CN210071749U - Ultrasonic measuring instrument for detecting quality of underground diaphragm wall - Google Patents

Abstract

The utility model relates to an ultrasonic measuring instrument for detecting the quality of an underground continuous wall, which belongs to the technical field of the quality detection of the underground continuous wall and comprises a bracket, a mounting frame is fixedly arranged at the top position of the bracket, a detection component is fixedly arranged on the mounting frame, the detection component comprises a measuring instrument body, an ultrasonic transmitter and an ultrasonic receiver which are connected with the measuring instrument, both the ultrasonic transmitter and the ultrasonic receiver are connected with wires, lifting components are fixedly arranged at both sides of the mounting frame, each lifting component comprises a first connecting rod fixedly connected with the bracket and a second connecting rod fixedly connected with the mounting frame, the second connecting rod is vertically inserted into the first connecting rod from bottom to top and is connected with the first connecting rod in a sliding way, a locking hole is arranged at the bottom position of the first connecting rod, a locking stud is inserted in the locking hole, and the locking stud passes through the locking, the utility model discloses the effect that improves the testing result precision has.

Description

Ultrasonic measuring instrument for detecting quality of underground diaphragm wall

Technical Field

The utility model belongs to the technical field of the technique that underground continuous wall quality detected and specifically relates to an underground continuous wall ultrasonic measuring instrument for quality testing is related to.

Background

The underground continuous wall is a foundation engineering, and adopts a trenching machine on the ground, and under the condition of slurry wall protection, a long and narrow deep groove is excavated along the peripheral axis of the deep excavation engineering, after the groove is cleaned, a steel reinforcement cage is hung in the groove, then underwater concrete is poured by using a conduit method to construct a unit groove section, and the steps are carried out section by section, so that a continuous reinforced concrete wall is constructed underground to be used as a structure for intercepting water, preventing seepage, bearing and retaining water. After the underground continuous wall is formed, the construction quality of the underground continuous wall is often required to be detected.

The existing construction quality detection method of the underground diaphragm wall is a sound wave transmission method, and the concrete method is as follows: the method comprises the steps that acoustic pipes are pre-buried in an underground continuous wall, clear water is injected into the acoustic pipes, then an ultrasonic transmitter and an ultrasonic receiver are placed into the two acoustic pipes respectively, the ultrasonic transmitter excites high-frequency elastic pulse waves in concrete, and the fluctuation characteristics of the pulse waves in the concrete transmission process are recorded through a high-precision receiving system. When a discontinuous or damaged interface exists in the concrete, the defect surface forms a wave impedance cross section, and when the wave reaches the interface, the transmission and reflection of the wave are generated, so that the energy of the received transmitted wave is obviously reduced; when serious defects such as looseness, honeycombs, holes and the like exist in concrete, wave scattering and diffraction are generated, the compactness parameters of the concrete in a measuring area range can be obtained according to the arrival time of waves and the characteristics such as the energy attenuation characteristic, the frequency change, the waveform deformation degree and the like of the waves, the ultrasonic dynamic characteristics on different sides and different heights of the technology can be obtained, and the position and the degree of the defects existing in the concrete in the measuring area can be judged through processing and analysis.

But when detecting, it is inside to put into the sounding pipe with ultrasonic transmitter and ultrasonic receiver through artifical manual, and can't guarantee during manual placing that ultrasonic transmitter and ultrasonic receiver can get into in the sounding pipe in step for the testing result precision is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a thereby through put into the interior ultrasonic wave measuring apparatu that improves the underground continuous wall quality testing of testing result precision with ultrasonic transmitter and ultrasonic receiver in step.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an underground continuous wall is ultrasonic measuring instrument for quality testing, which comprises a bracket, the fixed mounting bracket that is provided with in top position department of support, the fixed detection subassembly that is provided with on the mounting bracket, detection subassembly includes the measuring apparatu body and ultrasonic transmitter and the ultrasonic receiver be connected with the measuring apparatu, ultrasonic transmitter and ultrasonic receiver all are connected with the wire, the fixed lifting unit that is provided with in both sides of mounting bracket, lifting unit include with support fixed connection's first connecting rod and with mounting bracket fixed connection's second connecting rod, the second connecting rod from up vertical insert in the first connecting rod and with first connecting rod sliding connection down, the locking hole has been seted up to the bottom position department of first connecting rod, the locking hole internal thread is inserted and is equipped with the locking double-screw bolt, the locking double-screw bolt passes the surface.

