JP3049583B2 - Composite jack device for lifting and lifting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is used for lifting and transporting roof frames, floor frames and other heavy materials in the construction of buildings by a push-up method and the like, and also for heavy materials in various manufacturing fields. The present invention relates to a composite jack device for lifting and raising (or including lowering and lowering; the same applies hereinafter) which is also used for lifting and lowering and transporting kinds.

[0002]

2. Description of the Related Art Conventionally, in the implementation of push-up method and lift-up method of construction, various types of jack devices used for lifting heavy objects such as floor frames and roof frames are known and widely used. Has been provided. For example, in a jack device described in Japanese Patent Application Laid-Open No. 2-128038, a roof frame is attached to a vertically movable sheath tube provided on a support,
The reaction force receiver is hung on the outer projection provided in the vertical direction of the support, the jack is supported on the reaction force receiver, and the output end of the jack is fixed to the sheath tube, and the jack expands and contracts. The roof frame is lifted up by the operation and the work of changing the load on the reaction force receiving table.

Further, Japanese Patent Application No. 4-1126 filed by the present applicant has been disclosed.
The jack device according to No. 90, as exemplified in FIG.
Stands 3 and 4 connecting a plurality of vertical lifting jacks 2
A guide roller 5 abutting on the column 1 and lock pin devices 6 and 7 on the upper and lower portions for taking a reaction force on the column 1 are installed on the frames 3 and 4 to enable the jack 2 for lifting and lowering to be effective. The lock pin devices 6 and 7 take up a reaction force with respect to a reaction force receiving portion 8 provided on the support column 1 at a pitch within a stroke, and move up and down.

[0004]

[Problems to be solved by the present invention]
In the jack device disclosed in Japanese Patent No. 128038, since the jack and the supporting portions of the sheath tube and the load-bearing object with respect to the reaction force receiving pedestal and the support column are individually different, the work of changing the load on the jack is individual. It is difficult to automate driving.

The jack device disclosed in Japanese Patent Application No. 4-112690 enables automation and automatic control of lifting and lowering operations, and is relatively easy to install and disassemble. Of course, a combined operation of pushing down and pulling down is also possible. However, the number of jacks 2 is large, and hydraulic piping to each jack 2 is also complicated, leading to complication of the equipment itself and an increase in equipment cost. Above all,
As illustrated in FIG. 9, if the exterior work is performed on the driving floor or a level directly below the drive floor, the mounts 3 and 4 interfere with the outer wall 21, and the execution of the exterior work is restricted. Is not fully exploited.

Accordingly, an object of the present invention is not only to facilitate the operation of automation and automatic control of the lifting and lowering operation of the jack, but also to facilitate the work of installation and dismantling, and also to carry out exterior construction (outer wall construction) at the level of the driving floor. It is an object of the present invention to provide a composite jack device for lifting and raising, which has been improved to a configuration capable of performing the lifting operation.

[0007]

According to a first aspect of the present invention, there is provided a composite jack device for lifting and lifting according to the first aspect of the present invention, wherein the jack moves upward and downward by receiving a reaction force on the column and passing the column. In the apparatus, one or a plurality of jacks 2 are installed vertically at a position deviated from the outer wall 21 of the building toward the inner side of the support 1, and the gantry 3, 4 has a planar shape on the side of the outer wall 21 of the building. The upper and lower pedestals 3 have a shape that can be moved up and down while being accommodated inside, and are composed of a lower pedestal 4 to which a lower end of a cylinder 2a of the jack 2 is connected and an upper pedestal 3 to which an upper end of an output shaft 2b is connected. , 4 are provided with a plurality of guide rollers 5 that abut against the column 1 to exert a binding force, and a reaction force is applied to the column 1 on the upper and lower mounts 3, 4 on the installation side of the jack 2. Upper lock Pins 6 and the lower lock pin 7 is installed, the reaction force receiving portion provided with a plurality at a pitch of less than the effective stroke of the jack 2 in the vertical direction of the post 1 8
The lock pins 6 of the upper and lower lock pin devices 6 and 7
a, 7a are latched.

