A driver's cab for construction machinery

Abstract

This invention discloses a cab for engineering machinery, comprising a C-shaped irregular frame, a windshield, a rear windshield, a left door assembly, a right door assembly, a roof glass, and a roof cover assembly. The C-shaped irregular frame includes two symmetrically arranged C-shaped side frames and connecting frames. The two ends of the openings of the C-shaped side frames are the beginning and end, respectively. The beginning ends of the two C-shaped side frames are connected by the connecting frames, and the end ends of the two C-shaped side frames are connected by the connecting frames. The left door assembly and the right door assembly are respectively hinged to the two C-shaped side frames. Along the C-shaped path, the roof glass, the rear windshield, and the base are connected between the two C-shaped side frames. The roof cover assembly is mounted on the connecting frame on the roof glass side. The windshield is positioned between the two connecting frames. This invention optimizes the cab frame structure, simplifies the manufacturing process, and reduces frame manufacturing costs; it eliminates the A-pillar and uses a large area of ​​glass to increase the driver's field of vision; and it ensures the cab's heat insulation, vibration damping, and noise reduction functions through the application of new glass technology.

Description

Technical Field

[0001] This invention relates to a driver's cab for engineering machinery, belonging to the field of driver's cab technology. Background Technology

[0002] The cab is an important component of construction machinery, providing drivers with a safe and comfortable operating environment.

[0003] Currently, the cab structure is typically constructed by welding rectangular tubes or profiles into a supporting frame, which is then covered with sheet metal parts; or by directly welding the main cab frame with pressed sheet metal parts. Both methods of cab construction usually involve a wide variety of materials and a complex assembly process; the cab typically employs a four-post structure, and the presence of the front post restricts the operator's field of vision.

[0004] Therefore, while ensuring the structural strength of the cab, how to simplify the cab frame structure and improve the driver's visibility is a problem that engineers need to solve. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a cab for engineering machinery. The present invention optimizes the cab frame structure, simplifies the manufacturing process, and reduces the frame manufacturing cost; eliminates the A-pillar and uses large-area glass to increase the driver's operating field of vision; at the same time, through the application of new glass technology, it ensures the cab's heat insulation and vibration isolation and noise reduction functions.

[0006] To achieve the above objectives, the present invention provides a cab for construction machinery, comprising a C-shaped irregular frame, a front windshield, a rear windshield, a left door assembly, a right door assembly, a roof glass, and a roof assembly;

[0007] The C-shaped irregular frame includes two symmetrically arranged C-shaped side frames and a connecting frame. The two ends of the opening of the C-shaped side frames are the head end and the tail end, respectively. The head ends of the two C-shaped side frames are connected by the connecting frame, and the tail ends of the two C-shaped side frames are connected by the connecting frame.

[0008] The left door assembly and the right door assembly are respectively hinged to the two C-shaped side frames;

[0009] Along the C-shaped path, the top glass, rear window glass and base are connected between the two C-shaped side frames;

[0010] The top cover assembly is installed on the connecting frame on the side of the top glass;

[0011] A windshield is installed between the two connecting frames.

[0012] Furthermore, the C-shaped irregular skeleton is a hollow structure, the cross-section of the C-shaped irregular skeleton is rectangular, one corner of the rectangle is concave to form a glass bonding surface, and the corner opposite to the glass bonding surface is convex to form a rubber strip sealing plate;

[0013] In the C-type side frame, the glass bonding surface is located on the side of the two C-type side frames that are close to each other, and is used to connect the roof glass, the rear window glass and the base; the rubber strip sealing plate is located on the side of the two C-type side frames that are opposite to each other, and is used to bond the left door assembly and the right door assembly.

[0014] In the connecting frame, the glass bonding surface is located on the opposite side of the two connecting frames and is used to connect the base and the top cover assembly; the rubber sealing plate is located on the adjacent side of the two connecting frames and is used to connect the windshield.

[0015] Furthermore, both the windshield and the rear windshield comprise PVB laminated glass, which includes two glass layers and a PVB layer sandwiched between the two glass layers.

[0016] Furthermore, both the left and right door assemblies include door glass, the outer edge of which is fitted with a sealing strip, and a metal frame is provided on the side of the door glass facing inside the vehicle, with a handrail provided on the metal frame.

[0017] Furthermore, the sealing strip has a U-shaped cross-section, and a sealing sheet with an arc-shaped cross-section is provided on one side of the outer wall of the U-shape. The direction of the sealing sheet is opposite to the opening direction of the U-shape, and a buffer tube with an annular cross-section is provided on the other side of the outer wall of the U-shape.

[0018] The buffer tube is equipped with a pair of sealing feet.

