JP4491155B2 - Construction adjustment device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of an erection adjustment device that is used for rebuilding when a steel pillar is erected in constructing a structure.
[0002]
[Prior art and its problems]
As is well known, the pillars constituting the structure approximately ensure a vertical state when it is erected, that is, when it is erected, which is referred to as rebuilding, but constitutes a steel structure. In recent years, it is assumed that a dedicated building adjustment device is used for rebuilding a steel column, and various proposals have been made regarding this building adjustment device.
[0003]
And many erection adjustment apparatuses enable the connection in a state where the main body portion is bridged at, for example, so-called four corners of the upper end portion of the lower column body and the lower end portion of the upper column body both made of H-shaped steel. It is configured as described above, and by expanding and contracting itself, so as to selectively raise and lower the four corners of the upper column that becomes the movable side, to ensure the vertical state in the upper column, that is, to rebuild Yes.
[0004]
Also, when looking at the actual situation of the work using this erection adjustment device, the work becomes a so-called high-altitude work, so this erection adjustment device is lightweight and easy to carry. In many cases, it is configured to be operable by a manual operation by an operator.
[0005]
However, the column bodies constituting the steel structure in recent years tend to be lengthened, and therefore the weight of the column bodies increases, so that in the construction adjustment devices that have been proposed so far, the desired rebuilding can be performed. It may be pointed out that there is a risk that it cannot be carried out reliably.
[0006]
That is, the erection adjustment device proposed so far is of course configured to facilitate manual operation by the operator, but in line with the demand for light weight and ease of carrying, In many cases, the constituent members are formed as lightly as possible.
[0007]
And from this, in the conventional erection adjustment device, the situation in which the mechanical strength of the constituent members is insufficient is developed, and cannot be used for the erection in the columnar body that is long and heavy. Moreover, if the mechanical strength of the constituent members is increased and the structure is made usable, the size is increased and the weight is increased, so that it is unsuitable for carrying, and there is a concern that it cannot be easily operated by human power.
[0008]
The present invention was devised in view of the above-described circumstances, and the object of the present invention is that it can be carried by human power while being portable, as well as in an elongated steel column. An object of the present invention is to provide an erection adjustment device that can be reliably rebuilt by utilizing oil pressure and is optimal for expecting an improvement in versatility.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the structure of the present invention is basically connected to the upper end portion of the lower column body and the lower end portion of the upper column body joined to the lower column body, and the upper column is expanded and contracted. The body part that secures the vertical state in the body is inserted into the cylinder body so that the rod body can be inserted and retracted, and is installed in a hydraulic cylinder shape in which the rod body is raised and lowered with respect to the cylinder body by supplying and discharging oil. In the apparatus, the cylinder body has a piston connected to the rod body, and has an oil supply / discharge mechanism that enables supply and discharge of selected oil to and from the pressure chamber and back pressure chamber defined in the cylinder body. The oil supply / discharge mechanism is a tank formed of a chamber formed in a handle connected to the cylinder body, and the pressure chamber in the cylinder body and the oil held in the cylinder body by manual operation of the oil from the tank. Vomiting toward the back pressure chamber A pump that supplies the oil from the pump to the pressure chamber in the cylinder body or discharges the oil in the pressure chamber, and the oil from the pump that is manually operated from the outside. It is assumed that a back pressure chamber control valve for supplying to the back pressure chamber in the body or discharging the oil in the back pressure chamber is provided.
[0010]
In the above-described configuration, more specifically, in the oil supply / discharge mechanism, each of the pressure chamber control valve and the back pressure chamber control valve has a supply position and a discharge position. The oil is supplied to the pressure chamber or back pressure chamber while the discharge position has a check valve that does not allow oil from the pump to pass toward the pressure chamber or back pressure chamber. Assume that a variable throttle is provided in parallel to allow oil from the pressure chamber or the back pressure chamber to flow into the tank.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In the following, the present invention will be described based on the illustrated embodiment. However, as shown in FIG. As with the adjusting device, erection pieces E1, E2 made of a single plate-like body integrally connected to the so-called four corners at the upper end of the lower column P1 and the lower end of the upper column P2 by welding or the like. Is used to realize the connection to the lower column P1 and the upper column P2.
