KR950002115B1 - Equipment of roller with contacting side - Google Patents

Abstract

None.

Description

Surface contact roller device

1 is a side view of the surface contact roller apparatus according to the present invention.

FIG. 2 is a partial cutaway front view of FIG. 1. FIG.

3 is a partial cutaway front view of the roller assembly.

4 is a partial cutaway side view of FIG.

5 is a perspective view of a roll bearing, a metal bush and a protective ring.

* Explanation of symbols for main parts of the drawings

1: Base 11: Shoring

2: support 3: track,

4: roller assembly 5: bracket

6a, 6b: induction roller 41: roller

42: axis 43: roll bearing

46a, 46b: protection ring

The present invention relates to a roller apparatus that is used as a roller for pushing out heavy materials (bridge upper holes), such as concrete beams for beams, steel beams, and the like. In particular, Korean Patent Application No. 89-15815 (Publication No. 92-2961) ) Is a technically more advanced development.

A close examination of the prior art has found that there are several flaws as follows.

First, the roller chain that guides the track turning around the outside is frequently replaced.

In other words, the prior art has a high rolling friction since the roller-chain in charge of guiding the track rotates in orbit with the track while rotating. This resulted in premature wear of the roller-chain as well as a loud sound when pushing heavy loads. Thus, other components such as tracks are still intact and economically incurred as they are no longer usable, but most of all, maintenance costs, time lost, and wasted labor due to dismantled rollers and replacement with roller-chains. This is a bigger problem.

Secondly, the number of components and processing elements, weight and weight were inevitable compared to the utilization value, and it was very inconvenient to maintain or repair after shipment.

Fifth, when the track enters parallel to the bottom of the upper load and the roller tries to enter the upper straight line from the arc section, the cloud of the roller is disturbed by the track, which is applied to the chain.

Fourth, in the track guide roller-chain, since it was almost defenseless against the ingress of foreign matter such as dirt, dust, and dust into the roller shaft bearing of the chain link, various side effects caused by foreign matter infiltration were also generated.

Therefore, the first object of the present invention is to relieve the angle of entry when the track enters the working position in which the heavy load is placed in the rest state, thereby reducing the mechanical burden on the track and the induction roller located at the point.

It is another object of the present invention to provide a surface contact roller device that can achieve more substantial performances, such as simple structure, light weight, convenience of maintenance, cost down, reduced operation noise, and improved durability due to reduced friction. have.

In order to achieve the above object, the surface contact roller device provided in the present invention fixes a group of guide roller assemblies serving as guides of a track to exclude mobility, thereby eliminating their premature wear and at the same time reducing noise. An induction roller that redirects the track to the work area is installed close to the circumference of the guide roller assembly that stays in the work area, so that the track can be folded into the work area to protect the track and its induction roller together. . Along with this, it is also one of the features of the present invention that the group of roller assemblies disposed in the work area eliminates gaps between the shaft ends and the roll bearings so that foreign substances do not penetrate inadvertently.

Hereinafter, an embodiment will be described in detail for the purpose of improving understanding of the present invention.

1 and 2 are front views in which a part of the side surface of the surface contact roller device according to the present invention is cut away. In these figures, the upper and lower shafts 12 of the base 1 are provided with semi-arc shaped shaft grooves 12, and the shaft grooves 12 have shafts extending to both sides of the roller support 2. 21) is put on. The shaft 21 has a shape in which only the lower half of the center of the round bar is taken to match the shape of the shaft groove 12. Thus, the roller support 2 can be displaced about its axis 21, and this displacement can move well in response to the inclination of the bottom face of the heavy object when the center of gravity of the heavy object moves in the process of loading and pushing the heavy object. Rotation).

On the upper surface of the roller support 2, a plurality of roller assemblies 4 which support and guide the track 3 substantially in the work area are arranged at positions symmetrical with respect to a vertical line passing through the center of the shaft 21. To be placed. In FIG. 1, the minimum unit of 3 sets is an example. These roller assemblies 4 are homogeneous, the detailed structure of which is shown well in FIGS. 3 and 4. That is, in these figures, many roll bearings 43 are circumscribed on the shaft 42 of the roller 41, and the bearing housing 44 of the roll bearing 43 also serves as an outer racer.