[0019] Furthermore, the windshield is provided with L-shaped transparent baffles on both sides near the left and right door assemblies. The openings of the L-shaped transparent baffles face the sealing strip. One side of the L-shaped transparent baffle is connected to the windshield, and the other side is used for the buffer tube and sealing foot of the sealing strip to adhere when the door is closed.

[0020] Furthermore, the top cover assembly includes a support plate, an outer cover, LED tooling lights, and status indicator lights;

[0021] The support plate is mounted on the connecting frame, the outer cover is mounted on the support plate, and the LED tooling light and status indicator light are mounted on the outer cover;

[0022] Two LED tool lights are provided and are symmetrically arranged at both ends of the outer casing.

[0023] Furthermore, the top glass includes electrically controlled glass, which includes two glass layers and a liquid crystal film sandwiched between the two glass layers. The liquid crystal film is externally connected to a control circuit, which is connected to a power supply. The control circuit is equipped with a switch for controlling the on / off state of the liquid crystal film and the power supply circuit.

[0024] The beneficial effects achieved by this invention are as follows:

[0025] This invention provides a cab for engineering machinery. The cab of this invention adopts a C-shaped irregular frame structure, which is simple to manufacture and low in cost. At the same time, this invention eliminates the A-pillar while ensuring strength requirements, and uses glass technology throughout, which provides the driver with a wide driving vision and improves driving safety.

[0026] The present invention incorporates an electrically controlled glass on the top glass, and the light transmittance of the top glass can be adjusted by regulating the on / off state of the liquid crystal film circuit.

[0027] This invention uses PVB laminated glass in the windshield and rear windshield, which can effectively improve sound insulation and block heat from ultraviolet and infrared rays. Attached Figure Description

[0028] Figure 1 This is a perspective view of a cab for construction machinery provided in an embodiment of the present invention;

[0029] Figure 2 This is a perspective view of a C-shaped irregular frame in the cab of an engineering machinery provided in an embodiment of the present invention;

[0030] Figure 3 This is a cross-sectional view of a C-shaped irregular frame in the cab of an engineering machinery provided in an embodiment of the present invention;

[0031] Figure 4 This is a structural diagram of PVB laminated glass in the cab of engineering machinery provided in an embodiment of the present invention;

[0032] Figure 5 This is a structural diagram of a left door assembly or a right door assembly in the cab of an engineering machinery provided in an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the sealing of the left door assembly or the right door assembly in the cab of an engineering machinery according to an embodiment of the present invention;

[0034] Figure 7 yes Figure 6 A magnified view of a section at point I;

[0035] Figure 8 yes Figure 6 Enlarged view of section II in the middle;

[0036] Figure 9 This is a perspective view of a cab roof assembly for engineering machinery provided in an embodiment of the present invention;

[0037] Figure 10 This is a structural and schematic diagram of an electrically controlled glass in the cab of engineering machinery provided by an embodiment of the present invention;

[0038] Figure 11 This is a schematic diagram of the disassembly structure of a cab for engineering machinery provided in an embodiment of the present invention;

[0039] In the picture: 1. C-shaped irregular frame; 2. Front windshield; 3. Left door assembly; 4. Rear windshield; 5. Roof glass; 6. Roof assembly; 7. Right door assembly; 8. Metal frame; 10. Door glass; 12. Sealing strip; 13. Outer cover; 14. LED tooling light; 15. Status indicator light. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0041] Embodiments of the present invention provide a cab for engineering machinery, such as... Figures 1 to 11 As shown, the cab includes a C-shaped irregular frame 1, and a front windshield 2, a rear windshield 4, a left door assembly 3, a right door assembly 7, a roof glass 5, and a roof cover assembly 6, all mounted on the C-shaped irregular frame 1. Compared to the cab manufacturing process in the prior art, this invention optimizes the cab frame structure, simplifies the manufacturing process, and can effectively reduce the manufacturing cost of the cab frame. Furthermore, this invention eliminates the A-pillar design during cab manufacturing and uses glass products extensively, effectively increasing the driver's field of vision while ensuring the cab's strength. Additionally, this invention employs novel glass technology, effectively ensuring the cab's heat insulation, vibration isolation, and noise reduction effects.

[0042] In the specific design, such as Figure 1 , Figure 2 Figure 11 As shown, to achieve the overall structure of the C-shaped irregular frame 1, this invention designs two symmetrical C-shaped side frames and a connecting frame for connecting the two C-shaped side frames. To easily distinguish the two ends of the C-shaped side frames, one end of the C-shaped side frame is defined as the head end and the other end as the tail end. The head ends of the two C-shaped side frames are connected by the connecting frame, and the tail ends of the two C-shaped side frames are connected by the connecting frame to complete the design of the integrated C-shaped irregular frame 1 structure. In the specific design, to ensure the strength of the frame, the C-shaped irregular frame 1 is made of high-strength alloy steel.

