CN111975570B

CN111975570B - Circular steel pipe butt-joint circumferential weld reinforcement grinding device

Info

Publication number: CN111975570B
Application number: CN202010895684.1A
Authority: CN
Inventors: 邹晓; 陈飞; 罗小龙; 罗文国; 肖向东; 黄仟
Original assignee: Chongqing Samhida Grinding Machine Co ltd; Dongfang Boiler Group Co Ltd
Current assignee: Chongqing Samhida Grinding Machine Co ltd; Dongfang Boiler Group Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2022-07-26
Anticipated expiration: 2040-08-31
Also published as: CN111975570A

Abstract

The invention discloses a device for grinding surplus height of a butt-joint ring weld of a circular steel pipe, which comprises a grinding host, a feeding and discharging conveying system and a dust suction system, wherein the grinding host comprises a planetary abrasive belt grinding head for installing and grinding the circular steel pipe, a clamping mechanism for clamping the circular steel pipe and a movement mechanism for driving the planetary abrasive belt grinding head to move along the axial direction of the circular steel pipe; the planet abrasive belt grinding head comprises an intermediate transmission shaft, an abrasive belt, a driving wheel, a contact wheel assembly, a tensioning assembly, a grinding head driving motor, a planet carrier driving motor and a feeding assembly, wherein the abrasive belt is sleeved on the driving wheel, the contact wheel assembly and the tensioning assembly, and the grinding head driving motor is used for driving the driving wheel to rotate and driving the abrasive belt to rotate; a through hole for the circular steel pipe to pass through is formed in the center of the middle transmission shaft, the planet carrier is sleeved outside the middle transmission shaft, the driving wheel is installed in the planet carrier, and the planet carrier driving motor is used for driving the driving wheel to rotate around the axis of the through hole; the automatic grinding of the surplus height of the butt ring weld is realized.

Description

Circular steel pipe butt-joint circumferential weld surplus height grinding device

Technical Field

The invention relates to the technical field of machine manufacturing, in particular to a device for grinding the weld reinforcement of a butt ring of a circular steel pipe.

Background

With the development of machining technology and the improvement of product processing requirements, machining develops towards an intelligent and efficient direction.

In the mechanical welding process, a large amount of various welding round steel and welding joints of steel pipes need to be polished. In the prior art, steel pipe welding joints are polished and polished in a pure manual or semi-automatic mode, manual polishing has strong dependence on experience and technology of workers, the whole polishing quality of the welding joints of round steel and steel pipes is poor, the batch polishing consistency is poor, and meanwhile, the polishing efficiency is low, the working intensity of workers is high, and the polishing cost is high.

In conclusion, how to realize full-automatic grinding and polishing of a circular steel pipe is a problem to be solved urgently by technical personnel in the field at present.

Disclosure of Invention

In view of this, the invention aims to provide a device for grinding the excess height of the circular steel pipe butt-joint circumferential weld, which realizes full automation of grinding and polishing of the excess height of the circular steel pipe butt-joint circumferential weld.

In order to achieve the above purpose, the invention provides the following technical scheme:

a circular steel pipe butt ring weld reinforcement grinding device comprises a grinding host, a feeding and discharging conveying system and a dust suction system, wherein the grinding host comprises a planetary abrasive belt grinding head, a clamping mechanism and a movement mechanism, the planetary abrasive belt grinding head is used for mounting a circular steel pipe and grinding the circular steel pipe butt ring weld reinforcement grinding, the clamping mechanism is used for clamping the circular steel pipe, and the movement mechanism drives the planetary abrasive belt grinding head to move along the axis direction of the circular steel pipe;

the planet abrasive belt grinding head comprises a middle transmission shaft, an abrasive belt, a driving wheel, a contact wheel component, a tensioning component, a grinding head driving motor, a planet carrier driving motor and a feeding component, wherein the feeding component is used for adjusting the contact wheel component and the circular steel pipe to enable the contact wheel component and the circular steel pipe to be in contact or separated;

the middle transmission shaft center is equipped with and is used for supplying the through-hole that circular steel pipe passes through, the planet carrier cup joint in outside the middle transmission shaft, the drive wheel install in the planet carrier, planet carrier driving motor is used for driving the drive wheel around the axis of through-hole rotates.

