JPS59150858A - Concrete distributor - 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 The present invention relates to a concrete destroyer suitable for use in constructing medium to high-rise concrete structures. ``When constructing medium-to-high-rise concrete structures such as nuclear reactor buildings and general buildings, a concrete destroyer as shown in Figure 1 has conventionally been used. This distributor is constructed by adding and attaching the required number of vertical pipes 2a to 2n for feeding fresh concrete to a concrete structure (hereinafter referred to as a building) a under construction, and attaching the required number of horizontal pipes 3a to the upper part of the building a. 〜377L and install it, first connect the hose 5 to the connection port 4aK of the horizontal pipe 3a at the back of building a, and then pump the fresh concrete of concrete pump 1 from the hose 5 to the concrete pouring area such as a wall. Then, the horizontal pipe 3a is separated from the horizontal pipe 3b, the hose 5 is connected to the connection port 4bK, and the process of supplying ready-mixed concrete to the next part is repeated, and concrete is poured on that floor. Once this was completed, the vertical pipes would be added and the same work as above would be carried out. However, this method requires frequent horizontal inspection of feeding fresh concrete, disassembly of vertical pipes, addition of joints, and work of attaching and detaching hoses, resulting in a heavy burden on the worker and poor work efficiency.

Further, if there is an obstacle C such as a wall near the building A, there is a drawback that it becomes difficult to arrange the conduit without pouring concrete.

The present invention has been made in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a concrete destroyer that can perform concrete pouring work efficiently and can also perform work easily even when there are obstacles near a building. purpose.

In order to achieve this objective, the concrete destroyer of the present invention has a sliding frame attached to the mast so that it can be raised and lowered by an elevating device, and a rotating body installed on the sliding frame so as to be able to freely rotate around the mast via a swivel ring. 3 on the rotating body.
A multi-joint arm is attached, which is a combination of more than one arm that can be rotated by a rotary drive device provided correspondingly to each arm, and the multi-joint arm is made of ready-mixed concrete from the ground.
``a Np +<--1e? The present invention is characterized in that a feeding pipe is supported by and attached to the multi-jointed arm.

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 2, the concrete destroyer of this embodiment has a mast that is erected near a building by fixing the legs 6a, and is assembled by adding pieces of unit length according to the height of the building. 6, a slide frame 7 mounted to be movable up and down so as to surround the mast, and the slide frame 7
A lifting device for the slide frame including a lifting winch 8 installed above, and a mast 6 mounted on the slide frame 7 via a turning ring 9.
A multi-jointed structure formed by rotatably combining a revolving body 10 mounted on the revolving body 10 and three or more (three in this embodiment) arms lla to 11C mounted on the revolving body 10. An arm 11, hydraulic cylinders 12a to 12d serving as arm rotation drive devices for each joint, a ready-mixed concrete feed pipe 13 attached to the multi-joint arm 11, and a driver's seat installed on the revolving body 10. It consists of 26.

The mast 6 of this embodiment has a lattice-like configuration with a rectangular planar shape. That is, as shown in FIG. 3, a plurality of furnace frames 15 are erected with vertical intervals between adjacent ones of four vertical columns 14 each having a connecting seat 1.4a at the upper and lower ends. However, between the horizontal frames 15 and 15, two pierced frames 16 are connected at their upper ends to the middle part of the upper horizontal frame and at their lower ends to the joint between the horizontal frame 15 and the vertical column 14. Therefore, the structure is constructed such that the load is distributed, and the addition of unit masts is carried out by aligning the connecting seats 14a and connecting them with bolts and nuts.

The slide frame 7 is also made of a similar combination of vertical columns, horizontal frames, and crushers, and is provided with guide rollers 160 (see Fig. 4) and sliding members for rolling along the vertical columns 14 of the mast 6 inside. A gap is provided between the slide frame 7 and the mast 6.

