CN212160104U - Tunnel transient electromagnetic semi-automatic scanning type detection device - Google Patents

Abstract

The utility model discloses a semi-automatic scanning formula detection device of tunnel transition electromagnetism, include: the supporting assembly comprises a first supporting part and a second supporting part, the first supporting part is vertically arranged on an external fixed object, one end of the second supporting part is movably connected with the upper end of the first supporting part, and the second supporting part can rotate in the horizontal direction relative to the first supporting part; the first gear is movably arranged at the other end of the second supporting part and can rotate in the vertical direction relative to the second supporting part; one end of the connecting support rod is fixedly arranged on the first gear and can rotate in the vertical direction along with the first gear; the supporting wire frame is fixedly arranged at the other end of the connecting support rod and can rotate along with the vertical direction of the connecting support rod, the supporting wire frame is used for fixedly arranging the transmitting coil or/and the receiving coil, the device realizes multi-directional multi-angle adjustment of a water-containing structure, obtains richer geological information, and greatly improves the detection quality and the detection efficiency.

Description

Tunnel transient electromagnetic semi-automatic scanning type detection device

Technical Field

The utility model relates to an underground exploration technical field especially relates to a semi-automatic scanning formula detection device of tunnel transition electromagnetism.

Background

The Transient Electromagnetic Method (TEM) is a method of transmitting a primary electromagnetic field to the underground using an ungrounded coil, and observing a secondary eddy current field using the ungrounded coil during a primary field pause, and the physical basis of the method is the electromagnetic induction principle. The transient electromagnetic method has the characteristics of sensitive reaction to low resistance bodies including water-conducting structures, and the like, capability of simultaneously carrying out depth measurement and profile measurement, high working efficiency and the like, is used for underground and underground hydrological investigation in recent years, can find out water-containing geology such as karst caves and channels, coal mine goafs, deep irregular water bodies, underground metals and the like, and is a method with great development prospect.

In order to ensure the safety of tunnel construction in high-risk lava areas and reduce the loss of disasters such as water outburst and mud outburst, the advanced prediction of the water-containing structure of the tunnel by using transient electromagnetism is very important, along with the construction of a plurality of deeply buried long and large tunnels, the more complex geological conditions provide higher requirements for detection precision and positioning of bad geological bodies, and the water-containing structure needs to be observed in a multi-azimuth and multi-angle manner, so that more abundant geological information is obtained.

Carry out the all-round detection in three-dimensional space to unusual bodies such as tunnel moisture structure, underground metal and can obtain higher resolution ratio and improve production efficiency, take the detection to a certain direction as an example, use the level to carry out the sector to this direction and survey and can realize the diversified multi-angle detection to this direction to upwards surveying scope + 45 degrees and survey scope-45 degrees downwards as the benchmark, and, can adjust and finely tune the detection gesture of wire frame at any time according to actual detection needs when surveying, survey the gesture to the position of wire frame, orientation etc. and adjust in order to obtain better detection effect, but there are following technical problem in the prior art:

1. no device in the prior art can adjust the detection posture of the wire frame at any time according to actual detection requirements, and the existing transient electromagnetic measurement device cannot finely adjust the support in the measurement process, so that the detection direction of the coil is inconvenient to adjust when the wire frame is fixed on the support.

2. The existing transient electromagnetic measuring device cannot realize scanning type detection in the vertical direction, the horizontal direction or any other directions, and when the measurement posture changes every time, the fixed posture of the wire frame on the measuring device needs to be readjusted, so that the adjustment is inconvenient, and the detection efficiency is seriously influenced due to the time consumption. Moreover, the situation that the pre-adjustment standard cannot be met easily occurs after adjustment, and the detection quality is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of above-mentioned prior art, provide a semi-automatic scanning formula detecting device of tunnel transition electromagnetism, the utility model discloses can realize the diversified multi-angle adjustment to the structure that contains water to obtain abundanter geological information, and, this device still makes things convenient for the position of line frame and the detection gesture such as orientation in time to adjust, has improved detection quality and detection efficiency greatly.

In order to solve the technical problem, the utility model provides a following technical scheme:

a tunnel transient electromagnetic semi-automatic scanning type detection device comprises:

the supporting assembly comprises a first supporting part and a second supporting part, the first supporting part is vertically arranged on an external fixed object, one end of the second supporting part is movably connected with the upper end of the first supporting part, and the second supporting part can rotate in the horizontal direction relative to the first supporting part;

the first gear is movably arranged at the other end of the second supporting part and can rotate in the vertical direction relative to the second supporting part;

one end of the connecting support rod is fixedly arranged on the first gear and can rotate in the vertical direction along with the first gear;

and the supporting wire frame is fixedly arranged at the other end of the connecting support rod and can rotate along the vertical direction of the connecting support rod, and the supporting wire frame is used for fixedly arranging the transmitting coil or/and the receiving coil.

