A contact network annular steel pipe column weld grinding equipment

Abstract

The present invention discloses a contact network annular steel pipe column weld grinding device, comprising two tracks, a main machine linkage mechanism and a steel pipe column support mechanism including a large end roller mechanism and a small end roller mechanism capable of keeping the steel pipe column weld in a horizontal position; the main machine linkage mechanism comprises a base, a left and right walking mechanism, a vertical frame, two vertical linear guide rails I and a slider I, a power mechanism for driving the slider I to rise and fall along the vertical linear guide rail I, a base III fixed on the side of the slider I, a grinding mechanism, and a polishing mechanism; the grinding mechanism and the polishing mechanism can be installed on the base III with fine adjustment up and down and front and back; the machine base I can be fixed on the base IV with an adjustable tilt angle, the base V can be fixed on the base III with fine adjustment in height and front and back, and the machine base II can be fixed on the base V with an adjustable tilt angle. The present invention performs grinding and polishing synchronously, the weld is automatically aligned, the production efficiency is high, the labor intensity of the operator is low, it is safe, and the grinding and polishing quality is good.

Description

Technical Field

[0001] The invention belongs to the field of manufacturing annular steel pipe columns for contact networks, and relates to a welding seam grinding device for annular steel pipe columns for contact networks. Background Art

[0002] At present, the material of the circular steel pipe column of the electrified railway contact network in my country is generally steel plate, and the main steel pipe is generally processed and formed by: bending with a bending machine → closing with a closing machine → welding with an automatic submerged arc welding machine → welding seam grinding, etc. After welding, there are one or two longitudinal welds on the column body of the steel pipe column, and there are a small amount of welding spatter around the weld. The longitudinal weld and its surrounding area need to be ground and polished. At present, the grinding method generally uses a trolley grinder to grind, and then the weld is polished and trimmed with a trolley polisher after it is basically qualified. This weld processing method is first ground and then polished, with low production efficiency, high labor intensity for operators, and difficult to ensure safety. It relies on manual positioning, requires high technical level of operators, and the quality of grinding and polishing is uneven. With the increasing market requirements for the appearance quality of contact network pillars, the existing trolley grinders and trolley polishers can no longer meet the requirements. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art and to provide a contact network annular steel pipe column weld grinding equipment with simultaneous grinding and polishing operations, automatic weld alignment, high production efficiency, low labor intensity for operators, safety, and good grinding and polishing quality.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a contact network annular steel pipe column weld grinding device, comprising two tracks, a main engine linkage mechanism and a steel pipe column support mechanism including a large end roller mechanism and a small end roller mechanism capable of keeping the steel pipe column weld in a horizontal position;

[0005] The large-end roller mechanism comprises a base I, two large-end rollers, a motor I and a shift plate; a large-end support position of a steel pipe column is formed between the two large-end rollers; both ends of each large-end roller are rotatably fixed on the base I through a bearing seat, and the output shaft of the motor I fixed on the base I is rigidly connected to the main shaft of one of the large-end rollers through a coupling; the shift plate is fixed to the rear end of the base I and is located at the center of the large-end support position of the steel pipe column;

[0006] The small-end roller mechanism comprises a base II, two small-end rollers, a support base and a roller lifting mechanism; a small-end support position of a steel pipe column is formed between the two small-end rollers; both ends of each small-end roller are rotatably fixed on the base II through a bearing seat; the base II is liftable and fixedly connected to the support base through the roller lifting mechanism;