In the second invention, most of the structure is common to that of the first invention. However, the base is provided with only the lower base 4 to which the lower end of the cylinder 2a of the jack 2 is connected. A plurality of guide rollers 5 are provided on the lower gantry 4 so as to abut on the lower shaft 4.
The upper lock pin device 6 connected to the upper end of the drive floor 20
Is characterized in that it is directly connected to

According to the first aspect of the present invention, the engaging pin 24 for engaging with the engaging portion 23 provided on the side opposite to the position of the jack 2 and closer to the outer wall 21 of the building than the column 1 is located on the upper side. The gantry 3 and the lower gantry 4 are provided so as to be able to advance and retreat in the horizontal direction. Further, the second aspect of the present invention is the outer wall 2 of the building on the opposite side of the position of the jack 2 than the column 1.
The lower gantry 4 is provided with an engaging pin 24 that engages with the engaging portion 23 provided at the one-side position so as to be able to advance and retreat in the horizontal direction.

[0010]

The lower lock pin device 7 is driven to lock the lock pin 7a on the reaction force receiving portion 8 of the column 1 (FIG. 4).
A) When the jack 2 located on the inner side of the column 1 is extended, the lower gantry 4 loses its balance due to the unbalanced load. At this time, the engaging pin 24 is moved to the rib 22 of the column 1.
The balance can be maintained by engaging with the engagement holes 23 of the. Engagement pin 2
Even when the ribs 4 and the ribs 22 are not provided, the balance of the lower gantry 4 can be maintained by the frictional resistance (restraint force) of the guide roller 5 abutting on the side surface of the column 1. When the lifted body 20 such as a building beam or a floor is placed on the upper gantry 3 raised by the extension operation of the jack 2, it is pushed up (FIG. 4B). Conversely, when the upper lock pin device 6 is driven to lock the lock pin 6a on the reaction force receiving portion 8 of the support column 1 and the jack 2 contracts, the upper base 3 also loses balance due to the uneven load. At this time, the balance is maintained by engaging the engaging pin 24 with the engaging hole 23 of the rib 22 of the column 1 at this time. Of course, the balance is similarly maintained only by the function of the guide roller 5.
As a result of the lower gantry 4 being lifted by the contraction operation of the jack 2, the lifted body coupled to the lower gantry 4 is lifted. Thereafter, the lower lock pin device 7 is hung on the column 1 to take a reaction force, the upper lock pin device 6 is released, and the load is changed, thereby completing one step of ascending.

Since the mounts 3 and 4 have a plan shape in which the outer wall 21 on which the jack 2 is not installed is housed inside the outer wall 21 and can be raised and lowered, the outer wall 21 can be mounted at a level near the driving floor and other conditions. There is no hindrance to the execution of exterior work. Moreover, as a result of integrating the upper frame with the drive floor 20, the weight of the jack device itself can be reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. The composite jack device shown in FIGS. 1 to 3 is a vertical pillar 1 (which is usually a main pillar of a building to be constructed) which is a reaction force element of a lifting operation when viewed from the outer wall 21 of the building. There are two jacks 2 arranged vertically inside
The lower end of the cylinder 2a is connected to an upward bracket 11 of the lower gantry 4 by a hinge pin 12, while the output shaft 2
The upper end of b is also connected to the downward bracket 14 of the upper base 3 by the hinge pin 12 (FIG. 2). In the case of the present embodiment, since there are two jacks 2, the hydraulic piping for jacks is halved as compared with the conventional four-pipe structure. The upper and lower pedestals 3 and 4 have a configuration in which an inner steel material 15 and an outer steel material 16 are combined with the support 1 as a center, but the outer steel material 16 on the outer wall 21 side of the building has a planar shape in FIG. According to the shape of the outer wall 21 of the section, it is formed into a mountain shape that can be accommodated inside the outer wall and can be raised and lowered. With this configuration,
The gantry not only has the strength and rigidity necessary for carrying the load to be lifted, but also has sufficient strength and rigidity. In addition, the mounting of the outer wall 21 of the building at the corner portion of the outer wall 21 of the building shown in FIG. It is easily possible at the driving floor level.

