Dumper carriage rear door locking mechanism and dumper

Abstract

The utility model discloses a dump truck carriage rear door locking mechanism and a dump truck, and relates to the technical field of dump trucks, the dump truck carriage rear door locking mechanism comprises a carriage and a rear door, the lock plate is mounted at the bottom of the rear door; the support is mounted at the bottom of the carriage and is provided with a through groove; the first lock hook and the second lock hook are hinged to the inner side of the support, one end of each lock hook is rotationally connected with the corresponding telescopic piece, the other end of each lock hook penetrates through the corresponding through groove and can act on the two ends of the corresponding lock plate, and lug plates are arranged on the side faces, away from the lock plates, of the first lock hook and the second lock hook. The telescopic piece drives the first lock hook and the second lock hook to be pressed on the outer end face of the lock plate. When the telescopic piece is located at the initial position, the telescopic piece drives the lug plates of the first lock hook and the second lock hook to be clamped and embedded in the edge of the upper end of the through groove. According to the dumper carriage rear door locking mechanism, the technical problem that an existing dumper carriage rear door locking mechanism is short in service life is solved, the reliability and durability of the dumper carriage rear door locking mechanism are improved, and the service life of the locking mechanism is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of dump truck, especially relates to a dump truck carriage rear door locking mechanism and dump truck. BACKGROUND

[0002] As an important means of transportation, dump trucks are widely used in construction, mining and other industries. One of its key components is the cargo box, which is responsible for carrying and safely transporting goods to designated locations. To ensure the safety and efficiency of goods transportation, the design of the cargo box must take into account stability and safety under various operating conditions. Among them, the hydraulic rear door locking mechanism as an important part of the cargo box is crucial to maintaining the stability and reliability of the rear door during transportation, lifting and unloading.

[0003] However, the current market for most dump trucks has a significant defect in the hydraulic rear door locking mechanism: lack of effective mechanical limiting structure to fix the position of the lock hook. When the lock hook is in the open state, the locking mechanism as a whole presents a floating feature without constraints. This floating state is prone to cause unnecessary structural interference between the rear door and the locking mechanism when the cargo box performs lifting or lowering actions, especially during rapid descent. Such interference not only weakens the working performance of the locking mechanism, reduces its reliability and durability, but also causes serious wear and even damage to the core components such as the lock hook and locking cylinder, reducing the service life.

[0004] Therefore, how to provide a dump truck carriage rear door locking mechanism to ensure the position stability of the lock hook during opening and closing, and avoid structural interference and component damage is a technical problem that needs to be solved by those skilled in the art at present. SUMMARY

[0005] The utility model aims at providing a dump truck carriage rear door locking mechanism and dump truck, which solves the technical problem of short service life of the existing dump truck carriage rear door locking mechanism.

[0006] To achieve the above-mentioned purpose, the utility model provides a dump truck carriage rear door locking mechanism, which comprises:

[0007] The carriage and the rear door are rotatably connected at the top of the rear end of the carriage.

[0008] The locking plate is fixedly installed at the bottom of the rear door.

[0009] The support is fixedly installed at the bottom of the carriage, the locking plate can be attached to the outer side of the support, and the support is provided with a through slot corresponding to the two ends of the locking plate.

[0010] A first locking hook and a second locking hook are respectively hinged to the inner side of the support, the first end of the first locking hook and the second locking hook are rotationally connected with the telescopic member, the second end of the first locking hook and the second locking hook respectively passes through the corresponding end of the through slot and is provided with an ear plate on the side away from the lock plate, and the telescopic member can drive the first locking hook and the second locking hook to approach or move away from each other.

[0011] The telescopic member has a working position and an initial position, when the telescopic member is in the working position, the telescopic member drives the first locking hook and the second locking hook to approach and press on the outer end surface of the lock plate, when the telescopic member is in the initial position, the telescopic member drives the first locking hook and the second locking hook to move away from each other and makes the ear plate clamped on the upper end edge of the through slot, thereby fixing the first locking hook and the second locking hook.

[0012] Preferably, the first end of the first locking hook is hinged to the telescopic end of the telescopic member, and the first end of the second locking hook is hinged to the fixed end of the telescopic member.

[0013] Preferably, the telescopic member is a hydraulic oil cylinder.

