JPH0422147Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention can be used in power plants, chemical plants, etc.
This invention relates to improvements to constant hangers for supporting piping, equipment, etc.

(Prior Art) Figures 4 and 5 show a conventional constant hanger. In the same figure, a pair of parallel plate-like rotating arms 1 are connected by a pivot 17 between a pair of parallel support plates 1 and 1.
1 is rotatably attached. The support plate 1 also includes a spring case 8 containing a coil spring 23.
is fixed, and a roller guide 2 fixed to a spring case 8 is provided in the coil spring 23 in the axial direction. Roller 2 guided by roller guide 2
2 is pivotally attached to one end of the link plate 12 by a roller shaft 21. The other end of the link plate 12 is pivotally supported by a pivot pin 19a of a support nut 19 supported by the rotating arm 11. The support nut 19 is threaded onto the load adjustment bolt 18, and its pivot pin 19 is movably fitted into an elongated hole 11a formed in the rotary arm 11 in the vertical direction. The load adjustment bolt 18 is inserted through the support rod 4 fixed to the upper part of the rotating arm 11 in a direction substantially perpendicular to the axis of the spring case 8 and with its tip facing the pivot shaft 17 . Therefore, by rotating the load adjustment bolt 18, the vertical position of the support nut 19 is moved to change the distance from the pivot 17, that is, the length of the arm of the rotational moment relative to the link plate 12, and adjust the load. can do. A tension bolt 25, one end of which is pivotally supported on the roller shaft 21, freely passes through the case 8.
The other end freely passes through the spring holder 24, and a nut 5 is screwed onto the outside of the spring holder 24, thereby preventing it from coming off. Therefore, by the link plate 12 and the tension bolt 25, the spring 2
It constitutes a tension rod that transmits the elastic force of 3 to the rotating arm 11. The supporting load is supported by the turnbuckle 16, the hanging bolt 14, and the load receiver 15.
It is designed to be supported by the rotating arm 11 via. 3 is an upper mounting bracket for attaching the support plate 1; 10 is a lifting lug for the spring case 8; 7
is a lock pin which is passed through between the support plate 1 and the rotary arm 11 to fix the rotary arm 11.

In this constant hanger, when a load is to be supported, the spring 23 is compressed to balance the compressed load with the weight of a supported object such as a pipe. For this reason, the lock pin 7 is inserted with the spring 23 compressed in advance so that a predetermined supporting force can be obtained when the lock pin 7 is removed after installation. However, the supporting load of the piping, etc. may be different from the one calculated in advance, so in this case, the load can be adjusted by rotating the load adjustment bolt 18.

(Problems to be Solved by the Invention) In the above-mentioned conventional constant hanger, in order to make the rotary arm 11 support the load adjustment bolt 18, the rotary arm 11 is constituted by a pair of parallel plate-shaped members, and the support rod 4 is inserted between them. Because the structure uses a structure in which frames are erected, the width between frames 1 and 1 becomes larger,
There is a problem in that installation in a narrow space where various piping and support devices are complicated is greatly restricted.

Moreover, if there are two rotary arms 11, the weight will be large, the structure as a whole will be complicated, it cannot be manufactured easily, and the manufacturing cost will be high.
Furthermore, since the two rotating arms 11 come into contact with the pivot shaft 17, the friction with the pivot shaft 17 doubles compared to a single arm, which may impede a smooth response when balancing the load. However, there is a problem in that the supporting force cannot be adjusted with high precision.

Therefore, the present invention solves the above-mentioned conventional problems, has a simple structure, can be provided at low cost, makes the rotating arm smaller, and in turn reduces the width of the frame, making it possible to install it in a narrow space. The purpose is to provide a constant hanger that allows fine adjustment of the supporting force.

(Means for Solving the Problems) In the present invention, in order to solve the above conventional problems, a pair of parallel support plates 1, 1 are fixed to one end side of the case 8, and the gap between the support plates 1, 1 is fixed to one end side of the case 8. A rotary arm 31 is pivotally supported, and a load adjustment bolt 18 is inserted into a part of the rotary arm 31 in a direction substantially perpendicular to the axis of the case 8 and with its tip facing the pivot 17 of the rotary arm 31. A support nut 39 is screwed onto this load adjustment bolt 18.
tension rods 12, 2 freely passing through said case 8;
In this constant hanger, the supporting load can be adjusted by pivoting one end of the tension rod 12, 25 and supporting the spring 23 in the case 8 with the spring holder 24 at the other end of the tension rod 12, 25. The rotary arm 31 is provided with the load adjustment bolt 1.
A notch 31a is formed for receiving the nut 8 and allowing movement of the support nut 39.
A backing plate 34 is installed on the upper edge of 1a in a direction perpendicular to the rotary arm 31, a load adjustment bolt 18 is inserted through this backing plate 34, and a tension rod 12 is pivotally attached to the side of a support nut 39. A pivot pin 39a is provided protrudingly.