Preferably, a second synchronous pulley and a third synchronous pulley are respectively arranged at two ends of the intermediate transmission shaft, a first synchronous pulley matched with the second synchronous pulley is arranged on an output shaft of the grinding head driving motor, and a first synchronous belt is sleeved outside the first synchronous pulley and the second synchronous pulley;

and a fourth synchronous belt wheel matched with the third synchronous belt wheel is arranged at one end of the driving wheel close to the middle transmission shaft, and a second synchronous belt is sleeved outside the third synchronous belt wheel and the fourth synchronous belt wheel.

Preferably, an output shaft of the planet carrier driving motor is provided with a first chain wheel, the planet carrier is provided with a second chain wheel, and the planet carrier driving motor drives the planet carrier to rotate through chain transmission.

Preferably, the movement mechanism comprises a mounting base plate and a sliding plate for mounting the planetary belt grinding head, one of the mounting base plate and the sliding plate is provided with a sliding rail, the other one of the mounting base plate and the sliding plate is provided with a sliding block matched with the sliding rail, and the extending direction of the sliding rail is parallel to the axial direction of the circular steel pipe;

and a sliding driving assembly is arranged on the mounting base plate/the sliding plate so as to drive the sliding block and the sliding rail to slide relatively.

Preferably, the sliding driving assembly comprises a driving motor, a worm gear reducer and a crank mechanism, the crank mechanism comprises an eccentric shaft sleeved on an output shaft of the worm gear reducer and a connecting rod connected with the mounting base plate, and a free end of the connecting rod is hinged to the eccentric shaft.

Preferably, the clamping mechanism comprises a mounting seat, a clamping jaw connecting rod and a clamping cylinder connected with the clamping jaw connecting rod, the clamping jaw is mounted on the mounting seat, and the clamping jaw comprises an upper clamping jaw and a lower clamping jaw which are symmetrically arranged;

the clamping jaw connecting rod comprises an upper clamping jaw connecting rod hinged to the upper clamping jaw and a lower clamping jaw connecting rod hinged to the lower clamping jaw, and the length of the upper clamping jaw connecting rod is the same as that of the lower clamping jaw connecting rod.

Preferably, the clamping mechanisms are arranged at two ends of the planetary abrasive belt grinding head and distributed along the axis direction of the circular steel pipe.

Preferably, the feeding and discharging conveying system comprises a plurality of independent conveying units, each conveying unit comprises an unpowered unit and a power unit provided with a conveying cylinder, and the power units and the unpowered units are distributed at intervals;

the conveying units are provided with feeding and discharging turning plates, and a connecting rod is arranged between every two adjacent conveying units.

Preferably, the dust collection system comprises a dust remover for filtering air dust, a dust removal pipeline and a dust removal port, wherein the dust removal port is communicated with the dust removal pipeline, and the dust removal pipeline is communicated with an air inlet of the dust remover.

Preferably, the feeding assembly comprises a grinding feed cylinder, an auxiliary spring and a rotary air valve connected with a compressed air pipeline, an outlet of the rotary air valve is communicated with an air inlet joint of the grinding feed cylinder, one end of the auxiliary spring is connected with the planet carrier, the other end of the auxiliary spring is connected with the contact wheel assembly, and the grinding feed cylinder is mounted on the planet carrier;

during grinding, the grinding feed cylinder extends out to enable the contact wheel assembly to be attached to the round steel pipe;

after the grinding is finished, the grinding feed cylinder contracts, and the contact wheel assembly is far away from the round steel pipe under the action of the auxiliary tension spring.

