A seamless floor strength testing device

Abstract

This application relates to a seamless floor strength testing device, belonging to the field of seamless floor strength testing devices. The device includes a housing, a first hook unit slidably disposed within the housing, a guide rod, and an impact rod. The impact rod extends downward through the housing. An impact hammer is slidably disposed on the guide rod. The impact hammer, after sliding, strikes the impact rod. A first hook groove and a second hook groove are respectively formed at the top and bottom of the impact hammer. A second hook unit is sleeved on the guide rod. An impact spring connects the second hook unit to the bottom end of the housing. The first hook unit is used to hook the first hook groove. The second hook unit is used to hook the second hook groove. An indicator unit is slidably disposed on the housing. The indicator unit abuts against the top wall of the impact hammer. An image sensor is disposed at the indicator unit. The image sensor is used to monitor the indicator unit. This application has the technical effect of improving the accuracy of seamless floor strength testing.

Description

Technical Field

[0001] This application relates to the technical field of seamless floor strength testing equipment, and in particular to a seamless floor strength testing equipment. Background Technology

[0002] Seamless flooring, due to its advantages such as high flatness, strong wear resistance, and easy cleaning, is widely used in industrial plants, warehousing centers, underground parking garages, and other scenarios. Its strength directly affects the safety and service life of use, so strength testing is a core part of construction acceptance and operation and maintenance. Current mainstream testing methods include rebound hammer testing and core drilling testing. While rebound hammer testing is convenient to operate, it is greatly affected by the surface smoothness and carbonization depth of the flooring, resulting in limited testing accuracy. Core drilling testing, although highly accurate, is a destructive test that can damage the flooring structure and requires secondary repair after testing, increasing costs and construction time.

[0003] Existing rebound hammers obtain strength data by impacting the ground with an impact rod. However, after the impact hammer strikes the impact rod, the rebound is pulled by the impact spring, causing the rebound data to be too small, resulting in poor accuracy of the rebound hammer. At the same time, the indicator unit relies heavily on manual reading, which is prone to visual errors, and lacks a real-time monitoring mechanism, making it difficult to meet the needs of efficient and accurate testing.

[0004] Patent (202510865288.7) discloses a concrete seamless floor strength testing device, including a mounting frame, a first moving drive component, a first connecting platform, and a dynamic rebound hammer; the first moving drive component is installed on the upper end of the mounting frame; the first connecting platform is installed on the driving end of the first moving drive component, and the first moving drive component controls the first connecting platform to move up and down; three dynamic rebound hammers are installed on the first connecting platform; it also includes a second moving drive component, a second connecting platform, and cylinders; the second moving drive component is installed on the first connecting platform; the second connecting platform is installed on the driving end of the second moving drive component; three cylinders are installed on the second connecting platform; the above patent uses multiple sets of rebound hammers for testing to achieve comparison of multiple data; however, after the impact hammer of the rebound hammer itself strikes the impact rod, it is pulled by the impact spring during rebound, resulting in a smaller rebound data and a problem of low accuracy.

[0005] Regarding the aforementioned technologies, the inventors believe that there is a deficiency in the low accuracy of existing seamless floor strength testing. Summary of the Invention

[0006] To address the aforementioned technical problems, this application provides a seamless floor strength testing device.

[0007] This application provides a seamless floor strength testing device, which adopts the following technical solution:

[0008] A seamless floor strength testing device includes a housing, a first hook unit slidably disposed within the housing, a guide rod, and an impact rod. The first hook unit, the guide rod, and the impact rod are connected sequentially from top to bottom along the length of the housing. The impact rod penetrates downward through the housing. An impact hammer is slidably disposed on the guide rod. The impact hammer, after sliding, strikes the impact rod. A first hook groove and a second hook groove are respectively formed at the top and bottom of the impact hammer. A second hook unit is sleeved on the guide rod. An impact spring connects the second hook unit to the bottom end of the housing. An indicator unit is slidably disposed on the housing. The indicator unit abuts against the top wall of the impact hammer. An image sensor is disposed at the indicator unit. The image sensor is used to monitor the indicator unit.

[0009] The first hook unit and the second hook unit each have a degree of freedom to move radially along the impact hammer; the first hook unit is used to hook the first hook groove; the second hook unit is used to hook the second hook groove.