[0014] Preferably, the second end of the first locking hook and the second locking hook is rotationally provided with a roller, and the left and right end guide surfaces of the lock plate are inclined surfaces.

[0015] Preferably, the lock plate is a high-strength wear-resistant steel plate, and the roller is an alloy roller.

[0016] Preferably, the middle part of the first locking hook and the second locking hook is provided with a connecting plate, and the connecting plate is connected with the support through a pin shaft.

[0017] Preferably, the control module is further provided, which is electrically connected with the telescopic member and is used for remotely controlling the telescopic action of the telescopic member.

[0018] A self-unloading vehicle comprising the self-unloading vehicle compartment rear door locking mechanism.

[0019] With respect to the above background technology, the self-unloading vehicle compartment rear door locking mechanism provided by the present application can drive the first locking hook and the second locking hook to approach each other and finally press on the outer end surface of the lock plate when the rear door needs to be locked, thereby firmly fixing the rear door on the compartment.

[0020] Therefore, the self-unloading vehicle compartment rear door locking mechanism provided by the application realizes stable locking of the rear door through the close cooperation of the locking hook and the locking plate and the driving effect of the telescopic piece, effectively prevents accidental movement of the locking hook in the unlocking state through the arrangement of the lug plate, guarantees the safety of operation, improves reliability and durability, and prolongs the service life of the locking mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only 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 the provided drawings.

[0022] Fig. 1 A self-unloading vehicle compartment rear door locking mechanism provided by the embodiment of the present application is shown in the figure.

[0023] Fig. 2 The locking hook and the telescopic piece are connected as shown in the figure.

[0024] Among them:

[0025] 1-compartment, 2-rear door, 3-locking plate, 4-stand, 5-through slot, 6-first locking hook, 7-second locking hook, 8-telescopic piece, 9-lug plate, 10-roller, 11-connection plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] In order to make those skilled in the art better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0028] Referring to Figs. 1-2The self-unloading vehicle compartment rear door locking mechanism provided by the application comprises a compartment 1, a rear door 2, the top of the rear door 2 being rotationally connected to the top of the rear end of the compartment 1, a locking plate 3 being fixedly installed at the bottom of the rear door 2, a support 4 being fixedly installed at the bottom of the compartment 1, the locking plate 3 being located outside the support 4, the support 4 being provided with through grooves 5 corresponding to the two ends of the locking plate 3, a first locking hook 6 and a second locking hook 7 being respectively hingedly connected to the inner side of the support 4, the first end of the first locking hook 6 and the first end of the second locking hook 7 being rotationally connected to an extension piece 8, the second end of the first locking hook 6 and the second end of the second locking hook 7 respectively penetrating through the through grooves 5 and being located at the two ends of the locking plate 3, and the side of the second end of the first locking hook 6 and the second end of the second locking hook 7 away from the locking plate 3 being provided with an ear plate 9, the extension piece 8 being capable of driving the first locking hook 6 and the second locking hook 7 to approach or move away from each other, the extension piece 8 having a working position and an initial position, when the extension piece 8 is located at the working position, the extension piece 8 drives the first locking hook 6 and the second locking hook 7 to approach each other and press tightly against the outer end surface of the locking plate 3, and when the extension piece 8 is located at the initial position, the extension piece 8 drives the first locking hook 6 and the second locking hook 7 to move away from each other and enables the ear plate 9 to be clamped on the upper end edge of the through groove 5, thereby fixing the first locking hook 6 and the second locking hook 7.

[0029] That is, the top of the rear door 2 is connected to the top of the rear end of the compartment 1 through a rotational connecting piece, so that the rear door 2 can be opened and closed relative to the compartment 1.

[0030] The locking plate 3 is fixedly installed at the bottom of the rear door 2, and when the rear door 2 is closed, the locking plate 3 is located outside the support 4.

[0031] The left and right ends of the support 4 are provided with the through grooves 5, and when the rear door 2 is closed, the two through grooves 5 are respectively located at the left and right ends of the locking plate 3.

[0032] The first locking hook 6 and the second locking hook 7 are respectively hingedly connected to the inner side of the support 4, one end of each of the first locking hook 6 and the second locking hook 7 being rotationally connected to the extension piece 8, and the other end penetrating through the through grooves 5 and being capable of acting on the two ends of the locking plate 3.

