Overhanging discharging platform tail end deformation monitoring and early warning device

Abstract

The utility model relates to the technical field of cantilever discharging platform construction, and particularly discloses a cantilever discharging platform tail end deformation monitoring and early warning device which comprises a cantilever supporting plate, a first hydraulic cylinder, a first piston rod, a second hydraulic cylinder, a second piston rod and a connecting pipe. The overhanging supporting plate is located below the overhanging discharging platform, the first hydraulic cylinder is vertically arranged on the overhanging supporting plate, the first piston rod is vertically inserted into the first hydraulic cylinder, and the top end of the first piston rod abuts against the bottom of the tail end of the overhanging discharging platform; the second hydraulic cylinder is vertically arranged on the indoor ground of the building, the second piston rod is vertically inserted into the second hydraulic cylinder, and the two ends of the connecting pipe are connected to the bottom of the first hydraulic cylinder and the bottom of the second hydraulic cylinder correspondingly; the second hydraulic cylinder is provided with an alarm mechanism used for detecting the movement amount of the second piston rod. The overhanging discharging platform safety detection device has the effect of improving inconvenience in use when safety detection is carried out on the overhanging discharging platform through a level gauge or automatic electronic monitoring equipment.

Description

Technical Field

[0001] The present application relates to the technical field of cantilever unloading platform construction, and in particular to a deformation monitoring and early warning device at the end of a cantilever unloading platform. Background Art

[0002] During construction, it is often necessary to build a cantilevered unloading platform outside the building. One end of the cantilevered unloading platform extends out of the outer wall of the building and is suspended in the air, forming a cantilevered part for workers to stand or for goods to be placed. The other end of the platform is connected to the ground of the building. At the same time, the cantilevered part of the platform is connected to the roof of the building through a steel wire rope. The steel wire rope is used to give the cantilevered part of the platform an upward pulling force to avoid excessive force on the cantilevered part and causing danger.

[0003] After long-term use, the end of the cantilever unloading platform will bend, deform or even break due to stress, affecting construction safety. Therefore, for construction safety, workers need to test the safety of the cantilever unloading platform before each operation. At present, the safety test of the cantilever unloading platform mainly uses a level or automated electronic monitoring equipment.

[0004] Manual level monitoring has the disadvantages of heavy workload, high risk and inability to monitor in real time, which makes it inconvenient to use. Although automated electronic monitoring equipment can solve the above problems, it is expensive and requires a specific display to obtain monitoring results. It cannot intuitively display the monitoring results at the construction site, which makes it inconvenient to use. Utility Model Content

[0005] In order to improve the problem of inconvenience in using a level or automated electronic monitoring equipment to perform safety inspections on a cantilevered unloading platform, the present application provides a deformation monitoring and early warning device at the end of a cantilevered unloading platform.

[0006] The present application provides a cantilever unloading platform end deformation monitoring and early warning device adopts the following technical solution:

[0007] A deformation monitoring and early warning device at the end of a cantilever unloading platform comprises a cantilever support plate, a first hydraulic cylinder, a first piston rod, a second hydraulic cylinder, a second piston rod and a connecting pipe, wherein the cantilever support plate is used to be fixedly connected to the outer wall of a building in the horizontal direction, the cantilever support plate is located below the cantilever unloading platform, the first hydraulic cylinder is vertically arranged on the cantilever support plate, the first piston rod is vertically inserted in the first hydraulic cylinder, and the top end of the first piston rod abuts against the bottom of the end of the cantilever unloading platform; the second hydraulic cylinder is vertically arranged on the ground inside the building, the second piston rod is vertically inserted in the second hydraulic cylinder, and both ends of the connecting pipe are respectively connected to the bottom of the first hydraulic cylinder and the second hydraulic cylinder; the second hydraulic cylinder is provided with an alarm mechanism for detecting the movement of the second piston rod.

[0008] By adopting the above technical solution, the end of the cantilevered unloading platform bends downward, pressing the first piston rod downward, so that the hydraulic oil in the first hydraulic cylinder flows to the second hydraulic cylinder through the connecting pipe, driving the second piston rod to move upward, and the alarm mechanism detects the movement of the second piston rod in real time, and the downward deformation of the end of the cantilevered unloading platform can be obtained by calculation, thereby ensuring the safety of construction; the staff only needs to complete the real-time monitoring of the deformation of the end of the cantilevered unloading platform indoors, which has high safety, simple structure and easy use.

[0009] Optionally, the inner diameter of the first hydraulic cylinder is larger than the inner diameter of the second hydraulic cylinder.

