JP2568155B2 - support - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support applied to support heavy objects such as slabs of concrete buildings, and more particularly to a height adjustable support.

[0002]

2. Description of the Related Art Generally, when forming a slab of a concrete building, for example, a plurality of supports are used as means for supporting a slab form. That is, in forming the slab, first, a plurality of supports are arranged at predetermined positions via the steady pipes. After the height of the upper end of each support is adjusted, a square pipe (end-wide angle) that is large is provided at each upper end. A round pipe, which is a joist, is assembled orthogonally to the square pipe, and a veneer is arranged on the round pipe, whereby a formwork (slab frame) is assembled at the upper end of each support. Next, the slab is formed by driving concrete according to the formwork. Said supports are used to hold the formwork at the correct level and to support the weight of the poured concrete and play a very important role in the formation of the slab.

Therefore, a typical example of the conventional support is shown in FIG.
And FIG. 14 will be described. The support 100 includes a support pipe 104 having a base 102 at the lower end, a support ring 106, an insertion pipe 110 having a receiving plate 108 at the upper end, and a support pin 112. A male screw 114 is formed on the upper end of the support pipe 104. A long hole 116 extending in the axial direction is formed in the male thread portion of the support pipe 104 on which the male thread 114 is formed. The elongated holes 116 are formed in the male screw portion so as to penetrate through the opposing outer peripheral surfaces at 180 ° intervals in the circumferential direction. A female screw (not shown) is formed on the inner peripheral portion of the support ring 106, and a rotary operation handle 118 is mounted on the outer peripheral portion. The rotation operation handle 118 is
Horizontal position (solid line position in FIG. 13) and vertical position (2 in FIG. 13)
It is rotatably supported so that it can be moved to and from the position (dotted line position). The support ring 106 is the support pipe 104.
It is possible to move in the axial direction by being engaged with the male screw 114 of FIG. The support pin 112 is detachably connected to the outer peripheral portion of the support ring 106 by a chain 120. That is, one end of the chain 120 is connected to the head of the support pin 112, and the other end is hooked on the screw 107 provided on the outer peripheral portion of the support ring 106.

The insertion pipe 110 is a support pipe 104.
On the other hand, a plurality of pin holes 122 having the same diameter are formed while being inserted movably in the axial direction of the pin holes 122 at intervals in the axial direction. Each of the pin holes 122 is formed in the insertion pipe 110 so as to penetrate through the outer peripheral surfaces facing each other at an interval of 180 ° in the circumferential direction with the same axis line. The width of the elongated hole 116 is larger than the diameter of the pin hole 122. The support pin 112 has a long hole 116 and a pin hole 1.
Its diameter is defined so that it can be freely inserted into 22. When the insertion pipe 110 is inserted into the support pipe 104, when the support pin 112 is inserted into one of the pin holes 122 of the insertion pipe 110 through the elongated hole 116 of the support pipe 104, both ends thereof are elongated holes 116. Has a length so as to project outward in the radial direction of the support pipe 104. Further, in the same state, the insertion pipe 110 is configured such that both ends of the support pin 112 are placed on the upper end surface of the support ring 106 so that the height of the insertion pipe 110 is adjustable with respect to the support pipe 104. .

For example, the support 100 is used as a means for supporting a slab formwork of a concrete building as follows. Although a plurality of supports 100 are used, one support 100 will be described here for convenience of description. The support pipe 104 is placed on a floor (not shown) via the base 102. Male screw 1 of support pipe 104
A support ring 106 is previously engaged with 14.
The insertion pipe 110 is inserted from the upper end of the support pipe 104. At a position where the height of the insertion pipe 110 from the floor of the receiving plate 108 is roughly aligned with a predetermined height, one circumferential position of the pin hole 122 is aligned with the long hole 116 of the support pipe 104. Yes (to align).
Next, the support pin 112 is attached to the elongated hole 116 and the pin hole 122.
Both ends of the support pipe 10 from the long holes 116.
Position so as to project outward in the radial direction of 4. When the insertion pipe 110 is lowered in this state, both ends of the support pin 112 are placed on the upper end surface of the support ring 106. As a result, the insertion pipe 110 is stably supported by the support pipe 104 via the support pin 112 and the support ring 106 with the lower part thereof being inserted into the support pipe 104. The other end of the chain 120 is the support ring 10
It is removed from the screw 107 of No. 6 and wound around the insertion pipe 110 located above the support pin 112 (see FIG. 14). By operating the rotation operation handle 118,
The support ring 106 is moved in the axial direction (vertical direction) with respect to the support pipe 104. By this movement, the support pin 112 is moved along the elongated hole 116, so that the insertion pipe 110 and the receiving plate 108 are also moved at the same time. Thereby, the height of the insertion pipe 110, that is, the height of the receiving plate 108 is adjusted to a predetermined height. Backing plate 108
Attach the slab formwork to the upper part of the and pour the concrete (neither is shown).

