A testing device for construction scaffold structures

Abstract

The application discloses a kind of for construction scaffold structure testing device, belong to scaffold structure test technical field, including test platform, test platform is fixedly installed with support, support is installed with the loading assembly located above scaffold structure, loading assembly includes multiple groups of loading mechanism group being arranged side by side along the length direction of scaffold structure, each group of loading mechanism group includes two loading mechanism being symmetrically arranged about the center section of length direction of scaffold structure, loading mechanism includes support table, worm wheel is rotatably installed on support table, first driving mechanism for outputting linear motion is fixedly installed on one side of worm wheel, support table rotatably installs the worm gear meshing with worm wheel, the output angle of first driving mechanism can be adjusted by rotating worm gear, and the output end of first driving mechanism is ball-hinged with pressing plate.The application can realize the dynamic coupling loading of multiple points, multiple directions, multiple time sequences to scaffold structure, to simulate the complex load working condition under true construction scene.

Description

Technical Field

[0001] This invention belongs to the field of scaffolding structure testing technology, specifically relating to a device for testing construction scaffolding structures. Background Technology

[0002] Scaffolding is an indispensable temporary support structure in building construction, and its safety is directly related to the life safety of construction workers and the quality of the project. Before scaffolding is put into use, it is usually necessary to conduct systematic tests on its structural load-bearing capacity, stability, and mechanical properties to assess whether it meets the construction safety requirements.

[0003] Existing testing devices commonly employ hydraulic cylinders, jacks, or stacking loads to apply static loads to a single location or direction of the scaffolding. For example, some solutions use hydraulic cylinders and hydraulic rods to test the lateral or vertical ultimate bearing capacity of the scaffolding structure; others use portal reaction frames and actuators to apply longitudinal pressure to the portal scaffolding. While these devices can obtain bearing capacity data for the scaffolding under specific working conditions, their loading methods are singular and cannot simulate the complex, multi-point, multi-directional, and dynamically changing loads that the scaffolding experiences in actual use.

[0004] Therefore, it is necessary to propose a testing device for construction scaffold structures to solve the above problems. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a testing device for construction scaffolding structures, which can realize multi-point, multi-directional, and multi-temporal dynamic coupling loading of scaffolding structures to simulate complex load conditions in real construction scenarios.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a testing device for construction scaffold structures, comprising a testing platform for placing the scaffold structure to be tested. A support is fixedly installed on the testing platform, and a loading assembly is installed on the support above the scaffold structure. The loading assembly includes multiple groups of loading mechanisms arranged side by side along the length of the scaffold structure. Each group of loading mechanisms includes two loading mechanisms symmetrically arranged about the central cross-section of the scaffold structure along its length. Each loading mechanism includes a support platform, on which a worm gear is rotatably mounted. A first drive mechanism for outputting linear motion is fixedly mounted on one side of the worm gear. A worm gear meshing with the worm gear is rotatably mounted on the support platform. Rotating the worm gear can adjust the output angle of the first drive mechanism. A pressure plate is mounted on the output end of the first drive mechanism via a ball joint. By rotating the worm gear, one or more loading mechanisms can apply a load vertically downward to simulate single-point or multi-point stress testing of the scaffold structure; or one or more loading mechanisms can apply a load laterally downward to simulate single-point or multi-point lateral stress testing of the scaffold structure.

[0007] Furthermore, the top wall of the support is provided with a sliding groove corresponding to the loading mechanism group. The sliding groove extends along the width direction of the scaffold structure. The support platform is slidably connected in the sliding groove. A second drive mechanism corresponding to each support platform is fixedly installed on the support. The output end of the second drive mechanism is fixedly connected to the support platform. The second drive mechanism is used to output linear motion to drive the support platform to slide along the sliding groove, so as to adjust the distance between two loading mechanisms in the same loading mechanism group.

