JPH0351540A - Supporting device - Google Patents

Abstract

PURPOSE:To secure the optimum supporting function and obviate the need of inspection and reset works by installing a pulling-back means for retreating a stopper in a specific direction and a lock means which is engaged with the stopper and restrains the shift in the axial direction of the stopper. CONSTITUTION:A pulling-back means 10 is equipped with a discshaped pulling- back spring receiving device 10A and a pulling-back spring 10B fixed onto a stopper 8. A pushing means 5 advances the stopper 8 against the pulling-back means 10. A lock means 4A is engaged with the stopper 8 and restrains the shift of the stopper 8. The engagement between the lock means 4A and the stopper 8 is generated when the shift quantity of an inside supporting means 2 reaches a prescribed value. The pulling-back means 10A and 10B operate when the stopper 8 and the lock means 4A are not engaged. Therefore, the optimum supporting faculty is provided, and the need of inspection and reset works is obviated.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a support device for fixing and installing equipment, piping, etc. to a support structure, and the present invention relates to a support device that fixes and installs equipment, piping, etc. to a support structure, and is capable of handling self-weight and thermal loads that act normally, as well as those that act during earthquakes. The present invention relates to a support device having a locking mechanism and an automatic release function that provides effective support for sudden large loads.

[Conventional technology]

Equipment and piping, such as piping and ventilation and air conditioning ducts, are fixed and installed on support structures such as buildings and structures via support devices.

The functions required of this support device are to support the weight of the equipment, piping, etc. that is the supported object, and to rigidly support the sudden large loads that act on the supported object during earthquakes, etc. In addition to reducing the load, it is also important not to restrict the deformation of the supported object due to the heat of the fluid contained in the supported object as much as possible. Among these, spring hangers using coil springs are widely used as support devices for dead weight, but they do not have the function of supporting sudden large loads such as during earthquakes. In addition, snappers are a support device that supports large loads during earthquakes without restraining thermal deformation of supported objects, but the hydraulic or mechanical mechanisms are complex and have many parts, making disassembly and inspection labor-intensive. It has a precision structure that requires

On the other hand, Japanese Patent Application Laid-Open No. 57-73284 was developed as a device that restrains vibrations during earthquakes without restraining minute movements of supported objects.
There is an invention described in Publication No. 2. This invention consists of a shaft rod with a spherical end and a socket that grips the spherical end, and when the piping, which is a supported object, is moved due to shaking during an earthquake, the amplitude of the piping is set in advance. When the amplitude is below this value, the shaft moves in the same way as the pipe, and when the amplitude exceeds the set value, the spherical end is gripped by the socket and has the function of restraining the movement of the pipe. According to this invention, it is possible to obtain the effect of suppressing vibrations throughout the duration of an earthquake, from minute amplitudes to large vibrations of piping, but this device itself does not have the function of supporting the weight of the supported object, It is intended to be installed as an additional addition to a supported piping system, and its structure requires work to restore it to its initial state after each earthquake.

6- [Problems to be solved by the invention] Japan is one of the most earthquake-prone countries, and various industrial facilities have been strengthened in earthquake-resistant design in recent years, such as by establishing their own seismic design standards, and are making it easier to reduce the impact of earthquake loads. For pipes that are susceptible to damage, expensive support devices with complicated structures are used. On the other hand, as technology becomes more sophisticated, there is a strong desire to rationalize equipment from an economic standpoint.

As mentioned above, the functions that should be considered in the design of support devices for equipment, piping, etc. are: ■ Supporting the own weight of the supported object ■ Supporting sudden large loads that act during earthquakes, etc. ■ Deformation of the supported object due to heat There is a non-restriction of Conventional technology has been unable to meet these required functions by ■,■
For example, there is a spring hanger as a support device that satisfies the above requirement, but it does not have the function (2). In addition, there is a snapper, for example, as a support device having the functions (1) to (3), but because of its complicated and precise structure, disassembly, inspection, and maintenance are labor-intensive. Further, as a support device that satisfies (1) and (2), there is, for example, a vibration damping device described in the aforementioned Japanese Patent Application Laid-open No. 7-157-73284, but it does not have the function (2).