The utility model discloses can realize the diversified multi-angle adjustment to the structure that contains water to obtain richer geological information, and, this device is still convenient to survey gesture in time adjustment such as the position of line frame and orientation, has improved detection quality and detection efficiency greatly.

A long groove is formed in the center of the end part of the second supporting part connected with the first gear, and the first gear is installed in the long groove through a first gear shaft; two ends of the first gear shaft are arranged in two opposite side walls of the strip groove through bearings, one end of the first gear shaft penetrates through the side face of the second supporting part, and a 360-degree protractor is fixedly arranged on the penetrated wheel shaft. The plane of the 360-degree protractor dial is perpendicular to the first gear shaft, and the center of the 360-degree protractor dial is coaxial with the first gear shaft. The arrangement of the protractor helps an operator to conveniently observe the specific adjusting position of the connecting support rod, and more accurate measurement and more accurate adjustment are realized.

The long-strip groove formed in the center of the end part of the second supporting part is provided with a first supporting leg and a second supporting leg, the first gear is arranged between the two supporting legs, namely the first gear is arranged in the long-strip groove, and the first gear rotates around the first gear shaft relative to the two supporting legs.

First gear has towards the teeth of a cogwheel of rectangular groove outside to be interrupted, and the one end fixed connection of connecting branch is in the department of being interrupted of first gear, and the other end tip of connecting branch is formed with the blind hole, and the blind hole internal fixation is provided with the probe, and connecting branch is cylindrical connecting rod.

It is prior art in the art that the gears have gear shafts, which are not described in detail herein. The way that two ends of the gear shaft are installed in two opposite side walls of the long strip groove through the bearings to realize the rotation of the gear shaft is the prior art in the field, and is not described herein again.

In the working state, the plane of the two support legs is parallel to the ground. The teeth of a cogwheel are interrupted, and the one end of connecting branch is fixed to be set up on first gear, and, this connecting branch sets up in the intermittent part of teeth of a cogwheel, and connecting branch takes place for first gear around the ascending rotation in the vertical direction of this first gear. The teeth of a cogwheel have and be interrupted that the teeth of a cogwheel are not arranged and set up a week at first gear, and the teeth of a cogwheel is arranged on the gear and is had a breach, and this breach department fixedly connected with connects the one end of branch, and under the operating condition, it can be adjusted its position in vertical direction by first gear drive to connect branch. The gear teeth with the discontinuity and the gear may be integrally machined, or a part of the gear teeth with the circumferentially arranged gear teeth on the gear may be cut and removed by a human or a machine during further machining, so that the gear teeth have the discontinuity, and machining the gear teeth on the gear into the gear teeth with the discontinuity is prior art in the art, and will not be described herein again. One end of the connecting support rod can be welded on the first gear, or the connecting support rod and the first gear are integrally formed during processing. The connecting support rod is driven by the gear to be adjusted in the vertical direction, and the structure is simple and easy to operate.

And a second gear meshed with the first gear is further arranged in the long groove, the second gear is arranged in two opposite side walls of the long groove through a second gear shaft, and one end of the second gear shaft penetrates out of the side surface of the second supporting part to form a handle. Specifically, in this embodiment, the second gear is disposed between the two support legs, two ends of the second gear shaft are mounted on two opposite side walls of the long groove through bearings, the second gear rotates around the second gear shaft relative to the two support legs, and specifically, one end of the second gear shaft, which is close to the first support leg, penetrates through the first support leg and is formed with a handle.

The second gear is also provided with second gear teeth which are meshed and matched with the first gear. It is prior art in the art that the gears have gear shafts, which are not described in detail herein. The way that two ends of the second gear shaft are installed in two opposite side walls of the long strip groove through bearings to realize the rotation of the gear shaft is the prior art in the field, and the description is omitted here. It is prior art in the art to have a gear with teeth arranged in a circumferentially uniform arrangement. During operating condition, through waveing the handle, drive the second gear and rotate, and then drive the teeth of a cogwheel through the second teeth of a cogwheel on the second gear and rotate, connect branch and carry out the position adjustment of vertical direction under the drive of first gear, this regulative mode can realize simply easily operating through the manual handle of stirring of people.

