CN108085633B - Multi-station continuous processing production line for steel pipe after hot dip galvanizing - Google Patents
Multi-station continuous processing production line for steel pipe after hot dip galvanizing Download PDFInfo
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- CN108085633B CN108085633B CN201810038285.6A CN201810038285A CN108085633B CN 108085633 B CN108085633 B CN 108085633B CN 201810038285 A CN201810038285 A CN 201810038285A CN 108085633 B CN108085633 B CN 108085633B
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- hot dip
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000005246 galvanizing Methods 0.000 title description 6
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 90
- 239000008397 galvanized steel Substances 0.000 claims abstract description 90
- 230000000750 progressive effect Effects 0.000 claims abstract description 78
- 238000001816 cooling Methods 0.000 claims abstract description 44
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000011701 zinc Substances 0.000 claims abstract description 39
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 39
- 238000007664 blowing Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000001174 ascending effect Effects 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims description 30
- 230000007246 mechanism Effects 0.000 claims description 29
- 239000000498 cooling water Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 230000007306 turnover Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 230000001427 coherent effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/185—Tubes; Wires
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/38—Wires; Tubes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Thermal Sciences (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention belongs to the technical field of steel pipe galvanization processing, and particularly relates to a multi-station continuous processing production line after steel pipe hot dip galvanization. The main technical scheme is as follows: the zinc-plated steel pipe continuous conveying device mainly comprises an ascending track connected with a zinc pot, a progressive conveying device connected with the ascending track, a descending track arranged at the tail end of the ascending track, and a water cooling device connected with the descending track, wherein the ascending track is provided with a steel pipe outer surface blowing and wiping station, the water cooling device is internally provided with a water cooling continuous conveying station, the progressive conveying device comprises a rack, a receiving station arranged on a transverse supporting arm of the rack, a steel pipe inner surface blowing and wiping station and an air cooling station, a progressive lifting supporting plate which is close to the two transverse supporting arms and is provided with synchronous movement, and the upper part of the progressive lifting supporting plate is provided with a plurality of grooves for longitudinally lifting the zinc-plated steel pipe and used for transversely progressively conveying the zinc-plated steel pipe between the adjacent stations. The multi-station continuous processing production line has the characteristics of reasonable structural design, tight and coherent processing links and capability of double-thread treatment of the hot-dip galvanized steel pipe.
Description
Technical Field
The invention belongs to the technical field of steel pipe galvanization processing, and particularly relates to a multi-station continuous processing production line after steel pipe hot dip galvanization.
Background
The process for producing galvanized steel pipe includes degreasing steel pipe, rinsing with water, pickling to remove rust, rinsing with water, processing with plating aid solvent, stoving, hot dipping zinc, blowing outwards, wiping residual zinc with internal blowing, cooling, passivating, drying, inspecting and packaging. The series of processing processes need to continuously convey the steel pipe among the stations, in particular to the process links of external blowing, internal blowing and cooling after the pre-treated steel pipe is hot-dip galvanized, the processing processes need to be tightly and continuously connected, and the processing time is severely required.
At present, most of processing treatment after hot dip galvanizing of the steel pipe is linear treatment, and the production progress is prolonged; the integration level of each process link is low, the processing time of a single station is long, the hot dip galvanized steel pipe cannot be processed in the design period, and defective products are easy to generate; moreover, each station needs to be monitored manually, the positions of the steel pipes are corrected at any time, labor resources are consumed, and the production cost of enterprises is increased.
Disclosure of Invention
The invention aims to provide a multi-station continuous processing production line which has reasonable structural design and compact and coherent processing links and can be used for double-thread treatment of hot-dip galvanized steel pipes.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a multistation continuous processing production line after hot dip zinc of steel pipe, mainly by the hot dip zinc steel pipe that supplies longitudinal movement who is connected with the zinc pot breaks away from the ascending track of zinc pot, with ascending track connection's progressive conveyor, set up in the terminal descending track of progressive conveyor, with descending track connection's water cooling plant constitutes its characterized in that: the up-track is provided with a hot-dip galvanized steel pipe outer surface blowing and wiping station, a water cooling continuous conveying station is arranged in the water cooling device, the progressive conveying device comprises a frame, a material receiving station for longitudinally placing the galvanized steel pipe, a hot-dip galvanized steel pipe inner surface blowing and wiping station and an air cooling station are arranged on transverse supporting arms at two opposite ends of the frame, synchronous moving progressive lifting supporting plates are arranged close to the two transverse supporting arms, and a plurality of grooves for longitudinally lifting the galvanized steel pipe are formed in the upper parts of the progressive lifting supporting plates and used for transversely progressively conveying the galvanized steel pipe between the adjacent stations.
The center distance between adjacent grooves on the progressive lifting supporting plate is equal to the center distance of the stations, a plurality of transmission stand legs are arranged at the lower part of the progressive lifting supporting plate, each transmission stand leg is provided with a transmission unit which is independent, each transmission unit comprises a traction rotating rod which is rotationally connected with the tail end of each transmission stand leg, the axle center of each traction rotating rod is fixed with a driving rotating shaft, and each driving rotating shaft is connected with a common power mechanism through a speed reducer;
the two progressive conveying devices are arranged at the tail end of the ascending track and symmetrically arranged along the left side and the right side of the longitudinal movement line of the galvanized steel pipe, the material receiving stations are positioned at the left side and the right side of the inner sides of the transverse supporting arms, and the material receiving stations of the progressive conveying devices at the left side and the right side are staggered and overlapped.
