Dump truck lifting device with auxiliary support

Abstract

The invention discloses a tilting cart lifting device with an auxiliary support, and relates to the field of tilting carts, the tilting cart lifting device comprises a cart body and a carriage, an auxiliary mechanism is mounted at the bottom of the cart body, and support parts are mounted on two sides of the top of the cart body. After the driving motor is started, the belt transmission assembly drives the threaded rod to rotate and controls the sliding frame to linearly move in the limiting hole, then the two driving frames are synchronously driven to move, and the movement of the driving frames enables a first tooth groove and a second tooth groove to act on a first transmission gear and a second transmission gear correspondingly; the first linkage frame and the third linkage frame are pushed to be unfolded, the second supporting plate and the first supporting plate are driven to move at the same time in the process, the vertical positions of the two supporting plates are adjusted through free stretching and retracting of the telescopic rods, stable supporting is provided, the tilting cart is prevented from shaking and inclining in the lifting process, and especially when the gravity center of a compartment changes, the tilting cart can be lifted more stably. The auxiliary support ensures the stability of the carriage by balancing the vehicle body.

Description

Technical Field

[0001] The invention relates to the technical field of dump trucks, in particular to a dump truck lifting device with auxiliary support. Background Art

[0002] A dump truck is a special vehicle with a tipping bucket for short-distance material transportation. A "bucket"-shaped container is installed on the vehicle body, which can be turned over for easy unloading. It is suitable for short-distance transportation of various bulk materials such as sand, gravel, earth, coal, ore, etc. It has strong power and usually has a mechanical bucket return function.

[0003] For example, the dump truck anti-tipping system and dump truck disclosed in the publication number CN113859082A, comprises a chassis, a cargo compartment and a lifting device, wherein the cargo compartment and the lifting device are both arranged on the chassis, the rear end of the cargo compartment is rotatably connected to the chassis, one end of the lifting device is connected to the cargo compartment, and the other end of the lifting device is connected to the chassis, the lifting device is used to drive the cargo compartment to rotate relative to the chassis, the dump truck anti-tipping system comprises a controller, a first inclination sensor, a second inclination sensor and a weight sensor, the first inclination sensor is used to detect a first inclination angle value of the chassis along the length direction of the dump truck, the second inclination sensor is used to detect a second inclination angle value of the chassis along the width direction of the dump truck, the weight sensor is used to judge the load value of the dump truck, the lifting device, the first inclination sensor, the second inclination sensor and the weight sensor are respectively connected to the controller, and the controller controls the lifting of the lifting device according to the detection values ​​of the first inclination sensor, the second inclination sensor and the weight sensor.

[0004] However, in the prior art, during the lifting process of the dump truck (or dump truck), there is a lack of sufficient auxiliary support, and the body of the vehicle is prone to become unstable during the lifting process. The shaking or tilting of the body can easily cause the dump truck to tip over or become unbalanced, thereby endangering the safety of the operator and equipment. In the absence of auxiliary support, the deflection (degree of bending) of the body is likely to increase, affecting the lifting accuracy and stability, and causing the loaded items to tilt or fall. In addition, the body of the vehicle is prone to accidental tilting or sliding during the lifting process, putting the operator in danger. Summary of the invention

[0005] The object of the present invention is to provide a dump truck lifting device with auxiliary support to solve the problem that the vehicle body becomes unstable easily during the lifting process due to insufficient auxiliary support proposed in the above background technology, and the shaking or tilting of the vehicle body easily causes the dump truck to tip over or become unbalanced.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a lifting device for a dump truck with auxiliary support, comprising a vehicle body and a vehicle compartment, an auxiliary mechanism is installed at the bottom of the vehicle body, and support members are installed on both sides of the top of the vehicle body, and a plurality of support mechanisms are installed at the bottom of the auxiliary mechanism;

[0007] The support mechanism includes a sliding frame, a linkage rod and a second support plate, both ends of the sliding frame are fixedly connected to the driving frame, a first tooth groove is opened at the bottom of one end of the driving frame, and a second tooth groove is opened at the top of the other end of the driving frame, one end of the linkage rod is rotatably connected to the first linkage frame, and the other end of the linkage rod is rotatably connected to the second linkage frame, the top outer surface of the first linkage frame is rotatably connected to the first transmission gear, the first transmission gear is meshed with the first tooth groove, the bottom end of the first transmission gear is rotatably connected to the first support plate, one side of the top end of the first support plate is rotatably connected to the bottom end of the second linkage frame, one side of the top end of the second support plate is rotatably connected to the third linkage frame, the top end of the third linkage frame is rotatably connected to the second transmission gear, and the second transmission gear is meshed with the second tooth groove.

