Rear door hinge device

Abstract

The utility model discloses a rear door hinge device in the technical field of dump trucks, which comprises a bottom plate transversely arranged; the connecting plate is vertically mounted at the top of the bottom plate; the hanging plate is vertically arranged; one end of each outer side plate is hinged to the connecting plate, the other end of each outer side plate is hinged to the hanging plate, and the two outer side plates are vertically and oppositely arranged on the two sides of the connecting plate and the hanging plate; the side vertical plate is vertically mounted on the side, away from the hanging plate, of the bottom plate, and the side vertical plate is connected with the connecting plate; according to the utility model, the overall structure is greatly simplified, and the structural compactness is improved, so that the manufacturing, the production and the assembly are convenient, the labor cost and the material cost are reduced, the overall thickness is thinner, the structural compactness is improved, and the residue of sundries is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dump trucks, in particular to a rear door hinge device. Background Art

[0002] A rear door hinge device is installed between the rear door and the left and right side panels of the mining dump truck to realize the opening and closing of the rear door for unloading.

[0003] The utility model patent with application number CN202122705154.9 discloses an extended rear door hinge device for a mining dump truck. When the rear door is opened and unloading, if earth piles up under the rear door or similar situations occur, the rear door can be further raised, thereby extending the opening range of the rear door and improving the unloading efficiency. In addition, in actual working conditions, gravel, mud and other debris often splash and fly, causing accumulation, smashing, embedding, etc. on the rear door hinge device, and it is not easy to fall off by itself, which can easily lead to deformation, damage, rotation jamming, and jamming of parts. Therefore, it is also provided with a corresponding passage and exit to remove the debris that falls into it.

[0004] However, in order to solve the above problems, the existing rear door hinge device also has relatively complex overall structure, difficult manufacturing, and troublesome production and assembly, which in turn leads to a significant increase in labor costs and material costs. Its production cost is high and cannot meet usage requirements. Utility Model Content

[0005] The utility model aims to provide a rear door hinge device, which solves the technical problem of the complex overall structure of the rear door hinge device in the prior art.

[0006] In a first aspect, the utility model discloses a rear door hinge device, comprising:

[0007] A bottom plate, arranged horizontally;

[0008] A connecting plate, vertically mounted on the top of the base plate;

[0009] Hanging board, vertical setting;

[0010] Two outer panels, one end of each outer panel is hinged to the connecting panel, and the other end is hinged to the hanging panel, and the two outer panels are vertically arranged on both sides of the connecting panel and the hanging panel;

[0011] The side plate is vertically mounted on the side of the base plate away from the hanging plate, and the side plate is connected to the connecting plate.

[0012] The present application hinges one end of the outer panel to the connecting plate and the other end to the hanging plate, and the two outer panels are vertically arranged on both sides of the connecting plate and the hanging plate relative to each other. On the premise of having the functions of removing debris and expanding the opening and closing range of the rear door, the overall structure of the device is greatly simplified and the compactness of the structure is improved, thereby facilitating manufacturing and production and assembly, thereby reducing labor costs and material costs, and having good practical application effects.

[0013] Based on the above technical solution, the embodiment of the present application can also be improved as follows:

[0014] Preferably, there are two side upright plates, and the two side upright plates are relatively installed on both sides of the connecting plate; this solution enables the side upright plates to be fully fixed to both sides of the connecting plate, thereby improving the structural stability and load-bearing capacity of the device.

[0015] Furthermore, a first reinforcing plate is provided between the two side upright plates; this solution is adopted to fix the two side upright plates to play a role of mutual support.

[0016] Preferably, a second reinforcing plate is provided between the two outer side plates; this solution is adopted to fix the two outer side plates, so that they support each other and improve the stability of the structure.

[0017] Preferably, a third reinforcing plate is provided on the side wall of the hanging plate; the adoption of this solution improves the bearing capacity of the hanging plate and avoids accidental breakage due to stress concentration.

[0018] Preferably, it also includes:

[0019] The first connecting member comprises:

[0020] First nut,

[0021] A first pin, the rod of which transversely penetrates the connecting plate and the two outer plates and is threadedly connected to the first nut;

[0022] The second connecting member comprises:

[0023] Second nut,

[0024] The second pin shaft has a rod portion that transversely penetrates the hanging plate and the two outer plates and is threadedly connected to the second nut; this solution ensures the stability of the hinge between the outer plate, the connecting plate and the hanging plate, and facilitates production and assembly, thereby improving the manufacturing efficiency of the device.

