JPH08119589A - Jacking device to push up large structure - Google Patents

Abstract

PURPOSE: To realize the weight reduction and the miniaturization by screwing a screw rod which is vertically provided from the lower part of a jacking frame into the jacking frame and an elevating table, and moving the elevating table in the vertical direction through the forward and reverse rotation of a traverse nut and the screw rod. CONSTITUTION: In a jacking device, a through hole 1g through which a screw rod 21 is passed is provided in the center of a box body 1f to restrict four columns. The screw rod 21 is erected at the lower parts of four columns by being supported by a screw rod bearing 23 to support the lower part of the screw rod. A worm 10 of a worm gear jack B is rotated by a driving device, and the driving force is transmitted to a worm wheel 11. The rotational force is given to the screw rod 21 through a key 12, and an elevating table fixed to the traverse nut 24 which is screwed to the screw rod 21 is advanced/ retracted along the screw cut in the screw rod 21 in association with the rotation of the screw rod 21, and the elevating table is moved in the vertical direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jack device for pushing up a large structure for jacking up a large structure such as a structure.

[0002]

2. Description of the Related Art Conventionally, columns are erected at regular intervals in a plane,
When constructing a multi-story structure by installing beams between pillars, the top floor, which is the rooftop floor, is constructed near the ground, and a construction space is formed below the top floor while jacking up the top floor. There are a climbing method, a screw method, and a lift-up method as an elevating means in a construction method in which columns, beams, floors, walls, etc. of lower floors are constructed in a space and jacking up is repeated on the upper part.

As a prior art of the inner screw method of the elevating means, a construction device comprising a rotating device is provided in a rotatable screw inner column at the outer four corners of the structure, and a weatherproof roof cover is provided above the inner column. Ascending the equipment, build sequentially from the lower floor to the upper floor. (JP-A-4-25466
As another lifting means, a pillar for supporting the building is built in the ground in advance, and the roof floor and the top floor of the building are built near the ground by connecting to the pillar, and by a hydraulic jack device installed underground. There is a hydraulic jack system that gradually builds the lower floor while jacking up. (See Japanese Patent Laid-Open No. 6-200626) As described above, various elevating means are used as a means for constructing a structure, but in many cases, the construction method is changed from a conventional manual work to an industrial method depending on the weather. Instead, it is carried out for the purpose of avoiding the danger by working at a high place and saving labor by automation.

[0004]

The above-mentioned conventional method uses a construction means for structures and various elevating means, and the elevating means making use of the respective characteristics is used according to the scale and structure of the structure to be constructed. Has been adopted. However, in the above-described screw method of the construction apparatus, when the weight load becomes large, the diameter of the screw rod becomes large, and the rotating device is enlarged accordingly, so that the apparatus becomes large in size and cannot be made lightweight and compact.

Similarly, in the hydraulic jack device, when the weight load becomes large and the lifting stroke becomes long, the piston rod becomes long, the axial force becomes large, and the piston diameter becomes large, resulting in a large cylinder and hydraulic unit. However, there is a problem that it is difficult to control the functional accuracy and operation by hydraulic pressure. The present invention is proposed in view of the problems of the above-mentioned prior art, and an object thereof is to construct a large structure such as a building, particularly a civil structure such as a tower structure or a bridge girder. At the same time, the present invention provides a jack device for constructing the building near the ground and constructing the building by pushing up the building easily and for pushing up a large structure that improves operability and control accuracy.

[0006]

In order to achieve the above object, a device for pushing up a large structure according to the present invention according to the present invention is a plurality of columns which are respectively erected at four corners of a base and upper columns of the columns. And a jack frame connected by a lower frame, and an elevating part that is surrounded by a set of four columns of the same frame and slidably moves up and down the four columns by rollers, and diagonally extends to columns at four corners. Between the base end projecting portions of the vertically arranged lifting frame, the lifting gantry connected by a connecting frame so as to surround the pillars 1 at the four corners, and a through hole in the center of the lifting unit of the lifting pedestal from the jack mount. From a screw rod vertically installed and screwed, and a traverse nut fixed to the elevating part of the elevating and lowering platform and screwed to the screw rod, and a worm jack arranged on the upper part of the screw rod and rotating the screw rod. With a jack device A drive device with a variable drive motor for driving the same jack device, and a manipulation unit for operating control of the same variable drive motor.

