JPH056065Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a pipe joining device, particularly a device suitable for joining pipes in a plurality of parallel and multi-stage pipes.

Conventional technology When the pipes to be joined are, for example, reinforced plastic composite pipes, the common method is to hammer the ends of the pipes opposite to the joint side with a hammer or the like. Such a joining method not only tends to damage the end portion, but also generates noise during driving, and requires drilling allowance for hammer swing.

Therefore, as a joining instrument in place of the above-mentioned joining method using a hammer or the like, conventionally, as shown in FIG. It has been proposed that joint receivers 103 and 105 are attached to the joint receivers 103 and 105, the joint receivers 103 and 105 are connected by a connecting member 107 having a traction member 106, and the joint is performed by operating the traction member 106 (Jikkosho). 50-11533).

Problems that the invention aims to solve By the way, in the case of the above-mentioned joining equipment, it is suitable for single pipe piping where pipes are joined one by one, but it is not suitable for use in excavated trenches, tunnels, etc. as shown in Figure 4. For example, a pipe pillow 50 like a power cable laying pipe
It is not suitable for multiple parallel or multi-tiered piping that utilizes. This is because when multiple parallel or multi-tiered pipes are installed, it is difficult to attach the joining receiver 103 to the pipes 101 to be joined due to constraints such as the narrow gap S between the pipes and the pipe wall surface or between the pipes of the existing pipes. This is because it is difficult to install or remove.

Therefore, this invention solves the conventional problems as described above, and allows pipes to be joined even in multiple parallel and multi-tiered pipes without changing the gap S between the pipes that are piped using the pipe pillow 50. The purpose is to provide possible equipment.

Means for Solving the Problems In order to achieve the above object, this invention has the following features:
As shown in FIG. 2, an arcuate member is attached to each other end of a pair of tension bars 6, 6', each end of which is pivotally supported on a base 5, so as to engage with the outer periphery of the end of the pipe 1 to be joined. Both ends of an engagement bar 7 are pivotally supported, and one end of a mounting bar 8 for raising and lowering the engagement bar relative to the tension bars 6, 6' is pivoted to the middle part of the engagement bar 7. 8, the other end of which is engaged with the base body 5 so as to be movable relative to the base body 5; and an engagement ring 22, which is engaged with and attached to the outer periphery of the pipe 2 to be joined. A second joint receiver 20 in which a pushing member 23 is installed on the outer periphery of the second joint receiver 20.
, the base 5 of the first joint receiver 3 and the second joint receiver 20
The device is characterized in that it includes a connecting member 30 that connects the pushing members 23 of.

Function: In order to join the pipe 2 to the pipe 1 which is piped in parallel and in multiple stages using the pipe pillow 50 as shown in FIG. 2, first the engagement bar 7 is After inserting the first joining receiver 3, which has been laid down and folded parallel to the tension bars 6, 6', into the inside of the pipe 1 through the gap S between the sockets 1a of the pipe 1 to be joined (second A), the engagement bar 7 is raised up as shown by the solid line in FIG.

Next, the engagement ring 22 of the second joint receiver 20 is engaged with and attached to the outer periphery of the pipe 2 to be joined, and the push member 23 provided on the second joint receiver 20 is attached.
and the base body 5 of the first joint receiver 3 are connected by a connecting member 30 (FIG. 2B).

All installation work is now complete, and the push-in member 23
When operated in the direction of the arrow, the pipe 2 to be joined is inserted into the pipe 1 to be joined. After the pipe 2 has been inserted to a predetermined position, the connecting member 30 and the second joint receiver 2 are assembled by performing the reverse operation of the above-mentioned installation work.
0 and the first joining receiver 3 are removed, the joining work is completed.

Embodiment The embodiment shown in FIGS. 1 and 2 will be described below, mainly with respect to configurations other than those described above.

The base 5 of the first joint receiver 3 includes a connecting rod 5b in which one end of each tension bar 6, 6' is pivotally supported by pins 9, 9', and one end thereof is fixed to the connecting rod 5b via a spacing piece 5c. A pair of parallel plates 5d, 5
d' and reinforcing ribs 5e, 5e' which connect the parallel plates 5d, 5d' and the connecting rod 5b.
Hook portions 5f, 5f' are cut out at the other ends of d, 5d'.

The engagement bar 7 is formed in a semicircular arc shape capable of engaging with an outer circumferential stepped portion of the socket 1a provided at the end of the pipe 1 to be joined.

