Winch laser meter counter and winch type high-precision steel strand blanking metering system

Abstract

The utility model discloses a capstan laser meter counter and a capstan type high-precision steel strand blanking metering system, and relates to prestressed steel strand blanking equipment, the meter counter comprises a meter counter support, a capstan, a deconcentrator, a rotating shaft and a laser counter; the two ends of the deconcentrator are connected with the meter counter support and are evenly distributed on the periphery of the meter counter support. Two ends of the rotating shaft are fixedly connected with the meter counter bracket; the middle of the rotating shaft is connected with the winch through a bearing; the receiving and transmitting ends of the laser counter are fixedly connected with the upper end and the lower end of the meter counter support respectively, laser signals transmitted by the transmitting end of the laser counter penetrate through the winch and then are received by the receiving end of the laser counter, and the signal output end of the laser counter is connected with the signal input end of the control system. The system comprises a driving disc, the winch laser meter counter, a material cutting table, a driven disc and the control system which are sequentially connected together through a steel strand. According to the utility model, the phenomena of slipping and shaking can be reduced, the steel strand blanking precision and the cable hanging efficiency can be improved, and the requirement on a blanking site is low.

Description

Technical Field

[0001] The utility model relates to a prestressed steel strand cutting equipment, in particular to a winch laser length meter and a winch type high-precision steel strand cutting metering system. Background Art

[0002] The steel strand stay cable is composed of multiple strands of φ15.2 steel strands wrapped with HDPE sheath tubes. Due to its superiority of "breaking the whole into parts", the steel strand stay cable is suitable for bridges with large spans and small tensioning spaces. Moreover, the steel strand stay cable is convenient for transportation and can adapt to various harsh transportation conditions, making great contributions to the construction of mountain bridges. Because of the special property of "breaking the whole into parts" of the steel strand stay cable, the steel strand stay cable needs to be installed at the construction site. The steel strands that make up the stay cable bundle are usually cut to a fixed length. There are two cutting methods at the construction site: cutting on the site and cutting while hanging the cable. For cutting on the site, a long and narrow site is required to completely release the steel strands according to the designed length to complete the cutting of the steel strands, which has high requirements for the site; for cutting while hanging the cable, marks need to be made in the air and the steel strands are cut during the cable hanging process, which affects the cable hanging efficiency and the accuracy is lower than that of cutting on the site. When the site is limited, a cable length meter can be used to assist in the measurement of the cutting length of the steel strands. However, the highest accuracy of the cable length meter can only reach about 1%. In the case of the cable length meter slipping, shaking, and wearing, the accuracy cannot be guaranteed.

[0003] At present, cable length meters can be divided into mechanical length meters and laser length meters according to the working principle. The currently known mechanical length meters include wheel type length meters and caterpillar type length meters. Slipping, shaking, contact surface wear, and cable tension of the mechanical length meter are the main factors affecting the measurement accuracy of the mechanical length meter; the laser length meter is a length meter for high-end requirements. The laser length meter has high measurement accuracy for cables with smooth and regular surfaces. However, the measurement of stranded cables with convex, concave, intermittent surfaces is slightly inferior. Therefore, the errors of the above two types of length meters in the measurement of the cutting length of steel strands are still relatively large. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a winch laser length meter and a winch type high-precision steel strand cutting metering system, so as to reduce the phenomena of slipping and shaking, have low requirements for the cutting site, and can adapt to the steel strand cutting operation on small sites while improving the cutting accuracy of steel strands.

[0005] The technical solution for solving the above technical problems is as follows: A winch laser length meter, comprising a length meter support, a winch, a wire divider, a rotating shaft, and a laser counter; both ends of the wire divider are connected to the length meter support and are evenly distributed around the length meter support; both ends of the rotating shaft are fixedly connected to the length meter support, and the middle part of the rotating shaft is connected to the winch through a bearing; the transmitting and receiving ends of the laser counter are respectively fixedly connected to the upper and lower ends of the length meter support, and the laser signal emitted by the transmitting end of the laser counter passes through the winch and is received by the receiving end of the laser counter, and the signal output end of the laser counter is connected to the signal input end of the control system.

[0006] A further technical solution of the present utility model is: The laser counter includes a laser emitter and a receiver, which are respectively fixedly connected to the upper and lower ends of the length meter support. The laser signal emitted by the laser emitter passes through the winch and is received by the receiver for counting, and the signal output end of the laser emitter is connected to the signal input end of the control system.

[0007] A still further technical solution of the present utility model is: The winch includes a top plate, a barrel wall, and a bottom plate. The top plate is provided with an upper rotating shaft hole at the central part for cooperating with the bearing; the diameter of the bottom plate is larger than that of the top plate, and the bottom plate is provided with a lower rotating shaft hole at the central part for cooperating with the bearing. The bottom plate is also evenly and densely provided with a plurality of circular holes for passing the laser signal along the circumference at the edge position larger than the top plate; the top plate and the bottom plate are fixedly connected together through the barrel wall.

[0008] Another technical solution of the present utility model is: A winch type high-precision steel strand cutting and metering system, comprising a driving disk, a winch laser length meter, a cutting table, a driven disk, and a control system connected in sequence through a steel strand; the winch laser length meter is the winch laser length meter as claimed in the claims, and the control system is the control system as claimed in the claims. The signal input and output ends of the control system are respectively connected to the driven disk and the driving disk.

[0009] A further technical solution of the present utility model is: The driven disk includes a wire releasing frame body, a core cylinder I, a base I, a variable-frequency power device I, a wire outlet, and a steel strand to be measured material disk; the variable-frequency power device I is installed on the base I, and the signal input and output ends of the variable-frequency power device I are connected to the signal input and output ends of the control system. The output shaft of the variable-frequency power device I is fixedly connected to the core cylinder I. The core cylinder I is fixedly connected to the middle part of the wire releasing frame body. The wire outlet is arranged on one side of the wire releasing frame body close to the cutting table; the steel strand to be measured material disk is placed between the wire releasing frame body and the wire releasing core cylinder, and the steel strand passes through the wire outlet.

[0010] A further technical solution of the present utility model is as follows: The driving disk includes a wire winding frame body, a core cylinder II, a base II, a variable-frequency power device II, a wire inlet, and a measured steel strand coil. The variable-frequency power device II is installed on the base II. The signal input and output ends of the variable-frequency power device II are connected to the signal input and output ends of the control system. The output shaft of the variable-frequency power device II is fixedly connected to the core cylinder II. The core cylinder II is fixedly connected to the middle of the wire winding frame body. The wire inlet is arranged on the side of the wire winding frame body close to the winch laser counter. The measured steel strand coil is placed between the wire winding frame body and the core cylinder II.

[0011] A further technical solution of the present utility model is as follows: The cutting table includes an operation platform for cutting the steel strand. A cutting machine for cutting the steel strand and a connector for connecting the ends of the steel strand are arranged on the operation platform.

[0012] A further technical solution of the present utility model is as follows: The control system includes a control box and a central control computer. The control box is used for receiving the data transmitted by the laser counter, converting it, and then transmitting it to the central control computer. The central control computer processes the data and issues a control instruction to the control box according to the processing result to control the entire blanking metering system.

[0013] Due to the adoption of the above structure, compared with the prior art, a winch laser counter and a winch-type high-precision steel strand blanking metering system of the present utility model have the following beneficial effects:

[0014] 1. It can reduce slipping and jitter

[0015] The present utility model creatively uses a laser winch counter to measure the blanking of the steel strand, changing the linear contact mode between the traditional counter and the steel strand. By winding the steel strand around the winch, the line contact length between the steel strand and the counter is increased, the friction force between the counter and the steel strand is improved, and the relative sliding and jitter phenomena between the steel strand and the counter are reduced.

[0016] 2. It can improve the blanking accuracy of the steel strand

[0017] The present utility model uses a laser winch counter to measure the blanking of the steel strand, changing the contact mode of the counter, solving the problem of measurement deviation caused by the relative sliding and jitter between the steel strand and the counter, and improving the blanking accuracy of the steel strand.

[0018] Furthermore, in the blanking metering system of the present utility model, variable-frequency power devices are added to both the driven disk and the driving disk. By adjusting the speed difference between the driven disk and the driving disk, the tension of the steel strand during measurement can be guaranteed, thereby solving the measurement deviation caused by the change of the tension and further improving the blanking accuracy of the steel strand.

[0019] In addition, the present utility model does not need to cut the material while hanging the cable, which can improve the cutting accuracy of the steel strand.

[0020] 3. The requirement for the cutting site is low, and it can adapt to small sites

[0021] The winch-type high-precision steel strand cutting and metering system of the present utility model uses a laser winch length meter to measure the cutting of the steel strand. By winding the steel strand around the winch, the cutting of the steel strand can be completed without completely releasing the steel strand according to the designed length. Therefore, there is no need for a long and narrow site, the requirement for the cutting site is low, and it can adapt to small sites.

[0022] 4. The hanging cable efficiency can be improved

[0023] The present utility model uses a laser winch length meter to measure the cutting of the steel strand. It does not need to cut the material while hanging the cable, which can greatly improve the hanging cable efficiency.

[0024] Next, in combination with the drawings and embodiments, the technical features of a winch laser length meter and a winch-type high-precision steel strand cutting and metering system of the present utility model will be further described. Description of the Drawings

[0025] Figure 1 : Schematic structural diagram of the winch laser length meter described in Embodiment 1,

[0026] Figure 2 : Schematic structural diagram of the winch described in Embodiment 1,

[0027] Figure 3 : Schematic structural diagram of the top plate of the winch described in Embodiment 1,

[0028] Figure 4 : Schematic structural diagram of the bottom plate of the winch described in Embodiment 1,

[0029] Figure 5 : Figure 4 Enlarged schematic diagram of part B of

[0030] Figure 6 : Front view of the winch-type high-precision steel strand cutting and metering system described in Embodiment 2,

[0031] Figure 7 : Figure 6 Top view of

[0032] Figure 8 : Schematic structural diagram of the driven disk described in Embodiment 2,

[0033] Figure 9 : Structural diagram of the driving disk described in Embodiment 2;

[0034] Figure 10: Schematic diagram for the calculation principle of high-precision steel strand cutting and metering by a winch in a specific application scenario of the present utility model

[0035] Figure 11 : Schematic diagram of the laser metering radius R1, the winch barrel wall radius R, the measured linear velocity A1, and the actual linear velocity A in a specific application scenario of the present utility model

[0036] Figure 12 : Figure 11 Enlarged schematic diagram of part C of

[0037] In the above-mentioned drawings, the reference numerals are explained as follows:

[0038] 1 - Winch laser length meter, 101 - Length meter support

[0039] 102 - Winch, 1021 - Top plate, 10211 - Upper rotating shaft hole, 1022 - Barrel wall

[0040] 1023 - Bottom plate, 10231 - Lower rotating shaft hole, 10232 - Round hole

[0041] 103 - Wire divider, 104 - Rotating shaft

[0042] 105 - Laser counter, 1051 - Laser emitter, 1052 - Receiver

[0043] 2 - Driven disk, 201 - Pay-off frame body, 202 - Core cylinder I, 203 - Base I

[0044] 204 - Variable-frequency power device I, 205 - Cable outlet, 206 - Steel strand reel to be measured

[0045] 3 - Driving disk, 301 - Take-up frame body, 302 - Core cylinder II, 303 - Base II

[0046] 304 - Variable-frequency power device II, 305 - Cable inlet, 306 - Measured steel strand reel;

[0047] 4 - Cutting table, 5 - Control system, 501 - Control box, 502 - Central control computer

[0048] 6 - Steel strand

[0049] The arrow direction F is the cutting direction, and the arrow direction E is the winch rotation direction. Specific implementation mode Embodiment 1

[0050] Figure 1 Disclosed in is a winch laser length meter 1, including a length meter support 101, a winch 102, a wire divider 103, a rotating shaft 104, and a laser counter 105; among them:

[0051] Both ends of the splitter 103 are connected to the meter counter bracket 101 and are evenly distributed on the four sides of the meter counter bracket 101; both ends of the rotating shaft 104 are fixedly connected to the meter counter bracket 101, and the middle part of the rotating shaft 104 is connected to the winch 102 through a bearing; the winch 102 includes a top plate 1021, a barrel wall 1022, and a bottom plate 1023 (see Figures 2 - 5 ). The top plate 1021 is provided with an upper rotating shaft hole 10211 at the central part for cooperating with the bearing; the diameter of the bottom plate 1023 is larger than that of the top plate 1021, and the bottom plate 1023 is provided with a lower rotating shaft hole 10231 at the central part for cooperating with the bearing. The bottom plate 1023 is also evenly and densely provided with several circular holes 10232 for passing laser signals along the circumference at the edge position larger than the top plate 1021, and the diameter of the circular holes 10232 is φ5mm; the top plate 1021 and the bottom plate 1023 are fixedly connected together through the barrel wall 1022.

[0052] The laser counter 105 includes a laser emitter 1051 and a receiver 1052. The laser emitter 1051 and the receiver 1052 are respectively fixedly connected to the upper and lower ends of the meter counter bracket 101. The laser signal emitted by the laser emitter 1051 passes through the circular hole 10232 of the winch 102 and is received by the receiver 106, and is counted through the PLC module of the receiver 106. Finally, the data information is sent to the control system 5 through the PLC module of the receiver 106. Embodiment 2

[0053] Figures 6 - 7 Disclosed in it is a winch-type high-precision steel strand cutting and metering system, including a driving disk 3, a winch laser meter, a cutting table 4, a driven disk 2, and a control system that are sequentially connected together through a steel strand; the control system is the control system 5 described in Embodiment 1; the winch laser meter is the winch laser meter 1 described in Embodiment 1, and the signal output end of the winch laser meter 1 is connected to the signal input end of the control system 5, and the input and output control ends of the control system 5 are respectively connected to the driven disk 2 and the driving disk 3.

[0054] The driven disk 2 includes a wire releasing frame body 201, a core cylinder I 202, a base I 203, a variable-frequency power device I 204, a wire outlet 205, and a steel strand to-be-tested coil 206 (see Figure 8); The variable-frequency power device I 204 is installed on the base I 203. The signal input and output terminals of the variable-frequency power device I 204 are connected to the signal input and output terminals of the control system. The output shaft of the variable-frequency power device I 204 is fixedly connected to the core barrel I 202. The core barrel I 202 is fixedly connected to the middle of the wire pay-off frame body 201. The wire outlet 205 is arranged on the wire pay-off frame body 201 close to the cutting table 4. The steel strand coil to be tested 206 is placed between the wire pay-off frame body 201 and the wire pay-off core barrel 202. The steel strand passes through the wire outlet 205.

[0055] The active disk 3 includes a wire-reeling frame body 301, a core barrel II 302, a base II 303, a variable-frequency power device II 304, a wire inlet 305, and a measured steel strand coil 306 (see Figure 9 ); The variable-frequency power device II 304 is installed on the base II 303. The signal input and output terminals of the variable-frequency power device II 304 are connected to the signal input and output terminals of the control system. The output shaft of the variable-frequency power device II 304 is fixedly connected to the core barrel II 302. The core barrel II 302 is fixedly connected to the middle of the wire-reeling frame body 301. The wire inlet 305 is arranged on the wire-reeling frame body 301 close to the winch laser counter 1. The measured steel strand coil 306 is placed between the wire-reeling frame body 301 and the core barrel II 302. The steel strand after cutting is passed through the wire inlet 305, and its end is coiled on the core barrel II 302. The variable-frequency power device II 304 drives to coil the steel strand after cutting on the measured steel strand coil 306.

[0056] The cutting table 4 is a conventional cutting table, including a working platform for cutting the steel strand. On the working platform, there is a cutting machine for cutting the steel strand and a connector for connecting the ends of the steel strand.

[0057] The control system 5 includes a control box 501 and a central control computer 502. The control box 501 is used to receive the data transmitted by the laser counter 105, convert it and then transmit it to the central control computer 502. The central control computer 502 processes the data and issues control instructions to the control box 501 to control the entire cutting and metering system.

[0058] (1)When using the blanking metering system described in Embodiment 2 for steel strand blanking metering, the distance between the entire blanking metering system and the cutting table remains constant. The laser winch counter 1 rotates driven by the steel strand and records the amount of cable stored on the winch and the rotation angle of the winch per unit time, calculates the length of the steel strand passing through the laser winch counter per unit time, thereby calculates the length of the steel strand through the metering time, and transmits the metered steel strand length L3 data to the control system; the control system adds the steel strand length L1 from the cutting scale line of the cutting table 4 to the entrance of the laser winch counter 1, the steel strand length L2 stored in the middle of the laser winch counter, and the metered steel strand length L3 to obtain the blanking length L of the steel strand after metering, that is: L = L1 + L2 + L3 (see Figure 10 shown).

[0059] The metered steel strand length is L3 = A * t, where A is the actual linear speed of the winch rotation, t is the time in seconds, A / A1 = R / R1, A1 is the measured linear speed of the winch rotation, R1 is the laser metering radius, and R is the radius of the winch barrel wall, and A = R * A1 / R1 is obtained (see Figures 11 - 12 shown).

[0060] The rotation angle of the winch per unit time is first calculated by the number N of circular holes 10232 provided on the chassis 1023 of the winch laser counter 1 to obtain the average angle α = 360° / N between two adjacent circular holes 10232, and then the count n obtained by the laser counter 105 per unit time is multiplied by the average angle α to obtain the rotation angle of the winch per unit time.

[0061] (2)When using the blanking metering system described in Embodiment 2 for steel strand blanking control, operate according to the following steps:

[0062] S1. When the laser winch counter 1 is not in use, wind a tool cable on the winch 102 to facilitate the threading operation of the steel strand at the start of the metering operation;

[0063] S2. Place the steel strand coil 206 to be measured on the driven disk 2, lead the steel strand to the cutting table 4 for end treatment, and connect it to the tool cable on the laser winch counter 1;

[0064] S3. Pull the tool cable, wind the steel strand to be measured on the winch 102 of the laser winch counter 1, and lead it to the driving disk 3 through the winch 102 and connect it and fix it to the driving disk 3;

[0065] S4. Adjust the wire divider 103 to adjust the friction force between the steel strand and the winch 102;

[0066] S5. Start the entire blanking metering system through the control system. The driving disk 3 starts to rotate, and the traction steel strand drives the laser winch length meter 1 and the driven disk 2 to rotate;

[0067] S6. Use the above steel strand blanking metering process to measure the length of the steel strand and obtain the blanking length of the steel strand after metering;

[0068] S7. The control box 501 of the control system 5 converts the data of the blanking length of the steel strand measured by the laser winch length meter 1 and transmits it to the central control computer 502 for data processing. The central control computer 502 compares the data of the blanking length of the steel strand after metering with the designed blanking length value. When the two values are equal, it transmits an instruction to the control box 501 to control the driving disk 3 and the driven disk 2 to stop rotating;

[0069] S8. Perform operations such as steel strand cutting, upsetting, and connection on the cutting table 4, and then start the traction and cutting operation of the next steel strand;

[0070] S9. Repeat the operations in steps S1 - S8 to cut and coil the steel strand according to the designed blanking length.

[0071] (3) When using the blanking metering system described in Embodiment 2 for steel strand blanking review, operate according to the following steps:

[0072] P1. When the laser winch length meter 1 is not in use, wind a tool cable on the winch 102 to facilitate the threading operation of the steel strand when the metering operation starts;

[0073] P2. Connect the steel strand to be measured to the tool cable on the laser winch length meter 1;

[0074] P3. Pull the tool cable to wind the steel strand to be measured on the winch 102 of the laser winch length meter 1 and pull it to the driving disk 3 through the winch 102 for connection and fixation;

[0075] P4. Adjust the wire divider 103 to adjust the friction force between the steel strand and the winch 102;

[0076] P5. Start the entire blanking system through the control system. The driving disk 3 starts to rotate, and the traction steel strand drives the laser winch length meter 1 and the driven disk 2 to rotate;

[0077] P6. Pull the tail end of the steel strand to be measured to the marked position on the cutting table 4, and use the above steel strand blanking metering process to measure the length of the steel strand and obtain the blanking length of the steel strand after metering;

[0078] P7. The control system obtains the blanking length of the steel strand after metering and controls the driving disk 3 and the driven disk 2 to stop rotating to complete the steel strand blanking review operation.

Claims

1. A winch laser meter, characterized in that: The invention comprises a meter counter bracket (101), a winch (102), a wire splitter (103), a rotating shaft (104), and a laser counter (105); the two ends of the wire splitter (103) are connected to the meter counter bracket (101) and are evenly distributed around the meter counter bracket (101); the two ends of the rotating shaft (104) are fixedly connected to the meter counter bracket (101), and the middle part of the rotating shaft (104) is connected to the winch (102) via a bearing; the transceiver end of the laser counter (105) is respectively fixedly connected to the upper and lower ends of the meter counter bracket (101), and the laser signal emitted by the transmitting end of the laser counter (105) passes through the winch (102) and is received by the receiving end of the laser counter (105), and the signal output end of the laser counter (105) is connected to the signal input end of the control system (5).

2. A winch laser meter according to claim 1, characterized in that: The laser counter (105) comprises a laser transmitter (1051) and a receiver (1052). The laser transmitter (1051) and the receiver (1052) are respectively fixedly connected to the upper and lower ends of the meter bracket (101). The laser signal emitted by the laser transmitter (1051) passes through the capstan (102) and is received by the receiver (1052) for counting. The signal output end of the laser transmitter (1051) is connected to the signal input end of the control system (5).

3. A winch laser meter according to claim 2, characterized in that: The winch (102) comprises a top plate (1021), a cylinder wall (1022), and a bottom plate (1023); the top plate (1021) is provided with an upper shaft hole (10211) matched with the bearing at the center; the bottom plate (1023) has a larger diameter than the top plate (1021), and is provided with a lower shaft hole (10231) matched with the bearing at the center; the bottom plate (1023) is also provided with a plurality of circular holes (10232) uniformly distributed along the circumference at an edge position larger than the top plate (1021) for passing laser signals; the top plate (1021) and the bottom plate (1023) are fixedly connected together via the cylinder wall (1022).

4. A capstan type high-precision steel strand feeding metering system, characterized in that: The invention comprises a driving disk (3), a winch laser meter, a material cutting platform (4), a driven disk (2) and a control system which are sequentially connected together via a steel strand; the winch laser meter is the winch laser meter (1) according to claim 1, the control system is the control system (5) according to claim 1, and the signal input and output ends of the control system (5) are respectively connected to the driven disk (2) and the driving disk (3).

5. The capstan type high-precision steel strand feed metering system according to claim 4 is characterized in that: The driven disk (2) comprises a pay-off frame body (201), a core barrel I (202), a base I (203), a variable frequency power device I (204), a cable outlet (205), and a steel strand material tray (206) to be tested; the variable frequency power device I (204) is mounted on the base I (203); a signal input and output end of the variable frequency power device I (204) is connected to a signal input and output end of a control system (5); an output shaft of the variable frequency power device I (204) is fixedly connected to the core barrel I (202); the core barrel I (202) is fixedly connected to the middle of the pay-off frame body (201); the cable outlet (205) is arranged on a side of the pay-off frame body (201) close to the material cutting platform (4); the steel strand material tray (206) to be tested is placed between the pay-off frame body (201) and the pay-off core barrel I (202); the steel strand passes through the cable outlet (205).

6. The capstan type high-precision steel strand feed metering system according to claim 4 is characterized in that: The active disk (3) comprises a take-up frame body (301), a core barrel II (302), a base II (303), a variable frequency power device II (304), a cable inlet (305), and a measured steel strand material disk (306); the variable frequency power device II (304) is installed on the base II (303), the signal input and output ends of the variable frequency power device II (304) are connected to the signal input and output ends of the control system, the output shaft of the variable frequency power device II (304) is fixedly connected to the core barrel II (302), the core barrel II (302) is fixedly connected to the middle part of the take-up frame body (301), and the cable inlet (305) is arranged on the side of the take-up frame body (301) close to the winch laser meter (1); the measured steel strand material disk (306) is placed between the take-up frame body (301) and the core barrel II (302).

7. The capstan type high-precision steel strand feed metering system according to claim 4 is characterized in that: The cutting table (4) comprises an operating platform for cutting the steel strands, on which a cutting machine for cutting the steel strands and a connector for connecting the ends of the steel strands are arranged.

8. The capstan type high-precision steel strand feed metering system according to claim 4 is characterized in that: The control system (5) comprises a control box (501) and a central control computer (502). The control box (501) is used to receive data transmitted from the laser counter (105) and transmit the data to the central control computer (502) after conversion. The central control computer (502) processes the data and sends control instructions to the control box (501) according to the processing results to control the entire material feeding metering system.

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