Dump truck compartment locking device
Through the fully mechanical structure and hydraulic system, the problem of poor stability of the cargo locking device of the self-dumping vehicle in harsh environments is solved, and the stable and reliable locking effect is achieved in a dusty environment.
Patent Information
- Application Number
- CN202420741244.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-11
AI Technical Summary
The existing self-dumping vehicle cargo compartment locking device has reduced the service life of the circuit and reduced stability, making it difficult to work effectively in harsh environments.
The cargo compartment locking device adopts a fully mechanical structure and mechanical transmission method, provides locking force through the hydraulic system, and uses mechanical components such as pressure cylinders, piston rods, and pressurized valves to achieve long-distance control of cargo compartment locking to ensure that in harsh conditions stability in the environment.
It achieves stability and reliability in harsh environments, avoids circuit failures, extends service life, and prevents external pollution from affecting them, ensuring the normal operation of the cargo compartment locking device.
Smart Images
Figure CN222223992U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of locking devices, in particular to a locking device for a cargo compartment of a dump vehicle. Background Art
[0002] The main function of the cargo compartment locking device of a dump truck is to lock the cargo compartment while the vehicle is moving, preventing the cargo compartment from being accidentally opened during transportation, thereby protecting the safety of the cargo.
[0003] Common cargo compartment locking devices are usually activated by electrical control, but the circuits therein often suffer from problems such as significantly reduced service life and decreased circuit stability during unloading operations in dusty environments. Utility Model Content
[0004] The purpose of the utility model is to provide a dump vehicle cargo compartment locking device, which eliminates circuit, drive and other structures, and adopts a mechanical structure and a mechanical transmission method. Under the premise of remote control of the cargo compartment locking device, the stability of the dump vehicle cargo compartment locking device in the face of harsh working environments is guaranteed.
[0005] The utility model provides a locking device for a cargo compartment of a dump vehicle, comprising:
[0006] Pressure cylinder;
[0007] A piston rod, the piston end of which is slidably mounted in the pressure cylinder;
[0008] A connector, wherein the oil inlet and the oil outlet of the pressure cylinder are respectively connected to a connector;
[0009] A locking head, which is connected to the non-piston end of the piston rod and is a locking tongue of a cargo compartment locking device of a dump truck;
[0010] The pressure-actuated valve comprises a connecting port, wherein the two connecting ports of the pressure-actuated valve are respectively connected to two joints, and the pressure-actuated valve is normally in a blocking state and is switched to a conducting state during unloading.
[0011] Preferably, the pressure cylinder is a hollow cylinder with a perforation on one end thereof, and the wall thickness of this end face is twice the thickness of other walls. The oil inlet and the oil outlet of the pressure cylinder are respectively opened on the inner walls of the annular limit platforms at both ends. An annular limit platform is provided at both ends of the hollow interior of the pressure cylinder, and the inner wall of the annular limit platform is provided with a through hole. The piston rod is a square rod with rounded corners, and the piston rod and the inner wall of the perforation are sealed and fitted.
[0012] Preferably, the pressure-actuated valve also includes a pressure-actuated valve body, a pressure-actuated rod and a spring. The pressure-actuated valve body is a hollow cylinder with a through hole on its end face at one end. One end of the pressure-actuated rod is slidably assembled inside the pressure-actuated valve body, and the pressure-actuated rod and the inner wall of the pressure-actuated valve body are sealed and fitted, and the other end of the pressure-actuated rod is connected to a contact. The spring is located inside the pressure-actuated valve body, and its two ends respectively abut against the pressure rod and the bottom surface of the pressure valve body.
[0013] Preferably, the locking device further comprises a pipeline, and the pipeline is connected to the joint and the connection port.
[0014] Preferably, the locking device also includes a cargo compartment, a cargo compartment door and a vehicle body bracket, the cargo compartment is rotatably connected to the vehicle body bracket, the head end of the cargo compartment is fixedly connected to a pressure valve, and the rotating end of the cargo compartment is fixedly connected to a pressure cylinder, and the cargo compartment door is rotatably connected to the cargo compartment.
[0015] Preferably, a fixing protrusion is provided on the cargo compartment door, the fixing protrusion is located in the middle of the opening end of the cargo compartment door, and the fixing protrusion and the locking head form a buckle.
[0016] Preferably, the locking device further comprises a manual valve, the manual valve and the pressure-actuated valve are connected in parallel, and the manual valve is fixedly connected to the side of the vehicle body bracket.
[0017] Preferably, the locking device further comprises a top block, a top surface of which is in contact with the pressure-actuated valve, and the top block is fixedly connected to the vehicle body bracket.