(Function) In the constant hanger of the present invention, when the load adjustment bolt 18 is rotated, the support nut 39
moves along the notch 31a of the rotary arm 31, and the length of the rotational moment arm can be changed to change the supporting load. Rotating arm 31
Since it is composed of a single plate, it has a simple structure, is light in weight, and is easy to manufacture.Furthermore, the width between the frames 1 and 1 is reduced, and the installation space is accordingly reduced. Since the friction between the rotating arm 31 and the pivot shaft 17 is small, the rotation becomes smooth and the supporting force can be adjusted with high precision.

(Example) Figures 1 to 3 show examples of the present invention. In this embodiment, the same components as those in FIGS. 4 and 5 are designated by the same reference numerals, and the explanation thereof will be omitted.

In FIGS. 1 to 3, the rotary arm 31 is composed of a single plate, and a notch 31a is formed in the rotary arm 31 to receive the load adjustment bolt 18, and a rib 31b is provided at the upper edge of the notch 31a. A backing plate 34 is installed therebetween.
The load adjustment bolt 18 is inserted through this backing plate 34, and a support nut 39 is screwed thereto. The support nut 39 has a pivot pin 3 on the opposite side.
9a and 39a, and a guide groove 39b is formed on the other opposing side surface to movably engage with both side edges of the notch 31a. The other structure is the same as the conventional one, but since the rotary arm 31 is made of a single plate, the gap between the support plates 1 and 1 is narrower, resulting in a smaller size.

The constant hanger of the present invention configured as described above is installed in the same manner as the conventional hanger described above. Since the rotating arm 31 is composed of a single plate, the structure is simple, the weight is small, and manufacturing is easy. Furthermore, the width between the frames 1 and 1 is also reduced. Therefore, it is convenient for installation in a narrow site where a large installation space cannot be taken up. Furthermore, since the friction between the rotary arm 31 and the pivot shaft 17 is small, the rotation of the rotary arm 31 becomes smooth, and the supporting force can be adjusted with high precision.

(Effects of the invention) As described above, in the invention, a pair of parallel support plates 1, 1 are fixed to one end side of the case 8, and the rotary arm 31 is pivotally supported between the support plates 1, 1. A load adjustment bolt 18 is inserted into a part of the rotating arm 31 in a direction substantially perpendicular to the axis of the case 8 and with its tip facing the pivot 17 of the rotating arm 31.
A support nut 39 is screwed onto the load adjustment bolt 18, one end of the tension rod 12, 25 which freely passes through the case 8 is pivotally attached to the support nut 39, and the other end of the tension rod 12, 25 is pivoted to the support nut 39. In the constant hanger with adjustable support load, which supports the spring 23 in the case 8 with the spring holder 24, the rotary arm 31 is composed of a single plate, and the rotary arm 31
A notch 31a is formed in the notch 31a for receiving the load adjustment bolt 18 and allowing movement of the support nut 39, and a backing plate 34 is formed at the upper edge of this notch 31a.
is installed in a direction perpendicular to the rotating arm 31, the load adjustment bolt 18 is inserted into the backing plate 34, and a pivot pin 39a for pivotally attaching the tension rod 12 is provided on the side of the support nut 39, so that rotation is prevented. Since the arm 31 is composed of a single plate, the weight can be reduced and the overall structure can be simplified, so it can be manufactured easily and provided at low cost. can. Also, frame 1,
Since the width between the two spaces becomes smaller, the installation space can be reduced accordingly, and it is therefore convenient for installation in a narrow site where a large installation space cannot be taken up. Furthermore, since the friction on the pivot shaft can be reduced compared to the conventional rotating arm made of two plates, smooth response of the rotating arm 31 and slight support force when balancing the load can be achieved. It has the unique effect of allowing adjustment.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is an enlarged front view of a part of a constant hanger, Figure 2 is a side view of the constant hanger,
FIG. 3 is a sectional view taken from FIG. 1, FIG. 4 is a partially cutaway front view of a conventional constant hanger, and FIG. 5 is a side view of the conventional constant hanger. 1...Support plate, 8...Case, 12...Link plate (tension rod), 17...Pivot, 18...Load adjustment bolt, 39...Support nut, 23...Coil spring, 24...Spring holder , 25... Tension bolt (tension rod), 31... Rotating arm, 31
a...notch, 34...batten plate.

Claims (1)

[Scope of utility model registration request] A pair of parallel support plates are fixed to one end of the case,
A rotary arm is pivotally supported between the support plates, and a load adjustment bolt is inserted into a part of the rotary arm in a direction approximately perpendicular to the axis of the case, with the tip facing the pivot of the rotary arm to adjust the load. A support nut is screwed onto the bolt, one end of a tension rod that freely passes through the case is pivotally attached to the support nut, and the spring inside the case is supported by a spring holder at the other end of the tension rod to adjust the support load. In a possible constant hanger,
The rotary arm is composed of a single plate, and a notch is formed in the rotary arm to receive the load adjustment bolt and allow movement of the support nut, and a backing plate is attached to the upper edge of the notch to be perpendicular to the rotary arm. A constant hanger, characterized in that a load adjustment bolt is inserted into the backing plate, and a pivot pin for pivotally connecting a tension rod is provided on the side of the support nut.