JPS5912444Y2 - A car with a split piece in which the peripheral surface that wears out is made up of split pieces. - Google Patents

Description

[Detailed description of the invention] This invention relates to a wheel with a split piece, such as a sheave or a gear, which has a peripheral surface that wears out and has divided pieces that divide this peripheral surface. It is related to the structure to be fixed to.

FIG. 1 shows a front view (partially sectional view) of a hoisting machine as an example in which a conventional sheave is used.

In the figure, 1 indicates the entire hoisting machine, 1a indicates the electric motor part,
2 is an electromagnetic brake that brakes the hoisting operation, 3 is a bearing stand, 4 is
5 is a shaft passing through the electric motor and the sheave, and 5 is a sheave, which is provided with a rope groove portion 5a in contact with the rope and a brake drum portion 5b.

Figure 2 shows a detailed sectional view of the rope groove section. The bottom of the rope groove 5a (
(not shown) is provided with an undercut portion 5C to increase friction with the rope.

5d shows a worn surface where the cable groove 5a is worn due to friction with the cable, and the undercut portion 5C has disappeared due to wear.

The hoist 1 drives a load such as a cage by friction between the rope groove 5a of the sheave 5 and the rope.

Also, when the vehicle is stopped, the cage and the like are held in place by this friction.

If this friction cannot be maintained sufficiently, slippage will occur between the rope and the sheave 5, making it impossible to safely drive and control the load such as the car.

As described above, since it is necessary for the sheave 5 of the hoisting machine 1 to maintain stable friction between the rope groove portion 5a and the rope, an undercut 5C is applied to increase the friction.

However, this undercut portion 5C disappears like a worn surface 5d due to friction caused by the rope, so the rope groove portion 5
It is necessary to carry out the correction process of a.

In particular, when the sheave 5 is used outdoors, the sheave groove portion 5a is subject to significant wear due to the influence of wind, rain, dust, etc., and therefore the undercut portion 5C must be frequently corrected.

For this modification, the sheave 5 was removed from the hoist 1 one by one, a new sheave was installed, and the removed sheave 5 was modified.

In this way, replacing the sheave 5 required a great deal of time and expense, reducing the operating rate.

In order to eliminate these drawbacks, a sheave shown in Fig. 3 has been conventionally used.

FIG. 3a is a side view of the main part of the sheave, and FIG. 3b is a sectional view taken along the line IIIb--IIIb of FIG. 3a.

In the figure, 50 is the car body, and the brake drum part 50b
have.

Reference numeral 51 denotes a plurality of divided pieces (divided into four in the figure) attached to the circumferential surface of the car body 50, and a rope groove portion 51 a is attached to this circumferential surface.
, an undercut portion 51C, and is fastened to the vehicle body 50 with radial tightening bolts 11 and axial tightening bolts 12.

Note that 13 is a spring washer. 51j is the dividing surface of the dividing piece 51, and the dimension S is the gap between the adjacent dividing surface 51j.

With this structure, even if the cable groove portion 51a wears out, only the split piece 51 needs to be replaced, and the replacement work can be completed in a shorter time than in the conventional example shown in FIG. 1, thus reducing costs.
Operation rate can be improved.

However, in this case, it is necessary to accurately attach the dividing piece 51 to the vehicle body 50, and in particular, it is necessary to make the gap size S between the dividing surfaces 51j substantially uniform.

If the gaps are non-uniform, parts with large gaps will wear out quickly and the dividing piece 51 will have to be replaced.

Further, the wear of the cable groove portion 51a of the divided piece 51 is often not uniform, and in this case, only one of the divided pieces 51 will be replaced, but at this time, the divided piece 51 to be replaced and the divided piece 51 adjacent to this divided piece 51 will not be replaced. Dividing surface 5 with dividing piece 51
In order to make the two gap dimensions S between 1j uniform, the attachment of the dividing piece 51 to the vehicle body 50 must be performed accurately.

However, in the example shown in Fig. 3, the divided pieces are fixed by bolts l-11,
12, it was difficult to fix it in an accurate position.

In this case, in actual work, while taking into consideration the gap size S, the ball} 11. After tightening 12, a taper pin was driven between the divided piece 51 and the car body 50 for positioning.

Since the taper pins were driven in by matching the actual parts, holes for the taper pins had to be drilled on site.

This idea was made in order to eliminate the drawbacks of the conventional ones as mentioned above.It has a fixing member insertion hole with an inclined surface provided on the side surface of the split piece, and a fixing member that is fixed to the car body opposite to this hole. By providing a car with a split piece, in which a member holding part is provided, and the fixing member is held by the fixing member holding part and presses the inclined surface of the fixing member insertion hole to fix the split piece to the car body, To provide a car with a split piece in which the split piece can be easily and accurately fixed to the car body at a position that reduces the deviation in the dimension of each gap between the split faces of the split piece.