[0018] Preferably, the pressure cylinder and the pressure-actuated valve are both provided with an integrally formed fixed base, and the pressure cylinder and the pressure-actuated valve are fixed in position by the fixed base provided thereon.
[0019] Preferably, the pressure cylinder and the pressure-actuated valve are both provided with reinforcing ribs connected to the corresponding fixed base.
[0020] The technical solution of the utility model provides locking force through the hydraulic system. When the pressure-driven valve is forced to disconnect the oil circuit, the piston rod will be fixed in the current position due to the blockage of the oil circuit. When the pressure-driven valve is connected, the oil circuit will be connected and the piston rod can move freely. The entire locking device adopts a mechanical design, which has good performance in stability and reliability. At the same time, the entire locking process is completely closed inside to avoid pollution from the external environment, so that the device can cope with relatively harsh working environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] 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.
[0022] Figure 1 This is a position relationship diagram of the locking device of the cargo compartment of a dump vehicle of the utility model;
[0023] Figure 2 It is a cross-sectional view of the locking device for the cargo compartment of a dump vehicle of the utility model;
[0024] Figure 3 This is a connection diagram of the locking device for the cargo compartment of a dump vehicle of the utility model;
[0025] Figure 4 for Figure 1 Normal cross-sectional view of the pressure-actuated valve in the cargo compartment locking device of a dump truck;
[0026] Figure 5 for Figure 1 A cross-sectional view of a compression state of a pressure-actuated valve in a cargo compartment locking device of a dump truck;
[0027] Figure 6 for Figure 1 A cross-sectional view of the actuating element in the locking device of the cargo compartment of a dump truck;
[0028] Description of reference numerals:
[0029] 11. Pressure cylinder; 111. Annular limit platform; 112. Connector; 12. Piston rod; 121. Locking head; 2. Pressure valve; 21. Pressure valve body; 211. Connecting port; 22. Pressure rod; 221. Contact; 23. Spring; 24. Top block; 3. Manual valve; 4. Pipeline; 5. Cargo box; 51. Cargo box door; 511. Fixing protrusion; 6. Vehicle body bracket. DETAILED DESCRIPTION
[0030] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0032] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, 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 of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" 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, or it can be the internal communication of two components. 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.
[0033] Combination Figures 1 to 6 As shown, a locking device for a cargo compartment of a dump vehicle provided by the utility model includes a pressure cylinder 11 , a piston rod 12 , a joint 112 , a locking head 121 and a pressure-actuated valve 2 .
[0034] Combination Figures 1 to 6 As shown, the piston end of the piston rod 12 is slidably assembled in the pressure cylinder 11; the oil inlet and the oil outlet of the pressure cylinder 11 are respectively connected to a joint 112; the locking head 121 is connected to the non-piston end of the piston rod 12, and the locking head 121 is the locking tongue of the cargo compartment locking device of the dump vehicle; the pressure-activated valve 2 includes a connecting port 211, and the two connecting ports 211 of the pressure-activated valve 2 are respectively connected to the two joints 112, and the pressure-activated valve 2 is normally in a blocking state, and is turned into a conducting state during unloading. The cargo compartment locking device of the dump vehicle removes the circuit, drive and other structures, and adopts all mechanical structures and mechanical transmission methods, so as to achieve the stability of the cargo compartment locking device of the dump vehicle under the premise of remote control of the cargo compartment locking device when facing harsh working environments.
[0035] In some embodiments, in combination Figure 6As shown, the pressure cylinder 11 is a hollow cylinder, and a perforation is provided on the end face of one end thereof, and the wall thickness of this end face is twice the thickness of other walls. The perforation is a square hole with rounded corners. Both ends of the hollow interior of the pressure cylinder 11 are provided with annular limit platforms 111. The oil inlet and oil outlet of the pressure cylinder 11 are respectively opened on the inner walls of the annular limit platforms 111 at both ends. The piston rod 12 is a square rod with rounded corners, and the piston rod 12 is sealed and fitted with the inner wall of the perforation. The design of the pressure cylinder 11 and the piston rod 12 refers to the design of the hydraulic cylinder. Increasing the wall thickness of the perforated end of the pressure cylinder 11 can improve its force stability. The square perforation and the piston rod 12 can prevent the piston rod 12 from rotating, thereby ensuring its working stability.
