Automatic door system for approach bridge of discharging platform

Abstract

The utility model discloses a discharging platform approach bridge automatic door system which comprises a controller and a discharging approach bridge and further comprises a height limiting device and a fast door closing device which are sequentially arranged on the discharging approach bridge in the material conveying direction. The two supporting columns vertically extend and are symmetrically arranged on the two sides of the discharging approach bridge in the horizontal direction, the height limiting beam is arranged between the top ends of the two supporting columns in the horizontal direction, the top ends of the supporting columns are further provided with height limiting trigger modules, and the height limiting trigger modules and the height limiting beam are sequentially arranged in the material conveying direction and are in contact fit; the height limiting device further comprises an elastic limiting piece which is in linkage fit with the height limiting beam so as to press the height limiting beam and the height limiting trigger module in the horizontal direction, and the elastic limiting piece can elastically deform and reset in the material conveying direction. According to the automatic door system for the approach bridge of the unloading platform, the height limiting treatment effect of the unloading platform matched with a garbage pool of a garbage incineration power plant on a garbage transport vehicle can be optimized, and related matched facilities and vehicles are prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the technical field of supporting equipment for unloading platforms in factory material storage and transportation systems, and in particular to an automatic gate system for unloading platform approach bridges. Background Technology

[0002] In the material storage and transportation process of some manufacturing enterprises, it is usually necessary to use trucks to transfer materials to material yards and other locations for centralized processing. However, the storage and transportation requirements for waste materials in waste incineration power plants are even higher. Accordingly, the material transfer and processing process for municipal solid waste incineration power generation is generally as follows: garbage truck—garbage unloading platform approach bridge—unloading platform—unloading gate—garbage pool—garbage crane grabbing—garbage hopper—hopper baffle—pushing device—waste incinerator.

[0003] Specifically, after entering a waste-to-energy plant, municipal solid waste is generally stored in a waste pit for a period of time. The purpose of this storage is to allow the waste to undergo aerobic fermentation and leachate drainage, thereby increasing the waste's calorific value. The main factors affecting the effectiveness of aerobic fermentation are temperature, moisture content, organic matter content, and phosphorus and potassium content.

[0004] During storage in landfills, municipal solid waste typically has a moisture content of 45-65% and a pH value of 5.5-7.5. When the ambient temperature at the landfill is around 20°C, mesophilic bacteria within the waste become active, reacting to degrade the waste and release heat. The temperature of the landfill rises continuously with the increase in heat release. When it rises above 45°C, the mesophilic bacteria, which are not suited to these conditions, are inhibited or die, while thermophilic bacteria, which thrive at temperatures between 45-65°C, become active. The activity of thermophilic bacteria then weakens over time, and the temperature of the landfill drops to around 30°C. When the ambient temperature at the landfill falls below 10°C, most microorganisms are inhibited.

[0005] In actual processing, controlling the temperature of the waste pit is a crucial factor in ensuring the calorific value of the waste, especially in winter. Currently, the main methods for controlling the temperature of the waste pit include introducing hot air into the unloading platform and the waste pit itself, as well as sealing the unloading platform. The unloading platform ramp, as the only passage connecting waste transport vehicles to and from the unloading platform, needs to have quick-closing doors installed at its inlet and outlet to prevent cold air from entering, maintain the temperature of the unloading platform, and prevent odor leakage from the waste pit.

[0006] During the daily operation of existing factory areas such as waste incineration power plants, due to factors such as the excessive height of waste transport vehicles or irregular driving operations, it often occurs that the waste transport vehicles collide with and damage the quick closing door, resulting in a poor sealing effect of the corresponding waste storage space, reducing the environmental temperature of the unloading platform and the waste storage pool, further affecting the waste fermentation effect, reducing the calorific value of the waste entering the furnace, ultimately affecting the waste incineration treatment effect and operating efficiency of the waste incineration power plant, and also causing the odor in the waste storage pool to leak out, having an adverse impact on the surrounding environment.

