JPH04286516A - Conveyor device - Google Patents

Abstract

PURPOSE:To obtain a conveyor device for placing ready-mixed concrete, of which structure is simple and of which dimension and weight is small and which is transferred easily, by dividing a conveyor device into a first and a second conveyors, and inclining both the conveyors at a predetermined angle respectively. CONSTITUTION:A second conveyor A is hoisted by a crane, and is located so that a downstream side end 1b of a first conveyor frame 1 is positioned upper of an upstream side end 2a of a second conveyor frame 2. A first inclination cylinder 3 is driven to incline the conveyor frame 1 at a predetermined angle. Thereafter, adjustment of position against a conveyor B is performed to complete the location of a conveyor device. Next, a concrete mixer truck is parked near a hopper 6 provided in the conveyor frame 1, and when belts 11, 22 are driven and the ready-mixed concrete is thrown into the hopper 6, the ready-mixed concrete is carried to the arrow (a) direction to be thrown from a chute 21 provided in a downstream side end 2b of the conveyor frame 2 into a boring hole.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable conveyor system, and more particularly to a conveyor system that can be used for concrete placement at pile driving sites.

0002

2. Description of the Related Art At bridge construction sites and the like, concrete foundation piles are constructed by boring the ground, burying reinforcing bars in the holes, and at the same time pouring ready-mixed concrete. The construction of this pile involves boring the ground by rotating a steel pipe with a bit attached to the tip and propelling it with its own weight to remove earth and sand from inside the pipe. When the steel pipe reaches a preset depth, A cage-like combination of reinforcing bars is inserted inside the steel pipe, and then concrete is poured while the steel pipe is pulled out. The ground surface at the above-mentioned construction sites is not necessarily flat, and the diameters of the piles to be constructed are often large. Furthermore, the piles to be constructed are often independent, and therefore, it is common to construct the piles by pouring ready-mixed concrete into separate boreholes. The work of placing fresh concrete as described above is shown in Figure 3.
This is done as shown in . That is, a lifting platform 52 is installed near the boring hole 51, a mixer truck 53 is placed on this platform 52 and raised to the upper end of the boring device 54, and fresh concrete is poured into the boring hole 51 at this raised position. I'm trying to invest in it.

0003

[Problem to be Solved by the Invention] Platforms for raising and lowering mixer trucks are installed corresponding to individual boreholes, so after pouring fresh concrete into one borehole, the platform for raising and lowering the mixer truck is placed in the vicinity of other adjacent boreholes. will be relocated to. Stability and safety are required on this platform because it lifts and lowers a heavy mixer truck. For this reason, there is a problem in that the platform itself is large in size and heavy, and is difficult to relocate. In order to solve the above problems, there is a need to develop a pouring device that can pour concrete while the mixer truck is parked on the ground and that can be easily relocated.

An object of the present invention is to provide a conveyor device for pouring fresh concrete that is simple in structure, small in size and weight, and easy to relocate.

[0005]

Means for Solving the Problems In order to solve the above problems, a conveyor device according to the present invention has one end of a first conveyor frame grounded, and a first tilting drive member located at a predetermined distance from the grounded end. and a first conveyor configured by winding an endless belt around rollers disposed at both ends, and a second conveyor frame are attached to a swing stand via a lifting drive member and a second tilting drive member provided at predetermined positions. and a second conveyor configured by attaching the swing stand to the frame via a horizontal drive member and winding an endless belt around rollers disposed at both ends of the second conveyor frame, The downstream end in the conveying direction is arranged above the upstream end in the conveying direction of the second conveyor.

[0006]

[Operation] According to the above means, the first conveyor and the second conveyor constituting the conveyor device can each be inclined at a predetermined angle. Therefore, fresh concrete can be poured into the borehole from the mixer truck while the mixer truck is parked on the ground, and therefore, the pouring work can be carried out in a stable and safe manner. Furthermore, since the conveyor device is configured to be divided into the first conveyor and the second conveyor, when the conveyor device is relocated, the first conveyor and the second conveyor can be moved separately. Therefore, when concrete placement in one borehole is completed, it is possible to easily move the conveyor device to the vicinity of another borehole.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a conveyor apparatus to which the above means is applied will be described below with reference to the drawings. FIG. 1 is a side view of the conveyor device, and FIG. 2 is a plan view of the conveyor device. As shown in the figure, the conveyor device according to the present invention has a first conveyor A.
and a second conveyor B, which are divided into two conveyors. The first conveyor A is configured such that one end of the first conveyor frame 1 contacts the ground surface and can be tilted at a predetermined angle. Then, at the end on the ground side, the fresh concrete poured from the mixer truck is transported in the direction of arrow a, and the second
This is to be fed onto conveyor B. The second conveyor B is configured to be able to adjust its position with respect to a bore hole (not shown) by tilting the second conveyor frame 2 at a predetermined angle, moving the frame 2 vertically and horizontally, and rotating it. has been done. Then, the ready-mixed concrete introduced from the first conveyor A is conveyed in the direction of arrow a and is introduced into the boring hole.