[0036] In some embodiments, in combination Figures 1 to 5 As shown, the pressure-activated valve 2 also includes a pressure-activated valve body 21, a pressure rod 22 and a spring 23. The pressure-activated valve body 21 is a hollow cylinder with a through hole on the end face of one end. One end of the pressure rod 22 is slidably assembled inside the pressure-activated valve body 21, and the pressure rod 22 and the inner wall of the pressure-activated valve body 21 are sealed and fitted, and the other end of the pressure rod 22 is connected to a contact 221. The spring 23 is located inside the pressure-activated valve body 21, and its two ends are respectively against the pressure rod 22 and the bottom surface of the pressure-activated valve body 21. By applying pressure to the contact 221, the position of the pressure rod 22 can be changed, thereby realizing the switching of the working state of the pressure-activated valve 2 and completing the control of the pressure-activated valve 2 over the actuating element of the cargo box locking device.
[0037] In some embodiments, in combination Figure 1 and Figure 3 As shown, it is characterized in that the locking device also includes a pipe 4, and the pipe 4 connects the joint 112 and the connecting port 211. The pressure is transmitted through the pipe 4, which can extend the distance between the components and realize the flexible installation of the locking device of the dump vehicle cargo compartment.
[0038] In some embodiments, in combination Figure 1 , Figure 2 As shown, it is characterized in that the locking device also includes a cargo compartment 5, a cargo compartment door 51 and a body bracket 6, the cargo compartment 5 is rotatably connected to the body bracket 6, the head end of the cargo compartment 5 is fixedly connected to the pressure valve 2, and the rotating end of the cargo compartment 5 is fixedly connected to the pressure cylinder 11, the cargo compartment door 51 is rotatably connected to the cargo compartment 5, and the installation position of the dump vehicle cargo compartment locking device on the cargo compartment 5 and the cargo compartment door 51 is also a part of its design, which can realize that the pressure valve 2 changes its own working state as the working state of the cargo compartment 5 changes, and reduce the changes of the cargo compartment 5 and the cargo compartment door 51 caused by the installation of the pressure cylinder 11, and the body bracket 6 represents the body responsible for carrying various components.
[0039] In some embodiments, in combination Figure 1 , Figure 2 As shown, it is characterized in that a fixing protrusion 511 is provided on the cargo compartment door 51, and the fixing protrusion 511 is located in the middle of the open end of the cargo compartment door 51, and the fixing protrusion (511) and the locking head (121) form a buckle. The design of the fixing protrusion 511 can greatly reduce the volume of the locking head 121 while ensuring the working effect of the locking head 121, improve the force of the piston rod 12, and optimize the locking device.
[0040] In some embodiments, in combination Figure 1 , Figure 2 As shown, it is characterized in that the locking device also includes a manual valve 3, the manual valve 3 and the pressure-actuated valve 2 are connected in parallel, and the manual valve 3 is fixedly connected to the side of the vehicle body bracket 6. The establishment of the manual valve 3 enriches the capabilities of the dump vehicle cargo compartment locking device and is also a guarantee during its working process.
[0041] In some embodiments, in combination Figure 2 and Figure 4 As shown, it is characterized in that the locking device also includes a top block 24, the top surface of the top block 24 fits the pressure-activated valve 2, and the top block 24 is fixedly connected to the vehicle body bracket 6. The top block 24 withstands the wear of the pressure-activated valve 2 on the vehicle body bracket 6, thereby improving the service life of the dump vehicle cargo compartment locking device and reducing the requirements for the pressure-activated valve 2 on the installation position.
[0042] In some embodiments, in combination Figures 1 to 6 As shown, it is characterized in that the pressure cylinder 11 and the pressure-actuated valve 2 are both provided with an integrally formed fixed base, and the pressure cylinder 11 and the pressure-actuated valve 2 are fixed in position by the fixed base arranged thereon. Since the pressure cylinder 11 and the pressure-actuated valve 2 will be subjected to external impact force during operation, the design of an integrally formed fixed base can improve the resistance of the components to impact force, reduce the possibility of deviation during operation, and improve the working stability of the dump vehicle cargo compartment locking device.
[0043] In some embodiments, in combination Figures 1 to 6 As shown, it is characterized in that the pressure cylinder 11 and the pressure-actuated valve 2 are both provided with reinforcing ribs connected to the corresponding fixed base. The establishment of the reinforcing ribs can enhance the self-strength of the pressure cylinder 11 and the pressure-actuated valve 2, improve the working stability of the dump vehicle cargo compartment locking device and extend its service life.
