JP2000104407A - Column device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a column device capable of easily adjusting the length of a telescoping member so as to increase workability also in a site where intensity of illumination is not sufficient and also adjusting the length of the telescoping member so as to facilitate the handling also in a site where a power supply cannot be assured. SOLUTION: When the length of one telescoping member 20 is adjusted, a locking pin 32 is fitted to a restricting and releasing groove part 23, and an inner shaft member 31 is projected or recessed axially relative to an outer shaft member 21 according to a clearance to be assured. Then, when the inner shaft member 31 is rotated axially relative to the outer shaft member 21, the locking pin 32 is fitted into a specified restricting groove part 24 so as to restrict the locking pin 21 unmovably along the axial direction in order to hold the other telescoping member 20 to a desired length. Next, the length of the other telescoping member 40 operated by power is adjusted so that the column device 10 is provided, as a support bar, between a pair of objects to be supported.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column device interposed in a gap between a pair of supported objects so as to maintain the gap at a predetermined length.

[0002]

2. Description of the Related Art As a conventional support device, for example, a pair of expandable members are connected, one expandable member is formed of an air cylinder, and the other expandable member is capable of extending and retracting an inner shaft in an outer cylinder in an axial direction. In some cases, a plurality of through-holes are continuously provided in the outer cylinder and the inner shaft, and a pin member is inserted into each of the through-holes.

[0003] The length of one of the telescopic members is adjusted by adjusting the pressure of the air cylinder with a compressor.
Further, by adjusting the position of the through hole into which the pin member is inserted, the amount of protrusion of the inner shaft is adjusted, and the length of the other extensible member is adjusted.

[0004] Such a support device adjusts each telescopic member to a desired length in accordance with an accident site such as a collapse of a house or a vehicle accident to support a collapsed portion of a wall or a building. It is used to secure a space for rescue work by stabilizing a fallen vehicle.

[0005]

However, in such a conventional support device, it is difficult to align the through hole of the outer cylinder with the through hole of the inner shaft, and it takes a considerable amount of time to insert the pin member. However, the adjustment of the length of the elastic member tends to be delayed, which causes a reduction in workability. There was a problem that it was further delayed and difficult to use.

Further, at the accident site, the compressor cannot be operated due to the inability to secure the power supply, or the compressor cannot be brought in due to the small work site. There is also a problem that the usability is not good because one of the elastic members does not function.

The present invention has been made in view of such a conventional problem, and the length of the elastic member can be easily adjusted even in a site where the illuminance is insufficient, so that the workability can be improved. Further, it is another object of the present invention to provide a column device capable of adjusting the length of the expansion and contraction member even in a site where a power supply cannot be secured, thereby improving usability.

[0008]

The gist of the present invention for achieving the above object lies in the following inventions. [1] A column device interposed in a gap between a pair of supported objects to secure the gap, and each has a shaft-shaped joint member (50) and a pair of elastic members (2
0, 40), wherein the pair of telescoping members (20, 40) are axially connected via the joint member (50) and not through the joint member (50). One of the pair of telescopic members (20, 40) has an outer shaft member (21) and an inner shaft member (31), and the inner shaft member (31).
Is fitted to the outer shaft member (21) so as to be able to protrude and retract in the axial direction. One of the outer shaft member (21) and the inner shaft member (31) has a locking pin (32). The other of the outer shaft member (21) and the inner shaft member (31) has a fitting groove (22), and the fitting groove (22) has a constraint release groove portion (23) and a constraint groove portion ( 24), wherein the restraining release groove (23) is fitted with the locking pin (22) so as to be movable in the axial direction, and the restraining groove (24).
Are continuously provided at predetermined intervals along the axial direction, and each of the constraint grooves (24) is provided with the constraint release groove (2).
3), and the restraint release groove (2)
3) The supporting device, wherein the locking pin (32) fitted into each of the restraining grooves (24) from (3) is immovably restrained along the axial direction.

[2] The pair of telescopic members (20, 40)
The other of (1) is constituted by a hydraulic cylinder in which a piston rod (41) is protruded and retracted in the axial direction by hydraulic pressure.

