Electromagnetic rotation limiting device, tower assembling device and method

Abstract

The application belongs to the field of power transmission line tower assembly construction, and discloses an electromagnetic rotary limiting device, a tower assembly construction device and a method. The electromagnetic rotary limiting device comprises an electromagnetic limiting device, an induction trigger device and an energy supply device. The electromagnetic limiting device comprises an electromagnetic driving device. The electromagnetic driving device comprises a limiting pin shaft for limiting the swing arm of the landing derrick. The induction trigger device is used for sensing the swing arm position of the landing derrick. When the induction trigger device senses that the swing arm reaches a preset sensing position, the energy supply device is controlled to supply power to the electromagnetic driving device, and the limiting pin shaft extends into the swing arm to limit the swing arm of the landing derrick. The device has a simple structure, is convenient to install and disassemble, can be reused after disassembly, and reduces the use cost. The device can effectively solve the technical problem of folding and self-locking of the swing arm of the landing derrick.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of power transmission line tower erection construction, in particular to an electromagnetic rotary limiting device, a tower erection construction device and method. BACKGROUND

[0002] The power transmission line tower erection is an important link in the power grid construction with large engineering quantity, high construction difficulty and many technical links. The rocker arm floor-to-ground pole can realize double-side simultaneous hoisting work, has high construction efficiency, and the rocker arm pole is directly supported on the ground, so the structure has good stability and safety. Therefore, the rocker arm floor-to-ground pole is one of the commonly used and important construction equipment in the tower erection construction.

[0003] The basic structure of the existing rocker arm floor-to-ground pole includes a hoisting steel wire rope, an amplitude-changing steel wire rope, a mast, a rocker arm and a pole body, and the rocker arm realizes amplitude change through the movement of the amplitude-changing steel wire rope. When the pole body of the rocker arm floor-to-ground pole reaches a certain height, the length of the amplitude-changing and hoisting steel wire ropes increases, resulting in the increase of the self-weight. When the horizontal angle of the rocker arm reaches a critical angle, due to the effect of the traction force of the steel wire rope and the wind load on the rocker arm, the rocker arm may be self-locked.

[0004] At present, the rocker arm pole does not install a self-locking prevention device, and the manual or winch dragging mode in the lower part has safety hazards, and safety accidents are prone to occur. SUMMARY

[0005] The purpose of the present application is to provide an electromagnetic rotary limiting device, a tower erection construction device and method to solve the technical problem of self-locking of the rocker arm of the rocker arm floor-to-ground pole.

[0006] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0007] In the first aspect, the present application provides an electromagnetic rotary limiting device, which comprises an electromagnetic limiting device, an induction trigger device and an energy supply device.

[0008] The electromagnetic limiting device comprises an electromagnetic driving device; the electromagnetic driving device comprises a limiting pin shaft for limiting the rocker arm of the floor-to-ground pole.

[0009] The induction trigger device is used for sensing the position of the rocker arm of the floor-to-ground pole. When the induction trigger device senses that the rocker arm reaches a preset sensing position, the energy supply device supplies power to the electromagnetic driving device, and the limiting pin shaft extends into the rocker arm to limit the rocker arm of the floor-to-ground pole.

[0010] The further improvement of the present application is that the electromagnetic driving device comprises an electromagnetic coil, a fixed iron core, a spring and a limiting pin shaft.

[0011] The electromagnetic coil is provided with a fixed iron core, a guide rod is connected to the fixed iron core, a limiting pin shaft is installed on the guide rod, a movable iron core is fixed to the side of the limiting pin shaft close to the fixed iron core, and a spring is arranged between the fixed iron core and the movable iron core and is sleeved on the guide rod;

[0012] When the electromagnetic coil is powered, the movable iron core drives the limiting pin shaft to extend along the guide rod away from the fixed iron core to the electromagnetic driving device;

[0013] When the electromagnetic coil loses power, the movable iron core drives the limiting pin shaft to retract along the guide rod to the fixed iron core to retract the electromagnetic driving device.

