Handheld micro-motion controller for tower crane

Abstract

The utility model discloses a handheld micro controller for a tower crane, which comprises an auxiliary control circuit board fixedly mounted in a controller body, a microprocessor, a positioning component, a hook falling prompt component, a Lora wireless communication module and an RFID (Radio Frequency Identification Device) module are arranged on the surface of the auxiliary control circuit board, and a distance detection component is fixedly mounted on the left side of the controller body. A display assembly is arranged on the surface of the left side of the controller body. According to the handheld micro controller for the tower crane, the tower crane is controlled at a low gear, the use safety is improved, information of a hung object can be read, an information bar code of the hung object is scanned through the RFID module, size information of the hung object is obtained, the voice talkback module is integrated, operation of a user is facilitated, the working efficiency can be improved, the use cost is saved, and the display assembly is installed. Contents such as the operation state of the tower crane, the battery electric quantity, the signal quality and the alarm information can be checked through the display screen, and a user can conveniently know the condition of the tower crane in time and deal with emergencies.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering hoisting machinery control, in particular to a handheld micro-controller for a tower crane. Background Art

[0002] With the continuous improvement of the degree of industrial automation, tower cranes and other lifting equipment are increasingly used in production, construction and other fields. In order to achieve effective control of tower cranes, a remote controller that can quickly and stably communicate wirelessly is needed. Traditional tower crane remote control devices usually consist of a transmitter and a receiver. The transmitter encodes the control electrical signal first, then modulates it, infrared modulation or wireless frequency modulation, amplitude modulation, converts it into a wireless signal and sends it out. The receiver receives the radio waves carrying information, amplifies, decodes, and obtains the original control electrical signal. This electrical signal is then amplified to drive related electrical components to achieve wireless remote control. It also has a positioning function, which can accurately locate the coordinate position of the hoisting, and exchange information with other main control devices of the tower crane control system, so that automatic driving of the tower crane can be realized;

[0003] For example, a switch controller for a tower crane with publication number CN108892044A, the technical problem to be solved by this invention is that when using an operating handle to control a tower crane, the finger moves with a large amplitude, which makes it easy to misoperate the switch controller, posing a potential safety hazard. In order to solve the above technical problems, the present invention provides a switch controller for a tower crane, including a body, a groove is provided in the middle of the top of the body, slide grooves are provided on both sides of the groove, a blocking cover located at the top of the body is slidably connected to the inside of the slide groove, and a through circular hole is provided in the middle of one side of the bottom of the groove. In the present invention, the push rod can be moved left and right by toggling the hollow ball, and the bottom end of the push rod slides into the through hole on the arc plate. The push switch can be controlled by pressing the hollow ball, thereby preventing misoperation of the push switch and improving safety.

[0004] The above-mentioned switch controller for tower crane can control the push switch by pressing the hollow ball to prevent accidental touch, thereby improving the safety of the device. However, most traditional tower crane remote controls use radio control to control the operation of the tower crane, which transmits signals by sending radio waves or infrared rays to control the operation of the tower crane. They can often only achieve simple control functions, and the communication effect is unstable, which cannot meet the needs of modern industrial production. Utility Model Content

[0005] The utility model aims to provide a handheld micro-controller for a tower crane to solve the problem that the above-mentioned background technology can only realize simple control functions, the communication effect is unstable, and the needs of modern industrial production cannot be met.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a handheld micro-controller for a tower crane, comprising an auxiliary control circuit board fixedly installed inside a controller body, and a microprocessor, a positioning component, a hook drop prompt component, a Lora wireless communication module, and an RFID module are arranged on the surface of the auxiliary control circuit board, a distance detection component is fixedly installed on the left side of the controller body, a display component is arranged on the left side surface of the controller body, a power supply component is arranged on the right side surface of the controller body, and an operating component is fixedly installed on the upper surface of the middle end of the controller body;

[0007] A protective cover is nested and installed on the outer side of the controller body, and a protective buffer mechanism is arranged on the inner side of the protective cover, and the protective buffer mechanism protects the controller body through the protective cover;

[0008] A tightening belt is fixedly installed at the bottom of the controller body, and a clamping and fixing mechanism is arranged at the upper left end of the tightening belt. The clamping and fixing mechanism limits the user's hand-holding position through the tightening belt to prevent the controller body from falling.