According to a second aspect of the present invention, the lifting gantry is equipped with a fixed metal object which is detachably fixed to a structure to be jacked up at a diagonal lifting frame tip protruding from the jack pedestal column. Is configured. According to the invention of claim 3, a worm jack for rotating the screw rod is equipped with a rotary encoder and a pressure converter.

According to the invention of claim 4, a horizontal support jack is arranged on the upper part of the jack mount. According to the invention of claim 5, a control operation device for controlling the drive device, measuring the measurement data of the rotary encoder in the worm jack, measuring the measurement data of the pressure converter, and controlling and operating the drive of the horizontal support jack. Is provided.

[0009]

According to the jack device for pushing up a large structure according to the present invention, the jack stand in which the columns at the four corners of the base are connected by the upper and lower frames, and the columns are slidable on the diagonal between the columns at the four corners of the platform. The lifting gantry provided has a screw rod that is vertically installed from the lower part of the jack pedestal to the lifting part of the lifting gantry, and the screw rod rotates the variable drive motor of the drive unit installed at the upper part of the jack pedestal. Driven by the drive shaft to the speed, each worm jack is operated, and the traverse nut and screw rod fixed to the elevating part of the elevating gantry rotate forward and backward while screwing to move the elevating gantry up and down. It goes up and down by doing.

The elevating and lowering of the elevating / lowering platform is performed by operating a drive motor, and is controlled by an operating device so as to be stopped at a predetermined height or to be movable by setting an ascending / descending speed. Since the pillars at the four corners receive a compressive force during jacking up, the stress applied to the jack device is dispersed as four pillars, and the load of a large structure is supported to stabilize the jack device.

According to the second aspect of the present invention, the structure to be jacked up is fixed to the fixed metal object removably attached to the end of the elevating frame of the elevating gantry, and the structure is moved up and down. According to the invention of claim 3, a rotary encoder and a pressure converter are attached to a worm jack portion that rotates a screw rod in the jack frame, the rotational speed of the worm of the worm jack is measured by the rotary encoder, and the measurement signal is controlled. By sending it to the panel and displaying it on the display of the operating device, the elevation position of the lifting gantry is measured and accurately controlled to a predetermined height, and the pressure converter applies the load load by the screw rod pressure converter of the lifting gantry. This is a measurement, and a measurement signal is sent to the control panel, and the measured load is displayed on the display of the operating device.

According to the fourth aspect of the present invention, since the horizontal support jacks are provided horizontally at the four corners of the upper part of the jack frame, the structure is prevented from swaying during jacking up of the elevating gantry, and the structure is vertically supported. Holds at a steady rise. According to the invention of claim 5, the drive unit supplies power, performs automatic / manual operation, inverter control, measurement data of a rotary encoder for measuring the height of the worm jack of the jack device, and the pressure for measuring the load of the lifting gantry. By providing a control operation device that measures the measurement data of the converter and controls the drive of the horizontal support jack, the measurement data is displayed and displayed, and the horizontal support jack is controlled to appear and disappear during jacking up It is possible to operate the elevating gantry while preventing the swaying and holding the structure vertically and observing the image on the display of a large structure to be jacked up.

[0013]

The present invention will be described below with reference to the illustrated embodiments. 1 to 4 show an embodiment of a jack device for pushing up a large structure according to the present invention. The jack device includes a jack stand A, a jack device B, a drive device C for driving the jack device B, and a jack. It is composed of an elevator gantry D mounted on the device B.

Further, horizontal support jacks E are mounted on the upper portions of the columns in a diagonally outward shape. (Refer to FIG. 2) Further, the driving device C is driven to operate the elevating gantry D by the jack device B, the load device of the jack device B is measured, and the operating device for controlling and operating the elevation height measurement is displayed. F is provided. (See FIG. 1) First, the jack mount A will be described.