Still be provided with the arrestment mechanism who is used for braking the second gear in the rectangular inslot, arrestment mechanism includes the connecting rod, torsional spring and the claw body, connecting rod fixed mounting is in rectangular inslot inside wall, claw body one end movable mounting is on the connecting rod, the claw body can rotate around the connecting rod, the other end is equipped with the most advanced of bending downwards that can inlay in the tooth's socket of second gear, torsional spring one end is connected on the connecting rod, the other end is not on the claw body, under the effect of torsional spring, the most advanced card of bending downwards of the claw body inlays in the tooth's socket of second gear, stop the second gear rotation.

The braking mechanism is arranged between the two supporting legs, and under the action of the torsion spring, the other end of the claw body is clamped in a tooth groove of the second gear. The mounting of the pawl on an external support means such as a linkage by a torsion spring is prior art in the art and will not be described further herein. During the operating condition, use the hand or outside to dial the thing and pick up the other end of the claw body, make the claw body break away from with the tooth's socket of second gear, when the second gear rotates to the preset adjustment position, loosen the claw body of picking up, under the effect of torsional spring, the tip card of bending downwards of the claw body inlays the position after the preset adjustment on the second teeth of a cogwheel, and the second gear is firmly fixed, and then connecting branch is firmly fixed. The fixing of the connecting supporting rod is realized through the braking mechanism.

The connecting strut is a cylindrical connecting rod.

First supporting part top is passed through the axis of rotation and is linked to each other with second supporting part one end, and the second supporting part passes through the axis of rotation for first supporting part and rotates in the horizontal direction, drives through the rotation of first supporting part and connects branch and adjust on the horizontal direction, and simple structure easily operates. The second supporting part is also provided with a compass. It is known in the art to provide a rotating shaft as a connecting member between two members to achieve relative rotation of the two members, and will not be described herein. The compass and the manner of fixing the compass to the external support are well known in the art and will not be described herein. The arrangement of the compass helps operators to conveniently observe the specific adjusting position of the connecting supporting rod, and more accurate measurement and more accurate adjustment are realized.

The first supporting part is also provided with a tripod. The fixing of the support by means of a tripod is prior art in the field and will not be described in detail here. The tripod realizes the stability of the device when fixed and is convenient to carry and move.

A supporting wire frame applied to a tunnel transient electromagnetic semi-automatic scanning type detection device is a rectangular frame with each side being adjustable, four inner angles of the rectangular frame are fixedly connected with four end portions of a cross adjustable supporting frame, each side of the rectangular frame comprises a connecting sleeve located in the middle, two ends of each connecting sleeve are provided with a first supporting rod capable of penetrating into the connecting sleeve, and each connecting sleeve is provided with a screw hole in which a screw is screwed for fastening the first supporting rod; the connecting sleeve is also provided with a lead connector which can be used for connecting the coil fixed on the wire frame with an external connecting wire. It is prior art in the art to arrange the wire connections on the support wire frame and will not be described in detail here.

The cross-shaped adjustable support frame comprises a cross-shaped sleeve, wherein two ends of the cross-shaped sleeve are respectively provided with a second support rod capable of penetrating into the cross-shaped sleeve, and the cross-shaped sleeve is provided with a screw hole in which a screw is screwed for fastening the second support rod;

the center of the cross-shaped sleeve is fixedly arranged at the end part of the connecting support rod.

The connecting sleeve is also provided with a U-shaped fixing buckle. The bottom mounting of the fixed buckle of U-shaped sets up on connecting sleeve, and this fixed mode can be welded, also can be integrated into one piece when processing manufacturing, for prior art in this field, during the use, fixes transmitting coil or transmitting coil and receiving coil in the fixed buckle of U-shaped, and the coil is firmly fixed, and it is prior art in this field to fix outside loop coil through the fixed buckle of U-shaped, and no longer the description here.

The center position of the cross-shaped sleeve is provided with a through hole, and the other end of the connecting support rod is embedded and fixed in the through hole. In this embodiment, the end face of the other end of the connecting strut slightly protrudes out of the through hole, the connecting strut can be fixed in the through hole in a welding or interference fit manner, and the external connecting member is embedded and fixed in the through hole and the used embedding and fixing manner is the prior art in the field, which is not described herein again.

The utility model provides a support wire frame's size is adjustable, conveniently places not unidimensional coil.

The connection sleeve or the cross-shaped sleeve is provided with a through screw hole, and the screw is screwed into the screw hole and presses and fixes the external connecting piece embedded in the sleeve or the cross-shaped sleeve.

In this embodiment, the first support rod is fixed in the connecting sleeve and the two support rods are fixed in the cross-shaped sleeve in the same manner.

A probe is also arranged in the blind hole. The blind hole is a cylindrical groove.

