Loader cab door convenient to use

Abstract

A loader cab door convenient to use is characterized in that an upper door plate and a lower door plate which are hinged together are arranged in a door frame, the upper end of the upper door plate is hinged to the door frame, and supporting assemblies connected with the door frame are arranged on the two sides of the upper door plate; the lower end of the lower door plate is slidably connected with the door frame; a pushing assembly is further arranged on the lower door plate and comprises a pushing button and a pushing rod, and at the initial position, under the action of the pushing button and the pushing rod, the upper door plate and the lower door plate are separated from each other in the attached closed state. A simple and easy-to-control folding mode is adopted, automatic folding and upturning opening and closing of the upper door plate and the lower door plate are achieved through coordination of the connecting assembly, the pushing assembly and the supporting assembly, the space in front of a cab door is saved, the problem that a traditional cab door upturning track occupies a large space area is solved, a driver can conveniently get on and off a vehicle, and the driving safety is improved. The device can better adapt to the narrow space in front of the cab door of the loader, is simple in structure and convenient to operate, and can be expanded to be applied to other occasions with narrow spaces.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a loader cab door that is easy to use. Background Art

[0002] In the prior art, for some engineering machinery vehicles, due to the high position of the cab and limited space at the platform, it is often necessary to set the cab door narrower to adapt to environmental needs. However, when the loader opens the cab door, the driver first climbs up the escalator, stands on the escalator and pulls the handle to open the cab door. However, the cab door will affect the space where the driver is during the opening process, causing inconvenience to the driver. Therefore, a loader cab door opening structure is needed, which can save the space in front of the cab door while ensuring the smooth opening of the cab door and does not interfere with the space occupied by the driver. Summary of the invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a loader cab door which is simple in structure, good in effect and easy to use.

[0004] The utility model is realized by the following technical scheme: a convenient-to-use loader cab door, comprising a door frame, an upper door panel and a lower door panel are arranged in the door frame, the upper door panel and the lower door panel are hinged together, the upper end of the upper door panel is hinged together with the door frame, and two sides of the upper door panel are provided with supporting components connected with two sides of the door frame; the lower end of the lower door panel is slidably connected with the door frame, and two sides of the door frame are provided with sliding grooves for the lower end of the lower door panel to slide, and the lower part of the lower door panel is provided with a pull-down handle; the lower door panel is also provided with a pushing component, and the pushing component includes a pushing button and a pushing rod, the pushing button is arranged on the lower door panel, one end of the pushing rod is connected to the pushing button, and the other end of the pushing rod is fitted with the door frame. In the initial position, the vertical lower door panel generates an offset angle under the action of the pushing button and the pushing rod, leaving the dead point position of the upper door panel and the lower door panel, and the upper door panel and the lower door panel are separated from the closed state of fitting each other.

[0005] It is further provided that the upper door panel and the lower door panel are hinged together through a connecting assembly, the connecting assembly comprises an upper hinge plate, a lower hinge plate and a hinge pin, the upper hinge plate and the lower hinge plate are respectively arranged on the upper door panel and the lower door panel, and the upper hinge plate and the lower hinge plate are connected together through a hinge pin.

[0006] The upper door plate and the lower door plate are tightly fitted to each other when in a closed state.

[0007] The two ends of the support assembly are hinged to the door frame and the upper door panel respectively.

[0008] The support assembly includes an upward push gas spring and a downward push gas spring, the upper end of the upward push gas spring is hinged to the upper door panel, the lower end of the upward push gas spring is hinged to the door frame, the lower end of the downward push gas spring is hinged to the upper door panel, and the upper end of the downward push gas spring is hinged to the door frame.

[0009] Slide grooves are arranged on both sides of the door frame, and a pulley used in conjunction with the slide grooves is arranged at the lower end of the lower door panel.