As shown in FIG. 4, the mounting structure of the swivel ring 9 installed on the upper end of the slide frame 7 is such that it swivels to a flange 17 fixed to the second part of the second part of the cylindrical body 104 of the slide frame 7. An inner ring 9b on which the outer ring 9a of the ring 9 is mounted and fixed by bolts 18 and nuts 19 and rotatably supported inside the outer ring 9a.
Place the lower frame 10a of the revolving body 10 on top and tighten the bolts 2.
0 and nuts 21. The rotating body 10 has circular holes 22, 2 in both the lower frame 10a and the upper frame iob.
3 is provided, and the mast 6 passes through each of the circular holes 22 and 23 in a non-contact manner. A portion of the lower frame 10a of the revolving body 10 extends outward to form a motor mounting flange 1.
．． A turning motor 24 with a speed reducer is mounted on the rotating motor 24, and a pinion 25 that meshes with an external gear integrated with the outer ring 9a is attached to the output shaft of the turning motor 24, and the rotation of the motor 24 moves the turning structure 10 to the mast. The mechanism for raising and lowering the rotating body 10 and the slide frame 7 is configured as follows. At the bottom of the slide frame 7 is a circular stand 28.
A winch 8 is installed on the stand 28. As shown in FIG. 3, two opposing horizontal frames 15 at the top of each mast 6, that is, front and rear or left and right horizontal frames 15
A pin hole 30 is provided in the center of the sheep block, and as shown in FIG. 32.33 is fitted onto the top of the mast 6, and the pin 35 is inserted into the pin hole 31.30 together with the bracket 115 of the sheep 116 for the safety rope 117.
It is removably installed by inserting it into the Furthermore, pin hole 3
In some cases, o is omitted and the pin 35 is placed on the horizontal frame 15 for engagement.

On the other hand, each sheave block 32° 33 of the slide frame 7
Sheep blocks 36 and 37 are respectively attached to the same surface of the lifting winch 8, and one of the two lifting ropes 38 and 39 which are wound and let out by the lifting winch 8 is attached. In other words, the rope that is hung from the winch 8 to the sheep block 32 on the same side as this is connected from the winch 8 to the sheep block 32 as shown in FIG.
A guide roller 40 is installed on the slide frame 7 to guide the rope 38 so that the part on the way to the sheep block 2 does not come into contact with the mast 6, the slide frame 7, and the revolving body 10. The gap between the slide frame 7 and the revolving body 10 and the mast 6 are inserted into the gap between them in a non-contact manner, and the end is connected to the slide frame 7. The other rope 39 is attached to the 4
The guide sheaves 41 to 44 are arranged so as to surround the mast 6 in a non-contact manner, and also to reach the slide frame 7 and the revolving structure 10 without contact.
7 is inserted into the gap between the slide frame 7 and the revolving body 10 and the mast 6 in a non-contact state, and the terminal end is connected to the slide frame 7.

Next, the multi-jointed arm 11 and the ready-mixed concrete feeding pipe line 13 will be explained. Among the arms 11 attached to the rotating body 1o, the first stage arm 11a has a bifurcated base attached to a hollow shaft 51 attached to a bracket 50 fixed on the rotating body 10, as shown in FIG. Fit the mounting hole 52 at the end so that it can rotate, insert the straight pipe 13a for feeding fresh concrete into the hollow shaft 51, and rotate it to the inlet side and outlet 1] side of the pipe 1.3a, respectively. The bent pipes 13b' and 1:3c are connected via joints 54 and 55.

The rotating joints 54 and 55 are constructed by connecting two semicircular tightening rings 57 and 57' with bolts 58 and nuts 59 to the outside of a nut ring 56 that covers the outer periphery of the flange at the abutting portion of each pipe. It is something that is covered. Figures 2 and 6
As shown in the figure, a bracket 60 fixed to the front part of the revolving body 10 and the first stage arm 11. The bracket 61 attached to the hydraulic cylinder 12a is connected to the hydraulic pressure 7 cylinder 12a 6 (Tommy law and Ronodoi law) by pins 62 and 63, respectively, for rotating the first stage arm Ila. The stage arm 11a stands tall so that it can be rotated (raised and lowered).

