CN214979157U

CN214979157U - Welding polisher

Info

Publication number: CN214979157U
Application number: CN202120840020.5U
Authority: CN
Inventors: 金鑫; 刘金磊
Original assignee: Zhangjiakou Dajin Wind Power Equipment Co ltd
Current assignee: Zhangjiakou Dajin Wind Power Equipment Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-12-03
Anticipated expiration: 2031-04-22

Abstract

The utility model provides a welding polisher, the welding polisher includes welding module and the module of polishing, the welding module is in including flexible arm and setting the welder of the free end of flexible arm, the movably setting of the module of polishing is in on the flexible arm, the module of polishing includes driving motor and the wheel of polishing, the wheel of polishing rotationally sets up on the flexible arm, driving motor is used for the drive the wheel of polishing is rotatory, this welding polisher simple structure, and compact, when welding operation, the module of polishing can with the welding module simultaneous operation, improved the production efficiency of a tower section of thick bamboo, reduced the manufacturing cost of a tower section of thick bamboo.

Description

Welding polisher

Technical Field

The utility model relates to a welding, grinding tool technical field, more specifically relates to a welding polisher.

Background

Welding and grinding operations are commonly present in industrial production, for example, in the production of towers widely used in the wind power field, where there are a large number of welding and grinding operations. With the development of the wind power industry, a high-power and high tower is a development trend, and the high tower requires that a welding line needs to be polished in the production process of a tower cylinder to enable the welding line height to be 0 mm. At present, when a tower barrel is produced, welding and polishing integrated equipment is not provided, and the welding and polishing processes are separately carried out, so that two production workshops of welding and polishing need to be built simultaneously, the production cost is high, meanwhile, the polishing process needs manual operation, time and labor are wasted, and the overall production efficiency of the tower barrel is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a welding polisher to reduce the manufacturing cost of a tower section of thick bamboo.

In view of the above purpose, the present disclosure provides the following technical solutions:

according to the utility model discloses an aspect provides a welding polisher, the welding polisher includes welding module and the module of polishing, the welding module includes flexible arm and sets up the welder of the free end of flexible arm, the movably setting of the module of polishing is in on the flexible arm, the module of polishing includes driving motor and the wheel of polishing, the wheel of polishing rotationally sets up on the flexible arm, driving motor is used for the drive the wheel of polishing is rotatory. The polishing module and the welding module are connected together, the relative positions of the polishing module and the welding module are adjustable, and polishing points and welding points can be aligned simultaneously, so that polishing operation and welding operation can be performed simultaneously, the production efficiency is improved, the production costs of polishing manpower, workshop building construction and the like are reduced, and the production cost of a tower barrel is reduced.

According to the utility model discloses an aspect, the module of polishing still includes sanding belt and action wheel, sanding belt cover is located the action wheel with between the sanding wheel. The action wheel can be through the abrasive band drive wheel of polishing, and the length in abrasive band of polishing can be selected according to the operating mode to make the welding polisher can be applicable to different space demands, thereby improved the commonality of welding polisher.

According to the utility model discloses an aspect, the module of polishing still includes the take-up pulley, the abrasive band cover of polishing is located on the take-up pulley, be provided with long waist hole on the flexible arm, the take-up pulley set up in long waist is downthehole, so that through the adjustment the take-up pulley is in position in the long waist hole is adjusted the rate of tension on the abrasive band of polishing.

According to the utility model discloses an aspect, the take-up pulley the action wheel and the wheel axle extending direction of wheel three that polishes is on a parallel with the extending direction of flexible arm. In the grinding process of the tower drum, the tower drum can rotate along the axis of the tower drum, the grinding wheel and the tower drum can be tangent to each other, and the grinding wheel can be guaranteed to effectively perform grinding operation.

According to the utility model discloses an aspect, the module of polishing still includes the telescoping cylinder, the first end of telescoping cylinder is fixed in on the telescopic boom, the wheel of polishing rotationally connects the second of telescoping cylinder is served. The position of the polishing wheel can be adjusted by adjusting the length of the telescopic cylinder, so that the polishing wheel can be pressed on the outer side or the inner side of a welding seam of the tower barrel, the universality of the welding polisher is further improved, and the production cost of the tower barrel is reduced.

