Concrete strength detection device capable of automatically climbing column

Abstract

The utility model provides a concrete strength detection device capable of automatically climbing a column, which comprises an outer support frame, an inner support frame and a plurality of supporting rods, the wall climbing mechanism is arranged on the inner side of the outer supporting frame and used for climbing in the axial direction of the concrete column structure so as to climb to a preset core detection area; the strength detection assembly is arranged on the outer supporting frame and used for detecting the multiple concrete strength detection points at the same time. According to the utility model, the wall climbing mechanism climbs along the axial direction of the concrete column body structure so as to climb to a preset core detection area, so that the problem that the elevation of the beam bottom and the column top is relatively high and manual detection needs to use climbing equipment can be effectively solved, the column is automatically climbed, and time and labor are saved; a plurality of concrete strength detection points are detected at the same time through the strength detection assembly, the detection efficiency is greatly improved, and detection of the concrete strength of the beam-column junction area is achieved.

Description

Technical Field

[0001] This utility model relates to the field of concrete strength testing technology, and more specifically, to a concrete strength testing device that can automatically climb columns. Background Technology

[0002] Concrete testing equipment is a measuring device used to evaluate the quality and performance of concrete structures. The rebound method is the most commonly used testing method. It estimates the compressive strength of concrete by measuring the restoring force of the instantaneous elastic deformation generated when the concrete surface is struck, and it is a non-destructive testing method.

[0003] When pouring concrete, according to the standard "Code for Construction of Concrete Structures" (GB 50666-2011), if the concrete grade of the column is one level higher than that of the beam and slab concrete, the design unit must confirm before the same grade of concrete can be used at the beam-column junction. If the column concrete is two levels higher than that of the beam and slab concrete, separation measures must be taken at the junction. Therefore, the concrete strength at the beam-column junction is crucial. When conducting concrete strength testing, because the beam-column junction is at a higher elevation, ladders or other climbing equipment are required, posing safety hazards and reducing testing efficiency. Utility Model Content

[0004] In view of this, this utility model proposes a concrete strength testing device that can automatically climb columns, aiming to solve the problems of safety hazards and low testing efficiency in existing concrete strength testing at beam-column junctions.

[0005] This utility model proposes an automatic column-climbing concrete strength testing device, which includes: an outer support frame for surrounding a concrete column structure; a wall-climbing mechanism disposed inside the outer support frame for climbing along the axial direction of the concrete column structure to reach a preset core testing area; and a strength testing component disposed on the outer support frame for simultaneously testing multiple concrete strength testing points.

[0006] Furthermore, in the aforementioned concrete strength testing device that can automatically climb columns, the outer support frame is a telescopic support frame to adapt to concrete column structures with different cross-sections.

[0007] Furthermore, in the aforementioned concrete strength testing device capable of automatically climbing columns, the outer support frame includes: two first telescopic frames and two second telescopic frames; wherein, the two first telescopic frames are arranged side by side and spaced apart, the two second telescopic frames are disposed between the two first telescopic frames, and the two ends of the two second telescopic frames are respectively connected to the two corresponding ends of the two first telescopic frames, and the two first telescopic frames and the two second telescopic frames form a rectangular structure.

[0008] Furthermore, in the aforementioned concrete strength testing device capable of automatically climbing columns, the first telescopic frame and / or the second telescopic frame include: a fixed support plate; two telescopic outer shells sleeved on both ends of the fixed support plate, and both telescopic outer shells are slidably connected to the fixed support plate along its length direction for telescopic adjustment to adjust the overall length of the combination of the fixed support plate and the two telescopic outer shells.

[0009] Furthermore, in the aforementioned concrete strength testing device capable of automatically climbing columns, the telescopic housing is connected to a drive assembly for driving the telescopic housing to extend and retract.

[0010] Furthermore, in the aforementioned concrete strength testing device capable of automatically climbing columns, the driving component includes: a rotating center wheel for rotating under external force; and a transmission component having two power output ends, the power input end of which is connected to the rotating center wheel, and the two power output ends of which are respectively connected to the two telescopic housings, for converting the rotation of the rotating center wheel into the opposite or opposite movement of the two telescopic housings.