[0043] like Figure 1 , Figure 2 Figure 11 As shown, after the design of the C-shaped irregular frame 1 is completed, other equipment is installed: the left door assembly 3 and the right door assembly 7 are respectively hinged to the two C-shaped side frames; along the C-shaped path, the top glass 5, the rear windshield 4 and the base are sequentially set between the two C-shaped side frames; the top cover assembly 6 is set on the connecting frame on the side of the top glass 5; the front windshield 2 is set between the two connecting frames.

[0044] like Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, in designing the C-shaped irregular frame 1, in order to reduce the weight of the cab, the C-shaped irregular frame 1 is made of a cavity structure and the cross section is set as a rectangle; in order to facilitate the installation of other structures of the cab, one corner of the rectangle is recessed to form a glass bonding surface, and at the same time, at the corner that is diagonally opposite to the glass bonding surface, a rubber strip sealing plate is protruded to fix other structures on the C-shaped irregular frame 1;

[0045] like Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, in the specific setup, in the C-shaped side frame, the glass bonding surface is located on the side of the two C-shaped side frames that are close together, so that the top glass 5, the rear windshield 4, and the base can be bonded and fixed on the glass bonding surface. The adhesive strip sealing plate is located on the side of the two C-shaped side frames that are opposite to each other, so that the left door assembly 3 and the right door assembly 7 can be bonded and sealed when closed. In the connecting frame, the glass bonding surface is located on the side of the two connecting frames that are opposite to each other, so that the base and the top cover assembly 6 can be connected. The adhesive strip sealing plate is located on the side of the two connecting frames that are close together, so that the windshield 2 can be connected.

[0046] like Figure 1 , Figure 4 and Figure 11 As shown, in order to improve sound insulation, maintain a quiet and comfortable working environment, block ultraviolet rays and absorb heat from the infrared spectrum to protect the driver's skin health and delay the aging of interior controls in the cab; at the same time, reduce the transmission of sunlight and reduce cooling energy consumption; and prevent glass from shattering and achieving greater safety and reliability, this invention uses PVB laminated glass in the design of the windshield 2 and the rear windshield 4. PVB laminated glass includes two glass layers on the outside and a PVB layer sandwiched between the two glass layers.

[0047] like Figure 1 and Figure 5As shown, when designing the left door assembly 3 and the right door assembly 7, since they are two doors with the same structure set as mirror images, it is sufficient to introduce one door assembly: including the door glass 10, which is the main part of the door assembly. To improve the sealing performance, a sealing strip 12 is fitted on the outer edge of the door glass 10, which works in conjunction with the sealing strip on the C-shaped side frame and the windshield 2 to achieve a seal. The side of the door glass 10 facing the inside of the vehicle is provided with a metal frame 8, and the metal frame 8 is provided with a handrail to facilitate the driver to open the door from inside the driver's cab.

[0048] like Figure 1 , Figure 2 as well as Figures 5 to 8 As shown, in order to achieve "a sealing strip 12 is fitted on the outer edge of the door glass 10, which works in conjunction with the sealing strip on the C-shaped side frame and the windshield 2 to achieve a seal", the sealing strip 12 has the following features: its cross-section is set in a U-shape, which makes it easy to insert into the edge of the door glass 10; at the same time, a sealing piece with an arc-shaped cross-section is provided on one side of the outer wall of the U-shape, and the direction of the sealing piece is opposite to the opening direction of the U-shape, so that it can cover the windshield 2 and the C-shaped frame 1 after the door assembly is closed, thereby improving the sealing performance when the door is closed; A ring-shaped buffer tube is installed on the other side of the U-shaped outer wall to buffer the impact force when the door assembly is closed. A pair of sealing feet are also installed on the buffer tube. On both sides of the windshield 2 near the left door assembly 3 and the right door assembly 7, there are L-shaped transparent baffles. The opening of the L-shaped transparent baffle faces the sealing strip 12. One side of the L-shaped transparent baffle is connected to the windshield 2, and the other side is used for the buffer tube and sealing feet of the sealing strip 12 to adhere when the door is closed, thereby improving the sealing performance of the cab.

[0049] like Figure 1 , Figure 2 and Figure 9 As shown, in the specific design, the top cover assembly 6 includes a support plate, an outer cover 13, LED tool lights 14, and status indicator lights 15. The support plate is set on the connecting frame, the outer cover 13 is set on the support plate, and the LED tool lights 14 and status indicator lights 15 are installed on the outer cover 13. Two LED tool lights 14 are provided and symmetrically arranged at both ends of the outer cover 13 to facilitate lighting operations in the dark. At the same time, the status indicator lights 15 can display different colors to warn or notify external workers of the current working status.