A second stage arm llb is rotatably connected to the distal end of the first stage arm 11a via a hollow shaft 64, and the connecting portion is also drawn in the same manner as the aforementioned connecting portion at the base end of the first stage arm 11a. structure is adopted. A portion e of the second stage arm from the connection part with the first stage arm 11a to the rear end has a certain length, and the rear end of the second stage arm 1.1b and the A hydraulic cylinder 12b and a rod 6 integrated with the bottom side of the hydraulic cylinder 12b are connected between the bracket 50 and a bracket 65 fixed to the rear of the bracket 50, and the tip of the rod 66 is connected to the rear end of the first stage arm Ilb. The piston rod of the hydraulic cylinder 12b is connected to the bracket 65 by a pin 68, thereby providing interposition. and hydraulic cylinder 12. In the extended state of b,
As shown in FIG. 2, the second stage arm 11b is bent,
When the hydraulic cylinder 12b is in the contracted state (during operation),
As shown in FIG. 6, the first stage arm llb is horizontal, the line connecting the hollow shaft 50.64 and the pins 67, 6.8 forms a square quadrilateral, and the inclination angle β ( 7th
Regardless of whether the first stage arm 11 is
A can be made horizontal.

At the tip of the second stage arm llb, there is a first stage arm llc.
A hollow shaft 70 with a slight length of the molecule left at its rear end.
In order to increase the 1f movement range of the third stage arm 11C, two hydraulic cylinders 12c and '12d are provided for rotation of the third stage arm 11c, and the second stage arm llb is equipped with two hydraulic cylinders 12c and '12d. An arm 71 for regulating the expansion/contraction direction of the hydraulic cylinder is rotatably attached by a pin 72, and one hydraulic cylinder 12c is connected to the second stage arm llb and the arm 7.
A hydraulic cylinder 12d is connected and interposed between the arm 71 and the rear end of the third stage arm 1lcO by a pin 74.75. , 12d are both extended (as shown in FIG. 2), the third stage arm 1'lc is folded in the same direction as the second stage arm llb, and the hydraulic cylinders 12c,
By contracting 12d, the angle α formed by the second stage arm 11b with respect to the second stage arm 11b becomes a dog (the angle β is small) according to the degree of contraction, and the third stage arm 11c
It is designed so that it can be projected forward.

The fresh concrete feed pipe line 13 is constructed as follows. A second pipe 13dl'i made of steel or the like is connected to the concrete outlet of the concrete pump (not shown).
As shown in the figure, the pipe 13dK is passed through the inside of the mast 6.
A plurality of connection lowers are provided at equal intervals. In addition, in order to allow vertical movement of the slide frame 7 within a certain range with respect to the mast 6, a pipe 13 connected to the connecting lower
The piping 13f fixed to the sliding frame 7 is arranged so that each connection port faces horizontally, and each piping 13e, 131 has a rotating joint 77.7 that is horizontally oriented in the same direction.
8 through the pipe 13f, horizontal part 13f' at one end of 13a
, 134', and the horizontal part 13 at the other end of these pipes.
horizontal rotation join between f'' and 13L'') 77.
The rotation joints 77 to 79 are connected to each other by a rotation joint 79 in the same direction as the rotation joint 78, and the rotation joints 77 to 79 are connected to each other so that as the slide frame 7 moves up and down, the opening angles of the piping 13y and 134 about the rotation joint 79 change. It is designed to perform rotational motion. In addition, in order to allow the rotating body 10 to rotate over a range of approximately ±180 degrees with respect to the slide frame 7, the upper connection port of the pipe 13f fixed to the slide frame 7 is configured to face the ground. , the connection port of the piping 13'b shown in FIG.
Vertical rotation join to f and l'3b) 80
．． Vertical section 1 of one end of pipe 137-513A through 81
3J' and 13H', and the vertical part 13 at the other end of these pipes.

, 13μ'' are connected by a vertical rotation joint 82. 13' is a hose connected to a pipe attached to the second stage arm 11b.

