Device and control method for realizing automatic speed limiting and stopping of traction machine by identifying coupling

Abstract

The present invention belongs to the technical field of automatic control of power transmission line engineering machinery, and specifically relates to a device and control system for realizing automatic speed limiting and stopping of a traction machine by identifying a connector. It includes a main beam, a No. 1 traction wheel, a No. 2 traction wheel, a mounting support seat, a travel switch, and a travel switch contact mechanism; the No. 1 traction wheel and the No. 2 traction wheel are mounted on one side of the main beam through bearings, and the mounting support seat is fixed to the traction machine main beam by welding or bolting; the travel switch is mounted on one side of the mounting support seat; the travel switch contact mechanism is mounted on the mounting support seat by a positioning pin. It solves the problem that personnel need to observe and operate to slow down and stop the machine when replacing the traction rope, and effectively reduces the labor intensity of the operator; automatic control eliminates safety hazards caused by factors such as personnel negligence and improper operation.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic control of power transmission line engineering machinery, and specifically relates to a device and a control method for realizing automatic speed limiting and stopping of a traction machine by identifying a connector. Background Art

[0002] In the construction of power transmission line projects, a traction machine is generally used to wind steel wire ropes or high-strength fiber ropes, and the traction operation is carried out by rotating the traction machine drum. In addition, the tail rope drum system linked to the drum is used to complete the storage of the traction rope. Due to the long traction mileage and the limitation of the length of a single traction rope, it is necessary to connect multiple traction ropes through a bending-resistant connector to complete the connection of the entire line-laying operation section and related traction operations. When the bending-resistant connector begins to enter the traction machine drum, the traction machine needs to limit the speed to ensure the safety of the connector. When the connector is successfully pulled to the traction machine tail rope drum and wound 2-3 times, the traction machine needs to stop and replace the rope drum. After the work is completed, the normal traction operation can be resumed, and so on, until the traction operation of the entire construction section is completed.

[0003] At present, the above work has not yet been automated. When the anti-bending connector passes through the traction machine, the speed reduction and stop of the traction machine completely rely on the visual judgment of the operator, which requires high concentration of the operator, large workload, and safety risks. Summary of the invention

[0004] The purpose of the invention is to provide a device and a control method for automatically limiting the speed and stopping the traction machine by identifying the connector, so as to solve the safety hazards caused by factors such as the need for personnel to observe and operate to slow down and stop the machine when replacing the existing traction rope, the high labor intensity of the operator, and the negligence and improper operation of the operator.

[0005] In order to achieve the above purpose, the technical solution adopted by the invention is as follows:

[0006] A device for realizing automatic speed limiting and stopping of a traction machine by identifying a coupling, comprising a main beam, a No. 1 traction wheel, a No. 2 traction wheel, a mounting support, a travel switch, and a travel switch contact mechanism; the No. 1 traction wheel and the No. 2 traction wheel are mounted on one side of the main beam through bearings, the mounting support is fixed to the traction machine main beam by welding or bolt connection; the travel switch contact mechanism is used to trigger the travel switch; the travel switch contact mechanism is mounted at the No. 2 traction wheel inlet on the traction machine main beam; the travel switch is mounted on one side of the mounting support; the travel switch contact mechanism is mounted on the mounting support through a positioning pin.

[0007] Furthermore, the travel switch is installed on the side of the mounting support close to the No. 1 traction wheel and the No. 2 traction wheel through the travel switch support. A limit slot is provided on the travel switch support. The limit slot runs through the side wall of the mounting support. A bolt pair is provided in the limit slot. The limit slots are symmetrically distributed on both sides of the travel switch support. The installation position of the travel switch support is adjusted by adjusting the installation position of the bolt pair up and down, thereby adjusting the installation position of the travel switch support. A travel switch trigger rod is provided on the upper part of the travel switch, and the travel switch trigger rod is used to trigger the travel switch.

[0008] Furthermore, the mounting support is provided with two mutually perpendicular mounting holes, wherein the axis of one mounting hole is perpendicular to the upper surface of the travel switch, and during operation, the cross bar is inserted into the mounting hole and fixed by a positioning pin.

