JPH0910613A - Rubber liner - Google Patents

Abstract

PURPOSE: To use a rubber liner for the lining of a cylindrical surface, to easily correct the shape of the rubber liner by cutting off a part of the rubber liner by a knife, to perform the lining all over the cylindrical surface by adopting site working for a needed part, and to enlarge the effective thickness without a granular treating material going round to the rear after lining. CONSTITUTION: In a rubber liner, rail fitting grooves 12 are recessed on the rear of a liner body 11 consisting of wear resistant rubber over the total length thereof in the longitudinal or the lateral direction, and reinforcing rails 13 are buried in the rail fitting grooves 12 to form the rubber liner body 11. The rail fitting groove 12 is formed like a T-shape in cross section, and the reinforcing rail 13 is formed like a Q-shape in cross section. The reinforcing rail 13 is freely attachably and detachably inserted into the rail fitting groove 12, and plural bolt holes 13c are holed in a bottom plate of the reinforcing rail 13 at prescribed intervals. A rail body 13a having a U-shaped cross section of the reinforcing rail 13 houses heads 14a of bolts 13 so that they cannot be rotated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber liner used for crushing stones, gravel, ore and the like, a hopper, a chute, a truck carrier, or a rod mill or ball mill.

[0002]

2. Description of the Related Art A hopper for conveying crushed stone, gravel, ore,
As a rubber liner that is fixed to a chute or truck bed, it is formed into a rectangular plate shape, and at the four corners, bolt holes through which the shaft part of the bolt passes and counterbore holes that accommodate the head of the bolt are provided. Also known is one in which a bolt is inserted into a bolt hole formed in a constituent iron plate such as the above hopper and tightened and fixed. Further, a backing iron plate is vulcanized and adhered to the back surface of the rubber liner, bolt holes are formed in the rubber liner and the backing iron plate, and counterbore holes are formed in the rubber part, respectively, so as to be fixed to the constituent iron plate such as the hopper. It is known to have been made.

[0003]

The rubber liner made of the above-mentioned rubber alone can be easily shape-corrected by cutting a part of the rubber liner according to the shape of the component when it is attached to the component such as the hopper. Although it can be performed, since it is easily deformed, the granular processed material enters from the boundary with the adjacent rubber liner toward the back surface after being attached to the above-mentioned component member, so-called backing occurs and the rubber liner floats, Friction causes local wear on the back surface of the rubber liner to shorten its service life.Furthermore, when the rubber thickness of the fixing part through which the shaft part of the bolt passes is thin and the effective thickness above the bolt head is thick, the fixing There is a problem that the strength of the portion becomes low and the rubber liner easily falls off, and conversely, when the fixing portion is thickened to reduce the effective thickness, the life is shortened.

On the other hand, a rubber liner having a backing iron plate on the back surface is excellent in strength and does not allow granular processed material to enter the back surface, but it is impossible to cut a part of it with a knife to correct the dimensions after mounting. In addition, there is a problem that the backing iron plate needs to be curved in advance in order to attach it to a curved surface such as a cylindrical surface, which makes it impossible to perform on-site matching.

In order to solve these problems, a rail-mounting groove having an umbrella-shaped cross section is provided on the back surface of the rubber liner, the rail-mounting groove having a narrow width opening and a wide width groove recess continuing from the opening.
A tubular metal guide rail having a narrow groove communicating with the opening may be slidably fitted in the groove of the mounting groove, and the head of the bolt may be slidably inserted into the guide rail. It was proposed (see Japanese Utility Model Laid-Open No. 5-85448). However, in this case, the guide rail is formed in a rectangular tube shape by the upper plate, the lower plate, and the left and right side plates, and the left and right side plates have a height that can accommodate the head of the bolt, and Due to the presence of the rubber layer having the above-mentioned opening, the height from the lower surface of the rubber liner to the upper surface of the guide rail becomes significantly larger than the thickness of the conventional backing iron plate. There is a problem that the thickness up to the upper surface of the rubber, that is, the effective thickness of the rubber liner becomes small, and a bolt having a special head is required as a fixing bolt, resulting in a high cost.