In this embodiment, electric motors are used as the motors that are power sources for the hydraulic pumps for the hydraulic cylinders 12a to 12d, the drive motors of the lifting winches 8, the drive motors, and the swing motors 24. Electrical connections to these motors are made as shown in FIG. In other words, a terminal box 103 and a cylindrical body 104 supporting the outer ring 9a are installed at the top of the slide frame 7, and the primary terminal of the terminal box 103 is connected to a cable 105 connected to a ground power source. The secondary terminal is connected to a conductive ring 106 provided on the inner circumference of the cylindrical body 104, and the conductive ring 10G is connected to the inner ring 9b.
The hydraulic pump contacts brushes 108 attached to the outer periphery of the cylindrical body 107 integrated with the hydraulic pump, and is connected to the brushes 108 through a cable 10'9 and a revolving body side control panel (not shown). Motor and swing motor 2
Power is now supplied to 4.

Further, the secondary side terminal of the terminal box 103 is connected to the control panel 11 installed on the slide frame 7 via the power line 109 and the operation line 110.
1, and the secondary side of the control panel 111 is connected to the motor of the lifting winch 8, the safety rope winding motor 112,
It is connected to the emergency brake operating device 11'3, and the output line of the tension detector 114 of the lifting rope 38, 39 is connected to the control panel 111. The details of the safety rope retraction motor 112 and the emergency brake operating device 113 are not shown in the figure, but to give an overview, the safety rope retraction motor 112 is installed on the slide frame 7, and is connected to the bracket by the pin 35, for example. A safety rope 117, which is hung on a sheave 116 suspended via a sheave 115 and tied at one end to the slide frame 7, is wound so that the tension of this safety rope is constant ((as the slide frame 7 moves up and down). On the other hand, when the tension detector 114 detects a decrease in tension due to rope cutting, etc., the emergency brake operation!fi 113 activates the brake of the safety rope winding motor to move the slide frame 7, revolving structure 10, and The boom 11 is supported by a safety rope 117.

When using this concrete destroyer to pour concrete for walls that separate rooms in a building,
The lifting winch 8 is driven to position the rotating body 10 at an appropriate height. As is clear from FIG. 6, the range of elevation of the revolving body 10 at this time is such that the piping 13.9 and system 13 form a straight line in FIG. Limited to a range. Next, by contracting the hydraulic cylinder 12b, the second stage arm 11b is made horizontal as shown in FIG. When the hose 13' is extended above the building a, the hydraulic cylinders 12c and 12d are contracted to bring the third stage arm 11c into a more horizontal position so that the hose 13' can reach the concrete pouring area at the back of the building. position, and if necessary, rotate the swing motor 24 to swing the swing body 10 relative to the slide frame 7 so that the tip of the third stage arm 11.c is as close as possible to the concrete pouring section.

During this turning, the pipes 13j, 13j-, i3A are rotated by the action of the rotational joins) 80, 81, and 82.

13b is prevented from relatively rotating and becoming a hindrance when the rotating body 10 turns. In addition, since the axis of the ready-mixed concrete feed piping coincides with the axis of each arm, the distance between each axis is constant regardless of arm rotation, and unreasonable force is caused by arm rotation. will not be added to the piping. In this concrete pouring work, as the concrete surface rises by supplying fresh concrete, the height of the rotating body 10 is raised, and then the hydraulic cylinder 12a is extended, and the hydraulic cylinders 12'c and 12d are extended to move toward the front side. Concrete will be placed in the area adjacent to the area. By repeating such operations, the first concrete and pouring of the wall can be performed.

When performing concrete pouring work on the outer wall 8o of the building shown in FIG.
By extending and contracting the arm 11, the tip of the third stage arm llc can be continuously moved along the outer wall portion 80, and work can be performed efficiently.

