CN214245865U - Multifunctional ultrasonic detector for pile foundation construction hole pile texture - Google Patents

Abstract

The utility model relates to a detector in multi-functional ultrasonic wave pile foundation construction hole stake matter, it includes the tripod, install the detection case at tripod top, the sleeve of setting in the detection case bottom and install the support on the sleeve, the bottom of support is equipped with a plurality of wall spare of grabbing, be equipped with on the support and be used for the drive to grab the adjusting part that wall spare supported on stake hole pore wall, wear to be equipped with the measuring stick in the sleeve, the roof and the diapire of detection case all are equipped with the lift hole that supplies the measuring stick to pass, be equipped with the drive assembly who is used for driving the measuring stick to go up and down in the detection case, the bottom of measuring stick is equipped with the caliper subassembly that is used for measuring stake hole aperture. This application is through will grabbing the effect that the wall spare tightly supported in the pore wall in stake hole in order to improve the testing process stability.

Description

Multifunctional ultrasonic detector for pile foundation construction hole pile texture

Technical Field

The application relates to the field of pile hole aperture detection, in particular to a multifunctional ultrasonic detector for pile foundation construction hole pile quality.

Background

The building foundation pile is the foundation of building structure, and the stability of building foundation pile depends on foundation pile itself and the stake hole that is used for settling the foundation pile, for guaranteeing the good stability of building foundation pile, in the building engineering, need carry out the detection of diameter to the stake hole of accomplishing to punch.

Chinese patent with publication number CN210922457U discloses a pile hole aperture detection device for building engineering supervision, which comprises a depth measuring rod, a sleeve, a sliding disc, a connecting rod and a bottom plate, wherein the connecting rod is installed on two sides of the top of the sleeve through fixing knobs, a limit bolt is installed on one side of the top of the sleeve, the bottom plate is installed on two sides of the bottom of the sleeve, a sliding block is installed on the top of the bottom plate in a sliding manner, a stop block is fixedly installed at the bottom of the sliding block, a fixing bolt is installed on one side of the top of the sliding block, one side of the top of the sliding block is connected with the connecting rod through a knob, the depth measuring rod penetrates through the inner part of the sleeve, and measuring blocks are fixedly installed on two sides of the bottom of the depth measuring rod; the detection aperture detection device can quickly find the diameter of the pile hole, thereby determining a central point so as to quickly measure the pile hole.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: adopt above-mentioned detection device, because the connecting rod is installed in telescopic both sides, lead to detection device can't keep self stability, and then in the testing process, need artifical supplementary stable detection device, the measured data's that has influenced the degree of accuracy.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that needs artifical supplementary stable detection device in the testing process, this application provides a detector in multi-functional ultrasonic wave pile foundation construction hole stake matter.

The application provides a pair of detector in multi-functional ultrasonic wave pile foundation construction hole stake matter adopts following technical scheme:

the utility model provides a detector in multi-functional ultrasonic wave pile foundation construction hole stake matter, includes the tripod, installs at the detection case at tripod top, sets up the sleeve in the detection case bottom and installs the support on the sleeve, the bottom of support is equipped with a plurality of wall spare of grabbing, be equipped with on the support and be used for the drive to grab the adjusting part that wall spare supported on stake hole pore wall, wear to be equipped with the measuring stick in the sleeve, the roof and the diapire of detection case all are equipped with the lift hole that supplies the measuring stick to pass, be equipped with the drive assembly who is used for driving the measuring stick to go up and down in the detection case, the bottom of measuring stick is equipped with the caliper subassembly that is used for measuring stake hole aperture.

By adopting the technical scheme, the tripod is firstly placed at a proper position, the wall grabbing part is driven by the adjusting assembly to tightly abut against the hole wall of the pile hole, the support can be stably supported on the ground, the driving assembly is used for driving the measuring rod to move downwards, so that the diameter measuring assembly extends into the pile hole to a proper height, and the diameter measuring assembly can be used for detecting the hole diameter of the pile hole; the detector formed by the mechanism can detect without the assistance of personnel to stabilize the detector in the detection process, so that the stability of the detection process and the accuracy of the detection result are improved.

Optionally, the support includes a support frame for being supported on the ground, a connection ring located in the support frame, and a plurality of connection rods arrayed along the circumferential direction of the connection ring, one end of each connection rod is connected with the circumferential wall of the connection ring, the other end of each connection rod is connected with the inner side wall of the support frame, and the connection ring is connected to the sleeve in a threaded sleeve manner.

