Emergency covering and uncovering driving device and method for torpedo ladle molten iron transport vehicle

Abstract

The invention relates to the field of metal casting, in particular to an emergency covering and uncovering driving device and method for a torpedo ladle molten iron transport vehicle. The device comprises a supporting frame, a fixed pulley assembly, a traction rope, a crank, a shifting fork, a balance weight trolley, a guide frame and a lifting mechanism; one end of the traction rope is arranged between the two fixed pulleys and is connected with the counterweight trolley; the middle part of the traction rope is divided into two strands which respectively extend towards two sides along the two fixed pulleys to form side ends, bearing seats are respectively mounted on two sides of the supporting frame, and the two rotating shafts are respectively arranged between the bearing seats on two sides in a penetrating manner; one end of the rotating shaft is connected with one end of the crank, the other end of the crank is connected with the side end of the traction rope, and a shifting fork is fixedly connected to the rotating shaft and used for shifting a shifting block on the telescopic tank cover mechanism; the counterweight trolley can vertically slide along the guide frame; the lifting mechanism is used for driving the counterweight trolley to lift; according to the invention, each vehicle does not need to be independently configured, and emergency covering and uncovering operations do not need to be stopped.

Description

Technical Field

[0001] The invention relates to the field of metal casting, in particular to an emergency cover-adding and uncovering driving device and method for a torpedo tank molten iron transport vehicle. Background Art

[0002] In order to keep the molten iron warm and prevent smoke from coming out of the tank mouth during transportation, the steel mill's torpedo tank molten iron transport vehicle uses a cover device. The specific process is: the iron mill fills the torpedo tank molten iron transport vehicle with molten iron - the iron mill closes the insulation cover of the torpedo tank molten iron transport vehicle (without stopping) - the train transports the torpedo tank molten iron transport vehicle to the steel mill - the steel mill opens the insulation cover of the torpedo tank molten iron transport vehicle (without stopping) - the steel mill pours out the molten iron from the torpedo tank - the steel mill closes the insulation cover of the torpedo tank molten iron transport vehicle (without stopping) - the train transports the torpedo tank molten iron transport vehicle to the iron mill - the iron mill opens the insulation cover of the torpedo tank molten iron transport vehicle (without stopping) - the iron mill fills the torpedo tank molten iron transport vehicle with molten iron again, completing a process.

[0003] The torpedo tank molten iron transport vehicle uses a spring-type gear-shifting device for adding and removing the cover, as disclosed in the invention patent with application number 202210748571.8 and patent name "A ground fixed-point gear-shifting torpedo tank adding and removing cover device and its use method". The insulation cover is opened and closed during the transportation of the molten iron tank car, which is highly efficient and meets the high-tempo production of the steel plant. However, the device still has many faults, is difficult to maintain, and the success rate is difficult to guarantee 100% (the success rate of opening the cover once is calculated to be 99.5%). Therefore, the patent discloses that a spare can be configured. The invention discloses a standby cover-adding device, and the standby cover-adding device is a vehicle-mounted electric device, and each vehicle needs to be equipped with a set of the standby cover-adding device separately. Since the power source is electrically driven, before entering the iron-making blast furnace or steel-making workshop, the torpedo tank car needs to be parked first, and then the external power supply is connected to the socket of the device for power supply, and then the standby cover-adding device can be operated for emergency. The whole operation process requires parking and secondary operation, which greatly increases the process time, is not conducive to the fast-paced iron-making production mode of the blast furnace, and causes the torpedo tank car to be untimely in turnover and transportation, affecting the production rhythm of iron-making and steel-making. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention proposes an emergency cover-opening drive device and method for a torpedo tank molten iron transport vehicle, which is set at fixed points along the existing spring-type gear-shifting machine device, and does not need to be configured separately for each vehicle. The emergency cover-opening operation does not require parking, does not affect the production rhythm of iron tapping and steelmaking, and has a low failure rate 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: On one hand, the present invention provides an emergency cover-lifting driving device for a torpedo tank molten iron transport vehicle, comprising a support frame, a fixed pulley assembly, a traction rope, a crank, a shift fork, a counterweight trolley, a guide frame and a lifting mechanism, wherein the support frame is fixed to the ground, the fixed pulley assembly is fixedly mounted on the support frame, the fixed pulley assembly comprises two fixed pulleys arranged side by side, one end of the traction rope is vertically downwardly arranged between the two fixed pulleys and connected to the top of 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, and the support frame is respectively provided with bearing seats on both sides along the travel direction of the transport vehicle, and the bearing seats on each side are arranged along the Two rotating shafts are arranged perpendicular to the traveling direction of the transport vehicle, and the two rotating shafts are respectively passed through the bearing seats on both sides; one end of the rotating shaft deviates to the fixed pulley assembly and 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, and a shift fork is fixedly connected to the upper edge of the rotating shaft in a direction parallel to the crank, and the lower end of the shift fork is used to shift the shift block on the telescopic tank cover mechanism; a guide frame is fixedly arranged on the lower side of the fixed pulley assembly, and one side of the counterweight trolley is slidably connected to the guide frame, and the counterweight trolley can slide vertically along the guide 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 and lowering actions.

