CN210548481U - Handrail pipe groover - Google Patents

Abstract

The utility model relates to the technical field of auxiliary devices for processing handrail tubes, in particular to a handrail tube grooving machine, which comprises a front fixed plate, a rear fixed plate, a workbench, a fixed shaft, blades, a rotating shaft, a motor and four groups of supporting legs; still include threaded rod, left inserted bar, right inserted bar, left fixture block, right fixture block, left connecting rod, right connecting rod, screwed pipe, backup pad, preceding baffle, backplate, left slide bar and right slide bar, the utility model discloses a handrail tube groover can conveniently fix the handrail tube of treating processing, reduces handrail tube and takes place to rock in the course of working, conveniently adjusts handrail tube's height to conveniently adjust handrail tube processing groove depth.

Description

Handrail pipe groover

Technical Field

The utility model relates to a handrail tube processing auxiliary device's technical field especially relates to a handrail tube groover.

Background

As is well known, a handrail tube grooving machine is a device for grooving the outer side wall of a handrail tube, and is widely used in the field of handrail tube processing; the existing handrail tube grooving machine comprises a front fixing plate, a rear fixing plate, a workbench, a fixing shaft, a blade, a rotating shaft, a motor and four groups of supporting legs, wherein the bottom ends of the front fixing plate and the rear fixing plate are respectively connected with the left front side and the left rear side of the top surface of the workbench, the rear end of the fixing shaft is rotatably connected with the right half area in front of the rear fixing plate, the front end of the fixing shaft is connected with the central area in back of the blade, the rear end of the rotating shaft is connected with the central area in front of the blade, the front end of the rotating shaft penetrates through the front fixing plate, the front end of the rotating shaft is connected with the output end of the rear end of the motor, the motor is detachably mounted in the right half area in front of the; when the conventional handrail tube grooving machine is used, a motor is started, the motor drives a rotating shaft to rotate, the rotating shaft drives a blade to rotate, the blade drives a fixed shaft to rotate, the rear end of the fixed shaft is rotatably connected with the right half area in front of a rear fixed plate, a worker holds a handrail tube by hand and moves the handrail tube from right to left to enable the handrail tube to be in contact with the rotating blade, the rotating blade punches a groove on the outer side wall of the handrail tube, and the depth of the punched groove on the handrail tube can be adjusted by vertically moving the position of the handrail tube; the existing handrail tube grooving machine is found in use, a worker directly holds the handrail tube to process the handrail tube, the handrail tube is easy to shake in the processing process, the depth of a processing groove of the handrail tube is inconvenient to adjust, and the processing quality of the handrail tube is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a can conveniently treat the handrail pipe of processing and fix, reduce the handrail pipe and take place to rock in the course of working, conveniently adjust the height of handrail pipe to conveniently adjust handrail pipe groover of handrail pipe processing groove depth.