[0007] The main machine linkage mechanism includes a base, a left and right walking mechanism that drives the base to run along two tracks, a vertical frame fixed to the upper end surface of the base, two vertical linear guide rails Ⅰ and a slider Ⅰ symmetrically arranged on the side of the vertical frame, a power mechanism that drives the slider Ⅰ to rise and fall along the vertical linear guide rail Ⅰ, a base Ⅲ fixed to the side of the slider Ⅰ, a grinding mechanism, and a polishing mechanism; the grinding mechanism and the polishing mechanism can be installed on the base Ⅲ for fine adjustment up and down and front and back; the grinding mechanism includes a grinding wheel, a grinding motor, a tensioning wheel, a grinding belt, a base Ⅳ and a machine base Ⅰ; the base Ⅳ can be fine-tuned in height and fixed on the base Ⅲ front and back; the machine base Ⅰ can be fixed on the base Ⅳ with an adjustable inclination angle; the grinding motor The machine is fixed on the machine base I, the grinding wheel and the tensioning wheel are hinged and fixed on the machine base I through the grinding wheel shaft and the tensioning wheel shaft respectively, and the output wheel of the grinding motor, the grinding wheel and the tensioning wheel are connected together through the grinding belt; the polishing mechanism includes a polishing wheel, a polishing motor, a transmission belt, a base V and a machine base II, the base V can be fine-tuned in height and fixed on the base III front and back, the machine base II can be fixed on the base V with an adjustable inclination angle, the polishing motor is fixed on the machine base II, the polishing wheel shaft is hinged on the machine base II, and the polishing wheel and the intermediate wheel are fixed at both ends respectively, and the output wheel and the intermediate wheel of the polishing motor are connected together through the transmission belt; the working positions of the grinding mechanism and the polishing mechanism are in the same horizontal plane.

[0008] Further preferably, the roller lifting mechanism includes two sets of guide sleeves and guide shafts, two sets of vertically arranged screws I and nut I, wherein the two guide sleeves are symmetrically fixed on both sides of one end of the base II, the lower ends of the two guide shafts are fixed on the upper end surface of the support base, the two nut I are symmetrically fixed on both sides of the other end of the base II, and the lower ends of the two screws I are rotatably fixed on the upper end surface of the support base or directly connected to the upper end surface of the support base. The rotation of the screw I can drive the base II to rise or fall, with a simple structure and convenient operation.

[0009] Further preferably, the left and right walking mechanism that drives the base to run along the track includes two groups of four rollers or sliders II, a servo reduction motor, gears, and racks connected to the lower end of the base; if it is a roller, the two rollers on the left and the two rollers on the right are respectively hinged on the roller shaft, and the roller shaft is fixed to the lower end surface of the base; if it is a slider II, the four sliders II are directly fixed to the lower end surface of the base; the roller is placed on the track, and the slider II is clamped on the track; the rack is fixed on the side of the track close to the large and small end roller mechanisms, and the gear used in conjunction with the rack is fixed on the output shaft of the servo reduction motor; the servo reduction motor is driven to rotate by the frequency converter. In this way, the servo reduction motor is adjusted by the frequency converter to adjust the speed of travel, so as to achieve the effect of stepless speed change, and finally realize the track horizontal walking work with a maximum stroke of 12 meters, which can meet the grinding and polishing of steel pipe column welds of various lengths.

[0010] Further preferably, the power mechanism that drives the slider I to rise and fall along the vertical linear guide rail I includes two vertically arranged screws II, a nut II and a motor I used in conjunction with the screw II; the screw II and the nut II are located between the two vertical linear guide rails I, the upper end of the screw II is rigidly connected to the output shaft of the motor I, the nut II is fixed to the rear end of the slider I, and the motor I is fixed to the upper end surface of the vertical frame. The rotation of the motor I drives the screw II to rotate, and the nut II drives the slider I to rise and fall. The power mechanism has a simple structure and is reliable; cylinders, hydraulic cylinders, etc. can also be used.

