Self-return hinged door structure and mining dump truck

Abstract

The utility model discloses a self-return hinge door structure and a mining dump truck. The self-return hinge door structure comprises a door assembly, at least one self-return hinge structure and a locking component, the door assembly is arranged between the vertical rod I and the vertical rod II; at least one self-return hinge structure is installed between the vertical rod I and the door assembly, and the door assembly can rotate around the self-return hinge structure to achieve opening and closing of the door assembly. The locking component is mounted between the door assembly and the vertical rod II, the opened door assembly can automatically return to the locking component under the action of the self-return hinge structure, and the door assembly is locked on the vertical rod II through the locking component. Compared with the problems that a rubber strip or spring type self-return structure adopted by an existing self-return door of a mining dump truck is unreliable and short in service life, the self-return hinged door has the advantages that stress is unbalanced when the door is opened by the aid of a special-shaped edge rolling hinge structure, the self-return function is realized by the aid of gravity of a door assembly, and the self-return hinged door is stable, reliable and long in service life. The service life is long.

Description

Technical Field

[0001] The utility model relates to a self - reset hinge door structure, belonging to the technical field of mining dump trucks. Background Technique

[0002] The body of a mining dump truck is large in size, including a cab, a power transmission system, etc. There are shell entrances and exits for the driver to reach various positions, including a basic entrance, a spare entrance, and a maintenance entrance. A shell door is set at each entrance, generally welded by components such as seamless steel pipes, and there is no self - reset function. After the driver passes through the door, he needs to manually reset and close it. The generally self - reset doors in the industry generally rely on the flexibility of materials such as rubber strips or springs to achieve self - reset through elastic deformation. However, the service life of such materials is short, and the elastic coefficient will change after long - term work. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the utility model provides a self - reset hinge door structure with novel structure, stability and reliability.

[0004] The utility model is realized according to the following technical solutions:

[0005] In a first aspect, the utility model provides a self - reset hinge door structure applied to a mining dump truck, including a door assembly, at least one self - reset hinge structure, and a locking component; the door assembly is arranged between vertical rod Ⅰ and vertical rod Ⅱ; the self - reset hinge structure includes connecting component A, connecting component B, and a pin shaft; connecting component A is fixedly connected to the vertical rod Ⅰ; connecting component B is fixedly connected to the door assembly; the pin shaft is used to connect connecting component A and connecting component B in series. When the door assembly is in the closed state, the inclined surfaces of connecting component A and connecting component B that face each other are in contact. After the door assembly rotates around the pin shaft and opens, the opened door assembly self - resets to the closed state under its own weight and the action of the opposite inclined surfaces; the locking component is installed between the door assembly and the vertical rod Ⅱ and is used to lock the door assembly in the closed state on the vertical rod Ⅱ.

[0006] In some embodiments, connecting component A includes mounting plate A and hinge A, mounting plate A is fixed on vertical rod Ⅰ, and hinge A is fixed on mounting plate A; connecting component B includes mounting plate B and hinge B, mounting plate B is fixed on the door assembly, and hinge B is fixed on mounting plate B; the pin shaft assembles hinge A and hinge B together to form a hinge, and the self - reset function of the door assembly is realized through the inclined surfaces of hinge A and hinge B that face each other.

[0007] In some embodiments, the hinge A is composed of a connecting plate A and a sleeve A which is fixed thereto and has an opening facing downward; the connecting plate A is fixed to the mounting plate A, and the opening surface of the sleeve A is an inclined surface facing downward; the hinge B is composed of a connecting plate B and a sleeve B which is fixed thereto and has an opening facing upward; the connecting plate B is fixed to the mounting plate B, and the opening surface of the sleeve B is an inclined surface facing upward; the upper part of the pin shaft is sleeved in the sleeve A, the lower part of the pin shaft is sleeved in the sleeve B, and the inclined surfaces of the sleeve A and the sleeve B are in contact with each other, and the self-return function of the door assembly is realized through the relative rotation between the sleeve A and the sleeve B.

[0008] In some embodiments, both the mounting plate A and the mounting plate B are U-shaped plates. The mounting plate A and the mounting plate B both weld the two side vertical plates to the corresponding vertical rods. There is a gap between the middle vertical plate of the mounting plate A and the mounting plate B and the corresponding vertical rod. A plurality of nuts welded to the inner side surface of the middle vertical plate are provided in this gap, and the area of the middle vertical plate at the nut is set as a through hole; a plurality of mounting holes corresponding to the through holes one by one are provided on both the connecting plate A and the connecting plate B, and the connecting plate A is fixed to the mounting plate A and the connecting plate B is fixed to the mounting plate B by the cooperation of screws and nuts.

