Telescopic intelligent safe discharging platform

Abstract

The utility model discloses a telescopic intelligent safe discharging platform which comprises a fixed frame, a movable platform and a master control intelligent device (13). The fixed frame comprises two parallel outer guide rails (2), and the rear sections of the outer guide rails (2) are fixed to the lower floor and form a rectangular frame through four adjustable steel supports (12) to be supported below an upper floor. The front section extends out of the building body; the moving platform comprises a bottom platform plate (10) and inner guide rails (7) arranged on the two sides respectively. The two inner guide rails (7) are respectively arranged in the outer guide rails (2); the driving control device drives the moving platform to move back and forth. A weighing sensor (15) is arranged at the joint of a platform plate (10) of the mobile platform and the inner guide rail (7); the weighing sensor (15) detects weight parameters of goods on the platform plate (10) and uploads the weight parameters to the master control intelligent device (13). The structure is directly attached to a main body structure, the structure is firm, the platform is provided with a weight safety control device, early warning and alarming can be achieved, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building structures, specifically relates to the technical field of building construction structure systems, and in particular relates to a retractable intelligent safety unloading platform. Background Art

[0002] With the development of the construction industry, there are more and more high-rise buildings and super high-rise buildings. In the process of construction, the transfer of materials between layers is generally carried out by vertical transportation tools, and the unloading platform has become an indispensable transport equipment in material transportation. The transportation of blocks, mortar, etc. during construction also needs to be achieved through the unloading platform. The use of the unloading platform significantly speeds up the progress of construction. The unloading platform is a kind of unloading equipment suspended in the air, which usually requires a supporting structure to support it. It is generally used for the turnover of materials on the construction site.

[0003] The existing traditional unloading platforms are diverse in form, but there are still many safety hazards. For example, the prior art has a Chinese patent with publication number CN106382014A, which discloses an assembled retractable early warning unloading platform and its assembly construction method. The platform includes a fixed part, a retractable part, a transmission mechanism and an early warning system; the inner side of the fixed part is anchored on the structural floor, and the outer side is movably connected to the retractable part through a transmission mechanism. The fixed part and the retractable part are two independent entities, adopting a drawer-type design, which can be extended and retracted through rollers and a transmission mechanism. The outer end of the retractable part is connected to the upper structural floor through a pulling device; the tension sensor of the early warning system is on the pulling device, that is, on the wire rope. The tension sensor monitors the tension on the wire rope in real time. When the load exceeds the design limit, an audible and visual alarm is issued to prevent accidents.

[0004] This method of external inclined pulling of wire rope has the following disadvantages:

[0005] 1. The wire rope has an inappropriate knot length or poor flexible knotting. If this happens, it will cause loose connection and force safety problems, and will also cause early warning system failure;

[0006] 2. It is easy to scratch the wire rope when lifting materials; it will also cause loose connection, force safety problems and early warning system failure;

[0007] 3. The external inclined steel wire rope needs to pass through the safety net and the external frame, which is easy to interfere with the external frame; it is also necessary to install inclined wall connecting parts on the wall (or beam), which has a complicated structure. Summary of the invention

[0008] The utility model aims to provide a retractable intelligent safety unloading platform, which is directly attached to the main structure and has a firm structure. The platform is provided with a weight safety control device which can give early warning and alarm, and is safe and reliable.

[0009] The technical solution provided by the utility model is as follows:

[0010] A retractable intelligent safety unloading platform, comprising a fixed frame, an adjustable steel support 12, a mobile platform, a platform guard plate and a master control intelligent device 13; the fixed frame comprises two parallel outer guide rails 2, the rear section of the outer guide rail 2 is placed on the lower floor surface and supported under the upper floor through four adjustable steel supports 12 to form a rectangular frame; the front section of the outer guide rail 2 extends out of the building;

[0011] The mobile platform comprises a bottom platform plate 10 and two inner guide rails 7 respectively arranged on both sides; the two inner guide rails 7 are respectively arranged in the outer guide rails 2; the master control intelligent device 13 drives the mobile platform to move forward and backward along the outer guide rails 2 through the inner guide rails 7 through the driving control device;

[0012] Weighing sensors 15 are provided at multiple connection points between the platform plate 10 and the inner guide rail 7 of the mobile platform; the weighing sensors 15 detect the weight parameters of the goods on the platform plate 10 and upload them to the master control intelligent device 13.