The present invention can be used for lining not only flat surfaces but also cylindrical surfaces, and it is easy to cut off a part of the rubber liner with a knife to correct the shape, and to align the necessary parts of the lining on site. The entire surface can be lined by the above, and the granular processed material does not invade from the boundary with the adjacent liner after lining, and it is more effective than the one using the above cylindrical guide rail. Provided is a rubber liner which has a large thickness and can be fixed with a normal bolt.

[0007]

A first means is to claim 1.
As described in, a rubber liner in which a rail mounting groove is provided over the entire length in the vertical or horizontal direction on the back surface of the liner body made of wear-resistant rubber, and a reinforcing rail is embedded in the rail mounting groove. Rail mounting groove is formed in a T-shaped cross section, and the reinforcing rail is formed in a reverse Ω shape in cross section by a rail main body having a U-shaped cross section and a flange portion protruding outward from the upper left and right ends of the rail main body. The main body and the flange portion are detachably inserted into the leg portion and the head portion of the rail mounting groove having the T-shaped cross section, respectively, and a plurality of bolt holes are bored at predetermined intervals in the bottom plate of the rail body and inserted into the bolt holes. The head of the bolt is non-rotatably housed in the rail body.

The liner body is formed of wear resistant rubber into a rectangular plate shape or a rectangular bar shape. The rubber liner 10 shown in FIG. 1 has rail mounting grooves 12 provided on the back surface of a plate-shaped liner body 11 along a pair of long sides thereof.
Reinforcing rails 1 are respectively provided in the pair of rail mounting grooves 12.
3 is detachably inserted. The rail mounting groove 12 is formed in a T-shaped cross section, which includes a leg portion 12a and a width-direction head portion 12b connected to the upper ends of the leg portions 12a. On the other hand, the reinforcing rail 13 has a reverse Ω-shaped cross section, which includes a rail main body 13a having a U-shaped cross section and a flange portion 13b protruding outward from the upper and left ends of the rail main body 13a.

The reinforcing rail 13 is made of metal and FR.
It is formed of a hard plate made of P or the like. Examples of metals include iron, stainless steel, aluminum, and aluminum alloys, and examples of FRP include nylon 66, nylon 6,
An example is one in which a thermoplastic synthetic resin such as polyethylene terephthalate or a thermosetting resin such as diallyl phthalate or phenol resin is reinforced with glass fibers or other fibers, and these FRP reinforcing rails are advantageous for weight reduction. Then, the rail body 13a of the reinforcing rail 13
Is formed in a U shape by the bottom plate and the left and right side plates, and a plurality of bolt holes 13c are drilled in the bottom plate at predetermined intervals. Hexagon bolts 14 are inserted into the bolt holes 13c from above to the hexagonal shape. The head 14a is non-rotatably housed in the groove of the rail body 13a. The groove depth of the rail body 13a is preferably set to be substantially equal to the head height of the hexagon bolt 14. A square bolt may be used instead of the hexagon bolt 14.

The second means is for fixing the reinforcing rail 13 to the above structural member by welding, and as described in claim 2, a plurality of through holes are predetermined in the bottom plate of the rail body 13a. The liner body 1 is perforated at intervals of
An opening larger than the above-mentioned through hole is provided in 1 in a concentric manner with the above-mentioned through hole, and this opening is closed with a rubber plug, and the others are formed in the same manner as the first means. The through hole may be the same as the bolt hole 13c as long as it has a size that enables the welding operation when welding the hole edge to the structural member. Also,
The opening provided in the liner body 11 may be of a size that enables the above welding operation with the reinforcing rail 13 attached to the liner body 11, and is preferably a circular hole having a diameter of 30 to 50 mm.

In the above first means and second means,
When the width of the rectangular liner body 11 shown in FIG. 1 is wide and the spacing between the reinforcing rails 13 along the left and right long sides is wide, the third reinforcing rail 13 can be attached in the middle thereof. Also, when the processed material flows in a certain direction like the inclined surface of the hopper, the contact portions of the two liner bodies that are adjacent to each other in the direction of flow are shaved diagonally and are spliced together so that the upstream side is on top, The above reinforcing rails can be attached only to the back surface on the upstream side of each liner body (see FIG. 5). When the liner body is a narrow square bar, it is sufficient to attach one of the above-mentioned reinforcing rails 13 along the center line of the lower surface (see FIG. 6). When the reinforcing rail 13 is attached, it is preferable that the lower surface of the rail main body 13a is provided higher than the lower surface of the liner main body 11, and in this case, the step between the rail main body 13a and the lower surface of the liner main body 11 is a rail main body 13a. Forming an interference when fixing the to the structural member.