[0010] The pushing assembly includes a door handle, an initial rotating block, a reset spring, a pull plate, an end rotating block, a pushing roller and a fixed bracket. The door handle and the fixed bracket are arranged on the lower door panel. The center of the initial rotating block is hinged on the fixed bracket. One end of the initial rotating block contacts the button on the door handle. The other end of the initial rotating block is hinged to the pull plate. The rotation center of the reset spring is arranged on the fixed bracket. The reset spring is used to reset the initial rotating block. The end of the pull plate close to the upper door panel is hinged to the end rotating block. The center of the end rotating block is hinged to the lower door panel. The pushing roller is arranged on the end rotating block. The pushing roller fits the door frame.

[0011] The initial rotating block is V-shaped, and a button capable of automatically resetting is arranged on the door handle.

[0012] The terminal rotating block is V-shaped, and the door frame is provided with a baffle plate which fits with the terminal rotating block.

[0013] The utility model has the following advantages: the easy-to-use loader cab door of the utility model adopts a simple and easy-to-control folding method, and realizes automatic folding, flipping, opening and closing of the upper and lower door panels through the coordinated cooperation between the connecting component, the pushing component and the supporting component, thereby saving the space in front of the cab door, solving the problem that the traditional cab door outward flipping trajectory occupies a large space area, making it convenient for the driver to get on and off the vehicle, and can better adapt to the narrow space in front of the loader cab door. It has a simple structure and is easy to operate, and can be expanded to other narrow space occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0015] In the attached picture:

[0016] Figure 1 It is a schematic diagram of the inner structure of the cab door of the utility model;

[0017] Figure 2 It is a schematic diagram of the outer structure of the cab door of the utility model;

[0018] Figure 3 This is a schematic diagram of the cab door of the utility model in an open state;

[0019] Figure 4 It is a structural schematic diagram of the push assembly of the utility model.

[0020] In the figure: 1, door frame, 11, baffle, 2, upper door panel, 3, lower door panel, 301, pull-down handle, 4, connecting assembly, 401, upper hinge plate, 402, lower hinge plate, 403, hinge pin, 5, pushing assembly, 501, door opening handle, 502, initial rotating block, 503, reset spring, 504, pull plate, 505, end rotating block, 506, pushing roller, 507, fixed bracket, 6, supporting assembly, 601, push-up gas spring, 602, push-down gas spring.

[0021] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figures 1 to 4 A convenient-to-use loader cab door shown in the figure comprises a door frame 1, wherein an upper door panel 2 and a lower door panel 3 are arranged in the door frame 1, wherein the upper door panel 2 and the lower door panel 3 are hinged together, wherein the upper end of the upper door panel 2 is hinged to the door frame 1, and both sides of the upper door panel 2 are provided with support components 6 connected to both sides of the door frame 1; the lower end of the lower door panel 3 is slidably connected to the door frame 1, and both sides of the door frame 1 are provided with sliding grooves for sliding the lower end of the lower door panel 3, and a pull-down handle 301 is arranged at the lower part of the lower door panel 3; a pushing component 5 is also arranged on the lower door panel 3, wherein the pushing component 5 comprises a pushing button and a pushing rod, wherein the pushing button is arranged on the lower door panel 3, one end of the pushing rod is connected to the pushing button, and the other end of the pushing rod is fitted with the door frame 1, and in the initial position, the vertical lower door panel 3 generates an offset angle under the action of the pushing button and the pushing rod, and leaves the dead point position of the upper door panel 2 and the lower door panel 3, and the upper door panel 2 and the lower door panel 3 are separated from the fitted and closed state. The door frame of the utility model is connected to the cab frame and serves as a frame to provide support for other components. A movable slide is provided on the door frame. The upper door panel 2 and the lower door panel 3 are connected together through a connecting assembly 4 and can rotate around a hinge point. One end of the upper door panel 2 is connected to the door frame 1 through a hinge point, and the other end is connected to the lower door panel 3. One end of the lower door panel 3 is connected to the upper door panel 2, and the other end is installed in the movable slide on the door frame 1 through a pin shaft. The connecting assembly 4 connects the upper door panel 2 and the lower door panel 3 together in a hinged manner. The pushing assembly 5 is installed on the lower door panel 3 to provide an offset angle when opening the door. The supporting assembly 6 is composed of a plurality of gas springs, and the two ends are respectively connected to the door frame 1 and the upper door panel 2. The utility model adopts a simple and easy-to-control folding method. The upper and lower door panels are automatically folded, turned up, opened and closed through the coordination between the connecting assembly 4, the pushing assembly 5, and the supporting assembly 6, which saves space in front of the cab door, solves the problem that the traditional cab door flipping track occupies a large space area, facilitates the driver to get on and off, and can better adapt to the narrow space in front of the loader cab door.

