Adjustable screw type tower crane attachment device axial force detection device

Abstract

The utility model discloses a kind of adjustable screw tower crane attachment device axial force detection devices, it is related to tower crane technical field, including the detection device ontology being installed in tower crane attachment frame pull rod, and the tower crane attachment frame pull rod one end is equipped with attachment support, the detection device ontology includes adjustable screw being arranged in tower crane attachment frame pull rod, screw force device is equipped on the adjustable screw, and intelligent monitoring terminal is connected on the screw force device.The utility model adopts A / B double type end modularization design, realizes deformation self-adapting mechanical-electrical coupling connection by memory alloy pin, forms axial load transmission path, cooperates with radiating force impact hole by built-in ball strain body and synergistic mechanism, realizes three-dimensional strain decoupling measurement based on composite elastic sensitive alloy, realizes the real-time monitoring of attachment axial force, solves the single-point monitoring limitation and operation dangerousness problem existing in traditional manual mode.

Description

Technical Field

[0001] This utility model relates to the field of tower crane technology, specifically an adjustable screw-type tower crane attachment device for axial force detection. Background Technology

[0002] In the construction industry, tower cranes are core lifting equipment for high-rise buildings. As the height of buildings increases, tower cranes should be attached according to the instruction manual. The operational safety performance of tower cranes directly affects the life safety of construction personnel and the overall progress control of the project. It is one of the major hazards on the construction site and a key monitoring target for construction site safety management. Current methods for verifying the load of tower crane attachment devices have certain shortcomings: manual methods require high-altitude and high-risk operations, posing potential safety hazards to personnel; the tower crane attachment environment is complex, with blind spots in the structure and risks of mechanical interference; static testing cannot construct a dynamic load spectrum; and manual calculations and verification by technicians may contain errors due to incorrect methods.

[0003] Based on this, an adjustable screw-type tower crane attachment device for axial force detection is provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable screw-type tower crane attachment device for detecting axial force, in order to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable screw-type tower crane attachment device for axial force detection includes a detection device body installed on the tower crane attachment frame tie rod. One end of the tower crane attachment frame tie rod is provided with an attachment support. The detection device body includes an adjustable screw installed inside the tower crane attachment frame tie rod. The adjustable screw is provided with a screw force measuring device, and an intelligent monitoring terminal is connected to the screw force measuring device.

[0007] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0008] In one alternative embodiment: the screw force measuring device includes a type A end and a type B end, both of which are mounted on an adjustable screw, and the type A end and the type B end are connected by a shape memory alloy pin.

[0009] In one alternative: a radial impact hole is provided on one side of the B-type end, four first shape memory alloy pin holes are provided below the radial impact hole, and a first bolt hole connected to the adjustable screw is provided on the other side of the B-type end.

[0010] In one alternative: the A-type end is provided with four second shape memory alloy pin holes on the side near the B-type end, a radial connecting rod is provided above the second shape memory alloy pin holes, the upper end of the A-type end is provided with a data interface for connecting to the intelligent monitoring terminal, and the side of the A-type end away from the B-type end is provided with a second bolt hole for connecting to the adjustable screw.

[0011] In one alternative: a ball-shaped strainer is embedded in the A-type end, one side of which contacts the B-type end and the other side is connected to a radial connecting rod.

[0012] In one alternative: the spherical strain gauge has an outer skin with evenly distributed elastic strain gauges on its exterior, and a plurality of strain gauge springs are provided inside the outer skin. One end of each strain gauge spring is supported on the inner side of the outer skin. Piezoresistive sensitive circuits are engraved on the outer skin and the strain gauge springs. The elastic strain gauges adopt a composite elastic sensitive alloy structure. A spherical core device is provided at the center of the spherical strain gauge. An amplification circuit and a connecting part are provided inside the spherical core device. The connecting part is used to connect with a radial connecting rod.

[0013] In one alternative: the adjustable screw has an adjustment hole in the middle, and a connecting hole is provided on one side of the adjustment hole, with a connecting bolt inside the connecting hole.