The PLC comprises a first sensor positioned at the tail end of the receiving station and a second sensor positioned at the entering end of the receiving station, wherein the first sensor is used for sending a signal that a longitudinally moving galvanized steel pipe completely reaches the receiving station of the transverse supporting arm to the PLC, and the PLC sequentially and alternately sends starting commands to motors of the progressive conveying devices positioned at the left side and the right side of the longitudinal moving conveying line of the galvanized steel pipe; the second sensor is used for sending a signal for returning the progressive lifting supporting plate to the initial position to the PLC, and the PLC sends a starting command to the uplink track to enable the galvanized steel pipe moving longitudinally to enter the material receiving station of the transverse supporting arm again.
The additional technical characteristics of the multi-station continuous processing production line after the steel pipe hot dip galvanizing comprise:
the number of transmission stand feet of the progressive lifting supporting plate is 2, the traction rotating rods which are connected with the transmission stand feet in a rotating mode are vertically arranged, driving rotating shafts which are fixedly connected with the axes of the traction rotating rods are horizontally arranged on two sides of the power mechanism, the power mechanism is an electric motor, and the electric motor is connected with the speed reducer through a coupler or a transmission belt.
The axis part of the traction rotating rod is provided with an extension rod, the tail end of the extension rod is provided with a counterweight, and the counterweight is symmetrically arranged along the central line of the traction rotating rod.
The ascending track mainly comprises a magnetic roller frame and a power roller frame, wherein the magnetic roller frame is used for adsorbing the hot dip galvanized steel pipe to enable the hot dip galvanized steel pipe to incline upwards, the power roller frame is arranged at the tail end of the magnetic roller frame and is parallel to the magnetic roller frame, the conveying surface of the magnetic roller frame is downward, the conveying surface of the power roller frame is upward, and the transverse and longitudinal sections of the roller shafts in the power roller frame are V-shaped.
-the ratio of the magnetic force of the magnetic roller shaft of the magnetic roller frame to the diameter of the hot dip galvanized steel pipe is 20 kgf/1 mm.
-the hot dip zinc steel pipe surface of going up the track blows and smears the station for setting up the annular gas blowing pipe at magnetic force roller frame middle part, set up the gas blowing hole on the inboard pipe shaft of annular gas blowing pipe, the upper portion of annular gas blowing pipe sets up the intake pipe of being connected with compressed air source.
The inner surface blowing station of the hot-dip galvanized steel pipe comprises an inclined support which is arranged on the transverse supporting arm in a longitudinal direction, pneumatic clamping hands which are arranged at two ends of the inclined support are used for clamping the hot-dip galvanized steel pipe, a hollow push rod which is provided with a corresponding inclination angle and is controlled by a control mechanism and can push and pull in the hot-dip galvanized steel pipe is arranged at the side part of the inclined support, the other end part of the hollow push rod is communicated with a compressed air source, an inner spray head is arranged at the end part of the hollow push rod which is pushed and pulled in the hot-dip galvanized steel pipe, and at least one circle of air spray holes which form an acute angle with the axis of the hot-dip galvanized steel pipe are arranged at the side part or the end part of the inner spray head.
-the descending track includes the support body, set up in the V type bracket that can empty of support body upper end, V type bracket with the air cooling station distance of progressive conveyor's transverse support arm equals adjacent station's distance on the transverse support arm, the one end of V type bracket is connected with the piston rod of lifting cylinder, the other end of V type bracket with the longitudinal arm one end of support body articulates, V type bracket middle part sets up tilting mechanism, is used for guaranteeing V type bracket emptys and erects.
The V-shaped bracket comprises a supporting rod which is longitudinally arranged, the V-shaped bracket is arranged on the supporting rod, the V-shaped bracket is hinged with one end of the longitudinal arm through a supporting plate which is longitudinally arranged, a pipe sleeve which is longitudinally arranged is arranged on the supporting plate, one end of the supporting rod penetrates through the pipe sleeve to reach the hinged position of the supporting plate and the longitudinal arm, the other end of the supporting rod is hinged with a piston rod of the lifting cylinder, the turnover mechanism comprises a guiding short arm which is arranged in the middle of the supporting rod, the guiding short arm is hinged with a lifting limiting mechanism, and when the lifting limiting mechanism is used for ensuring that the supporting plate reaches a lifting limiting point, the lifting cylinder pushes and pulls the supporting rod to enable the supporting rod to rotate in the pipe sleeve, and the V-shaped bracket arranged on the supporting rod can stand and topple over.
The lifting limiting mechanism comprises a guide rod with an upper stop block and a lower stop block, the upper end of the guide rod is hinged with the tail end of the short guide arm, the guide rod moves in a lifting manner in a guide hole formed in the top plate of the frame body, the guide rod moves downwards until the supporting plate is flat, the upper stop block is limited by the guide hole, and the lifting cylinder pulls the supporting rod downwards to rotate in the pipe sleeve so that the V-shaped supporting hand tilts outwards; when the guide rod moves upwards to the inclined supporting plate, the lower stop block is limited by the guide hole, and the lifting cylinder pushes the supporting rod upwards to rotate in the pipe sleeve so that the V-shaped supporting hand is erected again.
