A conveying belt device with integrated lifting and telescoping functions

Abstract

The application discloses a conveying belt equipment integrating lifting and stretching functions, which comprises a base frame, three-section drawer type linkage belt conveyors arranged on the upper end surface of the base frame, a double-end hydraulic lifting mechanism, a hydraulic support system, a counterweight structure, a hydraulic station and a control system; the three-section drawer type linkage belt conveyors are in drawer type sliding connection and are provided with annular integrated belts; the double-end hydraulic lifting mechanism supports the first section belt conveyor at both ends to realize the adjustment of the elevation angle of 3.5º-26º and multiple loading and unloading height; the hydraulic support system is linked and controlled by the control system according to the extension length of the belt conveyor, and the 75% extension length is the start-stop threshold value; the counterweight structure makes the gravity center of the equipment backward, and the angle digital display sensor and the hydraulic lock are matched to realize the accurate positioning of the elevation angle; the control system supports manual operation and wireless remote control, and is provided with a frequency converter to regulate and control the belt conveying and stretching speed; the problems of single lifting mode, complex support structure, unreasonable gravity center and low angle control precision of the existing stretching conveying belt are solved.

Description

Technical Field

[0001] This invention belongs to the technical field of material conveying equipment, and relates to a conveyor belt device that integrates lifting and telescopic functions, which is particularly suitable for multi-scenario conveying and loading / unloading operations of airport luggage. Background Technology

[0002] Airport baggage handling operations place stringent requirements on the equipment's adaptability to various scenarios, operational flexibility, operational stability, and safety. Existing telescopic conveyor belt equipment has been applied in this field, but it still has many technical shortcomings and cannot meet the operational needs of airports under various working conditions.

[0003] The existing lifting mechanisms of telescopic conveyors are mostly single-end hydraulic adjustment designs, which can only achieve height adjustment in one direction, with a narrow range of elevation angle adjustment and fixed loading and unloading height. They cannot adapt to the diverse height requirements of airport pallet trucks and loading and unloading platforms of different heights. After the telescopic section is extended, the equipment is prone to instability due to being top-heavy. The existing support structure is mostly directly borrowed from the design of swingable hydraulic support legs of cranes, which is complex in structure, has high manufacturing cost, and has not been simplified and optimized for the flat ground of airport aprons, resulting in structural redundancy. At the same time, there is no linkage triggering mechanism between the telescopic mechanism and the support structure, which requires manual judgment of the support timing and manual operation. The operation is cumbersome and prone to safety hazards such as equipment tipping over due to human negligence.

[0004] Furthermore, the power motors of existing three-section telescopic belt conveyors are mostly located on the side or top of the equipment, resulting in a large overall thickness and low space utilization. The elevation angle of the belt conveyor is only roughly controlled by hydraulic pressure, without a precise angle monitoring and positioning structure, resulting in low angle control accuracy and easy problems such as jamming and slippage of goods during transport. The center of gravity design of the equipment is unreasonable. After the telescopic section is fully extended and carries the goods, the risk of forward tilting is high, which further reduces the safety of the equipment. Moreover, some telescopic belt conveyors use a split belt design for the telescopic section, which is prone to belt jamming and accelerated wear during the extension and retraction process, resulting in a short service life of the equipment.

[0005] Therefore, in order to solve the above-mentioned technical problems, the technical solution of this application is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a conveyor belt device that integrates lifting and telescopic functions, solving the technical problems of existing telescopic conveyor belts such as single lifting mode, complex support structure, unreasonable center of gravity design, low angle control accuracy, and no linkage between telescopic and support, so as to realize efficient and safe conveying and unloading of luggage in various working scenarios at airports.

[0007] The technical solution adopted in this invention is as follows:

[0008] A conveyor belt device integrating lifting and telescopic functions includes a base frame, with universal wheels and rolling wheels provided on the lower end face of the base frame, and a braking mechanism and traction structure provided on the base frame. The above structure is consistent with the patent family (application number: 202511730572.X) and is the prior art.

[0009] The upper surface of the base frame is equipped with a three-section drawer-type linked belt conveyor, a double-end hydraulic lifting mechanism, a hydraulic support system, a counterweight structure, a hydraulic station, and a control system. The three-section drawer-type linked belt conveyor includes a first section belt conveyor, a second section belt conveyor, and a third section belt conveyor. The second section belt conveyor is slidably connected to the first section belt conveyor, and the third section belt conveyor is slidably connected to the second section belt conveyor. The three-section drawer-type linked belt conveyor is equipped with an integrated annular belt. When not extended, the belts of the second and third sections belt conveyors rotate inside the equipment. When extended, they participate in the transport of goods. Two 0.75KW drive motors are installed at the lower front end of the first section belt conveyor. One drive motor is connected to the main roller of the three-section drawer-type linked belt conveyor through a sprocket and chain drive, and the other drive motor is connected to the telescopic guide rails of the second and third sections belt conveyors through a sprocket and chain drive. The three-section drawer-type linked belt conveyor is also equipped with a driven roller and a tensioning roller. The tensioning roller is used to adjust the tension of the belt and prevent belt slippage.

[0010] The double-end hydraulic lifting mechanism includes an outlet end elevation angle support mechanism and an inlet end lifting support mechanism. One end of the outlet end elevation angle support mechanism is rotatably connected to the base frame, and the other end is rotatably connected to the outlet end side of the lower end face of the first section of the belt conveyor. One end of the inlet end lifting support mechanism is rotatably connected to the base frame, and the other end is rotatably connected to the inlet end side of the lower end face of the first section of the belt conveyor. The outlet end elevation angle support mechanism includes two sets of HSG-80X45-CA double-acting hydraulic cylinders and a first connecting rod assembly. The fixed end of the HSG-80X45-CA double-acting hydraulic cylinder is rotatably connected to the base frame, and the driving end is rotatably connected to the first connecting rod assembly. The first connecting rod assembly is connected to the first section of the belt conveyor. The lower end face is rotatably connected to the outlet side. The thrust drive of a single HSG-80X45-CA double-acting hydraulic cylinder is 53616N, and the tension drive is 36657N. The inlet end lifting support mechanism includes two sets of HSG-63X35-CA double-acting hydraulic cylinders and a second linkage assembly. The fixed end of the HSG-63X35-CA double-acting hydraulic cylinder is rotatably connected to the base frame, and the driving end is rotatably connected to the second linkage assembly. The second linkage assembly is rotatably connected to the inlet side of the lower end face of the first section of the belt conveyor. The thrust drive of a single HSG-63X35-CA double-acting hydraulic cylinder is 33250N, and the tension drive is 22988N.

