JPH0734799Y2 - Flange fastening band separating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is directed to a band that is broken at the time of separation of a tubular joined body by fastening the joining flanges of the tubular joined body that are separable from each other in the circumferential direction. The present invention relates to a flange fastening band separating device that is quickly separated from a joint flange after the band is broken.

(Prior Art) Conventionally, for example, as a separating device that fastens joint flanges of tubular joints that are separably joined to each other and separates a band that is broken when the tubular joints are separated from the joint flange, A separating device as shown in FIGS. 4 to 6 has been disclosed (see Japanese Utility Model Laid-Open No. 61-66100, “Clamping device”).

This clamp device is used as a component of a rocket, and for example, a cylindrical joined body 1 forming a casing of the rocket,
2, the joint flanges 3 and 4 are held by the band 5.
The band 5 is formed in an arc shape by fastening both ends 6a, 6b of the semi-circular pieces 6, 6 and fastening joint flanges 3, 4 extending in the circumferential direction of the tubular joined bodies 1, 2 from the periphery thereof. You can do it. Both ends 6a, 6b of the semi-circular pieces 6, 6 can be broken by an explosive. An engagement shaft 7 extending in the longitudinal direction of the band 5 is provided on the outer peripheral side of the tubular body of the band 5. A rod 9 of a bracket 8 provided on the tubular joint 1 is engaged with the engaging shaft 7, and the rod 9 extends straight in the radial direction of the tubular joints 1 and 2. The rod 9 is urged by the spring 9a of the tubular joint bodies 1 and 2 to separate the separated band 5 from the joint flanges 3 and 4.

(Problems to be solved by the invention) However, in such a conventional clamping device, when both end portions 6a, 6b of the semi-circular pieces 6, 6 constituting the band 5 are separated at the same time, the band 5 and the band 5 are separated before the separation. The portion P ₁ that has engaged with the rod 9 will draw a trajectory that deviates from the straight line extending in the radial direction from the center of the cylindrical joined bodies 1 and 2, as shown in the direction of arrow A in FIG. 7. Therefore, although the adjustment allowance is set for the engagement shaft 7, the rod 9 slides with respect to the engagement shaft 7 and the tensile force of the rod 9 cannot be sufficiently transmitted.
The band 5 may be difficult to separate from the joint flanges 3 and 4. Further, since it is necessary to lengthen the rod 9 in order to reliably separate the band 5 from the joint flanges 3 and 4, there is a problem that the rod 9 and the bracket 8 become high and the clamp device becomes large.

The clamp device according to the present invention has been made in view of the above problems, and a flange fastening band separating device that can surely separate the band from the joining flange when the band is broken and that can reduce the size of the clamp device itself. The challenge is to provide.

(Means for Achieving the Object) In order to achieve the above object, the device for separating a flange fastening band according to the present invention is configured such that connecting flanges of separable tubular joints are arranged in a circumferential direction of the tubular joint. A flange fastening band separating device that separates a band that is fastened from and that is broken at the time of separation of the tubular joined body from the joining flange when the band is broken, in the bracket provided on one side of the tubular joined body. A bearing part extending above the flange is formed, and in this bearing part,
A pair of arms for gripping the band slidably in the longitudinal direction of the band, a biasing means for constantly biasing the pair of arms in a direction away from the joint flange, and a pair of arms that cooperate with each other when the band is separated. And a holding portion that works to hold the band.

(Operation) In the flange fastening band separating device according to the present invention, when the band is broken when the tubular joined bodies are separated from each other, the broken band is grasped from both joining flange sides by the pair of arms and joined. It can be moved away from the flange. At this time, the pair of arms grips the band from both sides of the joint flange, and the force for peeling the band from the joint flange is concentrated on the gripping portion of the band, so that the band can be reliably separated from the joint flange. Become. Moreover, since the band is slidably held by the pair of arms, the band can be allowed to move in the longitudinal direction when the band is broken.

(Embodiment) Hereinafter, an embodiment of a device for separating a flange fastening band according to the present invention will be described with reference to the drawings.

FIG. 1 shows a cross-sectional structure of a clamp device according to an embodiment of the present invention, which is a rocket casing 1 as a tubular joint body.
Joint flanges 12 and 13 that are overlapped with each other at the ends of 0 and 11
Is projected. The joint flanges 12 and 13 are the outer peripheral wall surfaces.
12a and 13a are aligned so that they are flush with each other, and the joint flanges 12 and 13 are fastened by a pair of bands 14 and 14. The band 14 is formed in a semi-circular shape. Both ends of the pair of bands 14 and 14 are joined together, and when the housings 10 and 11 are separated from each other, both ends of the band 14 are separated from each other. The band 14 is composed of a fixing portion 14a for bringing the joining flanges 12, 13 into close contact with each other, and a band body 14b for reinforcing the fixing portion 14a from the outer peripheral wall portion side of the housings 10, 11. Fixed part 14a
A recess 14c for holding the joint flanges 12 and 13 is provided in the. Both ends of the band body 14b are fastened by bolts and nuts that can be broken by electronic control. Fixed part 14
Tapered surfaces 14d and 14d are formed on both sides of a.
A pair of arms 16, 16 of a clamp device 15 (separation device) slidably abut on the tapered surfaces 14d, 14d.

