CN204771986U - A pipe end equipment of polishing for 3PE steel pipe is outer anticorrosive - Google Patents

Abstract

A pipe end grinding equipment for external anti-corrosion of 3PE steel pipes, including a grinding trolley, a pipe transfer mechanism, a pipe retainer, a grinding mechanism and a dust suction mechanism arranged on the grinding trolley. The grinding mechanism includes a wire brush and a grinding drive motor. It is characterized in that: the wire brush is set on the grinding platform and connected with the grinding drive motor, the grinding platform is connected with a lifting control cylinder and a rotating mechanism, and the grinding trolley is also equipped with a pressure tube device for stabilizing the steel pipe, the pressure tube device includes a pressure tube and a pressure tube cylinder, one end of the pressure tube is connected to the cylinder, and the other end is provided with a pressure head for stabilizing the steel tube against the center bottom of the inner wall of the steel tube. The utility model has simple structure and convenient operation. The conventional grinding along the axial direction of the steel pipe can be adjusted to arbitrarily adjust the grinding angle from the axial direction to the tangential direction. The tight and fixed pressure pipe device makes the grinding stable and uniform, and meets the needs of pipe end grinding of steel pipes with different diameters.

Description

Pipe end grinding equipment for external corrosion protection of 3PE steel pipes

technical field

The utility model relates to a grinding device, in particular to a pipe end grinding device used for external anti-corrosion of 3PE steel pipes.

Background technique

The 3PE outer anti-corrosion layer of the steel pipe is divided into 3 layers, the inner layer is an epoxy resin anti-corrosion layer, the outer layer is a PE protective layer, and the middle layer is an AD adhesive layer. Because the steel pipe needs to be welded and connected to the landfill site, the polyethylene layer at both ends of the steel pipe needs to be ground and cleaned with a steel brush about 4-8 inches long, which is used to weld the steel pipe end at the landfill site, and then the electric heating belt is wrapped for final protection .

The pipe end grinding device for the outer anti-corrosion layer of 3PE steel pipe generally includes a grinding car, a wire brush, a motor, a pipe retainer, a pipe rotation device, a vacuum cleaner, etc., and the motor is used to drive the wire brush. The conventional method is to grind along the axis of the steel pipe. When rolling along the track to the grinding position of the pipe end and rotating on the pipe rotating device, the grinding trolley is driven by the motor to move towards the steel pipe until the pipe stopper on the trolley blocks the steel pipe, then the wire brush motor is started, and the wire brush unit is lifted by the cylinder. Make the steel wire brush hit the steel pipe. With the rotation of the steel pipe, the outer anti-corrosion layer of the steel pipe will be knocked off. The direction of rotation of the steel wire brush is from the inside to the outside of the steel pipe. The chamfering angle of the anti-corrosion layer depends on the diameter of the wire brush. The angle is small and cannot be adjusted, which is not conducive to the final application of electric heating tape.

In addition, light-weight steel pipes will be lifted up by the grinding wire brush head during grinding, which may easily cause uneven grinding. It is necessary to be equipped with a pressure pipe device. The traditional pressure pipe is to press the outer diameter of the steel pipe, but because the outer diameter of the steel pipe varies widely, the mechanism More complicated, so the operation is more troublesome.

After investigation, the existing Chinese utility model patent No. CN201320727646.0 "An Anti-corrosion Steel Pipe End Grinding Device" includes a base, a lifting plate arranged on the base, and a rotating rotating plate connected to the lifting plate. A steel brush grinding head mechanism is provided on the rotating plate, and a spiral lifter is provided on the base to drive the lifting plate up and down. The anti-corrosion steel pipe end grinding device is equipped with a lifting plate and a rotating plate, and the steel brush grinds The head mechanism is installed on the rotating plate. By adjusting the height of the lifting plate, the height direction of the steel brush grinding head mechanism can be adjusted. At the same time, the angle of the rotating plate can be adjusted to adjust the grinding direction of the steel brush grinding head mechanism to adapt to different coatings at the pipe end. According to the requirements of angle grinding, the grinding angle of the pipe end coating can be controlled and adjusted. The grinding angle of the wire brush of this grinding device can be adjusted, but there is no description of the pipe pressing device for the steel pipe, so further improvement is needed in structure.