[0009] Furthermore, the travel switch contact mechanism includes a cross bar, a contact wheel external plate, a contact wheel support plate connecting rod, a contact wheel and a reset spring; the cross bar is installed on the mounting support through a positioning pin; a trigger drive rod is provided at one end of the cross bar close to the travel switch, the trigger drive rod is sleeved on the cross bar and moves with the contact wheel to trigger the travel switch; one end of the reset spring is inserted into the cross bar, and the other end is clamped on the side wall of the contact wheel external support plate, and the reset spring is used to reset the contact wheel after deflection.

[0010] Furthermore, when the swing angle of the contact wheel is less than 15°, the travel switch will not be triggered; when the swing angle of the contact wheel exceeds 45°, the trigger drive rod and the travel switch trigger rod are disengaged, ensuring that the travel switch will not be damaged under extreme conditions.

[0011] The present invention also discloses a control method for realizing automatic speed limiting and stopping of a traction machine by identifying a coupling, comprising: a travel switch, a controller, a display, a speed sensor and a proportional / switch electromagnet;

[0012] The travel switch is used to collect the trigger signal;

[0013] As the core of the control system, the controller realizes automatic control through control software;

[0014] The display is used to display relevant parameters or symbols, and is also used to input and modify setting values, which are stored in non-volatile memory;

[0015] The speed sensor is used to measure the traction speed and traction mileage;

[0016] The proportional solenoid is used to control the main pump to adjust the traction speed;

[0017] The switch electromagnet is used to stop the traction operation and brake the traction wheel.

[0018] Furthermore, after receiving the trigger signal from the travel switch, the controller will enter the following automatic control process, and at the same time, the display will prompt the operator that the equipment has entered the speed limit state in the form of a flashing icon.

[0019] Furthermore, the controller will automatically limit the current traction speed so that the traction speed is not greater than the set value. If the current speed is greater than the set value, the actual traction speed will be adjusted to the set value. If the current speed is less than the set value, the actual traction speed is the current value. The set value can be manually set and modified within the specified range.

[0020] Furthermore, the controller will start counting the traction mileage immediately upon receiving the trigger signal, and automatically control the equipment to stop the traction operation when the traction mileage reaches the set value. After the equipment stops, the flashing icon will disappear, and the set value can be manually set and modified within the specified range.

[0021] Furthermore, the controller reads the current traction wheel speed through the main motor speed sensor and compares it with the set speed limit: if the current speed is higher than the set speed limit, the controller sends a control signal to the main pump proportional solenoid to adjust the flow rate, thereby limiting the maximum speed of the traction machine; if the current speed is lower than the set speed limit, the traction speed is not adjusted and it continues to run at the current speed; in this state, the operator can also manually adjust the actual traction speed within the speed limit range through the control handle to meet the actual needs of the construction site.

[0022] Furthermore, when the traction mileage reaches the set value, the device is automatically controlled to stop the traction operation, the automatic control process is completed, and the device automatically exits the control process until the next trigger signal is received.

[0023] Furthermore, after the tractor is speed-limited and enters the automatic control process, if the control handle is detected to return to the neutral position before the traction mileage reaches the preset value, the controller determines that the operator manually stops the traction operation. At this time, the system will exit the control process and will no longer limit the speed and mileage until the next time a trigger signal is received.

[0024] In summary, due to the adoption of the above technical solution, the beneficial technical effects of the invention are:

[0025] The device that realizes automatic speed limit and stop of the traction machine by identifying the connector can complete the identification and trigger the control signal before the connector enters the drum; it solves the problem that personnel need to observe the operation to slow down and stop when replacing the traction rope, effectively reducing the labor intensity of the operator;

[0026] The control device which realizes automatic speed limiting and stopping of the traction machine by identifying the coupling automatically completes the speed limiting of the traction machine after receiving the signal sent by the detection device, and stops the traction operation after reaching the set traction distance.

[0027] The control device that realizes automatic speed limit and stop of the traction machine by identifying the connector will display the trigger status and traction operation stop status in real time by flashing icons or other feasible methods after receiving the signal from the detection device, so that the equipment operator or monitoring personnel can fully understand the current traction machine operation status and eliminate the safety hazards caused by factors such as human negligence and improper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the front view of the present invention.

