Multifunctional limiter for crane and method thereof

Abstract

The invention discloses a crane multifunctional limiter and a method thereof, and particularly relates to the technical field of crane limiters, the crane multifunctional limiter comprises a reinforcing machine shell, a control feedback assembly is arranged on the reinforcing machine shell, the control feedback assembly comprises a flange plate arranged on one side of the reinforcing machine shell, and a first encoder is arranged in the reinforcing machine shell. Through friction between the limiting abutting block and the cam set when the traction wheel rotates, the function of positioning and locking after the traction wheel rotates is achieved, the situation that the traction wheel falls off during winding due to rotation is avoided, the stability and safety during hoisting are ensured, and the multi-protection function is achieved; meanwhile, the worm rotates synchronously with the transmission code disc and the input shaft to enable the induction magnetic sheet to rotate and to be mutually induced with the second encoder, so that a single-circle angular displacement signal of the induction magnetic sheet can be effectively obtained, and synchronous monitoring and verification are easy; and the PCB mainboard receives the first encoder and the second encoder at the same time to carry out real-time mutual data verification.

Description

Technical Field

[0001] The present invention relates to the technical field of crane limiters, and more particularly to a multifunctional crane limiter and a method thereof. Background Art

[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. It is also called a crane. Some cranes have the working characteristics of intermittent movement, that is, the corresponding mechanisms of taking materials, moving, unloading, etc. work alternately in one working cycle. The development and use of cranes in the market are becoming more and more extensive.

[0003] Among them, the patent with publication number CN219449052U discloses an overload limiter for a crane, which relates to the technical field of overload limiters, including a connecting structure, a connecting block is arranged below the connecting structure, a telescopic block is slidably connected to the lower surface of the connecting block, a mounting block is fixedly connected to the lower surface of the telescopic block, a hook is arranged below the mounting block, the telescopic block is slidably connected to the surface of the first groove, a first laser receiving device, a second laser receiving device and a third laser receiving device are installed on the surface of the limiting groove on the right side of the first groove, a first signal light, a second signal light and a third signal light are installed on the outer surface of the connecting block, a lifting block is slidably connected to the surface of the second groove, and a micro switch is installed on the upper surface of the lifting block.

[0004] When this structure is in use, the purpose of facilitating observation of the weight of the cargo is achieved through the setting of three groups of laser transceivers and three groups of signal lights. The purpose of automatic braking of the crane after overweight is achieved through the setting of micro switches and signal sending modules. However, the limiter has only one control loop and cannot realize different controls such as upper deceleration, lower deceleration, and lower limit. This requires multiple components to achieve, which also increases the cost of use and is not easy to monitor and feedback real-time data of the entire displacement stroke. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multifunctional crane limiter and method thereof, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a multifunctional limiter for a crane, comprising a reinforced casing, on which a control feedback component is arranged.

[0007] The control feedback component includes a flange plate arranged on one side of the reinforced housing, a first encoder is arranged inside the reinforced housing, an input shaft is rotatably connected to one end of the reinforced housing, a PCB main board is sleeved on the outer side of the input shaft, the PCB main board is located inside the reinforced housing, a second encoder is fixedly arranged on one side of the PCB main board, a transmission code disk is installed on the input shaft through a flange, a display screen is connected to the second encoder through an electrode, a frame opening is opened through the surface of the reinforced housing, the display screen passes through the frame opening and extends to the outside of the reinforced housing, a speed measuring switch is arranged on the outside of the transmission code disk, a transmission gear is rotatably connected to the first encoder, the transmission gear is meshed with the transmission code disk, an induction magnetic sheet that mutually senses the second encoder is arranged at one end of the transmission gear, a plurality of control buttons are arranged on the display screen, and the display screen is connected to the PCB main board through electrodes.

[0008] It can be seen that in the above technical solution, when the input shaft rotates, it drives the transmission code disk and the worm to rotate. When the transmission code disk rotates, it meshes with the transmission gear and causes the transmission gear to rotate. When the transmission gear rotates, it drives the induction magnetic plate to rotate and sense each other with the second encoder, so that the single-turn angular displacement signal of the induction magnetic plate can be effectively obtained.

