阅读说明：本技术 钢管内壁定点修磨装置 (Steel pipe inner wall fixed point grinding device ) 是由 邱锋 周建根 吴胜强 陆明红 于 2021-08-06 设计创作，主要内容包括：钢管内壁定点修磨装置,包括沿直线方向行走的移动小车,移动小车上设置有电机,电机的输出端连接有修磨轴,修磨轴上设置有修磨头,修磨头利用移动小车的行走在钢管中移动,移动小车的行走轴上设置有和行走轴同步旋转的编码器。本发明,打磨时能够精准定位到钢管需要修磨的部位或者区域,实现精准打磨。(The fixed-point grinding device for the inner wall of the steel pipe comprises a moving trolley traveling in a linear direction, wherein a motor is arranged on the moving trolley, the output end of the motor is connected with a grinding shaft, a grinding head is arranged on the grinding shaft, the grinding head moves in the steel pipe by utilizing the traveling of the moving trolley, and an encoder synchronously rotating with the traveling shaft is arranged on the traveling shaft of the moving trolley. According to the steel pipe polishing device, the position or the area of the steel pipe to be polished can be accurately positioned during polishing, and accurate polishing is achieved.)

1. Steel pipe inner wall fixed point grinding device, including removal dolly (11) of walking along the linear direction, be provided with motor (12) on removal dolly (11), the output of motor (12) is connected with coping axle (13), is provided with on coping axle (13) and repaiies bistrique (14), and the walking that utilizes removal dolly (11) is repaiied bistrique (14) removes in the steel pipe, its characterized in that, is provided with encoder (15) with walking axle synchronous revolution on the walking axle of removal dolly (11).

2. The fixed-point grinding device for the inner wall of the steel tube according to claim 1, further comprising a positioning piece (20) for positioning the end of the steel tube.

3. The fixed-point steel pipe inner wall grinding device according to claim 1, further comprising a shaft roller frame (16) for supporting the grinding shaft (13), wherein a support roller (161) is arranged on the shaft roller frame (16).

4. The fixed-point grinding device for the inner wall of the steel pipe according to claim 3, wherein a first lifting device (17) for controlling the lifting of the motor (12) is arranged on the moving trolley (11); and a second lifting device (18) for controlling the lifting of the supporting roller (161) is arranged on the shaft roller frame (16).

5. The fixed-point grinding device for the inner wall of the steel pipe according to claim 4, wherein the first lifting device (17) comprises a first screw rod mechanism, the motor (12) is mounted on a first screw rod table of the first screw rod mechanism, and the movement direction of the first screw rod table is a vertical direction.

6. The fixed-point grinding device for the inner wall of the steel pipe according to claim 4, wherein the second lifting device (18) comprises a second screw mechanism, the supporting roller (161) is arranged on a second screw platform of the second screw mechanism, and the moving direction of the second screw platform is a vertical direction.

7. The fixed-point grinding device for the inner wall of the steel pipe according to claim 4, wherein the first lifting device (17) comprises a first fixed cylinder (171) with a first internal thread, a first threaded lifting rod (172) engaged with the first internal thread, and a first handle (173) arranged on the first threaded lifting rod (172); the top of screw lifter (172) is provided with support head (174) that have spread groove (175), motor (12) shell is connected with motor mounting bracket (19), be provided with on motor mounting bracket (19) spacing connecting portion (191) in spread groove (175), rotary motion is done for connecting portion (191) when screw lifter (172) rotate in spread groove (175).

8. The fixed-point grinding device for the inner wall of the steel pipe according to claim 4, wherein the second lifting device (18) comprises a second fixed cylinder (181) with a second internal thread fixed on the shaft roller frame (16), a second threaded lifting rod (182) meshed with the second internal thread, and a support roller mounting seat (183) connected with the second threaded lifting rod (182), and a roller shaft of the support roller (161) is mounted on the support roller mounting seat (183).