[0050] like Figure 10As shown, in the specific design, to control direct sunlight from entering the cab, the roof glass 5 is designed with electrically controlled glass. The electrically controlled glass consists of two glass layers and a liquid crystal film sandwiched between them. To achieve the electronic control effect, the liquid crystal film is connected to an external control circuit, which is connected to a power source. The control circuit also includes a switch. By controlling the on / off state of the switch, the connection between the liquid crystal film and the power circuit is controlled, thus controlling the light: In its natural state, the circuit is open, the liquid crystal molecules inside the liquid crystal film are randomly arranged, and the glass is milky white, i.e., opaque, blocking the entry of external light; after being powered on, the liquid crystal molecules inside the liquid crystal film become oriented and regularly arranged, forming a transparent state, allowing light to pass through; the operator can switch between these states according to different needs.

[0051] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A driver's cab for engineering machinery, characterized in that: It includes a C-shaped irregular frame (1), a front windshield (2), a rear windshield (4), a left door assembly (3), a right door assembly (7), a roof glass (5), and a roof assembly (6); The C-shaped irregular skeleton (1) includes a connecting frame and two symmetrically arranged C-shaped side frames. The two ends of the opening of the C-shaped side frames are the head end and the tail end, respectively. The head ends of the two C-shaped side frames are connected by the connecting frame, and the tail ends of the two C-shaped side frames are connected by the connecting frame. The left door assembly (3) and the right door assembly (7) are respectively hinged to the two C-shaped side frames; Along the C-shaped path, the top glass (5), the rear window glass (4), and the base are connected between the two C-shaped side frames; The top cover assembly (6) is installed on the connecting frame on the side of the top glass (5); A windshield (2) is disposed between the two connecting frames; The C-shaped irregular skeleton (1) is a cavity structure. The cross-section of the C-shaped irregular skeleton (1) is rectangular. One corner of the rectangle is concave to form a glass bonding surface. At the corner that is diagonally opposite to the glass bonding surface, it convexes to form a rubber strip sealing plate. In the C-type side frame, the glass bonding surface is located on the side of the two C-type side frames that are close to each other, and is used to connect the top glass (5), the rear window glass (4) and the base; the rubber strip sealing plate is located on the side of the two C-type side frames that are opposite to each other, and is used to bond the left door assembly (3) and the right door assembly (7); In the connecting frame, the glass bonding surface is located on the opposite side of the two connecting frames and is used to connect the base and the top cover assembly (6); the rubber strip sealing plate is located on the adjacent side of the two connecting frames and is used to connect the windshield (2).

2. The cab for engineering machinery according to claim 1, characterized in that: Both the front windshield (2) and the rear windshield (4) include PVB laminated glass, which includes two glass layers and a PVB layer sandwiched between the two glass layers.

3. The cab for engineering machinery according to claim 1, characterized in that: The left door assembly (3) and the right door assembly (7) both include door glass (10). The outer edge of the door glass (10) is fitted with a sealing strip (12). The side of the door glass (10) facing the inside of the vehicle is provided with a metal frame (8). The metal frame (8) is provided with a handrail.

4. The cab for engineering machinery according to claim 3, characterized in that: The sealing strip (12) has a U-shaped cross section. A sealing sheet with an arc-shaped cross section is provided on one side of the outer wall of the U-shape. The direction of the sealing sheet is opposite to the opening direction of the U-shape. A buffer tube with an annular cross section is provided on the other side of the outer wall of the U-shape. The buffer tube is equipped with a pair of sealing feet.

5. The cab for engineering machinery according to claim 4, characterized in that: The windshield (2) is provided with L-shaped transparent baffles on both sides near the left door assembly (3) and the right door assembly (7). The opening of the L-shaped transparent baffle faces the sealing strip (12). One side of the L-shaped transparent baffle is connected to the windshield (2), and the other side is used for the buffer tube and sealing foot of the sealing strip (12) to be attached when the door is closed.

6. The cab for engineering machinery according to claim 1, characterized in that: The top cover assembly (6) includes a support plate, an outer cover (13), an LED tooling light (14), and a status indicator light (15); The support plate is disposed on the connecting frame, the outer cover (13) is disposed on the support plate, and the LED tooling light (14) and status indicator light (15) are mounted on the outer cover (13); Two LED tool lights (14) are provided and are symmetrically arranged at both ends of the outer cover (13).

7. The cab for engineering machinery according to claim 1, characterized in that: The top glass (5) includes an electrically controlled glass, which includes two glass layers and a liquid crystal film sandwiched between the two glass layers. The liquid crystal film is externally connected to a control circuit, which is connected to a power supply. The control circuit is equipped with a switch for controlling the connection and disconnection between the liquid crystal film and the power supply circuit.

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