Contents of the invention

The technical problem to be solved by the utility model is to provide a pipe end grinding equipment for external anti-corrosion of 3PE steel pipes with reasonable structure, convenient operation, uniform and stable grinding in view of the above-mentioned technical situation.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a pipe end grinding equipment for external anticorrosion of 3PE steel pipes, including a grinding trolley, a pipe transfer mechanism, a pipe stopper, a grinding mechanism and a suction pipe installed on the grinding trolley. Dust mechanism, the grinding mechanism includes a wire brush and a grinding drive motor, characterized in that: the wire brush is set on the grinding platform and connected with the grinding drive motor, the grinding platform is connected with a lifting control cylinder and a rotating mechanism, and the grinding trolley also There is a pressure tube device for stabilizing the steel pipe. The tube pressure device includes a pressure tube and a pressure tube cylinder. One end of the pressure tube is hingedly connected to the cylinder, and the other end is provided with a pressure head that is offset against the center bottom of the inner wall of the steel pipe to stabilize the steel pipe.

As an improvement, the indenter is a single-roller indenter that can adapt to the rotation of the steel pipe, and the head of the pressure tube cylinder is tilted upwards and placed in the middle of the upper platform of the grinding trolley, and the tail end of the pressure tube is hinged to the head of the pressure tube cylinder Connection, the tail of the pressure tube cylinder is hinged on the upper platform, when the steel pipe is moved in place, the pressure tube is pushed by the pressure tube cylinder so that the pressure head and the inner wall of the steel pipe are pressed tightly.

As an improvement, the middle part of the front end of the upper platform of the grinding trolley is provided with a supporting structure for supporting the pressure pipe.

As an improvement, the pipe stopper is arranged on the front end side of the upper platform of the grinding trolley.

As an improvement, the rotating mechanism includes a rotary deceleration motor and a sprocket set. A rotating plate is arranged on the grinding platform, and the wire brush is fixed on the rotating plate. A central shaft is provided directly below the wire brush to connect with the grinding platform. The sprocket set Including the sprocket and the chain, the sprocket is fixed on the grinding platform and connected with the rotating deceleration motor, the chain is set on the outer edge of the rotating plate, when the rotating decelerating motor is started, the sprocket rotates, driving the chain to rotate, and the rotating plate is in the chain wheel group Rotate along the central axis at a certain angle under the action of the wire brush, and then realize the adjustment of the grinding angle of the wire brush.

As a further improvement, the rotating plate is in a right-angle fan-shaped structure, the chain is arranged on the outer arc surface of the fan-shaped structure, the rotation angle of the rotating plate is 0-90°, and a semicircular scale and a scale for measuring the rotating angle of the rotating plate are provided on the grinding platform. limit switch.

As a further improvement, the grinding platform is provided with fixing bolts for locking the rotating plate.

Further improvement, the pipe transfer mechanism includes two sets of hydraulic rotating rollers and a reduction motor, each group of hydraulic rotating rollers is composed of two rubber rollers, the rubber rollers are respectively supported on the lower sides of the steel pipe, driven by the rotation of the rubber rollers The steel pipe rotates.

As a further improvement, the dust suction mechanism includes a dust suction motor and a dust filter cover, the dust suction motor is arranged at the rear side of the upper platform of the grinding trolley, and there are two dust filter covers, which are respectively arranged on both sides of the dust suction motor.

As a further improvement, the lower end side of the grinding trolley is provided with a two-speed motor for driving the grinding trolley to move.

