KR100354853B1 - Pulling up apparatus for work repairing concrete structure - Google Patents

Abstract

The present invention relates to a lifting device for repairing a concrete structure, comprising: locking means for locking the plunger raised to the cylinder of the hydraulic jack so as not to descend, and measuring means for measuring the raised height of the object to be lifted by the plunger; It is configured to include, and is configured to combine the two-stage contact hole in the upper portion of the plunger by height adjustment means.

Since the present invention is configured so that the height of the two-stage contact hole in the upper portion of the plunger of the hydraulic jack by the height adjusting means can be installed in a variety of cases when the distance between the object to be raised and the support element is different, it is convenient to perform repair and reinforcement work. There is an advantage to this. In addition, after raising the plunger assembly, locking the plunger by the locking means of the locking means does not lower, there is an advantage that can maintain the raised object to be stable, accordingly, it is possible to safely and easily carry out maintenance and reinforcement work after the lifting. There is an advantage to that. In addition, there is an advantage of preventing the breakage of the bridge due to the empty space of the bridge device in the lifting work for the bridge repair, reinforcement work by installing the composite bridge device on the upper end of the jack jack.

Description

Lifting device for repairing concrete structures {PULLING UP APPARATUS FOR WORK REPAIRING CONCRETE STRUCTURE}

The present invention relates to a lifting device for repairing concrete structures, in particular, the height of the lifting can be adjusted by the screw-type height adjusting means of the plunger assembly, and after the lifting, the locking device of the locking means can be locked to prevent the plunger from descending, the upper end The present invention relates to a lifting device for repairing a concrete structure by installing a synthetic bridge device in a bridge to enable safe and simple bridge repair and reinforcement work.

In general, a bridge is a structure such as a bridge beam and a top plate installed over an upper part of a bridge, and the bridge top and beam are fixed at one end so as to expand or contract according to elastic stress applied after installation. It is installed over the bridge in the state of the movable end, and a fixed bridge or a vibration absorbing synthetic bridge device is installed between the bridge and the operation of the beam and the bridge deck to enable such expansion or contraction action.

Bridges constructed in such a configuration frequently damage the bridge structure or the bridge device due to various types of natural or artificial factors as time passes after installation. For example, corrosion of the bridge device due to leakage at the joint portion of the bridge deck, destruction, paralysis of the grease injected into the bridge device, and the like, cracking of the bridge or cracking of the top plate and beam may occur. do. In addition to the above examples, if the bridge is collapsing due to the ground subsidence, the positional change of the top plate, the beam is destroyed by the impact load, and the top plate partially sinks, resulting in a step between the top plates, exceeding the original design load of other bridges. The bridge must be repaired by various factors such as the lack of cross section of the bridge system and the need to replace the bridge deck due to the appearance of heavy vehicles.

In repairing a damaged or deformed bridge, the whole or part of the bridge may be removed and restored depending on the degree of damage, or the original structure may be restored by partial repair work. Thus, the whole or part of the bridge structure may be removed. In addition, rebuilding requires a lot of heavy equipment and manpower, which incurs a huge cost of repair and construction, and makes it impossible to pass the vehicle until the repair is completed, causing traffic jams due to the closure or detour of the traffic. There was this.

Therefore, when repairing a bridge, repairing by moving only the part requiring repair without moving or dismantling the bridge deck or beam structure in the vertical direction or the transverse direction, and repairing it by lifting the bridge beam or the deck using a hydraulic jack. However, such a conventional pulling device does not have a height adjustment function to adjust the height by overlapping the steel pipe and steel plate, and to raise the structure such as the bridge to work in an unstable state that causes a huge obstacle to the stability of the structure There was a problem.

In addition, the conventional jacks for bridge repairs employ a method in which a structure is pulled up by pressure by applying hydraulic pressure from a hydraulic pump.However, if the hydraulic pressure given at the time of pulling up has elapsed, the pressure inside the jack is caused by an external pressure such as a vehicle traffic. There was a problem that outflow to the outside caused the original can not maintain the planned height.

