CN212931354U

CN212931354U - Hand-held type ultrasonic thickness gauge

Info

Publication number: CN212931354U
Application number: CN202022095583.4U
Authority: CN
Inventors: 宋增坚; 许谦
Original assignee: Shanghai Hyatt Construction Consulting And Supervision Co ltd
Current assignee: Shanghai Hyatt Construction Consulting And Supervision Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-04-09
Anticipated expiration: 2030-09-22

Abstract

The utility model relates to a hand-held type ultrasonic thickness gauge, the design and measurement instrument field, it includes the thickness gauge body, be connected with the probe on the thickness gauge body, be provided with on the probe and compress tightly the subassembly, it includes the bracing piece to compress tightly the subassembly, the guide board, the compression bar, the vertical setting of bracing piece, the bracing piece includes fixed pipe, the carriage release lever, the vertical sliding connection of carriage release lever is in fixed pipe, fixed pipe box is established outside the carriage release lever, the guide board is provided with two, two guide boards are fixed connection respectively and keep away from each other one end in carriage release lever and fixed pipe, guide board level sets up, compression bar horizontal sliding connection is in the guide board, the compression bar includes the outer tube, interior pole vertical sliding connection is in the. The method and the device have the effect of ensuring the measurement precision.

Description

Hand-held type ultrasonic thickness gauge

Technical Field

The application relates to the field of measuring instruments, in particular to a handheld ultrasonic thickness gauge.

Background

The ultrasonic thickness gauge is used for measuring the thickness according to the ultrasonic pulse reflection principle, when an ultrasonic pulse transmitted by a probe reaches a material interface through a measured object, the pulse is reflected back to the probe, and the thickness of the measured material is determined by accurately measuring the propagation time of the ultrasonic wave in the material.

Hand-held type ultrasonic thickness gauge includes measuring apparatu body and measuring probe, and measuring probe passes through electric wire and this body coupling of measuring apparatu, when measuring, paints the couplant on the object surface that awaits measuring, then handheld measuring probe handheld measuring apparatu body with the object that awaits measuring, supports measuring probe and the object that awaits measuring tightly, and the reading is accomplished to the measuring apparatu body.

For the above related technologies, the inventor thinks that when the handheld measurement probe is abutted against an object to be measured, the measurement probe may not be kept abutted against the object to be measured due to human factors such as hand shake, and measurement accuracy is affected.

SUMMERY OF THE UTILITY MODEL

In order to guarantee measurement accuracy, this application provides a hand-held type ultrasonic thickness gauge.

The application provides a hand-held type ultrasonic thickness gauge adopts following technical scheme:

the utility model provides a hand-held type ultrasonic thickness gauge, including the thickness gauge body, be connected with the probe on the thickness gauge body, be provided with on the probe and compress tightly the subassembly, it includes the bracing piece to compress tightly the subassembly, the guide board, compress tightly the pole, the vertical setting of bracing piece, the bracing piece includes fixed pipe, the carriage release lever, the vertical sliding connection of carriage release lever is in fixed pipe, fixed pipe box is established outside the carriage release lever, the guide board is provided with two, two guide boards respectively fixed connection in carriage release lever and fixed pipe keep away from each other's one end, guide board level sets up, compress tightly pole horizontal sliding connection in the guide board, the compress tightly pole includes the outer tube, interior pole vertical sliding connection is.

By adopting the technical scheme, when the thickness of objects such as a room wall and the like is measured, the support rod is placed at a proper position, the moving rod is operated to move upwards in the fixed pipe, so that the guide plate fixed on the moving rod is abutted against the roof tightly, the stability of the guide plate is ensured, the guide plate rises to drive the inner rod to move upwards, the probe is connected with the guide plate, the probe is moved to a proper position on the guide plate according to the position to be measured, the couplant is smeared at the position to be measured, the pressing rod is operated to move on the guide plate towards the direction close to the wall surface until the probe is abutted against the wall surface tightly, the abutting of the probe against the wall surface is realized, the abutting state of the probe and the; in addition, the worker does not need to hold the probe, and the worker can conveniently operate the thickness gauge body to read, record data and the like.

