Concrete vibrator compaction height control device

Abstract

This invention provides a concrete vibrator compaction height control device that allows for precise control of the height position of a concrete vibrator with a simple configuration. [Solution] The concrete vibrator compaction height management device 1 manages the height position of the concrete vibrator CV that compacts concrete C by vibration. The concrete vibrator compaction height management device 1 includes a sensor unit 10 that detects the surface position C1 of the concrete C, and a notification unit 20 that notifies that the sensor unit 10 has detected the surface position C1 of the concrete C. The sensor unit 10 has a base unit 11 attached to a hose unit H, and a pair of electrodes that conduct electricity through the concrete C. The base unit 11 has a mounting portion that is attached to the hose unit H. The pair of electrodes are provided at a position away from the mounting portion of the base unit 11 when viewed from above. The notification unit 20 emits light when the pair of electrodes conduct electricity through the concrete C.

Description

Technical Field

[0001] The present invention relates to a device for managing the compacting height of a concrete vibrator, and more particularly to a device for managing the height position of a concrete vibrator that compacts concrete by vibration.

Background Art

[0002] When placing concrete, a concrete vibrator that compacts the concrete by the vibration of a vibrating part is generally used. The concrete vibrator includes a rod-shaped vibrating part that applies vibration to the concrete, and a hose part that extends upward from the vibrating part. An operator can hold the hose part and insert the vibrating part to a predetermined height position in the concrete, and compact the concrete by vibrating the vibrating part.

[0003] Conventionally, in order to manage the height position of a concrete vibrator, a mark such as a vinyl tape is provided on the hose part. Specifically, a mark is provided at the target height position of the hose part corresponding to the surface position of the concrete, and the concrete is placed until the surface position of the concrete reaches the mark, thereby grasping the height position of the concrete vibrator. However, there are cases where the mark peels off from the hose part, or it becomes difficult to visually recognize the mark when the vibrating part is inserted into a deep position. Therefore, there is a risk that the operator cannot grasp the height position of the concrete vibrator.

[0004] Here, in order to grasp the height position of the concrete vibrator, for example, Patent Document 1 discloses that a 3D AR marker is attached to the hose part, and the height position of the concrete vibrator is accurately recognized by measuring the position of the 3D AR marker. Further, Patent Document 2 discloses that a distance sensor provided above the vibrating part measures the distance to the concrete surface, and generates sound and light according to the measurement result.

Prior Art Documents

[0005] [Patent Document 1] Japanese Patent Publication No. 2023-163927 [Patent Document 2] Japanese Patent Publication No. 2001-140256 [Overview of the project] [Problems that the invention aims to solve]

[0006] However, as described in Patent Documents 1 and 2, measuring the distance to the concrete surface using equipment such as 3DAR markers and distance sensors to accurately recognize the height position of the concrete vibrator could increase equipment costs.

[0007] This invention has been made in view of the above problems, and the object of this invention is to provide a concrete vibrator compaction height control device that can accurately control the height position of a concrete vibrator with a simple configuration. [Means for solving the problem]

[0008] The aforementioned problem is addressed by the concrete vibrator compaction height management device according to the present invention, which manages the height position of a concrete vibrator that compacts concrete by vibration, comprising: a sensor unit for detecting the surface position of the concrete; and a notification unit for notifying that the sensor unit has detected the surface position of the concrete, wherein the sensor unit has a base unit attached to the hose unit of the concrete vibrator, and a pair of electrodes provided on the base unit that conduct electricity through the concrete, wherein the base unit has a mounting portion attached to the hose unit, and the pair of electrodes are provided at a position away from the mounting portion of the base unit in a top view, Each of the pair of electrodes is positioned on opposite sides of the mounting portion. The notification function is solved by the pair of electrodes emitting light or sounding when current is passed through the concrete.

[0009] In this manner, the notification unit emits light or sound when current is passed through the pair of electrodes via the concrete. Therefore, the height position of the concrete vibrator relative to the concrete can be determined without the need for measurement by other instruments. Furthermore, by positioning the pair of electrodes away from the hose, the concrete surface position can be accurately detected while avoiding concrete slurry adhering to the hose. Therefore, the height position of the concrete vibrator can be precisely controlled with a simple configuration.

