Defrosting device for sliding contact line of portal crane

Abstract

The invention belongs to the technical field of sliding contact line defrosting, and particularly discloses a door type travelling crane sliding contact line defrosting device which comprises a base and a heating bin, connecting blocks are arranged on the two sides of the base, protruding blocks are arranged on the two sides of the bottom of the heating bin, the connecting blocks are in bolted connection with the protruding blocks, openings are formed in the two ends of the heating bin, and a power receiving wheel is rotationally connected to the opening in one end of the heating bin. A hot air gun is arranged in the heating bin, an adjusting assembly used for adjusting the height of the heating bin is arranged on the base, and the hot air gun is provided with a control assembly used for turning on and off the hot air gun regularly. The problems that a travelling crane cannot be used normally due to the fact that frost layers can be formed on exposed metal surfaces of a sliding contact line, a pantograph and the like, abrasion of a power receiving wheel is aggravated by the frost layers, and the maintenance cost is increased are solved. The sliding contact line is defrosted by arranging the hot air gun and the heating bin, and the hot air gun and the heating bin are opened and closed regularly, so that the sliding contact line can be prevented from being frozen or frosted, the smoothness of electrical connection is guaranteed, the problem of unstable current is reduced, energy is saved, and the maintenance frequency is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of busbar defrosting, and in particular to a door-type busbar defrosting device. Background Art

[0002] Gantry crane is a small and light lifting equipment, which consists of bridge, trolley running mechanism, lifting mechanism, electrical system, etc. The appearance of gantry crane is like a door, and its bridge is supported on the track by legs, and can run longitudinally along the ground track. The lifting mechanism is suspended on the running track on the lower flange of the bridge, and can run horizontally along the bridge.

[0003] The usual way of receiving power for outdoor gantry cranes is by pantograph. The pantograph receives power by setting a conductive rail on the elevated track. The pantograph on the crane device contacts the conductive rail to realize power transmission.

[0004] However, when the portal crane is used in winter, due to the low temperature and high humidity in winter, a frost layer will form on the exposed metal surfaces of the portal crane's busbar, pantograph, etc., affecting normal conductivity, thereby causing the crane to be unable to be used normally. In addition, the frost layer will increase the friction between the receiving wheel and the busbar, causing increased wear of the receiving wheel, requiring frequent maintenance and replacement of the crane, increasing maintenance costs. Summary of the invention

[0005] The object of the present invention is to provide a defrosting device for the busbar of a portal crane, so as to solve the problem that when the portal crane is used in winter, a frost layer will form on the exposed metal surfaces of the busbar, pantograph, etc., resulting in the inability to use the crane normally, and the frost layer will aggravate the wear of the receiving wheel, thereby increasing maintenance costs.

[0006] In order to achieve the above-mentioned purpose, the basic scheme provided by the present invention is: a defrosting device for a door-type traveling busbar, comprising a base and a heating chamber, connecting blocks are provided on both sides of the base, protrusions are provided on both sides of the bottom of the heating chamber, the connecting blocks are bolted to the protrusions, openings are provided at both ends of the heating chamber, a power receiving wheel is rotatably connected to the opening at one end of the heating chamber, a hot air gun is provided in the heating chamber, an adjusting component for adjusting the height of the heating chamber is provided on the base, and the hot air gun is provided with a control component for timing the switch of the hot air gun.

[0007] The working principle of the present invention is as follows: when used in winter, first install the hot air gun in the heating chamber, then install the defrosting device on the carriage, so that the receiving wheel contacts the busbar, and then turn on the hot air gun at a fixed time through the control component. The hot air gun blows hot air to the receiving wheel, the receiving wheel is heated and exchanges heat with the busbar, so that the frost on the busbar melts, thereby achieving the defrosting effect.

[0008] The beneficial effects of the present invention are as follows: by providing a hot air gun and a heating chamber to defrost the busbar, and by controlling the components to open and close at a scheduled time, ice or frost on the busbar can be removed, thereby ensuring smooth electrical connection, reducing friction or current instability, saving energy, and reducing maintenance frequency.