By adopting the technical scheme, when the construction quality of the underground diaphragm wall is detected, firstly, the support is moved to the position right above the sound measuring pipe, then the wire of the ultrasonic transmitter and the wire of the ultrasonic receiver are vertically arranged and are right opposite to two adjacent sound measuring pipes, an operator pulls the mounting frame downwards, the mounting frame moves downwards, so that the second connecting rod is driven to slide in the first connecting rod, the ultrasonic transmitter and the ultrasonic receiver are driven to synchronously and vertically enter the two adjacent sound measuring pipes, after the ultrasonic transmitter and the ultrasonic receiver enter the sound measuring pipes, the locking stud is screwed down, the locking stud is abutted against the surface of the second connecting rod, so that the first connecting rod and the second connecting rod are stably and relatively fixed, compared with the prior art that the ultrasonic transmitter and the ultrasonic receiver are directly and manually put into the sound measuring pipes, the asynchronous factor of the artificial entering that leads to can be avoided through the setting of lifting unit to the accuracy nature of data when can improving the detection.

The utility model discloses further set up to: the top position department of support is provided with the roll adjustment subassembly, and the roll adjustment subassembly includes roll adjustment sleeve and roll adjustment screw rod, and the roll adjustment screw rod is provided with two, and two roll adjustment screw rods divide locate roll adjustment sleeve's both ends and with roll adjustment sleeve threaded connection, and the screw thread of two roll adjustment screw rods revolves to opposite, and the top of first connecting rod rotates with the roll adjustment sleeve to be connected and axis of rotation and the axis coincidence of roll adjustment sleeve.

Through adopting above-mentioned technical scheme, through rotating the roll adjustment sleeve, can drive two roll adjustment screw rods and be close to each other or keep away from each other to adjust the size of support, in order to be applicable to different construction scenes. Especially, in a narrow area, the distance adjusting sleeve can be rotated to drive the two distance adjusting screw rods to be close to each other, the overall size of the support is reduced, the support can be stably placed in the narrow space, and the application range of the ultrasonic measuring instrument is expanded.

The utility model discloses further set up to: the surface of the distance adjusting sleeve is provided with a rotating groove, a rotating ring in running fit with the rotating groove is sleeved in the rotating groove, and the top end of the first connecting rod is fixedly connected with the rotating ring.

Through adopting above-mentioned technical scheme, when rotating the roll adjustment sleeve, the swivel becket can rotate at the relative roll adjustment sleeve of rotation inslot portion, on the one hand the roll adjustment sleeve can not drive first connecting rod and mounting bracket when rotating and rotate, thereby make ultrasonic transmitter, ultrasonic receiver and display screen can remain stable state, indirectly improve quality detection efficiency and detection precision, on the other hand rotates the cover and can be restricted at the swivel becket, make to rotate the cover and can not be on the roll adjustment sleeve relative slip, stability when further having improved the detection.

The utility model discloses further set up to: the bottom of support rotates and is provided with the removal wheel, and the axis of rotation of removing the wheel is perpendicular with the axis of rotation of roll adjustment sleeve.

Through adopting above-mentioned technical scheme, when rotating the roll adjustment sleeve, the roll adjustment sleeve drives two roll adjustment screw rods and is close to each other or keep away from to drive the support size and enlarge or reduce, correspondingly, remove the wheel and can remove at the top surface of underground continuous wall, with smooth and easy nature when improving support size adjustment, reduce the adjustment resistance.

The utility model discloses further set up to: the both sides of mounting bracket are rotated and are provided with the guide wheel, and the axis of rotation of guide wheel is perpendicular with the axis of rotation of roll adjustment sleeve, and supersonic generator and ultrasonic receiver's wire is vertical downwards after establishing respectively from the circumferential surface of the guide wheel that corresponds.

Through adopting above-mentioned technical scheme, supersonic generator's wire and ultrasonic receiver's wire are vertical down after bypassing the guide wheel, and the guide wheel can play the guide effect for the wire can keep vertical state, can not take place winding, interference between wire and the mounting bracket, consequently when pushing down the mounting bracket, supersonic generator and the ultrasonic receiver who link to each other with the wire can stably get into in the sounding pipe in step.