[0012]
Therefore, even in this erection adjustment device, it has brackets B1 and B2 formed in a bifurcated shape at the lower end and the upper end of the main body, and these brackets B1 and B2 are connected to the above-described erection pieces E1 and E2. It is supposed that it connects so that isolation | separation is possible using appropriate connecting tools C, such as a connection pin.
[0013]
That is, as shown in FIG. 2, the main body constituting the erection adjusting device allows the rod body 2 to be inserted into and retracted from the cylinder body 1, and the rod body to the cylinder body 1 by supplying and discharging oil. In this case, the cylinder body 1 has a bracket B1 at the lower end and the rod body 2 has a bracket B2 at the upper end.
[0014]
The cylinder body 1 constituting the main body is configured to include a pressure chamber R1 that is slidably accommodated in the cylinder body 1 and is partitioned in the cylinder body 1 by a piston 3 connected to the rod body 2. It has a back pressure chamber R2 and an oil supply / discharge mechanism 4 that enables supply and discharge of selected oil to and from the pressure chamber R1 and the back pressure chamber R2.
[0015]
As described above, according to the present invention, since the oil supply / discharge mechanism 4 is integrally provided in the cylinder body 1 constituting the main body portion in the erection adjustment device, the oil supply / discharge operation is performed when the erection adjustment device is used. It is advantageous in that it is possible to avoid problems such as carrying equipment together or connecting to oil supply / drainage devices that are separated and placed separately.
[0016]
By the way, in the illustrated embodiment, the main body is configured as a double-acting type having a pressure chamber R1 as a piston side chamber and a back pressure chamber R2 as a rod side chamber in the cylinder body 1. Thus, the expansion / contraction control in the main body can be made possible regardless of the presence or absence of a load.
[0017]
By the way, the oil supply / discharge mechanism 4 has a tank T formed of a chamber (not shown) formed in a handle H (see FIG. 1) connected to the cylinder body 1 and is held by the cylinder body 1. It has a pump P that discharges oil from the tank T toward the pressure chamber R1 and the back pressure chamber R2 in the cylinder body 1 by manual operation from the outside, and oil from the pump P by manual operation from the outside. It has a pressure chamber control valve 5 for supplying to the pressure chamber R1 in the cylinder body 1 or discharging the oil in the pressure chamber R1, and the back pressure chamber in the cylinder body 1 is supplied with oil from the pump P by manual operation from the outside. It has a back pressure chamber control valve 6 that supplies to R2 or discharges oil from the back pressure chamber R2.
[0018]
As described above, the tank T is formed of a chamber formed in the handle H connected to the cylinder body 1, so that the tank T can be provided integrally with the main body, and the tank T is separated from the separate body. This is advantageous in that it does not cause the trouble of carrying the tank T together with the main body part, and does not cause the trouble of connecting the tank T to the main body part with a hose.
[0019]
And it can be said that it is the same in that the pump P is held by the cylinder body 1 so as not to cause trouble when carrying the main body.
[0020]
Incidentally, in this oil supply / discharge mechanism 4, the hydraulic pressure in the oil from the pump P is a relief valve disposed in the drain passage D communicating with the tank T on the downstream side of the pump P, as shown in FIG. 3. 7 and the pressure control valve 5 and the back pressure control valve 6 have supply positions 5a and 6a and discharge positions 5b and 6b, respectively, which are switched by an external operation.
