A dual prism lens device and a measuring method for measuring cable elevation and mileage

Abstract

The present invention provides a dual prism lens device and a measuring method for measuring cable elevation and mileage, characterized in that: it comprises a cable clamp and a prism lens, the cable clamp is provided with a cable groove, the cable is placed in the cable groove, the cable clamp clamps the cable through a connecting device, the upper surface of the cable clamp is provided with a first prism lens, the lower surface of the cable clamp is provided with a second prism lens, and the first prism lens and the second prism lens are on the same plane. The beneficial effects of the present invention are: simple structure, convenient operation, can monitor the elevation and mileage of bridge cables and other building cables of different heights and diameters in the later stage, and can check the correctness of the installation elevation and mileage at the same time, wide application range, strong practicality, suitable for popularization and application.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a double prism lens device and a measuring method for measuring cable elevation and mileage. Background Art

[0002] With the rapid development of my country's economy, the improvement of building facilities, in order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology or meet other transportation needs to make travel more convenient. The construction of bridges not only helps to improve the regional road network and promote regional economic and social development, but also large bridges can enhance the regional image to a certain extent and facilitate the travel of residents on both sides of the strait.

[0003] Cable is a general term for optical cables, electrical cables, pipelines, etc. Cables have many uses, mainly for controlling installation, connecting equipment, transmitting electricity, etc. In the process of bridge construction, the measurement of cable elevation and mileage is a key verification and inspection process.

[0004] In bridge construction, the on-site monitoring data of the suspension cables is not accurate after the counterweight is applied to the suspenders. It is heavily affected by the external environment and human factors. Combined with the on-site measurement, there are many factors that affect it, resulting in too rough real-time monitoring. The traditional cable elevation and mileage measurement uses a small prism and a total station control. The traditional measurement method cannot achieve the accuracy and precision specified in the specification. Summary of the invention

[0005] The problem to be solved by the present invention is to provide a device and method for measuring the elevation and mileage of a cable; to solve the problem that after the suspension cable is subjected to a counterweight on the hanger rod, the accuracy of on-site monitoring data is not high and the cable is seriously affected by the external environment and human factors. The present invention not only improves work efficiency, but also improves accuracy and saves time. A dual-prism lens device and a measuring method for measuring the elevation and mileage of a cable are provided.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: a dual prism lens device for measuring cable elevation and mileage, including a cable clamp, the cable clamp including a first clamp and a second clamp, the first clamp and the second clamp are both cylindrical, the first clamp is provided with a first cable groove on the lower surface, and the second clamp is provided with a second cable groove on the upper surface, the cross-section of the first cable groove and the cross-section of the second cable groove are both semicircular, the cable is placed in the first cable groove and the second cable groove, the first clamp and the second clamp are movably connected to clamp the cable, the first clamp is provided with a first prism lens on the upper surface, and the second clamp is provided with a second prism lens on the lower surface, and the first prism lens and the second prism lens are on the same plane.

[0007] Furthermore, the first clamp and the first prism lens, and the second clamp and the second prism lens are connected via a connecting rod.

[0008] Furthermore, the first clamp and the second clamp are connected at one end by a connecting device, and at the other end by a locking device.

[0009] Furthermore, the connecting device includes a first page, a second page and a connecting shaft, a sleeve is provided at the connection between the first page and the second page, there are multiple sleeves, the sleeves are alternately arranged on the first page and the second page, the first page and the second page are aligned up and down, the sleeves are cross-aligned, the connecting shaft is placed in the sleeve, and the first page and the second page rotate along the connecting shaft.

[0010] Furthermore, the locking device includes a locking plate and a locking buckle, the locking plate is placed on the first clamp, the locking buckle is placed on the second clamp, the locking buckle is provided with a locking ring, and the locking plate is placed in the locking ring.

[0011] Furthermore, anti-slip devices are provided in both the first cable trough and the second cable trough.

[0012] Furthermore, a telescopic device is provided on the connecting rod, and the telescopic device includes an outer sleeve and a telescopic rod. A spring buckle is provided at the bottom of the telescopic rod, and a through hole is provided on the outer sleeve. The bottom of the telescopic rod is placed inside the outer sleeve. There are multiple through holes, and the through holes are evenly distributed on the outer sleeve. The spring buckle passes through the through holes.

