JPH04125339U - concrete vibrator - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a concrete vibrating device that can accurately grasp the insertion status of a vibrator into poured concrete and can reliably and uniformly compact it regardless of the vertical depth of the formwork. [Configuration] Cable 8 connected to vibrator 1,
A lower sensor 2 and an upper sensor 3 are provided at intervals in the vertical direction. The lower sensor 2 and the upper sensor 3 each detect concrete 10. When both detect concrete, the controller 5 starts the drive motor 7 to wind up the hanging cable 4, but when the winding progresses and the upper sensor 3 no longer detects concrete, the winding is stopped. Therefore, when filling the concrete 10, the vibrator 1 is pulled up as the concrete 10 is filled,
A predetermined insertion depth is automatically maintained.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention uses a vibrator to compact the poured concrete. Concerning a concrete vibrator that is inserted from above into a concrete vibrator to vibrate it, In particular, it is possible to maintain a constant insertion depth of the vibrator into poured concrete. This invention relates to a concrete vibration device.

0002

[Conventional technology]

When constructing concrete structures, vibration is applied to concrete poured into formwork. Compaction is performed by applying vibrations using a roller. This compaction is shown in Figure 4. The vibrator 100 is attached to the outer surface of the formwork 9 so that the poured concrete 1 This can be done by indirectly exciting 0, but there are problems such as poor efficiency. For example, JP-A-1-244074 (E04G 21/02) or JP-A No. 1-244074 (E04G 21/02) As proposed in Publication No. 2-20766 (E04G 21/06), A rod-shaped vibrator 1 is inserted into the poured concrete 10, and the placed concrete 1 0 is directly vibrated.

0003

[Problem that the idea aims to solve]

However, in the above proposal, the rod-shaped vibrator 1 is molded from above the slab. Since it is suspended within the frame 9 and becomes invisible, how much of it is inside the poured concrete 10? It is difficult to judge whether the concrete has been inserted or not, so Insertion may be too shallow, resulting in insufficient compaction, or conversely, insertion may be too deep, resulting in excessive compaction. There is a large variation in concrete quality, such as separation of poured concrete. The problem is that it tends to happen. In addition, the pouring of concrete 10 was temporarily suspended. When restarting after disconnecting, the insertion depth of vibrator 1 cannot be determined, so Insert vibrator 1 deep into the pre-placed concrete that has already begun to harden. This may result in undesirable effects on concrete quality. There was also a problem.

0004 This invention was devised in view of the above problems, and its purpose is to improve pouring control. You can accurately check the insertion status of the vibrator into the cleat, and check the vertical depth of the formwork. A concrete vibration system that can reliably and uniformly compact poured concrete. The aim is to provide a

[0005]

[Means to solve the problem]

In order to achieve the above purpose, this invention is inserted into poured concrete for compaction. A concrete vibration device equipped with a vibrator that vibrates the poured concrete. , a cable extending from the upper end of the vibrator is attached to the top of the cable. The first sensors are spaced apart from each other in the downward direction and detect concrete. and a second sensor, and a driving means for imparting vertical movement of the vibrator. , when both the first sensor and the second sensor detect concrete, the upper The drive means is configured to lift the vibrator from the concrete. The invention is characterized by comprising a control means for activating the means.

[0006]

[Effect]

To describe the function of this invention, the cable extending from the upper end of the vibrator Two sensors placed vertically apart from each other detect concrete. Therefore, by monitoring the concrete detection signals from both of these sensors, concrete It is possible to accurately grasp the insertion status of the vibrator into the concrete being constructed. and, When both of the above sensors detect concrete, the control means turns on the vibrator. The concrete is filled by starting the driving means that provides vertical movement. The vibrator is pulled up as the insertion depth increases, ensuring that the specified insertion depth is always maintained. Therefore, the vibrator may not be inserted deeper than specified into the poured concrete. There is no fault.

[0007]

【Example】

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Figure 1 shows the present invention 1 is a configuration diagram showing a preferred embodiment of a concrete vibrating device according to 9 shows the situation in which concrete is being filled.

[0008] This concrete vibration device is basically used for compacting poured concrete 10. , a rod-shaped vibrator 1 is inserted into the poured concrete 10 from above and vibrated. The lower sensor serves as the first sensor for detecting the concrete 10. sensor 2 and upper sensor 3 as the second sensor, and both sensors 2 and 3 are As a control means to start hoisting the hanging cable 4 when concrete is detected in the The controller 5 is configured to include a controller 5.

[0009] The other end of the hanging cable 4 connected to the vibrator 1 is connected to the winding drum 6. There is. This winding drum 6 is driven by a drive motor 7 as a driving means coupled thereto. It is designed to be rotated. That is, as the winding drum 6 rotates, the hanging It is configured so that the rope 4 can be hoisted up and lowered. And this hanging A cable 8 for accommodating the power supply system and control system wiring for the vibrator 1 and the like runs along the cable 4. It is stretched. For cable 8, use a highly durable cabtire cable, etc. It is common to use In addition, to move the vibrator 1 up and down, please use the above-mentioned method. In addition to the structure consisting of the winding drum 6 and the hanging cable 4, the vibrator 1 is bent from the upper end. A highly rigid rod-shaped member is provided as an extension, and this rod-shaped member is connected to the drive motor. By sandwiching the rollers connected to the rollers, the rotational movement of the rollers can be controlled by the rollers connected to the rollers. It may also be configured to convert into vertical movement of the do-shaped member.

0010 A lower sensor 2 is arranged on the cable 8 near the connection part with the vibrator 1. , an upper sensor 3 is disposed above the lower sensor 2 at an interval. these The lower sensor 2 and upper sensor 3 are so-called concrete sensors, A detection signal is sent out when it comes into contact with concrete 10.

[0011] Figure 2 is a block diagram schematically showing the configuration of the controller, and Figure 3 is a block diagram schematically showing the configuration of the controller. FIG.

0012 Controller 5 monitors detection signals from lower sensor 2 and upper sensor 3 Operation of the detection monitor section 50, the drive motor 7 of the winding drum 6, and the vibrator 1 It is configured to include a control section 51 that controls the. In other words, with controller 5 receives the detection signals of the lower sensor 2 and the upper sensor 3 at the detection monitor section 50, The control unit 51 controls the vibrator 1 and the drive according to the monitoring status of these detection signals. Starting or stopping of the motor 7 is controlled as appropriate.

[0013] In the control unit 51, when the lower sensor 2 detects the concrete 10 (S1, Y ES), and activates vibrator 1 (S2). And also the upper sensor 3 When concrete 10 is detected (S3, YES), the drive motor 7 is started. The hanging cable 4 is hoisted (S4). On the other hand, the winding of the hanging cable 4 progresses and the upper When the sensor 3 no longer detects the concrete 10 (S3, NO), the drive motor 7 to stop the hoisting of the hanging cable 4 (S5).

[0014] When filling (placing) concrete 10, first place vibrator 1 at the highest point in formwork 9. It is suspended to the lower part, and then concrete 10 is filled into the formwork 9. concrete 10 progresses and the vibrator 1 is placed in the concrete 10 at its upper end. When the concrete is inserted, the lower sensor 2 detects the concrete 10. Therefore, due to this detection, vibrator 1 is activated and the concrete 1 is An excitation of 0 is performed. That is, the vibrator 1 is connected to the concrete of the lower sensor 2. When detected, the excitation operation automatically starts. In this case, the activation of vibrator 1 Of course, it is also possible to start the process manually by the operator. and, As the filling of the concrete 10 progresses further, the concrete 10 reaches the upper sensor above. 3, the upper sensor 3 will also detect the concrete 10. As a result, the drive motor 7 is started and the hanging cable 4 is hoisted up, and the bi-directional The blator 1 is pulled up. At this time, the upper sensor 3 is responsible for hoisting the hanging rope 4. It is stopped when it is pulled up from the top surface of the concrete 10. However, concrete While the filling of the port 10 is in progress, the lifted upper sensor 3 is immediately reactivated. Since it comes into contact with concrete 10, winding is started again. i.e. , the start and stop of winding will be repeated.

[0015] In addition, a timer is built into the controller 5, and the concrete of the lower sensor 2 is to capture the alert detection signal or the worker's vibrator 1 start control signal. If configured, the excitation operation of vibrator 1 will automatically stop after the set time has elapsed. It is also possible.

[0016] In this way, at the part of the cable 8 extending upward from the upper end of the vibrator 1, , a lower sensor 2 and an upper sensor 3 are arranged at intervals in the vertical direction. Since the concrete 10 will be detected, the detection signals of both sensors 2 and 3 will be monitored. By checking the insertion status of the vibrator 1 into the poured concrete 10, can be grasped. Both sensors 2 and 3 detect concrete 10. When this happens, the controller 5 (control unit 51) starts hoisting the hanging rope 4. As the concrete 10 is being filled, the vibrator 1 is also pulled up and inserted into the specified position. The penetration depth is always maintained, and the vibrator 1 is inserted into the poured concrete 10. is not inserted deeper than specified. Therefore, for poured concrete 10 On the other hand, the vibration by the vibrator 1 is always performed reliably and stably.

[0017] That is, according to such a configuration, the vibration against the poured concrete 10 is It is assumed that the insertion status of the printer 1 can be accurately grasped by the lower sensor 2 and the upper sensor 3. In addition, since the predetermined insertion depth is always maintained under the control of the controller 5, the formwork 9 The compaction of poured concrete 10 can be performed reliably and uniformly regardless of the vertical depth of the concrete. , it is possible to simplify construction and improve concrete quality.

[0018] Note that hanging the vibrator 1 does not necessarily require a dedicated hanging like the one in this example. It is not necessary to use cable 4, for example, as cable 8 connected to vibrator 1. By using a member with sufficiently high tensile strength, the hanging cable 4 may be omitted. stomach.

[0019] In addition, the lower sensor 2 and the upper sensor 3 act as mere electrodes and apply voltage between them. such as applying voltage and monitoring the presence or absence of continuity due to the conductivity of the concrete 10. It may also be a configuration.

[0020]

[Effect of the idea]

As explained in detail in the examples above, the concrete vibration device according to the present invention If so, install cables connected to the vibrator that are vertically spaced apart from each other. This is because the lower and upper sensors that are attached detect concrete. By monitoring the detection signals of both sensors, the vibration of the poured concrete can be detected. The insertion status of the controller can be accurately grasped. Both of the above sensors are connected to the concrete. When a break is detected, the control means activates the hoisting of the suspension line, so that the concrete As the leat is filled, the vibrator is also pulled up to maintain the specified insertion depth. , the vibrator should not be inserted deeper into the poured concrete than specified. stomach. Therefore, the vibrator can reliably excite the poured concrete. This means that concrete can be poured stably regardless of the vertical depth of the formwork. Compaction can be performed reliably and uniformly, simplifying construction and improving concrete quality. can be achieved.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing a main part of an embodiment of the present invention.

FIG. 2 is a block diagram schematically showing the configuration of a controller.

FIG. 3 is a flowchart illustrating the control operation of the controller.

FIG. 4 is a sectional view of a formwork portion showing a conventional example of compaction of poured concrete.

[Explanation of symbols]

1 vibrator 2 Lower sensor 3 Upper sensor 4 Hanging rope 5 Controller 8 Cable 10 Concrete

Claims (1)

[Scope of utility model registration request] Claim 1. A concrete vibrator equipped with a vibrator inserted into poured concrete to vibrate the poured concrete for compaction, wherein a cable extending from the upper end of the vibrator is provided with a vibrator installed in the vertical direction of the cable. a first sensor and a second sensor that are spaced apart from each other and detect concrete; a driving means that imparts a vertical movement motion to the vibrator; A concrete vibrating device comprising: control means for activating the drive means to lift the vibrator from the concrete when both detect concrete.