[0011] Further preferably, the structure of the base IV that can fine-tune the height and is fixed on the base III front and back is: the base IV is clamped on the horizontal linear guide rail I fixed on the middle plate I through two sliders III fixed thereon; the middle plate I is clamped on the vertical linear guide rail II fixed on one side of the base III through two sliders IV fixed thereon; the vertically arranged lead screw III, the nut III used in conjunction with the lead screw III and the motor II are arranged in the cavity of the base III, the nut III is fixed on the middle plate I, the lead screw III is fixed on the base III, and the upper ends thereof are rigidly connected to the output shaft of the motor II; the horizontally arranged lead screw IV, the nut IV used in conjunction with the lead screw IV and the motor III are arranged in the cavity of the base IV, the nut IV is fixed on the middle plate I, the lead screw IV is fixed on the wall of the base IV, and the upper ends thereof are rigidly connected to the output shaft of the motor III. The motor II drives the lead screw III to rotate, and the screw nut III drives the middle plate I to move up and down, thereby driving the base IV to be fine-tuned up and down, thereby driving the grinding mechanism to be fine-tuned up and down; the screw nut IV fixed on the middle plate I does not move, and the motor III drives the lead screw IV to rotate, and the screw IV pushes the base IV to be fine-tuned forward and backward, thereby driving the grinding mechanism to be fine-tuned forward and backward. This structure is simple and reliable; you can also choose to use a cylinder, but it is large in size and not easy to wire.

[0012] Further preferably, the structure of the base V that can fine-tune the height and is fixed on the base III front and back is: the base V is clamped on the horizontal linear guide rail II fixed on the middle plate II through two sliders V fixed thereon; the middle plate II is clamped on the vertical linear guide rail III fixed on the other side of the base III through two sliders V fixed thereon; the vertically arranged lead screw IV, the nut IV used in conjunction with the lead screw IV and the motor IV are arranged in the cavity of the base III, the nut IV is fixed on the middle plate II, the lead screw IV is fixed on the base III, and the upper ends thereof are rigidly connected to the output shaft of the motor IV; the horizontally arranged lead screw V, the nut V used in conjunction with the lead screw V and the motor V are arranged in the cavity of the base V, the nut V is fixed on the middle plate II, the lead screw V is fixed on the wall of the base V, and the upper ends thereof are rigidly connected to the output shaft of the motor V. The motor IV drives the lead screw IV to rotate, and the screw nut IV drives the middle plate II to move up and down, thereby driving the base V to be fine-tuned up and down, thereby driving the polishing mechanism to be fine-tuned up and down; the screw nut V fixed on the middle plate II does not move, and the motor V drives the lead screw V to rotate, and the screw V pushes the base V to be fine-tuned forward and backward, thereby driving the polishing mechanism to be fine-tuned forward and backward. This structure is simple and reliable; you can also choose to use a cylinder, but it is large in size and not easy to wire.

[0013] Further preferably, the structure in which the machine base I is fixed on the base IV with an adjustable tilt angle is as follows: the middle of the lower end surface of the machine base I is fixed on the pin shaft I, and the end thereof away from the polishing wheel is vertically fixed on the long bolt I; the two ends of the pin shaft I are hinged on the base IV through the bearing seat; the long bolt I is threadedly connected to the inclined panel I with an inclination angle of 45° protruding from the front end of the base IV, and a preload spring I is passed through the long bolt I at the lower end of the inclined panel I, and a spring baffle I is fixed at the end of the long bolt I, and the preload spring I is clamped between the spring baffle I and the inclined panel I. By screwing the long bolt I, the tilt angle of the machine base I can be adjusted, thereby adjusting the angle required for the grinding wheel to feed, and the preload spring I is compressed to adjust the pressure on the workpiece steel pipe column.

[0014] Further preferably, the structure in which the base II is fixed on the base V with an adjustable tilt angle is as follows: the middle of the lower end surface of the base II is fixed on the pin II, and the end thereof away from the polishing wheel is vertically fixed on the long bolt II; both ends of the pin II are hinged on the base IV through the bearing seat; the long bolt II is threadedly connected to the inclined panel II with an inclination angle of 45° protruding from the front end of the base IV. By screwing the long bolt II, the tilt angle of the base II can be adjusted, thereby adjusting the angle required for the polishing wheel to feed.

[0015] The grinding wheel and polishing wheel of the present invention can be adjusted up and down and left and right, and the feed angle can be adjusted. The main machine linkage mechanism can move along two tracks. The positions of the large-end roller mechanism and the small-end roller mechanism are adjustable. The large-end roller mechanism can rotate the steel pipe column, and the small-end roller mechanism can adjust the height. The weld is automatically aligned to achieve precise positioning of the steel pipe column and the grinding wheel and polishing wheel, thereby ensuring the quality of grinding and polishing, and achieving the grinding and polishing of steel pipe column welds of various lengths, tapers, and diameters. The grinding and polishing machine of the present invention works synchronously, and its operating efficiency is doubled compared to manual operation; and the structural design is simple and reasonable, and has the characteristics of impact resistance and high load-bearing capacity. It is suitable for grinding and polishing of all types of contact network steel pipe column welds. In short, the present invention has high production efficiency, low labor intensity for operators, safety, and good grinding and polishing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the host linkage mechanism in the present invention as viewed from the front;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the host linkage mechanism in the present invention after removing the vertical frame as viewed from the back;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the large-end roller mechanism in the present invention;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the small-end roller mechanism of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 5 As shown, this embodiment includes two rails 7, a main engine linkage mechanism 1, and a steel pipe column supporting mechanism including a large-end roller mechanism 2 and a small-end roller mechanism 3 that can keep the weld of the steel pipe column 6 in a horizontal position.

[0023] The large end roller mechanism 2 includes a base Ⅰ201, two large end rollers 202 and 204, a motor Ⅰ205 and a shift plate 203. A large end support position of a steel pipe column is formed between the two large end rollers 202 and 204. Both ends of the large end rollers 202 and 204 are rotatably fixed on the base Ⅰ201 through bearing seats 206, and the output shaft of the motor Ⅰ205 fixed on the base Ⅰ201 is rigidly connected to the main shaft of one of the large end rollers 204 through a coupling. The shift plate 203 is fixed to the rear end of the base Ⅰ201 and is located at the center of the large end support position of the steel pipe column. It is used to limit the position of the steel pipe column 6.

[0024] The small end roller mechanism 3 comprises a base II 309, two small end rollers 305 and 306, a support base 301 and a roller lifting mechanism. A small end support position of the steel pipe column is formed between the two small end rollers 305 and 306. Both ends of each small end roller 305 and 306 are rotatably fixed on the base II 309 through a bearing seat 302; the base II 309 is connected to the support base 301 in a liftable and fixed manner through the roller lifting mechanism. Preferably, the roller lifting mechanism includes two groups of guide sleeves 304 and guide shafts 303, two groups of vertically arranged screws I 307 and nuts I 308, wherein the two guide sleeves 304 are symmetrically fixed on both sides of the left end of the base II 309, the lower ends of the two guide shafts 303 are fixed on the upper end surface of the support base 301, and the two nuts I 308 are symmetrically fixed on both sides of the right end of the base II 309, and the lower ends of the two screws I 307 are rotatably fixed on the upper end surface of the support base 301 by bearings or copper sleeves or are directly connected to the upper end surface of the support base 301.

