CN217654504U - Electromagnetic type settlement measuring device - Google Patents

Abstract

The utility model discloses an electromagnetic settlement measuring device, which comprises a measuring ruler, a bracket, a settlement conduit and a settlement probe; the bracket is provided with a guide device, the measuring scale penetrates through the guide device and is connected with the sedimentation probe, and the guide device guides the measuring scale to move downwards or ascend along the sedimentation guide pipe. The electromagnetic type settlement measuring device of the utility model guides the measuring tape to move downwards and upwards during measurement by arranging the guiding device, reduces the contact between the measuring tape and the settlement guide pipe in the measuring process, lightens the friction between the measuring tape and the settlement guide pipe to a great extent, and prolongs the service life of the measuring tape compared with the traditional measuring mode; meanwhile, the measuring tape can be conveniently folded and unfolded, and the operation convenience of the device is improved.

Description

Electromagnetic type settlement measuring device

Technical Field

The utility model belongs to the technical field of earth and rockfill dam safety monitoring, concretely relates to electromagnetic type settlement measurement device.

Background

The internal settlement deformation of the dam is one of the most concerned key items for the safety monitoring of the earth and rockfill dam, and the electromagnetic type settlement meter is widely applied to the settlement monitoring of the earth and rockfill dam as a traditional monitoring instrument all the time. The electromagnetic settlement meter has the basic principle that when a measuring probe reaches the position of a settlement ring, a magnetic field of the settlement ring is induced, a lead in a measuring ruler transmits a signal to a measuring and controlling plate of the settlement meter, a reed switch of the measuring and controlling plate is closed and emits an acousto-optic signal, the depth of the corresponding settlement ring is measured and read through the measuring ruler connected to the probe, and the depth variation quantity in interval time periods, namely the settlement quantity, is obtained. Along with the continuous rise of dam height, the gradual deepening of settlement monitoring depth and the improvement of monitoring precision requirements of the design of the earth-rock dam in China, the limitations caused by factors such as the structure and materials of the electromagnetic settlement meter in the monitoring application process are gradually highlighted. Engineering experience shows that the traditional electromagnetic type settlement meter cannot meet the requirements of settlement monitoring of the high earth-rock dam in the aspects of precision guarantee, measurement convenience and the like due to the characteristics of deep settlement monitoring depth, large settlement deformation, complex stress distribution and the like of the high earth-rock dam. Research has shown that the ductility error of the traditional electromagnetic type settlement meter caused by gravity is not negligible, and the ductility error of the measuring scale is directly caused by the longer length and heavier dead weight of the measuring scale of the wide-range electromagnetic type settlement meter. Because the traditional wide-range electromagnetic type settlement meter measuring ruler has heavy dead weight, 3-4 measuring and reading personnel are often required to cooperate for 2-3 hours to complete one measuring and reading operation in the actual measuring process; and the bare-handed retraction of the measuring tape easily generates unbalanced friction between the measuring tape and the sedimentation conduit, so that the measuring tape is worn and broken after long-term measurement and reading. After the traditional large-range electromagnetic type settlement meter is provided with the winch, the weight is often more than 10KG, and the traditional large-range electromagnetic type settlement meter is inconvenient to carry or transport. The problems greatly reduce the measurement and reading convenience, the measurement value stability and the service life of the electromagnetic settlement meter.

The Chinese patent application publication No. CN107741216A discloses an electromagnetic soil layer settlement measuring device, which comprises a support, a microprocessor, a signal cable and a settlement probe, wherein a resistance card is fixedly arranged in the signal cable, a sliding joint is fixedly arranged on the support, the signal cable penetrates out of the sliding joint and is connected with the settlement probe, the sliding joint is in sliding contact with the resistance card, the microprocessor is electrically connected with the tail end of the signal cable and the sliding joint through leads to form a closed loop, an electromagnetic switch is arranged on the closed loop, the sliding joint is always in contact with the resistance card when the signal cable slides in the sliding joint, the microprocessor can receive a feedback signal detected by the settlement probe to control the electromagnetic switch to be switched off, and the microprocessor automatically calculates, stores and displays the corresponding falling depth of the settlement probe according to the change of the resistance value in the closed loop. The invention is based on the principle of the sliding rheostat, the microprocessor automatically stores and displays the sinking data of the sinking probe, and the subjective error of manual reading is avoided. However, the problem that the signal cable is easy to wear and break after the settlement measuring device is used for a long time still exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electromagnetic type settlement measuring device, which can reduce the contact between a measuring ruler and a settlement guide pipe in the measuring process, greatly reduce the friction between the measuring ruler and the settlement guide pipe, and prolong the service life of the measuring ruler compared with the traditional measuring mode; meanwhile, the measuring tape can be conveniently folded and unfolded, and the operation convenience of the device is improved.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is:

the utility model provides an electromagnetic type settlement measuring device, includes measuring tape, support, subsides pipe and subsides the probe, its structural feature is: the bracket is provided with a guide device, the measuring scale penetrates through the guide device and is connected with the sedimentation probe, and the guide device guides the measuring scale to move downwards or ascend along the sedimentation guide pipe.