The object of the present invention is to support equipment, piping, etc. with a simple and inexpensive structure that can be easily disassembled, inspected, and maintained, while simultaneously satisfying the above-mentioned functions required of supporting devices for equipment, piping, etc. There is something to do.

[Means to solve the problem]

The above problem is to solve the above problem by providing a support structure for supporting equipment, piping, etc., which is equipped with a coil spring that supports the weight of equipment, piping, etc., a support structure connected to both ends of the coil spring, and a connecting part to the equipment, piping, etc. A supporting device fixed and installed in a support device, comprising: an outer support means that includes the connecting portion on one side and has a coil spring therein on the axis opposite to the connecting portion and supports the fixed end of the coil spring; a shaft A that is concentrically contained within the coil spring inside the support means and has one end fixed to the outer support means; an inner support means arranged in a shape to support the moving side end of the coil spring and having the connecting portion on the opposite side of the coil spring 8; A stopper that moves in the direction of spring expansion and contraction and is arranged to be retractable in a direction perpendicular to the axial direction of the coil spring; a pull-back means for retracting the stopper in the direction perpendicular to the axial direction of the coil spring; pushing means for advancing the stopper in a direction perpendicular to the direction of the coil spring axis as the coil spring is compressed, overcoming the pull-back means; locking means for restraining movement of the shaft A in the axial direction;
The locking means and the stopper are configured to engage when the amount of movement of the inner support means in the coil spring compression direction reaches a predetermined value, and the pulling back means engages the stopper with the locking means. This is accomplished by a support device configured to operate when the two are not engaged.

Moreover, the above-mentioned problem is also achieved by the support device according to claim 1, wherein a guide that slides on the inner peripheral surface of the outer supporting means is provided on the outer peripheral surface of the inner supporting means.

The above problem is also solved by the pushing means having a stopper moving surface fixed to the inner circumferential surface of the outer supporting means and inclined with respect to the moving direction of the inner supporting means, and the pulling back means having one end as the stopper and the other end as the stopper moving surface. A pull-back spring is coupled to a pull-back spring holder that moves along the extrusion means and pulls the stopper to the buckle moving surface. This is also achieved by a support device according to claim 1 or 2, in which the width of the U-shape comprises a portion sized to engage locking means provided on the axis A.

The above problem can also be solved by the support device according to claim 3, in which the retraction spring receiver is in contact with the stopper pushing means via a spherical or spindle-shaped rotating part.
This can also be achieved by the supporting device according to claim 3, which is a single member formed in the shape of a lightning bolt. .

The above object is also achieved by the support device according to any one of claims 1 to 5, wherein the coil spring is attached to the outer peripheral side of the inner support 10 holding means.

The above problem is solved in a support device that includes a coil spring that supports the weight of piping, equipment, etc., and a connecting part that is connected to both ends of the coil spring and connects the coil spring to a support structure, equipment, piping, etc. The present invention is also achieved by a support device characterized by comprising means for limiting the amount of rapid expansion and contraction of the coil spring to a predetermined value or less.

The above problem is further solved by a means for limiting the rapid expansion and contraction of the coil spring to a predetermined value or less, which is coupled to one of the connecting parts and moves parallel to the axis of the coil spring as the coil spring expands and contracts. a stopper that moves back and forth in a direction perpendicular to the axis; and a shaft that is arranged parallel to the axis of the coil spring and has one end connected to the other connecting part, the shaft being such that the stopper moves forward and backward in a direction perpendicular to the axis. The supporting device according to claim 7, further comprising means for restraining the movement of the stopper parallel to the axis by coming into contact with the stopper when the reconnaissance device advances beyond a predetermined value in a direction perpendicular to the axis. be intimidated.

[Effect]

In order to support the weight of the supported object and not restrict deformation of the supported object due to heat, a support device using a coil spring is the simplest structure. On the other hand, in order to support a sudden large load such as during an earthquake, the simplest structure is a support device that uses a shaft that has a shaft rigidity that is significantly higher than the rigidity of the supported object. Furthermore, since earthquakes and the like that apply sudden large loads are temporary, it is sufficient to have a structure that supports its own weight and does not restrict thermal deformation when these events are over.