The jack pedestal A includes a column 1 and a lower horizontal member 2
And the upper horizontal member 3. The support columns 1 are located at four corners of a substantially rectangular plane, and the center of the support column 1 is a space, which is composed of four support columns 1a, 1b, 1c, and 1d (see FIG. 3). The four support columns are fixed to the ground. It is fixed to the base plate 1e. The pillar heads of the columns 1a to 1d are constrained by a box 1f, and as shown in FIG. 3, a lower horizontal member 2a connecting between the columns 1c and a lower horizontal member 2b connecting between the columns 1b of the columns. The column heads are connected to each other by the upper horizontal members 3a and 3b that connect the box bodies 1f that restrain the four columns. (Refer to FIG. 2) In the figure, 5 is a support middle reinforcing material,
6 is an upper horizontal reinforcing material, and 5'is a pillar reinforcing material.

Next, the jack device B will be described with reference to FIG. In the jack device B, a through hole 1g through which a screw rod 21 penetrates is provided in the center of a box body 1f that restrains the four columns, and the lower part of the four columns is supported by a screw rod bearing 23 that receives the lower portions of the screw rods. Screw rod 2
1 is installed upright, a worm gear jack B'is installed above the through hole 1g of the box body 1f, and the worm wheel 11 and the screw rod 21 are engaged with the worm 10 of the worm gear jack B'and the worm 10. The nose portion 21 ′ is engaged via the key 12.

The rotary encoder 30 is attached to the end of the worm 10 and is attached thereto. (See FIG. 2) As shown in FIG. 4, the traverse nut 2 is attached to the screw rod 21.
4 are screwed together and fixed to the lower surface of the elevating part 70 of the elevating gantry D. The screw rod 21 is provided with a protective cover 25 that expands and contracts to prevent scattering of oil and the like and adhesion of dust.

The worm gear jack B'is also provided with a pressure converter 19 (pressure sensor). (Fig. 5
The reference pressure transducer 19 is for measuring the load acting on the traverse nut 24 screwed to the screw rod 21,
The same load is transmitted to the lower part of the screw rod 21 via the screw surface engraved on the screw rod 21, and further, the lock nut 13, the thrust roller bearing 14, the thrust ring 15, and the piston 16 screwed onto the upper part of the screw rod 21 are transmitted in this order. To be done.

Pressure oil is filled in a space 17 between the bottom of the piston 16 and the bracket 18 and is sealed by an O-ring 16a mounted on a member defining the space 17. The load acting on the traver nut 24 is transmitted from the bracket 18 to the box body of the column head of the jack stand A through the pressure oil on the bottom of the piston 16 through the above-described process.

At this time, the pressure oil sealed in the space 17 between the bottom of the piston 16 and the bracket 18 is pressurized, and this pressure is measured by the pressure converter (pressure sensor) 19 and measured. A signal is sent to the control panel, and the measured load is displayed on the display 40 of the operating device F. The pressure converter 19 detects the load based on the measured measurement signal, and when the abnormal load due to an earthquake or wind pressure acts on the worm gear jack B ′, the variable drive motor 62 is stopped.

The rotary encoder 30 measures the height of the lifting gantry D, measures the rotation speed of the worm 10 of the worm gear jack B ', and sends a measurement signal under the operating device to the control panel 42 to operate the operating device. The height of the lift gantry D measured on the display 40 of F is displayed. In this way, in the jack device B, the worm 10 of the worm gear jack B ′ is rotated by the drive device described later, and its rotational force is transmitted to the worm wheel 11, and the rotational force is applied to the screw rod 21 via the key 12. And the traverse nut 2 screwed onto the screw rod 21
The elevating gantry D fixed to 4 moves back and forth along with the screw engraved on the screw rod 21 as the screw rod 21 rotates, and the elevating gantry D moves up and down, and is raised and lowered by the pressure transducer (pressure sensor) 19. The load of the gantry D is measured, the height of the lifting gantry D is measured by the rotary encoder 30, and the respective measurement results are displayed on the display 40 of the operation device F.