[0021]
At this time, the supply positions 5a and 6a are set so that oil from the pump P can be supplied to the pressure chamber R1 or the back pressure chamber R2, but the discharge positions 5b and 6b are supplied from the pump P. Check valves 5c and 6c for preventing oil from passing toward the pressure chamber R1 or the back pressure chamber R2, and in parallel with the check valves 5c and 6c, from the pressure chamber R1 or the back pressure chamber R2. It has variable throttles 5d and 6d that allow the oil of the oil to flow out into the tank T.
[0022]
Incidentally, the variable throttles 5d and 6d may of course be fixed throttles. In this case, a so-called valve configuration is simplified, which is advantageous in reducing the cost.
[0023]
2 and 3, a check valve C1 is disposed between the pump P and the tank T to prevent oil from the pump P from escaping into the tank T, and the pump P and the pressure chamber. A check valve C2 is disposed between the control valve 5 and the back pressure chamber control valve 6 to prevent the oil from the control valves 5 and 6 from flowing back to the pump P.
[0024]
Thus, not only the tank T and the pump P described above but also the pressure chamber control valve 5 and the back pressure chamber control valve 6 are integrally provided in the cylinder body 1, as described above. This is advantageous in that it does not cause the trouble of carrying a controller or the like when carrying.
[0025]
The pump P, the pressure chamber control valve 5 and the back pressure chamber control valve 6 are configured so as to be operated by manual operation from the outside, so that a so-called drive source such as a battery becomes unnecessary, and the use place is not limited. Needless to say, the configuration for using such a drive source is not necessary, which is advantageous in that the weight can be reduced and the cost can be reduced.
[0026]
Therefore, the erection adjustment device formed as described above is used as follows.
[0027]
That is, first, when the building adjustment device is transferred to a predetermined place, it is manually transported using the handle H provided in the main body.
[0028]
Next, in the erection adjusting device conveyed to a predetermined position, the upper and lower ends of the main body are connected to the erection pieces E1 and E2 in the upper column P1 and the lower column P2 via the brackets B1 and B2. It connects using the coupler C, such as.
[0029]
At this time, the erection adjustment device is usually arranged in a state where it is bridged at so-called four corners of the lower column P1 and the upper column P2, that is, in four places in plan view.
[0030]
Moreover, in each erection adjustment device, it is preferable to adjust the main body portion to an appropriate length in advance so that the upper and lower brackets B1, B2 in the main body portion are easily aimed at the upper and lower erection pieces E1, E2. At that time, the next pump P, the pressure chamber control valve 5 and the back pressure chamber control valve 6 are manually operated.
[0031]
Incidentally, this expansion / contraction operation is of course the same as the operation executed during the so-called main operation in which each of the erection adjusting devices arranged at the predetermined positions is subjected to expansion / contraction adjustment to obtain the verticality in the upper column body P2. It is.
[0032]
First, when the main body is extended, the pressure chamber control valve 5 is maintained at the supply position 5a shown in FIG. 3 and the back pressure chamber control valve 6 is maintained at the discharge position 6b shown in FIG. From this state, the pump P is manually operated, that is, the operation lever L is moved to perform the pumping operation.
[0033]
When the pump P is driven, the oil from the tank T becomes pressure oil and is supplied to the pressure chamber R1 in the cylinder body 1 via the pressure chamber control valve 5 at the supply position 5a, so that the pressure chamber R1 expands. It becomes like this.
[0034]
At this time, the oil in the back pressure chamber R2 in the cylinder body 1 is discharged to the tank T through the back pressure chamber control valve 6 at the discharge position 6b, that is, through the variable throttle 6d. R2 contracts.
[0035]
By the way, if the so-called valve opening degree in the variable throttle 6d is adjusted to be wide or narrow, the oil discharge rate from the back pressure chamber R2, that is, the contraction rate of the main body can be adjusted.
[0036]
As a result, the main body portion extends, and after the main body portion reaches a predetermined extended state, the pumping operation in the pump P is stopped, and the back pressure chamber control valve 6 is also stopped. Is switched to the supply position 6a.