[0009] Furthermore, the microprocessor is the processing core of the controller body, and exchanges data with each component through the auxiliary control circuit board to generate control instructions and control the operation of the tower crane. The positioning component includes a positioning module and a 4G transmission module, which are fixed to the auxiliary control circuit board and connected to the microprocessor serial port to provide the microprocessor with the positioning data of the handheld micro-controller body. The 4G transmission module is installed on the auxiliary control circuit board and connected to the microprocessor serial port to receive the query data of the positioning base station and send it to the microprocessor. The distance detection component includes a laser radar and a reel. The laser radar is installed at the bottom of the handheld micro-controller body to detect the distance between the handheld micro-controller body and the ground; the reel is installed on the tower crane hook to connect the hook and the controller body to adjust the position of the controller body.

[0010] Furthermore, the hook drop prompt component includes a signal light and a sound module, which are installed in the controller body and exchange data with the microprocessor through the auxiliary control circuit board. When the prompt condition is met, the microprocessor controls the signal light to flash and controls the sound module to emit a warning audio. The display component includes a display screen and a display screen driver, which are installed on the shell of the controller body. The display screen is connected to the display screen driver, and the display screen driver is connected to the corresponding interface of the auxiliary control circuit board. It receives the display content sent by the microprocessor and displays it on the display screen. The display content includes operating status, fault information, battery power, signal quality and other contents. The power supply component includes a power supply device and a power supply processing module, which are installed on the shell of the controller body. The power supply device is connected to the power supply processing module, and the power supply is processed by the power supply processing module to supply power to the controller body.

[0011] Furthermore, the operating components include buttons for rising, falling, turning left, turning right, moving forward, moving backward, manual application, jog application, calling, one-key hook lifting, confirming, canceling, powering on and off, and emergency stop. The operating components are installed on the controller body shell, and send signals to the microprocessor input terminal through the buttons in the auxiliary control circuit board to generate control instructions. The Lora wireless communication module is fixed on the auxiliary control circuit board, connected to the microprocessor serial port, sends status information to the microprocessor, and receives the control signal sent by the microprocessor at the same time, and transmits the control signal to the tower crane main controller. The RFID module is installed on the handheld micro-controller body, and cooperates with the operating buttons to scan the hoisting object barcode and obtain the hoisting object information. A voice intercom module is installed in the controller body, which is used in conjunction with the operating buttons to send and receive audio from other controller bodies.

[0012] Furthermore, the protective buffer mechanism is provided with a pressure plate, and the outer side of the pressure plate is fixedly installed on the inner side of the protective cover, an elastic airbag is fixedly installed on the outer side of the controller body, an air duct is fixedly installed on the inner side of the elastic airbag, and a buffer airbag is fixedly installed on the inner side of the air duct.

[0013] Furthermore, the elastic airbag and the buffer airbag are both in the shape of long strips, and the elastic airbag forms a communication structure with the buffer airbag through the air guide tube, and the positions of the buffer airbag and the protective cover correspond.

[0014] Furthermore, the locking and fixing mechanism is provided with a fixing plate, and the lower right end of the fixing plate is fixedly installed on the left end of the tightening belt, and a fixing slot is opened on the left side of the upper end of the fixing plate, a dial plate is installed through the bottom of the controller body, and a card block is fixedly installed on the right end of the dial plate, and a return spring is fixedly installed on the left side of the card block, and the left side of the return spring is fixedly installed on the controller body, and the return spring is nested on the right side surface of the dial plate.

[0015] Furthermore, the shapes of the card block and the card slot are both inclined, and the card block forms an elastic structure with the controller body through a return spring, and the card block forms a clamping structure with the fixing plate through the card slot.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. It has a power-on self-test function, which performs power-on self-test on the microprocessor, positioning component, distance detection component, hook drop prompt component, display component, power supply component, operation component, Lora wireless communication module, RFID module, voice intercom module, etc., to ensure the working reliability of the handheld micro controller. It has the function of automatically sending positioning information in real time. The differential data is obtained through the 4G transmission module. The microprocessor analyzes the positioning data and calculates the position information of the loading and unloading points in real time. The information is automatically sent to the tower crane main controller using the Lora wireless communication module. It has a human-computer interactive control function, and the microprocessor sends the tower crane automatic or manual operation control command to the tower crane main controller to control the tower crane operation;