When the polishing device for the surplus weld of the butt-joint ring of the round steel pipe works, the feeding and discharging conveying system feeds and discharges the round steel pipe, and after the round steel pipe is conveyed to a processing position, the round steel pipe is arranged in a through hole of a middle transmission shaft of a planetary abrasive belt grinding head and is clamped by the clamping mechanism. During grinding and polishing, the feeding assembly is adjusted to enable the contact wheel assembly to be in contact with the round steel pipe, and the abrasive belt can grind the surplus height of the butt-joint ring welding seam of the round steel pipe; the grinding head driving motor drives the driving wheel to rotate, so that the abrasive belt is driven to rotate, and the contact surface of the circular steel pipe and the abrasive belt is ground and polished; the planet carrier driving motor drives the driving wheel to rotate around the axis of the through hole, so that the abrasive belt can grind and polish the circular steel pipe in 360-degree directions, and the automatic grinding process of the surplus height of the butt-joint ring weld of the circular steel pipe is completed.

Meanwhile, in the processing process, the dust removal system is used for filtering chips, dust and the like generated in the air due to processing.

Therefore, the full-automatic feeding, grinding, polishing and discharging process is realized, the labor intensity is greatly reduced, the grinding and polishing efficiency is improved, and the grinding cost is reduced.

Meanwhile, the automatic grinding and polishing effectively ensures the grinding quality and the consistency of batch processing, and the grinding and polishing quality is obviously improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a specific embodiment of a device for grinding the weld reinforcement of a butt-joint ring of a circular steel pipe according to the present invention;

FIG. 2 is a schematic top view of the apparatus for grinding the weld reinforcement of the butt-joint ring of the circular steel pipe in FIG. 1;

fig. 3 is a schematic structural view of the planetary belt grinding head in fig. 1;

FIG. 4 is a schematic cross-sectional view of FIG. 3 in the direction A-A;

FIG. 5 is a partial cross-sectional view of the motion mechanism of FIG. 1 in a front view;

FIG. 6 is a side view schematic of FIG. 5;

FIG. 7 is a top view of FIG. 5;

FIG. 8 is a schematic view of the clamping mechanism of FIG. 1;

FIG. 9 is a schematic structural diagram of a feeding and conveying system of a specific embodiment of the apparatus for grinding the weld reinforcement of the butt-joint ring of the circular steel pipe provided by the present invention;

fig. 10 is a schematic structural view of a blanking conveying system of a specific embodiment of the apparatus for grinding the weld reinforcement of the butt-joint ring of the circular steel pipe provided by the present invention.

In fig. 1-10:

100 is a planetary abrasive belt grinding head, 101 is a support seat, 102 is an intermediate transmission shaft, 103 is a grinding head driving motor, 104 is a first synchronous belt, 105 is a second synchronous belt, 106 is a driving wheel, 107 is a contact wheel component, 108 is a tension wheel component, 109 is an abrasive belt, 110 is a planet carrier driving motor, 111 is a planet carrier, 112 is a rotary air valve, 113 is a grinding feed air cylinder, 114 is an auxiliary tension spring, 115 is a balance weight block, 200 is a motion mechanism, 201 is an installation base plate, 202 is a sliding rail, 203 is a sliding block, 204 is a sliding plate, 205 is a driving motor, 206 is a worm gear reducer, 207 is an eccentric shaft, 208 is a connecting rod, 300 is a clamping mechanism, 301 is an installation seat, 302 is a clamping jaw, 303 is a clamping jaw connecting rod, 304 is a clamping air cylinder, 400 is a conveying unit, 401 is a turning plate for loading and unloading, and 402 is a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The core of the invention is to provide a device for grinding the surplus height of the butt-joint girth weld of the circular steel pipe, which realizes the full automation of grinding and polishing the surplus height of the butt-joint girth weld of the circular steel pipe.

Please refer to fig. 1-10.

It should be noted that the feeding and discharging conveying system includes a feeding conveying system and a discharging conveying system, which are collectively called as a feeding and discharging conveying system.