According to an aspect of the present invention, the welding and grinding machine further comprises a guide rail frame and a movable platform, the grinding support is fixed on the movable platform, the movable platform moves on the guide rail frame along the first direction, and the first direction is parallel to the extending direction of the telescopic arm; or the moving platform can move on the guide rail frame along a first direction and a second direction, wherein the first direction is parallel to the extending direction of the telescopic arm, and the second direction is perpendicular to the first direction; or, the moving platform can move on the guide rail frame along a first direction, a second direction and a third direction, the first direction is parallel to the extending direction of the telescopic arm, and the first direction, the second direction and the third direction are perpendicular to each other. So set up, make moving platform can remove to guide rail frame's optional position to satisfy different construction requirements, thereby can further improve the commonality of welding polisher.

According to an aspect of the utility model, the welding polisher still includes the guide rail subassembly, the guide rail subassembly includes guide rail and slider, the guide rail with one of the slider both is fixed on the guide rail frame, the guide rail with another one of the slider both is fixed on moving platform. So set up, connect moving platform and guide rail frame through the guide rail subassembly, through the relative motion of guide rail and slider, can drive guide rail frame and moving platform's relative motion to can drive the support of polishing and remove on guide rail frame, simple structure, low in manufacturing cost is honest and clean.

According to the utility model discloses an aspect, be provided with the edge on the slider the slotted hole that the extending direction of flexible arm extends, be provided with on the guide rail with the screw hole that the slotted hole matches, through the bolt fastening threaded hole so that the slider for the guide rail is spacing. So set up, carry on spacingly through the bolt to the slider, avoid operation in-process guide rail and slider relative movement to the work precision of welding polisher has been improved.

According to the utility model discloses an aspect, flexible arm includes fixed arm and slide arm, the slide arm slidable ground is connected on the fixed arm, the support of polishing is fixed on the slide arm. The telescopic arm can be telescopic so as to meet different operation and construction requirements.

Further, flexible arm has inside cavity, just flexible arm includes flexible driving piece, displacement sensor and controller, the first end of flexible driving piece is connected on the fixed arm, the second end of flexible driving piece is connected on the sliding arm, the controller can be according to displacement sensor's data drive flexible driving piece operation. So set up, through displacement sensor, controller and flexible driving piece's cooperation, realize welding polisher's automated control to reduce the human cost in the tower section of thick bamboo production process, and then reduced the manufacturing cost of a tower section of thick bamboo.

The utility model provides a welding polisher has following beneficial effect: the welding polisher comprises a welding module and a polishing module, the welding module and the polishing module are connected into an integrated machine and can slide relative to each other, two operations of welding and polishing can be carried out simultaneously, production efficiency is greatly improved, and production cost of the manual polishing operation in a construction workshop is saved.

Drawings

The above and/or other objects and advantages of the present invention will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

fig. 1 is a front view of a welding sander according to an exemplary embodiment of the present invention.

Fig. 2 is a side view of the weld sander of fig. 1.

Fig. 3 is a front view of the guide rail of fig. 1.

Fig. 4 is a front view of the slider of fig. 1.

Fig. 5 is a front view of the upper connecting plate of fig. 1.

Fig. 6 is a plan view of the upper connection plate of fig. 5.

Fig. 7 is a front view of the lower connecting plate of fig. 1.

Fig. 8 is a top view of the lower connecting plate of fig. 7.

Fig. 9 is a structural view of the splint of fig. 1.

Description of reference numerals:

100. welding the module; 110. A welding gun;

130. a telescopic arm; 131. A slide arm;

132. a fixed arm; 200. Polishing the module;

210. a drive motor; 220. A driving wheel;

230. grinding the wheel; 240. Sanding an abrasive belt;

250. a tension wheel; 260. A telescopic cylinder;

310. a slider; 313. A threaded hole;

320. a guide rail; 350. A fixed block;

400. polishing the bracket; 410. An upper connecting plate;

420. a lower connecting plate; 430. A first connecting plate;

440. a second connecting plate; 450. A splint;

600. a tower drum.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the embodiments of the present invention are limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The utility model provides a welding polisher, the following will refer to fig. 1 to fig. 9 detailed description according to the utility model discloses a concrete structure of embodiment. In the drawings, like reference numerals refer to like parts throughout.

Fig. 1 is a front view of a welding sander according to an exemplary embodiment of the present invention. Fig. 2 is a side view of the weld sander of fig. 1. As shown in fig. 1 and 2, in an embodiment of the present invention, the welding sander includes a sanding module 200 and a welding module 100, wherein the welding module 100 includes a telescopic arm 130 and a welding gun 110 disposed at a free end of the telescopic arm 130, the sanding module 200 is movably disposed on the telescopic arm 130, the sanding module 200 may include a driving motor 210 and a sanding wheel 230, the sanding wheel 230 is rotatably disposed on the telescopic arm 130, and the driving motor 210 is configured to drive the sanding wheel 230 to rotate.