[0018] Furthermore, it has a jog control function, which sends control instructions to the tower crane main controller through a handheld micro-controller to achieve precise control of the hook up and down, front and back, left and right. It has a hook drop prompt function, which prompts the position of the handheld remote control when the hook drops through a sound module and a signal light, making it convenient for tower crane operators to use the handheld remote control. It supports battery replacement, and the battery replacement is convenient. The handheld remote control can be used continuously for hoisting operations, which improves work efficiency. It uses buttons instead of handles, which is more convenient for operators to operate.

[0019] Furthermore, the low-gear control tower crane improves the safety of use, can read the information of the hoisted object, scan the information barcode of the hoisted object through the RFID module, and obtain the size information of the hoisted object. The integrated voice intercom module can replace the original intercom, which is convenient for users to operate, can improve work efficiency, and save use costs. The display component can be installed to view the tower crane's operating status, battery power, signal quality, and alarm information through the display screen, which is convenient for users to understand the tower crane status in time and deal with emergencies;

[0020] 2. Through the setting of the elastic airbag and the buffer airbag, when the controller body falls to the ground, the elastic airbag is squeezed by the impact force, and the elastic airbag transmits the internal gas to the buffer airbag. The buffer airbag supports the protective cover and protects the controller body, preventing the controller body from being easily damaged, making the device more durable;

[0021] Furthermore, a restraining strap that is put on the hand is provided at the bottom of the controller body. The restraining strap can be quickly fixed through the installation and disassembly mechanism on the left side of the restraining strap, so that the user can fix it on the hand when using the device, avoiding the problem of the user not holding the device firmly and dropping it, making the device more stable when held by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the top cross-sectional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the front cross-sectional structure of the cushioning airbag of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the utility model when viewed from above;

[0027] Figure 6 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0028] Figure 7 This is a schematic diagram of the microprocessor control flow structure of the utility model;

[0029] Figure 8 This is a schematic diagram of the circuit structure of the power supply component, RFID module and positioning component of the utility model;

[0030] Fig. 9 This is a schematic diagram of the circuit structure of the voice intercom module, Lora wireless communication module and hook drop prompt component of the utility model;

[0031] Fig.10 This is a schematic diagram of the circuit structure of the display component and the operating component of the utility model.