[0006] In one technical solution, the lifting mechanism is a bidirectional double-acting cylinder, which has two cavities inside. Two piston rods pointing upward and downward are respectively provided in the two cavities. The bottom end of the lower piston rod is hinged to the bottom of the guide 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 guide frame; the upper and lower parts of the bidirectional double-acting cylinder are respectively connected to the air source cabinet through pipelines.

[0007] In a technical solution, the two fixed pulleys are mounted on a fixed pulley bracket, and a fixing pin for preventing the rope from falling out of the groove is installed on the fixed pulley bracket outside the rope groove of the fixed pulley.

[0008] In a technical solution, cantilever frames are fixed to both sides of the support frame along the traveling direction of the transport vehicle, and the bearing seats are correspondingly mounted on the cantilever frames.

[0009] In one technical solution, the guide frame is a square frame welded with steel, and the slide rail of the counterweight trolley is formed inside the guide frame by welding angle steel; the inner lower part of the guide frame is formed with steel to form a guide groove for limiting the direction of the cylinder shell and matching the height of the cylinder shell.

[0010] In one technical solution, buffer blocks are provided on both sides of the cylinder housing at the top end of the guide groove to block the counterweight trolley when the counterweight trolley reaches the lower limit position of the cylinder.

[0011] In a 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.

[0012] In a technical solution, a cover plate is provided at the top end of the fixed pulley bracket for protecting the fixed pulley assembly.

[0013] 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: 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 cranks to deflect in opposite directions, and the lower end of the shift fork leaves the shift block in the vertical direction; Mode 2: When a malfunction occurs in the cover opening operation of the transport vehicle, when the transport vehicle travels to the right until the shift block passes over the left shift fork, the lifting mechanism drives the counterweight trolley to move upward. The two 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 action of the pulling force of the counterweight trolley on the traction rope, the right shift fork forms a block on the shift block to realize 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. 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; Mode 3: When a malfunction 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, the lifting mechanism drives the counterweight trolley to move upward. The two 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 action of the pulling force of the counterweight trolley on the traction rope, the left shift fork forms a block on the shift block to realize 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. 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.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The emergency cover-opening driving device for the molten iron transport vehicle of the present invention adopts a lifting mechanism to drive the counterweight trolley to perform lifting and lowering actions. The counterweight trolley and the crank connected at both ends of the traction rope are respectively arranged on both sides of the fixed pulley. The pulling force between the traction rope and the counterweight trolley is transmitted to between the traction rope and the crank through the fixed pulley. Since the two side ends of the wire rope are connected to the two cranks, when the molten iron transport vehicle with a torpedo tank passes through the shift fork in the right and left directions, the shift fork gives the shift block a shifting force accordingly to open or close the cover; the shifting force of the shift fork on the shift block can be adjusted by adjusting the counterweight of the counterweight trolley.