[0007] Correspondingly, in many existing factory areas, height limit poles are arranged at the corresponding positions upstream of the unloading platform in order to restrict vehicles with heights not meeting the quick closing door adaptation requirements from entering through the height limit poles. However, in actual applications, since the existing height limit poles are all arranged in a fixed structure, when a vehicle with excessive height passes through, rigid contact and structural impact between the vehicle top structure and the height limit pole will cause damage to the vehicle and / or the height limit pole. This will not only cause the waste materials carried on the vehicle to be scattered and pollute the ground, but also make it impossible to complete the subsequent height limit treatment due to the damage of the height limit pole, causing inconvenience to the corresponding waste storage and transportation operations.

[0008] In view of this, how to optimize the height limit treatment effect of the waste storage pool supporting unloading platform in a waste incineration power plant to avoid damage to relevant supporting facilities and vehicles is an important technical problem that those skilled in the art need to solve currently. Utility Model Content

[0009] The purpose of the present utility model is to provide an automatic door system for the approach bridge of the unloading platform, which can optimize the height limit treatment effect of the waste storage pool supporting unloading platform in a waste incineration power plant and avoid damage to relevant supporting facilities and vehicles.

[0010] To solve the above technical problems, the present utility model provides an automatic door system for the approach bridge of the unloading platform, including a controller and an approach bridge of the unloading platform arranged upstream along the material conveying direction. It further includes a height limit device and a quick closing door device arranged in sequence along the material conveying direction on the approach bridge. The quick closing door device is arranged opposite to the entrance end of the unloading platform in an openable and closable manner, and the quick closing door device is communicatively connected with the controller;

[0011] The height limiting device includes two vertically extending pillars symmetrically arranged on both sides of the unloading bridge in the horizontal direction, and a height limiting beam arranged horizontally between the tops of the two pillars. The top of each pillar is also provided with a height limiting trigger module that is communicatively connected to the controller. The height limiting trigger module and the height limiting beam are arranged sequentially and in contact with each other in the material conveying direction. The height limiting device also includes an elastic limiting member that works in conjunction with the height limiting beam to press the height limiting beam and the height limiting trigger module together in the horizontal direction. The elastic limiting member can elastically deform and reset in the material conveying direction.

[0012] Preferably, the unloading bridge is equipped with an electric barrier motor that is communicatively connected to the controller, and the electric barrier motor is arranged between the height limiting device and the quick-closing gate device along the material conveying direction.

[0013] Preferably, the unloading bridge is provided with a position sensing component that is communicatively connected to the controller, and the position sensing component is arranged between the height limiting device and the electric barrier machine along the material conveying direction.

[0014] Preferably, the position sensing component includes an infrared beam detector, and the two infrared sensing modules of the infrared beam detector are symmetrically arranged on both sides of the bearing surface of the unloading bridge.

[0015] Preferably, the position sensing component further includes an underground gravity sensing device embedded in the unloading bridge. The underground gravity sensing device is positioned between the two infrared sensing modules of the infrared beam-emitting device, and the top sensing trigger surface of the underground gravity sensing device is not lower than the bearing surface of the unloading bridge.

[0016] Preferably, the position sensing component further includes a radar sensing device arranged on one side of the unloading bridge, and the radar sensing device is located upstream of the infrared beam-emitting device along the material conveying direction.

[0017] Preferably, the support column is provided with a signal indicator light that is communicatively connected to the controller.

[0018] Preferably, the top of the support column is provided with a limiting slot, the end of the height limiting beam is aligned and overlapped in the limiting slot, the height limiting trigger module and the elastic limiting component are also arranged in the limiting slot in a corresponding manner, and the height limiting trigger module, the height limiting beam and the elastic limiting component located in the same limiting slot are arranged in sequence along the material conveying direction and are in contact and adapted.

[0019] Preferably, the elastic limiting member is a compression spring embedded between the inner wall of the limiting slot and the height limiting beam.

[0020] Preferably, the controller is a computer or a PLC controller.

