Pin shaft connecting structure and dumper rear door locking device

Abstract

The utility model belongs to the technical field of engineering vehicles, and particularly relates to a pin shaft connecting structure and a dumper rear door locking device, which comprise a locking nut, a locking bolt, a lock nut and a lock bolt. According to the utility model, the locknut and the lockbolt are arranged and are sunk into the accommodating groove of the locknut, so that the locknut and the lockbolt can be stably connected and are not easy to fall off in a vibrating or bumpy working environment, and the risk of damage and even breakage caused by material collision is effectively avoided; in addition, the LED lamp has the advantages of being simple and compact in structure and convenient to disassemble and assemble, thereby not only being beneficial to production and processing, but also reducing installation difficulty.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the engineering vehicle technical field, concretely relates to a pin shaft connecting structure and self -discharging car rear door locking device. BACKGROUND

[0002] In the mining and construction industry, mining dump trucks have been widely used in the transportation of materials such as ore and sand. The rear door locking device is usually equipped between the rear door and the bottom plate of such vehicles, for example, the utility model patent with the patent number CN202122747931.6 and the patent name "Rear door locking device of mining dump truck" shown. This design aims to automatically open the rear door when unloading to facilitate the smooth dumping of materials; and automatically lock the rear door when transporting to prevent material leakage and ensure transportation safety.

[0003] However, in actual application, there is still a significant problem in the design of the current rear door locking device of the dump truck; specifically, since the rear door locking device is arranged below the rear door, it is easily directly impacted by the material during the unloading process. Over time, this continuous impact will cause the pin shaft and its related accessories that fix the rear door lock hook to be frequently damaged or even broken. This problem not only causes the rear door lock hook to fall off and be lost, thereby affecting the normal operation of the dump truck, but also significantly increases the maintenance cost of the vehicle and brings certain safety hazards. Therefore, how to improve the rear door locking device of the mining dump truck to improve its durability and safety has become a technical problem to be solved. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a pin shaft connecting structure, which solves the technical problem of low strength and reliability of the pin shaft connecting structure in the prior art, thereby being easily broken.

[0005] In a first aspect, the utility model discloses a pin shaft connecting structure, which comprises:

[0006] A locking nut is provided with a plurality of accommodation grooves arranged around the axis and radially penetrating;

[0007] A locking bolt comprises

[0008] A first head,

[0009] A first screw rod is connected to the first head at one end, and the other end is provided with a radial through-hole and is threadedly connected to the locking nut;

[0010] A lock nut is sunk and clamped in one of the accommodation grooves;

[0011] A lock bolt comprises

[0012] A second head is sunk in another accommodation groove,

[0013] The second screw rod is connected with the second head at one end and is inserted into the accommodating groove through the insertion hole and is screwed with the lock nut at the other end.

[0014] The lock nut and the lock bolt are arranged and sunk into the accommodating groove of the lock nut, so that the lock nut and the lock bolt can be firmly connected and are not easy to fall off in a vibrating or jolting working environment, the risk of damage or even breakage caused by material impact is effectively avoided, the service life is prolonged and the reliability is enhanced, the structure is simple and compact, and the lock nut and the lock bolt are easy to disassemble and assemble, so that the production and processing are facilitated and the installation difficulty is reduced.

[0015] Based on the above technical solutions, the scheme of the present application can be further improved as follows:

[0016] Preferably, the lock nut is hexagonal, and the accommodating grooves correspond to the side surfaces of the lock nut one by one. This scheme improves the disassembly and assembly efficiency, ensures firm connection, and makes the distribution of the accommodating grooves more uniform, thereby facilitating stable installation, improving the structural strength, and ensuring reliability and durability.

[0017] Preferably, the lock nut is hexagonal, and the accommodating grooves are rectangular. This scheme realizes firm connection and efficient locking, and improves the structural strength and stability, thereby prolonging the service life and ensuring firm connection.

[0018] Preferably, the first head is hexagonal. This scheme improves the installation and disassembly efficiency, and also enhances the structural strength, so that it is not easy to be damaged when bearing a large torque.

[0019] Preferably, the second head is an internal hexagonal cylinder. This scheme improves the installation portability and structural strength of the lock bolt, enhances the structural stability and reliability, and improves the installation efficiency and smoothness.

[0020] In a second aspect, the utility model discloses a self-unloading vehicle rear door locking device, including the pin shaft connection structure of any one of the above.

[0021] Through the above technical scheme, the utility model realizes the following beneficial effects:

[0022] 1. The lock nut and the lock bolt are arranged and sunk into the accommodating groove of the lock nut, so that the lock nut and the lock bolt can be firmly connected and are not easy to fall off in a vibrating or jolting working environment, the risk of damage or even breakage caused by material impact is effectively avoided, the service life is prolonged and the reliability is enhanced, the structure is simple and compact, and the lock nut and the lock bolt are easy to disassemble and assemble, so that the production and processing are facilitated and the installation difficulty is reduced.

