A device and method for non-destructive accurate detection of the thickness of a concrete floor

Abstract

The application discloses a kind of concrete floor thickness non-destructive accurate detection device and method thereof, belong to the technical field of detection device, it includes transmitting probe, receiving probe, display and adjusting assembly, adjusting assembly includes support frame, adjusting frame fixedly connected on support frame, installation box is slidably installed on adjusting frame and screw rod is rotationally installed on installation box, screw rod extends into adjusting frame, waist-shaped hole for sliding cooperation with screw rod is formed in adjusting frame, the end portion of screw rod in the adjusting frame is threadedly connected with mounting plate, the inner top surface of adjusting frame is slidably connected with mounting plate, lifting assembly for moving receiving probe in vertical direction is arranged on mounting plate, rotating assembly for driving screw rod to rotate is arranged in installation box, and driving assembly for driving screw rod to move is arranged in installation box.The application has the effect of improving the efficiency of concrete floor thickness detection.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of detection devices, in particular to a non-damage precise detection device for the thickness of a concrete floor and a method thereof. BACKGROUND

[0002] In the process of construction engineering construction inspection and acceptance, in order to ensure that the thickness of the floor meets the requirements of the design specification, the thickness of the concrete floor needs to be detected by the inspector. In order to improve the accuracy of the detection data, the operator sometimes avoids using the traditional drilling measurement, and instead selects a special floor thickness gauge.

[0003] In the related art, the floor thickness gauge comprises a transmitting probe, a receiving probe and a display instrument. When the floor thickness gauge is used, the transmitting probe and the receiving probe are respectively arranged on the upper and lower sides of the measured floor. The value displayed on the instrument is the distance between the two probes. The operator only needs to move the receiving probe, and when the instrument displays the minimum value, the thickness of the floor is obtained.

[0004] According to the above related technology, the inventors believe that during the detection process, the operator needs to manually adjust the position of the receiving probe. However, it is difficult for the operator to determine the shortest distance between the transmitting probe and the receiving probe in a short time. The detection process is time-consuming and inefficient. SUMMARY

[0005] In order to improve the detection efficiency of the thickness of the concrete floor, the application provides a non-damage precise detection device for the thickness of the concrete floor and a method thereof.

[0006] The non-damage precise detection device for the thickness of the concrete floor provided by the application adopts the following technical scheme:

[0007] The non-damage precise detection device for the thickness of the concrete floor and the method thereof comprise a transmitting probe, a receiving probe and a display. The device further comprises an adjusting assembly for adjusting the position of the receiving probe. The adjusting assembly comprises a support frame, an adjusting frame fixedly connected to the support frame, a mounting box slidingly installed on the adjusting frame, and a lead screw rotatingly installed on the mounting box. The lead screw extends into the adjusting frame. A waist-shaped hole for sliding cooperation with the lead screw is formed in the adjusting frame. An installation plate is threadedly connected to the end of the lead screw in the adjusting frame. The installation plate slidingly cooperates with the inner top surface of the adjusting frame. A lifting assembly for moving the receiving probe in the vertical direction is arranged on the installation plate. A rotating assembly for driving the lead screw to rotate is arranged in the mounting box. A driving assembly for driving the lead screw to move is arranged in the mounting box.

[0008] By adopting the technical scheme, the operator places the transmitting probe under the concrete floor, the operator installs the receiving probe on the lifting assembly, then the operator places the support frame above the concrete floor close to the transmitting probe, the operator first drives the first gear to rotate by rotating the rotating assembly, the first gear rotating drives the second gear to rotate, the second gear rotating drives the lead screw to rotate, the lead screw rotating drives the mounting plate to move along the length direction of the lead screw, when the value displayed on the display is the lowest, the operator stops the movement of the mounting plate; then, the operator drives the lead screw to move by using the driving assembly, the lead screw moving drives the mounting plate to move, when the value displayed on the display is the lowest, the operator stops the movement of the mounting plate again, finally, the operator drives the receiving probe to closely contact the concrete floor by using the lifting assembly, at this time, the value displayed on the display is the thickness of the concrete floor, the setting of the adjusting assembly facilitates the operator to quickly and accurately adjust the correct position of the receiving probe, thereby reducing the time of moving the receiving probe, improving the detection precision and efficiency, and the setting of the lifting assembly can reduce the contact time of the receiving probe and the concrete floor, avoiding the abrasion of the receiving probe, thereby prolonging the service life of the receiving probe.

[0009] Preferably, the rotating assembly comprises a first gear rotatably installed in the mounting box, a second gear fixedly sleeved on the end of the lead screw in the mounting box, the first gear and the second gear are in mesh with each other, the first gear is fixedly connected with a connecting rod, and the connecting rod extends out of the end of the mounting box and is fixedly connected with a hand wheel.