[0010] By adopting the above technical solution, the inner cavity radius of the first hydraulic cylinder is recorded as R, the deformation amount of the end of the cantilever unloading platform is recorded as L1, the inner cavity radius of the second hydraulic cylinder is recorded as r, and the upward displacement of the second piston rod is recorded as L2, then L1=L2*r² / R². The inner diameter of the first hydraulic cylinder is larger than the inner diameter of the second hydraulic cylinder, so that the smaller deformation amount of the end of the cantilever unloading platform can cause a larger upward displacement of the second piston rod, thereby making the detection of the alarm mechanism more convenient and the detection result more accurate.

[0011] Optionally, the second piston rod is provided with a scale.

[0012] By adopting the above technical solution and setting the scale on the second piston rod, the staff can more intuitively observe the upward movement of the second piston rod, thereby improving the intuitiveness and accuracy of the detection results.

[0013] Optionally, the alarm mechanism includes a travel switch, a controller and an alarm, the contact of the travel switch is arranged above the second piston rod, with a certain distance reserved from the top end of the second piston rod, the travel switch is electrically connected to the controller, and the alarm is electrically connected to the controller.

[0014] By adopting the above technical solution, the distance between the contact of the travel switch and the top of the second piston rod is set according to actual conditions during use. When the top of the second piston rod contacts the contact of the travel switch, it means that the deformation of the end of the cantilever unloading platform has reached the safety threshold. At this time, the travel switch converts the mechanical signal into an electrical signal and transmits it to the controller. The controller controls the alarm to sound, thereby reminding the staff to respond in time. The alarm mechanism can monitor in real time to improve the safety of construction.

[0015] Optionally, a diagonal tie rod is provided above the cantilever support plate, one end of the diagonal tie rod is rotatably connected to the cantilever support plate, and the other end of the diagonal tie rod is used for fixed connection with the outer wall of the building.

[0016] By adopting the above technical solution, the diagonal rods, cantilever support plates and building exterior walls form a triangular stable structure, reducing the probability of inaccurate detection results caused by bending deformation of the cantilever support plates under stress.

[0017] Optionally, the diagonal tie rod includes a fixed tube, a movable rod and a rotating sleeve, one end of the fixed tube is rotatably connected to the cantilever support plate, the rotating sleeve is coaxially rotatably connected to the end of the fixed tube away from the cantilever support plate, a threaded hole is coaxially opened on the rotating sleeve, the movable rod is threadedly connected in the threaded hole, and the end of the movable rod away from the fixed tube is used for fixed connection to the exterior wall of the building.

[0018] By adopting the above technical solution, the movable rod can have a tendency to rotate with the rotating sleeve by rotating the rotating sleeve, and because the movable rod is fixedly connected to the outer wall of the building and cannot rotate, the movable rod can be moved along the length direction of the fixed tube by rotating the rotating sleeve, thereby adjusting the overall length of the diagonal rod, and then fine-tuning the horizontality of the cantilever support plate, compensating for the stress bending deformation of the cantilever support plate, and improving the accuracy of the detection results.

[0019] Optionally, a mounting seat is fixedly connected to the cantilever support plate, the first hydraulic cylinder is fixedly connected to the top of the mounting seat, and a plurality of clamping mechanisms are provided on the mounting seat around the axis of the first hydraulic cylinder.

[0020] By adopting the above technical solution and setting up multiple clamping mechanisms, the first hydraulic cylinder can be clamped and fixed, keeping the first hydraulic cylinder in a vertical state, reducing the probability of the first hydraulic cylinder tilting due to the tangential downward pressure on the first piston rod from the cantilevered unloading platform, thereby improving the accuracy of the detection results.

[0021] Optionally, the clamping mechanism includes a support block and a screw rod, wherein the support block is fixedly connected to the mounting seat, the screw rod is threadedly connected to the support block, and the screw rod extends radially along the first hydraulic cylinder.

[0022] By adopting the above technical solution, the screw is rotated to adjust the depth of the screw thread connection on the support block, so that the end of the screw close to the first hydraulic cylinder is pressed against the outer surface of the first hydraulic cylinder. Multiple screws work together to clamp and fix the first hydraulic cylinder. The clamping mechanism has a simple structure and the clamping operation is convenient and quick.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Through the matching arrangement of the cantilever support plate, the first hydraulic cylinder, the first piston rod, the second hydraulic cylinder, the second piston rod, the connecting pipe and the alarm mechanism, the operator can complete the real-time monitoring of the deformation of the end of the cantilever unloading platform only in the building room, which reduces the risk of monitoring, and has a simple structure and is easy to use;

[0025] 2. The inner diameter of the first hydraulic cylinder is larger than the inner diameter of the second hydraulic cylinder, so that a small deformation at the end of the cantilever unloading platform can bring about a large upward displacement of the second piston rod, thereby making it easier for the alarm mechanism to detect the upward displacement of the second piston rod, thereby making the detection result more accurate;

[0026] 3. The setting of the diagonal brace enables the cantilever support plate, the diagonal brace and the building wall to form a triangular stable structure, reducing the probability of the cantilever support plate bending downward due to force, thereby improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0029] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure.

