Scaffold bearing capacity detection self-balancing counterforce device and detection method

Abstract

A kind of scaffold bearing capacity detection self-balancing counterforce device and detection method, belong to the technical field of scaffold strength detection equipment.It is characterized by: including the first force distribution beam (5) being arranged at the top of scaffold, the counterforce base (10) being arranged at the bottom of scaffold, steel pull rod (8) and loading device, loading device is installed on counterforce base (10), the upper end of steel pull rod (8) is connected with the first force distribution beam (5), the lower end is connected with loading device, pressure detection element is arranged between scaffold and counterforce base (10).The scaffold bearing capacity detection self-balancing counterforce device of this application can conveniently detect the load of scaffold, and the operation is convenient during detection, and the detection is accurate;The detection method, the load applied to the scaffold is the internal load of counterforce frame, the counterforce frame does not need to add foundation connected by anchor bolt, and self-balancing effect can be achieved when load is applied.

Description

Technical Field

[0001] A self-balancing reaction force device and testing method for detecting the load-bearing capacity of scaffolding, belonging to the technical field of scaffolding strength testing equipment. Background Technology

[0002] Scaffolding is a working platform erected to ensure the smooth progress of various construction processes. Scaffolding must meet load-bearing capacity requirements to guarantee safety during construction. Currently, there are many types of scaffolding on the market, and different specifications and standards have different requirements for scaffolding load-bearing capacity. This leads to differing understandings of scaffolding load-bearing capacity and makes it difficult to accurately determine the actual load-bearing capacity of various types of scaffolding. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a self-balancing reaction force device and detection method for detecting the ultimate failure bearing capacity of scaffolding, which is convenient and accurate.

[0004] The technical solution adopted by the present invention to solve its technical problem is: the self-balancing reaction force device for detecting the bearing capacity of scaffolding, characterized in that: it includes a primary force distribution beam set at the top of the scaffolding, a reaction base set at the bottom of the scaffolding, a steel tie rod, and a loading device. The loading device is installed on the reaction base. The upper end of the steel tie rod is connected to the primary force distribution beam, and the lower end is connected to the loading device. A pressure detection element is set between the scaffolding and the reaction base.

[0005] Preferably, the primary force distribution beam comprises two I-beams arranged side-by-side and spaced apart, connected by a connecting plate. An upper pin is provided on the upper side of the primary force distribution beam. The upper end of a steel tie rod passes through the gap between the two I-beams and is fixed to the primary force distribution beam via the upper pin. The lower end of the steel tie rod is connected to the loading device. A support plate is provided in the middle of the primary force distribution beam, increasing the number of support points for the upper pin.

[0006] Preferably, an upper sleeve is installed on the upper side of the primary force distribution beam. The upper sleeve has two sleeves spaced apart. The two ends of the upper pin extend into the two upper sleeves respectively, and the upper end of the steel tie rod is connected to the middle of the upper pin.

[0007] Preferably, the scaffolding also includes a portal frame on the reaction base, with a movable crossbeam slidably mounted on the lower part of the portal frame. A loading device is located on the upper side of the movable crossbeam, and a steel tie rod is connected to the movable crossbeam. The loading device is connected to the lower end of the steel tie rod via a lower pin. The loading device, located on the upper side of the movable crossbeam, applies load to the scaffolding by pushing the movable crossbeam downwards. This facilitates loading operations and ensures a more stable load.

[0008] Preferably, the upper ends of the anti-bending frame have anti-bending sleeves, the lower part of the movable crossbeam has a lower sleeve, and the lower pin passes through the lower sleeve on the movable crossbeam and the anti-bending sleeve on the anti-bending frame in sequence to reduce the effective length of the lower pin.

[0009] Preferably, the loading device is a jack and the pressure detection element is a pressure sensor.

[0010] Preferably, it also includes a secondary force distribution beam, which is installed on an adjustable support at the top of the scaffold. Both ends of the primary force distribution beam rest on the corresponding secondary force distribution beam. By setting up the secondary force distribution beam, the load transfer path of the force distribution beam is clearer, and the load on each upright of the scaffold can be balanced.

[0011] Preferably, both ends of the movable crossbeam and the corresponding sides of the portal frame are provided with guide devices. Each guide device includes a mounting plate and rollers. Mounting plates are symmetrically installed on both sides of the end of the movable crossbeam. The mounting plates are set perpendicular to the movable crossbeam. Each mounting plate has two rollers arranged side by side and spaced apart in the vertical direction. Both sides of the portal frame are I-beams. The end of the movable crossbeam extends into the I-beam on the corresponding side of the portal frame, and the end of the movable crossbeam is limited by the rollers.