[0021] Compared with the above background art, in the working process of the automatic door system of the approach bridge of the unloading platform provided by the present utility model, in the initial state, the height-limiting beam is reliably fitted at the height-limiting trigger module under the extrusion of the elastic limiting member. When a transport vehicle carrying materials such as garbage passes through the height-limiting device, if the top of the transport vehicle contacts the height-limiting beam, it means that the effective height of the transport vehicle exceeds the opening size matching height of the quick-opening door device. At this time, as the transport vehicle moves, the height-limiting beam is moderately pushed towards the quick-opening door device, and at this time the elastic limiting member is gradually compressed until the height-limiting beam is disengaged from the height-limiting trigger module, so that the height-limiting trigger module is triggered and sends a trigger signal to the controller. After receiving the trigger signal, the controller sends a signal to keep the quick-opening door device closed to prevent the quick-opening door device from opening abnormally. After the ultra-high transport vehicle leaves, the height-limiting beam is no longer squeezed by the ultra-high transport vehicle. At this time, the height-limiting beam can be pushed back to the height-limiting trigger module under the elastic restoring force of the elastic limiting member, so that the height-limiting beam and the height-limiting trigger module are re-pressed and fitted, and the height-limiting device is restored to the initial state. If a transport vehicle carrying materials such as garbage does not contact the height-limiting beam when passing through the height-limiting device, the height-limiting trigger module will not be triggered at this time, so the vehicle can pass smoothly. At this time, the controller can feedback a normal opening signal to the quick-opening door device to open the quick-opening door device, or the staff can manually control the quick-opening door device to open to ensure that the transport vehicle can smoothly enter the corresponding workstations such as the downstream unloading platform and garbage pool through the quick-opening door device to complete the corresponding unloading operation. Through the coordinated cooperation of the height-limiting device and the controller, the automatic door system of the approach bridge of the unloading platform realizes the timely induction and feedback of the ultra-high state of the material transport vehicle, effectively avoids the passing of ultra-high vehicles through the quick-opening door device, and further prevents the damage of the quick-opening door device caused by ultra-high vehicles. It optimizes the height-limiting treatment effect of the material transport vehicle at the material conveying facilities such as the unloading platform supporting the garbage pool of the waste incineration power plant, avoids the damage of the facilities and vehicles caused by the vehicle being ultra-high, and ensures the smooth implementation of the material conveying operation.

[0022] In another preferred embodiment of this utility model, an electric barrier gate, communicatively connected to the controller, is installed on the unloading ramp. The electric barrier gate is positioned between the height restriction device and the quick-closing gate device along the material conveying direction. When the material transport vehicle passes the height restriction device safely without exceeding the height limit, the controller sends an opening signal to sequentially or synchronously open the electric barrier gate and the quick-closing gate device, ensuring that the transport vehicle can pass through them sequentially to enter the unloading area. If the material transport vehicle exceeds the height limit and triggers it, the controller receives a feedback signal from the height restriction trigger module and sends a "keep closed" signal to keep the electric barrier gate and the quick-closing gate device closed. This electric barrier, acting as an upstream switchable interceptor for the quick-opening gate device, prevents transport vehicles from directly impacting the quick-opening gate when it is not in operation, thus providing appropriate pre-protection. Furthermore, during normal operation, the electric barrier and the quick-opening gate device can be opened sequentially, allowing material transport vehicles to stop at the electric barrier at an appropriate position. This provides sufficient opening time for the downstream quick-opening gate device, improving its operational safety and making the overall operation of the unloading platform's automatic gate system more stable and reliable. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 Axonometric view of the layout structure of the automatic gate system for the unloading platform approach bridge provided in a specific embodiment of this utility model;

[0025] Figure 2 for Figure 1 Side view of the structure of the height limiting device.

[0026] in:

[0027] 10-Controller;

[0028] 11-Height limiting device; 111-Support column; 112-Height limiting beam; 113-Height limiting trigger module; 114-Compression spring; 115-Limiting slot;

[0029] 12- Quick-opening door device;

[0030] 13-Electric barrier gate machine;

[0031] 14-Infrared beam detector;

[0032] 15 - Underground gravity induction device;

[0033] 16 - Radar induction device;

[0034] 17 - Signal indicator light;

[0035] 20 - Unloading platform; 201 - Unloading approach bridge; 202 - Vehicle. Detailed implementation manners

[0036] The core of the present utility model is to provide an automatic door system for the approach bridge of the unloading platform, which can optimize the height limit treatment effect of the unloading platform supporting the garbage pool in the waste incineration power plant for garbage transport vehicles, and avoid damage to relevant supporting facilities and vehicles. s

[0037] In order to enable those skilled in the art to better understand the solution of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific implementation manners.

