Self-adaptive hydraulic tensioning belt conveyor cooperatively driven by double motors

Abstract

The invention discloses a self-adaptive hydraulic tensioning belt conveyor driven by double motors in a coordinated mode. The self-adaptive hydraulic tensioning belt conveyor comprises a driving system, a hydraulic connecting rod system and a pressure monitoring and data processing system. The pressure sensor obtains pressure signals of the left end and the right end, and the data receiver calculates the average pressure and the pressure difference based on the pressure signals and controls the hydraulic connecting rod to stretch out and draw back so that the average pressure can be kept within a target tensioning interval. When the pressure difference exceeds a preset safety threshold value, the hydraulic connecting rod is driven to swing towards the light load side and is matched with telescopic adjustment to achieve stress balance of the two ends. And meanwhile, the output power of the double motors is adjusted in a coordinated mode according to pressure feedback, so that the slipping risk during start-stop and working condition change is reduced, conveying stability and efficiency are improved, and energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of mechanical transportation, and more specifically, to a dual-motor power coordinated drive belt conveyor with hydraulic tensioning function. Background Technology

[0002] Conveyors are core equipment in modern material handling systems. With their continuous operation, high efficiency, and high level of automation, they are widely used in industrial manufacturing, energy and mining, transportation infrastructure, and modern logistics, serving as a key infrastructure for achieving large-scale production and systematic operation. As my country's manufacturing industry transforms towards high-end, intelligent, and green development, and as infrastructure upgrades towards modernization and digitalization, the technological demands on material handling equipment are increasing. In particular, the growing demand for conveying in resource development, energy transportation, and large-scale engineering construction places higher requirements on the reliability, energy efficiency, intelligent control, and system integration capabilities of conveyors. Consequently, conveyors are continuously evolving towards larger scale, higher intelligence, and greener, lower-carbon designs, further highlighting their strategic importance in the modern industrial system.

[0003] Among various continuous conveyors, belt conveyors are the most widely chosen due to their mature structure and stable operation. This equipment boasts advantages such as low resistance, low energy consumption, minimal wear, and easy maintenance, enabling stable operation around the clock and finding widespread application in high-load scenarios such as mines, ports, and industrial production. Compared to manual handling or intermittent conveying methods, belt conveyors not only improve transportation efficiency, reduce costs and material losses, but also improve the working environment and safety. From an energy efficiency perspective, their energy consumption per unit of material transport is far lower than that of road transport, resulting in significant energy savings over long-term operation. This makes them an important technological means to promote efficient, low-consumption, and green development in industrial systems. Nevertheless, existing belt conveyors still have some limitations in practical applications, especially under start-up, shutdown, and variable load transport conditions, making it difficult to fully realize their high-efficiency transmission and energy-saving potential, as shown in Table 1.

[0004] Therefore, achieving efficient conveying, preventing slippage, and optimizing energy utilization during the start-up, operation, and shutdown of conveyors are of great significance for improving industrial production efficiency, reducing operating costs, extending equipment lifespan, and promoting green and intelligent manufacturing. This invention addresses these issues by proposing a dual-motor power coordinated drive adaptive hydraulic tension belt conveyor solution to overcome the shortcomings of existing technologies.

[0005] Table 1 Current limitations of belt conveyors

[0006] Engineering problems Key technological bottlenecks Constraints on system performance Engineering risks and adverse consequences Existing tensioning methods are insufficient for adapting to complex and variable operating conditions. Tensioning methods often rely on preset parameters or passive adjustment, resulting in limited precision and real-time control of tension force. It is difficult to adapt to the operational requirements of frequent start-stop, large fluctuations in material flow, and rapid changes in operating conditions. Significant tension shocks occur during startup and braking, reducing system smoothness and reliability. Insufficient coordinated control capability of multi-drive systems The lack of an effective tension-power coordination mechanism among multiple drive units leads to uneven load distribution. Local drive and transmission components are subjected to unreasonable stress for a long time. Reduced drive efficiency leads to increased fatigue in key components, limiting the overall reliability and safety margin of the machine. High operating energy consumption and lack of intelligent control methods The operation control strategy relies mainly on fixed parameters or empirical values, lacking real-time perception and feedback on material status, load changes, and operating conditions. Unable to dynamically optimize tension and drive parameters based on actual working conditions The overall energy consumption level of the system is too high, making it difficult to realize its operational economy and energy-saving potential. Summary of the Invention