In the shaft 42, there are annular grooves 42a and 42b cut out at a diameter smaller than the original shaft diameter on the boundary line and the shaft end of the roll portion. These annular grooves 42a and 42b are the paths through which the metal bushes 45 fitted to both shafts of the roll bearing 43 pass.

The metal bushing 45 is inserted into the shaft 43a of the roll bearing 43 to maintain the equilibrium when the roller 41 rotates, and also between the roller 41 and the roll bearing 43 and the bearing housing 44. In addition, the air gap C is provided outside the shaft end of the roll bearing 43 to increase the assemblability, while foreign matters such as dust and dirt penetrate into each gap even while the roller 41 rotates smoothly by the roller bearing 43. To prevent the rolling bearing 43 freely from rolling friction and rotation, under the protection of the protective rings 46a and 46b, which the metal bushes 45 of each roll bearing 43 are inscribed to prevent them. It is for.

Here, the free activity of the roll bearing 943 is, for example, when the load on the roller 41 is unbalanced, and even if it is difficult to discriminate with the naked eye due to vibration or the like, the minute displacement occurs. In this case, the load is biased toward the load, and the roller 41 is inclined to either side, so even if the roll bearing 43 is tilted or slipped toward the load, the rotation is performed as in normal operation. It is said to perform a static exercise without a hitch.

For this purpose, the gap C has a width of the protective rings 46a and 46b greater than the length of the shaft 43a of the roll bearing 43 and the width of the metal bush 45 so that the rollers 41 and the side plates 47 are closed. It is made by leaving some space in between.

Therefore, the roller assembly 4 as described above is concentrated in the work area of the track 3 so that even heavier weights can be quickly and safely moved without heavy force, and foreign matter can penetrate into the roll bearing 43. Since there is no structure, the rotational motion due to the interaction between the shaft 42 of the roller 41 and the roll bearing 43 is also smoothly reduced, as well as the operation noise.

Next, a description will be given of a track guide device which guides the track 3 when the track 3 enters the work area from the work area or the work area to the work area.

This induction device consists of a bearing plate 5 attached to the front and back of the support 2 and induction rollers 6a and 6b attached thereto.

The bearing plate 5 is symmetric in left and right at each position, and the induction roller 6a installed at the upper end is the contact surface of the track 3 portion passing over the roller 41 of the roller assembly 4 located at the front and rear. By setting the entry angle (or release angle: θ) with respect to the horizontal line (S) extended at, a smaller angle, it is possible to enter smoothly without excessively heavy load, especially when the track element suddenly enters the work area. The movement also occurs when the work area is released from the work area.

In this way, as the track guide fence is improved, the mechanical load is greatly reduced in the track turning motion of the track moving from the rest area to the work area when the heavy object is pushed out using the surface contact roller device, thereby protecting the track as well as the guide device. You can reap.

Reference numeral 42, not described above, is a screw shaft portion extending from the shaft 42 of the roller 41, and 48 is a nut fastened thereto.

Claims (1)

In the support (2) having a roller guide device on the support (11) of the base (1), and the track guide track (3) is installed in the roller guide device, the front and rear of the support (2) The bearing plate 5 is installed and the track guide rollers 6a and 6b are pivoted in place, and the upper guide roller 6a is the entry angle (or release angle) toward the working area of the track 3. ) Is installed at an acute angle downward from the horizontal plane, and also in the working area of the support (2) in the axial outer side of the roll bearing 43 at the place where the shaft 42 of the roller 41 starts and ends. A plurality of roller assemblies (4) fixed by arranging a plurality of roller assemblies (4) in which circumferentially arranged roll bearings (43) were fitted with protective rings (46a) and (46b) leaving (C) to protect against infiltration of foreign matter. One side contact roller device.