The support 100 must be removed from the slab formwork after a predetermined period of time has elapsed since the concrete was poured. By operating the rotating operation handle 118, the insertion pipe 110 is moved downward. As a result, the receiving plate 1
08 is separated downward from the slab formwork. After removing the slab form, with the insertion pipe 110 slightly raised with respect to the support pipe 104, the support pin 112 is inserted into the pin hole 1
22 and the slot 116. Plug pipe 110
By lowering it as it is, it is deeply inserted into the support pipe 104 to be in a housed state.

[0007]

The conventional support 100 constructed and used as described above has the following problems to be solved . In a state in which the concrete slab formwork has been driven, the support 100, a heavy load by concrete acts. More specifically, this heavy load acts on the upper end surface of the support ring 106 via both ends of the receiving plate 108, the insertion pipe 110 and the support pin 112. In this way, in order to move the insertion pipe 110 downward while the heavy load is applied to the support 100, the rotation operation handle 118 must be operated to rotate the support ring 106. However, as described above, since a heavy load is directly applied to the upper end surface of the support ring 106 via both ends of the support pin 112, it is necessary to overcome a large friction force in order to rotate the support ring 106. is there. Therefore, actually, it becomes extremely difficult to rotate the support ring 106 by hand. In many cases, it is impossible to rotate by hand, and in this case, a method of hitting the rotary operation handle 118 with a hammer to rotate it is often used. As a result, a problem such as damage or breakage of the rotary operation handle 118 will occur .

[0008] On the other hand, in Japanese Unexamined Patent Publication No. 37-12628 Utility Model
Is obtained by rotating the grip piece 2 attached to the upper end of the base tube 1.
The screw tube 3 threaded through this is moved up and down to engage with the screw tube 3.
The supporting tube 4 is made to expand and contract with respect to the base tube 1.
In the pipe support, an appropriate number of
The concave hole 5 is provided, and the concave hole 5 is formed on the inner peripheral surface of the grip 2 fitted in the concave hole 5.
The opposing annular groove 6 is provided and communicated with the outside through the through hole 7.
Through the through hole 7, straddling the annular groove 6 and the concave hole 5 and rolling balls 8
For construction in which the through hole 7 is closed by a removable lid piece 9
Disclosed is a structure of a locking device of a grip in a pipe support.
(The numbers are the numbers attached to the drawings in the same publication.
). With this structure, the grip 2 is rotated.
It is intended that the
The rolled ball 8 that has been housed is projected into the ring groove 6 of the small piece 2 to
Since it is designed to prevent vertical movement,
Since the ball 8 also has a rockball-like function,
It is difficult to exert a sufficiently reliable thrust bearing function.
Difficulty, excessive stress concentration occurs, wear resistance and
It has a big problem in durability. Therefore, for heavy loads
It is said that it is difficult to easily rotate the gripping piece 2.
I have no choice. Further, the grip 2 is integrally melted at the upper end of the base pipe 1.
The rolls stored in the concave holes 5 provided in the reinforcing ring member
It is supported via a ball 8 and the through hole 7 is closed by a lid piece 9.
Since it is supported on the upper end of the base tube 1 by and,
The ball 8 is not a unit. As a result, assembly
It is difficult to handle such as transportation and storage. Furthermore, the base pipe
It is difficult to attach / detach to / from 1 and therefore maintenance
Nonces are also difficult. Also, this pipe support is
Since a considerably large screw tube 3 engaged with 2 is indispensable,
Ip support has a large number of parts and a complicated configuration.
It will be rough and the production cost will be high.

[0009 ] The main object of the present invention is that the rotation operation of the support ring can be performed extremely easily even under a heavy load , and the structure is simple and the manufacturing cost is low.
There is to provide an improved support.

