A conductive trolley

Abstract

The scheme discloses an electrically-conductive trolley in the technical field of electric arc furnaces, which comprises a clamping mechanism, an electrically-conductive track and a trolley body arranged on the electrically-conductive track. The trolley body comprises a trolley frame, the lower part of the trolley frame is connected with a roller rolling on the electrically-conductive track, and a driving mechanism for driving the roller to roll is arranged on the trolley frame. The clamping mechanism comprises a workbench and clamping assemblies symmetrically arranged at both ends of the workbench, and the workbench is connected with the trolley frame through a lifting mechanism. The clamping assembly comprises a telescopic device and an electrically-conductive busbar connected to the end of the telescopic device, and an electric cabinet for providing power supply for the telescopic device, the lifting mechanism and the driving mechanism is arranged on the trolley frame. The structure of the scheme is simple, and the operation of connecting and conducting or clamping the furnace end busbar and the rectifier side busbar and the operation of disconnecting and relaxing is very convenient, so that the operation is smooth during the rotation of multiple electric arc furnaces.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field related to electric arc furnace, in particular to a conductive trolley. BACKGROUND

[0002] Electric arc furnace is an electric furnace that uses electrode arc to generate high temperature to smelt ore and metal. When gas discharge forms electric arc, energy is very concentrated, and the temperature in arc area is above 3000°C. For smelting metal, electric arc furnace has greater flexibility than other steelmaking furnace processes, can effectively remove impurities such as sulfur and phosphorus, furnace temperature is easy to control, equipment occupies small area, and is suitable for smelting high-quality alloy steel. Graphite electrode is a conductor that releases electric energy in the form of electric arc to heat and melt furnace charge, which is made of petroleum coke and needle coke as raw materials, coal tar pitch as binder, through calcination, batching, kneading, molding, baking, graphitization and machining.

[0003] The temperature of electric arc furnace reaches above 3000°C, and it takes about 60 hours to complete the heating and melting of furnace charge. When power is on, the furnace end busbar needs to be connected with the rectifier side busbar. After power is on at both ends, the electric hoist is heated. After each use of each electric hoist, the material in the electric hoist needs to be taken out after the electric arc furnace is cooled, and the cooling time is very long due to the high temperature.

[0004] In order to improve production efficiency, multiple electric arc furnaces are often used in rotation to avoid production interruption. In order to facilitate production, multiple electric arc furnaces are arranged in order. Therefore, an electrode holder is used to transfer between multiple electric arc furnaces, and the electrode holder clamps the furnace end busbar and the rectifier side busbar for conduction.

[0005] For example, the electrode clamping device with publication number CN104520662B is used to clamping electrode of electric arc furnace, and includes at least one long tension element, which is configured to extend around the circumference of the electrode of the electric arc furnace in use, so that the tension element defines a tensionable ring around the electrode, which is suitable for applying clamping force on the electrode when tensioned. The clamping device also includes a tensioning mechanism, which includes a tensioning component that is suitable for applying tension on the end region of the clamping element to tension the tensioning element. The force applied by the tensioning component points in the radial direction relative to the electrode. As can be seen from the drawings in the application file, the structure of the device is very complex, and the operation is extremely cumbersome when the device is used to transfer between multiple electric arc furnaces to clamp and release the electrode, which is not conducive to efficient production. SUMMARY

[0006] The present invention aims to provide a conductive trolley to solve the problems in the prior art of complex electrode clamping devices and cumbersome operations of clamping and loosening electrodes during the rotation of multiple electric arc furnaces.

[0007] A conductive trolley in this solution includes a clamping mechanism, a conductive track and a trolley body arranged on the conductive track. The trolley body includes a frame, a roller mounted on the conductive track is connected to the bottom of the frame, and a driving mechanism for driving the roller to roll is installed on the frame. The clamping mechanism includes a workbench and clamping components mirror-symmetrically arranged at both ends of the workbench, and the workbench and the frame are connected by a lifting mechanism; the clamping component includes a telescopic device and a conductive busbar connected to the end of the telescopic device, and an electrical cabinet for providing power to the telescopic device, the lifting mechanism and the driving mechanism is installed on the frame.