[0044] Working process: the space at both ends of the piston rod 12 is connected to the pressure-activated valve 2 through the pipe 4. When the cargo box is in a stable state, the top block 24 will touch the contact 221 of the pressure-activated valve 2, so that the internal spring 23 is compressed, and the pressure-activated valve 2 is in a blocking state, so that the space at both ends of the piston rod 12 is disconnected, thereby fixing the position of the piston rod 12. At this time, the locking head 121 on the piston rod 12 will also fix the cargo box door 51; when the cargo box is raised and in a tilted state, the top block 24 and the contact 221 are separated, and the pressure-activated valve 2 is restored to a conducting state under the action of the spring 23, so that the space at both ends of the piston rod 12 is connected, the piston rod 12 can move freely, and the locking head 121 also loses its ability to lock the cargo box door 51.
[0045] 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, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A dump truck cargo compartment locking device, characterized in that: include: Pressure cylinder (11); A piston rod (12), the piston end of the piston rod (12) being slidably mounted in the pressure cylinder (11); A connector (112), wherein the oil inlet and the oil outlet of the pressure cylinder (11) are respectively connected to a connector (112); A locking head (121), the locking head (121) being connected to the non-piston end of the piston rod (12), and the locking head (121) being a locking tongue of a cargo compartment locking device of a dump truck; A pressure-actuated valve (2), wherein the two connection ports (211) of the pressure-actuated valve (2) are respectively connected to the two connectors (112), and the pressure-actuated valve (2) is normally in a blocking state and is switched to a conducting state during unloading.
2. The dump truck cargo compartment locking device according to claim 1, characterized in that: The pressure cylinder (11) is a hollow cylinder, and a perforation is provided on the end face of one end thereof, and the wall thickness of the end face is twice the wall thickness of other walls, and the perforation is a square hole with rounded corners. Both ends of the hollow interior of the pressure cylinder (11) are provided with annular limit platforms (111), and the oil inlet and the oil outlet of the pressure cylinder (11) are respectively opened on the inner walls of the annular limit platforms (111) at both ends, and the piston rod (12) is a square rod with rounded corners, and the piston rod (12) and the inner wall of the perforation are sealed and fitted.
3. The dump truck cargo compartment locking device according to claim 1, characterized in that: The pressure-actuated valve (2) further comprises a pressure-actuated valve body (21), a pressure-actuated rod (22) and a spring (23); the pressure-actuated valve body (21) is a hollow cylindrical body, and a through hole is provided on the end surface of one end thereof; one end of the pressure-actuated rod (22) is slidably mounted inside the pressure-actuated valve body (21), and the pressure-actuated rod (22) and the inner wall of the pressure-actuated valve body (21) are sealed and fitted, and the other end of the pressure-actuated rod (22) is connected to a contact (221); the spring (23) is located inside the pressure-actuated valve body (21), and its two ends respectively abut against the pressure-actuated rod (22) and the bottom surface of the pressure-actuated valve body (21).
4. The dump truck cargo compartment locking device according to claim 1, characterized in that: It also includes a pipeline (4), wherein the pipeline (4) is connected to the joint (112) and the connection port (211).
5. The dump truck cargo compartment locking device according to claim 1, characterized in that: It also includes a cargo compartment (5), a cargo compartment door (51) and a vehicle body bracket (6), wherein the cargo compartment (5) is rotatably connected to the vehicle body bracket (6), the head end of the cargo compartment (5) is fixedly connected to a pressure-actuated valve (2), and the rotating end of the cargo compartment (5) is fixedly connected to a pressure cylinder (11), and the cargo compartment door (51) is rotatably connected to the cargo compartment (5).
6. The dump truck cargo compartment locking device according to claim 5, characterized in that: The cargo compartment door (51) is provided with a fixing protrusion (511), the fixing protrusion (511) is located in the middle of the open end of the cargo compartment door (51), and the fixing protrusion (511) and the locking head (121) form a buckle.
7. The dump truck cargo compartment locking device according to claim 5, characterized in that: It also comprises a manual valve (3), the manual valve (3) and the pressure-actuated valve (2) are connected in parallel, and the manual valve (3) is fixedly connected to the side of the vehicle body bracket (6).
8. The dump truck cargo compartment locking device according to claim 5, characterized in that: It also comprises a top block (24), the top surface of which is in contact with the pressure-actuated valve (2), and the top block (24) is fixedly connected to the vehicle body bracket (6).
9. The dump truck cargo compartment locking device according to claim 1, characterized in that: The pressure cylinder (11) and the pressure-actuated valve (2) are both provided with an integrally formed fixed base, and the pressure cylinder (11) and the pressure-actuated valve (2) are fixed in position by the fixed base provided thereon.
10. The dump truck cargo compartment locking device according to claim 9, characterized in that: The pressure cylinder (11) and the pressure-actuated valve (2) are both provided with reinforcing ribs connected to the corresponding fixed bases.