The water cooling device comprises a cooling water tank, the water cooling continuous conveying station is arranged in the cooling water tank, the water cooling continuous conveying station comprises a bracket arranged in the cooling water tank, a horizontal power rotating shaft and two groups of rotating arms uniformly arranged on the bracket are arranged on the horizontal power rotating shaft, two parallel arc-shaped supporting rods are arranged in the cooling water tank, one end of each arc-shaped supporting rod is the inlet end of the cooling water tank, the other end of each arc-shaped supporting rod is the outlet end of the cooling water tank, and the rotating arms stir the hot-dip zinc steel tube to slide on the arc-shaped supporting rods.
The number of the group of rotating arms arranged on the horizontal power rotating shaft is multiple, and two longitudinally adjacent rotating arms respectively arranged on the two groups of rotating arms have an included angle of 5-15 degrees, so that the steel pipe can be obliquely born to fall into cooling water.
Compared with the prior art, the multi-station continuous processing production line for the steel pipe after hot dip galvanization has the following advantages: firstly, because the multi-station continuous processing production line mainly comprises an ascending track, which is connected with a zinc pot and used for longitudinally moving a hot-dip galvanized steel pipe, a progressive conveying device, which is connected with the ascending track, a descending track, which is arranged at the tail end of the progressive conveying device, and a water cooling device, which is connected with the descending track, each station is completely and reasonably arranged according to the design of the technological process, the functional components are compact in structure, the links of external blowing, internal blowing, air cooling and water cooling treatment after the hot-dip galvanization of the steel pipe are tightly and continuously connected, and the manufacturing period is obviously shortened; secondly, as the lower part of the progressive lifting supporting plate is provided with a plurality of transmission stand feet, the transmission unit comprises a traction rotating rod which is rotationally connected with the tail end of the transmission stand feet, the axle center of the traction rotating rod is fixed with a driving rotating shaft, and the driving rotating shaft is connected with a common power mechanism through a speed reducer, the progressive transmission of the hot dip zinc steel tube is realized, the hot dip zinc steel tube regularly and effectively moves among a plurality of stations, and the purposes of less occupied labor and high mechanization degree are realized; thirdly, as the two progressive conveying devices are arranged at the tail end of the ascending track and symmetrically arranged along the left side and the right side of the longitudinal movement line of the galvanized steel pipe, the original unidirectional linear processing mode is changed, the left-right transverse movement of the steel pipe is realized, the continuous processing operation after the steel pipe is hot-dip galvanized by double threads is simultaneously carried out, and the production efficiency is obviously improved; fourth, because the progressive conveyor also comprises a PLC controller, the motors of the progressive conveyor on the left side and the right side of the galvanized steel pipe longitudinal movement conveying line alternately send starting commands to the ascending track in turn, so that the longitudinally moving galvanized steel pipe continuously enters the material receiving station, the automation level of equipment is improved, manual operation is omitted, and the requirement of safe production is met.
Drawings
FIG. 1 is a schematic overall layout of a multi-station continuous processing production line after hot dip galvanization of a steel pipe according to the present invention;
FIG. 2 is a schematic diagram of a progressive conveyor forming the multi-station continuous processing line;
FIG. 3 is a schematic view of a progressive lift pallet of the progressive conveyor of FIG. 2;
FIG. 4 is a schematic view of two progressive conveyors of FIG. 2 forming a transverse bi-directional diverting structure;
FIG. 5 is a schematic view of the structure of an upstream track constituting the multi-station continuous processing line;
fig. 6 is a schematic structural view of a hot dip galvanized steel pipe inner surface blowing-coating station constituting the multi-station continuous processing line;
FIG. 7 is a schematic view of a down-track constituting the multi-station continuous processing line;
fig. 8 is a side view of the down track shown in fig. 7 in an inverted state.
Detailed Description
The structure and the working principle of the multi-station continuous processing production line after hot dip galvanization of the steel pipe provided by the invention are further described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a multi-station continuous processing production line after hot dip galvanizing of a steel pipe. The structure of the multi-station continuous processing production line mainly comprises an ascending track 1, a progressive conveying device 2, a descending track 3 and a water cooling device 4, wherein the ascending track 1 is connected with the zinc pot A and used for separating a longitudinally moving hot-dip galvanized steel pipe B from the zinc pot A, the descending track 3 is connected with the ascending track 1, the descending track 3 is arranged at the tail end of the progressive conveying device 2, the water cooling device 4 is connected with the descending track 3, the ascending track 1 is provided with a hot-dip galvanized steel pipe outer surface blowing-coating station 11, the water cooling device 4 is internally provided with a water cooling continuous conveying station 41, the progressive conveying device 2 comprises a rack 21, transverse supporting arms (22 and 22') positioned at the opposite ends of the rack 21 are provided with a receiving station 23, a hot-dip galvanized steel pipe inner surface blowing-coating station 24 and an air cooling station 25, the upper part of the progressive lifting supporting plate 26 is provided with a plurality of grooves 261 for longitudinally lifting the galvanized steel pipe, and the galvanized steel pipe B is transversely and progressively conveyed between the adjacent stations.
The working principle is as follows: after the steel pipe is fully galvanized in the zinc pot A, the steel pipe longitudinally moves through the ascending track 1, passes through the hot dip galvanized steel pipe outer surface blowing and wiping station 11, reaches the receiving station 23 of the progressive conveying device 2, and is transversely progressively conveyed by the synchronous moving progressive lifting supporting plate 26 at the hot dip galvanized steel pipe inner surface blowing and wiping station 24 and the air cooling station 25, and the galvanized steel pipe after being processed enters the water cooling device 4 through the descending track 3, so that the cooling operation is completed.