The flange portion 13b of the reinforcing rail 13 (see FIG. 3) is formed so as to be slanted so as to be lowered at the free end,
The head portion 12b of the rail mounting groove 12 into which the flange portion 13b is inserted is preferably formed in a mountain shape in cross section corresponding to the inclination of the flange portion 13b, whereby the rubber liner 10 is firmly fixed to the structural member. , The liner body 1 sandwiched under the flange portion 13b of the reinforcing rail 13
The rubber part 1 is prevented from coming off. In addition, a protrusion may be provided on the lower surface of the flange portion 13b in order to prevent the slip-out. In addition, a woven fabric or a knitted fabric may be attached to the entire lower surface of the liner body 11 or a portion in contact with the lower surface of the flange portion 13b or may be embedded in a rubber layer.

Further, a mark for indicating the wear limit of the liner body, for example, a small hole, may be provided at a predetermined depth from the upper surface of the liner body, or a small plastic piece different in color from the liner body may be embedded.

[0014]

The rubber liner 10 of the first means shown in FIG. 1 is attached to a structural member such as a hopper and chute as follows. That is, the bolt hole 13c of the reinforcing rail 13
After inserting the hexagon bolt 14 into the
Is inserted into the rail mounting groove 12 of the liner body 11, the rubber liner 10 including the liner body 11, the reinforcing rails 13 and the hexagonal bolts 14 is arranged on the surface of the structural member, and the bolts perforated on the surface of the structural member. The hexagon bolt 14 of the rubber liner 10 is inserted into the hole, and a nut is fastened to the tip of the hexagon bolt 14 protruding to the back surface of the structural member to cover the surface of the structural member.

When the rubber liner of the second means is used, the rubber plug that closes the opening of the liner body is removed, the reinforcing rail is attached to the liner body, and then the rubber liner is attached to the surface of the structural member. Arrange and insert a welding tool through the opening of the liner body to weld the edge of the through hole of the reinforcing rail to the surface of the structural member, and then fill the opening of the liner body with a rubber plug to surface the structural member. To cover. Therefore, in this case, the bolt hole of the structural member becomes unnecessary.

In the rubber liner 10 of the first means and the second means, the reinforcing rail 13 on the lower surface of the liner body 11 is fixed to the surface of the structural member by bolting or welding, and the flange portion 13b of the reinforcing rail 13 is lowered. Since the rubber layer on the side is brought into close contact with the surface of the above-mentioned structural member, the phenomenon that powder particles of the processed material such as crushed stone invade the back surface of the rubber liner 10, so-called backing, is reduced. In particular, by arranging the rubber liner 10 so that the reinforcing rails 13 are orthogonal to the flow direction of the processed material such as crushed stone, the above-mentioned backing is further reduced.

The rubber liner 10 is the reinforcing rail 1
By pulling out 3, the liner body 11 can be easily cut into an arbitrary shape. Therefore, by preparing several types of reinforcing rails 13 having different lengths in advance, the liner body 11 can be cut and fixed in a desired shape in the field according to the shape of the portion to be lined. When the surface of the structural member is curved, the rubber liner 10 can be easily attached by orienting the reinforcing rail 13 in the generatrix direction.

Since the reinforcing rail 13 has a height sufficient to accommodate the head 14a of the bolt 14 in the rail body 13a having a U-shaped cross section, the bolt head 14a.
The thickness of the rubber layer on the base can be made almost equal to that when a conventional reinforcing iron plate is used, and the effective thickness of the liner body 11 is increased and the life is extended as compared with the case where a cylindrical reinforcing rail is embedded. .