[0015] The present invention is set at fixed points along the existing spring-type gear shifting machine device, and does not need to be separately configured for each vehicle, thereby reducing the configuration cost of the emergency cover-opening device; the emergency cover-opening operation is driven by the horizontal force generated by the shift fork on the shift block, and the success rate of opening and closing the cover is higher; and there is no need to stop the vehicle during the cover-opening operation, which does not affect the production rhythm of iron tapping and steelmaking; the overall failure rate of the device is low and it is easy to maintain, with good outdoor adaptability, and has broad promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the emergency cover-opening driving device of the torpedo tank molten iron transport vehicle of the present invention during the cover-opening process; Figure 2 It is a schematic structural diagram of the emergency cover-opening driving device of the torpedo tank molten iron transport vehicle of the present invention; Figure 3 It is a schematic diagram of the connection position structure of the crank and the shift fork; Figure 4 It is a schematic diagram of the connection structure of the bidirectional double-acting cylinder in the guide frame; Figure 5 This is a schematic diagram of the fixed pulley installation structure; Figure 6 for Figure 5 A right view structural diagram of ; Figure 7 It is a schematic diagram of the structure of a bidirectional double-acting cylinder; Figure 8 It is a schematic diagram of the longitudinal cross-sectional structure of a bidirectional double-acting cylinder.

[0018] Figure numerals: 1-support frame; 2-traction rope; 3-crank; 4-fork; 41-handle part; 42-fork part; 5-counterweight trolley; 6-guide frame; 7-fixed pulley; 8-bearing seat; 9-rotating shaft; 10-bolt; 11-bidirectional double-acting cylinder; 111-upper piston rod; 112-lower piston rod; 113-cylinder housing; 12-fixed pulley bracket; 13-fixing pin; 14-cantilever frame; 15-guide groove; 16-buffer block; 17-sleeve. DETAILED DESCRIPTION

[0019] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0020] Based on the problem that the success rate of the existing torpedo tank cover removal device is difficult to guarantee 100%, such as Figure 1 and Figure 2 As shown, an embodiment of the present invention proposes an emergency cover-opening drive device for a torpedo tank molten iron transport vehicle, comprising 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. The support frame 1 is fixed to the ground to provide support for the fixed pulley assembly and the bearing seat 8. The support frame 1 is in a door shape, and 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, and one end of the traction rope 2 is vertically downwardly arranged between the two fixed pulleys 7 and 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 as side ends, and the support frame 1 is respectively installed with bearing seats 8 on both sides along the travel direction of the transport vehicle, and the bearing seats 8 on each side are arranged in two directions perpendicular to the travel direction of the transport vehicle, such as Figure 3 As shown, two rotating shafts 9 are respectively passed through the bearing seats 8 on both sides; one end of the rotating shaft 9 biased toward 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 traction rope 2 on the corresponding side, and a shift fork 4 is fixedly connected to the upper side 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 the shift block on the telescopic tank cover mechanism; a guide frame 6 is fixedly set on the lower side of the fixed pulley assembly, and 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 lifting and lowering actions.

[0021] The existing torpedo tank cover adopts a spring-type tooth-pulling device, and the tank cover is connected to the transport vehicle frame through a telescopic mechanism to form a telescopic tank cover mechanism, such as Figure 1It is shown that the tank cover of the embodiment of the present invention is suspended and connected to the telescopic mechanism on the left side thereof, and a shifting block is connected to the telescopic mechanism. By shifting the shifting block horizontally, the shifting block can be telescopically moved together with the telescopic mechanism to drive the tank cover to open or close. The emergency lid-lifting driving device for the molten iron transport vehicle of the present invention adopts a lifting mechanism to drive the counterweight trolley 5 to perform lifting and lowering movements. The counterweight trolley 5 and the crank 3 connected at both ends of the traction rope 2 are respectively arranged on both sides of the fixed pulley 7. The pulling force between the traction rope 2 and the counterweight trolley 5 is transmitted to between the traction rope 2 and the crank 3 through the fixed pulley 7. Since the two side ends of the wire rope 2 are connected to the two cranks 3, when the molten iron transport vehicle of the torpedo tank passes through the shifting fork 4 in the right and left directions, the shifting fork 4 gives the shifting block a shifting force accordingly to open or close the cover; the shifting force of the shifting fork 4 on the shifting block can be adjusted by adjusting the counterweight of the counterweight trolley 5.