Because the polishing module 200 and the welding module 100 are connected into a whole, the structure is simple, the volume is compact, and during welding operation, the polishing module 200 and the welding module 100 can operate simultaneously, so that the production efficiency of the tower barrel is improved, and the production cost of the tower barrel is reduced. In addition, because an additional polishing workshop is not required to be built, the production cost in the aspects of module transportation and workshop building is saved.

Specifically, the telescopic arm 130 may include a sliding arm 131 and a fixed arm 132, and the sliding arm 131 is slidably connected to the fixed arm 132 to achieve front-back extension and retraction, so that the stroke of the welding gun 110 may be adjusted, and the versatility of the welding sander is improved.

Further, the polishing module 200 is movably arranged on the telescopic arm 130, and the distance between the welding gun 110 and the polishing wheel 230 can be adjusted by moving the polishing module 200 on the telescopic arm 130 so as to adapt to two welding seams with different distances, thereby improving the universality of the welding polisher.

After the welding of the first weld joint is completed, the polishing module 200 can be started to polish the first weld joint in the process of welding the second weld joint, so that the welding operation and the polishing operation can be performed simultaneously, the working efficiency is improved, and the manufacturing cost of the tower drum 600 is reduced. Specifically, after the first weld is welded, the position of the grinding module 200 on the telescopic arm 130 may be adjusted so that the distance between the grinding wheel 230 and the welding gun 110 is the same as the distance between two welds, i.e., the grinding wheel 230 may be located at the first weld position and the welding gun 110 may be located at the second weld position.

In this embodiment, the polishing module 200 may be driven by a telescopic cylinder or a lead screw, or may be manually pushed.

Further, in order to improve the universality of the welding polisher and adapt to different working conditions, the polishing module 200 may further include a polishing abrasive belt 240 and a driving wheel 220, the polishing abrasive belt 240 may be sleeved between the driving wheel 220 and the polishing wheel 230, in this embodiment, the polishing wheel 230 may serve as a supporting wheel, and the outer surface of the polishing abrasive belt 240 may contact with a weld of the tower 600 to polish the weld, but not limited thereto.

Referring to fig. 2, the driving motor 210 may be disposed on the top of the telescopic arm 130, the driving wheel 220 may be fixed on an output shaft of the driving motor 210, the polishing wheel 230 may be disposed at an interval from the driving wheel 220, and the polishing belt 240 is simultaneously sleeved on the peripheries of the polishing wheel 230 and the driving wheel 220 to support the polishing belt 240 through the polishing wheel 230 and the driving wheel 220, the polishing belt 240 may have an outer surface for polishing on one hand, so as to polish a tower, and on the other hand, the polishing belt 240 may also be used as a conveyor belt to transmit power of the driving motor 210 to the polishing wheel 230.

So set up, be connected through sanding belt 240 between grinding wheel 230 and the driving motor 210, not restricted by the space, under the less condition in space, the distance between grinding wheel 230 and the driving motor 210 can be less, under the great condition in space, can adjust to great again between grinding wheel 230 and the driving motor 210 to welding polisher's commonality has been improved.

In addition, according to the space requirement, the grinding wheel 230 may directly contact with the weld of the tower drum 600 to grind the weld, and the transition wheel is additionally added to realize power transmission, in which case, the grinding belt 240 may be supported on the transition wheel and the driving wheel 220 to transmit the power of the driving motor 210 to the grinding wheel 230.

With continued reference to fig. 2, in an exemplary embodiment of the present disclosure, in order to adjust the tightness of sanding belt 240 for better power transmission, sanding module 200 may further include a tension wheel 250, sanding belt 240 may be sleeved on tension wheel 250, i.e. sanding belt 240 may be supported on driving wheel 220, sanding wheel 230 and tension wheel 250, and the tightness of sanding belt 240 may be adjusted by adjusting the position of tension wheel 250.

Specifically, the telescopic arm 130 may be provided with a long waist hole, not shown, and the tension pulley 250 may be disposed in the long waist hole to adjust the tightness of the sanding belt 240 by adjusting the position of the tension pulley 250 in the long waist hole, but not limited thereto.