[0011] The double-end hydraulic lifting mechanism is equipped with a hydraulic lock, which is hydraulically connected to the hydraulic station. It is used to lock the three-section drawer-type linked belt conveyor at any elevation angle within 3.5º-26º. The angle adjustment speed of the double-end hydraulic lifting mechanism is ≤60º / min. It can drive the three-section drawer-type linked belt conveyor to adjust the loading and unloading height at the outlet end from 1.32m to 6.41m and the loading and unloading height at the inlet end from 1.31m to 1.6m.

[0012] The hydraulic support system includes four sets of hydraulic sliding arms and four sets of hydraulic support legs. The hydraulic sliding arms are fixedly connected to the base frame, and the hydraulic support legs are driven by the hydraulic sliding arms. The hydraulic cylinders of the hydraulic sliding arms are φ45xφ25, with a single thrust of 16964N, a tensile force of 11728N, and a stroke ≤500mm. The hydraulic cylinders of the hydraulic support legs are φ63xφ36, with a single thrust of 33250N, a tensile force of 22393N, and a stroke ≤450mm. The lower end face of the hydraulic support legs is equipped with shock-absorbing and anti-slip rubber pads. The control system can control the start and stop of the hydraulic support system according to the extension length of the three-section drawer-type linked belt conveyor. The start and stop threshold is when the extension length of the three-section drawer-type linked belt conveyor reaches 75% or more of the total extension length. After triggering, the hydraulic sliding arms extend first, driving the hydraulic support legs to the designated position. Then, the hydraulic support legs extend and lift the base frame, separating the casters and rollers from the ground, thus achieving stable support for the equipment.

[0013] The counterweight structure is mounted on the base frame. The center width of the support frame for the three-section drawer-type linked belt conveyor is 925mm. The support frame is used to house the double-end hydraulic lifting mechanism in its retracted state. The total weight of the counterweight structure, the first section of the belt conveyor, and the hydraulic station is 4100kg, the second section of the belt conveyor is 580kg, and the third section of the belt conveyor is 378kg. The total weight of the counterweight structure, the first section of the belt conveyor, and the hydraulic station accounts for more than 81.1% of the total weight of the equipment, while the total weight of the second and third sections of the belt conveyor accounts for less than 18.9% of the total weight of the equipment. This keeps the center of gravity of the equipment close to the inlet end of the base frame, preventing the top-heavy forward tilting problem that occurs when the telescopic section extends and carries goods.

[0014] The hydraulic station is hydraulically connected to the double-end hydraulic lifting mechanism and the hydraulic support system, providing hydraulic power to each hydraulic mechanism. The hydraulic station includes a hydraulic pump, an oil tank, hydraulic pipelines, and hydraulic valve groups. The control system is electrically connected to the three-section drawer-type linked belt conveyor, the double-end hydraulic lifting mechanism, the hydraulic support system, and the hydraulic station. It is equipped with a frequency converter, an angle digital display sensor, and a PLC controller. The angle digital display sensor is located at the linkage assembly of the double-end hydraulic lifting mechanism to accurately monitor the elevation angle of the three-section drawer-type linked belt conveyor, with a monitoring range of 3.5º-26º. The frequency converter is electrically connected to the drive motor to regulate the conveying speed of the three-section drawer-type linked belt conveyor to ≤24m / min and the extension speed of the second and third sections of the belt conveyor to ≤18m / min. The control system supports both manual control and wireless remote control operation modes to adapt to different airport operating scenarios.

[0015] The overall dimensions of this equipment are as follows: in the retracted state, it is 5m long, 2.87m wide, and 1.7m high; in the extended state, it is 10.5m long, 3.84m wide, and 6.41m high. The equipment itself weighs approximately 4500kg (excluding the weight of the hydraulic station and belts), and the maximum load capacity is 400kg. The total length of the three-section drawer-type linked belt conveyor when fully retracted is 4860mm, and the total length when fully extended is ≤11670mm. The extension length of the second section of the belt conveyor relative to the first section is ≤3.41m, the extension length of the third section of the belt conveyor relative to the second section is ≤3.41m, and the width of the three-section drawer-type linked belt conveyor is 1064mm.

[0016] The conveyor belt device of this invention achieves integrated functions of lifting, telescopic, and conveying through the coordinated operation of mechanical transmission, hydraulic drive, and electrical control. The working principles and linkage relationships of each mechanism are as follows:

[0017] Belt conveyor principle: Powered by a 0.75KW drive motor, the motor's rotational power is transmitted to the main drum of the three-section drawer-type linked belt conveyor through multi-stage sprocket and chain transmission. The main drum drives the annular integrated belt to rotate. The driven drum supports and guides the belt, while the tensioning drum adjusts the belt tension to prevent slippage. The frequency converter controls the motor speed, enabling stepless adjustment of the belt conveyor speed within the range of 18-24m / min to meet the needs of different operating efficiencies.

[0018] Telescopic principle: Power is provided by another 0.75KW drive motor, which is connected to the telescopic guide rails of the second and third belt conveyors through sprockets and chains. The rotation of the motor drives the guide rails to slide horizontally, realizing the extension and retraction of the second and third belt conveyors. The frequency converter regulates the motor speed so that the telescopic speed is ≤18m / min. The telescopic stroke of the three belt conveyors is precisely controlled by limit switches to ensure that the extension length of the second section relative to the first section is ≤3.41m and the extension length of the third section relative to the second section is ≤3.41m.

[0019] The lifting angle principle is as follows: Hydraulic power is provided by the hydraulic station. The double-acting hydraulic cylinder of the double-end hydraulic lifting mechanism extends or retracts, pushing the connecting rod assembly to rotate around the hinge point, thereby driving the first section of the belt conveyor to rotate around the base frame, realizing the adjustment of the elevation angle and loading / unloading height of the entire three-section drawer-type linkage belt conveyor. The angle digital display sensor monitors the elevation angle in real time and transmits the angle signal to the control system. When the set angle is reached, the control system controls the hydraulic lock to start, locking the oil pressure of the hydraulic cylinder to achieve precise angle positioning. The hydraulic oil flow rate controller regulates the extension and retraction speed of the hydraulic cylinder, so that the angle adjustment speed is ≤60º / min, ensuring the stability of the belt conveyor angle adjustment.

[0020] Hydraulic support principle: The control system monitors the extension length of the three-section drawer-type linkage belt conveyor in real time through limit switches. When the extension length reaches 75% or more of the total extension length, the control system sends a start command to the hydraulic station. First, it controls the hydraulic cylinder of the hydraulic sliding arm to extend, driving the hydraulic support leg to move to the designated position outside the base frame. Then, it controls the hydraulic cylinder of the hydraulic support leg to extend, raising the base frame and separating the casters and rollers from the ground. The hydraulic support leg provides stable support for the equipment. When the belt conveyor retracts to below the 75% threshold, the control system sends a retraction command to the hydraulic station. First, it controls the hydraulic support leg to retract and reset, then it controls the hydraulic sliding arm to retract, pulling the hydraulic support leg back to the side of the base frame without affecting the movement of the equipment.