[0010] By adopting the technical scheme, the operator rotates the hand wheel, the hand wheel rotating drives the connecting rod to rotate, the connecting rod rotating drives the first gear to rotate, the first gear rotating drives the second gear to rotate, the second gear rotating drives the lead screw to rotate, and the lead screw rotating drives the mounting plate to move along the length direction of the lead screw.

[0011] Preferably, the driving assembly comprises a rotating rod penetrating in the mounting box, a third gear fixedly connected to the rotating rod in the mounting box, and a rotating gear fixedly connected to the end of the rotating rod away from the third gear, the first gear can be in mesh with the third gear, and the mounting box is provided with a pushing assembly for driving the first gear to move; a strip-shaped groove is formed in the length direction of the inner side wall of the adjusting frame close to the rotating gear, a driving rack for being in mesh with the rotating gear is fixedly connected to the inner bottom surface of the strip-shaped groove, and the strip-shaped groove is in communication with the waist-shaped hole.

[0012] By adopting the technical scheme, the operator moves the first gear by using the pushing assembly, the first gear is moved to engage with the third gear, the operator rotates the hand wheel, the hand wheel drives the first gear to rotate through the connecting rod, the first gear rotates to drive the third gear to rotate, the third gear rotates to drive the rotating rod to rotate, the rotating rod rotates to drive the rotating gear to rotate, the rotating gear cooperates with the driving rack to drive the mounting box to move, the mounting box moves to drive the lead screw to move, thereby driving the mounting plate to move, and finally driving the receiving probe to move.

[0013] Preferably, the pushing assembly comprises a connecting sleeve sleeved on the connecting rod, a pushing rod fixedly connected to the connecting sleeve, and a first spring fixedly connected to the connecting sleeve, the mounting box is provided with a guide groove for sliding cooperation with the connecting sleeve, a communication groove is formed in the outer side wall of the mounting box and communicates with the guide groove, the end of the first spring away from the connecting sleeve is fixedly connected to the inner end face of the communication groove, the pushing rod passes through the communication groove and slidably cooperates with the inner side wall of the communication groove, and the mounting box is provided with a locking piece for locking the position of the pushing rod.

[0014] By adopting the technical scheme, when the first spring is in a natural state, the first gear and the second gear and the third gear are not engaged, when the operator presses the pushing rod, the first spring is in a compressed state, at this time, the first gear is engaged with the second gear, thereby facilitating the operator to adjust the position of the receiving probe along the length direction of the lead screw, when the operator pulls the pushing rod, the first spring is in a stretched state, at this time, the first gear is engaged with the third gear, thereby facilitating the operator to move the position of the lead screw, the setting of the pushing assembly is beneficial to the operator to flexibly adjust the position of the receiving probe, and the setting of the locking piece is convenient for the operator to lock the position of the pushing rod.

[0015] Preferably, the locking piece comprises a positioning pin penetrating the mounting box, and a plurality of positioning holes are formed in the pushing rod and are arranged at intervals along the length direction of the pushing rod.

[0016] By adopting the technical scheme, the operator can realize that the pushing rod is locked at different positions by the plug-in cooperation of the positioning pin and different positioning holes, thereby realizing the stable engagement of the first gear and the second gear or the stable engagement of the first gear and the second gear, and the setting of the locking piece can improve the stability of the device in operation.

[0017] Preferably, the mounting box is provided with a first fixing assembly for locking the lead screw, the first fixing assembly comprising a locking gear fixedly sleeved on the lead screw located at the end of the mounting box, an abutting plate slidingly arranged on the inner side wall of the mounting box, and a locking rack fixedly connected to the abutting plate, the locking rack and the locking gear being in meshing relationship, the second spring being fixedly connected to the side of the abutting plate away from the locking rack, and the end of the second spring away from the abutting plate being fixedly connected to the inner end face of the mounting box; the connecting rod is sleeved with a driving plate, the driving plate and the inner side wall of the mounting box are in sliding fit, and the end of the driving plate close to the locking rack can abut against the abutting plate.

[0018] By adopting the above technical scheme, the abutting plate moves towards the locking gear under the action of the second spring, the abutting plate drives the locking rack to mesh with the locking gear, so as to limit the rotation of the lead screw, when the operator presses the push rod, the push rod moves to drive the connecting rod to move, the connecting rod moves to drive the driving rod to move, the driving rod pushes the abutting plate to move, so that the first gear meshes with the second gear, the locking gear is out of meshing state with the locking rack, and the locking state of the lead screw is released.

