CN211940303U

CN211940303U - A lathe of polishing for special type motor processing

Info

Publication number: CN211940303U
Application number: CN202020532563.6U
Authority: CN
Inventors: 王子章; 王�忠
Original assignee: Nantong Dade Electric Co ltd
Current assignee: Nantong Dade Electric Co ltd
Priority date: 2020-04-11
Filing date: 2020-04-11
Publication date: 2020-11-17
Anticipated expiration: 2030-04-11

Abstract

The utility model discloses a grinding machine tool for special motor processing, which relates to the technical field of motor processing and comprises a machine base and a clamping and rotating mechanism arranged on the machine base, wherein a fixing device for fixing abrasive paper is arranged on the machine base; the fixing device comprises a material discharging mechanism arranged on the base and positioned on one side of the clamping and rotating mechanism and a winding mechanism arranged at intervals with the material discharging mechanism; one end of the abrasive paper is fixed on the discharging mechanism, the other end of the abrasive paper is fixed on the winding mechanism, and the length direction of the abrasive paper is perpendicular to the rotation center line of the clamping and rotating mechanism. The utility model discloses the effect that conveniently polishes the rotor has.

Description

A lathe of polishing for special type motor processing

Technical Field

The utility model belongs to the technical field of the motor processing technique and specifically relates to a lathe of polishing for special motor processing is related to.

Background

At present, in the production process of the motor rotor, the surface of the motor rotor needs to be subjected to finish machining, and the surface is deburred.

The device that current was polished to rotor generally is pegged graft the one end of rotor in chucking device, and chucking device rotates and drives the rotor and rotate, aims at the rotor through the manual work again with abrasive paper and polishes, polishes the rotor through artifical handheld abrasive paper, and the distance uncontrollable of handheld abrasive paper and rotor can lead to easily polishing excessively, influences final finished product quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lathe of polishing for special type electric machine processing, it can conveniently polish to the rotor.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a grinding machine tool for processing a special motor comprises a base and a clamping and rotating mechanism arranged on the base, wherein a fixing device for fixing abrasive paper is arranged on the base; the fixing device comprises a material discharging mechanism arranged on the base and positioned on one side of the clamping and rotating mechanism and a winding mechanism arranged at intervals with the material discharging mechanism; one end of the abrasive paper is fixed on the discharging mechanism, the other end of the abrasive paper is fixed on the winding mechanism, and the length direction of the abrasive paper is perpendicular to the rotation center line of the clamping and rotating mechanism.

Through adopting above-mentioned technical scheme, set up fixing device, can conveniently fix abrasive paper for can keep the same distance between abrasive paper and the rotor, when centre gripping rotary mechanism drove the rotor and rotates, abrasive paper can be even to the rotor ground of polishing, has improved the quality of polishing to product processing. Set up drop feed mechanism, can cover one side book of abrasive paper on drop feed mechanism, be fixed in the opposite side of abrasive paper on the winding mechanism again, after the working face of abrasive paper and rotor contact was polished for a period of time, can roll up one section abrasive paper after will polishing through the winding mechanism for a new section abrasive paper that does not polish can polish the rotor again.

The present invention may be further configured in a preferred embodiment as: the discharging mechanism comprises a discharging frame arranged on the base and a fixing piece arranged on the discharging frame and used for fixing abrasive paper; the winding mechanism comprises two winding frames which are arranged on the machine base at intervals, a winding roller arranged between the two winding frames and connecting shafts arranged at two ends of the winding roller; the winding roller comprises two half rollers, and the end parts of the two half rollers are fixed through fixing bolts; the axis of the connecting shaft is superposed with the axis of the winding roller, and the two connecting shafts are respectively in rotating connection with the two winding frames; and a handle is arranged at the end part of one connecting shaft, and a positioning piece for limiting the rotation of the winding roller is arranged at the end part of the other connecting shaft.

Through adopting above-mentioned technical scheme, set up the mounting, be convenient for be fixed in the blowing roller with one section of abrasive paper on, when need not changing abrasive paper, it is fixed with abrasive paper through the mounting. Through two half rollers, can be fixed in two half rollers with the opposite side of abrasive paper for the both ends of abrasive paper are fixed, can improve the effect of polishing to the rotor. Set up the setting element, use with the mounting cooperation, when needs are changed abrasive paper, loosen the setting element, can rotate the wind-up roll through rotating the handle, make the wind-up roll get up abrasive paper, loosen the mounting simultaneously, make the blowing roller can rotate, emit new abrasive paper, make abrasive paper and rotor contact's working face update the back, the rethread mounting is fixed abrasive paper, fix the wind-up roll through the setting element.