[0022] It should be understood that the movement of the torpedo tank molten iron transport vehicle to the right or left in the present invention is determined based on the connection direction of the telescopic mechanism, wherein "right" and "left" are not limitations on the direction. In actual implementation, the coordination setting or adjustment should be carried out according to the purpose of the present invention.

[0023] Specifically, when the torpedo tank molten iron transport vehicle cover-lifting device works normally, the lifting mechanism drives the counterweight trolley 5 to land at the lowest position, at which time the traction rope 2 pulls the cranks 3 on both sides to deflect in opposite directions, and the lower end of the fork 4 leaves the shift block in the vertical direction; When the transport vehicle fails to open the cover, when the transport vehicle moves to the right until the shift block passes over the left fork 4, the lifting mechanism drives the counterweight trolley 5 to move upward, and the cranks 3 and forks 4 on both sides are deflected to the vertical direction under the action of gravity. When the transport vehicle moves until the shift block contacts the lower end of the right fork 4, under the pulling force of the counterweight trolley 5 on the traction rope 2, the right fork 4 blocks the shift block to open the cover; the transport vehicle continues to move, and the right fork 4 continues to rotate along with the torpedo tank car, and the counterweight trolley 5 rises synchronously with the lifting mechanism, and returns to its original position under the action of its own weight after the right fork 4 passes over the top of the shift block, and the counterweight trolley 5 descends synchronously with the lifting mechanism; When the cover adding action of the transport vehicle fails, when the transport vehicle moves to the left until the shift block passes over the fork 4 on the right, the lifting mechanism drives the counterweight trolley 5 to move upward, and the cranks 3 and forks 4 on both sides are deflected to the vertical direction under the action of gravity. When the transport vehicle moves until the shift block contacts the lower end of the fork 4 on the left, under the pulling force of the counterweight trolley 5 on the traction rope 2, the fork 4 on the left blocks the shift block and closes the cover; the transport vehicle continues to move, and the fork 4 on the left continues to rotate along with the torpedo tanker, and the counterweight trolley 5 rises synchronously with the lifting mechanism, and returns to its original position under the action of its own weight after the fork 4 on the left passes over the shift block, and the counterweight trolley 5 descends synchronously with the lifting mechanism.

[0024] The present invention is set at fixed points along the existing spring-type gear shifting machine device, and does not need to be separately configured for each vehicle, thereby reducing the configuration cost of the emergency cover-opening device; the emergency cover-opening operation is driven by the horizontal force generated by the four pairs of shifting blocks of the shift fork, and the success rate of opening and closing the cover is higher; and there is no need to stop the vehicle during the cover-opening operation, which does not affect the production rhythm of iron tapping and steelmaking; the overall failure rate of the device is low and it is easy to maintain, with good outdoor adaptability, and has broad promotion prospects.

[0025] As a specific embodiment of the present invention, Figure 7 and Figure 8As shown, the lifting mechanism is a bidirectional double-acting cylinder 11, and two independent cavities are arranged inside the bidirectional double-acting cylinder 11, and two piston rods are arranged upward and downward in the two cavities respectively. 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 piston rod 111 and the lower piston rod 112 respectively divide the corresponding cavity into a rod cavity and a rodless cavity, and the two cavities are opened from the inside to the outside. Two air holes, one of which is located on the side of the rod cavity, and the other is located on the side of the rodless cavity; the air holes of the upper cavity and the lower cavity of the two-way double-acting cylinder 11 are respectively connected to the air source cabinet through pipelines, such as 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 pipe after a one-way valve pipeline and a manual valve bypass are connected in parallel; in the process of opening the cover, the rodless cavity of the lower cavity of the two-way double-acting cylinder 11 is expanded by air intake, and the rod cavity of the lower cavity is reduced by air discharge, and the cylinder shell 113 is in Under the action of air pressure, it moves upward along the guide frame 6, thereby driving the upper piston rod 111 to drive the counterweight trolley 5 to move upward, and the cranks 3 and the forks 4 on both sides are deflected to the vertical direction under the action of gravity. When the transport vehicle moves to the point where the shift block contacts the lower end of the fork 4 on the right, under the pulling force of the counterweight trolley 5 on the traction rope 2, the fork 4 on the right blocks the shift block to open the cover; the transport vehicle continues to move, and the fork 4 on the right continues to rotate with the torpedo tanker, and the counterweight trolley 5 rises synchronously, the upper piston rod 111 is passively raised, and the rodless body of the upper cavity is The cavity expands due to air intake, and the rod cavity of the upper cavity shrinks due to air exhaust; the right fork 4 returns to its position under the action of its own weight after passing over the top of the shift block, and the counterweight trolley 5 drops synchronously with the upper piston rod 111. Since the rodless cavity of the upper cavity is filled with gas, the counterweight trolley 5 slowly drops with the upper piston rod 111 under the buffering effect of the gas; the lifting mechanism uses a two-way double-acting cylinder 11, which can realize the function of driving the counterweight trolley 5 to rise quickly and fall slowly during the cover-uncovering action. It can rise quickly to adapt to the speed of the train, and the slow fall can act as a buffer spring. To better protect the function of the cylinder; it should be noted that the piston stroke of the two piston rods must be compatible with the stroke of the fork 4, and the cylinder pressure resistance must ensure the pressure generated by the impact when the counterweight trolley 5 falls. In addition, the lifting mechanism adopts pneumatic mode, which is simpler to maintain and has better adaptability to outdoor use.

[0026] The counterweight trolley 5 is made of thick steel plate welding, and its upper cover is fixed to the side plate with eight bolts, and the upper cover is welded with a lifting lug, which is connected to the traction rope 2. The traction rope 2 can be a steel wire rope. Eight guide wheels are arranged on both sides of the box body, and the guide wheels adopt ball bearings with dust covers.

[0027] like 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 into a detachable form and connected by bolts for convenient maintenance. A guiding groove 15 for defining the direction of the cylinder housing 113 and matching the height of the cylinder housing 113 is formed by steel on the lower part of the inner side of the guiding frame 6. 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 and located at the cylinder housing 113 to block the counterweight trolley 5 when reaching the lower limit position of the cylinder to avoid damaging the cylinder.

[0028] During actual implementation, an operation box supporting the electrical system also needs to be configured for operating the air intake action of the double-acting cylinder 11 in both directions. Proximity switch indicators and audible and visual alarms for the retracted position and the working position are provided on the operation box.

[0029] 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 provided at the top end of the fixed pulley bracket 12 for protecting the fixed pulley assembly.

[0030] 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 frames 14, a reinforcing rod is connected between the overhanging frames 14 and the support frame 1 to form a triangular stable structure.

[0031] 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 C shape perpendicular to the traveling direction of the transport vehicle, and the open end of the fork part 42 faces downward.

[0032] An emergency cover-opening drive device for a torpedo tank molten iron transport vehicle according to an embodiment of the present invention can be used to transform the steel structure and the platform during the installation during the production operation interval; after the upper crank 3, bearing seat 8, rotating shaft 9 and other components are installed, the lower elevation is first confirmed, and the center position of the tank cover of the torpedo tank molten iron transport vehicle is confirmed; the counterweight trolley 5 and the two-way double-acting cylinder 11 on the lower side are installed, the lifting center needs to be aligned with the installation position of the traction rope 2, the air source power supply is equipped, and the lifting action of the upper piston rod 111 is debugged; the fixed pulley assembly is installed, the traction rope 2 is connected to the crank 3 and the two-way double-acting cylinder 11, and the debugging is carried out in accordance with the travel situation of the torpedo tank molten iron transport vehicle.