The probe and the transmitting coil or the transmitting coil and the receiving coil are also in line connection with an external transient electromagnetic instrument, so that the signal receiving and transmitting conditions and the transmitted and received signals are conveniently controlled through the transient electromagnetic instrument.

The first supporting part is composed of at least two sections of telescopic rods which are sleeved together, and every two sections of telescopic rods are connected through threads. First supporting part includes first telescopic link and second telescopic link, and the external screw thread has been seted up along circumference to the lower part of second telescopic link, and cylindrical recess has been seted up to the upper end of first telescopic link, seted up on the internal face of recess with external screw-thread fit's internal thread, the degree of depth of cylindrical recess is less than half of first telescopic link length, and the second telescopic link is precession or screw-out in cylindrical recess. The cylindrical groove is formed in the top of the telescopic rod, the cylindrical groove is the prior art in the field, the cylindrical groove is not described herein any more, the height detected by the supporting wire frame can be directly adjusted by screwing the second telescopic rod on the first telescopic rod up and down during use, and the device can be applied to a multipoint array type detection method.

The utility model has the advantages that,

1. in the utility model, the first supporting part is vertically arranged on an external fixture, one end of the second supporting part is movably connected with the upper end of the first supporting part, and the second supporting part can rotate in the horizontal direction relative to the first supporting part; the fixed setting of support wire frame can take place vertical direction along with connecting branch and rotate on the connecting branch other end, the utility model discloses can realize the diversified multi-angle adjustment to the structure that contains water to obtain abundanter geological information, and, this device still makes things convenient for the position of wire frame and survey gesture such as orientation in time to adjust, has improved detection quality and detection efficiency greatly.

2. The utility model discloses in, still have the second teeth of a cogwheel that matches with the meshing of first gear on the second gear. It is prior art in the art that the gears have gear shafts, which are not described in detail herein. The way that two ends of the second gear shaft are installed in two opposite side walls of the long strip groove through bearings to realize the rotation of the gear shaft is the prior art in the field, and the description is omitted here. It is prior art in the art to have a gear with teeth arranged in a circumferentially uniform arrangement. During operating condition, through waveing the handle, drive the second gear and rotate, and then drive the teeth of a cogwheel through the second teeth of a cogwheel on the second gear and rotate, connect branch and carry out the position adjustment of vertical direction under the drive of first gear, this regulative mode can realize simply easily operating through the manual handle of stirring of people.

3. The utility model discloses in, second supporting part side is worn out to one of them end of first gear shaft, and the epaxial fixed mounting who wears out has 360 metrics angle ware. The plane of the 360-degree protractor dial is perpendicular to the first gear shaft, and the center of the 360-degree protractor dial is coaxial with the first gear shaft. The arrangement of the protractor helps an operator to conveniently observe the specific adjusting position of the connecting support rod, and more accurate measurement and more accurate adjustment are realized.

4. The utility model discloses in, the axis of rotation is passed through at first supporting part top and is linked to each other with second supporting part one end, and the second supporting part passes through the axis of rotation for first supporting part and rotates in the horizontal direction, drives through the rotation of first supporting part and connects branch and adjust simple structure easy operation on the horizontal direction. The second supporting part is also provided with a compass. The arrangement of the compass helps operators to conveniently observe the specific adjusting position of the connecting supporting rod, and more accurate measurement and more accurate adjustment are realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention in any way. In the drawings:

fig. 1 is a side view of the overall structure of a tunnel transient electromagnetic semi-automatic scanning type detection device according to an embodiment of the present invention;

fig. 2 is a plan view showing a positional relationship between a second support portion and a support wire frame according to an embodiment of the present invention;

FIG. 3 is a top plan view of the braking mechanism shown in FIG. 2 at location A;

fig. 4 is a front view of the overall structure of a support wire frame according to an embodiment of the present invention;

FIG. 5 is a front view of the connection rod and the cross-shaped sleeve at the position B in FIG. 4;

fig. 6 is a side view showing a positional relationship between the first gear and the connecting rod according to the embodiment of the present invention;

fig. 7 is a front view showing a positional relationship between the first gear and the connecting rod according to the embodiment of the present invention;

fig. 8 is a schematic view of the position relationship of the second gear and the braking mechanism according to the embodiment of the present invention;

fig. 9 is a schematic view of a positional relationship between a tripod and a first support according to an embodiment of the present invention;

fig. 10 is a schematic view of a blind hole structure connecting the other end of the strut according to an embodiment of the present invention;

fig. 11 is a schematic cross-sectional view of a first support rod secured within a connecting sleeve according to an embodiment of the present invention;

fig. 12 is a schematic view of a connecting strut according to an embodiment of the present invention secured to a cross-shaped sleeve;

