JPH10325105A - Connector for steel planking for road - Google Patents

Abstract

PROBLEM TO BE SOLVED: To firmly and easily connect steel plankings together and to solve the problem of loosening of a bout when an external impact is applied by fitting a ring-shaped step correcting member which is inclined outwards and downwards over the outer periphery of an upper fastener for a road steel planking plate connector. SOLUTION: A step correcting member 15 made of an elastic member inclined outward and downward is fitted over the horizontal opposite surface of an upper fastener 1 formed into a circular shape. A positioning projection formed on the back of the step correcting member 15 is fitted into a groove between steel plankings to be connected together, and the step correcting member 15 is mounted in a predetermined position on the upper fastener 1 to prevent movement. Steel plankings 5, 5', are sandwiched between the upper fastener 1 and a lower fastener 4, and after the iron plates 5, 5' are fastened together by threading a bolt 12 into through holes 3, 3', the lower fastener 4 is buried in the ground. Since the steel plankings are firmly and easily connected together and the step between the upper fastener 1 and the lower fastener 4 is corrected by the inclined surface of the step correcting member 15, stumbling of humans and loosening of the bolt 12 that may occur when a truck or the like makes shock-causing contact therewith can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road iron plate connector for connecting and fixing an iron plate laid on a road.

[0002]

2. Description of the Related Art Conventionally, in civil engineering and construction work sites, a temporary road is formed by laying iron sheets in order to make vehicles easy to pass. Conventionally, the iron sheet is laid on a road by welding the iron sheets. However, the method using welding requires time and effort for welding, and the time and economic burden required for peeling off welding is extremely large.Because it is not possible to correct the steps on the road when laying steel plates,
There was a drawback that the iron backing could not be pressed down and easily peeled off.

[0003] In order to solve such a drawback, a road laying iron plate connecting device is used in which an upper fixing device and a lower fixing device sandwich and connect a road laying iron plate.

[0004]

The above-mentioned conventional laying iron plate connector has a simple structure in which the laying iron plate is simply grasped by two upper and lower steel plates, or the lower end of the upper fixing member has a sharp tip. Since the projections are provided and the upper fixture is hit with a hammer from the upper surface, the projections are sunk into the iron plate, and the iron plates are connected to each other. Therefore, there is a problem in that the mounting is extremely troublesome and time-consuming.

In order to solve such a problem, the present applicant has formed a recess in the center of the upper fixture, and formed a through-hole in the recess in communication with the through-hole of the lower fixture. A high-strength bolt screwed to the upper fixture is screwed into the through hole, and the roadbed iron plate is tightened with the upper fixture and the lower fixture, and the upper fixture and the lower fixture are Developed a laying iron plate connecting tool in which an iron plate gripping convex portion was formed on the iron plate holding portion, and applied for a patent earlier.

The laying iron plate connecting device has an advantage that the laying iron plates can be easily connected to each other and can be firmly connected and fixed. However, a step is formed from the surface of the iron plate by the thickness of the upper fixing device. That people can easily trip over,
When a truck or the like passes through the upper fixing tool and comes into contact with the step, there is a problem that the bolt is loosened and comes off.

According to the first aspect of the present invention, iron sheets can be firmly and easily connected to each other, and at the same time, a person trips over, or a truck or the like comes into contact with an impact and a bolt comes off. It is an object of the present invention to provide a roadbed iron plate connector that solves the above problem.

According to a third aspect of the present invention, in addition to the object of the first aspect, a step difference correcting member can be easily attached to a predetermined position of the upper fixing tool. It is an object of the present invention to provide a roadbed iron plate connector in which a step correcting member is hardly detached.

A fifth object of the present invention is to provide, in addition to the object of the third aspect of the present invention, a road iron plate connector capable of firmly connecting the iron sheet. And

According to a seventh aspect of the present invention, in addition to the object of the fifth aspect of the present invention, a guide between the upper fixing member and the lower fixing member is prevented by positioning and guiding the iron sheet. It is an object of the present invention to provide a roadbed iron plate connector that can be easily connected.

According to a ninth aspect of the present invention, in addition to the object of the seventh aspect, when the iron plate gripping projection is worn or chipped, it is easily replaced. It is an object of the present invention to provide a roadbed iron plate connector that can be used.

[0012] Further, the invention according to claim 10 provides, in addition to the object of the invention according to claim 9, a road sheet iron plate connector capable of connecting and fixing an iron sheet plate very firmly. Aim.