[0009] In some embodiments, a guardrail seat is welded to the bottom surface of each of the vertical rod Ⅰ and the vertical rod Ⅱ, and the guardrail seat is fixed to the threaded seat on the vehicle operation platform through fasteners.

[0010] In some embodiments, the locking component is composed of a latch seat and a latch; the latch seat is fixed to the vertical rod Ⅱ, and the latch is vertically inserted into the latch seat; when the door assembly is in the closed state, the locking plate of the door assembly fits on the vertical rod Ⅱ below the latch seat, and after the latch is inserted, the locking plate is limited between the latch and the vertical rod Ⅱ.

[0011] In some embodiments, the door assembly is composed of an n-shaped bent pipe, at least one horizontal pipe welded in the n-shaped bent pipe, and a locking plate welded on the n-shaped bent pipe and used for fitting on the vertical rod Ⅱ to play a locking role.

[0012] In some embodiments, a kick plate is welded to the bottom of the n-shaped bent pipe.

[0013] In some embodiments, the number of the self-return hinge structures is two. One self-return hinge structure is located at the upper part of the gap between the vertical rod Ⅰ and the door assembly, and the other self-return hinge structure is located at the lower part of the gap between the vertical rod Ⅰ and the door assembly.

[0014] In a second aspect, the present invention provides a mining dump truck equipped with the above self-return hinge door structure.

[0015] Advantageous effects of the present invention:

[0016] Compared with the unreliable rubber strip or spring self - returning structure with short service life used in the existing self - returning doors of mining dump trucks, the self - returning hinge door in the present utility model relies on the special - shaped coiled hinge structure to make the force unbalanced when the door is in the open state, and utilizes the gravity of the door assembly to achieve the self - returning function, which is stable, reliable, convenient to use and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings, as a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the drawings described below are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0018] In the drawings:

[0019] Figure 1 is a schematic structural diagram of the self - returning hinge door of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the self - returning hinge structure of the present utility model.

[0021] Reference numerals in the drawings: 1, mounting assembly; 2, self - returning hinge structure; 3, door assembly; 4, latch seat; 5, hinge A; 6, hinge B; 7, pin shaft; 8, mounting plate A; 9, mounting plate B; 10, vertical rod I; 11, guardrail seat; 12, seamless steel pipe; 13, locking plate; 14, kick plate; 15, latch; 16, vertical rod II.

[0022] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] As Figure 1 、 Figure 2 shown, a self - reset hinge door structure is applied to a mining dump truck, which includes an installation component 1, a door assembly 3, at least one self - reset hinge structure 2, and a locking component; the installation component 1 includes a vertical rod I 10 and a vertical rod II 16; the door assembly 3 is arranged between the vertical rod I 10 and the vertical rod II 16; the self - reset hinge structure 2 includes a connecting component A, a connecting component B, and a pin shaft 7; the connecting component A is fixedly connected to the vertical rod I 10; the connecting component B is fixedly connected to the door assembly 3; the pin shaft 7 is used to connect the connecting component A and the connecting component B in series. When the door assembly 3 is in the closed state, the opposite inclined surfaces of the connecting component A and the connecting component B are in contact with each other. After the door assembly 3 rotates around the pin shaft 7 and opens, the opened door assembly 3 self - resets to the closed state under its own weight and the action of the opposite inclined surfaces; the locking component is installed between the door assembly 3 and the vertical rod II 16 and is used to lock the door assembly 3 in the closed state on the vertical rod II 16.

[0027] The following further describes the above - mentioned connecting component A and connecting component B.

[0028] As Figure 1 、 Figure 2 shown, the connecting component A includes a mounting plate A 8 and a hinge A 5. The mounting plate A 8 is fixed on the vertical rod I 10, and the hinge A 5 is fixed on the mounting plate A 8; the connecting component B includes a mounting plate B 9 and a hinge B 6. The mounting plate B 9 is fixed on the door assembly 3, and the hinge B 6 is fixed on the mounting plate B 9; the pin shaft 7 assembles the hinge A 5 and the hinge B 6 together to form a hinge, and the self - reset function of the door assembly 3 is realized through the opposite inclined surfaces of the hinge A 5 and the hinge B 6.

[0029] It should be noted that as Figure 1As shown, the pin shaft 7 can only be installed at the outer ends of hinge A5 and hinge B6, and cannot be installed at the inner ends of hinge A5 and hinge B6.