The utility model discloses a handrail tube groover, including preceding fixed plate, the after-fixing board, the workstation, the fixed axle, the blade, the pivot, motor and four groups of landing legs, preceding fixed plate bottom and after-fixing board bottom are connected with workstation top surface left front side and left rear side respectively, fixed axle rear end and the preceding right half regional rotatable coupling of after-fixing board, the fixed axle front end is connected with the blade back central zone, the pivot rear end is connected with the preceding central zone of blade, the pivot front end passes the before-fixing board, the pivot front end is connected with motor rear end output, the motor can be dismantled and install in the preceding right half regional of front of preceding fixed plate, four groups of landing legs top are connected with workstation bottom surface left front side, left rear side, right front side and right rear side respectively; the novel hydraulic clamping device is characterized by further comprising a threaded rod, a left insert rod, a right insert rod, a left clamping block, a right clamping block, a left connecting rod, a right connecting rod, a threaded pipe, a supporting plate, a front baffle plate, a rear baffle plate, a left sliding rod and a right sliding rod, wherein a first round hole is longitudinally formed in the central area of the workbench, the bottom end of the threaded rod penetrates through the first round hole, an annular cavity is formed in the central area of the bottom surface of the workbench, an annular opening is formed in the central area of the bottom surface of the workbench and communicated with the annular cavity, the top ends of the left insert rod and the right insert rod are inserted into the annular cavity from the annular opening, the top end of the left insert rod and the top end of the right insert rod are respectively connected with the bottom end of the left clamping block and the bottom end of the right clamping block, the left end of the left connecting rod and the right end of the right connecting rod are respectively connected with the lower half area of the right, threaded rod bottom end spiral shell dress passes the screwed pipe, and the threaded rod top is connected with backup pad bottom surface central zone, preceding baffle bottom surface and backplate bottom surface are connected with the preceding half region of backup pad top surface and latter half region respectively, and the left half region of workstation and right half region vertically are provided with second round hole and third round hole respectively, second round hole and third round hole are passed respectively on left side slide bar top and right slide bar top, and left side slide bar top and right slide bar top are connected with backup pad bottom surface left half region and right half region respectively.

The utility model discloses a handrail tube groover still includes ball bearing, left dog, right dog, connecting axle, gear, bull stick and multiunit picture peg, and the half regional circular recess that is provided with on the right side of workstation bottom surface, inside ball bearing inserts circular recess on the top, left side dog top and right dog top all with workstation bottom surface half regional connection on the right side, left side dog top and right dog top all contact with the ball bearing bottom, the connecting axle top inserts ball bearing inside and interference fit with it is connected, the connecting axle bottom is connected with gear top surface central authorities regional connection, the bull stick top is connected with gear bottom surface central authorities's region, multiunit picture peg one end is equidistant to be installed at the screwed pipe lateral wall, the gear meshes with the multiunit picture peg completely.

The utility model discloses a handrail tube groover still includes the handle, and the bull stick bottom is connected with the left half regional of handle top surface.

The utility model discloses a handrail tube groover still includes left cardboard and right cardboard, left side slide bar bottom and right slide bar bottom are connected with left cardboard top and right cardboard top respectively.

The utility model discloses a handrail tube groover still includes left rubber pad and right rubber pad, left side rubber pad bottom surface and right rubber pad bottom surface are connected with left cardboard top surface and right cardboard top surface respectively.

The utility model discloses a handrail tube groover still includes action bars, connecting plate and multiunit brush hair, and workstation right side wall is provided with the rectangle recess, the rectangle recess is inserted to the action bars left end, action bars left end and connecting plate right side wall central zone are connected, and multiunit brush hair right-hand member all is connected with connecting plate left side wall.

The utility model discloses a handrail tube groover, the left half region of workstation bottom surface is provided with two sets of first rectangular holes and two sets of second rectangular holes respectively with the right half region, and two sets of first rectangular holes all are located left inserted bar left and right sides, and two sets of second rectangular holes are located right inserted bar left and right sides respectively.

The utility model discloses a handrail tube groover, the backup pad has the ascending arc of opening.

Compared with the prior art, the beneficial effects of the utility model are that: rotating a threaded pipe, wherein the threaded pipe drives a left insert rod and a right insert rod to rotate at an annular opening, the left insert rod and the right insert rod respectively drive a left clamping block and a right clamping block to rotate in an annular cavity, when the threaded pipe rotates, a threaded rod moves upwards or downwards along the threaded pipe, the threaded rod drives a left sliding rod and a right sliding rod to respectively slide upwards or downwards along a second round hole and a third round hole, the left sliding rod and the right sliding rod allow the threaded rod to move up and down but do not allow the threaded rod to do rotary motion along the threaded pipe, so that the height of a supporting plate is adjusted, a handrail pipe to be processed is placed on the supporting plate, a front baffle and a rear baffle respectively block the handrail pipe from the front side and the rear side, the front displacement and the rear displacement of the handrail pipe are reduced, when the handrail pipe moves to an appropriate processing height, the threaded pipe is stopped, a motor is started, fixed axle rear end and the preceding right half regional rotatable coupling of after-fixing board, the staff promotes the handrail from the right side left for handrail pipe and rotatory blade contact, rotatory blade with handrail pipe lateral wall beat the recess can, conveniently treat the handrail pipe of processing and fix, reduce handrail pipe and take place to rock in the course of working, conveniently adjust the height of handrail pipe, thereby conveniently adjust handrail pipe processing groove depth.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged view of a portion C of FIG. 1;