[0007] This invention provides an adaptive hydraulic tensioning belt conveyor with coordinated dual-motor power drive. By installing sensors and receivers at both ends of the conveyor, it collects belt pressure data in real time and dynamically adjusts the power of the two motors according to the distribution of goods, achieving balanced friction. Simultaneously, in conjunction with an adaptive hydraulic tensioning device, it reduces slippage during start-up and shutdown, improves conveying efficiency, reduces energy consumption, and has advantages such as strong structural applicability, energy saving, and environmental protection. The design of this invention is applicable to various conveying scenarios, balancing high efficiency, safety, and energy saving, providing reliable technical support for modern industrial production and logistics transportation. The embodiments of this invention are implemented using the following technical solutions:

[0008] This invention relates to an adaptive hydraulic tensioning belt conveyor with dual-motor coordinated drive, which mainly includes a frame (1), a first motor (2), a first motor gear (3), a first transmission belt (4), a first idler gear (5), a first idler (6), a first pressure sensor (7), a conveyor belt (8), a second pressure sensor (9), a second idler (10), a second idler gear (11), a second transmission belt (12), a second motor gear (13), a second motor (14), an oil inlet (15), an oil outlet (16), a hydraulic connecting rod (17), a hydraulic connecting rod gear (18), a hydraulic connecting rod motor (19), a hydraulic connecting rod motor gear (20), a third transmission belt (21), a data acquisition device (22), and a data receiver (23). For ease of understanding, this invention can be divided into three main functional modules: a drive system, an adaptive hydraulic tensioning device, and a pressure monitoring and data acquisition system.

[0009] The drive system includes a frame (1), a first motor (2), a first motor gear (3), a first transmission belt (4), a first idler gear (5), a first idler (6), a first pressure sensor (7), a second pressure sensor (9), a second idler (10), a second idler gear (11), a second transmission belt (12), a second motor gear (13), and a second motor (14). The first motor (2) and the second motor (14) serve as drive input devices. The first motor gear (3) and the second motor gear (13) drive the first transmission belt (4) and the second transmission belt (12) to rotate, respectively. The first belt (4) and the second transmission belt (12) then drive the first idler gear (5) and the second idler gear (11) to rotate, thereby driving the first idler (6) and the second idler (10) to operate, enabling the conveyor belt (8) to achieve continuous transport. The first pressure sensor (7) and the second pressure sensor (9) collect pressure data on the frame (1) and transmit it to the data receiver (23) for processing.

[0010] The hydraulic linkage system includes a hydraulic linkage (17), a hydraulic linkage gear (18), a hydraulic linkage motor (19), a motor gear (20), a third transmission belt (21), an oil inlet (15), and an oil outlet (16). The crossbeam (1701) of the hydraulic linkage (17) is connected to the hydraulic linkage gear (18). The hydraulic linkage motor (19) drives the gear (18) to rotate through the third transmission belt (15), causing the upper crossbeam (1701) of the linkage to swing. During the swinging process, the hydraulic linkage (17) simultaneously drives the lower hydraulic linkage (1703) through the oil inlet (15) and the oil outlet (16) to complete the telescopic movement in the upper hydraulic linkage (1702). The hydraulic linkage roller (1704) pushes the conveyor belt (8) outward, thereby increasing the friction at both ends of the conveyor, preventing slippage during start-up and shutdown, and addressing the problem of the conveyor belt length increasing due to use.

[0011] The pressure monitoring and data acquisition system includes a first pressure sensor (7) and a second pressure sensor (9) respectively arranged at the left and right ends of the conveyor, for outputting left-end pressure signals and right-end pressure signals. A data acquisition device (22) is used to collect and aggregate the left-end pressure signals and the right-end pressure signals, and a data receiver (23) is communicatively connected to the data acquisition device (22). The data receiver (23) is configured to: (a) calculate the average pressure and pressure difference based on the left-end pressure signal and the right-end pressure signal; (b) when the average pressure is lower than the lower limit of the preset target tension range, control the hydraulic valve group connected to the oil inlet (15) and the oil outlet (16) to extend the hydraulic connecting rod (17) to increase the overall tension; when the average pressure is higher than the upper limit of the target tension range, control the hydraulic valve group to retract the hydraulic connecting rod (17) to reduce the overall tension; (c) when the pressure difference is greater than the preset safety threshold, control the hydraulic connecting rod motor (19) to drive the hydraulic connecting rod (17) to swing to the side with less pressure, and coordinate the extension and retraction of the hydraulic connecting rod (17) to make the pressure difference fall back to within the safety threshold; (d) coordinate and adjust the output power of the first drive unit and the second drive unit according to the left-end pressure signal and the right-end pressure signal to reduce the risk of slippage of the conveyor belt (8) during start-up, shutdown and changes in working conditions.