9. The fixed point grinding device for the inner wall of the steel pipe according to claim 3, 4, 5, 6, 7 or 8, wherein the supporting roller (161) comprises a roller body (1611) and limiting blocks (1612) arranged at two ends of the roller body (1611), the limiting blocks (1612) and the roller body (1611) form a limiting groove (1613), and the grinding shaft (13) is limited in the limiting groove (1613).

10. The fixed-point grinding device for the inner wall of the steel pipe according to claim 1, further comprising an ash suction device (0) arranged at the mouth of the steel pipe; the dust suction device (0) comprises a suction fan (01) and a suction pipe (02) connected with the suction fan (01).

Technical Field

The invention relates to the field of steel pipe inner wall grinding, in particular to a fixed-point steel pipe inner wall grinding device.

Background

In the process of processing a steel strip into a steel pipe, the steel pipe is generally subjected to the steps of flattening, rough forming, welding, deburring, fine forming, cutting and the like, wherein in the welding step, potential welding defects may exist, so that welding quality detection is generally carried out, the defect part is ground after the welding defect position is found, a certain range of overlaying layers around the defect part is excavated, and then the overlaying layers are subjected to repair welding on welding equipment.

Chinese patent with application number CN201320277722.2 discloses a sharpening machine for inner holes of seamless steel tubes, which comprises a moving trolley, a shaft roller motor and a trolley motor, wherein the moving trolley drives wheels to guide and run on a track through the trolley motor, the shaft roller motor is coaxially and fixedly installed on the upper plane of the moving trolley, an output shaft of the shaft roller motor is coaxially and fixedly connected with a sharpening shaft, and a grinding wheel is coaxially and fixedly installed at the end part of the sharpening shaft; a plurality of shaft roller frames are fixedly arranged on one side edge of a movable trolley coaxial with the track at intervals, a grinding shaft and a steel pipe workpiece are mounted on the shaft roller frames in a frame mode, the grinding shaft and the steel pipe workpiece are arranged coaxially, and the grinding shaft enters an inner hole of the steel pipe workpiece to be coaxially ground under the driving of the movable trolley. However, it is difficult to obtain a precise travel distance for the moving trolley in the sharpening machine, and thus, the sharpening structure, i.e., the grinding wheel, cannot be precisely positioned to a portion or region of the steel pipe to be sharpened.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the fixed-point grinding device for the inner wall of the steel pipe, which can be used for accurately positioning a part or an area of the steel pipe to be ground during grinding, so as to realize accurate grinding.

The fixed-point grinding device for the inner wall of the steel pipe comprises a moving trolley traveling in a linear direction, wherein a motor is arranged on the moving trolley, the output end of the motor is connected with a grinding shaft, a grinding head is arranged on the grinding shaft, the grinding head moves in the steel pipe by utilizing the traveling of the moving trolley, and an encoder synchronously rotating with the traveling shaft is arranged on the traveling shaft of the moving trolley.

According to the technical scheme, the encoder which synchronously rotates with the travelling shaft is arranged on the travelling shaft of the moving trolley, so that the position or the area of the steel pipe which needs to be polished can be accurately positioned during polishing, and accurate polishing is realized.

Preferably, the steel pipe end positioning device further comprises a positioning piece for positioning the steel pipe end.

Preferably, the grinding machine further comprises a shaft roller frame for supporting the grinding shaft, and a supporting roller is arranged on the shaft roller frame.

Preferably, the supporting roller comprises a roller body and limiting blocks arranged at two ends of the roller body, the limiting blocks and the roller body form a limiting groove, and the grinding shaft is limited in the limiting groove.

Preferably, the moving trolley is provided with a first lifting device for controlling the motor to lift; and a second lifting device for controlling the lifting of the supporting roll is arranged on the shaft roll frame.

Preferably, the first lifting device comprises a first screw rod mechanism, the motor is mounted on a first screw rod table of the first screw rod mechanism, and the moving direction of the first screw rod table is the vertical direction.