[0019] Preferably, the mounting box is provided with a second fixing assembly for locking the rotating rod, the second fixing assembly comprising a limiting block slidingly arranged on the inner side wall of the mounting box, a third spring fixedly connected to the limiting block, and a positioning rod fixedly connected to the limiting block, the limiting block is provided with a rectangular groove for sliding fit with the rotating rod, the inner bottom face of the rectangular groove is fixedly connected with an elastic pad for abutting against the rotating rod, the end of the positioning rod away from the limiting block is provided with an inclined surface, the end of the driving plate close to the positioning rod is fixedly connected with a driving rod, the end of the driving rod away from the driving plate is provided with an inclined surface, and the inclined surface of the driving rod matches the inclined surface of the positioning rod.

[0020] By adopting the above technical scheme, the limiting block moves upward under the action of the third spring, the limiting block drives the elastic pad to abut against the rotating rod, so as to limit the rotation of the rotating rod, when the operator pulls the push rod, the push rod moves on one hand to drive the first gear to mesh with the third gear, and on the other hand to drive the driving rod to move, the driving rod makes the positioning rod descend through the inclined surface, the positioning rod drives the limiting block and the elastic pad to descend, so as to release the locking state of the rotating rod.

[0021] Preferably, the lifting assembly comprises a fixed sleeve fixedly connected to the mounting plate, and a moving column slidingly arranged in the fixed sleeve, an end of the moving column extending out of the fixed sleeve is fixedly connected with the receiving probe, a fourth spring is fixedly connected to an end of the moving column away from the receiving probe, the fourth spring is fixedly connected with an inner end surface of the fixed sleeve, a moving rod is fixedly connected to the moving column, a moving groove for slidingly cooperating with the moving rod is arranged on the fixed sleeve, and a locking bolt is arranged through the fixed sleeve, the locking bolt is threadedly connected with the fixed sleeve, and the locking bolt is in abutment with the moving column.

[0022] By adopting the above technical scheme, the operator rotates the locking bolt to make the locking bolt disengage from the abutment state with the moving column, and the moving column moves downward under the action of the fourth spring, so that the receiving probe is in abutment with the floor, and the setting of the moving rod facilitates the operator to reset the moving column.

[0023] Preferably, a protective cover is fixedly sleeved on an end of the moving column close to the receiving probe, and the protective cover is made of elastic rubber.

[0024] By adopting the above technical scheme, the setting of the protective cover prevents the receiving probe from directly impacting the top surface of the floor, thereby prolonging the service life of the receiving probe.

[0025] The concrete floor thickness non-damage accurate detection method provided in the application adopts the following technical scheme: comprising the following steps:

[0026] S1, abutting the transmitting probe against the bottom surface of the floor, and mounting the receiving probe on the moving rod, adjusting the position of the support frame so that the support frame is close to the transmitting probe;

[0027] S2, pressing the pushing rod to make the first gear mesh with the second gear, locking the position of the pushing rod by the locking member, then rotating the screw rod by the rotating assembly, the movement of the mounting plate and the receiving probe along the length direction of the screw rod is driven, and the transverse position of the receiving probe is adjusted according to the data on the display;

[0028] S3, first, releasing the locking state of the locking member to the pushing rod, then pulling the pushing rod to make the first gear mesh with the third gear, moving the screw rod by the driving assembly, and adjusting the longitudinal position of the receiving probe according to the data on the display;

[0029] S4, rotating the locking bolt to release the locking state of the locking bolt to the moving column, the moving column moves under the action of the fourth spring, and the moving column drives the receiving probe to abut against the top surface of the floor;

[0030] S5, reading the number of degrees on the display.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. The transmitting probe is placed below the concrete floor, the operator installs the receiving probe on the lifting assembly, then the operator places the support frame above the concrete floor near the transmitting probe, the operator first rotates the screw rod by using the rotating assembly, the screw rod moves the mounting plate along the length direction of the screw rod, when the value displayed on the display is the lowest, the operator stops the movement of the mounting plate; then, the operator moves the screw rod by using the driving assembly, the screw rod moves the mounting plate, when the value displayed on the display is the lowest, the operator stops the movement of the mounting plate again, finally, the operator makes the receiving probe close to the concrete floor by using the lifting assembly, at this time, the value displayed on the display is the thickness of the concrete floor, the setting of the adjusting assembly facilitates the operator to quickly and accurately adjust the correct position of the receiving probe, thereby reducing the time of moving the receiving probe, improving the detection accuracy and efficiency, and the setting of the lifting assembly can reduce the contact time of the receiving probe and the concrete floor, avoiding the wear of the receiving probe, thereby prolonging the service life of the receiving probe;

[0033] 2. When the first spring is in a natural state, the first gear and the second gear, the third gear are not engaged, when the operator presses the push rod, the first spring is in a compressed state, at this time, the first gear is engaged with the second gear, thereby facilitating the operator to adjust the position of the receiving probe along the length direction of the screw rod, when the operator pulls the push rod, the first spring is in a stretched state, at this time, the first gear is engaged with the third gear, thereby facilitating the operator to move the position of the screw rod, the setting of the pushing assembly is beneficial to the operator to flexibly adjust the position of the receiving probe, and the setting of the locking piece facilitates the operator to lock the position of the push rod;

[0034] 3. The setting of the protective cover prevents the receiving probe from directly impacting the top surface of the floor, thereby prolonging the service life of the receiving probe. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a structural schematic diagram of the concrete floor thickness non-damage accurate detection device of the embodiment of the present application.