[0014] In one alternative: the intelligent monitoring terminal includes an intelligent monitoring display terminal, which is equipped with a data transmission line, one end of which is connected to a data interface.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention constructs a novel screw-type force sensor, employing an A / B dual-end modular design. It achieves deformation-adaptive mechanical-electrical coupling connection through shape memory alloy pins, forming an axial load transmission path. Through the synergistic mechanism of the built-in spherical strain transformer and radial force-bearing collision holes, it realizes three-dimensional strain decoupling measurement based on a composite elastic sensitive alloy, achieving real-time monitoring of the attached axial force. This solves the limitations of single-point monitoring and operational hazards of traditional manual methods. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the detection device body in this utility model.

[0019] Figure 3 This is a partial schematic diagram of the detection device body in this utility model.

[0020] Figure 4 This is a schematic diagram showing the positions of the spherical strain form and the radial force-bearing collision holes in this utility model.

[0021] Figure 5 This is a schematic diagram of the intelligent monitoring terminal in this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the ball strain variant in this utility model.

[0023] Figure 7 This is a schematic diagram of the A-type end in this utility model.

[0024] Figure 8 This is a schematic diagram of the B-type end in this utility model.

[0025] Figure 9 This is a schematic diagram of the adjustable screw in this utility model.

[0026] Figure reference numerals: 1. Tower crane attachment frame tie rod; 2. Detection device body; 21. Type B end; 211. Radial impact hole; 212. First shape memory alloy pin hole; 213. First bolt hole; 22. Type A end; 221. Second shape memory alloy pin hole; 222. Radial connecting rod; 223. Data interface; 224. Second bolt hole; 23. Ball strain gauge; 231. Outer skin; 232. Strain gauge spring; 233. Ball center device; 24. Adjustable screw; 241. Adjustment hole; 242. Connection hole; 25. Connecting bolt; 3. Attachment support; 4. Intelligent monitoring terminal; 41. Intelligent monitoring display terminal; 42. Data transmission line. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In one embodiment, such as Figure 1 and Figure 2 As shown, an adjustable screw-type tower crane attachment device axial force detection device includes a detection device body 2 installed on the tower crane attachment frame tie rod 1. One end of the tower crane attachment frame tie rod 1 is provided with an attachment support 3. The detection device body 2 includes an adjustable screw 24 installed inside the tower crane attachment frame tie rod 1. The adjustable screw 24 is provided with a screw force measuring device, and an intelligent monitoring terminal 4 is connected to the screw force measuring device. In use, the detection device body 2 is installed on the tower crane attachment frame tie rod 1, and the axial force of the tower crane attachment is monitored in real time through the detection device body 2, and the data is transmitted to the intelligent monitoring terminal 4.

[0029] In one embodiment, such as Figure 2As shown, the screw force measuring device includes a type A end 22 and a type B end 21. Both type A end 22 and type B end 21 are mounted on the adjustable screw 24. Type A end 22 and type B end 21 are connected by a shape memory alloy pin. During installation, type A end 22 and type B end 21 are first connected into a whole by the shape memory alloy pin, and then mounted on the adjustable screw 24.

[0030] In one embodiment, such as Figure 8 As shown, one side of the B-type end 21 is provided with a radial force-bearing collision hole 211, and four first shape memory alloy pin holes 212 are provided below the radial force-bearing collision hole 211. The other side of the B-type end 21 is provided with a first bolt hole 213 connected to the adjustable screw 24. The B-type end 21 is manufactured using advanced machining technology, so that the shape and size of the radial force-bearing collision hole 211 are highly accurate to ensure uniform force distribution when under stress. The positions of the four first shape memory alloy pin holes 212 are strictly calculated and precisely positioned for the installation of shape memory alloy pins, which enhance the stability and reliability of the structure by utilizing their unique properties. The first bolt holes 213 are machined by high-precision drilling and tapping processes, and the connection with the adjustable screw 24 adopts a special anti-loosening design to ensure the connection stability during tower crane operation.

[0031] In one embodiment, such as Figure 7 As shown, the A-type end 22 has four second shape memory alloy pin holes 221 on the side near the B-type end 21. A radial connecting rod 222 is provided above the second shape memory alloy pin holes 221. The upper end of the A-type end 22 has a data interface 223 for connecting with the intelligent monitoring terminal 4. The side of the A-type end 22 away from the B-type end 21 has a second bolt hole 224 for connecting with the adjustable screw 24. The four second shape memory alloy pin holes 221 correspond to and cooperate with the first shape memory alloy pin holes 212 of the B-type end 21. When installing the shape memory alloy pins, a precise assembly process is used to ensure that they are accurately inserted into the holes. The radial connecting rod 222 is made of high-strength alloy material and undergoes a special heat treatment process to enhance its fatigue resistance and ensure the connection reliability during long-term use. The data interface 223 adopts a waterproof and dustproof sealing design to ensure the stability and reliability of data transmission.

[0032] In one embodiment, such as Figure 3 , Figure 4 and Figure 7As shown, a ball strain gauge 23 is embedded in the type A end 22. One side of the ball strain gauge 23 contacts the type B end 21, and the other side is connected to the radial connecting rod 222. Initially, the ball strain gauge 23 is placed in a semi-compressed state in the radial force-bearing collision hole 211. This is set as the ground state. At this time, when the attachment device is not under force, the force sensor is also in the ground state, and the force data is 0. When the attachment device is under pressure, the type B end 21 and the type A end 22 press against each other, and the radial connecting rod 222 pushes the ball strain gauge. The body 23 is further compressed towards the radial force-receiving collision hole 211 and undergoes greater compressive deformation. This is denoted as the compressed state, that is, the deformation amount at this time minus the ground state deformation amount is the force deformation generated during the force process. When the attachment device is under tension, the B-type end 21 and the A-type end 22 are pulled apart in opposite directions, and the radial connecting rod 222, carrying the ball strain body 23, moves away from the radial force-receiving collision hole 211 and undergoes tensile deformation. This is denoted as the tensile state, that is, the deformation amount at this time plus the ground state deformation amount is the force deformation generated during the force process.

[0033] In one embodiment, such as Figure 6 As shown, the spherical strain gauge 23 has an outer skin 231 with evenly distributed elastic strain gauges on its exterior. Inside the outer skin 231 are several strain gauge springs 232. One end of each strain gauge spring 232 is supported on the inner side of the outer skin 231. Piezoresistive sensitive circuits are engraved on the outer skin 231 and the strain gauge springs 232. The elastic strain gauges adopt a composite elastic sensitive alloy structure, which can effectively improve their anti-interference ability and adaptability to different working conditions. A spherical core device 233 is located at the center of the spherical strain gauge 23. An amplifier circuit and a connecting part are provided inside the spherical core device 233. The connecting part is used to connect with the radial connecting rod 222. The amplifier circuit is designed with low noise and high gain to ensure that the weak strain signal is accurately amplified and transmitted.

[0034] In one embodiment, such as Figure 3 and Figure 9 As shown, the adjustable screw 24 has an adjustment hole 241 in the middle. The adjustment hole 241 allows workers to adjust the position of the screw with the help of tools. A connecting hole 242 is provided on one side of the adjustment hole 241. A connecting bolt 25 is provided in the connecting hole 242. The B-type end 21 and the A-type end 22 are fixedly connected to the adjustable screw 24 by the connecting bolt 25.

[0035] In one embodiment, such as Figure 5As shown, the intelligent monitoring terminal 4 includes an intelligent monitoring display terminal 41, which is equipped with a data transmission line 42. One end of the data transmission line 42 is connected to the data interface 223. The intelligent monitoring display terminal 41 uses a high-resolution, high-brightness display screen, which can clearly display the real-time and historical data of the axial force of the tower crane attachment device. It runs an advanced monitoring software system internally, which has multiple functions such as data acquisition, processing, analysis and alarm. The data transmission line 42 uses a shielded cable with strong anti-interference ability to ensure the stability and reliability of data transmission in complex electromagnetic environments. The connection with the data interface 223 adopts a plug-and-play design, which is convenient for installation and maintenance.

[0036] The above embodiment discloses an adjustable screw-type tower crane attachment device for axial force detection. During tower crane attachment installation, type A end 22 and type B end 21 are first connected as a whole by shape memory alloy pins, and then installed on the adjustable screw 24. When the attachment device is under pressure, type B end 21 and type A end 22 press against each other, and the radial connecting rod 222 pushes the ball strain 23 towards the radial force-bearing collision hole 211 for further compression and greater compressive deformation. This is recorded as the compressed state, that is, the deformation amount at this time minus the ground state deformation amount is the force generated during the force-bearing process. Deformation; When the attachment device is under tension, the B-type end 21 and the A-type end 22 are pulled apart in opposite directions. The radial connecting rod 222, carrying the ball strain gauge 23, moves away from the radial force collision hole 211 and undergoes tensile deformation. This is recorded as the tensile state. At this time, the deformation amount plus the ground state deformation amount is the force deformation generated during the force process. At the same time, the deformation amount is converted into an electrical signal and transmitted to the intelligent monitoring terminal 4 through the elastic strain gauge, strain gauge spring 232, piezoresistive sensitive circuit and amplification circuit on the ball strain gauge 23, thereby realizing the real-time monitoring of the axial force of the tower crane attachment device.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An adjustable screw-type tower crane attachment device for axial force detection, comprising a detection device body (2) mounted on a tower crane attachment frame tie rod (1), wherein one end of the tower crane attachment frame tie rod (1) is provided with an attachment support (3), characterized in that, The detection device body (2) includes an adjustable screw (24) installed in the tower crane attachment frame tie rod (1), the adjustable screw (24) is provided with a screw force measuring device, and the screw force measuring device is connected to an intelligent monitoring terminal (4).

2. The adjustable screw-type tower crane attachment device axial force detection device according to claim 1, characterized in that, The screw force measuring device includes an A-type end (22) and a B-type end (21), both of which are mounted on an adjustable screw (24). The A-type end (22) and the B-type end (21) are connected by a shape memory alloy pin.

3. The adjustable screw-type tower crane attachment device axial force detection device according to claim 2, characterized in that, The B-type end (21) has a radial impact hole (211) on one side, and four first memory alloy pin holes (212) are provided below the radial impact hole (211). The B-type end (21) has a first bolt hole (213) connected to the adjustable screw (24) on the other side.

4. The adjustable screw-type tower crane attachment device axial force detection device according to claim 2, characterized in that, The A-type end (22) is provided with four second shape memory alloy pin holes (221) on the side near the B-type end (21). A radial connecting rod (222) is provided above the second shape memory alloy pin holes (221). The upper end of the A-type end (22) is provided with a data interface (223) for connecting with the intelligent monitoring terminal (4). The side of the A-type end (22) away from the B-type end (21) is provided with a second bolt hole (224) for connecting with the adjustable screw (24).

5. The adjustable screw-type tower crane attachment device axial force detection device according to claim 4, characterized in that, The A-type end (22) is inlaid with a ball-strain variant (23), one side of which is in contact with the B-type end (21), and the other side is connected to the radial connecting rod (222).

6. The adjustable screw-type tower crane attachment device axial force detection device according to claim 5, characterized in that, The spherical strain gauge (23) is provided with an outer skin (231) on the outside, on which elastic strain gauges are evenly distributed. The outer skin (231) is provided with a plurality of strain gauge springs (232). One end of the strain gauge springs (232) is supported on the inner side of the outer skin (231). Piezoresistive sensitive circuits are engraved on the outer skin (231) and the strain gauge springs (232). The elastic strain gauges adopt a composite elastic sensitive alloy structure. The spherical strain gauge (23) is provided with a spherical core device (233) at the center. The spherical core device (233) is provided with an amplification circuit and a connecting part. The connecting part is used to connect with a radial connecting rod (222).

7. The adjustable screw-type tower crane attachment device axial force detection device according to claim 1, characterized in that, The adjustable screw (24) has an adjustment hole (241) in the middle, and a connection hole (242) is provided on one side of the adjustment hole (241). A connection bolt (25) is provided in the connection hole (242).

8. The adjustable screw-type tower crane attachment device axial force detection device according to claim 1, characterized in that, The intelligent monitoring terminal (4) includes an intelligent monitoring display terminal (41), and the intelligent monitoring display terminal (41) is provided with a data transmission line (42), one end of which is connected to a data interface (223).

Images