In the present invention, double support means for inner and outer parts each having a connection part connected to a support structure or a supported object such as piping or equipment are connected via a coil spring disposed inside the support means,
A shaft is installed inside the coil spring with its axes aligned with each other, and one end of the shaft is fixed to the outer support means.

A connecting portion connected to a support structure or a supported object, the shaft, and the coil spring are arranged approximately on the same line, and a force applied to the connecting portion acts in a direction to expand and contract the coil spring. .

The amount of movement of the inner support means until the stopper comes into contact with the shaft and stops the movement of the inner support means in the coil spring compression direction is set to be larger than the amount of movement due to thermal deformation of the supported object.

Therefore, the present support device normally operates as a support device that supports its own weight without restricting the movement of the supported object due to thermal deformation. On the other hand, when a sudden large load is applied, such as during an earthquake, this support device is also compressed in its axial direction due to the large amplitude displacement applied to the supported object, and the overall length of the shaft becomes relatively smaller due to the compressed coil spring. The locking means of the shaft engages with a stopper which is elongated and pushed out in the axial direction of the coil spring in conjunction with this compression movement. In this state, the large load transmitted from the supported object is supported by a relatively rigid shaft via the connecting part, inner support means, and stopper, making it an effective support device against earthquake loads, etc. It acts as.

In addition, a pullback spring connected to the outer support means is connected to the end of the above-mentioned stroke stopper, and the engagement between the shaft and the stopper is maintained by the frictional force generated between the shaft and the stopper during periods when a large load is applied. However, as this load approaches its end and the frictional force between the shaft and the stopper decreases, the restoring force of the pullback spring overcomes the frictional force and the stopper is pulled back to its normal position, allowing this support device to withstand earthquake loads, etc. It automatically returns to the previous self-weight supporting state.

〔Example〕

Hereinafter, an embodiment of the first step of the present invention will be described with reference to FIGS. 1 to 6.

FIG. 1 shows a schematic configuration of a support device according to the present invention. This support device has a fixed part 3, which is a connection part with the supported object or support structure, on one side, and has a self-weight supporting spring 9, which is a coil spring, on the axis opposite to the fixed part 3. , an outer cylinder 1 which is an outer support means supporting and fixing the fixed side end of the self-weight supporting spring 9; A rod 4 in the shape of a round bar, which is an axis A fixed to the outer cylinder 1, is movable in the outer cylinder 141 in the axial direction of the outer cylinder 1, and is arranged concentrically with the self-weight supporting spring 9. and an inner cylinder 2 which is an inner support means that supports and fixes the movable side end of the self-weight support spring 9 and is provided with a support portion 6 which is a connecting portion on the opposite side from the self-weight support spring 9; A stopper 8 is mounted to penetrate the outer circumferential wall of the cylinder 2 and moves together with the inner cylinder 2 in the expansion and contraction direction of the self-weight supporting spring 9 (in the axial direction of the outer cylinder 1), and the stopper 8 is attached to the inner peripheral wall of the outer cylinder l. a pull-back means 10 for pulling the stonopa extrusion part 5 side, which is an extrusion means fixed to the
It is equipped with a guide 7 that is attached to the outer peripheral wall of the inner cylinder 2 and slides on the inner peripheral surface of the outer cylinder.

The outer cylinder 1 has a cylindrical shape with one end closed, and a fixing part 3 is fixed to one side of the closed end IA with its axis aligned with the axis of the outer cylinder 1. A self-weight supporting spring 9 is fixed to the opposite side of the fixed part 3 of the part 1A with its axis aligned with the axis of the outer cylinder 1. The rod 4 has its axis aligned with the outer cylinder 1.
The rod 4 is installed inside the self-weight supporting spring 9 in alignment with the axis of the rod 4, and one end of the rod 4 is fixed to the end IA. In addition, the tip of the rod 4 (the end opposite to the side fixed to A) is shaped like a cone with an apex on the tip side, and is close to the bottom of the cone. A constricted portion 4A, which is a locking means with a partially reduced diameter, is provided at the position.