In addition, the conventional pulling device is a problem that damages the structure due to the lack of protection against the external pressure absorbed by the bridge device by performing the maintenance work after fixing only the lifting jack to the bottom of the PC beam, etc. during bridge repair work. There was this.

The present invention has been devised to solve such a conventional problem and defect, and can be adjusted by the height adjustment means of the screw-type height of the plunger assembly, and after the lifting, locking the plunger with the locking means of the locking means can not be lowered. It is possible to provide a device for raising a concrete structure to be able to safely and easily repair and reinforce the bridge by installing a synthetic bridge device at the upper end.

1 is an exploded perspective view showing main parts of a hydraulic pulling apparatus according to the present invention;

2a to 2d is a view showing the configuration and operation of the hydraulic lifting device according to the present invention,

Figure 2a is a cross-sectional view showing a form in which the hydraulic lifting device is inserted between the object to be lifted and the support element.

Figure 2b is a cross-sectional view showing a step of adhering the two-stage contact hole to the lower surface of the impression object by adjusting the height by the height adjustment means.

Figure 2c is a cross-sectional view showing the step of raising the variable pitch plunger assembly by supplying pressure oil to the hydraulic jack.

FIG. 2D is a cross-sectional view illustrating the step of locking with a lock to prevent the height-adjustable plunger assembly from lowering; FIG.

3A and 3B are explanatory views illustrating an example in which the raising work of the cross beam is high;

3A is an explanatory diagram illustrating a case where a synthetic teaching device is not used.

3B is an explanatory diagram illustrating a case where a synthetic teaching device is used.

4A and 4B are explanatory views illustrating an example in which the raising work of the cross beam is lowered;

4A is an explanatory diagram illustrating a case where a synthetic teaching device is not used.

4B is an explanatory diagram illustrating a case where a synthetic teaching device is used.

5A and 5B are explanatory views showing an example of the pulling operation of the PC beam.

5A is an explanatory diagram illustrating a case where a synthetic teaching device is not used.

5B is an explanatory diagram illustrating a case where a synthetic teaching device is used.

<Description of the reference numerals for the main parts of the drawings>

1: cylinder 2: plunger

3: plunger body 4: hydraulic jack

5: 1st stage contact hole 5A: Contact plate

5B: Thread 9: Locking Hole

10: locking means 11: measuring means

12: support 12A: fixture

13: dial gauge 13A: contact rod

14: two-stage contact 14A: contact plate

14B: screw portion 15: height adjustment means

16: socket

In order to achieve the above object, the lifting device for repairing a concrete structure according to the present invention includes locking means for locking the plunger raised to the cylinder of the hydraulic jack so as not to descend, and measuring the height of the lifting object lifted by the plunger. It comprises a measuring means for.

In addition, a two-stage contact hole is coupled to the upper portion of the plunger so that the height can be adjusted by the height adjusting means.

The locking means is configured by screwing a locking tool for stopping the movement by hanging the contact plate of the plunger, the measuring means is a fixture fixed to the outer peripheral surface of the cylinder, a support coupled to the fixture, and the support It is made of a dial gauge coupled to the upper end, the dial gauge is configured to be provided with a contact rod elastically contacting the lower surface of the impression object.

The plunger includes a plunger main body inserted into the cylinder and a first stage contact hole which is screwed to the plunger main body so that the height can be adjusted. An upper end of the first stage contact hole of the plunger is formed to have a close contact plate. The height adjusting means is screwed by a screw formed on the inner peripheral surface of the screw portion formed on the upper surface of the contact plate of the first stage contact hole and the screw portion formed on the lower surface of the contact plate of the second stage contact hole to rotate the socket. In accordance with the two-stage contact is configured to stretch.

Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is an exploded perspective view showing the main configuration of the hydraulic lifting device according to the present invention, Figure 3 is a longitudinal sectional view showing a state in which the hydraulic lifting device is installed, as shown in this, the hydraulic lifting device according to the present invention is a cylinder ( The hydraulic jack 4 in which the plunger 2 was couple | bonded with the inside of 1) is provided.

The plunger 2 is composed of a plunger body 3 inserted into the cylinder 1, and a first stage contact hole 5 coupled to the plunger body 3 so that the height can be adjusted. The plunger 2 5A of contact plates are formed in the upper end part of the 1st stage contact hole 5 of (). A pressure gauge 7 and an on / off valve 8 are coupled to the inlet pipe 6 coupled to the hydraulic port 1A of one side of the cylinder 1. A hose 6A for supplying pressure oil from a hydraulic pump (not shown) is connected to the inlet pipe 6 of the cylinder 1.

The outer circumferential surface of the cylinder 1 is coupled with a locking mechanism 9 for locking when the plunger 2 rises to a height necessary for work. The outer circumferential surface of the cylinder 1 is coupled with measuring means 11 for measuring the height at which the object to be pulled O is raised.

The plunger main body 3 and the first stage contact hole 5 of the plunger 2 are screwed to the inner circumferential surface of the plunger body 3 and the outer circumferential surface of the first stage contact hole 5, and are screwed to each other. 1) and the lock 9 is also screwed, the handle 9A is formed on the outer peripheral surface of the lock 9 so that the operator can hold and turn.

The plunger 2 has been described as the height adjustable coupling of the plunger body 3 and the first stage contact hole 5 in the above description, but if necessary, the plunger body 3 and the first stage contact hole 5 are It can be formed integrally. That is, the plunger main body 3 can be formed so that it may protrude a little, and the contact plate 5A may be integrally formed in the upper end part.

The measuring means 11 includes a fixture 12A fixed to the outer circumferential surface of the cylinder 1, a support 12 coupled to the fixture 12A, and a dial gauge 13 coupled to an upper end of the support 12. The dial gauge 13 is provided with a contact rod 13A which elastically contacts the lower surface of the object to be raised O.

The dial gauge 13 is coupled such that the contact rod 13A is supported upward through a spring (not shown), and the indicator needle (shown in the front part) is provided as the contact rod 13A moves up and down. Is rotated to point to the scale. As the support 12, a conventional one capable of supporting the dial gauge 13 so that the position can be changed back and forth, left and right is used.

The second stage contact hole 14 is coupled to the first stage contact hole 5 of the plunger 2 so that the height can be adjusted by the height adjusting means 15.

The height adjusting means 15 is formed on the lower surface of the screw portion 5B formed on the upper surface of the contact plate 5A of the first stage contact hole 5 and the contact plate 14A of the second stage contact hole 14. When the socket 16 is screwed into the threaded portion formed on the inner circumferential surface of the outer side of one threaded portion 14B, when the socket 16 is rotated in one direction, the two-stage contact hole 14 is raised upward. However, the contact hole 14 is lowered so that the height of the second stage contact hole 14 is configured to be adjusted up and down. A handle 16A is formed on the outer circumferential surface of the socket 16 so that an operator can hold and turn it.

In the figure, reference numeral P denotes a plunger assembly which is raised by supplying pressure oil to the hydraulic jack 4. That is, the plunger body 3 inserted into the cylinder 1, the first stage contact hole 5 coupled to the plunger body 3, and the first stage contact hole 5 coupled to the first stage contact hole 5 by the height adjusting means 15. The assembly of the two-stage contact 14 is shown.

Screws of the screw coupling portion to be applied in the above description can be made to have a trapezoidal cross-section to prevent wear and damage due to the lifting and locking of the large structure, in addition to the various forms of the cross-section of the screw can be formed.

Hereinafter, the operation of the hydraulic lifting device of the present invention as described above is as follows.