10 and 10' are pins that pivotally support both ends of the engagement bar 7 and the other ends of the tension bars 6 and 6';
15 is a pin that pivotally supports the intermediate portion of the engagement bar 7 and one end of the mounting bar 8 via pivot pieces 12 and 13;
is a guide member fixed to the other end side of the mounting bar 8,
The connecting rod 5b of the base body 5 is inserted into the guide path formed between the bar 8 and the engagement bar 7 provided between the other end sides of the tension bars 6 and 6'. When the engaging bar 7 is raised and lowered by the raising and lowering operation lever 17, the connecting rod 5b is guided by the guide member 15 and becomes movable. The undulating operation lever 17 is gate-shaped so that the engaging bar 7 can be easily undulated.

The raising/lowering operation lever 17 is configured to move the tension bars 6, 6' forward relative to the mounting bar 8 when the engaging bar 7 is brought down, and to move the tension bars 6, 6' forward relative to the mounting bar 8, and to move the pins 10, 10' of the bar forward.
By rotating the part upward, the engagement bar 7, tension bars 6, 6', and mounting bar 8 are at the same level, and when the engagement lever 7 is raised, the tension bars 6, 6'
is moved backward with respect to the mounting bar 8, and the pins 10, 10' of the bar are rotated downward, so that the engagement lever 7 is brought from the above state to a state tilted at a substantially right angle to the mounting lever 8.

The engagement ring 22 of the second joint receiver 20 is engaged with an annular engagement portion 22b that can be engaged with the end surface of the socket 2a provided at the end of the pipe 2 to be joined, and a ring-shaped engagement portion 22b that can be engaged with the outer periphery of the end surface. A ring main body 22a consisting of an annular engagement part 22c fixed integrally with the joint part 22b, an arcuate plate 22d arranged at a predetermined distance from the ring main body 22a, and a ring main body 22a and the arcuate plate 2.
2d, and a reinforcing rod 22f for the ring body 22a.
A pushing member 23 is installed on the tube axis direction plate 22e that connects the tubes.

The pushing member 23 includes a ratchet mechanism 23a and a pushing lever 23 that operates the ratchet mechanism 23a.
b, and a rod 23c that moves forward and backward in the tube axis direction via a ratchet mechanism 23a by the operation of a push-in lever 23b, and a plurality of hook portions 23d and 23d' are cut out in the tube axis direction at the tip of the rod 23c. Connecting plates 23e and 23e' are fixedly connected.

The connecting member 30 is a thin tubular rod 3 having a predetermined length.
0a, and engagement pins that are fixed to extend perpendicularly to both ends of the rod 30a and engage with the hook portions 5f, 5f' of the first joint receiver 3 or the hook portions 23d, 23d' of the second joint receiver 20. 30b, 30
It consists of b', 30c, and 30c'.

In the above description, the base body 5, the engagement ring 22, the pushing member 23, the connecting member 30, etc. are merely examples, and it goes without saying that other designs may be used.

Effects of the device As described above, this device can smoothly and easily join pipes in a short time, not only in single pipe piping but also in multiple parallel and multi-tiered pipes, and improves the efficiency of piping work. can be improved. Furthermore, since the joining work can be performed even if the gap between the pipes to be joined is narrow, the cost for excavation can be reduced in the case of pipes that require excavation, such as buried pipes.

[Brief description of the drawings]

Fig. 1 is a perspective view showing an embodiment of this invention, Fig. 2 is an explanatory view of the operation, Fig. 3 is a front view showing a conventional example, and Fig. 4 is a perspective view showing multiple parallel and multistage pipes. . 1, 2...Pipe, 3...First joint receiver, 5...Base, 6, 6'...Tension bar, 7...Engagement bar, 8...Mounting bar, 20...Second joint receiver, 2
2... Engaging ring, 23... Pushing member, 30...
Connecting member.

Claims (1)

[Scope of utility model registration request] Both ends of an arc-shaped engagement bar that is attached to engage with the outer periphery of the end of the pipe to be joined are pivotally supported on each other end of a pair of tension bars, each end of which is pivotally supported on the base body, One end of a mounting bar that raises and lowers the engagement bar with respect to the tension bar is pivotally supported in the middle of the engagement bar, and the other end of this mounting bar is movable relative to the base body. A first joint receiver that is engaged with each other, a second joint receiver that has a pushing member installed on the outer periphery of an engagement ring that is attached to the outer periphery of the pipe to be joined, and a base of the first joint receiver. and a connecting member that connects the pushing member of the second joining receiver.