[0010] By adopting the above technical solution, a second hook unit is set on the outer periphery of the guide rod. The second hook unit hooks onto the second hook groove, connecting the impact spring and the impact hammer to ensure the normal operation of the impact hammer. When the impact hammer strikes the impact rod, the first hook unit disengages from the second hook groove, allowing the impact hammer to be driven entirely by the reaction force from the impact rod. This makes the data displayed at the indicator unit more accurate, greatly improving the precision of the equipment. Furthermore, it reduces the number of times the impact spring is stretched, thereby increasing the service life of the impact spring. The image sensor monitors the indicator unit that abuts against the top wall of the impact hammer in real time, replacing manual reading, avoiding visual errors, and realizing automated and accurate acquisition of detection data, thus improving detection efficiency.

[0011] Preferably, the indicating unit includes an indicating block and a spring; the indicating block is slidably disposed on the housing; one end of the spring is connected to the indicating block, and the other end extends downward at an angle; the angled end of the spring is used to abut against the top wall of the impact hammer.

[0012] Preferably, the second hook unit includes a connecting ring, two arc-shaped spring pieces wrapped around the outer periphery of the connecting ring, and a plurality of hooks evenly arranged on the two arc-shaped spring pieces; the connecting ring is sleeved on the guide rod; one end of each of the two arc-shaped spring pieces is fixed to the connecting ring, and the other end is a free end; the hooks are used to hook the second hook groove.

[0013] By adopting the above technical solution, the coaxial sleeve structure of the connecting ring and the guide rod ensures that the second hook unit is precisely aligned with the second hook groove of the impact hammer; the multiple evenly distributed hook parts, together with the encircling design of the two arc-shaped clips, can form multiple points of uniform contact with the second hook groove, avoid stress concentration at a single contact point, improve the locking strength during hooking, and prevent displacement during the pre-tightening stage of the impact hammer.

[0014] Preferably, the second hook unit further includes a trigger rod; the trigger rod is disposed at the bottom of the housing; the trigger rod is used to abut against the free ends of the two sets of arc-shaped spring pieces.

[0015] By adopting the above technical solution, the trigger rod can abut against the free ends of the two arc-shaped spring pieces when the impact hammer strikes the impact rod, and squeeze the two arc-shaped spring pieces to the outside of the connecting ring, so that the hook and hanger part is disengaged from the second hook groove, thus realizing the effect of the second hook and hanger unit automatically disengaging from the impact hammer at a fixed point.

[0016] Preferably, an auxiliary calibration rod is slidably disposed on the housing along its radial direction; one end of the auxiliary calibration rod has an inclined surface; the inclined surface of the auxiliary calibration rod is in contact with the side of the spring piece.

[0017] By adopting the above technical solution, the auxiliary calibration rod can assist in calibrating the angle of the spring, ensuring that the spring can be stably moved when the impact hammer rebounds, and that the indicating unit can work stably.

[0018] Preferably, the housing is provided with a linkage unit; the linkage unit includes an active rod, a drive block, a transmission rod, and a first elastic element; the active rod is slidably disposed on the trigger rod; the drive block is disposed on the connecting ring; one end of the active rod abuts against the bottom end of the drive block; the middle part of the transmission rod is rotatably disposed on the housing; one end of the transmission rod abuts against the end of the auxiliary calibration rod away from the spring plate, and the other end abuts against the active rod; both ends of the first elastic element are respectively connected to the housing and the end of the transmission rod near the auxiliary calibration rod.

[0019] By adopting the above technical solution, when the impact hammer strikes the impact rod, a small portion of the spring force of the impact spring can be transmitted to the auxiliary calibration rod through the drive block, the active rod, and the transmission rod. A calibration is performed before the impact hammer moves the spring, ensuring that the impact hammer stably pushes the indicator unit to move, thus improving the smoothness of equipment monitoring.

[0020] Preferably, multiple sets of counterweight components are evenly arranged around the periphery of the housing; each counterweight component includes a counterweight block, a connecting steel rope, and a clamping unit; the housing has a counterweight cavity; the counterweight block is slidably disposed in the counterweight cavity; a through hole is provided on the housing; one end of the connecting steel rope is connected to the counterweight block, and the other end passes through the through hole and is connected to the counterweight block through the clamping unit.