[0013]

According to the first aspect of the present invention, a concave portion is formed at the center of an upper fixing member, and the concave portion communicates with a through hole of the lower fixing member. A threaded through-hole is formed, a bolt screwed into the through-hole of the upper fixture is screwed into the through-hole of the lower fixture, and a road iron plate is fixed with the upper fixture and the lower fixture. In the roadbed iron plate connecting tool which is connected and fastened, a ring-shaped step correcting member inclined downward toward the outside is fitted on the outer periphery of the upper fixing tool.

According to a third aspect of the present invention, there is provided a positioning safety portion fitted on a back surface of the ring-shaped safety component according to the first aspect, between the iron sheet facing the connecting portion, and a slip-off preventing portion. The projection is formed.

According to a fifth aspect of the present invention, an iron plate gripping convex portion is formed on an iron plate holding portion between the upper fixture and the lower fixture according to the first aspect.

According to a seventh aspect of the present invention, there is provided the lower fixture according to the first aspect, wherein a convex portion for positioning and guiding the iron plate is formed with the through hole interposed therebetween, and the upper fixture is provided with the convex portion. It is characterized in that a concave portion is formed to fit into the convex portion for guiding the iron sheet.

According to a ninth aspect of the present invention, the iron plate gripping convex portion according to the fifth aspect is formed at a tip end of a threaded rod screwed into the through hole. According to a tenth aspect of the present invention, the iron plate gripping convex portion according to the ninth aspect is formed as a ring-shaped convex strip.

[0018]

Next, an embodiment of the present invention will be described. A circular recess 2 is formed in the center of the upper fixture 1, a through hole 3 is formed in the recess 2, and the through hole 3 is formed.
Are connected to a through hole 3 ′ formed in the center of the lower fixture 4 to form a bolt screw hole.

In FIG. 1, a left-right facing surface of the upper fixture 1 is formed in an arc shape, and a step correcting member 15 is fitted on the arc portion. As shown in FIG. 2 and FIG. 3, the step difference correcting member 15 is formed to have a slope that is lowered outward.

The step correcting member 15 is preferably formed of an elastic member such as rubber or plastic. As shown in FIG. 3, positioning projections 16 are formed on the back surface of the step correcting member 15.

The positioning projection 16 is fitted in a groove 17 between the iron sheets to be connected, so that the step correcting member 15 can be attached to a predetermined position of the upper fixing tool, and the step correcting member 15 is displaced. It is positioned so that it does not move. Also, on the inside of the positioning projection 16,
Since the fitting projections (projections for preventing removal) 18 are provided,
When the step correcting member 15 is fitted to the upper fixture 1, the projection 18 is fitted, so that it is possible to prevent the upper fixing tool 1 from being pulled upward.

When the step correcting member 15 is fitted to the upper fixture 1, the projection 18 is bent because the step correcting member 15 is formed of an elastic member, and as shown in FIG. Then, it returns to the original state, and is fitted and locked to the lower surface of the upper fixture 1.

The inner peripheral surfaces of the through holes 3 and 3 'are threaded, and the high-strength bolts 12 having the heads 6 are screwed together so that the iron plates 5, 5' to be connected are clamped and tightened with a desired force. Has become.

The upper fixture 1 and the lower fixture 4 are formed with screw holes 7, 7 'facing each other with the through holes 3, 3' therebetween.
Screw rods 8, 8 'are screwed into the screw holes 7, 7'. At the tips of the screw rods 8 and 8 ', ring-shaped ridges 9 and 9'
Is formed, and the ring-shaped ridges 9, 9 'are used to form the iron plate 5,
5 'is gripped and fixed.

As shown in FIGS. 1 and 3, the lower fixture 4
Has a convex portion 1 having a substantially trapezoidal cross section across the through hole 3 ′.
0, 10 'are formed, and recesses 11, 11' are formed on the lower surface of the upper fixture 1 so as to be fitted to the convex portions 10, 10 'of the mountain shape. The convex portions 10, 10 'of the chevron are iron plates 5, 5'.
And guides the tightening of the upper fixture 1 and the lower fixture 4. That is, FIG.
As shown in the figure, the iron plates 5, 5 '
In addition to being able to be clamped at the position where it abuts on 0 ', it is possible to prevent deviation between the upper fixture 1 and the lower fixture 4.

By forming the mountain-shaped projections 10 and 10 'as described above, an operator can lay the steel plate without directly touching it with a machine when laying the iron plate, thereby preventing the occurrence of personal injury. .

The convex portions for holding and fixing the iron plates 5 and 5 ′ are formed by providing a screw hole 7 and a screw rod 8 in the upper fixing device 1 and simply forming a ridge (or a convex portion) facing the lower fixing device 4. As described above, by screwing the screw rods 8 and 8 'as in the above embodiment, when the ridge (or the ridge) is worn or chipped, it can be easily replaced. In the present invention, since the high strength bolts 12 are used to firmly tighten and fix the iron plate gripping projections 9, 9 ', they may be particularly worn or chipped. Is particularly effective.

