Earth cutting vehicle

Abstract

The utility model discloses an earth cutting vehicle, and belongs to the technical field of building construction. Comprising a vehicle body; the digging head mechanism comprises a rotary digging head and a driving arm assembly, and the rotary digging head is connected with the vehicle body through the driving arm assembly; the first conveying belt is arranged on the driving arm assembly, the rotary digging head is located at the front end of the first conveying belt, the rotary digging head and the first conveying belt are close to each other, and an included angle is formed between the rotary digging head and the first conveying belt; the conveying mechanism is arranged on the vehicle body, and the end, away from the rotary digging head, of the first conveying belt is in butt joint with the conveying mechanism. The earth cutting vehicle has the excavating function and the earthwork conveying function at the same time, a transporter does not need to be arranged to carry earthwork independently, and only the earthwork transporter needs to be arranged outside a construction site to be in butt joint with the conveying mechanism of the earth cutting vehicle, so that only the earth cutting vehicle carries out excavating work on the whole excavating site; the problems of time waste and low efficiency caused by the fact that a single transporter enters and exits a construction site in traditional construction are solved, and the overall construction efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and specifically relates to an excavator. Background Technology

[0002] When carrying out excavation projects for underground spaces such as basements, parking lots, and subway stations, traditional construction methods rely on the coordinated work of excavators and transport machines.

[0003] Existing excavators and transporters are independent devices. In actual operation, the excavator performs the digging, while the transporter needs to enter the construction site to move the excavated soil outwards.

[0004] However, when multiple transport vehicles are involved in earthmoving at the same time, traffic congestion is easily caused due to limited on-site space, forcing the excavators to stop working and wait for the transport vehicles to finish loading and leave. This work stoppage seriously affects the overall construction progress and reduces work efficiency. Utility Model Content

[0005] This utility model addresses the aforementioned problems in the existing technology by proposing a dump truck that integrates excavation and earthmoving functions.

[0006] This utility model can be achieved through the following technical solutions:

[0007] An excavator includes:

[0008] Vehicle body;

[0009] A digging mechanism, comprising a rotary digging head and a drive arm assembly, wherein the rotary digging head is connected to the vehicle body via the drive arm assembly;

[0010] A first conveyor belt is mounted on the drive arm assembly, and the rotary excavator is located at the front end of the first conveyor belt and the two are close to each other, with an angle formed between the rotary excavator and the first conveyor belt.

[0011] A conveying mechanism is mounted on the vehicle body, with the end of the first conveyor belt away from the rotary excavator connected to the conveying mechanism.

[0012] As a further improvement of this utility model, a support frame is provided at the front end of the vehicle body, and the drive arm assembly is connected to the support frame.

[0013] As a further improvement of this utility model, the drive arm assembly includes a rotating arm and a first hydraulic rod. One end of the first hydraulic rod is hinged to the support frame, and the other end of the first hydraulic rod is hinged to the end of the rotating arm away from the rotary excavator head. At the same time, the bottom of the rotating arm is hinged to the end of the support frame.

[0014] As a further improvement of this utility model, the first conveyor belt is disposed inside the rotating arm, and a plurality of baffles are arranged at intervals on the first conveyor belt.

[0015] As a further improvement of this utility model, the conveying mechanism includes a front conveying frame, a middle conveying frame, and a rear conveying frame, wherein,

[0016] The front conveying frame is disposed at the bottom of the support frame and located at the front end of the vehicle body;

[0017] The rear transport frame is located at the rear end of the vehicle body;

[0018] The central conveyor frame is inclined and located on the vehicle body.

[0019] As a further improvement of this utility model, the front conveying frame, the middle conveying frame, and the rear conveying frame are respectively provided with a front conveyor belt, a middle conveyor belt, and a rear conveyor belt, wherein the feeding end of the middle conveyor belt is located at the bottom of the front conveyor belt, and the discharging end of the middle conveyor belt is located at the top of the rear conveyor belt.