[0008] Furthermore, the test platform is provided with two symmetrically arranged arc-shaped grooves, and an arc-shaped support plate is slidably installed in the arc-shaped grooves. Two of the four legs of the scaffold are fixedly installed on the same arc-shaped support plate on the same side. The torsional load of the scaffold structure is tested by sliding the arc-shaped support plate along the arc-shaped grooves.

[0009] Furthermore, a third drive mechanism is slidably installed on the test platform. A gear is fixedly connected to the output end of the third drive mechanism. The inner wall of the arc-shaped support plate is provided with teeth that mesh with the gear. When a torque load is applied to the scaffold, the first arc-shaped support plate of the two arc-shaped support plates is fixed, so that the second arc-shaped support plate of the two arc-shaped support plates can slide along the arc-shaped groove. The third drive mechanism is slid to make the gear mesh with the second arc-shaped support plate of the two arc-shaped support plates. The rotational motion output by the third drive mechanism makes the gear drive the second arc-shaped support plate to rotate, so as to perform a torsion test on the scaffold structure in the horizontal direction.

[0010] Furthermore, two mounting sleeves are fixedly installed on the arc-shaped support plate, each corresponding to a right angle on the same side of the four legs of the scaffold structure. A screw corresponding to the mounting sleeve is fixedly installed on the arc-shaped support plate, and the mounting sleeve is threadedly connected to the screw. A first insertion hole corresponding to the leg is provided on the mounting sleeve, and the leg is inserted into the first insertion hole.

[0011] Furthermore, the side wall of the support leg is provided with a second insertion hole, and the side wall of the mounting sleeve is radially slidably provided with a rod corresponding to the second insertion hole. The support leg is inserted into the first insertion hole and inserted into the second insertion hole through the rod to limit the axial displacement of the support leg.

[0012] The beneficial effects of this invention are as follows: This invention can realize multi-point, multi-directional, and multi-temporal dynamic coupling loading of scaffolding structures to simulate complex load conditions in real construction scenarios. Attached Figure Description

[0013] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the loading mechanism structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the test platform structure according to an embodiment of the present invention; Figure 4 Embodiments of the present invention Figure 3 A magnified view of part A in the middle.

[0014] The following components are labeled in the attached diagram: test platform 1, bracket 101, slide 102, second drive mechanism 103, arc groove 104, arc support plate 105, gear 106, mounting sleeve 107, screw 108, first insertion hole 109, scaffold structure 2, support leg 201, second insertion hole 202, insertion rod 203, loading mechanism 3, support platform 301, worm gear 302, first drive mechanism 303, worm 304, pressure plate 305. Detailed Implementation

[0015] like Figures 1-4As shown, this invention discloses a testing device for construction scaffold structures, comprising: a testing platform 1 for placing the scaffold structure 2 to be tested; a support 101 fixedly mounted on the testing platform 1; a loading assembly mounted on the support 101 above the scaffold structure 2; the loading assembly comprising multiple sets of loading mechanisms arranged side-by-side along the length of the scaffold structure 2; each set of loading mechanisms comprising two loading mechanisms 3 symmetrically arranged about the central cross-section of the scaffold structure 2 along its length; each loading mechanism 3 comprising a support platform 301; a worm gear 302 rotatably mounted on the support platform 301; a first drive mechanism 303 for outputting linear motion fixedly mounted on one side of the worm gear 302; the first drive mechanism 303 including but not limited to a cylinder or a hydraulic cylinder; a worm 304 rotatably mounted on the support platform 301, meshing with the worm gear 302; rotating the worm 304 can adjust the output angle of the first drive mechanism 303; and a pressure plate 305 is ball-jointed at the output end of the first drive mechanism 303.

[0016] In this scheme, by setting multiple loading mechanisms 3, loads can be applied to different positions on the top surface of the scaffold structure 2 to achieve load testing under different working conditions; and by rotating the worm gear 304, the output angle of the first drive mechanism 303 can be adjusted to test the pressure condition of the top surface of the scaffold structure 2 under lateral load pressure, so as to simulate the opening angle of the front and rear legs when a person walks.

[0017] In one embodiment of the present invention, the top wall of the support 101 is provided with a slide groove 102 corresponding to the loading mechanism group. The slide groove 102 extends along the width direction of the scaffold structure 2. The support platform 301 is slidably connected in the slide groove 102. A second drive mechanism 103 corresponding to each support platform 301 is fixedly installed on the support 101. The output end of the second drive mechanism 103 is fixedly connected to the support platform 301. The second drive mechanism 103 is used to output linear motion to drive the support platform 301 to slide along the slide groove 102, so as to adjust the distance between the two loading mechanisms 3 in the same loading mechanism group.

[0018] In this scheme, the distance between two loading mechanisms 3 in the same loading mechanism group is adjusted to simulate the leg spread of a person walking on the scaffold structure 2.

[0019] In one embodiment of the present invention, the test platform 1 is provided with two symmetrically arranged arc-shaped grooves 104, and an arc-shaped support plate 105 is slidably installed in the arc-shaped grooves 104. Two of the four legs 201 of the scaffold structure 2 located on the same side are fixedly installed on the same arc-shaped support plate 105. The torque load of the scaffold structure 2 is tested by sliding the arc-shaped support plate 105 along the arc-shaped grooves 104.

[0020] In one embodiment of the present invention, a third drive mechanism (not shown in the figure) is slidably mounted on the test platform 1. A gear 106 is fixedly connected to the output end of the third drive mechanism. The inner wall of the arc-shaped support plate 105 is provided with teeth that mesh with the gear 106. When a torque load is applied to the scaffold structure 2, the first arc-shaped support plate of the two arc-shaped support plates 105 is fixed, allowing the second arc-shaped support plate of the two arc-shaped support plates 105 to slide along the arc-shaped groove 104. The third drive mechanism is then slid to allow the gear 106 to mesh with the second arc-shaped support plate of the two arc-shaped support plates 105, activating the third drive mechanism to output rotational motion to drive the second arc-shaped support plate to rotate via the gear 106. This achieves the test of the scaffold structure 2's torsion in the horizontal direction.

[0021] In one embodiment of the present invention, two mounting sleeves 107 are fixedly provided on the arc-shaped support plate 105, corresponding to two of the four legs 201 located on the same side of the scaffold structure 2. A screw 108 corresponding to the mounting sleeve 107 is fixedly provided on the arc-shaped support plate 105. The mounting sleeve 107 is threadedly connected to the screw 108. A first insertion hole 109 corresponding to the leg 201 is provided on the mounting sleeve 107, and the leg 201 is inserted into the first insertion hole 109. A second insertion hole 202 is provided on the side wall of the leg 201. A insertion rod 203 corresponding to the second insertion hole 202 is radially slidably provided on the side wall of the mounting sleeve 107. The leg 201 is inserted into the first insertion hole 109 and then inserted into the second insertion hole 202 via the insertion rod 203 to limit the axial displacement of the leg 201.

[0022] In this solution, during installation, the four legs 201 of the scaffold structure 2 are simply installed in the first insertion hole 109 respectively, and the height of the mounting sleeve 107 can be adjusted by rotating the mounting sleeve 107, thereby enabling the scaffold structure 2 to be tested by loading components under uneven ground conditions.

[0023] Based on the above structure, this invention can achieve load testing under different working conditions. These working conditions are all based on adjusting the height of the mounting sleeve 107 by rotating it, respectively simulating a flat ground condition and an uneven ground condition; including: Working condition 1: Apply load vertically downward through one or more loading mechanisms 3 to simulate the single-point or multi-point stress test of scaffold structure 2; Working Condition 2: Applying loads laterally downwards through one or more loading mechanisms 3 to simulate single-point or multi-point lateral force testing of scaffold structure 2; Working condition 3: A load is applied laterally downward by one of the two loading mechanisms 3 in the loading mechanism group, and a load is applied laterally downward by the two loading mechanisms 3 in the adjacent loading mechanism group that are staggered from the previous loading mechanism 3, in order to simulate the test of construction workers walking on the scaffold structure 2. Condition 4: Vibration test of scaffold structure 2 by reciprocating pressure of one or more loading mechanisms 3; Condition 5: When gear 106 meshes with one of the two arc-shaped support plates 105, rotational power is applied through the third drive mechanism to perform a torsion test on the scaffold structure 2. Operating Condition 6: Dynamic testing is conducted by combining Operating Conditions 3 to 5 with Operating Conditions 1 and 2 respectively.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A testing device for construction scaffold structures, comprising a testing platform for placing the scaffold structure to be tested, characterized in that, A support frame is fixedly installed on the test platform, and a loading assembly located above the scaffold structure is mounted on the support frame. The loading assembly includes multiple groups of loading mechanisms arranged side by side along the length of the scaffold structure. Each group of loading mechanisms includes two loading mechanisms symmetrically arranged about the central cross-section of the scaffold structure along its length. Each loading mechanism includes a support platform, on which a worm gear is rotatably mounted. A first drive mechanism for outputting linear motion is fixedly mounted on one side of the worm gear. A worm gear meshing with the worm gear is rotatably mounted on the support platform. Rotating the worm gear can adjust the output angle of the first drive mechanism. A pressure plate is mounted on the ball joint at the output end of the first drive mechanism. By rotating the worm gear, one or more loading mechanisms can apply a load vertically downward to simulate single-point or multi-point stress testing of the scaffold structure; or one or more loading mechanisms can apply a load laterally downward to simulate single-point or multi-point lateral stress testing of the scaffold structure.

2. The testing device for construction scaffolding structures according to claim 1, characterized in that: The top wall of the support is provided with a sliding groove corresponding to the loading mechanism group. The sliding groove extends along the width direction of the scaffold structure. The support platform is slidably connected in the sliding groove. A second drive mechanism corresponding to each support platform is fixedly installed on the support. The output end of the second drive mechanism is fixedly connected to the support platform. The second drive mechanism is used to output linear motion to drive the support platform to slide along the sliding groove, so as to adjust the distance between two loading mechanisms in the same loading mechanism group.

3. The testing device for construction scaffolding structures according to claim 2, characterized in that: The test platform is provided with two symmetrically arranged arc-shaped grooves, and an arc-shaped support plate is slidably installed in the arc-shaped grooves. Two of the four legs of the scaffold are fixedly installed on the same arc-shaped support plate on the same side. The torque load of the scaffold structure is tested by sliding the arc-shaped support plate along the arc-shaped grooves.

4. The testing device for construction scaffolding structures according to claim 3, characterized in that: A third drive mechanism is slidably mounted on the test platform. A gear is fixedly connected to the output end of the third drive mechanism. The inner wall of the arc-shaped support plate is provided with teeth that mesh with the gear. When a torque load is applied to the scaffold, the first arc-shaped support plate of the two arc-shaped support plates is fixed, so that the second arc-shaped support plate of the two arc-shaped support plates can slide along the arc-shaped groove. The third drive mechanism is slid to make the gear mesh with the second arc-shaped support plate of the two arc-shaped support plates. The third drive mechanism outputs rotational motion to make the gear drive the second arc-shaped support plate to rotate, so as to perform a torsion test on the scaffold structure in the horizontal direction.

5. The testing device for construction scaffolding structures according to claim 4, characterized in that: Two mounting sleeves are fixedly installed on the arc-shaped support plate, each corresponding to a right angle on the same side of the four legs of the scaffold structure. A screw rod corresponding to the mounting sleeve is fixedly installed on the arc-shaped support plate. The mounting sleeve is threadedly connected to the screw rod. A first insertion hole corresponding to the leg is provided on the mounting sleeve, and the leg is inserted into the first insertion hole.

6. The testing device for construction scaffolding structures according to claim 5, characterized in that: The side wall of the support leg is provided with a second insertion hole, and the side wall of the mounting sleeve is radially slidably provided with a rod corresponding to the second insertion hole. The support leg is inserted into the first insertion hole and inserted into the second insertion hole by the rod to limit the axial displacement of the support leg.

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