[0009] Solution 2, which is the preferred basic solution, the control component includes a microcomputer time-controlled switch, a time relay, an AC contactor, a relay contact, a contactor coil and a 3DK switch, the relay contact is connected to the power supply, one end of the relay contact is connected to the input end of the microcomputer time-controlled switch, the output end of the microcomputer time-controlled switch is connected to the time relay, and the other end is connected to the AC contactor, the contactor coil is connected to the power supply, one end of the AC contactor coil is connected to the 3DK switch, the 3DK switch is connected to the input end of the hot air gun, and one end of the hot air gun is connected to the neutral line of the power supply; the control component is set to facilitate remote control The hot air gun is turned on and off at a scheduled time; Working principle: first set the time for the microcomputer time switch, the microcomputer time switch outputs an electrical signal at the predetermined time, energizes the coil of the time relay, and the relay contacts are delayed to close, thereby energizing the contactor coil. At this time, if the 3DK switch is in a closed state, the current of the power supply can reach the hot air gun through the AC contactor and the 3DK switch, thereby realizing the scheduled opening of the hot air gun. When the microcomputer time switch stops outputting electrical signals at the set closing time, the coil of the time relay loses power. After the set delay time, the contactor coil circuit is disconnected, thereby cutting off the power supply of the hot air gun and realizing the scheduled closing.

[0010] Solution three, which is the preferred basic solution, the adjustment component includes a screw rod 1, a support plate is provided on the base, a through hole is provided on the support plate, the screw rod 1 rotates and passes through the through hole, a nut is threadedly connected to one end of the screw rod 1, and a pull ring is provided at the other end, a cross bar is provided at one end of the heating chamber, and a spring is provided between the cross bar and the pull ring; through the screw rod, the support plate and the spring, it is convenient to adjust the height of the receiving wheel so that the receiving wheel is in full contact with the busbar; working principle: when it is necessary to increase the height of the receiving wheel, the nut on the screw rod 1 is rotated clockwise to move the screw rod 1 outward, the spring connected to the screw rod 1 is stretched, and the cross bar connected to the other end of the spring rotates counterclockwise with the pulling of the spring, thereby increasing the height of the receiving wheel on the heating chamber; when it is necessary to lower the height of the receiving wheel, the nut on the screw rod 1 is rotated counterclockwise to move the screw rod 1 inward, the spring connected to the screw rod 1 is compressed, and the cross bar connected to the other end of the spring rotates clockwise with the compression of the spring, thereby lowering the height of the receiving wheel on the heating chamber.

[0011] Option 4 is a preferred option of the basic option. The heating chamber is provided with a purge component for sweeping water droplets from the bus bar. The purge component is provided to facilitate sweeping water droplets after melted frost, thereby keeping the bus bar dry and improving the power supply effect.

[0012] Option five is a preferred option of option four. The purge assembly includes an L-shaped rod and a blowing unit. The L-shaped rod is detachably connected to the heating chamber, and a connecting assembly for adjusting the angle of the blowing unit is provided on the L-shaped rod.

[0013] Option six is ​​a preferred option of option five, wherein the blowing unit comprises an arc tube one and an arc tube two, wherein the arc tube one is flange-connected to the arc tube two, and a plurality of air outlet holes are provided on the inner sides of the arc tube one and the arc tube two, and an air outlet pipe is connected to the arc tube one, and an air collecting hood is fixedly connected to the heating chamber, and one end of the air outlet pipe passes through the heating chamber and is connected to the air collecting hood, and an air expansion nozzle is provided at the air outlet end of the hot air gun, and the air collecting hood is opposite to the air expansion nozzle; by arranging the arc tube one and the arc tube two, it is convenient to blow the busbar in all directions.