[0021] Electrical Control Principle: The control system is the core control unit of the equipment, using a PLC controller as the main control module. It receives signals from the angle digital display sensor, limit switches, and wireless remote control receiver, and outputs control commands to the drive motor, frequency converter, hydraulic pump, and hydraulic valve group according to the preset program to realize the automatic linkage of each mechanism. At the same time, the control system supports manual control mode, and the operator can directly control the action of each mechanism through the operation buttons on the control cabinet to realize emergency operation in case of wireless remote control failure. The hydraulic valve group realizes the reversing and flow control of each hydraulic cylinder to ensure the precise action of the hydraulic mechanism.

[0022] The principle of center of gravity balance: By setting a counterweight structure on the side of the base frame near the inlet end, the total weight of the counterweight structure, the first section of the belt conveyor, and the hydraulic station accounts for more than 81.1% of the total weight of the equipment, while the total weight of the second and third sections of the belt conveyor accounts for less than 18.9%. This ensures that the center of gravity of the equipment is always close to the inlet end of the base frame. Even if the second and third sections of the belt conveyor are fully extended and bear a maximum load of 400kg, the equipment will not have a top-heavy forward tilting problem, thus ensuring the operational stability of the equipment.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] 1. A conveyor belt device integrating lifting and telescopic functions, which adopts a double-end hydraulic lifting mechanism to provide double-end rotation support for the first section of the conveyor belt, breaks through the technical limitations of existing single-end lifting, and realizes multiple elevation angle adjustments of the conveyor belt from 3.5º to 26º, as well as multiple loading and unloading height adjustments from 1.32m to 6.41m at the outlet end and 1.31m to 1.6m at the inlet end. It can accurately adapt to the height differences of airport pallet trucks and loading and unloading platforms of different heights, meet the usage needs of multiple working scenarios in airports, and improve the scenario adaptability by more than 80% compared with existing equipment. At the same time, the double-end rotation support design makes the angle adjustment of the conveyor belt more stable and avoids slippage during cargo transportation.

[0025] 2. In this invention, a hydraulic support system linked with the telescopic mechanism is designed. With 75% of the conveyor belt extension length as the threshold, the support action is automatically triggered by the control system, eliminating the need for manual operation, thus improving ease of operation and avoiding safety hazards caused by human negligence. At the same time, for the flat ground scenario of airports, the existing swing support leg structure of the crane is simplified, and a fixed hydraulic sliding arm + hydraulic support leg design is adopted. While ensuring support stability, the manufacturing cost and structural complexity are reduced. The shock-absorbing and anti-slip rubber pads at the lower end of the support legs further increase the friction with the ground, improving the stability of the equipment by 90%.

[0026] 3. In this invention, through precise counterweight structure design, the total weight of the counterweight structure, the first section of the belt conveyor, and the hydraulic station accounts for more than 81.1%, and the front-to-back weight ratio of the equipment is approximately 4:1. With the center of gravity positioned further back, the problem of the existing equipment being top-heavy and tilting forward after the telescopic section extends is completely solved. Combined with the combination structure of angle digital display sensor and hydraulic lock, the precise monitoring and positioning of the belt conveyor's elevation angle is achieved, with an angle control accuracy of ±0.1º. Compared with the coarse hydraulic control of the existing equipment, the control accuracy is greatly improved, and the safety of the equipment is significantly enhanced.

[0027] 4. In this invention, two drive motors are integrated and arranged at the lower front end of the first section of the belt conveyor, optimizing the overall layout of the equipment, effectively controlling the thickness of the equipment, and improving space utilization. A frequency converter is used to achieve stepless control of the belt conveying speed and the telescopic speed. The belt conveying speed can be adjusted within the range of 18-24 m / min, and the telescopic speed is ≤18 m / min. It can be flexibly adjusted according to the airport operation requirements. Compared with the existing fixed-speed equipment, the operation efficiency is improved by more than 30%. At the same time, the three-section drawer-type linkage belt conveyor adopts a ring integrated belt design. When the telescopic section is not extended, the belt rotates inside, avoiding wear and jamming problems caused by belt exposure and extending the service life of the belt.

[0028] 5. In this invention, the control system supports both manual control and wireless remote control modes, which are suitable for long-distance and multi-directional operations on the airport apron, reducing the labor intensity of operators. In the event of a wireless remote control failure, the system can switch to manual control mode to ensure the normal operation of airport loading and unloading operations and improve the emergency response capability of the equipment. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments, experimental examples, and comparative examples will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort, wherein:

[0030] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall structure of the equipment of the present invention; (the three-section drawer-type linkage belt conveyor is in cross-sectional view).

[0032] Figure 3 This is a front view of the overall structure of the equipment of the present invention; (the three-section drawer-type linkage belt conveyor is in cross-sectional view).

[0033] Figure 4 This is a top view of the overall structure of the device of the present invention;

[0034] Figure 5 This is a bottom view of the overall structure of the device of the present invention;

[0035] Figure 6 This is a left view of the overall structure of the device of the present invention;

[0036] Figure 7 This is a right view of the overall structure of the device of the present invention;

[0037] Figure 8 , Figure 9These are three-dimensional diagrams of the overall structure of the device of this invention. (These demonstrate the authenticity of the device and visually illustrate the three-dimensional structure of the second and third belt conveyors fully extended in the device.)

[0038] Reference numerals: 1-Base frame, 2-Three-section drawer-type linked belt conveyor, 3-Counterweight structure, 4-Hydraulic station, 5-First section belt conveyor, 6-Second section belt conveyor, 7-Third section belt conveyor, 8-Hydraulic sliding arm, 9-Hydraulic support leg, 10-Drive motor, 11-Main drum, 12-Driven drum, 13-Tensioning drum, 14-Double-acting hydraulic cylinder, 15-First link assembly, 16-Second link assembly, 17-Shock-absorbing and anti-slip rubber pad, 18-Support frame. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings, embodiments, experimental examples, and comparative examples. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0041] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0043] I. Implementation Examples

[0044] Example 1

[0045] This invention relates to a conveyor belt device that integrates lifting and telescopic functions, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, it includes a base frame 1, with casters and rollers on the lower end face of the base frame 1, a brake mechanism and a traction structure on the base frame 1, and a three-section drawer-type linkage belt conveyor 2, a double-end hydraulic lifting mechanism, a hydraulic support system, a counterweight structure 3, a hydraulic station 4 and a control system on the upper end face of the base frame 1.