FIG. 5 is a left side view schematic of the support plate, front baffle and rear baffle;

FIG. 6 is a schematic top view of the front fixing plate, the rear fixing plate, the fixing shaft, the blade, the rotating shaft and the motor;

in the drawings, the reference numbers: 1. a front fixing plate; 2. a rear fixing plate; 3. a work table; 4. a fixed shaft; 5. a blade; 6. a rotating shaft; 7. a motor; 8. a support leg; 9. a threaded rod; 10. a left inserted link; 11. a right insertion rod; 12. a left clamping block; 13. a right clamping block; 14. a left connecting rod; 15. a right connecting rod; 16. a threaded pipe; 17. a support plate; 18. a front baffle; 19. a tailgate; 20. a left slide bar; 21. a right slide bar; 22. a ball bearing; 23. a left stop block; 24. a right stopper; 25. a connecting shaft; 26. a gear; 27. a rotating rod; 28. inserting plates; 29. a left snap gauge; 30. a right snap-gauge; 31. a left rubber pad; 32. an operating lever; 33. a connecting plate; 34. brushing; 35. a handle.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 6, the utility model discloses a handrail tube grooving machine, including front fixed plate 1, rear fixed plate 2, workstation 3, fixed axle 4, blade 5, pivot 6, motor 7 and four groups of landing legs 8, front fixed plate 1 bottom and rear fixed plate 2 bottom are connected with workstation 3 top surface left front side and left rear side respectively, fixed axle 4 rear end and rear fixed plate 2 front right half regional rotatable coupling, fixed axle 4 front end is connected with blade 5 rear central area, pivot 6 rear end is connected with blade 5 front central area, pivot 6 front end passes front fixed plate 1, pivot 6 front end and motor 7 rear end output are connected, motor 7 demountable installation is in front right half regional on front of front fixed plate 1, four groups of landing legs 8 tops are connected with workstation 3 bottom surface left front side, left rear side, right front side and right rear side respectively; the device also comprises a threaded rod 9, a left insert rod 10, a right insert rod 11, a left fixture block 12, a right fixture block 13, a left connecting rod 14, a right connecting rod 15, a threaded pipe 16, a supporting plate 17, a front baffle 18, a rear baffle 19, a left sliding rod 20 and a right sliding rod 21, wherein a first round hole is longitudinally formed in the central area of the workbench 3, the bottom end of the threaded rod 9 penetrates through the first round hole, an annular cavity is formed in the central area of the bottom surface of the workbench 3, an annular opening is formed in the central area of the bottom surface of the workbench 3 and communicated with the annular cavity, the top end of the left insert rod 10 and the top end of the right insert rod 11 are inserted into the annular cavity from the annular openings, the top end of the left insert rod 10 and the top end of the right insert rod 11 are respectively connected with the bottom end of the left fixture block 12 and the bottom end of the right fixture block 13, the left end of the left connecting rod 14 and the right connecting rod 15 are respectively connected with the lower half area of the right side wall of the left side wall, the bottom end of the threaded rod 9 is screwed and penetrates through a threaded pipe 16, the top end of the threaded rod 9 is connected with the central area of the bottom surface of the supporting plate 17, the bottom surface of the front baffle 18 and the bottom surface of the rear baffle 19 are respectively connected with the front half area and the rear half area of the top surface of the supporting plate 17, the left half area and the right half area of the workbench 3 are longitudinally provided with a second round hole and a third round hole respectively, the top end of the left slide bar 20 and the top end of the right slide bar 21 respectively penetrate through the second round hole and the third round hole, and the top end of the left slide bar 20 and the top end of the right slide; rotating a threaded pipe, wherein the threaded pipe drives a left insert rod and a right insert rod to rotate at an annular opening, the left insert rod and the right insert rod respectively drive a left clamping block and a right clamping block to rotate in an annular cavity, when the threaded pipe rotates, a threaded rod moves upwards or downwards along the threaded pipe, the threaded rod drives a left sliding rod and a right sliding rod to respectively slide upwards or downwards along a second round hole and a third round hole, the left sliding rod and the right sliding rod allow the threaded rod to move up and down but do not allow the threaded rod to do rotary motion along the threaded pipe, so that the height of a supporting plate is adjusted, a handrail pipe to be processed is placed on the supporting plate, a front baffle and a rear baffle respectively block the handrail pipe from the front side and the rear side, the front displacement and the rear displacement of the handrail pipe are reduced, when the handrail pipe moves to an appropriate processing height, the threaded pipe is stopped, a motor is started, fixed axle rear end and the preceding right half regional rotatable coupling of after-fixing board, the staff promotes the handrail from the right side left for handrail pipe and rotatory blade contact, rotatory blade with handrail pipe lateral wall beat the recess can, conveniently treat the handrail pipe of processing and fix, reduce handrail pipe and take place to rock in the course of working, conveniently adjust the height of handrail pipe, thereby conveniently adjust handrail pipe processing groove depth.