The invention provides a device for grinding surplus height of a butt-joint girth weld of a circular steel pipe, which comprises a grinding host, a feeding and discharging conveying system and a dust suction system, wherein the grinding host comprises a planetary abrasive belt grinding head 100 for installing the circular steel pipe and grinding the surplus height of the butt-joint girth weld of the circular steel pipe, a clamping mechanism 300 for clamping the circular steel pipe and a movement mechanism 200 for driving the planetary abrasive belt grinding head 100 to move along the axial direction of the circular steel pipe; the planetary abrasive belt grinding head 100 comprises an intermediate transmission shaft 102, an abrasive belt 109, a driving wheel 106, a contact wheel assembly 107, a tensioning assembly, a grinding head driving motor 103, a planet carrier 111, a planet carrier driving motor 110 and a feeding assembly for adjusting the contact wheel assembly 107 and a circular steel pipe to be in contact with or separated from each other; the abrasive belt 109 is sleeved on the driving wheel 106, the contact wheel assembly 107 and the tensioning assembly, and the grinding head driving motor 103 is used for driving the driving wheel 106 to rotate so as to drive the abrasive belt 109 to rotate; the middle transmission shaft 102 is provided with a through hole in the center for the circular steel pipe to pass through, the planet carrier 111 is sleeved outside the middle transmission shaft 102, the driving wheel 106 is installed in the planet carrier 111, and the planet carrier driving motor 110 is used for driving the driving wheel 106 to rotate around the axis of the through hole.

The grinding host machine is used for grinding the surplus height of the butt-joint girth weld of the round steel pipe, wherein the grinding only comprises grinding of the surplus height of the butt-joint girth weld of the round steel pipe, and grinding and polishing of the steel pipe at the center of the circle are not included.

The grinding main machine comprises a planetary abrasive belt grinding head 100 for grinding the surplus height of the butt-joint circumferential weld of the circular steel pipe, a movement mechanism 200 for driving the planetary abrasive belt grinding head 100 to move along the axial direction of the circular steel pipe, and a clamping mechanism 300 for clamping the circular steel pipe.

Referring to fig. 3 and 4, planetary belt sander head 100 includes a support base 101, an intermediate transmission shaft 102, a sanding belt 109, a driving wheel 106, a contact wheel assembly 107, a tensioning assembly, a sanding head driving motor 103, a planet carrier 111, a planet carrier driving motor 110, and a feeding assembly, wherein the intermediate transmission shaft 102 is vertically connected to the support base 101, the planet carrier 111 is sleeved on one end of the intermediate transmission shaft 102 close to the driving wheel 106 through a bearing seat, the driving wheel 106 is mounted on the planet carrier 111 through the bearing seat, and the contact wheel assembly 107 and the tensioning assembly are mounted on the driving wheel 106.

In order to save the installation space, it is preferable that the grinding wheel head driving motor 103 and the planet carrier driving motor 110 are respectively installed on opposite side surfaces of the support base 101.

The abrasive belt 109 is sleeved on the driving wheel 106, the contact wheel assembly 107 and the tensioning assembly and is used for grinding and polishing the round steel pipe.

During operation, the tension assembly is used to maintain sanding belt 109 in tension by positioning contact wheel assembly 107 such that the surface of the contact wheel is tangent to the surface of the round steel tube.

The detailed structure of the contact roller assembly 107 and the detailed structure of the tension roller assembly 108 are not described herein with reference to the prior art.

The grinding head driving motor 103 is used for driving the driving wheel 106 to rotate, and torque can be transmitted between the driving wheel 106 and the driving wheel through chain transmission, synchronous belt transmission, gear transmission or the like.

Preferably, a second synchronous pulley and a third synchronous pulley are respectively arranged at two ends of the middle transmission shaft 102, a first synchronous pulley matched with the second synchronous pulley is arranged on an output shaft of the grinding head driving motor 103, and a first synchronous belt 104 is sleeved outside the first synchronous pulley and the second synchronous pulley; one end of the driving wheel 106 close to the middle transmission shaft 102 is provided with a fourth synchronous pulley matched with the third synchronous pulley, and a second synchronous belt 105 is sleeved outside the third synchronous pulley and the fourth synchronous pulley.

Therefore, when the grinding stone driver 103 rotates, the first synchronous pulley mounted on the output shaft of the grinding stone driver 103 rotates and drives the first synchronous belt 104 to rotate, thereby driving the second synchronous pulley to rotate, the second synchronous pulley drives the intermediate transmission shaft 102 to rotate and enables the third synchronous pulley to rotate, and simultaneously the third synchronous pulley drives the second synchronous belt 105 to rotate, thereby driving the fourth synchronous pulley to rotate with the driving wheel 106.

