Emergency Cover Lifting and Driving Device and Method for Torpedo Ladle Molten Iron Transport Vehicle

Abstract

The invention relates to the field of metal casting, and in particular to an emergency cover-opening driving device and method for a torpedo tank molten iron transport vehicle. The device comprises a supporting frame, a fixed pulley assembly, a traction rope, a crank, a shift fork, a counterweight trolley, a guide frame and a lifting mechanism. The fixed pulley assembly comprises two fixed pulleys arranged side by side, one end of the traction rope is arranged between the two fixed pulleys and connected to the counterweight trolley; the middle part of the traction rope is divided into two strands and extends to both sides along the two fixed pulleys as side ends respectively, bearing seats are respectively installed on both sides of the supporting frame, and two rotating shafts are respectively passed through between the bearing seats on both sides; one end of the rotating shaft is connected to one end of the crank, and the other end of the crank is connected to the side end of the traction rope, and a shift fork is fixedly connected to the rotating shaft, and the shift fork is used to shift a shift block on a telescopic tank cover mechanism; the counterweight trolley can slide vertically along the guide frame; the lifting mechanism is used to drive the counterweight trolley to perform lifting and lowering actions; the invention does not require each vehicle to be configured separately, and emergency cover-opening operation does not require parking.

Description

Technical Field

[0001] The present invention relates to the field of metal casting, and in particular to an emergency cover opening and closing driving device and method for a torpedo ladle hot metal transport vehicle. Background Art

[0002] In order to keep the hot metal in the torpedo ladle of the hot metal transport vehicle in the steel mill warm and prevent smoke from emitting from the ladle mouth during transportation, a cover opening and closing device is adopted. The specific process is as follows: The ironmaking plant fills the torpedo ladle hot metal transport vehicle with hot metal - the ironmaking plant closes the heat preservation cover of the torpedo ladle hot metal transport vehicle (without stopping) - the train transports the torpedo ladle hot metal transport vehicle to the steel mill - the steel mill opens the heat preservation cover of the torpedo ladle hot metal transport vehicle (without stopping) - the steel mill pours out the hot metal in the torpedo ladle - the steel mill closes the heat preservation cover of the torpedo ladle hot metal transport vehicle (without stopping) - the train transports the torpedo ladle hot metal transport vehicle to the ironmaking plant - the ironmaking plant opens the heat preservation cover of the torpedo ladle hot metal transport vehicle (without stopping) - the ironmaking plant fills the torpedo ladle hot metal transport vehicle with hot metal again, completing one process.

[0003] The cover opening and closing of the torpedo ladle hot metal transport vehicle adopts a spring type tooth-pulling machine device, as disclosed in the invention patent with the application number 202210748571.8 and the patent name "A ground fixed-point tooth-pulling type torpedo ladle cover opening and closing device and its use method". The heat preservation cover is opened and closed during the transportation of the hot metal ladle car, with high efficiency and meeting the high-rhythm production of the steel mill. However, this device still has problems such as more failures, difficult maintenance, and the success rate is difficult to guarantee to reach 100% (it is measured that the success rate of opening the cover once is 99.5%). Therefore, this patent discloses that a spare cover opening and closing device can be configured, and the disclosed spare cover opening and closing device is an on-vehicle electric mode, which requires a set to be configured for each vehicle separately. Since the power source is driven by an electric mode, before entering the ironmaking blast furnace or the steelmaking workshop, the torpedo ladle car needs to be parked first, then the external power supply is connected to the socket of this device for power supply, and then the emergency operation of the spare cover opening and closing device is carried out; the entire operation process requires parking and secondary operation, greatly increasing the process time, which is not conducive to the fast-rhythm iron tapping production mode of the blast furnace, resulting in untimely turnover and transportation of the torpedo ladle car, and affecting the production rhythm of iron tapping and steelmaking. Summary of the Invention

[0004] In view of the above problems, the present invention provides an emergency cover opening and closing driving device and method for a torpedo ladle hot metal transport vehicle, which is set at fixed points along the existing spring type tooth-pulling machine device, does not require a set to be configured for each vehicle separately, the emergency cover opening and closing operation does not require parking, does not affect the production rhythm of iron tapping and steelmaking, and has low failures and is easy to maintain, and the success rate of opening and closing the cover is higher.