[0046] The three-section drawer-type linkage belt conveyor 2 includes a first section belt conveyor 5, a second section belt conveyor 6 and a third section belt conveyor 7. The second section belt conveyor 6 is slidably connected to the first section belt conveyor 5, and the third section belt conveyor 7 is slidably connected to the second section belt conveyor 6.

[0047] The double-end hydraulic lifting mechanism includes an outlet end elevation angle support mechanism and an inlet end lifting support mechanism. One end of the outlet end elevation angle support mechanism is rotatably connected to the base frame 1, and the other end is rotatably connected to the outlet end side of the lower end face of the first section belt conveyor 5. One end of the inlet end lifting support mechanism is rotatably connected to the base frame 1, and the other end is rotatably connected to the inlet end side of the lower end face of the first section belt conveyor 5.

[0048] The hydraulic support system includes four sets of hydraulic sliding arms 8 and four sets of hydraulic support legs 9. The hydraulic sliding arms 8 are fixedly connected to the base frame 1, and the hydraulic support legs 9 are connected to the hydraulic sliding arms 8 via transmission.

[0049] The counterweight structure 3 is set on the base frame 1. The hydraulic station 4 is hydraulically connected to the double-end hydraulic lifting mechanism and the hydraulic support system. The control system is electrically connected to the three-section drawer-type linkage belt conveyor 2, the double-end hydraulic lifting mechanism, the hydraulic support system, and the hydraulic station 4. The control system can control the start and stop of the hydraulic support system according to the extension length of the three-section drawer-type linkage belt conveyor 2.

[0050] The three-section drawer-type linkage belt conveyor 2 is equipped with an integrated ring belt. The lower front end of the first section belt conveyor 5 is equipped with two 0.75KW drive motors 10. One drive motor 10 is connected to the main roller 11 of the three-section drawer-type linkage belt conveyor 2 through sprocket and chain drive. The other drive motor 10 is connected to the telescopic guide rails of the second section belt conveyor 6 and the third section belt conveyor 7 through sprocket and chain drive. The three-section drawer-type linkage belt conveyor 2 is also equipped with a driven roller 12 and a tensioning roller 13.

[0051] The outlet end elevation support mechanism includes two sets of double-acting hydraulic cylinders 14 and a first connecting rod assembly 15. The fixed end of the double-acting hydraulic cylinder 14 is rotatably connected to the base frame 1, and the driving end is rotatably connected to the first connecting rod assembly 15. The first connecting rod assembly 15 is rotatably connected to the outlet end side of the lower end face of the first section of the belt conveyor 5. The connection between the first connecting rod assembly 15 and the base frame 1 is also rotatably connected, and the connection point of the first connecting rod assembly 15 itself is also rotatably connected. The inlet end lifting support mechanism includes two sets of double-acting hydraulic cylinders 14 and a second connecting rod assembly 16. The fixed end of the double-acting hydraulic cylinder 14 is rotatably connected to the base frame 1, and the driving end is rotatably connected to the second connecting rod assembly 16. The second connecting rod assembly 16 is rotatably connected to the inlet end side of the lower end face of the first section of the belt conveyor 5. The connection between the second connecting rod assembly 16 and the base frame 1 is also rotatably connected, and the connection point of the second connecting rod assembly 16 itself is also rotatably connected.

[0052] The control system is equipped with a frequency converter, an angle digital display sensor, and a hydraulic lock. The angle digital display sensor is located on the double-end hydraulic lifting mechanism and is used to monitor the elevation angle of the three-section drawer-type linkage belt conveyor 2. The frequency converter is electrically connected to the drive motor 10 and is used to regulate the conveying speed and extension speed of the three-section drawer-type linkage belt conveyor 2. The hydraulic lock is hydraulically connected to the double-end hydraulic lifting mechanism and is used to lock the elevation angle of the three-section drawer-type linkage belt conveyor 2.

[0053] The elevation angle range of the three-section drawer-type linkage belt conveyor 2 monitored by the angle digital display sensor is 3.5º-26º. The conveying speed of the three-section drawer-type linkage belt conveyor 2 controlled by the frequency converter is ≤24m / min. The extension and retraction speeds of the second section belt conveyor 6 and the third section belt conveyor 7 are ≤18m / min.

[0054] The start and stop threshold of the hydraulic support system is when the extension length of the three-section drawer-type linkage belt conveyor 2 reaches 75% or more of the total extension length. The lower end surface of the hydraulic support leg 9 is equipped with a shock-absorbing and anti-slip rubber pad 17. After the hydraulic support leg 9 extends, it can lift the base frame 1, so that the casters and rollers are separated from the ground.

[0055] The total weight of the counterweight structure 3, the first belt conveyor 5, and the hydraulic station 4 accounts for more than 81.1% of the total weight of the equipment, while the total weight of the second belt conveyor 6 and the third belt conveyor 7 accounts for less than 18.9% of the total weight of the equipment, so that the center of gravity of the equipment is close to the inlet end of the base frame 1.

[0056] The support frame 18 of the three-section drawer-type linkage belt conveyor 2 has a center width of 925mm. The lower end of the support frame 18 is fixedly connected to the base frame 1, and the upper end of the support frame 18 is used to place the double-end hydraulic lifting mechanism in the retracted state.

[0057] The control system supports both manual control and wireless remote control operation modes. The double-end hydraulic lifting mechanism can drive the three-section drawer-type linkage belt conveyor 2 to adjust the loading and unloading height at the outlet end from 1.32m to 6.41m and at the inlet end from 1.31m to 1.6m. The angle adjustment speed of the double-end hydraulic lifting mechanism is ≤60º / min.

[0058] The total length of the three-section drawer-type linked belt conveyor 2 when fully retracted is 4860mm, and the total length when fully extended is ≤11670mm. The extension length of the second section belt conveyor 6 relative to the first section belt conveyor 5 is ≤3.41m, the extension length of the third section belt conveyor 7 relative to the second section belt conveyor 6 is ≤3.41m, and the width of the three-section drawer-type linked belt conveyor 2 is 1064mm.

[0059] The specific implementation of this embodiment is as follows: it includes a base frame, with two universal wheels and two rolling wheels on the lower end face of the base frame. The base frame is equipped with a braking mechanism and a traction structure. The traction structure is a mop structure with a triangular frame, configured with a circular drag ring and a rectangular drag ring. The braking mechanism is linked to the mop structure through a linkage structure. The above structure is the technology of the same patent family (202511730572.X).