[0012] Preferably, it also includes a bending-resistant frame, which is located on the lower side of the movable crossbeam and connected to the movable crossbeam. Bending-resistant sleeves are provided on the upper sides of both ends of the bending-resistant frame, and the two ends of the lower pin extend into the bending-resistant sleeves on the corresponding sides.

[0013] Preferably, the lower part of the movable crossbeam has a lower sleeve, which is disposed between two bending sleeves, and the middle part of the lower pin is disposed inside the lower sleeve.

[0014] A detection method using the above-mentioned scaffolding load-bearing capacity detection self-balancing reaction force device, characterized by comprising the following steps:

[0015] Step 1) Install the scaffolding on the reaction base and install pressure detection elements between the bottom of the scaffolding and the reaction base;

[0016] Step 2) Install the secondary force distribution beam on the upper side of the adjustable support of the scaffold;

[0017] Step 3) Install the primary force distribution beam on the upper side of the secondary force distribution beam;

[0018] Step 4) Connect the primary force distribution beam to the loading device using steel tie rods;

[0019] Step 5) Load the scaffolding using a loading device and monitor the pressure of the scaffolding on the reaction base in real time using a pressure detection element until the scaffolding fails, thus completing the test of the load that the scaffolding can withstand.

[0020] Compared with the prior art, the beneficial effects of this invention are:

[0021] The steel tie rod of this self-balancing reaction force device for scaffold load-bearing capacity testing is installed between the primary force distribution beam and the loading device. The loading device can apply tension to the steel tie rod and cooperate with the primary force distribution beam to apply load to the scaffold. The pressure detection element between the scaffold and the reaction base can detect the pressure of the scaffold on the reaction base in real time, that is, the load on the scaffold. This makes it convenient to detect the load on the scaffold, and the operation is convenient and the detection is accurate.

[0022] This testing method can detect the maximum load that scaffolding can withstand, making it easier for construction workers to accurately grasp the load on the scaffolding and providing better guidance for its use. It also helps to prevent the load on the scaffolding from exceeding its allowable load during construction, thus eliminating safety hazards. Attached Figure Description

[0023] Figure 1 This is a left-side schematic diagram of a self-balancing reaction force device for detecting the load-bearing capacity of scaffolding.

[0024] Figure 2 This is a front view schematic diagram of a self-balancing reaction force device for detecting the load-bearing capacity of scaffolding.

[0025] Figure 3 This is a front view schematic diagram of the connection between the primary force distribution beam and the upper pin shaft.

[0026] Figure 4 This is a left-side sectional view of the connection between the primary force distribution beam and the upper pin.

[0027] Figure 5 This is a front view schematic diagram of the connection between the movable crossbeam and the lower pin.

[0028] Figure 6 This is a bottom view diagram showing the connection between the movable crossbeam and the portal frame.

[0029] In the diagram: 1. Upright pole; 2. Horizontal bar; 3. Adjustable support; 4. Secondary force distribution beam; 5. Primary force distribution beam; 6. Upper pin; 7. Connecting plate; 8. Steel tie rod; 9. Pressure sensor; 10. Reaction base; 11. Portal frame; 12. Lower pin; 13. Movable crossbeam; 14. Jack; 15. Hanging plate; 16. Upper sleeve; 17. Upright plate; 18. Support plate; 19. Bending frame; 20. Bending sleeve; 21. Lower sleeve; 22. Mounting plate; 23. Roller. Detailed Implementation

[0030] Figures 1-6 This is the preferred embodiment of the present invention, which is described below in conjunction with the accompanying drawings. Figures 1-6 The present invention will be further described below.

[0031] A self-balancing reaction force device for detecting the load-bearing capacity of scaffolding includes a primary force distribution beam 5 installed at the top of the scaffolding, a reaction base 10 installed at the bottom of the scaffolding, a steel wire rope tie rod 8, and a loading device. The loading device is installed on the reaction base 10. The upper end of the steel tie rod 8 is connected to the primary force distribution beam 5, and the lower end is connected to the loading device. A pressure detection element is installed between the scaffolding and the reaction base 10. The steel tie rod 8 of this self-balancing reaction force device is positioned between the primary force distribution beam 5 and the loading device. The loading device can apply tension to the steel tie rod 8, which, in conjunction with the primary force distribution beam 5, applies a load to the scaffolding. The pressure detection element between the scaffolding and the reaction base 10 can detect the pressure exerted by the scaffolding on the reaction base 10 in real time, i.e., the load on the scaffolding. This facilitates the detection of the scaffolding load, and the operation is convenient and accurate.