[0025] The main engine linkage mechanism 1 includes a base 105, a left and right walking mechanism that drives the base 105 to run along two tracks 7, a vertical frame 9 welded and fixed to the upper end surface of the base 105, two vertical linear guide rails Ⅰ11 and a slider Ⅰ13 symmetrically arranged on the side of the vertical frame 9, a power mechanism that drives the slider Ⅰ13 to rise and fall along the vertical linear guide rail Ⅰ11, a base Ⅲ129 fixed to the side of the slider Ⅰ13, a grinding mechanism and a polishing mechanism. Preferably, the left and right walking mechanism driving the base 105 to run along the track 7 includes two groups of four rollers 108 (or sliders II, in the case of sliders II, four sliders II are directly fixed on the lower end surface of the base 105, and the sliders II are clamped on the track 7) connected to the lower end of the base 105, a servo reduction motor 111 and a gear 110, and a rack 5; the two rollers 108 on the left and the two rollers 108 on the right are respectively hinged on the roller shaft 107, and the roller shaft 107 is fixed on the lower end surface of the base 105; the rollers 108 are placed on the track 7; the rack 5 is fixed on the side of the track close to the large and small end roller mechanisms, and the gear used in conjunction with the rack 5 is fixed on the output shaft of the servo reduction motor; the servo reduction motor 111 is driven to rotate by the frequency converter. The grinding mechanism and the polishing mechanism can be installed on the base III 129 for fine adjustment up and down and front and back. The grinding mechanism includes a grinding wheel 116, a grinding motor 126, a tensioning wheel 118, a grinding belt 115, a base IV109 and a machine base I127. The base IV109 can be fine-tuned in height and fixed on the base III129 front and back. The machine base I127 can be fixed on the base IV109 with an adjustable inclination angle. The grinding motor 126 is fixed on the machine base I127. The grinding wheel 116 and the tensioning wheel 118 are hingedly fixed on the machine base I127 through a grinding wheel shaft and a tensioning wheel shaft respectively. The output wheel 117 of the grinding motor 126, the grinding wheel 116 and the tensioning wheel 118 are connected together through the grinding belt 115. The grinding wheel 116 of this embodiment is a rubber friction sleeve wheel with friction grooves on the wheel surface, and the grinding belt 115 is a friction belt. The polishing mechanism includes a polishing wheel 120, a polishing motor 123, a transmission belt, a base V119 and a machine base II122. The base V119 can be finely adjusted in height and fixed on the base III129 in a forward and backward manner. The machine base II122 can be fixed on the base V119 in an adjustable tilt angle. The polishing motor 123 is fixed on the machine base II122. The polishing wheel shaft is hinged on the machine base II122, and the polishing wheel 120 and the intermediate wheel are fixed at both ends. The output wheel and the intermediate wheel of the polishing motor 123 are connected together through a transmission belt. The working positions of the grinding mechanism and the polishing mechanism are on the same horizontal plane.

[0026] Preferably, the power mechanism for driving the slider Ⅰ13 to rise and fall along the vertical linear guide rail Ⅰ11 includes two vertically arranged lead screws Ⅱ12, a nut Ⅱ and a motor Ⅰ8 used in conjunction with the lead screw Ⅱ12. The lead screw Ⅱ12 and the nut Ⅱ are located between the two vertical linear guide rails Ⅰ11, the upper end of the lead screw Ⅱ12 is rigidly connected to the output shaft of the motor Ⅰ8, the nut Ⅱ is fixed to the rear end of the slider Ⅰ13, and the motor Ⅰ8 is fixed to the upper end surface of the vertical frame 9.

[0027] Preferably, the structure in which the base IV109 can be finely adjusted in height and fixed on the base III129 in a forward and backward manner is that the base IV109 is clamped on the horizontal linear guide rail I fixed on the middle plate I through two sliders III fixed thereon. The middle plate I is clamped on the vertical linear guide rail II fixed on one side of the base III129 through two sliders IV fixed thereon. The vertically arranged lead screw III, the nut III used in conjunction with the lead screw III and the motor II101 are arranged in the cavity of the base III129, the nut III is fixed on the middle plate I, the lead screw III is fixed on the base III129, and the upper end thereof is rigidly connected to the output shaft of the motor II101. The horizontally arranged lead screw IV103, the nut IV106 used in conjunction with the lead screw IV103 and the motor III104 are arranged in the cavity of the base IV109, the nut IV106 is fixed on the middle plate I, the lead screw IV103 is fixed on the wall of the base IV109, and the upper end thereof is rigidly connected to the output shaft of the motor III104.

[0028] Preferably, the structure in which the base V119 can be finely adjusted in height and fixed on the base III129 in the front and rear directions is as follows: the base V119 is clamped on the horizontal linear guide rail II fixed on the intermediate plate II130 through two sliders V fixed thereon. The intermediate plate II130 is clamped on the vertical linear guide rail III131 fixed on the other side of the base III129 through two sliders V131 fixed thereon. The vertically arranged lead screw IV, the nut IV used in conjunction with the lead screw IV, and the motor IV132 are arranged in the cavity of the base III129, the nut IV is fixed on the intermediate plate II130, the lead screw IV is fixed on the base III129, and its upper end is rigidly connected to the output shaft of the motor IV132. The horizontally arranged lead screw V136, the nut V135 used in conjunction with the lead screw V136 and the motor V134 are arranged in the cavity of the base V119, the nut V135 is fixed on the intermediate plate II130, the lead screw V136 is fixed on the wall of the base V119, and its upper end is rigidly connected to the output shaft of the motor V134.