[0010 ]

Means for Solving the Problems] According to the inventions, the support pipe means formed with external threads at its upper end, is engaged through the female screw on the male screw of the female screw is formed and the support pipe means By means of which the support ring means can be moved in the axial direction, the insertion pipe means which is movably inserted into the support pipe means and has a plurality of pin holes formed at intervals in the axial direction, and the pin hole. It is inserted into the
A that support pin, the said support ring means is mounted is rotated operating handle means, it male of the support pipe means
A long hole extending in the axial direction is formed in the male screw part where the ridge is formed.
Formed, the bayonet pipe means is connected to the support pipe means.
In the inserted state, the support pin is connected to the support pipe.
Through the elongated hole of the means of the pin hole of the bayonet pipe means
Both ends project from the slot when inserted into one
The length of the insertion pipe means and the support pipe is
Both ends of the support ring are mounted on the upper end surface of the support ring means.
By adjusting the height, the height of the support pipe can be adjusted.
In the support configured to be supported by the support ring means, the support ring means is rotatably connected to the lower support ring member having the female screw formed on the inner peripheral portion thereof and the lower support ring member via thrust bearing means. consists of a top support ring member being, the rotary operating handle means is mounted on the outer peripheral portion of the lower support ring member, said upper
The upper end surface of the support ring member is
A support is provided that defines the top surface .

[0011 ]

[Action] Examples example, if plug pipe means, in a state where heavy loads, such as concrete slabs are acting, in order to move the insertion pipe means downward, rotating the lower support ring member by rotating the operating handle means .
The upper support ring member does not rotate because the heavy load acts on both ends of the support pin on the upper end surface thereof.
However, in the thrust bearing means are interposed between the lower support ring member and the upper support ring member, slave
There is no lockball function like in conventional devices ,
Moreover, since excessive stress concentration does not occur,
The bearing function can be fully ensured, and only the lower support ring member can be rotated very easily by hand. Therefore, even when a heavy load is applied, the rotation operation of the support ring can be performed very easily, and the insertion pipe means can be easily moved downward. In addition, excessive stress concentration occurs in the conventional device.
Due to the absence of both, wear resistance and durability are secured sufficiently
And the life is extended.

Further, the support ring means may itself
Can be assembled as a unit. Therefore the group
It has excellent uprightness and is easy to handle for transportation and storage. Support
The tring means also as a unit to the support pipe means
It can be installed by engaging the screw, and releasing the screw engagement
Can be detached by
It is extremely easy to put on and take off, so it is
It is easy to carry out. The support provided by this invention is
Holding pipe means, support ring means, plug-in pipe
Means and a support pin, and a support ring means
Is a lower support ring member with internal threads formed on the inner circumference.
And the thrust bearing hand against the lower support ring member.
Upper support ring member rotatably connected via steps
Consists of. Therefore, like the screw tube in conventional devices,
No expensive parts are required, so the total support parts
The number is small and the configuration is simple, so the production cost is large.
Become cheap. As a thrust bearing means, those skilled in the art
Can use well-known thrust bearings
Therefore, the manufacturing cost is also low in this respect.

According to the present invention, in addition to the above construction,
In addition, the thrust bearing means includes the upper support ring.
Between the lower end surface of the member and the upper end surface of the lower support ring member
The lower end face in a state of being positioned to face each other with a gap.
And an annular groove formed between the upper end surface and the annular groove,
A plurality of rotatably inserted balls and the gap
At the lower end surface of the upper support ring member positioned as
The specified outer peripheral surface of the lower end portion and the lower support ring member
Formed continuously between the outer peripheral surface of the upper end defined by the upper end surface
And the convex portion of the annular that is, around the jar convex portions by covering the gap
It consists of an annular retainer member that is slidably fitted.
Support is provided.

In the present invention, the thrust bearing
The structure of the means is extremely simple and easy to manufacture.
Therefore, the thrust bearing means itself can be manufactured at low cost.
The annular retainer member consists of an upper support ring member and a lower support member.
In addition to the function of connecting with the heating ring member, it covers the gap.
It also has the function of preventing foreign matter from entering
Therefore, the durability is improved and the life is extended.

