JP2936366B2 - 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 trusses, floor framing trusses and other heavy materials in building construction, or for lifting and lowering heavy materials in various manufacturing fields. The present invention relates to a composite jack device for pushing up and pulling up (including pushing down and pulling down; the same applies hereinafter) used for carrying work.

[0002]

2. Description of the Related Art Conventionally, in the implementation of a push-up method or a lift-up method for construction, for example, there are various well-known jack devices used for lifting heavy objects such as floor frames and roof frames. It has been put to practical use. For example, a jack device described in JP-A-2-128038 is
A roof frame is attached to a vertically movable sheath tube loosely fitted on the outer side of the column, and a ring-shaped reaction force cradle is hung on an outer projection provided at a constant pitch in the vertical direction on the outer surface of the column. The lower end of the jack is supported on the reaction receiving pedestal, and the other end (output end) of the jack is fixed to the sheath tube. It is designed to lift up the frame.

[0003]

Problems to be solved by the present invention
As represented by the jack device described in Japanese Patent Publication No. 28038, a conventional jack device includes a guide portion (for example, a sheath tube) for a jack and its reaction force receiving pedestal and a support, and a support portion (sheath) for a material to be lifted. Due to the individual configuration of the tubes (i.e., not in an organically coupled state), the work of reloading the jacks must be performed individually for each component, thus making it difficult to automate operation. In addition, there were many points of insufficiency and dissatisfaction in functional aspects, such as being able to push up the heavy load, but not being able to expect the lifting function. Further, in a configuration in which a sheath tube serving as a guide member for elevating operation is integrated with a material to be lifted (a roof frame) as in the above-described conventional jack device, installation or dismantling of the jack device is very difficult. It is complicated and a solution is desired.

Accordingly, an object of the present invention is to automate the lifting and lowering operation of a jack including a change of load, in which each component such as a jack, a guide roller, a lock pin and the like is organically connected as one device. Automatic control is possible, and the installation and dismantling work is easy, and functionally, it can perform not only the lifting and lifting of the load to be lifted, but also the combined operation of pressing and lowering, and the variety of applications The object of the present invention is to provide a composite jack device having:

[0005]

As a means for solving the above-mentioned conventional problems, a composite jack device for lifting and pulling according to the present invention moves up and down along a column 1 as shown in an embodiment in the drawing. In the jack device, a gantry 4 connecting the lower ends of the cylinders 2a of the plurality of vertical lifting jacks 2 and a gantry 3 connecting the upper ends of the output shafts 2b are provided vertically (however, the vertical relationship is not limited thereto). A plurality of guide rollers 5 are provided on the upper and lower pedestals 3 and 4 so as to abut on the columns 1. Also, the upper and lower mounts 3, 4 are provided with an upper lock pin device 6, which takes a reaction force on the column 1,
A lower lock pin device 7 is installed, and the column 1 has the lock pins 6a, 7 of the upper and lower lock pin devices 6, 7.
A plurality of reaction force receiving portions 8 are provided at a pitch within the effective stroke of the lifting jack 2 in the vertical direction.

In the composite jack device of the present invention, the guide roller 5 is attached to a support arm 17 which is moved forward and backward by a drive unit 10 in a horizontal direction perpendicular to the side surface of the column 1. In the upper lock pin device 6 and the lower lock pin device 7, the lock pins 6a, 7a are alternately advanced and retracted in the horizontal direction by the drive unit 9, and the lock pins 6a, 7a are moved with respect to the reaction force receiving portion 8 of the column 1. It is a configuration to be disengaged.

[0007]

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 is extended, the upper gantry 3 is raised by the stroke. If a body to be lifted such as a beam or a floor of a building is placed on the gantry 3, 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 column 1 and the jack 2 is contracted, the lower frame 4 is raised by the stroke. You. Same stand 3
If the lifted body is combined with the lifted body, it will be lifted. Thereafter, when 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, and one step of ascending is completed.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
The composite jack device shown in FIGS. 1 and 2 is parallel (vertical) along a vertical column 1 (which is usually the main column of the building to be built) on which the lifting operation is based. The lower ends of the cylinders 2a of the four jacks 2 (although the radix is not limited to this) are connected to the upward brackets 11 of the lower gantry 4 by hinge pins 12). On the other hand, the upper end of the output shaft 2b is also connected to the downward bracket 14 of the upper gantry 3 by the hinge pin 12. The upper and lower pedestals 3 and 4 are, as shown in FIG.
The steel materials 15 and 16 are combined in a cross-girder shape centered at the center, and it is configured so that the load can be easily placed and has necessary and sufficient strength and rigidity. Incidentally, in the case of the illustrated example, the column 1 is a steel tube column having an outer diameter of about 500 mm, and the steel material 15 constituting the gantry 3, 4 is a welded steel material having a length of about 350 mm and a length of about 2000 mm. The other steel material 16 is about 700 mm long and has many reinforcing ribs 1800 mm long
H-section steel is used. The jack 2 has a cylinder outer diameter of about 220 mm, an effective stroke of about 1000 mm,
Those with a capacity of 50 tons are used.