fig. 13 is a schematic view of a position relationship between the first telescopic rod and the second telescopic rod according to the embodiment of the present invention;

fig. 14 is a schematic cross-sectional position view of the first and second telescoping rods according to the embodiment of the present invention;

fig. 15 is a schematic view of the position relationship between the U-shaped fixing clip and the connecting sleeve according to the embodiment of the present invention;

wherein, 10-a first supporting part, 101-a first telescopic rod, 102-a second telescopic rod, 103-an external thread, 104-an internal thread, 105-a cylindrical groove, 11-a second supporting part, 111-a first supporting leg, 112-a second supporting leg, 12-a rotating shaft, 13-a compass, 14-a tripod, 20-a connecting supporting rod, 21-a blind hole, 30-a supporting wire frame, 31-a rectangular frame, 311-a first supporting rod, 312-a second supporting rod, 32-a connecting sleeve, 33-a screw, 34-a cross-shaped sleeve, 35-a through hole, 36-a lead connector, 37-a U-shaped fixed buckle, 40-a first gear, 41-a first gear shaft, 42-a gear tooth, 43-a second gear, 44-a second gear shaft, 45-handle, 46-second gear tooth, 47-360 protractor, 50-connecting rod, 51-torsion spring and 52-claw body.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

In the case of the example 1, the following examples are given,

referring to fig. 1-12 and fig. 15, a tunnel transient electromagnetic semi-automatic scanning detection apparatus includes:

the supporting assembly comprises a first supporting part 10 which is vertically arranged and a second supporting part 11 which is horizontally arranged, the first supporting part 10 is vertically arranged on an external fixed object, one end of the second supporting part 11 is movably connected with the upper end of the first supporting part 10, and the second supporting part 11 can rotate in the horizontal direction relative to the first supporting part 10;

a first gear 40 movably disposed at the other end of the second supporting portion 11, wherein the first gear 40 can rotate vertically relative to the second supporting portion 11;

one end of the connecting strut 20 is fixedly arranged on the first gear 40 and can rotate in the vertical direction along with the first gear 40;

and the supporting wire frame 30 is fixedly arranged at the other end of the connecting strut 20 and can rotate along with the connecting strut 20 in the vertical direction, and the supporting wire frame 30 is used for fixedly arranging a transmitting coil or/and a receiving coil.

The utility model discloses can realize the diversified multi-angle adjustment to the structure that contains water to obtain richer geological information, and, this device is still convenient to survey gesture in time adjustment such as the position of line frame and orientation, has improved detection quality and detection efficiency greatly.

A long groove is formed in the center of the end of the second support part 11 connected with the first gear 40, and the first gear 40 is mounted in the long groove through a first gear shaft 41; two ends of the first gear shaft 41 are mounted in two opposite side walls of the elongated slot through bearings (not shown), one end of the first gear shaft 41 penetrates through the side surface of the second support part, and a 360-degree protractor 47 is fixedly mounted on the penetrated wheel shaft 41. In the present embodiment, the plane of the 360-degree protractor dial 47 is perpendicular to the first gear shaft 41, and the center of the 360-degree protractor dial 47 is coaxial with the first gear shaft 41. The provision of the protractor facilitates the operator to observe the specific adjustment position of the connecting strut 20, enabling more accurate measurement and more accurate adjustment.

In this embodiment, the elongated slot formed in the center of the end of the second supporting portion 11 has a first leg 111 and a second leg 112, the first gear 40 is disposed between the two legs, that is, the first gear 40 is installed in the elongated slot, and the first gear 40 rotates around the first gear shaft 41 relative to the two legs.

The gear teeth 42 of the first gear 40 facing the outside of the elongated slot are interrupted, one end of the connecting support rod 20 is fixedly connected to the interrupted part of the first gear 40, a blind hole 21 is formed at the other end of the connecting support rod 20, a probe (not shown) is fixedly arranged in the blind hole 21, and the connecting support rod 20 is a cylindrical connecting rod.

It is prior art in the art that the gears have gear shafts, which are not described in detail herein. In this embodiment, the manner that two ends of the gear shaft are mounted in the two opposite side walls of the long strip groove through the bearings to realize the rotation of the gear shaft is the prior art in the field, and is not described herein again.

