JP6910691B1 - Support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support device which is compact, has excellent portability, is easy to construct, and has a vibration isolating function that does not vibrate a building under normal use conditions. SOLUTION: A pair of lower links 11a and 11b are connected to a base 10 via a pair of rotating portions 12a and 12b so as to be rotatable. The pair of upper links 21a and 21b are connected to the pedestal 20 via a pair of rotating portions 22a and 22b so as to be rotatable. The lower link 11a and the upper link 21a are connected to each other via a joint 30a so as to be rotatable with each other. The lower link 11b and the upper link 21b are connected to each other via a joint 30b so as to be rotatable with each other. A vibration-proof shaft 40 having a vibration-proof unit having a vibration-proof function is bridged between the joints 30a and 30b. By rotating the anti-vibration shaft 40 using the handle, the distance between the pair of joints 30a and 30b is increased or decreased, and the distance between the pedestal 10 and the base 20 is changed. [Selection diagram] Fig. 2

Description

The present invention relates to a support device for supporting a trailer house, a temporary house, or the like.

Temporary facilities such as temporary housing and mobile homes installed in the event of a disaster require prescribed habitability and seismic performance. Therefore, when setting up, a concrete foundation is laid on the ground, and after the concrete has hardened, the concrete foundation It is preferable to fasten to the anchor bolts embedded in the concrete in advance. However, in consideration of the need to set up these temporary facilities in a short period of time and the withdrawal and relocation after use, many structures supported by jacks and concrete blocks have been adopted.

In most cases, the support structure that supports the temporary facility with jacks or concrete blocks does not have sufficient countermeasures against earthquakes, causing lateral slippage with the support structure, or the temporary facility may separate from the support structure and collapse. Gender cannot be denied.

Patent Document 1 proposes a seismic isolation foundation structure using tires. Specifically, a plurality of tires with wheels filled with a filler inside a steel pipe erected on the bottom plate are stacked, a hydraulic cylinder is inserted in the center thereof, and the lower end of the hydraulic cylinder is used as the bottom plate. A seismic isolation mechanism is constructed by fixing the upper end to the uppermost wheel, and a skeleton support portion that supports the lower end of the building is provided above the seismic isolation mechanism.

Utility Model Registration Bulletin No. 3209447

However, in the seismic isolation basic structure proposed in Patent Document 1, since it is necessary to stack a plurality of tires filled with a filler in a steel pipe, the scale of the seismic isolation basic structure has to be increased. do not have. Moreover, since the hydraulic cylinder is inserted inside the stacked tires, the construction is not always easy. Furthermore, since the building is supported by hydraulic cylinders and tires, the building will sway due to the movement of people in the building and strong winds, which will contribute to the deterioration of the living environment.

The present invention has been made by paying attention to these problems, and provides a support device which is compact, has excellent portability, is easy to install, and has a vibration isolating function that does not vibrate the building under normal use conditions. Is what you do.

The invention for solving the above problems is a support device, which is a pair of lower links connected to a base, a pair of upper links connected to a pedestal, a pair of lower links, and a pair of upper links. A vibration-proof shaft having a pair of joints connecting the two joints and a vibration-proof unit bridged between the pair of joints, the vibration-proof unit includes a first member, a second member in contact with the first member, and the like. When a spring that is connected to the first member at one end and is connected to the second member at the other end while a specific tensile force is applied and a tensile force exceeding the specific tensile force is applied to the vibration isolation shaft, the first The contact between the first member and the second member is released, the distance between the pair of joints increases, and the distance between the base and the pedestal decreases.

According to this configuration, the distance between the base and the pedestal does not change when the tension applied to the anti-vibration shaft does not exceed the first tension. It does not sway when the applied tension does not exceed the first tension.
According to this configuration, the building is impacted by the initial motion of the earthquake, but when the tension applied to the vibration isolation shaft exceeds the first tension, the distance between the base and the pedestal decreases and the spring Elasticity mitigates sudden changes in the displacement velocity of the building at the moment of impact.