[0013] Furthermore, the present invention provides a measurement method using a dual prism lens device for measuring cable elevation and mileage, comprising the following steps:

[0014] S1: placing the dual prism device at the measured position, observing the first prism and the second prism through a total station, and calculating the actual mileage value;

[0015] S2: repeatedly adjusting the dual prism lens device to the designed mileage according to the actual mileage value;

[0016] S3: After adjusting the first prism lens and the second prism lens to the designed mileage, observing the first prism lens and the second prism lens, and reading the elevation value of the first prism lens and the elevation value of the second prism lens at the location respectively;

[0017] S4: Calculate the actual elevation value of the cable center by a formula;

[0018] S5: repeatedly adjusting the cable to the designed elevation according to the actual elevation value of the cable center.

[0019] Furthermore, before step S1, it also includes setting up a station, setting up the total station at a measuring station, and adjusting various parameters of the total station.

[0020] Furthermore, the formula in step S4 is: H=(H1+H2) / 2, wherein H1 is the elevation value of the first prism lens; H2 is the elevation value of the second prism lens, and H is the actual elevation value of the cable center.

[0021] The advantages and positive effects of the present invention are:

[0022] 1. The dual-prism lens device of the present invention has a simple structure and is easy to operate. It can monitor the elevation and mileage of bridge cables and other building cables of different heights and diameters in the later stage, and can verify the accuracy of the installation elevation and mileage. It has a wide range of applications, strong practicality, and is suitable for popularization and application.

[0023] 2. The present invention uses a dual-prism lens device to accurately complete the elevation and mileage of each cable boom where the counterweight is hung, averages the elevation, converts and compares the mileage, finds the deviation data of the center position of the position to be measured, averages it, and obtains data with high accuracy, saving time and effort. Compared with traditional monitoring, it saves the time spent on manual measurement and re-measurement at each point and the time for mileage monitoring and ruler calculation, and avoids the situation where the elevation error, mileage error, environmental error, and personnel error caused by environmental and human factors to the same measuring point are large. At the same time, it solves the problem of inaccurate traditional monitoring data to a large extent, and also eliminates the subsequent labor loss required for ruler pulling and round-trip re-measurement, which not only saves manpower but also shortens the construction period and saves money. The quality of the project has been affirmed by all parties involved in the project construction management, and has achieved good economic and social benefits.

[0024] 3. The present invention designs the cable clamp to be a locking type. Through the cooperation of the connecting device and the locking device, the opening, closing and fixing of the first clamp and the second clamp are realized. It can be applied to the measurement of cables of various specifications. By arranging an anti-slip device in the cable groove, the friction between the cable and the cable groove can be increased, which is beneficial to fix the cable and improve the measurement accuracy of the cable elevation and mileage. A telescopic device is arranged on the connecting rod, which can be used in various situations. It is more flexible to use, has a wide range of applications, high utilization rate and strong practicality. Using the measurement method of the present invention, the measurement error is small, it is safe and reliable, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the overall structural front view of the embodiment of the present invention

[0026] Figure 2 The overall structure of the embodiment of the present invention is shown in the right side view.

[0027] Figure 3 The overall structure of the embodiment of the present invention is a top view

[0028] Figure 4 Schematic diagram of the structure of the connecting device according to an embodiment of the present invention

[0029] Figure 5 Schematic diagram of the telescopic device structure of the connecting rod of the embodiment of the present invention

[0030] Figure 6 This is a schematic diagram of the structure of the connecting device that cooperates with the locking device according to an embodiment of the present invention.

[0031] Figure 7 Schematic diagram of the locking device structure in cooperation with the connecting device according to an embodiment of the present invention

[0032] Figure 8 is a flow chart of the measurement method according to an embodiment of the present invention

[0033] Fig. 9 is a cross-sectional view of the measurement operation of an embodiment of the present invention

[0034] Fig.10 The measurement calculation principle diagram of the embodiment of the present invention is

[0035] In the figure:

[0036] 1. First prism lens 2. Connecting rod 3. First clamp

[0037] 4. Connecting device 5. Second clamp 6. Second prism lens

[0038] 7. Second cable trough 8. Anti-slip device 9. Locking device

[0039] 10. First cable trough 11. Prism lens 12. Cable clamp

[0040] 13. Cable slot 14. Connection ear 15. Connection hole

[0041] 16. Cable 17. Telescopic device 18. Telescopic rod

[0042] 19, spring buckle 20, through hole 21, outer sleeve

[0043] 22, first leaf 23, connecting shaft 24, second leaf

[0044] 25, shaft sleeve 26, locking plate 27, locking ring

[0045] 28. Locking buckle 29. Total station 30. Dual prism lens device DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The embodiments of the present invention are further described below in conjunction with the accompanying drawings:

