JPH0246485Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a jig for holding a road expansion joint in a compressed or expanded state by a predetermined amount when installing the road expansion joint. .

[Conventional technology]

The performance of road expansion joints is defined by the amount of compression and expansion in the longitudinal direction of the road. It must be held in an extended position when installed.

Conventionally, as road expansion joint installation jigs, as published in Publication of Utility Model Publication No. 50-30111,
One end of a pair of L-shaped brackets with hanging rings are connected via a turnbuckle, and the upper left-hand male thread of a vertical screw rod with a hexagonal flange in the middle is inserted into the female screw hole provided at the other end of each L-shaped bracket with hanging rings. A jig is known in which the lower right-hand threaded portion of the vertical threaded rod is threaded into a female threaded tube embedded and fixed in a member of the road telescopic attachment portion.

[The problem that the idea attempts to solve]

In the case of the conventional road expansion joint installation jig,
It cannot be used to attach a road expansion joint that has female threaded holes on both sides in the width direction, and has the disadvantage that the structure is complicated and the manufacturing cost is high.

The object of this invention is to provide a road expansion joint installation jig that can solve the above-mentioned problems.

[Means to solve the problem]

In order to achieve the above object, the road expansion joint installation jig of this invention has a left-handed threaded part 1 on one side, a right-handed threaded part 2 on the other side, and a rotary tool engaging part. 3, the left-hand threaded portion 1 and the right-hand threaded portion 2 of the horizontal double-threaded rod 4 include
The upper end of the holding member 5 and the upper end of the holding member 6 are screwed together, and a road telescopic hand support bolt 7 parallel to the double screw threaded rod 4 is attached to the lower end of the holding member 5 and the lower end of the holding member 6, respectively. is inserted.

[Example] Next, this invention will be explained in detail using illustrated examples.

1 to 3 show a road expansion joint installation jig according to an embodiment of this invention,
For engaging a rotating tool such as a spanner in the center of a horizontal double screw threaded rod 4 having a left-handed threaded portion 1 on one longitudinal side and a right-handed threaded portion 2 on the other longitudinal side. A rotary tool engaging part 3 consisting of a hexagonal part is provided, and the upper end of the holding member 5 is screwed into the left-hand threaded part 1, and the upper end of the holding member 6 is screwed into the right-hand threaded part 2. Furthermore, a through hole 8 for bolt insertion is provided at the lower end of the holding member 5 and the lower end of the holding member 6 on a straight line parallel to the axis of the double screw threaded rod 4, and the through hole 8 is provided with a road expansion joint. A support bolt 7 is inserted and inserted so as to be rotatable and removable.

4 to 6 show an example of a road expansion joint and a state in which a jig according to an embodiment of the present invention is set in the road expansion joint. , a steel band-shaped mounting plate 10 extending in the longitudinal direction of the joint body is embedded and fixed, and a large number of female screw holes are provided in the band-shaped mounting plate 10 at intervals in the longitudinal direction of the band-shaped mounting member,
A horizontal comb-shaped steel support plate 12 is fixed by welding to a vertical steel support plate 11 extending in the longitudinal direction of the joint body to form a support frame member 13, and further, on the outer surface of the support plate 11, A large number of wing reinforcing bars 14 arranged at intervals in the longitudinal direction of the support plate are fixed by welding and placed on the support plate 12 of a pair of support frame members 13 arranged opposite to the joint body 9, and The support plate 11 is inserted into the female screw hole in the part of the belt-shaped mounting plate 10 excluding the location where the jig is planned to be installed.
A countersunk head bolt 15 inserted through is screwed together, and the belt-shaped mounting plate 10 of the joint main body 9 is fixed to the support plate 11 by the countersunk head bolt 15, and the joint main body 9 provided with the belt-shaped mounting plate 10 and the wing A road expansion joint 16 is constituted by a support frame member 13 provided with reinforcing bars 14 and countersunk head bolts 15 that connect them.

A large number of jigs 17 configured as described above are arranged at intervals in the longitudinal direction of the road expansion joint 16, and the holding members 5 and 6 are engaged with the side surface of the support plate 11, Further, a bolt 7 inserted through the holding member 5 and the holding member 6
is inserted through the support plate 11 and screwed into the female screw hole of the belt-shaped mounting plate 10, and the bolt 7 connects the holding member 5 and the holding member 6 to the road expansion joint 16.
It is fixed on both sides in the width direction.