In the structure of the multi-station continuous processing production line after the steel pipe is hot-dip galvanized,
as shown in fig. 2, the zinc steel pipes B are regularly and orderly conveyed in the adjacent stations, the lower parts of the progressive lifting support plates 26 are provided with a plurality of transmission stand legs 262, each transmission stand leg 262 is provided with a transmission unit which is independent, each transmission unit comprises a traction rotary rod 263 rotationally connected with the tail end of each transmission stand leg 262, the axle center of each traction rotary rod 263 is fixed with a driving rotary shaft 264, each driving rotary shaft 264 is connected with a common power mechanism 28 through a speed reducer 27, even if the progressive lifting support plates 26 rotate in a right, upper, left, lower or left, upper, right and lower mode around the station plane of the transverse support arm (22, 22'), as the center distance of the adjacent grooves 261 on the progressive lifting support plates 26 is equal to the center distance of the stations, the purpose that the galvanized steel pipes are lifted upwards and then conveyed to the adjacent stations in a left or right direction is achieved, and the driving rotary shafts 264 drive the traction rotary rods 263 to rotate circularly, so that the galvanized steel pipes can be connected with the progressive conveying to the adjacent stations;
as shown in fig. 3, the lifting plate performs stable and cyclic rotation around the station plane of the transverse supporting arm (22, 22'), the number of transmission stand legs 262 arranged on the progressive lifting support plate 26 is 2, the traction rotary rods 263 rotatably connected with the transmission stand legs 262 are vertically arranged, the driving rotary shafts 264 fixedly connected with the axes of the traction rotary rods 263 are horizontally arranged at two sides of the power mechanism 28, the power mechanism 28 is a motor, the motor is connected with the speed reducer 27 through a coupling or a driving belt, the traction rotary rods 263 are driven to rotate at a uniform speed through the driving rotary shafts 264 which synchronously move, the transmission stand legs 262 rotatably connected with one end of the traction rotary rods 263 rotate along with the rotation, so that when the progressive lifting support plate rotates and rises, the galvanized steel pipes at the initial station (namely the receiving station 23) are lifted up and down, the purpose of progressively conveying the galvanized steel pipes among stations is achieved, and as the progressive lifting support plate is provided with 2 transmission stand legs 262 at the lower part, the purpose of progressively lifting the galvanized steel pipes is always kept at a horizontal level;
in order to assist the rotation of the driving shaft 264 and reduce the working load thereof, the shaft center portion of the traction rotating rod 263 is provided with an extension rod 265, the end of the extension rod 265 is provided with a counterweight 266, the counterweight 266 is symmetrically arranged along the central line of the traction rotating rod 263, the movement inertia of the traction rotating rod 263 is increased, the working strength of the driving shaft 264 is weakened, the progressive lifting support plate 26 rotates more smoothly, the traction rotating rod 263 rotates more stably, and the progressive lifting support plate 26 is prevented from being invalid due to rotation and inclination;
as a preferred embodiment, the traction rotating rod 263 and the counterweight 266 of the extension rod 265 may be in a T-shaped hammer shape or a pendulum shape, so long as the counterweight 266 is ensured to be symmetrically arranged along the center line of the traction rotating rod 263, and the rotation axis is located at the middle position of the traction rotating rod 263;
as shown in fig. 4, two progressive conveying devices (2 a, 2 b) are arranged at the tail end of the ascending track 1 and symmetrically arranged along the left side and the right side of the longitudinal movement line C of the galvanized steel pipe, the material receiving stations 23 are positioned at the inner sides of the left side and the right side transverse supporting arms (22, 22'), and the material receiving stations 23 of the progressive conveying devices (2 a, 2 b) at the left side and the right side are overlapped in a staggered manner, namely, the split flow of the left and the right bidirectional galvanized steel pipes is realized, the original unidirectional linear processing mode is changed, and the production efficiency is doubled by transverse direction-changing conveying;
the system also comprises a PLC controller, wherein the PLC controller comprises a first sensor 51 positioned at the tail end of the receiving station 23 and a second sensor 52 positioned at the entering end of the receiving station 23, the first sensor 51 is used for sending a signal to the PLC controller that a longitudinally moving galvanized steel pipe completely reaches the receiving station 23 of the transverse supporting arms (22, 22'), and the PLC controller sequentially and alternately sends starting commands to motors of progressive conveying devices (2 a, 2 b) positioned at the left side and the right side of the longitudinal moving conveying line of the galvanized steel pipe; the second sensor 52 is used for sending a signal for returning the progressive lifting support plate 26 to the initial position to the PLC controller, and the PLC controller sends a starting command to the ascending track 1 so that the galvanized steel pipe moving longitudinally enters the receiving station 23 of the transverse support arms (22, 22') again.