[0025] Further, a plurality of first positioning holes are formed on the outer periphery of the first nut, a first limiting hole is formed on the rod portion of the first pin shaft, a plurality of second positioning holes are formed on the outer periphery of the second nut, and a second limiting hole is formed on the rod portion of the second pin shaft;

[0026] The first connecting member further comprises:

[0027] A first latch pin capable of passing through the first positioning hole and plugging into the first limiting hole;

[0028] The second connecting member further comprises:

[0029] The second latch can pass through the second positioning hole and be plugged into the second limiting hole; this solution can prevent the first nut and the first pin shaft as well as the second nut and the second pin shaft from loosening or falling off during use.

[0030] Furthermore, the end of the first pin shaft has a first limiting surface, the outer plate is provided with a first limiting block, and the end of the first pin shaft is fitted with the first limiting block through the first limiting surface;

[0031] The end of the second pin shaft has a second limiting surface, and the outer plate is provided with a second limiting block. The end of the second pin shaft is fitted with the second limiting block through the second limiting surface. The adoption of this scheme can limit the circumferential rotation of the first pin shaft and the second pin shaft after installation, thereby facilitating rotation and tightening.

[0032] Preferably, the hanging plate is an L-shaped plate; adopting this solution improves the stability of the connection between the hanging plate and the rear door and saves materials.

[0033] Through the above technical solution, the utility model achieves the following beneficial effects:

[0034] 1. The present application hinges one end of the outer panel with the connecting panel and the other end with the hanging panel, and the two outer panels are arranged vertically opposite to each other on both sides of the connecting panel and the hanging panel. On the premise of having the functions of removing debris and expanding the opening and closing range of the rear door, the overall structure is greatly simplified and the compactness of the structure is improved, so that it is convenient for manufacturing and production and assembly, thereby reducing labor costs and material costs;

[0035] 2. The present application arranges the connecting plate, hanging plate, outer plate and side upright plate vertically, so that the overall thickness of the device is thinner, the compactness of the structure is improved, and the amount of debris remaining on the top surface of the device can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1It is a structural schematic diagram of a rear door hinge device according to a specific embodiment of the utility model;

[0038] Figure 2 for Figure 1 The structural schematic diagram of the rear door hinge device shown in another viewing angle;

[0039] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0040] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0041] Reference numerals:

[0042] 1. Bottom plate; 2. Connecting plate; 3. Hanging plate; 4. Outer plate; 5. Side plate; 6. First reinforcing plate; 7. Second reinforcing plate; 8. Third reinforcing plate; 9. First connecting piece; 10. Second connecting piece; 11. First limiting block; 12. Second limiting block;

[0043] 91, first nut; 92, first pin; 93, first latch; 101, second nut; 102, second pin; 103, second latch;

[0044] 911, first positioning hole; 921, first limiting hole; 1011, second positioning hole; 1021, second limiting hole. DETAILED DESCRIPTION

[0045] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0046] First of all, it should be noted that in the following description, some directional words, such as "horizontal" and "vertical", etc., are used to clearly explain the technical solution of the utility model. They are all analogous to the normal directions of the components in the rear door hinge device. For example, horizontal placement of the panels is horizontal, and vertical placement is vertical. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the utility model.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installation" 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 direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0049] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0050] Example:

[0051] like Figure 1 and Figure 2 As shown, the embodiment of the present application discloses a rear door hinge device, which is used to realize the opening and closing of the rear door of a dump truck for unloading, and its specific structure includes:

[0052] The bottom plate 1 is arranged horizontally, and the bottom plate 1 is preferably rectangular, welded to the upper part of the rear door pillar of the cargo box side plate, and is kept fixed under normal conditions and used as a support;

[0053] The connecting plate 2 is vertically mounted on the top of the bottom plate 1. The connecting plate 2 is preferably arranged on the center line of the bottom plate 1 to ensure force balance, and is located at one end close to the side plate 5 to reduce material costs;

[0054] The hanging plate 3 is arranged vertically, the thickness direction of the hanging plate 3 is parallel to the rear door, and the side close to the bottom plate 1 is welded to the side of the rear door away from the cargo box, so that the rear door is between the bottom plate 1 and the hanging plate 3, thereby improving the structural stability;

[0055] Two outer panels 4, one end of the outer panel 4 is hinged to the connecting panel 2, and the other end is hinged to the hanging panel 3, and the two outer panels 4 are vertically arranged on both sides of the connecting panel 2 and the hanging panel 3. The two ends of the outer panels 4 are preferably convex arc-shaped, which plays a role in saving materials and guiding the shedding of debris. The bottom surface of the outer panel 4 is preferably concave arc-shaped, which is used to maintain a certain distance with the bottom panel 1 under normal conditions, thereby saving materials and facilitating the discharge of debris falling between the outer panels 4 through this distance;

[0056] The side upright plate 5 is vertically installed on the side of the bottom plate 1 away from the hanging plate 3, and the side upright plate 5 is connected to the connecting plate 2. The side upright plate 5 cooperates with the bottom plate 1 to form a right-angle structure, and the right-angle structure can be snapped and welded with the top surface corner of the rear door column of the cargo box side panel, further improving the stability of the connection between the device and the cargo box side panel.