[0008] Preferably, a motor frame is fixedly connected to the bottom of the vehicle body, a drive motor is installed on the top of the motor frame, a belt transmission assembly is fixedly connected to the output end of the drive motor, a threaded rod is fixedly connected to the top of the belt transmission assembly, and the outer surface of one end of the threaded rod is threadedly connected to the middle of the sliding frame.

[0009] Preferably, a limiting hole is opened at the bottom of the vehicle body, both ends of the sliding frame pass through the limiting hole, and the sliding frame is slidably connected to the limiting hole, both sides of the top of the first support plate and the top of the second support plate are fixedly connected with telescopic rods, and the top of the telescopic rods is fixedly connected to the vehicle body.

[0010] Preferably, the auxiliary mechanism includes a fixed frame, a sliding rod is fixedly connected to the bottom end of the fixed frame, a lifting plate is slidably connected to the outer surface of the top end of the sliding rod, a first swing rod is rotatably connected to the outer surface of the lifting plate, a movable frame is rotatably connected to the bottom end of the first swing rod, a fourth rotating sleeve and a second rotating sleeve are rotatably connected to the outer surface of the top end of the movable frame, and the outer surface of the bottom end of the sliding rod is fixedly connected to the rotating frame.

[0011] Preferably, the outer surface of the rotating frame is rotatably connected to a second swing rod, the outer surface of the top end of the second swing rod is rotatably connected to a first rotating sleeve and a third rotating sleeve, a first movable plate is fixedly connected between the first rotating sleeve and the second rotating sleeve, and a second movable plate is fixedly connected between the third rotating sleeve and the fourth rotating sleeve.

[0012] Preferably, a lifting frame is arranged above the fixing frame, the bottom end of the lifting frame passes through the top of the fixing frame, and the bottom of the lifting frame is fixedly connected to the top of the lifting plate.

[0013] Preferably, the support member includes a fixed block, the bottom of the fixed block is fixedly connected to the top of the vehicle body, and the side wall of the fixed block is rotatably connected to a first transmission rod, a limiting rod is provided on one side of the first transmission rod, the bottom end of the limiting rod is rotatably connected to the fixed block, and the top end of the limiting rod is rotatably connected to a shell.

[0014] Preferably, the inner side of the shell is rotatably connected to the top end of the first transmission rod, and the inner side top end of the shell is rotatably connected to the second transmission rod, and the top end of the second transmission rod is rotatably connected to the side wall of the carriage.

[0015] Preferably, a second half gear is fixedly connected to the inner side of the bottom end of the second transmission rod, a first half gear is fixedly connected to the inner side of the top end of the first transmission rod, and the first half gear is meshingly connected with the second half gear.

[0016] Preferably, a first support frame is fixedly connected to the inner side of one end of the vehicle body, the bottom end of the vehicle body is rotatably connected to the first support frame, the second wheel frame, the first wheel frame and the fixed shaft are fixedly connected to the bottom of the vehicle body, the middle part of the fixed shaft is rotatably connected to a hydraulic cylinder, and both ends of the fixed shaft are rotatably connected to a second lifting rod, the top end of the second lifting rod is rotatably connected to the first lifting rod, the top end of the first lifting rod is rotatably connected to the second support frame, the second support frame is fixedly connected to the bottom of the vehicle body, the output end of the hydraulic cylinder is rotatably connected to the fixed rod, and both ends of the fixed rod are fixedly connected to the first lifting rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, after the driving motor is started, the belt transmission assembly drives the threaded rod to rotate, controls the sliding frame to move linearly in the limiting hole, and then synchronously drives the two driving frames to move. The movement of the driving frame makes the first tooth groove and the second tooth groove act on the first transmission gear and the second transmission gear respectively, pushing the first linkage frame and the third linkage frame to unfold. This process simultaneously drives the movement of the second support plate and the first support plate, and utilizes the free extension and retraction of the telescopic rod to adjust the upper and lower positions of the two support plates, providing stable support and preventing the dump truck from shaking and tilting during the lifting process. Especially when the center of gravity of the car body changes, the auxiliary support ensures the stability of the car body by balancing the car body, reducing the risk of overturning caused by the shift of the center of gravity. On the whole, this design improves the safety and reliability of the lifting operation, adapts to various ground conditions, and ensures the stable operation of the dump truck.