[0020] As a further improvement of this utility model, the vehicle body is also provided with an adjustment frame. One end of the adjustment frame is hinged to the vehicle body, and the other end is connected to the rear conveying frame. A first active rotating component is provided at the connection point. The first active rotating component is driven to rotate by a motor, thereby driving the rear conveying frame to rotate.

[0021] As a further improvement of this utility model, it also includes a second hydraulic rod and a third hydraulic rod, wherein,

[0022] The rotating end of the second hydraulic rod is hinged to the vehicle body, and its telescopic shaft is connected to the end of the adjusting frame near the rear conveying frame. The second hydraulic rod drives the adjusting frame to rotate in order to adjust the height of the rear conveying frame.

[0023] The rotating end of the third hydraulic rod is connected to the adjusting frame, and its telescopic shaft is connected to the support frame. At the same time, the support frame is hinged to the adjusting frame, and the support frame is driven to rotate by the third hydraulic rod.

[0024] As a further improvement of this utility model, the surface of the rotary digging head is provided with a rotary track, and a number of digging plates are arranged at intervals on the rotary track, and the outer edge of the digging plate is provided with a toothed structure.

[0025] The front end of the rotary excavator is also provided with a baffle, and there is a space between the baffle and the rotary excavator. The lower edge of the baffle is set as an arc surface and bends toward the direction of the rotary excavator.

[0026] As a further improvement of this utility model, the vehicle body is provided with a counterweight mechanism, which includes a fixed frame, a rotating frame and a drive motor. One end of the rotating frame is connected to the fixed frame through a second active rotating component, and the other end of the rotating frame is provided with a counterweight block. The drive motor drives the rotating component to rotate, thereby driving the rotating frame to rotate.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The excavator has both excavation and earthmoving functions. There is no need to arrange a separate transporter for earthmoving at the construction site. It is only necessary to set up an earthmoving transporter outside the construction site to connect with the transport mechanism of the excavator. This allows only the excavator to carry out the excavation work at the entire excavation site, avoiding the time waste and low efficiency caused by separate transporters entering and leaving the construction site in traditional construction, and greatly improving the overall construction efficiency.

[0029] 2. The entire drive arm assembly is a double-joint structure. The connection between the first hydraulic rod and the support frame is the first rotary joint, and the connection between the rotating arm and the first hydraulic rod is the second rotary joint. This double-joint structure design gives the drive arm assembly a larger range of motion, especially the vertical extension capability is greatly enhanced, which can realize effective excavation in deeper locations. This is especially important for projects that require deep excavation, such as basements and subway stations. On the other hand, it also improves the flexibility of machine operation and allows for more precise control of the position and posture of the rotary excavator head.

[0030] 3. By using a receiver mounted on the vehicle body and sensors mounted on the rotary excavator head, the current depth of the rotary excavator head is automatically calculated. This real-time depth monitoring system significantly improves the operating accuracy and safety of the excavator, especially in underground space excavation projects, such as the construction of basements and subway stations. Precise depth monitoring can help avoid over-excavation or under-excavation, ensuring project quality while reducing repair costs. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of the excavator of this utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the excavator of this utility model after it is connected with an external transition transport vehicle and a telescopic transport vehicle to form a vehicle system.

[0033] In the diagram, 100 is the vehicle body; 110 is the rotary excavator head; 111 is the rotary track; 112 is the excavator plate; 113 is the baffle; 120 is the drive arm assembly; 121 is the rotating arm; 122 is the first hydraulic rod; 130 is the first conveyor belt; 131 is the baffle plate; 140 is the support frame; 150 is the front conveyor frame; 151 is the front conveyor belt; 160 is the middle conveyor frame; 161 is the middle conveyor belt; 170 is the rear conveyor frame; 171 is the rear conveyor belt; 172 is the first active rotary component; 180 is the adjusting frame; 181 is the first hydraulic rod; 182 is the second hydraulic rod; 190 is the counterweight mechanism; 191 is the fixed frame; 192 is the rotary frame; 193 is the second active rotary component; 194 is the counterweight block; 200 is the transition conveyor vehicle; and 300 is the telescopic conveyor vehicle. Detailed Implementation

[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0035] like Figure 1-2 As shown, this utility model provides an excavator, comprising:

[0036] The vehicle body 100 serves as the basic platform for the entire machine, supporting and bearing all other components.

