Telescopic floor thickness nondestructive testing device

Abstract

The invention relates to the field of building detection device production, in particular to a telescopic floor thickness nondestructive detection device which comprises a detection cylinder of a long annular structure. Through the linkage design of the folding and unfolding sleeve, the annular disc, the supporting auxiliary block, the limiting block and the compression spring and in combination with the L-shaped structure of the contraction hole, one-key type rapid unfolding and contraction of the supporting rod are achieved, and an operator only needs to lift and rotate the moving disc to complete unfolding or resetting of the supporting rod; the elastic potential energy of the compression spring assists in completing the action, multiple components do not need to be manually adjusted, rapid unlocking and locking are achieved through the sliding path (from the horizontal end to the vertical end to the vertical hole) of the limiting block in the contraction hole, the operation steps are greatly reduced, the elastic force of the compression spring drives the contraction and expansion sleeve and the annular disc to automatically move downwards, and the operation efficiency is greatly improved. The supporting rods are unfolded through rotation of the supporting attached blocks, and the angles of the supporting legs do not need to be manually adjusted one by one.

Description

Technical Field

[0001] The invention relates to the field of production of building detection devices, in particular to a retractable floor thickness nondestructive detection device. Background Art

[0002] During the construction and quality acceptance of building projects, floor thickness is a key parameter that directly affects the safety and durability of the structure. Existing non-destructive testing devices for floor thickness usually use ultrasonic testing technology, including ultrasonic probes, transmitters and receivers. It is mainly based on the characteristics of ultrasonic waves propagating in the medium and encountering interface reflection, and combines the propagation speed and time to calculate the thickness of the floor. Traditional retractable non-destructive testing devices for floor thickness usually adjust the length through a mechanical telescopic rod structure. This structure is generally composed of multiple levels of nested rods. The operator can manually pull out or retract the rods step by step to achieve the required detection length, thereby improving the versatility of the detection.

[0003] The Chinese patent application number 202420456428.6 for "a thickness detection device for building material detection" includes a transmitting probe, a support rod and an auxiliary bracket. The auxiliary bracket is composed of a column, a telescopic column, a bolt, a limit slider, a storage slot, a support foot and a universal wheel. In actual application, this technical solution has certain limitations: the deployment and storage process of the auxiliary bracket is relatively cumbersome, and the limit sleeve and the locking ring need to be rotated multiple times, and the support foot needs to be rotated to open and store at the same time. For work scenarios that require frequent changes in the detection position, these operation steps will take up a lot of time, thereby reducing the overall efficiency of the detection work. Secondly, during the deployment process, the support foot of the device can only be deployed at a fixed angle to support on the ground. When detecting on high floors, due to the fixed support angle, it is difficult to adapt to changes in the external environment, and the stability is poor. It is easy to cause inaccurate detection results due to shaking, and even safety accidents may occur. In the low-floor space, due to the inability to adjust the support angle, the space will be too large, making it difficult to place the device in a suitable position, affecting the normal progress of the detection work.

[0004] Therefore, it is necessary to propose a retractable floor thickness nondestructive testing device to solve the above technical problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a retractable non-destructive testing device for floor thickness, which solves the technical problems of the existing auxiliary bracket being cumbersome to unfold and store, the supporting foot angle being fixed, the low efficiency, poor stability, and unreasonable space occupancy when frequently changing the testing position and testing high and low floors, etc.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: The technical solution adopted by the present invention to solve the technical problem is: a retractable nondestructive testing device for the thickness of a floor slab, comprising a testing cylinder in the shape of an elongated ring; A nondestructive detector, which is arranged on the top of the detection cylinder; There is at least one support rod, which is arranged in a ring shape at the bottom of the detection cylinder, and is arranged in an inclined shape between the support rod and the ground, for supporting the detection cylinder; A rapid expansion and contraction assembly is provided on the detection tube and is used to rapidly expand and contract the plurality of support rods; The adaptive support assembly is arranged on the detection cylinder and can expand the support rod to different angles according to different floor heights.

[0007] Preferably, the rapid stowage and deployment assembly comprises: The retractable sleeve is in a ring-shaped structure and is sleeved on the outer side of the detection tube for sliding connection; The annular disk is in a ring-shaped structure and is slidably connected to the lower outer side of the detection tube, and the retractable sleeve is connected to the top of the annular disk; A supporting attachment block, which corresponds to the supporting rod one by one, and one end of which is rotatably connected to the bottom of the detection cylinder, and the other end of which is rotatably connected to the middle part of the supporting rod; A movable plate is fixedly mounted on the top of the retractable sleeve and slidably connected to the outside of the detection tube, and handle grooves are symmetrically opened on the movable plate; There are two limit blocks, which are symmetrically installed on the inner wall of the moving plate; There are two vertical holes, which are symmetrically opened in the middle of the detection tube. The limit block is slidably connected inside the vertical hole. A contraction hole is opened at the top of the vertical hole, which is an L-shaped structure; The compression spring is at least one in number and is fixedly installed between the bottom end of the detection cylinder and the bottom wall of the annular disk.

[0008] Preferably, the bottom of the detection cylinder is equipped with reverse plates in a ring array, and the reverse plates are arranged between the spaced support rods.

[0009] Preferably, a supporting ball is installed at one end of the supporting rod away from the detection tube, and an anti-slip pad with a threaded hole is provided on the bottom surface of the supporting ball.

[0010] Preferably, an arc-shaped groove is provided between the spaced reverse plates, an elastic protective cover is provided on the inner side of the arc-shaped groove, and the spaced arc-shaped groove is matched with the supporting ball piece.

[0011] Preferably, the adaptive support assembly comprises: A linkage gear is transversely mounted in the middle of the detection cylinder, and a first rack block and a second rack block are respectively connected to the upper and lower inner sides of the detection cylinder through slide rails; A cross groove is provided below the detection cylinder, and the bottom of the second rack block and the top of the cross block are fixedly connected; An adjustment component, which is arranged on the top of the first rack block and is used to drive the non-destructive detector to adjust along the floor surface; A cross block, which is mounted on the inner side of the annular disk and is slidably connected to the inner side of the cross groove; There is at least one locking groove, which is opened in a linear array at the front and rear ends of the detection tube. The locking groove is an L-shaped hole. The vertical end of the locking groove is perpendicular to the vertical hole and connected to the vertical hole. The horizontal end of the locking groove is parallel to the axial direction of the detection tube.

[0012] Preferably, the adjustment component comprises: A lifting cylinder mounted on the top of the first rack block; An adjusting rod is slidably connected inside the lifting cylinder, and a nondestructive detector is plugged and installed on the top of the adjusting rod; A limiting hole is provided on one side of the lifting cylinder; A driving block is installed below the adjusting rod and is slidably connected to the inner side of the limiting hole; An expansion spring mounted below the lifting cylinder; The locking groove has a horizontal end and is communicated with the limiting hole.

[0013] Preferably, a finger groove is formed on a side of the driving block facing away from the adjusting rod, and a magnet block which attracts the driving block is installed on a side of the locking groove close to the driving block.

[0014] The present invention has achieved the following beneficial effects: (1) The present invention realizes the "one-button" rapid expansion and contraction of the support rod by setting a linkage design of the retractable sleeve, annular disk, supporting attachment, limit block and compression spring, combined with the L-shaped structure of the contraction hole. The operator only needs to lift and rotate the movable disk to complete the expansion or resetting of the support rod. The elastic potential energy of the compression spring assists in completing the action, and there is no need to manually adjust multiple components. The present design realizes rapid unlocking and locking through the sliding path of the limit block in the contraction hole (horizontal end → vertical end → vertical hole), which greatly reduces the number of operating steps. The elastic force of the compression spring drives the retractable sleeve and the annular disk to move downward automatically, and the support rod is expanded by rotating the supporting attachment, and there is no need to manually adjust the angle of the supporting feet one by one.

[0015] (2) The present invention dynamically links the support rod deployment angle with the height adjustment of the nondestructive detector by setting a linkage design of a linkage gear, a first rack block, a second rack block, a cross groove and a locking groove. When the annular disk drives the cross block to move downward, the second rack block drives the linkage gear to rotate, and the first rack block is linked to move upward, pushing the adjustment component and the nondestructive detector to extend. At the same time, the support rod deployment angle is adaptively adjusted with the position of the moving disk. When detecting on a high floor, the support rod deployment angle is adaptively increased, and the detector height is synchronously increased to ensure detection stability. When detecting on a low floor, the support rod angle is reduced, the detector height is lowered, and the space occupancy is reduced to adapt to narrow environments.

[0016] (3) The present invention realizes rapid adjustment and locking of the height of the nondestructive detector by arranging a lifting cylinder, an adjusting rod, an expansion spring, a limiting hole and a magnetic locking groove. When the driving block slides in the limiting hole, the expansion spring releases the elastic force to push the adjusting rod out, and locks the position through the adsorption force of the magnet block and the locking groove. The multi-position locking groove is designed with precision adjustment to ensure that the detector is close to the bottom surface of the floor slab. The driving block and the locking groove are locked by adsorption of the magnet block to avoid accidental unlocking due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 It is an exploded view of the overall structure of the present invention; Figure 4 It is a partial cross-sectional view of the detection tube of the present invention; Figure 5 It is a schematic diagram of the reverse plate of the present invention; Figure 6 It is a schematic diagram of a cross block of the present invention; Figure 7 It is a schematic diagram of the adjustment component of the present invention; Figure 8 for Figure 7 A partial enlarged view of middle A.

[0019] Numbers in the figure: 1. detection cylinder; 11. non-destructive detector; 12. support rod; 121. support ball; 2. rapid retraction and extension assembly; 21. retraction and extension sleeve; 22. annular disk; 23. support attachment block; 24. moving disk; 25. limit block; 26. vertical hole; 261. contraction hole; 27. compression spring; 28. reverse plate; 280. arc groove; 3. adaptive support assembly; 31. linkage gear; 32. first rack block; 33. second rack block; 34. cross groove; 35. cross block; 36. locking groove; 311. adjustment assembly; 312. lifting cylinder; 313. adjustment rod; 314. limit hole; 315. drive block; 3151. finger groove; 3152. magnet block; 316. expansion spring; 317. lock groove. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] like Figure 1-Figure 4 As shown, a retractable nondestructive testing device for floor thickness comprises a testing cylinder 1, which is in the shape of an elongated ring; a nondestructive detector 11, which is arranged at the top of the testing cylinder 1; a supporting rod 12, which is at least one and is arranged in a ring shape at the bottom of the testing cylinder 1, and the supporting rod 12 is arranged in an inclined shape with respect to the ground, and is used to support the testing cylinder 1; a quick retracting and extending component 2 , arranged on the detection tube 1, for quickly expanding and contracting the plurality of support rods 12; the quick stowage assembly 2 includes a stowage sleeve 21, which is a ring-shaped structure and is sleeved on the outside of the detection tube 1 and slidably connected; an annular disk 22, which is a ring-shaped structure and is slidably connected to the outside of the lower part of the detection tube 1, and the stowage sleeve 21 is connected to the top of the annular disk 22; a supporting attachment 23, which corresponds to the support rod 12 one by one, and one end of which is rotatably connected to the bottom of the detection tube 1, and the other end of which is rotatably connected to the middle of the support rod 12; a movable disk 24, which is fixedly mounted on the top of the stowage sleeve 21, and is slidably connected to the outside of the detection tube 1, The movable disk 24 is symmetrically provided with handle grooves; two limit blocks 25 are provided and symmetrically installed on the inner wall of the movable disk 24; two vertical holes 26 are provided and symmetrically opened in the middle of the detection tube 1, and the limit blocks 25 are slidably connected to the inner side of the vertical hole 26, and a contraction hole 261 is provided on the top of the vertical hole 26, which has an L-shaped structure, and the vertical end of the contraction hole 261 is perpendicular to the vertical hole 26 and connected to the vertical hole 26, and the horizontal end of the contraction hole 261 is parallel to the axis of the detection tube 1; there is at least one compression spring 27, which is fixedly installed between the bottom end of the detection tube 1 and the bottom wall of the annular disk 22.

[0022] It should be noted that when the device is in the retracted state, the compression spring 27 is in the stretched state, the limit block 25 is located at the horizontal end of the retracted hole 261, the support rod 12 is close to the detection tube 1, and the overall structure is compact and easy to carry and move. When the support rod 12 needs to be unfolded, the operator holds the handle groove on the movable plate 24 and lifts the movable plate 24 upward, and the limit block 25 slides from the horizontal end of the retracted hole 261 to the vertical end. Then, the movable plate 24 is rotated to make the limit block 25 enter the vertical hole 26. At this time, the compression spring 27 The spring potential energy is released, pushing the moving disk 24 and the retracting sleeve 21 to move downward along the detection tube 1, and the retracting sleeve 21 drives the annular disk 22 to move downward. The support rod 12 is gradually unfolded by the rotation of the supporting attachment block 23 to form an inclined shape, and finally supported on the ground to ensure the stability of the detection tube 1. When the support rod 12 needs to be retracted, the above steps are reversed, the limit block 25 slides back from the vertical hole 26 to the retracting hole 261, the compression spring 27 is re-stretched, and the support rod 12 is retracted to the detection tube 1 and restored to a compact state. Through the ingenious design of the retractable sleeve 21, the annular disk 22, the supporting attachment 23 and the limit block 25, the support rod 12 can be quickly deployed and retracted, which significantly reduces the operation time. The application of the compression spring 27 makes the deployment process more automated and reduces the complexity of manual operation. By setting up the rapid deployment and retraction component 2, the deployment and retraction process of the support rod 12 is greatly simplified, and the operation steps and time are reduced. It is particularly suitable for scenarios where the detection position needs to be frequently changed. The operator only needs to simply lift and turn to complete the deployment and retraction of the support rod 12, which significantly improves the overall efficiency of the detection work.

[0023] like Figure 5 As shown, the bottom of the detection cylinder 1 is installed with reverse plates 28 in a ring array, and the reverse plates 28 are arranged between the spaced support rods 12 .

[0024] It should be noted that the reverse plate 28 provides a stable force point for the operator. The operator can press the reverse plate 28 with his feet to push it to the ground, thereby assisting the expansion or contraction operation of the rapid stowage and deployment component 2. By applying force with his feet, the operator can more easily complete the expansion and contraction of the support rod 12, reducing reliance on hand strength, which is particularly suitable for work scenarios involving long-term or frequent operations.

[0025] like Figure 5 As shown, a supporting ball 121 is installed at one end of the supporting rod 12 away from the detection cylinder 1 , and an anti-slip pad with a threaded hole is provided on the bottom surface of the supporting ball 121 .

[0026] It should be noted that by setting up anti-slip pads, the friction with the ground can be effectively increased to prevent the device from sliding or shifting during the detection process. Anti-slip pads are usually made of wear-resistant materials and can withstand frequent movement and adjustment, reducing replacement frequency and maintenance costs.

[0027] like Figure 5 As shown, an arc groove 280 is opened between the spaced reverse plates 28 , and an elastic protective cover is provided on the inner side of the arc groove 280 . The spaced arc groove 280 is matched with the supporting ball member 121 .

[0028] It should be noted that the support ball 121 enters the arc groove 280 when retracted, so that the support rod 12 can fit closely with the detection tube 1, reducing the space occupied by the device in the retracted state, making it easier to carry and store. At the same time, the elastic protective cover clamps the support ball 121 to prevent the support rod 12 from shaking or loosening in the retracted state, ensuring that the device remains stable during movement or storage.

[0029] like Figure 3 , Figure 4 and Figure 6 As shown, the adaptive support assembly 3 is arranged on the detection cylinder 1, and can expand the support rod 12 at different angles according to different floor heights. The adaptive support assembly 3 includes a linkage gear 31, which is horizontally installed in the middle of the detection cylinder 1. The upper and lower inner sides of the detection cylinder 1 are respectively connected with a first rack block 32 and a second rack block 33 through a slide rail; a cross groove 34 is opened at the bottom of the detection cylinder 1, and the lower part of the second rack block 33 is fixedly connected to the top of the cross block 35; the cross block 35 is installed on the inner side of the annular disk 22 and is slidably connected to the inner side of the cross groove 34; an adjustment assembly 311 is arranged at the top of the first rack block 32, and is used to drive the nondestructive detector 11 to adjust along the floor surface, and a locking groove 36, the number of which is at least one, and is opened at the front and rear ends of the detection cylinder 1 in a linear array, and the locking groove 36 is an L-shaped hole, and the vertical end of the locking groove 36 is perpendicular to the vertical hole 26 and is connected to the vertical hole 26, and the horizontal end of the locking groove 36 is parallel to the axial direction of the detection cylinder 1.

[0030] When the support rod 12 is unfolded by using the quick stowage assembly 2, the cross block 35 on the annular disk 22 slides downward along the cross groove 34, and the cross block 35 drives the second rack block 33 to move downward synchronously. The movement of the second rack block 33 drives the linkage gear 31 to rotate, and the rotation of the linkage gear 31 drives the first rack block 32 to move upward in the opposite direction. The first rack block 32 pushes the adjustment assembly 311 and the nondestructive detector 11 to extend a certain distance from the inside of the detection tube 1. According to the floor height, the operator adjusts the deployment angle of the support rod 12 through the movable plate 24. The operator drives the movable plate 24 to move downward, and the deployment angle of the support rod 12 increases to adapt to the higher floor height, ensuring the stable support of the non-destructive detector 11; The operator drives the movable plate 24 to move upward, and the support rod 12 is deployed at a reduced angle, thereby reducing space occupation and ensuring that the device can be placed in a suitable position to avoid affecting the normal progress of the detection work; When the support rod 12 is unfolded to the desired angle, the locking groove 36 cooperates with the vertical hole 26, and the limit block 25 passes through the vertical end of the locking groove 36 and then enters its horizontal end, thereby locking the position of the support rod 12 to ensure that the device remains stable during the detection process; Through the linkage design of the linkage gear 31, the rack block and the cross groove 34, the automatic adjustment of the deployment angle of the support rod 12 is realized to adapt to different floor heights and environmental changes, and the adjustment component 311 and the non-destructive detector 11 are extended a certain distance from the inside of the detection tube 1, which significantly improves the operating efficiency.

[0031] like Figure 7 As shown, the adjustment component 311 includes: a lifting cylinder 312, which is installed on the top of the first rack block 32; an adjustment rod 313, which is slidably connected inside the lifting cylinder 312, and the non-destructive detector 11 is plugged and installed on the top of the adjustment rod 313; a limiting hole 314, which is opened on one side of the lifting cylinder 312; a driving block 315, which is installed below the adjustment rod 313 and is slidably connected inside the limiting hole 314; an expansion spring 316, which is installed below the lifting cylinder 312; a locking groove 317, which is at a horizontal end and is connected to the limiting hole 314.

[0032] It should be noted that when the adjustment component 311 and the non-destructive detector 11 extend a certain distance from the inside of the detection tube 1, the operator extends the driving block 315 from the inside of the lock slot 317, enters the limiting hole 314, and releases the expansion spring 316. The elastic force of the expansion spring 316 pushes the adjustment rod 313 to move upward, driving the non-destructive detector 11 to quickly extend to the desired position. The operator adjusts the extension length of the adjustment rod 313 by sliding the driving block 315 in the limiting hole 314 according to the floor height, thereby adjusting the height of the non-destructive detector 11. When the non-destructive detector 11 is adjusted to the desired height, the operator locks the driving block 315 in the corresponding lock slot 317 to ensure that the adjustment rod 313 and the non-destructive detector 11 remain stable during the detection process; Through the elastic force of the expansion spring 316, the adjustment rod 313 can be quickly extended, driving the non-destructive detector 11 to quickly adjust to the required height, which significantly improves the operating efficiency. The linear array design of the lock slot 317 provides multi-level height adjustment, so that the non-destructive detector 11 can accurately adapt to different floor heights and improve the detection accuracy.

[0033] like Figure 7-Figure 8 As shown, a finger groove 3151 is formed on the side of the driving block 315 facing away from the adjusting rod 313 , and a magnet block 3152 which attracts the driving block 315 is installed on the side of the locking groove 317 close to the driving block 315 .

[0034] It should be noted that, since the driving block 315 moves inside the limiting hole 314, in order to facilitate the operator to better operate the driving block 315, the present invention increases the friction between the operator's hand and the driving block 315 by setting a finger groove 3151, and by setting a magnet block 3152, the fit between the driving block 315 and its corresponding lock groove 317 can be further improved, thereby preventing the driving block 315 from detaching from the lock groove 317 due to the vibration of the floor, thereby improving the stability of the driving block 315.

[0035] The working principle of the present invention is that the retractable nondestructive testing device for floor thickness is used. When in use, in the retracted state, the compression spring 27 is in a stretched state, the limit block 25 is at the horizontal end of the retracted hole 261, the support rod 12 is tightly fitted to the detection tube 1, and the overall structure is compact and easy to carry and move. When the support rod 12 needs to be deployed, the operator can press the reverse plate 28 to the ground with his feet to assist the deployment or contraction operation of the quick stowage assembly 2. After that, the operator holds the handle groove on the movable plate 24 and lifts it upward, and the limit block 25 slides from the horizontal end of the retracted hole 261 into the vertical end , then rotate the moving disk 24 to make the limit block 25 enter the vertical hole 26. At this time, the compression spring 27 releases the elastic potential energy, pushing the moving disk 24 and the retracting sleeve 21 to move downward along the detection tube 1. The retracting sleeve 21 drives the annular disk 22 to move downward. The support rod 12 is gradually unfolded into an inclined shape with the help of the rotation of the supporting block 23, and finally firmly supported on the ground. When the support rod 12 needs to be retracted, the above steps are reversed, the limit block 25 slides back from the vertical hole 26 to the retracting hole 261, the compression spring 27 is re-stretched, and the support rod 12 returns to the detection tube 1 and restores the compact shape. When the support rod 12 is unfolded, the cross block 35 on the annular disk 22 slides downward along the cross groove 34, driving the second rack block 33 to move downward synchronously, and the second rack block 33 drives the linkage gear 31 to rotate, and the linkage gear 31 drives the first rack block 32 to move upward in the opposite direction, and the first rack block 32 pushes the adjustment assembly 311 and the nondestructive detector 11 to extend a certain distance from the inside of the detection tube 1. The operator can adjust the unfolding angle of the support rod 12 through the movable disk 24 according to the floor height. By moving the movable disk 24 downward, the unfolding angle of the support rod 12 increases to adapt to higher floors; by moving the movable disk 24 upward, the unfolding angle decreases to reduce space occupancy. When the support rod 12 is unfolded to the desired angle, the locking groove 36 cooperates with the vertical hole 26, and the limit block 25 passes through the vertical end of the locking groove 36 and then enters the horizontal end, locking the position of the support rod 12 to ensure the stability of the device during detection; When the adjustment component 311 and the non-destructive detector 11 extend a certain distance from the inside of the detection tube 1, the operator pushes the driving block 315 out of the locking groove 317 to make it enter the limiting hole 314 and release the expansion spring 316. The elastic force of the expansion spring 316 pushes the adjustment rod 313 to move upward, driving the non-destructive detector 11 to quickly reach the desired position. The operator can adjust the extension length of the adjustment rod 313 according to the floor height by sliding the driving block 315 in the limiting hole 314, thereby adjusting the height of the non-destructive detector 11. After the adjustment is completed, the driving block 315 is locked in the corresponding locking groove 317 to ensure the stability of the adjustment rod 313 and the non-destructive detector 11 during the detection process. The elastic force of the expansion spring 316 enables the adjustment rod 313 to be quickly extended, thereby improving the operating efficiency.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A retractable floor thickness non-destructive testing device, comprising a testing tube (1) in the shape of an elongated ring, characterized in that ； A non-destructive detector (11), which is arranged on the top of the detection cylinder (1); A support rod (12), the number of which is at least one and which is arranged in a ring shape at the bottom of the detection cylinder (1), the support rod (12) being arranged in an inclined shape with respect to the ground, and being used to support the detection cylinder (1); A rapid expansion and contraction assembly (2), arranged on the detection tube (1), and used for rapidly expanding and contracting the plurality of support rods (12); The adaptive support assembly (3) is arranged on the detection cylinder (1) and can expand the support rod (12) to different angles according to different floor heights.

2. A nondestructive testing device for the thickness of a retractable floor according to claim 1, characterized in that; The rapid stowage and deployment component (2) comprises: The retractable sleeve (21) is in a ring-shaped structure and is sleeved on the outside of the detection tube (1) and slidably connected thereto; The annular disk (22) is in a ring-shaped structure and is slidably connected to the lower outer side of the detection tube (1), and the retractable sleeve (21) is connected to the top of the annular disk (22); A supporting attachment block (23) corresponding to the supporting rod (12) one by one, with one end of the supporting attachment block being rotatably connected to the bottom of the detection cylinder (1) and the other end of the supporting attachment block being rotatably connected to the middle of the supporting rod (12); A movable plate (24) is fixedly mounted on the top of the retractable sleeve (21) and is slidably connected to the outside of the detection tube (1), and handle grooves are symmetrically provided on the movable plate (24); The limit blocks (25) are provided in two numbers and are symmetrically mounted on the inner side wall of the moving plate (24); Two vertical holes (26) are provided and are symmetrically opened in the middle of the detection tube (1); the limit block (25) is slidably connected inside the vertical hole (26); a contraction hole (261) is opened at the top of the vertical hole (26), and the contraction hole (261) is L-shaped; The compression spring (27), which is at least one in number, is fixedly mounted between the bottom end of the detection tube (1) and the bottom wall of the annular disk (22).

3. A nondestructive testing device for the thickness of a retractable floor according to claim 2, characterized in that; The bottom of the detection cylinder (1) is installed with reverse plates (28) in a ring array, and the reverse plates (28) are arranged between the spaced support rods (12).

4. A nondestructive testing device for the thickness of a retractable floor according to claim 2, characterized in that; A supporting ball component (121) is mounted on one end of the supporting rod (12) away from the detection cylinder (1), and an anti-slip pad with a threaded hole is provided on the bottom surface of the supporting ball component (121).

5. A nondestructive testing device for the thickness of a retractable floor according to claim 3, characterized in that; An arc-shaped groove (280) is provided between the spaced reverse plates (28), an inner side surface of the arc-shaped groove (280) is provided with an elastic protective cover, and the spaced arc-shaped groove (280) is matched with the supporting ball component (121).

6. A nondestructive testing device for the thickness of a retractable floor according to claim 1, characterized in that; The adaptive support assembly (3) comprises: A linkage gear (31) is transversely mounted in the middle of the detection cylinder (1), wherein the upper and lower inner sides of the detection cylinder (1) are respectively connected with a first rack block (32) and a second rack block (33) via slide rails; A cross groove (34) is provided below the detection cylinder (1), and the bottom of the second rack block (33) and the top of the cross block (35) are fixedly connected; An adjustment component (311), which is arranged on the top of the first rack block (32) and is used to drive the non-destructive detector (11) to adjust along the floor surface; A cross block (35) is mounted on the inner side of the annular disk (22) and is slidably connected to the inner side of the cross groove (34); The number of the locking grooves (36) is at least one and they are arranged in a linear array at the front and rear ends of the detection tube (1); the locking grooves (36) are L-shaped holes; the vertical ends of the locking grooves (36) are perpendicular to the vertical holes (26) and are connected to the vertical holes (26); and the horizontal ends of the locking grooves (36) are parallel to the axial direction of the detection tube (1).

7. A nondestructive testing device for the thickness of a retractable floor according to claim 6, characterized in that; The regulating component (311) comprises: A lifting cylinder (312) mounted on the top of the first rack block (32); An adjusting rod (313) is slidably connected to the inside of the lifting cylinder (312), and a non-destructive detector (11) is plugged and installed on the top of the adjusting rod (313); A limiting hole (314) is provided on one side of the lifting cylinder (312); A driving block (315) is installed below the adjusting rod (313) and is slidably connected to the inner side of the limiting hole (314); An expansion spring (316) mounted below the lifting cylinder (312); The locking groove (317) has a horizontal end and is in communication with the limiting hole (314).

8. A nondestructive testing device for the thickness of a retractable floor according to claim 7, characterized in that; A finger groove (3151) is provided on a side of the driving block (315) facing away from the adjusting rod (313), and a magnet block (3152) that attracts the driving block (315) is installed on a side of the locking groove (317) close to the driving block (315).

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