A drive unit (hydraulic cylinder) 10 of the guide roller 5 that rolls by contacting the outer surface of the column 1 at a substantially right angle to the lower surface of the steel material 16 in the upper gantry 3 and the upper surface of the steel material 16 in the lower gantry 4. Installed, the driving unit 10
The guide roller 5 is attached to the distal end of the support arm 17 which is driven to move forward and backward in the horizontal direction. Guide roller 5
Are abutted against the column 1 in a symmetrical arrangement on both sides of an angular position where the later-described reaction force receiving portion 8 is not installed (FIG. 3). The guide roller 5 responds to the size of the outer diameter of the column 1 or the shape of the horizontal cross section (circular, square, etc.) by the reciprocation of the support arm 17 by the driving unit 10.

An upper lock pin device 6 and a lower lock pin device 7 for taking a reaction force on the reaction force receiving portion 8 of the column 1 are provided substantially at the center of the upper and lower pedestals 3 and 4, especially at the steel material 15. It is installed in the direction. Upper and lower lock pin devices 6, 7
Are steel members 15 located on both sides of the column 1 as a center,
A total of two pairs are installed vertically one by one in a symmetrical arrangement to the pair. The illustrated lock pin devices 6, 7 have a height of 10
A lock pin 6a, 7a formed as a flat steel material having a length of 0 mm, a width of 180 mm, and a length of 450 mm is connected to an inward cylinder 6.
b and 7b are slidably housed. 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. The wedge-shaped block 9a is configured to be locked when the wedge-shaped block 9a moves forward (see the upper part in FIG. 3), and to retreat to the unlocked state (see the lower part in FIG. 3). For this reason, a restoring force larger than the slide resistance is always applied to the lock pins 6a and 7a by a spring device (not shown).

Therefore, as long as the lock pins 6a and 7a can be disengaged, the reaction force receiving portion of the column 1 can be either a convex portion or a concave portion. In the case of the present embodiment,
In the vertical direction of the angle position at which the lock pins 6a, 7a of the lock pin devices 6, 7 advance and retreat, at a pitch (1000 mm pitch) assuming the maximum effective stroke (1000 mm) of the cylinder 2, a thickness of 50 mm, A reaction force receiving portion 8 is provided in which a steel plate having a width of about 180 mm is fixed by welding.

The method of using this composite jack device is as follows.
The steel materials 15 and 16 in which are installed are carried into the site, and the upper and lower bases 3 and
By assembling and connecting the jack 2 between the upper and lower pedestals 3 and 4, installation work can be performed relatively easily. 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 places the lifted body 20 such as a floor frame or roof frame of a building on the upper frame 3 as shown in FIG. The lock device 7 is driven to lock the lock pin 7a on the reaction force receiving portion 8 of the column 1 to prepare for ascending. Next, the jack 2 is extended to push up the lifted body 20 (FIG. 4B). At this time, the upper gantry 3 smoothly and stably performs an ascending operation without lateral vibration or the like due to the guiding action of the guide roller 5. FIG.
At the stage where the jack 2 has fully extended to its effective stroke as shown at A , 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 change the load. 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. The lock pin 7 a is retracted toward the front of the reaction force receiving portion 8. Thereafter, when the jack 2 is contracted, the lower frame 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 all of its effective stroke, the lower lock pin device 7 of the lower frame 4
To act on the reaction force receiving portion 8 of the column 1 (see FIG. 5 ) .
C ), the state returns to the state similar to that of FIG. 4A, which means that the ascent of one step (extension and contraction of the jack 2) has been completed.