[0008] The working principle of this solution is: the trolley body is moved to the electric arc furnace through the driving mechanism, and the lifting mechanism raises the workbench so that the furnace end busbar and the rectifier side busbar are placed between the mirror-symmetrical clamping components on the workbench at the same time, and then the telescopic device is started so that the conductive busbar connected to the telescopic device clamps and fixes the furnace end busbar and the rectifier side busbar, and finally the power is turned on to heat the electric arc furnace continuously for a long time.

[0009] When the heating of the heating furnace that has completed smelting is stopped, the telescopic device drives the conductive busbars on both sides of the furnace end busbar and the rectifier side busbar to move away from each other, then lowers the workbench, and drives the trolley body to move to another arc furnace that needs to be heated again. The above process is repeated to heat multiple arc furnaces.

[0010] The beneficial technical effects of this solution are: the structure of this solution is simple, and the operations of connecting or clamping the furnace end busbar and the rectifier side busbar, as well as disconnecting or loosening the power supply are very convenient, so that the operation is smooth during the rotation of multiple arc furnaces.

[0011] Furthermore, there are two groups of clamping components at both ends of the workbench, and the two conductive busbars located at the same end of the workbench are connected by a soft aluminum busbar.

[0012] Further, the clamping assembly further comprises a connecting assembly connected between the end of the telescopic device and the conductive bus, the connecting assembly comprising two longitudinally parallel connecting plates, and a pressure maintaining spring connected between the two connecting plates. After the clamping action is completed, the pressure maintaining spring is used for pressure maintaining, and after entering the working state, all power equipment is completely closed, i.e. the telescopic device, the lifting mechanism and the driving mechanism are stopped from power supply, only a small amount of monitoring power supply is powered by a storage battery, and the equipment without the pressure maintaining spring consumes 1200 degrees of electricity in 90 hours of each working cycle. If the telescopic device adopts a hydraulic device, the hydraulic device will be in a working state all the time, and after the pressure maintaining spring is added, the equipment consumes less than 100 degrees of electricity in 90 hours, and the hydraulic device only works for several minutes, so that the equipment failure rate is greatly reduced, and the equipment life is greatly prolonged.

[0013] Further, the connecting plate connected with the telescopic device is provided with a first locking oil cylinder between the connecting plate and the workbench.

[0014] Further, the lifting mechanism comprises a lifting oil cylinder, and a lifting guide column connected with the workbench in a sliding manner is connected to the vehicle frame, and the lifting oil cylinder is connected with the workbench.

[0015] Further, a support plate is further connected to the vehicle frame, a fixed plate is connected to the top of the support plate, and the top of the lifting guide column is connected with the fixed plate.

[0016] Further, a second locking oil cylinder for fixing the workbench at the highest position is mounted on the support plate. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the conductive trolley. DETAILED DESCRIPTION

[0018] The following will be further described in detail through specific embodiments:

[0019] The reference signs in the drawings of the specification comprise: a conductive guide rail 1, a power taking connector 2, an electric appliance cabinet 3, a driving mechanism 4, a lifting oil cylinder 5, a lifting guide column 6, a pressing oil cylinder 7, a first locking oil cylinder 8, a pressure maintaining spring 9, a rectifier side bus 10, a conductive bus 11, a furnace end bus 12, a workbench 13, a second locking oil cylinder 14, a support plate 15, a soft aluminum bus 16, a connecting plate 17, a fixed plate 18, and a vehicle frame 19.

[0020] The embodiment is basically as shown in the drawings Figure 1As shown: a conductive trolley, comprising a clamping mechanism, a conductive rail and a trolley body arranged on the conductive rail, the trolley body comprises a frame 19, the lower part of the frame 19 is connected with a roller which is rolling installed on the conductive rail, the frame 19 is installed with a driving mechanism 4 which drives the roller to roll, the clamping mechanism has two and the same structure, the clamping mechanism comprises a workbench 13 and a clamping assembly which is symmetrically arranged at both ends of the workbench 13, the clamping assembly at both ends of the workbench 13 is respectively two groups, the clamping assembly comprises a pressing cylinder 7 (as a telescopic device) and a conductive busbar 11 located at the end of the pressing cylinder 7, and the two conductive busbars 11 located at the same end of the workbench 13 are connected by a soft aluminum busbar 16.