The utility model discloses a handrail tube groover, still include ball bearing 22, left dog 23, right dog 24, connecting axle 25, gear 26, bull stick 27 and multiunit picture peg 28, the right half regional circular recess that is provided with on the right side of workstation 3 bottom surface, ball bearing 22 top inserts inside the circular recess, left dog 23 top and right dog 24 top all are connected with workstation 3 bottom surface right half regional, left dog 23 top and right dog 24 top all contact with ball bearing 22 bottom, connecting axle 25 top inserts inside ball bearing 22 and is connected with it interference fit, connecting axle 25 bottom is connected with gear 26 top surface central zone, bull stick 27 top is connected with gear 26 bottom surface central zone, multiunit picture peg 28 one end is equidistant to be installed at the screwed pipe 16 lateral wall, gear 26 meshes with multiunit picture peg 28 completely; when the screwed pipe is rotated to needs, rotatory bull stick, the bull stick drives the gear rotatory, and rotatory gear drives the connecting axle at ball bearing internal rotation, and left dog and right dog block ball bearing card in circular recess, because gear and multiunit picture peg mesh completely, so rotatory gear passes through multiunit picture peg and drives the screwed pipe rotation, makes things convenient for rotatory screwed pipe, improves and uses the flexibility.

The utility model discloses a handrail tube grooving machine, which also comprises a handle 35, wherein the bottom end of a rotating rod 27 is connected with the left half area of the top surface of the handle 35; the rotary rod can be rotated by the handle, so that the operation of workers is facilitated, and labor is saved.

The utility model discloses a handrail tube grooving machine, which also comprises a left clamping plate 29 and a right clamping plate 30, wherein the bottom end of a left sliding rod 20 and the bottom end of a right sliding rod 21 are respectively connected with the top end of the left clamping plate 29 and the top end of the right clamping plate 30; when the threaded rod drives the backup pad and reciprocates, the backup pad drives left slide bar and slides from top to bottom with the slide bar, when left slide bar and right slide bar rebound to left cardboard and right cardboard all with the workstation contact, left slide bar and right slide bar can not continue rebound, reduce because of the rotatory gear excessively leads left slide bar and right slide bar and workstation separation, improve stability in use.