[0005] To achieve the above object, the present invention is implemented according to the following technical solutions:

[0006] On the one hand, the present invention provides an emergency cover lifting and driving device for a torpedo ladle molten iron transport vehicle, which includes a support frame, a fixed pulley assembly, a traction rope, a crank, a fork, a counterweight trolley, a guiding frame and a lifting mechanism. The support frame is fixed to the ground, and the fixed pulley assembly is fixedly installed on the support frame. The fixed pulley assembly includes two fixed pulleys arranged side by side. One end of the traction rope is vertically downwardly arranged between the two fixed pulleys and is connected to the top end of the counterweight trolley; the middle part of the traction rope is divided into two strands and extends along the two fixed pulleys to both sides as side ends. Bearing seats are respectively installed on both sides of the support frame along the traveling direction of the transport vehicle. There are two bearing seats on each side along the direction perpendicular to the traveling direction of the transport vehicle. Two rotating shafts are respectively passed through between the bearing seats on both sides; one end of the rotating shaft biased towards the fixed pulley assembly is connected to one end of the crank, and the other end of the crank is connected to the side end of the traction rope on the corresponding side. A fork is fixedly connected to the rotating shaft along the direction parallel to the crank. The lower end of the fork is used to toggle the block on the telescopic ladle cover mechanism; a guiding frame is fixedly arranged on the lower side of the fixed pulley assembly. One side of the counterweight trolley is slidably connected to the guiding frame, and the counterweight trolley can slide vertically along the guiding frame; the bottom end of the counterweight trolley is connected to the action end of the lifting mechanism, and the lifting mechanism is used to drive the counterweight trolley to perform lifting actions.

[0007] In a technical solution, the lifting mechanism is a double-acting double-direction cylinder, which has two cavities inside. Two piston rods, one upward and one downward, are respectively arranged in the two cavities. The bottom end of the lower piston rod is hinged to the bottom of the guiding frame, and the top end of the upper piston rod is hinged to the bottom of the counterweight trolley; the cylinder housing is slidably connected to the guiding frame; the upper and lower parts of the double-acting double-direction cylinder are respectively connected to the air source cabinet through pipelines.

[0008] In a technical solution, the two fixed pulleys are installed on a fixed pulley bracket, and fixing pins for preventing the rope from coming out of the groove are installed on the fixed pulley bracket outside the rope grooves of the fixed pulleys.

[0009] In a technical solution, cantilever frames are respectively fixed on both sides of the support frame along the traveling direction of the transport vehicle, and the bearing seats are correspondingly installed on the cantilever frames.

[0010] In a technical solution, the guiding frame is a square frame welded by steel. Inside the guiding frame, the slide rails for the counterweight trolley are formed by welding angle steels; a guiding groove for defining the direction of the cylinder housing and matching the height of the cylinder housing is formed by steel forming at the lower part inside the guiding frame.

[0011] In a technical solution, buffer blocks are arranged on both sides of the top end of the guiding groove and are used to block the counterweight trolley when reaching the lower limit position of the cylinder.

[0012] In one technical solution, the shift fork includes a shift handle portion and a fork portion. The shift handle portion is rod-shaped. The top end of the shift handle portion is fixedly connected to the rotating shaft, and the bottom end of the shift handle portion is connected to the fork portion. The fork portion is in a C-shape perpendicular to the traveling direction of the transport vehicle, and the open end of the fork portion faces downward.

[0013] In one technical solution, a cover plate is provided at the top end of the fixed pulley bracket for protecting the fixed pulley assembly.

[0014] On the other hand, the present invention provides an emergency cover opening and closing driving method for a torpedo ladle hot metal transport vehicle, which is realized according to the above-mentioned emergency cover opening and closing driving device for a torpedo ladle hot metal transport vehicle, and includes the following usage modes:

[0015] Mode 1: When the cover opening and closing device of the torpedo ladle hot metal transport vehicle is working normally, the lifting mechanism drives the counterweight trolley to land at the lowest position. At this time, the traction rope pulls the two side cranks to deflect in opposite directions, and the lower end of the shift fork leaves the shift block in the vertical direction.

[0016] Mode 2: When a failure occurs in the cover opening operation of the transport vehicle, when the transport vehicle travels to the right until the shift block crosses the left shift fork, the lifting mechanism drives the counterweight trolley to move upward. The two side cranks and the shift fork deflect to the vertical direction under the action of gravity. When the transport vehicle travels until the shift block contacts the lower end of the right shift fork, under the pulling force of the counterweight trolley on the traction rope, the right shift fork forms a block on the shift block to achieve cover opening; the transport vehicle continues to move forward, the right shift fork continues to rotate up with the torpedo ladle car, the counterweight trolley rises synchronously with the lifting mechanism, and after the right shift fork passes over the shift block, it returns to its original position under its own weight, and the counterweight trolley descends synchronously with the lifting mechanism.