According to the present invention , the male screw is further provided on the upper end portion.
A support pipe means formed with an internal thread and
Engaged with the male thread of the support pipe means via the female thread
Support ring means that can be moved in the axial direction
And when it is movably inserted into the support pipe means,
Both have multiple pin holes that are axially spaced.
Insert pipe means and support pin inserted into the pin hole
And the support ring means includes a rotation operation handle.
Means are mounted and the external threads of the support pipe means are formed.
The elongated male screw is formed with an elongated hole extending in the axial direction,
The bayonet pipe means is plugged into the support pipe means
In the state, the support pin is the length of the support pipe means.
Insert into one of the pin holes of the bayonet pipe means through a hole
Has a length such that both ends project from the slot when
And the plug-in pipe means is provided at both ends of the support pin.
The part is placed on the upper end surface of the support ring means.
The height of the support pipe means is adjustable.
In so that support constructed and, the support ring
The means is a lower support ring having the internal thread formed on the inner circumference.
And the upper support ring member is held on the upper end of the lower support ring member.
Thrust bearing means and the lower support ring
The rotation operation handle means is attached to the outer peripheral portion of the member,
The upper end surface of the thrust bearing means is the support ring hand.
A support characterized by defining the upper end surface of the step,
Provided.

The support in this invention was first described.
To configurations, the upper support-ring member is omitted
Since it has a form, the same effect can be achieved.
In addition, it can be manufactured at a lower cost. Also
Thrust bear held on the upper end of the lower support ring member
Thrust bearings known to those skilled in the art are used as ring means.
Since it is possible to use the ring,
The cost will be lower.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The support improved according to the present invention will be described below in detail with reference to the accompanying drawings. With reference to FIGS. 1 to 3, the support 2 includes support pipe means 4, support ring means 6, insertion pipe means 8, and support pins 10. The support pipe means 4 includes a base 12 and a support pipe 14 whose lower end is connected to the base 12. A male screw 16 is formed on the upper end of the support pipe 14. The support ring means 6 will be described in detail later, but an internal thread is formed on the inner peripheral part thereof, and by engaging with the external thread 16 of the support pipe 14 via this internal thread, Axial movement is possible. A rotation operation handle means 7 is attached to the support ring means 6.

The inserting pipe means 8 comprises a receiving plate 18 and an inserting pipe 20 whose upper end is connected to the receiving plate 18. The insertion pipe 20 is configured to be inserted into the support pipe 14 so as to be movable in the axial direction thereof.
The insertion pipe 20 is formed with a plurality of pin holes 22 at intervals in the axial direction. Each pin hole 22 is
The insertion pipe 20 is formed in such a manner that the outer peripheral surfaces facing each other at an interval of 180 ° in the circumferential direction are penetrated with the same axis. That is, each pin hole 22 is inserted into the insertion pipe 20.
Has an axis line orthogonal to the axis line of. Of each pin hole 22,
The intervals (pitch) in the axial direction of the insertion pipes 20 are specified to be substantially the same. The axis of each pin hole 22 alternates in the axial direction of the insertion pipe 20,
The insertion pipe 20 is positioned with a deviation of 90 ° in the circumferential direction. This structure is rational in setting the interval between the pin holes 22 short, and is also advantageous in strength of the insertion pipe 20. The support pin 10 is
Both ends are configured to have a length that protrudes from the pin hole 22 when inserted into the pin hole 22. Since the plug-in pipe 20 may be formed of a solid rod member, the plug-in pipe means 8 includes such a structure.

Referring to FIGS. 4 to 7, the support ring means 6 includes a lower support ring member 26 having an internal thread 24 formed on an inner peripheral portion thereof, and a thrust bearing means 28 for the lower support ring member 26. The upper support ring member 30 is rotatably connected. The rotating operation handle means 7 is attached to the outer peripheral portion of the lower support ring member 26. Each of the lower support ring member 26 and the upper support ring member 30 has a cylindrical shape, and the female screw 24 is formed on the inner peripheral portion of the lower support ring member 26, but the inner peripheral surface of the upper support ring member 30 is simply Only the circumferential surface is formed.