The inner cylinder 2 has a cylindrical part 2C in which the self-weight support spring 9 is installed, a spring support part 2A that is provided at the end of the cylindrical part 2C and fixes and supports the movable end of the self-weight support spring 9, and one end that supports the spring. A cylindrical stopper attachment part 2B is coupled to the part 2A and has a support part 6 coupled to the other end. The cylindrical portion 2C, the spring support portion 2A, the stopper mounting portion 2B, and the support portion 6 are arranged so that their axes coincide with the axis of the rod 4.

The guides 7 are arranged at three almost equally spaced locations on the same circumferential surface of the cylindrical portion 2C, so that when the inner tube 2 moves relative to the outer tube, the axis of the inner tube 2 is aligned. , maintain a state parallel to the axis of the outer cylinder 1.

In this embodiment, the weight of the object to be supported is applied in the direction of stretching the weight support spring 9, and the length -16 of the spring 9 is longer than the lot 4 in the unloaded state.

As shown in the third country, the stopper extrusion part 5 fixed to the inner peripheral surface of the outer cylinder 1 has a stopper moving surface 5A, which is an inclined surface that approaches the axis of the outer cylinder 1 as it approaches the end 1A, and the stopper A spring receiving sliding part 5B is provided on the inner peripheral surface side of the outer cylinder of the moving surface, and is provided parallel to the axis of the outer cylinder 1, and both are divided into two by a groove 5C extending in the longitudinal direction of the outer cylinder. .

Pull-back means] O is a disk-shaped pull-back spring receiver 1 that slides on a surface opposite to the inner circumferential surface of the outer cylinder of the spring receiver sliding portion 5B. OA
Then, one end is pulled back to the spring receiver 10A, and the other end is attached to the stopper 8.
The pull-back spring 10B is fixed to the pull-back spring 10B. The pullback spring IOB is movable together with the stopper 8 in the groove 5C of the stopper extrusion portion 5 in the axial direction of the outer cylinder 1. The strength of the pullback spring 10B may be such that it can pull the stopper 8 in a state where no load is applied to the stopper 8.

As shown in FIG. 2, the stopper 8 has a stepped U-shape in which the width of the open end (hereinafter referred to as the upper end) is larger than the width of the opposite end (hereinafter referred to as the lower end). The stopper is inserted through the hole 2D provided in the mounting part 2B so that it can advance and retreat up and down, and even when it is retracted downward to the maximum extent, the upper end of the U-shape comes out of the stopper mounting part. Further, the lower end of the stopper 8 is coupled to the pullback spring IOB as described above, and is pulled downward by the pullback spring IOB, so that the shoulder 8A of the stopper 8 is normally in contact with the stopper moving surface 5A. Further, the opening width at the upper part of the stopper 8 is larger than the maximum diameter of the conical part formed at the tip of the rod 4, and the opening width at the lower part is larger than the diameter of the constricted part 4A of the rod 4. It is made smaller than the diameter of.

In the supporting device having the above configuration, when the supporting device is attached with the supporting part 6 connected to the supported object and the fixing part 3 connected to the supporting structure, in a normal state, only the weight of the supported object is supported. In addition, this weight is supported by the stress generated as the self-weight support spring 9 expands.

When a sudden large load is applied to the supported object due to an earthquake or the like, the load is transmitted to the inner cylinder through the support part 6, and the inner cylinder 2 is supported by its own weight supporting spring as shown in FIG. While compressing 9, it moves to the fixed part 3 side. As the inner cylinder 2 moves, the stopper 8 inserted into the stopper mounting part 2B also slides its shoulder 8A on the stopper moving surface 5, and the fixed part 3
Move to the side.

