SU859823A1 - Weight placing mechanism for heavy duty scales - Google Patents

Description

(54) THE MECHANISM OF HYDRAULIC INSTALLATIONS OF BIG-LOADABLE WEIGHTS

one

The invention relates to the field of weighing equipment, namely, devices and components of precision heavy weights.

The known mechanism of weight-setting of weights, containing a set of weights, a system of levers, a rail with weights brackets and a gearbox, Ll However, the weight mechanism does not have the required accuracy and is difficult to control due to the presence of a complex gearbox.

Of the known devices, the closest in technical essence to the present invention is a device comprising a set of weights associated with pushers, a mechanism for moving the pushers and an actuator fz.

The mechanism has a lack of accuracy and reliability in operation due to the presence of complex kinematics of control levers with locking rollers and holes.

The purpose of the invention is to increase accuracy and reliability.

This goal is achieved by the fact that the mechanism for moving the pushers is made in the form of levers with grooves and electromagnetic stops, the width of the grooves being greater than the thickness of the electromagnetic stops, and the levers are located in the same horizontal plane and rigidly connected with an additional axis interacting through the roller and cam with the drive .

Fig. I shows the structure of the mechanism of hrenalgery; in fig. 2 section A-A in FIG. one.

15

The device contains a set of weights 1, provided with outer and inner conical landing surfaces 2 and 3 with annular central surfaces. grooves 4 and 5, conical landing

Claims (2)

20 sockets 6, rigidly mounted on the yoke 7, pushers 8 with tapered nozzles 1) and 9, levers 10, provided with grooves 11, interacting with horizontal 3 J rollers 8, and locking electromagnetic stops 13, springs 14 and electromagnets 15., The outer and inner conical seating surfaces 2 and 3 of the sets of weights I interact, respectively, with the conical nests of bis with the tips of 9 pushers 8, and the width (X of the grooves 11 is chosen to be thicker (their stops 13. The levers 10 are located in the same horizontal plane 16 through rigidly connected with an additional lever 17, interacting through the roller 18 and the cam 19 with an electromechanical type actuator 20. On the yoke 7 there are stops 21, compensator 22, flag 23, indicator 24, sensitivity adjustment nuts 25 and static balancing 26, support prism 27 with cushion 28 and end prism 29 with th 30, hinged linking arm 7 with support arm 31, equipped with prism 32 with cushion 33 and suspension 34 with cup 35 for measurable trumpet 36 n limiting supports Noah (string) 37. In addition, The amplifier contains 38 with a pre-39 and exact 40 readout scoreboard and three electrical controls 41 with locking electromagnetic stops 13, microswitches 42 for stopping the drive 20. The platforms 43 on the rocker arm 7 serve to adjust the tapered landing slots 6, according to the length of its working arm 2 . The work of the mechanism of girnealing is as follows. Measured load 36, mounted on cup 35, causes imbalance in. the support arm 31 and then through the ro 30 to the yoke 7, deflected by an angle D f. The null indicator 24 supplies an electrical signal and a charger to the amplifier 38, from where the counterbalancing current Jc is supplied (to the compensator 22 and the corresponding signal S-, to the pre-counting board 39. The operator, using the electric control device 41, turns on the electromagnets 15 according to the indications a preliminary countdown board 39, as a result of which the 3 stops 13 move to the left and come out of the contacts with the pushers 8. When the actuator 20 is turned on, the additional lever 17 rises up and the lever 10 down, resulting in those of the pushers 8, under which the locking lugs 13 are removed, lower down, overlaying the weights I on the conical sockets 6 of the yoke 7. With a further lowering of the levers 10, the latter pass their grooves I} through the electromagnetic stops 13 that are not removed by the electromagnet 15, do not hit them. 1, the electromagnets 15 of which are not included are in the upper positions on the conical tips 9 of the pushers 8. The pushers 8, the electromagnets of which are included, freely fall down and exit their conical tips 9 from the contact with the internal conical fittings 3 weights on the surface 1. After the corresponding weights J have been applied, the null indicator 24 is turned on, reacting to residual unbalance (7 D) and input the electric signal Ugy to the amplifier 38, which supplies the balancing TOKJ to the compensator 22 which returns the rocker 7 to the original position when. On the scoreboard, an exact 40 readings from the electrical control device 4 and from the amplifier, a total signal Sj and SQ is given, corresponding to the total mass n of the load being examined 36) where K is the proportionality coefficient. For ease of reference, scoreboards 39 and 40 are graded directly in mass units. The use of the present invention will improve the accuracy and reliability of the mechanism of the heavy load weighing mechanism. Claims The mechanism of a heavy-duty heavy-duty balance, containing a set of weights associated with the pushers, a mechanism for moving the pushers and a drive, characterized in that, in order: to increase accuracy and reliability. more complete in the form of levers with grooves and electromagnetic stops, with the width of the grooves greater than the thickness of the electromagnetic stops, and the levers are located in the same horizontal plane and rigidly connected by an axis with an additional lever that interacts through the roller and cam with the drive. taken into account in the examination. t. USSR author's certificate 226192, cl. G 01 G 1/29, 01/30/1967 2. USSR author's certificate 239602, cl. G 01 G 1/38, 07/02/1966 (prototype). 000,000 ,, 1 I t. I t У р 11 III 1Г-Н J "/