The thrust bearing means 28 has a lower end surface 31 and an upper end surface 27 with the lower end surface 31 of the upper support ring member 30 and the upper end surface 27 of the lower support ring member 26 positioned so as to face each other with a gap. An annular groove 32 formed between the annular groove 32, a plurality of balls 34 rotatably inserted in the annular groove 32, and a lower end defined by a lower end surface 31 of an upper support ring member 30 positioned with a gap therebetween. An annular convex portion 36 formed continuously between the outer peripheral surface of the portion and the outer peripheral surface of the upper end portion defined by the upper end surface 27 of the lower support ring member 26, and sliding around the convex portion 36 so as to cover the gap. It is composed of an annular retainer member 38 that is freely fitted. The outer peripheral surface of the convex portion 36 is substantially arcuate in cross section. The annular retainer member 38 is
The ring-shaped metal plate having a constant width is put on the outer peripheral surface of the convex portion 36, and then the outer peripheral surface of the convex portion 36 is narrowed down to be easily mounted. As a result, the upper support ring member 30 and the lower support ring member 26 are
Are rotatably connected via a. The retainer member 38 is
The lower end surface 31 of the upper support ring member 30 and the lower support ring
Since it covers the gap between the upper end surface 27 of the sealing member 26, the upper support
The lower ring member 26 and the lower ring member 26 are connected to each other.
In addition to the binding function, it also has the function of preventing the intrusion of foreign matter.
ing. A support portion 40 that projects radially outward is provided on the outer peripheral portion of the lower support ring member 26, and an operation handle 42 is rotatably supported by the support portion 40 between a horizontal position and a vertical position. . The support 40 and the operating handle 42 constitute the rotating operating handle means 7.

When the insertion pipe 20 is inserted into the support pipe 14, both ends of the support pin 10 inserted into one of the pin holes 22 are located above the support ring means 6 engaged with the support pipe 14. By being placed on the upper end surface 33 of the support ring member 30, the height is adjustable with respect to the support pipe 14 . Sa <br/> port ring means 6, the range of axial movement relative to the support pipe 14, at least, the upper support ring member 30
Is defined to include a height adjustment range defined by moving from the upper end surface 15 of the support pipe 14 (see FIG. 5) to a predetermined upper position. That is, the upper end surface 33 of the upper support ring member 30 has the support pipe 1
The height of the insertion pipe 20 is adjusted by the movement in the axial direction in a state of being positioned above the upper end surface 15 of No. 4. In the axial movement in a state where the upper end surface 33 of the upper support ring member 30 is positioned below the upper end surface 15 of the support pipe 14, both ends of the support pin 10 inserted into the pin holes 22 of the insertion pipe 20 are moved. The part is only maintained in a state of being placed on the upper end surface 15 of the support pipe 14. The height adjustment range by the support ring means 6 is defined to be shorter than the interval (pitch) in each pin hole 22 of the insertion pipe 20.

Referring to FIGS. 3 to 6, a head portion 44 is formed at one end of the support pin 10, and a through hole 48 into which a split pin 46 is inserted is formed at a portion near the head portion 44. There is. Another through hole 50 into which the split pin 46 is inserted is formed at the other end of the support pin 10. A holding portion 52 protruding outward in the radial direction is provided on the outer peripheral portion of the lower support ring member 26, and a pin hole 54 is formed in the holding portion 52. One end side (upper side) of the pin hole 54 of the holding portion 52
With the support pin 10 inserted from the through hole 4
8 is positioned on the other end side (lower side) of the pin hole 54. The support pin 10 is held by the head 44 and the split pin 46 inserted in the through hole 48 so as not to come off from the holding portion 52. On the other hand, when the support pin 10 is inserted into the pin hole 22 of the insertion pipe 20, the support pin 10 is pulled out of the pin hole 22 by the head portion 44 and the split pin 46 inserted into the other through hole 50. Is prevented.

Referring to FIGS. 3, 4 and 10, for example, in the insertion pipe 20, the concrete slab 56 (see FIG. 10).
In a state in which a heavy load such as the one described above is applied, in order to move the insertion pipe 20 downward, the lower support ring member 26 is rotated by the rotation operation handle 42. The upper support ring member 30 has an upper end surface 33.
Since the heavy load acts on the support pin 10 through both ends thereof, it does not rotate. However, the lower support ring member 26
Due to the function of the thrust bearing means 28 interposed between the upper support ring member 30 and the upper support ring member 30, only the lower support ring member 26 can be rotated very easily by hand. Therefore, even when a heavy load is applied, the rotation operation of the lower support ring member 26 can be performed very easily, and the insertion pipe 20 can be easily moved downward. Of course, with the heavy load applied to the insertion pipe 20, the upward movement can be easily performed.