In the working state, the plane of the two support legs is parallel to the ground. The gear teeth 42 are discontinuous, one end of the connecting strut 20 is fixedly arranged on the first gear 40, and the connecting strut 20 is arranged at the discontinuous position of the gear teeth 42, and the connecting strut 20 rotates relative to the first gear 40 in the vertical direction around the first gear 40. The gear teeth 42 have a discontinuity, i.e. the gear teeth are not arranged around the first gear, the arrangement of the gear teeth on the gear has a gap, the gap is fixedly connected with one end of the connecting strut 20, and in an operating state, the connecting strut 20 can be driven by the first gear 40 to adjust its position in a vertical direction. The gear teeth with the discontinuity and the gear may be integrally machined, or a part of the gear teeth with the circumferentially arranged gear teeth on the gear may be cut and removed by a human or a machine during further machining, so that the gear teeth have the discontinuity, and machining the gear teeth on the gear into the gear teeth with the discontinuity is prior art in the art, and will not be described herein again. One end of the connecting rod 20 may be welded to the first gear 40, or the connecting rod 20 and the first gear 40 may be integrally formed when being processed. The connecting support rod is driven by the gear to be adjusted in the vertical direction, and the structure is simple and easy to operate.

A second gear 43 engaged with the first gear is further arranged in the elongated slot, the second gear 43 is mounted in two opposite side walls of the elongated slot through a second gear shaft 44, and one end of the second gear shaft 44 penetrates through the side surface of the second support part to form a handle 45. In the embodiment, the second gear 43 is disposed between two legs, two ends of the second gear shaft 44 are mounted in two opposite side walls of the elongated slot through bearings (not shown), the second gear 43 rotates around the second gear shaft 44 relative to the two legs, specifically, one end of the second gear shaft 44 near the first leg 111 penetrates through the first leg 111 and is formed with a handle 45,

the second gear 43 also has second gear teeth 46 that are in meshing engagement with the first gear 42. It is prior art in the art that the gears have gear shafts, which are not described in detail herein. The way that the two ends of the second gear shaft 44 are mounted in the two opposite side walls of the elongated slot through bearings (not shown) to realize the self-rotation of the gear shaft is prior art in the field, and will not be described herein. It is prior art in the art to have a gear with teeth arranged in a circumferentially uniform arrangement. During operating condition, through rocking handle 45, drive second gear 43 and rotate, and then drive the teeth of a cogwheel 42 through the second teeth of a cogwheel 46 on the second gear 43 and rotate, connect branch 20 and carry out the position control of vertical direction under the drive of first gear 40, this regulative mode can realize simply easily operating through the manual handle 45 of stirring of people.

The elongated slot is further provided with a braking mechanism for braking the second gear 43, the braking mechanism comprises a connecting rod 50, a torsion spring 51 and a claw body 52, the connecting rod 50 is fixedly installed in the inner side wall of the elongated slot, one end of the claw body 52 is movably installed on the connecting rod 50, the claw body 52 can rotate around the connecting rod 50, the other end of the claw body is provided with a downward bending tip end which can be clamped in a tooth groove of the second gear 43, one end of the torsion spring 51 is connected to the connecting rod 50, the other end of the torsion spring is respectively arranged on the claw body 52, and under the action of the torsion spring 51, the downward bending tip end of the claw body 52 is clamped in the tooth groove of the second gear 43 to stop the.

Specifically, in the present embodiment, the braking mechanism is disposed between the two legs, and under the action of the torsion spring 51, the other end of the pawl 52 is engaged in the tooth slot of the second gear 43, which is the second gear tooth 46 in the present embodiment. The mounting of the pawl 52 to an external support means such as the link 50 by the torsion spring 51 is well known in the art and will not be described further herein. In the working state, the other end of the claw body 52 is lifted up by a hand or an external pulling object to separate the claw body 52 from the tooth groove of the second gear 43, when the second gear 46 rotates to the pre-adjustment position, the lifted claw body 52 is released, the downward bent tip of the claw body 52 is clamped in the pre-adjusted position on the second gear tooth 46 under the action of the torsion spring 51, the second gear 43 is firmly fixed, and the connecting support rod 20 is firmly fixed. The fixing of the connecting strut 20 is achieved by means of a detent mechanism.

The connecting strut 20 in this embodiment is a cylindrical connecting rod.

First supporting part 10 top is passed through axis of rotation 12 and is linked to each other with 11 one end of second supporting part, and second supporting part 11 rotates in the horizontal direction through axis of rotation 12 for first supporting part 10, and rotation through first supporting part 11 drives connecting branch 20 and adjusts simple structure easily on the horizontal direction. The second support part 11 is also provided with a compass 13. It is known in the art to provide a rotating shaft as a connecting member between two members to achieve relative rotation of the two members, and will not be described herein. The compass and the manner of fixing the compass to the external support are well known in the art and will not be described herein. The provision of a compass facilitates the operator to observe the specific adjustment position of the connecting strut 20 for more accurate measurement and more accurate adjustment.

