JPH0329108Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a pipe connecting machine for a plug-in joint used when connecting pipes to each other.

(Prior art) For example, when laying electrical conduit pipes, workers enter a trench to connect the pipes, but there is a risk of the trench wall collapsing, and it is difficult to handle the work in a dark, narrow trench with poor footing. There was a risk of injury as work efficiency was not improved. Therefore, the present inventor first developed a pipe connecting machine, which has been put into practical use and has been well received. However, this pipe connector is not suitable for small diameter pipes, so even if it can be used for small diameter pipes, it may not be suitable.

(Technical Issues) The present invention focuses on the above points, and its purpose is not only to be able to connect various types of pipes regardless of their diameter, but also to enable pipe clamps and connections between pipes to be performed at the same location. To provide a pipe connecting machine for a plug-in joint with good workability, which can be operated with a torque wrench, and can check the plug-in force with a torque wrench.

(Technical Means) The object is to provide a main body 1 which is disposed substantially parallel to the axial direction across both ends of the connecting pipes a and b, and a main body 1 which is arranged substantially parallel to the axial direction across both ends of the pipes a and b to be connected, and one pipe a at one end of the main body 1. a first fixing part 3 equipped with a means for clamping the circumferential side of the first fixing part 3 so as to be openable and closable;
It is attached to the other side of the main body 1 so as to be slidable along the longitudinal direction of the main body, and has a means for locking to a mouth ring r formed at the end of the other pipe b, and is exchangeable depending on the size of the pipe b. a second fixing part 6, a pulling mechanism 7 having means for moving along the longitudinal direction of the main body in order to pull the second fixing part 6 toward the first fixing part 3, and one end of the main body 1. It is equipped with two types of externally operated rotatable drive shafts 2a and 2b attached to the drive shaft, and a link 4 that moves up and down in conjunction with the rotation of one of the drive shafts 2b to open and close the first fixing part 3. an opening/closing mechanism 5, means for operating the pulling mechanism 7 in conjunction with the rotation of the other drive shaft 2a, and the drive shafts 2a, 2.
This is achieved by a configuration that includes engaging parts 8a and 8b for engaging the wrench W, which are provided at the operating end of the part b.

(Function of the invention) The pipe connector of this invention connects one drive shaft 2b of the double drive shafts 2a and 2b attached to the upper part of the main body 1 to the opening/closing mechanism 5 of the first fixed part 3, and also It has a configuration in which the other drive shaft 2a is connected to the pulling mechanism 7 of the second fixing part 6. Further, the engagement portions 8a, 8b at the upper end of each of the drive shafts 2a, 2b are individually operated by a wrench W.

Therefore, when one drive shaft 2b is rotated by the wrench W, the first fixing part 3 opens and closes to clamp the tube a, and when the other drive shaft 2a is rotated, the pulling mechanism 7 , the other pipe b can be pulled in to connect the insertion joint.

When operating the pulling mechanism 7, the torque can be managed by using a torque wrench W, but this is done through the engagement holes 9a and 9 of the engagement portions 8a and 8b.
9b, and an engagement hole 9c into which the claw n on the torque wrench fits.
This can be easily done by using an adapter 9 with a

(Embodiment) To explain with the illustrated embodiment, the main body 1 of this device consists of a long beam section 11 having an inverted U-shaped cross section and a gearbox section 12 fixed to one end of the beam section. Drive shaft 2a
and a mantle tube 13 rotatably housing a cylindrical outer drive shaft 2b therein. The inner drive shaft 2a is connected to the pulling mechanism 7 via a bevel gear 25 provided at the lower end, and the outer drive shaft 2b
is connected to the opening/closing mechanism 5 via a piece 15 screwed thereon and a protruding piece 16 attached thereto. 14
indicates a slit formed at the lower side of the mantle tube 13.

Therefore, the outer drive shaft 2b has a female thread 17 of the piece 15.
There is a male screw 18 on the outer circumferential surface that is screwed into the top, and the top 15 can be raised and lowered by rotating within a certain range. A connecting piece 19 connects the piece projecting piece 16 and the left and right links 4,4. 2
0 is a guide plate, connected to links 4, 4, pipe a
A clamper 21, which is a means for clamping the peripheral side of the
21 is pivotally supported. 22 is its support shaft, 23 is a left and right vise attached to each clamper 21, 21, 2
4 is a vice fixed under the guide plate 20, 24
a indicates anti-slip. Slit 14 to connecting piece 1
9 constitutes the opening/closing mechanism 5.