[0017] Mode 3: When a failure occurs in the cover closing operation of the transport vehicle, when the transport vehicle travels to the left until the shift block crosses the right shift fork, the lifting mechanism drives the counterweight trolley to move upward. The two side cranks and the shift fork deflect to the vertical direction under the action of gravity. When the transport vehicle travels until the shift block contacts the lower end of the left shift fork, under the pulling force of the counterweight trolley on the traction rope, the left shift fork forms a block on the shift block to achieve cover closing; the transport vehicle continues to move forward, the left shift fork continues to rotate up with the torpedo ladle car, the counterweight trolley rises synchronously with the lifting mechanism, and after the left shift fork passes over the shift block, it returns to its original position under its own weight, and the counterweight trolley descends synchronously with the lifting mechanism.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The emergency cover lifting and removing driving device of the hot metal transport vehicle of the present invention uses a lifting mechanism to drive a counterweight trolley to perform lifting actions. The counterweight trolley and the crank connected to both ends of the traction rope are respectively arranged on both sides of the fixed pulley. The tension between the traction rope and the counterweight trolley is transmitted to the tension between the traction rope and the crank through the fixed pulley. Since the two side ends of the steel wire rope are connected to the two cranks, when the torpedo ladle hot metal transport vehicle passes through the fork in the right and left directions, the fork correspondingly gives a driving force to the fork block to realize opening or closing the cover; by adjusting the counterweight of the counterweight trolley, the driving force of the fork on the fork block can be adjusted.

[0020] The device of the present invention is set at fixed points along the existing spring-type tooth-poking machine device, and it is not necessary to configure it separately for each vehicle, which reduces the configuration cost of the emergency cover lifting and removing device; the emergency cover lifting and removing operation is driven by the horizontal force generated by the fork on the fork block, and the success rate of opening and closing the cover is higher; moreover, it is not necessary to stop the vehicle during the cover lifting and removing operation, which does not affect the production rhythm of tapping and steelmaking; the overall failure rate of the device is low and it is easy to maintain, and it has good adaptability in the open air, and has a wide popularization prospect. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0022] Figure 1 It is a schematic structural diagram of the emergency cover lifting and removing driving device of the torpedo ladle hot metal transport vehicle of the present invention during the cover removing process;

[0023] Figure 2 It is a schematic structural diagram of the emergency cover lifting and removing driving device of the torpedo ladle hot metal transport vehicle of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the connection position of the crank and the fork;

[0025] Figure 4 It is a schematic structural diagram of the connection of the double-acting double-direction cylinder in the guiding frame;

[0026] Figure 5 It is a schematic structural diagram of the fixed pulley installation;

[0027] Figure 6 For Figure 5 right view structural diagram of

[0028] Figure 7 It is a schematic structural diagram of the double-acting double-direction cylinder;

[0029] Figure 8It is a longitudinal sectional structure schematic diagram of a double-acting cylinder with two-way action.

[0030] Reference numerals: 1 - support frame; 2 - towing rope; 3 - crank; 4 - fork; 41 - fork handle part; 42 - fork part; 5 - counterweight trolley; 6 - guiding frame; 7 - fixed pulley; 8 - bearing seat; 9 - rotating shaft; 10 - bolt; 11 - double-acting cylinder with two-way action; 111 - upper piston rod; 112 - lower piston rod; 113 - cylinder housing; 12 - fixed pulley bracket; 13 - fixing pin; 14 - cantilever frame; 15 - guiding groove; 16 - buffer block; 17 - sleeve. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention.

