JPS60253668A - Chimney cylinder push-up apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a chimney barrel lifting device for constructing a chimney.

Conventional configuration and its problems One method of constructing a chimney is to lift the first chimney barrel brought to the planned construction location, then insert the second chimney barrel under it, Next, there is a method of constructing a chimney by lifting the second chimney barrel, and then inserting a third chimney barrel under it, thereby pushing up the chimney barrels one after another. With this type of conventional method, the lifting member and the chimney barrel are fitted and removed manually, which is dangerous work at heights, takes time and effort, and increases construction costs. .

OBJECTS OF THE INVENTION It is an object of the present invention to provide a chimney barrel lifting device which eliminates the above-mentioned conventional drawbacks.

Structure of the Invention In order to achieve the above-mentioned object, the chimney barrel lifting device of the present invention has pillars erected at appropriate intervals around the area where the chimney is to be constructed, and a lifting rod supported by each pillar so as to be able to rise and fall. , a lower end of the lifting rod is provided with an engaging fitting that can be freely engaged with and detached from the retaining part of the chimney barrel, and a large number of pin holes are formed in the lifting rod at appropriate intervals along its longitudinal direction, A lower pin is movably disposed at an appropriate position on the column, a lower pin moving device is provided for fitting the lower pin into a pin hole of an elevating rod, an elevating cylinder is disposed at an appropriate position on the column, and a piston rod of the elevating cylinder is provided. An upper pin is movably disposed in the upper pin, and an upper pin moving device is provided for fitting the upper pin into the pin hole of the lifting rod.

Embodiment and its operation Hereinafter, one embodiment of the present invention will be described based on the drawings. (1
) is a steel tower, and (2) is a pair of chimneys constructed within the steel tower (1), which are constructed by pushing up a plurality of chimney barrels (2A). Each chimney barrel (2 people) has a plurality of rings (3) formed by welding two circular arc plates (3A) together as shown in Fig. 8(b) (cl). (3 pieces in this example) are stacked and welded together, and engaging pieces (3 pieces in this example) are placed on the outer peripheral surface of the lowermost ring (3) at appropriate intervals (120° in this example).
4) is formed by welding. (5) is a transport truck for transporting each chimney barrel (2A) to the planned chimney construction location in the steel tower (1), and is a guide rail (6).
) is movably arranged on the top. (7) are pillars that are erected at 120° intervals around the planned chimney construction location in this example, and include an upper shelf (7A) and a lower shelf (7B).
and has. (8) is the upper shelf part (7A) of each pillar (7)
and a lifting rod that passes through the lower shelf part (7B) in a vertically movable manner, and includes a pair of parallel vertical rod parts (8A) and a horizontal rod part that connects the upper ends of the vertical rod parts (8A) to each other. (8B). Also, the inner vertical rod part (8A)
Pin holes (9) are formed at appropriate intervals along the vertical direction. Reference numeral denotes a push-up frame fixed to the lower end of the lifting rod (8), and αυ is an arc-shaped engagement fitting disposed within the recess (6) of the frame αq so as to be movable in the direction of the arrow. A retaining groove is formed to engage with the engaging piece (4). (141 is a retaining cylinder whose main body is fixed to the push-up frame αQ and whose piston rod tip is connected to the engagement fitting (6); ), the through-holes formed on both sides of the lifting cylinder (aQ) are loosely fitted into the inner vertical rod part (8A) of each lifting rod (8) so that it can be raised and lowered, and both are connected to the piston rod of each lifting cylinder (to). This is a fixed lifting platform. In FIG. α Enoki is a semicircular guide frame that guides each upper pin α, and (B) is a pair of movable plates arranged in the center of the elevator platform αQ, which are fixed to the opposing upper pins (B). has been done.

