CN112025609A - Converter tangential key installation method and converter tangential key auxiliary installation equipment - Google Patents
Converter tangential key installation method and converter tangential key auxiliary installation equipment Download PDFInfo
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- CN112025609A CN112025609A CN202010837343.9A CN202010837343A CN112025609A CN 112025609 A CN112025609 A CN 112025609A CN 202010837343 A CN202010837343 A CN 202010837343A CN 112025609 A CN112025609 A CN 112025609A
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- key
- tangential
- heat
- tangential key
- telescopic device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/50—Tilting mechanisms for converters
Abstract
The invention relates to a converter tangential key installation method and converter tangential key auxiliary installation equipment, which comprise a base, wherein a heat-insulating barrel and a fixing frame are arranged on the base, the fixing frame is rotationally connected with a horizontal lifting arm and a pushing frame from top to bottom, and the lower end of the lifting arm is connected with a lifting device; the pushing frame is provided with a horizontal telescopic device, a vertical telescopic device and a tangential key guiding device; the horizontal telescopic device is connected with the tangential key guiding device, the horizontal telescopic device provides driving force in the horizontal direction for one end of the tangential key guiding device, the lower end of the vertical telescopic device is detachably connected with a barrel cover of the heat-insulating barrel, and the vertical telescopic device provides stroke driving force in the vertical direction for the barrel cover of the heat-insulating barrel. The auxiliary installation equipment for the tangential key of the converter provided by the invention can finish cold installation of the tangential key under the condition of no touch of people, has a simple structure, is convenient to operate, and can ensure the safety of operators.
Description
Technical Field
The invention relates to the technical field of converter equipment, in particular to a converter tangential key installation method and converter tangential key auxiliary installation equipment.
Background
The tilting mechanism is a driving device for ensuring molten iron charging and tapping of the converter, and the tilting mechanism is connected with a trunnion of the backing ring by a tangential key and is in interference fit with the trunnion. Generally, the tilting mechanism is driven in a suspension mode, four primary gears drive an internal secondary gear to rotate, the gear and a trunnion ring trunnion are connected in a tangential key mode, and the installation quality of the tangential key directly influences the transmission efficiency of the tilting mechanism and the trunnion ring. After the converter body, the backing ring and the tilting mechanism of the converter system are installed in place, the key procedure is the installation of the tangential key, and because the tangential key adopts interference fit, the volume is large, the weight is heavy, the installation difficulty is higher, and manual operation is generally adopted. The resistance between the tangential key and the key groove in the installation process can be reduced by adopting a manner of pre-freezing the tangential key, but the temperature of liquid nitrogen is extremely low, usually-196 ℃, during manual contact, frostbite is extremely easy, higher potential safety hazards exist, the manual adjustment interference magnitude speed is low, the interference magnitude can not be accurately adjusted, the interference magnitude is extremely easy to be lower than or exceed a designed interference value, the tangential key cannot be adjusted in place after the temperature rises, and meanwhile, the tangential key is difficult to detach and readjust, so that a trunnion or a speed reducer gear is damaged.
Disclosure of Invention
The invention aims to provide a converter tangential key installation method and corresponding converter tangential key auxiliary installation equipment, which can improve the installation efficiency, strictly control the interference fit precision value, reduce manual contact in the installation process and ensure the safety and accuracy of the installation process.
The scheme adopted by the invention for solving the technical problems is as follows:
a converter tangential key auxiliary mounting device comprises a base, wherein a heat-insulating barrel and a fixing frame are arranged on the base, the fixing frame is rotatably connected with a horizontal lifting arm and a pushing frame from top to bottom, and the lower end of the lifting arm is connected with a lifting device; the pushing frame is provided with a horizontal telescopic device, a vertical telescopic device and a tangential key guiding device; the horizontal telescopic device is connected with the tangential key guiding device, the horizontal telescopic device provides driving force in the horizontal direction for one end of the tangential key guiding device, the lower end of the vertical telescopic device is detachably connected with a barrel cover of the heat-insulating barrel, and the vertical telescopic device provides stroke driving force in the vertical direction for the barrel cover of the heat-insulating barrel.
Preferably, one end of the lifting arm is rotatably connected with the fixing frame through a rotating head, and one end of the pushing frame is rotatably connected with the fixing frame in a lifting mode through a lifting rotating head.
Preferably, still be connected with universal fixture on the top pushing frame, universal fixture includes connecting rod and clamping head, connect through universal actuating shaft between connecting rod and the clamping head.