Through adopting above-mentioned technical scheme, rotate the carriage, can drive the go-between through the connecting rod and rotate, because go-between threaded connection is on the sleeve, can adjust the carriage to suitable height to the carriage props up and establishes on ground, has strengthened the tripod and has propped up the stability of establishing on ground, so that stably detect.

Optionally, the wall grabbing piece comprises an arc abutting plate and a plurality of wall grabbing cones uniformly distributed on the outer arc wall of the arc abutting plate, and the wall grabbing cones are used for being inserted into the hole wall of the pile hole.

By adopting the technical scheme, the arc-shaped abutting plate is driven by the adjusting assembly to slide towards the hole wall direction of the pile hole, and the wall grabbing cone can be inserted on the hole wall of the pile hole until the outer arc wall of the arc-shaped abutting plate abuts against the hole wall of the pile hole, so that the supporting frame can be stably supported on the ground.

Optionally, the adjusting part includes that the cover that slides establishes the regulating block on the connecting rod, sets up the branch in the regulating block bottom, the one end that the regulating block was kept away from to branch links to each other with the inner arc wall of arc offset plate, the lateral wall of regulating block is equipped with the adjustment tank that supplies the connecting rod to pass, be equipped with the setting element in the adjustment tank and fix on the connecting rod.

Through adopting above-mentioned technical scheme, the regulating block that slides drives the arc through branch and supports the board and slide, and then can insert the wall awl of grabbing on the pore wall of establishing in the stake hole, slide the regulating block to suitable position after, utilize the setting element to fix the regulating block on the connecting rod to grab the wall awl and remain stable, and then can stably prop up the carriage and establish on ground.

Optionally, the setting element includes first rack, the second rack with first rack toothing, the telescopic link that links to each other with the second rack and the first spring of cover on the telescopic link is established, first rack sets up the lateral wall at the connecting rod, the cell wall of adjustment tank is equipped with the recess that is used for holding the second rack, the lateral wall of regulating block is equipped with the through-hole that is linked together with the recess, the one end that the second rack was kept away from to the telescopic link passes the through-hole and is connected with the handle, the lateral wall of connecting with the telescopic link of one end of first spring links to each other, the other end of first spring links to each other with the cell wall of recess.

Through adopting above-mentioned technical scheme, personnel stimulate the handle, through the telescopic link, with second rack cunning to the recess in, first spring is compressed this moment, personnel's regulating block that can slide this moment, slide the regulating block to suitable position after, release the handle, utilize the elasticity restoring force of first spring, can slide the second rack to the adjustment tank in by the recess, when the second rack meshes with first rack, can fix the regulating block on the connecting rod, so that will grab the arm awl stability.

Optionally, the driving assembly includes a first fluted disc rotatably connected to the inner bottom wall of the detection box, a second fluted disc meshed with the first fluted disc, and a motor driving the second fluted disc to rotate, the side wall of the measuring rod is provided with threads, and the side wall of the first fluted disc is provided with threaded holes matched with the threads of the measuring rod.

Through adopting above-mentioned technical scheme, starter motor drives the second fluted disc and rotates, drives first fluted disc and rotates, because first fluted disc and measuring rod threaded connection, and then along with the rotation of first fluted disc, has realized the altitude mixture control to the measuring rod to stretch into the different degree of depth in the stake hole with the footpath subassembly and detect.

Optionally, a sliding block is arranged on the hole wall of the lifting hole, and a sliding groove for sliding of the sliding block is formed in the side wall of the measuring rod along the axial direction of the measuring rod.

Through adopting above-mentioned technical scheme, slider and spout and cooperation play direction and limiting displacement to sliding of measuring stick, and then along with the rotation of first fluted disc, can drive the measuring stick and go up and down.

Optionally, the diameter measuring assembly comprises a cross post arranged at the bottom of the measuring rod, telescopic blocks located on two sides of the cross post and a second spring connected with the side wall of the telescopic blocks, telescopic grooves are formed in the cross post, openings are formed in end walls of two sides of the cross post, one end, located on the second spring, of the telescopic blocks penetrates through the openings and slides in the telescopic grooves, support plates are arranged in the telescopic grooves, one ends, far away from the telescopic blocks, of the second springs are connected with the support plates, distance sensors used for detecting the distance between the telescopic blocks and the side walls of the support plates are arranged on the side walls of the support plates, a display screen is arranged on the side wall of the detection box, and the distance sensors are electrically connected with the display screen.