[0037]
Incidentally, at this time, the pressure chamber control valve 5 is maintained in the supply position 5a.
[0038]
By switching to the supply position 6a in the back pressure chamber control valve 6, the back pressure chamber R2 communicates with the pump P. As described above, the check valve C2 is disposed on the so-called downstream side of the pump P. The oil in the back pressure chamber R2 is prevented from flowing back to the pump P.
[0039]
Further, even in the pressure chamber control valve 5, since the supply position 5a remains, the check valve C2 can also prevent the oil in the pressure chamber R1 from flowing back to the pump P. As a result, the main body portion Is maintained in a predetermined stretched state.
[0040]
Then, in the case of contracting the body portion in FIG. 3, switches the pressure chamber control valve 5 to discharge position 5 b, after switching the back-pressure chamber control valve 6 to the supply position 6a, the operating lever of the pump P Pump with L.
[0041]
Oil from the tank T by driving the pump P is supplied to the back pressure chamber R2 in the cylinder body 1 through a back-pressure chamber control valve 6 in the supply position 6 a becomes pressurized oil, therefore, the back pressure chamber R2 Will expand.
[0042]
At this time, the oil in the pressure chamber R1 in the cylinder body 1, via the pressure chamber control valve 5 in the discharge position 5 b, i.e., is discharged to the tank T via the variable throttle 5d, therefore, the pressure chambers R1 Shrink.
[0043]
As a result, the main body portion contracts, and after the main body portion is in a predetermined contracted state, the pumping operation in the pump P is stopped, and the pressure chamber control valve 5 is Switch to supply position 5a.
[0044]
Incidentally, at this time, the back pressure chamber control valve 6 is maintained in the supply position 6a.
[0045]
By switching to the supply position 5a in the pressure chamber control valve 5, the pressure chamber R1 is in communication with the pump P. However, as described above, the oil in the pressure chamber R1 is prevented from flowing back to the pump P. .
[0046]
Further, even in the back pressure chamber control valve 6, since the supply position 6a remains, the check valve C2 also prevents the oil in the back pressure chamber R2 from flowing back to the pump P. As a result, the main body portion contracts to a predetermined degree. The state will be maintained.
[0047]
By executing the above expansion and contraction operation in each of the building adjustment devices, that is, in each of the building adjustment devices distributed in the so-called four corners of the lower column body P1 and the upper column body P2, the lower column It is possible to secure the vertical state in the upper columnar body that is joined to the body, that is, to rebuild the building.
[0048]
In particular, in the present invention, the main body portion is formed in a double-acting hydraulic cylinder shape, so that not only the main pressure chamber R1 can be expanded and contracted, but also a back pressure chamber as a sub-state. Since the expansion and contraction in R1 is also possible, the contraction of the main body can be realized regardless of the presence or absence of a load as compared with the case where the contraction of the main body can be realized only by the contraction in the pressure chamber R1. This is advantageous in that the re-installation of the upper column body can be realized quickly.
[0049]
In the above description, the present invention has been described as an erection adjusting device that is used for an operation called rebuilding in the construction of a structure. However, taking into consideration the gist of the configuration, it is embodied in, for example, a jack. Needless to say, the effects of this case are not different.
[0050]
Contrary to what has been described above, when the lower column P1 is connected to the upper column P2 in the vertical state, that is, when it is suspended in the vertical state, the use of this erection adjusting device is also useful. Of course, it becomes possible, and in this case, the effect is the same.
[0051]
【The invention's effect】
As described above, according to the present invention, since the oil supply / discharge mechanism is integrally provided in the cylinder body constituting the main body portion of the erection adjustment device, when using the erection adjustment device, this is the case. There is an advantage that it is not necessary to carry separately the oil supply / discharge devices connected to the.