[0009] A worm is fixedly provided at one end of the input shaft, the worm is located in the reinforced housing, a worm wheel is provided at one side of the worm, the worm wheel meshes with the worm, a cam group is fixedly provided at the outer side of the reinforced housing, a switch group is fixedly provided at one end of the cam group, a plurality of traction wheels are rotatably connected to the cam group, the plurality of traction wheels are fixedly connected to the worm wheel through a rotating shaft, a plurality of limit stops are fixedly provided on both sides of the traction wheel, a plurality of joints are threadedly connected to the outer side of the reinforced housing, a partition plate (301) is provided at one side of one of the first encoders, the partition plate is installed inside the reinforced housing by bolts, a protective cover is installed on the partition plate by bolts, the protective cover is wrapped around the outer side of the first encoder, a mounting frame is sleeved on the outer side of the input shaft, the mounting frame is arranged on the outer side of the reinforced housing and is detachably connected to the reinforced housing by bolts.

[0010] It can be seen that in the above technical solution, when the input shaft rotates, it drives the worm to rotate, and when the worm rotates, it meshes with the worm wheel, and then the rotating shaft on the worm wheel drives the traction wheel to rotate, thereby realizing the function of winding during lifting, and when the traction wheel rotates, the limit stop block rubs against the cam group, thereby realizing the function of positioning and locking the traction wheel after rotation, thereby preventing the traction wheel from falling off during winding due to the rotation of the traction wheel.

[0011] A method of use, using the above-mentioned crane multifunctional limiter, comprises the following steps:

[0012] Step 1: The staff installs the device at the designated location, and long presses the control button. The display screen flashes to show the current alarm value. The external motor is turned on to the limit speed, and the host automatically detects the speed. When the data displayed by the host does not jump, it is the highest speed. Short press the control button to set the speed as the alarm value, and exit the setting mode. The data is automatically saved, and the set data is the alarm value, that is, the maximum speed of the motor; the host will automatically set the warning value;

[0013] Step 2, general settings: short press the control button, the red light will light up, enter the alarm value setting, and the display will flash; you can short press or long press the plus or minus button to the specified value, short press the display, the blue light will light up, enter the warning value setting, and the display will flash; you can short press or long press the plus or minus button to the specified value, short press the display, the indicator light will not light up, and enter the alarm reset time value setting: if the set time value is zero, the built-in relay will not release after being triggered until the power is turned off. If the displayed value is not zero, the relay will start counting down according to the set reset time after being triggered;

[0014] Step 3. Short press the Set button to enter the time unit setting: S is for seconds, M is for minutes, H is for hours. Short press the Set button to exit the setting mode and the data will be automatically saved.

[0015] Step 4: The input shaft is driven to rotate by an external motor. When the input shaft rotates, the transmission code disc and the worm are driven to rotate. When the transmission code disc rotates, it meshes with the transmission gear and causes the transmission gear to rotate. When the transmission gear rotates, the induction magnetic sheet is driven to rotate and sense each other with the second encoder, so that the single-turn angular displacement signal of the induction magnetic sheet can be effectively obtained.

[0016] Step five, when the input shaft rotates, it drives the worm to rotate, and when the worm rotates, it meshes with the worm wheel, and then the rotating shaft on the worm wheel drives the traction wheel to rotate, realizing the function of winding during lifting, and when the traction wheel rotates, the limit stop block rubs against the cam group, realizing the function of positioning and locking the traction wheel after rotation, to prevent the traction wheel from falling off during winding due to the rotation of the traction wheel.

[0017] Technical effects and advantages of the present invention:

[0018] 1. When the worm of the present invention rotates, it meshes with the worm wheel, and then the rotating shaft on the worm wheel drives the traction wheel to rotate, so as to realize the function of winding during hoisting. When the traction wheel rotates, the limit stopper rubs against the cam group, so as to realize the function of positioning and locking the traction wheel after rotation, so as to avoid the traction wheel rotating and causing the traction wheel to fall off during winding, thus ensuring the stability and safety during hoisting, and playing the function of multiple protection;

[0019] 2. The present invention drives the transmission code disc and the worm to rotate when the input shaft rotates. When the transmission code disc rotates, it meshes with the transmission gear and causes the transmission gear to rotate. When the transmission gear rotates, it drives the induction magnetic sheet to rotate and sense each other with the second encoder, which can effectively obtain the single-turn angular displacement signal of the induction magnetic sheet, and is easy to synchronously monitor and verify. In addition, the turbine and the worm drive form a primary reduction ratio, and the turbine drives the subsequent gear transmission to form a secondary transmission, thereby ensuring transmission stability.