[0037] The excavator mechanism includes a rotary excavator 110 and a drive arm assembly 120. The rotary excavator 110 is connected to the vehicle body 100 through the drive arm assembly 120, and can realize multi-angle excavation actions.

[0038] The first conveyor belt 130 is mounted on the drive arm assembly 120. The rotary excavator 110 is located at the front end of the first conveyor belt 130 and the two are close to each other. An angle is formed between the rotary excavator 110 and the first conveyor belt 130. When the soil excavated by the rotary excavator 110 is lifted and falls, it will naturally fall onto the first conveyor belt 130.

[0039] The conveying mechanism is mounted on the vehicle body 100, and the end of the first conveyor belt 130 away from the rotary excavator 110 is connected to the conveying mechanism.

[0040] Specifically, during the actual excavation process, the rotary excavator head 110 continuously rotates, and the excavated soil is lifted upwards as the rotary excavator head 110 rotates, and naturally falls into the first conveyor belt 130 under the action of gravity. The first conveyor belt 130 then transfers the soil to the conveying mechanism for further transport.

[0041] It is worth mentioning that, because the excavator in this embodiment has both excavation and earthmoving functions, there is no need to arrange a separate transporter for earthmoving at the construction site. Instead, an earthmoving transporter can be set up outside the construction site to connect with the transport mechanism of the excavator. This allows only the excavator to carry out the excavation work at the entire excavation site, avoiding the time waste and inefficiency caused by separate transporters entering and leaving the construction site in traditional construction, and greatly improving the overall construction efficiency.

[0042] For example Figure 2 As shown, in practical applications, in order to achieve long-distance earthmoving and unloading, the excavator can first dock with the transition conveyor 200, and then the transition conveyor 200 docks with the telescopic conveyor 300. The telescopic conveyor 300 acts as the final earthmoving machine and transports the earth to the designated unloading point, thus forming a complete vehicle system for earthmoving, conveying and unloading.

[0043] Preferably, the front end of the vehicle body 100 is provided with a support frame 140, and the drive arm assembly 120 is connected to the support frame 140. Specifically, the drive arm assembly 120 includes a rotating arm 121 and a first hydraulic rod 122. One end of the first hydraulic rod 122 is hinged to the support frame 140, and the other end of the first hydraulic rod 122 is hinged to the end of the rotating arm 121 away from the rotary excavator head 110. At the same time, the bottom of the rotating arm 121 is hinged to the end of the support frame 140.

[0044] In other words, the entire drive arm assembly 120 is a double-joint structure. The connection between the first hydraulic rod 122 and the support frame 140 is the first rotary joint, and the connection between the rotating arm 121 and the first hydraulic rod 122 is the second rotary joint. This double-joint structure design gives the drive arm assembly 120 a larger range of motion, especially its vertical extension capability is greatly enhanced, which can achieve effective excavation at deeper locations. This is particularly important for projects that require deep excavation, such as basements and subway stations. On the other hand, it also improves the flexibility of machine operation and allows for more precise control of the position and posture of the rotary excavator head 110.

[0045] Preferably, the first conveyor belt 130 is disposed inside the rotating arm 121, and a plurality of baffles 131 are arranged at intervals on the first conveyor belt 130. Specifically, after the rotary excavator 110 lifts the excavated soil upward, it will automatically fall onto the first conveyor belt 130. Then the soil can be automatically transported to the conveying mechanism through the first conveyor belt 130. The baffles 131 ensure that no matter what angle the rotating arm 121 is in, the soil can be transported along the first conveyor belt 130 without falling off.

[0046] Preferably, the conveying mechanism includes a front conveying frame 150, a middle conveying frame 160, and a rear conveying frame 170, wherein,

[0047] The front conveyor frame 150 is located at the bottom of the support frame 140 and at the front end of the vehicle body 100;

[0048] The rear conveyor frame 170 is located at the rear end of the vehicle body 100;

[0049] The central conveyor frame 160 is tilted and located on the vehicle body 100.

