Steel pipe quenching clamping equipment

Abstract

The present invention discloses a steel pipe quenching clamping device, comprising a base, a front-end clamping mechanism, a rear-end clamping mechanism, two lifting supports, a cooling water spraying device, a walking mechanism, and a mobile platform; the front-end clamping mechanism and the rear-end clamping mechanism are relatively arranged on the upper surface of the mobile platform, and a connecting rod is arranged between the two; the walking mechanism is arranged on one side of the rear-end clamping mechanism, and drives the rear-end clamping mechanism to drive the front-end clamping mechanism to move on the mobile platform at the same time; the mobile platform is installed on the upper surface of the base; the lifting supports are relatively installed on the front half of the base; the cooling water spraying device is installed above the rear half of the base. The present invention ensures the fixing and rotating functions of the steel pipe during the quenching process, meets the requirements of uniform induction heating, makes the steel pipe radially cooled uniformly, and improves the quality of the steel pipe.

Description

Technical Field

[0001] The invention relates to a clamping device, in particular to a steel pipe quenching clamping device. Background Art

[0002] When processing some high-performance steel pipes, in order to make the steel pipes achieve the required physical and chemical properties, the quenching process requires heating the steel pipes to a high temperature and then cooling them to a low temperature in a very short time.

[0003] Since the steel pipe to be quenched is large and inconvenient to place, the steel pipe will be unevenly heated and cooled by water spray during the quenching process. Summary of the invention

[0004] The purpose of the invention is to solve the problems in the prior art and provide a steel pipe quenching clamping device.

[0005] The technical solution of the present invention is: a steel pipe quenching clamping equipment, including a base, a front-end clamping mechanism, a rear-end clamping mechanism, two lifting supports, a cooling water spraying device, a walking mechanism, and a mobile platform; the front-end clamping mechanism and the rear-end clamping mechanism are relatively arranged on the upper surface of the mobile platform, and a connecting rod is provided between the two; the walking mechanism is arranged on one side of the rear-end clamping mechanism, and drives the rear-end clamping mechanism to drive the front-end clamping mechanism to move on the mobile platform at the same time; the mobile platform is installed on the upper surface of the base; the lifting supports are relatively installed on the front half of the base; the cooling water spraying device is installed above the rear half of the base.

[0006] Preferably, the base comprises a front seat and a rear seat, and the upper planes of the front seat and the rear seat are inclined at 3-5 degrees.

[0007] Preferably, the lifting support comprises a support base, a mounting frame pivotally connected to the support base, and a cylinder driving the mounting frame to rotate, and a V-shaped support member is provided on the top of the mounting frame.

[0008] Preferably, the cooling water spraying device comprises a water supply device, a water supply pipe connected to the water supply device, and a water distributor connected to the water supply pipe.

[0009] Preferably, a pneumatic support roller is provided below the water supply pipe.

[0010] Preferably, the front end clamping mechanism comprises a front mounting seat, a rotating tube, a fixed tube connected to the rotating tube, a rotating tube driving device, and a clamping device; the rotating tube is mounted on the inner ring of the front mounting seat and rotates under the drive of the rotating tube driving device; the rotating driving device is arranged on one side of the front mounting seat and drives the rotating tube to rotate through a transmission member; one end of the clamping device is placed in the fixed tube, and the other end is arranged close to the outer side of the rotating tube.

[0011] Preferably, the front mounting seat includes a base and a support seat installed on the upper surface of the base; the upper part of the support seat is a circular hollow structure, and the outer wall of the rotating tube is in sliding contact with the ball bearings arranged in the hollow structure; annular sealing plates are provided on both sides of the rotating tube.

[0012] Preferably, the clamping device comprises three clamping claws pivotally connected to the inner wall of the fixed tube at equal intervals, a sliding rod pivotally connected to the three clamping claws and controlling the tightness thereof, and a pair of driving cylinders for driving the sliding rod to extend and retract.