[0020] 3. The first encoder of the present invention sends a signal to the PCB main board via a wire. The PCB main board simultaneously receives data from the first encoder and the second encoder for real-time mutual verification. If the mutual verification fails, an alarm signal is sent to the host, thereby realizing the functions of stroke control, real-time stroke monitoring, overspeed limit protection and mutual verification.

[0021] To sum up, through the corresponding coordinated use of various structures, the worm wheel drives the rotating shaft and the traction wheel to rotate through the worm drive, so as to realize the function of winding during hoisting, and when the traction wheel rotates, the limit stop block rubs against the cam group, so as to realize the function of positioning and locking the traction wheel after rotation, so as to avoid the traction wheel rotating and causing it to fall off during winding, ensure the stability and safety during hoisting, and play a multiple protection function. At the same time, the worm rotates synchronously with the transmission code disk and the input shaft, and then the induction magnetic piece rotates and senses each other with the second encoder, so as to effectively obtain the single-turn angular displacement signal of the induction magnetic piece, which is easy to monitor and verify synchronously. The first encoder sends the signal to the PCB main board through the wire, and the PCB main board simultaneously receives the data of the first encoder and the second encoder for real-time mutual verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention, the following briefly introduces the drawings required to be used in some embodiments of the present invention. Obviously, the drawings described below are only drawings of some embodiments of the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present invention, the actual process of the method, the actual timing of the signal, etc.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is an exploded view of the overall structure of the present invention.

[0025] Figure 3 It is a stereoscopic diagram of the connector, the reinforced housing, the mounting bracket, the second encoder and the PCB mainboard of the present invention.

[0026] Figure 4 It is a stereoscopic diagram of the flange, the first encoder and the transmission gear of the present invention.

[0027] Figure 5 It is a stereoscopic diagram of the cam group, the switch group and the traction wheel of the present invention.

[0028] Figure 6 It is a stereoscopic diagram of the partition plate, worm wheel, input shaft, worm, transmission code disc and first encoder of the present invention.

[0029] Figure 7 It is a stereoscopic diagram of the transmission gear, transmission code disc, speed measuring switch and worm of the present invention.

[0030] Figure 8 It is a stereoscopic diagram of the cam group, traction wheel and limit stop block of the present invention.

[0031] The accompanying drawings are marked as follows:

[0032] 1. Strengthen the housing; 101. Flange; 102. First encoder; 103. PCB motherboard; 104. Second encoder; 105. Display screen; 106. Input shaft; 107. Transmission code disk; 108. Speed ​​switch; 109. Transmission gear; 110. Control button; 111. Induction magnetic sheet;

[0033] 2. Worm; 201. Worm wheel; 202. Cam group; 203. Switch group; 204. Traction wheel; 205. Limit stop block;

[0034] 3. Joint; 301. Partition plate; 302. Protective cover; 303. Mounting frame. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] As attached Figure 1 -A multifunctional limiter for a crane as shown in 8, by strengthening the control feedback component set on the casing 1, the worm wheel 201 drives the rotating shaft and the traction wheel 204 to rotate through the worm 2, so as to realize the function of winding during hoisting, and when the traction wheel 204 rotates, the limit stop block 205 rubs against the cam group 202, so as to realize the function of positioning and locking the traction wheel 204 after rotation, so as to avoid the traction wheel 204 rotating and causing it to fall off during winding, ensure the stability and safety during hoisting, and play a multiple protection function, at the same time, the worm 2 rotates synchronously with the transmission code disk 107 and the input shaft 106, so as to make the induction magnetic sheet 111 rotate and mutually sense with the second encoder 104, so as to effectively obtain the single-turn angular displacement signal of the induction magnetic sheet 111, and facilitate synchronous monitoring and verification, the first encoder 102 sends the signal to the PCB main board 103 through the wire, and the PCB main board 103 simultaneously receives the first encoder 102 and the second encoder 104 for real-time mutual verification of data, and the specific structure of the component is set as follows;