[0032] Based on the problem that it is difficult to ensure a success rate of 100% for the existing torpedo ladle cover adding and removing device, as Figure 1 and Figure 2 shown, the embodiments of the present invention propose an emergency cover adding and removing driving device for a torpedo ladle molten iron transport vehicle, which includes a support frame 1, a fixed pulley assembly, a towing rope 2, a crank 3, a fork 4, a counterweight trolley 5, a guiding frame 6 and a lifting mechanism. The support frame 1 is fixed to the ground and provides a supporting function for the fixed pulley assembly and the bearing seat 8. The support frame 1 is in a portal shape. The fixed pulley assembly is fixedly installed on the support frame 1. The fixed pulley assembly includes two fixed pulleys 7 arranged side by side. One end of the towing rope 2 is vertically downwardly arranged between the two fixed pulleys 7 and is connected to the top end of the counterweight trolley 5; the middle part of the towing rope 2 is divided into two strands and respectively extends to both sides along the two fixed pulleys 7 to form side ends. Bearing seats 8 are respectively installed on both sides of the support frame 1 along the traveling direction of the transport vehicle. There are two bearing seats 8 on each side along the direction perpendicular to the traveling direction of the transport vehicle. As Figure 3 shown, two rotating shafts 9 are respectively passed through between the bearing seats 8 on both sides; one end of the rotating shaft 9 biased towards the fixed pulley assembly is fixedly connected to one end of the crank 3, and the other end of the crank 3 is connected to the side end of the towing rope 2 on the corresponding side. A fork 4 is fixedly connected to the rotating shaft 9 along the direction parallel to the crank 3. The lower end of the fork 4 is used to toggle a block on the telescopic ladle cover mechanism; a guiding frame 6 is fixedly arranged below the fixed pulley assembly. One side of the counterweight trolley 5 is slidably connected to the guiding frame 6, and the counterweight trolley 5 can slide vertically along the guiding frame 6; the bottom end of the counterweight trolley 5 is connected to the action end of the lifting mechanism, and the lifting mechanism is used to drive the counterweight trolley to perform a lifting action.

[0033] The existing spring-type tooth-poking device for adding and removing the torpedo ladle cover has its ladle cover connected to the transport vehicle frame through a telescopic mechanism to form a telescopic ladle cover mechanism, asFigure 1 It is shown that the can lid of the embodiment of the present invention is suspended and connected to the telescopic mechanism on its left side. A shifting block is connected to the telescopic mechanism. By horizontally shifting the shifting block, the shifting block together with the telescopic mechanism can perform telescopic movement to drive the can lid to open or close. The emergency cover adding and removing driving device of the hot metal transport vehicle of the present invention uses a lifting mechanism to drive the counterweight trolley 5 to perform lifting actions. The counterweight trolley 5 and the crank 3 connected to both ends of the towing rope 2 are respectively arranged on both sides of the fixed pulley 7. The pulling force between the towing rope 2 and the counterweight trolley 5 is transmitted to the pulling force between the towing rope 2 and the crank 3 through the fixed pulley 7. Since the two side ends of the steel wire rope 2 are connected to the two cranks 3, when the torpedo can hot metal transport vehicle passes through the fork 4 to the right and left directions, the fork 4 correspondingly gives a driving force to the shifting block to realize opening or closing the lid; by adjusting the counterweight of the counterweight trolley 5, the driving force of the fork 4 on the shifting block can be adjusted.

[0034] It should be understood that the forward and backward directions of the torpedo can hot metal transport vehicle in the present invention are determined in cooperation based on the connection direction of the telescopic mechanism. The "right" and "left" herein are not limitations on directions. In actual implementation, it should be set or adjusted in cooperation according to the purpose of the present invention.

[0035] Specifically, when the cover adding and removing device of the torpedo can hot metal transport vehicle works normally, the lifting mechanism drives the counterweight trolley 5 to land at the lowest position. At this time, the towing rope 2 pulls the two cranks 3 to deflect in the opposite direction, and the lower end of the fork 4 leaves the shifting block in the vertical direction;

[0036] When a fault occurs in the cover removing action of the transport vehicle, when the transport vehicle moves to the right until the shifting block crosses the fork 4 on the left side, the lifting mechanism drives the counterweight trolley 5 to move upward. The two cranks 3 and the fork 4 deflect to the vertical direction under the action of gravity. When the transport vehicle moves to the point where the shifting block contacts the lower end of the fork 4 on the right side, under the pulling force of the counterweight trolley 5 on the towing rope 2, the fork 4 on the right side forms a block on the shifting block to realize opening the lid; the transport vehicle continues to move, the fork 4 on the right side continues to rotate up with the torpedo can vehicle, the counterweight trolley 5 rises synchronously with the lifting mechanism. After the fork 4 on the right side passes over the shifting block, it returns to its original position under its own weight, and the counterweight trolley 5 descends synchronously with the lifting mechanism;

[0037] When a fault occurs in the cover adding action of the transport vehicle, when the transport vehicle moves to the left until the shifting block crosses the fork 4 on the right side, the lifting mechanism drives the counterweight trolley 5 to move upward. The two cranks 3 and the fork 4 deflect to the vertical direction under the action of gravity. When the transport vehicle moves to the point where the shifting block contacts the lower end of the fork 4 on the left side, under the pulling force of the counterweight trolley 5 on the towing rope 2, the fork 4 on the left side forms a block on the shifting block to realize closing the lid; the transport vehicle continues to move, the fork 4 on the left side continues to rotate up with the torpedo can vehicle, the counterweight trolley 5 rises synchronously with the lifting mechanism. After the fork 4 on the left side passes over the shifting block, it returns to its original position under its own weight, and the counterweight trolley 5 descends synchronously with the lifting mechanism.