Through adopting above-mentioned technical scheme, utilize the elasticity of second spring, can tightly support flexible piece on the pore wall in stake hole, utilize distance sensor to detect the interval between extension board and the flexible piece simultaneously, convey the interval numerical value that detects to PLC control circuit through distance sensor, interval numerical value is through PLC control circuit's calculation and show through the display screen, makes things convenient for personnel to survey in real time, record and detects numerical value.

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

1. the wall grabbing piece is driven by the adjusting assembly to tightly abut against the wall of the pile hole, so that the support can be stably supported on the ground, the stability of the tripod supported on the ground is enhanced, detection can be performed without a person assisting a stability detector in the detection process, and the accuracy of a detection result is improved;

2. the second rack can slide into the adjusting groove from the groove by utilizing the elastic reset force of the first spring, and the adjusting block can be fixed on the connecting rod until the second rack is meshed with the first rack, so that the grabbing arm cone can be kept stable;

3. along with the rotation of first fluted disc, realized the altitude mixture control to the measuring stick to stretch into the downthehole different degree of depth of stake with the caliper subassembly and detect convenient and practical.

Drawings

Fig. 1 is a front view of a multifunctional ultrasonic detector for detecting pile lining of a hole in pile foundation construction in an embodiment of the application.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Figure 4 is a cross-sectional view embodying a caliper assembly.

Fig. 5 is a cross-sectional view embodying a drive assembly.

Fig. 6 is an enlarged view of a portion B in fig. 5.

Description of reference numerals: 1. a tripod; 2. a detection box; 3. a sleeve; 4. a support; 41. a support frame; 42. a connecting ring; 43. a connecting rod; 5. a wall grasping member; 51. an arc-shaped abutting plate; 52. grabbing a wall cone; 6. an adjustment assembly; 61. an adjusting block; 62. a strut; 63. an adjustment groove; 64. a positioning member; 641. a first rack; 642. a second rack; 643. a telescopic rod; 644. a first spring; 645. a groove; 646. a through hole; 647. a handle; 7. a measuring rod; 8. a lifting hole; 9. a drive assembly; 91. a first fluted disc; 92. a second fluted disc; 93. a motor; 94. a threaded hole; 95. a slider; 96. a chute; 10. a diameter measuring component; 101. a cross post; 102. a telescopic block; 103. a second spring; 104. a telescopic groove; 105. an opening; 106. a support plate; 107. a distance sensor; 108. a display screen.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses detector in multi-functional ultrasonic pile foundation construction hole stake matter. Referring to fig. 1, the detector includes detection case 2, and the bottom of detection case 2 is equipped with tripod 1, and tripod 1 is used for propping up to establish on ground, and tripod 1 plays the supporting role to detection case 2, and the fixed sleeve 3 that is equipped with of bottom center department of detection case 2, the vertical setting of sleeve 3, sleeve 3 are located between tripod 1's the three landing leg, and the measuring stick 7 is worn to be equipped with in the cover slides, and the bottom of measuring stick 7 is equipped with the caliper subassembly 10 that is used for measuring the stake hole aperture.

Referring to fig. 1 and 2, the roof and the diapire of detection case 2 all are equipped with lift hole 8, and two lift holes 8 are passed in proper order and are extended to the top of detection case 2 to the top of measuring stick 7, are equipped with the drive assembly 9 that is used for driving measuring stick 7 and goes up and down in the detection case 2, utilize drive assembly 9 drive measuring stick 7 to go up and down, and then utilize caliper assembly 10 to measure the aperture in stake hole.

Install support 4 on sleeve 3's the lateral wall, when examining, place support 4 on ground, the bottom of support 4 is equipped with a plurality of wall spare 5 of grabbing, is equipped with on support 4 to be used for the drive to grab wall spare 5 and tightly supports the pore wall in stake hole, and then has improved tripod 1's stability to the stable detection in aperture in stake hole has improved measuring result's accuracy.