Figure 2a to 2d is a view showing the configuration and operation of the hydraulic lifting device according to the present invention, Figure 2a is a cross-sectional view showing the form of the hydraulic pulling device is inserted between the lifting object and the support element, Figure 2b is height adjustment A cross-sectional view showing a step of bringing the two-stage contact hole in close contact with the lower surface of the lifting object by adjusting the height by means, Figure 2c is a cross-sectional view showing a step of raising the variable plunger assembly by supplying pressure oil to the hydraulic jack, Figure 2d shows a cross-sectional view of the locking step to prevent the height-adjustable plunger assembly is lowered, respectively.

3A is an explanatory diagram illustrating a case where the synthetic teaching device is not used.

As shown in the drawing, in the case of using the hydraulic pulling apparatus of the present invention to raise the pulling object O such as a cross beam and a PC beam of a bridge, first, both ends of the pulling object O as shown in FIG. A plurality of hydraulic pulling apparatuses of the present invention are installed between supporting elements S such as piers.

Subsequently, as shown in FIGS. 2B and 3A, the socket 16 of the height adjusting means 15 is rotated to bring the contact plate 14A of the two-stage contact port 14 into close contact with the lower surface of the object to be raised O.

Thereafter, as shown in FIG. 2C, a plurality of hydraulic pulling apparatuses installed between both ends of the object to be lifted and the supporting element S are connected to the hydraulic pump, and the hydraulic oil pumped by the hydraulic pump is lifted through the hose 6A. Simultaneous injection into the hydraulic port 1A of the cylinder 1 of the device raises the pressure in the hydraulic chamber of the cylinder 1 and ascends the plunger assembly P including the plunger body 3 and the two-stage contact 14. The object to be raised O is raised.

At this time, the pumping work by connecting a plurality of hydraulic pulling apparatuses to the hydraulic pump is connected to each of the plurality of hydraulic pulling apparatuses and one hydraulic pump at both ends of the object to be lifted (O), respectively. The lifting is performed simultaneously with one hydraulic pump, and by doing so, the lifting object O can be lifted at the same time.

When the object to be raised O is raised in the above manner, the contact rod 13A of the dial gauge 13 is extended upward by the spring elasticity, and the indicator needle provided on the front of the dial gauge 13 rotates to indicate the scale. Since the height of the object to be raised O can be measured, the height of the object to be raised O can be measured as accurately as necessary while measuring the height of the object to be raised.

As described above, after the pulling object O is raised, as shown in FIG. 2D, the locking tool 9 of the locking means 10 is rotated so that the upper end thereof is placed on the bottom surface of the contact plate 5A of the first stage contact port 5. The close contact prevents the downward movement of the first stage contact hole 5, and when the movement of the first stage contact hole 5 is locked by the lock 9, the downward movement of the plunger assembly P is prevented to raise the object. The raised height of (O) remains stable.

In this way, after raising the object to be raised (O) to a certain height and locked with a lock (9), the replacement of the target device and other reinforcement work is carried out.

After the operation is completed, the lock 9 of the locking means 10 is rotated in the opposite direction to lower the original position, the hydraulic pressure of the hydraulic jack 4 is removed to lower the plunger assembly P, and the height adjusting means 15 ) Rotate the socket 16 in the opposite direction to lower the two-stage contact (14).

Thereafter, the hydraulic lifting device is dismantled and dismantled, and the work ends after tidying up.

FIG. 3B is an explanatory diagram illustrating an example of the operation in the case where the raising work of the cross beam is high and the synthetic teaching device is used. As shown therein, the two-stage contact port 14 of the hydraulic lifting device according to the present invention. It is to perform the operation by combining the composite teaching device 20 on the close contact plate (14A) of the) and the other configuration and working method is the same as the working example described by Figures 2a to 2d, and 3a above.