Next, by a rotary tool such as a spanner engaged with the rotary tool engaging portion 3, the double screw threaded rod 4 is rotated in the direction of increasing the distance between the holding members or the direction of decreasing the distance between the holding members.
After the width of the road expansion joint 16 is adjusted to a predetermined value, as shown in FIG. Support plate 1
The wing reinforcing bars 14 fixed to the road body 1 are fixed by welding to the anchor reinforcing bars 19 protruding from the upper surface of the end portion of the road body 18.

Next, after the bolts 7 are unscrewed and the holding members 5 and 6 are uncoupled from the support plate 11, the double-threaded threaded rod 4 is slightly rotated in the direction of increasing the gap between the holding members, and then the jig is 17 is road expansion joint 16
After the bolts 7 have been unscrewed, the countersunk head bolts 15 inserted from the outside of the support plate 11 are screwed into the female threaded holes of the band-shaped mounting plate 10 at the parts where the bolts 7 have been unscrewed. Ru.

Next, concrete or other hardenable material is placed on the upper end of the road body 18 up to the same level as the paved surface, and the hardenable material makes the supporting frame member 1
3 is firmly fixed to the road body 18.

When implementing this invention, a rotary tool engaging portion having a diameter smaller than that of the double screw screw rod 4 may be integrally provided at the end of the double screw screw rod 4. The jig of this invention can also be used to attach road expansion joints of any structure other than the road expansion joints shown in FIGS. 4 to 6.

[Effect of idea]

This idea is structured as described above, so
This produces the effects described below.

The holding members 5 and 6 are fixed to both sides of the road expansion joint 16 in the width direction simply by the bolts 7 fitted into the lower ends of the holding members 5 and 6, and the holding members 5 and 6 are fixed to the rotary tool engaging portion 3. The width of the road expansion joint 16, which has female threaded holes on both sides in the width direction, can be easily and finely compressed and adjusted by simply performing the simple operation of rotating the double-threaded screw rod 4 using the engaged rotating tool. Alternatively, the expansion joint can be adjusted and held, making it easy to install a road expansion joint that has internal threaded holes on both sides in the width direction while accurately maintaining the width at a predetermined value.
Furthermore, the jig of this invention has a simple structure, small size, and light weight.

[Brief explanation of the drawing]

Figures 1 to 3 show a road expansion joint installation jig according to an embodiment of this invention, in which Figure 1 is a side view, Figure 2 is a front view, and Figure 3 is a vertical side view. It is. Figure 4 is a plan view showing the state in which the jig is set on the road expansion joint, and Figure 5 is A--A in Figure 4.
Figure 6 is an enlarged cross-sectional view along line A, Figure 6 is an enlarged cross-sectional view taken along line B-B in Figure 4, and Figure 7 shows the state in which the wing reinforcing bars in the road expansion joint held by a jig are fixed to the anchor reinforcing bars of the road body. FIG. In the figure, 1 is a left-hand thread, 2 is a right-hand thread, and 3 is a right-hand thread.
is a rotating tool engaging part, 4 is a double screw screw rod, 5 and 6
is a holding member, 7 is a road expansion joint mounting bolt, 8 is a
9 is the through hole for bolt insertion, 9 is the rubber joint body, 10 is
13 is a steel band-shaped mounting plate, 13 is a holding frame material, 14 is a wing reinforcing bar, 15 is a countersunk head bolt, 16 is a road expansion joint,
17 is a jig for installing a road expansion joint, and 18 is a road body.

Claims (1)

[Scope of utility model registration request] The left-handed threaded portion 1 and the right-handed threaded portion in a horizontal double-threaded rod 4 having a left-handed threaded portion 1 on one side, a right-handed threaded portion 2 on the other side, and a rotary tool engaging portion 3 2, the upper end of the holding member 5 and the upper end of the holding member 6 are screwed together, and the lower end of the holding member 5 and the lower end of the holding member 6 are provided with road expansion joint supports parallel to the double screw threaded rod 4, respectively. A jig for installing a road expansion joint, characterized in that a bolt 7 is inserted therein.