The utility model discloses a handrail tube grooving machine, which also comprises a left rubber pad 31 and a right rubber pad, wherein the bottom surface of the left rubber pad 31 and the bottom surface of the right rubber pad are respectively connected with the top surface of a left clamping plate 29 and the top surface of a right clamping plate 30; when left cardboard and right cardboard all with the public ancestor platform contact, left rubber pad and right rubber pad play the cushioning effect, reduce the striking of left cardboard and right cardboard and workstation.

The utility model discloses a handrail tube grooving machine, still include action bars 32, connecting plate 33 and multiunit brush hair 34, the right side wall of workstation 3 is provided with the rectangle recess, the rectangle recess is inserted to action bars 32 left end, action bars 32 left end and connecting plate 33 right side wall central zone are connected, multiunit brush hair 34 right-hand member all is connected with connecting plate 33 left side wall; after the hand-held pipe is machined, the hand-held pipe is taken down, the operating rod is drawn out from the rectangular groove, and the plurality of groups of bristles are utilized to clean the scraps on the top surface of the supporting plate.

The utility model discloses a handrail tube groover, the left half region and the right half region of 3 bottom surfaces of the working platform are provided with two groups of first rectangular holes and two groups of second rectangular holes respectively, the two groups of first rectangular holes are all located the left and right sides of the left inserted link 10, and the two groups of second rectangular holes are located the left and right sides of the right inserted link 11 respectively; when the screwed pipe rotates, the screwed pipe drives the left clamping block and the right clamping block to rotate in the annular cavity through the left connecting rod, the right connecting rod, the left inserting rod and the right inserting rod, the left clamping block and the right clamping block can generate heat when being rubbed with the annular cavity, the two groups of first rectangular holes and the two groups of second rectangular holes are convenient for dissipating the heat generated by friction, and the temperature rise of the bottom surface of the workbench due to friction is reduced.

The utility model relates to a handrail tube grooving machine, a support plate 17 is provided with an arc shape with an upward opening; the radian of the supporting plate is consistent with that of the hand-held pipe to be processed, the contact area of the supporting plate and the hand-held pipe is increased, the abrasion of the contact position caused by the small contact area of the hand-held pipe and the supporting plate is reduced, and the influence on the quality of the hand-held pipe is reduced.