The transmission ratio of the first synchronous belt 104 and the transmission ratio of the second synchronous belt 105 are determined according to the requirements in actual production in combination with the rotation speed of the grinding head drive motor 103 and the like, and are not described in detail herein.

The planet carrier driving motor 110 is used for driving the driving wheel 106 to rotate around the axis of the through hole, so that the abrasive belt 109 rotates around the axis of the through hole, and the abrasive belt 109 grinds and polishes the surface of the circular steel pipe in a 360-degree position.

The planet carrier driving motor 110 drives the planet carrier 111 to rotate around the axis of the through hole, and since the driving wheel 106 is mounted on the planet carrier 111, the driving wheel 106 rotates around the axis of the through hole together with the planet carrier 111, and the contact wheel assembly 107 is connected with the driving wheel 106, the contact wheel assembly 107 rotates around the axis of the through hole.

The planet carrier driving motor 110 and the planet carrier 111 may be in belt transmission, chain transmission, gear transmission, or the like, preferably, an output shaft of the planet carrier driving motor 110 may be provided with a first chain wheel, the planet carrier 111 is provided with a second chain wheel, and the planet carrier driving motor 110 drives the planet carrier 111 to rotate through the chain transmission.

The feeding assembly is used for adjusting the position of the contact wheel assembly 107, so that the contact wheel assembly 107 is contacted with or separated from the round steel pipe. Preferably, the feeding assembly comprises a grinding feed cylinder 113, an auxiliary spring 114 and a rotary air valve 112 for connecting with a compressed air pipeline, the outlet of the rotary air valve 112 is communicated with the air inlet joint of the grinding feed cylinder 113, one end of the auxiliary spring 114 is connected with the planet carrier 111, the other end of the auxiliary spring 114 is connected with the contact wheel assembly 107, and the grinding feed cylinder 113 is mounted on the planet carrier 111; during grinding, the grinding feed cylinder 113 extends out to enable the contact wheel assembly 107 to be attached to the round steel pipe; after grinding is completed, the grinding feed cylinder 113 contracts, and the contact wheel assembly 107 is away from the round steel pipe under the action of the auxiliary tension spring 114.

During grinding, the grinding feed cylinder 113 extends out, so that the contact wheel assembly 107 is attached to the round steel pipe, and meanwhile, the auxiliary spring 114 is pulled to accumulate elastic potential energy; after grinding, the grinding feed cylinder 113 contracts, and under the action of the elastic restoring force of the auxiliary spring 114, the contact wheel assembly 107 is far away from the circle center steel pipe, so that blanking conveying is conveniently carried out on the round steel pipe.

Of course, the feeding assembly may be replaced by other structures, and for reference, the description of the prior art is omitted here for details.

Preferably, a balancing weight 115 for balancing the dead weights of the contact wheel assembly 107 and the tensioning assembly may be further provided, and the balancing weight 115 is connected with the planet carrier 111 and the contact wheel assembly 107 through a hinge.

The moving mechanism 200 is used for driving the planetary belt grinding head 100 to move along the axis direction of the circular steel pipe, and may be a linear displacement mechanism such as a linear guide rail and a lead screw.

Referring to fig. 5-7, preferably, the movement mechanism 200 may include a mounting base plate 201 and a sliding plate 204 for mounting the planetary belt sander 100, one of the mounting base plate 201 and the sliding plate 204 is provided with a sliding rail 202, the other one is provided with a sliding block 203 matched with the sliding rail 202, and the extension direction of the sliding rail 202 is parallel to the axial direction of the circular steel pipe; the mounting base plate 201/sliding plate 204 is provided with a sliding driving assembly for driving the sliding block 203 to slide relative to the sliding rail 202.

Preferably, the sliding rails 202 may be disposed at two ends of the mounting base plate 201 in the width direction, and the sliding blocks 203 are mounted at four corners of the bottom surface of the sliding plate 204.

The sliding driving component can be an electric push rod which is arranged on the mounting base plate 201 and the push rod of the electric push rod is connected with the sliding plate 204; other linear actuators having similar functions are also possible.