Referring to fig. 2 and 3, drive assembly 9 includes the first fluted disc 91 of rotation connection diapire in detection case 2, the lateral wall axle center department of first fluted disc 91 is equipped with screw hole 94, measuring stick 7 wears to establish in screw hole 94, be equipped with the screw thread on the lateral wall of measuring stick 7, first fluted disc 91 and measuring stick 7 threaded connection, one side meshing of first fluted disc 91 is connected with second fluted disc 92, second fluted disc 92 is connected with the interior diapire rotation of detection case 2, motor 93 is installed to the inside wall of detection case 2, motor 93 is used for driving second fluted disc 92 and rotates, along with the rotation of second fluted disc 92, drive first fluted disc 91 and rotate, and then drive measuring stick 7 and rotate and go up and down, realized the altitude mixture control to measuring stick 7, so that stretch into the different degree of depth in the stake hole with caliper subassembly 10 and detect.

Referring to fig. 2 and 3, the hole wall of the lifting hole 8 is provided with a slider 95, the side wall of the measuring rod 7 is provided with a sliding groove 96 for the slider 95 to slide along the self axial direction, the slider 95 and the slider 95 are matched to guide and limit the lifting of the measuring rod 7, and the stability of the lifting process of the measuring rod 7 is improved.

Referring to fig. 2, support 4 is including the carriage 41 that is the rectangle setting, be equipped with go-between 42 in the carriage 41, the circumference wall of go-between 42 and be equipped with a plurality of connecting rods 43 along self circumference, the quantity of connecting rods 43 can be 4, the one end that connecting rods 43 kept away from go-between 42 links to each other with the inside wall of carriage 41, the lateral wall of sleeve 3 and be equipped with the screw thread along self axial, the interior rampart of go-between 42 also is equipped with the screw thread, go-between 42 threaded connection is on sleeve 3, and then rotate carriage 41, so that adjust carriage 41 to suitable height, and then can prop up carriage 41 and establish on ground.

Referring to fig. 2 and 4, the diameter measuring assembly 10 includes a cross post 101 connected to the bottom end of the measuring rod 7, the cross post 101 is disposed in a horizontal state, a telescopic slot 104 is disposed inside a side wall of the cross post 101, both side end walls of the cross post 101 are provided with openings 105, so that the telescopic slot 104 is penetrated through both side end walls of the cross post 101, both sides of the cross post 101 are provided with telescopic blocks 102, one end of each telescopic block 102 penetrates through the opening 105 and extends into the telescopic slot 104, a support plate 106 is disposed in the middle of the telescopic slot 104, both side walls of the support plate 106 are provided with second springs 103, the two second springs 103 are in one-to-one correspondence with the two telescopic blocks 102, one end of each second spring 103, which is far away from the support plate 106, is connected to the side wall of the telescopic block 102, and one end of each second spring 103, which is far away from the cross post 101, can be tightly abutted to the hole wall of the pile hole.

Display screen 108 is installed to the lateral wall of detection case 2, the lateral wall of extension board 106 is equipped with distance sensor 107, distance sensor 107 is connected with display screen 108 electricity, distance sensor 107 is used for detecting the interval between extension board 106 and the flexible piece 102 lateral wall, can convey the distance signal who detects to PLC control circuit through distance sensor 107, it is vertical to calculate the interval that reachs between extension board 106 and the flexible piece 102 through PLC control circuit, and show through display screen 108, in order to make things convenient for personnel to survey, the aperture in record stake hole.

Referring to fig. 5, the wall grabbing member 5 includes arc supporting plates 51 corresponding to the connecting rods 43 one by one, a plurality of wall grabbing cones 52 are distributed on outer arc walls of the arc supporting plates 51, and when the wall grabbing cones 52 are inserted into hole walls of pile holes through the wall grabbing member 5 formed by combining the wall grabbing cones 52 and the arc supporting plates 51, the outer arc walls of the arc supporting plates 51 can be attached to the hole walls of the pile holes, so that the stability of supporting the support 4 on the ground is improved.

Referring to fig. 5, adjusting part 6 establishes adjusting block 61 on connecting rod 43 including sliding the cover, adjusting block 61's bottom is equipped with branch 62, branch 62 is the setting of L type, the vertical end of branch 62 links to each other with adjusting block 61's lower surface, the horizontal end of branch 62 links to each other with the inner arc wall of arc buttressing board 51, adjusting block 61's lateral wall is equipped with the adjustment tank 63 that supplies connecting rod 43 to pass, and then sliding adjusting block 61, through branch 62, can adjust arc buttressing board 51 and grabbing wall awl 52 to suitable position, in this embodiment, the lateral wall of connecting rod 43 is last to have the scale mark, so that slide adjusting block 61 to suitable position according to the aperture in stake hole.