[0029] Preferably, the structure in which the base Ⅰ127 is fixed on the base Ⅳ109 with an adjustable tilt angle is as follows: the middle of the lower end surface of the base Ⅰ127 is fixed on the pin shaft Ⅰ, and the end thereof away from the polishing wheel 120 is vertically fixed on the long bolt Ⅰ128. The two ends of the pin shaft Ⅰ are hinged on the base Ⅳ109 through the bearing seat 114. The long bolt Ⅰ128 is threadedly connected to the inclined panel Ⅰ113 with an inclination angle of 45° protruding from the front end of the base Ⅳ109, and a preload spring Ⅰ102 is passed through the long bolt Ⅰ128 at the lower end of the inclined panel Ⅰ113, and a spring baffle Ⅰ112 is fixed at the end of the long bolt Ⅰ128, and the preload spring Ⅰ102 is clamped between the spring baffle Ⅰ112 and the inclined panel Ⅰ113.

[0030] Preferably, the structure in which the base II 122 is fixed on the base V 119 with an adjustable tilt angle is as follows: the middle of the lower end surface of the base II 122 is fixed on the pin II, and the end thereof away from the polishing wheel 120 is vertically fixed on the long bolt II 124. Both ends of the pin II are hinged on the base V 119 through the bearing seat 121. The long bolt II 124 is threadedly connected to the inclined panel II 125 with an inclination angle of 45° protruding from the front end of the base V 119.

[0031] The above embodiments are only preferred and exemplary. Those skilled in the art can make equivalent technical improvements based on the description of this patent, which are all within the protection scope of this patent.