[0039] The control feedback component includes a flange 101 arranged on one side of the reinforced housing 1, a first encoder 102 is arranged inside the reinforced housing 1, an input shaft 106 is rotatably connected to one end of the reinforced housing 1, a PCB main board 103 is sleeved on the outer side of the input shaft 106, the PCB main board 103 is located inside the reinforced housing 1, a second encoder 104 is fixedly arranged on one side of the PCB main board 103, a transmission code disc 107 is installed on the input shaft 106 through a flange, so that the transmission code disc 107 can be driven to rotate when the input shaft 106 rotates, so as to detect the rotation speed, a display screen 105 is connected to the second encoder 104 through an electrode, a frame opening is opened through the surface of the reinforced housing 1, and the display screen 105 passes through the frame opening and It extends to the outside of the reinforced casing 1, and a speed measuring switch 108 is arranged on the outside of the transmission code disk 107, which is easy to measure the speed of the transmission code disk 107 through the speed measuring switch 108. A transmission gear 109 is rotatably connected to the first encoder 102, and the transmission gear 109 is meshed with the transmission code disk 107. One end of the transmission gear 109 is provided with an induction magnetic piece 111 that is mutually inductive with the second encoder 104. When the transmission gear 109 rotates, it drives the induction magnetic piece 111 to rotate and mutually inductively with the second encoder 104, and can effectively obtain a single-turn angular displacement signal of the induction magnetic piece 111. A plurality of control buttons 110 are arranged on the display screen 105, and the display screen 105 is connected to the PCB main board 103 through electrodes.

[0040] A worm 2 is fixedly provided at one end of the input shaft 106, and the worm 2 is located in the reinforced housing 1. A worm wheel 201 is provided on one side of the worm 2, and the worm wheel 201 meshes with the worm 2. When the input shaft 106 rotates, the worm 2 is driven to rotate, and when the worm 2 rotates, it meshes with the worm wheel 201, so that the rotating shaft on the worm wheel 201 drives the traction wheel 204 to rotate, so as to realize the function of winding during hoisting. A cam group 202 is fixedly provided on the outer side of the reinforced housing 1, and a switch group 203 is fixedly provided at one end of the cam group 202. A plurality of traction wheels 204 are rotatably connected to the cam group 202, and the plurality of traction wheels 204 are fixedly connected to the worm wheel 201 through the rotating shaft. A plurality of limit blocks 205 are fixedly provided on both sides of the traction wheel 204, and the limit blocks 205 rub against the cam group 202 to realize the traction. After the guide wheel 204 rotates, it has the function of positioning and locking to prevent the traction wheel 204 from falling off during winding due to its rotation. The outer side of the reinforced casing 1 is threadedly connected with several joints 3. A partition plate 301 is provided on one side of the first encoder 102. The partition plate 301 is installed inside the reinforced casing 1 by bolts. A protective cover 302 is installed on the partition plate 301 by bolts. The protective cover 302 is wrapped around the outer side of the first encoder 102 to separate the first encoder 102 to prevent it from being damaged. A mounting bracket 303 is provided on the outer side of the input shaft 106. The mounting bracket 303 is arranged on the outer side of the reinforced casing 1 and is detachably connected to the reinforced casing 1 by bolts. It is used to support the input shaft 106 to prevent the input shaft 106 from being offset by force, so as to ensure the stability of the input shaft 106 during transmission.

[0041] A method of use, using the above-mentioned crane multifunctional limiter, comprises the following steps:

[0042] Step 1: The staff installs the device at the designated location, and long presses the control button 110. The display screen 105 flashes to display the current alarm value. The external motor is turned on to the limit speed. The host automatically detects the speed. When the data displayed by the host does not jump, it is the highest speed. Short press the control button 110 to set the speed as the alarm value, and exit the setting mode. The data is automatically saved, and the set data is the alarm value, that is, the maximum speed of the motor; the host will automatically set the warning value;

[0043] Step 2, general setting: short press the control button 110, the red light is on, enter the alarm value setting, and the display screen 105 flashes; you can short press or long press the plus or minus key to the specified value, short press the display screen 105, the blue light is on, enter the warning value setting, and the display screen 105 flashes; you can short press or long press the plus or minus key to the specified value, short press the display screen 105, the indicator light is off, and enter the alarm reset time value setting: if the set time value is zero, the built-in relay will not release after being triggered until the power is turned off. If the displayed value is not zero, the relay will start counting down according to the set reset time after being triggered;

[0044] Step 3. Short press the Set button to enter the time unit setting: S is for seconds, M is for minutes, H is for hours. Short press the Set button to exit the setting mode and the data will be automatically saved.