Referring to fig. 5 and 6, a positioning member 64 is arranged in the adjusting groove 63 and fixed on the connecting rod 43, and after the adjusting block 61 is slid to a proper position, the adjusting block 61 can be fixed at the proper position by using the positioning member 64, so that the stability of the wall grabbing cone 52 inserted on the wall of the pile hole is improved.

The positioning member 64 includes a first rack 641 and a second rack 642 engaged with each other, the first rack 641 is disposed on a side wall of the connecting rod 43, a length direction of the first rack 641 is the same as an axial direction of the connecting rod 43, a groove 645 is disposed on a groove wall of the adjusting groove 63, the groove 645 is used for accommodating the second rack 642, a through hole 646 communicated with the groove 645 is disposed on a side wall of the adjusting block 61, a telescopic rod 643 is disposed on a side wall of the second rack 642 facing the through hole 646, the telescopic rod 643 passes through the through hole 646 and extends out of the side wall of the adjusting block 61, a handle 647 is connected to an end of the telescopic rod 643 located outside the side wall of the adjusting block 61, and a person can pull the telescopic rod 643 to move in the through hole 646 by the handle 647 so as to push the second rack 642 to approach or separate from the first rack 641.

The telescopic rod 643 is sleeved with a first spring 644, one end of the first spring 644 is connected with a side wall of the telescopic rod 643, the other end of the telescopic rod 643 is connected with a groove wall of the groove 645, when the second rack 642 slides in a direction away from the first rack 641, the first spring 644 is compressed, the adjusting block 61 can slide on the connecting rod 43 to a proper position at the moment, when the handle 647 is released, the telescopic rod 643 is reset by using the elastic resetting force of the first spring 644, the second rack 642 can be stably meshed with the first rack 641 at the moment, and the positioning of the adjusting block 61 on the connecting rod 43 is further realized.

The implementation principle of detector in multi-functional ultrasonic wave pile foundation construction hole stake matter of this application embodiment does: firstly, the supporting frame 41 is rotated to support the supporting frame 41 on the ground, then the handle 647 is pulled to move the second rack 642 into the groove 645, the adjusting block 61 can slide at the moment, the wall grabbing cone 52 is inserted into the hole wall of the pile hole, the outer arc wall of the arc-shaped abutting plate 51 is attached to the hole wall of the pile hole, then the handle 647 is released, the second rack 642 is moved into the adjusting groove 63 from the groove 645 by using the elastic resetting force of the first spring 644, so that the second rack 642 abuts against the first rack 641, and the adjusting block 61 can be fixed on the connecting rod 43 to keep the wall grabbing cone 52 stable, so that the supporting frame 41 can be stably supported on the ground, and the stability of the tripod 1 on the ground is enhanced.

Then starter motor 93, drive second fluted disc 92 and rotate, drive first fluted disc 91 and rotate, because spout 96 and slider 95's cooperation, play direction and limiting displacement to the lift of measuring stick 7, drive measuring stick 7 and move down, so that remove spreader 101 to the inside suitable height of stake hole, utilize the elasticity of second spring 103, can tightly support flexible piece 102 on the pore wall of stake hole, and then utilize distance sensor 107 to detect the interval between flexible piece 102 and the extension board 106 lateral wall, finally pass through display screen 108, can show the numerical value that detects, finally realized detecting the aperture in stake hole.

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 (8)

1. The utility model provides a detector in multi-functional ultrasonic wave pile foundation construction hole stake matter which characterized in that: including tripod (1), install detection case (2) at tripod (1) top, set up sleeve (3) in detection case (2) bottom and install support (4) on sleeve (3), the bottom of support (4) is equipped with a plurality of wall spare (5) of grabbing, be equipped with on support (4) and be used for the drive to grab wall spare (5) and support adjusting part (6) on the stake hole pore wall, wear to be equipped with measuring stick (7) in sleeve (3), the roof and the diapire of detection case (2) all are equipped with lift hole (8) that supply measuring stick (7) to pass, be equipped with in detection case (2) and be used for driving drive assembly (9) that measuring stick (7) go up and down, the bottom of measuring stick (7) is equipped with and is used for measuring caliper assembly (10) in stake hole aperture.