For the synthetic teaching device 20 may be used a teaching device created by the present applicant with a lubricity pad for teaching registered (Patent No. 141,550). In addition, depending on the shape, area, and condition of the bridge, various types of devices such as pivot bearings, high strength brass bearings, port bearings, pin bearings, rollers, pin rollers, pivots, rubber pads, neoprene bearing pads, etc. It can be used in combination.

4A and 4B are explanatory views illustrating a case in which the lifting operation of the cross beam is lowered and is lower. FIG. 4A is an explanatory diagram illustrating a case in which a compound teaching device is not used, and FIG. 4B illustrates a compound teaching device. 5A and 5B are explanatory views showing an example of the pulling operation of the PC beam, and as shown therein, the distance between the pulling object O and the supporting element S is shown. 1 and 2b, the hydraulic lifting device of the form formed by omitting the upper portion of the contact plate 5A of the one-stage contact port 5 in the embodiment shown in FIGS. A hydraulic lifting device formed by removing 5B, the socket 16 and the two-stage contact 14 is installed between the object to be raised O and the support element S, and the one-stage contact 5 is rotated. After the contact plate 5A is brought into close contact with the lower surface of the object to be raised O, the work to be made to raise the object O is performed. And other working methods are the same as the working examples described with reference to FIGS. 2A to 2D and 3A.

5A and 5B are explanatory diagrams showing an example of a PC beam pulling operation. FIG. 5A is an explanatory diagram illustrating a case in which a compound teaching device is not used, and FIG. 5B illustrates a case of using a compound teaching device. An explanatory view is shown, and in this case, the hydraulic lifting device described in FIGS. 4A and 4B is installed between the lifting object O and the supporting element S, and the lifting object O is raised. Is the same as the contents described with reference to FIGS. 4A and 4B.

As described above, the present invention is configured so that the height of the two-stage contact hole in the upper portion of the plunger of the hydraulic jack can be adjusted by the height adjusting means, so that the distance between the object to be lifted and the support element is variously installed and conveniently maintained, There is an advantage to reinforcement work.

In addition, after raising the plunger assembly, locking the plunger by the locking means of the locking means does not lower, there is an advantage that can maintain the raised object to be stable, accordingly, it is possible to safely and easily carry out maintenance and reinforcement work after the lifting. There is an advantage to that.

In addition, there is an advantage of preventing the breakage of the bridge due to the empty space of the bridge device in the lifting work for the bridge repair, reinforcement work by installing the composite bridge device on the upper end of the jack jack.

Claims (6)

delete In a conventional hydraulic jack having a plunger coupled to the cylinder, the plunger is provided with a locking means for locking the plunger so as not to lower after being raised by the hydraulic pressure acting inside the cylinder, the plunger body and the plunger body is inserted into the cylinder And, the height adjustment is screwed to the plunger body and consists of a first stage contact hole provided with a contact plate at the upper end, the locking means is a locking mechanism for stopping the movement by hanging the upper contact plate of the first stage contact hole of the cylinder Screwed outward, the lifting device for repairing a concrete structure, characterized in that configured. The apparatus of claim 2, wherein the second stage contact hole is provided on the upper portion of the plunger so that the height can be adjusted by a height adjusting means. delete 3. The apparatus of claim 2, further comprising: a fixture fixed to an outer circumferential surface of the cylinder; a support coupled to the fixture; and a dial gauge coupled to an upper end of the support; The contact rod is provided, the lifting device for repairing the concrete structure, characterized in that it further comprises a measuring means for measuring the raised height of the object to be pulled up by the plunger. According to claim 3, The height adjusting means is screwed to the outside of the screw portion provided on the upper surface of the contact plate of the first stage contact hole and the screw portion provided on the lower surface of the contact plate of the two-stage contact hole, the threaded portion formed on the inner circumferential surface, Lifting device for repairing the concrete structure, characterized in that the two-stage contact hole is configured to stretch as the socket is rotated.