[3] The pair of elastic members (20, 40)
The other is an adjustment bolt (141) and an adjustment nut (1).
42), wherein the adjusting bolt (141) is screwed into the adjusting nut (142) so as to be able to protrude and retract in the axial direction of the bolt.

[4] An end of the telescopic member (20, 40) is configured such that an attachment (60) is detachable, and the attachment (60) has a pressure contact member (61); The pressure contact member (61) is configured to press against the supported object side so that a direction perpendicular to the pressure contact surface (62) to be pressed against can be tilted with respect to the axial direction. 1].

[5] The pair of telescopic members (20, 40)
The other is provided with two types, one telescopic member,
The piston rod (41) is constituted by a hydraulic cylinder in which the piston rod (41) is protruded and retracted in the axial direction by hydraulic pressure. The other telescopic member has an adjustment bolt (141) and an adjustment nut (142), 141) is screwed onto the adjusting nut (142) so as to be able to protrude and retract in the axial direction of the bolt. The support device according to item [1], wherein the support device is set to have the same length as the entire length.

[6] The pair of telescopic members (20, 40)
Further, when the joint member (50) is connected in the axial direction, the joint member (50) resiliently engages from a direction perpendicular to the axial direction and restrains the joint members from falling out of each other [1]. A support device according to item 1.

Next, the operation of the invention described in each of the above items will be described. In one configuration of the present invention, whether to use the joint member (50) is roughly determined according to the gap to be secured. When the joint member (50) is used, it is indirectly connected in the axial direction via the joint member (50), and when the joint member (50) is not used, it is directly connected without the joint member (50). A pair of elastic members (20, 40) are connected in the axial direction.

Next, the length of one of the elastic members (20) is adjusted according to the gap to be secured. To adjust the length of one of the telescopic members (20), the locking pin (32) is inserted into the fitting groove (2).
2) into the restraint release groove (23), and
2) is movable along the axial direction. This allows the inner shaft member (31) to protrude and retract in the axial direction with respect to the outer shaft member (21).
Stretch 0) to the desired length.

Next, the locking pin (32) is inserted into the fitting groove (22).
The locking pin (32) is immovably restrained along the axial direction. Thereby, the elastic members (20, 40) are maintained at a desired length. At this time,
The overall length of the support device will approximately match the gap to be secured. Next, for example, the other telescopic member (4
By adjusting the length of 0), the supporting device can be supported by interposing the support device like a stick in the gap between the pair of supporting objects.

In another configuration of the present invention, the length of one of the expansion and contraction members (20) is adjusted to substantially match the gap to be secured. Thereafter, the length of the other elastic member (40) is adjusted. The length adjustment of the other telescopic member (40) is performed by, for example, using a manual hydraulic pump to cause the piston rod to protrude and retract in the axial direction by hydraulic pressure.

The piston rod protrudes by a desired amount, the other extensible member (40) is held at a desired length, and the column device is interposed like a stick in a gap between the pair of supported objects. The object to be supported can be supported. For example, since a manual hydraulic pump is used, the length of the expansion and contraction member can be adjusted even at a site where power cannot be secured, thereby improving usability.

Further, in another configuration of the present invention, the length of one of the expansion and contraction members (20) is adjusted to substantially match the gap to be secured. Thereafter, the length of the other elastic member (40) is adjusted. The length adjustment of the other elastic member (40) is performed by turning the adjustment bolt (141) around the bolt axis. When the adjusting bolt (141) is turned, the adjusting bolt (141) is screwed into the adjusting nut (142), and the adjusting bolt (141) protrudes and retracts in the bolt axis direction.

As a result, the adjusting bolt (141) can be protruded by a desired amount, the other extensible member (40) is held at a desired length, and the support device is inserted into the gap between the pair of supported objects. The object to be supported can be supported by intervening like a paddle.

Attachments (6) adapted to the surface of the object to be supported are provided at the ends of the elastic members (20, 40).
0) is attached.

If the object to be supported does not form a surface perpendicular to the axial direction of the support device, the direction perpendicular to the pressing surface (62) of the pressing member (61) is the axial direction. An attachment (60) configured to be tiltable with respect to is used.

