Sensor mounting device

Abstract

The utility model discloses a sensor mounting device, which is characterized in that a pulley beam is arranged on a trolley frame, a balance pulley mechanism is arranged on the side edge of the pulley beam, the balance pulley mechanism comprises a pulley seat and a single-piece pulley, a pulley shaft is arranged on the pulley seat, the pulley shaft and the pulley seat are axially positioned through a shaft end baffle above, and a bearing is sleeved in the middle of the pulley shaft. The single-piece pulley is sleeved on the bearing to rotate, the lower portions of the two ends of the pulley shaft are respectively provided with a bearing seat type weighing sensor, and the bearing seat type weighing sensors are fixedly connected to the pulley seat through bolts and gaskets. On the premise that the original structure of the travelling crane is not changed, a single-piece pulley is separated and placed on a table top of a trolley frame, a bearing seat type weighing sensor is installed below a pulley shaft of the single-piece pulley, the bearing seat type weighing sensor is directly pressed by stress when an object is lifted, the bearing seat type weighing sensor deforms, and the single-piece pulley and the bearing seat type weighing sensor are separated from each other. And corresponding analog quantity is output, so that the stress condition is monitored. The weighing device is convenient to install and high in weighing precision.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting equipment, and particularly relates to a sensor installation device. Background Technique

[0002] The crane safety monitoring system refers to a system that, during the working process of a crane, uses various sensors, monitoring devices, and software to continuously monitor the state and working environment of the crane to ensure the safe operation of the crane. With the continuous development of the industrial and construction industries, cranes are increasingly widely used in various engineering projects. Electronic scale sensors are widely used in the perception of crane hoisting weighing to feedback the real-time weight of the hoisted items. It is a device that converts a mass signal into a measurable electrical signal output, and is one of the most important sensors in the lifting safety protection system. If the electronic scale sensor cannot accurately monitor the weight of the crane hoisted object, the crane may experience heavy object dropping, tipping over, overloading, etc. during the working process, posing certain safety risks.

[0003] On some large-tonnage gantry cranes, to meet the accuracy requirements, conventional electronic scale sensors are installed on the fixed pulley group. However, affected by the upper and lower limits and left and right limits of the trolley, when the space must be compressed, double-row fixed pulleys are often used and installed inside the trolley frame. This installation method is restricted by the floating shaft in the upper space and the rope under the drum in the lower space. If a weighing sensor is installed on the fixed pulley shaft, it will cause sinking, and it is inconvenient to repair the trolley frame. Summary of the Invention

[0004] To solve the problem of difficult installation of conventional electronic scale sensors, the utility model provides a sensor installation device.

[0005] The purpose of the utility model is achieved in the following way: A sensor installation device, a pulley beam is arranged on the trolley frame, a balance pulley mechanism is arranged on the side of the pulley beam, the balance pulley mechanism includes a pulley seat and a single-piece pulley, a pulley shaft is arranged on the pulley seat, the pulley shaft and the pulley seat are axially positioned by an axial end baffle above, a bearing is sleeved in the middle of the pulley shaft, the single-piece pulley rotates on the bearing, and bearing seat type weighing sensors are respectively arranged below both ends of the pulley shaft, and the bearing seat type weighing sensors are fixedly connected to the pulley seat through bolts and washers.

[0006] A pulley cover is arranged above the single-piece pulley.

[0007] Without changing the original structure of the crane, the utility model separates out a single-piece pulley and places it on the trolley frame tabletop, and installs a bearing seat type weighing sensor below the pulley shaft of this single-piece pulley. When lifting an object, the force directly presses on the bearing seat type weighing sensor, and the bearing seat type weighing sensor deforms, outputting a corresponding analog quantity to monitor the force condition. The utility model is convenient to install and has high weighing accuracy. Description of the Drawings

[0008] Figure 1 is a schematic structural view of a crane trolley.

[0009] Figure 2 is a side view of the present utility model.

[0010] Figure 3 is a cross-sectional view of the present utility model. Detailed Embodiment

[0011] The present utility model will be further described below in conjunction with the drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and are not used to limit the scope of the present utility model. After reading the content of the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the present utility model.

[0012] As Figure 1 shown, a sensor mounting device is provided. A pulley beam 4 is arranged on a trolley frame 1, and a balance pulley mechanism 3 is arranged on the side of the pulley beam 4. As Figure 2 , Figure 3 shown, the balance pulley mechanism 3 includes a pulley seat 31 and a single-piece pulley 38. A pulley shaft 35 is arranged on the pulley seat 31. The pulley shaft 35 and the pulley seat 31 are axially positioned by an axial end baffle 32 above. A bearing 39 is sleeved in the middle of the pulley shaft 35. The single-piece pulley 38 rotates on the bearing. Two bearing seat type load cells 37 are respectively installed below both ends of the pulley shaft 35. The bearing seat type load cells 37 are fixedly connected to the pulley seat 31 through bolts 34, nuts and washers 36.

[0013] In addition, for safety and reliability, a pulley cover 33 is arranged above the single-piece pulley. The pulley cover 33 is connected to the pulley seat 31 through bolts, which can prevent sundries from falling and affecting the measurement accuracy.

[0014] In order to solve the problem of difficult installation of electronic scale sensors in the prior art, the single-piece pulley is separated and placed on the trolley frame tabletop. A bearing seat type load cell is installed below the pulley shaft of this single-piece pulley. When a heavy object is hoisted by a steel wire rope, the weight of the heavy object is converted into the tension of the steel wire rope. The tension of the steel wire rope acts on the single-piece pulley and is transmitted to the bearing seat type load cell below the pulley shaft. The sensor deforms and outputs a corresponding analog quantity to monitor the stress situation. Without changing the original structure of the crane, the weighing accuracy is guaranteed to be about 3‰, and it has the characteristics of high temperature resistance and corrosion prevention.

[0015] When the steel wire rope is stressed, it is transmitted to the bearing pedestal type weighing sensor. The bearing pedestal type weighing sensor is connected to the controller, and the controller feeds back the pressure signal of the bearing pedestal type weighing sensor to the driver's cab, realizing the weight monitoring of the lifted object. When a problem occurs, it emits an audible and visual alarm, facilitating the personnel in the driver's cab to timely analyze the operation state and diagnose faults, so as to provide effective maintenance and fault diagnosis, which helps to improve the reliability and working efficiency of the crane, reduce the fault shutdown time, and improve the working efficiency.

[0016] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the overall concept of the present invention, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present invention.

Claims

1. A sensor mounting device, characterized in that: A pulley beam (4) is arranged on the trolley frame (1), and a balance pulley mechanism (3) is arranged on the side of the pulley beam (4). The balance pulley mechanism (3) includes a pulley seat (31) and a single-piece pulley (38). A pulley shaft (35) is arranged on the pulley seat (31). The pulley shaft (35) and the pulley seat (31) are axially positioned by an axial end baffle (32) above. A bearing (39) is sleeved in the middle of the pulley shaft (35). The single-piece pulley (38) rotates on the bearing. A bearing seat type weighing sensor (37) is respectively installed below both ends of the pulley shaft (35). The bearing seat type weighing sensor (37) is fixedly connected to the pulley seat (31) through bolts (34) and washers (36).

2. The sensor mounting device according to claim 1, wherein: A pulley cover (33) is arranged above the single-piece pulley.

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