The utility model discloses further set up to: the bottom threaded connection of mounting bracket both sides has the lead screw, and the lead screw is parallel with the roll adjustment sleeve, and the lead screw that is located the mounting bracket both sides deviates from the one end at mounting bracket center and rotates and be connected with the dwang, and the dwang deviates from the one end of lead screw and rotates with the guide wheel and be connected.

Through adopting above-mentioned technical scheme, when the distance between the adjacent sounding pipe is different, can rotate the lead screw, the lead screw drives the guide wheel and removes towards the position that is close to the mounting bracket center or deviates from the mounting bracket center, and then can adjust the distance between two guide wheels, consequently can adjust the distance between two guide wheels according to the distance between two adjacent sounding pipes, ensure that ultrasonic transmitter and ultrasonic receiver can get into in the sounding pipe smoothly, improve measuring convenience.

The utility model discloses further set up to: and a pair of handles is fixedly arranged at the middle position of the distance adjusting sleeve.

Through adopting above-mentioned technical scheme, set up a pair of handle in roll adjustment sleeve's intermediate position department, consequently when rotating roll adjustment sleeve in order to adjust the support size, can hold the handle for roll adjustment sleeve's rotation is more convenient.

The utility model discloses further set up to: the inside of first connecting rod is fixed and is provided with vertical spring, the bottom of spring and the top fixed connection of second connecting rod.

Through adopting above-mentioned technical scheme, the setting up of spring makes the second connecting rod can be held in order to ensure to be located first connecting rod all the time by elastic force, improves the connection reliability of first connecting rod and second connecting rod, after the simultaneous measurement ends, unscrews the locking double-screw bolt, and the second connecting rod can return fast and slide to inside the first connecting rod to can drive ultrasonic transmitter and ultrasonic receiver and withdraw fast, improve the efficiency of the aftertreatment work after detecting the end.

To sum up, the utility model discloses a beneficial technological effect does:

1. the lifting assembly is arranged on the support, so that the ultrasonic transmitter and the ultrasonic receiver can be synchronously lifted and lowered into the acoustic pipe, and the detection precision is improved;

2. the horizontal lead screw is arranged at the bottom of the mounting rack in a threaded manner, so that the distance between the two guide wheels can be adjusted, and the ultrasonic testing device is suitable for sending the ultrasonic transmitter and the ultrasonic receiver into two sounding pipes with different distances;

3. through setting up roll adjustment sleeve and with roll adjustment sleeve threaded connection, with two roll adjustment screw rods that the support rotates to be connected for the size of support can be adjusted, in order to be applicable to different construction scenes.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

FIG. 3 is a cross-sectional view of the take-up reel;

FIG. 4 is a schematic view of a partially exploded configuration of the lift assembly;

FIG. 5 is a schematic view of a connection structure between the mounting bracket and the lead screw;

fig. 6 is a partially enlarged schematic view of a portion B in fig. 5.

In the figure, 1, a bracket; 11. a moving wheel; 12. a brake pad; 2. a distance adjusting component; 21. a distance adjusting sleeve; 211. a mounting frame; 2111. a connecting plate; 212. a rotating groove; 213. a handle; 22. adjusting the pitch of the screw rod; 3. a gauge body; 31. a wire; 32. an ultrasonic transmitter; 33. an ultrasonic receiver; 4. a lifting assembly; 41. a first link; 411. a rotating ring; 412. a locking hole; 413. locking the stud; 42. a second link; 421. a spring; 5. a lead screw; 51. a guide wheel; 511. a guide groove; 52. rotating the rod; 6. a continuous wall body; 61. a sound detection tube; 7. a winding frame; 71. a winding wheel; 711. a coiling groove; 712. a fixing hole; 72. a rotating shaft; 721. a connecting line; 73. an electric motor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses an underground continuous wall is ultrasonic measuring appearance for quality testing, including placing support 1 directly over continuous wall body 6, the sound survey hole that a plurality of intervals set up is offered downwards to the top of continuous wall body 6 is vertical, and pre-buried sounding pipe 61 has in the sound survey hole, and the clear water has been annotated to inside when experimental in sounding pipe 61. The relatively fixed detecting element that is provided with on support 1, detecting element include measuring apparatu body 3, are connected with ultrasonic transmitter 32 and ultrasonic receiver 33 on the measuring apparatu body 3, and all are connected with wire 31 between ultrasonic transmitter 32 and ultrasonic receiver 33 and the measuring apparatu body 3. When the construction quality is detected, the support 1 is put on the continuous wall body 6, then the ultrasonic generator and the ultrasonic receiver 33 are respectively placed in the adjacent sound measuring tubes 61, ultrasonic waves emitted by the ultrasonic generator penetrate through the interior of the continuous wall body 6 and are received by the ultrasonic receiver 33, and the internal quality of the continuous wall body 6 is analyzed through wave speed signals.