The specific working flow is as follows:
step one, the material receiving stations 23 inside the transverse supporting arms (22, 22') of the left-side and right-side multi-station progressive conveying devices (2 a, 2 b) are overlapped in a staggered mode, when the galvanized steel pipe completely reaches the material receiving stations 23, a first sensor 51 positioned at the tail end of the material receiving stations 23 feeds back signals to a PLC controller, and the PLC controller sends starting instructions to the motors of the left-side multi-station progressive conveying device 2 a;
step two, a motor of the left multi-station progressive conveying device 2a drives a speed reducer 27 connected with the motor to match rotating speed and torque with a driving shaft, a traction rotating rod 263 connected with a driving rotating shaft 264 drives a progressive lifting support plate to rotate in a right, upper, left and lower mode around the station plane of the transverse support arms (22, 22 '), namely, when in an initial position, a groove 261 of the progressive lifting support plate coincides with a receiving station 23 of the transverse support arms (22, 22'), the galvanized steel pipe is lifted up by upward movement, the longitudinally placed galvanized steel pipe transversely moves leftwards by leftward movement, the longitudinally placed galvanized steel pipe is placed in an adjacent station of the transverse support arms (22, 22 '), and the rightward movement of the progressive lifting support plate returns to the initial position coinciding with the receiving station 23 of the transverse support arms (22, 22') again;
step three, after receiving the signal fed back by the first sensor 51 that the galvanized steel pipe reaches the receiving station 23 again, the PLC controller sends a starting instruction to the motor of the right multi-station progressive conveying device 2b, the working procedure of the right multi-station progressive conveying device 2b is basically the same as that of the step two, but the steering of the driving rotating shaft 264 is just opposite to that of the left multi-station progressive conveying device 2a, and the traction rotating rod 263 connected with the driving rotating shaft 264 drives the progressive lifting supporting plate 26 to rotate in a left, upper, right and lower mode around the station plane of the transverse supporting arms (22, 22'), so as to finish transverse and rightward movement of the galvanized steel pipe placed longitudinally;
step four, when the progressive lifting supporting plate 26 of the left-side or right-side multi-station progressive conveying device (2 a, 2 b) finishes one-time rotation and returns to the initial position, the second sensor 52 feeds back a signal to the PLC, and the PLC sends an operation instruction to the galvanized steel pipe longitudinal movement conveying line C so that the galvanized steel pipe enters the receiving station 23 of the transverse supporting arms (22, 22') again;
and fifthly, repeating the first to fourth steps, namely transversely and leftwards and rightwards shunting the galvanized steel pipe moving longitudinally, and realizing the purpose of progressive transmission among multiple stations due to the cyclic rotation of the progressive lifting supporting plate 26.
Of course, the order of the second and third steps may be reversed, so long as the PLC controller alternately sends the start command to the motors of the right and left multi-station progressive conveyors (2 b, 2 a);
as shown in fig. 5, the steel tube in the pan a after hot dip zinc is extracted, the ascending track 1 is mainly composed of a magnetic roller frame 101 that adsorbs the hot dip zinc steel tube B to make it incline upwards and a power roller frame 102 that is arranged at the end of the magnetic roller frame 101 and parallel to the magnetic roller frame 101, wherein the transportation surface of the magnetic roller frame 101 faces downwards, the transportation surface of the power roller frame 102 faces upwards, the transverse longitudinal section of a roller shaft 102' in the power roller frame 102 is V-shaped, the hot dip zinc steel tube B is lifted by magnetic force, the danger caused by manual operation is avoided, the labor protection is stronger, the magnetic lifting and the power roller are correspondingly connected to convey the hot dip zinc steel tube B in an inclined way, and the redundant zinc liquid falls into the zinc pan a, so that raw materials are saved;
preferably, the ratio of the magnetic force roller shaft 101 'in the magnetic force roller frame 101 to the diameter of the hot-dip galvanized steel pipe B is 20 kgf/1 mm, so that the hot-dip galvanized steel pipe B can be rapidly and stably sucked out of the zinc pot A, and the magnetic force roller shaft 101' can be adaptively adjusted according to the processing diameter of the hot-dip galvanized steel pipe B to meet different production requirements;
after the steel pipe is obliquely lifted after hot dip galvanizing, the superfluous zinc liquid on the outer surface of the pipe body is timely blown and wiped off, the outer surface blowing and wiping station 11 of the hot dip galvanized steel pipe of the ascending track 1 is an annular blowing pipe 111 arranged in the middle of the magnetic roller frame 101, a blowing hole 112 is arranged on the inner pipe body of the annular blowing pipe 111, an air inlet pipe 113 connected with a compressed air source is arranged on the upper part of the annular blowing pipe 111, and the blowing and wiping work of the outer surface is rapidly completed in the transportation process of the hot dip galvanized steel pipe B through the relative longitudinal movement of the hot dip galvanized steel pipe B and the annular blowing pipe 111, so that the treatment efficiency is high, and the blowing and wiping are uniform and clean;