[0013] The rear end of the inner guide rail 7 is provided with a transverse safety latch 16, and latch holes 17 are respectively provided on the outer guide rail 2 corresponding to the safety latch 16 at the front and rear ends of the inner guide rail 7; the safety latch 16 is inserted and pulled to lock the inner guide rail 7 at the front and rear ends or to freely extend and retract.

[0014] The driving control device includes an anti-shock device, which includes a Hall switch 19 and two Hall switch magnetic sheets 20;

[0015] The Hall switch 19 is fixed on the outer rail 2, and the two Hall switch magnetic plates 20 are respectively fixed on the front and rear of the inner rail 7; the overall control processing module of the drive control device controls the slow start and slow stop of the mobile platform through the anti-impact device.

[0016] The drive control device includes a motor drive module, which connects the motor 5 and the driving wheel 21; the motor 5 is installed on the outside of the front end of the outer guide rail 2, and drives the driving wheel 21 on the inner side of the outer guide rail 2 through the motor pin shaft 22, thereby driving the inner guide rail 7 and the mobile platform to telescopically move.

[0017] A guide wheel set 1 6 is provided on the inner side of the front end of the outer guide rail 2 ; a guide wheel set 2 11 is provided on the outer side of the rear end of the inner guide rail 7 .

[0018] The master control intelligent device 13 includes a weighing control module, and the weighing control module is connected to a weighing sensor 15 .

[0019] The driving control device includes a monitoring module, which includes a pair of photoelectric switches 26, which are respectively arranged on the left and right sides of the rear end of the mobile platform to monitor whether there are obstacles in the empty area behind the mobile platform.

[0020] The rear end of the outer guide rail is provided with an installation auxiliary mechanism, and the installation auxiliary mechanism includes a movable walking wheel.

[0021] It can be seen from the technical solution provided by the above-mentioned utility model that the embodiment of the utility model provides a retractable intelligent safe unloading platform, the structure of which is directly attached to the main structure, the structure is firm, and the platform is provided with a weight safety control device, which can provide early warning and alarm, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a retractable intelligent safety unloading platform provided in an embodiment of the utility model;

[0024] Figure 2 A schematic diagram of the structure of the retractable intelligent safety unloading platform provided by the embodiment of the utility model in the main view of the mobile platform in the retracted state;

[0025] Figure 3 A schematic diagram of the structure of the retractable intelligent safety unloading platform provided in an embodiment of the utility model, in which the mobile platform is in an extended state as viewed from the main view;

[0026] Figure 4 A schematic diagram of the upper structure of an adjustable steel support of a retractable intelligent safety unloading platform provided in an embodiment of the utility model;

[0027] Figure 5 A schematic diagram of the lower end structure of the adjustable steel support of the retractable intelligent safety unloading platform provided in the embodiment of the utility model;

[0028] Figure 6 A schematic diagram of the front crossbeam installation structure of a retractable intelligent safety unloading platform provided in an embodiment of the utility model;

[0029] Figure 7 A schematic diagram of the installation structure of a weighing sensor of a retractable intelligent safety unloading platform provided in an embodiment of the utility model;

[0030] Figure 8A schematic diagram of the safety latch installation structure of the retractable intelligent safety unloading platform provided by the embodiment of the utility model;

[0031] Fig. 9 A schematic diagram of the installation structure of the anti-impact device of the retractable intelligent safety unloading platform provided in an embodiment of the utility model;

[0032] Fig.10 A schematic diagram of the electric drive mechanism structure of a retractable intelligent safety unloading platform provided in an embodiment of the utility model;

[0033] Fig.11 A schematic diagram of an installation structure of a guide wheel assembly of a retractable intelligent safety unloading platform provided in an embodiment of the utility model;

[0034] Fig.12 A schematic diagram of the installation structure of the monitoring module of the retractable intelligent safety unloading platform provided in the embodiment of the utility model;

[0035] Fig.13 A schematic diagram of the structure of a drive control device for a retractable intelligent safety unloading platform provided in an embodiment of the utility model;

[0036] Fig.14 Schematic diagram of the mobile walking wheel structure of the retractable intelligent safety unloading platform provided in the embodiment of the utility model Figure 1 ;

[0037] Fig.15 Schematic diagram of the mobile walking wheel structure of the retractable intelligent safety unloading platform provided in the embodiment of the utility model Figure 2 . DETAILED DESCRIPTION

[0038] The following is a clear and complete description of the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0039] First, the terms that may be used in this article are explained as follows:

[0040] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y means both “X” or “Y” and “X and Y”.