Next, the drive unit will be described with reference to FIGS. First, as shown in FIG. 2, the pedestal 60 is laid over the upper horizontal member 3a of the jack pedestal A, the variable drive motor pedestal 61 is laid on the pedestal 60, and the variable drive motor 62 is installed on the pedestal 61. A mitter gear 64 that connects the worm gear jack B ′ to the pedestal 60 at right angles to the motor shaft 63 and a shaft 65 are connected so as to be transmitted to each jack device B.

The variable drive motor 62 is driven by the operating device F under the inverter control of high speed and low speed, and the miter gear 64 connected to the motor shaft 63 converts the right and left orthogonal directions to the shaft 65 for transmission to the shaft 65 and the miter gear 64a for the right and left orthogonal directions. The direction of the jack device B is changed and transmitted to the worm gear jack B ′ via the shaft 65.
Is driven.

Next, the elevating gantry will be described with reference to FIGS. The elevating gantry D is installed so as to be positioned in the middle with respect to the height direction of the jack pedestal. The pillar is composed of four columns as described above, and the screw rod is provided at the center of the four columns. It is lifted up and down by the rotation of a vertically installed screw rod, and the lifting portion 70 of the lifting gantry penetrates the screw rod 21, and the traverse nut 24 is fixed to the lower part of the lifting frame 71 by screwing the screw rod 21. An elevating roller 73 is mounted on the side surface of the elevating part 70 of the elevating gantry so as to be slidable on the four columns 1a, 1b, 1c and 1d.

The elevating frames 71 in the columns are horizontally connected by diagonal elevating frames 71. Further, an elevating frame is extended diagonally from each elevating frame 71, and a base end projecting portion 71a of the elevating frame is connected to the outer periphery by a connecting frame 75 so as to surround the pillar. (See FIG. 3) In FIG. 4, 27a and 27b are limiters for detecting the upper and lower limit positions of the lifting gantry, and when the lifting gantry deviates from the preset lifting range for some reason, the limiters come into contact with the limiters. The safety is maintained by stopping the driving.

Further, a fixed metal member 77 for releasably fixing the structure N to be jacked up is attached to the tip of the base end projecting portion 71a of the elevating frame. Next, the horizontal support jack E will be described with reference to FIG. The horizontal support jack E is mounted diagonally on the side of the box body 1f of the jack stand A so as to prevent the structure to be jacked up from swaying, and also to raise the structure stably while holding the structure vertically. To do.

The horizontal support jack E has a horizontal rod 80a which can be retracted and retracted from a fixed plate 80b, and a pressure bearing member 81 extending from the tip of the horizontal rod. A roller receiver 88 is attached to the tip of the pressure bearing member 81. A roller 89 and a bearing member 81 that slide by sandwiching the guide material Y of the body S to be jacked up.
A roller 90 that presses the guide material Y and slides is attached to the tip.

Further, the bracket 8 is provided above the pressure bearing member 81.
6, the clevis 84 is fixed to the fixed plate 80b, and the hydraulic jack 82 is mounted between the brackets via the clevis 84. In the figure, 83 is a cylinder, 8
Reference numeral 5 is a pin, and reference numerals 82a and 82b are a hydraulic pressurizing port and a hydraulic returning port of the hydraulic jack, respectively.

Next, the operating device will be described. Input the following control conditions into the control panel prior to operation. a. Selection of drive motor speed (high speed, low speed 1 to 3) b. Setting of lifting stroke of lifting platform (3000mm)
And rotary encoder to measure the height of the lifting platform, and limit switch settings during overrun. c. Measurement of load by pressure transducer and setting of emergency stop in case of abnormality. e. Horizontal support jack automatic support setting. f. Settings for alarm and alarm cancellation for the above control abnormalities.

The following procedure is performed on the operator console. Turn on the operation power supply. Set the load (low speed) when selecting the operation or moving up and down. B. Interlocking lock of horizontal support jack. C. ON / OFF switch for lifting platform. D. The elevating gantry stops at a predetermined height (upper limit).