As mentioned above, the support ring means 6
The range of the axial movement of the support pipe 14 is at least a height adjustment range defined by the upper end surface 33 of the upper support ring member 30 moving from the upper end surface 15 of the support pipe 14 to a predetermined upper position. Is included.
The axial intervals of the pin holes 22 of the insertion pipe 20 are substantially the same. Each pin hole 22 has an axis line orthogonal to the axis line of the insertion pipe 20, and the axis lines of the pin holes 22 are positioned alternately in the axial direction of the insertion pipe 20 and displaced by 90 ° in the circumferential direction of the insertion pipe 20. Has been. The height adjustment range is
It is defined to be shorter than the axial distance in each pin hole 22 . Or height adjustment range was, since is defined shorter than a distance in the axial direction of each pin hole 22, the height of the insertion pipe 20 by the manual, the to support pin 10 adjusted to the range of advance the distance If it is inserted into the pin hole 22 and both ends thereof are placed on the upper end surface 33 of the upper support ring member 30, the rotation operation of the lower support ring 26 can be reduced. As a result, height adjustment workability is improved .

As described above, the support 120 does not use the conventional chain 120. Instead, the split pin 46 is used. When the support pin 10 is not used (see FIG. 9), if the split pin 46 is inserted into the through hole 48, the split pin 46 is prevented from coming off from the holding portion 52, and the split pin 46 is also prevented from being lost. If the split pin 46 is inserted into the through hole 50 when the support pin 10 is used, the split pin 46 can be prevented from coming off from the pin hole 22 and the split pin 46 can be prevented from being lost. This work is extremely easy as a whole, and does not hinder the rotating operation of the lower support ring 26. As a result, the support pin 10
The workability in the work associated with the use and non-use of is significantly improved.

FIG. 8 shows another form of the support ring means. The support ring means 60 includes a lower support ring member 64 having an internal thread 62 formed on the inner periphery thereof,
Thrust bearing 6 for lower support ring member 64
And an upper support ring member 68 rotatably connected to each other via 6. As the thrust bearing 66, one having a known structure is used. The other structure is substantially the same as that of the above-described embodiment, the same reference numerals are given to the same portions, and description thereof will be omitted. The operation of the support 2 using the support ring means 60 is also substantially the same as that of the above-mentioned embodiment, and the description thereof will be omitted. In the support ring means 60 shown in FIG. 8, the structure in which the upper support ring member 68 is removed also holds as another form of the support ring means. In the case of this configuration, when the insertion pipe 20 is inserted into the support pipe 14, both ends of the support pin 10 inserted into one of the pin holes 22 are engaged with the support pipe 14 by the support ring means 60. By being placed on the upper end surface 67 of the thrust bearing 66, the height of the support pipe 14 is adjustable.

FIG. 11 shows that in the conventional support 100, the support 2 is used in place of the conventional support ring 106.
3 shows an embodiment using the support ring means 6 in FIG. The other structure is substantially the same as that of the above-described embodiment, the same reference numerals are given to the same portions, and description thereof will be omitted. The support 100 using the support ring means 6 has an excellent effect that the support ring means 6 (the lower support ring member 26) can be rotated very easily even under a heavy load. It is a thing.

FIG. 12 shows a further embodiment of the improved support according to the invention. Support 7
0 comprises support rod means 72, support ring means 74 and bayonet pipe means 76. The support rod means 72 includes a support rod member 73 and a base 78 provided at the lower end of the support rod member 73, and the support rod member 73 is formed with a male screw 73a. The support ring means 74 has a female screw 74 a formed on the inner peripheral portion thereof and a female screw 74 a on the male screw 73 a of the support rod member 73.
Axial movement is possible by being engaged via a. The plug-in pipe means 76, in this embodiment,
The support rod member 73 includes an insertion pipe 80 that is movably inserted so as to cover the outer peripheral surface of the support rod member 73. A rotation operation handle means 82 is attached to the support ring means 74. The insertion pipe 80 has a support rod member 73.
When the lower end surface 80a of the insertion pipe 80 is placed on the upper end surface 74b of the support ring means 74 engaged with the support rod member 73 in the state of being inserted into
The height of the support rod member 73 is adjustable.
The support ring means 74 includes a lower support ring member 84 having an internal thread 74a formed on an inner peripheral portion thereof, and an upper support ring member 88 rotatably connected to the lower support ring member 84 via a thrust bearing means 86. I have it. The rotating operation handle means 82 is attached to the outer peripheral portion of the lower support ring member 84, and the upper end surface of the upper support ring member 88 is the upper end surface 74 a of the support ring means 74.
Stipulate. The thrust bearing means 86 has substantially the same structure as the thrust bearing means 6 of the support 2, and thus the description thereof will be omitted. The rotary operation handle means 82 is composed of a pair of operation handles 90 provided so as to project radially outward from the outer peripheral portion of the lower support ring member 84.