[0012] During the overall operation, the pendulum-shaped hydraulic linkage (17) is located in the middle of the conveyor frame (1) and forms a centralized control unit with the data receiver. The first pressure sensor (7) and the second pressure sensor (9) located at both ends of the conveyor monitor the stress state of each key part in real time during operation and transmit the collected pressure signals to the data receiver. After analyzing and processing the pressure data, the receiver outputs control commands to drive the hydraulic linkage (17) to perform precise motion adjustment. In the initial state, the hydraulic linkage (17) is basically parallel to the direction of the frame (1). Under the action of the control command, the hydraulic oil flows in a controlled manner through the oil inlet (15) and the oil outlet (16), so that the hydraulic linkage (17) can simultaneously complete the composite motion of circumferential oscillation and axial extension. With the dynamic changes in the material distribution and load position on the conveyor belt (8), the swing angle and elongation of the hydraulic linkage (17) are continuously and adaptively adjusted, thereby precisely balancing the tension and friction at both ends of the conveyor.

[0013] This invention achieves continuous and controllable adjustment of conveyor belt tension throughout the entire process of startup, stable operation, and shutdown by coordinating dual-motor power drive and high-precision hydraulic tension control, combined with a real-time feedback adjustment mechanism for tension status. This technical solution effectively mitigates transient tension fluctuations during startup, shutdown, and sudden changes in operating conditions, suppresses conveyor belt slippage and localized tension concentration, and results in a more balanced tension distribution along the conveyor belt, thereby significantly improving the operational stability and reliability of the conveyor system. Simultaneously, by optimizing the matching relationship between drive power distribution and tension, it reduces ineffective energy consumption and mechanical impact, minimizes wear on the conveyor belt and key components, and helps extend equipment lifespan and improve overall conveying efficiency. It is particularly suitable for belt conveyor systems under variable load conditions.

[0014] The beneficial effects of the embodiments of the present invention are:

[0015] (1) By coordinating the power and torque of the dual motors, the slippage problem caused by uneven load is effectively solved. This invention addresses the technical problem of slippage between the drive drum and the conveyor belt caused by the mismatch of motor output states due to load differences at both ends of a dual-motor driven belt conveyor under conditions of uneven material distribution or changing conveying distance. It proposes an anti-slippage scheme based on the coordinated action of dual-motor power adjustment and hydraulic tensioning. By dynamically adjusting the output power of the dual motors according to the pressure state at both ends of the conveyor, and coordinating with adaptive control of the tension state, the output torque of the dual motors is kept consistent, thereby forming a stable driving and friction state under load changes, effectively reducing the probability of slippage.

[0016] (2) Achieving coordinated matching of dual-motor drive states and improving the problem of inconsistent output torque. Under dual-motor drive conditions, when the load states at both ends of the conveyor are different, even if the rated power of the motors at both ends is the same, the output torque and speed are easily mismatched due to the difference in force. This invention collects force information in real time by placing pressure sensors at both ends of the conveyor, and dynamically adjusts the output power of the motors at both ends based on the pressure feedback. In this adjustment process, the output power of the motors at both ends is allowed to differ, but through the synergistic effect of power adjustment and tension state adjustment, the actual output torque of the motors at both ends is kept basically consistent, thereby achieving coordinated matching of dual-motor drive states and reducing the adverse effects of speed deviation on the operation of the conveyor belt.

[0017] (3) Achieving adaptive and automated adjustment of tension, improving the system's engineering adaptability. This invention achieves continuous and adaptive adjustment of the conveyor belt tension according to load changes through the combined motion of hydraulic linkage and pendulum mechanism, and completes automatic control under the action of the controller. This method avoids component wear caused by excessive tension while ensuring anti-slip performance, and is suitable for conveying conditions with frequent load changes, with good engineering adaptability and application promotion value.