Therefore, when the outer drive shaft 2b is rotated clockwise, for example, the top 15 rises, and the clamper 2 is moved through the link 4.
1 and 21 close in the direction that tightens the outer periphery of the tube a, and when rotated in the opposite direction, the clamper 2 moves away from the tube a.
1, 21 will be opened.

The inner drive shaft 2a has a bevel gear 25 at the lower end as a connecting means, and a bevel gear 26 meshed with the bevel gear 25.
The chains 29, 29, which are connected to the sprocket shaft 27 through the sprocket shaft 27 and are provided as means for moving along the longitudinal direction of the main body, are connected to driving wheels 28, 28 and driven wheels 30, 30 provided at both ends of the main body.
A slide guide 32, on which an engaging member 31 that engages with the chains 29, 29 projects, is moved toward or away from the pipe a. bevel gear 26
The slide guide 32 constitutes the pulling mechanism 7, and the second fixing portion 6 is attached to the slide guide 32.

33 is a sliding groove, 34 is a ridge that is slidably engaged with the flange, 35 is a pipe holder, and 36 is an adjustment plate provided on the front surface thereof, which is engaged with the mouth ring part r of the other pipe b. As a means, it has an arcuate portion 37 and is replaceable. Since the second fixing part 6 is attached by locking onto the other pipe b, the work becomes very simple. 38 is a protruding piece, 39 is a thumbscrew, and the adjusting plate 3 has a different arcuate portion 37.
6 is used to exchange attachments. 40
indicates a chain adjuster.

FIG. 5 shows an adapter 9 interposed between the torque wrench W and the drive shafts 2a and 2b in order to rotate the drive shafts 2a and 2b. It has square-shaped engagement holes 9a, 9b that engage with the wrench-side claw n, and an engagement hole 9c that engages with the wrench-side claw n. Note that the engagement hole 9c can also be formed at the other end of the engagement holes 8a, 8b of the drive shaft with a different mouth shape. Further, 41 is a spacer fixed to the upper end of the mantle tube 13, 42 is a cover nut, and 43
indicates a torque meter.

(Effect of the invention) The present invention is constructed and operates as described above, so that when one of the coaxial drive shafts 2... is turned, the first fixing part 3 can be opened and closed to be attached to and detached from the pipe a, and the other By turning the second fixing part 6, the second fixing part 6 can be pulled in or separated, so the operation is very easy. Since opening/closing and pulling operations can be performed, it is possible to manage the insertion force of the tubes a and b, especially when the insertion force is specified. Such operations and management can be safely performed from outside the trench, and the worker can proceed with the work while confirming the operation at hand, which has the effect of significantly improving work efficiency.

[Brief explanation of the drawing]

The drawings show one embodiment of the plug-in joint pipe connector according to the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a vertical sectional view of the drive shaft, and Fig. 3 is a cross-sectional view of the drive shaft. FIG. 4 is a front view of the fixing part, FIG. 4 is a front view of the fixing part side shown in FIG. 2, and FIG. 5 is a plan view of the adapter and torque wrench. a, b...Pipe, W...Wrench, 1...Body, 2
a, 2b... Drive shaft, 3... First fixed part, 4...
Link, 5... Opening/closing mechanism, 6... Second fixing part, 7
... Pulling mechanism, 8...a, 8b... Engaging portion.

Claims (1)

[Scope of utility model registration request] A main body 1 is arranged substantially parallel to the axial direction across both ends of the connecting pipes a and b, and one end of the main body 1 is clamped so as to be able to open and close the peripheral side of one pipe a. A first fixing part 3 equipped with a means is attached to the other side of the main body 1 so as to be slidable along the longitudinal direction of the main body, and is locked to a mouth ring part r formed at the end of the other pipe b. a second fixing part 6 which is replaceable depending on the size of the pipe b;
a pulling mechanism 7 having means for moving along the longitudinal direction of the body 1 to pull it in the direction; and an externally operated rotatable 2 mounted on one end of the body 1
Heavy drive shafts 2a and 2b, an opening/closing mechanism 5 having a link 4 that moves up and down in conjunction with the rotation of one of the drive shafts 2b and opens and closes the first fixing part 3, and an opening/closing mechanism 5 that controls the rotation of the other drive shaft 2a. A pipe connecting machine for a plug-in joint, comprising means for interlockingly operating the pulling mechanism 7, and engaging parts 8a, 8b for engaging a wrench W, provided at the operating ends of the drive shafts 2a, 2b. .