CN-224226544-U - Tower crane lifting hook anti-collision top detection system based on photoelectric sensor

CN224226544UCN 224226544 UCN224226544 UCN 224226544UCN-224226544-U

Abstract

The utility model discloses a tower crane lifting hook anti-collision top detection system based on a photoelectric sensor, which structurally comprises a tower crane main body and a lifting hook, wherein an amplitude-variable trolley is arranged at the lower part of the tower crane main body, the lifting hook is fixedly connected with the amplitude-variable trolley, the system also comprises the photoelectric sensor and a reflecting plate mounting bracket, the photoelectric sensor is arranged at the lower part of the amplitude-variable trolley, the reflecting plate mounting bracket is fixedly arranged at the side part of the lifting hook, a signal reflecting plate is arranged at the top of the lifting hook, when the lifting hook moves upwards to an upper limit position, the photoelectric sensor detects a reflected signal, the signal is sent to a signal collector through a wireless bridge, the signal collector is transmitted to a PLC (programmable logic controller) control system through communication, and the PLC control system sends a signal for stopping ascending to the lifting hook, so that the lifting hook is prevented from collision. The utility model belongs to the field of tower cranes, and particularly relates to a tower crane lifting hook anti-collision top detection system based on a photoelectric sensor.

Inventors

LI JIAN
LI QUAN
ZHANG ZHI
HUANG JIANGMIN
ZHOU BING
XU SHIZHU
WEN CHAOHUI

Assignees

湖北江汉建筑工程机械有限公司

Dates

Publication Date: 20260512
Application Date: 20250520

Claims (6)

1. The tower crane lifting hook (5) anti-collision top detection system based on the photoelectric sensor (1) comprises a tower crane main body (6) and a lifting hook (5), wherein an amplitude-variable trolley (2) is arranged at the lower part of the tower crane main body (6), the lifting hook (5) is fixedly connected with the amplitude-variable trolley (2), and the system is characterized by further comprising the photoelectric sensor (1) and a reflecting plate mounting bracket (3), wherein the photoelectric sensor (1) is arranged at the lower part of the amplitude-variable trolley (2), the reflecting plate mounting bracket (3) is fixedly arranged at the side part of the lifting hook (5), and a signal reflecting plate (4) is arranged at the top of the lifting hook (5).
2. The tower crane lifting hook (5) anti-collision detection system based on the photoelectric sensor (1) is characterized in that the photoelectric sensor (1) is arranged right above the signal reflecting plate (4) and is opposite to the signal reflecting plate (4).
3. The tower crane lifting hook anti-collision top detection system based on the photoelectric sensor, which is characterized in that a wireless network transmission chip and a storage battery are arranged in the photoelectric sensor (1).
4. The tower crane lifting hook anti-collision top detection system based on the photoelectric sensor, which is characterized in that a signal collector and a controller are arranged in a tower crane main body (6), a wireless network transmission chip is arranged in the signal collector, and the signal collector is connected with the controller through an electric signal.
5. The tower crane lifting hook anti-collision top detection system based on the photoelectric sensor according to claim 4 is characterized in that the photoelectric sensor (1) is connected with a model collector in a wireless signal mode.
6. The tower crane lifting hook anti-collision top detection system based on the photoelectric sensor according to claim 5, wherein the controller is a PLC or a microprocessor.

Description

Tower crane lifting hook anti-collision top detection system based on photoelectric sensor Technical Field The utility model belongs to the field of tower cranes, and particularly relates to a tower crane lifting hook anti-collision top detection system based on a photoelectric sensor. Background As an important construction machine in the engineering field, the tower crane is used for breaking a steel wire rope after the lifting hook of the tower crane is stamped to cause the free falling body of the lifting hook to fall, and great property loss and casualties are often caused. At present, safety protection is mainly carried out by means of lifting mechanical limit and lifting encoder electronic limit. However, when the mechanical limit and the electronic limit are used for a long time, accumulated errors are often generated, and in the actual use process, the lifting and the saving can be shielded by the bypass button, so that the safety protection function of the lifting and saving device is disabled. Disclosure of utility model The utility model aims to solve the technical problem that accumulated errors exist in mechanical limit and electronic limit. The tower crane lifting hook anti-collision top detection system based on the photoelectric sensor comprises a tower crane main body and a lifting hook, wherein the lower part of the tower crane main body is provided with a luffing trolley, the lifting hook is fixedly connected with the luffing trolley, the tower crane lifting hook further comprises the photoelectric sensor and a reflecting plate mounting bracket, the photoelectric sensor is arranged at the lower part of the luffing trolley, the reflecting plate mounting bracket is fixedly arranged at the side part of the lifting hook, and the top of the lifting hook is provided with a signal reflecting plate. Further, the photoelectric sensor is arranged right above the signal reflecting plate and is arranged opposite to the signal reflecting plate. Further, a wireless network transmission chip and a storage battery are arranged in the photoelectric sensor. Further, a signal collector and a controller are arranged in the tower crane main body, a wireless network transmission chip is arranged in the signal collector, and the signal collector is connected with the controller in an electric signal mode. Further, the photoelectric sensor is connected with the model collector in a wireless signal mode. Further, the controller adopts a PLC controller or a microprocessor. The beneficial effects obtained by the utility model by adopting the structure are as follows: The tower crane lifting hook anti-collision top detection system based on the photoelectric sensor is provided, the signal reflecting plate is installed on the reflecting plate installation support through the installation of the reflecting plate installation support, the cooperation control is realized with the photoelectric sensor installed on the lower portion of the amplitude-variable trolley, the detection system belongs to the direct detection of the sensor, the repeatability is good, the shielding is impossible, the installation and the use are convenient, the system can be widely applied to tower cranes of various specifications, and old machines without the function can be upgraded and modified, so that the system has the function. Drawings FIG. 1 is a first partial schematic construction of the present utility model; FIG. 2 is a schematic view of a second partial structure of the present utility model; FIG. 3 is a schematic diagram of the overall structure of the present utility model; FIG. 4 is a flow chart of the operating system of the present utility model; Fig. 5 is a diagram of the operation system of the present utility model. Wherein, 1, photoelectric sensor, 2, amplitude changing trolley, 3, reflecting plate mounting bracket, 4, a signal reflecting plate, 5, a lifting hook, 6 and a tower crane main body. The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. Detailed Description The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model. As shown in fig. 1-5, the tower crane lifting hook anti-collision top detection system based on the photoelectric sensor provided by the utility model comprises a tower crane main b