Preferably, the sliding driving assembly comprises a driving motor 205, a worm reducer 206 and a crank mechanism, the crank mechanism comprises an eccentric shaft 207 sleeved on an output shaft of the worm reducer 206 and a connecting rod 208 connected with the mounting base plate 201, and a free end of the connecting rod 208 is hinged with the eccentric shaft 207.

Referring to fig. 5-7, taking the sliding driving assembly as an example, when the driving motor 205 rotates, the worm reducer 206 slows down the torque output by the driving motor 205 and converts the direction of the torque to be perpendicular to the mounting base plate 201, the eccentric shaft 207 is mounted on the output shaft of the worm reducer 206, so that the eccentric shaft 207 rotates, the position of the hinge point between the eccentric shaft 207 and the connecting rod 208 relative to the sliding plate 204 changes, and the connecting rod 208 is connected to the mounting base plate 201, thereby driving the mounting base plate 201 to slide relative to the sliding plate 204.

When the grinding device works, the feeding and discharging conveying system feeds and discharges the round steel pipes, and after the round steel pipes are conveyed to the machining position, the round steel pipes are arranged in the through holes of the middle transmission shafts 102 of the planetary abrasive belt grinding heads 100 and are clamped by the clamping mechanisms 300. During grinding and polishing, the grinding head driving motor 103 drives the driving wheel 106 to rotate, so that the abrasive belt 109 is driven to rotate, and the contact surface between the circular steel pipe and the abrasive belt 109 is ground and polished; the planet carrier driving motor 110 drives the driving wheel 106 to rotate around the axis of the through hole, so that the abrasive belt 109 can grind and polish the round steel pipe in the 360-degree direction. Meanwhile, in the processing process, the dust removal system is used for filtering chips, dust and the like generated in the air due to processing.

Therefore, the circular steel pipe butt ring weld surplus height grinding device provided by the embodiment realizes full automation of the processes of feeding, grinding and polishing and discharging, greatly reduces labor intensity, improves grinding and polishing efficiency and reduces grinding cost.

Preferably, both ends of planetary abrasive belt grinding head 100 can all be provided with clamping mechanism 300, and clamping mechanism 300 distributes along the axis direction of circular steel pipe, therefore the both ends of circular steel pipe all receive the clamp force that clamping mechanism 300 provided, have avoided the round steel pipe to rock the machining error that produces in the course of working.

On the basis of the above embodiment, the structure of the clamping mechanism 300 is limited, the clamping mechanism 300 may include a mounting base 301, a clamping jaw 302, a clamping jaw connecting rod 303, and a clamping cylinder 304 connected to the clamping jaw connecting rod 303, the clamping jaw 302 is mounted on the mounting base 301, and the clamping jaw 302 includes an upper clamping jaw and a lower clamping jaw which are symmetrically arranged; the jaw connecting rod 303 comprises an upper jaw connecting rod hinged to the upper jaw and a lower jaw connecting rod hinged to the lower jaw, and the upper jaw connecting rod and the lower jaw connecting rod are the same in length.

Therefore, the upper clamping jaw connecting rod and the lower clamping jaw connecting rod are symmetrically arranged on the clamping cylinder 304, when the piston rod of the clamping cylinder 304 extends, the upper clamping jaw connecting rod and the lower clamping jaw connecting rod are far away from the clamping cylinder 304 and relatively close to the clamping jaw 302, and the upper clamping jaw and the lower clamping jaw are mutually folded to clamp the circular steel pipe; conversely, when the piston rod of the clamping cylinder 304 is shortened, the clamping cylinder 304 is close to the clamping jaw 302 and the clamping jaw is relatively far away from the clamping cylinder, the upper clamping jaw and the lower clamping jaw are separated from each other, and the circular steel pipe is released.

Of course, two clamping cylinders 304 may be provided to control the upper and lower clamping jaws, respectively, and care should be taken to adjust the two clamping cylinders 304 synchronously.

In addition, the circular steel pipe can be clamped by a mechanical arm and the like.