[0014] Further improvement of the application is that a universal wheel is arranged at the end of the limiting pin shaft away from the fixed iron core; the universal wheel is used to form rolling friction with the swing arm of the floor holding pole.

[0015] Further improvement of the application is that the sensing trigger device is a proximity switch; the sensing trigger device is installed on the electromagnetic limiting device.

[0016] Further improvement of the application is that the electromagnetic driving device is a normally open direct-acting electromagnetic valve; and the energy supply device is a storage battery.

[0017] Further improvement of the application is that it further comprises a ground remote control switch; the ground remote control switch is used to remotely control the power-off of the energy supply device.

[0018] In the second aspect, the application provides a tower assembly device, which comprises a floor holding pole and an electromagnetic rotary limiting device; the electromagnetic rotary limiting device comprises an electromagnetic limiting device, a sensing trigger device and an energy supply device; the electromagnetic limiting device is installed at the hinge joint between the swing joint of the floor holding pole and the swing arm;

[0019] The electromagnetic limiting device comprises an electromagnetic driving device; the electromagnetic driving device comprises a limiting pin shaft used to limit the swing arm of the floor holding pole;

[0020] The sensing trigger device is used to sense the position of the swing arm of the floor holding pole; when the sensing trigger device senses that the swing arm reaches a preset sensing position, the energy supply device supplies power to the electromagnetic driving device, and the limiting pin shaft extends into the swing arm to limit the swing arm of the floor holding pole.

[0021] Further improvement of the application is that the swing arm is provided with a limiting groove matched with the limiting pin shaft; the limiting groove is an arc-shaped limiting groove with the rotation shaft of the swing arm as the center; the inner wall of the limiting groove is connected with a baffle through a spring device; the baffle is used to elastically abut against the side wall extending into the limiting groove under the action of the spring device.

[0022] The further improvement of the present application is that when the induction trigger device induces the rocker arm to reach the preset induction position, the control energy supply device supplies power to the electromagnetic driving device, and the limiting pin shaft extends into the limiting slot of the rocker arm; when the rocker arm reaches the preset induction position, the included angle between the rocker arm and the horizontal plane is 66°-69°;

[0023] When the rocker arm rotates to an included angle of 70°-77° with the horizontal plane, the side wall of the limiting pin shaft contacts the baffle in the limiting slot;

[0024] When the rocker arm rotates to an included angle of 78°-80° with the horizontal plane, the side wall of the limiting pin shaft contacts the baffle in the limiting slot, and the spring device is compressed to the compression limit, and the rocker arm folding movement stops.

[0025] In a third aspect, the present application provides an electromagnetic rotary limiting method based on the electromagnetic rotary limiting device, comprising:

[0026] When the rocker arm is folded to a set critical angle, the induction trigger device is triggered, the induction trigger device sends a signal to control the energy supply device to be powered on to supply power to the electromagnetic limiting device, so that the limiting pin shaft pops out and enters the limiting slot of the rocker arm to limit the rocker arm of the ground grab pole;

[0027] Alternatively, when the rocker arm is working normally, the remote control energy supply device is powered off, so that the limiting pin shaft is retracted into the electromagnetic limiting device, and the limiting action on the rocker arm is released.

[0028] Compared with the prior art, the present application has the following beneficial effects:

[0029] The present application provides an electromagnetic rotary limiting device, a tower assembly construction device and method; the electromagnetic rotary limiting device comprises an electromagnetic limiting device, an induction trigger device and an energy supply device; the electromagnetic limiting device comprises an electromagnetic driving device; the electromagnetic driving device comprises a limiting pin shaft for limiting the rocker arm of the ground grab pole; the induction trigger device is used for inducing the position of the rocker arm of the ground grab pole, and when the induction trigger device induces the rocker arm to reach the preset induction position, the control energy supply device supplies power to the electromagnetic driving device, and the limiting pin shaft extends into the rocker arm to limit the rocker arm of the ground grab pole. The present application has the advantages of simple structure, easy installation and disassembly, repeated use after disassembly, reduced use cost, and effective solution to the technical problem of rocker arm folding self-locking of the ground grab pole.