[0032] In the figure: 1. Controller body; 2. Auxiliary control circuit board; 3. Microprocessor; 4. Positioning component; 5. Distance detection component; 6. Hook drop prompt component; 7. Display component; 8. Power supply component; 9. Operation component; 10. Lora wireless communication module; 11. RFID module; 12. Voice intercom module; 13. Protective cover; 14. Pressure plate; 15. Elastic airbag; 16. Air guide tube; 17. Buffer airbag; 18. Retraction belt; 19. Fixing plate; 20. Card slot; 21. Dial plate; 22. Card block; 23. Reset spring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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 in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7-10The technical solution shown, in order to solve the problem that the communication effect is unstable and cannot meet the needs of modern industrial production, discloses a communication control mechanism, which can perform control more stably: an auxiliary control circuit board 2 is fixedly installed inside the controller body 1, and a microprocessor 3, a positioning component 4, a hook drop prompt component 6, a Lora wireless communication module 10, and an RFID module 11 are arranged on the surface of the auxiliary control circuit board 2. A distance detection component 5 is fixedly installed on the left side of the controller body 1, a display component 7 is arranged on the left surface of the controller body 1, a power supply component 8 is arranged on the right surface of the controller body 1, and an operation component 9 is fixedly installed on the middle upper surface of the controller body 1. The microprocessor 3 is the processing core of the controller body 1, and it interacts with each component through the auxiliary control circuit board 2 to generate control instructions and control the operation of the tower crane. The positioning component 4 includes a positioning module and a 4G transmission module, which are fixed to the auxiliary control circuit board 2, and are serially connected to the microprocessor 3 to provide the microprocessor 3 with the positioning data of the handheld micro controller body 1;The 4G transmission module is installed on the auxiliary control circuit board 2, connected to the serial port of the microprocessor 3, receives the query data of the positioning base station, and sends it to the microprocessor 3. The distance detection component 5 includes a laser radar and a reel. The laser radar is installed at the bottom of the handheld micro-controller body 1 to detect the distance between the handheld micro-controller body 1 and the ground. The reel is installed on the tower crane hook, connecting the hook with the controller body 1, and can adjust the position of the controller body 1. The hook drop prompt component 6 includes a signal light and a sound module, which is installed in the controller body 1. Data is exchanged with the microprocessor 3 through the auxiliary control circuit board 2. When the prompt condition is met, the microprocessor 3 controls the signal light to flash and controls the sound module to emit a warning audio. The display component 7 includes a display screen and a display screen driver, which is installed on the shell of the controller body 1. The display screen is connected to the display screen driver, and the display screen driver is connected to the corresponding interface of the auxiliary control circuit board 2. It receives the display content sent by the microprocessor 3 and displays it on the display screen. The display content includes operating status, fault information, battery power, signal quality, etc. The power supply Component 8 includes a power supply device and a power supply processing module, which are installed on the housing of the controller body 1. The power supply device is connected to the power supply processing module, and the power supply is processed by the power supply processing module to supply power to the controller body 1. The operation component 9 includes buttons such as rise, fall, turn left, turn right, forward, backward, manual application, inching application, call, one-key hook, confirm, cancel, power on and off, and emergency stop. The operation component 9 is installed on the housing of the controller body 1, and sends a signal to the input end of the microprocessor 3 through the button in the auxiliary control circuit board 2 to generate a control instruction. The Lora wireless communication module 10 is fixed on the auxiliary control circuit board 2, connected to the serial port of the microprocessor 3, sends the status information to the microprocessor 3, and receives the control signal sent by the microprocessor 3 at the same time, and transmits the control signal to the tower crane main controller. The RFID module 11 is installed on the handheld micro-controller body 1, and scans the hanging object barcode and obtains the hanging object information by cooperating with the operation button. The controller body 1 is equipped with a voice intercom module 12, which is used in conjunction with the operation button to send and receive the audio of other controller bodies 1;

[0035] In this example, the handheld microcontroller is equipped with a positioning component 4, which can obtain the position information of the handheld microcontroller and control the tower crane hook to reach the loading and unloading position where the handheld microcontroller is located;

[0036] Integrated voice intercom module 12 can replace intercom, and only handheld remote control can be used to complete the operation, which is easy to operate, highly efficient and saves use cost;

[0037] Integrated distance detection component 5 detects the distance between the handheld micro controller and the ground. By setting the handheld micro controller to the bottom of the hanging object, the distance between the bottom of the hanging object and the ground can be indirectly obtained, which is convenient for cargo lifting operations;

[0038] Integrated RFID module 11, reads cargo labels and obtains cargo information such as length, width and height;

[0039] Integrated hook drop reminder component 6 to remind the remote control position when the hook drops, improving the safety of hook drop;

[0040] The handheld micro controller can jog control the tower crane operation to achieve precise lifting; Example 2

[0041] like Figure 2 , Figure 3 , Figure 4 and Figure 5 The technical solution shown, in order to solve the problem that the controller body 1 is easily broken when it falls, discloses a protective buffer mechanism, which can protect the controller body 1: a protective cover 13 is nested and installed on the outside of the controller body 1, and a protective buffer mechanism is arranged on the inside of the protective cover 13, and the protective buffer mechanism protects the controller body 1 through the protective cover 13, and the protective buffer mechanism is provided with a pressing plate 14, and the outside of the pressing plate 14 is fixedly installed on the inside of the protective cover 13, an elastic airbag 15 is fixedly installed on the outside of the controller body 1, and an air guide tube 16 is fixedly installed on the inside of the elastic airbag 15, and a buffer airbag 17 is fixedly installed on the inside of the air guide tube 16, the elastic airbag 15 and the buffer airbag 17 are both in the shape of long strips, and the elastic airbag 15 forms a communication structure with the buffer airbag 17 through the air guide tube 16, and the position of the buffer airbag 17 corresponds to that of the protective cover 13;

