CN113405512A

CN113405512A - Geotextile thickness measuring device

Info

Publication number: CN113405512A
Application number: CN202110673300.6A
Authority: CN
Inventors: 武宁; 沈亚风; 凌道杰; 严仁荷; 童秀梅
Original assignee: Zhejiang Aili Intelligent Testing Technology Group Co ltd
Current assignee: Zhejiang Aili Intelligent Testing Technology Group Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-09-17
Anticipated expiration: 2041-06-17
Also published as: CN113405512B

Abstract

The application discloses geotextile thickness survey device, comprises a workbench, it is connected with the carousel to rotate on the workstation, evenly be provided with a plurality of reference discs along the circumference direction of carousel on the carousel, still be provided with the support on the workstation and be used for driving carousel pivoted actuating mechanism, the support is fixed on the workstation, and be provided with first counterweight on the support, the second counterweight, third counterweight and instrument, first counterweight, swing joint is all followed on the support to second counterweight and third counterweight, first counterweight is directly over the reference disc rotation path, the pointer butt of instrument is all the time in first counterweight upper end, still be provided with the lifter on the workstation. After the detection of a single sample is finished, the first weight part, the second weight part and the third weight part are separated from the sample under the control of the lifting part, and the driving mechanism drives the turntable to rotate, so that the next sample to be detected moves to the position below the first weight part, the automatic measurement is realized, the workload of workers is reduced, and the detection flow is optimized.

Description

Geotextile thickness measuring device

Technical Field

The application relates to the technical field of material detection, in particular to a geotextile thickness measuring device.

Background

Geotextile refers to a coiled material for civil engineering which is made by weaving synthetic fibers or by non-woven processes such as cementation, hot pressing and needle punching. Geotextiles have multiple uses such as isolation, filtration, protection and the like, but the uses are different, and the performance requirements for geotextiles are also different. Currently, after geotextiles are produced, the performance of geotextiles needs to be tested to determine whether the performance requirements can be met. The thickness of the geotextile is an object to be detected.

The thickness of the geotextile is defined as the distance between the front and back sides of the geotextile under a specified pressure.

Chinese patent with publication number CN212179858U discloses a geotechnical cloth thickness gauge, comprising a base plate, set up the organism on the bottom plate, the fixed benchmark dish that is provided with on the organism, be provided with the presser foot on the benchmark dish, the top of benchmark dish is provided with the balancing pole with organism looks articulated, the bar hole has been seted up directly over the presser foot on the balancing pole, the vertical fixed plate that is provided with on the organism, be provided with the instrument on the fixed plate, the pointer of instrument is vertical to pass behind the bar hole with the upper end looks butt of presser foot downwards, one side of keeping away from the pin joint of balancing pole on the organism is provided with the eccentric wheel that is used for supporting the balancing pole and is connected with the organism rotation, the one end of keeping away from the pin joint on the balancing pole is provided with the weight dish, be provided with the locating component who is used for advancing line location to the presser foot on the fixed plate, the presser foot passes through locating component and fixes a position the back, the up end of presser foot is inconsistent with the pointer of instrument.

The three pressures of the single presser foot, the presser foot balancing rod and the presser foot balancing rod plus the weight belong to the specified pressure, and the three different pressures are respectively applied in the detection process so as to respectively detect the corresponding thicknesses of the geotextile under different pressures.

For the related technologies, in actual detection, the detection result of a single geotextile sample is not necessarily accurate, a plurality of samples are often required to be set, and since each sample is required to simulate three different pressure conditions, the thickness gauge needs to be frequently operated for workers, and the detection process is very complicated.

Disclosure of Invention

In order to optimize the thickness measurement of geotextiles, the present application provides a geotextile thickness determination device.

The application provides a geotextile thickness measurement device adopts following technical scheme:

a geotextile thickness measuring device comprises a workbench, wherein the workbench is rotatably connected with a turntable, the turntable is uniformly provided with a plurality of reference discs for placing geotextiles along the circumferential direction of the turntable, the workbench is also provided with a support and a driving mechanism for driving the turntable to rotate, the support is fixed on the workbench, the support is provided with a first weight, a second weight, a third weight and an instrument, the first weight, the second weight and the third weight are movably connected on the support, the first weight is positioned right above the rotation path of the reference disc, a pointer of the instrument is always abutted against the upper end of the first weight, the workbench is also provided with a lifting member for respectively controlling the lifting of the first weight, the second weight and the third weight, and the lifting member controls the descending of the second weight, the second counterweight part is abutted against the first counterweight part; and in the process that the lifting member controls the third counterweight member to descend, the third counterweight member is abutted against the second counterweight member.