Preferably, the second lifting device comprises a second screw rod mechanism, the supporting roller is arranged on a second screw rod platform of the second screw rod mechanism, and the moving direction of the second screw rod platform is the vertical direction.

Preferably, the lifting device comprises a first fixed cylinder with a first internal thread, a first threaded lifting rod meshed with the first internal thread, and a first handle arranged on the first threaded lifting rod; the top of the first threaded lifting rod is provided with a supporting head with a first connecting groove, the motor shell is connected with a motor mounting frame, the motor mounting frame is provided with a limiting position on the connecting portion in the first connecting groove, and the first connecting groove is in rotary motion relative to the connecting portion when the first threaded lifting rod rotates.

Preferably, the second lifting device comprises a second fixed cylinder with a second internal thread fixed on the shaft roller frame, a second threaded lifting rod meshed with the second internal thread, and a support roller mounting seat connected with the second threaded lifting rod, and a roller shaft of the support roller is mounted on the support roller mounting seat.

Preferably, the motor mounting frame is connected with a protection shaft sleeve coaxially arranged with the grinding shaft, the grinding shaft penetrates through the protection shaft sleeve, a bearing is arranged at one end, far away from the motor mounting frame, of the protection shaft sleeve, and the grinding shaft is mounted on the bearing.

Preferably, the sharpening head comprises a sharpening sheet or a grinding wheel.

Preferably, the moving trolley is arranged on the guide rail.

Preferably, the device also comprises an ash suction device arranged at the pipe orifice of the steel pipe; the dust suction device comprises a suction fan and a suction pipe connected with the suction fan.

In conclusion, the invention has the following beneficial effects:

1: according to the invention, the encoder which rotates synchronously with the walking shaft is arranged on the walking shaft of the movable trolley, so that the part or area of the steel pipe to be polished can be accurately positioned during polishing, and accurate polishing is realized;

2: according to the steel pipe grinding device, the positioning piece is designed to position the end part of the steel pipe, so that the grinding device can be accurately positioned to the part or area of the steel pipe to be ground when grinding;

3: according to the invention, the dust suction device is designed, the dust suction device comprises the suction fan and the suction pipe connected with the suction fan, and the suction fan can timely discharge residues generated by polishing out of the steel pipe through the suction pipe, so that the polishing efficiency is improved.

4: the first lifting device and the second lifting device enable the grinding shaft and the grinding head 14 on the grinding shaft to move along the thickness direction of the steel pipe, and provide a precondition for the grinding head 14 to dig out a certain range of overlaying layers around.

Drawings

FIG. 1 is a schematic view of a sharpening device;

FIG. 2 is a schematic view of the mating of the support roll with the sharpening shaft;

FIG. 3 is an enlarged view of FIG. 1 at A;

FIG. 4 is an enlarged view of FIG. 1 at B;

FIG. 5 is an enlarged view of FIG. 3 at C;

FIG. 6 is a schematic view of the connection between the supporting roller mounting seat and the second screw lifting rod in the second lifting device.

Detailed Description

The invention will be further explained by means of specific embodiments with reference to the drawings.

Example (b): referring to fig. 1-4, the steel tube inner wall fixed point grinding device includes a moving trolley 11 traveling along a straight line, in order to ensure a moving direction, the moving trolley 11 is disposed on a guide rail and guided by the guide rail, a motor 12 is disposed on the moving trolley 11, an output end of the motor 12 is connected to a grinding shaft 13, a grinding head 14 is disposed on the grinding shaft 13, the grinding head 14 includes a grinding sheet or a grinding wheel, the grinding head 14 is used for grinding a defect part, the grinding head 14 moves in a steel tube by using the traveling of the moving trolley 11, the moving trolley 11 has a traveling shaft, an encoder 15 rotating synchronously with the traveling shaft is disposed on the traveling shaft of the moving trolley 11, the encoder 15 determines a traveling distance of the moving trolley 11 by detecting the number of the rotating turns of the traveling shaft, so that the grinding head 14 in the steel tube inner wall fixed point grinding device in this embodiment can be accurately positioned at a part or area where the steel tube needs to be ground, realize accurate polishing.