[0057] It should be noted that since the connecting plate 2, the hanging plate 3, the outer plate 4 and the side plate 5 are all arranged vertically, the overall thickness of the rear door hinge device is relatively thin, which improves the structural compactness of the device and can also reduce the residual debris on the top surface of the device. A through channel is formed between the connecting plate 2 and the hanging plate 3, which facilitates the discharge of debris on the top surface of the device.

[0058] Under the premise of having the functions of removing debris and expanding the opening and closing degree of the rear door, the utility model greatly simplifies the overall structure of the device and improves the compactness of the structure, thereby facilitating manufacturing and production and assembly, thereby reducing labor costs and material costs, and having good practical application effects.

[0059] In one embodiment, if Figure 1 As shown, there are two side upright plates 5 , and the two side upright plates 5 are installed on two sides of the connecting plate 2 opposite to each other.

[0060] Specifically, the side plate 5 is a rectangular plate structure, and the side of the connecting plate 2 away from the hanging plate 3 extends laterally to the side of the bottom plate 1, so that the side plate 5 can be fully fixed to both sides of the connecting plate 2, thereby improving the structural stability and bearing capacity of the device.

[0061] On the basis of the above scheme, in order to improve the structural stability, such as Figure 1 As shown, a first reinforcing plate 6 is provided between the two side upright plates 5, and the first reinforcing plate 6 is used to fix the two side upright plates 5, and plays a role of mutual support, and is preferably arranged vertically to reduce the probability of debris residue. A second reinforcing plate 7 is provided between the two outer side plates 4, and the second reinforcing plate 7 is used to fix the two outer side plates 4, and plays a role of mutual support, thereby improving the stability of the structure. A third reinforcing plate 8 is provided on the side wall of the hanging plate 3, and the third reinforcing plate 8 improves the bearing capacity of the hanging plate 3 to avoid accidental breakage due to stress concentration.

[0062] In this embodiment, in order to improve the stability of the connection between the hanging plate 3 and the rear door, the hanging plate 3 is an L-shaped plate, the vertical section of which is welded to the rear door, and the horizontal section is hinged to the outer plate 4, which saves materials and improves the stability of the connection.

[0063] In yet another embodiment, Figure 1 and Figure 2 As shown, in order to ensure the stability of the hinge connection between the outer plate 4 and the connecting plate 2 and the hanging plate 3, it also includes: a first connecting member 9 and a second connecting member 10.

[0064] The first connecting member 9 specifically comprises:

[0065] A first nut 91, the outer periphery of which is preferably a regular hexagon for easy tightening;

[0066] The first pin shaft 92 has a rod portion that transversely penetrates the connecting plate 2 and the two outer plates 4 and is then threadedly connected to the first nut 91 .

[0067] The second connecting member 10 specifically comprises:

[0068] A second nut 101, the outer periphery of which is preferably a regular hexagon for easy tightening;

[0069] The second pin shaft 102 has a rod portion that transversely penetrates the hanging plate 3 and the two outer plates 4 and is then threadedly connected to the second nut 101 .

[0070] Specifically, circular through holes matching the first pin shaft 92 and the second pin shaft 102 are provided on the connecting plate 2, the hanging plate 3 and the outer plate 4 for their passage; in this way, the stability of the hinge is improved, and the production and assembly are facilitated, thereby improving the manufacturing efficiency of the device.

[0071] On the basis of the above scheme, Figure 3 and Figure 4 As shown, in order to prevent the first nut 91 and the first pin 92 as well as the second nut 101 and the second pin 102 from loosening or falling off during use, the following settings are also made:

[0072] A plurality of first positioning holes 911 are provided on the outer periphery of the first nut 91, and a first limiting hole 921 is provided on the rod portion of the first pin shaft 92. The number of the first positioning holes 911 is preferably six and they are respectively located on each side surface of the first nut 91, and the first positioning holes 911 are connected to the end surface of the first nut 91 to facilitate alignment with the first limiting holes 921. The first limiting holes 921 are through holes, which facilitate the first latch 93 to pass through and be plugged into the first positioning hole 911 on the other side, thereby improving the limiting locking effect.