Since the stopper moving surface 5A is an inclined surface that approaches the axis of the outer cylinder 1 as it approaches the fixed part 3, the stopper 8 moves toward the fixed part 3 side (lot 4) while extending the pullback spring IOB.
While approaching the tip), the rod 4 is pushed out in a direction approaching the axis, that is, in a direction approaching the axis of the rod 4. When this amount of movement exceeds the set value, the wide part of the upper end of the stopper 8 passes through the tip of the rod 4 in the axial direction and also in the direction perpendicular to the axis, causing the stopper to become narrower. The part is shaped to sandwich the constricted part 4A of the rod 4. In the above state shown in FIG. 6, the stopper 8 comes into contact with the radial surface (step surface) on the fixed portion 3 side of the constricted portion 4A of the rod 4, so that the stopper 8 comes into contact with the radial surface (step surface) on the fixed portion 3 side. 19 9) is restricted, and therefore the movement of the inner cylinder 2 and the supported object is also restricted. That is, the rod 4 prevents the supported object from further moving toward the fixed portion 3 side.

Next, when the object to be supported tries to swing back in the opposite direction, the inner cylinder 2 moves to the left in FIG. is sudden, the pullback spring IOB
Due to the restoring force of Movement of the tube 2 toward the support portion 6 is restricted. The seismic motion is repeated, and while the stopper 8 is moving between both ends of the constricted portion 4A, the seismic motion is gradually attenuated, and at the same time, the stopper 8 is attracted to the stopper moving surface by the restoring force of the pullback spring IOB, and the stopper 8 and the constriction are pulled together by the restoring force of the pullback spring IOB. The engagement with portion 4A is released. As a result, the supported object returns to the state before the earthquake motion. Furthermore, when the side surface of the support portion of the stopper 8 is in contact with the radial surface on the support portion side of the constricted portion 204A, the friction force generated at the abutted portion due to the restoring force of the self-weight supporting spring and the self-weight of the supported object is By slightly increasing the restoring force of the retracting spring in this state, the return of the stopper 8 to the normal state after the end of the earthquake motion may be ensured.

FIG. 7 shows a second embodiment of the present invention, in which the self-weight supporting spring 9
is mounted on the outer circumferential side of the inner cylinder 2, and a spring support portion 2A is provided on the outer circumferential side of the inner cylinder 2. According to this embodiment, the inner cylinder 2
This has the effect of simplifying the shape of.

FIGS. 8A and 8B show a third embodiment of the present invention, in which a ball 12 is disposed between the pullback spring receiver 10A and the inner curved surface of the outer cylinder and the spring receiver sliding portion 5B to synchronize with the stopper 8. The movement of the pullback spring receiver 10A is made smooth.

The shape of the stopper 8 is the constriction portion 4A of the rod 4.
It may be inserted into the support device to restrain the relative movement of the stopper 8 and the rod 4, and depending on the capacity of the support device, it may be simplified to a 21-plate shape as shown in Fig. 9. good.

In the above embodiment, both the outer cylinder and the inner cylinder are cylindrical, but they do not necessarily have to be cylindrical. The inner cylinder may be provided with a sliding support means for the guide 7, a holding means for the stopper 8, and a support means for the self-weight supporting spring 9, respectively.

The position of the inner cylinder 2 where the stopper 8 comes into contact with the constriction of the rod 4, that is, the amount of compression of the self-weight support spring 9, is determined by calculating the amount of movement of the support part 6 based on the assumed thermal expansion of the supported object. This is set to a value larger than the amount of compression of the self-weight supporting spring 9 which corresponds to the amount of compression. By setting in this way, movement of the supported part due to thermal expansion is not inhibited.

The support device of the above embodiment has an inexpensive and simple structure, and inspection and maintenance of the support device are easy.

