring to Figure 3The lower canopy 2 includes transverse connecting stiffeners connecting adjacent lower support rods 202. These transverse connecting stiffeners extend laterally and are fixedly connected between two adjacent lower support rods 202, rigidly connecting them directly. This, together with the lower connecting plate 201 and the mounting base plate 203, forms an integrated frame structure. This transverse connection significantly improves the horizontal stiffness and stability of the lower canopy 2. By transferring and distributing loads to adjacent lower support rods 202, it avoids overloading of a single support rod, enabling the lower canopy 2 to more effectively resist lateral impacts and torsional forces. The entire cab canopy is thus better suited to the operation of construction machinery under complex working conditions.

[0035] In one embodiment, such as Figure 2 As shown, the upper support rod 102 is a double-bend rod structure. Specifically, the upper support rod 102 includes an upright section 1021, a diagonal section 1022, and a horizontal section 1023. The upright section 1021 is connected to the upper connecting plate 101. The diagonal section 1022 extends obliquely upward from the top of the upright section 1021, and the horizontal section 1023 extends laterally from the top of the diagonal section 1022. The upright section 1021 serves as the foundation support segment, its bottom end firmly connected to the upper connecting plate 101, thereby efficiently transferring vertical loads to the upper connecting plate 101 and providing stable root support for the entire upper support rod 102. Crucially, the diagonal section 1022, starting from the top of the upright section 1021, does not extend vertically upward, but rather at an oblique angle. This inclined design allows the center of gravity of the upper canopy 1 to shift downwards. Because the inclined rod 1022, through its own inclined path, significantly reduces the height of its top relative to the root of the upright rod 1021, it ultimately lowers the actual installation height and overall center of gravity of the canopy 3 supported by it, effectively solving the problem of poor stability caused by an excessively high center of gravity in existing technologies. Simultaneously, the inclined structure also improves the lateral stiffness of the upper support rod 102. Furthermore, the horizontal rod 1023 extends horizontally, its core function being to provide the necessary horizontal support surface for the canopy 3, ensuring the canopy 3's coverage area and high stability.

[0036] In one embodiment, such as Figure 2 As shown, the upper canopy 1 also includes multiple reinforcing bars 103 connected between two adjacent crossbar sections 1023. The multiple reinforcing bars 103 can be arranged in a crisscross pattern on the crossbar sections 1023 to form a grid-like truss structure, making the top structure of the entire upper canopy 1 more stable. Especially when the canopy cover 3 is covered by the crossbar section 1023, the multiple reinforcing bars 103 can provide more sufficient support for the canopy cover 3, preventing the canopy cover 3 from being shaken off or blown off by the wind.

[0037] In one embodiment, such as Figure 2As shown, the upper canopy frame 1 also includes an arched bend 104 connecting two adjacent diagonal braces 1022, with the canopy 3 covering the crossbar 1023 and the arched bend 104. The arched bend 104 is arranged laterally, with its two ends firmly connected to the upper regions of the adjacent diagonal braces 1022. Thus, the arched bend 104 forms a rigid, laterally stable arch in the cab's top region, greatly enhancing the overall rigidity and deformation resistance of the top region of the upper canopy frame 1, solving the problem of easy deformation of the convertible structure's top. Simultaneously, the arched bend 104 optimizes the load transmission path among the multiple upper supports 102, dispersing local stress; furthermore, the arched top surface of the arched bend 104 provides a central support point for the canopy 3, increasing its stability.

[0038] In one embodiment, such as Figures 1 to 3 As shown, the upper connecting plate 101 has an upper plate hole 1011, and the lower connecting plate 201 has a lower plate hole 2011 that aligns with the upper plate hole 1011. The cab canopy frame also includes a first connecting member 4 that detachably connects the upper plate hole 1011 and the lower plate hole 2011. Specifically, the first connecting member 4 can be a first bolt assembly, which includes a first bolt for connecting the upper plate hole 1011 and the lower plate hole 2011, and a first washer disposed between the nut of the first bolt and the upper connecting plate 101. Thus, when the upper connecting plate 101 and the lower connecting plate 201 are in plate-to-plate contact, the upper plate hole 1011 and the lower plate hole 2011 are aligned with each other. At this time, the upper connecting member 4 is used to connect and fix the upper connecting plate 101 and the lower connecting plate 2011 through the upper plate hole 1011 and the lower plate hole 2011, thereby enabling convenient installation of the upper canopy frame 1. Meanwhile, when it is required to disassemble the upper canopy 1 to reduce the height of the cab canopy, the entire upper canopy 1 can be easily disassembled by removing the first connecting piece 4.