An embodiment of this invention will be described below with reference to FIGS. 4 to 8.

Figure 4a shows the main parts of the side view of the sheave, and Figure 4b shows the main parts of the sheave.
4a is a sectional view taken along the line IVb-rvb, FIG. 5 is a sectional view taken along the line V-v of FIG. 4a, FIG. 6 is a side view of the divided piece, and FIG. -Vll line sectional view, FIG. 8 is a structural diagram of the fixing member, a is a front view, and b is a side view.

In the figure, 52 is the car body, and the brake drum part 52
b, interlocking parts 52 C and 52 d that clamp the side surfaces of the divided piece 53, through holes 52 f and 52 g provided in the interlocking parts 52C and 52d, respectively, screw hole 521, screw hole 5
2k.

The divided piece 53 includes a rope groove portion 53a and an undercut portion 53.
C, through holes provided corresponding to through holes 52f and 52g {
L53e, conical portions 53f and 53g having inclined surfaces coaxially with the through hole 53e, a notch 53 provided between the through hole 53e and the side that contacts the vehicle body 52;
h, a dividing surface 53j, a screw hole 53k, and a screw hole 531.

Next, reference numeral 6 denotes a bolt as a fixing member, and usually a reamer bolt is used to improve the dimensional accuracy of attaching the divided pieces 53.

This bolt 6 includes a rod-shaped portion 6C, a locking portion 6b, and a rod-shaped portion 6C.
It has a conical portion 6a having an inclined surface provided between the locking portion 6b and the locking portion 6b, a stopper groove 6d for preventing rotation of the bolt 6, and a threaded portion 6e.

A sleeve 7 has a hole 7b into which the rod-shaped portion 6C of the bolt 6 is inserted, and a conical portion 7a having an inclined surface, and is inserted into a through-hole 52f of the vehicle body 52.

8 is a spring washer, 9 is a nut, and 10 is a dowel pin attached to the through hole 52g of the vehicle body 52, which is inserted into the stopper groove 6d to prevent the bolt 6 from rotating.

11 is a radial tightening bolt of the divided piece 53, and the screw hole 5
3k and is screwed into the screw hole 52k.

Reference numeral 12 denotes an axial tightening bolt of the divided piece 53, which is inserted into the screw hole 52.
1 and screwed into the screw hole 531.

13 is a spring washer. Above bolt 6 to spring washer 13
up to form a fixed member.

Next, we will explain how this car works.

The conical portion 6a of the bolt 6 and the conical portion 7a of the sleeve 7,
By tightening the nut 9, the conical portions 53g, 53f of the divided piece 53 can be pressed and fixed to the vehicle body 52.

Since the conical portions 53g and 53f of the divided piece 53 can be accurately positioned and machined in a factory, etc., even when the divided piece 53 is replaced on-site, it can be installed at an accurate position.
Therefore, the time and cost for replacing the divided pieces 53 can be saved.

The notch 53h of the dividing piece 53 is a gap for attaching or removing the dividing piece 53, and the dividing piece 53 can be attached or removed in the radial direction by simply loosening the nut 9, and the bolt 6 can be pulled out from the through hole 53e. It doesn't have to be true.

If there is space to pull out the bolt 6, it is not necessary to provide this notch 53h.

In the above explanation, the conical portions 53f and 53g of the divided piece 53
However, the divided piece 53 may be fixed to the car body 52 by a fixing member that presses only one of the conical parts and the other by friction between the divided piece 53 and the car body 52.

Also, tightening bolt} 11. The fixing member 12 is not necessary when the load is light, and the fixing member consisting of the bolt 6, sleeve 7, spring washer 8, and nut 9 may be used alone.

As another embodiment of this invention, a through hole 52f in the vehicle body,
52g is a screw hole, and a conical part 6a is installed in each screw hole.
, 7a from both sides to connect the conical portions 53g and 53f of the divided piece 53.
Press with the tip of this screw and attach the split piece 53 to the car body 5.
Fixed at 2.

In this case, the through hole 53e is unnecessary.

Even in this case, the divided piece 53 can be fixed at an accurate position as in the previous embodiment.

In the above embodiment, the case of a hoisting machine has been described, but the present invention can also be applied to a vehicle other than a hoisting machine whose peripheral surface wears out, such as a pulley or a gear.

As described above, according to this invention, in a car with a split piece that is formed by dividing the circumferential surface part that wears into a plurality of pieces, and is shaped so as to surround the car body, the split piece is provided on the side surface of the split piece. a fixing member insertion hole having a sloped surface; a fixing member holding part provided on the vehicle body opposite to the fixing member insertion hole; a fixing member held by the fixing member holding part; Since the car is equipped with a split piece that presses the inclined surface and fixes the split piece to the car body, the split pieces are fixed so as to reduce the dimensional deviation of each gap between the split surfaces of the split piece. It can be fixed in a precise position on the car body.

