Anti-back early warning device for pin shaft of tower crane standard knot

Abstract

The utility model relates to the technical field of building construction equipment, and discloses a pin shaft anti-retreating early warning device for a tower crane standard knot in order to solve the problem that an effective early warning device for monitoring the loosening condition of a pin shaft is lacked in the prior art. Which comprises two pin shaft holes formed in the two sides of the side wall of a standard knot and pin shafts arranged on the pin shaft holes, and is characterized in that the pin shaft holes are formed in the upper ends of the pin shafts and are transversely inserted and fixed through cotter pins, compression springs are arranged between the ends of the pin shafts and the standard knot, detection chips are embedded in the compression springs, and the detection chips are connected with a control module through wires. The control module is further connected with an early warning module. The compressible spring is installed in the space between the pin shaft cotter pin and the surface of the standard knot, and the looseness state of the pin shaft is detected through the expansion amount of the spring. When the control module detects that the pin shaft is loosened, the early warning module can send out an early warning signal in time, and safety accidents caused by loosening of the pin shaft can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of building construction equipment, in particular to a pin shaft anti-retraction early warning device for a standard section of a tower crane. Background Art

[0002] Tower cranes, also known as "tower cranes," are the most commonly used lifting equipment on construction sites. They are connected in lengths (heights) of several sections (referred to as "standard sections") and are used to lift materials such as steel bars, wooden planks, concrete, and steel pipes for construction. Tower cranes are essential equipment on construction sites. The function of the tower crane tip is to bear the upper load transmitted by the boom and counter-arm cables, and transmit this load directly to the tower structure through the slewing tower, turntable, and bearing components. Self-elevating tower tops can be truncated cone columns, forward- or backward-inclined truncated cone columns, herringbone frames, or diagonal braces. All slewing tower cranes require a counterweight to support the counterweight and create the required balancing torque in the opposite direction of the lifting torque.

[0003] During construction, tower cranes require pins to connect their standard sections to ensure stability. Traditionally, these pins are used. However, during construction, they can become loose or even fall off due to factors such as crane sway, vibration, and wind. A tower crane can have hundreds of pins, and if these are not detected in time, they can seriously impact the crane's safety. Existing technologies lack effective early warning devices to monitor pin loosening, posing a significant safety hazard. Utility Model Content

[0004] The purpose of the utility model is to provide a pin shaft anti-retraction early warning device for a tower crane standard section, so as to solve the technical problem that the existing probe cannot detect the loose state of the pin shaft.

[0005] To achieve the above-mentioned purpose, the specific technical solution of the pin shaft anti-retraction warning device of the tower crane standard section of the present invention is as follows:

[0006] A pin shaft anti-retraction warning device for the standard section of a tower crane comprises two pin shaft holes arranged on both sides of the side wall of the standard section, a pin shaft is arranged on the pin shaft hole, a pin shaft hole is arranged on the upper end of the pin shaft and is fixed by horizontal insertion of a cotter pin, a compression spring is arranged between the end of the pin shaft and the standard section, a detection chip is embedded in the compression spring, the detection chip is connected to a control module via a wire, and the control module is also connected to an early warning module.

[0007] Furthermore, the connection control module includes a microcontroller for processing detection chip signals and a wireless communication module for information transmission.

[0008] Furthermore, the early warning module includes an audible and visual alarm device for on-site alarm and a wireless alarm device for universal language remote alarm.

[0009] Furthermore, the distance between the cotter pin and the surface of the standard section is set to 5CM, and the compression spring is set within the distance between the cotter pin and the surface of the standard section.

[0010] Furthermore, the wireless communication module is connected to an Internet of Things platform for further overall scheduling and early warning.

[0011] Furthermore, the control module and the early warning module are connected on a PCB board and are connected to a detection chip via a wire.

[0012] Furthermore, the PCB board can be flexibly positioned. The utility model provides a pin shaft anti-retraction warning device for a tower crane standard section, which has the following advantages:

[0013] 1. The detection module detects the position of the pin shaft and transmits it to the early warning module to realize the early warning of pin shaft loosening.

[0014] 2. The setting of the compression spring has a dual function. On the one hand, the internal force of the spring itself forms a support between the cotter pin and the surface of the standard section, reducing the frequency of pin loosening; on the other hand, the pin state is detected by the expansion and contraction of the spring, realizing pin withdrawal warning and ensuring the safe operation of the tower crane.

[0015] 3. Through the sound and light alarm device of the early warning module and then the wireless alarm device, the dual alarm setting of on-site alarm and remote alarm is realized.

[0016] 4. By connecting to the remote control module, the overall control and early warning of the entire platform can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a standard section provided by the utility model;

[0018] Figure 2 This is a schematic diagram of the pin pre-tightening device on one side of the standard section provided by the utility model;

[0019] Figure 3 This is a signal transmission flow chart of the device provided by the utility model;

[0020] Figure 4 This is a schematic diagram of the workflow of the remote monitoring platform provided by the utility model.