[0013] increasing step of the composite jack device described above (and thus, also lowering step) is controlled by a hydraulic circuit shown in FIG. The hydraulic circuit includes a hydraulic pressure generating unit 23 having a hydraulic pump 22 driven by an electric motor 21 as a central element, a hydraulic control circuit 24 including a combination of various electromagnetic switching valves, relief valves, flow valves, and the like. A control unit 25 for controlling the hydraulic control circuit 24 in sequence
And the jack 2 connected to the hydraulic control circuit 24,
It is composed of an actuator section such as a clamp jack 9 and a drive section 10.

[0014]

Second Embodiment FIG . 7 shows an embodiment in which the column 1 is formed of a square steel pipe having a side of about 500 mm. In the case of this embodiment, the guide roller 5 is a set of two inclined at 45 ° so as to abut on the side surface of two right angles of the square steel pipe with the support arm 17 which is advanced and retreated in the diagonal direction of the square steel pipe. Is characteristic. The reaction force receiving portion 8 is also provided at a diagonal outer corner different from the arrangement of the guide roller 5, and the upper and lower lock pin devices 6, 7 take a reaction force. In short, it is possible to deal with a wide range of the outer diameter of the column 1 or the difference in the cross-sectional shape by moving the support arm 17 by the driving unit 10 or changing the shape of the guide roller 5. Alternatively, it can be dealt with by the direction of the support arm 17 or the like.

[0015]

[Effects of the present invention] The composite jack device for lifting and raising according to the present invention is, for example, for lifting and raising materials in the construction of a superstructure of a building, or for lowering and lowering a floor frame in a reverse construction method of an underground structure of a building. It can be applied to various uses. In addition, the installation and dismantling of this composite jack device is easy, and there is no need for any personnel to change the load, and full automation can be achieved, which greatly increases the efficiency and efficiency of lifting and transporting heavy materials. It will contribute.

[Brief description of the drawings]

FIG. 1 is a front view of a composite jack device.

FIG. 2 is a side view of a cross section of a left half of the composite jack device.

FIG. 3 is a plan view in which an upper half is a cross section.

[4] A, B are increased process diagram of the jack.

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

FIG. 6 is a hydraulic circuit diagram of the jack.

FIG. 7 FIG. 4 is a plan view of a different embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support 2 Jack 3, 4 Stand 6, 7 Lock pin device 6a, 7a Lock pin 8 Reaction force receiving part 5 Guide roller 9, 10 Driving part 17 Support arm

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiromichi Yamada 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Main Branch (72) Inventor Yoshiteru Iwasa 2-5-1 Minamisuna, Koto-ku, Tokyo No. Takeuchi Corporation Technical Research Institute Co., Ltd. (72) Inventor Eiji 2-14-14 Minamisuna, Koto-ku Tokyo No. 14 Takenaka Corporation Technical Research Institute (72) Inventor Yoshinori Kukino 2--14 Minamisuna, Koto-ku, Tokyo Inside Takenaka Corporation Technical Research Institute (72) Inventor Takumi Fujii Minamisuna, Koto-ku, Tokyo 2-5-1-14 Takenaka Corporation Technical Research Institute (72) Inventor Hiroyuki Nishimura 2-5-1-14 Minamisuna, Koto-ku, Tokyo Takenaka Corporation (72) Inventor Hiroshi Kibayashi 2-5-14 Minamisuna, Koto-ku, Tokyo Inventor Takenaka Corporation (58) Investigated field (Int.Cl. ⁶ , DB name) E04G 21 / 16 B66F 3/46 E04B 1/35

Claims (2)

(57) [Claims] 1. A jack device that moves up and down along a support column, wherein a vertical frame and a vertical frame are connected to the lower end of a plurality of vertical lifting jacks, and a vertical frame is connected to the upper end of an output shaft. Is provided with a plurality of guide rollers that abut against the support, and the upper and lower pedestals are provided with an upper lock pin device and a lower lock pin device that take a reaction force on the support, and the support is provided with the upper and lower lock pins. A composite jack device for pulling up and pulling up, wherein a plurality of reaction force receiving portions on which a lock pin of the device is hooked are provided in a vertical direction at a pitch within the effective stroke of the jack for lifting. The guide roller is mounted on a support arm which is advanced and retracted in a horizontal direction perpendicular to the outer peripheral surface of the column by a drive unit. The upper lock pin device and the lower lock pin device alternately lock pins by the drive unit. The push-pull composite jack device according to claim 1, wherein the lock pin is moved forward and backward in the horizontal direction, and the lock pin is engaged with and disengaged from a reaction force receiving portion of the column.