[0026] like Figure 1 to Figure 2 The illustrated embodiment of a loader cab door that is easy to use, wherein the upper door panel 2 and the lower door panel 3 are hinged together by a connecting assembly 4, wherein the connecting assembly 4 comprises an upper hinge plate 401, a lower hinge plate 402 and a hinge pin 403, wherein the upper hinge plate 401 and the lower hinge plate 402 are respectively arranged on the upper door panel 2 and the lower door panel 3, and the upper hinge plate 401 and the lower hinge plate 402 are connected together by a hinge pin 403. The upper door panel 2 and the lower door panel 3 are tightly fitted to each other in the closed state to ensure sealing.

[0027] like Figures 1 to 3The illustrated embodiment shows a convenient loader cab door, wherein the two ends of the support assembly 6 are respectively hinged on the door frame 1 and the upper door panel 2. The support assembly 6 comprises an upward push gas spring 601 and a downward push gas spring 602, wherein the upper end of the upward push gas spring 601 is hinged to the upper door panel 2, the lower end of the upward push gas spring 601 is hinged to the door frame 1, the lower end of the downward push gas spring 602 is hinged to the upper door panel 2, and the upper end of the downward push gas spring 602 is hinged to the door frame 1. The support assembly 6 of the utility model includes two groups of gas springs, namely an upward push gas spring 601 and a downward push gas spring 602. One end of the two groups of gas springs are hinged and fixed on the door frame 1, wherein the other end of the upward push gas spring 601 is hinged and fixed on the upper side of the upper door panel 2, and the other end of the downward push gas spring 602 is hinged and fixed on the lower side of the upper door panel 2. The support assembly 6 is divided into two groups, each group has two. The function of one group is to push the upper side of the upper door panel 2 to achieve driving when opening the door and to support the upper door panel 2. The function of the other group is to push the lower side of the upper door panel 2 to achieve auxiliary driving and support when opening the door. When closed, the support assembly 6 is in a vertical state, located at the dead point of the mechanism, and has no pushing effect on the upper door panel 2.

[0028] like Figures 1 to 3 The illustrated embodiment of a loader cab door is convenient to use, wherein the door frame 1 is provided with slide grooves on both sides, and the lower end of the lower door panel 3 is provided with pulleys used in conjunction with the slide grooves. The door frame 1 of the utility model is provided with movable slide grooves on both sides to constrain the moving track of the lower door panel 3, and there are also slots for installing gas springs and baffles 11 for pushing the push assembly.