For further making grinding device can pinpoint the position or the region that the steel pipe needs the coping when polishing, also need fix a position steel pipe itself, for this reason, still including being used for carrying out the setting element 20 of fixing a position to the steel pipe tip, setting element 20 can be the location gyro wheel, with the contact of steel pipe tip.

When the steel pipe to be polished is an ultra-long steel pipe, for example, when the length of the steel pipe is greater than 3m, the length of the polishing shaft 13 is also very long, and such a long polishing shaft 13 is easy to bend and deform in the absence of support, in this embodiment, the steel pipe inner wall fixed-point polishing device further includes a shaft roller frame 16 for supporting the polishing shaft 13, the shaft roller frame 16 is provided with a support roller 161, the polishing shaft 13 is mounted on the support roller 161 and is in rolling contact with the support roller 161, the wear of the polishing shaft 13 is small, and the design of the support roller 161 has the following advantages: the grinding shaft 13 is not easy to deform and has long service life.

As shown in fig. 2, the supporting roller 161 includes a roller body 1611 and limit blocks 1612 disposed at two ends of the roller body 1611, the limit blocks 1612 and the roller body 1611 form a limit groove 1613, and the grinding shaft 13 is limited in the limit groove 1613.

The positioning member 20 may be mounted to the axle housing 16 to minimize the use of brackets. Of course, separate mounting brackets may be used.

After the grinding head 14 is accurately positioned at a position or an area of a steel pipe to be ground, in order to enable the grinding head 14 to dig a certain range of overlaying layers around, a lifting device I17 used for controlling the motor 12 to lift is arranged on the moving trolley 11, a lifting device II 18 used for controlling the supporting roller 161 to lift is arranged on the shaft roller frame 16, and the grinding shaft 13 and the grinding head 14 on the grinding shaft 13 move along the thickness direction of the steel pipe by controlling the lifting device I17 and the lifting device II 18, so that precondition is provided for the grinding head 14 to dig a certain range of overlaying layers around.

As for the first lifting device 17 and the second lifting device 18, specifically, in one embodiment, the first lifting device 17 includes a first screw rod mechanism, the motor 12 is installed on a first screw rod table of the first screw rod mechanism, a moving direction of the first screw rod table is a vertical direction, the first screw rod in the first screw rod mechanism can be connected with a rotating handle or a servo motor, the rotating handle or the servo motor controls the first screw rod to rotate, so as to achieve lifting of the first screw rod table, the second lifting device 18 includes a second screw rod mechanism, the supporting roller 161 is arranged on a second screw rod table of the second screw rod mechanism, the moving direction of the second screw rod table is a vertical direction, the second screw rod in the second screw rod mechanism is connected with a rotating handle or a servo motor, and the rotating handle or the servo motor controls the second screw rod to rotate, so as to achieve lifting of the second screw rod table.

