Load-bearing safety monitoring device of thermal power plant chimney construction lifting platform

Abstract

The utility model discloses a load-bearing safety monitoring device of a thermal power plant chimney construction lifting platform, which comprises a platform section, a load-bearing frame is arranged at one end of the platform section, and a first pull rod, a second pull rod and a third pull rod are arranged on the load-bearing frame. Connecting pieces between the pull rod I, the pull rod II and the pull rod III and the platform section are a pin shaft sensor 1, a pin shaft sensor 2 and a pin shaft sensor 3 respectively; the control box is installed at the other end of the top of the platform section, a box door is hinged to one end of the control box, and a display device is installed at one end of the box door; the safety monitoring device has the advantages of achieving real-time monitoring of load-bearing safety of a thermal power plant chimney construction lifting platform, improving safety performance of a construction lifting machine, being capable of finding and preventing overload in time, reducing risks of safety accidents in the construction process, being simple in structure, convenient to operate and easy to install and apply on an existing lifting platform, and improving safety performance of the construction lifting machine. And the practical value is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal power plant construction safety monitoring, and in particular relates to a load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant. Background Art

[0002] During the chimney construction of a thermal power plant, the safety of the lifting platform of the construction elevator is of vital importance. Once the load exceeds the design load, it will pose a serious threat to the safety of the construction workers. The platform mentioned in this application is specially designed for chimney construction using the SC200 / 200 multi-functional variable frequency speed regulation construction elevator in the mold turning construction process. It provides a transition platform for the construction workers, objects and materials from the elevator to the construction plane, where the materials refer to steel bars, cement, etc. The maximum load that can be carried on the platform is ≤1000kg, and the platform allows a local uniform load of ≤200kg / ㎡. At present, whether the load exceeds the design load only relies on the empirical method, and the safety management personnel make subjective judgments on the current load. When a large amount of cement and steel bars are transported during the mold turning stage, it is easy to cause overloading, and the existing technology lacks real-time monitoring of the load-bearing safety of the lifting platform. Utility Model Content

[0003] The utility model aims to provide a load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant, so as to ensure the safe and smooth progress of the construction process.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: a load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant, comprising:

[0005] A platform section, one end of which is provided with a load-bearing frame, and the load-bearing frame is provided with a pull rod 1, a pull rod 2, and a pull rod 3, and the connecting pieces between the pull rod 1, the pull rod 2, the pull rod 3 and the platform section are respectively a pin sensor 1, a pin sensor 2, and a pin sensor 3;

[0006] A control box, the control box is installed at the other end of the top of the platform section, and a box door is hinged at one end of the control box, a display device is installed at one end of the box door, a control device and a wireless data transmission device are installed inside the control box, and the wireless data transmission device is communicatively connected with the control device;

[0007] A data processing device, which is installed inside the control box and is respectively connected to the pin sensor 1, the pin sensor 2, the pin sensor 3, and the control device for communication;

[0008] A cloud platform, the cloud platform being communicatively connected with the wireless data transmission device;

[0009] An alarm device is communicatively connected with the control device.

[0010] Preferably, the pin sensor 1, the pin sensor 2, and the pin sensor 3 are all composed of a pin, a strain gauge, and a measurement circuit.

[0011] Preferably, the wireless data transmission device is a 4G module, and the display device is a liquid crystal display screen.

[0012] Preferably, the alarm device includes a broadcasting device and a camera device, which are installed on the top of the construction elevator, and the camera faces the lifting platform.

[0013] Preferably, it also includes a support plate symmetrically installed on the top of the control box, a support column arranged on the top of the support plate, and a protective frame arranged on the top of the support column.

[0014] Preferably, it further comprises a fixing frame installed at one end of the cabinet door, and the fixing frame is located outside the display device.

[0015] Preferably, it further comprises a transparent cover hinged to one end of the fixing frame, the transparent cover is provided with a protrusion, and one end of the fixing frame is provided with a groove for the protrusion to be inserted.

[0016] Preferably, it also includes a spring symmetrically installed on the inner side of the groove, and a clip arranged at one end of the spring, and the two clips can be clamped on the outer side of the protrusion.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] It realizes the real-time monitoring of the load-bearing safety of the chimney construction lifting platform of the thermal power plant, improves the safety performance of the construction elevator, can timely discover and prevent overloading, and reduce the risk of safety accidents during construction. It has a simple structure, convenient operation, and is easy to install and apply on the existing lifting platform, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the control box of the utility model;

[0021] Figure 3 For the utility model Figure 1 Schematic diagram of the enlarged structure of area B;

[0022] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged structure of the F region;

[0023] Figure 5 For the utility model Figure 4 Schematic diagram of the enlarged structure of the G region;

[0024] Figure 6 This is a schematic diagram of the monitoring device of the utility model;