Preferably, the anti-vibration unit is characterized by including anti-vibration rubber connected to the first member and the second member.

According to this configuration, the anti-vibration unit includes anti-vibration rubber connected to the first member and the second member, so that the elasticity of the spring and the anti-vibration rubber causes a sudden displacement velocity of the building at the moment of impact. Change is mitigated. In addition, the anti-vibration rubber has the property that the spring constant suddenly increases with deformation and has the function of absorbing a large impact energy, so the impact that the building receives can be mitigated by stretching the anti-vibration rubber. .. Furthermore, since the anti-vibration rubber has a higher damping function than the metal spring, it is possible to quickly dampen the vibration caused by the seismic motion after the building is impacted.

Preferably, the first member and the second member work together to define a closed space.

According to this configuration, the air existing in the closed space is decompressed and the air flows in from the external space, so that the first member and the second member can cooperate with each other to have a damping function.

Preferably, the first member and / or the second member is provided with a passage hole through which air existing in the closed space and air existing in the external space can pass through each other.

According to this configuration, by appropriately selecting the size and position of the passing hole, the velocity of the air flowing in and out of the closed space from the passing hole can be appropriately controlled, and a large damping effect can be obtained.

Preferably, the specific tensile force applied to the spring exceeds the tensile force applied to the anti-vibration shaft at normal times and does not exceed the tensile force applied to the anti-vibration shaft at the time of an earthquake.

According to this configuration, the specific tensile force applied to the spring exceeds the tensile force applied in the normal state, so that the building does not shake in the normal time. In addition, since it does not exceed the tensile force applied during an earthquake, it exhibits an anti-vibration function during an earthquake.

Preferably, the distance between the base and the pedestal is changed by rotating the anti-vibration shaft.

According to this configuration, the distance between the base and the pedestal changes by rotating the anti-vibration shaft, so that the height can be easily adjusted. This makes it easy to set up a building even when it is installed on uneven ground.

It is a front view which a support device supports a trailer house. It is a front view of the support device in 1st Embodiment. (A) is a front view of the anti-vibration unit in the first embodiment. (B) is a cross-sectional view taken along the line AA. (A) is a front view of the anti-vibration unit in the second embodiment. (B) is a cross-sectional view taken along the line BB. (A) is a front view of the vibration isolation unit according to the third embodiment. (B) is a cross-sectional view taken along the line CC.

Hereinafter, the first embodiment of the present invention will be described in detail with reference to FIGS.

As shown in FIG. 1, the support device 1 supports the four corners of the trailer house 100 in a state of being mounted on the foundation 2 provided on the ground 110. The wheels 101 attached to the trailer house 100 are restrained from rotating by a car stop 102 provided on the ground 110. If the wheel 101 is kept in the same position for a long period of time while being in contact with the ground 110, deformation is promoted. Therefore, it is preferable that the wheel 101 is slightly lifted from the ground 110. In the first embodiment, the target supported by the support device 1 is the trailer house 100, but it may be a temporary house to which the wheels 101 are not attached.

As shown in FIG. 2, the pair of lower links 11a and 11b are connected to the base 10 via the pair of rotating portions 12a and 12b so as to be rotatable. Further, the pair of upper links 21a and 21b are connected to the pedestal 20 via the pair of rotating portions 22a and 22b so as to be rotatable. Further, the base 10 is mounted on the foundation 2, and the pedestal 20 supports the trailer house 100 (see FIG. 1).

The lower link 11a and the upper link 21a are connected to each other via a joint 30a so as to be rotatable with each other. Similarly, the lower link 11b and the upper link 21b are connected to each other via a joint 30b so as to be rotatable with each other. Further, the anti-vibration shaft 40 is bridged between the joints 30a and 30b.