Preferably, the tangential key guiding device comprises a front bracket and a rear pushing frame, the rear pushing frame is connected with the pushing frame in a sliding manner, and has a stroke moving back and forth along the pushing frame under the action of the horizontal telescopic device; the front bracket is in a U-shaped groove structure matched with the bottom of the tangential key.
Preferably, the bottom of base is provided with the universal wheel, the universal wheel takes the band-type brake.
Preferably, the bottom of the heat-preserving container is detachably fixed on the base, and the position of the heat-preserving container is located in the middle of the base.
Preferably, the lifting device comprises a drum, a drum driving motor, a wire rope and a tangential key fixing device; the drum is fixed on the lifting arm, the drum driving motor provides a rolling driving force for the drum, the steel wire rope is wound on the drum and forms a stroke in the vertical direction through the rope guide, the free end of the steel wire rope is fixedly connected with the tangential key fixing device, and the tangential key fixing device is a lifting hook or an electromagnetic chuck.
Preferably, the horizontal telescopic device comprises a horizontal screw and a screw driving motor, the screw driving motor provides a rotary driving force to the screw, so that the screw has a telescopic stroke in the horizontal direction, and the front end of the screw is connected with the tangential key guiding device through a bearing.
The invention also aims to provide a converter tangential key installation method, which adopts the auxiliary installation equipment and comprises the following steps:
(1) connecting the heat-insulating barrel cover with a vertical telescopic device, opening the heat-insulating barrel cover by using the vertical telescopic device and a pushing frame, transferring the heat-insulating barrel cover to one side of a heat-insulating barrel, placing a tangential key in the heat-insulating barrel, filling liquid nitrogen into the heat-insulating barrel, covering the heat-insulating barrel cover on the heat-insulating barrel by using the vertical telescopic device and the pushing frame again, and freezing the tangential key; conveying the auxiliary mounting equipment to a converter driving mechanism mounting position;
(2) opening the heat-insulating barrel cover, taking out the tangential key lower key in the heat-insulating barrel by using the lifting device, and closing the heat-insulating barrel cover;
(3) the lower key of the tangential key is placed into the tangential key guiding mechanism by mechanical or manual assistance;
(4) adjusting a jacking frame, jacking the lower key of the tangential key to the key slot mounting position, and adjusting a horizontal telescopic device to enable the lower key of the tangential key to enter the key slot;
(5) repeating the steps (2) to (4), taking out the upper key of the tangential key, placing the upper key of the tangential key on the lower key of the tangential key, and accurately adjusting the positions of the upper key and the lower key according to the interference magnitude required by the design drawing;
(6) and when the tangential key is balanced with the ambient temperature, the installation is finished.
The invention provides auxiliary installation equipment for a converter tangential key, which is used for researching the use method of the auxiliary installation equipment, can well assist the filling, storage and transportation of liquid nitrogen and the taking-out operation of the frozen tangential key, and greatly improves the safety, the high efficiency and the accuracy of the installation result of the process.
Drawings
FIG. 1 is a schematic structural diagram of an auxiliary installation device for a tangential key of a converter according to the present invention;
FIG. 2 is a schematic view of the use state of the auxiliary installation equipment for the tangent key of the converter.
Wherein the drawings are numbered:
1, universal wheels; 2, a base; 3, inner shell of heat preservation barrel; 4, a shell of the heat preservation barrel; 5, insulating cotton; 6, a sealing gasket; 7, a barrel cover; 8, a vertical screw; 9, vertically driving a motor; 10, a gas release valve; 11, pushing the frame; 12, a front bracket; 13, a rear pushing frame; 14, a horizontal screw; 15, horizontally driving a motor; 16, a clamping mechanism; 17, a connecting rod; 18, an electromagnetic chuck; 19, a steel wire rope; 20, a cable; 21, a rope guider; 22, a roller; 23, a drum driving motor; 24, a lift arm; 25, rotating the head; 26, lifting the rotary head; 27, a fixing frame; 28, a mobile power supply; 31, auxiliary installation equipment for a converter tangential key; 32, a tangential key; 33, a tilting device; 34, a converter trunnion ring trunnion.
Detailed Description
The following examples are provided to further illustrate the present invention for better understanding, but the present invention is not limited to the following examples.