[0038] The present invention is set at fixed points along the existing spring-type tooth-poking machine device, without the need to be configured separately for each vehicle, reducing the configuration cost of the emergency cover-opening and cover-closing device; the emergency cover-opening and cover-closing operations are driven by the horizontal force generated by the fork 4 on the block, with a higher success rate of opening and closing the cover; and there is no need to stop the vehicle during the cover-opening and cover-closing operations, without affecting the production rhythm of tapping and steelmaking; the overall failure rate of the device is low and it is easy to maintain, with good adaptability to the open air, and has a broad prospect of popularization.

[0039] As a specific implementation manner of the present invention, such as Figure 7 and Figure 8As shown in the figure, the lifting mechanism is a double-acting cylinder 11. There are two independent cavities inside the double-acting cylinder 11. Two piston rods, one upward and one downward, are respectively arranged in the two cavities. The bottom end of the lower piston rod 112 is hinged to the bottom of the guiding frame 6, and the top end of the upper piston rod 111 is hinged to the bottom of the counterweight trolley 5. The cylinder housing 113 is slidably connected to the guiding frame 6. The upper piston rod 111 and the lower piston rod 112 respectively divide the corresponding cavity into a rod chamber and a rodless chamber. Two air holes are respectively opened in the two cavities from the inside to the outside. One air hole is located on the side of the rod chamber, and the other air hole is located on the side of the rodless chamber. The air holes of the upper cavity and the lower cavity of the double-acting cylinder 11 are respectively connected to the air source cabinet through pipelines. For example, the upper cavity is connected to the reversing valve of the air source cabinet through a PU pipeline. The lower cavity is connected to the air source of the air source cabinet through a PU pipeline after being connected in parallel by a check valve pipeline and a manual valve bypass. During the process of opening the cover, the lower cavity of the double-acting cylinder 11 expands due to the intake of air into the rodless chamber, and the rod chamber of the lower cavity contracts due to the exhaust of air. The cylinder housing 113 moves upward along the guiding frame 6 under the action of air pressure, thereby driving the upper piston rod 111 to drive the counterweight trolley 5 to rise. The two cranks 3 and the two fork levers 4 on both sides deflect to the vertical direction under the action of gravity. When the transport vehicle moves to the position where the block contacts the lower end of the right fork lever 4, under the pulling force of the counterweight trolley 5 on the towing rope 2, the right fork lever 4 forms a block on the block to realize the opening of the cover. The transport vehicle continues to move forward, and the right fork lever 4 continues to rotate upward following the torpedo ladle car. The counterweight trolley 5 rises synchronously. The upper piston rod 111 is lifted passively. The rodless chamber of the upper cavity expands due to the intake of air, and the rod chamber of the upper cavity contracts due to the exhaust of air. After the right fork lever 4 passes over the block, it returns to its original position under its own weight. The counterweight trolley 5 descends synchronously with the upper piston rod 111. Since the rodless chamber of the upper cavity is filled with gas, under the buffering action of the gas, the counterweight trolley 5 slowly descends with the upper piston rod 111. The double-acting cylinder 11 is selected as the lifting mechanism, which can realize the function of quickly lifting and slowly lowering the counterweight trolley 5 during the process of opening and closing the cover. It can quickly rise to adapt to the walking speed of the train, and the slow descent can play the role of a buffer spring to better protect the function of the cylinder. It should be noted that the piston strokes of the two piston rods need to be adapted to the stroke of the fork lever 4, and the pressure resistance of the cylinder needs to ensure the pressure generated by the impact when the counterweight trolley 5 falls. In addition, the lifting mechanism adopts a pneumatic method, which is simpler to maintain and has better adaptability to the open air.

[0040] The counterweight trolley 5 is made by welding thick steel plates. Its upper cover is fixed to the side plate with eight bolts. A lifting lug is welded on the upper cover and connected to the towing rope 2. The towing rope 2 can be selected as a steel wire rope. Eight guiding wheels are arranged on both sides of the box body. The guiding wheels adopt ball bearings with dust covers.