[0050] like Figure 1-3 As shown, a dual prism lens device for measuring cable elevation and mileage includes a cable clamp 12 and a prism lens 11. The cable clamp 12 is provided with a cable groove 13, and the cable clamp 12 includes a first clamp 3 and a second clamp 5. The first clamp 3 and the second clamp 5 are both cylindrical. The first clamp 3 is provided with a first cable groove 10 on the lower surface, and the second clamp 5 is provided with a second cable groove 7 on the upper surface. The cross-sections of the first cable groove 10 and the second cable groove 7 are both semicircular. The cable 16 is placed in the cable groove 13. The first clamp 3 and the second clamp 5 are movably connected to clamp the cable 16. The first prism lens 1 is provided on the upper surface of the first clamp 3, and the second prism lens 6 is provided on the lower surface of the second clamp 5. The first prism lens 1 and the second prism lens 6 are on the same plane.

[0051] The cable clamp 12 is connected to the prism lens 11 through the connecting rod 2. The connecting rod 2 is provided with a telescopic device 17, which can be of various structures. The telescopic device 17 is any device that can realize the free change of the length of the connecting rod 2. The telescopic device 17 provided in this embodiment is as follows: Figure 5The telescopic device 17 includes an outer sleeve 21 and a telescopic rod 18. A spring buckle 19 is provided at the bottom of the telescopic rod 18. A through hole 20 is provided on the outer sleeve 21. The bottom of the telescopic rod 18 is placed inside the outer sleeve 21. There are multiple through holes 20, which are evenly distributed on the outer sleeve 21. The spring buckle 19 passes through the through holes 20.

[0052] The first clamp 3 and the second clamp 5 are connected by a connecting device 4. The connecting device 4 can be of various structures as long as the first clamp 3 and the second clamp 5 can be opened and closed freely. Figure 4 As shown, a connection device 4 provided in this embodiment is shown. The connection device 4 is a bolt and a nut. The cable clamp 12 is provided with connection ears 14 at both ends. The connection ears 14 are provided with connection holes 15. The bolts are placed in the connection holes 15, and the nuts fix the bolts. The number of connection holes 15 and bolts and nuts can be freely selected according to the length of the connection ears 14.

[0053] Preferably, the first clamp 3 and the second clamp 5 are connected at one end by a connecting device 4 and at the other end by a locking device 9. Figure 6 The connecting device 4 comprises a first leaf 22, a second leaf 24 and a connecting shaft 23. A shaft sleeve 25 is provided at the connection between the first leaf 22 and the second leaf 24. There are a plurality of shaft sleeves 25. The shaft sleeves 25 are alternately arranged on the first leaf 22 and the second leaf 24. The first leaf 22 and the second leaf 24 are aligned vertically, the shaft sleeves 25 are cross-aligned, the connecting shaft 23 is placed in the shaft sleeve 25, and the first leaf 22 and the second leaf 24 rotate along the connecting shaft 23.

[0054] like Figure 7 As shown, the locking device 9 includes a locking piece 26 and a locking buckle 28. The locking piece 26 is placed on the first clamp 3, and the locking buckle 28 is placed on the second clamp 5. The locking buckle 28 is provided with a locking ring 27, and the locking piece 26 is placed in the locking ring 27. Through the cooperation of the connecting device 4 and the locking device 9, the first clamp 3 and the second clamp 5 can be opened and closed freely, and there is no need for multiple proofreading during assembly, which saves time and effort.

[0055] Preferably, an anti-skid device 8 is provided in the cable groove 13. The anti-skid device 8 can be of various structures, which can increase the friction between the cable 16 and the cable groove 13, facilitate fixing the cable 16, and improve the measurement accuracy of the elevation and mileage of the cable 16. The anti-skid device 8 provided in this embodiment is a tooth joint, and the height and number can be freely controlled according to actual needs.

[0056] Using the device provided by the embodiment of the present invention, the specific measurement method is as follows Figure 8 As shown, the following steps are included:

[0057] S1: Construction preparation, that is, before measurement, the measurement control points are checked: the rear-view prism is placed on another reference point and leveled before observation. If the coordinate error of the measuring station is within the allowable range, it can be used continuously. If it is outside the error range, the rear-view prism is readjusted.

[0058] S2: Setting up the station, that is, setting up the total station 29 at the observation point, leveling it, and modifying various parameters of the total station 29 such as the atmosphere and backsight.