[0023] 2. The application can effectively prevent the loosening of the lock nut when subjected to external force by sinking and clamping the lock nut in the accommodating groove, thereby improving the connection stability. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 The structure diagram of the pin shaft connection structure described in the specific embodiments of the present application is shown in the figure.

[0026] Figure 2 The structure diagram of the lock nut in the pin shaft connection structure shown in the figure is shown in the figure. Figure 1

[0027] Figure 3 The structure diagram of the lock bolt in the pin shaft connection structure shown in the figure is shown in the figure. Figure 1

[0028] Figure 4 The structure diagram of the lock nut in the pin shaft connection structure shown in the figure is shown in the figure. Figure 1

[0029] Figure 5 The structure diagram of the lock bolt in the pin shaft connection structure shown in the figure is shown in the figure. Figure 1

[0030] Figure 6 The structure diagram of the self-unloading vehicle rear door locking device described in the specific embodiments of the present application is shown in the figure.

[0031] Explanation of reference signs:

[0032] 1. Lock nut; 11. Accommodating groove;

[0033] 2. Lock bolt; 21. First head; 22. First screw; 221. Insert hole;

[0034] 3. Lock nut;

[0035] 4. Lock bolt; 41. Second head; 42. Second screw. DETAILED DESCRIPTION

[0036] ​​​​The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0037] First, it should be noted that some directional terms used in the following description to clearly illustrate the technical solution of this utility model, such as the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," are all derived from the normal orientation of the components in the pin connection structure and the rear door locking device of the dump truck. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0041] Example:

[0042] like Figures 1 to 5 As shown in the figure, this application discloses a pin connection structure for hinged connection between the lock hook seat and the lock hook, and for hinged connection between the chain and the lock hook. Its specific structure includes: a locking nut 1, a locking bolt 2, an anti-loosening nut 3, and an anti-loosening bolt 4.

[0043] The outer end face of the locking nut 1 is provided with multiple receiving grooves 11 arranged around the axis and radially through it. These receiving grooves 11 provide installation positions for the anti-loosening nut 3 and the anti-loosening bolt 4.

[0044] The locking bolt 2 comprises a first head 21 and a first screw rod 22, one end of the first screw rod 22 is connected with the first head 21, and the other end is provided with a radial through insertion hole 221 and is threadedly connected with the locking nut 1.

[0045] Specifically, the first head 21 is used to provide a rotating torque to screw the locking bolt 2 into the locking nut 1, and the insertion hole 221 is matched with the second screw rod 42 of the locking bolt 4, thereby improving the stability of the limiting.

[0046] The locking nut 3 is sunk and clamped in a containing groove 11, which can effectively prevent it from loosening when subjected to external force and avoid the situation of being broken by materials.

[0047] The locking bolt 4 comprises a second head 41 and a second screw rod 42, wherein the second head 41 is sunk in another containing groove 11, one end of the second screw rod 42 is connected with the second head 41, and the other end is inserted into a containing groove 11 through the insertion hole 221 and is threadedly connected with the locking nut 3.

[0048] Specifically, the second head 41 is used to provide a rotating torque to screw the locking bolt 4 into the locking nut 3, and the design of being sunk in another containing groove 11 avoids the situation of being broken by materials.

[0049] The above technical scheme has the following installation mode:

[0050] The first screw rod 22 of the locking bolt 2 is threadedly connected with the locking nut 1 after penetrating through two to-be-connected members, then the locking bolt 2 is tightened through the first head 21, and the two ends of the insertion hole 221 are respectively aligned with a containing groove 11;

[0051] The locking nut 3 is sunk and clamped in a containing groove 11, and then the second screw rod 42 of the locking bolt 4 is inserted into the insertion hole 221 from another containing groove 11 and is threadedly connected with the locking nut 3 after penetrating out of the insertion hole 221, finally the locking bolt 4 is tightened through the second head 41, and the second head 41 is sunk in the containing groove 11.

[0052] The utility model discloses a locking nut 1 and a locking bolt 2 can be stably connected and not easy to fall off in the vibrating or jolting working environment, and the risk of damage or even breakage caused by material impact is effectively avoided, thereby prolonging the service life and enhancing the reliability, and the structure is simple and compact and convenient to disassemble and assemble, thereby being beneficial to production and processing and reducing the installation difficulty.

[0053] In some embodiments, as shown in Figure 2 The locking nut 1 is hexagonal, and the containing groove 11 corresponds to the side surface of the locking nut 1 one by one.

