SK8800Y1 - Electromechanical device with sliding drop hammer for testing conveyor belts - Google Patents

Abstract

Electromechanical device with sliding drop hammer for testing conveyor belts consist of testing belt conveyor (1) containing tested conveyor belt (2) with guide bars (8) located on sides of the belt, which are fixed by their ends by means of upper housings (9) to the cross beam (3) and by means of lower housings (10) to the transverse reinforcement (6). The guide bars (8) are provided with guide sleeves (11) which are inserted into the carrier plate (12), which has lifting eyes (19) attached in the middle, through these the pull rod (16) of pneumatic cylinder (15) is inserted. The pull rod (16) simultaneously passes through the hook (22) on rope (24) belonging to the electric hoist (23), which is fixed to the crossbeam (3). Load bars (20) on which weights (21) are threaded are inserted into the carrier plate (12) and an electropneumatic valve (18), an acceleration sensor (17), a tup housing (13) and a tup (14) are also mounted on the support plate (12). The crossbeam (3) is connected to the vertical beams (4) which are connected to the horizontal beams (5) and these are connected to the transverse reinforcement (6). Bumpers (7) are rigidly attached to the transverse reinforcement (6) below the load bars (20).

Description

Technical field

The technical solution can be included in the field of physics, specifically in the field of testing machine parts.

Prior art

In the former Czechoslovakia, only one electronic device was used to measure resistance to cross-sections - the Pollini Wolpert paddle machine, which was designed by the German company Wolpert as a unique device. There is no literature with detailed technical parameters.

In Poland, for the purpose of such a measurement, a test rig was constructed, which consisted of a tower equipped with guides, along which a transport truck with a ram and a weight moved, this mechanical device was also made unique.

In Germany, in the past, a device for measuring the impact force was purposefully developed, which made it possible to measure small surface damage to the conveyor belt as well as its resistance to puncture. The conveyor belt was attached and placed on two support rollers, the position of which was unchangeable. The ram consisted of a measuring head and a cabinet. Lifting of the ram was provided by a lifting device, but such devices are currently no longer functional. This device was also made unique, but according to it, only a few such devices were made for measuring purposes. The disadvantage of these devices was the mechanical lifting and control of the ram.

The essence of the technical solution

The essence of the solution lies in the fact that it consists of an electromechanical device with a sliding ram for testing conveyor belts and containing a tested moving conveyor belt. At its sides there are guide rods, which are fixed at their ends by means of upper sleeves to the transverse beam and by means of lower sleeves to the transverse reinforcement. The guide rods have threaded guide sleeves which are inserted into a support plate which has hanging eyes in the middle, through which the rod of the pneumatic cylinder is inserted. At the same time, the drawbar passes through the rope hook of the electric hoist, which is attached to the cross member by means of the hoist hinge, nut and washer. At the same time, load bars are slid into the support plate, on which weights are threaded, and an electropneumatic valve, an acceleration sensor, a rammer housing and a rammer are also attached to the support plate. The transverse beam is connected to vertical beams, which are connected to horizontal beams. Bumpers are firmly attached to the transverse reinforcement under the load bars.

The device works on the principle of gravitational generation of the dynamic impact of the ram. The magnitude of its kinetic energy corresponds to the potential energy of the support plate assembly together with the selected set of weights. The support plate assembly together with the selected set of weights is connected to an electric hoist and a rope, the hook of which has a pulled rod. It is simultaneously threaded into a hanging support plate. The drawbar is connected to the pneumatic cylinder. When compressed air is supplied to it via an electropneumatic valve, the cylinder piston, and thus the drawbar, moves. The eyebolts and the hook are released, as a result of which the support plate assembly, together with the selected set of weights and the ram, begins to fall in a free fall to the belt conveyor under test. There, there is a collision (impact) between the ram and the tested conveyor belt, which is detected by the acceleration sensor. In the event that perforation occurs between the ram and the conveyor belt under test due to the impact, the movement of the support plate assembly together with the selected set of weights and ram shall stop by placing the load bars on the bumpers located on the transverse reinforcement. Subsequently, the lifting of the support plate together with the selected set of weights and the rammer is performed after inserting the drawbar into the suspension eyes and the hook, after discharging the compressed air from the pneumatic cylinder through the electropneumatic (two-position) valve. The plate reaches the required height together with the selected set of weights and the ram by activating the electric hoist. The proposed device is a system with electromechanical control and drive. The advantage of the described device is the use of a standardized electric hoist with parameters guaranteed by the authorized manufacturer and electropneumatic control of the rammer movement, the components of which are also with the parameters guaranteed by the authorized manufacturers.

Overview of figures in the drawings

The technical solution is explained in more detail with the help of the drawing, in fig. 1 shows the overall arrangement of the functional parts of the device.