Claims

1. A contact network annular steel pipe column weld grinding equipment, characterized in that: It includes two rails, a main engine linkage mechanism, and a steel pipe column supporting mechanism including a large end roller mechanism and a small end roller mechanism capable of keeping the weld of the steel pipe column in a horizontal position; The large-end roller mechanism comprises a base Ⅰ, two large-end rollers, a motor Ⅰ and a shift plate; a large-end support position of a steel pipe column is formed between the two large-end rollers; Both ends of each large end roller are rotatably fixed on the base I through bearing seats, and the output shaft of the motor I fixed on the base I is rigidly connected to the main shaft of one of the large end rollers through a coupling; the stop plate is fixed on the rear end of the base I and is located at the center of the large end support position of the steel pipe column; The small-end roller mechanism comprises a base II, two small-end rollers, a support base and a roller lifting mechanism; a small-end support position of a steel pipe column is formed between the two small-end rollers; both ends of each small-end roller are rotatably fixed on the base II through a bearing seat; the base II is liftable and fixedly connected to the support base through the roller lifting mechanism; The main machine linkage mechanism includes a base, a left and right walking mechanism that drives the base to run along two tracks, a vertical frame fixed to the upper end surface of the base, two vertical linear guide rails Ⅰ and a slider Ⅰ symmetrically arranged on the side of the vertical frame, a power mechanism that drives the slider Ⅰ to rise and fall along the vertical linear guide rail Ⅰ, a base Ⅲ fixed to the side of the slider Ⅰ, a grinding mechanism, and a polishing mechanism; the grinding mechanism and the polishing mechanism can be installed on the base Ⅲ for fine adjustment up and down and front and back; the grinding mechanism includes a grinding wheel, a grinding motor, a tensioning wheel, a grinding belt, a base Ⅳ and a machine base Ⅰ; the base Ⅳ can be fine-tuned in height and fixed on the base Ⅲ front and back; the machine base Ⅰ can be fixed on the base Ⅳ with an adjustable inclination angle; the grinding motor The machine is fixed on the machine base I, the grinding wheel and the tensioning wheel are respectively hinged and fixed on the machine base I through the grinding wheel shaft and the tensioning wheel shaft, and the output wheel of the grinding motor, the grinding wheel and the tensioning wheel are connected together through the grinding belt; the polishing mechanism includes a polishing wheel, a polishing motor, a transmission belt, a base V and a machine base II, the base V can be fine-tuned in height and fixed on the base III in front and back, the machine base II can be fixed on the base V in an adjustable tilt angle, the polishing motor is fixed on the machine base II, the polishing wheel shaft is hinged on the machine base II, and the polishing wheel and the intermediate wheel are respectively fixed at both ends, and the output wheel and the intermediate wheel of the polishing motor are connected together through the transmission belt; the working positions of the grinding mechanism and the polishing mechanism are on the same horizontal plane; The structure of the base IV being able to fine-tune the height and being fixed on the base III in a forward and backward manner is as follows: the base IV is clamped on the horizontal linear guide rail I fixed on the intermediate plate I through two sliders III fixed thereon; the intermediate plate I is clamped on the vertical linear guide rail II fixed on one side of the base III through two sliders IV fixed thereon; the vertically arranged lead screw III, the nut III used in conjunction with the lead screw III and the motor II are arranged in the cavity of the base III, the nut III is fixed on the intermediate plate I, the lead screw III is fixed on the base III, and the upper end thereof is rigidly connected to the output shaft of the motor II; the horizontally arranged lead screw IV, the nut IV used in conjunction with the lead screw IV and the motor III are arranged in the cavity of the base IV, the nut IV is fixed on the intermediate plate I, the lead screw IV is fixed on the wall of the base IV, and the upper end thereof is rigidly connected to the output shaft of the motor III; The structure of the base V that can fine-tune the height and be fixed on the base III front and back is: the base V is clamped on the horizontal linear guide rail II fixed on the middle plate II through two sliders V fixed thereon; the middle plate II is clamped on the vertical linear guide rail III fixed on the other side of the base III through two sliders V fixed thereon; the vertically arranged lead screw IV, the nut IV used in conjunction with the lead screw IV and the motor IV are arranged in the cavity of the base III, the nut IV is fixed on the middle plate II, the lead screw IV is fixed on the base III, and the upper end thereof is rigidly connected to the output shaft of the motor IV; the horizontally arranged lead screw V, the nut V used in conjunction with the lead screw V and the motor V are arranged in the cavity of the base V, the nut V is fixed on the middle plate II, the lead screw V is fixed on the wall of the base V, and the upper end thereof is rigidly connected to the output shaft of the motor V.

2. The contact network annular steel pipe column weld grinding equipment according to claim 1 is characterized in that: The structure of the machine base I fixed on the base IV with an adjustable tilt angle is: the middle part of the lower end surface of the machine base I is fixed on the pin shaft I, and its end away from the polishing wheel is vertically fixed on the long bolt I; the two ends of the pin shaft I are hinged on the base IV through the bearing seat; the long bolt I is threadedly connected to the inclined panel I with an inclination angle of 45° protruding from the front end of the base IV, and a pre-tightening spring I is passed through the long bolt I at the lower end of the inclined panel I, and a spring baffle I is fixed at the end of the long bolt I, and the pre-tightening spring I is clamped between the spring baffle I and the inclined panel I.

3. The contact network annular steel pipe column weld grinding equipment according to claim 1 or 2, characterized in that: The middle part of the lower end face of the machine base II is fixed on the pin shaft II, and the end thereof away from the polishing wheel is vertically fixed on the long bolt II; both ends of the pin shaft II are hinged on the base IV through the bearing seat; the long bolt II is threadedly connected to the inclined panel II with an inclination angle of 45° protruding from the front end of the base IV.

