Trash crane traction pulley falling detection device
By introducing the connection between the travel switch and the PLC safety module in the garbage crane, the problem of cable damage caused by the pulley falling was solved, timely warning and power supply cut-off were achieved, ensuring the safe and efficient operation of the equipment.
Patent Information
- Application Number
- CN202422712211.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-07
AI Technical Summary
When the traction pulley of the existing garbage crane falls, the control and power cables are easily damaged, the maintenance is complicated and time-consuming, and there is a lack of an effective early warning mechanism.
A travel switch is introduced between the traction pulley and the traction column, and is electrically connected to the PLC safety module through a connecting rope to achieve early warning and power supply cut-off when the pulley falls, preventing the accident from escalating.
It achieves timely warning of pulley falling, avoids cable damage and complicated repairs, and ensures the safe and stable operation of mechanical equipment.
Smart Images
Figure CN223328912U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of garbage cranes, in particular to a traction pulley drop detection device for garbage cranes. Background Art
[0002] In existing waste pretreatment processes, dry waste is collected from a waste storage facility by a dry waste truck and then fed into a boiler for incineration, generating high-temperature, high-pressure steam that powers a turbine generator. Restaurant and kitchen waste is collected by a wet waste truck and fed into a wet waste treatment system, where biogas slurry is extracted for oil or used to generate biogas for power generation.
[0003] The transfer of various types of waste is typically carried out by crane. However, in practice, the traction pulley of the tow cable sometimes falls off the crane track. When the traction pulley falls, the control and power cables can become entangled with the crane's wheels or other objects. Without proper protection, the crane continues to move, damaging the cables or even rendering them useless. Repairs are complex and time-consuming.
[0004] Therefore, it is necessary to design a garbage crane traction pulley drop detection device, which can give an early warning of the possible falling traction pulley by introducing a travel switch. The control system can give a timely warning and switch the driving power supply, thereby preventing the accident from expanding and avoiding unnecessary losses. Summary of the Invention
[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a garbage crane traction pulley drop detection device. By introducing a travel switch, an early warning is given to the traction pulley that may fall. The control system issues a timely warning and switches the driving power supply, thereby preventing the accident from expanding and avoiding unnecessary losses.
[0006] In order to achieve the above-mentioned purpose, the utility model provides a garbage crane trolley traction pulley drop detection device, an I-beam is provided on the top of the trolley body, a traction pulley and a traction column are provided below the I-beam, the traction column is provided in a rectangular frame of the traction pulley, a travel switch is provided inside the traction column, the travel switch is connected to the traction pulley through a connecting rope, and the travel switch is electrically connected to the PLC safety module.
[0007] The connecting rope is a stainless steel rope.
[0008] Compared with the existing technology, the utility model adds a travel switch between the traction pulley and the traction column. Through the normally open and normally closed point method, when the traction pulley falls off during the process of crane lifting and moving garbage, the utility model can promptly notify the crane to shut down, avoiding further losses, and providing a guarantee for the safety and stability of mechanical equipment during the garbage lifting process. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 The device of the utility model is shown as follows Figure 1 .
[0010] Figure 2 The device of the utility model is shown as follows Figure 2 .
[0011] I-beam 1, travel switch 2, traction column 3, connecting rope 4, traction pulley 5, crane body 6, PLC safety module 7. DETAILED DESCRIPTION
[0012] The present invention will now be further described with reference to the accompanying drawings.
[0013] See also Figures 1-2 The utility model provides a garbage crane traction pulley drop detection device. An I-beam 1 is provided on the top of the trolley body 6, and a traction pulley 5 and a traction column 3 are provided below the I-beam 1. The traction column 3 is provided in a rectangular frame of the traction pulley 5. A limit switch 2 is provided inside the traction column 3. The limit switch 2 is connected to the traction pulley 5 through a connecting rope 4, and the limit switch 2 is electrically connected to the PLC safety module 7.
[0014] The connecting rope 4 is a stainless steel rope.
[0015] The working principle of this utility model is as follows:
[0016] The utility model has a simple structure and is easy to use. A travel switch 2 is added between the traction pulley 5 and the traction column 3. The travel switch 2 has a normally open point and a normally closed point. The travel switch 2 is fixed to the traction column 3 and connected to the traction pulley 5 through a stainless steel rope 4.
[0017] The normally open / normally closed signal of the travel switch 2 is connected to the PLC safety module 7 of the driving crane. The two signals must be input into the system at the same time, otherwise an alarm will be output and the power supply of the driving crane will be cut off.
[0018] The traction column 3 passes through the rectangular frame on the traction sheave 5, driving the traction sheave 5. If the traction sheave 5 falls off the traction column 3 due to a fault, the traction sheave 5 drives the stainless steel connecting rope 4 to operate, and the stainless steel connecting rope 4 drives the limit switch 2 to operate, causing the normally open point to become closed (the potential changes from low to high), and the normally closed point to become open (the potential changes from high to low). At this time, the driving PLC safety module 7 detects the signal action and cuts off the power supply, stopping the driving operation.
[0019] The above are only preferred embodiments of the present invention and are intended to help understand the method and core concept of this application. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.
[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0021] The utility model comprehensively solves the problem in the prior art that the control and power cables are damaged when the traction pulley falls during driving, which in turn causes a complicated maintenance process and affects the driving efficiency. By introducing a travel switch, an early warning is given to the traction pulley that may fall, and the control system issues an early warning and switches the driving power supply in time, thereby preventing the accident from escalating and avoiding unnecessary losses.
Claims
1. A garbage crane traction sheave drop detection device, characterized in that: An I-beam (1) is provided on the top of the traveling crane body (6), a traction pulley (5) and a traction column (3) are provided below the I-beam (1), the traction column (3) is provided in a rectangular frame of the traction pulley (5), a travel switch (2) is provided inside the traction column (3), the travel switch (2) is connected to the traction pulley (5) through a connecting rope (4), and the travel switch (2) is electrically connected to a PLC safety module (7).
2. The garbage crane traction sheave drop detection device according to claim 1, characterized in that: The connecting rope (4) is a stainless steel rope.