[0060] A counterweight base plate is fixed to the upper end of the base frame, and a cast iron counterweight block is set on the counterweight base plate. The center width of the support frame of the three-section drawer-type linkage belt conveyor is 925mm. The support frame is used to place the double-end hydraulic lifting mechanism in the retracted state. The three-section drawer-type linkage belt conveyor includes a first section belt conveyor, a second section belt conveyor, and a third section belt conveyor. The second section belt conveyor is slidably connected to the first section belt conveyor via guide rails, and the third section belt conveyor is slidably connected to the second section belt conveyor via guide rails. It is equipped with an integrated annular belt and is equipped with a main roller, a driven roller, and a screw-type tensioning roller. The tensioning roller can manually adjust the belt tension. Two 0.75KW reduction motors are fixed at the lower front end of the first section belt conveyor. A sprocket is set at the output end of the motor. One motor is connected to the main roller via a chain drive, and the other motor is connected to the telescopic guide rails of the second and third section belt conveyors via a chain drive.

[0061] Two sets of outlet end elevation support mechanisms are installed between the base frame and the outlet end of the lower end face of the first section of the belt conveyor. Each mechanism includes a first linkage assembly consisting of one HSG-80X45-CA double-acting hydraulic cylinder and two sets of connecting rods. The fixed end of the hydraulic cylinder is rotatably connected to the base frame, and the driving end is rotatably connected to the hinge of the two sets of connecting rods. One set of connecting rods is rotatably connected to the base frame, and the other set of connecting rods is rotatably connected to the outlet end of the lower end face of the first section of the belt conveyor. Two sets of inlet end lifting support mechanisms are installed between the base frame and the inlet end of the lower end face of the first section of the belt conveyor. Each mechanism includes a second linkage assembly consisting of one HSG-63X35-CA double-acting hydraulic cylinder and two sets of connecting rods. The connection method is the same as that of the outlet end elevation support mechanism.

[0062] The base frame is equipped with a set of hydraulic sliding arms and a set of hydraulic support legs at each of its four corners. The hydraulic cylinders of the hydraulic sliding arms are φ45xφ25 with a stroke of 450mm, a single thrust of 16964N and a tensile force of 11728N. The hydraulic cylinders of the hydraulic support legs are φ63xφ36 with a stroke of 400mm, a single thrust of 33250N and a tensile force of 22393N. A 50mm thick shock-absorbing and anti-slip rubber pad is bonded to the lower end of the hydraulic support legs. The hydraulic sliding arms and hydraulic support legs are connected by a pin shaft drive.

[0063] A hydraulic station is fixed on one side of the base frame. The hydraulic station includes a hydraulic pump, an oil tank, hydraulic pipelines, and a hydraulic valve group. The hydraulic pipelines are connected to each hydraulic cylinder and hydraulic lock through quick-connect couplings. A control cabinet (control system) is installed on the base frame. The control cabinet contains a PLC controller and a frequency converter. An angle digital display, operation buttons, and a wireless remote control receiver are installed on the outside of the control cabinet. The angle digital display sensor is a Hall effect angle sensor, located at the hinge of the connecting rod assembly, and electrically connected to the digital display. The frequency converter is electrically connected to two drive motors. The PLC controller is electrically connected to the hydraulic pump, hydraulic valve group, angle sensor, frequency converter, and wireless remote control receiver.

[0064] The total weight of the counterweight, the first belt conveyor, and the hydraulic station is 4100kg. The weight of the second belt conveyor is 580kg, and the weight of the third belt conveyor is 378kg. The weight of the equipment itself is about 4500kg (excluding the hydraulic station and belts). The maximum load capacity is 400kg.

[0065] The basic working mode of this embodiment is that the belt conveyor is in the retracted state, and the total length after full retraction is 4860mm. Since the 75% start-stop threshold has not been reached, the hydraulic support system does not start. Both ends of the hydraulic lifting mechanism are in the retracted state, the belt conveyor elevation angle is 3.5º, the outlet end height is 1.32m, the inlet end height is 1.31m, and the outlet end is 0.01m higher than the inlet end, forming a slight elevation angle, which facilitates the natural transport of goods. At this time, the belt conveyor speed is adjusted to 18m / min through the frequency converter for the loading and unloading of luggage at close range and low height at the airport.

[0066] Example 2

[0067] This invention relates to a conveyor belt device that integrates lifting and telescopic functions, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the specific implementation method of this embodiment is: maximum elevation angle height loading and unloading working mode.

[0068] This embodiment is based on the equipment structure of Embodiment 1 and is a working mode for loading and unloading on an airport high platform. During operation, the operator sends a telescopic command to the control system via a wireless remote control. The control system starts the telescopic drive motor, and the frequency converter adjusts the telescopic speed to 15m / min. The second section of the belt conveyor extends 3.41m relative to the first section of the belt conveyor, and the third section of the belt conveyor extends 3.41m relative to the second section of the belt conveyor. The total extension length of the belt conveyor is 11670mm, reaching 100% of the total extension length. The control system then triggers the hydraulic support system.

[0069] When the hydraulic station is started, the hydraulic cylinder of the hydraulic sliding arm extends, driving the hydraulic support leg to move to the extreme position outside the base frame. Then the hydraulic cylinder of the hydraulic support leg extends, raising the base frame by 50mm, separating the casters and rollers from the ground, and completing the equipment support and fixation.

[0070] The control system keeps the hydraulic cylinder of the inlet lifting support mechanism in a retracted state, while the hydraulic cylinder of the outlet elevation support mechanism slowly extends. The extension speed is controlled by a hydraulic oil flow rate controller, and the angle adjustment speed is 30º / min. The angle digital display sensor monitors the belt conveyor elevation angle in real time. When the elevation angle reaches 26º, the hydraulic lock is activated to lock the oil pressure of the outlet hydraulic cylinder. At this time, the loading and unloading height at the outlet end is 6.41m, and the height at the inlet end is 1.31m, which is suitable for baggage handling operations on airport high platforms. At the same time, the belt conveyor speed is adjusted to 24m / min through a frequency converter to achieve efficient cargo transportation.

[0071] Example 3

[0072] This invention relates to a conveyor belt device that integrates lifting and telescopic functions, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the specific implementation method of this embodiment is: reverse low-height loading and unloading working mode.

[0073] This embodiment is based on the equipment structure of Embodiment 1 and is a reverse loading and unloading working mode for airport pallet trucks. The operator controls the telescopic drive motor through the control system to extend the belt conveyor to a length of 6000mm. If the 75% start-stop threshold is not reached, the hydraulic support system will not start.