The guide device is arranged to guide the measuring scale to move downwards and upwards during measurement, so that the contact between the measuring scale and the sedimentation guide pipe in the measurement process is reduced, the friction between the measuring scale and the sedimentation guide pipe is reduced to a great extent, and the service life of the measuring scale is prolonged compared with the traditional measurement mode; meanwhile, the measuring tape can be conveniently folded and unfolded, and the operation convenience of the device is improved.

Preferably, the guide device comprises a first fixed pulley and a second fixed pulley, and the first fixed pulley and the second fixed pulley are both arranged at the top of the bracket; the measuring scale sequentially penetrates through the lower portion of the first fixed pulley and the upper portion of the second fixed pulley, and the first fixed pulley and the second fixed pulley guide the moving direction of the measuring scale. The first fixed pulley is a pressing wheel, the second fixed pulley is a guide wheel, and the combination of the first fixed pulley and the second fixed pulley realizes that the measuring tape is freely folded and unfolded, so that the measuring mode of the measuring device is more convenient and faster and is easy to operate.

Specifically, the diameter of the first fixed pulley is smaller than that of the second fixed pulley.

Specifically, the cross section of the measuring ruler is circular, and scales are arranged on the surface of the measuring ruler. The measuring tape with the first fixed pulley, the second fixed pulley and the circular cross section can be folded and unfolded freely, and the measuring tape is more convenient and easy to operate compared with a traditional measuring mode.

Preferably, an indium steel wire is arranged in the measuring ruler, and fibers are coated outside the indium steel wire. Adopt the indium steel wire that the light fiber parcel line elasticity coefficient that tensile strength is better is minimum as novel measuring tape, can reduce the measuring tape tensile deformation that the dead weight arouses to a great extent, and be difficult for receiving ambient temperature to influence the flexible deformation of measuring tape, effectively reduce measuring error.

Specifically, two signal wires are arranged in the measuring ruler and distributed on two sides of the indium steel wire.

Specifically, the support is a height-adjustable triangular support, and a level bubble is arranged on the support. The triangular support capable of stretching and freely adjusting the supporting legs can adapt to the engineering environment with poor ground flatness.

Specifically, the measuring tape is wound on a rotary drum, and a handle is arranged on the rotary drum. The measuring tape is wound on the rotary drum, and the rotary drum is operated through the handle, so that the measuring tape is convenient to fold and unfold.

Specifically, the rotary drum is provided with a measurement and control plate, and the measuring ruler is electrically connected with the measurement and control plate. When the settlement probe reaches the position of the settlement ring, the settlement probe induces the magnetic field of the settlement ring, the measuring ruler transmits signals to the measuring and control plate, the reed switch of the measuring and control plate is closed and sends out acousto-optic signals, and a measurer reads data through the measuring ruler to obtain depth variation quantity, namely settlement quantity, in interval time.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses an electromagnetic type settlement measuring device is through setting up guiding device, and the guide measuring tape moves down and rises during the measurement, reduces measuring tape and the contact of subsiding the pipe in the measurement process, and to a great extent has alleviateed the measuring tape and has subsided the friction between the pipe, has prolonged the life of measuring tape than traditional measurement mode.

2. The utility model discloses an electromagnetic type settlement measuring device is through setting up guiding device, and more convenient realization measuring tape receive and releases, has improved the simple operation nature of device.

3. Adopt the indium steel wire that the light fiber parcel line elasticity coefficient that tensile strength is better is minimum as novel measuring tape, can reduce the measuring tape tensile deformation that the dead weight arouses to a great extent, and be difficult for receiving ambient temperature to influence the flexible deformation of measuring tape, effectively reduce measuring error.

4. The triangular support that adopts scalable and freely adjust the stabilizer blade can adapt to the relatively poor engineering environment of ground roughness.

Drawings

Fig. 1 is a schematic structural view of an electromagnetic sedimentation measuring device of the present invention;

fig. 2 is a schematic structural view of the measuring tape in fig. 1.