During this time, if an abnormal load is applied due to an earthquake or wind pressure, the pressure converter operates to cause an emergency stop. In addition, the limit switch automatically stops during overrun. E. No load (high speed) when selecting operation or descending. F. Turn on the lowering switch of the lifting platform. G. Lifting platform stops at a predetermined height (lower limit). J. Alarm and alarm reset in case of abnormality during operation.

The following display is made on the color CRT. Load (tf) and total load for each jack device Operation pattern of the lifting gantry (up / down) Lifting speed (mm / min) Pressurization set value and current value (tf) of horizontal support jack Next, use this device An example will be described.

FIG. 7 shows the construction of a large structure in a multistory parking lot using this device. First, the support jack device M is installed at a position where a multi-storey parking lot is installed, the steel frame member on the upper part of the frame S (dotted line part) which becomes the multi-storey parking lot is assembled, and the fixed hardware 77 of the elevator gantry D and the lower part of the frame S are assembled. The guide plate Y for guiding the skeleton S is fixed, and further, the horizontal support jack on the upper part of the jack rack is pressed to sandwich the guide plate Y with the rollers (see FIG. 7A), and the jack device is driven. Ascending / descending the elevating / lowering platform D by one stroke to raise the skeleton (see FIG. 7B), the steel frame member S is attached to the lower portion where the space for one stroke is formed by the above work, and the supporting jack The frame S ₁ that has already been raised by M is temporarily received and separated from the ascending metal fixture of the elevating gantry D ′ and lowered to the original position. (See FIG. 7C) The above steps are repeated as one cycle to build a large structure at a predetermined height.

[0034]

As described above, according to the present invention, as described above, the jack stand in which the support posts at the four corners are connected to each other by the upper and lower frames, and the lift support which is slidably provided on the diagonal line between the support posts at the four corners of the mount base. On the gantry, a screw rod vertically hung on the elevating part of the gantry drives the variable drive motor of the drive device installed on the top of the jack rack at the required rotation speed to operate each worm jack via the drive shaft. Then, by rotating the traverse nut fixed to the elevating part of the elevating gantry and the screw rod forward and backward, the traverse nut is moved up and down to move the elevating gantry up and down. As described above, the jack pedestal is elevated and lowered via the drive motor, but the jack pedestal is controlled to be movable by stopping the jack pedestal at a predetermined height in advance or setting the elevation speed by the operating device.

Since the pillars at the four corners receive a compressive force at the time of jacking up, the pillars are used as a plurality of pillars to disperse the load applied to the jack device and to support the load of a large structure to be jacked up. This is intended to stabilize the device. According to a second aspect of the present invention, the elevating frame of the elevating gantry can be fixed to a structure to be jacked up via a fixed metal member that is detachably fixed, and the structure can be moved up and down.

According to a third aspect of the present invention, a rotary encoder and a pressure converter are attached to a worm jack portion that rotates a screw rod in a jack rack, and the rotary encoder measures the rotational speed of the worm of the worm jack. Is sent to the control device, the elevation position of the jack mount is measured, and this is accurately controlled to a predetermined height.

Further, the pressure converter measures the load load by the screw rod pressure converter of the jack mount, sends a measurement signal to the operating device, displays the measured load, and raises and lowers the jack mount safely and securely. Carry out. According to the invention of claim 4, by providing the horizontal support jacks at the upper four corners of the jack stand, the structure of the jack stand is prevented from shaking when the structure is jacked up, and the structure is held vertically. To do.

According to the fifth aspect of the invention, the rotary encoder provided on the worm jack of the jack device is moved up and down by controlling the rotation speed at high speed and low speed by supplying power, automatic and manual operation and an inverter in the drive device. The height of the gantry is measured, and the measurement data and the pressure converter measure the load of the elevating gantry, the measurement data is measured, and a control device for controlling the drive of the horizontal support jack is provided. Displays the measured data on the display, and the horizontal jack prevents the structure from shaking during jacking up and down, and holds the structure vertically, and displays each measured data and display image. Safe by operating while monitoring,
It can be raised and lowered quickly.