[0050] Furthermore, the front conveyor frame 150, the middle conveyor frame 160, and the rear conveyor frame 170 are respectively provided with a front conveyor belt 151, a middle conveyor belt 161, and a rear conveyor belt 171. The feed end of the middle conveyor belt 161 is located at the bottom of the front conveyor belt 151, and the discharge end of the middle conveyor belt 161 is located at the top of the rear conveyor belt 171.

[0051] Specifically, in actual work, the earthwork transportation process is as follows:

[0052] 1. Initial earthwork conveying: After the rotary excavator 110 completes excavation and lifts the earthwork, the earthwork will automatically fall onto the first conveyor belt 130. As the first conveyor belt 130 moves, the earthwork is further conveyed onto the front conveyor belt 151.

[0053] 2. Transition and lifting of earthwork: The front conveyor belt 151 delivers the earthwork to its end, where it naturally falls to the feed end of the middle conveyor belt 161. Since the middle conveyor belt 161 is inclined, it can effectively lift the earthwork upward and overcome the height difference, ensuring that the earthwork smoothly reaches the higher rear conveyor belt 171.

[0054] 3. Final transport and unloading of earthwork: After being lifted by the middle conveyor belt 161, the earthwork reaches the top of the rear conveyor belt 171, and is then transported outward by the rear conveyor belt 171, and finally unloaded to dock with other handling equipment, such as the transition conveyor 200 and the telescopic conveyor 300.

[0055] Preferably, the vehicle body 100 is also provided with an adjustment frame 180. One end of the adjustment frame 180 is hinged to the vehicle body 100, and the other end is connected to the rear conveyor frame 170. A first active rotating component 172 is provided at the connection point. The first active rotating component 172 is driven to rotate by a motor (not shown in the figure), which in turn drives the rear conveyor frame 170 to rotate. In other words, the setting of the first active rotating component 172 allows the rear conveyor belt 171 to be adjusted in direction according to actual needs, while the excavator itself does not need to rotate or move, thus better adapting to the layout of different construction sites.

[0056] Furthermore, it also includes a second hydraulic rod 181 and a second hydraulic rod 182, wherein,

[0057] The rotating end of the second hydraulic rod 182 is hinged to the vehicle body 100, and its telescopic shaft is connected to the end of the adjusting frame 180 near the rear conveying frame 170. The second hydraulic rod 182 drives the adjusting frame 180 to rotate up and down to adjust the height of the rear conveying frame 170 so that the excavator 100 can dock with the external transition conveying vehicle 200 under different terrain conditions.

[0058] The rotating end of the third hydraulic rod 181 is connected to the adjusting frame 180, and its telescopic shaft is connected to the support frame 140. At the same time, the support frame 140 is hinged to the adjusting frame 180. The support frame 140 is driven to rotate by the third hydraulic rod 181. The setting of the third hydraulic rod 181 further expands the range of motion of the rotary excavator 110, thereby expanding its maximum digging depth.

[0059] Preferably, the rotary excavator head 110 has a rotary track 111 on its surface, and a number of digging plates 112 are arranged at intervals on the rotary track 111. The outer edge of the digging plate 112 is set with a toothed structure. The toothed structure of the digging plate 112 can cut into the ground more easily during the rotation of the rotary track 111, reduce digging resistance, improve digging efficiency, and also lift the excavated soil along the rotary track 111 through the digging plate 112 until it finally falls into the first conveyor belt 130.

[0060] In addition, the front end of the rotary excavator 110 is also equipped with a baffle 113. The baffle 113 is designed to prevent soil from falling and ensure that the rotary excavator 110 can smoothly lift the excavated soil upward. The lower edge of the baffle 113 is set as an arc surface and bends in the direction of the rotary excavator 110. This design helps to guide the flow path of the soil.

[0061] Preferably, the vehicle body 100 is provided with a counterweight mechanism 190, which includes a fixed frame 191, a rotating frame 192 and a drive motor (not shown in the figure). One end of the rotating frame 192 is connected to the fixed frame 191 through a second active rotating component 193, and the other end of the rotating frame 192 is provided with a counterweight block 194. The rotating component is driven to rotate by the drive motor, thereby driving the rotating frame 192 to rotate.