In the support 70 constructed as described above, the lower support ring member 8 is operated by the operating handle 90 while a heavy load is applied to the insertion pipe 80.
It can be easily understood that the insertion pipe 80 can be easily moved up and down by rotating 4. The support 70 is suitable for so-called jack use in which a heavy object is moved up and down .

The present invention has been described above in detail based on the embodiments, but the present invention is not limited to the above embodiments, and various modifications or alterations can be made within the scope of the present invention. is there.

[0031]

As described above, according to the support according to the present invention described based on the embodiments, the following effects can be obtained. (1) Even when a heavy load is applied to the insertion pipe means, excessive stress concentration is generated as in the conventional device.
Sufficiently reliable thrust bearing function without slipping
Therefore , only the lower support ring member can be rotated very easily by manual operation. Therefore, even when a heavy load is applied, the rotation operation of the support ring can be performed very easily, and the insertion pipe means can be easily moved downward.
Also, excessive stress concentration as in conventional equipment does not occur
As a result, both abrasion resistance and durability are sufficiently secured.
Life is extended. (2) The support ring means is itself a unit
Can be assembled. Therefore, it is easy to assemble,
Handling such as transportation and storage is easy. (3) The support ring means is also supported as a unit
Can be installed by screwing the pipe means
Since it can be detached by releasing the connection,
It is extremely easy to attach and detach to and from the corrugation
Maintenance can be performed easily. (4) Support is a support pipe means and a support ring
Means, an insert pipe means, and a support pin.
The support ring means is internally threaded on the inner circumference.
The lower support ring member and the lower support ring member.
Rotatably connected through thrust bearing means
And a support ring member. Therefore conventional
Does not require expensive components such as screw tubes in installation
The number of parts of the whole support is small, and the configuration is easy.
Therefore, the production cost will be significantly reduced. Scan last Bear phosphorus
Thrust bearings well known to those skilled in the art
Since it is possible to use
It will be even cheaper. (5) The support ring means is the upper support ring member
Leave a gap between the lower end surface and the upper end surface of the lower support ring member.
The bottom and top surfaces while positioned so that they face each other.
Inserted rotatably in the annular groove and the annular groove formed between
Positioned with a gap between them
The outer circumference of the lower end defined by the lower end surface of the upper support ring member
Surface and the upper end defined by the upper end surface of the lower support ring member
An annular protrusion that is continuously formed between the outer peripheral surface and the gap
A ring-shaped sleeve that is slidably fitted around the projection to cover the
When configured with a retainer member , thrust bearing
The structure of the plugging means is extremely simple and easy to manufacture.
Therefore, the thrust bearing means itself can be manufactured inexpensively.
It The annular retainer member covers the gap
Durability as it also has the function of preventing foreign matter from entering
Is improved and the life is extended. (6) The support ring means is the lower support ring member.
And the thrust held on the upper end of the lower support ring member.
When constructed with bearing means, the entire support
Has fewer parts and is simpler to configure
And the production cost will be even lower.

[Brief description of drawings]

FIG. 1 is a perspective view showing one embodiment of an improved support according to the present invention.

FIG. 2 is an exploded perspective view showing the support shown in FIG.

FIG. 3 is a perspective view showing a main part of the support shown in FIG.

FIG. 4 is a partially cutaway view showing a main part of the support shown in FIG.

FIG. 5 is an exploded cross-sectional view of a main part of the support shown in FIG.

6 is a schematic perspective view showing a main part of the support shown in FIG. 5 in a partially disassembled state.

FIG. 7 is a diagram showing a part of the main part of the support shown in FIG. 6 as viewed from above.