[0018] (4) It has intelligent energy-saving control capabilities to reduce overall operating energy consumption. In view of the problem that existing control systems rely on fixed parameters or empirical values ​​and lack real-time perception of material status and load changes, resulting in the inability to dynamically optimize tension and drive parameters according to working conditions and high system energy consumption, this invention uses pressure feedback and dual-motor power-torque coordinated adjustment, and links hydraulic tension adaptive control to reduce drive output and moderately retract tension when the load decreases or the operation is stable, thereby reducing ineffective friction and energy consumption; and improves matching to ensure stability under load changes or start-stop conditions, thus taking into account both energy saving and reliable operation. Attached Figure Description

[0019] Figure 1 A front view of an adaptive hydraulic tension belt conveyor with dual-motor coordinated drive;

[0020] Figure 2 An oblique view of an adaptive hydraulic tension belt conveyor with dual-motor coordinated drive;

[0021] Figure 3 Left view and planed view of an adaptive hydraulic tension belt conveyor with dual-motor coordinated drive;

[0022] Figure 4 Left view, planed view, and partial view of an adaptive hydraulic tension belt conveyor with dual-motor coordinated drive;

[0023] Figure 5 Right view of a planed view of an adaptive hydraulic tension belt conveyor with dual-motor coordinated drive;

[0024] Figure 6 Right view, planed view, and partial view of an adaptive hydraulic tensioning belt conveyor with dual-motor coordinated drive;

[0025] Figure 7 A front view of a hydraulic linkage device for an adaptive hydraulic tensioning belt conveyor with dual-motor coordinated drive;

[0026] Figure 8 This is a perspective view of a hydraulic linkage device for an adaptive hydraulic tensioning belt conveyor with dual-motor coordinated drive.

[0027] Explanation of the attached figure numbers:

[0028] 1—Rack;

[0029] 2—First motor;

[0030] 3—First motor gear;

[0031] 4—First transmission belt;

[0032] 5—First idler roller gear;

[0033] 6—First idler roller;

[0034] 7—First pressure sensor;

[0035] 8—Conveyor belt;

[0036] 9—Second pressure sensor

[0037] 10—Second idler roller

[0038] 11—Second idler roller gear

[0039] 12—Second transmission belt

[0040] 13—Second motor gear

[0041] 14—Second Motor

[0042] 15—Oil inlet;

[0043] 16—Oil outlet;

[0044] 17—Hydraulic connecting rod; 1701—Hydraulic connecting rod crossbeam; 1702—Upper hydraulic connecting rod; 1703—Lower hydraulic connecting rod; 1704—Hydraulic connecting rod roller

[0045] 18—Hydraulic connecting rod gear;

[0046] 19—Hydraulic connecting rod motor;

[0047] 20—Hydraulic connecting rod motor gear

[0048] 21—Third transmission belt;

[0049] 22—Data acquisition device;

[0050] 23—Data receiver; Detailed Implementation

[0051] The present invention will be further described below with reference to the accompanying drawings. It should be understood that the following embodiments are only for explaining the present invention and are not intended to limit the scope of protection of the present invention.

[0052] 1. Structural installation and electric drive connection

[0053] like Figure 1 As shown, the belt conveyor in this embodiment is installed on the frame (1), and the conveyor belt (8) is wound around the drive end and driven end roller / idler assembly to realize material conveying.

[0054] Regarding the drive system: The first motor (2) is fixed to the frame (1), and the output shaft of the first motor (2) is equipped with the first motor gear (3). The first motor gear (3) is connected to the first transmission belt (4). The first transmission belt (4) is connected to the first idler gear (5), so that the first idler gear (5) drives the first idler (6) to rotate, thereby driving the conveyor belt (8) to run. The second motor (14) is fixed to the frame (1), and the output shaft of the second motor (14) is equipped with the second motor gear (13). The second motor gear (13) is connected to the second transmission belt (12). The second transmission belt (12) is connected to the second idler gear (11), so that the second idler gear (11) drives the second idler (10) to rotate, thereby simultaneously driving the conveyor belt (8) to run.

[0055] Regarding the hydraulic linkage system: a pendulum-shaped hydraulic linkage (17) is located in the middle area of ​​the frame (1). The top crossbeam (1701) of the hydraulic linkage (17) is connected to the hydraulic linkage gear (18). The hydraulic linkage motor (19) is fixed on the frame (1) and drives the third transmission belt (21) through the hydraulic linkage gear (20) to rotate the hydraulic linkage gear (18), causing the upper crossbeam (1201) of the hydraulic linkage (17) to oscillate. At the same time, the hydraulic linkage (17) achieves controlled flow of hydraulic oil through the oil inlet (15) and oil outlet (16), completing the axial extension and retraction movement of the hydraulic linkage (17). Thus, the hydraulic linkage (17) achieves a compound motion of "oscillation + extension" and exerts an outward pushing effect on the conveyor belt (8).