[0013] Three pivot joints are arranged at equal intervals on the inner wall of the fixed tube, and the front end of the clamping claw is pivotally connected to the pivot joints; a fixed plate is arranged on the inner wall of the rotating tube, and the driving cylinder is symmetrically installed on the fixed plate, and the piston rod of the driving cylinder is connected to the tail end of the sliding rod to drive its reciprocating motion.

[0014] The slide bar is slidably arranged at the center of the fixed plate, one end of the slide bar is connected with three clamping claws, and the other end is connected with the piston rods of the two driving cylinders through a connecting plate.

[0015] A sprocket wheel is arranged on the outer wall of the rotating tube, and the driving device is connected with the sprocket wheel through a chain to drive the rotating tube to rotate in the mounting seat.

[0016] Preferably, the rear end clamping mechanism includes a rear mounting seat, a rear end rotating tube, a rear end fixed tube connected to the rear end rotating tube, a rear end clamping device, an adjustment device for controlling the tightness of the rear end clamping device, and a power supply device provided on the rear end rotating tube.

[0017] The rear end rotating tube is installed on the inner circle of the rear mounting seat; one end of the rear end clamping device is placed in the rear end fixed tube, and the adjusting device is arranged on the outer wall of the rear end rotating tube.

[0018] Preferably, the rear mounting seat includes a rear base and a rear support seat installed on the upper surface of the rear base; the upper part of the rear support seat is a circular hollow structure, and the outer wall of the rear end rotating tube is in sliding contact with the ball bearings arranged in the hollow structure; annular sealing plates are provided on both sides of the rear end rotating tube.

[0019] The rear end clamping device includes a rear end clamping claw, a pull rod pivotally connected to the rear end clamping claw and controlling its tightness, and a gear installed at the tail end of the pull rod; the rear end clamping claw is three front ends pivotally connected to the inner wall of the rear end fixed tube at equal intervals; three pivot joints are evenly spaced on the inner wall of the rear end fixed tube, and the front end of the rear end clamping claw is pivotally connected to the pivot joints.

[0020] The adjustment device comprises a driving motor and a gear rotating mechanism circumferentially arranged on the outer periphery of the fixed tube; the driving motor is connected to the gear rotating mechanism through a chain.

[0021] The gear rotating mechanism comprises a worm shaft reducer connected to the driving motor, a cylindrical gear meshed with the gear on the reducer, and a transmission shaft assembly meshed with the cylindrical gear for transmission.

[0022] The present invention has the following beneficial effects:

[0023] 1) The present invention is aimed at designing, processing and manufacturing special equipment for quenching heat treatment of the inner wall of the steel pipe, with a simple structure and a stable and reliable system;

[0024] 2) The spiral welded pipe with a diameter of Φ832mm×6000mm can move stably at the set speed on the inclined platform and rotate at the set speed at the same time, leaving space for transformation for steel pipes with a diameter of Φ832mm to Φ500mm, and a bearing seat installation interface for 3000mm long steel pipes;

[0025] 3) The platform, internal water spray cooling system and induction coil are effectively connected and fixed without interference, so as to meet the normal heating and cooling functions of the inner wall of the steel pipe during quenching treatment;

[0026] 4) Design the best match with the induction heating system to meet the technical requirements of coil and busbar installation, induction heating, inner wall cooling and water collection, and steel pipe clamping for local heat treatment of steel pipes;

[0027] 5) If the quenched steel pipe is a spiral welded pipe, there is a weld protrusion on its outer surface, so a large bearing rotation method combined with self-centering clamping and locking is used to ensure that the spiral welded pipe will not produce jumps caused by the weld protrusion during rotation, and avoid axial displacement during rotation of the steel pipe; a rotating fixed pipe with the same concentricity is set at each end of the steel pipe, and a set of self-aligning three-claw (or four-claw) clamping and locking devices are set on each fixed pipe. The large bearing seat away from the induction coil side is adjustable along the walking direction, and the adjustment range is greater than 40mm, which meets the uncertainty of the steel pipe length of 6000mm±5mm, and at the same time, the bearing seat installation interface is reserved for 3000mm±5mm long steel pipes;