Example 1
The auxiliary equipment structure adopted by the embodiment is as follows:
the utility model provides a converter tangential key auxiliary erection equipment, includes base 2, the bottom of base 2 is provided with universal wheel 1, universal wheel 1 takes the band-type brake. The heat-preserving container of area lid has been placed at the middle part of base 2, the heat-preserving container adopts double-deck barrel, including heat-preserving container inner shell 3 and heat-preserving container shell 4, it has thermal insulation cotton 5 to fill between heat-preserving container inner shell 3 and the heat-preserving container shell 4, the upper portion of heat-preserving container is provided with bung 7, be provided with disappointing valve 10 on the bung 7, the lower part is provided with sealed 6 of filling. The bottom of heat-preserving container and the upper surface of base 2 are provided with assorted slot and bolt respectively, make the heat-preserving container can detachably fix on base 2. The edge part of base 2 is provided with vertically mount 27, the top of mount 27 is connected with lifting arm 24, rotary head 25 is passed through to lifting arm 24's one end with mount 27 swivelling joint, other end level extension, hoisting device is installed to lifting arm 24's lower extreme, hoisting device is including being fixed in cylinder 22 on the lifting arm 24 with be used for to cylinder 22 provides the cylinder driving motor 23 of roll drive power, it has wire rope 19 to coil on the cylinder 22, wire rope 19's free end is connected with electromagnet 18 to form the stroke of vertical direction through rope guide 21, electromagnet 18 is connected with power supply through cable 20.
The middle part of the fixing frame 27 is connected with a pushing frame 11, one end of the pushing frame 11 is connected with the fixing frame 27 in a lifting and rotating way through a lifting rotating head 26, and the other end extends horizontally. A universal clamping mechanism is further fixed at one end of the pushing frame 11 close to the lifting rotating head 26, and consists of a connecting rod 17 and a clamping mechanism 16, the universal clamping mechanism is connected through a universal shaft and can rotate in a clamping area, and when the electromagnetic chuck 18 adsorbs the tangential key 32 stably, the tangential key 32 is clamped and rotationally adjusted to the guiding device; the pushing frame 11 is a toothed groove steel, the lower end of the toothed groove steel is fixedly connected with a vertical telescopic device, the vertical telescopic device comprises a vertical screw 8 and a vertical driving motor 9, and the vertical driving motor 9 provides a rotary driving force for the vertical screw 8 so that the vertical screw 8 has a telescopic stroke in the vertical direction. The free end part of the vertical screw rod 8 is connected with a buckle, and the middle part of the barrel cover 7 of the heat-preserving barrel is provided with a clamping groove matched with the buckle. The upper portion of the toothed channel steel is fixedly connected with a horizontal screw rod 14 and a horizontal driving motor 15, the horizontal driving motor 15 provides a rotary driving force for the horizontal screw rod 14, so that the horizontal screw rod 14 has a telescopic stroke in the horizontal direction, and the free end of the horizontal screw rod 14 is connected with the tangential key device through a bearing. The tangential key device comprises a front bracket 12 and a rear pushing frame 13, the bottom of the rear pushing frame 13 is connected with the toothed channel steel in a sliding mode, the top of the rear pushing frame 13 is of a U-shaped groove structure with an opening at one end, and the tangential key device has a stroke moving back and forth along the pushing frame 11 under the action of the horizontal telescopic device and can provide an outward pushing force for the tangential key 32; the bottom of the front bracket 12 is fixedly connected with the toothed channel steel, the top of the front bracket is of a U-shaped groove structure with two open ends, and the U-shaped groove structures of the front bracket 12 and the rear push frame 13 are matched with the bottom of the tangential key 32 or are slightly larger than the bottom of the tangential key 32 in size.
Be provided with control panel on the mount 27, still be provided with portable power source 28 on the base 2, rotating head 25, lift rotating head 26, electromagnetic chuck 18, cylinder driving motor 23, vertical drive motor 9, horizontal drive motor 15, universal fixture 16 all connect portable power source 28, and control switch all gather in on the control panel.
The tangential key 32 installation is performed using the above-described auxiliary device, the steps are as follows:
(1) before the converter trunnion ring and the tilting device 33 are assembled, checking the key groove, checking the upper working surface and the lower working surface of the key groove by using a flat ruler, and checking the flatness of the working surfaces by using a coloring method; measuring the length and width dimensions of the opening of the key slot and the depth dimension of the slot;
(2) grinding the key group, combining the inclined planes of the upper key and the lower key of the key group together, and checking the flatness of a working surface by adopting a coloring method to ensure that the joint surfaces of the upper key and the lower key and the upper contact surface and the lower contact surface of the key group, a trunnion of a tilting mechanism and a gear of a speed reducer are in good contact;
(3) determining the assembly interference magnitude of the upper key group and the lower key group according to the construction drawing, determining the combined relative position size of the key groups by using the measured key slot size, and recording;
(4) cleaning the key groove and the upper and lower tangential key 32 groups;
(5) opening a mobile power supply 28 on a base 2 of a converter tangential key auxiliary installation device 31, adjusting a lifting rotating head 26 to enable a vertical screw 8 to be located right above a barrel cover 7, starting a vertical driving motor 9 to enable a buckle at the front end of the vertical screw 8 to be clamped with a clamping groove in the top of the barrel cover 7, driving the vertical screw 8 to lift the barrel cover 7, then rotating the lifting rotating head 26 to enable the barrel cover 7 to be transferred to the rear side of the heat preservation barrel, and placing a key group in an inner shell 3 of the heat preservation barrel;
(6) rotating the lifting rotating head 26 to place the barrel cover 7 over the heat-insulating barrel, starting the vertical driving motor 9, lowering the barrel cover 7 through the vertical screw 8, tightly covering under the action of the sealing gasket 6 to prevent dust from entering, and closing the mobile power supply 28;
(7) conveying the converter tangential key auxiliary installation equipment 31 to an oxygen generation station, lifting the barrel cover 7 according to the step (5), filling a proper amount of liquid nitrogen into the inner shell 3 of the heat-preservation barrel, and tightly covering the barrel cover 7 according to the step (6) to avoid volatilization or overflow of the liquid nitrogen;
(8) stably conveying the auxiliary installation equipment 31 for the tangential keys of the converter to a construction site, pushing the auxiliary installation equipment to the vicinity of a tilting device, and closing a band-type brake of the universal wheel 1 to lock the position of the auxiliary installation equipment 31 for the tangential keys of the converter;
(9) lifting the barrel cover 7 according to the step (5), and rotating to the rear side of the heat-preservation barrel;
(10) starting a roller driving motor 23 to drive a roller 22 to rotate, enabling a steel wire rope 19 to descend through a rope guider 21, enabling an electromagnetic chuck 18 to suck a lower key of a tangential key 32 and lift the steel wire rope to a safe height after the lower key is stabilized;
(11) tightly covering the barrel cover 7 according to the step (6), loosening a buckle and a clamping groove for connecting the vertical screw 8 and the barrel cover 7, and starting the vertical driving motor 9 to rotatably lift the vertical screw 8 to a safe height;
(11) running the roller driving motor 23, loosening the electromagnetic chuck 18 through the universal clamping mechanism 16 and manual assistance, placing the tangential key 32 in the tangential key device, adjusting the height and direction of the lifting rotating head 26, enabling the lower surface of the tangential key 32 to be flush with the lower surface of the key slot and aligning the center line, starting the horizontal driving motor 15, enabling the horizontal screw 14 to rotate and push the rear pushing frame 13 and the tangential key 32 to move towards the key slot, placing the tangential key 32 to the installation position, and accurately adjusting and fixing the installation position of the lower key of the tangential key 32 according to the recorded positioning positions of the lower key of the tangential key 32 and the key slot;
(11) starting a horizontal driving motor 15 to retreat the tangential key device to an initial position;
(12) repeating the steps (8) to (11); taking out the upper key of the tangential key 32, placing the upper key into the key groove on the lower key of the tangential key 32, and accurately positioning to ensure the interference magnitude required by the design drawing;
(13) and when the temperature of the tangential key 32 is balanced with the ambient temperature, the installation is finished, the auxiliary installation equipment 31 for the tangential key of the converter is moved out of the construction site, and liquid nitrogen is discharged for processing.
According to the invention, the upper and lower tangential keys 32 are accurately installed to the recording position through electric and manual adjustment, the interference magnitude is ensured, the installation precision is ensured, concentrated stress is not formed on the gear of the tilting mechanism 33 and the trunnion 34 of the trunnion ring of the converter due to too large interference magnitude, and the instability and final damage to equipment in the operation process of the tilting mechanism 33 and the trunnion ring are not caused due to too small interference magnitude. In the installation process, power is provided through the portable power source 28, and manual fine adjustment is locally used in a mode of adjusting the screw rod driven by the motor, so that the links and time of manual participation are reduced, and the danger of frostbite of operators is effectively avoided. By adopting the method, the installation and the positioning of the tangential key 32 can be efficiently and safely finished, the device has simple structure, can be repeatedly utilized in the installation of a steel converter system, and has strong universality.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (9)
1. The auxiliary installation equipment for the tangential keys of the converter is characterized by comprising a base, wherein a heat-insulating barrel and a fixing frame are arranged on the base, the fixing frame is rotatably connected with a horizontal lifting arm and a pushing frame from top to bottom, and the lower end of the lifting arm is connected with a lifting device; the pushing frame is provided with a horizontal telescopic device, a vertical telescopic device and a tangential key guiding device; the horizontal telescopic device is connected with the tangential key guiding device, the horizontal telescopic device provides driving force in the horizontal direction for one end of the tangential key guiding device, the lower end of the vertical telescopic device is detachably connected with a barrel cover of the heat-insulating barrel, and the vertical telescopic device provides stroke driving force in the vertical direction for the barrel cover of the heat-insulating barrel.