Through adopting above-mentioned technical scheme, in single sample measurement process, first counterweight, second counterweight and third counterweight exert pressure on the sample in proper order under the control of piece that goes up and down to automatically simulate out different pressure condition, and single sample detection back that finishes, first counterweight, second counterweight and third counterweight are again under the control of piece that goes up and down with the sample separation, actuating mechanism drives the carousel and rotates, make next sample that awaits measuring remove first counterweight below, realize automated measurement, reduce staff's work load, optimize the detection flow.

Optionally, a lifting piece sliding connection is on the workbench, all be equipped with the butt joint pole on first counterweight, second counterweight and the third counterweight, three butt joint pole supports on the lifting piece in proper order along the slip direction of lifting piece respectively, set up two logical grooves that supply the butt joint pole on second counterweight and the third counterweight to wear to establish respectively on the lifting piece, all be provided with the spigot surface on the butt joint pole, actuating mechanism still is used for driving the slip of lifting piece.

Through adopting above-mentioned technical scheme, along with the removal of piece that goes up and down, at first counterweight breaks away from the support of piece that goes up and down and the butt is on the benchmark dish, first counterweight is continuously kept away from to the piece that goes up and down, the butt pole of second counterweight and third counterweight enters into corresponding logical groove successively to realize first counterweight and second counterweight and successively superpose gravity on first counterweight, in addition, actuating mechanism still drives the slip of piece that goes up and down, reduce the setting of driving source, be favorable to reducing equipment cost.

Optionally, actuating mechanism includes motor, lead screw and one-way driving piece, the motor is fixed on the workstation, the lead screw rotates to be connected on the workstation, the output shaft and the lead screw coaxial coupling of motor, the lead screw is threaded connection in proper order on one-way driving piece and lifting member, one-way driving piece is used for promoting the carousel when keeping away from the motor and rotates, and the in-process of one-way driving piece and carousel contact, and first counterweight supports on lifting member.

Through adopting above-mentioned technical scheme, the slip that drives one-way driving piece and lift piece simultaneously is rotated to the lead screw, nevertheless because one-way driving piece drive carousel pivoted in-process, first counterweight supports on the lift piece always, just that first counterweight can not cause the interference to the rotation of carousel promptly, and when one-way driving piece break away from with the carousel contact back, the carousel no longer rotates, and the reference disc removes under first counterweight, first counterweight breaks away from the lift piece again afterwards and can support in order to carry out follow-up measurement on corresponding reference disc.

Optionally, the one-way driving piece includes slider, shifting block and dwang, the shifting block rotates to be connected on the lateral wall of slider, be fixed with the butt board that is in shifting block and keeps away from lift one side on the lateral wall of slider, the dwang rotates to be connected on the workstation, and dwang and butt board be in the same one side of slider, be fixed with on the lateral wall of dwang with the shifting block complex accept the board, through the gear train transmission between dwang and the carousel.

Through adopting above-mentioned technical scheme, setting up of shifting block and butt plate has ensured that one-way driving piece can drive the carousel and rotate keeping away from the in-process of motor, and can not drive the carousel rotation at the in-process that one-way driving piece is close to the motor to make the carousel rotate along same rotation direction intermittent type formula always, every benchmark dish homoenergetic on the guarantee carousel can participate in detecting.

Optionally, the guide surface that all offers with spigot surface looks adaptation on the lateral wall of logical groove and the tip of lifting member towards one-way driving piece.

Through adopting above-mentioned technical scheme, slide on the guide face through the spigot surface when the butt pole for the butt pole descends gradually, reduces because of the extra impact force that the pressure variation in-process produced, reduces the interference that causes the testing result.

Optionally, the bearing plate has a plurality ofly, and a plurality ofly bears the plate and evenly distributes along the circumferential direction of dwang.