[0029] like Figures 1 to 4A convenient-to-use loader cab door is shown, wherein the pushing assembly 5 includes a door handle 501, an initial rotating block 502, a return spring 503, a pull plate 504, an end rotating block 505, a pushing roller 506 and a fixed bracket 507, wherein the door handle 501 and the fixed bracket 507 are arranged on the lower door panel 3, the center of the initial rotating block 502 is hinged on the fixed bracket 507, one end of the initial rotating block 502 contacts the button on the door handle 501, and the other end of the initial rotating block 502 is hinged to the pull plate 504, the rotation center of the return spring 503 is arranged on the fixed bracket 507, and the return spring 503 is used to reset the initial rotating block 502, one end of the pull plate 504 close to the upper door panel 2 is hinged to the end rotating block 505, the center of the end rotating block 505 is hinged to the lower door panel 3, the pushing roller 506 is arranged on the end rotating block 505, and the pushing roller 506 fits with the door frame 1. The initial rotating block 502 is V-shaped, and the door handle 501 is provided with an automatically reset button. The terminal rotating block 505 is V-shaped, and the door frame 1 is provided with a baffle 11 that fits with the terminal rotating block 505. The pushing assembly 5 of the utility model is installed on the lower door panel 3, wherein the door handle 501 is located at the bottom of the lower door panel 3, and has a pushing button thereon, and the pushing button is used in conjunction with the initial rotating block, and the center hole of the initial rotating block 502 is hinged on the pin of the fixed bracket 507, and the fixed bracket 507 is fixedly installed on the lower door panel 3 to provide support for the initial rotating block 502, and the center of the reset spring 503 is installed on the pin of the fixed bracket 507, and the two ends of the reset spring 503 are bound to the initial rotating block 502 to reset the initial rotating block 502; pull One end of plate 504 is hingedly connected to the initial rotating block 502, and the other end is hingedly connected to the terminal rotating block 505; the center hole of the terminal rotating block 505 is hingedly fixed to the lower door panel 3, and the two ends can rotate around the center hole, and the upper end of the terminal rotating block 505 is hingedly connected to the pushing roller 506; the pushing roller 506 is located on the upper side of the lower door panel 3, and the center of the pushing roller 506 is hinged at one end of the terminal rotating block 505, and can rotate around the hinge point, and in the initial state, it is in contact with the door frame 1 and tangent to it, so as to push the door frame when opening the door, so that the upper and lower door panels are out of the dead point position of the mechanism.

[0030] The specific working principle of the utility model is as follows: when opening the cab door, the driver climbs up the escalator, presses the push button and pulls the door handle 501. The push button pushes one end of the initial rotating block 502, causing the initial rotating block 502 to rotate around the central axis, driving the other end of the initial rotating block 502 to move downward. At the same time, the pull plate 504 connected to the other end of the initial rotating block 502 will also move downward. The movement of the pull plate 504 drives the terminal rotating block 505 to rotate around the center hole. At the same time, the push roller 506 connected to the terminal rotating block 505 will also rotate around the center hole. When rotating, it will push the baffle 11 on the door frame 1 to release the lower door panel. 3, thereby driving the upper door panel 2 to produce an offset angle relative to the door frame 1, and leaving the state of being tightly fitted and closed; at the same time, the movement of the upper door panel 2 will drive the support assembly 6 to leave the vertical state and leave the dead point of the mechanism, producing a double pushing effect on the upper door panel 2, wherein the upper push gas spring 601 exerts a pushing effect on the upper side of the upper door panel, and the lower push gas spring 602 exerts a pushing effect on the lower side of the upper door panel, and the double pushing effect can make the upper door panel 2 quickly rotate upward around the hinge point of the door frame 1, and at the same time, the rotation of the upper door panel 2 drives the pin shaft of the lower door panel 3 to move upward along the moving slide groove on the door frame 1, so that the cab door is opened. When you need to close the cab door, you only need to pull down the handle on the lower door panel 3 to drive the lower pin shaft of the lower door panel 3 to move downward along the movable slide groove on the door frame 1. The upper side of the lower door panel 3 is hinged to the upper door panel 2. The movement of the lower door panel 3 will drive the upper door panel 2 to move downward until the upper and lower door panels 2 return to their initial state and are tightly closed with the door frame 1. Due to the long force arm, the support assembly 6 will also return to its initial position and the driver's door will be closed.

[0031] The easy-to-use loader cab door of the utility model realizes opening and closing of the cab door by a simple and controllable folding method composed of an upper door panel and a lower door panel, and cleverly makes the upper and lower door panels leave the structural dead point position through the pushing effect of the pushing roller and the door frame baffle; the folded opening part is unfolded upward, thereby eliminating the influence of the traditional cab door on the driver during the opening process. The whole device is easy to operate and has strong functionality, and can be expanded to other occasions where the cab is located at a high position and the space in front of the door is narrow; the upper and lower door panels are automatically folded, turned up, opened and closed, saving the space in front of the cab door, solving the problem that the traditional cab door outward turning track occupies a large space area, making it convenient for the driver to get on and off the vehicle, and can better adapt to the narrow space in front of the loader cab door.