For the first lifting device 17 and the second lifting device 18, in another embodiment, as shown in fig. 1 and 3, the first lifting device 17 comprises a first fixed cylinder 171 with a first internal thread, a first threaded lifting rod 172 engaged with the first internal thread, and a first handle 173 disposed on the first threaded lifting rod 172; the top of the first threaded lifting rod 172 is provided with a supporting head 174 with a first connecting groove 175, the first connecting groove 175 is a rotary structure taking the central shaft of the first threaded lifting rod 172 as a central shaft, the shell of the motor 12 is connected with the motor mounting rack 19, the motor mounting rack 19 is provided with a connecting part 191 limited in the first connecting groove 175, the supporting head 174 supports the motor mounting rack 19 and the motor 12 connected with the motor mounting rack 19, the connecting part 191 is a rotary structure taking the central shaft of the first threaded lifting rod 172 as a central shaft, when the lifting device 17 needs to be lifted, on one hand, a worker holds the motor 12 and does not deflect the motor 12, so that the grinding shaft 13 cannot deflect, in this case, the connecting part 191 cannot deflect, on the other hand, the first handle 173 is rotated to rotate the first threaded lifting rod 172 to lift up or down, when the first screw lifting rod 172 rotates, the first connecting groove 175 performs a rotation motion relative to the connecting portion 191, so that the motor and the grinding shaft 13 mounted on the motor are lifted and lowered, and then the motor can be fixed by an auxiliary fixing member, for example, a plurality of fastening screws or bolts are passed through the first connecting groove 175 and the connecting portion 191 to be fixed. For the connection mode of the first handle 173 and the first threaded lifting rod 172, the first handle 173 can be fixedly connected to the first threaded lifting rod 172, and the first handle 173 and the first threaded lifting rod 172 move synchronously, in this embodiment, as shown in fig. 5, the first handle 173 has a central handle hole 1731, the central handle hole 1731 has an internal handle thread engaged with the first threaded lifting rod 172, that is, the first handle 173 and the first threaded lifting rod 172 are spirally connected, a rolling ball fixture 176 with a plurality of rolling balls 177 is arranged at the top of the first fixed cylinder 171, the rolling ball fixture 176 is in a ring structure, the upper surface of the rolling ball fixture 176 is provided with a ring-shaped groove 1761 for mounting the rolling balls 177, the rolling ball 173 is provided with an acting part 1732, the acting part 1732 is in a ring structure, the acting part 1732 is provided with a ring-shaped acting groove 17321, the ring-shaped acting groove 1761 is arranged coaxially with the rolling ball 1732, and coaxial with screw lifting rod one 172, this setting, the in-process of turning handle one 173 both exerts the revolving force, exerts the downward force again, can ensure that turning handle one 173 is pressed all the time and is rotated on spin 177, and turning handle one 173 keeps the same vertical position all the time.

As shown in fig. 1 and 4, the second lifting device 18 includes a second fixed cylinder 181 with a second internal thread fixed on the shaft roller frame 16, a second threaded lifting rod 182 engaged with the second internal thread, a second support roller mounting seat 183 connected to the second threaded lifting rod 182, and a second handle 184 disposed on the second threaded lifting rod 182, wherein the shaft of the second support roller 161 is mounted on the second support roller mounting seat 183; as shown in fig. 6, the supporting roller mounting seat 183 and the second screw lifting rod 182 are provided with a second connecting groove 1831 and a second connecting head 162, the second connecting head 162 is limited in the second connecting groove 1831, the second connecting groove 1831 is a rotary structure using the central shaft of the second screw lifting rod 182 as the central shaft, and the second connecting head 162 is a rotary structure using the central shaft of the second screw lifting rod 182 as the central shaft. When the second lifting device 18 is required to be lifted, on one hand, a worker holds the grinding shaft 13 to prevent the grinding shaft 13 from deflecting, and on the other hand, the second handle 184 is rotated to raise or lower the second screw thread lifting rod 182, wherein when the second screw thread lifting rod 182 is rotated, the second connector 162 performs a rotation motion relative to the second connecting groove 1831.

For the grinding shaft 13, it can be the rigid axle, and this embodiment, grinding shaft 13 is the flexible axle, just motor mounting bracket 19 be connected with the coaxial protection axle sleeve 21 that sets up of grinding shaft 13, grinding shaft 13 passes protection axle sleeve 21, the one end of keeping away from motor mounting bracket 19 of protection axle sleeve 21 is provided with bearing 22, grinding shaft 13 is installed on bearing 22, protection axle sleeve 21 erects on backing roll 161.

Preferably, the device also comprises an ash suction device 0 arranged at the pipe orifice of the steel pipe; inhale ash device 0 and include suction fan 01, with suction fan 01 suction pipe 02 of being connected, suction fan 01 passes through suction pipe 02 in time will polish the residue discharge steel pipe that produces, promotes coping efficiency.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.