When such an attachment (60) is brought into contact with a supported member, the press contact member (61) is tilted in the axial direction so that the press contact surface (62) is along the surface to be supported. As a result, the contact surface between the press contact surface (62) and the surface of the supported object is widened, the attachment (60) is less likely to slip on the supported object, and the support device stably supports the supported object. be able to.

Further, according to another configuration of the present invention, there is a case where the support device is configured using one expandable member (40), and a case where the support device is configured using another expandable member (40). Since the maximum values of the use ranges of the both support devices are the same, both are interchangeable and can be used interchangeably when securing the same gap.

Further, in another configuration of the present invention, a pair of elastic members (20, 40) and a joint member (50)
Are connected in the axial direction, they are resiliently engaged from a direction perpendicular to the axial direction, and cannot be mutually dropped. Since the supporting device (10) is held in the connected state by a simple operation, the connecting operation does not take much trouble, and the connecting workability is improved.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a first embodiment of the present invention. The strut device 10 according to the present invention intervenes in a gap between a pair of supported objects and secures the gap, and includes a pair of elastic members 20 and 40 and a joint member 50.

The object to be supported by the support device 10 is a building, a wall, a vehicle, or the like. Each of the pair of elastic members 20 and 40 and the joint member 50 is formed in a shaft shape.

One extension member 20 has an outer shaft member 21 and an inner shaft member 31, and the inner shaft member 31 is
1 is fitted so as to adjust the amount of protrusion that protrudes in the axial direction. The maximum projection amount (maximum stroke) ST of the inner shaft member 31 is 200 mm (see FIG. 2).

The other extensible member 40 is a hydraulic cylinder, and the piston rod 41 is supported by a hydraulic pressure so as to be able to protrude and retract in the axial direction with respect to the cylinder member 42. Maximum projection amount (maximum stroke) ST of the piston rod 41
Is 150 mm (see FIG. 2).

The joint member 50 is connected to one of the elastic members 2.
It is a relay member interposed between 0 and the other elastic member 40. A convex portion 55 is formed at one end of the joint member 50, and a concave portion 56 is formed at the other end of the joint member 50.

Similarly, a protrusion 25 is formed at the end of the outer shaft member 21 of one of the elastic members 20, and a recess 46 is formed at the end of the cylinder member 42 of the other elastic member 40. I have. The convex portion 25 of the outer shaft member 21 is formed in substantially the same shape as the convex portion 55 of the joint member 50, and the concave portion 46 of the cylinder member 42 is
It is formed in almost the same shape as.

The convex portion 25 of the outer shaft member 21 of one of the elastic members 20 can be fitted into the concave portion 56 of the joint member 50.
Further, it is configured to be able to fit into the concave portion 56 of the cylinder member 42 of the other elastic member 40. That is, the pair of elastic members 20 and 40 are configured to be connectable via the joint member 50 and not via the joint member 50.

A circumferential groove (not shown) is formed in each of the convex portions 25 and 55. Each of the concave portions 46 and 56 is provided with a ball member (not shown) projecting inwardly and resiliently. Member 20, 4
0 and the joint member 50 are easily and irremovably connected.

When the pair of elastic members 20 and 40 are connected, or when the pair of elastic members 20 and 40 and the joint member 50 are connected, the end faces of the pair of elastic members 20 and 40 or the pair of elastic members 20 and 40 are connected. The end faces of the joint member 40 and the joint member 50 are butted, and a load applied to the support device 10 is applied to the butted end faces.

The outer shaft member 21 of one of the elastic members 20 has
A fitting groove 22 is formed. Also, one of the elastic members 2
A locking pin 32 is implanted in the inner shaft member 31 of the zero. The fitting groove 22 includes a restraint releasing groove 23 and a restraining groove 24.

The constraint release groove 23 is an elongated groove extending in the axial direction itself, and the locking pin 32 is fitted movably in the axial direction.

The four restraining grooves 24 are provided at predetermined intervals (67 mm pitch) in the axial direction. The number of the constraining grooves 24 is not limited to four, but may be three to roughen the pitch and increase the strength, or may be five or more to fine the pitch and improve the workability of the length adjustment. .