As shown in fig. 1, the top position department of support 1 is provided with roll adjustment subassembly 2, roll adjustment subassembly 2 includes roll adjustment sleeve 21 and roll adjustment screw rod 22, roll adjustment sleeve 21 level sets up and both ends link up, the internal thread has been seted up to inside, roll adjustment screw rod 22 is provided with two, two roll adjustment screw rods 22 are threaded connection respectively in the both ends position department of roll adjustment sleeve 21, and the screw thread of two roll adjustment screw rods 22 revolves to the opposite direction, the tip that roll adjustment screw rod 22 deviates from roll adjustment sleeve 21 is rotated with the top of support 1 and is connected, the fixed a pair of handle 213 that is provided with in the intermediate position department of roll adjustment sleeve 21. When the handle 213 is held and the distance adjusting sleeve 21 is rotated, the distance adjusting sleeve 21 can drive the two distance adjusting screws 22 to approach to each other or separate from each other, so that the size of the bracket 1 is adjusted, and the bracket is suitable for construction quality detection in spaces with different sizes.

As shown in fig. 1, four moving wheels 11 with brake pads 12 are rotatably disposed at four corners of the bottom of the bracket 1, the moving wheels 11 may be fixed-axis moving wheels 11 or universal wheels with non-fixed axes, in this embodiment, it is preferable that the axis of the moving wheel 11 is fixed, the axis of the moving wheel 11 is perpendicular to the pitch adjusting screw 22, the moving wheel 11 is disposed so that the bracket 1 is convenient to move, and the brake pads 12 can be pressed down to fix the position after moving to a proper position.

Combine fig. 1 and fig. 4, annular rotation groove 212 has been seted up on the circumferential surface of roll adjustment sleeve 21 in the both sides position department of handle 213, it has the swivel 411 of looks adaptation to rotate the inslot 212 internal rotation, the fixed lifting unit 4 that is provided with in bottom position department of swivel 411, lifting unit 4 includes first connecting rod 41 and second connecting rod 42, the top and swivel 411 fixed connection of first connecting rod 41, inside cavity and the second connecting rod 42 of first connecting rod 41 inserted first connecting rod 41 from down inside up, make first connecting rod 41 and second connecting rod 42 sliding fit, locking hole 412 has been seted up in the bottom position department of first connecting rod 41, locking hole 412 internal thread is inserted and is equipped with locking double-screw bolt 413, the bottom fixed connection of second connecting rod 42 has mounting bracket 211, measuring apparatu body 3 is fixed to be placed in mounting bracket 211 upper surface. Through the position of upper and lower adjustment second connecting rod 42 in first connecting rod 41 to screw up locking double-screw bolt 413 and make locking double-screw bolt 413 and second connecting rod 42 butt contact in order to with first connecting rod 41 and second connecting rod 42 relatively fixed, can make mounting bracket 211 adjust the height from top to bottom, thereby drive measuring apparatu body 3 and reciprocate, and then drive ultrasonic generator and ultrasonic receiver 33 that are connected through wire 31 with measuring apparatu body 3 and get into sounding pipe 61 and go up and down in sounding pipe 61 in step, in order to improve the detection accuracy.

As shown in fig. 4, a spring 421 is disposed inside the first link 41, a top end of the spring 421 is fixedly connected to an inner top surface of the first link 41, and a bottom end of the spring 421 is fixedly connected to a top end of the second link 42. The setting of spring 421 makes the connection between first connecting rod 41 and the second connecting rod 42 more stable, can not break away from each other, only needs to unscrew lock stud 413 after measuring simultaneously, and the elastic restoring force of spring 421 can wait for the second connecting rod 42 fast inside the first connecting rod 41, and then takes out ultrasonic transmitter 32 and ultrasonic receiver 33 from sounding pipe 61 fast.