On the basis of the embodiment, the feeding and discharging conveying system can comprise a plurality of independent conveying units 400, wherein each conveying unit 400 comprises an unpowered unit and a power unit provided with a conveying cylinder, and the power units and the unpowered units are distributed at intervals; all be equipped with on the conveying unit 400 and go up unloading turnover 401, and be equipped with connecting rod 402 between two adjacent conveying units. Therefore, the feeding and discharging operation of the round steel pipe can be realized under the action of the conveying cylinder.

Preferably, a proximity switch may be provided at an end of the upper and lower feed system near the planetary belt grinder 100, so that the proximity switch detects a circular steel pipe and calculates a required displacement length by using an encoder, and stops outputting after the welding seam or the circular steel pipe reaches the position of the contact wheel assembly 107.

Referring to fig. 9 and 10, the upper feeding system may have 18 conveying units 400, and the interval between two adjacent conveying units 400 is 1 m; the lower feeding system may be provided with 9 conveying units 400, and the interval between two adjacent conveying units 400 is 1 m.

In addition, a conveying belt and a mechanical arm matched with the conveying belt can be used as a feeding and discharging conveying system.

On the basis of the embodiment, the dust collection system is limited and can comprise a dust remover for filtering air dust, a dust removal pipeline and a dust removal opening, wherein the dust removal opening is communicated with the dust removal pipeline, and the dust removal pipeline is communicated with an air inlet of the dust remover.

The type and specification of the vacuum cleaner should be determined according to the actual production requirements by referring to the prior art, and are not described herein again.

It should be noted that, in the present specification, the first and second timing belts 104, the first and second sprockets, and the first, second, third, and fourth ones of the first, second, third, and fourth timing pulleys are only used to distinguish the difference in position, and do not limit the sequence.

In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The device for grinding the surplus height of the circular steel pipe butt-joint girth weld provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The device for grinding the surplus height of the butt-joint girth weld of the circular steel pipe is characterized by comprising a grinding host, a feeding and discharging conveying system and a dust suction system, wherein the grinding host comprises a planetary abrasive belt grinding head (100) for installing the circular steel pipe and grinding the surplus height of the butt-joint girth weld of the circular steel pipe, a clamping mechanism (300) for clamping the circular steel pipe and a movement mechanism (200) for driving the planetary abrasive belt grinding head (100) to move along the axial direction of the circular steel pipe;

the planet abrasive belt grinding head (100) comprises a middle transmission shaft (102), an abrasive belt (109), a driving wheel (106), a contact wheel assembly (107), a tensioning assembly, a grinding head driving motor (103), a planet carrier (111), a planet carrier driving motor (110) and a feeding assembly for adjusting the contact wheel assembly (107) and the circular steel pipe to enable the contact wheel assembly and the circular steel pipe to be contacted or separated, the abrasive belt (109) is sleeved on the driving wheel (106), the contact wheel assembly (107) and the tensioning assembly, and the grinding head driving motor (103) is used for driving the driving wheel (106) to rotate so as to drive the abrasive belt (109) to rotate;

the middle transmission shaft (102) center is equipped with and is used for supplying the through-hole that circular steel pipe passed through, planet carrier (111) cup joint outside middle transmission shaft (102), drive wheel (106) install in planet carrier (111), planet carrier driving motor (110) are used for driving drive wheel (106) rotate around the axis of through-hole.

2. The device for grinding the surplus height of the butt-joint girth weld of the round steel pipe according to claim 1, wherein a second synchronous pulley and a third synchronous pulley are respectively arranged at two ends of the middle transmission shaft (102), a first synchronous pulley matched with the second synchronous pulley is arranged on an output shaft of the grinding head driving motor (103), and a first synchronous belt (104) is sleeved outside the first synchronous pulley and the second synchronous pulley;

one end of the driving wheel (106) close to the middle transmission shaft (102) is provided with a fourth synchronous belt wheel matched with the third synchronous belt wheel, and a second synchronous belt (105) is sleeved outside the third synchronous belt wheel and the fourth synchronous belt wheel.