[0054] Specifically, the lock nut 1 is designed in a hexagonal shape, facilitating rotation operation using a wrench or the like, improving the disassembly and assembly efficiency, and enhancing the structural strength to ensure firm connection.

[0055] Specifically, the lock nut 1 is designed in a hexagonal shape, facilitating rotation operation using a wrench or the like, improving the disassembly and assembly efficiency, and enhancing the structural strength to ensure firm connection.

[0056] In some embodiments, as shown in Figs. 1 and 2, the lock nut 3 is hexagonal, and the receiving groove 11 is rectangular. Figure 2 Figure 3 Specifically, the lock nut 3 is designed in a hexagonal shape, enhancing the structural stability; the receiving groove 11 is designed in a rectangular shape, which can cooperate with the hexagonal lock nut 3, thereby ensuring that the lock nut 3 can be stably sunk and clamped in the receiving groove 11 and is not easy to loosen or fall off, and making the entire connection structure more compact and stable.

[0057] Through the above arrangement, stable connection and efficient anti-loosening are achieved, and the structural strength and stability are improved, thereby prolonging the service life and ensuring firm connection.

[0058] In some embodiments, as shown in Figs. 1 and 2, the first head 21 is hexagonal.

[0059] By designing the first head 21 in a hexagonal shape, not only is it convenient to use a standard hexagonal wrench for rotation and tightening operation, thereby improving the installation and disassembly efficiency, but also the structural strength of the first head 21 is enhanced, so that it is not easy to be damaged when bearing a large torque. Figure 2

[0060] Firstly, by designing the second head 41 in an internal hexagonal cylindrical shape, the lock bolt 4 can be rotated and tightened using an internal hexagonal wrench or an internal hexagonal sleeve, which is not only simple to operate, but also can effectively prevent the wrench from slipping, ensuring the accuracy and safety during installation.

[0061] Secondly, the internal hexagonal structure can bear a larger torque than other shapes, thereby enhancing the structural strength of the second head 41 and improving the stability and reliability of the entire connection structure. Figure 2

[0062] Firstly, by designing the second head 41 in an internal hexagonal cylindrical shape, the lock bolt 4 can be rotated and tightened using an internal hexagonal wrench or an internal hexagonal sleeve, which is not only simple to operate, but also can effectively prevent the wrench from slipping, ensuring the accuracy and safety during installation.

[0063] Secondly, the internal hexagonal structure can bear a larger torque than other shapes, thereby enhancing the structural strength of the second head 41 and improving the stability and reliability of the entire connection structure.

[0064] ​​​In addition, the cylindrical design enables the second head 41 to sink more smoothly into the accommodating groove 11, reducing friction and resistance during installation, further improving installation efficiency and convenience.

[0065] In summary, by adopting the hexagonal cylindrical second head 41 design, the installation portability and structural strength of the locking bolt 4 are improved, the structural stability and reliability are enhanced, and the installation efficiency and smoothness are improved.

[0066] As Figure 5 shown, the application also discloses a self-unloading truck rear door locking device comprising the pin shaft connecting structure in any of the above embodiments.

[0067] In the specification of the utility model, a large number of specific details are explained. However, it can be understood that the embodiments of the 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 the specification.

[0068] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" 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 the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0069] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement to part or all of the technical features; and 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 be covered in the scope of the claims and specification of the utility model.

Claims

1. A pin connection structure, characterized in that, include: The locking nut (1) has multiple receiving grooves (11) arranged around the axis and radially through on its outer end face. Locking bolt (2), including First head (21). The first screw (22) is connected at one end to the first head (21) and at the other end is a radially penetrating insertion hole (221) and threadedly connected to the locking nut (1); The anti-loosening nut (3) is sunk and engaged in one of the receiving grooves (11); Anti-loosening bolts (4), including The second head (41) is submerged in another receiving groove (11). The second screw (42) is connected at one end to the second head (41), and at the other end, it passes through the insertion hole (221) and extends into the receiving groove (11) to be threadedly connected to the anti-loosening nut (3).

2. The pin connection structure according to claim 1, characterized in that, The locking nut (1) is hexagonal, and the receiving groove (11) corresponds one-to-one with the side of the locking nut (1).

3. The pin connection structure according to claim 1, characterized in that, The anti-loosening nut (3) is hexagonal, and the receiving groove (11) is rectangular.

4. The pin connection structure according to claim 1, characterized in that, The first head (21) is hexagonal.

5. The pin connection structure according to claim 1, characterized in that, The second head (41) is in the shape of an internal hexagonal cylinder.

6. A locking device for the rear door of a dump truck, characterized in that, Includes the pin connection structure as described in any one of claims 1 to 5.

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