[0056] Regarding the pressure monitoring and data acquisition system: the first pressure sensor (7) and the second pressure sensor (9) are connected to the data acquisition device (22), which transmits the pressure signal to the data receiver (23) to realize the real-time display, recording and storage of pressure. The hydraulic linkage motor (19) is preferably a direct drive motor and is equipped with a high-resolution absolute encoder to form a full closed-loop control of position / speed to ensure the swing angle and motion accuracy of the hydraulic linkage (17).

[0057] 2. Number and arrangement of pressure sensors

[0058] In this embodiment, at least one pressure sensor (7) is provided to collect pressure data at the frame (1) and the first idler roller (6).

[0059] To more accurately reflect the force difference at both ends of the dual motors and achieve precise balance of tension at both ends, it is preferable to use two pressure sensors, namely a first pressure sensor (7) and a second pressure sensor (9), which are respectively arranged at the key force positions at the left and right ends of the conveyor, and output the left end pressure signal P respectively. L With right-end pressure signal P R This allows the data receiver to calculate the pressure difference and perform differential regulation.

[0060] 3. Adaptive Coordination Control Method

[0061] The key to this embodiment is that the data receiver integrates the "dual motor power / load information" and "pressure feedback information" during operation and outputs control commands in real time, so that the hydraulic linkage (17) continuously and adaptively adjusts the swing angle and elongation to balance the tension and friction at both ends of the conveyor. For ease of implementation, the following control process that can be directly implemented in engineering is given.

[0062] 3.1 Data Acquisition and Construction of Operating Conditions

[0063] The data receiver acquires the following data in real time at a preset sampling period (e.g., 10–100 ms, which can be adjusted according to the system response):

[0064] (1) Pressure quantity: Pressure P at the left end L (From the first pressure sensor on the left (7)), pressure P on the right R (From the second pressure sensor on the right (9)); and calculate the average pressure P̄=(P L +P R ) / 2 (characterizing the overall tension level) and pressure difference ΔP=|P L -P R | (Indicates the degree of imbalance of forces at both ends).

[0065] (2) Motor load: Read the power P of the first motor (2) and the second motor (14) from the motor driver or the electronic control system respectively. L P R and rotational speed n L n R If the power cannot be read directly, the current / voltage can be read and converted into power or load characteristics.

[0066] (3) Obtaining material weight / load W: Record the original pressure sensor data before the material enters the conveyor. Record it again immediately after the material enters the conveyor. The difference obtained is the material weight / flow information W.

[0067] 3.2 Generation of Target Tension and Balance Control Variables

[0068] The data receiver generates the target tension level based on "motor load + material weight / equivalent resistance", which reflects its adaptability: when it detects an increase in W, or an increase in motor power / current, or an increase in speed fluctuation, it determines that the required traction capacity of the conveyor belt (8) has increased, and the data receiver increases the target tension level (corresponding to an increase in the target average pressure P). ref Or target tension interval [P̄] min ,P̄ max When a decrease in W (or a decrease in equivalent resistance) or a drop in power is detected while the pressure is stable, the data receiver reduces the target tension level to avoid over-tensioning that could lead to increased energy consumption and component wear.

[0069] Meanwhile, to achieve a balance between the two ends, the data receiver is equipped with a pressure difference safety threshold ΔP. safe (Can be adjusted according to equipment specifications). When ΔP>ΔP safe When the forces at both ends are uneven, differential compensation is required.

[0070] 3.3 Actuator Control: Telescopic movement is used for "tensioning," and oscillation is used for "balance at both ends."

[0071] (1) Hydraulic linkage (17) Telescopic control (overall tension): If P̄ <P̄ min If the target tension increases due to insufficient tension or increased load, control the oil inlet (15) to supply oil and the oil outlet (16) to return oil, so that the hydraulic connecting rod (17) extends and pushes the conveyor belt (8) outward, increasing the tension and friction margin; if P̄>P̄ max If the tension is too high, the hydraulic linkage (17) will retract to reduce the tension and reduce ineffective energy consumption and mechanical impact.