[0041] The terms "include", "comprises", "contains", "has" or other descriptions with similar semantics should be interpreted as non-exclusive inclusion. For example, including certain technical feature elements (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or products, etc.) should be interpreted as including not only certain technical feature elements explicitly listed, but also other technical feature elements known in the art that are not explicitly listed.

[0042] The term "consisting of..." means excluding any technical feature elements not explicitly listed. If this term is used in a claim, it will make the claim closed, so that it does not contain technical feature elements other than the technical feature elements explicitly listed, except for the conventional impurities related to them. If this term only appears in a clause of a claim, it only limits the elements explicitly listed in the clause, and the elements recorded in other clauses are not excluded from the overall claim.

[0043] The term "parts by mass" refers to the mass ratio relationship between multiple components. For example, if it is described that component X is x parts by mass and component Y is y parts by mass, then the mass ratio of component X to component Y is x:y. 1 part by mass can represent any mass, for example, 1 part by mass can be represented as 1 kg or 3.1415926 kg. The sum of the parts by mass of all components is not necessarily 100 parts, but can be greater than 100 parts, less than 100 parts or equal to 100 parts. Unless otherwise specified, the parts, proportions and percentages described herein are all measured by mass.

[0044] Unless otherwise specified or limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0045] When concentration, temperature, pressure, size or other parameters are expressed in the form of a numerical range, the numerical range should be understood to specifically disclose all ranges formed by the pairing of any upper limit, lower limit, and preferred value in the numerical range, regardless of whether the range is explicitly stated; for example, if a numerical range of "2 to 8" is stated, the numerical range should be interpreted as including ranges such as "2 to 7", "2 to 6", "5 to 7", "3 to 4 and 6 to 7", "3 to 5 and 7", "2 and 5 to 7", etc. Unless otherwise specified, the numerical ranges stated herein include both their end values ​​and all integers and fractions within the numerical range.

[0046] The orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of this document.

[0047] The embodiments of the utility model will be described in further detail below in conjunction with the accompanying drawings.

[0048] like Figures 1 to 3 As shown, a retractable intelligent safety unloading platform includes a fixed frame, adjustable steel supports 12, a mobile platform, a platform guard plate and a master control intelligent device 13; the fixed frame includes two parallel outer guide rails 2, the rear section of the outer guide rail 2 is placed on the lower floor surface and supported under the upper floor by a rectangular frame formed by four adjustable steel supports 12; the front section of the outer guide rail 2 extends out of the building body, and platform guard plates are arranged around the mobile platform.

[0049] For the convenience of description, this article describes the location reference Figure 2 , the left side of the picture is the “back” side, and the right side of the picture is the “front” side.

[0050] In this example, the rectangular frame is Figure 1 As shown, the rear ends of the two outer guide rails 2 are connected to the rear lever 1; the front lower edge of the two outer guide rails 2 is connected to the front crossbeam 3; four adjustable steel supports 12 are symmetrically fixed to the two outer guide rails 2, and upper crossbeams 23 are respectively connected to the upper parts between the two front and two rear adjustable steel supports 12. Specifically, as Figure 4 As shown, the upper end of the adjustable steel support 12 is directly supported on the upper floor of the main structure, such as Figure 5As shown, the lower end of the adjustable steel support 12 is fixed to the two outer guide rails 2 through the outer flange 24. The height of the adjustable steel support 12 can be adjusted through the adjustment hole on the inner tube of the steel support, and fixed with a pin after adjustment; the upper end of the adjustable steel support 12 is provided with a screw adjustment mechanism for fine-tuning the height; this is a well-known technology and will not be described in detail. Figure 6 As shown, the front cross beam 3 is against the lower building edge of the main structure.