The first conveyor A includes a first conveyor frame 1, a first tilting cylinder 3 serving as a first tilting drive member for tilting the first conveyor frame 1, and a stand 4 to which the first tilting cylinder 3 is attached. It is made up of.

One end 1a of the first conveyor frame 1
A wheel 5 is attached to the lower part of the wheel 5, and this end 1a
A hopper 6 is provided above. The wheels 5 are used to smoothly move the end portion 1a when the first conveyor frame 1 is tilted at a predetermined angle by driving the first tilting cylinder 3. In addition, hopper 6 smoothly transfers fresh concrete from the mixer truck to the first
This is to be introduced into conveyor A. A driving roller 8 directly connected to a hydraulic motor 7 is disposed at one end 1a of the first conveyor frame 1, and a driven roller 10 attached to a take-up unit 9 is disposed at the other end 1b. There is. A belt 1 is attached to each of the rollers 8 and 10.
1 is wound and transported in the direction of arrow a. Further, a chute 12 is provided at the end portion 1b of the first conveyor frame 1 for charging the ready-mixed concrete conveyed by the belt 11 into the second conveyor B.

[0010] The first tilting cylinder 3 is constituted by a hydraulic cylinder, and is mounted at a position farther from the end 1a of the first conveyor frame 1 than the center of gravity of the frame 1. That is, a bracket 1c is fixed at a position spaced apart from the end 1a of the first conveyor frame 1 by about 2/3 of the total length of the frame 1.
The first tilting cylinder 3 is attached via a pin 13, which serves as a rotational fulcrum, and is fitted into the first tilting cylinder 3. Therefore, the first conveyor frame 1 is supported at two points: the end 1a and a position approximately 2/3 of the total length, which is the mounting position of the first tilting cylinder 3, and the first tilting cylinder 3 is driven. By moving the mounting position up or down, the first conveyor frame 1 can be tilted to a desired angle. In this embodiment, the maximum inclination angle of the first conveyor frame 1 can be set to 22.5 degrees by advancing the rod of the first tilting cylinder 3 to its stroke limit.

The second conveyor B includes a second conveyor frame 2 and a second tilting cylinder 1 which is a second tilting drive member attached to a predetermined position of the second conveyor frame 2.
4 and a lifting cylinder 15 serving as a lifting drive member, and a second
a turning stand 16 for turning the conveyor frame 2;
It is composed of a horizontal cylinder 17 serving as a horizontal drive member for horizontally moving the swing stand 16, a frame 18 for attaching each of the above-mentioned members, and legs 19 for adjusting the height of the frame 18.

[0012] The second conveyor B is disposed downstream of the first conveyor A in the conveyance direction. For this reason, the upstream end 2a of the second conveyor frame 2 is provided with a hopper 20 for receiving the ready-mixed concrete conveyed from the first conveyor A, and the downstream end 2b is provided with a hopper 20 for receiving the ready-mixed concrete conveyed from the first conveyor A. A chute 21 for throwing the material into a boring hole (not shown)
is provided. Both ends 2 of the second conveyor frame 2
Similar to the first conveyor A, a drive roller 8 directly connected to a hydraulic motor 7 and a driven roller 10 attached to a take-up unit 9 are provided on the conveyors a and 2b, respectively. A belt 22 is then wound around each of the rollers 8 and 10 and transported in the direction of arrow a. Two brackets 2c and 2d are installed approximately at the center of the second conveyor frame 2 at a predetermined distance apart.
are fixed to each other, and a pin 23 serving as a pivot point is fitted into each of the brackets 2c and 2d. Bracket 2c
A lift cylinder 15 consisting of a hydraulic cylinder is attached to the pin 23 attached to the bracket 2.
The pin 23 fitted in d has a second cylinder made of a hydraulic cylinder.
A tilting cylinder 14 is attached. Therefore, by driving the lifting cylinder 15 and the second tilting cylinder 14, it is possible to tilt the second conveyor frame 2 to a desired angle and set it to a desired height. In this embodiment, when the lifting cylinder 15 and the second tilting cylinder 14 are advanced to the stroke limit, the second
It is possible to tilt the conveyor frame 2 to an angle of 22.5 degrees.

The swing stand 16 is configured to be movable on a frame 18, a stand base 16a, a lower stand 16b fixed to the stand base 16a, and a lower stand 16b attached to the tip of a rod of an elevating cylinder 15 so as to be movable up and down. and an upper stand 16c. A bracket 16d is fixed to the upper end of the upper stand 16c, and a pin 23 is fitted to the bracket 16d to connect the second conveyor frame 2 and the lifting cylinder 15 via the upper stand 16c. Note that one end of the lifting cylinder 15 is connected to a stand base 16a.
is attached to. Further, a bracket 16e is fixed to the side surface of the upper stand 16c, and the second tilting cylinder 14 is attached to this bracket 16e. The upper stand 16c is 0 with respect to the lower stand 16b.
It is configured to be able to turn in the range of 90 degrees to 90 degrees. Therefore, it is possible to rotate the second conveyor frame 2 by rotating the upper stand 16c at a desired angle within the above range. Further, in order to rotate the upper stand 16c and fix it at a predetermined rotational position, fixing members 16f are provided on the outer periphery of the upper stand 16c and on the stand base 16a, respectively.