2. The multifunctional ultrasonic detector for the pile quality of the ultrasonic pile foundation construction hole, according to claim 1, is characterized in that: support (4) including being used for propping up establish bracing frame (41) subaerial, be located go-between (42) of bracing frame (41) and along a plurality of connecting rods (43) of go-between (42) circumference array, the one end of connecting rod (43) links to each other with the circumference wall of go-between (42), the other end of connecting rod (43) links to each other with the inside wall of bracing frame (41), go-between (42) thread bush is established and is connected on sleeve (3).

3. The multifunctional ultrasonic detector for detecting the pile quality of the ultrasonic pile foundation construction hole according to claim 2, is characterized in that: the wall grabbing piece (5) comprises an arc-shaped abutting plate (51) and a plurality of wall grabbing cones (52) uniformly distributed on the outer arc wall of the arc-shaped abutting plate (51), and the wall grabbing cones (52) are used for being inserted on the hole wall of the pile hole.

4. The multifunctional ultrasonic detector for the pile quality of the ultrasonic pile foundation construction hole, according to claim 3, is characterized in that: adjusting part (6) establish adjusting block (61) on connecting rod (43), set up branch (62) in adjusting block (61) bottom including sliding the cover, the one end that adjusting block (61) were kept away from in branch (62) links to each other with the inner arc wall of arc butt plate (51), the lateral wall of adjusting block (61) is equipped with adjustment tank (63) that supply connecting rod (43) to pass, it fixes on connecting rod (43) to be equipped with setting element (64) in adjustment tank (63).

5. The multifunctional ultrasonic detector for the pile quality of the ultrasonic pile foundation construction hole, according to claim 4, is characterized in that: the positioning piece (64) comprises a first rack (641), a second rack (642) meshed with the first rack (641), a telescopic rod (643) connected with the second rack (642) and a first spring (644) sleeved on the telescopic rod (643), wherein the first rack (641) is arranged on the side wall of the connecting rod (43), a groove (645) used for accommodating the second rack (642) is formed in the groove wall of the adjusting groove (63), a through hole (646) communicated with the groove (645) is formed in the side wall of the adjusting block (61), one end, far away from the second rack (642), of the telescopic rod (643 penetrates through the through hole (646) and is connected with a handle (647), one end of the first spring (644) is connected with the side wall of the telescopic rod (643), and the other end of the first spring (644) is connected with the groove wall of the groove (645).

6. The multifunctional ultrasonic detector for the pile quality of the ultrasonic pile foundation construction hole, according to claim 1, is characterized in that: drive assembly (9) including rotate connect in detection case (2) interior diapire first fluted disc (91), with second fluted disc (92) of first fluted disc (91) meshing and drive second fluted disc (92) pivoted motor (93), the lateral wall of measuring stick (7) is equipped with the screw thread, the lateral wall of first fluted disc (91) is equipped with screw hole (94) with measuring stick (7) screw-thread fit.

7. The multifunctional ultrasonic detector for the pile quality of the ultrasonic pile foundation construction hole, according to claim 6, is characterized in that: the hole wall of lifting hole (8) is equipped with slider (95), the lateral wall of measuring stick (7) just is equipped with spout (96) that supplies slider (95) to slide along self axial.

8. The multifunctional ultrasonic detector for the pile quality of the ultrasonic pile foundation construction hole, according to claim 1, is characterized in that: the diameter measuring component (10) comprises a transverse column (101) arranged at the bottom of the measuring rod (7), telescopic blocks (102) positioned at two sides of the transverse column (101) and second springs (103) connected with the side walls of the telescopic blocks (102), a telescopic groove (104) is arranged in the transverse column (101), the end walls of the two sides of the transverse column (101) are provided with openings (105), one end of the telescopic block (102) positioned on the second spring (103) passes through the opening (105) and slides in the telescopic groove (104), a support plate (106) is arranged in the telescopic groove (104), one end of the second spring (103) far away from the telescopic block (102) is connected with the support plate (106), the side wall of the support plate (106) is provided with a distance sensor (107) for detecting the distance between the telescopic block (102) and the side wall of the support plate (106), the side wall of the detection box (2) is provided with a display screen (108), and the distance sensor (107) is electrically connected with the display screen (108).

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