[0042] In this example, when the controller body 1 falls to the ground, the protective cover 13 is subjected to impact force, which is transmitted to the pressure plate 14 inside the protective cover 13. The pressure plate 14 is subjected to pressure to squeeze the elastic airbag 15. The elastic airbag 15 is squeezed to deliver the gas inside to the buffer airbag 17 through the air guide tube 16. The buffer airbag 17 expands after receiving the gas, pushes outward, and contacts the protective cover 13 to support the protective cover 13, thereby achieving the effect of automatic pop-up support protection, thereby avoiding the problem of damage caused by excessive impact force inside the controller body 1. Example 3

[0043] like Figure 3 , Figure 5 and Figure 6The technical solution shown, in order to solve the problem that the controller body 1 is easy to slip out of the user's hand when the user uses the controller, discloses a snap-fitting mechanism, which can enable the controller body 1 to be tied to the user's arm: a tightening belt 18 is fixedly installed at the bottom of the controller body 1, and a snap-fitting mechanism is provided at the upper left end of the tightening belt 18, and the snap-fitting mechanism limits the user's hand-holding position through the tightening belt 18 to prevent the controller body 1 from falling, and the snap-fitting mechanism is provided with a fixing plate 19, and the lower right end of the fixing plate 19 is fixedly installed on the left end of the tightening belt 18, and A card slot 20 is provided on the left side of the upper end of the fixing plate 19, a dial plate 21 is installed through the bottom of the controller body 1, and a card block 22 is fixedly installed on the right end of the dial plate 21, and a return spring 23 is fixedly installed on the left side of the card block 22, and the left side of the return spring 23 is fixedly installed on the controller body 1, and the return spring 23 is nested and installed on the right side surface of the dial plate 21, the card block 22 and the card slot 20 are both inclined, and the card block 22 forms an elastic structure with the controller body 1 through the return spring 23, and the card block 22 forms a snap-fit ​​structure with the fixing plate 19 through the card slot 20;

[0044] In this example, when the controller body 1 is in use, the fixing plate 19 on the left side of the tightening band 18 is embedded in the groove opened on the left side of the controller body 1. At this time, the fixing plate 19 squeezes the block 22. The block 22 is squeezed and shrinks to the left due to its own inclination. After the block 22 corresponds to the position of the slot 20, the block 22 is automatically engaged in the slot 20 by the elastic force of the return spring 23, and the fixing plate 19 is locked and fixed. At this time, the user can hold the controller body 1 by the tightening band 18 to prevent the controller body 1 from falling easily. When the tightening band 18 needs to be removed, the plate 21 is pushed to the left, and the plate 21 pulls the block 22 to move to the left. The block 22 squeezes the return spring 23, and the block 22 is disengaged from the slot 20, so that the fixing plate 19 can be taken out downward, achieving the effect of convenient removal.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld micro controller for a tower crane, comprising a controller body (1) having an auxiliary control circuit board (2) fixedly mounted inside, and a microprocessor (3), a positioning component (4), a hook drop prompt component (6), a Lora wireless communication module (10), and an RFID module (11) arranged on the surface of the auxiliary control circuit board (2); a distance detection component (5) fixedly mounted on the left side of the controller body (1); a display component (7) arranged on the left side surface of the controller body (1); a power supply component (8) arranged on the right side surface of the controller body (1); and an operating component (9) fixedly mounted on the middle upper surface of the controller body (1); Features: A protective cover (13) is nested and installed on the outer side of the controller body (1), and a protective buffer mechanism is provided on the inner side of the protective cover (13), and the protective buffer mechanism protects the controller body (1) through the protective cover (13); A tightening belt (18) is fixedly mounted on the bottom of the controller body (1), and a snap-fit ​​fixing mechanism is provided on the upper left end of the tightening belt (18). The snap-fit ​​fixing mechanism limits the user's hand-holding position through the tightening belt (18) to prevent the controller body (1) from falling.