[0036] Figure 2 is a structural schematic diagram of the lifting assembly of the embodiment of the present application.

[0037] Figure 3 is an internal structure schematic diagram of the adjusting frame of the embodiment of the present application.

[0038] Figure 4 is Figure 3An enlarged schematic view at A.

[0039] Figure 5 It is the internal structure schematic diagram of the installation box of the embodiment of the application.

[0040] Legend:

[0041] 1, transmitting probe; 11, receiving probe; 13, telescopic rod; 2, adjusting assembly; 21, support frame; 22, adjusting frame; 221, waist-shaped hole; 222, strip-shaped slot; 223, horizontal bubble instrument; 23, installation box; 231, guide slot; 232, communication groove; 24, lead screw; 25, mounting plate; 26, driving plate; 261, driving rod; 3, supporting leg; 31, support sleeve; 32, supporting column; 321, supporting pad; 4, lifting assembly; 41, fixed sleeve; 42, moving column; 43, moving rod; 44, moving slot; 45, protective cover; 46, fourth spring; 47, locking bolt; 5, rotating assembly; 51, first gear; 52, second gear; 53, connecting rod; 54, hand wheel; 6, driving assembly; 61, rotating rod; 62, third gear; 63, rotating gear; 64, driving rack; 7, pushing assembly; 71, connecting sleeve; 72, pushing rod; 73, first spring; 74, positioning pin; 75, positioning hole; 8, first fixing assembly; 81, locking gear; 82, abutment plate; 83, locking rack; 84, second spring; 9, second fixing assembly; 91, limiting block; 92, third spring; 93, positioning rod; 94, rectangular slot; 95, elastic pad. DETAILED DESCRIPTION

[0042] The following will be described in detail with reference to the accompanying drawings Figures 1-5 The application will be further described in detail.

[0043] The embodiment of the application discloses a non-destructive accurate detection device for concrete floor thickness. Figure 1 、 Figure 2 The non-destructive accurate detection device for concrete floor thickness comprises a transmitting probe 1, a receiving probe 11, a display and an adjusting assembly 2.

[0044] Referring to Figure 1 、 Figure 2 The transmitting probe 1 is located below the floor, and one end of the transmitting probe 1 abuts against the bottom surface of the floor, and the other end of the transmitting probe 1 is provided with a telescopic rod 13, and the telescopic rod 13 facilitates an operator to adjust the position of the transmitting probe 1. The receiving probe 11 is located above the floor, and the display is used to display the distance between the transmitting probe 1 and the receiving probe 11.

[0045] Referring to Figure 2The adjusting assembly 2 comprises a support frame 21, an adjusting frame 22, a mounting box 23 and a lead screw 24. The adjusting frame 22 is in the shape of a rectangular box, and the adjusting frame 22 is open on the side close to the floor. The adjusting frame 22 is horizontally arranged, and a horizontal bubble instrument 223 is mounted on the side of the adjusting frame 22. The support frame 21 comprises four supporting legs 3 corresponding to the four corners of the adjusting frame 22. Each supporting leg 3 comprises a supporting sleeve 31 and a supporting column 32. The supporting sleeve 31 is open at one end and closed at the other end. The closed end of the supporting sleeve 31 is fixedly connected to the bottom surface of the adjusting frame 22. The supporting column 32 is arranged in the open end of the supporting sleeve 31 and is threadedly connected to the supporting sleeve 31. The bottom of the supporting column 32 is fixedly connected to a supporting pad 321. The horizontal bubble instrument 223 and the supporting legs 3 facilitate the adjustment of the levelness of the adjusting frame 22 by the operator.

[0046] With reference to Figure 2 The mounting box 23 is arranged on the outer side wall of the adjusting frame 22 and is slidably connected to the adjusting frame 22. The length direction of the mounting box 23 is parallel to the width direction of the adjusting frame 22. The lead screw 24 is arranged in the mounting box 23 and extends out of the end of the mounting box 23 and into the inner side wall of the adjusting frame 22. A waist-shaped hole 221 is arranged on the outer side wall of the adjusting frame 22, and the lead screw 24 is slidably connected to the inner side wall of the waist-shaped hole 221. An installation plate 25 is slidably arranged on the inner top surface of the adjusting frame 22. The lead screw 24 passes through the installation plate 25 and is threadedly connected to the installation plate 25.