The lower surface of the outer steel material 16 on the upper gantry 3 and the upper surface of the outer steel material 16 on the lower gantry 4 are oriented in a 45 ° direction so as to generate appropriate frictional resistance on the side surfaces of two right-angled sides of the support column 1. A drive unit (hydraulic cylinder) 1 having a support arm 17 for moving the guide roller 5 in a diagonal direction of the column 1 with a guide roller 5 having a pair of two inclined rollers.
It is installed with 0. The guide roller 5 can cope with the size and shape (circular, square, etc.) of the horizontal section of the column 1 by the advancing and retracting movement of the support arm 17 by the driving unit 10.

An upper lock pin device 6 for taking a reaction force to a reaction force receiving portion 8 provided by welding a steel piece to the column 1, etc., is provided at a substantially central portion of the inner steel material 15 of the upper and lower mounts 3, 4. Each of the lower lock pin devices 7 is directed inward in the horizontal direction (that is,
(Toward column 1). The illustrated lock pin devices 6 and 7 have a configuration in which the lock pins 6a and 7a are slidably housed in an inward cylinder. A wedge-shaped block 9a of a clamp jack 9 as a driving unit is slidably combined with an inclined surface formed on the rear end surfaces of the lock pins 6a and 7a in a laterally slidable manner. When the wedge-shaped block 9a moves forward, it becomes locked, and when it retreats, it becomes unlocked.

Therefore, as long as the lock pins 6a and 7a can be disengaged, the reaction force receiving portion 8 of the column 1 may be either a concave portion or a convex portion. In the case of the present embodiment,
The pitch (approximately 100 mm) is assumed in the vertical direction of the corner where the lock pins 6a, 7a of the lock pin devices 6, 7 advance and retreat, based on the maximum effective stroke (approximately 1000 mm) of the cylinder 2.
A reaction force receiving portion 8 in which a steel slab is fixed to the column 1 by welding at a pitch of 0 mm) is provided.

As shown in FIGS. 1 and 3A, the corners of the column 1 on the side opposite to the position where the cylinder 2 is installed (that is, on the side of the outer wall 21 of the building) are arranged along the column 1 as shown in FIGS. Ribs 22 are integrally provided in the vertical direction by welding, and engagement holes 23 are provided at equal pitches at positions of the ribs 22 to be reaction force receiving portions. An engagement pin 24 that engages with the engagement hole 23
Is mounted on the outer steel material 16 so as to be able to advance and retreat together with the presser jack 25 shown in FIG. Therefore, the lock pin devices 6, 7 are installed only inside the column 1, and the jack 2
Even if the upper and lower pedestals 3 and 4 become unstable due to the unbalanced load caused by the expansion and contraction operation, the necessary and sufficient reaction force can be obtained by the engagement of the engagement pin 24 with the engagement hole 23,
Stable ascent and descent can be maintained while maintaining balance. The rib 22
3B, instead of providing the support holes 1 and the engaging holes 23, the steel slab 2 fixed by welding in the same manner as the reaction force receiving portion 8 as shown in FIG.
6 may be provided, and the engagement pin 24 may be engaged with the lower surface of the steel slab 26 to take a reaction force for balance. Further, even if the engaging pin 24, the engaging hole 23 and the steel piece 26 are all omitted, the guide roller 5 is brought into contact with the side surface of the column 1 so as to generate an appropriate frictional resistance. A force is obtained, and unbalance of the gantry 3 and 4 during the expansion and contraction operation of the jack 2 can be prevented, and a sufficiently stable lifting operation can be realized.