[0051] The adjustable steel support of the rectangular frame is an internal support, without external diagonal rods or braces, no need for tensioning, no embedded parts, simple installation and operation, and construction workers can complete the installation on the floor, which is safe and reliable.

[0052] At the same time, an outer guide rail connecting frame 4 is provided at the front end below the two outer guide rails 2 to strengthen the overall rigidity of the fixed frame.

[0053] In this example, the mobile platform includes a bottom platform plate 10 and an inner guide rail 7 arranged on both sides; the two inner guide rails 7 are respectively arranged in the outer guide rails 2; the driving control device drives the mobile platform to move forward and backward along the outer guide rails 2 through the inner guide rails 7; specifically, side guardrails 8 are arranged on both sides of the bottom platform plate 10, a front guardrail 9 is arranged on the front side, the rear side is opened for loading goods, and the other three sides have guardrails to prevent goods from falling.

[0054] like Figure 7 As shown, weighing sensors 15 are provided at multiple connection points between the platform plate 10 and the inner guide rail 7 of the mobile platform; specifically, ear seats are provided on the inner guide rail 7 and the platform plate 10, respectively, and weighing pin holes 25 are opened on the ear seats; the weighing sensors 15 pass through the weighing pin holes 25 to connect the platform plate 10 and the inner guide rail 7. There are eight connection positions between the platform plate 10 and the two inner guide rails 7, and there are eight corresponding weighing sensors 15. The weighing sensors 15 detect the weight parameters of the goods on the platform plate 10 in real time and upload them to the weighing control module of the master control intelligent device 13. The weighing control module is a part of the drive control device and is provided in the master control intelligent device 13. The weighing sensors 15 are commonly used parts in the weighing field, and technicians can choose them according to their needs.

[0055] In this example, the master control intelligent device 13 is arranged on a mobile platform, and can be arranged in an electrical box, specifically installed on the side guardrail 8 . A weighing control module is arranged inside the master control intelligent device 13 and connected to a weighing sensor 15 .

[0056] like Figure 8 As shown, the rear end of the inner rail 7 is provided with a transverse safety latch 16, and latch holes 17 are respectively provided at the outer rail 2 of the inner rail 7 at the front and rear ends corresponding to the safety latch 16; the distance between the front and rear end latch holes 17 is the travel of the mobile platform forward and backward extension. The safety latch 16 is inserted and removed to lock the inner rail 7 at the front and rear ends or to freely extend and retract. Specifically, as Figure 2 As shown, when the mobile platform is retracted into the building structure, the safety latch 16 is inserted into the latch hole 17, and the mobile platform is locked and can no longer be extended. At this time, the construction workers can safely load and unload materials; Figure 3 As shown, when the mobile platform is fully extended out of the building structure, the safety latch 16 is inserted into the latch hole 17, and the mobile platform is locked and can no longer be extended. At this time, materials can be transported by hoisting equipment such as tower cranes. When the mobile platform is to be extended or retracted, the safety latch 16 needs to be pulled out of the latch hole 17, and the mobile platform can be freely extended or retracted.

[0057] like Fig. 9 As shown, the driving control device includes an anti-impact device, which includes a Hall switch 19 and two magnetic sheets 20 corresponding to the Hall switches; the Hall switch 19 is fixed on the outer guide rail 2, and the two Hall switch magnetic sheets 20 are respectively fixed on the front and rear of the inner guide rail 7; the general control processing module of the driving control device controls the slow start and slow stop of the mobile platform through the anti-impact device, which plays an anti-impact role. Specifically, the two Hall switch magnetic sheets 20 have fixed positions that need to be set according to the stroke to realize the slow start and slow stop functions. Specifically, when the inner mobile platform starts, the initial speed is 25% of the motor speed, then the speed is increased to 50% of the motor speed, and then the speed is increased to 75% of the motor speed, and finally until the motor speed reaches 100%; at 20cm from the end point, the inner guide rail gradually slows down, from 100% of the motor speed to 75%, then from 75% to 50%, then to 25%, and finally to 5%, until the Hall switch magnetic sheet 20 on the inner guide rail 7 triggers the Hall switch 19, the motor is powered off and stopped, and the mobile platform stops running.