[0011] Furthermore, in the aforementioned concrete strength testing device capable of automatically climbing columns, the transmission component is a winch structure, comprising: a winch wheel disposed on the rotating center wheel; two connecting ropes, one end of each rope disposed on the winch wheel, and the other ends extending in opposite directions and respectively connected to the two telescopic housings, for winding the two connecting ropes onto the winch wheel for winding when the winch wheel rotates with the rotating center wheel, thereby pulling the two telescopic housings to move towards each other; and two elastic tension members, corresponding to the two telescopic housings respectively, disposed between the corresponding telescopic housing and the fixed support plate, with both ends of the two elastic tension members respectively connected to the corresponding telescopic housing and the fixed support plate, for elastic deformation when the connecting ropes pull the two telescopic housings to move in opposite directions, and for applying force to the two telescopic housings when the connecting ropes are released, so that the two telescopic housings move towards each other.

[0012] Furthermore, in the aforementioned concrete strength testing device capable of automatically climbing columns, the transmission component is a winch structure, comprising: a winch wheel, mounted on the rotating center wheel; two connecting ropes, each with one end mounted on the winch wheel and the other ends extending in opposite directions and connected to the two telescopic housings respectively, for winding the two connecting ropes onto the winch wheel when the winch wheel rotates with the rotating center wheel, thereby pulling the two telescopic housings to move towards each other, and releasing the two connecting ropes from the winch wheel; and an elastic tension member, with both ends connected to the two telescopic housings respectively, for elastically deforming when the connecting ropes pull the two telescopic housings to move in opposite directions, and applying a force to the two telescopic housings when the connecting ropes are released, so that the two telescopic housings move towards each other.

[0013] Furthermore, in the aforementioned concrete strength testing device that can automatically climb columns, the first telescopic frame and the second telescopic frame are connected by a flexible connector.

[0014] Furthermore, in the aforementioned concrete strength testing device capable of automatically climbing columns, the flexible connector includes: a first connector, a second connector, and a damper; wherein, the two ends of the damper are respectively connected to the first connector and the second connector, and the first connector and the second connector are respectively used to connect the first telescopic frame and the second telescopic frame to achieve a flexible connection between the two.

[0015] The concrete strength testing device provided by this utility model can automatically climb columns. It uses a wall-climbing mechanism to climb along the axial direction of the concrete column structure to reach the preset core testing area. This effectively overcomes the problem of manual testing requiring climbing equipment due to the high elevation of the beam bottom and column top. Automatic column climbing saves time and effort. Simultaneous testing of multiple concrete strength testing points using strength testing components greatly improves testing efficiency. It enables the testing of concrete strength at the beam-column junction, which is crucial for controlling the strength of concrete components. Monitoring and testing this area effectively controls the construction quality of the structure and solves the problems of safety hazards and low efficiency in existing beam-column junction concrete strength testing. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of the concrete strength testing device capable of automatically climbing columns provided in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the inner sidewall of the outer support frame provided in an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the wall-climbing mechanism provided in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the strength detection component provided in an embodiment of the present utility model;

[0021] Figure 5 This is a structural schematic diagram of the first telescopic frame provided in an embodiment of the present utility model;

[0022] Figure 6 A schematic diagram of the structure of the first driving component provided in an embodiment of this utility model;

[0023] Figure 7 This is a structural schematic diagram of the second telescopic frame provided in an embodiment of the present utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the flexible connector provided in an embodiment of the present utility model;

[0025] Figure 9 A schematic diagram of the data transmission controller provided in an embodiment of this utility model. Detailed Implementation

[0026] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] See Figures 1 to 2 The figure illustrates a preferred structure of the concrete strength testing device capable of automatically climbing columns provided by an embodiment of the present invention. As shown, the testing device includes: an outer support frame 1, a wall-climbing mechanism 2, and a strength testing component 3; wherein, the outer support frame 1 is used to surround the concrete column structure; the wall-climbing mechanism 2 is disposed on the inner side of the outer support frame 1 and is used to climb along the axial direction of the concrete column structure to reach the preset core testing area, i.e., the beam-column junction; the strength testing component 3 is disposed on the outer support frame 1 and is used to simultaneously test multiple concrete strength testing points.

[0028] Specifically, the outer support frame 1 is a square frame structure adapted to the concrete column structure, used to surround the outer perimeter of the concrete column structure for fixation. The wall-climbing mechanism 2 is located inside the outer support frame 1, used to drive the outer support frame 1 and the strength detection component 3 to crawl along the axial direction of the concrete column structure to the preset core detection area, whereby the strength detection component 3 performs strength detection. The wall-climbing mechanism 2 can refer to the self-lifting column-climbing device and self-lifting wind power equipment maintenance system disclosed in Chinese Publication No. CN202785541U, or other wall-climbing mechanisms, such as the negative pressure wall-climbing carrier in a wall-climbing image acquisition device disclosed in CN218647439U. It can also achieve wall climbing through climbing wheels; as long as wall climbing is achieved, it is acceptable, and this embodiment does not impose any limitations. Figure 3 As shown, the wall-climbing mechanism 2 can be an automatic column-climbing wheel 21. The automatic column-climbing wheel 21 is also equipped with a limiting and fixing device 22 to lock the automatic column-climbing wheel 21, thereby positioning the automatic column-climbing wheel 21 onto the concrete column structure and achieving the fixation and stopping of the device. In this embodiment, the wall-climbing mechanism 2 can also be equipped with a mounting buckle 23 for mounting onto the outer support frame 1, thereby achieving the connection and fixation between the wall-climbing mechanism 2 and the outer support frame 1. In this embodiment, as... Figure 4 As shown, the strength testing component 3 includes a fixed support plate 31; the fixed support plate 31 has a plurality of test points 311 arranged in an array, and each test point 311 is equipped with a test component to simultaneously perform strength testing on the columns corresponding to multiple test points. In this embodiment, there can be 16 test points 311, or other numbers, and no limitation is made in this embodiment. The testing method of each test component can refer to the measuring component in the concrete strength testing device for building construction disclosed in Chinese Publication No. CN118706655A, which performs rebound testing on the concrete column structure surrounded by the outer support frame 1, that is, the compressive strength of the concrete is estimated by the restoring force of the instantaneous elastic deformation generated by the impact on the concrete surface.

[0029] See also Figure 1 The outer support frame 1 is a telescopic support frame to adapt to concrete column structures with different cross-sections. The outer support frame 1 includes two first telescopic frame bodies 11 and two second telescopic frame bodies 12. The two first telescopic frame bodies 11 are arranged side by side and spaced apart. The two second telescopic frame bodies 12 are arranged between the two first telescopic frame bodies 11. The two ends of the two second telescopic frame bodies 12 are respectively connected to the two corresponding ends of the two first telescopic frame bodies 11. The two first telescopic frame bodies 11 and the two second telescopic frame bodies 12 form a rectangular structure.

[0030] Specifically, the first telescopic frame 11 serves as the long side, and the second telescopic frame 12 serves as the short side. The two first telescopic frames 11 and the two second telescopic frames 12 form a rectangular structure. The concrete strength testing method estimates the compressive strength of the concrete by measuring the restoring force of the instantaneous elastic deformation generated by impacting the concrete surface. Since impacting the concrete surface will generate a large vibration load, to avoid vibration of the outer support frame 1, preferably, the first telescopic frame 11 and the second telescopic frame 12 are connected by a flexible connector 13 to reduce the adverse effects of vibration load.

[0031] See Figure 5 This is a schematic diagram of the structure of the first telescopic frame provided in this embodiment of the present invention. As shown in the figure, the first telescopic frame 11 includes: a first fixed support plate 111 and a first telescopic outer shell 112; wherein, the first telescopic outer shell 112 is sleeved on the end of the first fixed support plate 111, and the first telescopic outer shell 112 extends along the length direction of the first fixed support plate 111 (e.g., ...). Figure 5 The horizontal direction shown is slidably connected to the first fixed support plate 111 for telescopic adjustment to adjust the overall length of the combination of the first fixed support plate 111 and the first telescopic outer shell 112.

[0032] Specifically, the first fixed support plate 111 serves as a support plate component, and the first telescopic outer shell 112 extends along the length direction of the first fixed support plate 111 (e.g., ...). Figure 5 The first telescopic outer shell 112 (shown horizontally) is slidably fitted around the outer periphery of the first fixed support plate 111, and the distance between the two connected second telescopic frames 12 can be adjusted by telescoping. In this embodiment, the first telescopic outer shell 112 is also connected to a first driving assembly 113, which is used to drive the sliding of the first telescopic outer shell 112 to adjust the telescoping of the first telescopic outer shell 112. The first telescopic outer shell 112 is also provided with a first telescoping control buckle 114, which is used to control the first telescopic outer shell 112 to lock and fix it when it slides into place. For example, the first telescopic outer shell 112 can be locked to the first fixed support plate 111 to prevent the first telescopic outer shell 112 from sliding on its own.

[0033] See Figure 6This is a schematic diagram of the structure of the first driving component provided in this embodiment of the present invention. As shown in the figure, the first driving component 113 includes: a first rotating center wheel 1131 and a first transmission member 1132; wherein, the first rotating center wheel 1131 is used to rotate under the action of an external force; the power input end of the first transmission member 1132 is connected to the rotating center wheel 1131, and the power output end of the transmission member is connected to the first telescopic housing 112, for converting the rotation of the rotating center wheel 1131 into the reciprocating linear motion of the first telescopic housing 112. Specifically, the first transmission member 1132 can be a telescopic chain, and a motion track 1133 is provided on the first fixed support plate 111. The telescopic chain is slidably placed in the motion track, one end is connected to the first rotating center wheel 1131 and can be wound around the first rotating center wheel 1131, and the other end is connected to the first telescopic housing 112 for pulling the first telescopic housing 112 to slide. In this embodiment, the end of the telescopic chain may also be provided with a limiting buckle 1334, which is used to lock the telescopic chain onto the first fixed support plate 111 after the telescopic chain has moved into place, thereby locking the telescopic chain. Specifically, the rotation of the first rotating center wheel 1131 drives the telescopic chain to reciprocate within the movement track, thereby pulling the first telescopic outer shell 112 to slide. After the first telescopic outer shell 112 slides into place, the limiting buckle 1334 locks the telescopic chain. Of course, the first transmission member 1132 can also be of other structures; this embodiment does not impose any limitations on it.

[0034] See Figure 7 This is a schematic diagram of the structure of the second telescopic frame provided in this embodiment of the present invention. As shown in the figure, the second telescopic frame 12 includes: a second fixed support plate 121 and two second telescopic outer shells 122; wherein, the second telescopic outer shells 122 are sleeved on both ends of the second fixed support plate 121 (e.g., Figure 7As shown at both ends), and both second telescopic outer shells 122 are slidably connected to the second fixed support plate 121 along its length direction for telescopic adjustment, thereby adjusting the overall length of the combination of the second fixed support plate 121 and the two second telescopic outer shells 122. Specifically, the structure of the second telescopic frame 12 can also refer to the first telescopic frame 11, except that telescopic outer shells are provided at both ends. The length is adjusted by the synchronous telescopic extension and retraction of the two second telescopic outer shells 122, thereby adjusting the length of the two first telescopic frames 11. In this embodiment, the second telescopic outer shell 122 is also connected to a second driving assembly 123 for driving the synchronous extension and retraction of the two second telescopic outer shells 122. The second telescopic outer shell 122 is also provided with a second telescopic control buckle 124 for controlling the second telescopic outer shell 122 to lock and fix it when it slides into place. For example, the second telescopic outer shell 122 can be locked to the second fixed support plate 121 to prevent the second telescopic outer shell 122 from sliding on its own.

[0035] In this embodiment, the structure of the second drive assembly 123 can be referenced to that of the first drive assembly 113. The second drive assembly 123 may include a second rotating center wheel and a second transmission member. The second rotating center wheel is used to rotate under external force. The second transmission member has two power output ends. The power input end of the second transmission member is connected to the second rotating center wheel, and the two power output ends of the second transmission member are respectively connected to the two second telescopic housings 122, used to convert the rotation of the second rotating center wheel into opposite or opposite movements of the two second telescopic housings. Specifically, by converting the rotation of the second rotating center wheel into opposite or opposite movements of the two second telescopic housings 122 through the second transmission member, synchronous extension and retraction of the two second telescopic housings 122 can be achieved, thereby improving the efficiency of extension and retraction adjustment.

[0036] In one embodiment of this invention, the second transmission component can be a winch structure, comprising: a winch wheel disposed on the second rotating center wheel; two connecting ropes, one end of which is disposed on the winch wheel, and the other end extending in opposite directions and respectively connected to the two second telescopic housings 122, for winding the two connecting ropes onto the winch wheel for winding when the winch wheel rotates with the rotating center wheel, thereby pulling the two second telescopic housings 122 to move towards each other; two elastic tension members corresponding to the two second telescopic housings 122 respectively, the two elastic tension members being respectively disposed between the corresponding second telescopic housing 122 and the second fixed support plate 121, and the two ends of the two elastic tension members being respectively connected to the corresponding second telescopic housing 122 and the second fixed support plate 121, for elastic deformation when the connecting ropes pull the two second telescopic housings 122 to move in opposite directions, and for applying force to the two second telescopic housings 122 when the connecting ropes are released, so that the two second telescopic housings 122 move towards each other.

[0037] In another embodiment of this invention, the second transmission component can be a winch structure, comprising: a winch wheel, two connecting ropes, and an elastic tension member; wherein, the winch wheel is disposed on the rotating center wheel; one end of each of the two connecting ropes is disposed on the winch wheel, and the other end extends in opposite directions and is respectively connected to the two second telescopic shells, for winding the two connecting ropes onto the winch wheel for winding when the winch wheel rotates with the rotating center wheel, so as to pull the two second telescopic shells to move towards each other, and the two connecting ropes are released from the winch wheel; both ends of the elastic tension member are respectively connected to the two second telescopic shells, for elastically deforming when the connecting ropes pull the two second telescopic shells to move in opposite directions, and applying a force to the two second telescopic shells when the connecting ropes are released, so as to make the two second telescopic shells move towards each other.

[0038] In the two embodiments described above, the connecting rope can refer to the telescopic chain 1132 of the first drive component 113, and can be correspondingly equipped with motion specifications and limit buckles to achieve motion guidance and locking limit.

[0039] See Figure 8This is a schematic diagram of the flexible connector provided in an embodiment of the present invention. As shown in the figure, the flexible connector 13 includes: a first connector 131, a second connector (not shown in the figure), and a damper 132; wherein, the two ends of the damper 132 are respectively connected to the first connector 131 and the second connector, and the first connector 131 and the second connector are respectively used to connect the first telescopic frame 11 and the second telescopic frame 12 to achieve a flexible connection between them. Specifically, the first connector 131 and the second connector can also be flexible components, which can reduce the adverse effects of vibration load on the first telescopic frame 11 and the second telescopic frame 12.

[0040] In this embodiment, the strength detection component 3 may also be equipped with a data transmission controller 31 for data storage and data transmission. Figure 9 As shown, the data transmission controller 31 is equipped with a digital display screen 311, which can display the rebound strength test value of the concrete component. The data transmission controller 31 can also be equipped with control keys 312, which can also read the historical test values.

[0041] In summary, the automatic column-climbing concrete strength testing device provided in this embodiment climbs along the axial direction of the concrete column structure via a wall-climbing mechanism to reach the preset core testing area. This effectively overcomes the problem of manual testing requiring climbing equipment due to the high elevation of the beam bottom and column top. Automatic column climbing saves time and effort. Simultaneous testing of multiple concrete strength testing points using the strength testing components greatly improves testing efficiency, enabling the testing of concrete strength at the beam-column junction. Since the concrete strength at the beam-column junction is crucial for controlling the strength of concrete components, monitoring and testing it with this device effectively controls the construction quality of the structure and solves the problems of safety hazards and low efficiency in existing concrete strength testing at beam-column junctions.

[0042] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0043] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A concrete strength testing device capable of automatically climbing columns, characterized in that, include: External support frame, used to enclose the concrete column structure; A wall-climbing mechanism is installed on the inner side of the outer support frame and is used to climb along the axial direction of the concrete column structure to reach the preset core detection area. A strength testing component is installed on the outer support frame to simultaneously test multiple concrete strength testing points.

2. The concrete strength testing device capable of automatically climbing columns according to claim 1, characterized in that, The outer support frame is a telescopic support frame to adapt to concrete column structures with different cross-sections.

3. The concrete strength testing device capable of automatically climbing columns according to claim 2, characterized in that, The outer support frame includes: two first telescopic frame bodies and two second telescopic frame bodies; wherein... Two first telescopic frames are arranged side by side with a gap between them, and two second telescopic frames are arranged between the two first telescopic frames. The two ends of the two second telescopic frames are respectively connected to the two corresponding ends of the two first telescopic frames. The two first telescopic frames and the two second telescopic frames form a rectangular structure.

4. The concrete strength testing device capable of automatically climbing columns according to claim 3, characterized in that, The first telescopic frame and / or the second telescopic frame include: Fixed support plate; Two telescopic outer shells are fitted onto both ends of the fixed support plate, and both telescopic outer shells are slidably connected to the fixed support plate along its length direction for telescopic adjustment, thereby adjusting the overall length of the fixed support plate and the two telescopic outer shells combined.

5. The concrete strength testing device capable of automatically climbing columns according to claim 4, characterized in that, The telescopic shell is connected to a drive assembly for driving the telescopic shell to extend and retract.

6. The concrete strength testing device capable of automatically climbing columns according to claim 5, characterized in that, The driving component includes: A rotating center wheel is used to rotate under the action of external force; The transmission component has two power output ends. The power input end of the transmission component is connected to the rotating center wheel, and the two power output ends of the transmission component are respectively connected to the two telescopic shells, which are used to convert the rotation of the rotating center wheel into the opposite or opposite motion of the two telescopic shells.

7. The concrete strength testing device capable of automatically climbing columns according to claim 6, characterized in that, The transmission component is a hoisting structure, which includes: A winch is mounted on the central rotating wheel; Two connecting ropes, one end of which is set on the winch, and the other end extends in opposite directions and is connected to the two telescopic shells respectively. When the winch rotates with the rotating center wheel, the two connecting ropes are wound around the winch to pull the two telescopic shells to move towards each other. Two elastic tension members are respectively positioned between the corresponding telescopic shells and the fixed support plate. The two ends of the two elastic tension members are respectively connected to the corresponding telescopic shells and the fixed support plate. They are used to elastically deform when the connecting rope pulls the two telescopic shells to move in opposite directions, and to apply force to the two telescopic shells when the connecting rope is released, so that the two telescopic shells move towards each other.

8. The concrete strength testing device capable of automatically climbing columns according to claim 6, characterized in that, The transmission component is a hoisting structure, which includes: A winch is mounted on the central rotating wheel; Two connecting ropes, one end of which is set on the winch, and the other end extends in opposite directions and is connected to the two telescopic shells respectively. When the winch rotates with the rotating center wheel, the two connecting ropes are wound onto the winch to pull the two telescopic shells to move towards each other, and the two connecting ropes are released from the winch. An elastic tension member, with its two ends connected to the two telescopic shells respectively, is used to elastically deform when the connecting rope pulls the two telescopic shells to move in opposite directions, and to apply a force to the two telescopic shells when the connecting rope is released, so that the two telescopic shells move towards each other.

9. The concrete strength testing device capable of automatically climbing columns according to any one of claims 3 to 8, characterized in that, The first telescopic frame and the second telescopic frame are connected by a flexible connector.

10. The concrete strength testing device capable of automatically climbing columns according to claim 9, characterized in that, The flexible connector includes: a first connector, a second connector, and a damper; wherein... The two ends of the damper are respectively connected to the first connector and the second connector. The first connector and the second connector are used to connect the first telescopic frame and the second telescopic frame to achieve a flexible connection between the two.

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