[0019] 2. In the present invention, during the lifting process of the dump truck, the auxiliary mechanism moves downward as a whole through the linkage with the first support plate and the second support plate, thereby increasing the contact area with the ground. When the bottom end of the slide bar touches the ground, the lifting frame drives the lifting plate to move, and the fixed frame slides at the same time to control the swing of the four first swing rods. The movement of these swing rods drives the second rotating sleeve and the fourth rotating sleeve through the movable frame, indirectly controlling the deployment of the first movable plate and the second movable plate, thereby increasing the support area. This design provides more stable support, especially when the dump truck is lifted, by increasing the contact area with the ground, reducing the shaking of the vehicle body, and improving the stability and safety of the operation. It effectively disperses the weight of the vehicle body, prevents the vehicle body from sinking on uneven or soft ground, and ensures the stability and support of the vehicle under various ground conditions.

[0020] 3. In the present invention, during the lifting process of the car body, the movement of the hydraulic cylinder pushes the first lifting rod through the fixed rod, so that the car body is lifted steadily. The first lifting rod and the second support frame work together to transmit force to the car body. At the same time, the second lifting rod helps to unfold and stabilize the car body. The second transmission rod moves with the car body, driving the second half gear to rotate, thereby making the first half gear and the transmission rod move together. Under the restriction of the limit rod, the support member unfolds and provides additional support, so that the first and second transmission rods become a straight state. This coordination mechanism ensures that the car body remains stable during the lifting process to prevent tilting or instability, thereby improving safety and stability. Even if the hydraulic system fails, the support member can still provide additional support to prevent the car body from accidentally falling, especially during maintenance or overhaul, further ensuring operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a separation structure of a car body and a car body of a dump truck lifting device with auxiliary support according to the present invention;

[0022] Figure 2 It is a front view structural schematic diagram of a dump truck lifting device with auxiliary support of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a vehicle body and a supporting mechanism of a lifting device for a dump truck with auxiliary support according to the present invention;

[0024] Figure 4 It is a front view structural schematic diagram of a support mechanism of a lifting device of a dump truck with auxiliary support according to the present invention;

[0025] Figure 5 It is a schematic diagram of the disassembled structure of a support mechanism of a lifting device of a dump truck with auxiliary support according to the present invention;

[0026] Figure 6 It is a structural schematic diagram of an auxiliary mechanism of a dump truck lifting device with auxiliary support according to the present invention;

[0027] Figure 7 It is a schematic diagram of the disassembled structure of an auxiliary mechanism of a lifting device of a dump truck with auxiliary support according to the present invention;

[0028] Figure 8 It is a partial structural schematic diagram of a dump truck lifting device with auxiliary support of the present invention;

[0029] Fig. 9 The present invention is a schematic structural diagram of a support member of a lifting device of a dump truck with auxiliary support.