Compared with the prior art, the utility model has the advantages of being equipped with a rotating mechanism, which can drive the wire brush to rotate, and can adjust the conventional grinding along the axis of the steel pipe to adjust the grinding angle arbitrarily from the axial direction to the tangential direction. The grinding and chamfering can be controlled and adjusted, and there is a pressure tube mechanism for pressing and fixing the inner wall of the steel pipe, which avoids the problem that the original light steel pipe will be lifted up by the grinding wire brush when grinding, causing uneven grinding, making the grinding Stable and even. The utility model has the advantages of simple structure and convenient operation, and can meet the pipe end grinding requirements of steel pipes with different diameters.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is a structural schematic diagram of the transfer pipe mechanism of the present invention.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 4, a pipe end grinding equipment for external anti-corrosion of 3PE steel pipes, including a grinding trolley 1, a pipe transfer mechanism 2, a pipe retainer 3 installed on the grinding trolley 1, a grinding mechanism, and a pipe pressing device 8 and the dust suction mechanism, the upper platform 1.1 and the lower platform as the grinding platform 1.2 are arranged on the polishing trolley 1, and the lower end side of the polishing trolley 1 is provided with a two-speed motor 10 for driving the polishing trolley 1 to move, which can drive the polishing trolley 1 Forward and backward to ensure that the moving speed meets the requirements of use. The grinding mechanism includes a wire brush 6 and a grinding drive motor 61. The wire brush 6 is set on the grinding platform 1.2 and connected with the grinding drive motor 61 through the transmission wheel set and the wheel belt. The pipe stopper 3 It is arranged on the front end side of the upper platform 1.1 of the grinding trolley 1. The pressure tube device 8 includes a pressure tube 81 and a pressure tube cylinder 82. The tail end of the tube cylinder 82 is hinged on the upper platform 1.1, and the tail end of the pressure tube 81 is hingedly connected with the head of the pressure tube cylinder 82. The indenter 811, the indenter 811 is a single roller indenter, which can adapt to the rotation of the steel pipe 9. The middle part of the front end of the upper platform 1.1 of the grinding trolley 1 is provided with a support structure 1.3 for supporting the pressure tube 81. The support structure 1.3 can be realized by a lifting cylinder , when the steel pipe 9 moves in place, the pressure pipe 81 is pushed by the pressure pipe cylinder 82 so that the pressure head 811 is pressed against the inner wall of the steel pipe 9, because the height of the bottom of the steel pipe 9 remains unchanged when the steel pipe 9 is polished, and there is no need to adjust the pressure when the steel pipe 9 with different diameters is polished. Tube device 8 is convenient to use; the grinding platform 1.2 is connected with a lifting control cylinder and a rotating mechanism, and the rotating mechanism includes a rotating reduction motor 11 and a sprocket group. The brush 6 is arranged on the rotating plate 13, and the central shaft directly below the wire brush 6 is connected with the grinding platform 1.2. The sprocket set includes a sprocket 12 and a chain 14. The sprocket 12 is fixed on the grinding platform 1.2 and rotates with the reduction motor. 11 are connected, and the chain 14 is arranged on the outer arc surface of the fan-shaped structure of the rotating plate 13. When the rotation reduction motor 11 is started, the sprocket 12 rotates, driving the chain 14 to rotate, and the rotating plate 13 moves along the center under the action of the sprocket group. The shaft rotates at a certain angle, and then realizes the adjustment of the grinding angle of the wire brush 6. The rotation angle of the rotating plate 13 is 0-90°. Grinding platform 1.2 is provided with the fixed bolt that is used to lock rotating plate 13, because central axis is fixed on the just below wire brush 6, so just guarantees that the steel wire brush 6 after the rotation can still be polished to the just below steel pipe 9, can be from conventional Grinding along the axial direction of the steel pipe 9 is adjusted to adjust the grinding angle arbitrarily from the axial direction to the tangential direction, and the grinding chamfer of the anti-corrosion layer can be controlled and adjusted; Composed of two rubber rollers 21, the rubber rollers 21 are respectively supported on both sides below the steel pipe 9, through the rubber The rotation of the roller 21 drives the steel pipe 9 to rotate; the dust suction mechanism includes a dust suction motor 4 and a dust filter cover 5, the dust suction motor 4 is arranged on the rear side of the upper platform 1.1 of the grinding trolley 1, and the dust filter cover 5 is two, respectively On the upper platform 1.1, it is located on both sides of the dust collection motor 4, and a dust suction pipe 20 is arranged between the dust suction mechanism and the grinding mechanism. Inside the cover 5.