as shown in fig. 6, in order to remove zinc liquid remained in the hot-dip galvanized steel pipe B or zinc nodules formed by drying, and ensure smooth and flat inner surface of the steel pipe, the inner surface blowing station 24 of the hot-dip galvanized steel pipe includes a longitudinally placed inclined bracket 241 on a transverse supporting arm (22, 22'), pneumatic clamping hands 242 disposed at two ends of the inclined bracket 241, the pneumatic clamping hands 242 are used for clamping the hot-dip galvanized steel pipe B, a hollow push rod 243 capable of pushing and pulling the hot-dip galvanized steel pipe B with one end portion thereof having a corresponding inclination angle controlled by a control mechanism 245 is disposed at the side portion of the inclined bracket 241, the other end portion of the hollow push rod 243 is communicated with a compressed air source, an inner spray head 244 is disposed at the end portion of the hollow push rod 243 pushed and pulled in the hot-dip galvanized steel pipe B, and at least one circle of air injection holes forming an acute angle with the axis of the hot-dip galvanized steel pipe B are disposed at the side portion or end portion of the inner spray head 244, namely, after the hot-dip galvanized steel pipe B is blown and wiped out by the pneumatic clamping hands 242, the hollow push rod 243 having a compressed air source is pushed and pulled into the steel pipe by the control mechanism 245, compressed air of 0.15-0.3 mpa is pushed and pulled along the hollow steel pipe 243 until impurities are completely adhered to the inner surface of the hollow steel pipe and the zinc nodules are completely wiped and completely along the inner surface;
the inner surface blowing and wiping station 24 of the hot dip galvanized steel pipe can also adopt a wiping device for removing residual zinc on the inner surface of the hot dip galvanized steel pipe, which is different from the wiping device in the patent number CN 204022928U, wherein the blowing and wiping gas in the steel pipe adopts high-temperature waste heat gas of 60-350 ℃ for collecting a gas flue on the outer side of an opening A of a zinc pot, the waste heat collection is realized by utilizing the air pressure of the stainless steel pipe and the outlet of a Roots blower, specifically, the stainless steel pipe is made of 316L, and the air pressure of the outlet of the Roots blower is 0.5-0.85 MPa;
as shown in fig. 7, in order to transfer the hot-dip galvanized steel pipe B to the water cooling station 41 at the air cooling station 25, a descending track 3 is provided near the air cooling station 25 of the transverse supporting arms (22, 22 '), the hot-dip galvanized steel pipe B is transferred by means of the progressive lifting supporting plate 26 in a transverse inclined manner, the descending track 3 comprises a frame 411, a V-shaped bracket capable of tilting is provided at the upper end of the frame 411, the distance between the V-shaped bracket and the air cooling station 25 of the transverse supporting arms (22, 22 ') of the progressive conveying device 2 is equal to the distance between adjacent stations on the transverse supporting arms (22, 22 '), one end of the V-shaped bracket is connected with a piston rod of the lifting cylinder 33, the other end of the V-shaped bracket is hinged with one end of the longitudinal arm 34 of the frame 411, and a tilting mechanism 35 is provided in the middle of the V-shaped bracket to ensure that the V-shaped bracket tilts and erects, namely, the tilting of one end of the hot-dip galvanized steel pipe B into cooling water is realized by pushing and pulling the V-shaped bracket by the lifting cylinder 33, and bending the hot-dip galvanized steel pipe B is avoided;
as shown in fig. 8, in order to keep the V-shaped bracket standing upright when receiving the hot dip galvanized steel pipe B, the V-shaped bracket can be tilted to turn over into the water cooling device 4 after descending, the V-shaped bracket comprises a supporting rod 321 arranged longitudinally, V-shaped brackets 322 arranged at two ends of the supporting rod 321, the V-shaped bracket is hinged with one end of a longitudinal arm 34 through a supporting plate 323 arranged longitudinally, a pipe sleeve 324 arranged longitudinally is arranged on the supporting plate 323, one end of the supporting rod 321 penetrates through the pipe sleeve 324 to reach the hinge position of the supporting plate 323 and the longitudinal arm 34, the other end of the supporting rod 321 is hinged with a piston rod of a lifting cylinder 33, the turning mechanism 35 comprises a guiding short arm 351 arranged in the middle of the supporting rod 321, the guiding short arm 351 is hinged with a lifting limiting mechanism 36, and the lifting limiting mechanism 36 is used for ensuring that the lifting cylinder 33 pushes and pulls the supporting rod 321 to rotate in the pipe sleeve 324 when the supporting plate 323 reaches the lifting limiting point, and the V-shaped bracket arranged on the supporting rod 321 can stand upright and tilt;
preferably, the lifting limiting mechanism 36 includes a guide rod 363 having an upper stopper 361 and a lower stopper 362, the upper end of which is hinged to the end of the guide short arm 351, the guide rod 363 moves up and down in a guide hole 37 provided in the top plate of the frame 411, when the guide rod 363 moves down to the level of the pallet 323, the upper stopper 361 is limited by the guide hole 37, and the lifting cylinder 33 pulls the lifting rod 321 downward to rotate in the socket 324 to tilt the V-shaped bracket 322 outwards; when the guide rod 363 moves upward to incline the pallet 323, the lower stopper 362 is limited by the guide hole 37, and the lifting cylinder 33 pushes the support rod 321 upward to rotate in the pipe sleeve 324 so that the V-shaped support hand 322 stands again;
in order to realize continuous movement of the hot-dip galvanized steel pipe B in the water cooling device 4, as shown in fig. 1, the water cooling device 4 includes a cooling water tank 42, a water cooling continuous conveying station 41 is disposed in the cooling water tank 42, the water cooling continuous conveying station 41 includes a bracket 411 disposed in the cooling water tank 42, a horizontal power rotating shaft 412 and two groups of rotating arms 413 uniformly disposed on the horizontal power rotating shaft 412 are disposed on the bracket 411, two parallel arc-shaped supporting rods 414 are disposed in the cooling water tank 42, one end of each arc-shaped supporting rod 414 is an inlet end of the cooling water tank 42, the other end of each arc-shaped supporting rod 414 is an outlet end of the cooling water tank 42, and the rotating arms 413 stir the hot-dip galvanized steel pipe B to slide on the arc-shaped supporting rods 414, i.e. the cooling process of the steel pipe entering and exiting the cooling water tank 42 is completely automated;
as a preferred mode, the number of the group of rotating arms 413 arranged on the horizontal power rotating shaft 412 is plural, and two longitudinally adjacent rotating arms 413 respectively positioned in two groups have an included angle of 5 degrees to 15 degrees, so that the hot dip galvanized steel pipe B can be obliquely born and falls into the cooling water, and bending of the hot dip galvanized steel pipe B caused by cooling is avoided.
