阅读说明：本技术 侧压式重量传感器 (Side pressure type weight sensor ) 是由 罗少轩 乔爱民 汤庆国 于 2019-07-02 设计创作，主要内容包括：本发明公开了一种侧压式重量传感器,属于重量传感器领域,包括传感器弹性体、电阻式应变计、压块和紧固螺栓。所述传感器弹性体通过压块和紧固螺栓固定在钢丝绳上,当钢丝绳拉吊重物时会绷紧,钢丝绳的侧面会对所述传感器弹性体产生压力,引起电阻式应变计组成的等臂电桥的输出电压发生变化,由于此电压变化与钢丝绳受到的拉力大小成线性关系,因此就可得到重量载荷的实时重量值。该传感器的结构简单、体积小、安装方便,不需要截断钢丝绳,直接用螺丝锁紧在钢丝绳的侧面即可,适合用于起重机、河道闸门、建筑物升降机和电梯等采用钢丝绳牵引重量载荷的设备。(The invention discloses a side pressure type weight sensor, which belongs to the field of weight sensors and comprises a sensor elastomer, a resistance type strain gauge, a pressing block and a fastening bolt. The sensor elastomer is fixed on the steel wire rope through the pressing block and the fastening bolt, when the steel wire rope is used for hanging a heavy object, the steel wire rope can be tightened, the side face of the steel wire rope can generate pressure on the sensor elastomer, output voltage of an equal-arm bridge formed by the resistance type strain gauges is changed, and the voltage change and the tensile force of the steel wire rope are in a linear relation, so that a real-time weight value of the weight load can be obtained. The sensor has the advantages of simple structure, small volume and convenient installation, does not need to cut off the steel wire rope, is directly locked on the side surface of the steel wire rope by using screws, and is suitable for equipment which adopts the steel wire rope to pull weight loads, such as cranes, river gates, building elevators, elevators and the like.)

1. A side pressure type weight sensor comprises a sensor elastic body (1), a resistance type strain gauge (2), a locking nut (3), a U-shaped bolt (4) and a pressing block (5), wherein the sensor elastic body (1) is installed on the side surface of a steel wire rope (7), the pressing block (5) presses the steel wire rope (7), the pressing block (5) is locked through the U-shaped bolt (4) and the locking nut (3), and the steel wire rope (7) is bent at an angle after being locked, so that after the steel wire rope (7) is stressed and tightened, pressure is generated on the sensor elastic body (1) on the side surface, the output voltage of an equal-arm bridge formed by the resistance type strain gauges (2) adhered on the sensor elastic body (1) is changed, the voltage change is in a linear relation with the tensile force applied to the steel wire rope, namely, the voltage change is in a linear relation with the weight of a weight load, the voltage signal is processed to obtain a real-time weight value of the weight load, and the cable (6) is a 4-core cable and is used for supplying power to the sensor and transmitting signals.

Technical Field

The invention belongs to the field of weight sensors, and particularly relates to a side pressure type weight sensor.

Background

In industrial production and daily life, some loads with larger weight need to be measured, such as heavy objects lifted by a crane, lifting of a river gate, lifting of an elevator car and the like, and the real-time and accurate measurement of the loads is helpful for guaranteeing the operation safety of equipment and reducing the probability of accidents. However, since the position of the weight load is constantly moved during the operation of the equipment, the common weight sensor is difficult to install and measure, and if the weight sensor is not used, the equipment may be overloaded, thereby causing potential safety hazards.

At present, to great weight load measurement, generally mainly measure the pulling force on the wire rope that draws hanging load, but direct measurement wire rope's pulling force need cut wire rope, installs tension sensor additional between two sections wire rope, and not only the installation is inconvenient like this, also influences the bulk strength of equipment moreover, consequently need provide a neotype gate promotion weight detection sensor and solve above-mentioned problem urgently.

Disclosure of Invention

The invention aims to provide a side pressure type weight sensor, which does not need to cut off a steel wire rope for pulling and hanging load, but directly adds a sensor on the side surface of the steel wire rope, detects the pressure of the side surface of the steel wire rope on the sensor when the steel wire rope pulls and hangs heavy objects and is tightened, and then converts the pressure into the tensile force born on the steel wire rope and the weight of the load.

In order to achieve the purpose, the invention adopts the following technical scheme: a side pressure type weight sensor comprises a sensor elastic body, a resistance type strain gauge, a pressing block and a fastening bolt. The sensor elastic body is fixed on the steel wire rope through the pressing block and the fastening bolt, when the steel wire rope is used for hanging a heavy object, the steel wire rope can be tightened, the side face of the steel wire rope can generate pressure on the sensor elastic body, the resistance type strain gauge adhered to the sensor elastic body is deformed, the output voltage of the equal-arm bridge formed by the resistance type strain gauges is changed, the voltage change and the tensile force applied to the steel wire rope are in a linear relation, namely the voltage change and the weight of the weight load are in a linear relation, and the voltage signal is processed, so that the real-time weight value of the weight load can be obtained.

The invention has the beneficial effects that: the sensor has simple structure, small volume and convenient installation, and can be directly locked on the side surface of the steel wire rope by a screw without cutting the steel wire rope. The weight load monitoring system can be used for equipment such as cranes, river gates, building elevators, elevators and the like which adopt the steel wire ropes to pull weight loads, can be used for real-time weight detection, can be accessed into a safety monitoring system, and can remind operators and carry out safety warning when the weight loads are suddenly and violently changed.

Drawings

FIG. 1 is a schematic diagram of a sensor configuration;

fig. 2 is a top view of the sensor.

Detailed Description

The invention is further described with reference to the accompanying figures 1-2:

a side pressure type weight sensor is shown in a schematic structure figure 1, and comprises a sensor elastic body 1, a resistance type strain gauge 2, a locking nut 3, a U-shaped bolt 4 and a pressing block 5, wherein the sensor elastic body 1 is arranged on the side surface of a steel wire rope 7, the pressing block 5 presses the steel wire rope 7 and locks the pressing block 5 through the U-shaped bolt 4 and the locking nut 3, and the steel wire rope 7 is bent at an angle after being locked, so that when the steel wire rope 7 is stressed and tightened, pressure is generated on the sensor elastic body 1 on the side surface, the output voltage of an equal-arm bridge formed by the resistance type strain gauge 2 adhered on the sensor elastic body 1 is changed, the voltage change is in linear relation with the tensile force applied to the steel wire rope, namely in linear relation with the weight of a weight load, and a voltage signal is processed to obtain a real-time weight value of the weight load, the cable 6 is a 4-core cable for powering the sensor and transmitting signals.

The top view of the sensor is shown in fig. 2, and it can be seen that the steel cable 7 is locked on the side of the sensor elastic body 1 by the pressing block 5 and the U-bolt 4, and when the steel cable 7 is tightened, pressure is generated on the sensor elastic body 1.

In conclusion, the invention can provide the side pressure type weight sensor which is simple in structure, small in size and convenient to install, and the steel wire rope is not required to be cut off and is directly locked on the side surface of the steel wire rope by the screw. The weight load monitoring system can be used for equipment such as cranes, river gates, building elevators, elevators and the like which adopt the steel wire ropes to pull weight loads, can be used for real-time weight detection, can be accessed into a safety monitoring system, and can remind operators and carry out safety warning when the weight loads are suddenly and violently changed.