[0029] Figure 2 For the present invention Figure 1 Top view of the .

[0030] Figure 3 For the present invention Figure 1 Left view of .

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention.

[0032] Figure 5 It is a logic block diagram of the control system of the present invention.

[0033] In the figure: main beam 1, No. 1 traction wheel 2, No. 2 traction wheel 3, mounting support 4, travel switch 5, limit slot 51, bolt pair 52, travel switch trigger rod 53, travel switch support 54, travel switch contact mechanism 6, cross bar sleeve 61, contact wheel external plate 62, contact wheel support plate connecting rod 63, contact wheel 64, reset spring 65, positioning pin 7, mounting hole 8, cross bar 9. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the invention more clear, the invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the invention and are not used to limit the invention.

[0035] A device for realizing automatic speed limiting and stopping of a traction machine by identifying a coupling, comprising a main beam 1, a No. 1 traction wheel 2, a No. 2 traction wheel 3, a mounting support 4, a travel switch 5, and a travel switch contact mechanism 6; the No. 1 traction wheel 2 and the No. 2 traction wheel 3 are mounted on one side of the main beam 1 through bearings, the mounting support 4 is fixed to the traction machine main beam 1 by welding or bolt connection; the travel switch contact mechanism 6 is used to trigger the travel switch 5; the travel switch contact mechanism 6 is mounted at the No. 2 traction wheel 3 inlet on the traction machine main beam 1; the travel switch 5 is mounted on one side of the mounting support 4; the travel switch contact mechanism 6 is mounted on the mounting support 4 through a cross bar 9.

[0036] The travel switch 5 is installed on the side of the mounting support 4 close to the No. 1 traction wheel 2 and the No. 2 traction wheel 3 through the travel switch support 54. A limit slot 51 is provided on the travel switch support 54. The limit slot 51 passes through the side wall of the mounting support 4. A bolt pair 52 is provided in the limit slot 51. The limit slots 51 are symmetrically distributed on both sides of the travel switch support 54. The installation position of the bolt pair 52 is adjusted up and down to adjust the installation position of the travel switch support 54, thereby realizing the adjustment of the position of the travel switch 5. A travel switch trigger rod 53 is provided on the upper part of the travel switch 5. The travel switch trigger rod 53 is used to trigger the travel switch 5.

[0037] The mounting support 4 is provided with two mounting holes 8 which are perpendicular to each other, wherein the axis of one of the mounting holes 8 is perpendicular to the upper surface of the travel switch 5 . During operation, the cross bar 9 is inserted into the mounting hole 8 and fixed by the positioning pin 7 .

[0038] The travel switch contact mechanism 6 includes a cross bar sleeve 61, a contact wheel external plate 62, a contact wheel support plate connecting rod 63, a contact wheel 64 and a reset spring 65; the cross bar sleeve 61 is sleeved on the cross bar 9, and the cross bar sleeve 61 is installed on the mounting support 4 through the positioning pin 7; a trigger drive rod 66 is provided at one end of the cross bar sleeve 61 close to the travel switch 5, and the trigger drive rod 66 is fixed on the cross bar sleeve 61 and moves with the contact wheel 64 to trigger the travel switch 5; one end of the reset spring 65 is inserted into the cross bar sleeve 61, and the other end is clamped on the side wall of the contact wheel external plate 62, and the reset spring 65 is used for resetting the contact wheel 64 after deflection.

[0039] When the device is not in use, place the crossbar 9 in the non-working position. Figure 3 As shown in the B position, it is fixed by the positioning pin 7. At this time, the device is placed on the main beam 1, the travel switch 5 will not be triggered, and the device will not affect the winding of the traction wheel wire rope and the normal traction work.

[0040] When using this device, place the crossbar 9 in the working position. Figure 3 As shown in the position A in the middle, it is fixed by the positioning pin 7. At this time, it is suspended on the main beam 1. When the bending-resistant connector passes through the device, it contacts the contact wheel 64 and rotates it, driving the contact wheel external plate 62 to rotate. When the contact wheel external plate 62 rotates, the travel switch is triggered.