[0030] Figure numerals: 1. cantilever support plate; 11. mounting seat; 111. support block; 1111. threaded through hole; 112. screw; 113. anti-slip pad; 2. first hydraulic cylinder; 21. first piston rod; 3. second hydraulic cylinder; 31. second piston rod; 311. scale; 4. connecting pipe; 5. alarm mechanism; 51. travel switch; 52. controller; 53. alarm; 6. cantilever unloading platform; 7. building; 71. fixed seat; 8. inclined rod; 81. fixed cylinder; 82. movable rod; 83. rotating sleeve; 831. threaded hole; 84. rotating pin. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-2 This application is described in further detail.

[0032] The present application embodiment discloses a cantilever unloading platform end deformation monitoring and early warning device. Figure 1 and Figure 2The deformation monitoring and early warning device at the end of the cantilever unloading platform comprises a cantilever support plate 1, a first hydraulic cylinder 2, a first piston rod 21, a second hydraulic cylinder 3, a second piston rod 31, a connecting pipe 4 and an alarm mechanism 5. The cantilever support plate 1 is bolted and fixed to the outer wall of the building 7 where the cantilever unloading platform 6 is located in the horizontal direction, and the cantilever support plate 1 is located directly below the cantilever unloading platform 6; a mounting seat 11 is welded and fixed on the upper surface of the cantilever support plate 1 away from the wall of the building 7, the first hydraulic cylinder 2 is bolted and fixed on the upper surface of the mounting seat 11 in the vertical direction, the first piston rod 21 is movably inserted in the inner cavity of the first hydraulic cylinder 2 from top to bottom in the vertical direction, and the top end of the first piston rod 21 abuts against the bottom of the end of the cantilever unloading platform 6 away from the wall of the building 7. The end of the cantilever unloading platform 6 bends and deforms downward, which can drive the first piston rod 21 to move downward, that is, the downward movement of the first piston rod 21 is equivalent to the deformation amount of the end of the cantilever unloading platform 6.

[0033] A fixing seat 71 is provided on the floor inside the building 7. The second hydraulic cylinder 3 is vertically bolted and fixed on the upper surface of the fixing seat 71. The second piston rod 31 is vertically movably inserted into the inner cavity of the second hydraulic cylinder 3 from top to bottom. Both ends of the connecting pipe 4 are respectively connected to the bottom of the first hydraulic cylinder 2 and the bottom of the second hydraulic cylinder 3. The first hydraulic cylinder 2, the second hydraulic cylinder 3 and the connecting pipe 4 are all filled with hydraulic oil.

[0034] The first piston rod 21 moves downward to squeeze the hydraulic oil in the first hydraulic cylinder 2 into the second hydraulic cylinder 3 through the connecting pipe 4, so that the second piston rod 31 floats. The alarm mechanism 5 is arranged on the second hydraulic cylinder 3, and the alarm mechanism 5 is used to detect the movement of the second piston rod 31. The alarm mechanism 5 detects and records the upward movement of the second piston rod 31, and the deformation amount of the downward bending deformation of the end of the cantilever unloading platform 6 can be obtained by calculation.

[0035] Reference Figure 1 The alarm mechanism 5 includes a travel switch 51 fixedly mounted on the outer wall of the second hydraulic cylinder 3, a controller 52 and an alarm 53. The contact of the travel switch 51 is arranged directly above the second piston rod 31, and a distance for the second piston rod 31 to move upward is reserved between the contact of the travel switch 51 and the top of the second piston rod 31. The controller 52 is electrically connected to the travel switch 51, and the alarm 53 is electrically connected to the controller 52. When the second piston rod 31 moves upward to the top and touches the contact of the travel switch 51, the travel switch 51 converts the mechanical movement of the contact into an electrical signal and transmits it to the controller 52. The controller 52 controls the alarm 53 to sound an alarm, thereby reminding the staff to respond in time.