In the figure: the device comprises a rotating cylinder 1, a handle 2, a measurement and control board 3, a measuring ruler 4, an indium steel wire 41, a signal wire 42, a support 5, a settlement guide pipe 6, a settlement probe 7, a guide device 8, a first fixed pulley 81, a second fixed pulley 82, a level bubble 9 and an electromagnetic settlement ring 10.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

As shown in fig. 1, an electromagnetic sedimentation measuring device includes a rotating cylinder 1, a handle 2, a measurement and control plate 3, a measuring tape 4, a support 5, a sedimentation conduit 6, a sedimentation probe 7 and a guiding device 8, wherein the guiding device 8 is arranged above the support 5. The guiding device 8 comprises a first fixed pulley 81 and a second fixed pulley 82, the first fixed pulley 81 and the second fixed pulley 82 are both arranged at the top of the bracket 5, and the diameter of the first fixed pulley 81 is smaller than that of the second fixed pulley 82. One end of the measuring ruler 4 is wound on the rotary drum 1, and the handle 2 is arranged on the rotary drum 1; the other end of the measuring tape 4 sequentially penetrates through the lower portion of the first fixed pulley 81 and the upper portion of the second fixed pulley 82 and is connected with the sedimentation probe 7, and the measuring tape 4 is slowly lowered or recycled along the sedimentation conduit 6 by rotating the handle 2. The rotary drum 1 is provided with a measurement and control plate 3, and the measuring tape 4 is electrically connected with the measurement and control plate 3. The support 5 realizes telescopically and freely adjusting through articulated mode and screw buckle, establishes circular air level 9 on 5 platforms of support, and support 5 is placed in the middle when the engineering site erects attention air level 9 to reach the purpose of thick flattening.

As shown in fig. 2, in order to ensure that the measuring tape can smoothly pass through the first fixed pulley and the second fixed pulley and the reading is convenient, the measuring tape 4 is designed to have a circular cross section and a graduated surface; the measuring tape 4 is formed by wrapping an indium steel wire 41 and two signal wires 42 by adopting light fibers with good tensile strength so as to overcome the defects of heavy dead weight, large ductility error and the like.

The detailed measurement process of this embodiment is: the support 5 is erected at the orifice of the settling duct 6, and the leveling bubble 9 is centered by adjusting the support 5 during erection, and the position of erection ensures that the measuring tape 4 can smoothly enter the central position of the settling duct 6 through the second fixed pulley 82. The handle 2 is rotated to enable the measuring tape 4 to be slowly lowered along the sedimentation conduit 6, after the sedimentation probe 7 senses the electromagnetic sedimentation ring 10, the signal wire 42 cuts magnetic lines, and signals are transmitted to the measurement and control board 3 through the signal wire 42 to generate acousto-optic signals. At the moment, the handle 2 is rotated to determine the depth of the measuring tape 4 when the acousto-optic signal is emitted, then the reading of the surface scale of the measuring tape 4 at the orifice of the settlement conduit 6 is visually measured by eyes, and the difference of the reading of the measuring tape 4 measured at 2 time points is the settlement amount of the electromagnetic settlement ring 10 at the interval time.

The above-mentioned embodiments are to be construed as illustrative and not limitative of the remainder of the disclosure, and it is to be understood that various equivalent modifications can be made without departing from the spirit and scope of the disclosure as set forth in the appended claims.

Claims (9)

1. The utility model provides an electromagnetic type settlement measuring device, includes measuring tape (4), support (5), subsides pipe (6) and subsides probe (7), its characterized in that: the support (5) is provided with a guide device (8), the measuring tape (4) penetrates through the guide device (8) and is connected with the sedimentation probe (7), and the guide device (8) guides the measuring tape (4) to move downwards or ascend along the sedimentation guide pipe (6).

2. The electromagnetic sedimentation measurement device according to claim 1, wherein: the guide device (8) comprises a first fixed pulley (81) and a second fixed pulley (82), and the first fixed pulley (81) and the second fixed pulley (82) are arranged at the top of the bracket (5); the measuring scale (4) sequentially penetrates through the lower portion of the first fixed pulley (81) and the upper portion of the second fixed pulley (82), and the first fixed pulley (81) and the second fixed pulley (82) guide the moving direction of the measuring scale (4).

3. The electromagnetic sedimentation measurement device according to claim 2, wherein: the diameter of the first fixed pulley (81) is smaller than that of the second fixed pulley (82).

4. The electromagnetic sedimentation measurement device according to claim 2, wherein: the cross section of the measuring ruler (4) is circular, and scales are arranged on the surface of the measuring ruler.

5. The electromagnetic sedimentation measurement device according to claim 1, wherein: an indium steel wire (41) is arranged in the measuring ruler (4), and fibers are coated outside the indium steel wire (41).

6. The electromagnetic sedimentation measurement device according to claim 5, wherein: two signal wires (42) are arranged in the measuring ruler (4), and the signal wires (42) are distributed on two sides of the indium steel wire (41).

7. The electromagnetic sedimentation measurement device according to claim 1, wherein: the support (5) is a triangular support with adjustable height, and a leveling bubble (9) is arranged on the support (5).

8. The electromagnetic sedimentation measurement device according to claim 1, wherein: the measuring tape (4) is wound on the rotary drum (1), and the rotary drum (1) is provided with a handle (2).

9. The electromagnetic sedimentation measurement device according to claim 8, wherein: the rotary drum (1) is provided with a measurement and control plate (3), and the measuring ruler (4) is electrically connected with the measurement and control plate (3).

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