2), the main body is fixed to the four corners of the lifting platform H, and the tip of the piston rod is attached to each movable plate? The upper pin moving cylinder is fixed to the end of η, the limit switch for confirming the removal of the upper pin is placed opposite the striker (c) fixed to each movable plate e1), and the upper pin moving cylinder is fixed to the end of each upper pin αη. This is a limit switch for confirming the insertion of the upper pin, which is placed opposite the tip of the upper pin. In FIG. 6, the lower pins are arranged so as to be movable in the direction of the arrow (C1 (D)) at the position facing each vertical rod (8A) on the lower shelf (7B); The semicircular guide frame that guides the lower pin wire, and the wire rods are a pair of movable plates arranged in the center of the lower shelf section (7B), and are fixed to the opposing lower pins (A). is a lower pin moving cylinder whose main body is fixed to the lower shelf (7T3) and whose piston rod tip is fixed to the end of each moving plate;
(31) is a striker c12 fixed to each moving board.
A limit switch for confirming the removal of the lower pin is disposed opposite to the lower pin, and a limit switch for confirming the insertion of the lower pin is disposed opposite to the tip of each lower pin. In Fig. 7, G~ is a switch mount whose lower end is rotatably disposed on the base eel on each upper shelf (7A) via a spindle ('17), and (C) is an elevator platform Qt9. The slider is fixed to the side surface of the switch mounting base (vertical groove 9 of 30) and is fit into the switch mounting base (vertical groove 9 of 30) so as to be able to rise and fall. There are limit switches for the upper limit, middle upper limit, middle lower limit, and lower limit, which are placed two each at the top and bottom of the switch mounting base facing the switch mounting base. This is a stroke detector consisting of a potentiometer attached to the switch mounting base (c), which is activated by the lifting and lowering of the lifter (4α) and detects the stroke of each lifting cylinder u9.
This is a stopper that supports the holder so that it does not fall over, and is removed when used for purposes other than those mentioned above. In addition, a limit switch (not shown) for the upper limit of the push-up frame is installed on one of the pillars (7), which activates when the push-up frame αq rises too much, stopping the operation of the pump and shutting down the lift cylinder. (
(to). In Fig. 3, (4"7) is a jack installed at the location where the chimney is planned to be constructed. By appropriately lifting the trolley (5), the chimney barrel (2 people) on it can be This is to align the matching piece (4) with the retaining groove (to). In Fig. 4, (c) is a safety nut that is screwed onto the piston rod (15A) of the lifting cylinder (to), When the hydraulic mechanism malfunctions and does not work,
When the chimney barrel (2A) is pushed up and fixed in position for a long period of time, the piston rod (1A) can be tightened.
5A) Prevents dripping.

Hereinafter, the effects of the above configuration will be explained.

First, construct the steel tower (1) in the order of (al to (e) in Figure 1).

Next, as shown in Fig. 1(f), Fig. 2, and Fig. 3,
Bring the cart (5) carrying the chimney barrel (2A) to the planned chimney construction location within the steel tower (1.
Lift the chimney barrel (2A) appropriately using the support truck (5) to match the heights of the engagement piece (4) and the retaining groove (13) (left side state in Figure 3).Next. Move the locking cylinder α in the direction of the arrow (5) to engage the locking groove in the locking piece (4).Next, FIG.
(to the upper pin moving cylinder) from the state of
Insert η into the pin hole (9) (Fig. 5 virtual line state)
. When each upper pin (17) is securely inserted into the pin hole (9), the upper pin insertion confirmation limit switch (to) is turned on. Next, in response to the output signal of the limit switch (a), the piston rod (15A) of the lifting cylinder αυ is extended, the cylinder body (2A) is lifted by one pitch (state in Fig. 10 (b)), and the piston rod (15A) of the lifting cylinder αυ is extended. When the frame hits the upper limit switch 1), the output signal stops the extension of the piston rod (15A) and at the same time activates the lower pin moving cylinder (7) so that the lower pin moves into the pin hole (9). It is inserted inside. When each lower pin wire is securely inserted into the pin hole (9), the limit switch for confirming that the lower pin bottoms out is turned on, and its output signal causes the piston rod (
15A) is reduced, the kicker (40) hits only the middle and upper limit switch ■, and the output signal stops the extension of the piston rod (15A) (10th
(C) state), the upper pin α is positioned approximately at the center of the pin hole (9). In addition, the upper pin moving cylinder @ is operated by the output signal of the middle and upper limit switch z, and the upper pin (17) is pulled out from the pin hole (9), and the striker @ is activated by the upper pin removal confirmation limit switch @ , the output signal activates the lifting cylinder αO, and the piston rod (15A) is contracted (state in Fig. 10 (d)).Next, when the kicker body hits the lower limit switch, the output The signal causes the operation of the lifting cylinder afJ to be stopped, and the upper pin moving cylinder (a) to be activated, so that the upper pin αη is inserted into the pin hole (9). Next, when the upper pin Q is securely inserted into the pin hole (9), the upper pin insertion confirmation limit switch (4) is turned on, and its output signal is transmitted to the piston rod ( 15A) is extended, and when the tensioner hits only the middle and lower limit switches (15A), the output signal stops the operation of the lifting cylinder (Fig. 10(e)).
state), the lower pin is positioned approximately in the center of the pin hole (9).