[0041] As Figure 4As shown, the guiding frame 6 is a square frame welded by steel such as channel steel. The inner part of the guiding frame 6 forms the slide rail of the counterweight trolley by welding angle steel. Preferably, one side of the guiding frame 6 is made in a detachable form and connected by bolts for convenient maintenance. The lower part of the inner side of the guiding frame 6 is formed with a guiding groove 15 made of steel for defining the direction of the cylinder housing 113 and matching the height of the cylinder housing 113. Further, the cylinder housing 113 is equipped with an anti-torsion shaft, which cooperates with the guiding groove 15 to prevent the cylinder housing 113 from twisting. Buffer blocks 16 are arranged on both sides of the top end of the guiding groove 15 for blocking the counterweight trolley 5 when reaching the lower limit position of the cylinder to avoid damaging the cylinder.

[0042] During actual implementation, an electrical system supporting operation box also needs to be configured for operating the air intake action of the double-acting cylinder 11. The operation box is equipped with proximity switch indicators and audible and visual alarms for the retracted position and the working position.

[0043] As Figure 5 and Figure 6 As shown, the two fixed pulleys 7 are installed on the fixed pulley bracket 12. A fixing pin 13 for preventing the rope from coming out of the groove is installed outside the rope groove of the fixed pulley 7 on the fixed pulley bracket 12. The fixing pin 13 is fixed by bolts 10 connected at both ends through a screw rod. Preferably, a sleeve 17 is sleeved outside the screw rod to prevent the traction rope 2 from rubbing against the screw rod. A cover plate is arranged at the top end of the fixed pulley bracket 12 for protecting the fixed pulley assembly.

[0044] Overhanging frames 14 are respectively fixed on both sides of the support frame 1 along the traveling direction of the transport vehicle. The bearing seats 8 are correspondingly installed on the overhanging frames 14. During actual use, in order to enhance the structural stability of the overhanging frame 14, a reinforcing rod is connected between the overhanging frame 14 and the support frame 1 to form a triangular stable structure.

[0045] The crank 3 and the fork 4 are made of square tubes. The fork 4 includes a fork handle part 41 and a fork part 42. The fork handle part 41 is rod-shaped. The top end of the fork handle part 41 is fixedly connected to the rotating shaft 9. The bottom end of the fork handle part 41 is connected to the fork part 42. The fork part 42 is in a U-shaped shape perpendicular to the traveling direction of the transport vehicle, and the open end of the fork part 42 faces downward.

[0046] An emergency cover lifting and removing driving device for a torpedo ladle molten iron transport vehicle according to an embodiment of the present invention. During specific installation, the steel structure and platform can be modified by taking advantage of the production operation gap. After installing components such as the crank 3, bearing seat 8, and rotating shaft 9 on the upper side, first confirm the lower elevation and make sure it aligns with the center position of the cover of the torpedo ladle molten iron transport vehicle. Install the counterweight trolley 5 and double-acting double-acting cylinder 11 on the lower side. The lifting center needs to be centered with the installation position of the towing rope 2. Supply air source and power supply, and debug the lifting action of the upper piston rod 111. Install the fixed pulley assembly, connect the towing rope 2 with the crank 3 and the double-acting double-acting cylinder 11, and debug according to the traveling condition of the torpedo ladle molten iron transport vehicle.

[0047] An emergency cover lifting and removing driving method for a torpedo ladle molten iron transport vehicle according to an embodiment of the present invention includes the following usage modes:

[0048] Mode 1: When the cover lifting and removing device of the torpedo ladle molten iron transport vehicle is working normally, air enters the air holes of the upper and lower rod chambers of the double-acting double-acting cylinder 11 into the cylinder. The upper piston rod 111 and the lower piston rod 112 both reach the retracted state, driving the counterweight trolley 5 to land at the lowest position. At this time, the towing rope 2 pulls the cranks 3 on both sides to deflect in the opposite direction, and the lower end of the fork 4 leaves the block in the vertical direction.

