A building concrete strength testing device

Abstract

The present invention relates to the technical field of concrete testing equipment, and specifically to a building concrete strength testing device, including a support tube, a rebound hammer, a scheduling ring, a control button and an energy storage ring. An installation chamber is provided inside the support tube, and the upper and lower ends of the installation chamber pass through the support tube, and the rebound hammer is arranged inside the installation chamber. The present invention is provided with a rebound hammer, a scheduling ring and an energy storage ring. After the staff stores energy in the energy storage ring, the energy storage ring releases part of the rotational potential energy to drive the scheduling ring to drive the rebound hammer to move, thereby completing the strength test of the test surface. Compared with the existing rebound hammer, the present device can perform multiple tests after one energy storage is completed. After one test is completed, the rebound hammer automatically resets to a position with a preset distance from the test surface, and the staff does not need to manually move the rebound hammer until the distance between the rebound hammer and the test surface is equal to the preset distance. It is convenient and quick to use, and can significantly reduce the work intensity of the staff.

Description

Technical Field

[0001] The invention relates to the technical field of concrete testing equipment, in particular to a building concrete strength testing device. Background Art

[0002] Concrete strength testing is an important task in construction projects, and its purpose is to ensure the safety, durability and functionality of concrete components. Common testing methods include rebound method, ultrasonic method and core drilling method. When measuring concrete strength by rebound method, a handheld rebound hammer is usually used to ensure that the impact rod of the rebound hammer is vertically aligned with the test surface. Next, the staff moves the rebound hammer at a constant speed by hand so that the impact rod of the rebound hammer contacts the test surface and completely retracts into the inside of the rebound hammer. In this process, the impact hammer hits the impact rod, and the distance the impact hammer is rebounded is detected. The rebound value (ratio of the rebound distance to the initial length of the spring) is used as an indicator related to strength to infer the concrete strength.

[0003] To improve the detection accuracy, when conducting batch inspection of concrete components, the number of random inspections should not be less than thirty percent of the total number of concrete components in the same batch. For each individual concrete component, the number of measurement areas should not be less than ten, and each measurement area should be divided into sixteen measurement points. Therefore, when staff conduct strength testing on a batch of concrete components, many inspections are required and the work intensity is very high. Summary of the invention

[0004] Based on this, it is necessary to provide a building concrete strength testing device to address the problems existing in the current mechanical rebound tester, so as to solve the problem of high working intensity when the existing mechanical rebound tester performs strength testing on concrete components.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A building concrete strength detection device comprises:

[0007] A support tube, wherein a mounting chamber is provided inside the support tube, and upper and lower ends of the mounting chamber penetrate the support tube;

[0008] A rebound tester is arranged inside the installation chamber;

[0009] A scheduling ring, which is coaxially arranged on the outside of the rebound hammer, and the scheduling ring and the rebound hammer can move synchronously along the axis of the support tube and rotate relatively around the axis of the support tube;

[0010] A control button, which is elastically arranged outside the support tube. In an initial state, the control button limits the movement of the scheduling ring along the axis of the support tube;

[0011] An energy storage ring, which is sleeved on the lower part of the scheduling ring. The energy storage ring and the scheduling ring can rotate synchronously around the axis of the support tube and move relatively along the axis of the support tube;

[0012] A first elastic member is provided between the scheduling ring and the energy storage ring, and when the scheduling ring and the rebound hammer are located at the initial positions, the first elastic member is stretched;

[0013] When the energy storage ring rotates around the first rotation direction, the rotational potential energy of the energy storage ring increases;

[0014] After the control button is released, the elastic potential energy of the first elastic member is released, so that the scheduling ring moves downward by a preset distance, so that the rebound hammer completes a test, and then the energy storage ring automatically releases part of the rotational potential energy, so that the scheduling ring rotates in the second rotation direction and moves upward by a preset distance, so that the scheduling ring and the rebound hammer are both reset to the initial position;

[0015] The second handedness is opposite to the first handedness.

[0016] In one of the embodiments, a coil spring is provided between the energy storage ring and the inner circumferential wall of the support tube. When the energy storage rotates around the first rotation direction, the coil spring is tightened to increase the rotational potential energy of the energy storage ring.

[0017] In one embodiment, the outer peripheral surface of the energy storage ring is provided with an outer annular tooth groove, the support tube is provided with a mounting notch, an intermediate gear is rotatably connected in the mounting notch, and the intermediate gear is meshed with the outer annular tooth groove;

[0018] A toggle ring is rotatably arranged outside the support tube, an inner peripheral surface of the toggle ring is provided with an inner annular tooth groove, and the inner annular tooth groove is meshed with the intermediate gear.

[0019] In one embodiment, a horizontal annular groove is provided on the inner peripheral wall of the support tube, and a guide column is elastically connected to the outer peripheral surface of the scheduling ring;

[0020] When the energy storage rotates around the first rotation direction, the guide column slides circumferentially in the horizontal annular groove.