[0059] S3: Mileage observation, that is, placing the dual prism lens device 30 at the measured position, and using the total station 29 to observe the first prism lens 1 and the second prism lens 6 to calculate the actual mileage value. Specifically, the "crosshairs" in the eyepiece are respectively aimed at the "crosshairs" on the first prism lens 1 and the second prism lens 6, and the mode in the instrument is switched to the horizontal projection distance measurement in the measurement mode. The two readings are used as the reference, and the actual mileage value is calculated. Fig. 9 , Fig.10 The mileage deviation of the cable 16 to be determined is obtained by using the mathematical principles in.

[0060] S4: Position adjustment, that is, repeatedly adjusting the dual-prism lens device 30 to the designed mileage according to the actual mileage value.

[0061] S5: Elevation observation, such as Fig. 9 As shown, after adjusting the prism lens 11 to the designed mileage, observe the first prism lens 1 and the second prism lens 6, and read the elevation values ​​of the first prism lens 1 and the second prism lens 6 at their respective locations. Specifically, aim the "crosshairs" in the eyepiece at the "crosshairs" of the first prism lens 1 and the second prism lens 6, respectively, wait for the mode in the instrument to switch to the elevation measurement mode in the measurement mode, and read the elevation H1 of the first prism lens 1 and the elevation H2 of the second prism lens 6 in the dual prism lens device 30 respectively.

[0062] S6: Calculate the elevation, that is, calculate the actual elevation value of the cable center through the formula. The formula is H = (H1 + H2) / 2, such as Fig.10 As shown, H1 is the elevation value of the first prism lens 1, that is, H2 is the elevation value of the second prism lens 6, and H is the actual elevation value of the cable center.

[0063] S7: Adjust the height of the cable 16, that is, repeatedly adjust the cable 16 to the designed elevation according to the actual elevation value of the center of the cable 16. Specifically, the elevation result obtained by observation and calculation is compared with the monitoring data, and the monitoring party issues an instruction to adjust the cable ends in the tensioning grooves at both ends of the cable 16 according to the result, so as to adjust the height of the cable 16.

[0064] S8: Verification, that is, after all cables 16 are adjusted, observe for three days according to the plan. If the data is consistent with the monitoring data, enter the next construction stage.

[0065] The embodiment of the present invention takes the measurement of the elevation and mileage of the first main cable with a diameter of 70 mm of a suspension bridge as an example, and the specific production process is as follows:

[0066] The first clamp 3 and the second clamp 5 made of cast steel are used to form the cable clamp 12. The first clamp 3 and the second clamp 5 are respectively provided with connecting ears 14 at both ends. The width of the connecting ears 14 is 50mm. Two connecting holes 15 are respectively provided on the connecting ears 14 on each side. The diameter of the connecting holes 15 is 12.5mm, and they are fixed with M12*50 bolts and nuts. The outer dimensions of the cable clamp 12 after the first clamp 3 and the second clamp 5 are combined are 230mm*65mm*100mm. The center of the cable clamp 12 is provided with a cable groove 13. The diameter of the cable groove 13 is 75mm. A tooth joint for improving friction is reserved in the cable groove 13. The height of the tooth joint is 2mm. The upper and lower ends of the cable clamp 12 are welded with connecting rods 2. The material of the connecting rod 2 is a stainless steel pipe. The other end of the connecting rod 2 is connected to the prism lens 11 of the total station 29 by bolts and nuts. When the cable clamp 12 and the prism lens 11 connecting rod 2 are welded and fixed in the factory, ensure that the two prism lens 11 connecting rods 2 are coaxial and perpendicular to the cable clamp 12. When the measured cable diameter changes, the cable clamp 12 and the four sets of bolts and nuts adapt to the changed cable 16 diameter or pipe diameter by adjusting the degree of tightening the nuts.

[0067] When applied, the accuracy of the device is verified by simply measuring the coordinates of known points within a close range of 10 meters. The cable clamp 12 and the cable to be measured 16 are pre-locked in advance. The clamp size is appropriate. Cotton gaskets can also be added to tighten the clamp. During the measurement process of the total station 29, the data of the upper and lower lenses are collected and averaged to obtain the final monitoring results.

[0068] The advantages and positive effects of the present invention are:

[0069] 1. The dual-prism lens device of the present invention has a simple structure and is easy to operate. It can monitor the elevation and mileage of bridge cables and other building cables of different heights and diameters in the later stage, and can verify the accuracy of the installation elevation and mileage. It has a wide range of applications, strong practicality, and is suitable for popularization and application.

[0070] 2. The present invention uses a dual-prism lens device to accurately complete the elevation and mileage of each cable boom where the counterweight is hung, averages the elevation, converts and compares the mileage, finds the deviation data of the center position of the position to be measured, averages it, and obtains data with high accuracy, saving time and effort. Compared with traditional monitoring, it saves the time spent on manual measurement and re-measurement at each point and the time for mileage monitoring and ruler calculation, and avoids the situation where the elevation error, mileage error, environmental error, and personnel error caused by environmental and human factors to the same measuring point are large. At the same time, it solves the problem of inaccurate traditional monitoring data to a large extent, and also eliminates the subsequent labor loss required for ruler pulling and round-trip re-measurement, which not only saves manpower but also shortens the construction period and saves money. The quality of the project has been affirmed by all parties involved in the project construction management, and has achieved good economic and social benefits.

[0071] 3. The present invention designs the cable clamp to be a locking type. Through the cooperation of the connecting device and the locking device, the opening, closing and fixing of the first clamp and the second clamp are realized. It can be applied to the measurement of cables of various specifications. By arranging an anti-slip device in the cable groove, the friction between the cable and the cable groove can be increased, which is beneficial to fix the cable and improve the measurement accuracy of the cable elevation and mileage. A telescopic device is arranged on the connecting rod, which can be used in various situations. It is more flexible to use, has a wide range of applications, high utilization rate and strong practicality. Using the measurement method of the present invention, the measurement error is small, it is safe and reliable, and the work efficiency is improved.

[0072] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A dual prism lens device for measuring cable elevation and mileage, characterized in that: The cable clamp comprises a first clamp and a second clamp, the first clamp and the second clamp are both columnar, a first cable groove is provided on the lower surface of the first clamp, a second cable groove is provided on the upper surface of the second clamp, the cross-sections of the first cable groove and the second cable groove are both semicircular, cables are placed in the first cable groove and the second cable groove, the first clamp and the second clamp are movably connected to clamp the cables, a first prism lens is provided on the upper surface of the first clamp, a second prism lens is provided on the lower surface of the second clamp, and the first prism lens and the second prism lens are on the same plane; The first clamp and the first prism lens, the second clamp and the second prism lens are all connected via a connecting rod; The first clamp and the second clamp are connected at one end by a connecting device and at the other end by a locking device; The connecting device comprises a first sheet, a second sheet and a connecting shaft, a sleeve is provided at the connection between the first sheet and the second sheet, the sleeves are multiple, the sleeves are alternately arranged on the first sheet and the second sheet, the first sheet and the second sheet are aligned up and down, the sleeves are cross-aligned, the connecting shaft is placed in the sleeve, and the first sheet and the second sheet rotate along the connecting shaft; The locking device comprises a locking piece and a locking buckle, wherein the locking piece is placed on the first clamp, the locking buckle is placed on the second clamp, a locking ring is provided on the locking buckle, and the locking piece is placed inside the locking ring; Anti-slip devices are provided in the first cable trough and the second cable trough; The connecting rod is provided with a telescopic device, which includes an outer sleeve and a telescopic rod. A spring buckle is provided at the bottom of the telescopic rod. A through hole is provided on the outer sleeve. The bottom of the telescopic rod is placed inside the outer sleeve. There are multiple through holes, which are evenly distributed on the outer sleeve, and the spring buckle passes through the through holes.

2. A method for measuring cable elevation and mileage using a dual prism lens device according to claim 1, characterized in that: The following steps are included: S1: placing the dual prism device at the measured position, observing the first prism and the second prism through a total station, and calculating the actual mileage value; S2: repeatedly adjusting the dual prism lens device to the designed mileage according to the actual mileage value; S3: After adjusting the first prism lens and the second prism lens to the designed mileage, observing the first prism lens and the second prism lens, and reading the elevation value of the first prism lens and the elevation value of the second prism lens at the location respectively; S4: Calculate the actual elevation value of the cable center by a formula; S5: repeatedly adjusting the cable to the designed elevation according to the actual elevation value of the cable center; Before step S1, the method further includes setting up a station, setting up the total station at a measuring station, and adjusting various parameters of the total station; The formula in step S4 is: H=(H1+H2) / 2, where H1 is the elevation value of the first prism lens; H2 is the elevation value of the second prism lens, and H is the actual elevation value of the cable center.

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