[0010] Furthermore, the device may include a relay circuit for electrically connecting the sensor unit and the notification unit, and a housing unit for housing the notification unit and the relay circuit, wherein the housing unit may be detachably attached to the hose unit. In this way, since the storage unit that houses the notification unit is detachably attached to the hose unit, the notification unit can be positioned in a location that is easily recognizable by the operator.

[0011] Furthermore, the notification unit is a flexible, elongated light-emitting unit provided along the inner surface of the storage unit, and the light-emitting unit emits light when the pair of electrodes are energized through the concrete. Thus, because the notification unit is a long, luminescent unit positioned along the inner surface of the storage unit, it becomes easier for the worker to visually confirm when the concrete surface reaches the sensor unit.

[0012] Furthermore, the mounting portion may extend vertically along the hose portion and be detachably attached to the hose portion. In this way, since the mounting portion extends in the vertical direction, the mounting strength of the base portion to the hose portion can be improved. Furthermore, since the mounting portion can be detachably attached to the hose portion, the target height position corresponding to the concrete surface position can be varied according to the concrete pouring conditions.

[0013] Further, the base portion has an extending portion that extends away from the mounting portion in a top view, and a fixing portion that extends downward from the tip of the extending portion and to which the pair of electrodes are fixed. The lower end portion of the fixing portion is disposed below the lower end of the mounting portion, and the pair of electrodes may be fixed to the lower end portion of the fixing portion. In this way, when the surface position of the concrete reaches the pair of electrodes, it is possible to suppress the mounting portion from being inserted into the concrete and getting dirty.

Advantages of the Invention

[0014] According to the concrete vibrator tightening height management device of the present invention, the height position of the concrete vibrator can be accurately managed with a simple configuration.

Brief Description of the Drawings

[0015] [Figure 1] It is a diagram showing a state in which the concrete vibrator tightening height management device of the present embodiment is attached to a concrete vibrator. [Figure 2] It is a front view of the concrete vibrator tightening height management device. [Figure 3] [[ID=二十三]]It is a perspective view of the sensor unit. [Figure 4] It is a front view of the notification unit, relay circuit, and storage unit. [Figure 5] It is a side view of the notification unit, relay circuit, and storage unit. [Figure 6] It is an electrical circuit diagram of the sensor unit, notification unit, and relay circuit. [Figure 7] It is a diagram showing a state before the vibrating portion is inserted into the concrete. [Figure 8] It is a diagram showing a state after the vibrating portion is inserted into the concrete.

Embodiments for Carrying Out the Invention

[0016] Hereinafter, based on FIGS. 1 to 8, a concrete vibrator tightening height management device 1 according to an embodiment of the present invention (hereinafter, this embodiment) will be described. In the following description, as shown by the arrow shown in FIG. 1, the "vertical direction" is the direction in which the vibrating portion V of the concrete vibrator CV is inserted. Further, the "top view" and the "top view of the base portion" are the states seen from above when the concrete vibrator tightening height management device 1 is attached to the concrete vibrator CV and installed in the direction of insertion into the concrete C.

[0017] <Concrete vibrator tightening height management device> As shown in FIGS. 1 to 8, the concrete vibrator tightening height management device 1 is used to manage the height position of a concrete vibrator CV that compacts the concrete C by vibration. As shown in FIG. 1, the concrete vibrator tightening height management device 1 is attached to the concrete vibrator CV and detects the surface position C1 of the concrete C. By detecting the surface position C1 of the concrete C, the concrete vibrator tightening height management device 1 notifies the operator that the concrete vibrator CV is arranged at the height position where the compaction is performed. Specifically, the operator places the concrete C until the surface position C1 of the concrete C is detected by the concrete vibrator tightening height management device 1.

[0018] First, the concrete vibrator CV will be described.As shown in FIG. 1, the concrete vibrator CV includes a rod-shaped vibrating portion V that applies vibration to the placed concrete C, a hose portion H that extends upward from the vibrating portion V, and an inverter I that is connected to the hose portion H. The operator holds the hose portion H and inserts the vibrating portion V into the concrete C, and vibrates the vibrating portion V to perform the compaction work of the concrete C. By the vibration of the vibrating portion V, the air bubbles inside the placed concrete C are removed, and the cement and aggregate are evenly distributed, so that the strength, density and durability of the concrete C can be improved.

[0019] The vibrating section V is a rod-shaped vibrating body that contains a motor (not shown) that rotates an eccentric pendulum inside. The vibrating section V is inserted into the concrete C to a predetermined height. The hose section H is a long cable connecting the base end of the vibrating section V to the inverter I, with an electric wire inserted inside. The concrete vibrator compaction height control device 1 is detachably attached to the hose section H. Inverter I is the power source for the vibrating unit V, and converts general commercial power into high-frequency power to supply power to the motor of the vibrating unit V.

[0020] As shown in Figure 1, the concrete vibrator compaction height management device 1 includes a sensor unit 10 for detecting the surface position C1 of concrete C, a notification unit 20 for notifying that the sensor unit 10 has detected the surface position C1 of concrete C, a relay circuit 30 for electrically connecting the sensor unit 10 and the notification unit 20, and a housing unit 40 for housing the notification unit 20 and the relay circuit 30 inside. The sensor unit 10, the notification unit 20, and the relay circuit 30 are electrically connected to each other by wires or the like.

[0021] <Sensor section> The sensor unit 10 is for detecting the surface position C1 of the concrete C. As shown in Figure 1, the sensor unit 10 is attached to the outer surface of the hose unit H such that the detection unit (a pair of electrodes 12, described later) is at the same height as the target height position T of the hose unit H, which corresponds to the surface position C1 of the concrete C. The worker can position the concrete vibrator CV at the height required for compaction by pouring concrete C until the surface position C1 of the concrete C reaches the detection unit of the sensor unit 10.

[0022] As shown in Figures 2 and 3, the sensor unit 10 includes a base unit 11 attached to the hose unit H of the concrete vibrator CV, a pair of electrodes 12 that conduct electricity through the concrete C, a support member 13 for attaching the base unit 11 to the hose unit H, and a connecting member 14 for electrically connecting the pair of electrodes 12 to the relay circuit 30. The sensor unit 10 detects the surface position C1 of the concrete C using a pair of electrodes 12 which are detection units, and outputs to the notification unit 20 via the relay circuit 30 that the surface position C1 of the concrete C has been detected.

[0023] The base portion 11 is a component for attaching a pair of electrodes 12 while spaced apart from the outer surface of the hose portion H. As shown in Figure 3, the base portion 11 has an attachment portion 11a that is attached to the hose portion H, an extended portion 11b that extends away from the attachment portion 11a in a top view, and a fixing portion 11c that extends downward from the extended portion 11b and to which the pair of electrodes 12 are fixed. The base portion 11 also has a reinforcing portion 11d that connects and reinforces the attachment portion 11a and the fixing portion 11c. The top view refers to the view from above in Figure 3. The extended portion 11b ensures that the pair of electrodes 12 are positioned away from the mounting portion 11a of the base portion 11 when viewed from above. Therefore, when the concrete vibrator compaction height control device 1 is attached to the concrete vibrator CV, the pair of electrodes 12 are mounted spaced apart from the outer surface of the hose portion H.

[0024] The mounting portion 11a, the extension portion 11b, and the fixing portion 11c are provided in pairs, corresponding to a pair of electrodes 12. One mounting portion 11a, the extension portion 11b, and the fixing portion 11c (first base portion) is provided with a first electrode 12a, which will be described later, and the other mounting portion 11a, the extension portion 11b, and the fixing portion 11c (second base portion) is provided with a second electrode 12b. The first base portion and the second base portion are made of resin, for example, and each has an inverted U-shape that opens downwards. As the base portion 11 is divided into two parts, the base portion 11 can be easily attached to the hose portion H. Furthermore, the base portion 11 is not limited to a two-part configuration; it may also be formed as a single, integrated unit.

[0025] The mounting portion 11a is a plate-shaped member that is detachably attached to the hose portion H and extends vertically along the hose portion H. Because the mounting portion 11a extends vertically, the mounting strength of the base portion 11 to the hose portion H can be improved. The mounting portion 11a is detachably attached to the hose portion H by the support member 13.

[0026] The extended portion 11b is a plate-shaped member that extends horizontally to separate the pair of electrodes 12 from the hose portion H, and is a portion that extends horizontally outward from the upper end of the mounting portion 11a. A connecting member 14 extending from the pair of electrodes 12 is fixed to the extended portion 11b. The fixing portion 11c is the part to which the pair of electrodes 12 are fixed, and is a plate-shaped member that extends downward from the tip of the extending portion 11b. The fixing portion 11c extends parallel to the mounting portion 11a. In this way, the extending portion 11b that extends outward from the mounting portion 11a positions the fixing portion 11c at a distance from the hose portion H. Therefore, the pair of electrodes 12 are provided at a distance from the mounting portion 11a of the base portion 11 when viewed from above.

[0027] The reinforcing portion 11d is a rib for reinforcing the base portion 11, connecting the lower end of the mounting portion 11a and the intermediate portion of the fixing portion 11c in the vertical direction. By connecting the mounting portion 11a and the fixing portion 11c with the reinforcing portion 11d, the rigidity of the base portion 11 can be increased.

[0028] The first base portion and the second base portion are located on opposite sides of the hose portion H when viewed from above. More specifically, when the base portion 11 is attached to the hose portion H, the pair of extending portions 11b extend in opposite directions from the mounting portion 11a when viewed from above. In other words, the opening angle of the pair of extending portions 11b is approximately 180 degrees. Because the pair of extending portions 11b are located on opposite sides of the mounting portion 11a, contact between the pair of electrodes 12 can be suppressed. Note that the opening angle of the pair of extending portions 11b when viewed from above is not limited to 180 degrees.

[0029] The pair of electrodes 12 are detection units for detecting the surface position C1 of the concrete C. As shown in Figure 2, the pair of electrodes 12 are attached to the hose section H by the base section 11. Specifically, the pair of electrodes 12 are attached at the same height position T of the hose section H that corresponds to the surface position C1 of the concrete C. In other words, when the concrete C is poured, the height position of the pair of electrodes 12 and the surface position C1 of the concrete C will be at the same height.

[0030] The pair of electrodes 12 are, for example, long copper plates in the vertical direction, and include a first electrode 12a fixed to the outer surface of the fixing portion 11c of the first base, and a second electrode 12b fixed to the outer surface of the fixing portion 11c of the second base. When the lower ends of the first electrode 12a and the second electrode 12b come into contact with the concrete C, current flows through the first electrode 12a and the second electrode 12b via the moisture in the concrete C. When current flows through the first electrode 12a and the second electrode 12b, current flows through the relay circuit 30, and the light-emitting portion 21 of the notification unit 20 lights up.

[0031] As shown in Figure 3, the pair of electrodes 12 are each screw-fixed to the lower end of the fixing portion 11c. More specifically, since the lower end of the fixing portion 11c is positioned below the lower end of the mounting portion 11a, the first electrode 12a and the second electrode 12b are positioned below the mounting portion 11a. Therefore, when the pair of electrodes 12 are inserted into the concrete C, it is possible to prevent the mounting portion 11a from being inserted into the concrete C and becoming contaminated.

[0032] As shown in Figure 3, the pair of electrodes 12 are positioned away from the mounting portion 11a of the base portion 11 when viewed from above. In other words, the pair of electrodes 12 are attached to the base portion 11 such that they are each spaced a predetermined distance apart from the hose portion H. In other words, a space is formed between the first electrode 12a and the second electrode 12b and the hose H. Therefore, compared to the case where the first electrode 12a and the second electrode 12b are directly attached to the outer surface of the hose H without forming a space between them, concrete slurry C is less likely to adhere to the first electrode 12a and the second electrode 12b. As a result, the detection accuracy of the surface position C1 can be improved. Furthermore, since the first electrode 12a and the second electrode 12b are positioned near the hose section H, poor conductivity is suppressed compared to, for example, a case where the first electrode 12a is in contact with the concrete C and the second electrode 12b is in contact with the reinforcing bars arranged in the concrete C to conduct electricity. Moreover, the first electrode 12a and the second electrode 12b can be easily energized simply by lowering the hose section H to the concrete placement position.

[0033] In this way, by arranging the pair of electrodes 12 so as to be separated from the hose H, the surface position C1 of the concrete C can be accurately detected while avoiding the concrete slurry adhering to the hose H. Furthermore, by arranging the pair of electrodes 12 near the hose H, current can be easily supplied to the pair of electrodes 12 while suppressing poor conductivity.

[0034] In this embodiment, the lower ends of the first electrode 12a and the second electrode 12b are positioned at the same height, but the lower ends of the first electrode 12a and the second electrode 12b may be at different heights. In this case, the lower end of the electrode that is positioned higher than the first electrode 12a and the second electrode 12b should be attached at the same height as the target height position T.

[0035] As shown in Figure 3, the support member 13 is, for example, a long belt member to which the base portion 11 is detachably attached. Specifically, the support member 13 is a hook-and-loop fastener tape, which is wrapped around both the pair of mounting portions 11a and the hose portion H to attach the base portion 11 to the hose portion H. By using a belt member, it can be attached to any position on the hose portion H. The support member 13 is not limited to a belt member, but may also be an engaging member such as a hook, a planar fastener, or a magnet. In this case, the base portion 11 may be attached to the hose portion H by engaging the engaging portion (e.g., a hook hole) provided on the mounting portion 11a with the engaged portion (e.g., a hook claw) provided on the hose portion H.

[0036] In this way, since the mounting portion 11a is detachably attached to the hose portion H by the support member 13, the target height position T (height position of the pair of electrodes 12) corresponding to the surface position C1 of the concrete C can be varied according to the concrete placement conditions of the concrete C.

[0037] As shown in Figure 2, the connecting member 14 is, for example, an electric wire, which electrically connects the pair of electrodes 12 and the relay circuit 30. The overall length of the connecting member 14 should be adjustable. For example, the overall length of the connecting member 14 can be easily changed by configuring it to connect to each other using spade terminals provided at the ends of multiple harnesses.

[0038] As shown in Figure 3, the connecting member 14 has a first cord 14a connected to the upper end of the first electrode 12a and a second cord 14b connected to the upper end of the second electrode 12b. The lower end of the first cord 14a is screw-fixed to the fixing part 11c of the first base, together with the first electrode 12a. The lower end of the second cord 14b is screw-fixed to the fixing part 11c of the second base, together with the first electrode 12a.

[0039] <Hochi Department> The notification unit 20 is attached to the hose unit H above the sensor unit 10 and notifies that the sensor unit 10 has detected the surface position C1 of the concrete C. The notification unit 20 emits light when a pair of electrodes 12 are energized through the concrete C. As shown in Figures 4 and 5, the notification unit 20 is housed in a transparent storage unit 40 and positioned in a location visible to the worker.

[0040] The notification unit 20 is a flexible, elongated light-emitting unit 21 provided along the inner surface of the storage unit 40. Specifically, the light-emitting unit 21 is an LED tape that emits light when an electric current is passed through a pair of electrodes 12 via moisture in the concrete C. The LED tape is a strip-shaped light-emitting body in which a plurality of LEDs 21a are regularly arranged on a resin tape.

[0041] In this way, by using a flexible, elongated light-emitting section 21, workers can more easily recognize the light even during bright daylight hours. Furthermore, by making the color of the light-emitting LED 21a blue, workers can recognize the light even more easily. The light-emitting part 21 may be positioned on the outer surface of the storage part 40, and may have a shape other than a strip. Furthermore, the light-emitting color may be other than blue, and may flash.

[0042] The notification unit 20 may also be a sound-producing unit that emits sound when a pair of electrodes 12 are energized through the concrete C. The sound-producing unit uses a speaker to notify that the sensor unit 10 has detected the surface position C1 of the concrete C. Thus, the notification unit 20 only needs to be able to notify workers with a simple configuration without using expensive equipment such as PCs or tablets.

[0043] <Relay Circuit> The relay circuit 30 is electrically connected to the sensor unit 10 and the notification unit 20, and outputs the input from the sensor unit 10 to the notification unit 20. Specifically, when the pair of electrodes 12 of the sensor unit 10 are energized, current flows to the light-emitting unit 21 of the notification unit 20, causing the LED 21a of the light-emitting unit 21 to light up. As shown in Figures 4 and 5, the relay circuit 30 is housed in the housing 40 together with the notification unit 20. The relay circuit 30 has a base 31 located in the housing 40, a relay module 32 for supplying current to the notification unit 20, and a battery 33 that powers the relay module 32 and the notification unit 20. The connecting member 14 is connected to the relay module 32 and the battery 33, and current flows to the relay circuit 30 when the pair of electrodes 12 of the sensor unit 10 are energized.

[0044] As shown in Figures 4 and 5, the base portion 31 is, for example, a wooden plate-like member. The base portion 31 has a module mounting portion 31a for attaching the relay module 32 and a battery mounting portion 31b for attaching the battery 33. The relay module 32 is a circuit that turns a switch on / off by mechanically opening and closing contacts using electromagnetic action, and is located on the module mounting portion 31a. The battery 33 is, for example, a 9V dry cell battery, and is placed in the battery mounting section 31b.