[0073] The first connecting member 9 further includes: a first latch 93, which can pass through the first positioning hole 911 and be plugged into the first limiting hole 921. After being plugged in, the first latch 93 can limit the circumferential rotation of the first nut 91, thereby preventing it from loosening, and is easy to disassemble and operate;

[0074] A plurality of second positioning holes 1011 are provided on the outer periphery of the second nut 101, and a second limiting hole 1021 is provided on the rod portion of the second pin shaft 102. The number of the second positioning holes 1011 is preferably six and they are respectively located on each side surface of the second nut 101, and the second positioning holes 1011 are communicated with the end surface of the second nut 101 for facilitating alignment with the second limiting holes 1021. The second limiting holes 1021 are through holes for facilitating the second latch 103 to pass through and be plugged into the second positioning hole 1011 on the other side, thereby improving the limiting locking effect.

[0075] The second connecting member 10 also includes: a second latch 103, which can pass through the second positioning hole 1011 and be plugged into the second limiting hole 1021. After being plugged in, the second latch 103 can limit the circumferential rotation of the second nut 101, thereby preventing loosening. It is easy to disassemble and assemble and is convenient to operate.

[0076] In this embodiment, if Figure 1 As shown, in order to facilitate the disassembly and assembly of the first connecting member 9 and the second connecting member 10, the following settings are also performed:

[0077] The end of the first pin shaft 92 has a first limiting surface, and the outer plate 4 is provided with a first limiting block 11. The end of the first pin shaft 92 is fitted with the first limiting block 11 through the first limiting surface. This method can limit the circumferential rotation of the first pin shaft 92, making it convenient to rotate and tighten the first nut 91 and the first pin shaft 92.

[0078] The end of the second pin shaft 102 has a second limiting surface, and a second limiting block 12 is provided on the outer plate 4. The end of the second pin shaft 102 is fitted with the second limiting block 12 through the second limiting surface. This method can limit the circumferential rotation of the second pin shaft 102, making it convenient to rotate and tighten the second nut 101 and the second pin shaft 102.

[0079] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A rear door hinge device, characterized in that: include: A bottom plate (1) is arranged horizontally; A connecting plate (2) is vertically mounted on the top of the base plate (1); A hanging plate (3), arranged vertically; Two outer panels (4), one end of each outer panel (4) being hinged to the connecting panel (2), and the other end of each outer panel (4) being hinged to the hanging panel (3), and the two outer panels (4) being arranged vertically opposite to each other on both sides of the connecting panel (2) and the hanging panel (3); The side upright plate (5) is vertically mounted on a side of the bottom plate (1) away from the hanging plate (3), and the side upright plate (5) is connected to the connecting plate (2).

2. The rear door hinge device according to claim 1, characterized in that: There are two side upright plates (5), and the two side upright plates (5) are mounted opposite to each other on two sides of the connecting plate (2).

3. The rear door hinge device according to claim 2, characterized in that: A first reinforcing plate (6) is provided between the two side upright plates (5).

4. The rear door hinge device according to claim 1, characterized in that: A second reinforcing plate (7) is provided between the two outer plates (4).

5. The rear door hinge device according to claim 1, characterized in that: A third reinforcing plate (8) is provided on the side wall of the hanging plate (3).

6. The rear door hinge device according to claim 1, characterized in that: Also includes: The first connecting member (9) comprises: The first nut (91), A first pin (92), the rod portion of which transversely penetrates the connecting plate (2) and the two outer plates (4) and is then threadedly connected to the first nut (91); The second connecting member (10) comprises: The second nut (101), The second pin shaft (102) has a rod portion that transversely penetrates the hanging plate (3) and the two outer plates (4) and is then threadedly connected to the second nut (101).

7. The rear door hinge device according to claim 6, characterized in that: A plurality of first positioning holes (911) are formed on the outer circumference of the first nut (91), a first limiting hole (921) is formed on the rod portion of the first pin shaft (92), a plurality of second positioning holes (1011) are formed on the outer circumference of the second nut (101), and a second limiting hole (1021) is formed on the rod portion of the second pin shaft (102); The first connecting member (9) further comprises: A first latch pin (93) capable of passing through the first positioning hole (911) and being plugged into the first limiting hole (921); The second connecting member (10) further comprises: The second latch pin (103) can pass through the second positioning hole (1011) and be plugged into the second limiting hole (1021).

8. The rear door hinge device according to claim 6, characterized in that: The end of the first pin shaft (92) has a first limiting surface, the outer plate (4) is provided with a first limiting block (11), and the end of the first pin shaft (92) is in contact with the first limiting block (11) via the first limiting surface; The end of the second pin shaft (102) has a second limiting surface, the outer plate (4) is provided with a second limiting block (12), and the end of the second pin shaft (102) is fitted with the second limiting block (12) via the second limiting surface.

9. The rear door hinge device according to claim 1, characterized in that: The hanging plate (3) is an L-shaped plate.

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