[0030] In the figure: 1, carriage; 11, first support frame; 12, second support frame; 2, support member; 21, fixed block; 22, limit rod; 23, shell; 24, first transmission rod; 25, second transmission rod; 26, first half gear; 27, second half gear; 3, car body; 31, fixed shaft; 32, first wheel frame; 33, second wheel frame; 34, hydraulic cylinder; 35, first lifting rod; 36, second lifting rod; 37, fixed rod; 38, limit hole; 4, auxiliary mechanism; 41, fixed frame; 42, lifting frame; 43, lifting plate; 44, first swing rod; 45, first movable plate; 451, first rotating sleeve; 452, first Second rotating sleeve; 46, second swing rod; 47, second movable plate; 471, third rotating sleeve; 472, fourth rotating sleeve; 48, sliding rod; 481, rotating frame; 49, movable frame; 5, supporting mechanism; 51, motor frame; 52, telescopic rod; 53, driving motor; 531, belt transmission assembly; 54, threaded rod; 55, sliding frame; 56, driving frame; 561, first tooth groove; 562, second tooth groove; 57, linkage rod; 571, first linkage frame; 572, first transmission gear; 573, second linkage frame; 58, first support plate; 59, second support plate; 591, second transmission gear; 592, third linkage frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Reference Figure 1 - Figure 5 As shown: A lifting device for a dump truck with auxiliary support, comprising a vehicle body 3 and a vehicle compartment 1, an auxiliary mechanism 4 is installed at the bottom of the vehicle body 3, and support members 2 are installed on both sides of the top of the vehicle body 3, and a plurality of support mechanisms 5 are installed at the bottom of the auxiliary mechanism 4;

[0033] The supporting mechanism 5 includes a sliding frame 55, a linkage rod 57 and a second supporting plate 59. Both ends of the sliding frame 55 are fixedly connected to a driving frame 56. A first tooth groove 561 is provided at the bottom of one end of the driving frame 56, and a second tooth groove 562 is provided at the top of the other end of the driving frame 56. One end of the linkage rod 57 is rotatably connected to the first linkage frame 571, and the other end of the linkage rod 57 is rotatably connected to the second linkage frame 573. The outer surface of the top end of the first linkage frame 571 is rotatably connected to the first transmission gear 572, and the first transmission gear 572 is meshed with the first tooth groove 561. The bottom end of the first transmission gear 572 is rotatably connected to the first supporting plate 58. One side of the top end of the first supporting plate 58 is rotatably connected to the bottom end of the second linkage frame 573. One side of the top end of the second supporting plate 59 is rotatably connected to the third linkage frame 592. The top end of the third linkage frame 592 is rotatably connected to the second transmission gear 591, and the second transmission gear 591 is meshed with the second tooth groove 562.

[0034] A motor frame 51 is fixedly connected to the bottom of the vehicle body 3, a driving motor 53 is installed on the top of the motor frame 51, a belt transmission assembly 531 is fixedly connected to the output end of the driving motor 53, a threaded rod 54 is fixedly connected to the top of the belt transmission assembly 531, and the outer surface of one end of the threaded rod 54 is threadedly connected to the middle of the sliding frame 55. A limiting hole 38 is provided at the bottom of the vehicle body 3, both ends of the sliding frame 55 pass through the limiting hole 38, and the sliding frame 55 is slidably connected to the limiting hole 38, and the two sides of the top of the first support plate 58 and the top of the second support plate 59 are fixedly connected to the telescopic rod 52, and the top of the telescopic rod 52 is fixedly connected to the vehicle body 3.

[0035] In this embodiment, when the driving motor 53 is running, the belt transmission assembly 531 starts to move, and drives the threaded rod 54 to rotate, thereby controlling the sliding frame 55 to move linearly along the limiting hole 38. In this process, the sliding frame 55 synchronously drives the two driving frames 56 to move.

[0036] As the driving frame 56 moves, the first tooth groove 561 applies a force to the first transmission gear 572, and the second tooth groove 562 applies a force to the second transmission gear 591, so that the first linkage frame 571 begins to unfold. At the same time, the linkage rod 57 drives the second linkage frame 573 to unfold through the linkage mechanism.

[0037] When the second tooth groove 562 drives the second transmission gear 591 to rotate, the third linkage frame 592 is also expanded, and this action further promotes the expansion of the first transmission gear 572 to control the movement of the second support plate 59. At the same time, the activities of the first linkage frame 571 and the second linkage frame 573 work together to control the movement of the first support plate 58.