[0052]
At this time, in the present invention, it is assumed that the main body is formed in a double-acting hydraulic cylinder shape, so that not only the main pressure chamber can be expanded and contracted, but also the expansion in the back pressure chamber, which is the sub-chassis. Since the contraction is also possible, the contraction of the main body can be realized regardless of the presence or absence of the load as compared with the case where the contraction of the main body can be realized only by the contraction in the pressure chamber. There is an advantage that the rebuilding of the column body can be realized quickly.
[0053]
In the present invention, since the tank is composed of a chamber formed in a handle connected to the cylinder body, the tank is a separate body, and the troublesomeness of carrying the tank together with the main body portion. In addition, there is an advantage that there is no inconvenience such as connecting the tank to the main body with a hose.
[0054]
Further, in the present invention, the pump can be operated manually and is held by the cylinder body. In addition, the pressure chamber control valve and the back pressure chamber control valve are also integrally disposed in the cylinder body. Therefore, it is advantageous in that it does not cause troublesomeness due to carrying a controller or the like when carrying the main body.
[0055]
In addition, the pump, the pressure chamber control valve, and the back pressure chamber control valve are configured to be operated by manual operation from the outside, so that a so-called drive source such as a battery becomes unnecessary, and the use place is not limited. As a matter of course, there is no need for a configuration for using such a drive source, and there is an advantage that the weight can be reduced and the cost can be reduced.
[0056]
As a result, according to the present invention, not only can it be carried by manpower while being portable, it can be reliably realized by using hydraulic pressure to rebuild the steel column that is to be lengthened, It is most suitable for expecting the improvement of the versatility.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which an erection adjusting device according to an embodiment of the present invention is connected to an upper column and a lower column.
FIG. 2 is a front view of the erection adjusting device of FIG.
FIG. 3 is a circuit diagram showing an oil supply / discharge mechanism in the erection adjustment device of FIG. 1;
[Explanation of symbols]
1 Cylinder body 2 Rod body 3 Piston 4 Oil supply / discharge mechanism 5 Pressure chamber control valve 5a, 6a Supply position 5b, 6b Discharge position 5c, 6c, C1, C2 Check valve 5d, 6d Variable throttle 6 Back pressure chamber control valve 7 Relief Valve B1, B2 Bracket C Connector E1, E2 Erection piece H Handle P Pump P1 Lower column P2 Upper column T Tank R1 Pressure chamber R2 Back pressure chamber
L Control lever

Claims (2)

  Connected to the upper end of the lower column and the lower end of the upper column joined to the lower column, the main body that secures the vertical state of the upper column by its expansion and contraction allows the rod body to appear and disappear from the cylinder body In the erection adjustment device formed in the shape of a hydraulic cylinder that allows the rod body to be inserted into and retracted from the cylinder body by supplying and discharging oil, the cylinder body is divided into the cylinder body by a piston connected to the rod body. And an oil supply / discharge mechanism that enables supply / discharge of selected oil to / from the pressure chamber and the back pressure chamber. The oil supply / discharge mechanism is formed in a handle that is connected to the cylinder body. And a pump that is held in the cylinder body and discharges oil from the tank toward the pressure chamber and back pressure chamber in the cylinder body by manual operation from the outside, and oil from the pump by manual operation from outside Cylinder A pressure chamber control valve that supplies or discharges oil in the pressure chamber, and oil from the pump is supplied to the back pressure chamber in the cylinder body by manual operation from the outside, or oil in the back pressure chamber is discharged. An erection adjustment device comprising a back pressure chamber control valve for discharging   In the oil supply / discharge mechanism, the pressure chamber control valve and the back pressure chamber control valve each have a supply position and a discharge position so that the supply position can supply oil from the pump to the pressure chamber or the back pressure chamber. On the other hand, while the discharge position has a check valve that does not allow oil from the pump to pass toward the pressure chamber or back pressure chamber, oil from the pressure chamber or back pressure chamber is placed in the tank in parallel with this check valve. The erection adjustment device according to claim 1, further comprising a variable throttle for allowing the outflow.

Images