[0021] The clamping assembly further comprises a connecting assembly connected between the end of the pressing cylinder 7 and the conductive busbar 11, the connecting assembly comprises two longitudinally parallel connecting plates 17, and a pressure maintaining spring 9 is connected between the two connecting plates 17. The connecting plate 17 connected with the pressing cylinder 7 is provided with a first locking cylinder 8 between the workbench 13.

[0022] The workbench 13 is connected with the frame 19 through a lifting mechanism; the lifting mechanism comprises a lifting cylinder 5, the frame 19 is connected with a lifting guide column 6 which is slidingly connected with the workbench 13 around, and the lifting cylinder 5 is connected with the workbench 13. The frame 19 is further connected with a supporting plate 15, the top of the supporting plate 15 is connected with a fixed plate 18, and the top of the lifting guide column 6 is connected with the fixed plate 18. The supporting plate 15 is installed with a second locking cylinder 14 for fixing the workbench 13 at the highest position.

[0023] The frame 19 is installed with an electrical appliance cabinet 3 which provides power supply for electrical appliances such as telescopic devices, lifting mechanism and driving mechanism 4, and the electrical appliance cabinet 3 is connected with a power taking connector 2.

[0024] The specific implementation process is as follows: the trolley body is moved to the electric arc furnace by the driving mechanism 4, the workbench 13 is raised by the lifting cylinder 5, so that the furnace end busbar 12 and the rectifier side busbar 10 are simultaneously placed between the mirror image symmetric clamping assemblies on the workbench 13, then the pressing cylinder 7 is started, so that the conductive busbar 11 clamps and fixes the furnace end busbar 12 and the rectifier side busbar 10, and finally the electric arc furnace is heated for a long time. When the heating furnace which has completed smelting stops heating, the pressing cylinder 7 drives the conductive busbars 11 on both sides of the furnace end busbar 12 and the rectifier side busbar 10 to move away from each other, then the workbench 13 is lowered, and the trolley body is driven to move to another electric arc furnace which needs to be heated, and the above process is repeated to heat multiple electric arc furnaces.

Claims

1. A conductive trolley, characterized in that: The trolley comprises a clamping mechanism, a conductive track, and a trolley body mounted on the conductive track. The trolley body comprises a frame, a roller mounted on the conductive track is connected to the lower portion of the frame, and a drive mechanism for driving the roller is mounted on the frame. The clamping mechanism comprises a workbench and clamping assemblies mirror-symmetrically arranged at both ends of the workbench, and the workbench and the frame are connected by a lifting mechanism. The clamping assembly comprises a telescopic device and a conductive busbar connected to the end of the telescopic device. An electrical cabinet for providing power to the telescopic device, the lifting mechanism, and the drive mechanism is mounted on the frame. There are two groups of clamping assemblies at both ends of the workbench, and the two conductive busbars located at the same end of the workbench are connected by a soft aluminum busbar; the clamping assembly also includes a connecting assembly connected between the end of the telescopic device and the conductive busbar, and the connecting assembly includes two longitudinally parallel connecting plates, and a pressure-maintaining spring is connected between the two connecting plates; a first locking cylinder is provided between the connecting plate connected to the telescopic device and the workbench; the lifting mechanism includes a lifting cylinder, and a lifting guide column slidably connected to the four sides of the workbench is connected to the frame, and the lifting cylinder is connected to the workbench.

2. A conductive trolley according to claim 1, characterized in that: The frame is also connected to a support plate, the top of the support plate is connected to a fixing plate, and the top of the lifting guide column is connected to the fixing plate.

3. A conductive trolley according to claim 2, characterized in that: A second locking oil cylinder for fixing the workbench at the highest point is installed on the support plate.

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