SU1476128A1 - Bench for vibration testing of pick hammers - Google Patents

Abstract

The invention relates to the mining industry, in particular, to stands for testing jackhammers and other percussion machines, and can be used in various industries. The goal is to increase productivity by eliminating manual operations for installing a hammer in the holder. The stand includes a base 1 with posts 2 connected in the upper part of the crossmember 3, on which the loading unit 4 with the handle holder is placed. On the base 1, a friction loader 5 is placed with a test rolling pin (IC) 6 with a collar sandwiched in it. On the traverse 3, a stop 24 is fixed, which is interoperable with the handle holder. The latter is made in the form of lower and upper holders placed in the housing (K) with elastic gaskets covering the handle. To accommodate the stem of the loading unit, rigidly connected to the upper yoke, K has an opening. The upper cage is spring-loaded relative to K and has bearing pins mounted in the grooves K perpendicular to the longitudinal axis of the hammer (M) 7. The lifting mechanism of the test M 7 activates in the form of a pneumatic cylinder 8 and coaxially mounted relative to each other and connected to each other (G) 10, 13. On the lower G 13 there is fixed a pusher 16 with the ability to interact with the collar of the IC 6 when lifting M 7. Upper G 10 is installed with the possibility of interacting with the support pins and with the drive 8. The measuring peak 15 of the test M 7 co is driven by the centering bushing 25 with the IC 6, and the handle M 7 is installed between the yokes. In the test M 7 serves compressed air and it begins to work, breaking the IC 6. 2 Il.

Description

one

The invention relates to the mining industry, in particular, to stands for testing jackhammers and other vibration impact machines, and can be used in various industries

The purpose of the invention is to increase productivity by eliminating manual operations for installing a hammer in the holder.

FIG. 1 shows the stand, a general view; in fig. 2 is a view A of FIG. one.

The stand contains a base 1, on which racks 2 are fixed. The uprights 2 in the upper part are connected by a cross beam 3 on which the loading unit 4 is installed. On the base 1 there is a friction loader 5 with a test pin 6 clamped in it with a shoulder.

The lifting mechanism of the test hammer 7 includes an actuator mounted on the base in the form of a pneumatic cylinder 8, the rod of which is fixed to the upper rod 10 by means of a bracket 9, moving in direction 11 and interacting with the spring holder of the hammer handle 7 by means of an upper pusher 12. mounted also on the upper rod 10.

The lower rod 13, moving with along the guide 11, thanks to the design

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The coupling 14 has a limited free run relative to the upper rod 10 in the range equal to the fit of the measuring peak 15 in the test hammer 7 ± .10 mm.

On the lower rod 13 is fixed the lower pusher 16 with the ability to interact with the shoulder of the test rolling pin 6 when raising the hammer 7.

The grip holder is made in the form of lower collar 18 and upper 19 placed in the housing 17 with elastic gaskets encompassing the grip of the hammer. The holder body 17 has grooves in the side walls, and an opening 20 in the upper wall, in which the stem 21 of the loading unit 4 is mounted, which is rigidly connected to the upper holder 19, which is spring-loaded relative to the body. The spring 22 is loosely mounted on the rod 21 and rests at one end on the upper yoke 19 and the other on the holder body. The upper yoke 19 has support pins 23 placed in the grooves of the body perpendicular to the longitudinal axis of the hammer, through which the holder is connected to the lifting mechanism, and the yoke 3 is provided with a stop 24 for engaging with the holder. The measurement peak is connected to the test rolling pin with the centering sleeve 25.

The stand works as follows.

Test roll 6 is unclamped in friction load 5. Compressed air is supplied to the lower cavity of pneumatic cylinder 8. Moving upward, the rod of the pneumatic cylinder 8 lifts the upper rod 10 by means of the bracket 9, and then, when selected for free running, by means of the coupling 14 and the lower rod 13.

The upper rod 10 through the upper pusher 12 acts on the pins 2, 3.

The pins 2, 3 and the upper yoke 19 with an elastic gasket mounted on the rod of the load body 21 move up together with the holder body 17 up to the stop 24, while the rod 21 with the yoke 19 compresses the spring 22, which moves the holder body 17 along the load rod 21. The upper holder 19 with the elastic gasket and the lower holder 18 with the elastic gasket disperse, forming the gap necessary for inserting the handle of the test hammer.

The bottom bar 13 with the lower pusher 16 raises the test rolling pin 6 with the collar.

The measuring peak 15 of the test hammer 7 is connected to the test rolling pin 6 with a collar by means of the centering sleeve 25, and the hammer handle 7 is installed between the lower yoke 18 with the gasket and the upper yoke 19.

Rolling pin 6 is clamped in frictional load 5.

In the upper cavity of the pneumatic cylinder

8 compressed air is supplied. All moving parts of the lifting mechanism are lowered to the lowest position, freeing the spring holder and rolling pin from their effect. The spring 22, unclenching, through the upper holder 19 and the lower holder 18 provides

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with

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fastening the hammer handle 7. Thus, a mechanized clamping of the test hammer in the holder is carried out.

The test hammer 7 is supplied with compressed air, the hammer 7 starts to work, punching the test rolling pin 6. When the hammer 7 is operated, the vibration characteristics are removed using a vibration sensor mounted on the handle of the hammer 7.

Claims (1)

Invention Formula A vibration test bench for hammers, including a base with racks connected in the upper part of a crosshead, on which is placed a loading unit with a stem and a handle holder, placed on the base of a friction load with a rolling pin, a lifting mechanism with a drive, characterized by that, in order to increase productivity by eliminating manual operations but installing a hammer in the holder, it is provided with a stop fixed on the cross member to interact with the holder, made in the form of The lower and upper sleeves with elastic gaskets covering the handle, the housing has grooves on the side walls and a hole for accommodating the stem of the loading unit rigidly connected to the upper housing, which is spring-loaded relative to the housing and has supporting pins, mounted in the slots of the body perpendicular to the longitudinal axis of the hammer, and the lifting mechanism is made in the form of coaxially mounted with the ability to move one relative to another and interconnected rods, with the lower rod connected to the drill ICOM rolling pin, and upper - with the bearing pins and the actuator. 21 20 Fig 2