The present invention may be further configured in a preferred embodiment as: a fixed rod for sleeving a sand paper roll is arranged on one side of the winding frame, and the length direction of the fixed rod is parallel to the rotation axis of the clamping and rotating mechanism; the fixing piece comprises a threaded rod arranged on the winding frame and positioned on one side of the discharging roller, a fixing sleeve sleeved on the threaded rod, a connecting rod fixed on one side of the fixing sleeve and an arc-shaped plate arranged at the lower end of the connecting rod and attached to abrasive paper on the winding roller; and the threaded rod is provided with locking nuts which are in threaded connection with the upper end and the lower end of the fixed sleeve.

Through adopting above-mentioned technical scheme, set up the dead lever, and fixed cover sleeve locates on the dead lever, through adjusting two lock nut, can adjust the distance of arc and blowing roller to can realize fixed and unclamping abrasive paper.

The present invention may be further configured in a preferred embodiment as: the positioning piece comprises a gear arranged on the connecting shaft, a bracket arranged at the end part of the connecting shaft and a fixing part arranged on the bracket; the bracket is provided with a round hole; a fixing column is inserted in the round hole; the upper end of the fixed column is provided with a strip-shaped block, and the lower end of the fixed column is provided with a rack meshed with the gear; a spring is sleeved on the fixed column and positioned between the bracket and the rack; the fixing part comprises two fixing plates which are arranged on the upper end surface of the bracket and are respectively positioned on two sides of the round hole; the upper end surfaces of the two fixing plates are provided with clamping grooves matched with the strip-shaped blocks.

Through adopting above-mentioned technical scheme, when not needing the connecting axle to rotate, the lower terminal surface of bar-shaped piece and the up end butt of support for under the effect of spring, make rack and gear engagement, make the connecting axle can not rotate, thereby avoid the wind-up roll to rotate. When needs carry out the rolling to abrasive paper, through promoting the bar-shaped piece, rotate 90 degrees with the bar-shaped piece again for the both ends joint of bar-shaped piece is in the draw-in groove, makes the lower extreme of rack break away from with the meshing of gear, thereby makes the connecting axle can rotate.

The present invention may be further configured in a preferred embodiment as: the lower terminal surface of arc is equipped with the rubber pad with sand paper roller laminating.

Through adopting above-mentioned technical scheme, set up the rubber pad at the lower terminal surface of arc, can increase the frictional force with abrasive paper, improve the fixed effect to abrasive paper, and can reduce the damage to abrasive paper.

The present invention may be further configured in a preferred embodiment as: the lower ends of the material placing frame and the winding frame are respectively provided with a first supporting leg and a second supporting leg which are adjustable.

Through adopting above-mentioned technical scheme, set up first landing leg and second landing leg with adjustable, can conveniently adjust the height of blowing frame and rolling frame, be favorable to adapting to the height of rotor for abrasive paper can contact with the rotor better, plays the effect of polishing better.

The present invention may be further configured in a preferred embodiment as: the first support leg comprises a first fixed seat fixed on the upper end surface of the base, a first support column fixed on the upper end surface of the first fixed seat and a first adjusting column in sliding fit with the first support column; the upper end surface of the first supporting column is provided with a first sliding chute matched with the first adjusting column; two sides of the first supporting column are provided with first strip-shaped holes communicated with the first sliding grooves; the first sliding groove and the first strip-shaped hole extend along the height direction of the first support leg; the first support column and the first adjusting column are fixed together by a first adjusting bolt penetrating through the first strip-shaped hole; the upper end of the first adjusting column is fixed below the material placing frame.

Through adopting above-mentioned technical scheme, set up the area of contact that first fixing base can increase and the frame for blowing frame and rolling frame can place ground more stably. The form that sets up first regulation post and first support column grafting can improve the support intensity of first leg, and offers first bar hole through the both sides at first support column, can conveniently adjust the back and fix first regulation post, and the regulation mode is simple quick, and stable in structure is reliable.

The present invention may be further configured in a preferred embodiment as: the second supporting leg comprises a second fixed seat fixed on the upper end surface of the machine base, a second supporting plate fixed on the upper end surface of the second fixed seat and a second adjusting plate in sliding fit with the second supporting plate; the upper end surface of the second supporting plate is provided with a second sliding groove matched with the second adjusting plate; two sides of the second supporting plate are provided with second strip-shaped holes communicated with the second sliding grooves; the second sliding groove and the second strip-shaped hole extend along the height direction of the second supporting leg; the second supporting plate and the second adjusting plate penetrate through the second strip-shaped hole through a second adjusting bolt to be fixed together; the upper end of the second adjusting plate is fixed below the winding frame.

Through adopting above-mentioned technical scheme, set up the area of contact that the second fixing base can increase and the frame for blowing frame and rolling frame can place ground more stably. The form that sets up second regulating plate and second backup pad and peg graft can improve the support intensity of second landing leg, and offers the second bar hole through the both sides at the second backup pad, can conveniently adjust the back and fix the second regulating plate, and the regulative mode is simple quick, and stable in structure is reliable.