[0033] The ear plate 9 is arranged on the side of the first locking hook 6 and the second locking hook 7 away from the locking plate 3, and is used for being clamped on the upper end edge of the through groove 5 when the first locking hook 6 and the second locking hook 7 are in the initial position, thereby fixing the first locking hook 6 and the second locking hook 7.

[0034] The extension piece 8 drives the first locking hook 6 and the second locking hook 7 to approach or move away from each other, and has a working position (for pressing the locking plate) and an initial position (for releasing the locking plate and fixing the locking hook).

[0035] Working principle:

[0036] When the rear door 2 needs to be locked, the extension piece 8 is driven to the working position, forcing the first locking hook 6 and the second locking hook 7 to approach each other, and finally pressing against the outer end surface of the locking plate 3, thereby firmly fixing the rear door 2 on the compartment 1.

[0037] When the rear door 2 needs to be opened, the telescopic member 8 is retracted to the initial position, so that the first and second locking hooks 6 and 7 are away from each other, at this time, the lug plate 9 is clamped on the upper edge of the through slot 5, preventing the first and second locking hooks 6 and 7 from moving accidentally, and ensuring the safety of the operation.

[0038] Therefore, the application provides a self-unloading vehicle carriage rear door locking mechanism, which realizes stable locking of the rear door through the close cooperation of the locking hooks and the locking plate and the driving effect of the telescopic member, effectively prevents accidental movement of the locking hooks in the unlocked state through the setting of the lug plate, ensures the safety of the operation, improves the reliability and durability, and prolongs the service life of the locking mechanism.

[0039] On the basis of the above embodiment, the first end of the first locking hook 6 is hinged to the telescopic end of the telescopic member 8, and the first end of the second locking hook 7 is hinged to the fixed end of the telescopic member 8; the telescopic member 8 is a hydraulic oil cylinder.

[0040] Specifically, the first end of the first locking hook 6 is hinged to the telescopic end (i.e. the movable end) of the telescopic member 8, and the first end of the second locking hook 7 is hinged to the fixed end (i.e. the non-movable end) of the telescopic member 8, which helps to realize more uniform locking force distribution, and when the telescopic member 8 is telescoped, the moving distance and angle of the first and second locking hooks 6 and 7 will change with the telescoping of the telescopic member, and the two work together to realize the compression of the locking plate 3.

[0041] The telescopic member 8 is a hydraulic oil cylinder, which is very suitable for use in the locking mechanism of the self-unloading vehicle carriage rear door, because the hydraulic oil cylinder has the advantages of compact structure, stable operation, and the ability to withstand large pressure and tension.

[0042] On the basis of the above embodiment, the second end of the first and second locking hooks 6 and 7 is rotatably provided with a roller 10, and the left and right end guide surfaces of the locking plate 3 are both designed as inclined surfaces.

[0043] That is, the second end (i.e. the end in contact with the locking plate 3) of the first and second locking hooks 6 and 7 is rotatably provided with a roller 10; the left and right end guide surfaces (i.e. the surfaces in contact with the roller 10) of the locking plate 3 are both designed as inclined surfaces; the design of the inclined surfaces helps to guide the smooth movement of the roller 10 during locking and unlocking.

[0044] When the telescopic end of the hydraulic oil cylinder is extended, it pushes the first locking hook 6 to move towards the locking plate 3, at the same time, the second locking hook 7 also rotates with the fixed end of the hydraulic oil cylinder, and the two move towards the locking plate 3; in this process, the roller 10 rolls along the inclined surface of the locking plate 3, and the telescopic member 8 drives the first and second locking hooks 6 and 7 to move towards each other and gradually compress the outer end surface of the locking plate 3, until the locking state is reached.

[0045] The angle of the inclined surface should be reasonably designed according to the actual use requirements to ensure that the roller 10 can smoothly roll along the inclined surface.

[0046] The material of the roller 10 should be wear-resistant and durable, such as steel or alloy, and coated with a friction-reducing coating, such as lubricating oil or Teflon.

[0047] The roller 10 is arranged so that when the lock hook is pressed against the lock plate, it is in contact with the inclined surface of the lock plate, rather than directly contacting the metal surface of the lock hook, thereby greatly reducing the frictional resistance and reducing the wear of the lock hook and the lock plate 3, and improving the service life.