[0028] 6) The front clamping mechanism of the present invention is used in conjunction with the rear clamping mechanism, and the steel pipe is placed between the two clamping mechanisms, and the mobile platform is used to perform heat treatment of the local hot-rolled wear-resistant steel pipe, which meets the technical requirements of heating the outer side of the steel pipe, spraying water cooling on the inner side, and temperature uniformity of the head and tail of the steel pipe. The present invention ensures the functions of fixing and rotating the steel pipe during the quenching process, meets the requirements of uniform induction heating, makes the radial cooling of the steel pipe uniform, and improves the quality of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a stereogram of the present invention.

[0030] Figure 2 It is an assembly diagram of the front and rear end clamping mechanism of the present invention.

[0031] Figure 3 It is a front stereoscopic view of the front end clamping mechanism of the present invention.

[0032] Figure 3a It is a side perspective view of the front end clamping mechanism of the present invention.

[0033] Figure 4 It is a cross-sectional view of the front end clamping mechanism of the present invention.

[0034] Figure 5 It is a side view of the front end clamping mechanism of the present invention.

[0035] Figure 6 It is a front stereoscopic view of the rear end clamping mechanism of the present invention.

[0036] Figure 7 It is a side view of the rear end clamping mechanism of the present invention.

[0037] Figure 8 It is a partial stereoscopic view of the rear end clamping mechanism of the present invention. DETAILED DESCRIPTION

[0038] In order to make the technical means, technical features, invention objectives and technical effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific illustrations.

[0039] like Figure 1 and Figure 2 As shown, a steel pipe quenching clamping device of the present invention includes a base 1, a front end clamping mechanism 2, a rear end clamping mechanism 3, two lifting supports 4, a cooling water spraying device 5, a walking mechanism 6, and a moving platform 7.

[0040] The front-end clamping mechanism 2 and the rear-end clamping mechanism 3 are arranged on the upper surface of the mobile platform 7 relative to each other, and a connecting rod 8 is provided between the two; the walking mechanism 6 is arranged on one side of the rear-end clamping mechanism 3, and drives the rear-end clamping mechanism 3 to drive the front-end clamping mechanism 2 to move on the mobile platform 7 at the same time.

[0041] Specifically, the walking mechanism 6 in the present invention includes a walking motor 61, which is installed on one side of the rear end clamping mechanism 3 and is connected to a gear through a chain. Driven by the driving motor, the front end clamping mechanism 2 and the rear end clamping mechanism 3 move on the mobile platform 7, so that the steel pipe shuttles between the quenching device 9 and the cooling device for real-time quenching.

[0042] The mobile platform 7 is installed on the upper surface of the base 1; the lifting support 4 is relatively installed on the front half of the base 1; the cooling water spray device 5 is installed above the rear half of the base 1, and is driven by the walking mechanism 6 to extend the cooling water spray device 5 into the steel pipe to spray water.

[0043] The base 1 in the present invention comprises a front seat 11 and a rear seat 12, and the upper plane thereof is tilted by 3-5 degrees as a whole, and the tilt angle can be selected according to the needs of the on-site working conditions.

[0044] The lifting support 4 in this embodiment includes a support base, a mounting frame pivotally connected to the support base, and a cylinder for driving the mounting frame to rotate. A V-shaped support member 41 is provided on the top of the mounting frame to support the steel pipe. The position of the steel pipe can be accurately adjusted through the action of the lifting support 4 so that it can be assembled between the front clamping mechanism 2 and the rear clamping mechanism 3.

[0045] The cooling water spraying device 5 in the present invention comprises a water supply device 51 , a water supply pipe 52 connected to the water supply device 51 , and a water distributor connected to the water supply pipe 52 ; a pneumatic support roller 53 is provided below the water supply pipe 52 .