[0074] The control system keeps the hydraulic cylinder of the outlet end elevation support mechanism in a retracted state, while the hydraulic cylinder of the inlet end lifting support mechanism extends, adjusting the belt conveyor elevation angle to 5º. The loading and unloading height at the inlet end rises to 1.6m, and the height at the outlet end remains at 1.32m. At the same time, the control system starts the belt drive motor to reverse, and the frequency converter adjusts the belt conveyor speed to 20m / min. Goods are loaded from the inlet end (first section of belt conveyor) and unloaded from the outlet end (third section of belt conveyor), adapting to the reverse loading and unloading needs of airport pallet trucks and solving the technical problem that existing equipment can only load and unload in one direction.

[0075] Example 4

[0076] This invention relates to a conveyor belt device that integrates lifting and telescopic functions, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the specific implementation method of this embodiment is: partial telescopic medium elevation angle working mode.

[0077] This embodiment is based on the equipment structure of Embodiment 1, and is a loading and unloading operation mode at medium distance and medium altitude in airports. The control system controls the belt conveyor to extend to 9000mm, reaching 77% of the total extension length, triggering the hydraulic support system. The hydraulic sliding arm and hydraulic support leg complete the equipment support and fixation according to the steps of Embodiment 2.

[0078] The control system extends the hydraulic cylinders of the inlet lifting support mechanism and the outlet elevation support mechanism by 1 / 2 stroke. The belt conveyor elevation angle is precisely adjusted to 15º, with an outlet height of 3.8m and an inlet height of 1.45m. The frequency converter controls the belt conveyor speed to 22m / min and the telescopic speed to 18m / min. It is suitable for baggage handling operations on medium-sized loading and unloading platforms in airports, achieving efficient conveying at medium heights and distances.

[0079] Example 5

[0080] This invention relates to a conveyor belt device that integrates lifting and telescopic functions, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the specific implementation method of this embodiment is: emergency manual control working mode.

[0081] This embodiment is based on the equipment structure of Embodiment 1 and is an emergency working mode when the equipment's wireless remote control fails. At this time, the operator turns off the automatic linkage function of the control system and switches the control system to manual control mode, and controls the actions of each mechanism individually through the operation buttons on the control cabinet.

[0082] The telescopic drive motor's start / stop and speed are manually controlled to achieve belt conveyor extension and speed adjustment. The extension and retraction of the outlet elevation support mechanism and the inlet lifting support mechanism are individually controlled via the manual directional valve of the hydraulic valve group. The elevation angle is observed via a digital angle display, and the angle is locked manually using a hydraulic lock. When the belt conveyor extends to 75% of its threshold, the hydraulic sliding arm and hydraulic support legs are manually extended to support the equipment. In this mode, all operating parameters are consistent with those in automatic mode, ensuring normal airport loading and unloading operations even in the event of wireless remote control failure, and enhancing the equipment's emergency operation capabilities.

[0083] II. Experimental Examples

[0084] Experiment Example 1 Scene Adaptability Test

[0085] Test method: The experimental group equipment was tested to stably adapt to various airport loading and unloading heights, including flatbed trucks (550mm high), low platforms (1.3m-1.6m), medium platforms (3m-4m), and high platforms (5m-6.4m). The number of effective loading and unloading heights that could be adapted and the number of times that the goods were stably transported without slipping at each height were recorded (each transport consisted of 10 50kg suitcases).

[0086] Table 1 (Test data for Experiment Example 1)

[0087] Loading and unloading height type Valid height quantity (levels) Stable delivery frequency in 8 hours Number of times cargo slipped Flatbed trailer + low platform 3 42 0 Mid-platform 2 38 0 High platform 3 35 0 total 8 115 0

[0088] Experimental conclusion: The equipment of this invention can adapt to 8 different loading and unloading heights at airports through the multi-angle adjustment of the dual-end hydraulic lifting mechanism, covering all scenarios of flatbed trucks, low / medium / high platforms, and there is no slippage of goods at any height. The adaptability of the scenario fully meets the needs of multiple working conditions at airports.

[0089] Experiment Example 2: Equipment Stability Test

[0090] Test method: Extend the belt conveyor of the experimental group equipment to 100% of its total length (11670mm) and bear a maximum load of 400kg (8 50kg suitcases placed at 0.8m intervals). Start the hydraulic support system and test the horizontal tilt offset of the base frame and the friction between the hydraulic support legs and the ground during the operation of the equipment. Record whether the equipment exhibits unstable phenomena such as forward tilting or shaking within 8 hours.

[0091] Table 2 (Test data for Experiment Example 2)

[0092] Horizontal tilt offset of the base frame Static friction between hydraulic support legs and the ground Forward tilt within 8 hours Number of noticeable shaking events within 8 hours 0.5mm 3500N / piece none 0

[0093] Experimental conclusion: The linkage hydraulic support system (shock-absorbing and anti-slip rubber pad) of the equipment of this invention greatly improves the ground friction. Combined with the counterweight design, the center of gravity is shifted to the rear. Even under full extension and full load, the base frame offset is only 0.5mm, with no forward tilting or swaying, and the equipment has excellent stability.

[0094] Experiment Example 3: Precision Test of Elevation Angle Control

[0095] Test method: The elevation angle of the experimental group equipment was set to 3.5º, 15º, and 26º (low / medium / maximum elevation angle) through the control system. The actual elevation angle value was detected by a high-precision angle detector (accuracy ±0.05º), and the angle deviation value was recorded. At the same time, the angle drift after 8 hours of continuous operation after the hydraulic lock was locked was tested.

[0096] Table 3 (Test data for Experiment Example 3)

[0097] Set elevation angle Actual elevation angle Angular deviation value 8-hour angle drift 3.5º 3.55º +0.05º 0.08º 15º 14.98º -0.02º 0.06º 26º 26.03º +0.03º 0.09º

[0098] Experimental conclusion: The combination structure of the angle digital display sensor and hydraulic lock in the device of this invention achieves precise control of the elevation angle, with an angle deviation of ≤ ±0.05º and a drift of ≤0.09º after 8 hours of locking. The angle control accuracy is far higher than that of the existing coarse hydraulic control method, meeting the requirements for precise height loading and unloading.

[0099] Experiment Example 4: Test of Work Efficiency and Ease of Use

[0100] Test method: The test group measured the time taken for the equipment to complete the entire process of "belt conveyor extending to 75% length + support start-up + elevation angle adjusted to target value + cargo transportation", and recorded the total cargo transportation volume within 8 hours. The time taken for manual operation of the support was compared to verify the convenience of the linkage support.

[0101] Table 4 (Test data for Experiment Example 4)

[0102] Total operation time Total cargo transport volume in 8 hours Linkage support for automatic triggering time consumption The manual time required for the same operation (for reference in Comparative Example 2) 90 seconds / time 575 pieces (28,750 kg) 5s 60s / time

[0103] Experimental conclusions: The telescopic and support linkage design, dual control modes, and stepless speed regulation function of the equipment of this invention significantly shorten the operation time and improve the work efficiency. The total conveying capacity in 8 hours meets the loading and unloading needs of the airport during peak hours. The automatic linkage support improves efficiency by 12 times compared with manual operation and significantly improves the ease of operation.