[0021] By adopting the above technical solution, the impact hammer is calibrated by setting a counterweight. When the equipment is testing on the ground, the counterweight is connected to the impact hammer through a snap-fit ​​unit; when testing on a vertical wall, the counterweight is disconnected from the impact hammer; when the impact hammer is testing on the ground and striking the impact rod, the counterweight counteracts the impact force caused by the impact hammer's own weight; the force of the impact hammer striking the impact rod is the same when testing on the ground and the wall; and the test data of the equipment under different working conditions are standardized.

[0022] Preferably, the snap-fit ​​unit includes a snap-fit ​​seat and a snap-fit ​​block; the snap-fit ​​seat is connected to the connecting steel rope; the side wall of the snap-fit ​​seat abuts against the through hole; two snap hooks are rotatably disposed at the bottom of the snap-fit ​​seat; a second elastic element is disposed between the two snap hooks; the snap-fit ​​block is rotatably disposed on the top wall of the impact hammer; two snap-fit ​​grooves are formed on the snap-fit ​​block; the two snap hooks respectively cooperate with the two snap-fit ​​grooves.

[0023] By adopting the above technical solution, the locking block is rotated so that when testing the ground, the locking groove is aligned with the locking hook, and the locking hook automatically engages into the locking groove when the impact hammer reaches its highest point. When testing the wall, the locking block is rotated so that the locking hook and the locking groove are misaligned, preventing the locking hook from engaging into the locking groove. This achieves the effect of adjustable connection between the counterweight and the impact hammer under different working conditions.

[0024] Preferably, a counterweight cam is coaxially provided on the snap-fit ​​block.

[0025] By adopting the above technical solution, the counterweight part of the counterweight cam can always face the ground, so that when the housing is adjusted from a horizontal state to a vertical state, the counterweight wheel drives the locking block to rotate automatically in real time, realizing the self-adjustment effect of the locking unit.

[0026] Preferably, an adjusting plate is slidably disposed inside the counterweight cavity; the adjusting plate abuts against the side wall of the counterweight block; an adjusting screw is threadedly connected to the housing; and the end of the adjusting screw is rotatably connected to the adjusting plate.

[0027] By adopting the above technical solution, by setting an adjustment plate to abut against the counterweight block, and by rotating the adjustment screw to adjust the abutment force between the counterweight block and the adjustment plate, the impact hammer can accurately balance the reaction force of the impact hammer when testing the ground by adjusting the adjustment plate.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. A second hook unit is installed on the outer periphery of the guide rod. This second hook unit hooks onto a second hook groove, connecting the impact spring to the impact hammer to ensure its normal operation. When the impact hammer strikes the impact rod, the first hook unit disengages from the second hook groove, allowing the impact hammer to be propelled entirely by the reaction force from the impact rod. This results in more accurate data displayed on the indicating unit, significantly improving the equipment's precision. Furthermore, it reduces the number of times the impact spring is stretched, thus extending its lifespan. An image sensor monitors the indicating unit in real-time against the top wall of the impact hammer, replacing manual readings, avoiding visual errors, and achieving automated and precise data acquisition, thereby improving testing efficiency.

[0030] 2. When the impact hammer strikes the impact rod, the trigger rod abuts against the free ends of the two arc-shaped spring pieces and pushes the two arc-shaped spring pieces outward towards the connecting ring, causing the hook to disengage from the second hook groove, thus achieving the effect of the second hook unit automatically disengaging from the impact hammer at a fixed point.

[0031] 3. The impact hammer is calibrated by setting a counterweight. When the equipment is testing on a flat surface, the counterweight is connected to the impact hammer via a snap-fit ​​unit. When testing a vertical wall, the counterweight is disconnected from the impact hammer. This ensures that when the impact hammer strikes the impact rod on the flat surface, the counterweight counteracts the impact force caused by the impact hammer's own weight. This ensures that the force of the impact hammer striking the impact rod is the same when testing on the flat surface and the wall. This standardizes the test data of the equipment under different working conditions. The counterweight part of the counterweight cam can always face the ground. When the housing is adjusted from a horizontal to a vertical position, the counterweight wheel drives the snap-fit ​​block to rotate automatically in real time, realizing the self-adjustment effect of the snap-fit ​​unit. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a seamless floor strength testing device.