[0041] When the swing angle of the contact wheel 64 is less than 15°, the travel switch will not be triggered; when the swing angle of the contact wheel 64 exceeds 45°, the trigger driving rod 66 is disengaged from the travel switch trigger rod 53, ensuring that the travel switch will not be damaged under extreme conditions.

[0042] The present invention also discloses a control method for realizing automatic speed limiting and stopping of a traction machine by identifying a coupling, comprising: a travel switch, a controller, a display, a speed sensor and a proportional / switch electromagnet;

[0043] The travel switch is used to collect the trigger signal;

[0044] As the core of the control system, the controller realizes automatic control through control software;

[0045] The display is used to display relevant parameters or symbols, and is also used to input and modify setting values, which are stored in non-volatile memory;

[0046] The speed sensor is used to measure the traction speed and traction mileage;

[0047] The proportional solenoid is used to control the main pump to adjust the traction speed;

[0048] The switch electromagnet is used to stop the traction operation and brake the traction wheel.

[0049] After the controller receives the trigger signal from the travel switch, it will enter the following automatic control process. At the same time, the display will prompt the operator that the equipment has entered the speed limit state in the form of a flashing icon.

[0050] The controller will automatically limit the current traction speed so that the traction speed is not greater than the set value. If the current speed is greater than the set value, the actual traction speed will be adjusted to the set value. If the current speed is less than the set value, the actual traction speed is the current value. The set value can be manually set and modified within the specified range.

[0051] The controller will start counting the traction mileage immediately upon receiving the trigger signal, and automatically control the equipment to stop the traction operation when the traction mileage reaches the set value. After the equipment stops, the flashing icon will disappear, and the set value can be manually set and modified within the specified range.

[0052] The controller reads the current traction wheel speed through the main motor speed sensor and compares it with the set speed limit: if the current speed is higher than the set speed limit, the controller sends a control signal to the main pump proportional solenoid to adjust the flow rate, thereby limiting the maximum speed of the traction machine; if the current speed is lower than the set speed limit, the traction speed is not adjusted and it continues to run at the current speed; in this state, the operator can also manually adjust the actual traction speed within the speed limit range through the control handle to meet the actual needs of the construction site.

[0053] When the traction mileage reaches the set value, the device is automatically controlled to stop the traction operation, the automatic control process is completed, and the device automatically exits the control process until the next trigger signal is received.

[0054] After the tractor has limited its speed and entered the automatic control process, if the control handle is detected to have returned to the neutral position before the traction mileage reaches the preset value, the controller determines that the operator has manually stopped the traction operation. At this time, the system will exit the control process and will no longer limit the speed or perform mileage statistics until the next time a trigger signal is received.

[0055] The above description is a preferred embodiment of the invention and is not intended to limit the invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the invention should be included in the protection scope of the invention.

Claims

1. A device for automatically limiting the speed and stopping a traction machine by identifying a coupling, characterized in that: The invention comprises a main beam (1), a first traction wheel (2), a second traction wheel (3), a mounting support (4), a travel switch (5), and a travel switch contact mechanism (6); the first traction wheel (2) and the second traction wheel (3) are mounted on one side of the main beam (1) via bearings, the mounting support (4) is fixed to the traction machine main beam (1) by welding or bolt connection; the travel switch contact mechanism (6) is used to trigger the travel switch (5); the travel switch contact mechanism (6) is mounted at the line inlet of the second traction wheel (3) on the traction machine main beam (1); the travel switch (5) is mounted on one side of the mounting support (4); the travel switch contact mechanism (6) is mounted on the mounting support (4) via a positioning pin (7); The travel switch contact mechanism (6) comprises a cross bar (61), a contact wheel outer support plate (62), a contact wheel support plate connecting rod (63), a contact wheel (64) and a reset spring (65); the cross bar (61) is mounted on the mounting support (4) through a positioning pin (7); a trigger driving rod (66) is provided at one end of the cross bar (61) close to the travel switch (5); the trigger driving rod (66) is sleeved on the cross bar (61) and moves with the contact wheel (64) to trigger the travel switch (5); one end of the reset spring (65) is inserted into the cross bar (61), and the other end is clamped on the side wall of the contact wheel outer support plate (62); the reset spring (65) is used for resetting the contact wheel (64) after deflection; The travel switch (5) is installed on a side of the mounting support (4) close to the first traction wheel (2) and the second traction wheel (3) through a travel switch support (54), and a limit slot (51) is provided on the travel switch support (54).