The utility model discloses a handrail tube grooving machine, it is at the during operation, the rotatory screwed pipe, the screwed pipe drives left inserted bar and right inserted bar and rotates at annular opening part, left inserted bar and right inserted bar drive left fixture block and right fixture block respectively and rotate in the annular chamber, when the screwed pipe is rotatory, the threaded rod moves up or down along the screwed pipe, the threaded rod drives left slide bar and right slide bar and slides up or down along second round hole and third round hole respectively, left slide bar and right slide bar allow the threaded rod to reciprocate but not allow the threaded rod to do rotary motion along with the screwed pipe, thereby adjust the height of backup pad, the handrail tube to be processed is placed on the backup pad, front baffle and back baffle block the handrail tube from front and back both sides respectively, reduce displacement around the handrail tube takes place, when moving to suitable processing height, stop rotating the screwed pipe, open the motor, the motor drives the pivot rotation, the rotating shaft drives the blade to rotate, the blade drives the fixed shaft to rotate, the rear end of the fixed shaft is rotatably connected with the right half area in front of the rear fixed plate, a worker pushes the handrail from right to left to enable the handrail tube to be in contact with the rotating blade, the rotating blade punches a groove on the outer side wall of the handrail tube, the handrail tube to be processed is conveniently fixed, the phenomenon that the handrail tube shakes in the processing process is reduced, the height of the handrail tube is conveniently adjusted, and therefore the depth of the groove in the processing of the handrail tube is conveniently adjusted; when the threaded pipe needs to be rotated, the rotating rod is rotated, the rotating rod drives the gear to rotate, the rotating gear drives the connecting shaft to rotate in the ball bearing, the ball bearing is clamped in the circular groove by the left stop block and the right stop block, and the rotating gear drives the threaded pipe to rotate through the multiple groups of inserting plates due to the fact that the gear is completely meshed with the multiple groups of inserting plates, the threaded pipe is convenient to rotate, and using flexibility is improved; the rotating rod can be rotated through the handle, so that the operation of workers is facilitated, and the labor is saved; when the threaded rod drives the supporting plate to move up and down, the supporting plate drives the left sliding rod and the sliding rod to slide up and down, when the left sliding rod and the right sliding rod move upwards until the left clamping plate and the right clamping plate are both contacted with the workbench, the left sliding rod and the right sliding rod cannot move upwards continuously, the phenomenon that the left sliding rod and the right sliding rod are separated from the workbench due to excessive rotation of the gear is reduced, and the use stability is improved; when the left clamping plate and the right clamping plate are both contacted with the grand table, the left rubber pad and the right rubber pad play a role in buffering, and the impact between the left clamping plate and the workbench and the impact between the right clamping plate and the workbench are reduced; after the handrail tube is machined, the handrail tube is taken down, the operating rod is drawn out from the rectangular groove, and the plurality of groups of bristles are utilized to clean the scraps on the top surface of the supporting plate; when the threaded pipe rotates, the threaded pipe drives the left clamping block and the right clamping block to rotate in the annular cavity through the left connecting rod, the right connecting rod, the left inserting rod and the right inserting rod, heat can be generated due to friction between the left clamping block and the annular cavity and generated by friction between the left clamping block and the annular cavity and the two groups of first rectangular holes and the two groups of second rectangular holes are convenient for dissipating the heat generated by friction, and the temperature rise of the bottom surface of the workbench due to friction is reduced; the radian of the supporting plate is consistent with that of the hand-held pipe to be processed, the contact area of the supporting plate and the hand-held pipe is increased, the abrasion of the contact position caused by the small contact area of the hand-held pipe and the supporting plate is reduced, and the influence on the quality of the hand-held pipe is reduced.

The utility model discloses used motor purchase in the market, according to the service instruction of wearing with use can.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A handrail tube grooving machine comprises a front fixing plate (1), a rear fixing plate (2), a workbench (3), a fixing shaft (4), blades (5), a rotating shaft (6), a motor (7) and four groups of supporting legs (8), wherein the bottom end of the front fixing plate (1) and the bottom end of the rear fixing plate (2) are respectively connected with the left front side and the left rear side of the top surface of the workbench (3), the rear end of the fixing shaft (4) is rotatably connected with the front right half area of the rear fixing plate (2), the front end of the fixing shaft (4) is connected with the rear central area of the blades (5), the rear end of the rotating shaft (6) is connected with the front central area of the blades (5), the front end of the rotating shaft (6) penetrates through the front fixing plate (1), the front end of the rotating shaft (6) is connected with the rear end output end of the motor (7), the motor (7) is detachably mounted on the front right half area of the front fixing plate (1), and the top, The left rear side, the right front side and the right rear side are connected; the device is characterized by further comprising a threaded rod (9), a left insert rod (10), a right insert rod (11), a left clamping block (12), a right clamping block (13), a left connecting rod (14), a right connecting rod (15), a threaded pipe (16), a supporting plate (17), a front baffle plate (18), a rear baffle plate (19), a left sliding rod (20) and a right sliding rod (21), wherein a first round hole is longitudinally formed in the central area of the workbench (3), the bottom end of the threaded rod (9) penetrates through the first round hole, an annular cavity is formed in the central area of the bottom surface of the workbench, an annular opening is formed in the central area of the bottom surface of the workbench (3) and communicated with the annular cavity, the top end of the left insert rod (10) and the top end of the right insert rod (11) are inserted into the annular cavity from the annular openings, the top end of the left insert rod (10) and the top end of the right insert rod (11) are respectively connected, the left end of the left connecting rod (14) and the right end of the right connecting rod (15) are respectively connected with the lower half area of the right side wall of the left inserted link (10) and the lower half area of the left side wall of the right inserted link (11), the right end of the left connecting rod (14) and the left end of the right connecting rod (15) are respectively connected with the upper half area of the left side wall of the threaded pipe (16) and the upper half area of the right side wall, the bottom end of the threaded rod (9) is screwed and penetrates through a threaded pipe (16), the top end of the threaded rod (9) is connected with the central area of the bottom surface of the supporting plate (17), the bottom surface of the front baffle (18) and the bottom surface of the rear baffle (19) are respectively connected with the front half area and the rear half area of the top surface of the supporting plate (17), the left half area and the right half area of the workbench (3) are respectively and longitudinally provided with a second round hole and a third round hole, the top end of the left sliding rod (20) and the top end of the right sliding rod (21) respectively penetrate through the second round hole and the third round hole, and the top end of the left sliding rod (20) and the top end of the right sliding rod (21) are respectively connected with the left half area and the right half area of the bottom surface of the supporting plate (17).