[0038] It should be noted in advance that in the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] In addition, in the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but through other features between them.

[0040] In addition to this, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature. The orientation or positional relationship indicated by the terms "above", "below", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0041] Please refer to the reference. Figure 1 and Figure 2 .

[0042] In a specific embodiment, the automatic gate system for the unloading platform bridge provided by this utility model includes a controller 10 and an unloading bridge 201 arranged upstream of the unloading platform 20 along the material conveying direction. It also includes a height limiting device 11 and a quick-closing device arranged sequentially on the unloading bridge 201 along the material conveying direction. The quick-closing device is arranged in an openable and closable manner at the entrance end of the unloading platform 20, and the quick-closing device is communicatively connected to the controller 10.

[0043] The height limiting device 11 includes two vertically extending pillars 111 symmetrically arranged on both sides of the unloading bridge 201 in the horizontal direction, and a height limiting beam 112 arranged in the horizontal direction between the tops of the two pillars 111. The top of the pillars 111 is also provided with a height limiting trigger module 113 that is communicatively connected to the controller 10. The height limiting trigger module 113 and the height limiting beam 112 are arranged sequentially and in contact with each other in the material conveying direction. The height limiting device 11 also includes an elastic limiting member that works in conjunction with the height limiting beam 112 to press the height limiting beam 112 and the height limiting trigger module 113 together in the horizontal direction. The elastic limiting member can elastically deform and reset in the material conveying direction.

[0044] During the actual operation of the equipment, in the initial state, the height-limiting beam 112 is reliably attached to the height-limiting trigger module 113 under the compression of the elastic limiting member. When a transport vehicle 202 carrying materials such as garbage passes through the height-limiting device 11, if the top of the transport vehicle 202 contacts the height-limiting beam 112, it indicates that the effective height of the transport vehicle 202 exceeds the opening size matching height of the quick-opening door device 12. At this time, as the transport vehicle 202 moves, it pushes the height-limiting beam 112 moderately towards the quick-opening door device 12. At this time, the elastic limiting member is gradually compressed until the height-limiting beam 112 disengages from the height-limiting trigger module 113, thereby triggering the height-limiting trigger module 113. The controller 10 sends a trigger signal to the controller 10. After receiving the trigger signal, the controller 10 sends a signal to the quick-opening door device 12 to keep it closed, so as to prevent the quick-opening door device 12 from opening abnormally. After the oversized transport vehicle 202 leaves, the height limit beam 112 is no longer squeezed by the oversized transport vehicle 202. At this time, the height limit beam 112 can be pushed back to the height limit trigger module 113 under the elastic restoring force of the elastic limit member, so that the height limit beam 112 and the height limit trigger module 113 are pressed and attached again, so that the height limit device 11 returns to its initial state.

[0045] If the transport vehicle 202 carrying materials such as garbage does not come into contact with the height restriction beam 112 when passing the height restriction device 11, the height restriction trigger module 113 will not be triggered, so the vehicle 202 can pass smoothly. At this time, the controller 10 can send a normal opening signal to the quick-opening door device 12 to open the quick-opening door device 12, or the staff can manually control the quick-opening door device 12 to open it, so as to ensure that the transport vehicle 202 can smoothly enter the downstream unloading platform 20 and garbage pool and other corresponding work positions through the quick-opening door device 12 to complete the corresponding unloading operation.

[0046] The automatic gate system of the unloading platform approach bridge, through the coordinated operation of the height limiting device 11 and the controller 10, realizes timely sensing and feedback on the excessive height of the material transport vehicle 202, effectively preventing the excessively tall vehicle 202 from passing through the quick-opening door device 12, thereby eliminating the possibility of damage to the quick-opening door device 12 caused by the excessively tall vehicle 202. It optimizes the height limiting effect of the material conveying facilities such as the unloading platform 20 of the waste incineration power plant on the material transport vehicle 202, avoids damage to the facilities and vehicle 202 caused by the excessive height of the vehicle 202, and ensures the smooth implementation of material conveying operations.