Each of the restraining grooves 24 is pushed in the circumferential direction of the cylinder from the restraining releasing groove 23 which is an elongated groove, and the locking pin 32 fitted in each restraining groove 24 from the restraining releasing groove 23.
Are immovably restrained along the axial direction.

The ends of the pair of telescoping members 20 and 40 may be directly abutted against the object to be supported, but the attachment 60 may be configured to be detachable from the axial direction. When the attachment 60 is used, a circumferential groove (not shown) is formed on one of the protrusions of the attachment 60 and one end of the pair of elastic members 20 and 40, and the attachment 60 and the pair of elastic members 20 and 40 are formed. A ball member (not shown) is provided in the other concave portion with the end portion, and the pair of elastic members 20 and 40 and the attachment 60 are connected so that they cannot easily come off.

As shown in FIG. 3, the attachment 60
Has a pressing member 61 that presses against the supported object side, and a concave member 65 into which the convex portion 45 of the piston rod 41 of the other elastic member 40 fits. The pressing member 61 is configured via a ball joint (not shown) so that the direction perpendicular to the pressing surface 62 to be pressed against can be tilted with respect to the axial direction. The press contact surface 62 has a large number of pyramidal anti-slip projections.

Next, the operation will be described. This support device 10
It is used to secure a gap in the vertical direction as shown in FIG. 4 or to secure a gap in the horizontal direction as shown in FIG.

An attachment 60 is attached to each end of the pair of elastic members 20 and 40, and a batten (retaining plate) having a rectangular cross section is fixed to the attachment 60 with nails.

The mode of use of the pair of elastic members 20 and 40 and the joint member 50 is determined according to the size of the gap to be ensured (gap considering the thickness of the batten). FIG.
Indicates the range of use of the various column devices 10 according to the first embodiment. As shown in FIGS. 2A to 2D, when the gap to be secured is narrow, the other elastic member 40 is used alone. Its use range is 450-600 mm. When the gap to be secured is relatively narrow, the other expandable member 40 and the joint member 50 are connected and used. Its use range is 900 to 1050 mm.

Further, when the gap to be secured is relatively wide, the pair of elastic members 20 and 40 are directly connected and used. Its use range is 800 to 1150 mm. Further, when the gap to be secured is very wide, the pair of elastic members 20 and 40 are used by being indirectly connected via the joint member 50. Its use range is 1250
1600 mm.

In FIGS. 4 and 5, a pair of telescopic members 20 and 40 are directly connected without using the joint member 50. However, when the gap is wide, the pair of telescopic members 20 and 40 are used. Members 20 and 40 are joint members 50
Use indirectly connected via.

When the usage of the pair of telescopic members 20, 40 and the joint member 50 is determined, the pair of telescopic members 20, 40 or the joint member 50 is connected in the axial direction. At this time, the ball member provided in the concave portion 46 or the concave portion 56 is resiliently fitted into the circumferential groove formed in the convex portion 25 or the convex portion 55, and the pair of elastic members 20 and 40 is provided.
Alternatively, the joint member 50 cannot easily come off.

Next, the length of one of the elastic members 20 is adjusted according to the gap to be secured (see FIGS. 5B and 5C). To adjust the length of the one elastic member 20, first, the locking pin 32 is fitted into the restraint releasing groove 23 of the fitting groove 22, and the locking pin 32 is movable in the axial direction. Makes it possible to protrude and retract in the axial direction with respect to the outer shaft member 21. Next, according to the gap to be secured,
The inner shaft member 31 is expanded and contracted to a desired length.

Next, when the inner shaft member 31 is rotated around the axis with respect to the outer shaft member 21, the locking pin 32 is fitted into the predetermined restraining groove 24, and the locking pin 32 cannot be moved in the axial direction. To be restrained. Thereby, one elastic member 20 is held at a desired length. At this time, the strut device 10 sets the maximum protrusion amount ST of the piston rod 41 of the other elastic member 40.
(150 mm), leaving a length substantially matching the gap to be secured.