[0072] (2) Hydraulic linkage (17) swing control (differential balance at both ends): If ΔP>ΔP safeThen the control hydraulic linkage motor (19) drives the third belt (21) to drive the hydraulic linkage gear (18) to rotate through the hydraulic linkage motor gear (20), so that the hydraulic linkage (17) swings towards the light load side, and with appropriate extension, the pressure on the light load side rises and the pressure on the heavy load side relatively decreases until ΔP falls back to within the threshold.

[0073] 4. Implementation method for the entire process of startup, stabilization, and shutdown.

[0074] Step 1: Preparations before operation

[0075] Start the data receiver and data acquisition device to enable the first pressure sensor (7) and the second pressure sensor (9) to complete the zero point calibration; connect the oil inlet (15) and the oil outlet (16) of the hydraulic system, and the hydraulic connecting rod (17) is in the initial position (basically parallel to the direction of the frame (1), and the elongation is the preset initial value or zero elongation).

[0076] Step 2: Adaptive Tensioning during the Start-up Phase

[0077] After the first motor (2) and the second motor (14) are started, the data receiver collects P data in real time. L P R and n L n R When feeding begins, causing W to rise or power / current to rise and pressure fluctuations to increase, the data receiver raises the target tension level and controls the hydraulic linkage (17) to extend, so that P̄ enters the target range. If the pressure difference between the two ends exceeds the limit at the same time, the swing control is superimposed to make ΔP return to the safe threshold, thereby reducing the risk of starting slippage.

[0078] Step 3: Continuous Adaptive Compensation during Stable Operation Phase

[0079] When the conveyor belt (8) enters a stable conveying state, the data receiver continuously updates the load and pressure information: if the force at both ends is biased due to changes in material distribution, differential balance is achieved through oscillation; if the overall slack is caused by the long-term use of the conveyor belt (8), the tension level is increased by extension and contraction; if the load decreases, it is appropriately retracted to reduce energy consumption and impact. Through the above process, the system maintains a dynamic match between tension and friction under different working conditions.

[0080] Step 4: Anti-slipping and return to position during shutdown phase

[0081] If a sudden change in pressure difference or a rapid drop in pressure occurs during the shutdown process, leading to an increased risk of slippage, the data receiver will prioritize the implementation of balance control (swing + necessary extension and retraction) to make the pressure at both ends consistent; then, after the conveyor belt (8) stops, the hydraulic linkage (17) will be controlled to return to the initial position and the system will be kept in a safe unloading state.