The frame 18 is for mounting the swing stand 16, and is constructed by combining section steel. A horizontal cylinder 17 for horizontally moving the swing stand 16 is provided on the upper surface of the frame 18. A hydraulic cylinder is used as this horizontal cylinder 17. Therefore, by driving the horizontal cylinder 16 and moving the swing stand 16, it is possible to move the second conveyor frame 2 to a desired position within the stroke range of the horizontal cylinder 17. frame 1
Two legs 19 are provided at each end of the front-rear direction (left-right direction in FIG. 1) of 8. Legs 19 are frame 18
It is configured to be able to move in and out horizontally and vertically. In addition, in FIG. 1, 24 is an operation stand for operating each cylinder and a hydraulic motor.

Next, the operation of the conveyor device constructed as described above will be explained. The first conveyor A and the second conveyor B are separated and moved by a truck or the like to the vicinity of a boring hole where fresh concrete is to be poured. First, the second conveyor B is installed at a predetermined position by a crane. At this time, while the frame 18 is being lifted by a crane, the legs 19 are made to protrude from the frame 18 in the horizontal direction and also in the height direction. Further, when installing the second conveyor B, leveling is performed so that the frame 18 is approximately horizontal. Next, operate the operation stand 24 to rotate the second tilting cylinder 1.
4 and the lifting cylinder 15 to tilt the second conveyor frame 2 at a predetermined angle. Next, the swing stand 16 is operated and the horizontal cylinder 17 is driven to position the downstream end 2b of the second conveyor frame 2 above the borehole. By the above procedure, the second conveyor B
installation is completed.

Next, the first conveyor A is lifted up by a crane and installed so that the downstream end 1b of the first conveyor frame 1 is located above the upstream end 2a of the second conveyor frame 2. Then, the first tilting cylinder 3 is driven to tilt the first conveyor frame 1 at a predetermined angle. Thereafter, by adjusting the position with respect to the second conveyor B, etc., the installation of the conveyor device is completed.

With the conveyor device configured as described above, the mixer truck is parked near the hopper 6 provided on the first conveyor frame 1, and when the belts 11 and 22 are driven to charge fresh concrete into the hopper 6, this raw concrete is poured into the hopper 6. Concrete is conveyed in the direction of arrow a and thrown into the borehole through a chute 21 provided at the downstream end 2b of the second conveyor frame 2.

[0018]

As described above in detail, according to the conveyor device according to the present invention, since the conveyor device is divided into two conveyors, it can be easily relocated by transportation means such as a truck. In addition, since the two conveyors are configured to be inclined at a predetermined angle, it is possible to feed the fresh concrete from the mixer truck to the conveyor device while the mixer truck is parked on the ground. Ready-mixed concrete can be transported to the borehole. Therefore, the operation of pouring fresh concrete into the borehole can be carried out in a stable and safe manner. Furthermore, since the conveyor device is composed of two conveyors, the first conveyor and the second conveyor, the first conveyor can be installed at an angle to the second conveyor. Therefore, it has features such as being able to carry out concrete pouring work even in narrow spaces.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conveyor device.

FIG. 2 is a plan view of the conveyor device.

FIG. 3 is an explanatory diagram of the prior art.

[Explanation of symbols]

A is the first conveyor, B is the second conveyor, 1 is the first conveyor frame, 2 is the second conveyor frame, 3 is the first tilting cylinder, 4 is the stand, 5 is the wheel, 6, 20 is the hopper, 7 is the hydraulic pressure Motor, 8 is a driving roller, 10 is a driven roller, 11, 22 is a belt, 12, 21 is a chute,
14 is a second tilting cylinder, 15 is a lifting cylinder, 1
6 is a rotating stand, 17 is a horizontal cylinder, 18 is a frame, 19 is a leg, and 24 is an operating stand.

Claims (1)

[Claims] Claim 1: One end of the first conveyor frame is grounded, a first tilting drive member is attached at a predetermined distance from the grounded end, and an endless belt is wound around rollers disposed at both ends. A first conveyor and a second conveyor frame are attached to a swing stand via a lifting drive member and a second tilting drive member provided at predetermined positions, and the swing stand is attached to the frame via a horizontal drive member, and a second a second conveyor configured by winding an endless belt around rollers disposed at both ends of a conveyor frame, the downstream end of the first conveyor in the conveying direction being disposed above the upstream end of the second conveyor in the conveying direction. A conveyor device characterized by: