JP3182773U - Sound wave generator in acoustic vibration type buried pipe exploration system - Google Patents

Abstract

Even a heavy sound wave generator can be connected to the end of a standpipe with good workability, and the sound wave generator is placed on the ground and connected to the end of the standpipe via a waveguide. In some cases, a sound wave generator that does not deteriorate the accuracy of the buried pipe exploration is provided.
SOLUTION: A sound wave generator 1 includes a housing 10 surrounding an acoustic device, and the housing 10 includes a top plate portion 10A having a sound wave outlet for sending out sound waves emitted from the acoustic device, and a side of the acoustic device. The top plate 10A is provided with a handle 15, and the bottom 10C is provided with a leg frame 16 for separating the bottom 10C from the ground during installation. And a beam frame portion 16B extending along the outer periphery of the bottom surface portion 10C.
[Selection] Figure 2

Description

  The present invention relates to a sound wave generator that is connected to an end portion of a buried pipe in an acoustic vibration type buried pipe exploration system.

  The acoustic vibration type buried pipe exploration system is for exploring the position and state of the buried pipe by sending characteristic sound waves into the buried pipe and capturing the strength of the sound wave that echoes from the buried pipe to the ground. FIG. 1 is an explanatory diagram showing an outline of this system. A sound wave generator J1 is connected to the end of a standpipe P1 (meter standpipe, water collecting pipe, etc.) branched from the buried pipe P and drawn to the ground, and the signal from the transmitter J2 is sent to the sound wave generator J1. By inputting, a sound wave is generated, and the sound wave is sent into the buried pipe P through the vertical pipe P1. The sound wave sent into the buried pipe P vibrates the buried pipe P and propagates to the ground. An operator detects a sound wave echoing on the ground (GL) from the buried pipe P using the vibration sensor J3 and listens directly to the detected sound through the headphones J4 or confirms the detection output of the receiver J5. Explore the location and state of the.

  By using such an acoustic vibration type buried pipe exploration system, it becomes possible to easily find the buried position without digging a buried pipe whose buried position information is unknown. In addition to exploration of the buried position, it is possible to investigate pipe disconnection parts, pipe breakage parts, pipe clogging parts due to water filling / sediment contamination, etc. by checking local increase / decrease in detection output. This becomes possible (see Patent Document 1 below).

JP 2009-236691 A

  The sound wave generator in the above-described acoustic vibration type buried pipe exploration system includes an acoustic device having a relatively large output in order to resonate a steel pipe or a cast iron pipe. For this reason, the weight of the sound wave generator itself increases, and there is a problem that the work of connecting the sound wave generator to the end portion of the standing pipe cannot be performed smoothly.

  If the sound generator cannot be directly connected to the end of the standpipe, the sound generator must be placed on the ground and connected to the end of the standpipe via a waveguide (hose). However, if the bottom surface of the sound generator is installed directly on the ground, the sound wave emitted from the bottom surface of the sound generator may propagate through the ground and be detected by the vibration sensor, which becomes noise and the accuracy of the buried pipe exploration There was concern that it would get worse.

  This invention makes it an example of a subject to cope with such a problem. In other words, even a heavy sound wave generator can be connected to the end of the standpipe with good workability, and the sound wave generator is placed on the ground and connected to the end of the standpipe via a hose. In this case, the purpose of the present invention is not to deteriorate the accuracy of the buried pipe exploration.

In order to achieve such an object, a sound wave generator in an acoustic vibration embedded pipe exploration system according to the present invention has at least the following configuration.
A housing that surrounds the acoustic device, and the housing includes a top plate portion that includes a sound wave outlet that sends out sound waves emitted from the acoustic device, a side surface portion that surrounds the side of the acoustic device, and a bottom surface portion. The top plate portion is provided with a handle, and the bottom surface portion is provided with a leg frame that separates the bottom surface portion from the installation surface during installation, and the leg frame extends along the outer periphery of the bottom surface portion. A sound wave generator in an acoustic vibration type buried pipe exploration system comprising a beam frame.

  According to the sound wave generator having such a feature, the housing is held in a state where the sound wave outlet is leveled by having the handle provided on the top plate and the beam frame of the leg frame provided on the bottom surface. It is possible to easily connect the sound wave outlet to the end of the vertical pipe. In addition, when the sound wave generator is installed on the ground or the like, since the bottom surface part is separated from the installation surface such as the ground by the leg frame, the sound wave emitted from the bottom surface part propagates to the installation surface and becomes noise of sound wave detection. Can be prevented.

It is explanatory drawing which showed the outline | summary of the acoustic vibration type buried pipe search system. It is the perspective view which showed the external appearance structure of the sound wave generator which concerns on one Embodiment of this invention. It is XX sectional drawing in FIG. It is a side view of the sound wave generator concerning one embodiment of the present invention. It is explanatory drawing which showed the connection state of the sound wave generator which concerns on one Embodiment of this invention. It is explanatory drawing which showed the connection state of the sound wave generator which concerns on one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 2 is a perspective view showing an external configuration of a sound wave generator according to an embodiment of the present invention, FIG. 3 is a sectional view taken along line XX in FIG. 2, and FIG. 4 is a view of the sound wave generator according to an embodiment of the present invention. It is a side view. The sound wave generator 1 includes a housing 10 that surrounds an acoustic device 2 disposed inside. The housing 10 includes a top plate portion 10A, a side surface portion 10B, and a bottom surface portion 10C. In the illustrated example, the top plate portion 10A has a disk shape, the side surface portion 10B has a cylindrical shape, and the bottom surface portion 10C has a disk shape. However, the top plate portion 10A and the bottom surface portion 10C have a rectangular plate shape. Thus, the side surface portion 10B may have a rectangular tube shape or the like.