FIG. 8 is a partially exploded sectional view of another embodiment of the support improved in accordance with the present invention.

FIG. 9 is a side view showing a state when the support shown in FIG. 1 is not used.

10 is a side view showing a state of using the support shown in FIG. 1. FIG.

FIG. 11 is a perspective view partially showing still another embodiment of the support improved according to the present invention.

FIG. 12 is a partially exploded cross-sectional view of yet another embodiment of the support improved in accordance with the present invention.

FIG. 13 is a schematic perspective view showing a conventional support in a disassembled state.

14 is a perspective view showing a main part of the support shown in FIG.

[Explanation of symbols]

 2 Supports 4 Support Pipe Means 6 Support Ring Means 8 Insertion Pipe Means 10 Support Pins 14 Support Pipes 15 Upper End Surface 16 Male Screws 20 Insert Pipes 22 Pin Holes 24 Female Threads 26 Lower Support Ring Members 28 Thrust Bearing Means 30 Upper Support Ring Members 33 Upper End Surfaces 38 Retainer member 46 Split pin

Claims (3)

(57) [Claims] 1. A support pipe means having an external thread formed on an upper end thereof, and a support ring formed with an internal thread and axially movable by engaging with the external thread of the support pipe means via the internal thread. Means, and an insertion pipe means movably inserted into the support pipe means and having a plurality of pin holes formed at intervals in the axial direction,
And a support pin inserted into the pin hole, the rotation operating handle means is mounted on said support ring means, said support
The male thread portion of the pipe means on which the male thread is formed has an axis line.
An elongated hole extending in a direction is formed, and the insertion pipe means is
When the support pipe is inserted into the support pipe means, the support pipe is
The insert pipe through the slot in the support pipe means.
Both ends when inserted into one of the pin holes of the
The insertion pie has a length protruding from the hole.
The support means is such that the support ring is attached at both ends of the support pin.
The support pipe means is mounted on the upper end surface of the step.
In the support configured to be supported in height adjustable with respect to the support ring means, the support ring means includes a lower support ring member having an internal thread formed on an inner peripheral portion thereof, and the lower support ring member. against consists of a top support ring member rotatably coupled via a thrust bearing means, said rotary operating handle means is mounted on the outer peripheral portion of the lower support ring member, the upper end surface of the upper support ring member said support Rin
A support characterized in that it defines the upper end surface of the cutting means . 2. The thrust bearing means includes a lower end surface of the upper support ring member and an upper end surface of the lower support ring member, the lower end surface and the upper end surface of the lower support ring member being positioned so as to face each other with a gap therebetween. An annular groove formed between the plurality of balls, a plurality of balls rotatably inserted in the annular groove, and a lower end portion defined by the lower end surface of the upper support ring member positioned with the gap therebetween. An annular convex portion continuously formed between an outer peripheral surface and an outer peripheral surface of an upper end portion defined by the upper end surface of the lower support ring member, and freely slidable around the convex portion so as to cover the gap. The support according to claim 1 , which comprises an annular retainer member fitted to the. 3. A support pipe means having an external thread formed on an upper end thereof, and a support ring formed with an internal thread and capable of axial movement by being engaged with the external thread of the support pipe means via the internal thread. Means, and an insertion pipe means movably inserted into the support pipe means and having a plurality of pin holes formed at intervals in the axial direction,
And a support pin inserted into the pin hole, the rotation operating handle means is mounted on said support ring means, said support
The male thread portion of the pipe means on which the male thread is formed has an axis line.
An elongated hole extending in a direction is formed, and the insertion pipe means is
When the support pipe is inserted into the support pipe means, the support pipe is
The insert pipe through the slot in the support pipe means.
Both ends when inserted into one of the pin holes of the
The insertion pie has a length protruding from the hole.
The support means is such that the support ring is attached at both ends of the support pin.
The support pipe means is mounted on the upper end surface of the step.
In the support configured to be supported so that its height can be adjusted with respect to the support ring means, the support ring means includes a lower support ring member having an internal thread formed on an inner peripheral portion thereof, and the lower support ring member. consists of a thrust bearing means, which is held on the upper end,
The rotation operation handle means is mounted on the outer peripheral portion of the lower support ring member, and the upper end surface of the thrust bearing means is
A support characterized by defining the upper end surface of the support ring means .