[0058] like Fig.10 As shown, the driving control device includes an electric driving mechanism, which includes a motor 5 and a driving wheel 21; the motor 5 is installed on the outside of the front end of the outer guide rail 2, and drives the driving wheel 21 arranged on the inner side of the outer guide rail 2 through the motor pin 22. The specific driving wheel 21 also includes a shaft system structure such as a bearing, which belongs to the known technology and is not repeated here. The driving wheel 21 drives the inner guide rail 7 and the mobile platform to move telescopically. The motor 5 is driven by the motor driving module of the driving control device, and can also be connected to the battery and the wireless remote control switch module; the battery is detachable and replaceable, and charging is more convenient; through the wireless remote control switch module, the remote control can control the start, stop, forward and reverse rotation of the motor (i.e., the extension and retraction of the platform board).

[0059] like Figure 1 As shown, reference Fig.11 The front end inner side of the outer guide rail 2 is provided with a guide wheel set 1 6; the rear end outer side of the inner guide rail 7 is provided with a guide wheel set 2 11. The guide wheel set 1 6 and the guide wheel set 2 11 play a guiding role.

[0060] like Fig.12 As shown, the driving control device includes a monitoring module, and the monitoring module includes a pair of photoelectric switches 26, which are respectively arranged on the left and right sides of the rear end of the mobile platform to monitor whether there are obstacles in the empty area behind the mobile platform. The empty area here refers to the "monitoring area" in the figure. The monitoring module can realize the intelligent monitoring obstacle function: when the mobile platform starts to run, if an obstacle is detected, the mobile platform will not start to run; when the mobile platform is running, if an obstacle is detected, the mobile platform will stop running immediately. Specifically, if there is no obstacle blocking the photoelectric switch 26 in the monitoring area, the photoelectric switch 26 is a normally closed switch, and it is always in a closed state. When an obstacle blocks the photoelectric switch 26, the switch is disconnected; the photoelectric switch 26 is connected to the mobile control electrical box 14, and specifically connected to the master control intelligent device 13 to transmit an alarm, thereby realizing the intelligent monitoring obstacle function.

[0061] like Fig.10 As shown, the mobile control electric box 14 is arranged on the outer guide rail 2 of the fixed frame, and the mobile control electric box 14 is connected to the driving control device and is controlled by it, so as to run with the mobile platform.

[0062] like Fig.13 As shown, the drive control device in this example is the general control processing module, which operates through the control system such as the motor drive module, the monitoring module, the anti-shock device, the weighing control module, etc., and also includes an alarm module and a data transmission module. Wireless transmission and remote monitoring functions can be realized through the alarm module and the data transmission module. Data can be viewed on mobile phones and computers, and early warning alarm information can be sent to relevant responsible persons for timely monitoring and processing. At the same time, the drive control device, that is, the general control processing module, connects the master control intelligent device 13 and the mobile control electric box 14. The master control intelligent device 13 controls the entire platform through the drive control device, including controlling the mobile control electric box 14, the motor drive module, the monitoring module, the anti-shock device, the weighing control module, etc.

[0063] Take the weighing control module as an example. For example, when the load value is ≤1T, it is in normal use and the green indicator light is on; when 1T<load value≤1.5T, overload warning is triggered and the yellow indicator light is on; when the load value is>1.5T, overload alarm is triggered and the red indicator light is on. This product can monitor the load of the platform in real time and store data, and has the functions of wireless transmission and remote monitoring.

[0064] The rear end of the outer guide rail is provided with an auxiliary installation mechanism, such as Fig.14 and 15As shown, the installation auxiliary mechanism includes a movable walking wheel, and the movable walking wheel includes a movable support arm 27, a walking roller 28 and a handle 29. The operating handle 29 can retract or extend the walking roller 28 to play an auxiliary support role. The specific structure and operation method belong to the well-known technology and will not be described in detail.

[0065] In summary, the present invention has the following advantages:

[0066] 1. This product is equipped with adjustable steel support, which is an internal support, does not require external diagonal rods or diagonal braces, has no embedded parts, and is easy to support and install. Construction workers can complete the installation on the floor, which is safe and reliable.