Combine fig. 5 and fig. 6, bottom both sides position department of mounting bracket 211 respectively fixedly is provided with a connecting plate 2111, threaded connection has horizontally lead screw 5 on the connecting plate 2111, and two lead screws 5 set up the tip of rotating handle 213 and be close to each other, lead screw 5 deviates from the one end rotation at mounting bracket 211 center and is connected with dwang 52, dwang 52 coincides with lead screw 5, dwang 52 deviates from lead screw 5's one end rotation and is connected with guide wheel 51, the axis of rotation of guide wheel 51 is perpendicular with the axis of rotation of roll adjustment sleeve 21, annular guiding groove 511 has been seted up on the circumferential surface of guide wheel 51, wire 31 is vertical down after walking around in the guiding groove 511. When the distance between the adjacent sounding pipes 61 is different, the screw rod 5 can be rotated, the screw rod 5 drives the guide wheels 51 to horizontally move through the threaded connection with the connecting plate 2111, so that the distance between the two guide wheels 51 can be adjusted, the ultrasonic transmitter 32 and the ultrasonic receiver 33 are suitable for being stably placed into the two sounding pipes 61 with different distances, the measurement precision is guaranteed, and meanwhile, the application range is expanded.

Referring back to fig. 1 and 2, the upper surface of the measuring instrument body 3 is fixedly provided with two groups of winding frames 7, each group of winding frames 7 includes two winding frames 7 which are opposite to each other, a horizontal rotating shaft 72 is rotatably connected between the two winding frames 7 of each group, the rotating shaft 72 is perpendicular to the sleeve 21, a winding wheel 71 is fixedly connected to the rotating shaft 72, a winding groove 711 is formed in the circumferential surface of the winding wheel 71, the lead wire 31 is wound in the winding groove 711, a communicating wire 721 penetrates through the upper surface of the measuring instrument body 3, and the rotating shaft 72 is a copper rotating shaft 72, so that the communicating wire 721 is fixedly connected with the rotating shaft 72.

With reference to fig. 2 and 3, a fixing hole 712 is formed in the winding wheel 71, one end of the fixing hole 712 is communicated with the rotating shaft 72, the other end of the fixing hole 712 is communicated with the winding groove 711, one end of the lead 31 is fixedly connected with the rotating shaft 72, the other end of the lead passes through the fixing hole 712 and then is wound in the winding groove 711, and a motor 73 for driving the winding wheel 71 to rotate is fixedly arranged on one side of the winding frame 7. When detecting the quality of quality diaphragm wall, because wire 31 rolling is in winding groove 711, motor 73 can drive winding wheel 71 and rotate to make wire 31 in winding groove 711 unreel automatically, and the wire in two winding grooves 711 can unreel in automatic synchronization, has further improved measurement accuracy and convenience.