[0014] Option seven is a preferred option of Option five, wherein the connecting assembly includes a steel ball, a spherical groove is formed at one end of the L-shaped rod, the steel ball is embedded in the spherical groove, threaded holes are formed on both sides of the L-shaped rod close to the spherical groove, and screw rods 2 are provided on the threaded holes, and the steel ball is fixedly connected to the arc tube 1; by providing the steel ball, the spherical groove and the screw rod, it is convenient to adjust the angle of the arc tube 1 and the arc tube 2, so that the busbar is always located between the arc tube 1 and the arc tube 2, thereby achieving an effective purging effect; working principle: when it is necessary to adjust the angle of the arc tube 1 and the arc tube 2, first loosen the screw rod 2 on the L-shaped rod to relax the steel ball, and adjust the angle of the arc tube 1 and the arc tube 2 by rotating the steel ball. After the adjustment is completed, tighten the screw rod 2.

[0015] Option eight is a preferred option of option five, wherein the L-shaped rod is connected to one side of the heating bin by bolts; the L-shaped rod is connected to the heating bin by bolts, so that the L-shaped rod can be folded during transportation, thereby reducing the floor space.

[0016] Option nine, which is the preferred option of the basic option, is provided with three screws at the four corners of the base; three screws are provided at the four corners of the base to facilitate installation.

[0017] Option 10 is a preferred embodiment of Option 9, in which an insulator is provided on the screw rod 3; by providing the insulator, current conduction can be prevented to ensure personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of a door-type busbar defrosting device of the present invention;

[0019] Figure 2It is a partial cross-sectional view of a door-type busbar defrosting device of the present invention;

[0020] Figure 3 It is a top view of a door-type busbar defrosting device of the present invention;

[0021] Figure 4 It is a right side view of a door-type busbar defrosting device of the present invention;

[0022] Figure 5 It is a circuit diagram for controlling a timer switch of a hot air gun in a door-type busbar defrosting device of the present invention;

[0023] Figure 6 The present invention is a schematic structural diagram of a door-type busbar defrosting device during installation and use. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below through specific embodiments:

[0025] The reference numerals in the drawings of the specification include: 1 base; 101 connecting block; 102 screw rod three; 103 insulator; 2 heating chamber; 201 protrusion; 202 receiving wheel; 3 hot air gun; 301 air expansion nozzle; 401 microcomputer time-controlled switch; 402 time relay; 403 AC contactor; 404 relay contact; 405 contactor coil; 406, 3DK switch; 501 screw rod one; 502 support plate; 503 nut; 504 pull ring; 505 cross bar; 506 spring; 601 L-shaped rod; 602 arc tube one; 603 arc tube two; 604 exhaust pipe; 605 steel ball; 606 screw rod two; 607 wind condenser.

[0026] like Figures 1 to 6As shown: a door-type busbar defrosting device comprises a base 1 and a heating chamber 2, screw rods 102 are arranged at the four corners of the base 1, an insulator 103 is fixedly connected to the screw rods 102, connecting blocks 101 are fixedly connected to both sides of the base 1, and protrusions 201 are fixedly connected to both sides of the bottom of the heating chamber 2, the connecting blocks 101 are bolted to the protrusions 201, openings are arranged at both ends of the heating chamber 2, a receiving wheel 202 is rotatably connected to the opening at one end of the heating chamber 2, a hot air gun 3 is arranged in the heating chamber 2, an adjusting component for adjusting the height of the heating chamber 2 is arranged on the base 1, the adjusting component comprises a screw rod 501, a support plate 502 is fixedly connected to the base 1, a through hole is arranged on the support plate 502, the screw rod 501 rotates and penetrates the through hole, a nut 503 is threadedly connected to one end of the screw rod 501, and a pull ring 504 is fixedly connected to the other end, the heating chamber 2 is bolted to one end with a cross bar 505, and a spring 506 is hooked between the cross bar 505 and the pull ring 504. The hot air gun 3 is provided with a control component for timing the switch of the hot air gun 3, and the control component includes a microcomputer time-controlled switch 401, a time relay 402, an AC contactor 403, a relay contact 404, a contactor coil 405 and a 3DK switch 405. The relay contact 404 is connected to the power supply, one end of the relay contact 404 is connected to the input end of the microcomputer time-controlled switch 401, the output end of the microcomputer time-controlled switch 401 is connected to the time relay 402, and the other end is connected to the AC contactor 403, the contactor coil 405 is connected to the power supply, one end of the AC contactor coil 405 is connected to the 3DK switch 405, the 3DK switch 405 is connected to the input end of the hot air gun 3, and one end of the hot air gun 3 is connected to the neutral line of the power supply.