By adopting the technical scheme, the more the bearing plates are, the smaller the included angle between the bearing plates is, the small the angle of the bearing plate which needs to be pushed to rotate when the bearing plate is pushed by the shifting block once, and the short contact time between the shifting block and the bearing plate.

Optionally, a spring is connected between the shifting block and the sliding block, the spring is located on one side, away from the abutting plate, of the shifting block, and the shifting block has a tendency of moving towards one side of the abutting plate under the action of the spring.

Through adopting above-mentioned technical scheme, the setting up of spring ensures that the shifting block contacts and accepts the board, and the atress deformation of spring can guarantee again that the shifting block is difficult to drive near the in-process of motor and accepts the board and do reverse rotation.

Optionally, the two through grooves are arranged along the width direction of the lifting piece in a staggered manner.

Through adopting above-mentioned technical scheme, the logical groove of dislocation setting can reduce the requirement to a lift length for whole detection device's structure is compacter, reduces occupation space.

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

1. different pressures are automatically applied to detect the thicknesses of the samples under different pressures, and one sample is automatically replaced by the next sample to be detected after detection is finished, so that the workload of workers is greatly reduced, and automatic detection is realized;

2. the motor respectively controls the lifting piece and the turntable, only one driving source needs to be arranged, and the equipment cost is effectively controlled.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a drive mechanism according to an embodiment of the present application.

Fig. 3 is a schematic connection relationship between the lifting member and the first, second and third weight members according to the embodiment of the present application.

Description of reference numerals: 1. a work table; 11. a circular truncated cone; 2. a turntable; 21. a reference plate; 3. a drive mechanism; 31. a motor; 32. a screw rod; 33. a one-way drive member; 331. a slider; 332. shifting blocks; 333. rotating the rod; 334. a butt joint plate; 335. a spring; 336. a bearing plate; 34. a first gear; 35. a second gear; 4. a support; 41. a connecting rod; 5. a first weight member; 51. a first avoidance slot; 52. a slide bar; 6. a second weight member; 61. a second avoidance slot; 62. a hoisting ring; 7. a third weight member; 71. hooking; 72. a limiting rod; 8. a lifting member; 81. a chute; 82. a mounting seat; 83. a through groove; 9. a meter; 10. a butting rod; 101. a guide surface; 102. a guide surface.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses geotextile thickness measuring device. Referring to fig. 1, the geotextile thickness measuring device comprises a workbench 1, wherein a circular table 11 protrudes from the surface of the workbench 1, the circular table 11 and the workbench 1 are integrally formed, and a rotary table 2 is rotatably connected to the circular table 11. A plurality of reference discs 21 are fixed on the upper surface of the rotating disc 2, and the reference discs 21 are uniformly distributed along the circumferential direction of the rotating disc 2 and are all close to the circumferential side wall of the rotating disc 2. The workbench 1 is further provided with a support 4 and a driving mechanism 3, wherein one end of the support 4 is fixed on the workbench 1 on one side of the turntable 2, the other end of the support 4 passes through the upper side of the turntable 2 and extends to the upper side of the circular truncated cone 11, a lifting piece 8 is arranged on the support 4 in a sliding mode, and a first counterweight piece 5, a second counterweight piece 6 and a third counterweight piece 7 are supported on the lifting piece 8. The driving mechanism 3 drives the slide of the lifter 8 and the rotation of the turntable 2, respectively.

After the turntable 2 rotates once, the lifting member 8 slides again, and the first counterweight member 5, the second counterweight member 6 and the third counterweight member 7 sequentially separate from the support of the lifting member 8 to apply gravity to the reference plate 21. When a sample to be detected is placed on the reference disc 21, three detection environments with different pressures can be simulated.

Referring to fig. 1, the driving mechanism 3 includes a motor 31, a lead screw 32 and a one-way driving member 33, one end of the lead screw 32 is rotatably connected to the circular truncated cone 11, the other end of the lead screw 32 extends out of the turntable 2 along the radial direction of the circular truncated cone 11, and the motor 31 is fixed on the worktable 1 and coaxially connected with the end of the lead screw 32 outside the turntable 2.