[0039] In addition, multiple holes can be provided for the upper plate 1011 and the lower plate 2011. Multiple holes 1011 are arranged sequentially at intervals along the length of the upper connecting plate 101, and multiple holes 2011 are arranged sequentially at intervals along the length of the lower connecting plate 201, thereby forming multiple fastening points, reducing stress concentration between the first connecting member 4 and the plate, and enhancing the connection stability between the upper frame 1 and the lower frame 2.

[0040] In one embodiment, such as Figure 1 and Figure 3As shown, the mounting base plate 203 has mounting holes 2031, and the cab canopy also includes a second connecting member 5 detachably connected to the mounting holes 2031. Specifically, the second connecting member 5 can be a second bolt assembly, which includes a second bolt for connecting to the mounting holes 2031 and a second washer disposed between the nut of the second bolt and the mounting base plate 203. Thus, when the lower canopy 2 is installed on the main frame of the construction machinery, the mounting base plate 203 and the main frame are fixed by connecting and fixing with the second connecting member 5, thereby enabling convenient assembly and disassembly of the lower canopy 2.

[0041] In this embodiment, multiple mounting holes 2031 may be provided. The multiple mounting holes 2031 are arranged sequentially at intervals along the length direction of the mounting base plate 203, thereby forming multiple fastening points, reducing stress concentration between the second through-connector 5 and the plate, and enhancing the connection stability between the lower frame 2 and the engineering machinery.

[0042] A second exemplary embodiment of this application provides an engineering machine that includes the aforementioned cab canopy for engineering machines. Obviously, the engineering machine of this exemplary embodiment possesses all the technical effects brought about by the aforementioned cab canopy, and therefore will not be described again here.

[0043] In practical applications, this construction machinery can be an excavator.

[0044] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A cab canopy for engineering machinery, characterized in that, The cab canopy includes: The upper frame (1) includes an upper connecting plate (101) and a plurality of upper support rods (102) arranged at intervals in sequence, wherein the upper connecting plate (101) is connected in sequence to the bottom end of each of the upper support rods (102); and The lower frame (2) includes a lower connecting plate (201), a mounting base plate (203), and a plurality of lower support rods (202) arranged at intervals in sequence. The lower connecting plate (201) is connected to the top of each of the lower support rods (202) in sequence and is used to form a plate-to-plate contact with the upper connecting plate (101). The mounting base plate (203) is connected to the bottom of each of the lower support rods (202) in sequence.

2. The cab canopy for construction machinery according to claim 1, characterized in that, The lower frame (2) includes a plurality of vertical stiffeners (204) arranged around the bottom end of the lower support rod (202), and the vertical stiffeners (204) are fixedly connected to the lower support rod (202) and the mounting base plate (203).

3. The cab canopy for engineering machinery according to claim 2, characterized in that, The lower frame (2) includes transverse connecting stiffeners connected between adjacent lower support rods (202).

4. The cab canopy for engineering machinery according to claim 1, characterized in that, The upper support rod (102) includes: The upright part (1021) is connected to the upper docking plate (101); The diagonal brace (1022) extends obliquely upward from the top of the upright brace (1021); and The horizontal bar portion (1023) extends laterally from the top of the diagonal bar portion (1022).

5. The cab canopy for engineering machinery according to claim 4, characterized in that, The cab canopy also includes a canopy (3) that covers each of the crossbar sections (1023).

6. The cab canopy for engineering machinery according to claim 5, characterized in that, The upper frame (1) also includes a plurality of reinforcing bars (103) connecting two adjacent crossbar sections (1023).

7. The cab canopy for engineering machinery according to claim 5, characterized in that, The upper frame (1) also includes an arched bend (104) connecting two adjacent diagonal sections (1022), and the canopy (3) covers the horizontal section (1023) and the arched bend (104).

8. The cab canopy for construction machinery according to any one of claims 1 to 7, characterized in that, The upper connecting plate (101) is provided with an upper plate hole (1011), and the lower connecting plate (201) is provided with a lower plate hole (2011) that is aligned with the upper plate hole (1011). The cab canopy also includes a first connecting member (4) that is detachably connected to the upper plate hole (1011) and the lower plate hole (2011).

9. The cab canopy for construction machinery according to any one of claims 1 to 7, characterized in that, The mounting base plate (203) is provided with mounting holes (2031), and the cab canopy also includes a second connecting piece (5) that is detachably connected to the mounting holes (2031).

10. An engineering machinery, characterized in that, The construction machinery includes a cab canopy for construction machinery as described in any one of claims 1 to 9.

Images