[0030] The present application can monitor and control the rocker arm folding self-locking in the tower assembly construction process in real time, reduce the use risk of the grab pole, and improve the safety and reliability of the tower assembly construction.

[0031] The present application adopts data wireless transmission technology, avoids the interference of long signal lines on data, and avoids the influence of signal lines on the tower assembly hoisting process.

[0032] The present application can realize intelligent rocker arm self-locking, reduce the workload of construction personnel, save resources and reduce engineering cost. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the application given below, explain the application. In the drawings:

[0034] Figure 1 It is a schematic diagram of the installation state of the electromagnetic rotary limiting device of the present application;

[0035] Figure 2 It is a schematic diagram of the cross section of the electromagnetic rotary limiting device of the present application. DETAILED DESCRIPTION

[0036] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0037] The following detailed description is exemplary description and is intended to provide further detailed description of the present application. Unless otherwise specified, all technical terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs. The terms used in the present application are only for the purpose of describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0038] Example 1

[0039] Please refer to Figure 1 As shown in the drawings, the present application provides an electromagnetic rotary limiting device for self-locking of the folding of the anti-rocking arm of the floor holding pole, which comprises an electromagnetic limiting device 1, a proximity switch 2, a storage battery 3 and a ground remote control switch (not shown). The limiting device 1 is installed at the hinge joint of the swivel joint 100 and the rocker arm 101. The rocker arm 101 is provided with a limiting groove 1010.

[0040] Please refer to Figure 2 As shown in the drawings, the electromagnetic limiting device 1 comprises two sets of normally open type direct acting electromagnetic valves; each set of normally open type direct acting electromagnetic valve comprises: an electromagnetic coil 11, a fixed iron core 12, a spring 13, a limiting pin shaft 14 and a universal wheel 15. The fixed iron core 12 is arranged in the electromagnetic coil 11, the fixed iron core 12 is connected with a guide rod 122, the limiting pin shaft 14 is installed on the guide rod 122, the dynamic iron core 121 is fixed on the side close to the fixed iron core 12 of the limiting pin shaft 14, and the spring 13 is arranged between the fixed iron core 12 and the dynamic iron core 121 and is sleeved on the guide rod 122. The universal wheel 15 is arranged at the end of the limiting pin shaft 14 away from the fixed iron core 12; the universal wheel (15) is used to form rolling friction with the rocker arm of the floor holding pole.

[0041] The electromagnetic limiting device 1 adopts a normally open type direct-acting electromagnetic valve, and the electromagnetic force of the electromagnetic coil 11 disappears when energized, so that the limiting pin shaft 14 is ejected, and the limiting pin shaft 14 enters the limiting groove 1010 of the rocker arm 101. The inner wall of the limiting groove 1010 is connected with a baffle 1012 through a spring device 1011. The limiting groove 1010 is an arc-shaped limiting groove with the rotating shaft of the rocker arm 101 as the center; the limiting pin shaft 14 and the baffle 1012 are set to be in contact at 70°-77°, the baffle 1012 abuts against the side wall of the limiting pin shaft 14, so that the rocker arm 101 can stop the folding movement before 78°-80°, and the universal wheel 15 can reduce the friction loss when the limiting pin shaft 14 contacts the rocker arm 101. The extension direction of the limiting pin shaft 14 is parallel to the direction of the rotating shaft of the rocker arm 101.

[0042] The electromagnetic limiting device 1 is provided with a proximity switch 2; the folding horizontal angle of the rocker arm 101 of the double-rocker-arm holding pole is 87°, and the proximity switch 2 is set to trigger at the horizontal angle of 68° of the rocker arm 101, and the proximity switch 2 is wirelessly connected with a wireless switch of the storage battery 3, and gives a wireless switch signal of the storage battery 3 after triggering.

[0043] The opening end of the wireless switch of the storage battery 3 is used to control whether the storage battery 3 supplies power to the electromagnetic coil 11 of the electromagnetic limiting device 1.