[0036] In addition, in order to improve the accuracy of the detection results, the inner diameter of the first hydraulic cylinder 2 is set to be larger than the inner diameter of the second hydraulic cylinder 3. The inner cavity radius of the first hydraulic cylinder 2 is denoted as R, the inner cavity radius of the second hydraulic cylinder 3 is denoted as r, the downward displacement of the first piston rod 21 is denoted as L1, and the upward displacement of the second piston rod 31 is denoted as L2. The outflow of hydraulic oil in the first hydraulic cylinder 2 is L1*π*R², and the inflow of hydraulic oil in the second hydraulic cylinder 3 at the same time is L2*π*r². Then it can be seen that L1=L2*r² / R², that is, a small downward displacement of the first piston rod 21 can obtain a larger upward displacement of the second piston rod 31, which amplifies the smaller deformation at the end of the cantilever unloading platform 6, thereby improving the convenience and accuracy of detection.

[0037] Furthermore, in order to facilitate intuitive observation of the deformation amount of the downward bending deformation of the end of the cantilevered unloading platform 6, a scale 311 is also provided on the second piston rod 31. When the alarm mechanism 5 is not activated, the operator can directly obtain the deformation amount of the downward bending deformation of the end of the cantilevered unloading platform 6 by observing the scale 311 on the second piston rod 31.

[0038] Since the first hydraulic cylinder 2 and the first piston rod 21 are subject to the force of the cantilevered unloading platform 6 and there is a risk of tipping and deflecting, a plurality of clamping mechanisms are evenly distributed around the axis of the first hydraulic cylinder 2 on the mounting seat 11. In the embodiment of the present application, three groups of clamping mechanisms are provided.

[0039] The clamping mechanism includes a support block 111 and a screw rod 112. The support block 111 is vertically welded and fixed on the upper surface of the mounting seat 11. A threaded through hole 1111 is opened on the side wall of the support block 111 along the radial direction of the first hydraulic cylinder 2. The screw rod 112 passes through the threaded through hole 1111 and is threadedly connected in the threaded through hole 1111. An anti-slip pad 113 is provided at one end of the screw rod 112 close to the first hydraulic cylinder 2, and the anti-slip pad 113 is made of a rubber pad.

[0040] Tighten the screw 112 so that one end of the screw 112 close to the first hydraulic cylinder 2 is pressed against the outer peripheral wall of the first hydraulic cylinder 2. Through the cooperation of multiple screws 112, the first hydraulic cylinder 2 is stably clamped and fixed, reducing the risk of the first hydraulic cylinder 2 tipping and deflecting.

[0041] Reference Figure 2In order to improve the stability of the cantilever support plate 1 installed on the outer wall of the building 7, thereby improving the accuracy of the detection result, a diagonal brace 8 is provided on the cantilever support plate 1. The inclined brace 8 includes a fixed tube 81, a movable rod 82 and a rotating sleeve 83. One end of the fixed tube 81 is rotatably connected to the end of the cantilever support plate 1 away from the outer wall of the building 7 through a rotating pin 84. The rotating pin 84 is arranged in the transverse direction and is parallel to the outer wall of the building 7. The rotating sleeve 83 is coaxially sleeved on the fixed tube 81, and the rotating sleeve 83 is rotatably connected to the fixed tube 81 around the axis of the fixed tube 81. A threaded hole 831 is coaxially opened on the rotating sleeve 83. The movable rod 82 coaxially passes through the rotating sleeve 83 and is inserted into the fixed tube 81. The movable rod 82 is threadedly connected to the threaded hole 831 of the rotating sleeve 83. The end of the movable rod 82 away from the fixed tube 81 is bolted and fixed to the outer wall of the building 7; the overall length of the inclined brace 8 can be adjusted by rotating the rotating sleeve 83, so that the cantilever support plate 1 is tightened and fixed to the outer wall of the building 7. The inclined brace 8, the cantilever support plate 1 and the outer wall of the building 7 form a triangular stable structure, so that the cantilever support plate 1 is installed more firmly and can withstand a larger load.

[0042] The implementation principle of the deformation monitoring and early warning device at the end of the cantilever unloading platform of the embodiment of the present application is as follows: when in use, the end of the cantilever unloading platform 6 bends and deforms downward, pressing the first piston rod 21 to move downward, squeezing the hydraulic oil in the first hydraulic cylinder 2 to flow into the second hydraulic cylinder 3 through the connecting pipe 4, and driving the second piston rod 31 to move upward; when the second piston rod 31 moves up to the top and touches the contact of the travel switch 51, the travel switch 51 converts the mechanical signal of the contact into an electrical signal and transmits it to the controller 52, and the controller 52 controls the alarm 53 to alarm, thereby reminding the staff to respond in time. The operator can directly observe the upward movement of the second piston rod 31 through the scale 311 on the second piston rod 31 in the room of the building 7, and then obtain the tiny deformation amount of the end of the cantilever unloading platform 6 by calculation. The detection process is low in danger, simple in structure, and easy to use. In addition, the setting of the inclined rod 8 can make the connection between the cantilever support plate 1 and the wall of the building 7 more stable and reliable, reduce the probability of complete deformation of the cantilever support plate 1, and thus improve the accuracy of the detection result. The setting of the clamping mechanism can keep the first hydraulic cylinder 2 in a vertical state, reduce the probability of the first hydraulic cylinder 2 tipping over and deviating, and further improve the accuracy of the detection result.

[0043] The above are all optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A deformation monitoring and early warning device for the end of a cantilever unloading platform, characterized in that: The invention comprises a cantilever support plate (1), a first hydraulic cylinder (2), a first piston rod (21), a second hydraulic cylinder (3), a second piston rod (31) and a connecting pipe (4), wherein the cantilever support plate (1) is used for being fixedly connected to the outer wall of a building (7) in the horizontal direction, the cantilever support plate (1) is located below a cantilever unloading platform (6), the first hydraulic cylinder (2) is vertically arranged on the cantilever support plate (1), the first piston rod (21) is vertically inserted into the first hydraulic cylinder (2), and the top end of the first piston rod (21) abuts against the bottom end of the cantilever unloading platform (6); the second hydraulic cylinder (3) is vertically arranged on the floor of the building (7), the second piston rod (31) is vertically inserted into the second hydraulic cylinder (3), and the two ends of the connecting pipe (4) are respectively connected to the bottom of the first hydraulic cylinder (2) and the second hydraulic cylinder (3); the second hydraulic cylinder (3) is provided with an alarm mechanism (5) for detecting the movement amount of the second piston rod (31).

2. The deformation monitoring and early warning device for the end of a cantilever unloading platform according to claim 1 is characterized in that: The inner diameter of the first hydraulic cylinder (2) is greater than the inner diameter of the second hydraulic cylinder (3).

3. The deformation monitoring and early warning device for the end of a cantilever unloading platform according to claim 1 is characterized in that: The second piston rod (31) is provided with a scale (311).

4. The deformation monitoring and early warning device for the end of a cantilever unloading platform according to claim 1 is characterized in that: The alarm mechanism (5) comprises a travel switch (51), a controller (52) and an alarm (53); the contact of the travel switch (51) is arranged above the second piston rod (31) and a certain distance is reserved from the top end of the second piston rod (31); the travel switch (51) is electrically connected to the controller (52); and the alarm (53) is electrically connected to the controller (52).

5. The deformation monitoring and early warning device for the end of a cantilever unloading platform according to claim 1 is characterized in that: A diagonal brace (8) is provided above the cantilever support plate (1), one end of the diagonal brace (8) is rotatably connected to the cantilever support plate (1), and the other end of the diagonal brace (8) is used for fixed connection to the outer wall of the building (7).

6. The deformation monitoring and early warning device for the end of a cantilever unloading platform according to claim 5 is characterized in that: The inclined brace (8) comprises a fixed cylinder (81), a movable rod (82) and a rotating sleeve (83); one end of the fixed cylinder (81) is rotatably connected to the cantilever support plate (1); the rotating sleeve (83) is coaxially rotatably connected to an end of the fixed cylinder (81) away from the cantilever support plate (1); a threaded hole (831) is coaxially provided on the rotating sleeve (83); the movable rod (82) is threadedly connected to the threaded hole (831); and the end of the movable rod (82) away from the fixed cylinder (81) is used for fixed connection to the outer wall of the building (7).

7. The deformation monitoring and early warning device for the end of a cantilever unloading platform according to claim 1 is characterized in that: A mounting seat (11) is fixedly connected to the cantilever support plate (1), the first hydraulic cylinder (2) is fixedly connected to the top of the mounting seat (11), and a plurality of clamping mechanisms are provided on the mounting seat (11) around the axis of the first hydraulic cylinder (2).

8. The deformation monitoring and early warning device for the end of a cantilever unloading platform according to claim 7 is characterized in that: The clamping mechanism comprises a support block (111) and a screw rod (112); the support block (111) is fixedly connected to the mounting seat (11); the screw rod (112) is threadedly connected to the support block (111); and the screw rod (112) extends radially along the first hydraulic cylinder (2).

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