3. The device for grinding the surplus height of the butt-joint girth weld of the circular steel pipe according to claim 1, wherein a first chain wheel is arranged on an output shaft of the planet carrier driving motor (110), a second chain wheel is arranged on the planet carrier (111), and the planet carrier driving motor (110) drives the planet carrier (111) to rotate through chain transmission.

4. The device for grinding the surplus height of the butt-joint girth weld of the circular steel pipe according to claim 1, wherein the motion mechanism (200) comprises a mounting base plate (201) and a sliding plate (204) for mounting the planetary belt grinding head (100), one of the mounting base plate (201) and the sliding plate (204) is provided with a sliding rail (202), the other one of the mounting base plate (201) and the sliding plate (204) is provided with a sliding block (203) matched with the sliding rail (202), and the extension direction of the sliding rail (202) is parallel to the axial direction of the circular steel pipe;

a sliding driving component is arranged on the mounting base plate (201)/the sliding plate (204) so as to drive the sliding block (203) and the sliding rail (202) to slide relatively.

5. The device for grinding the weld reinforcement of the butt ring of the circular steel pipe according to claim 4, wherein the sliding driving assembly comprises a driving motor (205), a worm gear reducer (206) and a crank mechanism, the crank mechanism comprises an eccentric shaft (207) sleeved on an output shaft of the worm gear reducer (206) and a connecting rod (208) connected with the mounting base plate (201), and a free end of the connecting rod (208) is hinged with the eccentric shaft (207).

6. The device for grinding the weld reinforcement of the butt ring of the circular steel pipe according to any one of claims 1 to 5, wherein the clamping mechanism (300) comprises a mounting seat (301), a clamping jaw (302), a clamping jaw connecting rod (303) and a clamping cylinder (304) connected with the clamping jaw connecting rod (303), the clamping jaw (302) is mounted on the mounting seat (301), and the clamping jaw (302) comprises an upper clamping jaw and a lower clamping jaw which are symmetrically arranged;

the clamping jaw connecting rod (303) comprises an upper clamping jaw connecting rod hinged to the upper clamping jaw and a lower clamping jaw connecting rod hinged to the lower clamping jaw, and the lengths of the upper clamping jaw connecting rod and the lower clamping jaw connecting rod are the same.

7. The round steel pipe butt ring weld reinforcement grinding device according to claim 6, wherein the clamping mechanisms (300) are arranged at both ends of the planetary belt grinding head (100), and the clamping mechanisms (300) are distributed along the axial direction of the round steel pipe.

8. The device for grinding the surplus weld of the butt ring of the round steel pipe according to any one of claims 1 to 5, wherein the feeding and discharging conveying system comprises a plurality of independent conveying units (400), the conveying units (400) comprise unpowered units and power units provided with conveying cylinders, and the power units and the unpowered units are distributed at intervals;

all be equipped with on conveying unit (400) and go up unloading and turn over board (401), and adjacent two conveying unit (400) are equipped with connecting rod (402) within a definite time.

9. The device for grinding the surplus height of the butt ring weld of the circular steel pipe according to any one of claims 1 to 5, wherein the dust collection system comprises a dust collector for filtering air dust, a dust collection pipeline and a dust collection port, the dust collection port is communicated with the dust collection pipeline, and the dust collection pipeline is communicated with an air inlet of the dust collector.

10. The circular steel pipe butt ring weld surplus height grinding device according to any one of claims 1 to 5, wherein the feeding assembly comprises a grinding feed cylinder (113), an auxiliary spring (114) and a rotary air valve (112) connected with a compressed air pipeline, an outlet of the rotary air valve (112) is communicated with an air inlet joint of the grinding feed cylinder (113), one end of the auxiliary spring (114) is connected with the planet carrier (111), the other end of the auxiliary spring is connected with the contact wheel assembly (107), and the grinding feed cylinder (113) is mounted on the planet carrier (111);

during grinding, the grinding feed cylinder (113) extends out to enable the contact wheel assembly (107) to be attached to the round steel pipe;

after grinding is finished, the grinding feed air cylinder (113) contracts, and the contact wheel assembly (107) is far away from the round steel pipe under the action of the auxiliary spring (114).