[0030] For a further solution, continue to refer to Figure 2 As shown, hinge A5 is composed of a connecting plate A and a sleeve A fixedly attached thereto with an opening facing downward; the connecting plate A is fixedly attached to mounting plate A8, and the opening surface of sleeve A is an inclined surface facing downward; hinge B6 is composed of a connecting plate B and a sleeve B fixedly attached thereto with an opening facing upward; the connecting plate B is fixedly attached to mounting plate B9, and the opening surface of sleeve B is an inclined surface facing upward; the upper part of pin shaft 7 is sleeved in sleeve A, the lower part of pin shaft 7 is sleeved in sleeve B, and the inclined surfaces of sleeve A and sleeve B are in contact with each other, and the self-return function of door assembly 3 is realized through the relative rotation between sleeve A and sleeve B.

[0031] The specific working process is as follows: when opening the door, the operator pushes door assembly 3 by hand, overcoming the frictional force generated between the two inclined surfaces, so that hinge A5 moves upward along the inclined surface of hinge B6, and at this time the door opens; after the operator's hand leaves door assembly 3, hinge A5 is in an unstable state, and automatically moves downward along the inclined surface of hinge B6 under the action of the gravity of door assembly 3 until the locking plate 13 is in contact with the vertical rod II 16, and door assembly 3 reaches the locked position, and at this time the door closes, thereby realizing the self-return function.

[0032] For a further solution, continue to refer to Figure 2 As shown, both mounting plate A8 and mounting plate B9 are U-shaped plates. Both mounting plate A8 and mounting plate B9 weld the two side plates to the corresponding vertical rods, and there is a gap between the middle plate of mounting plate A8 and mounting plate B9 and the corresponding vertical rod. A plurality of nuts welded to the inner side surface of the middle plate are provided in this gap, and the area of the middle plate where the nuts are located is set as a through hole; a plurality of mounting holes corresponding to the through holes one by one are provided on both connecting plate A and connecting plate B, and connecting plate A is fixed to mounting plate A8 and connecting plate B is fixed to mounting plate B9 by matching the screws with the nuts.

[0033] For a further solution, as Figure 1 shown, the mounting assembly 1 further includes a guardrail base 11. A guardrail base 11 is welded to the bottom surface of both vertical rod I 10 and vertical rod II 16, and the guardrail base 11 is fixed to the threaded base on the vehicle operation platform through fasteners such as bolts and washers.

[0034] The above-mentioned locking components will be further described below.

[0035] As Figure 1As shown, the locking component consists of a latch seat 4 and a latch 15; the latch seat 4 is fixed on the vertical rod Ⅱ 16, and the latch 15 is vertically inserted into the latch seat 4; when the door assembly 3 is in a closed state, the locking plate 13 of the door assembly 3 is attached to the vertical rod Ⅱ 16 located below the latch seat 4, and after the latch 15 is inserted, the locking plate 13 is limited between the latch 15 and the vertical rod Ⅱ 16 to prevent the door from opening due to bumps and vibrations when the vehicle is driving.

[0036] The above-mentioned door assembly is further described below.

[0037] like Figure 1 As shown, the door assembly 3 is composed of an n-shaped elbow, at least one horizontal tube welded in the n-shaped elbow, and a locking plate 13 welded on the n-shaped elbow and used to be attached to the vertical column II 16 for locking. Among them, the n-shaped elbow and the horizontal tube are both made of seamless steel pipe 12. When the door reaches the designed closed position, the locking plate 13 is attached to the vertical column II 16 for locking, and the structure is simple, safe and stable.

[0038] For further solutions, please refer to Figure 1 As shown, a skirting plate 14 is welded to the bottom of the n-type elbow.

[0039] For further solutions, please refer to Figure 1 As shown, there are two self-returning hinge structures 2, one of which is located at the upper part of the gap between the upright pole Ⅰ and the door assembly, and the other self-returning hinge structure 2 is located at the lower part of the gap between the upright pole Ⅰ10 and the door assembly 3.

[0040] In summary, compared with the existing self-return doors of mining dump trucks that use rubber strips or spring-type self-return structures that are unreliable and have a short lifespan, the self-return hinged door in the utility model relies on a special-shaped rolled hinge structure to make the force unbalanced when the door is open, and uses the gravity of the door assembly to achieve the self-return function, which is stable and reliable, easy to use and has a long lifespan.

[0041] The mining dump truck provided by the utility model is described below. The mining dump truck described below and the self-returning hinged door structure described above can be referred to each other.

[0042] The utility model provides a mining dump truck, which may include a self-returning hinged door structure as described in any one of the above embodiments.

[0043] The beneficial effects achieved by the mining dump truck provided by the utility model are consistent with the beneficial effects achieved by the self-returning hinged door structure provided by the utility model, and will not be described in detail here.

[0044] In the specification provided herein, a large number of specific details are set forth. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures and technologies have not been shown in detail so as not to obscure the understanding of this specification.