Referring to fig. 1 and 2, the one-way driving member 33 includes a sliding block 331, a spring 335, a shifting block 332, and a rotating rod 333, the rotating rod 333 is located at one side of the screw rod 32 and is rotatably connected to the working platform 1, a plurality of bearing plates 336 are fixed on a side wall of the rotating rod 333, and the plurality of bearing plates 336 are uniformly distributed along a circumferential direction of the rotating rod 333. A gear set is connected between the rotating rod 333 and the rotating disk 2, the gear set comprises a first gear 34 and a second gear 35, the first gear 34 is coaxially connected with the rotating disk 2, the first gear 34 is fixed on the circumferential outer side wall of the rotating disk 2, the second gear 35 is coaxially connected with the rotating rod 333 and is meshed with the first gear 34, and the diameter of the first gear 34 is larger than that of the second gear 35. One end of the shifting block 332 is rotatably connected to a side wall of the slide block 331 facing the rotating rod 333, an abutting plate 334 is further fixed to the side wall of the slide block 331, and the abutting plate 334 is located on a side of the shifting block 332 away from the lifting piece 8. The spring 335 is located on the side of the dial 332 facing away from the abutment plate 334, and one end of the spring 335 is connected to the dial 332 and the other end of the spring 335 is connected to the slider 331. The spring 335 is always in a compressed state, so that the shifting block 332 abuts against the abutting plate 334 under the action of the spring 335, when the shifting block 332 abuts against the abutting plate 334, the shifting block 332 is perpendicular to the corresponding side wall of the slide block 331, the distance between the end of the shifting block 332 far away from the slide block 331 and the slide block 331 is farthest, and the end of the shifting block 332 passes through the rotation path of the receiving plate 336 in the process of sliding with the slide block 331.

Referring to fig. 1 and 3, the lifting member 8 is a cuboid, a mounting seat 82 is fixed on the surface of the lifting member 8 facing the workbench 1, and the screw rod 32 is connected to the mounting seat 82 in a threaded manner. Two through grooves 83 have been seted up on the surface that lifter 8 deviates from workstation 1, and two through grooves 83 are arranged along the length direction of lifter 8, and two through grooves 83 along the width direction dislocation set of lifter 8. In addition, the sliding grooves 81 are formed in the side walls of the two sides of the lifting piece 8, the two connecting rods 41 extend out of the support 4, one ends of the two connecting rods 41 are fixed to the two sides of the support 4 respectively, and the other ends of the two connecting rods 41 face the workbench 1 and are connected to the two sliding grooves 81 of the lifting piece 8 in a sliding mode respectively.

Referring to fig. 1 and 3, the second counterweight 6 is a balance bar, one end of the balance bar is hinged to the side wall of the bracket 4 close to the motor 31, the other end of the balance bar is fixed with a butt-joint rod 10 and supported on the sliding part through the butt-joint rod 10, and a lifting ring 62 is fixed on the end of the balance bar which is not hinged. The balance bar is provided with a second avoiding groove 61 which penetrates through the balance bar along the vertical direction, and the second avoiding groove 61 is positioned above the rotating path of the reference disc 21. The first weight part 5 is arranged below the second avoiding groove 61, the bottom of the first weight part 5 is provided with the second avoiding groove 61 along the horizontal direction for avoiding the screw rod 32, and the first weight part 5 is not only fixed with the abutting rod 10 which is arranged at one side of the first weight part 5 departing from the motor 31, but also fixed with the sliding rod 52 which extends upwards to penetrate through the support 4. When the first weights 5 are supported on the lifter 8 by the respective abutment bars 10, the first weights 5 are located above the reference plate 21 and do not contact the reference plate 21, and when the abutment bars 10 of the first weights 5 are disengaged from the lifter 8, the first weights 5 move downward under the restriction of the slide bars 52 and abut on the reference plate 21. In addition, when the one-way driving member 33 drives the turntable 2 to rotate, in order to avoid the influence of the first balance weight 5 on the rotation of the reference plate 21, the abutting rod 10 of the first balance weight 5 needs to be always supported on the lifting member 8, that is, the time for separating the abutting rod 10 of the first balance weight 5 from the lifting member 8 needs to be later than the time for separating the shifting block 332 from the receiving plate 336.