Note that the first stage arm l'lc is rotated in conjunction with the up-and-down movement of the first stage arm lla, and as shown in FIG. At some point, the third stage arm llc for the first stage arm llb
(By doing so, the height of the tip of the third stage arm llc can be made constant regardless of the inclination angle β of the first stage arm lla, and as shown in FIG. 6 or 8
It becomes possible to easily perform the work shown in the figure. That-
As the first stage, the command signal from the operating lever etc. is only for the ups and downs of the first stage arm 11a, that is, the command signal from the hydraulic cylinder 1
2a, and as shown in FIG. 9, the inclination angle β of the first stage arm 1.1a
The output signal of the potentiometer 83 that detects the second stage arm 11. of the third stage arm 11c. The difference between the output signal of the potentiometer 84 and the output signal of the potentiometer 84 that detects the angle β' with respect to
(or 12c) so that the angle of the third stage arm 11c with respect to the second stage arm 11bK becomes β. Here, one hydraulic cylinder 12c is connected to the second stage arm 1.
The angle β of the third stage arm 11c with respect to the third stage arm 1b is in the range of 90 degrees to 180 degrees, and the other hydraulic cylinder 12d is linked to the ups and downs of the first stage arm 11a, sharing the range of 0 degrees to 90 degrees. When the third stage arm llc is rotated, control can be easily performed by operating the hydraulic cylinder 12d.

10 to 13 show other embodiments of the present invention,
As a means to enable the slide frame 7 to move up and down with respect to the mast 6, a telescopic pipe 8 is installed in the piping that feeds the ready-mixed concrete.
7. This telescopic tube is attached to the slide frame 7 or the mast 6 (C support plates 88 and 89 as shown in the figure), and as shown in FIG. The oil outer cylinder 95 is integrated with the bracket 92 and the oil outer cylinder 95, and the outer cylinder 101 is provided between the inner cylinder 90 and the oil outer cylinder 95. is slidably fitted through inner and outer seal rings 96, 97 and a seal ring 100 on the inner periphery of an end bracket 99 attached to the oil outer cylinder 95 through a bolt 981f. , put a bracket 102 on the flange 95a at the lower end of the oil cylinder 95, put this bracket 102 on the one side open support plate 89 fixed to the mast 6, and tighten the bolt 1.
A flange 95 receives the load by being fixed at 23 and supports the oil hose 124 within the upper ring-shaped support plate 88.
1) is fitted to prevent movement in the horizontal direction.

The oil hose 124 supplies pressure oil between the oil outer cylinder 95 and the outer cylinder 101 to function as a hydraulic cylinder.
The oil outer cylinder 95 is provided with an air hole 125 to enable the outer cylinder 101 to move downward. The bracket 92 is connected to a pipe 131 that is connected to the lower connection via the rotation joint 126, and the outer cylinder 101 is connected to the rotation joint 1.
27 to the slide frame side pipe 13m, and the pipe 13m is connected to the pipe 13n via the rotation joint 128 on the slide frame 7, and the pipe 13'rL is connected to the rotation joint 129 that exists unrestricted in the air. Piping 1 through
3 pK is connected to the piping 13p (d connected to the piping 13c via the rotation joint 144 supported by the revolving body 10), and as the revolving body 10 rotates, the piping 13n is connected.
, 13p are expanded into a V-shape, and by appropriately determining the lengths of the pipes 13n and 13p, a rotation of approximately ±180 degrees can be obtained.

This telescopic pipe 87 has a limit switch 130 for detecting the shortest length of the telescopic pipe and a limit switch 131 for detecting the longest length of the telescopic pipe.
As shown in FIG. 12, the one for detecting the shortest distance is configured to be operated by a contact rod 132 passing through the bracket 92 in the axial direction and pressing a connecting roller 130a. , the contact rod 132 is always kept in an inoperative state by a pressing spring 134, and when the outer cylinder 101 is lowered to the shortest position, the contact rod 132 is used as a valve via the ring-shaped spacer 135 and the contact roller 130a Press limit switch 1
30 is activated. On the other hand, as shown in FIG. 13, what detects the longest length is a cam ring 137 that is slidable in the end bracket 99 and has a rigid surface a that is urged downward by a push spring 136, and an outer cylinder 1.
When '01 rises to the longest position, the flange at the lower end of the outer cylinder is pushed up and presses the cam ring] 37, the spacer 138, the body 139 fixed to the end bracket 99, and the a piston 140 that is mounted h and whose inner end contacts the inclined surface a; and a body 1.
A contact rod 143 is mounted in a holding cylinder 141 screwed into a holding tube 141 and pushed against a piston 140 by a push spring 142, and a pushing roller of a limit switch 131 that contacts the contact rod 143, 31 When the outer cylinder 95 rises to its longest position, the flange at its lower end connects to the cam ring 137 via the spacer 138.
As a result, the inclined surface a moves the piston 140 and the contact rod 143, so that the contact rod 143- is pressed against the contact roller 134a, and the limit switch 131 is activated. These glue minoto inchi 130
, 131 is used as a stop signal for the lifting winch 8 to lower or raise the revolving structure.