[0044] The ground remote control switch is used to control the storage battery 3 to be powered off on the ground, and when the double-rocker-arm holding pole needs to work normally, the wireless switch of the storage battery 3 can be remotely controlled through the ground remote control switch, and then the electromagnetic limiting device 1 is controlled to be powered off, so that the limiting pin shaft 14 is retracted to release the limitation of the rocker arm 101.

[0045] Embodiment 2

[0046] Please refer to Figure 2 As shown in the figure, the present application provides an electromagnetic rotary limiting method for preventing the rocker arm of the floor holding pole from folding and self-locking, which comprises the following steps:

[0047] When the rocker arm 101 is folded to the critical angle (the horizontal angle is 68°), the proximity switch 2 is triggered, the proximity switch 2 sends a signal, the storage battery 3 is powered on through the wireless switch, the storage battery 3 supplies power to the electromagnetic coil 11, the electromagnetic force disappears, the limiting pin shaft 14 is ejected under the action of the spring 13, enters the limiting groove 1010 of the rocker arm 101, and reaches the limiting effect. The limiting pin shaft 14 and the baffle 1012 are set to be in contact at 70°, and the baffle 1012 abuts against the side wall of the limiting pin shaft 14, so that the rocker arm 101 can stop the folding movement before 80°.

[0048] When the rocker 101 needs to work normally, the wireless switch is controlled by the ground remote control switch, the battery 3 is controlled to be powered off, the electromagnetic coil 11 is powered off, the fixed iron core 12 attracts the movable iron core 121 to drive the limiting pin shaft 14 to overcome the elastic force of the spring 13 and retract into the electromagnetic limiting device 1, and the limiting action on the rocker 101 is released.

[0049] Embodiment 3

[0050] Please refer to Figure 1 As shown in the figure, the application provides a tower assembly construction device, which comprises a floor embracing pole and an electromagnetic rotary limiting device; the electromagnetic rotary limiting device comprises an electromagnetic limiting device 1, an induction trigger device and an energy supply device; the electromagnetic limiting device 1 is installed at the hinged joint of the rocker 101 and the rotary joint 100 of the floor embracing pole.

[0051] The electromagnetic limiting device 1 comprises an electromagnetic driving device; the electromagnetic driving device comprises a limiting pin shaft 14 for limiting the rocker of the floor embracing pole; the induction trigger device is used for sensing the position of the rocker of the floor embracing pole; when the induction trigger device senses that the rocker reaches a preset sensing position, the energy supply device is controlled to supply power to the electromagnetic driving device, and the limiting pin shaft 14 extends into the rocker 101 to limit the rocker of the floor embracing pole.

[0052] The rocker 101 is provided with a limiting groove 1010 matched with the limiting pin shaft 14; the limiting groove 1010 is an arc-shaped limiting groove with the rotary shaft of the rocker 101 as the center; the inner wall of the limiting groove 1010 is connected with a baffle 1012 through a spring device 1011; the baffle 1012 is used for elastically abutting against the side wall extending into the limiting groove 1010 under the action of the spring device 1011.

[0053] When the induction trigger device senses that the rocker 101 reaches the preset sensing position, the energy supply device is controlled to supply power to the electromagnetic driving device, and the limiting pin shaft 14 extends into the limiting groove 1010 of the rocker 101; when the rocker 101 reaches the preset sensing position, the included angle with the horizontal plane is 66°-69°; preferably 68°.

[0054] When the rocker 101 rotates to an included angle of 70°-77° (preferably 70°) with the horizontal plane, the side wall of the limiting pin shaft 14 contacts the baffle 1012 in the limiting groove 1010;

[0055] When the rocker 101 rotates to an included angle of 78°-80° (preferably 80°) with the horizontal plane, the side wall of the limiting pin shaft 14 contacts the baffle 1012 in the limiting groove 1010 and compresses the spring device 1011 to the compression limit, and the rocker 101 stops moving after being folded; the baffle 1012 and the spring device 1011 are arranged, which effectively reduces the impact of the movement of the rocker 101 on the limiting pin shaft 14, and at the same time, a certain elastic rebound force can be provided during the resetting of the rocker 101.