[0045] As shown in Figure 6, the first cord 14a extending from the first electrode 12a is connected to the trigger of the relay module 32 of the relay circuit 30. The second cord 14b extending from the second electrode 12b is connected to the DC- and battery 33 of the relay module 32. When the first electrode 12a and the second electrode 12b are energized, current flows through the coil of the relay module 32, generating an electromagnetic force. This electromagnetic force turns on the relay contacts, causing current to flow to the light-emitting section 21 and the LED 21a to light up. In this way, when concrete C reaches the sensor unit 10, the pair of electrodes 12 conduct electricity through the moisture in the concrete C, causing current to flow to the relay circuit 30. Then, the relay circuit 30 causes the light-emitting unit 21 of the notification unit 20 to light up, allowing the worker to recognize that the vibrating unit V has been positioned in the appropriate location in the concrete C.

[0046] <Storage section> As shown in Figure 2, the storage unit 40 is attached to the hose unit H above the sensor unit 10 and houses the notification unit 20 and the relay circuit 30 inside. As shown in Figures 4 and 5, the storage unit 40 has a case 41 for housing the notification unit 20 and the relay circuit 30, a lid 42 that covers the case 41, and a retaining member 43 for attaching the storage unit 40 to the hose unit H. The case portion 41 and lid portion 42 of the storage portion 40 are detachably attached to the hose portion H by a retaining member 43. The storage portion 40 also has a cushioning material (not shown) to suppress misalignment, and houses the notification unit 20 and relay circuit 30 together with the cushioning material.

[0047] As shown in Figures 4 and 5, the case portion 41 is, for example, a transparent rectangular container made of resin, and has a storage space inside. The shape of the case portion 41 is not limited to rectangular; it may also be circular or other shapes. The light-emitting part 21 is positioned on the inner surface of the case part 41. Since the light-emitting part 21 is positioned to surround the case part 41, it becomes easier for the worker to see the light-emitting part 21.

[0048] As shown in Figures 4 and 5, the lid 42 is detachably attached to the opening of the case 41. By covering the opening of the case 41 with the lid 42, it is possible to prevent concrete C, rainwater, dust, etc. from adhering to the notification unit 20 and the relay circuit 30. The lid portion 42 is preferably attached to the case portion 41 via a gasket (not shown). Providing a gasket can further enhance water resistance, stain resistance, and dust resistance.

[0049] As shown in Figure 5, the retaining member 43 is, for example, a long belt member that detachably attaches the case portion 41 and the lid portion 42. Specifically, the retaining member 43 is a hook-and-loop fastener tape fixed to the outer surface of the case portion 41, and the hose portion H is wrapped around it to attach the case portion 41 and the lid portion 42 to the hose portion H. By using a belt member, it can be attached to any position on the hose portion H. The retaining member 43 is not limited to a belt member, but may also be a locking member such as a hook, a flat fastener, or a magnet. In this case, the storage unit 40 may be attached to the hose unit H by engaging the locking portion provided on the case unit 41 (for example, the hook portion of a flat fastener) with the locking portion provided on the hose unit H (for example, the loop portion of a flat fastener).

[0050] In this way, since the case portion 41 and the lid portion 42 are detachably attached to the hose portion H by the retaining member 43, the light-emitting portion 21 of the notification unit 20 can be positioned in a location that is easily visible to the operator. Furthermore, the storage unit 40 does not necessarily have to be attached to the hose unit H; it may also be attached to a fence provided on the worker's scaffolding. Even when the vibrating unit V is positioned deep from the worker's scaffolding, extending the connecting member 14 and positioning the storage unit 40 near the worker makes it easier to recognize when the sensor unit 10 has reached the surface position C1 of the concrete C.

[0051] With the above configuration, the pair of electrodes 12 provided on the hose section H are energized via the moisture in the concrete C, causing the light-emitting section 21 of the notification section 20 to emit light. Therefore, the surface position C1 of the concrete C can be recognized with a simple configuration without the need for measurement using equipment. Furthermore, by positioning the pair of electrodes 12 so as to be separated from the hose portion H, the surface position C1 of the concrete C can be accurately detected while avoiding the concrete slurry adhering to the hose portion H.