Claims (10)
1. The utility model provides a multistation continuous processing production line after hot dip zinc of steel pipe, mainly by the hot dip zinc steel pipe that supplies longitudinal movement who is connected with the zinc pot breaks away from the ascending track of zinc pot, with ascending track connection's progressive conveyor, set up in the terminal descending track of progressive conveyor, with descending track connection's water cooling plant constitutes its characterized in that: the upper track is provided with a hot-dip galvanized steel pipe outer surface blowing and wiping station, the water cooling device is internally provided with a water-cooling continuous conveying station, the progressive conveying device comprises a frame, transverse supporting arms positioned at two opposite ends of the frame are provided with a receiving station for longitudinally placing a galvanized steel pipe, a hot-dip galvanized steel pipe inner surface blowing and wiping station and an air cooling station, a progressive lifting supporting plate which moves synchronously is arranged close to the transverse supporting arms, and the upper part of the progressive lifting supporting plate is provided with a plurality of grooves for longitudinally lifting the galvanized steel pipe and used for transversely progressively conveying the galvanized steel pipe between the adjacent stations;
the center distance between adjacent grooves on the progressive lifting supporting plate is equal to the center distance of the stations, a plurality of transmission stand legs are arranged at the lower part of the progressive lifting supporting plate, each transmission stand leg is provided with a transmission unit which is independent, each transmission unit comprises a traction rotating rod which is rotationally connected with the tail end of each transmission stand leg, the axle center of each traction rotating rod is fixed with a driving rotating shaft, and each driving rotating shaft is connected with a common power mechanism through a speed reducer;
arranging two progressive conveying devices at the tail end of the uplink track, symmetrically arranging the two progressive conveying devices along the left side and the right side of a longitudinal movement line of a galvanized steel pipe, wherein the material receiving stations are positioned at the inner sides of the transverse supporting arms at the left side and the right side, and the material receiving stations of the progressive conveying devices at the left side and the right side are staggered and overlapped;
the PLC comprises a first sensor positioned at the tail end of the receiving station and a second sensor positioned at the entering end of the receiving station, wherein the first sensor is used for sending a signal that a longitudinally moving galvanized steel pipe completely reaches the receiving station of the transverse supporting arm to the PLC, and the PLC sequentially and alternately sends starting commands to motors of the progressive conveying devices positioned at the left side and the right side of the longitudinal moving conveying line of the galvanized steel pipe; the second sensor is used for sending a signal for returning the progressive lifting supporting plate to the initial position to the PLC, and the PLC sends a starting command to the uplink track to enable the galvanized steel pipe moving longitudinally to enter the receiving station of the transverse supporting arm again;
the water cooling device comprises a cooling water tank, the water cooling continuous conveying station is arranged in the cooling water tank, the water cooling continuous conveying station comprises a bracket arranged in the cooling water tank, a horizontal power rotating shaft and two groups of rotating arms uniformly arranged on the horizontal power rotating shaft are arranged on the bracket, two parallel arc-shaped supporting rods are arranged in the cooling water tank, one end of each arc-shaped supporting rod is the inlet end of the cooling water tank, the other end of each arc-shaped supporting rod is the outlet end of the cooling water tank, and the rotating arms stir the hot-dip zinc steel tube to slide on the corresponding arc-shaped supporting rods;
the number of the group of rotating arms arranged on the horizontal power rotating shaft is multiple, and two longitudinally adjacent rotating arms respectively arranged on the two groups of rotating arms have an included angle of 5-15 degrees, so that the steel pipe can be obliquely born to fall into cooling water.
2. A multi-station continuous processing production line after hot dip galvanization of steel pipes according to claim 1, characterized in that: the number of transmission stand feet arranged on the progressive lifting supporting plate is 2, the traction rotating rods connected with the transmission stand feet in a rotating mode are vertically arranged, driving rotating shafts fixedly connected with the axes of the traction rotating rods are horizontally arranged on two sides of the power mechanism, the power mechanism is an electric motor, and the electric motor is connected with the speed reducer through a coupler or a transmission belt.
3. A multi-station continuous processing production line after hot dip galvanization of steel pipes according to claim 1, characterized in that: the axis part of the traction rotating rod is provided with an extension rod, the tail end of the extension rod is provided with a counterweight, and the counterweight is symmetrically arranged along the central line of the traction rotating rod.
4. A multi-station continuous processing production line after hot dip galvanization of steel pipes according to claim 1, characterized in that: the ascending track mainly comprises a magnetic roller frame and a power roller frame, wherein the magnetic roller frame is used for adsorbing the hot dip galvanized steel pipe to enable the hot dip galvanized steel pipe to incline upwards, the power roller frame is arranged at the tail end of the magnetic roller frame and is parallel to the magnetic roller frame, the conveying surface of the magnetic roller frame faces downwards, the conveying surface of the power roller frame faces upwards, and the transverse longitudinal section of the inner roller shaft of the power roller frame is of a V shape.