[0021] In one embodiment, a vertical slide groove is further provided on the inner peripheral wall of the support tube, the vertical slide groove extends along the axis of the support tube, and the lower end of the vertical slide groove is connected to the horizontal annular groove;

[0022] A spiral groove is also provided on the inner peripheral wall of the support tube, the lower end of the spiral groove is connected to the horizontal annular groove, and the upper end of the spiral groove is connected to the upper end of the vertical slide groove;

[0023] The groove depth of the spiral groove is greater than the groove depth of the horizontal annular groove;

[0024] The guide column can slide between the horizontal ring groove, the vertical slide groove and the spiral groove;

[0025] A guide step is provided at the junction of the spiral groove and the horizontal ring groove. The guide step is configured so that when the guide column rotates around the second rotation direction, the guide column can automatically slide from the horizontal ring groove to the spiral groove under the action of the guide step.

[0026] In one embodiment, the control button includes a hinge plate and a stop pin, one end of the hinge plate is provided with a waist-shaped slide groove, the stop pin is hinged to the end of the hinge plate provided with the waist-shaped slide groove, and the hinge shaft is slidably connected in the waist-shaped slide groove, and the other end of the hinge plate is elastically connected to the outer peripheral wall of the support tube;

[0027] The support tube is provided with a mounting hole, the mounting hole is connected with the vertical slide groove, the stop pin is slidably connected in the mounting hole, and the end of the stop pin away from the hinge plate can slide along the mounting hole into the vertical slide groove;

[0028] In the initial state, the stop pin stops at the lower end of the guide column to limit the guide column from sliding downward along the vertical slide groove;

[0029] After the control button is released, the hinge plate drives the stop pin to move along the mounting hole in a direction away from the vertical slide slot, so that the stop pin no longer restricts the guide column from sliding downward along the vertical slide slot.

[0030] In one of the embodiments, the housing portion of the rebound hammer is provided with a connecting ring;

[0031] A synchronization ring is also provided inside the support tube. The synchronization ring and the scheduling ring can move synchronously along the axis of the support tube and rotate relatively around the axis of the support tube. The synchronization ring is elastically connected to a plurality of stop blocks in the circumferential direction. The stop blocks can move radially along the connecting ring. The inner side surface of the stop ring has a stop groove. The plurality of stop blocks can move radially along the connecting ring so that the stop groove circumferentially encloses a stop ring groove.

[0032] When the connecting ring slides into the inner part of the stop ring groove, the connecting ring and the synchronizing ring move synchronously along the axis of the supporting tube.

[0033] In one of the embodiments, a plurality of damping hydraulic rods are provided in the installation chamber, and the plurality of damping hydraulic rods are evenly distributed along the circumference of the support tube, the axis of the damping hydraulic rod is parallel to the axis of the support tube, the fixed end of the damping hydraulic rod is arranged on the inner circumferential wall of the support tube, and the telescopic end of the damping hydraulic rod is arranged at the upper end of the synchronous ring.

[0034] In one embodiment, a plurality of sliding holes are formed at equal intervals in the circumferential direction on the lower end surface of the support tube, the plurality of sliding holes correspond to the plurality of damping hydraulic rods one by one, a sensing rod is slidably connected in the sliding hole, and a sensing component is provided between the sensing rod and the damping hydraulic rod;

[0035] When the plurality of sensing rods have not all slid into the corresponding sliding holes, the sensing assembly limits the extension or shortening of the damping hydraulic rod;

[0036] When all of the multiple sensing rods slide into the corresponding sliding holes, the sensing assembly stops restricting the extension or shortening of the damping hydraulic rod.

[0037] In one embodiment, the sensing component includes a hydraulic oil chamber, a plurality of first hydraulic oil circuits and a plurality of second hydraulic oil circuits, the plurality of first hydraulic oil circuits and the plurality of second hydraulic oil circuits correspond to a plurality of damping hydraulic rods one by one, a piston ring is slidably connected in the hydraulic oil chamber, hydraulic oil is stored in the hydraulic oil chamber below the piston ring, one end of the first hydraulic oil circuit is communicated with the lower part of the hydraulic oil chamber, and one end of the second hydraulic oil circuit is communicated with the inside of the cylinder body of the damping hydraulic cylinder;

[0038] A notch is provided on the damping rod, and when all the multiple sensing rods slide into the corresponding sliding holes, the multiple first hydraulic oil circuits and the multiple second hydraulic oil circuits are connected one by one.

[0039] The beneficial effects of the present invention are:

[0040] The present invention is provided with a rebound hammer, a scheduling ring and an energy storage ring. After the staff stores energy in the energy storage ring, the energy storage ring releases part of the rotational potential energy to drive the scheduling ring to drive the rebound hammer to move, thereby completing the strength test of the test surface. Compared with the existing rebound hammer, the present device can perform multiple tests after one energy storage is completed. After one test is completed, the rebound hammer automatically resets to a position with a preset distance from the test surface. The staff does not need to manually move the rebound hammer until the distance between the rebound hammer and the test surface is equal to the preset distance. The use is convenient and quick, and can significantly reduce the work intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is an overall schematic diagram of a building concrete strength detection device of the present invention;

[0042] Figure 2 A cross-sectional view of a building concrete strength detection device according to the present invention;

[0043] Figure 3 This is a schematic diagram of the internal structure of a support cylinder in a building concrete strength detection device of the present invention;

[0044] Figure 4 It is a structural schematic diagram of a rebound tester in a building concrete strength testing device of the present invention;

[0045] Figure 5 A half-section axonometric diagram of a support tube in a building concrete strength detection device of the present invention;

[0046] Figure 6 for Figure 5 A schematic diagram of the enlarged structure in the middle;

[0047] Figure 7 for Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0048] Figure 8 for Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0049] Fig. 9 for Figure 5 Schematic diagram of the enlarged structure at D in the middle;

[0050] Fig.10 for Figure 5 Schematic diagram of the enlarged structure at E in the middle;

[0051] Fig.11 It is a structural schematic diagram of a synchronization ring in a building concrete strength detection device of the present invention;

[0052] Fig.12 The present invention is a schematic diagram of the structure of a scheduling loop in a building concrete strength detection device.

[0053] in:

[0054] 100, support cylinder; 110, installation chamber; 120, installation notch; 130, intermediate gear; 140, toggle ring; 141, inner annular tooth groove; 150, horizontal annular groove; 160, vertical slide groove; 170, spiral groove; 180, guide step; 190, installation hole; 200, rebound tester; 210, connecting ring; 300, scheduling ring; 310, guide column; 400, control button; 410, hinged plate; 411, waist-shaped slide groove; 420, stop pin ; 430, first compression spring; 500, energy storage ring; 510, first elastic member; 520, coil spring; 530, outer annular tooth groove; 600, synchronization ring; 610, stop block; 620, second compression spring; 630, stop ring groove; 700, damping hydraulic rod; 810, sliding hole; 820, sensing rod; 821, notch; 900, sensing assembly; 910, hydraulic oil chamber; 920, piston ring; 930, first hydraulic oil circuit; 940, second hydraulic oil circuit. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0056] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] like Figure 1-Figure 12As shown, a building concrete strength detection device includes a support tube 100, a rebound tester 200, a scheduling ring 300, a control button 400 and an energy storage ring 500. The support tube 100 is provided with an installation chamber 110, and the upper and lower ends of the installation chamber 110 pass through the support tube 100. The rebound tester 200 is arranged inside the installation chamber 110. The scheduling ring 300 is coaxially arranged on the outside of the rebound tester 200. The scheduling ring 300 and the rebound tester 200 can move synchronously along the axis of the support tube 100 and rotate relatively around the axis of the support tube 100. The control button 400 is elastically arranged on the outside of the support tube 100. In the initial state, the control button 400 limits the scheduling ring 300 from moving along the axis of the support tube 100. The energy storage ring 500 is sleeved on the lower part of the scheduling ring 300. The energy storage ring 500 and the scheduling ring 300 can The scheduling ring 300 and the energy storage ring 500 can rotate synchronously around the axis of the support tube 100 and move relatively along the axis of the support tube 100. A first elastic member 510 is provided between the scheduling ring 300 and the energy storage ring 500. When the scheduling ring 300 and the rebound hammer 200 are in the initial position, the first elastic member 510 is stretched. When the energy storage ring 500 rotates around the first rotation direction, the rotational potential energy of the energy storage ring 500 increases. After releasing the control button 400, the elastic potential energy of the first elastic member 510 is released, so that the scheduling ring 300 moves downward by a preset distance, so that the rebound hammer 200 completes a detection, and then the energy storage ring 500 automatically releases part of the rotational potential energy, so that the scheduling ring 300 rotates around the second rotation direction and moves downward by a preset distance, so that the scheduling ring 300 and the rebound hammer 200 are both reset to the initial position, and the second rotation direction is opposite to the first rotation direction.

[0059] When in use, the staff needs to store energy in the energy storage ring 500 first. Specifically, the staff rotates the energy storage ring 500 around the first rotation direction for a preset number of times so that the rotational potential energy of the energy storage ring 500 accumulates to a preset value. Then, the strength test of the concrete component can be carried out (taking the detection surface of the concrete component located below the device as an example for explanation). Specifically, the staff holds the support cylinder 100 so that the axis of the support cylinder 100 is perpendicular to the detection surface of the concrete component to be tested. Then the staff releases the control button 400. At this time, the elastic potential energy of the first elastic member 510 is released. Under the elastic force of the first elastic member 510, the scheduling ring 300 and the rebound tester 200 move downward by a preset distance synchronously, so that the impact rod of the rebound tester 200 contacts the detection surface and shrinks to the limit position inside the rebound tester 200 after contact. At this point, a strength test is completed. At this time, the staff can record the strength value displayed on the display unit of the rebound tester 200. Next, the energy storage ring 500 automatically releases part of the rotational potential energy, so that the scheduling ring 300 rotates around the second rotation direction and moves upward by a preset distance , so that the scheduling ring 300 and the rebound hammer 200 are reset to the initial position, then the staff moves the support cylinder 100 to the next detection position, and then presses the button on the rebound hammer 200 to reset the impact rod. Next, similarly, after the axis of the support cylinder 100 is perpendicular to the detection surface of the concrete component to be tested, the control button 400 is released. At this time, under the elastic force of the first elastic member 510, the scheduling ring 300 and the rebound hammer 200 are synchronously moved downward by a preset distance, so that the impact rod of the rebound hammer 200 contacts the detection surface and is After contact, the inside of the rebound tester 200 shrinks to the extreme position, and the second strength test is completed. By repeating the above operation, the strength test of multiple positions to be tested on the test surface of the tested component can be completed. In this process, when the remaining rotational potential energy of the energy storage ring 500 is not enough to drive the scheduling ring 300 and the rebound tester 200 to reset to the initial position, the staff continues to rotate the energy storage ring 500 and store energy in the energy storage ring 500, so that the rotational potential energy of the energy storage ring 500 accumulates to the preset value, and then continue the strength test. Compared with the existing rebound tester 200, this device can perform multiple tests after one energy storage is completed. After one test is completed, the rebound tester 200 automatically resets to the position of the preset distance from the test surface, and the staff does not need to manually move the rebound tester 200 until the distance between the rebound tester 200 and the test surface is equal to the preset distance. It is convenient and quick to use, and can significantly reduce the work intensity of the staff.

[0060] In a further embodiment, Figure 3 and Fig.12As shown, a coil spring 520 is arranged between the energy storage ring 500 and the inner circumferential wall of the support tube 100, that is, one end of the coil spring 520 is arranged on the inner circumferential wall of the support tube 100, and the other end of the coil spring 520 is arranged on the energy storage ring 500. When the energy storage ring 500 rotates around the first rotation direction, the coil spring 520 is tightened to increase the rotational potential energy of the energy storage ring 500.

[0061] When storing energy, the staff rotates the energy storage ring 500 around the first rotation direction to gradually tighten the coil spring 520, thereby increasing the rotational potential energy of the energy storage ring 500. When the coil spring 520 is fully tightened, the energy storage ring 500 cannot continue to rotate around the first rotation direction. At this time, the number of rotations of the energy storage ring 500 is the preset number of rotations, and the rotational potential energy of the energy storage ring 500 is accumulated to the preset value.

[0062] In a further embodiment, Figure 3 and Figure 7 As shown, the outer circumference of the energy storage ring 500 is provided with an outer annular tooth groove 530, and the support tube 100 is provided with a mounting groove 120, and an intermediate gear 130 is rotatably connected inside the mounting groove 120, and the intermediate gear 130 is meshed with the outer annular tooth groove 530, and the external rotation of the support tube 100 is provided with a toggle ring 140, and the inner circumference of the toggle ring 140 is provided with an inner annular tooth groove 141, and the inner annular tooth groove 141 is meshed with the intermediate gear 130.

[0063] When in use, the staff fixes the support tube 100 with one hand and rotates the toggle ring 140 around the first rotation direction with the other hand. The toggle ring 140 drives the intermediate gear 130 to rotate through the inner annular tooth groove 141, and the intermediate gear 130 drives the energy storage ring 500 to rotate through the outer annular tooth groove 530, thereby making the energy storage ring 500 rotate around the first rotation direction, so that the coil spring 520 gradually tightens to store energy, thereby increasing the rotational potential energy of the energy storage ring 500.

[0064] It should be supplemented that, in order to limit the movement of the toggle ring 140 along the axis of the support tube 100, a limiting ring groove should be opened at a corresponding position on the outer circumference of the support tube 100 so that the toggle ring 140 can be rotatably connected in the limiting ring groove.

[0065] In a further embodiment, Figure 3 and Figure 5 As shown, a horizontal annular groove 150 is opened on the inner circumferential wall of the support tube 100, and a guide column 310 is elastically connected to the outer circumferential surface of the scheduling ring 300. When the energy storage ring 500 rotates around the first rotation direction, the guide column 310 slides circumferentially in the horizontal annular groove 150.

[0066] When the energy storage ring 500 rotates around the first rotation direction, under the guidance of the guide column 310 and the horizontal ring groove 150 , the energy storage ring 500 drives the scheduling ring 300 to rotate synchronously.

[0067] In a further embodiment, Figure 5 and Figure 8 As shown, a vertical slide groove 160 is also provided on the inner circumferential wall of the support cylinder 100, and the vertical slide groove 160 extends along the axis of the support cylinder 100. The lower end of the vertical slide groove 160 is connected to the horizontal annular groove 150. A spiral groove 170 is also provided on the inner circumferential wall of the support cylinder 100. The lower end of the spiral groove 170 is connected to the horizontal annular groove 150, and the upper end of the spiral groove 170 is connected to the upper end of the vertical slide groove 160. The groove depth of the spiral groove 170 is greater than the groove depth of the horizontal annular groove 150. The guide column 310 can slide among the horizontal annular groove 150, the vertical slide groove 160 and the spiral groove 170. A guide step 180 is provided at the junction of the spiral groove 170 and the horizontal annular groove 150. The guide step 180 is configured so that when the scheduling ring 300 rotates around the second rotation direction, the guide column 310 can automatically slide from the horizontal annular groove 150 to the spiral groove 170 under the action of the guide step 180.

[0068] When the staff releases the control button 400, the control button 400 no longer restricts the movement of the scheduling ring 300 along the axis of the support tube 100. Under the elastic force of the first elastic member 510, the guide column 310 slides downward along the vertical slide groove 160, that is, the scheduling ring 300 and the rebound tester 200 move downward synchronously by a preset distance, so that the rebound tester 200 completes a strength test. After the strength test is completed, the guide column 310 slides from the vertical slide groove 160 to the horizontal annular groove 150. At this time, the vertical slide groove 160 no longer restricts the guide column 310 from rotating around the axis of the support tube 100, so the rotational potential energy of the coil spring 520 is released to allow the guide column 310 to rotate along the horizontal annular groove 150 around the second rotation direction. When the guide column 310 rotates to the guide step 180, under the guiding action of the guide step 180, the guide column 310 moves from the horizontal ring groove 150 to the spiral groove 170, so that the guide column 310, the scheduling ring 300 and the rebound hammer 200 synchronously rotate along the spiral groove 170 and move upward by a preset distance, so that the guide column 310 moves from the lower end of the spiral groove 170 to the upper end of the spiral groove 170, so that the first elastic member 510 is stretched, and when the guide column 310 moves to the upper end of the spiral groove 170 (also the upper end of the vertical slide groove 160), the guide column 310 is restricted by the vertical slide groove 160 again and cannot rotate. At this time, the rotational potential energy of the coil spring 520 cannot be further released, and at this time the scheduling ring 300 and the rebound hammer 200 are also reset to the initial position.

[0069] Next, the staff moves the support tube 100 to the next testing position. Similarly, after the staff releases the control button 400, the control button 400 no longer restricts the movement of the scheduling ring 300 along the axis of the support tube 100. Under the elastic force of the first elastic member 510, the guide column 310 slides downward along the vertical slide groove 160, that is, the scheduling ring 300 and the rebound tester 200 move downward synchronously by a preset distance, so that the rebound tester 200 completes a strength test. After the strength test is completed, the guide column 310 slides from the vertical slide groove 160 to the horizontal annular groove 150. At this time, the vertical slide groove 160 no longer restricts the guide column 310 from rotating around the axis of the support tube 100, so the rotational potential energy of the coil spring 520 is released to allow the guide column 310 to rotate along the horizontal annular groove 150 around the second rotation direction. When the guide column 310 rotates to the guide step 1 80, under the guiding action of the guide step 180, the guide column 310 moves from the horizontal ring groove 150 to the spiral groove 170, so that the guide column 310, the scheduling ring 300 and the rebound tester 200 synchronously rotate along the spiral groove 170 and move upward by a preset distance, so that the guide column 310 moves from the lower end of the spiral groove 170 to the upper end of the spiral groove 170, so that the first elastic member 510 is stretched, and when the guide column 310 moves to the upper end of the spiral groove 170 (also the upper end of the vertical slide groove 160), the guide column 310 is again restricted by the vertical slide groove 160 and cannot rotate. At this time, the rotational potential energy of the coil spring 520 cannot continue to be released. At this time, the scheduling ring 300 and the rebound tester 200 are also reset to the initial position. By repeating this operation, the strength detection of multiple positions to be tested of the component to be tested can be completed.

[0070] It should be supplemented that the guide post 310 is elastically connected to the scheduling ring 300 in order to adapt to the depth changes of the horizontal ring groove 150 and the spiral groove 170 , so that the guide post 310 can smoothly switch positions between the horizontal ring groove 150 and the spiral groove 170 .

[0071] In a further embodiment, Figure 3 and Figure 6As shown, the control button 400 includes a hinge plate 410 and a stop pin 420, one end of the hinge plate 410 is provided with a waist-shaped slide groove 411, the stop pin 420 is hinged to one end of the hinge plate 410 provided with the waist-shaped slide groove 411, and the hinge shaft is slidably connected in the waist-shaped slide groove 411, and the other end of the hinge plate 410 is elastically connected to the outer peripheral wall of the support tube 100. Specifically, a first compression spring 430 is provided on the outer peripheral wall of the support tube 100, and the end of the first compression spring 430 away from the support tube 100 is fixedly connected to the hinge plate 410, and the support tube 100 is provided with a mounting hole 190, and the mounting hole 190 is provided. 0 is connected to the vertical slide groove 160, the stop pin 420 is slidably connected in the mounting hole 190, and the end of the stop pin 420 away from the hinge plate 410 can slide along the mounting hole 190 into the vertical slide groove 160. In the initial state, the stop pin 420 stops at the lower end of the guide column 310 to limit the guide column 310 from sliding downward along the vertical slide groove 160. After releasing the control button 400, the hinge plate 410 drives the stop pin 420 to move along the mounting hole 190 in the direction away from the vertical slide groove 160, so that the stop pin 420 no longer limits the guide column 310 from sliding downward along the vertical slide groove 160.

[0072] When releasing the control button 400, specifically, the staff presses the hinge plate 410 and releases the hinge plate 410 after the first compression spring 430 is compressed to the maximum compression amount. In this process, the hinge plate 410 pulls the stop pin 420 to move along the mounting hole 190 in the direction away from the vertical slide groove 160. When the stop pin 420 moves out of the vertical slide groove 160, the stop pin 420 no longer restricts the movement of the guide column 310. At this time, under the elastic force of the first elastic member 510, the guide column 310, the scheduling ring 300 and the rebound instrument 200 synchronously move downward along the vertical slide groove 160 by a preset distance, so that the guide column 310 moves from the upper end of the vertical slide groove 160 to the lower end of the vertical slide groove 160.

[0073] When the guide column 310 moves from the lower end to the upper end (i.e., the upper end of the vertical slide groove 160) along the spiral groove 170, the guide column 310 is stopped by the stop pin 420 and cannot move downward along the vertical slide groove 160. After the staff moves the support cylinder 100 to the next detection position, the staff presses the hinge plate 410 again so that the first compression spring 430 is compressed to the maximum compression amount and then released, so that the guide column 310, the scheduling ring 300 and the rebound tester 200 synchronously move downward along the vertical slide groove 160 a preset distance, completing the second strength test. The above operation can be repeated to complete the strength test of multiple detection positions on the detection surface.

[0074] In a further embodiment, Figure 2 and Fig.11As shown, the outer shell of the rebound tester 200 is provided with a connecting ring 210, and a synchronization ring 600 is also provided inside the support tube 100. The synchronization ring 600 and the scheduling ring 300 can move synchronously along the axis of the support tube 100 and rotate relatively around the axis of the support tube 100. The synchronization ring 600 is elastically connected with a plurality of stop blocks 610 in the circumferential direction. Specifically, a second compression spring 620 is provided on the inner circumferential surface of the synchronization ring 600, and the end of the second compression spring 620 away from the synchronization ring 600 is fixedly connected to the stop block 610. The stop block 610 can move radially along the connecting ring 210, and the inner side surface of the stop ring is provided with a stop groove. The plurality of stop blocks 610 can move radially along the connecting ring 210 so that the stop groove is circumferentially enclosed to form a stop ring groove 630. When the connecting ring 210 slides to the inside of the stop ring groove 630, the connecting ring 210 and the synchronization ring 600 move synchronously along the axis of the support tube 100.

[0075] During installation, the staff fixes the support tube 100 with one hand and inserts the rebound tester 200 into the support tube 100 from the upper end of the support tube 100 with the other hand and pulls the rebound tester 200 downward along the axis of the support tube 100, so that the connecting ring 210 gradually pushes away the stop block 610 and slides into the stop ring groove 630. At this time, under the limiting action of the stop ring groove 630, the rebound tester 200 can move synchronously with the synchronization ring 600 along the axis of the support tube 100.

[0076] During disassembly, the staff fixes the support tube 100 with one hand and continues to press the rebound tester 200 downward from the upper end of the support tube 100 with the other hand, so that the connecting ring 210 gradually pushes away the stopping block 610 and disengages from the stopping ring groove 630. At this time, the staff can inspect or maintain the rebound tester 200.

[0077] In a further embodiment, Figure 3 As shown, a plurality of damping hydraulic rods 700 are provided in the installation chamber 110, and the plurality of damping hydraulic rods 700 are evenly distributed along the circumference of the support tube 100, and the axes of the damping hydraulic rods 700 are parallel to the axis of the support tube 100, and the fixed ends of the damping hydraulic rods 700 are arranged on the inner circumferential wall of the support tube 100, and the telescopic ends of the damping hydraulic rods 700 are arranged at the upper end of the synchronous ring 600.

[0078] The damping hydraulic rod 700 is provided to ensure that the rebound hammer 200 moves toward the tested surface of the tested concrete member and the impact rod of the rebound hammer 200 shrinks into the inside of the rebound hammer 200 at a uniform speed as possible, so as to make the test result more accurate.

[0079] In a further embodiment, Figure 3 and Fig. 9As shown, a plurality of sliding holes 810 are provided at equal intervals in the circumferential direction on the end surface of the lower end of the support cylinder 100. The plurality of sliding holes 810 correspond one-to-one to the plurality of damping hydraulic rods 700. A sensing rod 820 is slidably connected in the sliding hole 810. A sensing component 900 is provided between the sensing rod 820 and the damping hydraulic rod 700. When the plurality of sensing rods 820 have not all slid into the corresponding sliding holes 810, the sensing component 900 limits the extension or shortening of the damping hydraulic rod 700. When the plurality of sensing rods 820 have all slid into the corresponding sliding holes 810, the sensing component 900 stops limiting the extension or shortening of the damping hydraulic rod 700.

[0080] This arrangement is to prevent the axis of the support tube 100 from being perpendicular to the detection surface during the strength test. If the axis of the support tube 100 is not perpendicular to the detection surface when the support tube 100 contacts the detection surface, the multiple sensing rods 820 will not all slide into the corresponding sliding holes 810, and the sensing assembly 900 will limit the extension of the damping hydraulic rod 700. At this time, even if the staff releases the control button 400, since the telescopic end of the damping hydraulic rod 700 is fixedly connected to the synchronization ring 600, the scheduling ring 300 will not move downward along the axis of the support tube 100. Only when the axis of the support tube 100 is perpendicular to the detection, the multiple sensing rods 820 will all slide into the corresponding sliding holes 810. At this time, the sensing assembly 900 cancels the restriction on the extension of the damping hydraulic rod 700. At this time, the staff releases the control button 400, and the synchronization ring 600, the scheduling ring 300 and the rebound tester 200 can move downward along the axis of the support tube 100 synchronously, thereby completing the strength test of the detection surface.

[0081] In a further embodiment, Figure 5 , Fig. 9 and Fig.10 As shown, the sensing component 900 includes a hydraulic oil chamber 910, multiple first hydraulic oil circuits 930 and multiple second hydraulic oil circuits 940. The multiple first hydraulic oil circuits 930 and the multiple second hydraulic oil circuits 940 all correspond to the multiple damping hydraulic rods 700 one by one. A piston ring 920 is slidably connected in the hydraulic oil chamber 910. Hydraulic oil is stored in the hydraulic oil chamber 910 below the piston ring 920. One end of the first hydraulic oil circuit 930 is connected to the lower part of the hydraulic oil chamber 910, and one end of the second hydraulic oil circuit 940 is connected to the inside of the cylinder body of the damping hydraulic rod 700. A notch 821 is opened on the damping hydraulic rod 700. When the multiple sensing rods 820 all slide into the corresponding sliding holes 810, the multiple first hydraulic oil circuits 930 and the multiple second hydraulic oil circuits 940 are all connected one by one.

[0082] If the axis of the support cylinder 100 is not perpendicular to the detection when the support cylinder 100 contacts the detection surface, the multiple sensing rods 820 will not all slide into the corresponding sliding holes 810, and there will be sensing rods 820 that have not moved to the preset position. The notch 821 on the sensing rod 820 cannot be connected to the corresponding first hydraulic oil circuit 930 and second hydraulic oil circuit 940, so the damping hydraulic rod 700 corresponding to the sensing rod 820 cannot be extended. At this time, even if the staff releases the control button 400, since the telescopic end of the damping hydraulic rod 700 is fixedly connected to the synchronizer ring 600, The scheduling ring 300 will not move downward along the axis of the support tube 100. Only when the axis of the support tube 100 is perpendicular to the detection surface, multiple sensing rods 820 will all slide into the corresponding sliding holes 810. At this time, all sensing rods 820 are moved to the preset positions, and all first hydraulic oil circuits 930 and all second hydraulic oil circuits 940 are connected accordingly. At this time, the staff releases the control button 400, and the synchronization ring 600, the scheduling ring 300 and the rebound tester 200 can move downward along the axis of the support tube 100 synchronously, thereby completing the strength detection of the detection surface.

[0083] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A building concrete strength detection device, characterized in that: include: A support tube, wherein a mounting chamber is provided inside the support tube, and upper and lower ends of the mounting chamber penetrate the support tube; A rebound tester is arranged inside the installation chamber; A scheduling ring, which is coaxially arranged on the outside of the rebound hammer, and the scheduling ring and the rebound hammer can move synchronously along the axis of the support tube and rotate relatively around the axis of the support tube; A control button, which is elastically arranged outside the support tube. In an initial state, the control button limits the movement of the scheduling ring along the axis of the support tube; An energy storage ring, which is sleeved on the lower part of the scheduling ring. The energy storage ring and the scheduling ring can rotate synchronously around the axis of the support tube and move relatively along the axis of the support tube; A first elastic member is provided between the scheduling ring and the energy storage ring, and when the scheduling ring and the rebound hammer are located at the initial positions, the first elastic member is stretched; When the energy storage ring rotates around the first rotation direction, the rotational potential energy of the energy storage ring increases; After the control button is released, the elastic potential energy of the first elastic member is released, so that the scheduling ring moves downward by a preset distance, so that the rebound hammer completes a test, and then the energy storage ring automatically releases part of the rotational potential energy, so that the scheduling ring rotates in the second rotation direction and moves upward by a preset distance, so that the scheduling ring and the rebound hammer are both reset to the initial position; The second rotation direction is opposite to the first rotation direction; a coil spring is arranged between the energy storage ring and the inner peripheral wall of the support tube, and when the energy storage rotates around the first rotation direction, the coil spring is tightened to increase the rotation potential energy of the energy storage ring; The outer circumferential surface of the energy storage ring is provided with an outer annular tooth groove, and the support tube is provided with a mounting notch, in which an intermediate gear is rotatably connected, and the intermediate gear is meshed with the outer annular tooth groove; The support tube is provided with a toggle ring for rotation outside, and the inner circumference of the toggle ring is provided with an inner annular tooth groove, which meshes with the intermediate gear; a horizontal annular groove is provided on the inner circumferential wall of the support tube, and a guide column is elastically connected to the outer circumference of the scheduling ring; When the energy storage rotates around the first rotation direction, the guide column slides circumferentially in the horizontal annular groove; a vertical slide groove is also provided on the inner circumferential wall of the support tube, the vertical slide groove extends along the axis of the support tube, and the lower end of the vertical slide groove is connected to the horizontal annular groove; A spiral groove is also provided on the inner peripheral wall of the support tube, the lower end of the spiral groove is connected to the horizontal annular groove, and the upper end of the spiral groove is connected to the upper end of the vertical slide groove; The groove depth of the spiral groove is greater than the groove depth of the horizontal annular groove; The guide column can slide between the horizontal ring groove, the vertical slide groove and the spiral groove; A guide step is provided at the intersection of the spiral groove and the horizontal annular groove, and the guide step is configured so that when the control column rotates around the second rotation direction, the guide column can automatically slide from the horizontal annular groove to the spiral groove under the action of the guide step; the control button includes a hinge plate and a stop pin, one end of the hinge plate is provided with a waist-shaped slide groove, the stop pin is hinged to one end of the hinge plate with the waist-shaped slide groove, and the hinge shaft is slidably connected in the waist-shaped slide groove, and the other end of the hinge plate is elastically connected to the outer peripheral wall of the support tube; The support tube is provided with a mounting hole, the mounting hole is connected with the vertical slide groove, the stop pin is slidably connected in the mounting hole, and the end of the stop pin away from the hinge plate can slide along the mounting hole into the vertical slide groove; In the initial state, the stop pin stops at the lower end of the guide column to limit the guide column from sliding downward along the vertical slide groove; After the control button is released, the hinge plate drives the stop pin to move along the mounting hole in a direction away from the vertical slide slot, so that the stop pin no longer restricts the guide column from sliding downward along the vertical slide slot.

2. A building concrete strength detection device according to claim 1, characterized in that: The shell of the rebound tester is provided with a connecting ring; A synchronization ring is also provided inside the support tube. The synchronization ring and the scheduling ring can move synchronously along the axis of the support tube and rotate relatively around the axis of the support tube. The synchronization ring is elastically connected to a plurality of stop blocks in the circumferential direction. The stop blocks can move radially along the connecting ring. The inner side surface of the stop ring has a stop groove. The plurality of stop blocks can move radially along the connecting ring so that the stop groove circumferentially encloses a stop ring groove. When the connecting ring slides into the inner part of the stop ring groove, the connecting ring and the synchronizing ring move synchronously along the axis of the supporting tube.

3. A building concrete strength detection device according to claim 2, characterized in that: A plurality of damping hydraulic rods are arranged in the installation chamber, and the plurality of damping hydraulic rods are evenly distributed along the circumference of the support tube, the axis of the damping hydraulic rod is parallel to the axis of the support tube, the fixed end of the damping hydraulic rod is arranged on the inner circumferential wall of the support tube, and the telescopic end of the damping hydraulic rod is arranged on the upper end of the synchronous ring.

4. A building concrete strength detection device according to claim 3, characterized in that: The lower end surface of the support tube is provided with a plurality of sliding holes at equal intervals in the circumferential direction, the plurality of sliding holes correspond to the plurality of damping hydraulic rods one by one, a sensing rod is slidably connected in the sliding hole, and a sensing component is provided between the sensing rod and the damping hydraulic rod; When the multiple sensing rods have not all slid into the corresponding sliding holes, the sensing assembly limits the extension or shortening of the damping hydraulic rod; When all of the multiple sensing rods slide into the corresponding sliding holes, the sensing assembly stops restricting the extension or shortening of the damping hydraulic rod.

5. A building concrete strength detection device according to claim 4, characterized in that: The sensing assembly includes a hydraulic oil chamber, a plurality of first hydraulic oil circuits and a plurality of second hydraulic oil circuits, the plurality of first hydraulic oil circuits and the plurality of second hydraulic oil circuits all correspond to a plurality of damping hydraulic rods one by one, a piston ring is slidably connected in the hydraulic oil chamber, hydraulic oil is stored in the hydraulic oil chamber below the piston ring, one end of the first hydraulic oil circuit is communicated with the lower part of the hydraulic oil chamber, and one end of the second hydraulic oil circuit is communicated with the inside of the cylinder body of the damping hydraulic cylinder; A notch is provided on the damping rod, and when all the multiple sensing rods slide into the corresponding sliding holes, the multiple first hydraulic oil circuits and the multiple second hydraulic oil circuits are connected one by one.

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