[0052] Next, a method for compacting concrete C using the concrete vibrator compaction height control device 1 will be explained based on Figures 7 and 8. First, as shown in Figure 7, the worker places the concrete vibrator CV, to which the concrete vibrator compaction height control device 1 is attached, at the concrete placement location C. Specifically, the worker attaches the base unit 11 to the hose unit H so that the pair of electrodes 12 are at the same height as the target height position T of the hose unit H. Then, the worker attaches the storage unit 40 to the hose unit H. At this time, the storage unit 40 is positioned so that the light-emitting unit 21 is easily visible to the worker. Then, the worker grasps the hose unit H and lowers the vibrating unit V from the scaffolding to the concrete placement location C. Afterward, the worker pours concrete C into the pouring location using concrete hose C2. The water level of the poured concrete C gradually rises.

[0053] As shown in Figure 8, when the amount of poured concrete C increases and the surface position C1 reaches the pair of electrodes 12 of the sensor unit 10, the pair of electrodes 12 conduct electricity through the moisture in the concrete C. Then, current flows through the relay circuit 30, and the light-emitting unit 21 of the notification unit 20 lights up. When the light is emitted, the worker finishes pouring the concrete C and, in this state, vibrates the vibrating unit V to compact the concrete C.

[0054] In this way, the relay circuit 30 causes the light-emitting unit 21 of the notification unit 20 to light up, allowing the worker to recognize that the concrete vibrator CV has been positioned in the appropriate location in the concrete C. In the method described above, the vibrating unit V is lowered to the concrete C pouring position first, and then the concrete C is poured. However, the concrete C may be poured at the same time as the vibrating unit V is lowered. Alternatively, the concrete C may be poured first, and then the vibrating unit V may be lowered until the pair of electrodes 12 reach the surface position C1 of the concrete C (until the notification unit 20 lights up).

[0055] In the above embodiment, the concrete vibrator compaction height control device according to the present invention was mainly described. However, the embodiments described above are merely examples to facilitate understanding of the present invention and do not limit it. The present invention can be modified and improved without departing from its spirit, and of course, equivalents thereof are included. [Explanation of Symbols]

[0056] 1. Concrete vibrator compaction height control device 10 Sensor section 11 Base section 11a Mounting part 11b Extension 11c Fixed part 12 electrodes 12a First electrode 12b Second electrode 13 Support Member 14 Connecting Members 14a First Code 14b Second chord 20 Hochi Department 21 Light-emitting part 21a LED 30 Relay Circuits 31 Base 31a Module mounting section 31b Battery mounting section 32 relay modules 33 Batteries 40 Storage compartments 41 Case section 42 Lid 43 Retaining member CV Concrete Vibrator V Vibrating part H Hose section I Inverter C Concrete C1 surface position C2 Concrete Hose

Claims

1. A concrete vibrator compaction height control device that manages the height position of a concrete vibrator that compacts concrete by vibration, A sensor unit for detecting the surface position of the concrete, The system includes a notification unit that notifies that the sensor unit has detected the surface position of the concrete, The aforementioned sensor unit is A base portion attached to the hose portion of the concrete vibrator, The base portion is provided with a pair of electrodes that conduct electricity through the concrete, The base portion has a mounting portion that is attached to the hose portion, The pair of electrodes are provided in a position away from the mounting portion of the base portion when viewed from above. Each of the pair of electrodes is positioned on opposite sides of the mounting portion. The notification unit is characterized in that it emits light or sounds when the pair of electrodes are energized through the concrete, thus providing a concrete vibrator compaction level control device.

2. A relay circuit for electrically connecting the sensor unit and the notification unit, It comprises a housing that houses the notification unit and the relay circuit inside, The concrete vibrator compaction level control device according to claim 1, characterized in that the storage unit is detachably attached to the hose unit.

3. The notification unit is a flexible, elongated light-emitting unit provided along the inner surface of the storage unit, The concrete vibrator compaction level control device according to claim 2, characterized in that the light-emitting part emits light when the pair of electrodes are energized through the concrete.

4. The concrete vibrator compaction height control device according to any one of claims 1 to 3, characterized in that the mounting portion extends vertically along the hose portion and is detachably attached to the hose portion.

5. The base portion has an extended portion that extends away from the mounting portion when viewed from above, and a fixing portion that extends downward from the tip of the extended portion and to which the pair of electrodes are fixed. The lower end of the fixing portion is positioned lower than the lower end of the mounting portion. The concrete vibrator compaction height control device according to claim 4, characterized in that the pair of electrodes are fixed to the lower end of the fixed portion.

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