A tripod 14 is also provided on the first support 10. The fixing of the support by means of the tripod 14 is prior art in the field and will not be described in detail here. The tripod 14 provides stability in the fixing of the device and is convenient to carry and move.

A supporting wire frame 30 applied to a tunnel transient electromagnetic semi-automatic scanning type detection device is a rectangular frame 31 with each side being adjustable, four inner corners of the rectangular frame 31 are fixedly connected with four end portions of a cross adjustable supporting frame, each side of the rectangular frame 31 comprises a connecting sleeve 32 located in the middle, two ends of the connecting sleeve 32 are respectively provided with a first supporting rod 311 capable of penetrating into the connecting sleeve, the connecting sleeve 32 is provided with a screw hole (not shown), and a screw 33 is screwed into the connecting sleeve and used for fastening the first supporting rod 311; the connection sleeve 32 is also provided with a terminal connector 36 which can be used to connect the coil fixed to the wire frame to an external connection wire. It is prior art in the art to arrange the wire connections on the support wire frame and will not be described in detail here.

The cross adjustable support frame comprises a cross sleeve 34, wherein two ends of the cross sleeve 34 are respectively provided with a second support rod 312 which can be inserted into the cross sleeve, the cross sleeve 34 is provided with a screw hole (not shown), and a screw 33 is screwed into the screw hole and used for fastening the second support rod 312;

the cross-shaped sleeve 34 is fixedly mounted centrally on the end of the connecting strut 20.

The connecting sleeve 32 is also provided with a U-shaped fixing catch 37. The bottom end of the U-shaped fixing buckle 37 is fixed on the connecting sleeve 32, the fixing mode can be welded or integrally formed during processing and manufacturing, for the prior art in the field, when in use, the transmitting coil or the transmitting coil and the receiving coil are fixed in the U-shaped fixing buckle 37, the coil is firmly fixed, and the fixing of the external annular coil through the U-shaped fixing buckle 37 is the prior art in the field, and is not described herein again.

In this embodiment, a through hole 35 is formed in the center of the cross-shaped sleeve 34, and the other end of the connecting rod 20 is inserted and fixed in the through hole 35. In this embodiment, the end surface of the other end of the connecting strut 20 slightly protrudes from the through hole 35, the connecting strut 20 can be fixed in the through hole 35 by welding or interference fit, and the external connecting member is embedded and fixed in the through hole and the used embedding and fixing manner is the prior art in the field, which is not described herein again.

The utility model provides a support wire frame 30's size is adjustable, conveniently places not unidimensional coil.

It is known in the art to provide a through screw hole (not shown) in the connection sleeve 32 or the cross-shaped sleeve 34, and to screw the screw 33 into the screw hole and press and fix the external connection member embedded in the sleeve 32 or the cross-shaped sleeve 34, and the detailed description thereof is omitted.

The fixing manner adopted for fixing the first support rod 311 in the connecting sleeve 32 and the second support rod 312 in the cross-shaped sleeve 34 is the same in this embodiment.

A probe (not shown) is also disposed in the blind bore 21. The blind hole 21 is a cylindrical groove, in this embodiment, a probe (not shown) is adhered in the blind hole 21, and the fixing manner of the probe (not shown) in the blind hole 21 is the prior art in the field, and is not described herein again.

The utility model discloses in, probe, transmitting coil or the integrative coil of transmission and reception have following arrangement:

in the first arrangement, the transmitting coil is fixed on the supporting wire frame 30, and a probe is arranged in the blind hole 21 and used for receiving a secondary field signal;

the second arrangement is to fix a transmitting coil and a receiving coil on the support wire frame 30, wherein the transmitting coil is used for transmitting a primary field signal, and the receiving coil is used for receiving a secondary field signal;

in the case of the example 2, the following examples are given,

different from the embodiment 1, the probe (not shown) and the transmitting coil or the transmitting coil and the receiving coil in this embodiment are further connected with an external transient electromagnetic instrument (not shown) by wires, so that the transmitting and receiving conditions and the processing of the transmitted and received signals are conveniently controlled by the transient electromagnetic instrument (not shown).