[0049] Mode 2: When a fault occurs during the cover removing operation of the transport vehicle, when the transport vehicle travels to the right until the block crosses the fork 4 on the left side, the rodless chamber of the lower cavity of the double-acting double-acting cylinder 11 intakes air and expands, and the rod chamber of the lower cavity discharges air and shrinks. The cylinder housing 113 moves upward along the guiding frame 6 under the action of air pressure, thereby driving the upper piston rod 111 to drive the counterweight trolley 5 to move upward. The cranks 3 and the fork 4 on both sides deflect to the vertical direction under the action of gravity. When the transport vehicle travels until the block contacts the lower end of the fork 4 on the right side, under the pulling force of the counterweight trolley 5 on the towing rope 2, the fork 4 on the right side forms a block on the block to achieve opening the cover. The transport vehicle continues to move forward, and the fork 4 on the right side continues to rotate up with the torpedo ladle vehicle. The counterweight trolley 5 rises synchronously with the upper piston rod 111. The rodless chamber of the upper cavity intakes air and expands, and the rod chamber of the upper cavity discharges air and shrinks. After the fork 4 on the right side passes over the block, it returns to its original position under its own weight. The counterweight trolley 5 slowly descends synchronously with the upper piston rod 111 to reset. Control the rod chamber of the lower cavity to intake air and expand, and the rodless chamber of the lower cavity to discharge air and shrink, so that the lower piston rod 112 reaches the retracted state to reset.

[0050] Method 3: When a malfunction occurs in the operation of covering the transport vehicle, when the transport vehicle moves leftward until the shifting block passes over the right fork 4, the rodless cavity of the lower chamber of the double-acting cylinder 11 intakes air and expands, and the rod chamber of the lower chamber discharges air and shrinks. Under the action of air pressure, the cylinder housing 113 moves upward along the guiding frame 6, thereby driving the upper piston rod 111 to drive the counterweight trolley 5 to move upward. The two side cranks 3 and the forks 4 deflect to the vertical direction under the action of gravity. When the transport vehicle moves until the shifting block contacts the lower end of the left fork 4, under the pulling force of the counterweight trolley 5 on the towing rope 2, the left fork 4 forms a block on the shifting block to achieve covering; when the transport vehicle continues to move, the left fork 4 continues to rotate upward following the torpedo ladle car, and the counterweight trolley 5 rises synchronously with the upper piston rod 111. The rodless cavity of the upper chamber intakes air and expands, and the rod chamber of the upper chamber discharges air and shrinks; after the left fork 4 passes over the shifting block, it returns to its original position under its own weight, and the counterweight trolley 5 slowly descends synchronously with the upper piston rod 111 to reset; control the rod chamber of the lower chamber to intake air and expand, and the rodless cavity of the lower chamber to discharge air and shrink, so that the lower piston rod 112 reaches the retracted state and resets.

[0051] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An emergency cover-opening drive device for a torpedo tank molten iron transport vehicle, characterized in that: The invention comprises a support frame (1), a fixed pulley assembly, a traction rope (2), a crank (3), a shift fork (4), a counterweight trolley (5), a guide frame (6) and a lifting mechanism, wherein the support frame (1) is fixed to the ground, the fixed pulley assembly is fixedly mounted on the support frame (1), the fixed pulley assembly comprises two fixed pulleys (7) arranged side by side, one end of the traction rope (2) is arranged vertically downward between the two fixed pulleys (7) and is connected to the top of the counterweight trolley (5); the middle part of the traction rope (2) is divided into two strands and extends to both sides along the two fixed pulleys (7) to form side ends; bearing seats (8) are respectively mounted on both sides of the support frame (1) along the travel direction of the transport vehicle, and the bearing seats (8) on each side are arranged perpendicular to the travel direction of the transport vehicle. Two rotating shafts (9) are respectively arranged between the bearing seats (8) on both sides; one end of the rotating shaft (9) deviating from the fixed pulley assembly is connected to one end of the crank (3), and the other end of the crank (3) is connected to the side end of the traction rope (2) on the corresponding side; a shift fork (4) is fixedly connected to the upper edge of the rotating shaft (9) in a direction parallel to the crank (3), and the lower end of the shift fork (4) is used to shift a shift block on the telescopic tank cover mechanism; a guide frame (6) is fixedly arranged on the lower side of the fixed pulley assembly, one side of the counterweight trolley (5) is slidably connected to the guide frame (6), and the counterweight trolley (5) can slide vertically along the guide frame (6); the bottom end of the counterweight trolley (5) is connected to the action end of the lifting mechanism, and the lifting mechanism is used to drive the counterweight trolley to perform a lifting action.

2. The emergency cover-opening driving device for a torpedo tank molten iron transport vehicle according to claim 1 is characterized in that: The lifting mechanism is a bidirectional double-acting cylinder (11), which has two cavities inside. Two piston rods pointing upward and downward are respectively arranged in the two cavities. The bottom end of the lower piston rod (112) is hinged to the bottom of the guide frame (6), and the top end of the upper piston rod (111) is hinged to the bottom of the counterweight trolley (5); the cylinder housing (113) is slidably connected to the guide frame (6); the upper and lower parts of the bidirectional double-acting cylinder (11) are respectively connected to the air source cabinet through pipelines.