2. The handrail tube grooving machine according to claim 1, further comprising a ball bearing (22), a left stopper (23), a right stopper (24), a connecting shaft (25), a gear (26), a rotating rod (27) and a plurality of groups of insert plates (28), wherein a circular groove is formed in the right half area of the bottom surface of the worktable (3), the top end of the ball bearing (22) is inserted into the circular groove, the top ends of the left stopper (23) and the right stopper (24) are connected with the right half area of the bottom surface of the worktable (3), the top ends of the left stopper (23) and the right stopper (24) are contacted with the bottom end of the ball bearing (22), the top end of the connecting shaft (25) is inserted into the ball bearing (22) and connected with the ball bearing in an interference fit manner, the bottom end of the connecting shaft (25) is connected with the central area of the top surface of the gear (26), the top end of the rotating rod (27) is connected with the central area, one end of each group of inserting plates (28) is arranged on the outer side wall of the threaded pipe (16) at equal intervals, and the gear (26) is completely meshed with the groups of inserting plates (28).

3. A handrail tube grooving machine as claimed in claim 2, further comprising a handle (35), wherein the bottom end of the turning bar (27) is connected to a left half area of the top surface of the handle (35).

4. The handrail tube grooving machine according to claim 3, further comprising a left clamping plate (29) and a right clamping plate (30), wherein the bottom end of the left sliding rod (20) and the bottom end of the right sliding rod (21) are connected with the top end of the left clamping plate (29) and the top end of the right clamping plate (30), respectively.

5. The handrail tube grooving machine according to claim 4, further comprising a left rubber pad (31) and a right rubber pad, wherein a bottom surface of the left rubber pad (31) and a bottom surface of the right rubber pad are connected with a top surface of the left clamping plate (29) and a top surface of the right clamping plate (30), respectively.

6. The handrail tube grooving machine according to claim 5, further comprising an operating rod (32), a connecting plate (33), and a plurality of sets of bristles (34), wherein a rectangular groove is formed in the right side wall of the table (3), the left end of the operating rod (32) is inserted into the rectangular groove, the left end of the operating rod (32) is connected with the central region of the right side wall of the connecting plate (33), and the right ends of the plurality of sets of bristles (34) are connected with the left side wall of the connecting plate (33).

7. The handrail tube grooving machine according to claim 6, wherein the left half area and the right half area of the bottom surface of the table (3) are provided with two sets of first rectangular holes and two sets of second rectangular holes, respectively, the two sets of first rectangular holes being located on the left and right sides of the left insert bar (10), and the two sets of second rectangular holes being located on the left and right sides of the right insert bar (11).

8. The handrail tube grooving machine of claim 7, wherein the support plate (17) has an arc shape opening upward.

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