Optionally, a sliding block is arranged on the probe, the sliding block is vertically connected to the pressing rod in a sliding manner, the sliding block comprises a first transverse block, a second transverse block, a third transverse block, a first connecting block and a second connecting block, and the first transverse block, the second transverse block and the third transverse block are parallel to the pressing rod and are sequentially arranged along the direction away from the supporting rod; the first connecting block is fixedly connected between the first transverse block and the second transverse block, and is positioned in the middle of the first transverse block and the second transverse block along the direction which is horizontal and vertical to the moving direction of the pressing rod; the second connecting block is fixedly connected between the second transverse block and the third transverse block and is positioned in the middle of the second transverse block and the third transverse block along the direction which is horizontal and vertical to the moving direction of the pressing rod; one side of the outer tube far away from the supporting rod is provided with a first through groove, the first through groove runs through the tube wall of the outer tube, the first connecting block is located in the first through groove, the first through groove is matched with the first connecting block, the first transverse block is close to one side of the first connecting block and abutted against the outer wall of the outer tube, the second transverse block is close to one side of the first connecting block and abutted against the inner wall of the outer tube, the inner rod is far away from one side of the supporting rod and provided with a clamping groove, the second transverse block is clamped in the clamping groove, the second transverse block is far away from one side of the first connecting block and abutted against the bottom wall of the clamping groove, the inner rod is provided with a containing groove, the third transverse block is located in the containing groove, the inner rod is provided with a second through groove, the second through groove.

By adopting the technical scheme, the sliding block slides on the pressing rod to drive the probe to move to a proper position, when the sliding block is positioned on the outer pipe part, the first transverse block and the second transverse block are matched, the first connecting block is matched with the first through groove, the connection stability of the sliding block and the outer pipe is ensured, the first transverse block and the second transverse block the sliding block from being inclined, the sliding block is ensured to be in a horizontal state, and therefore the probe is ensured to be in the horizontal state, and the normal measurement is ensured; when the sliding block is positioned at the part of the inner rod, the second transverse block, the third transverse block, the accommodating groove and the second through groove are matched to ensure the connection stability of the sliding block and the inner rod, the second transverse block and the third transverse block the sliding block from being inclined, and the sliding block can be ensured to be in a horizontal state, so that the probe is ensured to be in the horizontal state, and the normal measurement is ensured; when the sliding block is positioned at the overlapped part of the inner rod and the outer pipe, the sliding block is matched with the first through groove, the clamping groove, the second through groove and the accommodating groove, and the stability of the sliding block is guaranteed.

Optionally, a fixing bolt is connected to the first cross block through a thread, and the fixing bolt abuts against the pressing rod.

Through adopting above-mentioned technical scheme, before measuring, the bolt does not support tightly with the compression bar, when measuring, is connected probe and slider, and the operation slider moves on the compression bar, and the slider drives the probe and removes, treats to remove suitable position after, rotates fixing bolt for fixing bolt supports tightly with the compression bar, fixes between with slider and the compression bar finger, guarantees the stability of the state that the slider is located, thereby guarantees the stability of probe position, guarantees that measurement work goes on smoothly.

Optionally, a gear is horizontally and rotatably connected in the fixed pipe, and one side of the movable rod, which is close to the gear, is meshed with the gear.

Through adopting above-mentioned technical scheme, during the measurement, place the bracing piece in behind the suitable position, operation gear rotates, and gear revolve makes in it the meshing movable rod rise, and the movable rod rises to drive the guide board and rises to support tightly for the roof, realizes the quick fixed of guide board, and under the condition of no external force rotating gear, the movable rod can not move down under the action of gravity, guarantees the fixed stability of guide board, is favorable to measuring work to go on smoothly.