[0047] It should be noted that in specific operational applications, the controller 10 is generally a computer so that operators can monitor and process relevant signal reception and feedback in real time. Alternatively, a PLC (Programmable Logic Controller 10) can be selected as the specific application type of the controller 10 to further reduce the component cost of the unloading platform's automatic gate system and improve its signal processing and coordinated control capabilities.

[0048] It is easy to understand that the height limit trigger module 113 used in this solution is a push-button trigger module. That is, when the height limit trigger module 113 is subjected to horizontal structural pressure from the height limit beam 112, it remains in a state where the height limit sensing is not triggered. When the horizontal structural pressure of the height limit beam 112 on the height limit trigger module 113 is released, the height limit sensing of the height limit trigger module 113 is triggered. The height limit trigger module 113 sends a height limit trigger signal to the controller 10 so that the controller 10 controls the downstream quick-opening door device 12 and other devices to adjust or maintain their working state accordingly in order to cope with the current working conditions of the material transport vehicle 202 being too high.

[0049] Specifically, an electric barrier gate 13, communicatively connected to the controller 10, is installed on the unloading ramp 201. The electric barrier gate 13 is arranged between the height restriction device 11 and the quick-closing door device along the material conveying direction. When the material transport vehicle 202 passes the height restriction device 11 safely without exceeding the height limit, the controller 10 sends an opening signal to cause the electric barrier gate 13 and the quick-closing door device 12 to open sequentially or synchronously, ensuring that the transport vehicle 202 can pass through the electric barrier gate 13 and the quick-closing door device 12 sequentially to enter the unloading operation area. If the material transport vehicle 202 exceeds the height limit and triggers the height restriction device 11, the controller 10 receives a feedback signal from the height restriction trigger module 113 and sends a keep-close signal to keep the electric barrier gate 13 and the quick-closing door device 12 closed.

[0050] The electric barrier gate 13, as an upstream switchable interceptor of the quick-opening gate device 12, can prevent the transport vehicle 202 from directly impacting the quick-opening gate device 12 when it is not open, thus providing appropriate pre-protection for the quick-opening gate device 12. In addition, during normal operation, the material transport vehicle 202 can stop at the electric barrier gate 13 at an appropriate position by opening the electric barrier gate 13 in sequence, so as to leave enough time for the downstream quick-opening gate device 12 to open, improve the operational safety of the quick-opening gate device 12, and make the overall operation of the unloading platform approach bridge automatic door system more stable and reliable.

[0051] More specifically, the unloading ramp 201 is equipped with a position sensing component that is communicatively connected to the controller 10. The position sensing component is arranged between the height limiting device 11 and the electric barrier gate 13 along the material conveying direction. When the material transport vehicle 202 passes the position sensing component, the position sensing component detects the vehicle 202 passing and sends a position sensing signal to the controller 10. The controller 10 then determines the current position of the material transport vehicle 202 based on the position sensing signal and sends an opening or closing command to the downstream electric barrier gate 13 and quick-opening door device 12 accordingly to match subsequent working conditions and improve material conveying efficiency.

[0052] Generally, if the material conveying vehicle 202 does not trigger the sensing signal of the height limit device 11 when it passes by, the material conveying vehicle 202 can continue to travel to the position sensing component. After the position sensing component detects that the vehicle 202 has moved into place, it sends a position sensing signal to the controller 10. The controller 10 sends a corresponding opening signal to the electric barrier gate 13 and the quick-opening door device 12 based on this signal, so as to control the electric barrier gate 13 and the quick-opening door device 12 to open sequentially or synchronously.

[0053] If the material transport vehicle 202 triggers the sensing signal of the height restriction device 11 when it passes by, the controller 10 will send a signal to the electric barrier gate 13 and the quick-opening door device 12 to keep them closed after receiving the sensing signal. Then, regardless of whether the material transport vehicle 202 subsequently triggers the position sensing signal of the position sensing component, the downstream electric barrier gate 13 and the quick-opening door device 12 will not open, so as to prevent the oversized vehicle 202 from causing damage to the quick-opening door device 12 and other main devices and related facilities after it violates the regulations.