[0027] The heating chamber 2 is provided with a purge assembly for blowing water droplets from the busbar, the purge assembly includes an L-shaped rod 601 and a blowing unit, the blowing unit includes an arc tube 1 602 and an arc tube 2 603, the arc tube 1 602 is flange-connected to the arc tube 2 603, the inner sides of the arc tube 1 602 and the arc tube 2 603 are provided with a plurality of air outlets, the arc tube 1 602 is connected with an air outlet pipe 604, the heating chamber 2 is fixedly connected with an air condenser 607, one end of the air outlet pipe 604 passes through the heating chamber 2 and the air condenser 607 The air outlet of the hot air gun 3 is connected, and an air expansion nozzle 301 is provided at the air outlet end, and the air collecting hood 607 is directly opposite to the air expansion nozzle 301. The L-shaped rod 601 is bolted to the heating chamber 2, and a connecting component for adjusting the angle of the blowing unit is provided on the L-shaped rod 601. The connecting component includes a steel ball 605, and a spherical groove is opened at one end of the L-shaped rod 601. The steel ball 605 is embedded in the spherical groove. Threaded holes are provided on both sides of the L-shaped rod 601 close to the spherical groove, and a screw rod 2 606 is provided on the threaded hole. The steel ball 605 is fixedly connected to the arc tube 1 602.

[0028] The implementation method of this embodiment is as follows: when used in winter, first install the hot air gun 3 in the heating chamber 2, then install the defrosting device on the traveling vehicle, make the receiving wheel 202 contact with the busbar, then install the arc tube 2 603 on the arc tube 1 602, and then rotate the screw 2 606 to relax the steel ball 605, and by adjusting the angle of the arc tube 1 602 on the steel ball 605, ensure that the busbar is located in the middle of the arc tube 1 602 and the arc tube 2 603, and then preset the opening and closing time intervals on the microcomputer time-controlled switch 401, and then connect the relay contact 404 to the power supply. When the receiving wheel 202 is in contact with the busbar and moves, the microcomputer time-controlled switch 401 outputs an electrical signal at a predetermined time, and the relay contact 404 delays closing, so that the contactor coil 405 is energized. If 3 When the DK switch 406 is in a closed state, the current of the power supply can reach the hot air gun 3 through the AC contactor 403 and the 3DK switch 406, thereby realizing the timed opening of the hot air gun 3. The hot air gun 3 blows hot air to the power receiving wheel 202, and the power receiving wheel 202 is heated and exchanges heat with the busbar, so that the frost on the busbar melts, thereby achieving a defrosting effect. At the same time, a part of the hot air in the heating chamber 2 enters the arc tube 1 602 and the arc tube 2 603 through the wind collecting hood 607 and the air outlet pipe 604, and the melted water on the busbar is purged through the air outlet to remove the melted water droplets on the busbar. When the microcomputer time-controlled switch 401 stops outputting electrical signals at the set closing time, the contact 404 of the relay loses power, disconnects the circuit of the contactor coil 405, thereby cutting off the power supply of the hot air gun 3 and realizing timed closing.

[0029] When it is necessary to increase the height of the power-receiving wheel 202, the nut 503 on the screw 501 is rotated clockwise to move the screw 501 outward, the spring 506 connected to the screw 501 is stretched, and the cross bar 505 connected to the other end of the spring 506 rotates counterclockwise as the spring 506 is pulled, so that the heating chamber 2 rotates counterclockwise, thereby adjusting the height of the power-receiving wheel 202 on the heating chamber 2; when it is necessary to lower the height of the power-receiving wheel 202, the nut 503 on the screw 501 is rotated counterclockwise to move the screw 501 inward, the spring 506 connected to the screw 501 is compressed, and the cross bar 505 connected to the other end of the spring 506 rotates clockwise as the spring 506 is compressed, thereby lowering the height of the power-receiving wheel 202 on the heating chamber 2.