The anti-vibration shaft 40 has a first shaft 41, a second shaft 42, and an anti-vibration unit 43. The first shaft 41 and the second shaft 42 are connected via a vibration isolation unit 43. A screw groove 41a is formed in the first shaft 41, and a nut (not shown) screwed into the screw groove 41a is attached to the joint 30a. The second shaft 42 is pivotally supported by a shaft support cylinder 31 attached to the joint 30b. The shaft support cylinder 31 is sandwiched between thrust receiving portions 45a and 45b worn on the second shaft 42. At the end of the second shaft 42, an engaging portion 46 for engaging a handle for rotating the vibration isolator shaft 40 is provided.

By rotating the anti-vibration shaft 40 using the handle, the joint 30a is moved forward and backward, and the distance between the pair of joints 30a and 30b is expanded / contracted. The distance between them changes.

As shown in FIG. 3, the anti-vibration unit 43 is composed of a first member 51 connected to the first shaft 41, a second member 52 connected to the second shaft 42, a spring 55, and an anti-vibration rubber 56.

The first member 51 has a structure in which a pair of guide plates 62, 62 extend from the bottom plate 61 connected to the first shaft 41 toward the bottom plate 71. The second member 52 has a structure in which a pair of slide plates 72, 72 extend from the bottom plate 71 connected to the second shaft 42 toward the bottom plate 61. The guide plate 62 is provided with guide grooves 63 for sandwiching both end portions of the slide plate 72 at both end portions, and the tip is in contact with the bottom plate 71. As a result, the slide plate 72 moves along the direction in which the guide groove 63 extends. Further, the tip of the slide plate 72 is a free end.

The spring 55 is a coil spring in which a wire member is spirally wound, and in a state where the first tension T1 is urged, one end is connected to the central portion of the bottom plate 61 and the other end is connected to the central portion of the bottom plate 71. It is connected.

The anti-vibration rubber 56 is arranged at a target position around the spring 55. The anti-vibration rubber 56 has a natural length, one end of which is connected to the bottom plate 61 and the other end of which is connected to the bottom plate 71. That is, in this state, the pair of guide plates 62, 62 are in contact with the bottom plate 71 in a state where a compressive force having the same absolute value as the first tension T1 is applied.

The behavior of the vibration isolation unit 43 of the first embodiment will be described.

As the load loaded on the cradle 20 increases, the compressive force acting between the guide plate 62 and the bottom plate 71 gradually decreases. At this time, the spring 55 maintains the state in which the first tension T1 is urged. In this state, the distance between the bottom plate 71 and the bottom plate 61 hardly changes. That is, even when a load is loaded on the pedestal 20, the distance between the pedestal 20 and the base 10 does not change as long as the state in which the compressive force acts between the guide plate 62 and the bottom plate 71 can be maintained.

When the trailer house 100 is used in a normal state, when the maximum load expected to be generated is loaded on the pedestal 20, a state in which a compressive force acts between the guide plate 62 and the bottom plate 71 can be maintained. By setting the first tension T1, the trailer house 100 does not sway. As a result, it is possible to spend comfortably in the trailer house 100 in a normal time.

When the load loaded on the pedestal 20 is further increased due to the earthquake, the compressive force does not act between the guide plate 62 and the bottom plate 71, the contact between the guide plate 62 and the bottom plate 71 is released, and the bottom plate 71 is released. And the distance between the bottom plate 61 increases. At this time, the spring 55 and the anti-vibration rubber 56 are stretched together to cooperate with each other to maintain an equilibrium state against the load loaded on the pedestal 20.

As the earthquake continues, both the spring 55 and the anti-vibration rubber 56 repeatedly expand and contract, and the trailer house 100 vibrates accordingly.