2. A handheld micro controller for a tower crane according to claim 1, characterized in that: The microprocessor (3) is the processing core of the controller body (1). It exchanges data with various components through the auxiliary control circuit board (2) to generate control instructions and control the operation of the tower crane. The positioning component (4) comprises a positioning module and a 4G transmission module, which are fixed to the auxiliary control circuit board (2) and connected to the serial port of the microprocessor (3) to provide the microprocessor (3) with positioning data of the handheld micro-controller body (1). The 4G transmission module is installed on the auxiliary control circuit board (2) and connected to the serial port of the microprocessor (3) to receive the query data of the positioning base station and send it to the microprocessor (3). The distance detection component (5) comprises a laser radar and a wire reel. The laser radar is installed at the bottom of the handheld micro-controller body (1) to detect the distance between the handheld micro-controller body (1) and the ground; the wire reel is installed on the tower crane hook to connect the hook and the controller body (1) to adjust the position of the controller body (1).

3. A handheld micro controller for a tower crane according to claim 1, characterized in that: The hook drop prompt component (6) comprises a signal light and a sound module, which are installed in the controller body (1) and exchange data with the microprocessor (3) through the auxiliary control circuit board (2). When the prompt condition is reached, the microprocessor (3) controls the signal light to flash and controls the sound module to emit a warning audio. The display component (7) comprises a display screen and a display screen driver, which are installed on the housing of the controller body (1). The display screen is connected to the display screen driver, and the display screen driver is connected to the corresponding interface of the auxiliary control circuit board (2). The display content sent by the microprocessor (3) is received and displayed on the display screen. The display content includes operating status, fault information, battery power and signal quality. The power supply component (8) comprises a power supply device and a power supply processing module, which are installed on the housing of the controller body (1). The power supply device is connected to the power supply processing module, and the power supply is processed by the power supply processing module to supply power to the controller body (1).

4. A handheld micro controller for a tower crane according to claim 1, characterized in that: The operating component (9) includes ascending, descending, left turn, right turn, forward, backward, manual application, jog application, calling, one-key hook raising, confirmation, cancellation, power on and off, and emergency stop. The operating component (9) is mounted on the housing of the controller body (1), and sends a signal to the input end of the microprocessor (3) through a button in the auxiliary control circuit board (2) to generate a control instruction. The Lora wireless communication module (10) is fixed on the auxiliary control circuit board (2), connected to the serial port of the microprocessor (3), sends status information to the microprocessor (3), and receives the control signal sent by the microprocessor (3) at the same time, and transmits the control signal to the tower crane main controller. The RFID module (11) is mounted on the handheld micro-controller body (1), and scans the hanging object barcode in cooperation with the operating button to obtain the hanging object information. The controller body (1) is installed with a voice intercom module (12), which is used in cooperation with the operating button to send and receive the audio of the controller body (1).

5. The handheld micro controller for tower crane according to claim 1, characterized in that: The protective buffer mechanism is provided with a pressure plate (14), and the outer side of the pressure plate (14) is fixedly mounted on the inner side of the protective cover (13); an elastic air bag (15) is fixedly mounted on the inner side of the outer side of the controller body (1), an air guide tube (16) is fixedly mounted on the inner side of the elastic air bag (15), and a buffer air bag (17) is fixedly mounted on the inner side of the air guide tube (16).

6. A handheld micro controller for a tower crane according to claim 5, characterized in that: The elastic airbag (15) and the buffer airbag (17) are both in the shape of an elongated strip, and the elastic airbag (15) forms a communication structure with the buffer airbag (17) via the air guide tube (16), and the buffer airbag (17) corresponds to the position of the protective cover (13).

7. A handheld micro controller for a tower crane according to claim 1, characterized in that: The locking and fixing mechanism is provided with a fixing plate (19), and the lower right end of the fixing plate (19) is fixedly mounted on the left end of the tightening belt (18), and a locking groove (20) is provided on the left side of the upper end of the fixing plate (19); a dial plate (21) is installed through the bottom of the controller body (1), and a clamping block (22) is fixedly mounted on the right end of the dial plate (21), and a return spring (23) is fixedly mounted on the left side of the clamping block (22), and the left side of the return spring (23) is fixedly mounted on the controller body (1), and the return spring (23) is nested on the right side surface of the dial plate (21).

8. A handheld micro controller for a tower crane according to claim 7, characterized in that: The shapes of the card block (22) and the card slot (20) are both inclined, and the card block (22) forms an elastic structure with the controller body (1) through a return spring (23), and the card block (22) forms a snap-fit ​​structure with the fixing plate (19) through the card slot (20).

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