With continued reference to fig. 2, in this embodiment, driving wheel 220 may be located at the top of telescopic arm 130, and grinding wheel 230 may be located at the lower portion of telescopic arm 130 and below driving wheel 220, so as to avoid that grinding belt 240 rubs against telescopic arm 130 to reduce the service life of grinding belt 240, 4 intermediate wheels may be further disposed between grinding wheel 230 and driving wheel 220, and at least one of the 4 intermediate wheels may be tensioning wheel 250. Specifically, the telescopic arm 130 may have a rectangular cross-section, and 4 intermediate wheels are disposed at approximately 4 corners of the telescopic arm 130. In this embodiment, sanding belt 240 may be disposed around the circumference of telescopic arm 130 and supported on drive wheel 220, sanding wheel 230, and tension wheel 250, for example, but not limited to, sanding belt 240 may be formed in a substantially hexagonal configuration.

More specifically, the wheel shafts of the tension wheel 250, the driving wheel 220 and the grinding wheel 230 all extend in parallel with the extending direction of the telescopic arm 130, so that the tower can rotate along the axis of the tower during the grinding process of the tower, and the grinding abrasive belt 240 and the tower can be tangent to each other, can be internally tangent to each other, and can also be externally tangent to each other. As shown in fig. 2, sanding belt 240 may be used to sand the outer circumference of the girth weld as well as the inner circumference of the girth weld.

In order to further improve the universality of the welding sander, the sanding wheel 230 is configured to be capable of moving perpendicular to the extending direction of the telescopic arm 130, specifically, as shown in fig. 2, the sanding module 200 may further include a telescopic cylinder 260, a first end of the telescopic cylinder 260 may be fixed on the telescopic arm 130, the sanding wheel 230 may be rotatably connected to a second end of the telescopic cylinder 260, and when sanding work is performed, the sanding belt 240 may be pressed against a weld joint by adjusting the length of the telescopic cylinder 260, so as to be capable of adapting to a cylindrical or conical tower, thereby improving the universality of the welding sander. Besides, the polishing depth of the polishing wheel 230 can be adjusted by adjusting the length of the telescopic cylinder 260, so as to meet different welding seam quality requirements.

To further improve the versatility of the welding sander, the welding sander may include a rail frame to which the sanding stand 400 may be fixed and a moving platform (not shown) that may move in a first direction on the rail frame, which may be parallel to the extension direction of the telescopic arm 130. In this embodiment, a straight line where the grinding wheel 230 and the welding gun 110 are located may be parallel to the first direction, that is, parallel to the extending direction of the telescopic arm 130, and the welding seams at different height positions on the same tower may be ground and welded by adjusting the distance between the grinding wheel 230 and the welding gun 110.

Besides, the moving platform can move on the guide rail frame along a first direction and a second direction, the first direction is parallel to the extending direction of the telescopic arm 130, and the second direction is perpendicular to the first direction. Further, the moving platform may also move on the rail frame in a first direction parallel to the extending direction of the telescopic arm 130, a second direction and a third direction perpendicular to each other, so that the grinding wheel 230 may move in a space formed by the first direction, the second direction and the third direction.

The production requirements of different types can be met by large-range and multidirectional movement of the moving platform on the guide rail frame, namely when the welding point and the polishing point are at different positions, the polishing wheel 230 and the welding gun 110 can be aligned to the welding point and the polishing point at the same time by adjusting the position of the moving platform on the guide rail frame, so that the device is greatly convenient for workers to use, has great convenience and can also improve the production efficiency.

Specifically, the guide frame may be fixed to the telescopic arm 130, for example, but not limited to, the guide frame may be a hexahedral frame, and the guide frame may be sleeved in an outer space of the telescopic arm 130, so that the grinding wheel 230 may move around the circumference of the telescopic arm 130.

For convenience of description, the drawings omit the guide rail frame, and only show the specific structure of the guide rail assembly, and refer to fig. 2 specifically.

To facilitate adjustment of the distance between the grinding wheel 230 and the welding gun 110, the grinding module 200 may be coupled to the telescopic arm 130 via a rail assembly. Specifically, the guide rail assembly may include a guide rail 320 and a slider 310, one of the guide rail 320 and the slider 310 may be fixed on the guide rail frame, and the other of the guide rail 320 and the slider 310 may be fixed on the mobile platform, so that the mobile platform may be moved on the guide rail frame by the slider 310 moving on the guide rail 320. The rail frame may be fixed on the telescopic arm 130, and the polishing module 200 may be fixed on the moving platform, so that the moving platform moves on the rail frame, and the polishing module 200 may be driven to move on the telescopic arm 130.