[0046] like Figure 3 , Figures 3a to 6 The front end clamping mechanism 2 of the present invention includes a front mounting seat 21, a rotating tube 22, a fixed tube 23 connected to the rotating tube, a rotating tube driving device 24, and a clamping device 25.

[0047] The rotating tube 22 is installed on the inner circle of the front mounting seat 21 and rotates under the drive of the rotating tube driving device 24; the rotating driving device 24 is arranged on one side of the front mounting seat 21, and drives the rotating tube 22 to rotate through a transmission member; one end of the clamping device 25 is placed in the fixed tube 23, and the other end is arranged close to the outer side of the rotating tube 22.

[0048] The specific structure, connection relationship and position relationship of each component are as follows:

[0049] The front mounting seat 21 includes a base 211 and a support seat 212 mounted on the upper surface of the base 211. The upper portion of the support seat 212 is a circular hollow structure, and the outer wall of the rotating tube 22 is in sliding contact with the ball bearings disposed in the hollow structure. The rotation principle of this structure is similar to that of a bearing, that is, the rotating tube 22 rotates in the support seat 212 driven by an external force.

[0050] Since the present invention is applied to the quenching of steel pipes, the external environment is relatively complex. In the present invention, annular sealing plates are provided on both sides of the rotating tube 22 to protect the internal components thereof.

[0051] The clamping device 25 includes three clamping claws 251 pivotally connected to the inner wall of the fixed tube 23 at equal intervals, a slide bar 252 pivotally connected to the three clamping claws 251 and controlling the tightness thereof, and a pair of driving cylinders 253 driving the slide bar 252 to extend and retract.

[0052] Specifically, three pivot joints 231 are provided at equal intervals on the inner wall of the fixed tube 23 , the front end of the clamping claw 251 is pivotally connected to the pivot joint 231 , and the three clamping claws 251 are driven by the driving cylinder 253 to adjust the tightness of the steel tube.

[0053] A fixed plate 221 is provided on the inner wall of the rotating tube 22, and the driving cylinder is symmetrically mounted on the fixed plate 221, and the piston rod of the driving cylinder 253 is connected to the tail end of the sliding rod 252 to drive its reciprocating motion, thereby realizing the three clamping claws 251 to adjust the tightness of the steel pipe.

[0054] The slide rod 252 of the present invention is slidably arranged at the center position of the fixed plate 221. One end of the slide rod 252 is connected to the three clamping claws 251, and the other end is connected to the piston rods of the two driving cylinders 253 through the connecting plate 254, thereby driving the slide rod 252 to move to control the tightness of the three clamping claws 251.

[0055] A support frame 222 for mounting a pneumatic rotary joint is also provided on the outer side of the fixed plate 221 . The support frames 222 are arranged on the outer side of the rotary tube 22 at equal intervals.

[0056] A sprocket 223 is provided on the outer wall of the rotating tube 22, and the driving device is connected to the sprocket through a chain to drive the rotating tube 22 to rotate in the front mounting seat 21, thereby achieving the purpose of driving the steel tube to rotate for quenching.

[0057] like Figures 6 to 8 As shown, the rear end clamping mechanism 3 of the present invention includes a rear mounting seat 31, a rear end rotating tube 32, a rear end fixing tube 33 connected to the rear end rotating tube 32, a rear end clamping device 34, an adjustment device 35 for controlling the tightness state of the rear end clamping device 34, and a power supply device 36 arranged on the rear end rotating tube 32.

[0058] The rear end rotating tube 32 is installed on the inner ring of the rear mounting seat 31 and rotates driven by the front end clamping mechanism; one end of the rear end clamping device 34 is placed in the rear end fixed tube 33, and the adjustment device 35 is arranged on the outer wall of the rear end rotating tube 32.

[0059] The rear mounting seat 31 in the present invention includes a rear base 311 and a rear support seat 312 installed on the upper surface of the rear base 311 .