[0104] Experiment Example 5: Belt Wear and Service Life Test

[0105] Test method: The wear of the integrated annular belt in the test group equipment was measured after 8 hours of continuous operation. The depth of the wear marks and the area of ​​delamination on the belt surface were measured and compared with the wear data of the split belt (industry standard value) to estimate the actual service life of the belt.

[0106] Table 5 (Test data for Experiment Example 5)

[0107] Belt wear depth belt delamination area Wear and tear after 8 hours of operation Estimated service life (based on 8 hours of operation per day) 0.02mm 0 0.02mm / 8h ≥2 years

[0108] Experimental conclusion: The ring-shaped integrated belt design of the equipment of this invention allows the belt to rotate internally when the telescopic section is not extended, avoiding exposure wear and jamming. After 8 hours of operation, the wear marks are very shallow and there is no delamination. The estimated service life is ≥2 years, which is much longer than the service life of the industry's split belt (about 6 months), and the equipment maintenance cost is lower.

[0109] Experiment Example 6: Stability Test under Extreme Conditions

[0110] Test conditions: Slightly bumpy airport apron surface (bump amplitude ≤ 5mm), conveyor belt extended to 100% length, maximum load 400kg, continuous operation for 12 hours;

[0111] Test data: The horizontal offset of the base frame was 0.8mm, with no forward tilting or swaying, no goods slipping, no wear on the belts, and no faults in any hydraulic mechanisms or motors;

[0112] Experimental conclusion: The equipment of this invention can still maintain excellent stability and reliability under extreme working conditions with slight turbulence, meeting the usage requirements of complex airport operating environments, and further verifying the adaptability and durability of the equipment.

[0113] III. Comparative Example

[0114] Comparative Example 1: Performance Test of Single-End Hydraulic Lifting Equipment

[0115] Test metrics: Scene adaptability, angle control accuracy, number of times goods slip off the road

[0116] Table 6 (Test data for Comparative Example 1)

[0117] Adaptable to various loading and unloading height settings Angular deviation value Number of times cargo slipped in 8 hours Total transport volume in 8 hours 2 ±1.0º 12 times 320 items

[0118] Comparative conclusions: The single-end hydraulic lifting design can only adapt to two loading and unloading heights, resulting in poor scenario adaptability; the angle control accuracy is low, with a deviation of ±1.0º, making it easy for goods to slip off; and the operating efficiency and safety are far lower than those of this invention. This proves that the double-end hydraulic lifting mechanism is the key technical feature that solves the problems of poor scenario adaptability and low angle accuracy of existing equipment, and has a significant improvement effect.

[0119] Comparative Example 2: Performance Test of Crane-Type Swing Support Leg Equipment

[0120] Test indicators: equipment stability, ease of operation, and support leg failure rate.

[0121] Table 7 (Test data for Comparative Example 2)

[0122] Horizontal offset of the base frame Number of shakes in 8 hours Manual support operation time 8-hour support leg jamming failure rate 5.2mm 8 times 60s / time 3 times

[0123] Comparative conclusion: The crane-type swing support leg has a complex structure, lacks shock absorption and anti-slip design, and has poor equipment stability; manual operation of the support is time-consuming, and the support leg is prone to jamming, resulting in a high failure rate. This proves that the simplified hydraulic sliding arm + hydraulic support leg linkage structure + shock absorption and anti-slip rubber pad of this invention, while ensuring stability, significantly simplifies the structure, reduces the failure rate, and improves the ease of operation. Compared with the existing crane-type support structure, it has unexpected technical effects.

[0124] Comparative Example 3: Performance Testing of Equipment with No Counterweight

[0125] Test indicators: risk of equipment tilting forward, stability under full extension and load, and safety of cargo transportation.

[0126] Table 8 (Test data for Comparative Example 3)

[0127] Full extension and full load forward tilt offset Number of forward tilt warnings in 8 hours Number of times goods fell due to shaking Number of equipment operation interruptions 8.0mm 5 times 8 times 3 times

[0128] Comparative conclusion: When the telescopic section of the equipment without a counterweight design is fully extended and loaded, the center of gravity shifts forward, resulting in a high risk of forward tilting, easy falling of goods, and easy interruption of operation. This proves that the counterweight structure of this invention (front-to-back weight ratio of 4:1) is the key design to solve the problem of the top-heavy and forward tilting risk of existing equipment. It keeps the center of gravity of the equipment always at the rear, so there is no risk of forward tilting even when fully extended and loaded, and the safety is significantly improved. This design works in conjunction with the hydraulic support system to achieve a double guarantee of equipment stability, and is not a simple stacking of technologies.

[0129] IV. Comprehensive Analysis

[0130] The equipment of this invention achieves significant improvements in scene adaptability, equipment stability, angle control accuracy, work efficiency, ease of operation, and equipment lifespan through the coordinated design and linkage of a double-end hydraulic lifting mechanism, a hydraulic support system that links extension and support, a counterweight structure with the center of gravity at the rear, an angle digital display sensor + hydraulic lock, and an integrated ring belt. All performance indicators are superior to typical equipment of the prior art (comparative examples 1-3).

[0131] Existing technological improvements only address single defects (such as improving only the lifting mechanism or only the support structure), without considering the synergistic effect between the various structures. The core innovation of this invention lies in organically combining multiple improved structures to create a synergistic effect among them.

[0132] The dual-end hydraulic lifting mechanism provides a foundation for adaptability to multiple scenarios, while the angle digital display and hydraulic lock provide precise control assurance.

[0133] The hydraulic support system and the telescopic mechanism work together to solve the stability problem after the telescopic section is extended. The counterweight structure further strengthens the balance of the center of gravity. The two work together to achieve the technical effect of "full extension and full load without forward tilting".

[0134] The integrated ring belt is adapted to the telescopic structure, avoiding belt wear during the telescopic process, and working in conjunction with the high-efficiency operation mode to improve the service life and operating efficiency of the equipment.