The trailer house 100 is impacted by the initial motion of the earthquake, but the elasticity of the spring 55 and the anti-vibration rubber 56 alleviates the sudden change in the displacement speed of the trailer house 100 itself at the moment of the impact. Further, the anti-vibration rubber 56 has a property that the spring constant suddenly increases with deformation and absorbs a large impact energy, so that the impact received by the trailer house 100 can be alleviated. Further, since the anti-vibration rubber 56 has a high damping function with respect to the metal spring, the vibration caused by the seismic motion after the trailer house 100 is impacted can be damped at an early stage.

In the first embodiment, the anti-vibration rubber 56 is connected to the bottom plate 61 and the bottom plate 71 in a state of natural length, but is in a state of being urged with a slight tension or compressive force for the purpose of enhancing the vibration suppressing effect. That is, it may be connected to the bottom plate 61 and the bottom plate 71 in a state slightly shorter than the state of the natural length or in a state slightly longer.

The second embodiment of the present invention will be described with reference to FIG. Since the first embodiment and the second embodiment have substantially the same configuration except for the anti-vibration unit, the anti-vibration unit will be mainly described. The same components as those in the first embodiment are designated by the same reference numerals, and different configurations are designated by reference numerals in the 200 series.

The anti-vibration unit 243 is composed of a first member 251 connected to the first shaft 41, a second member 252 connected to the second shaft 42, and a spring 255.

The first member 251 has a structure in which a cylindrical outer cylinder 262 extends from the bottom plate 261 connected to the first shaft 41 toward the bottom plate 271. The second member 252 has a structure in which a cylindrical inner cylinder 272 is inserted into the outer cylinder 262 from the bottom plate 271 connected to the second shaft 42 toward the bottom plate 261. As a result, the inner cylinder 272 moves along the direction in which the outer cylinder 262 extends. Further, the tip of the inner cylinder 272 is a free end.

The bottom plate 261 is provided with a passage hole 256, and the tip of the outer cylinder 262 is in contact with the bottom plate 271. The passage hole 256 is a hole for allowing the air existing in the closed space 200 and the air existing in the external space 210 to pass through each other. The closed space 200 is a space defined by the first member 251 and the second member 252 in cooperation with each other, and the external space 210 is a space of an external region of the closed space 200.

In the present embodiment, the passage hole 256 is provided in the bottom plate 261 but may be provided in the bottom plate 271 or in both the bottom plate 261 and the bottom plate 271.

The spring 255 is composed of four coil springs in which a wire member is spirally wound. With the first tension T201 urged, one end is connected to the outer peripheral portion of the bottom plate 261 and the other end is connected. It is connected to the outer peripheral portion of the bottom plate 271. That is, in this state, the outer cylinder 262 is in contact with the bottom plate 271 in a state where a first compressive force having the same absolute value as the first tension T201 is applied. In order for the inner cylinder 272 to move smoothly along the extending direction of the outer cylinder 262, it is preferable that the outer cylinder 262 comes into contact with the bottom plate 271 in a state where an even compressive force is applied.

The behavior of the anti-vibration unit 243 of the second embodiment will be described. Since the behavior of the anti-vibration unit 243 has many parts in common with the behavior of the anti-vibration unit 43, the main differences will be described.

When the load loaded on the pedestal 20 is further increased due to the earthquake, the compressive force does not act between the outer cylinder 262 and the bottom plate 271, and the distance between the bottom plate 271 and the bottom plate 261 increases. At this time, the spring 255 stretches to resist the load loaded on the pedestal 20 and maintain an equilibrium state.

As the earthquake continues, the spring 255 repeatedly expands and contracts, and the trailer house 100 vibrates accordingly.

The trailer house 100 is impacted by the initial motion of the earthquake, but the elasticity of the spring 255 alleviates the sudden change in the displacement speed of the trailer house 100 itself at the moment of the impact. Further, as the inner cylinder 272 moves, the air existing in the closed space 200 and the air existing in the outer space 210 move to each other via the passage hole 256. Since the impact energy is absorbed by the air resistance when passing through the passage hole 256, the impact received by the trailer house 100 can be mitigated. Further, due to the damping effect when the air passes through the passage hole 256, the vibration caused by the seismic motion after the trailer house 100 is impacted can be damped at an early stage.