[0054] Furthermore, the position sensing component includes an infrared beam detector 14, with two infrared sensing modules symmetrically arranged on both sides of the bearing surface of the unloading bridge 201. The infrared beam detector 14 typically involves the infrared sensing modules on both sides aligning to emit and receive infrared rays, relying on the propagation path of the infrared rays to trigger the detection of the vehicle 202 passing by. Of course, the specific structure and working principle of this infrared beam detector 14 can be understood by referring to existing infrared beam detectors 14. This solution does not involve any radical modification of the infrared beam detector 14; therefore, the specific working method of the infrared beam detector 14 and its communication connection method with the controller 10 and other supporting devices are conventional technologies and will not be elaborated upon here.

[0055] Furthermore, the position sensing component also includes an underground gravity sensor 15 embedded in the unloading bridge 201. The underground gravity sensor 15 is positioned between the two infrared sensing modules of the infrared beam detector 14, and the top sensing trigger surface of the underground gravity sensor 15 is not lower than the bearing surface of the unloading bridge 201. When the vehicle 202 passes the underground gravity sensor 15, its own weight will press down the top sensing trigger surface of the underground gravity sensor 15, thereby triggering the underground gravity sensor 15. The underground gravity sensor 15 then sends a sensing signal to the controller 10 to prove that the vehicle 202 is at the position corresponding to the underground gravity sensor 15.

[0056] Of course, the specific structure and working principle of the buried gravity sensing device 15 can be directly understood by referring to conventional technology, and will not be elaborated further in this article.

[0057] Accordingly, the position sensing assembly also includes a radar sensing device 16 arranged on one side of the unloading bridge 201, and the radar sensing device 16 is located upstream of the infrared beam detector 14 along the material conveying direction. The position sensing of the radar sensing device 16 is more sensitive and accurate, which can further improve the overall sensing accuracy and reliability of the position sensing assembly.

[0058] It should be noted that in practical applications, the infrared beam detector 14, the buried gravity sensor 15, and the radar sensor 16 are mutually compatible. That is, if any one of these devices is triggered due to personnel or small animals passing by, the triggering of the other devices can be used to determine whether the triggered device is a genuine trigger or a false trigger. This allows the controller 10 to verify whether a vehicle 202 has passed by the position sensing component, ensuring the accurate operation and smooth functioning of the relevant facilities and devices in the unloading platform approach bridge automatic door system. Furthermore, the triggering status of each sensor within the position sensing component can be used to verify whether the triggering of the height restriction device 11 is a false trigger, thereby further optimizing the coordination between the various sensors in the unloading platform approach bridge automatic door system and improving the accuracy and reliability of the opening and closing control of the quick-opening door device 12 and related facilities.

[0059] It is easy to understand that in specific operational applications, at least two of the three devices—the infrared beam detector 14, the buried gravity sensor 15, or the radar sensor 16—must be triggered before the controller 10 will determine that the material conveying vehicle 202 is at the position sensing component and send control signals to the relevant downstream devices accordingly, so as to ensure the accuracy of the corresponding device actions and the overall reliability of the equipment operation.

[0060] In addition, a signal indicator light 17, which is communicatively connected to the controller 10, is installed on the support column 111. Generally, this signal indicator light 17 is a traffic light. When the vehicle 202 passes the height restriction device 11 smoothly without exceeding the height limit and reaches the position sensing component, the controller 10 sends a control signal to the signal indicator light 17 based on the sensing signal fed back by the position sensing component. At this time, the signal indicator light 17 displays a red light to warn following vehicles 202 not to enter the height restriction device 11 and its downstream area, so as to avoid collisions or congestion with vehicles 202 currently at the position sensing component. When the vehicle 202 that has not exceeded the height limit has safely left the unloading platform approach bridge area, the controller 10 sends a control signal back to the signal indicator light 17, at which point the signal light turns green to warn following vehicles. Vehicle 202 can continue to the height restriction device 11 to complete the transportation and unloading operations of subsequent vehicles 202. When vehicle 202 exceeds the height limit and triggers the height restriction sensor of the height restriction device 11, the controller 10 sends a control signal to the signal indicator 17 based on the trigger signal fed back by the height restriction device 11. At this time, the signal indicator 17 displays a red light to remind subsequent vehicles 202 not to move forward to avoid collisions or congestion. After the currently over-height vehicle 202 leaves or adjusts its height and passes smoothly, the signal indicator 17 turns green based on the control signal sent by the controller 10 again to restore the normal driving of subsequent vehicles 202 and material transportation.