2. A device for automatically limiting the speed and stopping a traction machine by identifying a coupling according to claim 1, characterized in that: The limit slot (51) passes through the side wall of the mounting support (4), a bolt pair (52) is arranged in the limit slot (51), and the limit slot (51) is symmetrically distributed on both sides of the travel switch support (54). The installation position of the bolt pair (52) is adjusted up and down, thereby adjusting the installation position of the travel switch support (54), thereby realizing the adjustment of the position of the travel switch (5). A travel switch trigger rod (53) is arranged on the upper part of the travel switch (5), and the travel switch trigger rod (53) is used to trigger the travel switch (5).

3. The device for automatically limiting the speed and stopping the traction machine by identifying the coupling according to claim 1, characterized in that: The mounting support (4) is provided with two mounting holes (8) which are perpendicular to each other, wherein the axis of one of the mounting holes (8) is perpendicular to the upper surface of the travel switch (5), and during operation, the cross bar (9) is inserted into the mounting hole (8) and fixed by the positioning pin (7).

4. The device for automatically limiting the speed and stopping the traction machine by identifying the coupling according to claim 1, characterized in that: When the swing angle of the contact wheel (64) is less than 15°, the travel switch will not be triggered; when the swing angle of the contact wheel (64) exceeds 45°, the trigger driving rod (66) is disengaged from the travel switch trigger rod (53), thereby ensuring that the travel switch will not be damaged under extreme conditions.

5. The control method for realizing automatic speed limiting and stopping device of traction machine by identifying coupling according to claim 1, characterized in that: include: Travel switches, controllers, displays, speed sensors and proportional / switching solenoids; The travel switch is used to collect the trigger signal; As the core of the control system, the controller realizes automatic control through control software; The display is used to display relevant parameters or symbols, and is also used to input and modify setting values, which are stored in non-volatile memory; The speed sensor is used to measure the traction speed and traction mileage; The proportional solenoid is used to control the main pump to adjust the traction speed; The switch electromagnet is used to stop the traction operation and brake the traction wheel.

6. The control method according to claim 5, characterized in that: After the controller receives the trigger signal from the travel switch, it will enter the following automatic control process. At the same time, the display will prompt the operator that the equipment has entered the speed limit state in the form of a flashing icon.

7. The control method according to claim 5, characterized in that: The controller will automatically limit the current traction speed so that the traction speed is not greater than the set value. If the current speed is greater than the set value, the actual traction speed will be adjusted to the set value. If the current speed is less than the set value, the actual traction speed is the current value. The set value can be manually set and modified within the specified range. The controller will immediately start counting the traction mileage upon receiving the trigger signal, and automatically control the equipment to stop the traction operation when the traction mileage reaches the set value. After the equipment stops, the flashing icon will disappear, and the set value can be manually set and modified within the specified range; The controller reads the current traction wheel speed through the main motor speed sensor and compares it with the set speed limit: if the current speed is higher than the set speed limit, the controller sends a control signal to the main pump proportional solenoid to adjust the flow rate, thereby limiting the maximum speed of the traction machine; if the current speed is lower than the set speed limit, the traction speed is not adjusted and it still runs at the current speed; In this state, the operator can also manually adjust the actual traction speed within the speed limit through the control handle to adapt to the actual needs of the construction site.

8. The control method according to claim 5, characterized in that: When the traction mileage reaches the set value, the device is automatically controlled to stop the traction operation, the automatic control process is completed, and the device automatically exits the control process until the next trigger signal is received; After the tractor has limited its speed and entered the automatic control process, if the control handle is detected to have returned to the neutral position before the traction mileage reaches the preset value, the controller determines that the operator has manually stopped the traction operation. At this time, the system will exit the control process and will no longer limit the speed or perform mileage statistics until the next time a trigger signal is received.

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