[0038] On the basis that the telescopic rod 52 can be freely extended and retracted, the first support plate 58 and the second support plate 59 start to move up and down to ensure that the auxiliary mechanism 4 can contact the ground. This design effectively prevents the dump truck from shaking during the lifting process, provides stable support, and ensures the safety and reliability of the lifting operation. In addition, the center of gravity of the car body 1 of the dump truck will change during the lifting process, and the auxiliary support can help balance the car body 3 to prevent the car body 1 from tilting or overturning due to the shift of the center of gravity.

[0039] Embodiment 2: Figure 6 and Figure 7 As shown, the auxiliary mechanism 4 includes a fixed frame 41, a sliding rod 48 is fixedly connected to the bottom end of the fixed frame 41, a lifting plate 43 is slidably connected to the outer surface of the top end of the sliding rod 48, a first swinging rod 44 is rotatably connected to the outer surface of the lifting plate 43, a movable frame 49 is rotatably connected to the bottom end of the first swinging rod 44, a fourth rotating sleeve 472 and a second rotating sleeve 452 are rotatably connected to the outer surface of the top end of the movable frame 49, and a rotating frame 481 is fixedly connected to the outer surface of the bottom end of the sliding rod 48. The second swinging rod 46 is rotatably connected to the outer surface of the rotating frame 481, the first rotating sleeve 451 and the third rotating sleeve 471 are rotatably connected to the outer surface of the top end of the second swinging rod 46, the first movable plate 45 is fixedly connected between the first rotating sleeve 451 and the second rotating sleeve 452, and the second movable plate 47 is fixedly connected between the third rotating sleeve 471 and the fourth rotating sleeve 472. A lifting frame 42 is arranged above the fixed frame 41, the bottom end of the lifting frame 42 passes through the top of the fixed frame 41, and the bottom of the lifting frame 42 is fixedly connected to the top of the lifting plate 43.

[0040] In this embodiment, the auxiliary mechanism 4 moves downward as a whole while following the movement of the first support plate 58 and the second support plate 59. When the bottom end of the slide bar 48 contacts the ground, the lifting frame 42 starts to drive the lifting plate 43 to move further, and at the same time, the bottom end of the fixing frame 41 slides on the outer surface of the slide bar 48, thereby controlling the swing of the four first swinging rods 44.

[0041] During the movement of the first swing rod 44, the movable frame 49 will also move accordingly. When the movable frame 49 moves relative to the first swing rod 44, it will simultaneously drive the movement of the second rotating sleeve 452 and the fourth rotating sleeve 472, and this action indirectly controls the swing of the first movable plate 45 and the second movable plate 47, so that the two movable plates are unfolded.

[0042] Specifically, the first movable plate 45 transmits the force to the second swing rod 46 through the first rotating sleeve 451, and the second movable plate 47 transmits the force to the second swing rod 46 through the fourth rotating sleeve 472. This transmission causes the second swing rod 46 to rotate under the support of the rotating frame 481, thereby assisting the first movable plate 45 and the second movable plate 47 to unfold and increase the contact area with the ground.

[0043] This design ensures more stable support during the auxiliary support process, especially when the dump truck is lifted, by increasing the contact area with the ground, effectively reducing shaking and improving the stability and safety of the overall operation. It can also more effectively disperse the weight and load of the dump truck to prevent the vehicle from tilting or rolling over due to the upward or offset center of gravity of the car body 1. A larger contact area helps to maintain stability on uneven or soft ground. When the dump truck is operating on soft or muddy ground, a smaller contact area may cause the vehicle body 3 to sink. By expanding the contact area, the weight of the vehicle body 3 can be effectively dispersed, reducing the pressure of the ground on the wheels or support devices, thereby preventing the vehicle from sinking or losing support.