The method of using the above-described composite jack device is as follows. The steel materials 15 and 16 on which the guide roller 5 and the lock pin devices 6 and 7 are installed are transported to the site as factory processing in advance, and bolts or the like assembled around the column 1 are used. Assemble the upper and lower mounts 3 and 4 by the method described in
Installation work can be easily performed by incorporating and connecting the base jack 2. Of course, the disassembly operation can be facilitated by executing the reverse procedure. After the above-described preparation for installation is completed, the composite jack device is, for example, shown in FIG.
The lifted body 20 such as a floor frame or a roof frame of a building is placed on the upper frame 3 as described above, and the lower lock device 7 is driven first, and the lock pin 7a is placed on the reaction force receiving portion 8 of the column 1. The engaging pin 24 is engaged with the engaging hole 23 to prepare for ascending. Next, the jack 2 is extended and the lifted body 20 is pushed up (FIG. 4B). At this time, the lower gantry 4 maintains a well-balanced and stable state, and the upper gantry 3
Also, the guide roller 5 smoothly and stably moves up without causing lateral vibration due to the guiding action of the guide roller 5. As shown in FIG. 5A, when the jack 2 has been fully extended to its effective stroke, the upper lock pin device 6 is driven to lock the lock pin 6a on the reaction force receiving portion 8 of the column 1 to reduce the load. Assortment is performed. That is, when the jack 2 is slightly contracted, the entire load is supported by the upper lock pin device 6, and the lower lock pin device 7 is in a no-load state. At this stage, the clamp jack 9 serving as the driving unit is retracted. As a result, the lock pin 7 a is removed from the reaction force receiving portion 8, and the engagement pin 24 is pulled out from the engagement hole 23. Thereafter, when the jack 2 is contracted, the lower gantry 4 is raised (FIG. 5B). Therefore, if the object to be lifted is connected to the lower frame 4, it is lifted. At the stage where the jack 2 has contracted the entire effective stroke, the lower lock pin device 7 of the lower gantry 4 is actuated to take a reaction force on the reaction force receiving portion 8 of the column 1 and further engage the engagement pin 24. When the hole 23 is engaged (FIG. 5C), the state returns to the state similar to that of FIG. 4A, and the ascending of one process (extension and contraction of the jack 2) is completed. Also, during the operation of the above-described composite jack device, as shown in FIGS. 1 and 3A, since the outer steel material 16 on the upper and lower mounts 3, 4 is close to the outer wall 21 of the building, the outer wall 21 is attached. There is no problem in the construction of other exterior works.

When the above-described composite jack device is used in a push-up method or the like, jacks 2 are installed on the columns 1 in the horizontal XY directions of the building plan view shown in FIG. Is done. For this reason, each jack device jacks up one side of the column 1 under an eccentric load state, but since the jack devices are symmetrically arranged on the opposite side as a whole building, the balance in the XY direction is balanced. This will push up the driving floor.

The ascending step (therefore, the descending step) of the composite jack device described above is controlled by a hydraulic circuit (not shown). However, since there are two jacks 2, the hydraulic circuit is greatly simplified. Is possible. FIG. 7 is a plan view showing a case where the composite jack device is installed on the column 1 where the outer wall 21 of the building is straight. Inner steel 15
The jack 2 and the lock pin devices 6 and 7 are located inside the support column 1 when viewed from the outer wall 21, and the outer steel member 16 has a planar shape that fits inside the linear outer wall 21 and can be raised and lowered. Therefore, similarly to the case of the corner portion shown in FIG. 1, there is no hindrance to the mounting of the outer wall 21 and other construction work.

