SU859824A1 - Device for measuring instantaneous weight of articles - Google Patents

Description

(54) DEVICE FOR DETERMINING TORQUE WEIGHT

PRODUCTS.

The invention relates to a technique for measuring the coordinates of the center of gravity based on the static moments of products such as turbine blades.

A device for measuring j static moments of products is known, which contains a sensing element with a lock for the article under investigation, a support, a base and an OI reading unit.

However, the device does not have the required measurement accuracy due to the presence of re-installations and turns of the product in the lock, which violate the relative position of the product relative to the sensitive element.

Of the known devices, the closest in technical essence to the present invention is a device comprising a main rocker arm with a clamping device for the product, 20 mounted on a support and a reading unit IjZ.

The device has insufficient accuracy, measurement range and speed, since it requires the presence of a reference blade (article) with pre-calculated dimensions and coordinates, relative to which the rocker arm is adjusted.

The purpose of the invention is to increase the accuracy

The goal is achieved by the fact that the device is equipped with an additional arm with an electromagnetic compensator, the additional arm being connected to the main arm by a prismatic support, and a bar with V-shaped sockets for weights mounted on one arm of levers inserted into the device is attached to the arm. , on the other shoulders of which there are fixed rollers interacting with the cams connected via the angle position sensors and the decoder to the reading device.

Claims (1)

The drawing shows the device. 3 The device contains the main tank I with a lock 2 for the product under study 3, nuts for adjusting the sensitivity 4 and balancing 5 and an end prism 6 mounted on the support prism 7 and the pillow 8. The main rocker arm 1 is connected with the aid of 9 with the pillows 10 and 11 through a prism 12 with an additional bar 1 slum 13 equipped with an electromagnetic compensator 14, a damper 15, an imbalance sensor flag 16, a supporting prism 18 and a cushion 19, and stoppers 20 and 21. There is a rod 22 with jacks 23 V-shaped for weights 24 superimposed The gray mechanism consisting of levers 25, rollers 26, cams 27, shafts 28, knobs 29, and angular position electrodes 30, from one pinch decoder 31 on signal 5, read unit 32 on first input 33, to the second input 34 of which the output signal is supplied S with an amplifier 35 that receives an input signal Ugy, proportional to the unbalance W of the additional rocker arm 13, and supplies the amplified signal 5 to the compensator 14. On the rocker arm 1 there is a scale 36 on which lock 2 is set to the required size C. The device works as follows. The lock 2 for fastening the measured products 3 is set to the required size C on a scale of 36 and is balanced by the controller 5. The weights 24 are removed from the sockets 23 and the rocker system (main I and additional 13) is in equilibrium. When a measured item 3 is installed in lock 2 with a torque scale PL, where P is the blade mass, L is the distance from the support prism 7 of the main rocker arm 1 to the center of gravity of the product, the automatic balancing system with compensator I4 has an overload, as can be seen m, the readout block 32 at the second input 34. When the compensator 14 is overloaded, weights 24 are placed in the sockets 2 and 9, creating a balancing moment using the weights. —A, where Ef,, is the total mass of the imposed H weights; A - shoulder t gi. The value M with the help of electric sensors 30 of the angular position and the decoder 31 is fixed at the input 33 of the readout block 32, the weights 24 with the help of the handles 29 are superimposed until the overload disappears. electromagnetic compensator 14 and the value of the moment weight P-U is read from the scoreboard of the reading unit 32, where K is the proportionality coefficient. The presence of an additional rocker with an electromagnetic compensator, connecting the additional rocker with the main significantly increases the accuracy, measurement range and speed, since the need for a reference blade and adjustment operations for adjustment are completely eliminated. The invention The device for determining the moment weight of products, containing the main arm with a clamp 1M device for the product, mounted on a support, and a reading unit, characterized in that, in order to increase accuracy, the radio is equipped with an additional beam with an electromagnetic compensator, and an additional beam connected to the main yoke is pulled through prismatic supports, and a rod with sockets U is shaped for weights, mounted on one arm of levers inserted into the device, on the other shoulders of which there are rollers fixed, interacting with cams connected through angular position sensors and a decoder with a reading device, Information sources taken into account in examination 1, USSR Author's Certificate 364850, cl, G 01 m 1/12, 1970. 2 , USSR author's certificate 302619, cl. G 01 G 1/36, 22,12.69 (prototype),