In the above embodiment, the convex portions for holding and fixing the iron plates 5, 5 'are formed in the ring-shaped convex lines 9, 9'. This need not be the case, but by forming in this way, the iron plates 5, 5 'can be firmly gripped and fixed, and are less likely to be worn or chipped. The lower fixture 4 is buried in the ground 13, as shown in FIG.

The upper fixture 1 and the lower fixture 4 of the present invention
Can be formed from an appropriate material, but is preferably formed from metal by hot stamping for strength reasons. In the above embodiment, the high-strength bolt 12 is used. This may be a normal bolt, but if the high-strength bolt 12 is used, even if the upper fixing tool 1 and the lower fixing tool 4 are firmly tightened, they are tightened and fixed at a desired strength without breaking the screw thread. can do.

According to the connecting device of the present invention, since the step between the upper fixing device and the iron plate is corrected to the inclined surface, it is possible to prevent a person from stumbling or a truck or the like from hitting by impact. Can be.

[0031]

According to the first aspect of the present invention, iron sheets can be firmly and easily connected to each other, and at the same time, a person trips or a truck or the like comes into contact with impact. Problems such as removal of bolts can be avoided.

According to a third aspect of the present invention, in addition to the effects of the first aspect of the present invention, a step correcting member can be easily attached to a predetermined position of the upper fixing tool. The step correcting member can be made hard to come off.

According to the fifth aspect of the present invention, in addition to the effect of the third aspect of the present invention, the iron sheet can be firmly connected.

According to a seventh aspect of the present invention, in addition to the effect of the fifth aspect of the present invention, in addition to guiding the positioning of the iron sheet, it is possible to prevent a displacement between the upper fixture and the lower fixture. , Can be easily connected.

According to a ninth aspect of the present invention, in addition to the effect of the seventh aspect of the invention, when the iron plate gripping projection is worn or chipped, it can be easily replaced. can do.

Further, in the invention according to claim 10, in addition to the effect of the invention according to claim 9, the iron sheet can be connected and fixed very firmly.

[0037]

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Upper fixing tool 2 Depression formed in upper fixing tool 3 Through hole formed in upper fixing tool 3 'Through hole formed in lower fixing tool 4 Lower fixing tool 5, 5' Iron plate 8, 8 'Screw 9, 9 'ring-shaped ridge (convex portion for gripping iron plate) 10, 10' convex portion (convex portion for positioning and guiding an iron plate) 12 high-strength bolt 15 step correcting member 16 positioning protrusion 17 connecting iron plate Groove between 18 Projection to prevent slipping out (projection for fitting)

Claims (10)

[Claims] 1. A recess is formed in the center of an upper fixture, a through hole communicating with a through hole of a lower fixture is formed in the recess, and a through hole of the lower fixture is formed in a through hole of the lower fixture. The roadbed iron plate connector is formed by screwing the bolts that are screwed together and connecting and tightening the roadbed iron plate with the upper fixing device and the lower fixing device. A roadbed iron plate connector, wherein a step correcting member inclined downward toward the bottom is fitted. 2. The connecting tool according to claim 1, wherein a positioning projection is formed on a back surface of the step correcting member so as to fit between the connecting iron sheet and the iron sheet. 3. The step correcting member is formed of an elastic member.
The connector according to claim 1, wherein a protrusion for locking to be engaged with a lower surface of the upper fixing tool is continuously provided inside the positioning protrusion of the step correcting member. 4. The connecting tool according to claim 1, wherein the bolt is a high-strength bolt. 5. The roadbed iron plate connecting device according to claim 1, wherein a convex portion for holding an iron plate is formed in an iron plate holding portion between the upper fixing device and the lower fixing device. 6. The lower fixture with the through hole interposed therebetween.
The connecting tool according to claim 1, wherein a convex portion for positioning and guiding the iron plate is formed. 7. The connecting tool according to claim 6, wherein a concave portion is formed in said upper fixing device so as to fit into a convex portion for guiding said iron plate. 8. The connector according to claim 5, wherein the iron plate gripping projections of the iron plate holding portion are formed to face each other with the through hole interposed therebetween. 9. A threaded through hole is formed in the upper fixture and the lower fixture, a screw is screwed into the through hole, and the iron plate gripping projection is formed at the tip of the screw. The connecting tool according to claim 8. 10. The connecting tool according to claim 9, wherein the iron plate gripping projection is formed as a ring-shaped projection.