[0061] Of course, the signal indicator 17 is not limited to the traffic lights mentioned above. Other indicator lights that can display different lighting effects can also be selected. In principle, any indicator light that can clearly distinguish between the two states of prohibition of driving and driving is acceptable, so as to meet the corresponding prompt requirements of subsequent vehicles 202.

[0062] On the other hand, the top of the support column 111 is provided with a limiting slot 115, the end of the height limiting beam 112 is aligned and overlapped in the limiting slot 115, the height limiting trigger module 113 and the elastic limiting component are also arranged in the limiting slot 115 in a corresponding manner, and the height limiting trigger module 113, the height limiting beam 112 and the elastic limiting component located in the same limiting slot 115 are arranged in sequence along the material conveying direction and are in contact and adapted.

[0063] For details, please refer to [link / reference]. Figure 2 As shown, the limiting slot 115 can provide accurate assembly positioning and reliable structural support for the end of the height limiting beam 112, the height limiting trigger module 113 and the elastic limiting component, and provide appropriate structural protection for the above three components to prevent the components of the height limiting device 11 from becoming loose or misaligned due to contact with the vehicle 202 or other situations during the operation of the equipment, thus ensuring the overall stable operation and accurate and sensitive triggering of the height limiting device 11.

[0064] Based on this, the elastic limiting component is a compression spring 114 embedded between the inner wall of the limiting slot 115 and the height limiting beam 112. The compression spring 114 has a simple structure and can provide a stable and reliable elastic force, thereby effectively ensuring the pressing and fitting effect between the height limiting beam 112 and the height limiting trigger module 113. Of course, this elastic limiting component can also be a torsion spring or a torsion bar driven by a torsion spring, etc. In principle, as long as it can meet the component assembly requirements at the height limiting device 11 and ensure the working performance of the height limiting device 11, it is acceptable.

[0065] In addition, the structure and working principle of the quick-opening door device 12 mentioned in this solution can be directly understood by referring to the existing technology. This solution does not make any revolutionary modifications to the quick-opening door device 12. In actual applications, there may be adaptive structural adjustments based on this solution, but these are all things that can be accomplished based on conventional technology in this field, and will not be elaborated on in this article.

[0066] In summary, in the automatic door system of the approach bridge of the unloading platform provided in the present utility model, during its operation, in the initial state, the height-limiting beam is reliably fitted at the height-limiting trigger module under the extrusion of the elastic limiting member. When a transport vehicle carrying materials such as garbage passes through the height-limiting device, if the top of the transport vehicle contacts the height-limiting beam, it indicates that the effective height of the transport vehicle exceeds the opening size matching height of the quick-opening door device. At this time, as the transport vehicle moves, the height-limiting beam is moderately pushed towards the direction of the quick-opening door device, and at this time, the elastic limiting member is gradually compressed until the height-limiting beam disengages from the height-limiting trigger module, thereby triggering the height-limiting trigger module and sending a trigger signal to the controller. After receiving the trigger signal, the controller sends a signal to keep the quick-opening door device closed to prevent the abnormal opening of the quick-opening door device. After the over-height transport vehicle drives away, the height-limiting beam is no longer extruded by the over-height transport vehicle. At this time, the height-limiting beam can be pushed back to the height-limiting trigger module under the elastic restoring force of the elastic limiting member, so that the height-limiting beam and the height-limiting trigger module are pressed and fitted again, and the height-limiting device returns to the initial state. If a transport vehicle carrying materials such as garbage does not contact the height-limiting beam when passing through the height-limiting device, the height-limiting trigger module will not be triggered at this time, so the vehicle can pass smoothly. At this time, the controller can feedback a normal opening signal to the quick-opening door device to open the quick-opening door device, or the staff can manually control the opening of the quick-opening door device to ensure that the transport vehicle can smoothly enter the corresponding workstations such as the downstream unloading platform and garbage pool through the quick-opening door device to complete the corresponding unloading operation. The automatic door system of the approach bridge of the unloading platform realizes the timely induction and feedback of the over-height state of the material transport vehicle through the coordinated cooperation of the height-limiting device and the controller, effectively avoids the over-height vehicle passing through the quick-opening door device, and further prevents the situation of damage to the quick-opening door device caused by the over-height vehicle. It optimizes the height-limiting treatment effect of the material transport vehicle at the material conveying facilities such as the unloading platform supporting the garbage pool in the waste incineration power plant, avoids the damage of the facilities and vehicles caused by the vehicle being over-height, and ensures the smooth implementation of the material conveying operation.