[0030] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A door-type busbar defrosting device, characterized in that: The invention comprises a base (1) and a heating chamber (2), wherein connecting blocks (101) are provided on both sides of the base (1), and protrusions (201) are provided on both sides of the bottom of the heating chamber (2), wherein the connecting blocks (101) are bolted to the protrusions (201), and openings are provided at both ends of the heating chamber (2), and a power receiving wheel (202) is rotatably connected to the opening at one end of the heating chamber (2), and a hot air gun (3) is provided in the heating chamber (2), and an adjustment component for adjusting the height of the heating chamber (2) is provided on the base (1), and the hot air gun (3) is provided with a control component for timing the hot air gun (3) to be turned on and off.

2. A door-type busbar defrosting device according to claim 1, characterized in that: The control component comprises a microcomputer time-controlled switch (401), a time relay (402), an AC contactor (403), a relay contact (404), a contactor coil (405) and a 3DK switch (406); the relay contact (404) is connected to a power source; one end of the relay contact (404) is connected to an input end of the microcomputer time-controlled switch (401); the output end of the microcomputer time-controlled switch (401) is connected to the time relay (402) and the other end is connected to the AC contactor (403); the contactor coil (405) is connected to a power source; one end of the AC contactor coil (405) is connected to the 3DK switch (406); the 3DK switch (406) is connected to an input end of a hot air gun (3); and one end of the hot air gun (3) is connected to a neutral line of a power source.

3. A door-type busbar defrosting device according to claim 1, characterized in that: The adjustment component comprises a screw rod (501), a support plate (502) is provided on the base (1), a through hole is provided on the support plate (502), the screw rod (501) rotates and passes through the through hole, one end of the screw rod (501) is threadedly connected with a nut (503), and the other end is provided with a pull ring (504), one end of the heating chamber (2) is provided with a cross bar (505), and a spring (506) is provided between the cross bar (505) and the pull ring (504).

4. A door-type busbar defrosting device according to claim 1, characterized in that: The heating chamber (2) is provided with a blowing component for blowing away water droplets on the busbar.

5. A door-type busbar defrosting device according to claim 4, characterized in that: The purge assembly comprises an L-shaped rod (601) and a blowing unit, wherein the L-shaped rod (601) is detachably connected to the heating chamber (2), and a connecting assembly for adjusting the angle of the blowing unit is provided on the L-shaped rod (601).

6. A door-type busbar defrosting device according to claim 5, characterized in that: The blowing unit comprises an arc tube 1 (602) and an arc tube 2 (603), wherein the arc tube 1 (602) is flange-connected to the arc tube 2 (603), and the inner sides of the arc tube 1 (602) and the arc tube 2 (603) are both provided with a plurality of air outlet holes, and the arc tube 1 (602) is connected with an air outlet pipe (604), and a wind collecting hood (607) is fixedly connected inside the heating chamber (2), and one end of the air outlet pipe (604) passes through the heating chamber (2) and is connected with the wind collecting hood (607), and the air outlet end of the hot air gun (3) is provided with an air expansion nozzle (301), and the wind collecting hood (607) is directly opposite to the air expansion nozzle (301).

7. A door-type busbar defrosting device according to claim 5, characterized in that: The connection assembly comprises a steel ball (605), one end of the L-shaped rod (601) is provided with a spherical groove, the steel ball (605) is embedded in the spherical groove, the L-shaped rod (601) is provided with threaded holes on both sides close to the spherical groove, the threaded holes are provided with a second screw rod (606), and the steel ball (605) is fixedly connected to the arc tube (602).

8. A door-type busbar defrosting device according to claim 5, characterized in that: The L-shaped rod (601) is bolted to one side of the heating chamber (2).

9. A door-type busbar defrosting device according to claim 1, characterized in that: Screw rods (102) are provided at the four corners of the base (1).

10. A door-type busbar defrosting device according to claim 9, characterized in that: An insulator (103) is provided on the screw rod three (102).

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