The clamp device 15 includes a bracket 17 (see FIG. 2) that is bolted to the housing 10 located on the ground side, a pair of arms 16 and 16 pivotally supported by the bracket 17, and a pair of arms.
A spring 18 as an urging means for urging the members 16 and 16 in a direction away from the joint flanges 11 and 12, and a holding portion 19 that holds and fixes the band 14 in cooperation with the pair of arms 16 and 16. There is.

The bracket 17 includes a base 17a mounted near the end of the housing 12 with bolts 20 and 20, and a pair of L-shaped standing plate portions 17b and 17b formed on both sides of the base 17a. . The pair of upright plate portions 17b, 17b are joint flanges 1 of the housing 10.
2 has bearing portions 17c, 17c extending above. A mounting shaft 1 for pivotally supporting the pair of arms 16 and 16 is mounted on the bearings 17c and 17c.
7d and 17d are provided. This mounting shaft 17d, 17d has a spring 1
8 and 18 are wound.

Each of the pair of arms 16 and 16 has a pair of bearing plate portions 16a and 16a that are pivotally supported on both sides of the mounting shaft 17d. The claw portions 16b are bent in a "" shape so as to be connected to each other (see FIG. 3). The claw portion 16b is in contact with the tapered surface 14d of the band 14. At the end of the claw 16b on the side of the mounting shaft 17b, the central bent portion of the spring 18
18a is in contact with the band, and this central bent portion 18a
The taper surface 14d of 14 is urged in the direction of pressing.

In this embodiment, the support portions 17c, 17c are connected by the holding portion 19. The ends 18b, 18b of the spring 18 are in contact with the holding portion 19, and the central bent portion 18a and the ends 18b, 18b of the spring 18 are urged toward each other. As a result, the claw portions 16b, 16b of the pair of arms 16, 16 are brought into contact with the band 14
Is urged away from the joint flanges 12 and 13.

In the above embodiment, the pair of arms 16 and the claw portion 16b of the arm 16 are provided.
Bias each other toward each other, and apply this biasing force to the tapered surfaces 14d, 14d of the band 14 so that the claw portion 16b has a tapered surface.
By sliding on 14d, 14d, the band 14 is moved away from the joint flanges 12 and 13, and when the distance is increased, the movement of the band 14 in the longitudinal direction is allowed, but not limited to this, for example, the band 14 14e, 14 facing the housings 10, 11 of
By holding e at the tip of the claw portion 16b and urging the pair of arms 16 and 16 to move upward, the force for separating the band 14 from the joint flanges 12 and 13 can be further reduced.

(Effect of the Invention) Since the device for separating the flange fastening band of the present invention is configured as described above, a rod for pulling the band is not required unlike the conventional device, and therefore the protrusion height from the tubular joint is high. Can be set low. Moreover, since the pair of arms grips both sides of the joining flange of the joining flange to be fastened, a force is concentrated on the band and the band can be reliably separated from the joining flange, so that the reliability of the separating device is improved.

[Brief description of drawings]

FIG. 1 is a sectional configuration diagram of a clamp device according to an embodiment of the present invention, and FIG. 2 is an explanatory view showing a state in which a band is held by a pair of arms and a holding portion of the clamp device of FIG.
1 is a side view of the supporting portion of FIG. 1, FIG. 4 is a cross-sectional configuration diagram of a conventional clamp device, FIG. 5 is a partial configuration diagram of an engagement shaft of the conventional clamp device, and FIG. 6 is a conventional clamp device. It is explanatory drawing when urging the band by. 10, 11 …… Case (cylindrical joint) 12, 13 …… Joining flange 14 …… Band 15 …… Clamping device (separating device) 16,16 …… A pair of arms 17 …… Bracket 17c …… Bearing part 18 …… Spring (biasing means) 19 …… Holding part

Claims (1)

[Scope of utility model registration request] 1. A band for fastening joint flanges of separable tubular joints to each other in a circumferential direction of the tubular joint and breaking the band when the tubular joint is separated from the joint flange when the band is fractured. In a device for separating a flange fastening band to be separated, a support portion extending above the joint flange is formed on a bracket provided on one side of the tubular joint body, and in the support portion,
A pair of arms for gripping the band slidably in the longitudinal direction of the band, a biasing means for constantly biasing the pair of arms in a direction away from the joint flange, and a pair of arms that cooperate with each other when the band is separated. A flange fastening band separating device, comprising: a holding portion that works to hold the band.