[0044] Embodiment 3: According to Figure 8 and Fig. 9 As shown, the support member 2 includes a fixed block 21, the bottom of the fixed block 21 is fixedly connected to the top of the vehicle body 3, and the side wall of the fixed block 21 is rotatably connected to a first transmission rod 24, a limiting rod 22 is provided on one side of the first transmission rod 24, the bottom end of the limiting rod 22 is rotatably connected to the fixed block 21, and the top end of the limiting rod 22 is rotatably connected to a housing 23. The inner side of the housing 23 is rotatably connected to the top end of the first transmission rod 24, and the inner top end of the housing 23 is rotatably connected to a second transmission rod 25, and the top end of the second transmission rod 25 is rotatably connected to the side wall of the vehicle body 1. The inner side of the bottom end of the second transmission rod 25 is fixedly connected to a second half gear 27, and the inner side of the top end of the first transmission rod 24 is fixedly connected to a first half gear 26, and the first half gear 26 and the second half gear 27 are meshingly connected. A first support frame 11 is fixedly connected to the inner side of one end of the vehicle body 3, and the bottom end of the car body 1 is rotatably connected to the first support frame 11. A second wheel frame 33, a first wheel frame 32 and a fixed shaft 31 are fixedly connected to the bottom of the vehicle body 3. A hydraulic cylinder 34 is rotatably connected to the middle of the fixed shaft 31, and both ends of the fixed shaft 31 are rotatably connected to a second lifting rod 36. The top end of the second lifting rod 36 is rotatably connected to the first lifting rod 35. The top end of the first lifting rod 35 is rotatably connected to the second support frame 12. The second support frame 12 is fixedly connected to the bottom of the car body 1. A fixed rod 37 is rotatably connected to the output end of the hydraulic cylinder 34, and both ends of the fixed rod 37 are fixedly connected to the first lifting rod 35.

[0045] In this embodiment, during the lifting process, the hydraulic cylinder 34 starts to move, and the fixed rod 37 starts to move by pushing it. The fixed rod 37 transmits the force to the first lifting rod 35, so that the two first lifting rods 35 transmit the force to the car body 1 through the second support frame 12. At the same time, the existence of the second lifting rod 36 makes the first lifting rod 35 and the second lifting rod 36 unfold, assisting the fixed rod 37 in controlling the lifting process of the car body 1.

[0046] During the lifting process of the carriage 1, the second transmission rod 25 moves with the carriage 1, thereby driving the second half gear 27 to rotate, which in turn causes the first half gear 26 to start moving, causing the second transmission rod 25 to rotate together with the first transmission rod 24. Under the action of the limit rod 22, the housing 23 can only be supported by the limit rod 22, so that the support member 2 is unfolded from the folded state.

[0047] The deployment of the support member 2 causes the first transmission rod 24 and the second transmission rod 25 to be in a straight state, providing additional support for the carriage 1. The entire system coordinates the actions of these components to ensure that the carriage 1 is stably supported during the lifting process, preventing the carriage 1 from tilting or becoming unstable due to lack of support, thereby improving the safety and stability of the lifting operation. In the event of failure of the hydraulic system or insufficient pressure, it can provide additional support to prevent the carriage 1 from falling suddenly, protect the hydraulic cylinder 34 and other mechanical components, and provide additional safety during the lifting process to prevent the carriage 1 from accidentally sliding down and reduce the risk of accidents, especially when performing maintenance or overhaul, it plays a role in preventing the carriage 1 from accidentally falling.

[0048] The use method and working principle of the device: When the driving motor 53 is running, it will drive the belt transmission assembly 531, so that the threaded rod 54 rotates, and the sliding frame 55 is controlled to move linearly under the restriction of the limit hole 38. The movement of the sliding frame 55 will simultaneously drive the two driving frames 56. The movement of the driving frame 56 causes the first tooth groove 561 to apply a force to the first transmission gear 572, and the second tooth groove 562 to apply a force to the second transmission gear 591, pushing the first linkage frame 571 to unfold. In this process, the second linkage frame 573 will also unfold through the linkage rod 57. The second tooth groove 562 causes the second transmission gear 591 to rotate, thereby driving the third linkage frame 592 to unfold, controlling the movement of the second support plate 59, and at the same time, the first linkage frame 571 and the second linkage frame 573 control the movement of the first support plate 58. Based on the free extension and retraction of the telescopic rod 52, the first support plate 58 and the second support plate 59 will start to move up and down, thereby controlling the auxiliary mechanism 4 to contact the ground, provide support, and prevent shaking during the lifting process.