2. The apparatus of claim 1, wherein one end of the lifting arm is rotatably connected to the fixing frame by a rotating head, and one end of the pushing frame is rotatably connected to the fixing frame by a lifting rotating head.
3. The apparatus of claim 1, wherein the pushing frame is further connected with a universal clamping mechanism, the universal clamping mechanism comprises a connecting rod and a clamping head, and the connecting rod and the clamping head are connected through a universal driving shaft.
4. The apparatus as claimed in claim 1, wherein the tangential key guiding device comprises a front bracket and a rear pushing frame, the rear pushing frame is slidably connected with the pushing frame and has a stroke moving back and forth along the pushing frame under the action of the horizontal telescopic device; the front bracket is in a U-shaped groove structure matched with the bottom of the tangential key.
5. The apparatus according to claim 1, wherein the bottom of the base is provided with universal wheels with band-type brakes.
6. The apparatus of claim 1, wherein the bottom of the thermal bucket is removably secured to the base, and the thermal bucket is positioned in a middle portion of the base.
7. The apparatus of claim 1, wherein the lifting device comprises a drum, a drum drive motor, a wire rope, and a tangential key fixture; the drum is fixed on the lifting arm, the drum driving motor provides a rolling driving force for the drum, the steel wire rope is wound on the drum and forms a stroke in the vertical direction through the rope guide, the free end of the steel wire rope is fixedly connected with the tangential key fixing device, and the tangential key fixing device is a lifting hook or an electromagnetic chuck.
8. The apparatus of claim 1, wherein the horizontal expansion device comprises a horizontal screw and a screw driving motor, the screw driving motor provides a rotational driving force to the screw to make the screw have an expansion stroke in a horizontal direction, and a front end of the screw is connected to the tangential key guiding device through a bearing.
9. A converter tangential key installation method is characterized in that the auxiliary installation equipment of any one of claims 1-8 is adopted, and the method comprises the following steps:
(1) connecting the heat-insulating barrel cover with a vertical telescopic device, opening the heat-insulating barrel cover by using the vertical telescopic device and a pushing frame, transferring the heat-insulating barrel cover to one side of a heat-insulating barrel, placing a tangential key in the heat-insulating barrel, filling liquid nitrogen into the heat-insulating barrel, covering the heat-insulating barrel cover on the heat-insulating barrel by using the vertical telescopic device and the pushing frame again, and freezing the tangential key; conveying the auxiliary mounting equipment to a converter driving mechanism mounting position;
(2) opening the heat-insulating barrel cover, taking out the tangential key lower key in the heat-insulating barrel by using the lifting device, and closing the heat-insulating barrel cover;
(3) the lower key of the tangential key is placed into the tangential key guiding mechanism by mechanical or manual assistance;
(4) adjusting a jacking frame, jacking the lower key of the tangential key to the key slot mounting position, and adjusting a horizontal telescopic device to enable the lower key of the tangential key to enter the key slot;
(5) repeating the steps (2) to (4), taking out the upper key of the tangential key, placing the upper key of the tangential key on the lower key of the tangential key, and accurately adjusting the positions of the upper key and the lower key according to the interference magnitude required by the design drawing;
(6) and when the tangential key is balanced with the ambient temperature, the installation is finished.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010837343.9A CN112025609B (en) | 2020-08-19 | 2020-08-19 | Converter tangential key installation method and converter tangential key auxiliary installation equipment |
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|---|---|---|---|
| CN202010837343.9A CN112025609B (en) | 2020-08-19 | 2020-08-19 | Converter tangential key installation method and converter tangential key auxiliary installation equipment |
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| CN112025609A true CN112025609A (en) | 2020-12-04 |
| CN112025609B CN112025609B (en) | 2022-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756965A (en) * | 2020-12-30 | 2021-05-07 | 上海二十冶建设有限公司 | Split mounting method for tilting speed reducer of converter |
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| CN110744487A (en) * | 2019-10-09 | 2020-02-04 | 国网山东省电力公司昌乐县供电公司 | Multifunctional mounting platform for combined electrical appliance |
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| FR2587825A1 (en) * | 1985-09-24 | 1987-03-27 | Fives Cail Babcock | DEVICE FOR MEASURING TEMPERATURE AND / OR SAMPLING SAMPLE FROM A LIQUID STEEL BATH |
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