[0048] The lock plate 3 is made of high-strength wear-resistant steel, which improves the compressive strength and wear resistance of the lock plate 3.

[0049] Based on the above embodiment, the middle part of the first lock hook 6 and the second lock hook 7 is provided with a connecting plate 11, which is connected to the support 4 through a pin shaft.

[0050] That is, a connecting plate 11 is added to the middle part of the first lock hook 6 and the second lock hook 7.

[0051] The connecting plate 11 is connected to the support 4 through a pin shaft to ensure smooth rotation of the lock hook during locking and unlocking.

[0052] The pin shaft should be made of high-strength and wear-resistant material to ensure the reliability and durability of the connection point; the installation of the pin shaft should ensure that the connecting plate 11 can rotate freely within a certain range, while preventing it from falling off or loosening.

[0053] Based on the above embodiment, a control module is further included, which is electrically connected to the telescopic member 8 and is used for remotely controlling the telescopic action of the telescopic member 8, that is, the control module is an electronic device integrated with control logic and communication interface, which can communicate with the remote controller in the hands of the operator through wired or wireless means. When the operator needs to remotely lock or unlock the back door, they only need to send the corresponding instruction to the control module through the remote controller, and the control module will immediately parse and convert it into an electrical signal that the telescopic member 8 can understand, and then drive the telescopic member 8 to perform the corresponding telescopic action.

[0054] The present application not only provides an innovative self-unloading truck carriage back door locking mechanism, but also further provides a self-unloading truck containing the locking mechanism, thereby providing users with a safer, more efficient and convenient use experience.

[0055] It should be noted that in the present specification, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between the entities.

[0056] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A locking mechanism for the rear door of a dump truck body, characterized in that, include: The carriage (1) and the rear door (2) are rotatably connected to the top of the rear end of the carriage (1). Lock plate (3) is fixedly installed at the bottom of the rear door (2); The support (4) is fixedly installed at the bottom of the carriage (1). The lock plate (3) can be attached to the outside of the support (4). The support (4) is provided with through grooves (5) corresponding to both ends of the lock plate (3). The first hook (6) and the second hook (7) are respectively hinged to the inner side of the support (4). The first ends of the first hook (6) and the second hook (7) are rotatably connected to the telescopic member (8). The second ends pass through the through groove (5) and are located at the two ends of the lock plate (3). The side of the second end away from the lock plate (3) is provided with an ear plate (9). The telescopic member (8) can drive the first hook (6) and the second hook (7) to move closer or further away from each other. The telescopic member (8) has a working position and an initial position. When the telescopic member (8) is in the working position, the telescopic member (8) drives the first locking hook (6) and the second locking hook (7) to approach each other and press against the outer end face of the locking plate (3). When the telescopic member (8) is in the initial position, the telescopic member (8) drives the first locking hook (6) and the second locking hook (7) to move away from each other and makes the ear plate (9) snap into the upper edge of the through groove (5) to fix the first locking hook (6) and the second locking hook (7).

2. The dump truck rear door locking mechanism according to claim 1, characterized in that, The first end of the first locking hook (6) is hinged to the telescopic end of the telescopic member (8), and the first end of the second locking hook (7) is hinged to the fixed end of the telescopic member (8).

3. The dump truck rear door locking mechanism according to claim 2, characterized in that, The telescopic component (8) is a hydraulic cylinder.

4. The dump truck rear door locking mechanism according to claim 1, characterized in that, The second ends of the first locking hook (6) and the second locking hook (7) are both rotatably equipped with rollers (10), and the guide surfaces at both ends of the locking plate (3) are both set as inclined surfaces.

5. The dump truck rear door locking mechanism according to claim 4, characterized in that, The locking plate (3) is a high-strength wear-resistant steel plate, and the roller (10) is an alloy roller.

6. The locking mechanism for the rear door of the dump truck body according to claim 1, characterized in that, Both the first locking hook (6) and the second locking hook (7) are provided with a connecting plate (11) in the middle, and the connecting plate (11) is connected to the support (4) by a pin.

7. A locking mechanism for the rear door of a dump truck body according to claim 1, characterized in that, It also includes a control module, which is electrically connected to the telescopic component (8) and is used to remotely control the telescopic action of the telescopic component (8).

8. A dump truck, characterized in that, Includes the dump truck rear door locking mechanism as described in any one of claims 1-7.

Images