Optionally, the guide plate is rotatably connected with a lead screw, the rotating axis of the lead screw is parallel to the sliding direction of the pressing rod, and the pressing rod is connected with the lead screw in a threaded manner.

Through adopting above-mentioned technical scheme, be connected probe and slider, and remove slider to suitable position and carry out fixed back, the drive lead screw rotates, and the lead screw rotates and drives the compression bar, and the compression bar removes and drives slider and probe and remove to probe and wall and support tightly, realizes supporting tightly of probe and wall, and under the auto-lock of lead screw, the compression bar is difficult to remove to the direction of keeping away from the wall, guarantees that the state that probe and wall support tightly keeps stable, is favorable to improving measurement accuracy.

Optionally, a connecting frame is arranged outside the probe, the connecting frame is connected to the sliding block, a connecting rod is connected between the connecting frame and the probe, the probe is connected to the connecting rod in a sliding mode along the length direction of the connecting rod, and the connecting rod is connected to the connecting frame in a sliding mode in the plane where the connecting frame is located and along the length direction of the connecting rod perpendicular to the connecting rod.

Through adopting above-mentioned technical scheme, when measuring, be connected the splice box with the slider, it makes the probe align with the position to be measured to remove the slider, only observe and think whether align through the naked eye during alignment, there is certain error, the compression bar passes through the slider and drives the splice box removal, the splice box drives connecting cylinder and probe and is close to the wall, it nevertheless does not compress tightly to remove to probe and wall contact, then move connecting rod and connecting cylinder according to the position condition of probe and position to be measured, make the probe accurate and the position coincidence of awaiting measuring, then the operation compression bar removes and makes and supports tightly with the wall, guarantee measuring position's accuracy, be favorable to improving measurement accuracy.

Optionally, a connecting cylinder is arranged outside the probe, the connecting cylinder is in a hollow cylinder shape, the axis of the connecting cylinder is parallel to the sliding direction of the compression rod, the probe is inserted into the connecting cylinder, the probe is in threaded connection with the connecting cylinder, and the connecting cylinder is in sliding connection with the connecting rod.

Through adopting above-mentioned technical scheme, when measuring, be connected the link frame with the slider, insert the probe and locate in the connecting cylinder and, the compression bar passes through the slider and drives the connecting cylinder and be close to the wall, the connecting cylinder drives the probe and is close to the wall to the probe and the wall contact is nevertheless not compressed tightly, then according to the position condition removal connecting rod and the connecting cylinder of probe and position to be measured, make the probe accurate with the coincidence of position to be measured, then rotate the probe and make probe and wall support tightly, guarantee measuring position's accuracy, be favorable to improving measurement accuracy.

Optionally, the connecting frame is far away from one side of the sliding block and is fixedly connected with a fixing rod, the fixing rod is far away from one side of the connecting frame and is fixedly connected with a sucker, a connecting bolt is arranged on the connecting frame, and the connecting bolt penetrates through the connecting frame and is connected to the sliding block in a threaded mode.

By adopting the technical scheme, when materials which can be adsorbed by the sucking disc and are arranged outside the wall surface and the like are measured, a practical pressing assembly is not needed, during measurement, a coupling agent is coated on an object to be measured, the connecting frame is fixed on the surface of the object to be measured through the sucking disc, the coupling agent is located in the connecting frame, then the connecting rod and the connecting cylinder are moved to enable the probe to be aligned with a point to be measured, and then the probe is rotated until the probe is tightly abutted against the wall surface; when the indoor wall surface is measured, the connecting bolt penetrates through the connecting frame and is in threaded connection with the sliding block, and the connection between the connecting frame and the sliding block is completed, so that the measurement can be carried out.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the pressing assembly, the probe is tightly abutted against the wall surface, the stability of the abutting state is ensured, and the measurement precision is improved;

2. the connecting rod is arranged and connected with the connecting frame in a sliding mode, and the connecting cylinder is connected with the connecting rod in a sliding mode, so that the probe position is finely adjusted, and the accuracy of the detection point position is guaranteed;

3. through setting up the sucking disc for it is more convenient when measuring the material that can be adsorbed by the sucking disc.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a sectional view showing the connection relationship between the guide plate and the pressing bar in the present embodiment;

FIG. 3 is a partial schematic structural view of the present embodiment;

FIG. 4 is a horizontal sectional view of the present embodiment;

fig. 5 is an enlarged view of a portion a in fig. 4.

Description of reference numerals: 1. a thickness gauge body; 11. a probe; 2. a compression assembly; 21. a support bar; 211. a fixed tube; 2111. a gear; 2112. a drive motor; 212. a travel bar; 22. a guide plate; 221. a guide groove; 23. a hold down bar; 231. an outer tube; 2311. a lead screw; 2312. rotating the motor; 2313. a first through groove; 232. an inner rod; 2321. a card slot; 2322. a second through groove; 2323. a containing groove; 3. a slider; 31. a first cross piece; 311. fixing the bolt; 32. a second transverse block; 33. a third transverse block; 34. a first connection block; 35. a second connecting block; 4. a connecting frame; 41. a connecting rod; 42. a connecting cylinder; 43. a chute; 44. a connecting bolt; 45. fixing the rod; 451. and (4) sucking discs.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses hand-held type ultrasonic thickness gauge. Referring to fig. 1, a hand-held type ultrasonic thickness gauge includes thickness gauge body 1, is connected with probe 11 on the thickness gauge body 1, is provided with on the probe 11 and compresses tightly subassembly 2, compresses tightly subassembly 2 and compresses tightly probe 11 and the wall that awaits measuring, guarantees the stability of probe 11 and wall contact, is favorable to improving measurement accuracy.

Referring to fig. 1 and 2, the pressing assembly 2 includes a support rod 21, a guide plate 22, and a pressing rod 23, the support rod 21 is vertically disposed, the support rod 21 includes a fixed tube 211 and a movable rod 212, the movable rod 212 is vertically slidably connected to the fixed tube 211, the fixed tube 211 is sleeved outside the movable rod 212, two guide plates 22 are disposed, the two guide plates 22 are respectively and fixedly connected to one ends of the movable rod 212 and the fixed tube 211, which are far away from each other, the guide plate 22 is horizontally disposed, the pressing rod 23 is horizontally slidably connected to the guide plate 22, a guide groove 221 is disposed on the guide plate 22, the pressing rod 23 is located in the guide groove 221 and is matched with the guide groove 221, the pressing rod 23 includes an outer tube 231 and an inner rod 232, the inner rod 232 is vertically slidably connected to the outer tube 231, the outer tube 231 is sleeved outside the inner rod 232, the outer tube 231 is in threaded connection with the lead screw 2311, the lead screw is located at a position, close to the bottom, of the outer tube 231, the lead screw 2311 is connected with a rotating motor 2312 for driving the lead screw 2311 to rotate, and the probe 11 is vertically connected to the pressing rod 23 in a sliding mode.

Referring to fig. 4, a gear 2111 is horizontally and rotatably connected in the fixed tube 211, one side of the movable rod 212 close to the gear 2111 is meshed with the gear 2111, a driving motor 2112 for driving the gear 2111 to rotate is connected to the gear 2111, and the driving motor 2112 is started to drive the gear 2111 to rotate, so that the inner rod 232 drives the guide plate 22 to ascend until the guide plate 22 abuts against the roof, and the stable state of the guide plate 22 is ensured.

Refer to fig. 1 and fig. 2, when measuring, place bracing piece 21 in suitable position, start driving motor 2112 and drive gear 2111 and rotate, make interior pole 232 drive guide board 22 and rise to guide board 22 and roof butt, guide board 22 drives interior pole 232 and rises, be connected probe 11 and guide board 22, move probe 11 to suitable position on guide board 22, start rotating motor 2312 and drive the lead screw and rotate, make compressing tightly pole 23 drive probe 11 to removing to probe 11 and wall to tightly near the wall direction, guarantee the stability of probe 11 and wall contact, be favorable to improving measurement accuracy.

Referring to fig. 3 and 4, a connecting cylinder 42 is arranged outside the probe 11, the connecting cylinder 42 is a hollow cylinder, the axis of the connecting cylinder 42 is parallel to the sliding direction of the pressing rod 23, the probe 11 is inserted into the connecting cylinder 42, the probe 11 is in threaded connection with the connecting cylinder 42, a connecting frame 4 is arranged outside the connecting cylinder 42, the connecting cylinder 42 is located in the connecting frame 4, a connecting rod 41 is arranged between the connecting frame 4 and the connecting cylinder 42, the connecting cylinder 42 is slidably connected to the connecting rod 41 along the length direction of the connecting rod 41, the connecting rod 41 penetrates through the cylinder wall of the connecting cylinder 42, the connecting rods 41 are provided with two connecting rods 41, the two connecting rods 41 are symmetrical about the axis of the connecting cylinder 42, the end of the connecting rod 41 far away from the connecting cylinder 42 is slidably connected to the connecting frame 4 along the length direction perpendicular to the connecting rod; when measurement is carried out, the guide plate 22 is inserted into the connecting cylinder 42, the connecting frame 4 is moved on the pressing rod 23 according to the position of a point to be measured, then the pressing rod 23 is driven to be close to the wall surface until the probe 11 is just contacted with the wall surface, then the connecting rod 41 and the connecting cylinder 42 are moved until the probe 11 is aligned with the point to be measured according to the position relation between the measuring point and the probe 11, and the probe 11 is rotated to enable the probe 11 to be abutted against the wall surface, so that the accuracy of the point position measurement is ensured, and the improvement of the measurement accuracy is facilitated.

Referring to fig. 4 and 5, a sliding block 3 is arranged on the connecting frame 4, the sliding block 3 is vertically slidably connected to the pressing rod 23, the sliding block 3 includes a first transverse block 31, a second transverse block 32, a third transverse block 33, a first connecting block 34 and a second connecting block 35, and the first transverse block 31, the second transverse block 32 and the third transverse block 33 are parallel to the pressing rod 23 and are sequentially arranged along a direction away from the supporting rod 21; the first connecting block 34 is fixedly connected between the first transverse block 31 and the second transverse block 32, and the first connecting block 34 is positioned in the middle of the first transverse block 31 and the second transverse block 32 along the horizontal direction and the direction perpendicular to the moving direction of the pressing rod 23; the second connecting block 35 is fixedly connected between the second transverse block 32 and the third transverse block 33, and the second connecting block 35 is located in the middle of the second transverse block 32 and the third transverse block 33 along the direction which is horizontal and vertical to the moving direction of the pressing rod 23; a first through groove 2313 is formed in one side, away from the support rod 21, of the outer tube 231, the first through groove 2313 penetrates through the tube wall of the outer tube 231, the first connecting block 34 is located in the first through groove 2313, the first through groove 2313 is matched with the first connecting block 34, one side, close to the first connecting block 34, of the first cross block 31 is abutted to the outer wall of the outer tube 231, one side, close to the first connecting block 34, of the second cross block 32 is abutted to the inner wall of the outer tube 231, a clamping groove 2321 is formed in one side, away from the support rod 21, of the inner rod 232, the second cross block 32 is clamped in the clamping groove 2321, one side, away from the first connecting block 34, of the second cross block 32 is abutted to the bottom wall of the clamping groove 2321, an accommodating groove 2323 is formed in the inner rod 232, the third cross block 33 is located in the accommodating groove 2323, a second through groove 2322 is formed in the inner rod 232, the second through groove 2322 is communicated with the accommodating groove 2323 and the clamping groove 2321, the second, the fixing bolt 311 is tightly abutted to the pressing rod 23; slider 3 moves on outer tube 231 or interior pole 232, drives the carriage 4 and moves on outer tube 231 or interior pole 232, and slider 3 and outer tube 231 and interior pole 232 cooperation guarantee the stability of 3 slip processes of slider to guarantee the stability of 4 slip processes of carriage, be favorable to the measuring process to normally go on.

Referring to fig. 3, a fixing rod 45 is fixedly connected to one side of the connecting frame 4, which is far from the slider 3, a suction cup 451 is fixedly connected to one side of the fixing rod 45, which is far from the connecting frame 4, a connecting bolt 44 is arranged on the connecting frame 4, and the connecting bolt 44 penetrates through the connecting frame 4 and is in threaded connection with the slider 3; before use, the connecting frame 4 and the sliding block 3 are in a separated state, and when the measuring device is used, the connecting bolt 44 penetrates through the connecting frame 4 and is connected to the sliding block 3 in a threaded mode, and then measurement can be conducted; when the object to be measured can be adsorbed by the suction cup 451, the pressing assembly 2 is not needed, the connecting frame 4 is directly adsorbed on the surface of the object to be measured through the suction cup 451, then the connecting rod 41 and the connecting cylinder 42 are moved to enable the probe 11 to be aligned with the point to be measured, and the probe 11 is rotated to be tightly abutted against the object to be measured, so that the measuring process is more convenient.

The implementation principle of the handheld ultrasonic thickness gauge of the embodiment of the application is as follows: before use, the connecting frame 4 and the sliding block 3 are in a separated state, when a measured object can be adsorbed by the sucker 451, the connecting frame 4 is adsorbed on the surface of the object to be measured through the sucker 451, the connecting rod 41 and the connecting cylinder 42 are moved to enable the probe 11 to be aligned with the point to be measured according to the position relation between the probe 11 and the point to be measured, the probe 11 is rotated to be abutted against the object to be measured, the contact stability of the probe 11 and the wall surface is ensured, and the measurement precision is improved; when objects which cannot be adsorbed by the suction cups 451, such as indoor wall surfaces, need to be measured, the connecting bolts 44 penetrate through the connecting frame 4 and are connected to the sliding block 3 in a threaded mode, the supporting rods 21 are moved to proper positions, the driving motor 2112 is started to enable the guide plate 22 to be tightly abutted to a roof, the rotating motor 2312 is started to enable the pressing rod 23 to move towards the direction close to the wall surface until the suction cups 451 are abutted to the wall surface, according to the position relation between the probe 11 and a point to be measured, the connecting rod 41 and the connecting cylinder 42 are moved to enable the probe 11 to be aligned to the point to be measured, the probe 11 is rotated to be tightly abutted to the object to.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a hand-held type ultrasonic thickness gauge, includes thickness gauge body (1), is connected with probe (11), its characterized in that on thickness gauge body (1): the probe (11) is provided with a pressing component (2), the pressing component (2) comprises a supporting rod (21), a guide plate (22) and a pressing rod (23), the supporting rod (21) is vertically arranged, the supporting rod (21) comprises a fixed pipe (211), the utility model provides a probe, including carriage release lever (212), carriage release lever (212) vertical sliding connection is in fixed pipe (211), fixed pipe (211) cover is established outside carriage release lever (212), guide board (22) are provided with two, two guide board (22) are fixed connection respectively and keep away from each other one end in carriage release lever (212) and fixed pipe (211), guide board (22) level sets up, compress tightly pole (23) horizontal sliding connection in guide board (22), compress tightly pole (23) and include outer tube (231), interior pole (232) vertical sliding connection in outer tube (231), outer tube (231) cover is established outside interior pole (232), the vertical sliding connection in compression pole (23) of probe (11).

2. The hand-held ultrasonic thickness gauge of claim 1, wherein: the probe (11) is provided with a sliding block (3), the sliding block (3) is vertically connected to the pressing rod (23) in a sliding mode, the sliding block (3) comprises a first transverse block (31), a second transverse block (32), a third transverse block (33), a first connecting block (34) and a second connecting block (35), and the first transverse block (31), the second transverse block (32) and the third transverse block (33) are parallel to the pressing rod (23) and are sequentially arranged along the direction far away from the supporting rod (21); the first connecting block (34) is fixedly connected between the first transverse block (31) and the second transverse block (32), and the first connecting block (34) is positioned in the middle of the first transverse block (31) and the second transverse block (32) along the moving direction which is horizontal and vertical to the pressing rod (23); the second connecting block (35) is fixedly connected between the second transverse block (32) and the third transverse block (33), and the second connecting block (35) is positioned in the middle of the second transverse block (32) and the third transverse block (33) along the horizontal direction which is perpendicular to the moving direction of the pressing rod (23); a first through groove (2313) is formed in one side, far away from the supporting rod (21), of the outer pipe (231), the first through groove (2313) penetrates through the pipe wall of the outer pipe (231), the first connecting block (34) is located in the first through groove (2313), the first through groove (2313) is matched with the first connecting block (34), one side, close to the first connecting block (34), of the first transverse block (31) is abutted to the outer wall of the outer pipe (231), one side, close to the first connecting block (34), of the second transverse block (32) is abutted to the inner wall of the outer pipe (231), a clamping groove (2321) is formed in one side, far away from the supporting rod (21), of the inner rod (232), the second transverse block (32) is clamped in the clamping groove (2321), one side, far away from the first connecting block (34), of the second transverse block (32) is abutted to the bottom wall of the clamping groove (2321), a containing groove (2323) is formed in the inner rod (232), the third transverse block (33) is located in the containing groove, the second through groove (2322) is communicated with the accommodating groove (2323) and the clamping groove (2321), the second connecting block (35) is located in the second through groove (2322), the second connecting block (35) is matched with the second through groove (2322), and the probe (11) is connected to the sliding block (3).

3. The hand-held ultrasonic thickness gauge of claim 2, wherein: the first transverse block (31) is in threaded connection with a fixing bolt (311), and the fixing bolt (311) is tightly abutted to the pressing rod (23).

4. The hand-held ultrasonic thickness gauge of claim 1, wherein: a gear (2111) is horizontally and rotatably connected in the fixed pipe (211), and one side, close to the gear (2111), of the movable rod (212) is meshed with the gear (2111).

5. The hand-held ultrasonic thickness gauge of claim 1, wherein: the guide plate (22) is connected with a lead screw (2311) in a rotating mode, the rotating axis of the lead screw (2311) is parallel to the sliding direction of the pressing rod (23), and the pressing rod (23) is connected to the lead screw (2311) in a threaded mode.

6. The hand-held ultrasonic thickness gauge of claim 2, wherein: the probe (11) is provided with the connection frame (4) outward, and connection frame (4) are connected in slider (3), are connected with connecting rod (41) between connection frame (4) and probe (11), and probe (11) along the length direction sliding connection of connecting rod (41) in connecting rod (41), connecting rod (41) just along perpendicular to connecting rod (41) length direction sliding connection in connection frame (4) place plane.

7. The hand-held ultrasonic thickness gauge of claim 6, wherein: the probe (11) is externally provided with a connecting cylinder (42), the connecting cylinder (42) is hollow cylinder-shaped, the axis of the connecting cylinder (42) is parallel to the sliding direction of the pressing rod (23), the probe (11) is inserted into the connecting cylinder (42), the probe (11) is in threaded connection with the connecting cylinder (42), and the connecting cylinder (42) is in sliding connection with the connecting rod (41).

8. The hand-held ultrasonic thickness gauge of claim 6, wherein: the connecting frame (4) is far away from one side of the sliding block (3) and is fixedly connected with a fixing rod (45), the fixing rod (45) is far away from one side of the connecting frame (4) and is fixedly connected with a sucker (451), a connecting bolt (44) is arranged on the connecting frame (4), and the connecting bolt (44) penetrates through the connecting frame (4) and is connected to the sliding block (3) in a threaded mode.