[0033] Figure 2 yes Figure 1 A magnified view of part A in the image.

[0034] Figure 3 This is a schematic diagram of the connecting ring in the embodiment.

[0035] Figure 4 This is a schematic diagram of the trigger rod in the embodiment.

[0036] Figure 5 yes Figure 1 A magnified view of part B in the image.

[0037] Figure 6 This is a schematic diagram of the counterweight component in the embodiment.

[0038] Figure 7 This is a schematic diagram of the card block structure in the embodiment.

[0039] Figure 8 This is a schematic diagram of the card holder structure in the embodiment.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Housing; 11. First hook unit; 12. Guide rod; 13. Impact rod; 14. Counterweight cavity; 15. Adjusting plate; 16. Adjusting screw; 17. Connecting seat; 18. Through hole;

[0042] 2. Impact hammer; 21. First hook groove; 22. Second hook groove;

[0043] 3. Second hook unit; 31. Connecting ring; 32. Arc-shaped spring; 33. Hook and hanger; 34. Trigger rod;

[0044] 4. Impact spring;

[0045] 5. Indicator unit; 51. Indicator block; 52. Spring clip;

[0046] 6. Auxiliary calibration rod;

[0047] 7. Linkage unit; 71. Driving rod; 72. Drive block; 73. Transmission rod; 74. First elastic element;

[0048] 8. Counterweight assembly; 81. Counterweight block; 82. Connecting steel rope; 83. Clip unit; 831. Clip seat; 832. Clip block; 8321. Clip groove; 833. Clip hook; 834. Second elastic element; 835. Counterweight cam. Detailed Implementation

[0049] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0050] This application discloses a seamless floor strength testing device. (Refer to...) Figure 1-2The device includes a housing 1, a first hook unit 11, a second hook unit 3, a guide rod 12, and an impact rod 13 slidably disposed within the housing 1; the first hook unit 11, the guide rod 12, and the impact rod 13 are connected sequentially from top to bottom along the length of the housing 1; the first hook unit 11 and the second hook unit 3 each have a degree of freedom to move radially along the impact hammer 2; the impact rod 13 penetrates downward through the housing 1; the impact hammer 2 is slidably disposed on the guide rod 12; the impact hammer 2 is used to strike the impact rod 13 after sliding; the top and bottom of the impact hammer 2 are respectively provided with a first hook groove 21 and a second hook groove 22. Hook groove 22; second hook unit 3 is sleeved on the outer periphery of guide rod 12; first hook unit 11 is used to hook the first hook groove 21; second hook unit 3 is used to hook the second hook groove 22; impact spring 4 is connected between the second hook unit 3 and the bottom end of housing 1; a connecting seat 17 can be provided at the bottom end of housing 1; impact spring 4 is provided between connecting seat 17 and second hook unit 3; an indicator unit 5 is slidably provided on housing 1; indicator unit 5 is used to abut against the top wall of impact hammer 2; an image sensor is provided at indicator unit 5; the image sensor is used to monitor indicator unit 5.

[0051] Specifically, the indicator unit 5 includes an indicator block 51 and a spring piece 52; the indicator block 51 is slidably disposed on the housing 1; one end of the spring piece 52 is connected to the indicator block 51, and the other end extends downward at an angle.

[0052] Under normal circumstances, the impact rod 13 protrudes from the housing 1, and the first hook unit 11 and the second hook unit 3 are hooked onto the first hook groove 21 and the second hook groove 22, respectively. During monitoring, the housing 1 is pushed, and the impact rod 13 is squeezed into the housing 1. When the first hook unit 11 is pushed to the top of the housing 1, it disengages from the first hook groove 21, at which point the buffer spring is in a stretched state. The impact hammer 2 is pulled and struck on the impact rod 13. The force on the impact rod 13 acts on the ground, absorbs and reacts on the impact rod 13 and is transmitted to the impact hammer 2. The impact hammer 2 rebounds and pushes the indicator unit 5 to move. The image sensor monitors the movement of the indicator unit 5. A display screen can be set on the housing 1. The data output terminal of the image sensor is connected to the data input terminal of the display screen, and the data monitored by the image sensor is transmitted to the display screen.

[0053] It should be noted that the first hook unit 11 includes a hook, a seat, a return spring, and an unlocking rod; the seat is slidably disposed within the housing 1 and connected to the guide rod 12; the two ends of the return spring are respectively connected to the seat and the top wall of the housing 1; the hook is generally Z-shaped, with its middle part rotatably disposed on the seat; under normal circumstances, the end of the hook with the hook can hook onto the first hook groove 21; the unlocking rod is disposed at the top of the housing 1; when the first hook unit 11 is located at the top of the housing 1, the unlocking rod abuts against the end of the hook without the hook; and the hook... The hook abuts and rotates, disengaging from the buffer hammer; the top of the housing 1 has an inclined guide groove; when the first hook unit 11 has not reached the top, the impact hammer 2 does not contact the indicator unit 5; when the first hook unit 11 reaches the top of the housing 1, it moves along the inclined guide groove, causing the guide rod 12 to deflect towards the indicator unit 5; at this time, when the impact hammer 2 slides down, it will squeeze the spring piece 52 and will not push the indicator block 51 to move; when the impact hammer 2 rebounds, the inclined end of the spring piece 52 is used to abut against the top wall of the impact hammer 2 and push the indicator block 51 to move.

[0054] Reference Figure 3 and Figure 4 The second hook unit 3 includes a connecting ring 31, a trigger rod 34, two arc-shaped spring pieces 32 wrapped around the outer periphery of the connecting ring 31, and a plurality of hooks 33 evenly arranged on the two arc-shaped spring pieces 32; the connecting ring 31 is sleeved on the guide rod 12; one end of each of the two arc-shaped spring pieces 32 is fixed on the connecting ring 31, and the other end is a free end; under normal circumstances, the hooks 33 are used to hook the second hook groove 22; the trigger rod 34 is located at the bottom of the housing 1; when the impact hammer 2 strikes the impact rod 13, the trigger rod 34 is used to abut against the free ends of the two sets of arc-shaped spring pieces 32 and press the two sets of arc-shaped spring pieces 32 toward the outside of the connecting ring 31, so that the hooks 33 are disengaged from the second hook groove 22.

[0055] Reference Figure 1 and Figure 5A linkage unit 7 is provided on the housing 1. The linkage unit 7 includes an active rod 71, a drive block 72, a transmission rod 73, and a first elastic element 74. The active rod 71 is slidably mounted on the trigger rod 34. The drive block 72 is mounted on the connecting ring 31. The bottom wall of the drive block 72 has a first guide arc surface. One end of the active rod 71 has a second guide slope. When the impact hammer 2 strikes the impact rod 13, one end of the active rod 71 abuts against the bottom end of the drive block 72, that is, the first guide arc surface abuts against the second guide arc surface. The middle part of the transmission rod 73 is rotatably mounted on the housing 1. When the impact hammer 2 moves downward, it squeezes the spring piece 52 and makes the angle between the spring piece 52 and the indicator block 51 smaller. After repeated pressure, the spring piece 52 is prone to fatigue. Therefore, it is slidably mounted on the housing 1 along its radial direction. An auxiliary calibration rod 6 is provided; one end of the auxiliary calibration rod 6 has an inclined surface; the inclined surface of the auxiliary calibration rod 6 is in contact with the side of the spring piece 52; the auxiliary calibration rod 6 can push the spring piece 52 and keep the included angle between the spring piece 52 and the indicator block 51 standard; one end of the transmission rod 73 abuts against the end of the auxiliary calibration rod 6 away from the spring piece 52, and the other end abuts against the active rod 71. After the active rod 71 slides, it can push the transmission rod 73 to rotate, thereby pushing the auxiliary calibration rod 6 to move; so that the auxiliary calibration rod 6 can correct the spring piece 52 once before the impact hammer 2 touches the end of the spring piece 52 each time; the first elastic element 74 is a spring, and the two ends of the first elastic element 74 are respectively connected to the housing 1 and the end of the transmission rod 73 near the auxiliary calibration rod 6; so that the transmission rod 73 can automatically reset.

[0056] Reference Figures 6 to 8 Multiple sets of counterweight components 8 are evenly arranged around the periphery of the housing 1; each counterweight component 8 includes a counterweight block 81, a connecting steel rope 82, and a clamping unit 83; the housing 1 has a counterweight cavity 14; the counterweight block 81 is slidably disposed in the counterweight cavity 14; an adjusting plate 15 is slidably disposed in the counterweight cavity 14; the adjusting plate 15 abuts against the side wall of the counterweight block 81; an adjusting screw 16 is threadedly connected to the housing 1; specifically, after the adjusting screw 16 passes through the housing 1, its end is rotatably connected to the adjusting plate 15; a through-hole is provided on the housing 1. Hole 18; one end of the connecting steel rope 82 is connected to the counterweight 81, and the other end passes through the through hole 18 and is connected to the counterweight 81 through the snap-fit ​​unit 83; when testing the ground, the snap-fit ​​unit 83 connects the counterweight 81 to the impact hammer 2; when testing the vertical wall, the counterweight 81 is disconnected from the impact hammer 2; when the impact hammer 2 is testing the ground and striking the impact rod 13, the counterweight 81 can offset the striking force brought by the weight of the impact hammer 2 itself; so that when testing the ground and the wall, the force of the impact hammer 2 striking the impact rod 13 is the same.

[0057] Specifically, the snap-fit ​​unit 83 includes a snap-fit ​​seat 831 and a snap-fit ​​block 832; the snap-fit ​​seat 831 is connected to the connecting steel rope 82; the side wall of the snap-fit ​​seat 831 abuts against the through hole 18; two snap hooks 833 are rotatably arranged at the bottom of the snap-fit ​​seat 831; a second elastic element 834 is arranged between the two snap hooks 833; the snap-fit ​​block 832 is rotatably arranged on the top wall of the impact hammer 2; a counterweight cam 835 is coaxially arranged on the snap-fit ​​block 832; the counterweight part of the counterweight cam 835 can always face the ground, so that the housing 1 can be adjusted from a horizontal state to a vertical state. During operation, the counterweight wheel drives the locking block to rotate automatically; the locking block 832 has two locking slots 8321; two hooks 833 respectively engage with the two locking slots 8321; when testing the ground, the locking slots 8321 are aligned with the hooks 833, and when the impact hammer 2 reaches its highest point, the hooks 833 automatically engage in the slots; when testing the wall, the locking block 832 is rotated to make the hooks 833 and the slots misaligned, so that the hooks 833 cannot engage in the slots, thus achieving the effect of adjustable connection between the counterweight block 81 and the impact hammer 2 under different working conditions.

[0058] The working principle of the seamless floor strength testing device in this application is as follows:

[0059] When the equipment is in standby mode, the impact rod 13 naturally protrudes from the bottom of the housing 1, and the hook head of the Z-shaped hook of the first hook unit 11 hooks into the first hook groove 21 on the top of the impact hammer 2. Due to its own elasticity, the arc-shaped spring 32 of the second hook unit 3 causes the evenly distributed hooks 33 to be embedded into the second hook groove 22 at the bottom of the impact hammer 2. At this time, the impact spring 4 is in a natural extension and contraction state. One end of the spring 52 of the indicator unit 5 is fixed to the indicator block 51, and the other end is tilted downward. The impact hammer 2 does not contact the spring 52, and the image sensor is in standby monitoring state. If it is a ground detection condition, the hook 833 of the locking unit 83 corresponds to the locking groove 8321 of the locking block 832 under the gravity guidance of the counterweight cam 835. The counterweight 81 is linked to the impact hammer 2 through the connecting steel rope 82. In the wall detection condition, the hook 833 and the locking groove 8321 are misaligned and separated.

[0060] When the test is started, the operator pushes the housing 1 to make the impact rod 13 fit against the ground surface, and continuously applies force to squeeze the impact rod 13 into the housing 1. During this process, the first hook unit 11 connected to the guide rod 12 moves upward synchronously with the guide rod 12, the impact spring 4 is stretched to accumulate elastic potential energy, and the impact hammer 2 moves synchronously with the guide rod 12 due to the double locking of the first and second hook units 3. When the first hook unit 11 moves upward to the top of the housing 1, the unlocking rod at the top of the housing 1 abuts against the hookless end of the hook, pushing the hook to rotate around the base, causing its hook end to disengage from the first hook groove 21; at the same time, the guide rod 12 deflects along the inclined guide groove at the top of the housing 1 and moves closer to the indicator unit 5.

[0061] After the first hook unit 11 is unlocked, the impact hammer 2 descends rapidly along the guide rod 12 under the elastic restoring force of the impact spring 4, striking the bottom of the impact rod 13. The impact rod 13 transmits the striking force to the ground surface, and the ground generates a reaction force due to its own strength. The reaction force is fed back to the impact hammer 2 through the impact rod 13, causing it to bounce upward. During the rebound, the top wall of the impact hammer 2 abuts against the downward-inclined spring piece 52 of the indicator unit 5, pushing the spring piece 52 to drive the indicator block 51 to slide along the housing 1. The image sensor captures the sliding displacement of the indicator block 51 in real time and transmits the data to the display screen on the housing 1. The displacement data indirectly reflects the magnitude of the ground reaction force, i.e., the ground strength. It should be noted that although the impact hammer 2 squeezes the spring piece 52 when it strikes downward, the tilt angle of the spring piece 52 disperses the force along the tangential direction and will not push the indicator block 51 to move, thus avoiding interference with the detection data.

[0062] At the moment the impact hammer 2 strikes the impact rod 13, the trigger rod 34 at the bottom of the housing 1 abuts against the free end of the arc-shaped spring piece 32 of the second hook unit 3, squeezing the arc-shaped spring piece 32 outward towards the connecting ring 31, causing the hook 33 to disengage from the second hook groove 22, thus unlocking the second hook unit 3. Simultaneously, the active rod 71 on the trigger rod 34 abuts against the first guide arc surface of the drive block 72 on the connecting ring 31 through the second guide arc surface, pushing the active rod 71 to slide, causing the transmission rod 73, which is rotated and connected to the housing 1 in the middle, to deflect. The other end of the transmission rod 73 pushes the auxiliary calibration rod 6 to move radially along the housing 1. The inclined surface of the auxiliary calibration rod 6 abuts against the side of the spring piece 52, correcting the angle between the spring piece 52 and the indicator block 51 to the standard state, avoiding fatigue deformation of the spring piece 52 from affecting the monitoring accuracy. After the test is completed, the first elastic element 74 pulls the transmission rod 73 to reset, and all components return to their initial state, ready for the next test.

[0063] When switching to wall testing, rotate the locking block 832 on the top wall of the impact hammer 2 to misalign the locking groove 8321 with the hook 833 of the locking seat 831, disconnecting the counterweight block 81 from the impact hammer 2 and preventing gravity from affecting the vertical impact force. When returning to ground testing, the counterweight cam 835 always faces the ground due to gravity, driving the locking block 832 to rotate and align the locking groove 8321 with the hook 833. When the impact hammer 2 rises to its highest point, the hook 833 automatically engages the locking groove 8321, and the counterweight block 81 counteracts the weight of the impact hammer 2, ensuring consistent striking force under different working conditions and improving the versatility of testing.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A seamless floor strength detection apparatus characterized by: The device includes a housing (1), a first hook unit (11) slidably disposed within the housing (1), a guide rod (12), and an impact rod (13); the first hook unit (11), the guide rod (12), and the impact rod (13) are connected sequentially from top to bottom along the length of the housing (1); the impact rod (13) extends downward through the housing (1); an impact hammer (2) is slidably disposed on the guide rod (12); the impact hammer (2) is used to strike the impact rod (13) after sliding; the impact... The hammer (2) has a first hook groove (21) and a second hook groove (22) at its top and bottom, respectively; a second hook unit (3) is sleeved on the guide rod (12); an impact spring (4) is connected between the second hook unit (3) and the bottom end of the housing (1); an indicator unit (5) is slidably arranged on the housing (1); the indicator unit (5) is used to abut against the top wall of the impact hammer (2); an image sensor is provided at the indicator unit (5); the image sensor is used to monitor the indicator unit (5); The first hook unit (11) and the second hook unit (3) each have a degree of freedom to move radially along the impact hammer (2); the first hook unit (11) is used to hook the first hook groove (21); the second hook unit (3) is used to hook the second hook groove (22); The second hook unit (3) includes a connecting ring (31), two arc-shaped spring pieces (32) wrapped around the outer periphery of the connecting ring (31), and a plurality of hooks (33) evenly arranged on the two arc-shaped spring pieces (32); the connecting ring (31) is sleeved on the guide rod (12); one end of each of the two arc-shaped spring pieces (32) is fixed on the connecting ring (31), and the other end is a free end; the hooks (33) are used to hook the second hook groove (22); The second hook unit (3) also includes a trigger rod (34); the trigger rod (34) is located at the bottom of the housing (1); when the impact hammer (2) strikes the impact rod (13), the trigger rod (34) is used to abut against the free ends of the two sets of arc-shaped spring pieces (32) and press the two sets of arc-shaped spring pieces (32) toward the outside of the connecting ring (31); causing the hook (33) to disengage from the second hook groove (22).

2. A seamless floor strength detection apparatus according to claim 1, wherein: The indicator unit (5) includes an indicator block (51) and a spring piece (52); the indicator block (51) is slidably disposed on the housing (1); one end of the spring piece (52) is connected to the indicator block (51), and the other end extends downward at an angle; the angled end of the spring piece (52) is used to abut against the top wall of the impact hammer (2).

3. A seamless floor strength detection apparatus according to claim 2, wherein: An auxiliary calibration rod (6) is slidably disposed on the housing (1) along its radial direction; one end of the auxiliary calibration rod (6) has an inclined surface; the inclined surface of the auxiliary calibration rod (6) is in contact with the side of the spring piece (52).

4. A seamless floor strength detection apparatus according to claim 3, wherein: A linkage unit (7) is provided on the housing (1); the linkage unit (7) includes an active rod (71), a drive block (72), a transmission rod (73) and a first elastic element (74); the active rod (71) is slidably disposed on the trigger rod (34); the drive block (72) is disposed on the connecting ring (31); one end of the active rod (71) abuts against the bottom end of the drive block (72); the middle part of the transmission rod (73) is rotatably disposed on the housing (1); one end of the transmission rod (73) abuts against the end of the auxiliary calibration rod (6) away from the spring piece (52), and the other end abuts against the active rod (71); the two ends of the first elastic element (74) are respectively connected to the housing (1) and the end of the transmission rod (73) near the auxiliary calibration rod (6).

5. The apparatus of claim 1, wherein: Multiple sets of counterweight components (8) are evenly arranged around the periphery of the housing (1); each counterweight component (8) includes a counterweight block (81), a connecting steel rope (82), and a snap-fit ​​unit (83); the housing (1) has a counterweight cavity (14); the counterweight block (81) is slidably disposed in the counterweight cavity (14); the housing (1) has a through hole (18); one end of the connecting steel rope (82) is connected to the counterweight block (81), and the other end passes through the through hole (18) and is connected to the counterweight block (81) through the snap-fit ​​unit (83).

6. The seamless floor strength testing device according to claim 5, characterized in that: The snap-fit ​​unit (83) includes a snap-fit ​​seat (831) and a snap-fit ​​block (832); the snap-fit ​​seat (831) is connected to the connecting steel rope (82); the side wall of the snap-fit ​​seat (831) abuts against the through hole (18); two snap hooks (833) are rotatably provided at the bottom of the snap-fit ​​seat (831); a second elastic element (834) is provided between the two snap hooks (833); the snap-fit ​​block (832) is rotatably provided on the top wall of the impact hammer (2); two snap-fit ​​grooves (8321) are provided on the snap-fit ​​block (832); the two snap hooks (833) respectively cooperate with the two snap-fit ​​grooves (8321).

7. The seamless floor strength testing device according to claim 6, characterized in that: A counterweight cam (835) is coaxially mounted on the snap-fit ​​block (832).

8. The seamless floor strength testing device according to claim 5, characterized in that: An adjusting plate (15) is slidably disposed inside the counterweight cavity (14); the adjusting plate (15) abuts against the side wall of the counterweight block (81); an adjusting screw (16) is threadedly connected to the housing (1); the end of the adjusting screw (16) is rotatably connected to the adjusting plate (15).

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