The implementation principle of the embodiment is as follows: when the construction quality of the underground diaphragm wall needs to be detected, firstly, the distance adjusting sleeve 21 is rotated according to the actual site condition, and the distance adjusting sleeve 21 drives the two distance adjusting screw rods 22 to be close to or away from each other so as to increase or decrease the size of the support 1 and be suitable for different site conditions; then moving the bracket 1 to the upper part of the continuous wall body 6 and stepping down the brake block 12; then, two wires 31 are respectively wound around two guide wheels 51 and then vertically downward, then a screw 5 is rotated, the distance between the two guide wheels 51 is adjusted by the screw 5 to ensure that two vertically downward ultrasonic transmitters 32 and ultrasonic receivers 33 can be positioned right above two sounding pipes 61, finally, a locking stud 413 is unscrewed, an installation frame 211 is pulled downward, the installation frame 211 drives the measuring instrument body 3, the ultrasonic transmitters 32 and the ultrasonic receivers 33 to synchronously descend together, so that the ultrasonic transmitters 32 and the ultrasonic receivers 33 synchronously enter the sounding pipes 61, the locking stud 413 is screwed down after reaching a certain depth, sound waves emitted by the ultrasonic transmitters 32 pass through concrete of the continuous wall body 6 and are received by the ultrasonic receivers 33, the construction quality of the continuous wall body 6 is judged by signals such as wave velocity, and meanwhile, the motor 73 can drive a winding wheel 71 to rotate, the lead 31 wound in the winding groove 711 can be synchronously unwound, so that the ultrasonic transmitter 32 and the ultrasonic receiver 33 can synchronously enter the interior of the sounding pipe 61, and the detection precision and convenience are further improved. Compared with the prior art, the utility model discloses in, ultrasonic transmitter 32 and ultrasonic receiver 33 can descend in step and get into sounding pipe 61 to reduce artificial influence that the decline leads to asynchronously, improved measurement accuracy.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides an underground continuous wall quality ultrasonic measuring instrument for measuring, includes support (1), its characterized in that: the top end position of the support (1) is fixedly provided with a mounting frame (211), the mounting frame (211) is fixedly provided with a detection assembly, the detection assembly comprises a measuring instrument body (3), an ultrasonic transmitter (32) and an ultrasonic receiver (33) which are connected with the measuring instrument, both the ultrasonic transmitter (32) and the ultrasonic receiver (33) are connected with a wire (31), two sides of the mounting frame (211) are fixedly provided with lifting assemblies (4), each lifting assembly (4) comprises a first connecting rod (41) fixedly connected with the support (1) and a second connecting rod (42) fixedly connected with the mounting frame (211), the second connecting rod (42) is vertically inserted into the first connecting rod (41) from bottom to top and is slidably connected with the first connecting rod (41), the bottom end position of the first connecting rod (41) is provided with a locking hole (412), and the locking hole (412) is inserted with a locking stud (413), the locking stud (413) passes through the locking hole (412) and abuts against a surface of the second link (42).

2. The ultrasonic measuring instrument for underground continuous wall quality inspection according to claim 1, wherein: the utility model discloses a support, including support (1), the top position department of support (1) is provided with roll adjustment subassembly (2), roll adjustment subassembly (2) are including roll adjustment sleeve (21) and roll adjustment screw rod (22), roll adjustment screw rod (22) are provided with two, two roll adjustment screw rods (22) are divided and are located the both ends of roll adjustment sleeve (21) and with roll adjustment sleeve (21) threaded connection, and the screw thread of two roll adjustment screw rods (22) is revolved to opposite, the top of first connecting rod (41) rotates with roll adjustment sleeve (21) to be connected and the axis coincidence of axis and roll adjustment sleeve (21).

3. The ultrasonic measuring instrument for underground continuous wall quality inspection according to claim 2, wherein: the surface of roll adjustment sleeve (21) has seted up rotation groove (212), rotates groove (212) endotheca and is equipped with and rotates groove (212) normal running circle (411) of running fit, the top and the rotating circle (411) fixed connection of first connecting rod (41).

4. The ultrasonic measuring instrument for underground continuous wall quality inspection according to claim 2, wherein: the bottom end of the support (1) is rotatably provided with a movable wheel (11), and the rotating axis of the movable wheel (11) is perpendicular to the rotating axis of the distance adjusting sleeve (21).

5. The ultrasonic measuring instrument for underground continuous wall quality inspection according to claim 1, wherein: the two sides of the mounting rack (211) are rotatably provided with guide wheels (51), the rotating axes of the guide wheels (51) are perpendicular to the rotating axes of the distance adjusting sleeves (21), and the wires (31) of the ultrasonic generator and the ultrasonic receiver (33) are respectively wound around the circumferential surface of the corresponding guide wheels (51) and then vertically face downwards.

6. The ultrasonic measuring instrument for underground continuous wall quality inspection according to claim 5, wherein: the bottom threaded connection of mounting bracket (211) both sides has lead screw (5), and lead screw (5) are parallel with roll adjustment sleeve (21), and lead screw (5) that are located mounting bracket (211) both sides deviate from mounting bracket (211) center's one end and rotate and be connected with dwang (52), and dwang (52) deviate from the one end of lead screw (5) and rotate with guide wheel (51) and be connected.

7. The ultrasonic measuring instrument for underground continuous wall quality inspection according to claim 2, wherein: a pair of handles (213) is fixedly arranged at the middle position of the distance adjusting sleeve (21).

8. The ultrasonic measuring instrument for underground continuous wall quality inspection according to claim 1, wherein: a vertical spring (421) is fixedly arranged in the first connecting rod (41), and the bottom end of the spring (421) is fixedly connected with the top end of the second connecting rod (42).

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