The third embodiment of the present invention will be described with reference to FIG. Since the third embodiment has substantially the same configuration as the first and second embodiments, mainly different configurations will be described. The same configurations as those of the first and second embodiments are designated by the same reference numerals, and different configurations are designated by reference numerals in the 300 series.

The spring 355 is a coil spring in which a wire member is spirally wound, and in a state where the first tension T301 is urged, one end is connected to the outer peripheral portion of the disk-shaped bottom plate 261 and the other end is disk-shaped. It is connected to the outer peripheral portion of the bottom plate 271. Further, the anti-vibration rubber 356 is connected to the outer peripheral portion of the bottom plate 261 at one end and to the outer peripheral portion of the bottom plate 271 at the other end. The springs 355 and the anti-vibration rubber 356 are alternately arranged at intervals of 90 degrees on virtual circles concentric with the centers of the circles of the bottom plates 261 and 271. Further, since the configurations of the first member 251 and the second member 252 are the same as those in the second embodiment, the description thereof will be omitted.

The anti-vibration unit 343 of the third embodiment can exert the effect of providing the passage hole 256 described in the second embodiment in addition to the anti-vibration effect of the anti-vibration rubber 56 described in the first embodiment. That is, it has a higher anti-vibration effect as compared with the first and second embodiments.

This embodiment is an example, and it goes without saying that it can be modified without departing from the technical idea of the present invention. For example, the number and arrangement of anti-vibration rubbers and springs are not restricted to the first to third embodiments. Specifically, in the first embodiment, the number of springs may be a plurality, and the number of anti-vibration rubbers may be one instead of a plurality. Further, the anti-vibration rubber may be arranged between the springs. In the second embodiment, the spring may be arranged in the closed space. In the third embodiment, the anti-vibration rubber may be arranged in the closed space.

The support device of the present invention not only supports a structure, but can also be used as a pantograph-type jack. When used as a jack, it has great industrial applicability because the extension of the spring can suppress an excessive rise of the supporting object.

1: Support device 10: Base 11a, 11b: Lower link 20: Cradle 21a, 21b: Upper link 30a, 30b: Joint 40: Anti-vibration shaft 43, 243, 343: Anti-vibration unit 51, 251: First member 52, 252: Second member 56, 356: Anti-vibration rubber 200: Closed space 210: External space 256: Pass holes T1, T201, T301: Specific tensile force

Claims (6)

A pair of lower links connected to the base,
A pair of upper links connected to the cradle and
A pair of lower links and a pair of joints connecting the pair of upper links,
A vibration-proof shaft having a vibration-proof unit bridged between the pair of joints is provided.
The anti-vibration unit has a first member, a second member in contact with the first member, one end connected to the first member in a state where a specific tensile force is applied, and the other end is the second member. Including springs to connect to,
When a tensile force exceeding the specific tensile force is applied to the anti-vibration shaft, the contact between the first member and the second member is released, the distance between the pair of joints increases, and the base A support device characterized in that the distance between the pedestal and the pedestal is reduced. The support device according to claim 1, wherein the anti-vibration unit includes the anti-vibration rubber connected to the first member and the second member. The support device according to claim 1 or 2, wherein the first member and the second member cooperate to define a closed space. The support device according to claim 3, wherein the first member and / or the second member is provided with a passage hole through which air existing in the closed space and air existing in the external space can pass through each other. The specific tensile force applied to the spring exceeds the tensile force normally applied to the anti-vibration shaft and does not exceed the tensile force applied to the anti-vibration shaft during an earthquake. The support device according to any one of 1 to 4. The support device according to any one of claims 1 to 5, wherein the distance between the base and the pedestal changes by rotating the anti-vibration shaft.

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