Referring to fig. 1 and 2, a plurality of fixing blocks 350 may be provided on the top of the telescopic arm 130, wherein the fixing blocks 350 may be provided with screw holes, and the rail frame may be fixed to the telescopic arm 130 by coupling fasteners to the screw holes. Thus, the fixing block 350 is arranged on the telescopic arm 130, so that direct punching on the telescopic arm 130 is avoided, and the structural strength of the telescopic arm 130 is improved. Specifically, the plurality of fixing blocks 350 may be uniformly connected to the telescopic arm 130, so that the rail frame is uniformly connected to the telescopic arm 130, thereby preventing local stress concentration of the rail frame and improving the service life of the rail frame.

In order to limit the position of the sliding block 310, a slot, not shown, is formed in the sliding block 310, the extending direction of the slot is the same as the extending and retracting direction of the telescopic arm 130, and a threaded hole, not shown, is formed in the guide rail 320 and is matched with the slot, and the sliding block 310 can be fixed in the threaded hole through a bolt, so that the position of the sliding block 310 relative to the guide rail 320 is limited. As an example, the slot hole may be a long waist hole extending in the extending direction of the telescopic arm 130. In actual production, when welding and grinding operations are performed, the grinding wheel 230 and the welding gun 110 are aligned to the grinding point and the welding point at the same time by adjusting the position of the moving platform and then fixed in the threaded hole by bolts, so that the grinding module 200 is prevented from moving relative to the welding module 100 during use. It is understood that a plurality of light holes may be respectively formed on the slider 310 and the guide rail 320, and the position of the slider 310 on the guide rail 320 may be adjusted by disposing the stopper pin in different light holes.

In order to mount and fix the grinding wheel 230, the driving wheel 220 and the tension wheel 250, as shown in fig. 2 and 5 to 8, the welding and grinding machine of the present invention further includes an upper connecting plate 410 and a lower connecting plate 420, as shown in the figure, the upper connecting plate 410 is L-shaped, a first connecting plate 430 is fixedly connected to one end of the upper connecting plate, and the first connecting plate 430 can be fixed to the top of the mobile platform. Specifically, the first connecting plate 430 may be square, the number of the threaded holes is four, the threaded holes are provided on the first connecting plate 430, the threaded holes are uniformly distributed on four corner edges of the square, and the bolts can pass through the threaded holes to be connected with the mobile platform, so that the upper connecting plate 410 is driven to move when the mobile platform is moved. As shown in fig. 7 and 8, the lower connecting plate 420 is U-shaped, and a second connecting plate 440 is disposed at a corner of the U-shape, and the second connecting plate 440 is provided with a threaded hole to connect with the moving platform, so as to move along with the moving platform. A square cavity is formed in the middle of the lower connecting plate 420 to accommodate the telescopic cylinder 260, and threaded holes are formed at four corners of the cavity to fix the telescopic cylinder 260.

In order to connect upper junction plate 410 and lower connecting plate 420, the utility model discloses a welding polisher still includes splint 450, as shown in fig. 9, splint 450 is equipped with screw hole and middle through-hole, in this exemplary embodiment, as shown in fig. 1, total two splint 450 are located upper junction plate 410 and lower connecting plate 420 respectively, be used for fixed connection upper junction plate 410 and lower connecting plate 420, the middle through-hole of splint 450 can satisfy the piston rod of pneumatic cylinder through can realizing the motion of hydraulic drive module 200 of polishing, convenient laborsaving, provide work efficiency.

To sum up, the utility model provides a welding polisher, including welding module 100 and the module 200 of polishing, welding module 100 and the module 200 accessible rail frame of polishing and moving platform slidable are connected, and welding module 100 and rail frame fixed connection also can dismantle the connection, and moving platform can dismantle or fixed connection with the module 200 of polishing. The utility model discloses a welding polisher can be when the construction operation, take the welding of a tower section of thick bamboo as an example, drive the module 200 removal of polishing with moving platform through promoting the pneumatic cylinder, adjust the distance of polishing wheel 230 and welder 110, so that the welding point aligns simultaneously with the point of polishing, because a tower section of thick bamboo is the cylinder shape, the welding seam can be located the different circumferences of a tower section of thick bamboo with the seam of polishing, when polishing wheel 230 and welder 110 aim at respectively polishing point and welding point, through rotatory tower section of thick bamboo, can realize welding operation and the operation of polishing and go on simultaneously. After the welding operation, need not to shift the tower section of thick bamboo to the workshop of polishing and carry out the operation of polishing, saved factory building construction, shifted a tower section of thick bamboo and polished required manpower and materials, greatly reduced manufacturing cost, simultaneously, go on when polishing and welded, improved production efficiency greatly. On the other hand, a tower drum designer can adopt a higher welding seam fatigue grade to design when designing a tower drum, so that a generator set tower with more economic cost is designed, and furthermore, an effective solution is provided for a tower factory, wherein the requirement of the tower circumferential weld DC112 fatigue grade can be met.