Next, the length of the other elastic member 40 is adjusted (see FIG. 5D). Since a hand-operated hydraulic pump that is simple to transport is used, no power supply is required. When the hydraulic pressure in the cylinder member 42 is increased to a predetermined pressure by operating the manual hydraulic pump, the piston rod 41 projects by a desired amount, and
0 is maintained at a desired length, and the support device 10 can support the supported object by interposing the supporting device 10 like a stick in a gap between the pair of supported objects.

At this time, if the object to be supported (a batten in FIGS. 4 and 5) does not form a plane that is perpendicular to the axial direction of the support device 10, the pressing member 61 The direction perpendicular to the pressing surface 62 can be tilted with respect to the axial direction, and the pressing surface 62 follows the surface to be supported (see FIG. 4E and FIG. 5A).

As a result, the contact surface between the press contact surface 62 and the surface of the supported object is widened, the attachment 60 is less likely to slip with respect to the supported object, and the attachment 60 and the batten are fixed with nails. Because of the connection, the support device 10 can stably support the supported object.

FIGS. 10 and 11 show a second embodiment of the present invention. In the second embodiment, the configuration of the other expandable member 40 according to the first embodiment is changed, and the other configuration is the same as the configuration of the first embodiment. Hereinafter, the same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

In the second embodiment, the elastic member 40 is
It is a so-called screw cylinder, and has an adjustment bolt 141 and an adjustment nut 142. In addition, adjustment bolt 1
A lock nut 143 for preventing loosening is screwed into 41.

The adjusting bolt 141 is screwed to the adjusting nut 142 so as to be able to protrude and retract in the axial direction of the bolt. Adjustment bolt 1
41 is the maximum protrusion amount (maximum stroke) in the bolt axis direction
ST is set to 50 mm. FIG. 11 shows the range of use of various support devices 10 according to the second embodiment. As shown in FIGS. 11A to 11D, the elastic member 40
When used alone, the working range is 550-600mm
And the range of use when connecting and using the elastic member 40 and the joint member 50 is 1000 to 1050 m
m, the range of use when connecting and using the pair of elastic members 20 and 40 is 900 to 1150 mm, and the pair of elastic members 20 and 40 are indirectly connected via the joint member 50 and used. Use range is 1350
１1600 mm.

That is, in the range of use of various support devices 10, in the case of the second embodiment, the minimum value is larger by 100 mm and the maximum value is the same as in the first embodiment. This is because the maximum protrusion amount ST of the adjustment bolt 141 is
(50 mm) is 100 mm shorter than the maximum protrusion amount ST (150 mm) of the piston rod 41 according to the first embodiment, but the telescopic member 40 according to the second embodiment is longer by 100 mm than that. Is attributed to

The support device 10 according to the second embodiment is
The support device 10 according to the first embodiment is used before or after a gap is secured.

The range of use of the various strut devices 10 according to the second embodiment is the same as the range of use of the various strut devices 10 according to the first embodiment at the maximum value.
Both are compatible.

For example, after securing a gap with the relatively expensive column apparatus 10 according to the first embodiment, which exerts a high supporting force by using hydraulic pressure, the vicinity of the column apparatus 10 according to the first embodiment is secured. A relatively inexpensive 2
It is conceivable to insert the support device 10 according to the embodiment to secure a gap, and then remove the support device 10 according to the first embodiment (see FIGS. 5D and 5E). .

By performing such operations one after another, the support device 1 according to the second embodiment is provided in the gap to be secured.
Many zeros are interposed, and the cost for securing the gap can be reduced as a whole. This is effective when the support device 10 is discarded without being collected from the site.

When the device is used after a gap is secured, as in the first embodiment, the length of one of the extensible members 20 is adjusted to substantially match the gap to be secured, and then the other is extended. The length of the member 40 is adjusted.

When the support device 10 according to the second embodiment is composed of components, the components of the support device 10 according to the first embodiment are the same as the components of the support device 10 except for the extensible member 40. Therefore, by referring to the components of the support device 10 according to the first embodiment, the support device 10 corresponding to the support device 10 according to the first embodiment can be easily configured.