〔Effect of the invention〕

When equipment such as piping, ventilation and air conditioning ducts, etc. are fixed and installed on a support structure as supported objects, by using the support device according to the present invention, the weight of the equipment is normally supported by the spring. At the same time, by not restraining deformation due to heat and supporting it with a rigid rod when a sudden large load is applied, such as during an earthquake, it is possible to provide an optimal support function under any load condition. In addition, since it automatically returns to the normal spring support state when a heavy load ends, there is no need for inspection or reset work after the end of a heavy load such as an earthquake.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the first embodiment of the present invention, FIG. 2 is a sectional view taken along line nn in FIG. 1, and FIG. 3 is a perspective view of the portion of the embodiment shown in FIG. 1. , FIG. 4 is a partial sectional view showing the operation of the embodiment shown in FIG. 1, FIGS. 5 and 6 are longitudinal sectional views showing the state of the embodiment shown in FIG. 1 during operation, and FIG. The figures are longitudinal sectional views showing the second embodiment of the present invention, Figures 8A and 8
FIG. B is a partial sectional view showing the third embodiment of the present invention, and FIG.
The figure is a sectional view showing another example of the shape of the stopper. 1. Outer support means, 2. Inner support means, 23 3, 6. Connecting portion, 4. Axis A, 4A... Locking means, 5. Extrusion means, 7. Guide, 8. Stopper. 9 Coil spring, IOA, IOB... pullback means.

Claims (1)

[Claims] 1. A coil spring that supports the weight of equipment, piping, etc., a support structure connected to both ends of the coil spring, and a connection part with the equipment, piping, etc., to support equipment, piping, etc. In a support device fixed and installed on a support structure, an outer support means includes the connecting portion on one side and has a coil spring therein on an axis opposite to the connecting portion, and supports a fixed side end of the coil spring. , a shaft A that is concentrically contained within the coil spring inside the outer support means and has one end fixed to the outer support means, and a shaft A that is movable within the outer support means in the axial direction of the outer support means and the coil an inner support means arranged concentrically with the spring and supporting the moving end of the coil spring and having the connecting portion on the opposite side of the coil spring; and an inner support means engaged with the inner support means. a stopper that moves in the direction of expansion and contraction of the coil spring and is arranged to be movable back and forth in a direction perpendicular to the axial direction of the coil spring; a pull-back means for retracting the stopper in a direction perpendicular to the axial direction of the coil spring; pushing means for advancing the stopper in a direction perpendicular to the coil spring axial direction overcoming the pulling back means as the stopper moves in the direction of compression of the coil spring; locking means for restraining the movement of the stopper in the axial direction of the shaft A, and the locking means and the stopper engage with each other when the amount of movement of the inner support means in the coil spring compression direction reaches a predetermined value. 2. A support device according to claim 1, wherein said retracting means is configured to operate when said stopper and said locking means are not engaged. 2. The support device according to claim 1, wherein a guide is provided on the outer peripheral surface of the inner supporting means and slides on the inner peripheral surface of the outer supporting means. 3. The extrusion means has a stopper moving surface fixed to the inner peripheral surface of the outer support means and inclined with respect to the moving direction of the inner support means, and the pull-back means has one end as a stopper and the other end along the extrusion means. The lock is provided with a stopper retracting spring coupled to a moving retracting spring receiver and drawing the stopper to the stopper moving surface, the stopper is U-shaped formed to sandwich the shaft A, and the width of the U-shape is the lock provided on the shaft A. Support device according to claim 1 or 2, characterized in that it comprises a portion sized to engage the means. 4. The support device according to claim 3, wherein the retraction spring receiver is in contact with the stopper pushing means via a spherical or spindle-shaped rotating portion. 5. The support device according to claim 3, wherein the stopper is a single member shaped like a lightning bolt. 6. The support device according to claim 1, wherein the coil spring is attached to the outer peripheral side of the inner support means. 7. A support device comprising a coil spring that supports the weight of piping, equipment, etc., and a connecting portion coupled to both ends of the coil spring to connect the coil spring to a support structure, equipment, piping, etc. A support device comprising means for limiting the amount of rapid expansion and contraction of a spring to a predetermined value or less. 8. A means for limiting the amount of sudden expansion and contraction of the coil spring to a predetermined value or less is coupled to one of the connecting parts, and as the coil spring expands and contracts, the means moves parallel to the axis of the coil spring and also moves along the axis. a stopper that moves back and forth in a direction perpendicular to the coil spring; and a shaft that is arranged parallel to the axis of the coil spring and has one end connected to the other connecting part, 8. The support device according to claim 7, further comprising means for abutting the stopper at a position advanced beyond a predetermined value in the direction to restrain movement of the stopper parallel to the axis.