3. The emergency cover-opening driving device for a torpedo tank molten iron transport vehicle according to claim 2 is characterized in that: The two fixed pulleys (7) are mounted on a fixed pulley bracket (12), and a fixing pin (13) for preventing the groove from falling off is mounted on the fixed pulley bracket (12) outside the rope groove of the fixed pulley (7).

4. The emergency cover-opening driving device for a torpedo tank molten iron transport vehicle according to claim 3 is characterized in that: The support frame (1) is respectively fixed with cantilever frames (14) on both sides along the travel direction of the transport vehicle, and the bearing seat (8) is correspondingly mounted on the cantilever frames (14).

5. The emergency cover-opening driving device for a torpedo tank molten iron transport vehicle according to claim 4 is characterized in that: The guide frame (6) is a square frame welded from steel, and the interior of the guide frame (6) forms the slide rail of the counterweight trolley by welding angle steel; the inner lower part of the guide frame (6) is formed with a guide groove (15) made of steel for limiting the direction of the cylinder housing (113) and matching the height of the cylinder housing (113).

6. The emergency cover-opening driving device for a torpedo tank molten iron transport vehicle according to claim 5 is characterized in that: The top end of the guide groove (15) is located on both sides of the cylinder housing (113) and is provided with buffer blocks (16) for blocking the counterweight trolley (5) when the cylinder reaches the lower limit position.

7. The emergency cover-opening driving device for a torpedo tank molten iron transport vehicle according to claim 6 is characterized in that: The shift fork (4) includes a shift handle part (41) and a fork part (42). The shift handle part (41) is rod-shaped. The top end of the shift handle part (41) is fixedly connected to the rotating shaft (9). The bottom end of the shift handle part (41) is connected to the fork part (42). The fork part (42) is in a C shape perpendicular to the traveling direction of the transport vehicle, and the open end of the fork part (42) faces downward.

8. The emergency cover-opening driving device for a torpedo tank molten iron transport vehicle according to claim 7 is characterized in that: A cover plate is provided at the top end of the fixed pulley bracket (12) for protecting the fixed pulley assembly.

9. A method for driving an emergency cover for a torpedo tank molten iron transport vehicle, characterized in that: It is realized by the emergency cover lifting and removing driving device for the torpedo ladle molten iron transport vehicle according to any one of claims 1-8, and it includes the following usage methods: Method 1: When the cover lifting and removing device of the torpedo ladle molten iron transport vehicle works normally, the lifting mechanism drives the counterweight trolley (5) to land at the lowest position. At this time, the traction rope (2) pulls the two side cranks (3) to deflect in the opposite direction, and the lower end of the shift fork (4) leaves the shift block in the vertical direction. Method 2: When a fault occurs in the cover removing operation of the transport vehicle, when the transport vehicle travels to the right until the shift block passes over the left shift fork (4), the lifting mechanism drives the counterweight trolley (5) to move upward. The two side cranks (3) and the shift fork (4) deflect to the vertical direction under the action of gravity. When the transport vehicle travels until the shift block contacts the lower end of the right shift fork (4), under the action of the pulling force of the counterweight trolley (5) on the traction rope (2), the right shift fork (4) forms a block on the shift block to realize opening the cover; when the transport vehicle continues to move, the right shift fork (4) continues to rotate up following the torpedo ladle car, the counterweight trolley (5) rises synchronously with the lifting mechanism. After the right shift fork (4) passes over the shift block, it returns to its original position under its own weight, and the counterweight trolley (5) descends synchronously with the lifting mechanism. Method 3: When a fault occurs in the cover closing operation of the transport vehicle, when the transport vehicle travels to the left until the shift block passes over the right shift fork (4), the lifting mechanism drives the counterweight trolley (5) to move upward. The two side cranks (3) and the shift fork (4) deflect to the vertical direction under the action of gravity. When the transport vehicle travels until the shift block contacts the lower end of the left shift fork (4), under the action of the pulling force of the counterweight trolley (5) on the traction rope (2), the left shift fork (4) forms a block on the shift block to realize closing the cover; when the transport vehicle continues to move, the left shift fork (4) continues to rotate up following the torpedo ladle car, the counterweight trolley (5) rises synchronously with the lifting mechanism. After the left shift fork (4) passes over the shift block, it returns to its original position under its own weight, and the counterweight trolley (5) descends synchronously with the lifting mechanism.

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