[0032] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0033] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

[0034] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A loader cab door that is easy to use, characterized in that: The door frame (1) comprises an upper door panel (2) and a lower door panel (3) arranged inside the door frame (1); the upper door panel (2) and the lower door panel (3) are hinged together; the upper end of the upper door panel (2) is hinged to the door frame (1); both sides of the upper door panel (2) are provided with support components (6) connected to both sides of the door frame (1); the lower end of the lower door panel (3) is slidably connected to the door frame (1); both sides of the door frame (1) are provided with sliding grooves for the lower end of the lower door panel (3) to slide; and the lower part of the lower door panel (3) is provided with a pull-down handle. (301); The lower door panel (3) is also provided with a pushing assembly (5), the pushing assembly (5) comprising a pushing button and a pushing rod, the pushing button being arranged on the lower door panel (3), one end of the pushing rod being connected to the pushing button, and the other end of the pushing rod being in contact with the door frame (1); in the initial position, the vertical lower door panel (3) generates an offset angle under the action of the pushing button and the pushing rod, leaving the dead point position of the upper door panel (2) and the lower door panel (3), and the upper door panel (2) and the lower door panel (3) are separated from the closed state in which they are in contact with each other.

2. A convenient-to-use loader cab door as claimed in claim 1, characterized in that: The upper door panel (2) and the lower door panel (3) are hinged together via a connecting assembly (4); the connecting assembly (4) comprises an upper hinge plate (401), a lower hinge plate (402) and a hinge pin (403); the upper hinge plate (401) and the lower hinge plate (402) are respectively arranged on the upper door panel (2) and the lower door panel (3); the upper hinge plate (401) and the lower hinge plate (402) are connected together via the hinge pin (403).

3. The easy-to-use loader cab door according to claim 1, characterized in that: The upper door panel (2) and the lower door panel (3) fit tightly against each other when in a closed state.

4. The easy-to-use loader cab door according to claim 1, characterized in that: The two ends of the support assembly (6) are respectively hinged on the door frame (1) and the upper door panel (2).

5. The easy-to-use loader cab door according to claim 4, characterized in that: The support assembly (6) comprises an upward push gas spring (601) and a downward push gas spring (602), wherein the upper end of the upward push gas spring (601) is hinged to the upper door panel (2), the lower end of the upward push gas spring (601) is hinged to the door frame (1), the lower end of the downward push gas spring (602) is hinged to the upper door panel (2), and the upper end of the downward push gas spring (602) is hinged to the door frame (1).

6. The easy-to-use loader cab door according to claim 1, characterized in that: Slide grooves are provided on both sides of the door frame (1), and a pulley for use with the slide grooves is provided at the lower end of the lower door panel (3).

7. The easy-to-use loader cab door according to claim 1, characterized in that: The pushing assembly (5) comprises a door handle (501), an initial rotating block (502), a return spring (503), a pull plate (504), an end rotating block (505), a pushing roller (506) and a fixed bracket (507); the door handle (501) and the fixed bracket (507) are arranged on the lower door panel (3); the center of the initial rotating block (502) is hinged on the fixed bracket (507); one end of the initial rotating block (502) contacts a button on the door handle (501); and the other end of the initial rotating block (502) contacts a button on the door handle (501); One end is hinged to the pull plate (504), the rotation center of the reset spring (503) is arranged on the fixed bracket (507), the reset spring (503) is used to reset the initial rotation block (502), the end of the pull plate (504) close to the upper door plate (2) is hinged to the terminal rotation block (505), the center of the terminal rotation block (505) is hinged to the lower door plate (3), the push roller (506) is arranged on the terminal rotation block (505), and the push roller (506) is in contact with the door frame (1).

8. The easy-to-use loader cab door according to claim 7, characterized in that: The initial rotating block (502) is V-shaped, and the door handle (501) is provided with a button capable of automatically resetting.

9. The easy-to-use loader cab door according to claim 7, characterized in that: The terminal rotating block (505) is V-shaped, and the door frame (1) is provided with a baffle (11) that fits the terminal rotating block (505).

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