JPH076234Y2 - Shield jack holding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for holding a shield jack in a shield machine.

2. Description of the Related Art Conventionally, as shown in FIG. 3, there is a refraction type shield machine with a shield body 31 including a front body 32 and a rear body 33. In this case, the shield jacks 34 arranged at a plurality of peripheral portions within the shield body 31 also need to follow the refraction of the shield body 31, and therefore the base end of the shield jack 34 swings toward the front torso 32 side in the refraction direction. While being movably supported, the intermediate portion was also movably supported by the holding device 35 on the front body 32 side in the bending direction. Below, this holding device 35
Will be described with reference to FIG. The holding device 35 includes a support plate 36 fitted onto the shield jack 34, a pair of upper and lower guide members 37 for supporting and guiding the upper and lower ends of the support plate 36 along the bending direction of the shield body 31, and the shield jack. A bolt 39 provided on the outer periphery of 34 so as to project in the bending direction via a split metal piece 38, a plurality of disc springs 40 externally fitted and attached to the bolt 39, and attached from the outer end side of the bolt 39. And a spring receiving plate 42 that is attached to the shield body 31 side via a mounting bolt 41 to press and bias the disc spring 40.
And a nut 43 mounted on the outer end of the bolt 39 outside the spring receiving plate 42 to adjust the biasing force of the disc spring 40.

In the above configuration, the shield jack 34 is held at a predetermined position by the holding device 35 during normal straight line construction, but the front body 32 bends or swings with respect to the rear body 33 during curved construction (first 3 shows the state seen from the front torso 32 side), the shield jack 34 also swings in the same manner, and it is necessary to move the holding device 35 at its intermediate portion to some extent. At 35, the disc spring 40 can be deformed to follow its movement, so that the shield jack 34 is held without any trouble.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, according to the above-mentioned conventional configuration, there is a problem that the configuration of the holding device 35 itself is complicated, and when the holding device 35 is attached to the shield jack 34, a plurality of bolts 39 are attached to the bolt 39. The disc spring 40 is mounted, and then the bolt 39 is inserted into the spring receiving plate 42, and then the nut 43 is screwed into the bolt 39 for mounting, and the mounting work is performed within the narrow shield body 31. Therefore, there was also a problem that the work was very troublesome.

Then, this invention aims at providing the holding device of the shield jack which can eliminate the said subject.

Means for Solving the Problems In order to solve the above-mentioned problems, a shield jack holding device of the present invention is a mounting bracket attached to a shield body side and having a through hole through which the shield jack can be inserted, and a penetrating hole of the mounting bracket. The outer peripheral portion is fixed to the inner wall of the hole, and the inner peripheral portion is composed of a coil-shaped spring fixed to the outer periphery of the shield jack.

Action In the above configuration, when the shield body is linearly installed, the shield jack is held at the substantially central position of the through hole by the spring force of the coiled spring, but the shield body is curved, that is, the shield body is bent. When constructing,
Since the front body swings with respect to the rear body, the shield jack also follows the swing slowly against the spring force of the coiled spring.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

1 and 2, 1 is a shield jack 2
Is a holding device attached to the middle part of the mounting bracket 6 which is detachably mounted on the shield body side, that is, the front body 3 side through the fixing bolts 4 and has a through hole 5 through which the shield jack 2 can be inserted. And a coil-shaped spring 7 whose outer peripheral portion is fixed to the inner wall of the through hole 5 of the mounting bracket 6 and whose inner peripheral portion is fixed to the outer periphery of the shield jack 2. Therefore, the shield jack 2 is held by the spring force of the coil spring 7.

In the above configuration, when the shield body is straightly installed, as shown in FIG. 1, the shield jack 2 is held at the substantially central position of the through hole 5 by the spring force of the coil spring 7, but When the curved body is installed, that is, when the shield body is bent, the front body swings with respect to the rear body. Therefore, the shield jack 2 also follows the swing slowly against the spring force of the coil spring 7. .

As described above, since the coil spring 7 is used to movably hold the intermediate portion of the shield jack 2, a very simple structure can be obtained. Further, the attachment to the shield jack 2 can be achieved simply by attaching the attachment fitting 6 to the shield body side via the fixing bolt 4.

As described above, according to the configuration of the present invention, since the coiled spring is used to movably hold the intermediate portion of the shield jack, the configuration is very simple and the shield jack can be used. The attachment to the shield body is only required to be attached to the shield body side, and the attachment work can be performed very easily.

[Brief description of drawings]

1 and 2 show an embodiment of the holding device of the present invention. FIG. 1 is a front view, FIG. 2 is a side view, and FIGS. 3 and 4 are conventional examples. 3, FIG. 3 is a schematic overall plan view, and FIG. 4 is a cross-sectional view of essential parts. 1 ... Holding device, 2 ... Shield jack, 3 ... Front body, 4 ... Fixing bolt, 5 ... Through hole, 6 ... Mounting bracket, 7 ... Coil spring.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Creator Yoshio Endo 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Yoshihiro Kuri 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Within Hitachi Shipbuilding Co., Ltd. (72) Keisuke Nakamura 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Inside Hitachi Shipbuilding Co., Ltd. (72) Yuichi Sasaki 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Incorporated (72) Inventor Seiji Naito 1-6-14 Edobori, Nishi-ku, Osaka-shi, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (56) Bibliography 60-154498 (JP, U) JP, U)

Claims (1)

[Scope of utility model registration request] Claims: 1. A mounting fitting which is mounted on the shield body side and has a through hole through which the shield jack can be inserted, an outer peripheral portion being fixed to an inner wall of the through hole of the mounting fitting, and an inner peripheral portion being the outer periphery of the shield jack. A holding device for a shield jack, comprising: a coil-shaped spring fixed to the.