[0045] In addition, those skilled in the art will understand that although some of the embodiments described herein include certain features contained in other embodiments but not others, the combinations of the features of different embodiments are equally intended to be within the scope of protection of the present invention and form 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 this application.

[0046] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed as above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to the equivalent embodiments of the equivalent changes by using the technical content prompted above. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A self-return hinge door structure is applied to a mining dump truck, characterized in that, Comprising: A door assembly disposed between vertical rod Ⅰ and vertical rod Ⅱ; At least one self - returning hinge structure, comprising: A connecting component A fixedly connected to the vertical rod Ⅰ; A connecting component B fixedly connected to the door assembly; A pin shaft for connecting the connecting component A and the connecting component B in series. When the door assembly is in the closed state, the inclined surfaces of the connecting component A and the connecting component B facing each other are in contact. After the door assembly rotates around the pin shaft and opens, the opened door assembly self - returns to the closed state under its own weight and the action of the opposite inclined surfaces; A locking component installed between the door assembly and the vertical rod Ⅱ for locking the door assembly in the closed state on the vertical rod Ⅱ.

2. The self - returning hinge door structure according to claim 1, wherein: The connecting component A includes a mounting plate A and a hinge A. The mounting plate A is fixed on the vertical rod Ⅰ, and the hinge A is fixed on the mounting plate A; The connecting component B includes a mounting plate B and a hinge B. The mounting plate B is fixed on the door assembly, and the hinge B is fixed on the mounting plate B; The pin shaft assembles the hinge A and the hinge B together to form a hinge, and realizes the self - returning function of the door assembly through the inclined surfaces of the hinge A and the hinge B facing each other.

3. The self - returning hinge door structure according to claim 2, wherein: The hinge A is composed of a connecting plate A and a sleeve A fixedly connected thereto and opening downward; the connecting plate A is fixedly connected to the mounting plate A, and the opening surface of the sleeve A is a downward inclined surface; The hinge B is composed of a connecting plate B and a sleeve B fixedly connected thereto and opening upward; the connecting plate B is fixedly connected to the mounting plate B, and the opening surface of the sleeve B is an upward inclined surface; The upper part of the pin shaft is sleeved in the sleeve A, and the lower part of the pin shaft is sleeved in the sleeve B, and the inclined surfaces of the sleeve A and the sleeve B are in contact. The self - returning function of the door assembly is realized through the relative rotation between the sleeve A and the sleeve B.

4. The self - returning hinge door structure according to claim 3, wherein: Both the mounting plate A and the mounting plate B are U - shaped plates. Both the mounting plate A and the mounting plate B weld the two side vertical plates to the corresponding vertical rods. There is a gap between the middle vertical plate of the mounting plate A and the corresponding vertical rod and between the middle vertical plate of the mounting plate B and the corresponding vertical rod. In this gap, a plurality of nuts welded to the inner side surface of the middle vertical plate are provided, and the area of the middle vertical plate at the nut is set as a through - hole; A plurality of mounting holes corresponding to the through - holes one by one are provided on both the connecting plate A and the connecting plate B. The connecting plate A is fixed on the mounting plate A and the connecting plate B is fixed on the mounting plate B by screws cooperating with the nuts.

5. The self - returning hinge door structure according to claim 1, wherein: A guardrail base is welded to the bottom surface of both the vertical rod Ⅰ and the vertical rod Ⅱ, and the guardrail base is fixed to the threaded base on the vehicle operation platform through fasteners.

6. The self - returning hinge door structure according to claim 1, wherein: The locking component consists of a latch seat and a latch; the latch seat is fixed on the vertical rod II, and the latch is vertically inserted into the latch seat; when the door assembly is in the closed state, the locking plate of the door assembly fits on the vertical rod II below the latch seat, and after inserting the latch, the locking plate is limited between the latch and the vertical rod II.

7. The self - returning hinge door structure according to claim 1, wherein: The door assembly consists of an n - shaped bent pipe, at least one horizontal pipe welded in the n - shaped bent pipe, and a locking plate welded on the n - shaped bent pipe and used for fitting on the vertical rod II to play a locking role.

8. The self - returning hinge door structure according to claim 7, wherein: A kick plate is welded at the bottom of the n - shaped bent pipe.

9. The self - returning hinge door structure according to claim 1, wherein: The number of the self - returning hinge structures is two. One self - returning hinge structure is located at the upper part of the gap between the vertical rod I and the door assembly, and the other self - returning hinge structure is located at the lower part of the gap between the vertical rod I and the door assembly.

10. A mining dump truck, wherein: It is equipped with the self - returning hinge door structure according to any one of claims 1 to 9.

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