In addition, the lower pin moving cylinder ■ is activated by the output signal of the middle and lower limit switch (4), the lower pin (B) is pulled out from the pin hole (9), and the striker (C) is pulled out of the lower pin. When the confirmation limit switch (3I) is hit, the lift cylinder (to) is activated by its output signal, and the piston rod (15A) is extended.
The barrel (two people) is lifted by one pitch (Fig. 10 (f)
)situation). When the above operation is reversed and the cylinder (two people) is pushed up the entire pitch as shown on the right side of Figure 3, the next cylinder (two people) is moved to the planned chimney construction site by the cart (5). The same action is repeated again and the cylinder body (2A)
is pushed up, and one chimney (
Once chimney 2) is constructed, the other chimney (2) can be constructed in the same manner as above, as shown in (h) of the same figure. In addition, when the cylinder body (2A) is pushed up, the stroke of the piston rod (15A) of each lifting cylinder aυ is detected by the stroke detector (451), and the detected values differ by more than a predetermined value. Sometimes, the extension of the piston rod (15A) that is too extended is temporarily stopped, or the contraction of the piston rod (15A) that is too short is temporarily stopped, so that the difference between the detected values is controlled to fall within a predetermined range. The device automatically controls the lifting cylinder σ.
Make sure that no unbalanced load is applied to 0. In addition, if even one of the limit switches does not operate, the control device will stop the operation. In this case, the operator should check the cause of the non-operation, I scowled at safety.

Next, when dismantling the chimney (2), use (a) in Figure 11.
The cylinder body (2A) is lowered in the order shown in (f), and then disassembled in the reverse order of the pushing-up procedure described above.

Effects of the Invention As described above, according to the present invention, all the work of pushing up the chimney barrel is done mechanically, making it possible to achieve significant labor savings compared to the conventional method, and also to reduce the need for work in high places. As the work is abolished, safety is high, work can be carried out quickly, and construction costs can be reduced.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Figures 1(a) to (hl are process charts showing the construction procedure of a chimney, Figure 2 is a plan view of the main parts,
Figure 3 is a view from the I-1 arrow in Figure 2, and Figure 4 is a view from W- in Figure 3.
IV arrow view, Figure 5 is a plan view of the vicinity of the upper pin, Figure 6 is a plan view of the vicinity of the lower pin, Figure 7 is a partially cutaway side view of the vicinity of the switch mounting base, and Figures 8 (a) - (c) is a perspective view showing the procedure for forming the chimney barrel, FIG. 9 is a hydraulic circuit diagram, and FIGS. 10(a) to (f) are explanatory diagrams showing the procedure for pushing up the chimney barrel,
FIG. 11 (al to (fl) are explanatory diagrams showing the procedure for lowering the chimney barrel. (1)... Steel tower, (2)... Chimney, (2A)...
Chimney barrel, (4)...engaging piece, (7)...post, (8)...lifting rod, (9)...pin hole, θυ...
・Holding metal fitting, q uniform...lifting cylinder, Qη...upward pin, 4...upward pin moving cylinder, (b)...downward pin, (7)...downward pin moving cylinder agent Yoshihiro Morimoto Figure 1 (e) (f) Figure 1 d (<) Figure 2) Figure 3 ■ Figure S 16 Figure 2 So Figure 7

Claims (1)

[Claims] 1. Set up pillars at appropriate intervals around the planned chimney construction site, and install a lifting rod supported by each pillar so that it can be raised and lowered,
A retainer is provided at the lower end of the lifting rod that can be freely engaged and detached from the engaging part of the chimney barrel, and a large number of pin holes are formed at appropriate intervals along the longitudinal direction of the lifting rod, so that the support can be placed in the appropriate position. A lower pin is movably disposed in the column, a lower pin moving device is provided to fit the lower pin into the bottle hole of the lifting rod, a lifting cylinder is placed at an appropriate position on the column, and the upper pin is attached to the piston rod of the lifting cylinder. What is claimed is: 1. A chimney barrel pushing device, characterized in that a chimney barrel pushing device is provided with an upper pin moving device for movably disposing the upper pin and fitting the upper pin into a bottle hole of a lifting rod.