[0049] The auxiliary mechanism 4 moves downward as a whole while following the movement of the first support plate 58 and the second support plate 59. When the bottom end of the slide bar 48 contacts the ground, the lifting frame 42 drives the lifting plate 43 to continue to move, and the bottom end of the fixed frame 41 slides on the outer surface of the slide bar 48 to control the swing of the four first swinging rods 44. The movement of the first swinging rod 44 controls the movable frame 49, and the movement of the movable frame 49 simultaneously controls the second rotating sleeve 452 and the fourth rotating sleeve 472, indirectly controlling the deployment of the first movable plate 45 and the second movable plate 47. The first movable plate 45 transmits the force to the second swinging rod 46 through the first rotating sleeve 451, and the second movable plate 47 transmits the force to the second swinging rod 46 through the fourth rotating sleeve 472, so that the second swinging rod 46 rotates relative to the rotating frame 481, thereby assisting the deployment of the first movable plate 45 and the second movable plate 47. This process increases the contact area with the ground, more effectively disperses the weight and load of the dump truck, and prevents the center of gravity of the car body 1 from moving up or shifting to cause tilting or overturning.

[0050] During the lifting process, the hydraulic cylinder 34 starts to move, pushing the fixed rod 37 to transmit the force to the first lifting rod 35, and the two first lifting rods 35 transmit the force to the car 1 through the second support frame 12. The second lifting rod 36 assists in unfolding the first lifting rod 35, thereby controlling the lifting of the car 1. The second transmission rod 25 moves with the car 1, and drives the first half gear 26 through the second half gear 27, causing the second transmission rod 25 and the first transmission rod 24 to rotate. Under the action of the limit rod 22, the housing 23 is supported by the limit rod 22, so that the support member 2 is unfolded from the folded state, and the first transmission rod 24 and the second transmission rod 25 are in a straight state to provide support for the car 1. When the hydraulic system fails or the pressure is insufficient, the auxiliary support can provide additional support to prevent the car 1 from falling suddenly, protect the hydraulic cylinder 34 and other mechanical parts, and increase safety during the lifting process to prevent the car 1 from accidentally sliding down and reduce the risk of accidents.

[0051] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dump truck lifting device with auxiliary support, comprising a vehicle body (3) and a vehicle compartment (1), characterized in that: An auxiliary mechanism (4) is installed at the bottom of the vehicle body (3), and support members (2) are installed on both sides of the top of the vehicle body (3), and a plurality of support mechanisms (5) are installed at the bottom of the auxiliary mechanism (4); The support mechanism (5) comprises a sliding frame (55), a linkage rod (57) and a second support plate (59); both ends of the sliding frame (55) are fixedly connected to a driving frame (56); a first tooth groove (561) is provided at the bottom of one end of the driving frame (56), and a second tooth groove (562) is provided at the top of the other end of the driving frame (56); one end of the linkage rod (57) is rotatably connected to a first linkage frame (571), and the other end of the linkage rod (57) is rotatably connected to a second linkage frame (573); the outer surface of the top end of the first linkage frame (571) is rotatably connected to the first linkage frame (571); A first transmission gear (572) is provided, the first transmission gear (572) is meshedly connected with the first tooth groove (561), the bottom end of the first transmission gear (572) is rotatably connected with the first support plate (58), the top side of the first support plate (58) is rotatably connected with the bottom end of the second linkage frame (573), the top side of the second support plate (59) is rotatably connected with the third linkage frame (592), the top end of the third linkage frame (592) is rotatably connected with the second transmission gear (591), and the second transmission gear (591) is meshedly connected with the second tooth groove (562).

2. A dump truck lifting device with auxiliary support according to claim 1, characterized in that: The bottom of the vehicle body (3) is fixedly connected to a motor frame (51), the top of the motor frame (51) is equipped with a driving motor (53), the output end of the driving motor (53) is fixedly connected to a belt transmission assembly (531), the top of the belt transmission assembly (531) is fixedly connected to a threaded rod (54), and the outer surface of one end of the threaded rod (54) is threadedly connected to the middle of the sliding frame (55).