4. The contact network annular steel pipe column weld grinding equipment according to claim 3 is characterized in that: The left and right walking mechanism that drives the base to run along the track includes two groups of four rollers or sliders II, a servo reduction motor, gears and racks connected to the lower end of the base; if it is a roller, the two rollers on the left and the two rollers on the right are respectively hinged on the roller shaft, the roller shaft is fixed on the lower end surface of the base, and the rollers are placed on the track; if it is a slider II, four sliders II are directly fixed on the lower end surface of the base, and the slider II is clamped on the track; the rack is fixed on the side of the track close to the large and small end roller mechanisms, and the gear used in conjunction with the rack is fixed on the output shaft of the servo reduction motor; the servo reduction motor is driven to rotate by the frequency converter.

5. The contact network annular steel pipe column weld grinding equipment according to claim 4 is characterized in that: The roller lifting mechanism includes two groups of guide sleeves and guide shafts, two groups of vertically arranged screws I and nuts I, wherein the two guide sleeves are symmetrically fixed on both sides of one end of the base II, the lower ends of the two guide shafts are fixed on the upper end surface of the support base, the two nuts I are symmetrically fixed on both sides of the other end of the base II, and the lower ends of the two screws I are rotatably fixed on the upper end surface of the support base or directly connected to the upper end surface of the support base.

6. The contact network annular steel pipe column weld grinding equipment according to claim 5, characterized in that: The power mechanism that drives the slider I to rise and fall along the vertical linear guide rail I includes two vertically arranged screws II, a nut II and a motor I used in conjunction with the screw II; the screw II and the nut II are located between the two vertical linear guide rails I, the upper end of the screw II is rigidly connected to the output shaft of the motor I, the nut II is fixed to the rear end of the slider I, and the motor I is fixed to the upper end surface of the vertical frame.

7. The contact network annular steel pipe column weld grinding equipment according to claim 1 or 2, characterized in that: The left and right walking mechanism that drives the base to run along the track includes two groups of four rollers or sliders II, a servo reduction motor, gears and racks connected to the lower end of the base; if it is a roller, the two rollers on the left and the two rollers on the right are respectively hinged on the roller shaft, the roller shaft is fixed on the lower end surface of the base, and the rollers are placed on the track; if it is a slider II, four sliders II are directly fixed on the lower end surface of the base, and the slider II is clamped on the track; the rack is fixed on the side of the track close to the large and small end roller mechanisms, and the gear used in conjunction with the rack is fixed on the output shaft of the servo reduction motor; the servo reduction motor is driven to rotate by the frequency converter.

8. The contact network annular steel pipe column weld grinding equipment according to claim 7, characterized in that: The roller lifting mechanism includes two groups of guide sleeves and guide shafts, two groups of vertically arranged screws I and nuts I, wherein the two guide sleeves are symmetrically fixed on both sides of one end of the base II, the lower ends of the two guide shafts are fixed on the upper end surface of the support base, the two nuts I are symmetrically fixed on both sides of the other end of the base II, and the lower ends of the two screws I are rotatably fixed on the upper end surface of the support base or directly connected to the upper end surface of the support base.

9. The contact network annular steel pipe column weld grinding equipment according to claim 8, characterized in that: The power mechanism that drives the slider I to rise and fall along the vertical linear guide rail I includes two vertically arranged screws II, a nut II and a motor I used in conjunction with the screw II; the screw II and the nut II are located between the two vertical linear guide rails I, the upper end of the screw II is rigidly connected to the output shaft of the motor I, the nut II is fixed to the rear end of the slider I, and the motor I is fixed to the upper end surface of the vertical frame.

10. The contact network annular steel pipe column weld grinding equipment according to claim 1 or 2, characterized in that: The roller lifting mechanism includes two groups of guide sleeves and guide shafts, two groups of vertically arranged screws I and nuts I, wherein the two guide sleeves are symmetrically fixed on both sides of one end of the base II, the lower ends of the two guide shafts are fixed on the upper end surface of the support base, the two nuts I are symmetrically fixed on both sides of the other end of the base II, and the lower ends of the two screws I are rotatably fixed on the upper end surface of the support base or directly connected to the upper end surface of the support base.

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