Adjustment of the length of the other extensible member 40 is performed by turning the adjustment nut 142 around the bolt axis by the operation rod 144 inserted into the prepared hole of the adjustment nut 142. When the adjustment nut 142 is turned around the bolt axis, the adjustment nut 1
Then, the adjusting bolt 141 is protruded and retracted in the bolt axis direction.

When the adjustment bolt 141 projects by a desired amount, the lock nut 143 is screwed to hold the extendable members 20 and 40 at a desired length. Thus, the support device 10 can be supported by interposing the support device 10 in the gap between the pair of supported objects like a stick.

In the above embodiment, the inner shaft member 31 is fitted to the outer shaft member 21 so as to adjust the amount of protrusion in the axial direction. That is, the outer shaft member 21 may be configured to protrude in the axial direction with respect to the inner shaft member 31. Further, the piston rod 41 is connected to the joint member 50 or one of the telescopic members 2.
0, and the cylinder member 42 may be configured to protrude.

Further, if the axial direction of the support device 10 corresponds to the direction perpendicular to the surface to be supported, the attachment 6
It is not necessary that the pressing surface 62 of the pressing member 61 tilts like 0, and for example, as shown in FIGS. 6 and 7, a pressing member 161 having a U-shaped cross section and a concave member 165 are welded. Alternatively, as shown in FIG. 8, the pressing member 261 and the concave member 265 may be formed integrally. As shown in FIG. 9, the pressing member 361 and the concave member 36
5 may be integrally formed, a groove having a V-shaped cross section may be formed in the press contact member 361, and the pressing member 361 may be fitted to a batten such as a log having a circular cross section.

Further, each of the concave members 165, 265, 365
Are provided with screw holes 166, 266, and 366.
Lock screws (not shown) are screwed into the screw holes 166, 266, 366, and the lock screws are
The pair of elastic members 20 and 40 or the male joint or the like fitted into the 5,365 are fixed so that they cannot be pulled out.

[0067]

As described above, in one configuration of the present invention, when adjusting the length of one of the expansion and contraction members, the locking pin is fitted into the restraint releasing groove so as to match the clearance to be secured. Then, after the inner shaft member is protruded and retracted in the axial direction with respect to the outer shaft member, when the inner shaft member is turned around the axis with respect to the outer shaft member, the locking pin is fitted into a predetermined restraining groove, and the locking The pin is immovably restrained along the axial direction, the telescoping member is held at a desired length, and then, for example, by adjusting the length of the other telescoping member operated by power, the strut device becomes a pair of struts. Since it is interposed like a stick in the gap between the supported objects, the length of the elastic member can be easily adjusted, and workability can be improved.

In another configuration of the present invention, when the length of one of the extensible members is adjusted to substantially match the gap to be secured, and then the other extensible member is actuated, the piston rod protrudes by a desired amount. The elastic member is held at a desired length,
Since the support device comes to be interposed like a stick in the gap between the pair of supported objects, the supported object can be supported. Also, for example, using a manual hydraulic pump,
If the piston rod is raised and lowered by hydraulic pressure, the length of the telescopic member can be adjusted even at sites where power cannot be secured,
Usability can be improved.

Further, in another configuration of the present invention, when the length of one of the extensible members is adjusted to substantially match the gap to be secured, and then the adjusting bolt is turned, the adjusting bolt is screwed into the adjusting nut. So that the adjusting bolt protrudes by a desired amount, the expansion and contraction member is held at a desired length, and the strut device is interposed like a stick in the gap between the pair of supported objects. Therefore, the supported object can be supported.

Further, according to another configuration of the present invention, when the object to be supported does not form a plane perpendicular to the axial direction of the support device, the press-contact member tilts in the axial direction. Then, the press-contact surface is along the surface of the supported object, and the surface where the press-contact surface and the surface of the supported object are in contact with each other is widened. Can stably support the supported object.

Further, according to another configuration of the present invention, there are two types of column devices, one for a column device using one telescopic member and the other for a column device using another telescopic member. Since the maximum values of the use ranges are the same, they are interchangeable and can be used interchangeably when securing the same gap.