[0019]

EXAMPLE A rubber liner 10A shown in FIG. 2 has two rail mounting grooves 12 having a T-shaped cross section, which are formed in the lower surface of a liner body 11A made of wear-resistant rubber, as in FIG. A large number of rectangular recesses 15 between the rail mounting grooves 12
Are formed in one row (or a plurality of rows) in the length direction so that the depth thereof is substantially equal to the rail mounting groove 12 and the rail mounting groove 12 is reinforced with an inverted Ω cross section made of aluminum. The rail 13 is inserted in the same manner as in FIG. In this embodiment, the rubber layer thicknesses of the liner body 11A are substantially equal to each other above the rail mounting groove 12 and the concave portion 15, and the rectangular concave portion 15 is not provided.
Compared with the rubber liner 10, the effective thickness of the rubber layer becomes uniform, the weight of the rubber discarded at the time of replacement is reduced, and the cushioning property is increased. A plurality of bolt holes (not shown) are drilled in the reinforcing rail 13 as described above.

The rubber liner 10B shown in FIG. 3 has a rail mounting groove 12 having a T-shaped cross section in the liner body 11B.
The head portion 12b is formed in a bent shape with a mountain-shaped cross section, and the flange portion 13b of the reinforcing rail 13 is inclined so that the free end becomes lower corresponding to this bent shape. A step d is provided between the lower surface of the rail body 13a of the reinforcing rail 13 and the lower surface of the liner body 11B.
The lower surface of 3a floats 2 to 4 mm above the lower surface of the liner body 11B.

Therefore, as shown in FIG. 4, the rubber liner 10B is placed on the structural member 20, and the hexagon bolt 14 inserted through the bolt hole 13c of the reinforcing rail 13 is inserted into the bolt hole 20a of the structural member 20. When the washer 16 is fitted to the tip and the nut 17 is fastened, the flange portion 13
The rubber layer 11a on the lower side of b is compressed and the step d disappears, and the lower surface of the liner body 11 adheres strongly to the surface of the structural member 20 by that amount, and the backing is further less likely to occur. Moreover, since the flange portion 13b is inclined,
The lower rubber layer 11a does not escape.

A rubber liner 10C shown in FIG. 5 is formed into a parallelogram shape in which a pair of long sides of a liner main body 11C is diagonally shaved so that a cross section can be cut and spliced, and one long side of the pair of long sides ( The reinforcing rail 13 is attached to the lower surface of the liner main body 11C, whose inclined surface is formed only by the long side on the side forming an acute angle with the lower surface. This rubber liner 10C includes a liner body 11C on the surface of an inclined structural member 20 such as a hopper, and one of two liner main bodies 11C whose long sides are orthogonal to the inclination direction of the structural member 20 and which are adjacent in the inclination direction. One long side of the liner body 11C (side having the reinforcing rail 13)
The other long side (the side lacking the reinforcing rail 13) of the other liner main body 11C is arranged so as to overlap the scraping surface, and each liner main body 11C is arranged on one upstream side of the reinforcing rail 1C.
It is fixed to the structural member 20 at 3.

A rubber liner 10D shown in FIG. 6 has a rectangular rod-shaped liner body 11D in which a single rail mounting groove 12 is provided in the center of the lower surface, and a reinforcing rail 13 similar to the above is inserted into the rail mounting groove 12. Is. The rectangular bar-shaped rubber liner 10D has a flange portion 21a horizontally projected from the lower end of the side surface of the thin plate-shaped rubber liner 21 adjacent to the left and right.
The tip of the hexagon bolt 14 that is overlaid on the reinforcing rail 13 and is previously inserted into the reinforcing rail 13 is attached to the bolt hole 20a of the structural member 20.
The washer 16 is fitted to the tip and the nut 17 is fastened to fix the left and right two thin plate rubber liners 21 and the square bar rubber liner 10D at the same time.

In the reinforcing rail 13A shown in FIG. 7, two ridges 13d each having a triangular cross section are provided on the lower surfaces of the left and right flanges 13b so as to extend in parallel with the length direction, and the flanges 13b are formed.
The rubber layer 11a of the liner body 11B (see FIG. 3) that is in contact with the lower surface of the above is cut into the rubber layer 11a to prevent the rubber layer 11a from coming off. In addition, 13c is a bolt hole.

The liner body 11E shown in FIG. 8 is constructed by embedding two reinforcing cloths 18 made of canvas in the rubber layer so as to surround the head portion 12b of the rail mounting groove 12, and this rail mounting groove is embedded. 12 to the reinforcing rail 13
When the rubber layer 1 is inserted (see FIG. 3) and fixed to a structural member, the rubber layer 1 is formed by press-contacting the flange portion 13b of the reinforcing rail 13.
It is possible to prevent breakage of 1a. In addition, the reinforcing cloth 18
The number of overlapping layers can be appropriately increased or decreased.

Also, in this embodiment, the rail mounting groove 1
A plurality of holes 11b are provided in a row in the upper part of 2 upwardly and at arbitrary intervals, and are used as marks for judging the life when the liner body 11E is worn from above and the holes 11b are exposed. . The hole 11b preferably has a diameter of 5 to 10 mm and a depth of 5 to 15 mm, and is appropriately set according to the thickness of the liner body 11D. Further, instead of providing the hole 11b, a rod or plate made of a synthetic resin different in color from the liner body 11E is embedded in the lower half portion along the long side of the liner body 11E, as shown by a chain line 19, It can be used as a similar mark.

In the rubber liner 10E shown in FIG. 9, a plurality of through holes 13e are formed in the rail body 13a of the reinforcing rail 13 at predetermined intervals, while the liner body 11F made of wear resistant rubber has the above through holes 13e. A larger opening 12A is provided concentrically with the through hole 13e, and this rubber liner 10E is placed on the structural member 20.
The tool is inserted through the opening 12A above the through hole 13
The edge of e is welded to the surface of the structural member 20. Reference numeral 23 indicates a welded portion. When welding is completed,
A rubber plug (not shown) is filled in the opening 12A.

[0028]

According to the first aspect of the invention, the rail mounting groove is provided on the back surface of the liner body made of abrasion resistant rubber over the entire length in the vertical direction or the horizontal direction, and the rail mounting groove is provided with the reinforcing rail. Since it is detachably fitted, the liner body can be cut into a desired shape according to the shape of the lining part by removing the reinforcing rail from the liner body, which facilitates on-site matching and lining. When the location is a curved surface, the lining of the curved surface becomes easy by orienting the reinforcing rail in the generatrix direction. Further, the rail mounting groove is formed in a T-shaped cross section, and the reinforcing rail is composed of a rail main body having a U-shaped cross section corresponding to the rail mounting groove having the T-shaped cross section and a flange section projecting outward from the upper left and right ends of the rail main body. Since it is formed in the shape of Ω, by fastening this reinforcing rail to the structural member with a bolt, the rubber layer of the liner body with the flange portion of the reinforcing rail located below it is brought into close contact with the structural member. Therefore, the occurrence of the lining is reduced. The reinforcing rail is composed of a rail body having a U-shaped cross section and flange portions projecting outward from the upper and left ends of the rail body, and the head of the fixing bolt is housed in the rail body having the U-shaped cross section. The height of may be such that the head of the bolt is placed on the bottom plate of the rail main body, and the effective thickness as a rubber liner is the same as when the bolt is inserted into the conventional reinforcing plate.

In the invention described in claim 2, since the reinforcing rail of the invention described in claim 1 is fixed to the structural member by welding, the liner body has a desired shape as in the invention described in claim 1. Can be cut into pieces for on-site alignment, can be easily attached to curved surfaces, and has less backing. However, unlike the invention according to claim 1, since it is fixed by welding without using bolts, it is not necessary to make a bolt hole in a structural member such as a hopper, and the height of the reinforcing rail is lower than that of the bolt head. Therefore, the effective thickness of the liner body can be further increased.

According to the invention described in claim 3, in the invention described in claim 1 or 2, the lower surface of the rail main body is located higher than the lower surface of the liner main body, and the step difference forms the interference. , When the reinforcing rail is fixed to the structural member by bolts or welding, the rubber layer located under the flange portion of the reinforcing rail is largely compressed, and thus the lower surface of the liner body adheres strongly to the surface of the reinforcing member. The lining is further reduced.

According to a fourth aspect of the present invention, in the invention according to the third aspect, the flange portion of the reinforcing rail is formed so as to be slanted so as to be lowered at the free end, and is inserted into the flange portion. Since the head portion of the groove is formed in a chevron shape in cross section, the rubber layer of the liner body in contact with the lower surface of the flange portion does not come out.

According to a fifth aspect of the present invention, in the invention according to the fourth aspect, a mark for notifying the wear limit of the liner body is provided at a portion of a predetermined depth from the upper surface of the liner body. When a rubber liner is used, wear progresses from the upper surface, and when the wear limit is reached, the above mark is exposed and it becomes clear that the life has been reached. Therefore, it is possible to easily know when to replace the rubber liner.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a rubber liner.

FIG. 2 is a plan view with a rotation sectional view of a second embodiment.

FIG. 3 is a sectional view of an essential part of the third embodiment.

FIG. 4 is a sectional view of the third embodiment during mounting.

FIG. 5 is a sectional view of a fourth embodiment.

FIG. 6 is a sectional view of a fifth embodiment.

FIG. 7 is a cross-sectional view of a modified example of the reinforcing rail.

FIG. 8 is a cross-sectional view of a modified example of the liner body.

FIG. 9 is a sectional view of a sixth embodiment.

[Explanation of symbols]

10, 10A, 10B, 10C, 10D: 10E: Rubber liner 11, 11A, 11B, 11C, 11D, 11E: 11
F: Liner main body 11a: Rubber layer under the flange 11b: Hole 12: Rail mounting groove 12a: Leg 12b: Head 12A: Opening 13, 13A: Reinforcing rail 13a: Rail main body 13b: Flange 13c: Bolt hole 13d: Protrusion 13e: Through hole 14: Hexagon bolt 14a: Head 15: Square recess 16: Washer 17: Hexagon nut 18: Reinforcing cloth 19: Synthetic resin plate for mark 20: Structural member 20a: Bolt hole 23: Welded portion

Claims (5)

[Claims] 1. A rubber liner in which a rail mounting groove is provided over the entire length in the vertical or horizontal direction on the back surface of a liner body made of wear resistant rubber, and a reinforcing rail is embedded in the rail mounting groove. Rail mounting groove is formed in a T-shaped cross section, and the reinforcing rail is formed in a reverse Ω shape in cross section by a rail main body having a U-shaped cross section and a flange portion protruding outward from the upper left and right ends of the rail main body. The main body and the flange portion are detachably inserted into the leg portion and the head portion of the rail mounting groove having the T-shaped cross section, respectively, and a plurality of bolt holes are bored at predetermined intervals in the bottom plate of the rail body and inserted into the bolt holes. A rubber liner in which the head of the bolt is non-rotatably housed in the rail body. 2. A rubber liner in which a rail mounting groove is formed on the back surface of a liner body made of wear-resistant rubber over the entire length in the vertical or horizontal direction, and a reinforcing rail is embedded in the rail mounting groove. Rail mounting groove is formed in a T-shaped cross section, and the reinforcing rail is formed in a reverse Ω shape in cross section by a rail main body having a U-shaped cross section and a flange portion protruding outward from the upper left and right ends of the rail main body. The main body and the flange portion are detachably inserted into the leg portion and the head portion of the rail mounting groove having the T-shaped cross section, respectively, and a plurality of through holes are formed at a predetermined interval in the bottom plate of the rail main body to form the liner main body. A rubber liner characterized in that an opening larger than the through hole is provided concentrically with the through hole, and the opening is closed with a rubber plug. 3. The rubber liner according to claim 1, wherein the lower surface of the rail main body is located higher than the lower surface of the liner main body, and the stepped portion forms the interference. 4. The reinforcing rail according to claim 3, wherein the flange portion of the reinforcing rail is formed so as to be inclined at a lower end thereof, and the head portion of the rail mounting groove into which the flange portion is inserted is formed to have a chevron cross section. Rubber liner. 5. The rubber liner according to claim 4, wherein a mark indicating the wear limit of the liner body is provided at a portion of a predetermined depth from the upper surface of the liner body.