[0033] An emergency cover-opening driving method for a torpedo tank molten iron transport vehicle according to an embodiment of the present invention includes the following usage: Mode 1: When the torpedo tank molten iron transport vehicle cover-lifting device works normally, the air holes of the upper and lower rod chambers of the two-way double-acting cylinder 11 both take air into the cylinder, and 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 traction rope 2 pulls the cranks 3 on both sides to deflect in opposite directions, and the lower end of the fork 4 leaves the shift block in the vertical direction; Method 2: When the cover-lifting action of the transport vehicle fails, when the transport vehicle moves to the right until the shift block passes over the left fork 4, the rodless chamber of the lower chamber of the two-way double-acting cylinder 11 is expanded by intake of air, and the rod chamber of the lower chamber is reduced by exhaust of air. The cylinder housing 113 moves upward along the guide 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 are deflected to the vertical direction under the action of gravity. When the transport vehicle moves to the point where the shift block contacts the lower end of the fork 4 on the right, under the pulling force of the counterweight trolley 5 on the traction rope 2, The right shift fork 4 blocks the shift block to open the cover; the transport vehicle continues to move, the right shift fork 4 continues to rotate along with the torpedo tanker, the counterweight trolley 5 rises synchronously with the upper piston rod 111, the rodless chamber of the upper chamber expands due to air intake, and the rod chamber of the upper chamber shrinks due to air exhaust; after the right shift fork 4 passes over the shift block, it returns to its original position under the action of its own weight, and the counterweight trolley 5 slowly descends synchronously with the upper piston rod 111 to reset; the rod chamber of the lower chamber is controlled to intake air and expand, and the rodless chamber of the lower chamber shrinks due to air exhaust, so that the lower piston rod 112 reaches the retracted state and resets; Method 3: When the transport vehicle fails to cover, when the transport vehicle moves to the left until the shift block passes over the right fork 4, the rodless chamber of the lower chamber of the two-way double-acting cylinder 11 is expanded by intake of air, and the rod chamber of the lower chamber is reduced by exhaust of air. The cylinder housing 113 moves upward along the guide 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 are deflected to the vertical direction under the action of gravity. When the transport vehicle moves to the point where the shift block contacts the lower end of the left fork 4, under the pulling force of the counterweight trolley 5 on the traction rope 2, the left The shift fork 4 on the side forms a block against the shift block to achieve closing the cover; the transport vehicle continues to move, the left fork 4 continues to rotate along with the torpedo tank car, the counterweight trolley 5 rises synchronously with the upper piston rod 111, the rodless chamber of the upper cavity is expanded by air intake, and the rod chamber of the upper cavity is reduced by air exhaust; after the left fork 4 passes over the shift block, it returns to its original position under the action of its own weight, and the counterweight trolley 5 slowly descends synchronously with the upper piston rod 111 to reset; the rod chamber of the lower cavity is controlled to intake air and expand, and the rodless chamber of the lower cavity is reduced by air exhaust, so that the lower piston rod 112 reaches the retracted state and resets.

[0034] The above is only a 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 a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on 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 portion (41) and a fork portion (42). The shift handle portion (41) is rod-shaped. The top end of the shift handle portion (41) is fixedly connected to the rotating shaft (9). The bottom end of the shift handle portion (41) is connected to the fork portion (42). The fork portion (42) is in a C shape perpendicular to the traveling direction of the transport vehicle, and the open end of the fork portion (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 uncovering driving device for the torpedo ladle hot metal transport vehicle according to any one of claims 1-8, and it includes the following usage methods: Method 1: When the cover lifting and uncovering device of the torpedo ladle hot metal transport vehicle is working 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 sides of the crank (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 failure occurs in the cover uncovering action of the transport vehicle, when the transport vehicle travels to the right until the shift block crosses the left shift fork (4), the lifting mechanism drives the counterweight trolley (5) to move upward. The two sides of the crank (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 pulling force of the counterweight trolley (5) on the traction rope (2), the right shift fork (4) blocks the shift block to realize cover uncovering; 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, and 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 failure occurs in the cover closing action of the transport vehicle, when the transport vehicle travels to the left until the shift block crosses the right shift fork (4), the lifting mechanism drives the counterweight trolley (5) to move upward. The two sides of the crank (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 pulling force of the counterweight trolley (5) on the traction rope (2), the left shift fork (4) blocks the shift block to realize cover closing; 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, and 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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