[0067] The above has introduced the automatic door system of the approach bridge of the unloading platform provided by the present utility model in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An automatic door system for a loading dock vestibule, characterized by, The controller and the unloading approach bridge arranged upstream of the unloading platform along the material conveying direction are further provided with a height limiting device and a quick door device arranged in sequence along the material conveying direction, the quick door device is arranged at the entrance of the unloading platform in a position capable of being opened and closed, and the quick door device is in communication connection with the controller; The height limiting device comprises two support columns extending vertically and arranged symmetrically along the horizontal direction on both sides of the unloading approach bridge, and a height limiting beam arranged between the top ends of the two support columns along the horizontal direction, the top end of the support column is further provided with a height limiting trigger module in communication connection with the controller, the height limiting trigger module and the height limiting beam are arranged in sequence along the material conveying direction and are in contact with each other, the height limiting device further comprises an elastic limiting piece in linkage cooperation with the height limiting beam to press the height limiting beam and the height limiting trigger module along the horizontal direction, and the elastic limiting piece can be elastically deformed and reset along the material conveying direction.

2. The automatic door system of claim 1, wherein The unloading approach bridge is provided with an electric barrier machine in communication connection with the controller, and the electric barrier machine is arranged between the height limiting device and the quick door device along the material conveying direction.

3. The automatic door system of claim 2, wherein the door is a sliding door. The unloading approach bridge is provided with a position sensing assembly in communication connection with the controller, and the position sensing assembly is arranged between the height limiting device and the electric barrier machine along the material conveying direction.

4. The automatic door system of claim 3, wherein the door is a sliding door. The position sensing assembly comprises an infrared pair shooting device, and two infrared sensing modules of the infrared pair shooting device are arranged symmetrically on both sides of the load bearing surface of the unloading approach bridge.

5. The automatic door system of claim 4, wherein, The position sensing assembly further comprises a buried gravity sensing device embedded in the unloading approach bridge, the buried gravity sensing device is arranged between the two infrared sensing modules of the infrared pair shooting device in a position, and the top sensing trigger surface of the buried gravity sensing device is not lower than the load bearing surface of the unloading approach bridge.

6. The automatic door system of claim 5, wherein, The position sensing assembly further comprises a radar sensing device arranged on one side of the unloading approach bridge, and the radar sensing device is located upstream of the infrared pair shooting device along the material conveying direction.

7. The automatic door system of claim 3, wherein The support column is provided with a signal indicator lamp in communication connection with the controller.

8. The automatic door system of claim 1, wherein, The top of the support column is provided with a limiting card slot, the end of the height limiting beam is overlapped in a position in the limiting card slot, the height limiting trigger module and the elastic limiting piece are also arranged in the limiting card slot one by one, and the height limiting trigger module, the height limiting beam and the elastic limiting piece in the same limiting card slot are arranged in sequence along the material conveying direction and are in contact with each other.

9. The automatic door system of claim 8, wherein, The elastic limiting piece is a compression spring embedded between the inner wall of the limiting card slot and the height limiting beam.

10. The automatic door system of claim 1, wherein, The controller is a computer or a PLC controller.

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