The composite jack device shown in FIG. 8 shows an embodiment in which the upper gantry 3 is formed integrally with the driving floor 20. The output shaft 2b of the jack 2 and the upper lock pin device 6 are connected to the drive floor 20, the outer steel member 16 is also made as small as possible, and the engagement pin 24 is omitted. Therefore, the unbalance of the lower gantry 4 during the push-up operation of the jack 2 is stabilized by the roller guide 5. Since the upper base 3 is not provided, it is possible to reduce the weight of the jack device itself and to reduce equipment costs and assembly / disassembly costs. The engaging pin 24 is connected to the support 1 in the same manner as in the above embodiment.
It is also possible to employ a jack device configured to engage with the engagement hole 23 provided in the above.

[0021]

[Effects of the present invention] The composite jack device for lifting and lifting according to the present invention can be applied not only to construction but also to various uses, and it is easy to install and disassemble the jack device, and to achieve full automation. It is possible to easily attach the outer wall 21 of the building and perform other exterior work, which contributes to the efficiency of the building.

[Brief description of the drawings]

FIG. 1 is a plan view showing a composite jack device arranged at a corner of a building.

FIG. 2 is an elevational view of the composite jack device.

FIG. 3A is an elevational view of a cross section of the left half of the composite jack device, and FIG. 3B is a partial view of an engagement pin portion.

4A and 4B are process diagrams of a jack.

FIGS. 5A to 5C are process diagrams of the jack.

FIG. 6 is a plan view of a building in which the composite jack device is installed.

FIG. 7 is a plan view of a jack device linearly arranged on a side of a building.

FIG. 8 is an elevation view showing a different embodiment of the jack device.

FIG. 9 is a plan view showing a use state of a conventional jack device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support 2 Jack 3,4 Stand 5 Guide roller 6,7 Lock pin device 8 Reaction force receiving part 23 Engagement hole 24 Engagement pin 21 Outer wall

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04G 21/14 E04B 1/35

Claims (4)

(57) [Claims] 1. A jack device which moves up and down by receiving a reaction force on a support column along a support column, wherein one or a plurality of jacks are vertically installed at a position inside the support column as viewed from the outer wall of the building, and the gantry is mounted on the support. It has a lower frame connecting the lower end of the cylinder of the jack and an upper frame connecting the upper end of the output shaft, and has a plane shape on the outer wall side of the building that is housed inside the outer wall and has a shape capable of ascending and descending, The upper and lower pedestals are provided with a plurality of guide rollers that abut against a column to exert a binding force, and an upper lock pin device and a lower portion that take a reaction force on the column on the installation side of the jack in the upper and lower gantry. A lock pin device is installed, and a lock pin of the lock pin device of the upper and lower portions is hooked on a plurality of reaction force receiving portions provided at a pitch within the effective stroke of the jack in the vertical direction of the support. A composite jack device for lifting and lifting. 2. A jack device which moves up and down by taking a reaction force on a support column along a support column, wherein one or a plurality of jacks are vertically installed at a position inside the support column as viewed from an outer wall of the building, and the jack is used as a stand. A flat shape on the outer wall side of the building is housed inside the outer wall of the building so as to be capable of ascending and descending, and has a lower pedestal connecting the lower end of the cylinder of the jack, and exerts a binding force by abutting a support. A plurality of guide rollers are installed on the lower gantry, and a lower lock pin device that takes a reaction force on a column is installed on a side of the lower gantry where the jack is installed,
The upper lock pin device connected to the upper end of the output shaft of the jack is connected to the driving floor, and the upper and lower reaction force receiving portions provided at a plurality of pitches within the effective stroke of the jack in the vertical direction of the support post. A composite jack device for lifting and lifting, wherein a lock pin of a lower lock pin device is latched. 3. An engaging pin which engages with an engaging portion provided on the opposite side of the position of the jack and closer to the outer wall of the building than the column is capable of moving forward and backward in the upper and lower frames. The push-pull composite jack device according to claim 1, wherein the composite jack device is provided. 4. An engaging pin which engages with an engaging portion provided on the opposite side to the position of the jack and closer to the outer wall of the building than the column is installed on the lower frame so as to be able to advance and retreat in the horizontal direction. 3. The composite jack device according to claim 2, wherein: