A concrete performance integrated test detection device

Abstract

The present application relates to the technical field of concrete performance detection, and more particularly to a concrete performance integrated test detection device, which comprises a hydraulic telescopic power frame and an integrated processing unit, the integrated processing unit comprises an outer double-end telescopic frame, an inner double-end telescopic frame, a center screwing unit, a double-head pulling transmission unit and a pressure clamping transmission unit, two ends of the double-head pulling transmission unit are connected with two telescopic ends of the inner double-end telescopic frame respectively, the middle part of the double-head pulling transmission unit is connected with the middle part of the inner double-end telescopic frame, and the middle position of the outer double-end telescopic frame and the center position of the inner double-end telescopic frame are connected with the pressure clamping transmission unit. The present application can realize automatic corner turning of the concrete plate in the tensile detection process through the cooperation of the integrated processing unit and the center screwing unit arranged symmetrically up and down, solve the defect that the prior art can only perform single direction tensile detection, and thus more comprehensive anti-cracking performance data can be obtained.

Description

Technical Field

[0001] This invention relates to the technical field of concrete performance testing, and in particular to an integrated testing device for concrete performance. Background Technology

[0002] Concrete slab components are cement-based composite material components made primarily of cement, sand, gravel, and water, formed through pouring, vibration, and curing. In construction engineering, they are mainly used as load-bearing or enclosure structures such as floor slabs, roof slabs, road slabs, bridge slabs, and wall panels.

[0003] Its crack resistance under bending or tension conditions is a key indicator that determines the durability and safety of a structure. After the concrete slab is produced, the performance of the concrete sample will be tested in an integrated manner to check whether the tensile performance of the concrete slab meets the requirements.

[0004] The existing technologies for testing concrete sample components have the following drawbacks: When testing concrete samples, the existing technology applies opposite-direction tension to the placed concrete sample to make it bear a stable tensile force. However, this method can only test the concrete sample in a single linear direction, while concrete slabs will bear tensile forces in different directions in actual use. The existing testing equipment has a relatively simple testing method and cannot obtain sufficient experimental data. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides an integrated testing and detection device for concrete performance.

[0006] The present invention provides an integrated testing and detection device for concrete performance, which adopts the following technical solution: including:

[0007] A hydraulic telescopic power frame, which can extend and retract vertically.

[0008] An integrated processing unit is provided, and two integrated processing units are respectively connected to the upper and lower ends of the hydraulic telescopic power frame.

[0009] The integrated processing unit includes:

[0010] An external double-ended telescopic frame, one end of which is connected to a hydraulic telescopic power frame, and the other end of which is equipped with ball bearings.

[0011] An inner double-end telescopic frame, wherein the two telescopic ends of the inner double-end telescopic frame are respectively slidably sleeved on the two telescopic ends of the outer double-end telescopic frame.

[0012] The center screwing unit is rotatably sleeved on the outside of the center screwing unit at the center position of the outer double-end telescopic frame and the inner double-end telescopic frame.

[0013] The double-headed pulling transmission unit has its two ends connected to the two telescopic ends of the inner double-end telescopic frame, and its middle part connected to the middle part of the inner double-end telescopic frame.

[0014] The pressure clamping transmission unit is connected to both the middle position of the outer double-end telescopic frame and the center position of the inner double-end telescopic frame. The pressure clamping transmission unit is connected to the double-headed pulling transmission unit and the hydraulic telescopic power frame.

[0015] A power drive unit is provided on one side of the hydraulic telescopic power frame. The two ends of the power drive unit are respectively connected to the two ends of the hydraulic telescopic power frame. The power drive unit can drive the inner double-end telescopic frames on both sides of the cement board sample to clamp the cement board sample through the drive pressure clamping transmission unit. The power drive unit can push the two ends of the inner double-end telescopic frames to apply tension to the cement board sample through the drive pressure clamping transmission unit and the double-head pulling transmission unit. The power drive unit can control the rotation of the central screwing unit through the drive pressure clamping transmission unit.

[0016] Optionally, the outer double-end telescopic frame includes an outer double-end telescopic plate and two limiting frames. The two limiting frames are respectively connected to the two telescopic ends of the outer double-end telescopic plate. Outer frames are installed on both sides of the middle position of the outer double-end telescopic plate. Both outer frames are connected to the hydraulic telescopic power frame. Ball bearings are installed on the end of the limiting frame away from the outer double-end telescopic plate.

[0017] Optionally, the inner double-end telescopic frame includes an inner double-end telescopic plate and two clamping and pulling covers. The two telescopic ends of the inner double-end telescopic frame are respectively connected to the two clamping and pulling covers. One end of the mounting ball of the two limiting frames is located inside the two clamping and pulling covers. An inner side frame is installed in the middle of the inner double-end telescopic frame.

[0018] Optionally, the pressure clamping transmission unit includes a main shaft and a main gear. The main shaft is rotatably connected to the hydraulic telescopic power frame. The main gear is coaxially mounted with the main shaft. The main shaft is rotatably connected to the adjacent outer frame. A lead screw is coaxially mounted on the main shaft. The inner frame is slidably sleeved on the outer surface of the lead screw.

[0019] The outer surface of the lead screw is threaded with a power storage frame, which is slidably connected to the adjacent inner frame and elastically connected to the inner frame.

[0020] Optionally, the central screwing unit includes a screwing cylinder and multiple pressure rods. The multiple pressure rods are on the circumferential surface of the screwing cylinder. The outer double-end telescopic plate is rotatably sleeved on the outside of the screwing cylinder, and the middle part of the inner double-end telescopic plate is sleeved on the outside of the screwing cylinder. The screwing cylinder can rotate and slide relative to the inner double-end telescopic plate.

[0021] A double-ring plate is slidably sleeved on the outer side of the screwing shaft. The inner ring of the double-ring plate passes through the outer ring surface of the screwing shaft and is located inside the screwing shaft. The double-ring plate is located between the outer double-end telescopic plate and the inner double-end telescopic plate. The inner end of the double-ring plate is elastically connected to the screwing shaft. An inner shaft rod is slidably inserted coaxially inside the screwing shaft. A screwing gear is installed at the outer end of the inner shaft rod. The screwing gear and the inner shaft rod are connected by a ratchet and tooth structure. The screwing gear rotates unidirectionally relative to the inner shaft rod. When the screwing gear moves relative to the screwing shaft rod with the inner shaft rod, it can mesh with the main gear.

[0022] Optionally, the dual-head pulling transmission unit includes a bidirectional internal threaded cylinder and two threaded rods. The bidirectional internal threaded cylinder is rotatably connected to the adjacent inner frame. The two threaded rods are threaded into the two ends of the bidirectional internal threaded cylinder at their respective close ends. The two threaded rods are coaxially mounted with elastic telescopic ribs at their respective far ends. The two telescopic ribs are respectively fixed to two adjacent pressing and pulling covers at their respective far ends.

[0023] The bidirectional internal threaded cylinder is coaxially mounted with a pulling gear, and a pulling tooth plate is vertically meshed on one side of the pulling gear. The pulling tooth plate is connected to the energy storage frame.

[0024] Optionally, a toothed block is engaged on one side of the turning gear, and a movable frame is rotatably sleeved on the outer side of the turning shaft cylinder. The movable frame is slidably connected to the adjacent outer frame, and the toothed block is connected to the movable frame through an elastic telescopic rod that can elastically extend and retract.

[0025] Optionally, the power drive unit includes a power telescopic shaft, the two ends of which are rotatably connected to the two ends of the hydraulic telescopic power frame, and both ends of the power telescopic shaft are connected to the two main shafts via belt drives.

[0026] Optionally, the two screwing cylinders are coaxially arranged, and the multiple pressure bending rods connected to the screwing cylinders are evenly distributed in a circumferential array around the axis of the screwing cylinders.

[0027] Optionally, the two clamping and pulling covers connected to the inner double-end telescopic plate are symmetrically distributed with the screwing shaft cylinder, and the bidirectional internal thread cylinder is set perpendicular to the screwing shaft cylinder.

[0028] In summary, the present invention has the following beneficial technical effects:

[0029] 1. This invention achieves automatic rotation of concrete slabs during tensile testing by cooperating with an integrated processing unit symmetrically arranged at the top and bottom and a central screwing unit. By utilizing the reciprocating motion of the accumulator frame in the pressure clamping transmission unit, the screwing cylinder and pressure bending rod are driven to rotate the concrete slab in one direction by a specific angle, which solves the defect of existing technologies that can only perform tensile testing in one direction, thereby obtaining more comprehensive crack resistance performance data.

[0030] 2. This invention utilizes the linkage design of a pressure clamping transmission unit and a double-headed pulling transmission unit. While the main shaft drive screw presses down to complete sample clamping and energy storage, the bidirectional internal threaded cylinder is rotated through gear and rack transmission. The elastic force stored by the telescopic rib applies a stable pulling force to the sample. The clamping and pulling processes are integrated into the positive stroke of the same power, which improves the detection efficiency and ensures the coordinated stability of clamping force and pulling force.

[0031] 3. This invention applies resistance to the rotation of the turning gear by the toothed block cooperating with the turning gear under the elastic action of the elastic telescopic rod, ensuring that when the main gear rotates in both directions and meshes with the turning gear, it stably drives the inner shaft to rotate in one direction under the cooperation of the ratchet and tooth structure. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the distribution of the integrated processing unit and the hydraulic telescopic power frame in an embodiment of the present invention;

[0034] Figure 3 This is a front view schematic diagram of some structures in an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the integrated processing unit in an embodiment of the present invention;

[0036] Figure 5 This is a top view of the integrated processing unit according to an embodiment of the present invention;

[0037] Figure 6 This is a side view of the integrated processing unit in an embodiment of the present invention.

[0038] Figure 7 This is an exploded view of the integrated processing unit in an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of the double-headed pulling transmission unit in an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the structure of the central screwing unit in an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the ratchet tooth structure and the distribution of the turning gear in an embodiment of the present invention.

[0042] Reference numerals: 1. Hydraulic telescopic power frame; 2. Integrated processing unit; 21. Outer double-end telescopic frame; 211. Outer double-end telescopic plate; 212. Limiting frame; 213. Outer frame; 22. Inner double-end telescopic frame; 221. Inner double-end telescopic plate; 222. Pressing and pulling cover; 223. Inner frame; 23. Central screwing unit; 231. Screwing shaft cylinder; 232. Pressure bending rod; 233. Double ring plate; 234. Inner shaft; 235. Screwing gear; 236. Ratchet 24. Ratchet structure; 241. Double-headed pulling transmission unit; 242. Two-way internal threaded cylinder; 243. Threaded rod; 244. Telescopic rib; 245. Pulling gear; 246. Pulling tooth plate; 247. Tooth block; 248. Movable frame; 25. Elastic telescopic rod; 25. Pressure clamping transmission unit; 251. Main shaft; 252. Main gear; 253. Lead screw; 254. Power storage frame; 26. Ball bearing; 3. Power drive unit; 31. Power telescopic shaft; 32. Belt. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0044] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0045] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0047] The following is in conjunction with the appendix Figures 1-10 The present invention will be described in further detail below.

[0048] This invention discloses an integrated testing and detection device for concrete performance. For example... Figures 1-10 As shown, it includes a hydraulic telescopic power frame 1 and an integrated processing unit 2.

[0049] The hydraulic telescopic power frame 1 can extend and retract vertically. There are two integrated processing units 2, which are connected to the upper and lower ends of the hydraulic telescopic power frame 1 respectively.

[0050] In this embodiment, the hydraulic telescopic power frame 1 ensures two plate-shaped structures, and the four corners of the two plate-shaped structures are connected by hydraulic cylinders. The extension and retraction of the hydraulic cylinders control the distance between the two plate-shaped structures, thereby controlling the two integrated processing units 2 to contact the upper and lower surfaces of the concrete respectively.

[0051] Furthermore, in an optional embodiment, the integrated processing unit 2 includes an outer double-end telescopic frame 21, an inner double-end telescopic frame 22, a central screwing unit 23, a double-headed pulling transmission unit 24, and a pressure clamping transmission unit 25.

[0052] One end of the external double-end telescopic frame 21 is connected to the hydraulic telescopic power frame 1, and the other end of the external double-end telescopic frame 21 is equipped with a ball bearing 26.

[0053] Specifically, the outer double-end telescopic frame 21 includes an outer double-end telescopic plate 211 and two limiting frames 212. The two limiting frames 212 are respectively connected to the two telescopic ends of the outer double-end telescopic plate 211. Outer frames 213 are installed on both sides of the middle position of the outer double-end telescopic plate 211. Both outer frames 213 are connected to the hydraulic telescopic power frame 1. The ball bearing 26 is installed on the end of the limiting frame 212 away from the outer double-end telescopic plate 211.

[0054] In this embodiment, the concrete slab to be tested is placed on the lower center screwing unit 23 and the lower ball bearing 26. When the hydraulic telescopic power frame 1 retracts as a whole, it drives the upper outer double-end telescopic plate 211 and the upper limiting frame 212 to move downward, so that the upper ball bearing 26 contacts the upper surface of the concrete slab sample, thereby providing stable horizontal support for the concrete slab.

[0055] The two telescopic ends of the inner double-end telescopic frame 22 are respectively slidably sleeved on the two telescopic ends of the outer double-end telescopic frame 21.

[0056] Specifically, the inner double-end telescopic frame 22 includes an inner double-end telescopic plate 221 and two pressing and pulling covers 222. The two telescopic ends of the inner double-end telescopic frame 22 are respectively connected to the two pressing and pulling covers 222. One end of the mounting ball 26 of the two limiting frames 212 is located inside the two pressing and pulling covers 222 respectively. An inner side frame 223 is installed in the middle of the inner double-end telescopic frame 22.

[0057] In this embodiment, the material of the contact end between the clamping and pulling cover 222 and the concrete slab is a material with a high coefficient of friction, ensuring that the clamping and pulling cover 222 on both the upper and lower sides applies a stable pulling force to the concrete.

[0058] The outer double-end telescopic frame 21 and the inner double-end telescopic frame 22 are rotatably sleeved on the outside of the central screwing unit 23.

[0059] The middle position of the outer double-end telescopic frame 21 and the center position of the inner double-end telescopic frame 22 are both connected to the pressure clamping transmission unit 25, which is connected to the hydraulic telescopic power frame 1.

[0060] Furthermore, in an optional embodiment, the pressure clamping transmission unit 25 includes a main shaft 251 and a main gear 252. The main shaft 251 is rotatably connected to the hydraulic telescopic power frame 1, the main gear 252 is coaxially mounted with the main shaft 251, the main shaft 251 is rotatably connected to the adjacent outer frame 213, and a lead screw 253 is coaxially mounted on the main shaft 251. The inner frame 223 is slidably sleeved on the outer surface of the lead screw 253.

[0061] The outer surface of the lead screw 253 is threaded with a power storage frame 254. The power storage frame 254 is slidably connected to the adjacent inner frame 223. The power storage frame 254 is elastically connected to the connected inner frame 223. Preferably, the power storage frame 254 and the inner frame 223 are connected by a spring.

[0062] In this embodiment, the main shaft 251 rotates forward and backward, driving the lead screw 253 to rotate synchronously. The energy storage frame 254 moves up and down by meshing with the lead screw 253 rotating forward and backward. When the energy storage frame 254 approaches the concrete slab, the energy storage frame 254 presses the concrete slab against the inner frame 222 by elastically pushing and pressing the tension cover 222 between itself and the inner frame 223.

[0063] The two ends of the double-headed pulling transmission unit 24 are respectively connected to the two telescopic ends of the inner double-end telescopic frame 22, the middle part of the double-headed pulling transmission unit 24 is connected to the middle part of the inner double-end telescopic frame 22, and the pressure clamping transmission unit 25 is connected to the double-headed pulling transmission unit 24.

[0064] Furthermore, in an optional embodiment, the central screwing unit 23 includes a screwing cylinder 231 and a plurality of pressure bending rods 232. The plurality of pressure bending rods 232 are on the circumferential surface of the screwing cylinder 231. The outer double-end telescopic plate 211 is rotatably sleeved on the outside of the screwing cylinder 231, and the middle part of the inner double-end telescopic plate 221 is sleeved on the outside of the screwing cylinder 231. The screwing cylinder 231 can rotate and slide relative to the inner double-end telescopic plate 221.

[0065] The two clamping and pulling covers 222 connected to the inner double-end telescopic plate 221 are symmetrically distributed with the screwing shaft cylinder 231, and the bidirectional internal thread cylinder 241 is set perpendicular to the screwing shaft cylinder 231.

[0066] A double-ring plate 233 is slidably sleeved on the outer side of the rotating shaft cylinder 231. The inner ring of the double-ring plate 233 passes through the outer ring surface of the rotating shaft cylinder 231 and is located inside the rotating shaft cylinder 231. The double-ring plate 233 is located between the outer double-end telescopic plate 211 and the inner double-end telescopic plate 221. One end of the double-ring plate 233 is elastically connected to the rotating shaft cylinder 231. An inner shaft rod 234 is slidably inserted coaxially into the inner side of the rotating shaft cylinder 231. A rotating gear 235 is installed at one end of the inner shaft rod 234 on the outer side of the rotating shaft cylinder 231. The rotating gear 235 and the inner shaft rod 234 are connected by a ratchet and tooth structure 236. The rotating gear 235 rotates unidirectionally relative to the inner shaft rod 234. When the rotating gear 235 moves with the inner shaft rod 234 relative to the rotating shaft cylinder 231, it can mesh with the main gear 252.

[0067] In this embodiment, when the accumulator 254 meshes with the lead screw 253, the inner frame 223, the inner double-ended telescopic plate 221, and the clamping and pulling cover 222 are pulled away from the concrete slab by the spring. As the inner double-ended telescopic plate 221 moves away from the concrete slab, it pushes the double-ring plate 233 away from the concrete slab. As the double-ring plate 233 moves away from the concrete slab, it gradually drives the turning gear 235 to approach the main gear 252. After the turning gear 235 meshes with the main gear 252, the main gear 252 drives the turning shaft cylinder 231 to rotate through the meshing with the turning gear 235. As the concrete slab rotates, it is driven to a certain angle by the pressure bending rods 232 on both the upper and lower sides. Then, after the main shaft 251 rotates in the opposite direction, the lead screw 253 meshes with the accumulator 254 and pushes the clamping and pulling cover 222 to clamp the concrete slab again. At the same time, as the main shaft 251 and the main gear 252 rotate in reverse, due to the one-way transmission effect of the ratchet tooth structure 236, the screwing cylinder 231 will not rotate during the reverse rotation of the main shaft 251. Thus, as the clamping and pulling cover 222 moves away from and then closer to the concrete slab, the concrete slab rotates to a certain angle, changing the pulling direction of the clamping and pulling cover 222 on both sides of the screwing cylinder 231.

[0068] A toothed block 246 meshes with one side of the rotating gear 235. A movable frame 247 is rotatably sleeved on the outside of the rotating shaft cylinder 231. The movable frame 247 is slidably connected to the adjacent outer frame 213. The toothed block 246 and the movable frame 247 are connected by an elastic telescopic rod 248 that can elastically extend and retract. Under the elastic thrust of the elastic telescopic rod 248, the toothed block 246 meshes with the rotating gear 235, applying resistance to the rotation of the rotating gear 235. This ensures that when the main gear 252 rotates in both directions and meshes with the rotating gear 235, it drives the inner shaft rod 234 to rotate in one direction in cooperation with the ratchet and tooth structure 236.

[0069] In this embodiment, each tooth on the upper surface of the rotating gear 235 is provided with a matching conical protrusion, which facilitates the rotating gear 235 to approach the main gear 252 and the teeth of the rotating gear 235 to be inserted between the teeth of the main gear 252.

[0070] Two screwing cylinders 231 are coaxially arranged, and multiple pressure bending rods 232 connected to the screwing cylinders 231 are evenly distributed in a circumferential array around the axis of the screwing cylinders 231, so that the pressure bending rods 232 apply pressure evenly to the concrete slab.

[0071] Furthermore, in an optional embodiment, the dual-head pulling transmission unit 24 includes a bidirectional internal threaded cylinder 241 and two threaded rods 242. The bidirectional internal threaded cylinder 241 is rotatably connected to the adjacent inner frame 223. The two threaded rods 242 are threadedly inserted into the two ends of the bidirectional internal threaded cylinder 241 at their respective close ends. The two threaded rods 242 are coaxially mounted with elastic telescopic ribs 243 at their respective far ends. The two telescopic ribs 243 are respectively fixed to two adjacent pressing and pulling covers 222 at their respective far ends.

[0072] A pulling gear 244 is coaxially mounted on a bidirectional internal threaded cylinder 241. A pulling tooth plate 245 is vertically meshed on one side of the pulling gear 244, and the pulling tooth plate 245 is connected to the accumulator 254.

[0073] In this embodiment, after the accumulator 254 compresses the concrete slab by elastically connecting with the inner frame 223 and driving the clamping and pulling cover 222, the accumulator 254 continues to move, causing the pulling tooth plate 245 to mesh with the pulling gear 244. The bidirectional internal threaded cylinder 241 rotates in the same direction as the pulling gear 244. The bidirectional internal threaded cylinder 241 meshes with the two threaded rods 242, and the telescopic ribs 243 on both sides apply a thrust to the clamping and pulling cover 222 on both sides. The telescopic ribs 243 control the clamping and pulling cover 222 to apply a pulling force to the concrete slab through elastic force storage.

[0074] Furthermore, in an optional embodiment, a power drive unit 3 is provided on one side of the hydraulic telescopic power frame 1. The two ends of the power drive unit 3 are respectively connected to the two ends of the hydraulic telescopic power frame 1. The power drive unit 3 can drive the inner double-end telescopic frames 22 on both sides of the cement board sample to clamp the cement board sample through the drive pressure clamping transmission unit 25. The power drive unit 3 can push the two ends of the inner double-end telescopic frames 22 to apply tension to the cement board sample through the drive pressure clamping transmission unit 25 and the double-head pulling transmission unit 24. The power drive unit 3 can control the central screwing unit 23 to rotate through the drive pressure clamping transmission unit 25.

[0075] Specifically, the power drive unit 3 includes a power telescopic shaft 31, the two ends of which are rotatably connected to the two ends of the hydraulic telescopic power frame 1, and the two ends of the power telescopic shaft 31 are driven by the two main shafts 251 via belts 32.

[0076] In this embodiment, the hydraulic telescopic power frame 1 is equipped with a motor that drives the power telescopic shaft 31 to rotate. The motor can drive the power telescopic shaft 31 to rotate in both directions. Both ends of the power telescopic shaft 31 rotate synchronously. The power telescopic shaft 31 drives the main shaft 251 to rotate through the belt 32, and outputs rotational power to the main shaft 251.

[0077] The working principle is as follows: the concrete slab to be tested is placed above the lower center screwing unit 23 and the lower ball bearing 26. The hydraulic telescopic power frame 1 is activated to retract, which drives the two integrated processing units 2 to move closer to each other until the upper and lower ball bearings 26 contact the upper and lower surfaces of the concrete slab sample respectively. At the same time, the pressure bending rods 232 of the center screwing units 23 on both sides of the concrete slab contact the concrete slab sample, thus completing the horizontal support and limiting of the concrete slab.

[0078] Subsequently, the power drive unit 3 is activated to drive the two main shafts 251 to rotate synchronously. The main shafts 251 drive the coaxial lead screw 253 and main gear 252 to rotate synchronously. The rotation of the lead screw 253 drives the accumulator frame 254 to move along the lead screw 253 towards the concrete slab. The accumulator frame 254 pushes the inner double-end telescopic plate 221 and the clamping and pulling cover 222 towards the concrete slab through the spring between it and the inner frame 223. When the clamping and pulling cover 222 contacts the concrete slab, the accumulator frame 254 continues to move to compress the spring and accumulate elastic thrust, so that the upper and lower clamping and pulling covers 222 apply a stable clamping force to the concrete slab.

[0079] As the accumulator 254 continues to move, it drives the tension tooth plate 245 to move synchronously. The tension tooth plate 245 meshes with the tension gear 244, driving the bidirectional internal thread cylinder 241 to rotate. The bidirectional internal thread cylinder 241 drives the threaded rods 242 at both ends to move away from each other. Through the telescopic rib 243, it drives the two clamping tension covers 222 to move away from each other, applying a tension force to the clamped concrete slab, thus enabling the concrete tensile performance test.

[0080] When the concrete slab detection position needs to be adjusted to change the direction of the tensile force, the main shaft 251 reverses, causing the lead screw 253 to reverse. The lead screw 253 drives the accumulator frame 254 to move away from the concrete slab along the direction away from the concrete slab. The spring force is gradually released, and the inner frame 223, the inner double-end telescopic plate 221, and the pressing and pulling cover 222 gradually move away from the concrete slab as the accumulator frame 254 moves. During this process, the inner double-end telescopic plate 221 pushes the double ring plate 233 to move. The double ring plate 233 drives the turning gear 235 to move towards the main gear 252 and finally meshes with the main gear 252. The main gear 252 drives the turning gear 235 to rotate through the meshing. The turning gear 235 drives the inner shaft 234 and the turning cylinder 231 to rotate through the ratchet and tooth structure 236. The turning cylinder 231 drives the pressure bending rod 232 to rotate. The pressure bending rod 232 drives the concrete slab to rotate at a certain angle.

[0081] Afterwards, the main shaft 251 rotates forward again, and the above clamping and pulling steps are repeated to carry out the next performance test. Due to the unidirectional transmission characteristics of the ratchet tooth structure 236, the main shaft 251 only drives the screwing cylinder 231 to rotate in one direction during the forward and reverse rotation. The main shaft 251 completes the testing of concrete in multiple directions during the forward and reverse rotation.

[0082] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An integrated testing and detection device for concrete performance, characterized in that, include: A hydraulic telescopic power frame (1) is capable of vertical telescopic extension and retraction. An integrated processing unit (2) is provided in two parts, and the two integrated processing units (2) are respectively connected to the upper and lower ends of the hydraulic telescopic power frame (1); The integrated processing unit (2) includes: An external double-ended telescopic frame (21) is connected at one end to a hydraulic telescopic power frame (1), and a ball bearing (26) is installed at the other end of the external double-ended telescopic frame (21). The inner double-end telescopic frame (22) has two telescopic ends that are respectively slidably sleeved on the two telescopic ends of the outer double-end telescopic frame (21); The center screwing unit (23) is rotatably sleeved on the outside of the center screwing unit (23) at the center position of the outer double-end telescopic frame (21) and the inner double-end telescopic frame (22); The double-headed pulling transmission unit (24) is connected at both ends to the two telescopic ends of the inner double-end telescopic frame (22), and the middle part of the double-headed pulling transmission unit (24) is connected to the middle part of the inner double-end telescopic frame (22). The pressure clamping transmission unit (25) is connected to the middle position of the outer double-end telescopic frame (21) and the center position of the inner double-end telescopic frame (22). The pressure clamping transmission unit (25) is connected to the double-headed pulling transmission unit (24) and the pressure clamping transmission unit (25) is connected to the hydraulic telescopic power frame (1). A power drive unit (3) is provided on one side of the hydraulic telescopic power frame (1). The two ends of the power drive unit (3) are respectively connected to the two ends of the hydraulic telescopic power frame (1). The power drive unit (3) can drive the inner double-end telescopic frame (22) on both sides of the cement board sample to clamp the cement board sample through the drive pressure clamping transmission unit (25). The power drive unit (3) can push the two ends of the inner double-end telescopic frame (22) to apply pull to the cement board sample through the drive pressure clamping transmission unit (25) and the double-head pulling transmission unit (24). The power drive unit (3) can control the central screwing unit (23) to rotate through the drive pressure clamping transmission unit (25).

2. The integrated testing and detection equipment for concrete performance according to claim 1, characterized in that: The outer double-end telescopic frame (21) includes an outer double-end telescopic plate (211) and two limiting frames (212). The two limiting frames (212) are respectively connected to the two telescopic ends of the outer double-end telescopic plate (211). Outer frames (213) are installed on both sides of the middle position of the outer double-end telescopic plate (211). The two outer frames (213) are connected to the hydraulic telescopic power frame (1). The ball bearing (26) is installed at the end of the limiting frame (212) away from the outer double-end telescopic plate (211).

3. The integrated testing and detection equipment for concrete performance according to claim 2, characterized in that: The inner double-end telescopic frame (22) includes an inner double-end telescopic plate (221) and two pressing and pulling covers (222). The two telescopic ends of the inner double-end telescopic frame (22) are respectively connected to the two pressing and pulling covers (222). One end of the mounting ball (26) of the two limiting frames (212) is located inside the two pressing and pulling covers (222). An inner side frame (223) is installed in the middle of the inner double-end telescopic frame (22).

4. The integrated testing and detection equipment for concrete performance according to claim 3, characterized in that: The pressure clamping transmission unit (25) includes a main shaft (251) and a main gear (252). The main shaft (251) is rotatably connected to the hydraulic telescopic power frame (1). The main gear (252) is coaxially mounted with the main shaft (251). The main shaft (251) is rotatably connected to the adjacent outer frame (213). A lead screw (253) is coaxially mounted on the main shaft (251). The inner frame (223) is slidably sleeved on the outer surface of the lead screw (253). The outer surface of the lead screw (253) is threaded with a power storage frame (254), the power storage frame (254) is slidably connected to the adjacent inner frame (223), and the power storage frame (254) is elastically connected to the connected inner frame (223).

5. The integrated testing and detection equipment for concrete performance according to claim 4, characterized in that: The central screwing unit (23) includes a screwing cylinder (231) and multiple pressure bending rods (232). The multiple pressure bending rods (232) are on the circumferential surface of the screwing cylinder (231). The outer double-end telescopic plate (211) is rotatably sleeved on the outside of the screwing cylinder (231), and the middle part of the inner double-end telescopic plate (221) is sleeved on the outside of the screwing cylinder (231). The screwing cylinder (231) can rotate and slide relative to the inner double-end telescopic plate (221). A double-ring plate (233) is slidably sleeved on the outer side of the screwing cylinder (231). The inner ring of the double-ring plate (233) passes through the outer ring surface of the screwing cylinder (231) and is located inside the screwing cylinder (231). The double-ring plate (233) is located between the outer double-end telescopic plate (211) and the inner double-end telescopic plate (221). One end of the double-ring plate (233) located inside the screwing cylinder (231) is elastically connected to the screwing cylinder (231). The inner side of the screwing cylinder (231) slides coaxially. An inner shaft (234) is movably connected. A rotating gear (235) is installed at one end of the inner shaft (234) located outside the rotating cylinder (231). The rotating gear (235) and the inner shaft (234) are connected by a ratchet structure (236). The rotating gear (235) rotates unidirectionally relative to the inner shaft (234). When the rotating gear (235) moves relative to the rotating cylinder (231) along with the inner shaft (234), it can mesh with the main gear (252).

6. The integrated testing and detection equipment for concrete performance according to claim 5, characterized in that: The dual-head pulling transmission unit (24) includes a bidirectional internal threaded cylinder (241) and two threaded rods (242). The bidirectional internal threaded cylinder (241) is rotatably connected to the adjacent inner frame (223). The two threaded rods (242) are threadedly inserted into the two ends of the bidirectional internal threaded cylinder (241) at their respective close ends. The two threaded rods (242) are coaxially mounted with elastic telescopic ribs (243) at their respective far ends. The two telescopic ribs (243) are respectively fixed to two adjacent pressing and pulling covers (222) at their respective far ends. The bidirectional internal threaded cylinder (241) is coaxially mounted with a pulling gear (244), and a pulling tooth plate (245) is vertically meshed on one side of the pulling gear (244). The pulling tooth plate (245) is connected to the power storage frame (254).

7. The integrated testing and detection equipment for concrete performance according to claim 6, characterized in that: The rotating gear (235) has a toothed block (246) meshing on one side, and a movable frame (247) is rotatably sleeved on the outside of the rotating shaft cylinder (231). The movable frame (247) is slidably connected to the adjacent outer frame (213), and the toothed block (246) and the movable frame (247) are connected by an elastic telescopic rod (248) that can elastically extend and retract.

8. The integrated testing and detection equipment for concrete performance according to claim 7, characterized in that: The power drive unit (3) includes a power telescopic shaft (31), the two ends of which are rotatably connected to the two ends of the hydraulic telescopic power frame (1), and the two ends of the power telescopic shaft (31) are driven by the two main shafts (251) via belts (32).

9. The integrated testing and detection equipment for concrete performance according to claim 5, characterized in that: Two screwing cylinders (231) are coaxially arranged, and multiple pressure bending rods (232) connected to the screwing cylinders (231) are evenly distributed in a circumferential array around the axis of the screwing cylinders (231).

10. The integrated testing and detection equipment for concrete performance according to claim 8, characterized in that: The two pressing and pulling covers (222) connected to the inner double-end telescopic plate (221) are symmetrically distributed with the screwing shaft cylinder (231), and the bidirectional internal thread cylinder (241) is set perpendicular to the screwing shaft cylinder (231).

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