[Brief explanation of drawings]

Figure 1 is a front view (partial sectional view) of a hoisting machine using a conventional sheave, Figure 2 is a detailed sectional view of the sheave groove portion of the sheave in Figure 1, Figure 3 a, l) are structural diagrams of the main parts of a conventional sheave with split pieces, a is a side view, b is a IIIbII. of a. FIG. Figures 4a and 4l) are structural diagrams of the main parts of a sheave with split pieces showing an embodiment of this invention, where a is a side view and b is a side view of IV.
-IVb line sectional view. 5 is a sectional view taken along the line ■-V in FIG. 4a, FIG. 6 is a side view of the divided piece in FIG. 4, FIG. 7 is a sectional view taken along the line VII-Vll in FIG. 6, and FIG. 8a, 1) is a structural view of the fixing member shown in FIG. 4, in which a is a front view and b is a side view. In the figure, 1 is a hoisting machine, 1a is a motor section, 2 is an electromagnetic brake, 3 is a bearing stand, 4 is a shaft, 5 is a sheave, 5a, 51
a, 53a are rope groove parts, 5b, 50b, 52b are brake drum parts, 5C, 53C are undercut parts,
5d is a worn surface, 51. 53 is a divided piece, 51j, 53j
is a dividing plane, 50. 52 is the car body, 52C, 52d are the mounting parts, 52 f, 52 g, 53 e are the through holes, 5
2k is a screw hole, 521.53k is a screw hole, 53f,
53g, 6a, 7a are conical parts, 53h is a notch part, 531 is a screw hole, 6 is a reamer bolt, 6b is a locking part, 6C is a rod-shaped part, 6d is a stopper groove, 6e is a threaded part, 7 is a sleeve , 7b is a hole, 8 is a spring washer, 9 is a nut, and 10 is a knock pin. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (5)

[Scope of utility model registration request] (1) In a car with a segment formed by dividing the circumferential surface part that wears into a plurality of pieces that wrap around the car body, inserting a fixing member having an inclined surface provided on the side surface of the split piece. a fixing member holding part provided on the vehicle body opposite to the fixing member insertion hole; the split piece is held by the fixing member holding part and presses the inclined surface of the fixing member insertion hole; A car with a split piece, characterized by comprising a fixing member fixed to the car body. (2) The split-piece wheel according to claim 1, wherein the split-piece wheel is a mesh wheel having a groove for a traction net on the curved surface of the split piece. (3) The fixing member insertion hole of the split piece is a hole with a conical inclined surface, the fixing member holding part of the vehicle body is a screw hole facing the fixing member insertion hole of the split piece, and the fixing member is at its tip. and a threaded rod having a circular thrust portion corresponding to the conical inclined surface of the fixing member insertion hole of the divided piece, and the divided piece is pressed and fixed by screwing the threaded rod into the screw hole. A split-single vehicle according to claim 1 or 2 of the utility model registration claim. (4) The fixing member insertion hole of the divided piece is a through hole penetrating both side surfaces of the divided piece, and a conical part having a conical inclined surface coaxial with the through hole on both side surfaces of the divided piece. The fixing member holding part of the vehicle body includes a clamping part that clamps both sides of the divided piece provided on the vehicle body, and a clamping part that has a penetrating part of the divided piece formed in the clamping part. The fixing member holding part is provided opposite to the hole and consists of two through holes having a larger diameter than the through hole, and the fixing member includes a rod-shaped part that passes through the through-hole of the divided piece, and a rod-shaped part of the rod-shaped part. A threaded portion having one end as a screw, a locking portion having the other end larger in diameter than the through hole of the divided piece and inserted into one of the through holes of the vehicle body, and the rod-shaped portion and the locking portion. A bolt having a conical portion having an inclined surface in contact with the inclined surface of the circular thrust portion of one of the divided pieces between them, a hole into which the rod-shaped portion of the bolt is inserted, and a through hole of the other of the vehicle body. A sleeve that is inserted and is a conical part whose tip end has an inclined surface in contact with the inclined surface of the other conical part of the divided piece, and is screwed into the threaded part of the bolt to form a conical part of both the bolt and the sleeve. Utility model registration claim 1, characterized in that the fixing member is a nut that fixes the divided piece to the vehicle body by pressing the sloped surfaces of both conical parts of the divided piece. Or a car with a split piece as described in paragraph 2. (5) The through hole of the divided piece has a notch wider than the diameter of the rod-shaped part of the bolt between the side where the divided piece contacts the car body, and when the nut is loosened, the bolt is removed. 5. The vehicle with a split piece according to claim 4, which is a utility model registered and is characterized in that the split piece can pass through the notch and is detachable from the vehicle body in the direction of the outer periphery of the split piece.