  10 A of top-plate parts are equipped with the sound wave transmission port 11 which sends out the sound wave emitted from the acoustic apparatus 2 in the center. The sound wave outlet 11 is provided in the connecting portion 12 protruding from the top plate portion 10A. In addition, the top plate portion 10A is provided with an input terminal 13 for sending a signal to the acoustic device 2 and a purge valve portion 14 for purging the inside of the housing 10.

  A handle 15 is provided on the top plate 10A, and a leg frame 16 is provided on the bottom 10C. In the illustrated example, a pair of handles 15 are provided on both sides of the sound wave outlet 11. The leg frame 16 provided on the bottom surface portion 10C includes a column frame portion 16A and a beam frame portion 16B, and the beam frame portion 16B extends along the outer periphery of the bottom surface portion 10C.

  The sound wave generator 1 having such a configuration sends out the sound wave generated by the acoustic device 2 from the sound wave outlet 11 by connecting the connecting part 12 to the end of the stand pipe, and enters the buried pipe through the stand pipe. Can be sent. When performing the operation of connecting the sound wave generator 1 and the end of the stand pipe, the operator holds the handle 15 with one hand and the beam frame portion 16B of the leg frame 16 with the other hand. Lift 1 By using the beam frame portion 16B as a handle, it is possible to easily make a posture in which the sound wave outlet 11 is directed horizontally, and it is possible to easily perform the connection work.

  And when connecting the connection part 12 and a standing tube end part via a hose in the installation surface in the sound wave generator 1, the bottom face part 10C may be spaced apart from the installation surface by the leg frame 16 provided in the bottom face part 10C. it can. Thereby, it is possible to suppress the vibration emitted from the bottom surface portion 10C from being transmitted to the installation surface, and to avoid the deterioration of the search accuracy due to noise. As shown in FIG. 3, the sound absorbing material 17 is provided on the bottom surface portion 10 </ b> C, and by absorbing the sound wave emitted from the bottom surface portion 10 </ b> C by the sound absorbing material 17, it is possible to further suppress the deterioration of the search accuracy.

  5 and 6 are explanatory diagrams showing the connection state of the sound wave generator. The sound wave generator 1 is assigned the same reference numeral as in FIG. The example shown in FIG. 5 is an example in which the connection portion 12 of the sound wave generator 1 is directly connected to the end portion P1a of the standpipe P1. According to this, the sound wave emitted from the sound wave outlet 11 is directly sent into the vertical pipe P1, and is sent into the buried pipe through the vertical pipe P1. The example shown in FIG. 6 is an example in which the sound wave generator 1 is placed on the installation surface, and the connecting portion 12 and the end portion P1a are connected by the hose P2. According to this, the sound wave emitted from the sound wave outlet 11 is sent into the vertical pipe P1 via the hose P2, and is sent into the buried pipe via the vertical pipe P1.

  When the sound wave generator 1 according to the embodiment of the present invention is used, as shown in FIG. 5, when the sound wave generator 1 is directly connected to the end part P1a of the standing pipe P1, the handle 15 and the leg part 16 are provided. As shown in FIG. 6, when the sound wave generator 1 is placed on the installation surface, it is possible to prevent the sound waves that become noise from propagating to the installation surface. It becomes possible to search the buried pipe without deteriorating the accuracy.

  Further, the handle 15 of the sound wave generator 1 shown in FIG. 1 has a relatively large curved shape. By adopting the handle 15 having such a large curved shape, the sound generator 1 can be held by hooking the handle 15 to the hooked portion provided in the vicinity of the end P1a. Further, the sound wave generator 1 can be held with good balance even if the handle 15 having a large curved shape is held with one hand.

1: sound wave generator, 2: acoustic device,
10: Housing, 10A: Top plate portion, 10B: Side surface portion, 10C: Bottom surface portion,
11: Sound wave outlet, 12: Connection part, 13: Input terminal, 14: Purge valve part,
15: Handle, 16: Leg part, 16A: Column frame part, 16B: Beam frame part

Claims (3)

A housing surrounding the acoustic device;
The housing includes a top plate portion provided with a sound wave transmission port for sending out sound waves emitted from the acoustic device, a side surface portion and a bottom surface portion surrounding the side of the acoustic device,
The top plate portion is provided with a handle, and the bottom surface portion is provided with a leg frame that separates the bottom surface portion from the installation surface during installation, and the leg frame extends along the outer periphery of the bottom surface portion. A sound wave generator in an acoustic vibration type buried pipe exploration system comprising a beam frame.   The sound generator in the acoustic vibration type buried pipe exploration system according to claim 1, wherein a pair of the handles are provided on both sides of the sound wave transmission port.   The sound generator in an acoustic vibration type buried pipe exploration system according to claim 1 or 2, wherein a sound absorbing material that absorbs sound waves emitted from the bottom surface is provided on the bottom surface.

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