The working process is as follows: After the steel pipe 9 coated with the outer anti-corrosion layer rolls along the track to the pipe end grinding position, it is held up by two sets of hydraulic rotating rollers of the pipe transfer mechanism 2. The rubber roller 21 driven by the motor, the rotation of the rubber roller 21 drives the steel pipe 9 to rotate; the grinding trolley 1 is driven by the two-speed motor 10 to move towards the steel pipe 9 until the pipe retainer 3 blocks the steel pipe 9, and the pipe retainer 3 can be stretched back and forth to determine The starting position of the steel pipe 9 grinding, the pipe retainer 3 can also be adjusted horizontally on the trolley to adapt to steel pipes 9 of different diameters; To the steel pipe 9, with the rotation of the steel pipe 9, the outer anti-corrosion layer of the steel pipe will be knocked off. When the angle of the wire brush 6 needs to be adjusted, the fixing bolts will be removed, and the rotating deceleration motor 11 will be started to drive the sprocket 12, and the rotating plate 13 will rotate around the central axis. , the wire brush 6 rotates, so that the anti-corrosion layer is polished and chamfered for controllable adjustment. During the grinding process, the grinding trolley 1 starts to be driven by the double-speed motor 10 and slowly withdraws from the steel pipe 9 to completely polish the end of the steel pipe 9. During the grinding process, the dust suction mechanism sucks away the polished plastic powder and focus.

Claims (10)

1. the pipe end grinding apparatus for 3PE preventing external corrosion of steel pipe, comprise polishing dolly, rotating-barrel mechanism and the gear pipe device be located on polishing dolly, workpiece polishing mechanism and dust collection mechanism, described workpiece polishing mechanism comprises wire brush and polishing drive motors, it is characterized in that: described wire brush is arranged on polishing platform and is connected with polishing drive motors, polishing platform is connected with elevating control cylinder and rotating mechanism, polishing dolly is also provided with the pipe pressing device for stable steel pipe, pipe pressing device comprises pressure pipe and pressure pipe cylinder, one end of pressure pipe is articulated and connected cylinder, the other end is provided with and offsets for the pressure head of stable steel pipe with the inwall centre bottom of steel pipe.

2. pipe end grinding apparatus according to claim 1, it is characterized in that: described pressure head is single roller pressure head that can adapt to steel pipe rotary, pressure pipe cylinder head is inclined at the upper mounting plate medium position of polishing dolly upward, the tail end of pressure pipe is hinged with the head of pressure pipe cylinder and is connected, pressure pipe tail cylinder is hinged on upper mounting plate, when steel pipe movement puts in place, pressure pipe makes pressure head and steel pipe inner wall compress under the promotion of pressure pipe cylinder.

3. pipe end grinding apparatus according to claim 2, is characterized in that: the front center of the upper mounting plate of described polishing dolly is provided with the supporting construction for supporting pressure pipe.

4. pipe end grinding apparatus according to claim 3, is characterized in that: described gear pipe device is arranged on the side, front end of the upper mounting plate of polishing dolly.

5. pipe end grinding apparatus according to claim 1, it is characterized in that: described rotating mechanism comprises rotation reducing motor and chain wheel set, polishing platform is provided with a flap, wire brush is arranged on flap, be provided with central shaft immediately below wire brush to be connected with polishing platform, chain wheel set comprises sprocket wheel and chain, sprocket wheel is fixed on polishing platform and is connected with rotation reducing motor, chain is arranged on the outward flange of flap, when starting rotation reducing motor, sprocket rotation, drive chain rotates, flap is centrally axle certain angle rotation under the effect of chain wheel set, and then the grinding angle realizing wire brush regulates.

6. pipe end grinding apparatus according to claim 5, it is characterized in that: the rectangular sector structure of described flap, chain is arranged on the extrados of sector structure, the anglec of rotation of flap, at 0 ~ 90 °, polishing platform is provided with half circular scale for measuring the flap anglec of rotation and limit switch.

7. pipe end grinding apparatus according to claim 6, is characterized in that: described polishing platform is provided with the set bolt for being locked by flap.

8. the pipe end grinding apparatus according to the arbitrary claim of claim 1 to 7, it is characterized in that: described rotating-barrel mechanism comprises two groups of hydraulic swing transfer rollers and reducing motor, often organize hydraulic swing transfer roller to be made up of two rubber rollings, rubber rolling is supported on the both sides, below of steel pipe respectively, drives steel pipe rotary by the rotation of rubber rolling.

9. the pipe end grinding apparatus according to the arbitrary claim of claim 1 to 7, it is characterized in that: described dust collection mechanism comprises dust sucting motor and dust cover, dust sucting motor is arranged on the rearward position of the upper mounting plate of polishing dolly, and dust cover is two, is separately positioned on the both sides of dust sucting motor.

10. the pipe end grinding apparatus according to the arbitrary claim of claim 1 to 7, is characterized in that: the lower end sidepiece of described polishing dolly is provided with the double-speed motor for driving the movement of polishing dolly.