[0056] It is apparent that the application can be carried out by other embodiments that do not depart from the spirit or essential characteristics thereof. Thus, the embodiments disclosed in this specification are to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the application are intended to be embraced therein.

Claims

1. A tower assembly apparatus, characterized by, The application relates to a floor embracing pole and an electromagnetic rotary limiting device; the electromagnetic rotary limiting device comprises an electromagnetic limiting device (1), an inductive trigger device and an energy supply device; the electromagnetic limiting device (1) is installed at the hinge joint of a swing joint (100) and a swing arm (101) of the floor embracing pole; The electromagnetic limiting device (1) comprises an electromagnetic driving device; the electromagnetic driving device comprises a limiting pin shaft (14) for limiting the swing arm of the floor embracing pole; The inductive trigger device is used for inducting the position of the swing arm of the floor embracing pole; when the inductive trigger device inducts that the swing arm reaches a preset inductive position, the energy supply device supplies power to the electromagnetic driving device, the limiting pin shaft (14) is extended into the swing arm, and the swing arm of the floor embracing pole is limited; A limiting groove (1010) matched with the limiting pin shaft (14) is arranged on the swing arm (101); the limiting groove (1010) is an arc-shaped limiting groove with the rotation shaft of the swing arm (101) as the center; the inner wall of the limiting groove (1010) is connected with a baffle (1012) through a spring device (1011); the baffle (1012) is elastically abutted against the side wall extended into the limiting groove (1010) under the action of the spring device (1011); The electromagnetic driving device comprises an electromagnetic coil (11), a fixed iron core (12), a spring (13) and the limiting pin shaft (14); The fixed iron core (12) is arranged in the electromagnetic coil (11), the fixed iron core (12) is connected with a guide rod (122), the limiting pin shaft (14) is installed on the guide rod (122), a movable iron core (121) is fixed to the side of the limiting pin shaft (14) close to the fixed iron core (12), and the spring (13) is arranged on the guide rod (122) between the fixed iron core (12) and the movable iron core (121); When the electromagnetic coil (11) is powered, the movable iron core (121) drives the limiting pin shaft (14) to extend out of the electromagnetic driving device along the guide rod (122) away from the fixed iron core (12); When the electromagnetic coil (11) is powered off, the movable iron core (121) drives the limiting pin shaft (14) to retract into the electromagnetic driving device along the guide rod (122) close to the fixed iron core (12); The inductive trigger device is installed on the electromagnetic limiting device (1).

2. The tower assembly apparatus of claim 1, wherein, When the inductive trigger device inducts that the swing arm (101) reaches a preset inductive position, the energy supply device supplies power to the electromagnetic driving device, the limiting pin shaft (14) is extended into the limiting groove (1010) of the swing arm (101); when the swing arm (101) reaches the preset inductive position, the included angle between the swing arm (101) and the horizontal plane is 66-69 degrees; When the swing arm (101) rotates to an included angle of 70-77 degrees with the horizontal plane, the side wall of the limiting pin shaft (14) contacts the baffle (1012) in the limiting groove (1010); When the swing arm (101) rotates to an included angle of 78-80 degrees with the horizontal plane, the side wall of the limiting pin shaft (14) contacts the baffle (1012) in the limiting groove (1010) and compresses the spring device (1011) to the compression limit, and the swing arm (101) stops retracting.

3. The tower assembly apparatus of claim 1, wherein, A universal wheel (15) is arranged at the end of the limiting pin shaft (14) away from the fixed iron core (12); the universal wheel (15) is used for forming rolling friction with the swing arm of the floor embracing pole.

4. The tower assembly apparatus of claim 1, wherein, The electromagnetic driving device is a normally open direct-acting electromagnetic valve; and the energy supply device is a storage battery.

5. The tower assembly apparatus of claim 1, wherein, Further comprising: a ground remote control switch; the ground remote control switch is used for remotely controlling the energy supply device to be powered off.

Images