[Brief description of drawings]

FIG. 1 is an elevational view showing an embodiment of a jack device for pushing up a large structure according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a view taken along line I-I in FIG.

FIG. 4 is a vertical sectional view of a jack portion.

FIG. 5 is an enlarged vertical sectional view of a main part of a jack part.

FIG. 6 shows a horizontal support jack, in which (a) is a side view, (b) is a plan view, and (c) is an arrow II-II of (a).
FIG.

7 (a), (b) and (c) are process diagrams showing construction of a large structure using the jack device.

FIG. 8 is an elevation view of the operating device.

[Explanation of symbols]

 A jack stand B jack device B'worm gear jack C drive device D elevating gantry E horizontal support jack F operating device S body Y body guide 1 1, 1a, 1b, 1c, 1d prop 1e base plate 1f box 2, 2a, 2b Lower horizontal member 3, 3a, 3b Upper horizontal member 5 Post middle reinforcing member 5'Post reinforcing member 6 Upper horizontal reinforcing member 10 Worm 11 Worm wheel 12 Key 13 Lock nut 14 Thrust roller bearing 15 Thrust ring 16 Piston 16a O-ring 17 Vacancy 18 Bracket 19 Pressure transducer 21 Screw rod 21 'Screwless portion 23 Screw rod bearing 24 Traver nut 25 Protective cover 27a, 27b Limiter 30 Rotary encoder 40 Display 41 Operation panel 42 Control panel 60 Frame 61 Variable drive motor cradle 62 Variable drive motor 63 Motor shaft 64 Miter gear 65 Shaft 70 Elevating part 70a Through hole 71 Elevating frame 71a Elevating frame base end protrusion 73 Elevating roller 75 Connecting frame 77 Fixing hardware 80a Horizontal rod 80b Fixed plate 81 Support Pressure member 82 Hydraulic jack 82a Hydraulic pressurizing port 82b Hydraulic return port 83 Cylinder 86 Bracket 89 Roller 90 Roller

Front page continuation (72) Inventor Yasuhide Oguri 1-829 Komakawa, Higashisumiyoshi-ku, Osaka City, Osaka Prefecture Jack Jack Co., Ltd. (72) Inventor Setsu Miura 1-829, Komagawa, Higashisumiyoshi-ku, Osaka Osaka Jack Manufacturing Co., Ltd.

Claims (5)

[Claims] 1. A plurality of stanchions respectively erected at four corners of a base and a jack pedestal in which the respective stanchions are connected by an upper frame and a lower frame,
A base end projection of an elevating frame arranged diagonally on the pillars at the four corners from an elevating part surrounded by a set of four pillars of the same platform and slidably elevating the four pillars via rollers. Between the parts, an elevating gantry which is connected by a connecting frame so as to surround the pillars 1 at the four corners, and a screw rod which is erected from the jack pedestal in a through hole in the center of the elevating part of the elevating gantry and screwed thereinto, A jack device comprising a traversing nut fixed to the elevating part of the elevating gantry and screwed to the screw rod, and a worm jack arranged on the upper part of the screw rod and rotating the screw rod, and the jack device. A jack device for pushing up a large structure, comprising a drive device having a variable drive motor and an operating device for operating and controlling the variable drive motor. 2. The lifting gantry is equipped with a fixed metal member that is detachably fixed to a structure to be jacked up at the tip of a diagonal lifting frame protruding from the jack pedestal column. A jack device that pushes up large structures. 3. The jack device for pushing up a large structure according to claim 1, wherein a rotary encoder and a pressure converter are mounted on a worm jack that rotates the screw rod. 4. The jack device for pushing up a large structure according to claim 1, wherein a horizontal support jack is provided on an upper portion of the jack frame. 5. A control operation device for controlling and operating the drive device, the measurement data of a rotary encoder in a worm jack, the measurement data of the pressure converter, and the drive of the horizontal support jack. A jack device for pushing up a large structure according to item 1.