[0082] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adaptive hydraulic tension belt conveyor with dual-motor power coordinated drive, characterized in that, The system includes components such as a frame (1), a first motor (2), a first motor gear (3), a first transmission belt (4), a first idler gear (5), a first idler (6), a first pressure sensor (7), a conveyor belt (8), a second pressure sensor (9), a second idler (10), a second idler gear (11), a second transmission belt (12), a second motor gear (13), a second motor (14), an oil inlet (15), an oil outlet (16), a hydraulic connecting rod (17), a hydraulic connecting rod gear (18), a hydraulic connecting rod motor (19), a hydraulic connecting rod motor gear (20), a third transmission belt (21), a data acquisition device (22), and a data receiver (23). Specifically, it can be divided into three main functional modules: a drive system, a hydraulic connecting rod device, and a pressure monitoring and data acquisition system. The drive system includes a frame (1), a first motor (2), a first motor gear (3), a first transmission belt (4), a first idler gear (5), a first idler (6), a first pressure sensor (7), a second pressure sensor (9), a second idler (10), a second idler gear (11), a second transmission belt (12), a second motor gear (13), and a second motor (14). The first motor (2) and the second motor (14) serve as drive input devices. The first motor gear (3) and the second motor gear (13) drive the first transmission belt (4) and the second transmission belt (12) to rotate, respectively. The first belt (4) and the second transmission belt (12) then drive the first idler gear (5) and the second idler gear (11) to rotate, thereby driving the first idler (6) and the second idler (10) to operate, so that the conveyor belt (8) can achieve continuous transportation. The first pressure sensor (7) and the second pressure sensor (9) collect pressure data on the frame (1) and transmit it to the data receiver (23) for processing. The hydraulic linkage system includes a hydraulic linkage (17), a hydraulic linkage gear (18), a hydraulic linkage motor (19), a motor gear (20), a third transmission belt (21), an oil inlet (15), and an oil outlet (16). The crossbeam (1701) of the hydraulic linkage (17) is connected to the hydraulic linkage gear (18). The hydraulic linkage motor (19) drives the gear (18) to rotate through the third transmission belt (15), causing the upper crossbeam (1701) of the linkage to swing. During the swinging process, the hydraulic linkage (17) simultaneously drives the lower hydraulic linkage (1703) to complete the telescopic movement in the upper hydraulic linkage (1702) through the oil inlet (15) and the oil outlet (16), and pushes the conveyor belt (8) outward through the hydraulic linkage roller (1704). The pressure monitoring and data acquisition system includes a first pressure sensor (7) and a second pressure sensor (9) respectively arranged at the left and right ends of the conveyor, for outputting left-end pressure signals and right-end pressure signals, a data acquisition device (22) for acquiring and aggregating the left-end pressure signals and right-end pressure signals, and a data receiver (23) communicatively connected to the data acquisition device (22). The data receiver (23) is configured to: (a) calculate the average pressure and pressure difference based on the left-end pressure signals and right-end pressure signals; (b) when the average pressure is lower than the lower limit of the preset target tension range, control the hydraulic valve group connected to the oil inlet (15) and oil outlet (16) to extend the hydraulic connecting rod (17) to increase the overall tension; when the average pressure is higher than the upper limit of the target tension range, control the hydraulic valve group to retract the hydraulic connecting rod (17) to reduce the overall tension; (c) When the pressure difference is greater than the preset safety threshold, the hydraulic linkage motor (19) is controlled to drive the hydraulic linkage (17) to swing to the side with less pressure, and the extension and retraction of the hydraulic linkage (17) is controlled to make the pressure difference fall back to within the safety threshold; (d) The output power of the first drive unit and the second drive unit is coordinated and adjusted according to the left end pressure signal and the right end pressure signal to reduce the risk of slippage of the conveyor belt (8) during start-up, shutdown and changes in working conditions; The pendulum-shaped hydraulic linkage (17) is located in the middle of the conveyor frame (1) and forms a centralized control unit with the data receiver. The first pressure sensor (7) and the second pressure sensor (9) arranged at both ends of the conveyor monitor the stress state of each key part in real time during operation and transmit the collected pressure signals to the data receiver. After analyzing and processing the pressure data, the receiver outputs control commands to drive the hydraulic linkage (17) to perform precise motion adjustment. In the initial state, the hydraulic linkage (17) is basically parallel to the direction of the frame (1). Under the action of the control command, the hydraulic oil flows in a controlled manner through the oil inlet (15) and the oil outlet (16), so that the hydraulic linkage (17) can simultaneously complete the compound motion of circumferential swing and axial extension. With the dynamic changes of material distribution and load position on the conveyor belt (8), the swing angle and elongation of the hydraulic linkage (17) are continuously and adaptively adjusted.

2. The adaptive hydraulic tension belt conveyor with dual-motor power coordinated drive according to claim 1, characterized in that: The first pressure sensor (7) and the second pressure sensor (9) are respectively arranged at the support / bearing parts corresponding to the first idler (6) and the second idler (10).

3. The adaptive hydraulic tension belt conveyor with dual-motor power coordinated drive according to claim 1, characterized in that: The data receiver (23) updates the left-end pressure signal and the right-end pressure signal with a sampling period of 10ms to 100ms and calculates the average pressure and pressure difference.

4. The adaptive hydraulic tension belt conveyor with dual-motor power coordinated drive according to claim 1, characterized in that: The data receiver (23) is further configured to read at least one of the power and speed of the first motor (2) and the second motor (14) from the motor driver or the electronic control system, and to use it together with the average pressure and pressure difference to generate the target tension range and / or power coordination control quantity.

5. The adaptive hydraulic tension belt conveyor with dual-motor power coordinated drive according to claim 1, characterized in that: The data receiver (23) is further configured to acquire material weight / flow information on the conveyor belt (8) and increase the target tension range when the material weight / flow information increases, or decrease the target tension range when the material weight / flow information decreases.

6. The adaptive hydraulic tension belt conveyor with dual-motor power coordinated drive according to claim 1, characterized in that: The hydraulic linkage motor (19) is a direct drive motor, and it works in conjunction with a high-resolution absolute encoder to form a full closed-loop control of position / speed.

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