[0067] 2. This product has the function of intelligent obstacle monitoring. When an obstacle that affects passage or poses a safety hazard is detected, the platform board will stop running immediately, making this product smarter and safer.

[0068] 3. The mobile control box equipped with this product provides power to the motor through batteries, and the backup batteries can be replaced at any time; the operation is simple and easy to learn. Its data transmission module realizes wireless transmission and remote monitoring functions, and can send early warning alarm information to relevant responsible persons for timely monitoring and processing; this equipment makes construction more intelligent and safer.

[0069] 4. This product can also achieve intelligent operation through the remote control. It has the function of slow start and slow stop of the platform plate, which makes it more stable and safer to use. When it is retracted into the building structure, it can better cooperate with the tower crane to transport materials, greatly improving work efficiency and safety, and the operation is more stable and reliable.

[0070] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A retractable intelligent safety unloading platform, comprising a fixed frame, an adjustable steel support (12), a mobile platform and a master control intelligent device (13); characterized in that: The fixed frame comprises two outer guide rails (2) arranged in parallel, the rear section of the outer guide rail (2) is placed on the lower floor surface and supported under the upper floor through four adjustable steel supports (12) to form a rectangular frame; the front section of the outer guide rail (2) extends out of the building body; The mobile platform comprises a bottom platform plate (10) and an inner guide rail (7) respectively arranged on both sides; the two inner guide rails (7) are respectively arranged in the outer guide rail (2); the driving control device drives the mobile platform to move forward and backward telescopically along the outer guide rail (2) through the inner guide rail (7); Weighing sensors (15) are provided at multiple connection points between the platform plate (10) and the inner guide rail (7) of the mobile platform; the weighing sensors (15) detect the weight parameters of the goods on the platform plate (10) and upload them to the master control intelligent device (13).

2. The retractable intelligent safety unloading platform according to claim 1 is characterized in that: The rear end of the inner guide rail (7) is provided with a transverse safety latch (16), and latch holes (17) are respectively provided on the outer guide rail (2) corresponding to the safety latch (16) at the front and rear ends of the inner guide rail (7); the safety latch (16) is inserted and removed to lock the inner guide rail (7) at the front and rear ends or to allow it to freely retract.

3. The retractable intelligent safety unloading platform according to claim 1 is characterized in that: The driving control device comprises an anti-impact device, which comprises a Hall switch (19) and two Hall switch magnetic sheets (20); The Hall switch (19) is fixed on the outer guide rail (2), and two Hall switch magnetic sheets (20) are respectively fixed on the front and rear of the inner guide rail (7); the overall control processing module of the drive control device controls the slow start and slow stop of the mobile platform through the anti-impact device.

4. The retractable intelligent safety unloading platform according to claim 1 is characterized in that: The drive control device comprises a motor drive module, which connects the motor (5) and the driving walking wheel (21); the motor (5) is installed on the outside of the front end of the outer guide rail (2), and drives the driving walking wheel (21) arranged on the inner side of the outer guide rail (2) through the motor pin shaft (22), thereby driving the inner guide rail (7) and the mobile platform to move telescopically.

5. The retractable intelligent safety unloading platform according to claim 1 is characterized in that: A guide wheel set 1 (6) is provided on the inner side of the front end of the outer guide rail (2); a guide wheel set 2 (11) is provided on the outer side of the rear end of the inner guide rail (7).

6. The retractable intelligent safety unloading platform according to claim 1 is characterized in that: The driving control device comprises a weighing control module, and the weighing control module is connected to a weighing sensor (15).

7. The retractable intelligent safety unloading platform according to claim 1 is characterized in that: The driving control device comprises a monitoring module, which comprises a pair of photoelectric switches (26) respectively arranged on the left and right sides of the rear end of the mobile platform to monitor whether there are obstacles in the empty area behind the mobile platform.

8. The retractable intelligent safety unloading platform according to claim 1, characterized in that: The rear end of the outer guide rail is provided with an installation auxiliary mechanism, and the installation auxiliary mechanism includes a movable walking wheel.

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