S K 8800 Υ1

Examples of embodiments

In FIG. 1 shows an exemplary embodiment of the present device. It shows the overall arrangement of the functional parts of the proposed mechanism. The electromechanical device with a sliding ram for testing conveyor belts has guide rods 8 arranged parallel to the vertical beams 4. These are fixed at their ends by means of upper sleeves 9 to the transverse beam 3 and by means of lower sleeves 10 to the transverse service 6. The guide rods 8 have guide sleeves threaded 11, which are inserted into a support plate 12, which has in the middle fixed suspension eyes 19, through which the rod 16 of the pneumatic cylinder 15 is inserted. The rod 16 simultaneously passes through the hook 22 of the rope 24 of the electric hoist 23 which is fixed to the cross member 3 by The hoist 25 of the hoist, nuts 27 and washers 26. At the same time, load bars 20 are slid onto the support plate 12, on which weights 21 are threaded, and an electropneumatic valve 18, accelerator sensor 17, rammer housing 13 and rammer 14 are also attached to the support plate 12. The transverse beam 3 is connected to the vertical beams 4, which are connected to the horizontal beams 5. To the transverse service 6, load bars fixed to the load bars 20 7.

The device works on the principle of gravitational generation of the dynamic impact of the ram. The magnitude of its kinetic energy corresponds to the potential energy of the support plate assembly 12 together with the selected set of weights 21. The support plate assembly 12 together with the selected set of weights 21 is connected to the electric hoist 23 by a rope 24 whose hook 22 has a pull rod 16. This is simultaneously threaded. into the suspension eyes 19 of the support plate 12. The rod 16 is connected to the pneumatic cylinder 15. When compressed air is supplied to it via the electropneumatic valve 18, the piston of the cylinder 15 moves, and thus also the rods 16. The suspension eyes and hook 22 are released, as a result the assembly of the support plate 12 together with the selected set of weights 21 and the ram 14 begins to fall in a free fall to the tested belt conveyor 1. There there is a collision (impact) between the ram 14 and the tested conveyor belt 2, which senses the acceleration sensor 12. due to the impact between the ram 14 and the tested conveyor belt 2, its perforation occurs, the movement of the support plate assembly 12 is stopped together with the selected complete the weight 21 and the ram 14 by abutment of the load bar 20 on the bumpers 7 located on the transverse service 6. Subsequently lifting of the support plate 12 together with the selected set of weights 21 and ram 14 is performed after inserting the drawbar 16 into the suspension eyes 19 and hook 22, after releasing the compressed of air from the pneumatic cylinder 15 via an electropneumatic (two-position) valve 18. The required height is reached by the plate 12 together with the selected set of weights 21 and the ram 14 by activating the electric hoist 23. The proposed device is a system with electromechanical control and drive

Industrial applicability

The device according to the proposed solution can be used in research and testing laboratories of industry, mainly in mining and metallurgy. This also applies to all areas where belt conveyors are used to transport piece or bulk material.

S K 8800 Υ1

List of reference marks test belt conveyor tested conveyor belt transverse beam vertical beam horizontal beam transverse reinforcement bumper guide rod upper housing lower housing guide housing support plate rammer housing rammer pneumatic cylinder pneumatic cylinder rod accelerator sensor electro-pneumatic valve hoist weight rod hoist hinge washer nut

Claims (3)

CLAIMS FOR PROTECTION Electromechanical device with a sliding ram for testing conveyor belts, characterized in that guide rods (8) are arranged parallel to the vertical beams (4), which are fixed at their ends by means of upper bushes (9) to the transverse beam (3) and by means of lower sleeves (10) into the transverse reinforcement (6), the guide rods (8) having threaded guide sleeves (11) which are inserted into a support plate (12) which has hanging eyelets (19) fixed in the middle, through which the drawbar (16) of the pneumatic cylinder (15) is inserted, the drawbar (16) simultaneously passing through the hook (22) of the rope (24) of the electric hoist (23) which is fixed to the cross member (3) by means of the hoist hinge (25), nuts (27) and washers (26), wherein the load bars (20) are slid into the support plate (12), on which the weights (21) are threaded, and an electropneumatic valve (18) is also attached to the support plate (12), an acceleration sensor (17), a ram housing (13) and a ram (14). Electromechanical device with a sliding ram for testing conveyor belts according to claim 1, characterized in that the transverse beam (3) is connected to vertical beams (4) which are connected to the horizontal beams (5) and these are connected to the transverse service (6). Electromechanical device with a sliding ram for testing conveyor belts according to Claims 1 and 2, characterized in that a bumper (7) is firmly connected to the cross bars (20) under the load bars (20).