[0062] The counterweight mechanism 190 can be dynamically adjusted according to the actual working conditions to ensure that the excavator always maintains a good center of gravity position during operation, preventing tilting or instability caused by material transmission. Especially when operating on uneven ground or under high load conditions, the counterweight mechanism 190 can effectively counteract the influence of external torque, improving the stability and safety of the entire system.

[0063] Preferably, the vehicle body 100 is equipped with a gyroscope (not shown in the figure) in the direction of its center of gravity. The gyroscope monitors the tilt angle and rotation rate of the vehicle body relative to the horizontal plane in real time and transmits them to the control system. The control system automatically controls the drive motor to adjust the position of the counterweight 194.

[0064] Through real-time monitoring by the gyroscope, the control system can accurately grasp the tilt and rotation of the vehicle body 100, thereby enabling fine-tuning of the position of the counterweight 194. This ensures that the equipment maintains optimal balance under various working conditions. The automated control system reduces reliance on operators, lowers the possibility of human error, and reduces the workload of operators. It not only ensures the smooth transportation of earthwork but also protects the safety of operators and the construction site.

[0065] In addition, this excavator is equipped with a real-time depth monitoring system, as detailed below:

[0066] 1. System Composition

[0067] Distance sensor: Installed on the rotary excavator head, used to accurately measure the distance between the rotary excavator head and the ground or other reference objects.

[0068] Data transmission module: responsible for wirelessly or wiredly transmitting the data collected by the ranging sensor to the receiver on the vehicle body.

[0069] Receiver: Located inside the vehicle, it receives data from the ranging sensor and converts it into visualized depth information through an internal processing unit.

[0070] Display screen: Located in the control room, it is used to display the current depth of the rotary excavator and other relevant information in real time.

[0071] 2. Arrangement of ranging sensors

[0072] Multi-point ranging: Multiple ranging sensors (e.g., three or more) are installed on the rotary excavator head, distributed at different locations, to ensure accurate measurement of depth at different angles. These sensors can be ultrasonic sensors, laser rangefinders, or infrared rangefinders, etc., depending on the application scenario and accuracy requirements.

[0073] 3. Data Processing and Transmission

[0074] Signal processing: Each ranging sensor is equipped with its own microprocessor for preliminary processing of the raw ranging data, such as filtering and calibration.

[0075] Wireless / Wired Communication: Processed data is transmitted to a receiver inside the vehicle via wireless (e.g., Wi-Fi, Bluetooth, Zigbee) or wired (e.g., CAN bus, Ethernet) methods. A suitable communication protocol is selected to ensure the stability and real-time performance of data transmission.

[0076] 4. Receiving and Displaying

[0077] Reception and Decoding: After receiving the ranging data, the receiver inside the vehicle decodes and processes it to calculate the specific depth of the rotary excavator.

[0078] Visual interface: The depth information of the rotary excavator is presented intuitively on the screen in the control room. Various formats can be used, including digital displays, graphical representations (such as analog dashboards), and color coding, to help operators quickly understand the current working status.

[0079] Workflow

[0080] Initialization: After power-on, all ranging sensors perform self-tests to confirm that they are in good working order; at the same time, the control room screen initializes to prepare for receiving and displaying depth information.

[0081] Real-time monitoring: When the rotary excavator starts working, each ranging sensor continuously collects depth data and sends it to the receiver via the data transmission module. The receiver processes the received data and updates the depth information displayed on the control room screen in real time.

[0082] Feedback control: The operator adjusts the digging action based on the depth information displayed on the screen to ensure that the operation meets the design requirements.

[0083] This real-time depth monitoring system significantly improves the operational precision and safety of excavators, especially in underground excavation projects such as basements and subway stations. Precise depth monitoring helps avoid over- or under-excavation, ensuring project quality while reducing repair costs. The efficient monitoring system, combined with advanced excavation and conveying technologies, forms a complete earthwork excavation, conveying, and unloading system, further optimizing the construction process and improving overall construction efficiency.