[0047] With reference to Figure 2 The installation plate 25 is provided with a lifting assembly 4. The lifting assembly 4 comprises a fixed sleeve 41 and a moving column 42. The fixed sleeve 41 is vertically arranged, open at one end and closed at the other end. The closed end of the fixed sleeve 41 is fixedly connected to the bottom surface of the installation plate 25. The moving column 42 is arranged in the open end of the fixed sleeve 41 and is slidably connected to the inner side wall of the fixed sleeve 41. A moving rod 43 is fixedly connected to the end of the moving column 42 close to the installation plate 25. A moving groove 44 is arranged on the inner side wall of the fixed sleeve 41. The end of the moving rod 43 away from the moving column 42 passes out of the moving groove 44 and is slidably connected to the inner side wall of the moving groove 44.

[0048] With reference to Figure 2 The end of the moving column 42 extending out of the fixed sleeve 41 is fixedly connected to the receiving probe 11. A protective cover 45 is arranged on the end of the moving column 42 close to the receiving probe 11. The protective cover 45 is fixedly connected to the moving column 42. The protective cover 45 is made of elastic rubber, and the receiving probe 11 is arranged in the protective cover 45. A fourth spring 46 is fixedly connected to the end of the moving column 42 away from the protective cover 45. The fourth spring 46 is arranged in the fixed sleeve 41. The end of the fourth spring 46 away from the moving rod 43 is fixedly connected to the inner end surface of the fixed sleeve 41.

[0049] With reference to Figure 3 The end of the fixing sleeve 41 close to the protective cover 45 is provided with a locking bolt 47, which is threadedly connected with the fixing sleeve 41 and extends into the fixing sleeve 41 and abuts against the moving column 42. When the operator loosens the locking bolt 47, the moving column 42 moves under the elastic force of the fourth spring 46, so that the receiving probe 11 abuts against the top surface of the floor. The protective cover 45 is arranged to prevent the receiving probe 11 from directly impacting the floor, thereby prolonging the service life of the receiving probe 11.

[0050] With reference to Figure 4 , Figure 3 The mounting box 23 is provided with a rotating assembly 5 for driving the screw rod 24 to rotate. The rotating assembly 5 includes a first gear 51 and a second gear 52. The second gear 52 is sleeved on the end of the screw rod 24 located in the mounting box 23 and is fixedly connected with the screw rod 24. The first gear 51 is located in the mounting box 23 and can engage with the second gear 52. The first gear 51 is provided with a connecting rod 53, one end of which is fixedly connected with the first gear 51, and the other end of which extends out of the mounting box 23 and is fixedly connected with a hand wheel 54 at the end thereof extending out of the mounting box 23.

[0051] With reference to Figure 4 , Figure 3 The mounting box 23 is provided with a driving assembly 6, which includes a rotating rod 61, a third gear 62 and a rotating gear 63. The rotating rod 61 is provided in the mounting box 23 and has a length direction consistent with that of the screw rod 24, and is rotatably connected with the mounting box 23. The end of the rotating rod 61 located in the mounting box 23 is fixedly connected with the third gear 62, which can engage with the first gear 51. The end of the rotating rod 61 away from the third gear 62 is fixedly connected with the rotating gear 63, and the adjusting frame 22 is provided with a strip-shaped slot 222 for accommodating the rotating gear 63. The strip-shaped slot 222 is in communication with the waist-shaped hole 221 and has a length direction consistent with that of the mounting box 23, and the inner bottom surface of the strip-shaped slot 222 is fixedly connected with a driving rack 64, which engages with the rotating gear 63.

[0052] With reference to Figure 4 , Figure 4The installation box 23 is provided with a push assembly 7, which includes a connecting sleeve 71, a push rod 72, and a first spring 73. The connecting sleeve 71 is sleeved onto the connecting rod 53, and the inner sidewall of the connecting sleeve 71 is rotatably connected to the connecting rod 53. A guide groove 231 is defined on the outer sidewall of the installation box 23, which is away from the adjustment frame 22. The opening of the guide groove 231 is rectangular, and the outer sidewall of the connecting sleeve 71 slides and engages with the inner sidewall of the guide groove 231. A connecting groove 232 is defined on the outer sidewall of the installation box 23, which is connected to the guide groove 231. The first spring 73 is located in the connecting groove 232. One end of the first spring 73 is fixedly connected to the connecting sleeve 71, and the other end of the first spring 73 is fixedly connected to the inner end surface of the connecting groove 232. The push rod 72 is fixedly connected to the end of the connecting sleeve 71 away from the first spring 73, and the push rod 72 slides and engages with the inner sidewall of the connecting groove 232.

[0053] Reference Figure 4 The installation box 23 is provided with a locking member, which is a positioning pin 74. The positioning pin 74 is provided on the installation box 23 and slides with the installation box 23. The push rod 72 is provided with two positioning holes 75. The two positioning holes 75 are spaced apart along the length of the push rod 72, and the end of the positioning pin 74 extending into the installation box 23 is inserted into the positioning hole 75.

[0054] Reference Figure 5 、 Figure 4 A first fixing assembly 8 is provided in the installation box 23, and the first fixing assembly 8 includes a locking gear 81, an abutment plate 82, and a locking rack 83. The locking gear 81 is sleeved on the end of the screw rod 24 located in the installation box 23, and the locking gear 81 is fixedly connected to the screw rod 24. The abutment plate 82 is in the shape of a rectangular plate, and the outer side walls of the abutment plate 82 are slidably matched with the inner side walls of the installation box 23. The end of the abutment plate 82 away from the locking gear 81 is fixedly connected to two second springs 84. The two second springs 84 are arranged at intervals, and the end of the second spring 84 away from the abutment plate 82 is fixedly connected to the inner end surface of the installation box 23. The locking rack 83 is fixedly connected to the side of the abutment plate 82 away from the second springs 84, and the locking rack 83 and the locking gear 81 are meshed with each other. A driving plate 26 is slidably provided on the inner bottom surface of the mounting box 23 , and the end of the driving plate 26 close to the locking rack 83 can abut against the abutment plate 82 , and the connecting rod 53 passes through the driving plate 26 , and the connecting rod 53 is rotatably connected to the driving plate 26 .

[0055] Reference Figure 5 、 Figure 4A second fixing assembly 9 is disposed within the installation box 23. The second fixing assembly 9 includes a stopper 91, a third spring 92, and a positioning rod 93. The stopper 91 slides against the inner sidewall of the installation box 23. A rectangular slot 94 is defined in the stopper 91. The end of the rotating rod 61 located within the installation box 23 passes through the slot 94, and the rotating rod 61 slides against the inner sidewall of the slot 94. An elastic pad 95 is fixedly connected to the inner bottom surface of the slot 94. The upper surface of the elastic pad 95 is curved, and the upper surface of the elastic pad 95 abuts against the rotating rod 61. A third spring 92 is disposed at the bottom of the stopper 91. One end of the third spring 92 is fixedly connected to the stopper 91, and the other end of the third spring 92 is fixedly connected to the bottom of the installation box 23.

[0056] Reference Figure 5 、 ​ A positioning rod 93 is disposed on the side of the stop block 91 near the locking gear 81, and its length is aligned with the length of the rotating rod 61. One end of the positioning rod 93 is fixedly connected to the stop block 91, and the other end of the positioning rod 93 is provided with an inclined surface. A driving rod 261 is fixedly connected to the end of the driving plate 26 near the positioning rod 93, and an inclined surface is provided on the end of the driving rod 261 away from the driving plate 26, which matches the inclined surface of the positioning rod 93.

[0057] Under the action of the elastic force of the second spring 84, the abutment plate 82 drives the locking rack 83 to engage with the locking gear 81, and the locking gear 81 is restricted from rotating, thereby restricting the rotation of the screw rod 24, and then controlling the position of the mounting plate 25 and the receiving probe 11; the limit block 91 moves upward under the action of the third spring 92, and the limit block 91 drives the elastic pad 95 to abut against the rotating rod 61, thereby restricting the rotation of the rotating rod 61.

[0058] The operator first releases the lock of the positioning pin 74 on the push rod 72. When the operator presses the push rod 72, the push rod 72 moves, driving the connecting rod 53 to move. The movement of the connecting rod 53 drives the driving rod 261 to move. The driving rod 261 pushes the contact plate 82 to move, thereby causing the first gear 51 to mesh with the second gear 52, and the locking gear 81 to disengage from the locking rack 83, thereby releasing the lock of the screw rod 24. At this time, the operator rotates the handwheel 54, which drives the first gear 51 to rotate through the connecting rod 53. The first gear 51 and the second gear 52 cooperate to drive the screw rod 24 to rotate, thereby facilitating the operator to adjust the lateral position of the mounting plate 25 and the receiving probe 11.

[0059] When the operator pulls the push rod 72, the push rod 72 moves, on the one hand, the first gear 51 engages with the third gear 62, and on the other hand, the push rod 72 moves to drive the driving rod 261 to move, the driving rod 261 drives the positioning rod 93 to descend through the slope, and the positioning rod 93 drives the limiting block 91 and the elastic pad 95 to descend, so as to release the locking state of the rotating rod 61. At this time, the operator rotates the hand wheel 54, the hand wheel 54 drives the first gear 51 to rotate through the connecting rod 53, the first gear 51 cooperates with the third gear 62 to drive the rotating rod 61 and the rotating gear 63 to rotate, the rotating gear 63 cooperates with the driving rack 64 to drive the mounting box 23 to move, the mounting box 23 drives the lead screw 24 to move, thereby driving the mounting plate 25 to move and the receiving probe 11 to move, so as to facilitate the operator to adjust the position of the mounting plate 25 and the receiving probe 11 in the longitudinal direction.

[0060] The application further discloses a non-destructive precise detection method for the thickness of a concrete floor.

[0061] S1, the transmitting probe 1 is abutted against the bottom surface of the floor, the receiving probe 11 is installed on the moving rod 43, and the position of the supporting frame 21 is adjusted so that the supporting frame 21 is close to the transmitting probe 1;

[0062] S2, the push rod 72 is pressed to make the first gear 51 engage with the second gear 52, the position of the push rod 72 is locked by the locking piece, then the rotating assembly 5 is used to rotate the lead screw 24, the lead screw 24 drives the mounting plate 25 and the receiving probe 11 to move along the length direction of the lead screw 24, and the transverse position of the receiving probe 11 is adjusted according to the data on the display;

[0063] S3, the locking state of the push rod 72 by the locking piece is released, then the push rod 72 is pulled to make the first gear 51 engage with the third gear 62, the driving assembly 6 is used to move the lead screw 24, and the longitudinal position of the receiving probe 11 is adjusted according to the data on the display;

[0064] S4, the locking bolt 47 is rotated to release the locking state of the moving column 42 by the locking bolt 47, the moving column 42 moves under the action of the fourth spring 46, and the moving column 42 drives the receiving probe 11 to abut against the top surface of the floor;

[0065] S5, the degree on the display is read.

[0066] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A device for non-destructive accurate detection of the thickness of a concrete floor, comprising a transmitting probe (1), a receiving probe (11) and a display, characterized in that: The device also includes an adjustment assembly (2) for adjusting the position of the receiving probe (11), the adjustment assembly (2) including a support frame (21), an adjustment frame (22) fixedly connected to the support frame (21), a mounting box (23) slidably mounted on the adjustment frame (22), and a screw rod (24) rotatably mounted on the mounting box (23), the screw rod (24) extending into the adjustment frame (22), and a waist-shaped hole (221) for slidingly cooperating with the screw rod (24) is opened on the adjustment frame (22). The end of the screw rod (24) located in the adjusting frame (22) is threadedly connected to a mounting plate (25), the mounting plate (25) is slidably matched with the inner top surface of the adjusting frame (22), and the mounting plate (25) is provided with a lifting component (4) for moving the receiving probe (11) in the vertical direction, the mounting box (23) is provided with a rotating component (5) for driving the screw rod (24) to rotate, and the mounting box (23) is provided with a driving component (6) for driving the screw rod (24) to move; The rotating assembly (5) comprises a first gear (51) rotatably mounted in the mounting box (23), and a second gear (52) fixedly sleeved on the end of the screw rod (24) located in the mounting box (23), the first gear (51) and the second gear (52) being meshed with each other, a connecting rod (53) being fixedly connected to the first gear (51), and a hand wheel (54) being fixedly connected to the end of the connecting rod (53) extending out of the mounting box (23); The driving assembly (6) comprises a rotating rod (61) passing through the installation box (23), a third gear (62) fixedly connected to the rotating rod (61) and located in the installation box (23), and a rotating gear (63) fixedly connected to the end of the rotating rod (61) away from the third gear (62), the first gear (51) can be engaged with the third gear (62), and a pushing assembly (7) for driving the first gear (51) to move is provided in the installation box (23); the inner side wall of the regulating frame (22) close to the rotating gear (63) is provided with a strip groove (222) along its own length direction, and the inner bottom surface of the strip groove (222) is fixedly connected with a driving rack (64) for engaging with the rotating gear (63), and the strip groove (222) is connected to the waist-shaped hole (221).

2. The device for non-destructive accurate detection of the thickness of a concrete floor according to claim 1, characterized in that: The pushing assembly (7) comprises a connecting sleeve (71) sleeved on the connecting rod (53), a pushing rod (72) fixedly connected to the connecting sleeve (71), and a first spring (73) fixedly connected to the connecting sleeve (71), the mounting box (23) is provided with a guide groove (231) for slidingly cooperating with the connecting sleeve (71), the outer side wall of the mounting box (23) is provided with a communication groove (232) for communicating with the guide groove (231), the end of the first spring (73) away from the connecting sleeve (71) is fixedly connected to the inner end surface of the communication groove (232), the pushing rod (72) penetrates through the communication groove (232) and slidably cooperates with the inner side wall of the communication groove (232), and the mounting box (23) is provided with a locking member for locking the position of the pushing rod (72).

3. The device for non-destructive accurate detection of the thickness of a concrete floor according to claim 2, characterized in that: The locking member comprises a positioning pin (74) penetrating through the mounting box (23), and the pushing rod (72) is provided with a plurality of positioning holes (75) for plug-in cooperation with the positioning pin (74), and the plurality of positioning holes (75) are arranged at intervals along the length direction of the pushing rod (72).

4. The device for non-destructive accurate detection of the thickness of a concrete floor according to claim 3, characterized in that: The mounting box (23) is provided with a first fixing assembly (8) for locking the lead screw (24), the first fixing assembly (8) comprises a locking gear (81) fixedly sleeved on the lead screw (24) located at the end of the mounting box (23), an abutting plate (82) slidably arranged on the inner side wall of the mounting box (23), and a locking rack (83) fixedly connected to the abutting plate (82), the locking rack (83) and the locking gear (81) are in meshing relationship, the side of the abutting plate (82) away from the locking rack (83) is fixedly connected with a second spring (84), and the end of the second spring (84) away from the abutting plate (82) is fixedly connected to the inner end surface of the mounting box (23); the connecting rod (53) is sleeved with a driving plate (26), the driving plate (26) slidably cooperates with the inner side wall of the mounting box (23), and the end of the driving plate (26) close to the locking rack (83) can abut against the abutting plate (82).

5. The device for non-destructive accurate detection of the thickness of a concrete floor according to claim 4, characterized in that: A second fixing assembly (9) for locking the rotating rod (61) is arranged in the mounting box (23), the second fixing assembly (9) comprises a limiting block (91) slidingly arranged on the inner side wall of the mounting box (23), a third spring (92) fixedly connected to the limiting block (91), and a positioning rod (93) fixedly connected to the limiting block (91), a rectangular groove (94) for sliding cooperation with the rotating rod (61) is arranged in the limiting block (91), an elastic pad (95) for abutting against the rotating rod (61) is fixedly connected to the inner bottom surface of the rectangular groove (94), and a slope is arranged at the end of the positioning rod (93) away from the limiting block (91), a driving rod (261) is fixedly connected to the end of the driving plate (26) close to the positioning rod (93), a slope is arranged at the end of the driving rod (261) away from the driving plate (26), and the slope of the driving rod (261) is matched with the slope of the positioning rod (93).

6. The device for non-destructive accurate detection of the thickness of a concrete floor slab according to claim 5, characterized in that: The lifting assembly (4) comprises a fixed sleeve (41) fixedly connected to the mounting plate (25) and a moving column (42) slidingly arranged in the fixed sleeve (41), the end of the moving column (42) extending out of the fixed sleeve (41) is fixedly connected with the receiving probe (11), a fourth spring (46) is fixedly connected to the end of the moving column (42) away from the receiving probe (11), the fourth spring (46) is fixedly connected with the inner end surface of the fixed sleeve (41), a moving rod (43) is fixedly connected to the moving column (42), a moving groove (44) for sliding cooperation with the moving rod (43) is arranged on the fixed sleeve (41), and a locking bolt (47) is arranged through the fixed sleeve (41), the locking bolt (47) is threadedly matched with the fixed sleeve (41), and the locking bolt (47) abuts against the moving column (42).

7. The device for non-destructive accurate detection of the thickness of a concrete floor slab according to claim 6, characterized in that: A protective cover (45) is fixedly sleeved on the end of the moving column (42) close to the receiving probe (11), and the protective cover (45) is made of elastic rubber.

8. A method for non-destructive accurate detection of the thickness of a concrete floor, based on the device for non-destructive accurate detection of the thickness of a concrete floor according to claim 7, characterized in that: The method comprises the following steps: S1, abutting the transmitting probe (1) against the bottom surface of the floor slab, and mounting the receiving probe (11) to the moving rod (43), adjusting the position of the support frame (21) so that the support frame (21) is close to the transmitting probe (1); S2, pressing the pushing rod (72) so that the first gear (51) is engaged with the second gear (52), locking the position of the pushing rod (72) by using a locking piece, then rotating the lead screw (24) by using the rotating assembly (5), the lead screw (24) drives the mounting plate (25) and the receiving probe (11) to move along the length direction of the lead screw (24), and adjusting the transverse position of the receiving probe (11) according to the data displayed on the display; S3, first release the locking state of the locking member to the push rod (72), then pull the push rod (72) so that the first gear (51) and the third gear (62) are engaged with each other, move the lead screw (24) by using the driving assembly (6), and adjust the longitudinal position of the receiving probe (11) according to the data on the display; S4, rotate the locking bolt (47) to release the locking state of the locking bolt (47) to the moving column (42), the moving column (42) moves under the action of the fourth spring (46), and the moving column (42) drives the receiving probe (11) to abut against the top surface of the floor; S5, read the degree on the display.

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