In the case of the example 3, the following examples are given,

referring to fig. 13-14, the first supporting portion 10 is composed of at least two telescopic rods sleeved together, and each two telescopic rods are connected by a screw thread. Specifically, in this embodiment, the first supporting portion 10 includes a first telescopic rod 101 and a second telescopic rod 102, the lower portion of the second telescopic rod 102 is provided with an external thread 103 along the circumferential direction, the upper end portion of the first telescopic rod is provided with a cylindrical groove 105, an internal thread 104 matched with the external thread is provided on the inner wall surface of the groove 105, the depth of the cylindrical groove 105 is smaller than a half of the length of the first telescopic rod 101, and the second telescopic rod 102 is screwed in or out in the cylindrical groove 105. The cylindrical groove is formed in the top of the telescopic rod, the cylindrical groove is the prior art in the field, the cylindrical groove is not described herein any more, the height detected by the supporting wire frame can be directly adjusted by screwing the second telescopic rod on the first telescopic rod up and down during use, and the device can be applied to a multipoint array type detection method.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims (10)

1. A tunnel transient electromagnetic semi-automatic scanning type detection device, which is characterized by comprising:

the supporting assembly comprises a first supporting part and a second supporting part, wherein the first supporting part is vertically arranged, the second supporting part is transversely arranged, the first supporting part is vertically arranged on an external fixed object, one end of the second supporting part is movably connected with the upper end of the first supporting part, and the second supporting part can rotate in the horizontal direction relative to the first supporting part;

the first gear is movably arranged at the other end of the second supporting part and can rotate in the vertical direction relative to the second supporting part;

one end of the connecting support rod is fixedly arranged on the first gear and can rotate in the vertical direction along with the first gear;

and the supporting wire frame is fixedly arranged at the other end of the connecting support rod and can rotate along the vertical direction of the connecting support rod, and the supporting wire frame is used for fixedly arranging the transmitting coil or/and the receiving coil.

2. The tunnel transient electromagnetic semi-automatic scanning type detection device as claimed in claim 1, wherein a long groove is formed in the center of the end of the second support part connected with the first gear, and the first gear is mounted in the long groove through a first gear shaft; two ends of the first gear shaft are arranged in two opposite side walls of the strip groove through bearings, one end of the first gear shaft penetrates through the side face of the second supporting part, and a 360-degree protractor is fixedly arranged on the penetrated wheel shaft.

3. The apparatus according to claim 2, wherein the first gear has a discontinuous gear tooth facing the outside of the elongated slot, one end of the connecting rod is fixedly connected to the discontinuous position of the first gear, a blind hole is formed at the other end of the connecting rod, a probe is fixedly arranged in the blind hole, and the connecting rod is a cylindrical connecting rod.

4. The apparatus according to claim 2, wherein a second gear engaged with the first gear is further disposed in the elongated slot, the second gear is mounted on two opposite side walls of the elongated slot via a second gear shaft, and one end of the second gear shaft penetrates through a side surface of the second support portion to form a handle.

5. The apparatus according to claim 2, wherein a braking mechanism for braking the second gear is further disposed in the elongated slot, the braking mechanism includes a connecting rod, a torsion spring and a pawl body, the connecting rod is fixedly mounted in an inner side wall of the elongated slot, one end of the pawl body is movably mounted on the connecting rod, the pawl body can rotate around the connecting rod, the other end of the pawl body is provided with a downward-bending tip capable of being clamped in a tooth socket of the second gear, one end of the torsion spring is connected to the connecting rod, the other end of the torsion spring is respectively arranged on the pawl body, and under the action of the torsion spring, the downward-bending tip of the pawl body is clamped in the tooth socket of the second gear to stop the rotation of the second gear.

6. The apparatus according to claim 1, wherein the top of the first support is connected to one end of a second support via a rotation shaft, the second support is rotated in a horizontal direction relative to the first support via the rotation shaft, and a compass is further provided on the second support.

7. The apparatus according to claim 1, wherein a tripod is further provided on the first support.

8. The device for detecting the transient electromagnetic semi-automatic scanning of the tunnel according to claim 1, wherein the support wire frame is a rectangular frame with each side being adjustable, four inner corners of the rectangular frame are fixedly connected with four end portions of the cross-shaped adjustable support frame, each side of the rectangular frame comprises a connecting sleeve located in the middle, two ends of the connecting sleeve are respectively provided with a first support rod capable of penetrating into the connecting sleeve, the connecting sleeve is provided with a screw hole, and a screw is screwed into the connecting sleeve for fastening the first support rod; the connecting sleeve is also provided with a lead connector;

the cross adjustable support frame comprises a cross sleeve, two ends of the cross sleeve are respectively provided with a second support rod capable of penetrating into the cross sleeve, the cross sleeve is provided with a screw hole, and a screw is screwed into the cross sleeve and used for fastening the second support rod;

the center of the cross-shaped sleeve is fixedly arranged at the end part of the connecting support rod.

9. The apparatus according to claim 8, wherein the connecting sleeve is further provided with a U-shaped fixing buckle.

10. The apparatus according to claim 7, wherein the first supporting portion comprises at least two telescopic rods sleeved together, and each two telescopic rods are connected by a screw thread.

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