Referring to fig. 1 and 3, the third counterweight 7 is a weight, a hook 71 and a limiting rod 72 are fixed at the top of the weight, a butt joint rod 10 is also arranged at the bottom of the weight, the butt joint rod 10 on the weight is supported on the lifting member 8, and the hook 71 of the weight is located above the hanging ring 62. And when the abutting rod 10 on the weight is separated from the lifting piece 8, the weight moves downwards under the limitation of the limiting rod 72 until the hook 71 is hooked on the hanging ring 62, so that the weight of the weight is applied to the balancing pole. It should be noted that during the movement of the lifting member 8 away from the motor 31, the abutment rod 10 of the second weight member 6 is separated from the lifting member 8 later than the abutment rod 10 of the first weight member 5 is separated from the lifting member 8, but earlier than the abutment rod 10 of the third weight member 7 is separated from the lifting member 8.

Referring to fig. 1 and 3, the first weight member 5 is separated from the lifting member 8 by moving the lifting member 8 to a side away from the motor 31, so that the abutting rod 10 on the first weight member 5 slides down from the end of the lifting member 8 close to the motor 31. The second and

third balance weights

6, 7 are separated from the lifting member 8 by inserting the corresponding abutting rods 10 into the through slots 83, that is, the abutting rods 10 of the second and

third balance weights

6, 7 correspond to the two through slots 83 respectively,

the side wall of the through groove 83 away from the motor 31 is provided with a guide surface 102. The end surface of the lifting member 8 facing the motor 31 is also provided with a guide surface 102, and the side of all the abutting rods 10 facing away from the motor 31 is provided with a guide surface 101 adapted to the guide surface 102.

Referring to fig. 1 and 3, a meter 9 is fixed on the top of the support 4 directly above the first counterweight 5, in this example, the meter 9 is a dial indicator, a retractable probe is arranged on the meter 9, and the probe sequentially passes through the support 4 and the second avoidance slot 61 and abuts against the top of the first counterweight 5. Along with the movement of the first balance weight 5 in the vertical direction, the pressure applied to the probe changes, so that the probe correspondingly extends and retracts, and the instrument 9 detects a corresponding distance. To further facilitate the reading, the meter 9 may also be electrically connected to a processor, by which the reading displayed by the meter 9 is automatically recorded.

The application principle of geotechnical fabric thickness measuring device of the embodiment of this application is: before starting the detection, the first counterweight 5, the second counterweight 6 and the third counterweight 7 are all supported on the lifting member 8 through the abutting rods 10, the abutting rods 10 on the second counterweight 6 and the third counterweight 7 are all located on the side of the corresponding through groove 83 far away from the motor 31, and the shifting block 332 is located on the side of the rotating rod 333 far away from the support 4. The turntable 2 is adjusted so that one reference plate 21 is positioned right below the first balance weight 5, and the staff member places the samples to be detected on all the reference plates 21 respectively.

When the detection is started, the motor 31 is started, and the slider 331 and the lifter 8 are simultaneously moved to the side away from the motor 31. The shifting block 332 is firstly contacted with the bearing plate 336 and drives the rotating rod 333 to rotate, the rotating rod 333 drives the rotating disc 2 to rotate through the gear set, and when the shifting block 332 is separated from the bearing plate 336, the rotating disc 2 just rotates the adjacent reference disc 21 to the position right below the first counterweight part 5. Next, the abutment rod 10 on the first weight 5 slides down from the lifting member 8, the first weight 5 exerts its own weight on the sample, and the motor 31 is suspended to wait for the meter 9 to read stably. After the reading is finished, the motor 31 continues to work, then the abutting rods 10 on the second balance weight 6 are inserted into the corresponding through grooves 83, the second balance weight 6 loses the support of the lifting member 8 and rotates downwards to abut on the first balance weight 5, the pressure on the sample is changed, and the motor 31 stops working again to enable the meter 9 to finish the reading. After the third start of the motor 31, the abutting rod 10 of the third weight 7 enters the corresponding through slot 83, and the third weight 7 exerts gravity on the second weight 6, so that the pressure applied to the sample is increased again. After the meter 9 finishes the third reading, the motor 31 rotates reversely, the third counterweight 7, the second counterweight 6 and the first counterweight 5 are sequentially jacked up again by the lifting member 8 to gradually reduce the extrusion on the sample, and the shifting block 332 overcomes the elastic force of the spring 335 to rotate towards one side of the spring 335 when being squeezed by the bearing plate 336 in the resetting process of the sliding block 331, so that the shifting block 332 smoothly passes through the bearing plate 336. After the slide block 331 and the lifting member 8 are restored to the initial positions, the motor 31 rotates forward again to start the detection of the next sample.