[0032] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention necessarily exceeds the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but still fall within the protection scope of this application.

[0033] Specifically: such as Figures 1-2 As shown: A portal frame 11 is provided on the upper side of the reaction base 10, and the bottom of the portal frame 11 is fixedly connected to the middle of the reaction base 10. The portal frame 11 is welded from I-beams.

[0034] A movable crossbeam 13 is installed vertically within the portal frame 11. The movable crossbeam 13 is horizontally positioned, and its two ends are slidably connected to the corresponding sides of the portal frame 11. In this embodiment, the loading device is a jack 14, which is positioned between the movable crossbeam 13 and the top of the portal frame 11. The jack 14 pushes the movable crossbeam 13 up and down, thereby achieving loading. A hydraulic cylinder can also be used as the loading device. The movable crossbeam 13 is an I-beam.

[0035] The scaffolding includes uprights 1, horizontal bars 2, and adjustable supports 3. The uprights 1 are arranged vertically. In this embodiment, there are four uprights 1, which together form a cuboid frame. A horizontal bar 2 is provided between each pair of adjacent uprights 1. A connecting plate is provided on the upright 1, and the end of the horizontal bar 2 is detachably connected to the corresponding connecting plate. An adjustable support 3 is installed at the top of each upright 1.

[0036] The lower end of the upright 1 is supported on the reaction base 10. A pressure detection element is provided between the lower end of each upright 1 and the reaction base 10. In this embodiment, the pressure detection element is a pressure sensor 9. The pressure sensor 9 is connected to the host computer and uploads the detected pressure signal to the host computer in real time.

[0037] The upper part of the scaffolding is equipped with secondary force distribution beams 4 and primary force distribution beams 5, arranged sequentially from bottom to top. There are two primary force distribution beams 5 arranged side-by-side with intervals. A secondary force distribution beam 4 is installed at the upper end of every two uprights 1. Both ends of the secondary force distribution beam 4 rest on corresponding adjustable supports 3. The primary force distribution beams 5 are positioned above the secondary force distribution beams 4, with both ends resting on the middle of the corresponding secondary force distribution beams 4. The secondary force distribution beams 4 are I-beams.

[0038] The primary force distribution beam 5 includes two I-beams arranged side by side and spaced apart. Connecting plates 7 are provided on the upper and lower sides of the two I-beams. The two ends of the connecting plates 7 are welded to the corresponding I-beams. Several connecting plates 7 are arranged at intervals along the length of the I-beams, and the connecting plates 7 on the upper side and the connecting plates 7 on the lower side of the I-beams correspond one-to-one.

[0039] like Figures 3-4 As shown: Each I-beam of the primary force distribution beam 5 is equipped with an upper sleeve 16. The upper sleeve 16 is horizontally installed in the middle of the primary force distribution beam 5 and is arranged along the width direction of the primary force distribution beam 5. The upper end of the steel tie rod 8 is provided with a hanging plate 15, which has a through hole. The hanging plate 15 at the upper end of the steel tie rod 8 is connected to the upper sleeve 16 through an upper pin 6. The two ends of the upper pin 6 extend into the two upper sleeves 16 respectively, and the hanging plate 15 is hung on the middle of the upper pin 6, thereby connecting the steel tie rod 8 to the upper pin 6.

[0040] In this embodiment, there are two steel tie rods symmetrically arranged on both sides of the movable crossbeam 13. The diameter of the middle part of the upper pin 6 is smaller than the diameter of the two ends, and a hooking part is formed in the middle of the upper pin 6. The hooking plates 15 at the upper ends of the two steel tie rods 8 are hooked on the hooking part of the upper pin 6 to avoid the distance between the upper ends of the two steel tie rods 8 being too large.

[0041] A vertical plate 17 and a support plate 18 are installed between the two I-beams of the primary force distribution beam 5. The vertical plate 17 is perpendicular to the primary force distribution beam 5 and has two symmetrically arranged on both sides of the upper pin 6. The two sides of the vertical plate 17 are welded to the corresponding I-beams. The support plate 18 is vertically arranged between the two vertical plates 17 and its two ends are welded to the corresponding vertical plates 17. The middle part of the upper pin 6 is supported on the top of the support plate 18, and the hanging plates 15 at the upper ends of the two steel tie rods 8 are located on both sides of the support plate 18, thereby improving the bending strength of the upper pin 6 and preventing the upper pin 6 from bending during the test.

[0042] like Figure 5As shown: The hanging plate 15 at the lower end of the steel tie rod 8 is connected to the movable crossbeam 13 through the lower pin 12. The lower pin 12 is located on the lower side of the middle part of the movable crossbeam 13. The hanging plates 15 at the lower ends of the two steel tie rods 8 are located on both sides of the movable crossbeam 13 respectively. The two ends of the lower pin 12 extend into the hanging plates 15 on the corresponding sides of the lower end of the steel tie rod 8 respectively.

[0043] During the experiment, the lower pin 12 was prone to bending deformation, and during deformation, the middle of the lower pin 12 bent downwards while the two ends curled upwards. In order to overcome the bending deformation of the lower pin 12, an anti-bending frame 19, an anti-bending sleeve 20, and a lower sleeve 21 were installed on the lower side of the movable crossbeam 13.

[0044] The lower sleeve 21 is horizontally welded to the lower side of the middle of the movable crossbeam 13. The lower sleeve 21 is fitted over the lower pin 12 to prevent the middle of the lower pin 12 from bending downwards. The anti-bending frame 19 is an I-beam installed on the lower side of the movable crossbeam 13. The anti-bending frame 19 is horizontally installed along the lower pin 12 and is spaced apart on the lower side of the lower pin 12. Anti-bending sleeves 20 are welded to the upper side of both ends of the anti-bending frame 19. The two ends of the lower pin 12 extend into the anti-bending sleeves 20 on the corresponding sides. The two ends of the lower sleeve 21 are spaced apart from the anti-bending sleeves 20 on the corresponding sides. The hanging plate 15 is hung on the lower pin 12 between the lower sleeve 21 and the anti-bending sleeves 20 on the corresponding sides. The anti-bending sleeves 20 cooperate with the anti-bending frame 19 to prevent the end of the lower pin 12 from bending upwards.

[0045] like Figure 5 As shown: Guide devices are provided at both ends of the movable crossbeam 13 and the corresponding sides of the portal frame 11. The guide devices include mounting plates 22 and rollers 23. Mounting plates 22 are symmetrically installed on both sides of the ends of the movable crossbeam 13. The mounting plates 22 are set perpendicular to the movable crossbeam 13. Rollers 23 are rotatably installed on each mounting plate 22. Each mounting plate 22 has two rollers 23 arranged side by side and spaced apart in the vertical direction, so that each end of the movable crossbeam 13 has two rollers 23 on both sides. Both sides of the portal frame 11 are I-beams. The end of the movable crossbeam 13 extends into the I-beam on the corresponding side of the portal frame 11, and the end of the movable crossbeam 13 is limited by the rollers 23.

[0046] The present invention also provides a detection method using the above-mentioned scaffolding bearing capacity detection self-balancing reaction force device, comprising the following steps:

[0047] Step 1) Install the scaffolding on the reaction base 10 and install a pressure detection element between the bottom of the scaffolding and the reaction base 10.

[0048] The scaffolding is installed on the reaction base 10, and a pressure sensor 9 is installed between the uprights 1 of the scaffolding and the reaction base 10. The pressure sensor 9 is connected to the host computer via a signal line to realize real-time pressure detection.

[0049] Step 2) Install the secondary force distribution beam 4 on the upper side of the adjustable support 3 of the scaffold.

[0050] Step 3: Install the primary force distribution beam 5 on the upper side of the secondary force distribution beam 4.

[0051] Install the secondary force distribution beam 4 on the upper side of the adjustable support 3, then install the primary force distribution beam 5 on the upper side of the secondary force distribution beam 4, and place the two ends of the primary force distribution beam 5 on the middle of the corresponding secondary force distribution beam 4.

[0052] The lower ends of the two steel tie rods 8 are connected to the corresponding sides of the lower pin 12, and the upper ends of the two steel tie rods 8 are connected to the corresponding sides of the upper pin 6.

[0053] Step 4) Connect the primary force distribution beam 5 to the loading device via the steel tie rod 8.

[0054] Step 5) Load the scaffolding using the loading device and monitor the pressure of the scaffolding on the reaction base 10 in real time using the pressure detection element until the scaffolding is destroyed, thus completing the test of the load that the scaffolding can withstand.

[0055] A downward load is applied to the movable crossbeam 13 by jack 14. The movable crossbeam 13 transmits the load to the scaffolding through the steel tie rod 8 and the primary force distribution beam 5. The pressure sensor 9 detects the pressure of the scaffolding uprights on the reaction base 10 in real time and uploads the signal to the host computer. The load is continuously applied to the movable crossbeam 13 by jack 14 until the scaffolding fails. The pressure signal detected at this point is the maximum load that the scaffolding can withstand, thus completing the load detection of the scaffolding.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A self-balancing reaction force device for detecting the load-bearing capacity of scaffolding, characterized in that: It includes a primary force distribution beam (5) set at the top of the scaffold, a reaction base (10) set at the bottom of the scaffold, a steel tie rod (8) and a loading device. The loading device is installed on the reaction base (10). The upper end of the steel tie rod (8) is connected to the primary force distribution beam (5) and the lower end is connected to the loading device. A pressure detection element is set between the scaffold and the reaction base (10). It also includes a portal frame (11) on the reaction base (10), a movable crossbeam (13) is slidably installed on the lower part of the portal frame (11), a loading device is set on the upper side of the movable crossbeam (13), a steel tie rod (8) is connected to the movable crossbeam (13), and the loading device is connected to the lower end of the steel tie rod (8) through the lower pin (12). It also includes a secondary force distribution beam (4), which is installed on the adjustable support (3) at the top of the scaffold. Both ends of the primary force distribution beam (5) are placed on the corresponding secondary force distribution beam (4). The movable crossbeam (13) is equipped with guide devices at both ends and on the corresponding sides of the portal frame (11); It also includes a bending support frame (19), which is located on the lower side of the movable crossbeam (13) and connected to the movable crossbeam (13). Both ends of the bending support frame (19) are provided with bending sleeves (20), and both ends of the lower pin (12) extend into the bending sleeves (20) on the corresponding sides. The movable crossbeam (13) has a lower sleeve (21) at the bottom. The lower sleeve (21) is located between two anti-bending sleeves (20), and the middle part of the lower pin (12) is located inside the lower sleeve (21). Each guide device includes a mounting plate (22) and a roller (23). Mounting plates (22) are symmetrically installed on both sides of the end of the movable crossbeam (13). The mounting plates (22) are set perpendicular to the movable crossbeam (13). Each mounting plate (22) has two rollers (23) arranged side by side and spaced apart in the vertical direction. Both sides of the portal frame (11) are I-beams. The end of the movable crossbeam (13) extends into the I-beam on the corresponding side of the portal frame (11) and is limited by the rollers (23).

2. The scaffolding load-bearing capacity detection self-balancing reaction force device according to claim 1, characterized in that: The primary force distribution beam (5) includes two I-beams arranged side by side and spaced apart. The two I-beams are connected by a connecting plate (7). An upper pin (6) is provided on the upper side of the primary force distribution beam (5). The upper end of the steel tie rod (8) passes through the gap between the two I-beams and is fixed to the primary force distribution beam (5) by the upper pin (6). The lower end of the steel tie rod (8) is connected to the loading device.

3. The scaffolding load-bearing capacity detection self-balancing reaction force device according to claim 2, characterized in that: The upper sleeve (16) is installed on the upper side of the first-level force distribution beam (5). There are two upper sleeves (16) with intervals. The two ends of the upper pin (6) extend into the two upper sleeves (16) respectively. The upper end of the steel tie rod (8) is connected to the middle of the upper pin (6).

4. The scaffolding load-bearing capacity detection self-balancing reaction force device according to claim 1, characterized in that: The loading device is a jack (14), and the pressure detection element is a pressure sensor (9).

5. A testing method using the self-balancing reaction force device for scaffold bearing capacity testing according to any one of claims 1 to 4, characterized in that: Includes the following steps: Step 1) Install the scaffolding on the reaction base (10) and install a pressure detection element between the bottom of the scaffolding and the reaction base (10); Step 2) Install the secondary force distribution beam (4) on the upper side of the adjustable support (3) of the scaffold; Step 3) Install the primary force distribution beam (5) on the upper side of the secondary force distribution beam (4); Step 4) Connect the primary force distribution beam (5) to the loading device via steel tie rod (8); Step 5) Load the scaffolding by loading device and detect the pressure of the scaffolding on the reaction base (10) in real time by pressure detection element until the scaffolding is destroyed, thus completing the test of the load that the scaffolding can withstand.

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