Further, according to another configuration of the present invention, when the pair of elastic members and the joint member are connected in the axial direction, they are resiliently engaged from each other in a direction perpendicular to the axial direction so as to be mutually connected. Since the column device cannot be dropped off, the supporting device is held in a connected state by a simple operation, so that the connecting operation does not take much trouble and the connecting workability is improved.

[Brief description of the drawings]

FIG. 1 is a front view of a column device according to a first embodiment of the present invention.

FIG. 2 is a view showing a use state of the column device according to the first embodiment of the present invention.

FIG. 3 is a front view of the attachment according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram illustrating a use state of the column device according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram illustrating a use state of the column device according to the first embodiment of the present invention.

FIG. 6 is a front view of another attachment according to the first embodiment of the present invention.

FIG. 7 is a plan view of another attachment according to the first embodiment of the present invention.

FIG. 8 is a front view of another attachment according to the first embodiment of the present invention.

FIG. 9 is a front view of another attachment according to the first embodiment of the present invention.

FIG. 10 is a front view of a column device according to a second embodiment of the present invention.

FIG. 11 is a diagram illustrating a use state of a column device according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Strut device 20, 40 ... A pair of elastic members 21 ... Outer shaft member 22 ... Fitting groove 23 ... Restriction release groove 24 ... Restriction groove 25 ... Convex part 31 ... Inner shaft member 32 ... Locking pin 41 ... Piston rod 42 ... Cylinder member 45 ... Convex part 46 ... Concave part 50 ... Joint member 55 ... Convex part 56 ... Concave part 60 ... Attachment 61 ... Press-contact member 62 ... Press-contact surface 65 ... Concave member 141 ... Adjustment bolt 142 ... Adjustment nut 143 ... Lock nut 161, 261, 361: press contact members 165, 265, 365: concave members 166, 266, 366: screw holes

Claims (6)

[Claims] An intervening gap between a pair of supported objects,
In a support device that ensures the gap, each has a shaft-shaped joint member and a pair of elastic members, the pair of elastic members, via the joint member,
And, without interposing the joint member, it is configured to be connectable in the axial direction, one of the pair of expandable members has an outer shaft member and an inner shaft member, the inner shaft member, One of the outer shaft member or the inner shaft member has a locking pin, and the other of the outer shaft member or the inner shaft member is A fitting groove, wherein the fitting groove comprises a restraint releasing groove and a restraining groove, wherein the restraining pin is fitted so that the locking pin is movable in an axial direction; A plurality of grooves are continuously provided at predetermined intervals along the axial direction, and each of the restraining grooves is continuous with the restraint releasing groove, and the engaging member is fitted into each restraining groove from the restraining releasing groove. The locking pin is restrained immovably along the axial direction. Pillar system. 2. The support device according to claim 1, wherein the other of the pair of telescoping members is constituted by a hydraulic cylinder in which a piston rod is protruded and retracted in an axial direction by hydraulic pressure. 3. The other of the pair of telescoping members has an adjustment bolt and an adjustment nut, and the adjustment bolt is screwed to the adjustment nut so as to be able to protrude and retract in a bolt axial direction. Item 2. The support device according to Item 1. 4. An end of the elastic member is configured such that an attachment is detachable, the attachment has a pressing member, and the pressing member is pressed against the supported object side, The support device according to claim 1, wherein a vertical direction of the press-contact surface to be pressed is tiltable with respect to the axial direction. 5. The other of the pair of telescopic members is provided in two types, and one telescopic member is constituted by a hydraulic cylinder in which a piston rod protrudes and retracts in the axial direction by hydraulic pressure. The two telescopic members have an adjusting bolt and an adjusting nut, and the adjusting bolt is screwed to the adjusting nut so as to be able to protrude and retract in a bolt axis direction. The support device according to claim 1, wherein the length of the adjustment bolt is set to be the same as the total length when the adjustment bolt protrudes to the maximum. 6. The pair of telescopic members and the joint member are resiliently engaged from a direction perpendicular to the axial direction and are restrained from falling out of each other when connected in the axial direction. The support device according to claim 1, wherein: