An intelligent cable automatic conveyor

Abstract

An intelligent automatic cable conveyor, wherein a position sensor group for detecting cables is provided at the inlet of a cable conveying channel, so that when the position sensor group senses the arrival of the cable, the conveying motor automatically drives the crawler to move, and the left bracket and the right bracket are driven to move synchronously in opposite directions through a screw electric drive mechanism, so as to automatically clamp the cable placed in the cable conveying channel, and a clamping force detection device for detecting the clamping force of the cable is provided in the right bracket. The device can realize automatic clamping, adjustable speed, automatic conveying, and closed-loop control of the cable, thereby ensuring that the clamping force on the cable can be automatically adjusted according to the set threshold value, and the speed of the conveyor can also be adjusted according to the on-site construction conditions, which greatly reduces the labor intensity and cost of construction personnel, and has the advantages of high cable laying quality and high efficiency.

Description

Technical Field

[0001] The invention relates to an intelligent automatic cable conveyor. Background Art

[0002] In the traditional construction method of ultra-high voltage long-distance, large-section power cable laying, the cable is mainly transported by traction machine + conveyor and other methods. Due to the long length of the cable, the long cable transportation distance and the large number of conveyors, at present, at least one person is arranged on each device to operate the cable conveyor, mainly to start / stop the laying equipment and clamp the cable by hand. At present, the following deficiencies exist in the process of laying long sections of cables: First, the control method currently adopted by the equipment is either to start at the same time or to arrange personnel on site to operate the equipment. In the simultaneous start-up method, since the cable has not yet reached the equipment, the equipment is idling at this time, which requires a certain amount of electric energy to be wasted; second, personnel are arranged on site to start, and the personnel input cost is relatively high; third, most of the conveyors currently use crawler type, and the crawler is opened and closed by hand-cranked double-headed screw until the cable is clamped. This part requires personnel to adjust the screw, which is labor-intensive; fourth, when manually clamping the cable, the clamping torque of the cable is currently judged by a torque wrench, and the clamping force of the cable cannot be accurately and intuitively known; when actually laying the cable, how much the conveyor clamps the cable, and the real-time changes of the clamping force cannot be accurately grasped, so the laying quality of the cable cannot be monitored in real time, and this method cannot accurately and real-time guide the actual size of the clamping force and whether it causes damage to the cable. Summary of the invention

[0003] The present invention solves the deficiencies of the prior art and provides an intelligent cable automatic conveyor with automatic clamping, adjustable speed and automatic conveying, which ensures that the clamping force on the cable can be automatically adjusted within a set target value, greatly reducing the labor intensity of construction workers and achieving high-quality and high-efficiency cable laying.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] An intelligent cable automatic conveyor comprises a left bracket and a right bracket slidably mounted on a conveyor base, and a first conveying crawler and a second conveying crawler respectively mounted on opposite surfaces of the left and right brackets, wherein the first conveying crawler and the second conveying crawler are driven by a conveying motor to convey in the same direction, so that a cable conveying channel is formed between the first conveying crawler and the second conveying crawler, and an inlet of the cable conveying channel is provided with a position sensor group for detecting the cable, the position sensor group is linked with the conveying motor, so that the position sensor group senses the cable through the conveying motor to drive the first conveying crawler and the second conveying crawler to move, the left bracket and the right bracket are driven by a screw drive mechanism to move synchronously in opposite directions, so as to clamp the cable placed in the cable conveying channel, and a pressing force detection device for detecting the clamping force of the cable is provided in the right bracket, and the pressing force detection device comprises a nut mounted on a screw of the screw drive mechanism and linked with the right bracket, a force sensor fixed on the conveyor base, and a spring sleeved on the screw and arranged between the nut and the force sensor, and when the left bracket and the right bracket move towards each other, the nut squeezes the spring to compress.

[0006] Furthermore, the position sensor group includes a first position sensor and a second position sensor, the first position sensor includes a first position sensor generating end and a first position sensor receiving end, the second position sensor includes a second position sensor generating end and a second position sensor receiving end, the second position sensor generating end and the second position sensor receiving end are respectively arranged on both sides of the cable in the horizontal plane where the cable center axis is located, and the first position sensor generating end and the first position sensor receiving end are respectively arranged on both sides of the cable between the horizontal plane where the cable center axis is located and the tangent plane at the top of the cable. The position sensor group detects the arrival of the cable through two pairs of position sensors to avoid false alarms of the sensor by the wire rope, and when the two sensors are evenly blocked, a signal is output to the control system to start the equipment; after the cable is laid, the conveyor that has passed through can be stopped by the control system according to the state of the sensor. The spacing between the first position sensor and the second position sensor is adjustable, so that it can be used to sense cables of different diameters.

[0007] Furthermore, the screw drive mechanism includes a screw, a first gear installed on the screw and linked to the screw, a screw drive motor, and a second gear installed at the output end of the screw drive motor, and the first gear is meshed with the second gear. In this example, the transmission is not limited to gears, and can also be a sprocket, a pulley, etc. The screw drive motor drives the main screw to realize the opening and closing of the track. The first conveyor track and the second conveyor track are driven by the conveying motor and the reducer. When the first conveyor track and the second conveyor track clamp the cable, the pressure of the first conveyor track and the second conveyor track on the cable is the force exerted on the spring. The detection of the clamping force of the spring can be completed by detecting the deformation or force of the spring. When the automatic clamping force exceeds the set clamping force, the clamping of the cable is stopped; when the cable is laid, the cable conveying channel can be opened by driving the screw drive motor to reverse.

[0008] Furthermore, the signal ends of the position sensor group and the clamping force detection device are connected to a programmable control module, and the screw drive mechanism and the conveying motor are controlled by the programmable control module. A threshold of the cable clamping force is preset in the programmable control module, and the programmable control module compares the cable clamping force collected by the clamping force detection device with the threshold, thereby adjusting the clamping force of the screw drive mechanism.

[0009] Furthermore, it also includes an alarm connected to a programmable control module, wherein a clamping force threshold is preset in the programmable control module. When a screw drive mechanism fails and the clamping force actually detected exceeds the threshold, the programmable control module controls the alarm to sound an alarm and controls the conveying motor to stop, thereby forming a closed-loop control. When the position sensor group in the programmable control module detects that there is no cable for more than a set time, the programmable control module controls the conveying motor and the screw drive mechanism to stop.

[0010] Furthermore, it also includes a speed sensor for detecting the rotation speed of the conveying motor, and the speed sensor is connected to the programmable control module.

[0011] Furthermore, the conveying motor is a speed-regulating motor, which is connected to a speed regulator to control the conveying speed of the speed-regulating motor. A target speed value can be set at the same time, and the conveying speed can be automatically adjusted according to the detected speed, or the conveying speed can be manually adjusted.

[0012] Due to the above structure, the device has the following advantages:

[0013] 1. The device is automatically started when the cable reaches the equipment through the position sensor group;

[0014] 2. After the cable is laid in place, the device can stop running automatically, or the conveyor can be stopped manually;

[0015] 3. The cable can be automatically clamped after entering the conveyor, reducing the efficiency and labor intensity of manual operation of on-site construction personnel;

[0016] 4. Built-in clamping force detection device, simple on-site layout, real and intuitive data;

[0017] 5. When the clamping force reaches the set target value during automatic clamping, the cable can be stopped from being clamped. At the same time, the clamping force is kept within the set target value range during operation, forming a closed-loop control to ensure that the required clamping force meets the normal operating requirements. The real-time clamping force of the equipment is obtained through spring compression, and the data monitoring is real, reliable and intuitive.

[0018] 6. Using a compression force detection device instead of the original manual theoretical calculation method can more accurately guide the compression force on the cable; and the compression force detection device is built into the bracket, which is simple to lay out and prevents water intrusion.

[0019] 7. The detected data can be used to provide favorable reference and traceability requirements for subsequent cable laying construction.

[0020] To summarize, the device detects the arrival status of the cable by using a position sensor group, can automatically start according to the arrival, and can automatically stop the conveyor after the cable has passed through the conveyor; at the same time, a built-in compression force detection device in the conveyor detects the compression force of the cable in the conveying equipment in real time to ensure that the compression force on the cable is within the set target value range and does not exceed the set threshold; the screw drive mechanism adopts electric clamping, and automatically stops clamping when the set clamping force is reached. After release, it can rotate in the opposite direction to open the conveying channel of the conveyor cable, which greatly reduces the labor intensity of construction personnel; by adopting automated, scientific and data-based methods, the laying quality of the cable can be better guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the front view of the device.

[0022] Figure 2 is a cross-sectional view of the device.

[0023] Figure 3 It is a top view of the pressing force detection device of this device.

[0024] Figure 4 This is the primary circuit diagram of the control part of this device.

[0025] Figure 5 This is the secondary circuit and schematic diagram of the control part of this device.

[0026] Figure 6 It is another implementation method of the control part of the device.

[0027] In the accompanying drawings, 1-cable, 2-first conveyor track, 3-second conveyor track, 4-right bracket, 5-left bracket, 6-screw drive mechanism, 61-first gear, 62-screw drive motor, 63-second gear, 7-clamping force detection device, 71-nut, 72-spring, 73-force sensor, 8-screw, 9-first position sensor generating end, 10-second position sensor generating end, 11-second position sensor receiving end, 12-first position sensor receiving end, 13-conveyor motor, 14-touch screen, 15-speed sensor, 16-speed regulator, 17-conveyor motor. DETAILED DESCRIPTION

[0028] In order to better understand the present invention, the invention is further described in detail below in conjunction with the accompanying drawings and implementation examples, but the implementation methods of the present invention are not limited thereto. The protection scope of the present invention also involves equivalent technical means that can be thought of by those skilled in the art based on the concept of the present invention.

[0029] like Figure 1-3 As shown, an intelligent cable automatic conveyor comprises a left bracket 5 and a right bracket 4 which are slidably mounted on a conveyor base, and a first conveying crawler 2 and a second conveying crawler 3 which are respectively mounted on opposite surfaces of the left and right brackets 4. The first conveying crawler 2 and the second conveying crawler 3 are driven by a conveying motor 13 to convey in the same direction, so that a cable 1 conveying channel is formed between the first conveying crawler 2 and the second conveying crawler 3. A position sensor group for detecting the cable 1 is provided at the inlet of the cable 1 conveying channel. The left bracket 5 and the right bracket 4 are driven by a screw drive mechanism 6 to move synchronously in opposite directions, thereby clamping the cable 1 placed in the cable 1 conveying channel. A pressing force detection device 7 for detecting the clamping force of the cable 1 is provided in the right bracket 4. The pressing force detection device 7 comprises a nut 71 which is mounted on a screw 8 of the screw drive mechanism 6 and linked to the right bracket 4, a force sensor 73 fixed on the conveyor base, and a spring 72 which is sleeved on the screw 8 and arranged between the nut 71 and the force sensor 73. When the left bracket 5 and the right bracket 4 move toward each other, the nut 71 compresses the spring 72 to compress.

[0030] The position sensor group includes a second position sensor generating end 10 and a second position sensor receiving end 11 respectively arranged on both sides of the cable 1 and at the horizontal plane where the central axis of the cable 1 is located, and a first position sensor generating end 9 and a first position sensor receiving end 12 arranged on both sides of the cable 1 and between the horizontal plane where the central axis of the cable 1 is located and the tangent plane of the uppermost end of the cable 1.

[0031] The screw drive mechanism 6 includes a screw 8, a first gear 61 installed on the screw 8 and linked to the screw 8, a screw 8 driving motor 62, and a second gear 63 installed at the output end of the screw 8 driving motor 62, wherein the first gear 61 is meshed with the second gear 63.

[0032] The signal ends of the position sensor group and the clamping force detection device 7 are connected to the programmable control module, and the screw drive mechanism 6 and the conveying motor 13 are controlled by the programmable control module. The programmable control module has a preset threshold value of the clamping force of the cable 1. The programmable control module compares the clamping force of the cable 1 collected by the clamping force detection device 7 with the threshold value, thereby adjusting the clamping force of the screw drive mechanism 6.

[0033] It also includes an alarm connected to the programmable control module. When the position sensor group in the programmable control module detects that the cable 1 is not in the state for a set time, the programmable control module controls the alarm to sound and controls the conveying motor 13 to stop.

[0034] It also includes a speed sensor 15 for detecting the rotation speed of the conveying motor 13, and the speed sensor 15 is connected to the programmable control module.

[0035] like Figure 4 , 5 As shown, the control part is explained: the A phase and B phase of the rotary encoder are connected to the control module input terminal 0 and No. 1 interface through the 600 and 601 signal lines respectively, and the power supply is connected to the power module terminal (24V, 0V) through the power line; the 1# position signal and the 2# position signal are connected to the control module input terminal 2 and No. 3 interface through the 602 and 603 signal lines respectively, and the power supply is connected to the power module terminal (24V, 0V) through the power line; the forward and reverse signals of the conveying motor 13 are connected to the control module input terminal 4 and No. 5 interface through the 604 and 605 signal lines; the forward and reverse signals of the screw drive motor 62 are connected to the control module input terminal 6 and No. 7 interface through the 606 and 607 signal lines; the manual mode connects the signal line 608 to the control module input terminal No. 8 interface through the button normally open self-reset point SB1; the automatic mode connects the signal line 609 to the control module input terminal No. 9 interface through the button normally open self-reset point SB2; other signals are connected to the control module in sequence according to the figure.

[0036] Control work description: Manual mode is used for debugging and single unit startup, and determines the forward and reverse rotation of the equipment's conveying motor and the forward and reverse rotation of the screw drive motor 62; Automatic mode: When the cable reaches the equipment, the first position sensor and the second position sensor are both activated, thereby driving the AC contactor KM1 (KM2) to operate and making the crawler belt run; When the equipment is started, the control module determines and drives the AC contactor KM3 (KM4) to operate, so that the screw drive motor 62 operates, and the first gear and the second gear drive the adjustment screw 8 to rotate, so that the left and right brackets clamp the cable from both sides to the middle; During the clamping process, the clamping force is collected by the force sensor 73, and the A / D conversion is performed through the force measurement module, and the data is transmitted to the control module. The control module compares the actual value collected with the set value by setting, and automatically stops the screw drive motor 62 when the set value is reached, and monitors the clamping force of the cable in real time during the transmission of the cable 1. Once the limit is exceeded, the operation of the equipment is automatically stopped, and its data and alarm information can be observed on the touch screen 14. At the same time, the start and stop of the device and the forward and reverse state switching can be completed on the touch screen 14. When the cable is transported, a channel is formed between the two pairs of position sensors and the cable is moved, so that the device can be automatically stopped normally.

[0037] Speed ​​detection device: The encoder is connected to the driven shaft of the conveying motor through a coupling. The driven shaft sends 600 (1000) pulses per rotation. After receiving the pulses, the control module can obtain the running speed of the conveying motor, and the cable laying length can be obtained by conversion. The speed detection device has good waterproof performance, simple structure and reliable data.

[0038] like Figure 6 As shown, the conveying motor 17 is a speed regulating motor, which is connected to the speed regulator 16 to control the conveying speed of the speed regulating motor. At the same time, the target speed value can be set, and the conveying speed can be automatically adjusted according to the detected speed, and the conveying speed can also be manually adjusted.

[0039] We will start and stop the double-track conveyor automatically; open and close the tracks by electric clamping; and use the clamping force detection device to judge the clamping force on the cable. We will make a judgment when a signal of excessive clamping force appears.

[0040] In addition, it should be noted that this patent is not limited to the above-mentioned embodiments. As long as the specific size or shape of its parts is not specified, the parts can be of any size or shape that is compatible with its structure, and regardless of any changes in its material composition, any structural design provided by the present invention is a variation of the present invention and should be considered to be within the scope of protection of the present invention.

Claims

1. An intelligent cable automatic conveyor, comprising a left bracket (5), a right bracket (4) slidably mounted on a conveyor base, and a first conveying crawler (2) and a second conveying crawler (3) respectively mounted on opposite surfaces of the left and right brackets (4), wherein the first conveying crawler (2) and the second conveying crawler (3) are driven by a conveying motor (13) to convey in the same direction, so that a cable (1) conveying channel is formed between the first conveying crawler (2) and the second conveying crawler (3), characterized in that: The inlet of the cable (1) conveying channel is provided with a position sensor group for detecting the cable (1), and the position sensor group is linked with the conveying motor, so that the position sensor group senses the cable through the conveying motor to drive the first conveying crawler (2) and the second conveying crawler (3) to move, and the left bracket (5) and the right bracket (4) are driven to move synchronously in opposite directions or in opposite directions through the screw drive mechanism (6), so as to clamp the cable (1) placed in the cable (1) conveying channel, and the right bracket (4) is provided with a clamping force detection device (7) for detecting the clamping force of the cable (1), and the clamping force detection device (7) includes a nut (71) mounted on the screw (8) of the screw drive mechanism (6) and linked with the right bracket (4), a force sensor (73) fixed on the conveyor base, and a spring (72) sleeved on the screw (8) and arranged between the nut (71) and the force sensor (73), and when the left bracket (5) and the right bracket (4) move toward each other, the nut (71) squeezes the spring (72) to compress; The position sensor group comprises a first position sensor and a second position sensor, the first position sensor comprises a first position sensor generating end (9) and a first position sensor receiving end (12), the second position sensor comprises a second position sensor generating end (10) and a second position sensor receiving end (11), the second position sensor generating end (10) and the second position sensor receiving end (11) are respectively arranged on both sides of the cable (1) at a horizontal plane where the central axis of the cable (1) is located, the first position sensor generating end (9) and the first position sensor receiving end (12) are respectively arranged on both sides of the cable (1) between the horizontal plane where the central axis of the cable (1) is located and the uppermost tangent plane of the cable (1); the position sensor group detects the arrival of the cable through the first position sensor and the second position sensor, and when the first position sensor and the second position sensor are both blocked, the conveying motor (13) is started; the distance between the first position sensor and the second position sensor is adjustable to be suitable for sensing cables of different diameters; The signal ends of the position sensor group and the clamping force detection device (7) are connected to a programmable control module, and the screw drive mechanism (6) and the conveying motor (13) are controlled by the programmable control module. The programmable control module is preset with a target value and a threshold value of the clamping force of the cable (1). The programmable control module compares the clamping force of the cable (1) collected by the clamping force detection device (7) with the target value, thereby automatically adjusting the clamping force of the screw drive mechanism (6) on the cable.

2. The intelligent cable automatic conveyor according to claim 1 is characterized in that: The screw drive mechanism (6) comprises a screw (8), a first gear (61) mounted on the screw (8) and linked to the screw (8), a screw (8) driving motor (62), and a second gear (63) mounted at the output end of the screw (8) driving motor (62), wherein the first gear (61) is meshed with the second gear (63).

3. The intelligent cable automatic conveyor according to claim 1 is characterized in that: It also includes an alarm connected to a programmable control module, wherein a clamping force threshold is preset in the programmable control module. When the screw drive mechanism (6) fails and the clamping force actually detected exceeds the preset threshold, the programmable control module controls the alarm to sound an alarm and controls the conveying motor (13) to stop, thereby forming a closed-loop control.

4. The intelligent cable automatic conveyor according to claim 1 is characterized in that: When a position sensor group is set in the programmable control module to detect that the state of no cable (1) exceeds a set time, the programmable control module controls the conveying motor (13) and the screw drive mechanism (6) to stop.

5. The intelligent cable automatic conveyor according to claim 1 is characterized in that: It also includes a speed sensor (15) for detecting the rotation speed of the conveying motor (13), and the speed sensor (15) is connected to the programmable control module.

6. The intelligent cable automatic conveyor according to claim 1 is characterized in that: The conveying motor is a speed-regulating motor, and the speed-regulating motor is connected to a speed regulator to control the conveying speed of the speed-regulating motor.

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