[0045] Step 4: The input shaft 106 is driven by an external motor to rotate. When the input shaft 106 rotates, the transmission code disc 107 and the worm 2 are driven to rotate. When the transmission code disc 107 rotates, it meshes with the transmission gear 109 and causes the transmission gear 109 to rotate. When the transmission gear 109 rotates, it drives the induction magnetic sheet 111 to rotate and sense each other with the second encoder 104, so that the single-turn angular displacement signal of the induction magnetic sheet 111 can be effectively obtained.

[0046] Step five, when the input shaft 106 rotates, the worm 2 is driven to rotate, and the worm 2 is meshed with the worm wheel 201 when rotating, so that the rotating shaft on the worm wheel 201 drives the traction wheel 204 to rotate, realizing the function of winding during lifting, and when the traction wheel 204 rotates, the limit stop block 205 rubs against the cam group 202, realizing the function of positioning and locking the traction wheel 204 after rotation, to prevent the traction wheel 204 from falling off during winding due to the rotation of the traction wheel 204.

[0047] When the above structure is in use, the input shaft 106 is driven by an external motor to rotate. When the input shaft 106 rotates, it drives the transmission code disk 107 and the worm 2 to rotate. When the transmission code disk 107 rotates, it meshes with the transmission gear 109 and causes the transmission gear 109 to rotate. When the transmission gear 109 rotates, it drives the induction magnetic sheet 111 to rotate and sense each other with the second encoder 104, so that the single-turn angular displacement signal of the induction magnetic sheet 111 can be effectively obtained. At the same time, when the input shaft 106 rotates, it drives the worm 2 to rotate. When the worm 2 rotates, it meshes with the worm wheel 201, and then the rotating shaft on the worm wheel 201 drives the traction wheel 204 to rotate, so as to realize the function of winding during hoisting, and when the traction wheel 204 rotates, the limit stop block 205 rubs against the cam group 202, so as to realize the function of positioning and locking the traction wheel 204 after it rotates, so as to prevent the traction wheel 204 from falling off during winding due to the rotation of the traction wheel 204.

[0048] Different from the prior art, the present application discloses a multifunctional limiter and method for a crane, wherein the worm gear 201 drives the rotating shaft and the traction wheel 204 to rotate through the worm 2, thereby realizing the function of winding during hoisting, and when the traction wheel 204 rotates, the limit stop block 205 rubs against the cam group 202, thereby realizing the function of positioning and locking the traction wheel 204 after rotation, thereby preventing the traction wheel 204 from falling off during winding due to the rotation, thereby ensuring the stability and safety during hoisting, and playing a multiple protection function. At the same time, the worm 2 rotates synchronously with the transmission code disk 107 and the input shaft 106, thereby causing the induction magnetic sheet 111 to rotate and mutually induct with the second encoder 104, thereby effectively obtaining a single-turn angular displacement signal of the induction magnetic sheet 111, and facilitating synchronous monitoring and verification. The first encoder 102 sends a signal to the PCB mainboard 103 via a wire, and the PCB mainboard 103 simultaneously receives the data of the first encoder 102 and the second encoder 104 for real-time mutual verification.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional limiter for a crane, comprising a reinforced housing (1), characterized in that: The reinforced housing (1) is provided with a control feedback component; The control feedback component comprises a flange (101) arranged on one side of the reinforced housing (1); a first encoder (102) is arranged inside the reinforced housing (1); an input shaft (106) is rotatably connected to one end of the reinforced housing (1); a PCB mainboard (103) is sleeved on the outer side of the input shaft (106); the PCB mainboard (103) is located inside the reinforced housing (1); a second encoder (104) is fixedly arranged on one side of the PCB mainboard (103); and a transmission code disc (107) is mounted on the input shaft (106) via a flange; A worm (2) is fixedly provided at one end of the input shaft (106), the worm (2) is located in the reinforced housing (1), a worm wheel (201) is provided on one side of the worm (2), the worm wheel (201) is meshed with the worm (2), and a cam group (202) is fixedly provided on the outer side of the reinforced housing (1).