[0060] The upper part of the rear support seat 312 is a circular hollow structure, and the outer wall of the rear end rotating tube 32 is in sliding contact with the ball disposed in the hollow structure, that is, the rear end rotating tube 32 is connected to the steel pipe to be quenched, and rotates with it under the drive of the front end clamping mechanism.

[0061] In order to ensure that it rotates after being fixed together with the steel pipe on the front-end clamping mechanism, the rear-end clamping device 34 in the present invention includes a rear-end clamping claw 341, a pull rod 342 pivotally connected to the rear-end clamping claw 341 and controlling its tightness, and a gear bar 343 installed at the tail end of the pull rod 342; the rear-end clamping claw 341 is three front ends pivotally connected to the inner wall of the rear-end fixed tube 33 at equal intervals.

[0062] Three pivot joints are evenly spaced on the inner wall of the rear end fixing tube 33, and the front end of the rear end clamping claw 341 is pivotally connected to the pivot joint, and the tightness of the steel pipe can be adjusted under the control of the adjustment device, thereby achieving the purpose of fixing and disassembling the steel pipe.

[0063] The adjustment device 35 in the present invention includes a driving motor 361 and a gear rotating mechanism 37 circumferentially arranged on the outer periphery of the rear end fixing tube 33; the driving motor 361 is connected to the gear rotating mechanism 37 through a chain, and the power provided by the driving motor 361 drives the operation of the gear rotating mechanism 37, and the gear rotating mechanism 37 drives the gear bar 343 to adjust the tightness of the rear end clamping claw 341.

[0064] The gear rotating mechanism 37 in the present invention includes a worm gear reducer 371 connected to the driving motor 361, a cylindrical gear 372 meshing with the gear on the reducer 371, and a transmission shaft assembly 38 meshing with the cylindrical gear for transmission.

[0065] The transmission shaft assembly 38 in the present invention is divided into three groups, each of which is provided with a gear group meshing with the pull rod 342 gear. The pull rod 342 is driven by the gear bar to move to adjust the tightness of the rear end clamping claw 341, thereby further realizing the fixation and disassembly of the steel pipe.

[0066] The front-end clamping mechanism of the present invention is used in conjunction with the rear-end clamping mechanism, and the steel pipe is placed between the two clamping mechanisms, and the mobile platform is used to perform heat treatment of the local hot-rolled wear-resistant steel pipe, which meets the technical requirements of heating the outer side of the steel pipe and cooling the inner side with water spraying, and temperature uniformity of the head and tail of the steel pipe. The present invention ensures the functions of fixing and rotating the steel pipe during the quenching process, meets the requirements of uniform induction heating, makes the radial cooling of the steel pipe uniform, and improves the quality of the steel pipe.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention should belong to the technical scope of the present invention.

Claims

1. Steel pipe quenching clamping equipment, characterized by: It includes a base, a front-end clamping mechanism, a rear-end clamping mechanism, two lifting supports, a cooling water spraying device, a walking mechanism, and a mobile platform; the front-end clamping mechanism and the rear-end clamping mechanism are relatively arranged on the upper surface of the mobile platform, and a connecting rod is arranged between the two; the walking mechanism is arranged on one side of the rear-end clamping mechanism, and drives the rear-end clamping mechanism to drive the front-end clamping mechanism to move on the mobile platform at the same time; the mobile platform is installed on the upper surface of the base; the lifting support is relatively installed on the front half of the base; the cooling water spraying device is installed above the rear half of the base; The front end clamping mechanism comprises a front mounting seat, a rotating tube, a fixed tube connected to the rotating tube, a rotating tube driving device, and a clamping device; the rotating tube is mounted on the inner ring of the front mounting seat and rotates under the drive of the rotating tube driving device; the rotating tube driving device is arranged on one side of the front mounting seat and drives the rotating tube to rotate through a transmission member; one end of the clamping device is placed in the fixed tube, and the other end is arranged close to the outer side of the rotating tube; The rear end clamping mechanism comprises a rear mounting seat, a rear end rotating tube, a rear end fixing tube connected to the rear end rotating tube, a rear end clamping device, an adjustment device for controlling the tightness of the rear end clamping device, and a power supply device provided on the rear end rotating tube; The rear end rotating tube is installed on the inner circle of the rear mounting seat; one end of the rear end clamping device is placed in the rear end fixed tube, and the adjusting device is arranged on the outer wall of the rear end rotating tube.