5. A multi-station continuous processing production line after hot dip galvanization of steel pipe according to claim 4, wherein: the ratio of the magnetic force of the magnetic roller shaft in the magnetic roller frame to the diameter of the hot-dip galvanized steel pipe is 20 kgf/1 mm.
6. A multi-station continuous processing production line after hot dip galvanization of steel pipe according to claim 4, wherein: the outer surface of the hot dip galvanized steel pipe of the ascending track is provided with an annular air blowing pipe arranged in the middle of the magnetic roller frame, an air blowing hole is formed in the inner pipe body of the annular air blowing pipe, and an air inlet pipe connected with a compressed air source is arranged at the upper part of the annular air blowing pipe.
7. A multi-station continuous processing production line after hot dip galvanization of steel pipes according to claim 1, characterized in that: the hot dip zinc steel pipe internal surface blows and smears the station including being located vertical slope support of placing on the horizontal support arm, set up in the pneumatic tong at slope support both ends, pneumatic tong is used for pressing from both sides tight hot dip zinc steel pipe, slope support lateral part is provided with rather than having its one end that corresponding inclination is controlled by control mechanism can push-and-pull in hot dip zinc steel pipe hollow push rod, the other end and the compressed air source intercommunication of hollow push rod, push-and-pull in hot dip zinc steel pipe hollow push rod tip is provided with interior shower nozzle, the lateral part or the tip of interior shower nozzle set up the fumarole of at least round that is acute angle with hot dip zinc steel pipe axis.
8. A multi-station continuous processing production line after hot dip galvanization of steel pipes according to claim 1, characterized in that: the descending track comprises a frame body, a V-shaped bracket capable of being overturned is arranged at the upper end of the frame body, the distance between an air cooling station of a transverse supporting arm of the progressive conveying device and the distance between adjacent stations on the transverse supporting arm is equal to the distance between adjacent stations on the transverse supporting arm, one end of the V-shaped bracket is connected with a piston rod of a lifting cylinder, the other end of the V-shaped bracket is hinged with one end of a longitudinal arm of the frame body, and a turnover mechanism is arranged in the middle of the V-shaped bracket and used for ensuring that the V-shaped bracket overturns and stands.
9. A multi-station continuous processing production line after hot dip galvanization of steel pipe according to claim 8, wherein: the V-shaped bracket comprises a supporting rod which is longitudinally arranged, the V-shaped bracket is arranged on the supporting rod, the V-shaped bracket is hinged with one end of the longitudinal arm through a supporting plate which is longitudinally arranged, a pipe sleeve which is longitudinally arranged is arranged on the supporting plate, one end of the supporting rod penetrates through the pipe sleeve to reach the hinged position of the supporting plate and the longitudinal arm, the other end of the supporting rod is hinged with a piston rod of the lifting cylinder, the turnover mechanism comprises a guiding short arm which is arranged in the middle of the supporting rod, the guiding short arm is hinged with a lifting limiting mechanism, and when the lifting limiting mechanism is used for ensuring that the supporting plate reaches a lifting limiting point, the lifting cylinder pushes and pulls the supporting rod to enable the supporting rod to rotate in the pipe sleeve, and the V-shaped bracket arranged on the supporting rod can stand and topple over.
10. A multi-station continuous processing production line after hot dip galvanization of steel pipe according to claim 9, wherein: the lifting limiting mechanism comprises a guide rod with an upper stop block and a lower stop block, the upper end of the guide rod is hinged with the tail end of the guide short arm, the guide rod moves in a lifting manner in a guide hole formed in the top plate of the frame body, the guide rod moves downwards until the supporting plate is flat, the upper stop block is limited by the guide hole, and the lifting cylinder pulls the supporting rod downwards to rotate in the pipe sleeve so that the V-shaped supporting hand tilts outwards; when the guide rod moves upwards to the inclined supporting plate, the lower stop block is limited by the guide hole, and the lifting cylinder pushes the supporting rod upwards to rotate in the pipe sleeve so that the V-shaped supporting hand is erected again.
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| CN108642424A (en) * | 2018-07-10 | 2018-10-12 | 吉林京华制管有限公司 | A kind of hot dip galvanizing pipe anti-scratch Anti-bending device and its working method |
| CN110355024B (en) * | 2019-07-16 | 2024-04-12 | 山东君诚绿能材料科技有限公司 | Online automatic efficient roll coating device and efficient roll coating method for steel pipe color ring |
| CN110699623B (en) * | 2019-10-25 | 2024-03-01 | 河北天创新材料科技有限公司 | Galvanized pipe production solvent processing apparatus |
| CN112267083B (en) * | 2020-09-09 | 2023-01-10 | 鸿亿机械工业(浙江)有限公司 | Automatic immersion type galvanized product production line |
| CN112359307B (en) * | 2020-11-11 | 2022-10-18 | 嘉兴恒瑞金属科技股份有限公司 | Environment-friendly hot dip galvanizing processing equipment |
| CN113637935B (en) * | 2021-07-30 | 2023-03-21 | 舟山市驰宇机械制造有限公司 | Main shaft cladding material processingequipment |
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