In the description of the present disclosure, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the disclosure, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the disclosure.

In the description of the present disclosure, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

Embodiments of the present application are described above with reference to the drawings. However, it is to be understood that the disclosed embodiments are merely intended to be examples that may be embodied in various and alternative forms. Specific structural and functional details disclosed are not to be interpreted as limiting, but as a representative basis for teaching one skilled in the art how to practice the disclosed concepts.

Claims

1. A welding sander, characterized in that the welding sander comprises a welding module (100) and a sanding module (200), the welding module (100) comprises a telescopic arm (130) and a welding gun (110) arranged at the free end of the telescopic arm (130), the sanding module (200) is movably arranged on the telescopic arm (130), the sanding module (200) comprises a driving motor (210) and a sanding wheel (230), the sanding wheel (230) is rotatably arranged on the telescopic arm (130), and the driving motor (210) is used for driving the sanding wheel (230) to rotate.

2. The welding sander of claim 1, wherein the sanding module (200) further comprises a sanding belt (240) and a drive wheel (220), the sanding belt (240) being nested between the drive wheel (220) and the sanding wheel (230).

3. The welding sander of claim 2, wherein the sanding module (200) further comprises a tensioning wheel (250), the sanding belt (240) is sleeved on the tensioning wheel (250), the telescopic arm (130) is provided with a long waist hole, and the tensioning wheel (250) is arranged in the long waist hole to adjust the tightness of the sanding belt (240) by adjusting the position of the tensioning wheel (250) in the long waist hole.

4. The welding sander of claim 3, wherein the direction of wheel axis extension of the tension wheel (250), the drive wheel (220), and the sanding wheel (230) is parallel to the direction of extension of the telescoping arm (130).

5. The welding sander of any of claims 1-4, wherein the sanding module (200) further comprises a telescoping cylinder (260), a first end of the telescoping cylinder (260) being fixed to the telescoping arm (130), and the sanding wheel (230) being rotatably attached to a second end of the telescoping cylinder.

6. The welding sander of claim 5, further comprising a rail frame, a moving platform, and a sanding stand (400), the sanding stand (400) for supporting the sanding module (200), the sanding stand (400) being fixed to the moving platform, the moving platform moving in a first direction on the rail frame, the first direction being parallel to the direction of extension of the telescoping arm (130);

or, the mobile platform is movable on the guideway frame in a first direction parallel to the extension direction of the telescopic arm (130) and in a second direction perpendicular to the first direction;

or, the mobile platform can move on the guide rail frame along a first direction, a second direction and a third direction, the first direction is parallel to the extending direction of the telescopic arm (130), and the first direction, the second direction and the third direction are perpendicular to each other.

7. The welding sander of claim 6, wherein the welding sander further comprises a rail assembly, the rail assembly comprising a rail (320) and a slider (310), one of the rail (320) and the slider (310) being fixed to the rail frame, the other of the rail (320) and the slider (310) being fixed to the moving platform.

8. The welding sander of claim 7, wherein the slider (310) is provided with a slot extending in the direction of extension of the telescopic arm (130), and the guide rail (320) is provided with a threaded hole matching the slot, and is fixed in the threaded hole by a bolt to position the slider (310) relative to the guide rail (320).

9. The welding sander of claim 8, wherein the telescoping arm (130) comprises a fixed arm (132) and a sliding arm (131), the sliding arm (131) being slidably connected to the fixed arm (132), the sanding carriage (400) being fixed to the sliding arm (131).

10. The welding sander of claim 9, wherein the telescoping arm (130) has an internal cavity, and wherein the telescoping arm (130) comprises a telescoping drive member, a displacement sensor, and a controller, wherein a first end of the telescoping drive member is connected to the stationary arm (132) and a second end of the telescoping drive member is connected to the sliding arm (131), and wherein the controller is capable of driving the telescoping drive member to operate based on data from the displacement sensor.