3. A dump truck lifting device with auxiliary support according to claim 2, characterized in that: A limiting hole (38) is provided at the bottom of the vehicle body (3), both ends of the sliding frame (55) pass through the limiting hole (38), and the sliding frame (55) is slidably connected to the limiting hole (38), and both sides of the top of the first support plate (58) and the top of the second support plate (59) are fixedly connected with telescopic rods (52), and the top of the telescopic rods (52) is fixedly connected to the vehicle body (3).

4. The dump truck lifting device with auxiliary support according to claim 1, characterized in that: The auxiliary mechanism (4) comprises a fixed frame (41), the bottom end of the fixed frame (41) is fixedly connected to a sliding rod (48), the top outer surface of the sliding rod (48) is slidably connected to a lifting plate (43), the outer surface of the lifting plate (43) is rotatably connected to a first swinging rod (44), the bottom end of the first swinging rod (44) is rotatably connected to a movable frame (49), the top outer surface of the movable frame (49) is rotatably connected to a fourth rotating sleeve (472) and a second rotating sleeve (452), and the bottom outer surface of the sliding rod (48) is fixedly connected to a rotating frame (481).

5. A dump truck lifting device with auxiliary support according to claim 4, characterized in that: The outer surface of the rotating frame (481) is rotatably connected to a second swing rod (46); the outer surface of the top end of the second swing rod (46) is rotatably connected to a first rotating sleeve (451) and a third rotating sleeve (471); a first movable plate (45) is fixedly connected between the first rotating sleeve (451) and the second rotating sleeve (452); and a second movable plate (47) is fixedly connected between the third rotating sleeve (471) and the fourth rotating sleeve (472).

6. A dump truck lifting device with auxiliary support according to claim 5, characterized in that: A lifting frame (42) is arranged above the fixed frame (41), the bottom end of the lifting frame (42) passes through the top of the fixed frame (41), and the bottom of the lifting frame (42) is fixedly connected to the top of the lifting plate (43).

7. The tipper truck lifting device with auxiliary support according to claim 1, characterized in that: The support member (2) comprises a fixed block (21), the bottom of the fixed block (21) is fixedly connected to the top of the vehicle body (3), and the side wall of the fixed block (21) is rotatably connected to a first transmission rod (24), a limiting rod (22) is provided on one side of the first transmission rod (24), the bottom end of the limiting rod (22) is rotatably connected to the fixed block (21), and the top end of the limiting rod (22) is rotatably connected to a housing (23).

8. The tipper truck lifting device with auxiliary support according to claim 7, characterized in that: The inner side of the shell (23) is rotatably connected to the top end of the first transmission rod (24), and the inner side top end of the shell (23) is rotatably connected to the second transmission rod (25), and the top end of the second transmission rod (25) is rotatably connected to the side wall of the carriage (1).

9. A dump truck lifting device with auxiliary support according to claim 8, characterized in that: A second half gear (27) is fixedly connected to the inner side of the bottom end of the second transmission rod (25), a first half gear (26) is fixedly connected to the inner side of the top end of the first transmission rod (24), and the first half gear (26) and the second half gear (27) are meshingly connected.

10. The tipper truck lifting device with auxiliary support according to claim 1, characterized in that: A first support frame (11) is fixedly connected to the inner side of one end of the vehicle body (3); the bottom end of the vehicle compartment (1) is rotatably connected to the first support frame (11); the bottom of the vehicle body (3) is fixedly connected to a second wheel frame (33), a first wheel frame (32) and a fixed shaft (31); a hydraulic cylinder (34) is rotatably connected to the middle of the fixed shaft (31); and both ends of the fixed shaft (31) are rotatably connected to a second lifting rod (36); the top end of the second lifting rod (36) is rotatably connected to the first lifting rod (35); the top end of the first lifting rod (35) is rotatably connected to the second support frame (12); the second support frame (12) is fixedly connected to the bottom of the vehicle compartment (1); the output end of the hydraulic cylinder (34) is rotatably connected to a fixed rod (37); and both ends of the fixed rod (37) are fixedly connected to the first lifting rod (35).

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