2. The steel pipe quenching and clamping equipment according to claim 1, characterized in that: The base comprises a front seat and a rear seat, and the upper planes thereof are inclined by 3-5 degrees.

3. The steel pipe quenching and clamping equipment according to claim 1, characterized in that: The lifting support comprises a supporting base, a mounting frame pivotally connected to the supporting base, and a cylinder driving the mounting frame to rotate. A V-shaped supporting member is arranged on the top of the mounting frame.

4. The steel pipe quenching and clamping equipment according to claim 1, characterized in that: The cooling water spraying device comprises a water supply device, a water supply pipeline connected to the water supply device, and a water distributor connected to the water supply pipeline.

5. The steel pipe quenching and clamping equipment according to claim 4, characterized in that: A pneumatic support roller is arranged below the water supply pipeline.

6. The steel pipe quenching and clamping equipment according to claim 1, characterized in that: The front mounting seat includes a base and a support seat installed on the upper surface of the base; the upper part of the support seat is a circular hollow structure, and the outer wall of the rotating tube is in sliding contact with the ball disposed in the hollow structure; annular sealing plates are provided on both sides of the rotating tube.

7. The steel pipe quenching and clamping equipment according to claim 6, characterized in that: The clamping device comprises three clamping claws pivotally connected to the inner wall of the fixed tube at equal intervals, a sliding rod pivotally connected to the three clamping claws and controlling the tightness thereof, and a pair of driving cylinders driving the sliding rod to extend and retract; Three pivot joints are arranged at equal intervals on the inner wall of the fixed tube, and the front end of the clamping claw is pivotally connected to the pivot joints; a fixed plate is arranged on the inner wall of the rotating tube, and the driving cylinder is symmetrically mounted on the fixed plate, and the piston rod of the driving cylinder is connected to the tail end of the sliding rod to drive the sliding rod to reciprocate; the sliding rod is slidably arranged at the center position of the fixed plate, one end of which is connected to the three clamping claws, and the other end is connected to the piston rods of the two driving cylinders through a connecting plate; A sprocket wheel is arranged on the outer wall of the rotating tube, and the driving device is connected with the sprocket wheel through a chain to drive the rotating tube to rotate in the mounting seat.

8. The steel pipe quenching and clamping equipment according to claim 1, characterized in that: The rear mounting seat comprises a rear base and a rear support seat mounted on the upper surface of the rear base; the upper portion of the rear support seat is a circular hollow structure, and the outer wall of the rear end rotating tube is in sliding contact with the ball bearings arranged in the hollow structure; annular sealing plates are arranged on both sides of the rear end rotating tube; The rear end clamping device comprises a rear end clamping claw, a pull rod pivotally connected to the rear end clamping claw and controlling its tightness, and a gear bar installed at the rear end of the pull rod; the rear end clamping claw is three front ends pivotally connected to the inner wall of the rear end fixing tube at equal intervals; three pivot joints are arranged at equal intervals on the inner wall of the rear end fixing tube, and the front end of the rear end clamping claw is pivotally connected to the pivot joints; The adjustment device comprises a driving motor and a gear rotating mechanism circumferentially arranged on the outer circumference of the fixed tube; the driving motor is connected to the gear rotating mechanism through a chain; The gear rotating mechanism comprises a worm shaft reducer connected to the driving motor, a cylindrical gear meshed with the gear on the reducer, and a transmission shaft assembly meshed with the cylindrical gear for transmission.

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