2. The multifunctional crane limiter according to claim 1, characterized in that: The second encoder (104) is connected to a display screen (105) via electrodes, a frame opening is provided through the surface of the reinforced housing (1), and the display screen (105) passes through the frame opening and extends to the outside of the reinforced housing (1).

3. The multifunctional crane limiter according to claim 1, characterized in that: A speed measuring switch (108) is arranged on the outer side of the transmission code disc (107), and a transmission gear (109) is rotatably connected to the first encoder (102).

4. The multifunctional crane limiter according to claim 3, characterized in that: The transmission gear (109) is meshed with the transmission code disc (107), and one end of the transmission gear (109) is provided with an induction magnetic sheet (111) that is mutually inductive with the second encoder (104).

5. The multifunctional crane limiter according to claim 2, characterized in that: A plurality of control buttons (110) are arranged on the display screen (105), and the display screen (105) is connected to the PCB main board (103) via electrodes.

6. The multifunctional crane limiter according to claim 1, characterized in that: A switch group (203) is fixedly arranged at one end of the cam group (202), and a plurality of traction wheels (204) are rotatably connected to the cam group (202).

7. The multifunctional crane limiter according to claim 6, characterized in that: The plurality of traction wheels (204) are fixedly connected to the worm wheel (201) via a rotating shaft, and a plurality of position limiting blocks (205) are fixedly arranged on both sides of the traction wheel (204).

8. The multifunctional crane limiter according to claim 1, characterized in that: The outer side of the reinforced housing (1) is threadedly connected to a plurality of joints (3); a partition plate (301) is provided on one side of the first encoder (102); the partition plate (301) is installed inside the reinforced housing (1) by means of bolts; a protective cover (302) is installed on the partition plate (301) by means of bolts; the protective cover (302) is wrapped around the outer side of the first encoder (102).

9. The multifunctional crane limiter according to claim 1, characterized in that: The outer side of the input shaft (106) is sleeved with a mounting frame (303), and the mounting frame (303) is arranged on the outer side of the reinforced casing (1) and is detachably connected to the reinforced casing (1) via bolts.

10. A method of use, using the multifunctional crane limiter according to any one of claims 1 to 9, characterized in that: The following steps are included: Step 1: The staff installs the device at the designated location, and long presses the control button (110), the display screen (105) flashes and displays the current alarm value, the external motor is turned on to the limit speed, the host automatically detects the speed, and observes that the data displayed by the host does not jump when it is the highest speed. The staff short presses the control button (110) to set the speed as the alarm value, and exits the setting mode. The data is automatically saved, and the set data is the alarm value, that is, the maximum speed of the motor; the host will automatically set the warning value; Step 2, general setting: short press the control button (110) to enter the alarm value setting, and the display screen (105) flashes; the plus or minus key can be short pressed or long pressed to a specified value, and the display screen (105) can be short pressed to enter the warning value setting, and the display screen (105) flashes; the plus or minus key can be short pressed or long pressed to a specified value, and the display screen (105) can be short pressed to enter the alarm reset time value setting; Step 3. Short press the Set button to enter the time unit setting: S is for seconds, M is for minutes, H is for hours. Short press the Set button to exit the setting mode and the data will be automatically saved. Step 4: When the input shaft (106) rotates, the transmission code disc (107) and the worm (2) are driven to rotate. When the transmission code disc (107) rotates, it meshes with the transmission gear (109) and causes the transmission gear (109) to rotate. When the transmission gear (109) rotates, it drives the induction magnetic sheet (111) to rotate and mutually sense with the second encoder (104), so that a single-turn angular displacement signal of the induction magnetic sheet (111) can be effectively obtained; Step 5: When the worm (2) rotates, it meshes with the worm wheel (201), so that the rotating shaft on the worm wheel (201) drives the traction wheel (204) to rotate, thereby realizing the function of winding up during hoisting, and when the traction wheel (204) rotates, the limit stop block (205) rubs against the cam group (202), thereby realizing the function of positioning and locking the traction wheel (204) after rotation, thereby preventing the traction wheel (204) from falling off during winding up due to the rotation of the traction wheel (204).

Images