In this telescopic tube 87, pressure is applied between the outer cylinder 101 and the oil outer cylinder 95 from the ground by the oil hose 1'2.4.

The force F that tries to lower the outer cylinder 101 by supplying oil and its pressure is replaced by the force F' (this force (pulsates due to the nature of the pump) is set slightly larger than the maximum value F'mαχ of the pipe 131.
By generating tension in 13-a, smooth expansion and contraction becomes possible. In addition, it is reasonable that the length of the telescopic pipe 87 is about the height of one reinforcing bar assembly, and it is 3 to 4 m with a margin.
That's fine, but you can make it longer.

As described above, if the concrete destroyer of the present invention is used, when performing concrete pouring work,
The hose that serves as the outlet for fresh concrete can be placed at any location, which greatly reduces the need for disassembling and connecting pipes for feeding fresh concrete, allowing for more efficient concrete pouring. Can perform installation work.

The concrete destroyer of the present invention has a multi-joint arm installed on a revolving body that can move up and down along the mast, and a pipe for feeding fresh concrete is attached to the multi-joint arm, so it can be installed near buildings. When an obstacle exists, the multi-jointed arm can take a posture so as to cross the obstacle, and concrete pouring work when an obstacle is present is also facilitated.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the working situation of a conventional concrete root destroyer, and FIGS. 2 to 9 show an embodiment of the concrete destroyer according to the present invention.
Figure 2 is an overall perspective view, Figure 3 is a perspective view of the top of the mast, Figure 4 is a vertical sectional view showing the combined structure of the mast, revolving body, and slide frame, and Figure 5 is the base of the first stage arm. 6 is a side view showing the working situation, Fig. 7 is an explanatory diagram of the arm angle, Fig. 8 is a plan view showing another working situation, and Fig. 9 is a side view showing the working situation. Block diagrams of the interlocking device, FIGS. 1.0 to 13 are other embodiments of the present invention, and FIG. 10 is a perspective view showing parts other than the ready-mixed concrete feed pipe line using imaginary lines. , FIG. 11 is a longitudinal cross-sectional view showing a telescopic tube, and FIGS. 12 and 13 are cross-sectional views showing a device for detecting the shortest and longest length of the telescopic tube, respectively. 6... Mast, 10... Swivel body, 11... Multi-joint arm, 12a-12''... Hydraulic cylinder for arm rotation, 13... Ready-mixed concrete feeding pipe. Patent applicant: Hitachi Kenki Co., Ltd. Agent Patent Attorney Masami Akimoto Agent Patent Attorney Masaru Wakata - Figure 5

Claims (1)

[Claims] 1. A slide frame is attached to the mast so that it can be raised and lowered freely by a lifting device r, and a revolving body is installed on the slide frame so as to be able to freely rotate around the mast via a swivel ring, and on the revolving body. A multi-joint arm is attached, which is a combination of three or more arms that can be rotated by a rotary drive device provided correspondingly to each arm. A concrete destroyer characterized by being attached and supported by an articulated arm. 2. If the multi-joint arm has three arms, a mechanism is provided between the second stage arm and the rotating body to horizontalize the second stage arm during work regardless of the inclination angle of the first stage arm; 2. The concrete destroyer according to claim 1, further comprising a mechanism for making the rotation angle of the three-stage arm with respect to the second-stage arm coincide with the inclination angle of the first-stage arm.