[0135] The above description is only a preferred embodiment, experimental example, and comparative example of the present invention, and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A conveyor belt device integrating lifting and telescopic functions, comprising a base frame (1), wherein the lower end face of the base frame (1) is provided with casters and rolling wheels, and the base frame (1) is provided with a braking mechanism and a traction structure, characterized in that: The upper surface of the base frame (1) is equipped with a three-section drawer-type linkage belt conveyor (2), a double-end hydraulic lifting mechanism, a hydraulic support system, a counterweight structure (3), a hydraulic station (4), and a control system; The three-section drawer-type linkage belt conveyor (2) includes a first section belt conveyor (5), a second section belt conveyor (6) and a third section belt conveyor (7). The second section belt conveyor (6) is slidably connected to the first section belt conveyor (5), and the third section belt conveyor (7) is slidably connected to the second section belt conveyor (6). The dual-end hydraulic lifting mechanism includes an outlet end elevation angle support mechanism and an inlet end lifting support mechanism. One end of the outlet end elevation angle support mechanism is rotatably connected to the base frame (1), and the other end is rotatably connected to the outlet end side of the lower end face of the first section belt conveyor (5). One end of the inlet end lifting support mechanism is rotatably connected to the base frame (1), and the other end is rotatably connected to the inlet end side of the lower end face of the first section belt conveyor (5). The hydraulic support system includes four sets of hydraulic sliding arms (8) and four sets of hydraulic support legs (9). The hydraulic sliding arms (8) are fixedly connected to the base frame (1), and the hydraulic support legs (9) are connected to the hydraulic sliding arms (8) in a transmission manner. The counterweight structure (3) is set on the base frame (1). The hydraulic station (4) is hydraulically connected to the double-end hydraulic lifting mechanism and the hydraulic support system. The control system is electrically connected to the three-section drawer-type linkage belt conveyor (2), the double-end hydraulic lifting mechanism, the hydraulic support system, and the hydraulic station (4). The control system can control the start and stop of the hydraulic support system according to the extension length of the three-section drawer-type linkage belt conveyor (2).

2. The conveyor belt device integrating lifting and telescopic functions according to claim 1, characterized in that: The three-section drawer-type linkage belt conveyor (2) is equipped with an integrated ring belt. Two 0.75KW drive motors (10) are installed at the lower front end of the first section belt conveyor (5). One of the drive motors (10) is connected to the main roller (11) of the three-section drawer-type linkage belt conveyor (2) through sprocket and chain transmission. The other drive motor (10) is connected to the telescopic guide rails of the second section belt conveyor (6) and the third section belt conveyor (7) through sprocket and chain transmission. The three-section drawer-type linkage belt conveyor (2) is also equipped with a driven roller (12) and a tensioning roller (13).

3. The conveyor belt device integrating lifting and telescopic functions according to claim 1, characterized in that: The outlet end elevation support mechanism includes two sets of double-acting hydraulic cylinders (14) and a first linkage assembly (15). The fixed end of the double-acting hydraulic cylinder (14) is rotatably connected to the base frame (1), and the driving end is rotatably connected to the first linkage assembly (15). The first linkage assembly (15) is rotatably connected to the outlet end side of the lower end face of the first section of the belt conveyor (5). The connection between the first linkage assembly (15) and the base frame (1) is also rotatably connected. The connection of the first linkage assembly (15) itself is also rotatably connected. The inlet end lifting support mechanism includes two sets of double-acting hydraulic cylinders (14) and a second linkage assembly (16). The fixed end of the double-acting hydraulic cylinder (14) is rotatably connected to the base frame (1), and the driving end is rotatably connected to the second linkage assembly (16). The second linkage assembly (16) is rotatably connected to the inlet end side of the lower end face of the first section of the belt conveyor (5). The connection between the second linkage assembly (16) and the base frame (1) is also rotatably connected. The connection of the second linkage assembly (16) itself is also rotatably connected.

4. A conveyor belt device integrating lifting and telescopic functions as described in claim 2, characterized in that: The control system is equipped with a frequency converter, an angle digital display sensor and a hydraulic lock. The angle digital display sensor is located on the double-end hydraulic lifting mechanism and is used to monitor the elevation angle of the three-section drawer-type linkage belt conveyor (2). The frequency converter is electrically connected to the drive motor (10) and is used to regulate the conveying speed and extension speed of the three-section drawer-type linkage belt conveyor (2). The hydraulic lock is hydraulically connected to the double-end hydraulic lifting mechanism and is used to lock the elevation angle of the three-section drawer-type linkage belt conveyor (2).

5. A conveyor belt device integrating lifting and telescopic functions as described in claim 4, characterized in that: The angle range of the three-section drawer-type linkage belt conveyor (2) monitored by the angle digital display sensor is 3.5º-26º. The conveying speed of the three-section drawer-type linkage belt conveyor (2) controlled by the frequency converter is ≤24m / min. The extension speed of the second section belt conveyor (6) and the third section belt conveyor (7) is ≤18m / min.

6. A conveyor belt device integrating lifting and telescopic functions as described in claim 1, characterized in that: The start and stop threshold of the hydraulic support system is that the extension length of the three-section drawer-type linkage belt conveyor (2) reaches 75% or more of the total extension length. The lower end surface of the hydraulic support leg (9) is provided with shock-absorbing and anti-slip rubber pads (17). After the hydraulic support leg (9) extends, it can lift the base frame (1) and separate the casters and rollers from the ground.

7. A conveyor belt device integrating lifting and telescopic functions according to claim 1, characterized in that: The total weight of the counterweight structure (3), the first belt conveyor (5), and the hydraulic station (4) accounts for more than 81.1% of the total weight of the equipment, and the total weight of the second belt conveyor (6) and the third belt conveyor (7) accounts for less than 18.9% of the total weight of the equipment, so that the center of gravity of the equipment is close to the inlet end of the base frame (1).

8. A conveyor belt device integrating lifting and telescopic functions according to claim 1, characterized in that: The support frame (18) of the three-section drawer-type linkage belt conveyor (2) has a center width of 925mm. The lower end of the support frame (18) is fixedly connected to the base frame (1). The upper end of the support frame (18) is used to place the double-end hydraulic lifting mechanism in the retracted state.

9. A conveyor belt device integrating lifting and telescopic functions according to claim 1, characterized in that: The control system supports two operation modes: manual control and wireless remote control. The double-end hydraulic lifting mechanism can drive the three-section drawer-type linkage belt conveyor (2) to adjust the loading and unloading height at the outlet end from 1.32m to 6.41m and the loading and unloading height at the inlet end from 1.31m to 1.6m. The angle adjustment speed of the double-end hydraulic lifting mechanism is ≤60º / min.

10. A conveyor belt device integrating lifting and telescopic functions according to claim 1, characterized in that: The total length of the three-section drawer-type linkage belt conveyor (2) after being fully retracted is 4860mm, and the total length after being fully extended is ≤11670mm. The extension length of the second section belt conveyor (6) relative to the first section belt conveyor (5) is ≤3.41m. The extension length of the third section belt conveyor (7) relative to the second section belt conveyor (6) is ≤3.41m. The width of the three-section drawer-type linkage belt conveyor (2) is 1064mm.

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