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. A geotextile thickness measuring device, characterized in that: comprises a workbench (1), wherein the workbench (1) is rotatably connected with a turntable (2), the turntable (2) is uniformly provided with a plurality of reference discs (21) for placing geotextiles along the circumferential direction of the turntable (2), the workbench (1) is also provided with a support (4) and a driving mechanism (3) for driving the turntable (2) to rotate, the support (4) is fixed on the workbench (1), the support (4) is provided with a first counterweight (5), a second counterweight (6), a third counterweight (7) and a meter (9), the first counterweight (5), the second counterweight (6) and the third counterweight (7) are all movably connected on the support (4), the first counterweight (5) is positioned right above the rotation path of the reference disc (21), and a pointer of the meter (9) is always abutted against the upper end of the first counterweight (5), the workbench (1) is further provided with a lifting piece (8) used for respectively controlling the first counterweight piece (5), the second counterweight piece (6) and the third counterweight piece (7) to lift, and in the process that the lifting piece (8) controls the second counterweight piece (6) to descend, the second counterweight piece (6) is abutted to the first counterweight piece (5); in the process that the lifting piece (8) controls the third counterweight piece (7) to descend, the third counterweight piece (7) is abutted to the second counterweight piece (6).

2. The geotextile thickness measuring apparatus of claim 1, wherein: lifting member (8) sliding connection is on workstation (1), all be equipped with on first counterweight (5), second counterweight (6) and third counterweight (7) and connect pole (10), three connect pole (10) to support in proper order on lifting member (8) along the slip direction of lifting member (8) respectively, set up two logical groove (83) that supply on second counterweight (6) and third counterweight (7) respectively that connect pole (10) to wear to establish on lifting member (8), all be provided with spigot surface (101) on connect pole (10), actuating mechanism (3) still are used for driving the slip of lifting member (8).

3. The geotextile thickness measuring apparatus of claim 2, wherein: actuating mechanism (3) are including motor (31), lead screw (32) and one-way driving piece (33), motor (31) are fixed on workstation (1), lead screw (32) rotate to be connected on workstation (1), the output shaft and lead screw (32) coaxial coupling of motor (31), lead screw (32) threaded connection is in proper order on one-way driving piece (33) and lifting member (8), one-way driving piece (33) are used for promoting carousel (2) to rotate when keeping away from motor (31), and the in-process of one-way driving piece (33) and carousel (2) contact, and first counterweight (5) support on lifting member (8).

4. The geotextile thickness measuring apparatus of claim 3, wherein: one-way driving piece (33) include slider (331), shifting block (332) and dwang (333), shifting block (332) rotate to be connected on the lateral wall of slider (331), be fixed with on the lateral wall of slider (331) and be located shifting block (332) and keep away from butt joint board (334) of lifter (8) one side, dwang (333) rotate to be connected on workstation (1), and dwang (333) and butt joint board (334) are in the same one side of slider (331), be fixed with on the lateral wall of dwang (333) and dial block (332) complex socket plate (336), through the gear train transmission between dwang (333) and carousel (2).

5. The geotextile thickness measuring apparatus of claim 2, wherein: and guide surfaces (102) matched with the guide surfaces (101) are arranged on the side walls of the through grooves (83) and the end parts of the lifting pieces (8) facing the one-way driving pieces (33).

6. The geotextile thickness measuring apparatus of claim 4, wherein: the bearing plates (336) are arranged in a plurality, and the bearing plates (336) are uniformly distributed along the circumferential direction of the rotating rod (333).

7. The geotextile thickness measuring apparatus of claim 4, wherein: a spring (335) is connected between the shifting block (332) and the sliding block (331), the spring (335) is positioned on one side of the shifting block (332) departing from the abutting plate (334), and the shifting block (332) has a tendency of moving towards one side of the abutting plate (334) under the action of the spring (335).

8. The geotextile thickness measuring apparatus of claim 2, wherein: the two through grooves (83) are arranged along the width direction of the lifting piece (8) in a staggered mode.