[0025] In the figure: 1, pull rod one; 2, pull rod two; 3, pull rod three; 4, load-bearing frame; 5, control box; 51, box door; 510, display device; 6, protective frame; 7, support plate; 71, support column; 8, platform section; 9, fixing frame; 91, transparent cover; 910, protrusion; 92, groove; 93, spring; 930, clip. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] See also Figure 1 , Figure 2 and Figure 6 , is the first embodiment of the utility model, the lifting platform provided by this embodiment includes a platform section 8, a load-bearing frame 4 is arranged at one end of the platform section 8, and a pull rod 1, a pull rod 2, and a pull rod 3 are arranged on the load-bearing frame 4, S1 is a connecting piece between the pull rod 1 and the platform section 8, namely, a pin sensor 1; S2 is a connecting piece between the pull rod 2 and the platform section 8, namely, a pin sensor 2; S3 is a connecting piece between the pull rod 3 and the platform section 8, namely, a pin sensor 3; 81 is a section from the initial end of the platform section 8 to S1, that is, L1=1m; 82 is a section from S1 to S2, that is, L2=2m; 83 is a section from S2 to S3, that is, L3=3m; 84 is a section from S3 to the end of the platform section 8, that is, L4=3m.

[0029] A load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant comprises: a sensor device, a data processing device, a display device, a wireless data transmission device, a power supply device, a control device and an alarm device.

[0030] The sensor device is a pin sensor, that is, a connecting piece between the pull rod and the platform section 8, which is used to measure the tension generated by the pull rod on the platform section 8 in real time. The pin sensor is composed of a pin, a strain gauge and a measuring circuit. When the pull rod is subjected to force, an upward pulling force will be generated on the pin, and the strain gauge will undergo a slight deformation. The deformation is sensed by the strain gauge and converted into a change in resistance value. The bridge circuit will generate an output voltage. The strain resistance on the strain gauge is proportional to the degree of strain of the strain gauge, that is, the pin sensor outputs a voltage signal when subjected to force, which is processed by a data processing device. In this application, three pin sensors are used in total, which are respectively used to connect pull rod 1, pull rod 2, and pull rod 3.

[0031] The data processing device, i.e., the digital signal processing circuit, is used to receive the voltage signal output by the sensor device under tension, and convert the voltage signal into a current signal, and then convert it into a digital signal through filtering and signal processing steps;

[0032] The display device 510 is connected to the data processing device and is used to display the load-bearing status and warning status of the platform in real time. The display device 510 uses a liquid crystal display screen to intuitively display the load-bearing status of the platform, so that construction personnel and management personnel can understand the load-bearing status of the platform.

[0033] Wireless data transmission device: connects the data processing device and the cloud service platform to transmit real-time monitoring data to the cloud service platform. The wireless data transmission device adopts a 4G module to ensure the stability and real-time performance of data transmission;

[0034] Control device: connected to the data processing unit and the warning device, used to control the issuance of warning signals according to real-time load data;

[0035] Alarm device: It includes a broadcasting device and a camera device, which are installed on the top of the construction elevator. The camera faces the lifting platform. When it detects that the design load is exceeded or the set warning threshold is exceeded, the camera takes a picture of the current situation of the lifting platform and transmits it back to the cloud server; the broadcasting device issues an overload alarm or warning.

[0036] A load-bearing early warning method for a chimney construction lifting platform in a thermal power plant,

[0037] Define the force conditions of S1, S2, and S3 as F1, F2, and F3 respectively. When the lifting platform is empty, F1 = F2 = F3 = 0;

[0038] Early warning method for the maximum load carried by the lifting platform;

[0039] The maximum load that can be carried on the lifting platform is ≤1000kg. When a 1000kg weight is placed on the lifting platform, the force on S1 is measured to be F. max1 , the force on S2 is F max2 , the force on S3 is Fmax3 During the use of the lifting platform, it is monitored that F1 ≥ F max1 |F2≥F max2 |F3≥F max3 When the alarm device is triggered, the camera takes a picture of the current situation of the lifting platform and transmits it back to the cloud server; the broadcasting device issues an overload alarm;

[0040] Definition F max10 =90%*F max1 、F max20 =90%*F max2 、F max30 =90%*F max3 That is, when the tension on the pull rod 1 1, the pull rod 2 2, and the pull rod 3 3 is 90% of the maximum load, the warning task of the alarm device is triggered, that is, the camera takes a picture of the current situation of the lifting platform and transmits it back to the cloud server; the broadcasting device issues an overload warning.

[0041] Early warning method for partial and uniform loads carried by lifting platforms:

[0042] The uniformly distributed load on the lifting platform is ≤200kg / ㎡;

[0043] Step 1: When a 200kg weight is evenly placed on section L1 and the rest of the sections are empty, record the tensile force F on sensor S1. max11 During the use of the lifting platform, it is monitored that F1 ≥ F max11时 , triggering the local uniform load alarm;

[0044] Step 2: When a 400kg weight is evenly placed on the L2 section and the rest of the sections are empty, the pulling force values ​​of sensors S1 and S2 are recorded as F and F respectively. max12 and F max22 During the use of the lifting platform, it is monitored that F1 ≥ F max12 |F2≥F max22 When the local uniform load alarm is triggered;

[0045] Step 3: When a 600kg weight is evenly placed on the L3 section and the rest of the sections are empty, the pulling force values ​​of sensors S2 and S3 are recorded as F and F respectively. max23 and F max33 During the use of the lifting platform, it is detected that F2 ≥ F max23 |F3≥F max33 When the local uniform load alarm is triggered;

[0046] Step 4: When a 600kg weight is evenly placed on the L4 section and the rest of the sections are empty, record the tension value of sensor S3 as F. max34 During the use of the lifting platform, it is detected that F3 ≥ F max34When the local uniform load alarm is triggered;

[0047] The specific details of the local uniform load alarm are: the camera captures the current situation of the lifting platform and transmits it back to the cloud server; the broadcasting device issues a local overload alarm.

[0048] The specific local uniform load warning is: when the tension on rod 1 1, rod 2 2, and rod 3 3 is 90% of the maximum load, the alarm device warning task is triggered, that is, the camera takes a picture of the current situation of the lifting platform and transmits it back to the cloud server; the broadcasting device issues a local overload warning.

[0049] Example 2

[0050] See also Figure 1-Figure 6 , which is the second embodiment of the utility model, is based on the previous embodiment, and the difference is that:

[0051] It also includes a support plate 7 symmetrically installed on the top of the control box 5, which realizes the addition of the support plate 7, a support column 71 arranged on the top of the support plate 7, the support plate 7 increases the support for the support column 71, and a protective frame 6 arranged on the top of the support column 71, the support column 71 increases the support for the protective frame 6, and the rainproof performance is increased through the protective frame.

[0052] It also includes a fixing frame 9 installed at one end of the box door 51 , so that the fixing frame 9 is added. The fixing frame 9 is located outside the display device 510 .

[0053] It also includes a transparent cover 91 hinged to one end of the fixed frame 9, the transparent cover 91 increases the protection of the display device 510, and a protrusion 910 is provided on the transparent cover 91, thereby realizing the addition of the protrusion 910, and a groove 92 for the protrusion 910 to be inserted is opened at one end of the fixed frame 9, thereby realizing the opening of the groove 92.

[0054] It also includes a spring 93 symmetrically installed on the inner side of the groove 92, which realizes the addition of the spring 93, and a clip 930 arranged at one end of the spring 93, which realizes the addition of the clip 930. The two clips 930 can be clamped on the outside of the protrusion 910, and the inserted protrusion 910 is reinforced by the cooperation of the spring 93 and the clip 930, thereby improving the performance of the transparent cover 91 covering the fixed frame 9.

[0055] Although the embodiments of the present invention have been shown and described, as detailed above, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A load-bearing safety monitoring device for a chimney construction lifting platform in a thermal power plant, characterized in that: include A platform section (8), wherein a load-bearing frame (4) is disposed at one end of the platform section (8), and a pull rod 1 (1), a pull rod 2 (2), and a pull rod 3 (3) are disposed on the load-bearing frame (4), and connecting members between the pull rod 1 (1), the pull rod 2 (2), the pull rod 3 (3) and the platform section (8) are pin sensor 1, pin sensor 2, and pin sensor 3 respectively; A control box (5), the control box (5) being mounted on the other end of the top of the platform section (8), and a box door (51) being hinged at one end of the control box (5), a display device (510) being mounted at one end of the box door (51), a control device and a wireless data transmission device being mounted inside the control box (5), and the wireless data transmission device being communicatively connected with the control device; A data processing device, the data processing device is installed inside the control box (5), and the data processing device is respectively connected to the pin sensor 1, the pin sensor 2, the pin sensor 3, and the control device for communication; A cloud platform, the cloud platform being communicatively connected with the wireless data transmission device; An alarm device is communicatively connected with the control device.

2. The load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant according to claim 1 is characterized by: The pin sensor 1, the pin sensor 2 and the pin sensor 3 are all composed of a pin, a strain gauge and a measuring circuit.

3. The load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant according to claim 1 is characterized by: The wireless data transmission device is a 4G module, and the display device (510) is a liquid crystal display screen.

4. The load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant according to claim 1 is characterized by: The alarm device includes a broadcasting device and a camera device, which are installed on the top of the construction elevator, and the camera is facing the lifting platform.

5. The load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant according to claim 1, characterized in that: It also includes a support plate (7) symmetrically mounted on the top of the control box (5), a support column (71) arranged on the top of the support plate (7), and a protective frame (6) arranged on the top of the support column (71).

6. The load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant according to claim 1, characterized in that: It also includes a fixing frame (9) installed at one end of the box door (51), and the fixing frame (9) is located outside the display device (510).

7. The load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant according to claim 6, characterized in that: It also comprises a transparent cover (91) hinged to one end of the fixed frame (9), the transparent cover (91) is provided with a protrusion (910), and one end of the fixed frame (9) is provided with a groove (92) for the protrusion (910) to be inserted.

8. The load-bearing safety monitoring device for a chimney construction lifting platform of a thermal power plant according to claim 7, characterized in that: It also includes a spring (93) symmetrically mounted on the inner side of the groove (92), and a clamping piece (930) arranged at one end of the spring (93). The two clamping pieces (930) can be clamped on the outer side of the protrusion (910).

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