[0021] In the figure: 1. Pin; 2. Split pin; 3. Detection chip; 4. Control module; 5. Early warning module; 6. Compression spring; 7. Wire. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Example 1

[0024] See Figures 1 to 4 , The utility model provides a pin shaft anti-retreat warning device for a tower crane standard section, which is used for testing probes. A pin shaft anti-retreat warning device for a tower crane standard section comprises two pin shaft holes arranged on both sides of the side wall of the standard section, a pin shaft 1 is arranged on the pin shaft hole, and the pin shaft 1 has a cotter pin 2 at only one end, which is inserted horizontally into the pin shaft hole for fixing the two standard sections, and the distance between the cotter pin 2 of the pin shaft 1 and the surface of the standard section is 5 cm; a compression spring 6 is arranged between the end of the pin shaft 1 and the standard section, and the compression spring 6 is installed in the 5 cm space from the cotter pin 2 of the pin shaft 1 to the surface of the standard section. A detection chip 3 is embedded in the compression spring 6, and the state of the pin shaft 1 is fed back by the numerical value of the spring expansion and contraction; the detection chip 3 is connected to the control module 4 through a wire 7, and the control module 4 is used to receive and process the signal of the detection chip 3, and the warning module 5 is connected to the control module 4, and is used to send a warning signal when the control module 4 detects that the pin shaft 1 is loose.

[0025] The spring detection chip 3 detects the amount of spring expansion and contraction, and through the control module 4 calculates the applied force F. Using the formula F = k·X (where k is the spring constant and X is the length of extension or contraction), it determines whether the pin 1 is in the withdrawn state. If the withdrawn distance reaches a specified value, the warning module 5 generates a warning signal based on the detection results of the control module 4.

[0026] Example 2

[0027] Based on the first embodiment, control module 4 includes a microcontroller and a wireless communication module. The microcontroller processes the signals from detection chip 3, and the wireless communication module transmits the processed information to the remote monitoring platform. Early warning module 5 includes an audible and visual alarm device for on-site alarms and a wireless alarm device for remote alarms.

[0028] Furthermore, the early warning module 5 includes an audible and visual alarm device and a wireless communication module. The audible and visual alarm device is used for on-site alarm, and the wireless alarm device is used for transmitting alarm information to a remote monitoring platform.

[0029] The remote monitoring platform further includes a display module, an identity recognition module, a voice transceiver module, a voice recognition module, and a command sending module. The control module 4 processes the data signal detected by the detection chip 3 and transmits it to the remote monitoring platform via the wireless communication module. The status of the pin 1 is displayed on the display module on the remote monitoring platform. The identity recognition module identifies the operator's identity through information such as fingerprints, then receives the operator's voice information through the voice transceiver module, and the voice recognition module recognizes the voice for further identity verification. Finally, the command sending module controls the warning signal of the warning module 5. The warning module 5 can also transmit the processed data signal to the remote monitoring platform via the wireless transmission module, display it on the display module, and issue a warning prompt sound through the voice transceiver module to complete the warning of the risk of the pin 1 loosening.

[0030] Example 3

[0031] Furthermore, based on the second embodiment, the wireless communication module is connected to an IoT platform for further overall dispatch and early warning. Through this IoT platform, the tower crane control center numbers and categorizes each tower crane, making the position of each crane's pin 1 traceable. If a pin 1 backout warning is issued on the platform, the pin 1 position can be immediately identified and addressed, improving the safety and reliability of the tower crane.

[0032] Preferably, the compression spring 6 of the present invention has a dual function. On the one hand, the internal force of the spring itself forms a support between the cotter pin 2 and the surface of the standard section, thereby reducing the frequency of loosening of the pin shaft 1. On the other hand, the state of the pin shaft 1 is detected by the expansion and contraction of the spring, thereby realizing a pin withdrawal warning and ensuring the safe operation of the tower crane.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pin shaft anti-retraction warning device for a tower crane standard section, comprising two pin shaft holes provided on both sides of the side wall of the standard section, wherein a pin shaft (1) is provided on the pin shaft holes, characterized in that: The upper end of the pin shaft (1) is provided with a pin shaft hole and is laterally inserted and fixed by a cotter pin (2); a compression spring (6) is provided between the end of the pin shaft (1) and the standard section; a detection chip (3) is embedded in the compression spring (6); the detection chip (3) is connected to a control module (4) via a wire (7); and the control module (4) is further connected to an early warning module (5).

2. The pin shaft anti-retraction warning device for the tower crane standard section according to claim 1 is characterized in that: The connection control module (4) comprises a microcontroller for processing signals from the detection chip (3) and a wireless communication module for information transmission.

3. The pin shaft anti-retraction warning device for the tower crane standard section according to claim 1 is characterized in that: The early warning module (5) comprises an audible and visual alarm device for on-site alarm and a wireless alarm device for universal language remote alarm.

4. The pin shaft anti-retraction warning device for the tower crane standard section according to claim 1 is characterized in that: The distance between the cotter pin (2) and the surface of the standard section is set to 5CM, and the compression spring (6) is set within the distance between the cotter pin (2) and the surface of the standard section.

5. The pin shaft anti-retraction warning device for the tower crane standard section according to claim 2 is characterized in that: The wireless communication module is connected to the Internet of Things platform for further overall scheduling and early warning.

6. The pin shaft anti-retraction warning device for the tower crane standard section according to claim 1 is characterized in that: The control module (4) and the early warning module (5) are connected on a PCB board and connected to the detection chip (3) via a wire (7).

7. The pin shaft anti-retraction warning device for the tower crane standard section according to claim 6 is characterized in that: The position of the PCB board can be flexibly set.

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