[0084] In addition, the vehicle body 100 is also equipped with an engine and an electric motor. On the way to the construction site, the engine is used as the power system, and after arriving at the construction site, the electric motor can be used as the power system to save costs.

[0085] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0086] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0087] Furthermore, in this utility model, descriptions involving "", "a", "one", etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "" or "a" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0088] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A dump truck, characterized in that, include: Vehicle body; A digging mechanism, comprising a rotary digging head and a drive arm assembly, wherein the rotary digging head is connected to the vehicle body via the drive arm assembly; A first conveyor belt is mounted on the drive arm assembly, and the rotary excavator is located at the front end of the first conveyor belt and the two are close to each other, with an angle formed between the rotary excavator and the first conveyor belt. A conveying mechanism is mounted on the vehicle body, with the end of the first conveyor belt away from the rotary excavator connected to the conveying mechanism.

2. The excavator according to claim 1, characterized in that, The front end of the vehicle body is provided with a support frame, and the drive arm assembly is connected to the support frame.

3. The excavator according to claim 2, characterized in that, The drive arm assembly includes a rotating arm and a first hydraulic rod. One end of the first hydraulic rod is hinged to the support frame, and the other end of the first hydraulic rod is hinged to the end of the rotating arm away from the rotary excavator head. At the same time, the bottom of the rotating arm is hinged to the end of the support frame.

4. A dump truck according to claim 3, characterized in that, The first conveyor belt is disposed inside the rotating arm, and several baffles are arranged at intervals on the first conveyor belt.

5. A dump truck according to claim 3, characterized in that, The conveying mechanism includes a front conveying frame, a middle conveying frame, and a rear conveying frame, wherein... The front conveying frame is disposed at the bottom of the support frame and located at the front end of the vehicle body; The rear transport frame is located at the rear end of the vehicle body; The central conveyor frame is inclined and located on the vehicle body.

6. A dump truck according to claim 5, characterized in that, The front conveyor frame, the middle conveyor frame, and the rear conveyor frame are respectively provided with a front conveyor belt, a middle conveyor belt, and a rear conveyor belt, wherein the feed end of the middle conveyor belt is located at the bottom of the front conveyor belt, and the discharge end of the middle conveyor belt is located at the top of the rear conveyor belt.

7. A dump truck according to claim 5, characterized in that, The vehicle body is also equipped with an adjustment frame. One end of the adjustment frame is hinged to the vehicle body, and the other end is connected to the rear conveying frame. A first active rotating component is provided at the connection point. The first active rotating component is driven to rotate by a motor, thereby driving the rear conveying frame to rotate.

8. A dump truck according to claim 7, characterized in that, It also includes a second hydraulic rod and a third hydraulic rod, wherein, The rotating end of the second hydraulic rod is hinged to the vehicle body, and its telescopic shaft is connected to the end of the adjusting frame near the rear conveying frame. The second hydraulic rod drives the adjusting frame to rotate up and down to adjust the height of the rear conveying frame. The rotating end of the third hydraulic rod is connected to the adjusting frame, and its telescopic shaft is connected to the support frame. At the same time, the support frame is hinged to the adjusting frame, and the support frame is driven to rotate up and down by the third hydraulic rod.

9. A dump truck according to claim 1, characterized in that, The rotary digger head is provided with a rotary track on its surface, and a number of digging plates are arranged at intervals on the rotary track. The outer edge of the digging plate is provided with a toothed structure. The front end of the rotary excavator is also provided with a baffle, and there is a space between the baffle and the rotary excavator. The lower edge of the baffle is set as an arc surface and bends toward the direction of the rotary excavator.

10. A dump truck according to claim 1, characterized in that, The vehicle body is equipped with a counterweight mechanism, which includes a fixed frame, a rotating frame, and a drive motor. One end of the rotating frame is connected to the fixed frame through a second active rotating component, and the other end of the rotating frame is equipped with a counterweight block. The drive motor drives the rotating component to rotate, thereby causing the rotating frame to rotate.

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