To sum up, the utility model discloses following beneficial effect has:

1. the fixing device is arranged, so that the abrasive paper can be conveniently fixed, the same distance can be kept between the abrasive paper and the rotor, when the clamping and rotating mechanism drives the rotor to rotate, the abrasive paper can uniformly polish the rotor, and the product processing and polishing quality is improved;

2. the fixing piece is arranged, so that one section of the abrasive paper can be conveniently fixed on the discharging roller, when the abrasive paper does not need to be replaced, the abrasive paper is fixed through the fixing piece, the other side of the abrasive paper can be fixed in the two half rollers through the two half rollers, the two ends of the abrasive paper are fixed, and the grinding effect of the rotor can be improved;

3. set up first landing leg and second landing leg with adjustable, can conveniently adjust the height of blowing frame and rolling frame, be favorable to adapting to the height of rotor for abrasive paper can contact with the rotor better, plays the effect of polishing better.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view of a fastener construction according to an embodiment;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Reference numerals: 1. a machine base; 2. a clamping and rotating mechanism; 3. a fixing device; 4. a discharging mechanism; 41. a material placing frame; 42. a fixing member; 421. a threaded rod; 422. fixing a sleeve; 423. a connecting rod; 424. an arc-shaped plate; 425. a rubber pad; 426. locking the nut; 43. fixing the rod; 44. fixing a nut; 5. a winding mechanism; 51. a winding frame; 52. a wind-up roll; 521. half a roll; 53. a connecting shaft; 54. a handle; 55. a positioning member; 551. a gear; 552. a support; 553. a fixed part; 554. fixing a column; 555. a bar-shaped block; 556. a rack; 557. a spring; 558. a fixing plate; 559. a card slot; 6. a first leg; 61. a first fixed seat; 62. a first support column; 63. a first conditioning column; 64. a first chute; 65. a first bar-shaped hole; 66. a first adjusting bolt; 7. a second leg; 71. a second fixed seat; 72. a second support column; 73. a second conditioning column; 74. a second chute; 75. a second bar-shaped hole; 76. and a second adjusting bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a grinding machine for special type electric machine processing, including frame 1 and fixed mounting the centre gripping rotary mechanism 2 on frame 1. The clamping and rotating mechanism 2 comprises a three-jaw chuck for clamping the rotor and a driving motor for driving the three-jaw chuck to rotate.

Referring to fig. 1, in order to conveniently fix sandpaper to polish a rotor, a fixing device 3 is fixedly installed on a base 1. The fixing device 3 comprises a discharging mechanism 4 and a winding mechanism 5. The discharging mechanism 4 is fixedly arranged on the machine base 1 and is positioned at one side of the clamping rotating mechanism 2. The winding mechanism 5 is fixedly arranged on the machine base 1 and is arranged at intervals with the discharging mechanism 4. One end of the abrasive paper is fixed and wound on the discharging mechanism 4, the other end of the abrasive paper is fixed on the winding mechanism 5, and the length direction of the abrasive paper is perpendicular to the rotating center line of the clamping and rotating mechanism 2.

Referring to fig. 1 and 2, the discharging mechanism 4 includes a discharging frame 41 and a fixing member 42. The material placing frame 41 is fixedly arranged on the machine base 1. A horizontally arranged fixing rod 43 is fixed on one side of the material placing frame 41, and the length direction of the fixing rod 43 is parallel to the rotation axis of the clamping and rotating mechanism 2. One end of the fixing rod 43, which is far away from the discharging frame 41, is tapped with a section of external thread, and the fixing rod 43 is in threaded connection with a fixing nut 44.

Referring to fig. 2, the fixing member 42 is mounted on the discharging frame 41. The fixing member 42 includes a threaded rod 421, a fixing sleeve 422, a connecting rod 423, and an arc plate 424. The threaded rod 421 is vertically fixed on the winding frame 51 and is located on one side of the discharging roller. The threaded rod 421 is provided with locking nuts 426 at both upper and lower ends of the fixing sleeve 422 for limiting the position of the fixing sleeve 422. The fixing sleeve 422 is sleeved on the threaded rod 421. The connecting rod 423 is an L-shaped rod, and the connecting rod 423 is fixed to one side of the fixing sleeve 422 and horizontally extends in a direction away from the threaded rod 421. The arc plate 424 is fixed to the lower end of the connecting rod 423, and the lower end face of the arc plate 424 is attached to the sandpaper wound on the upper side of the winding roller 52. In order to enhance the frictional force between the curved plate 424 and sandpaper, a rubber pad 425 attached to the surface of the sandpaper is bonded to the lower end surface of the curved plate 424.

Referring to fig. 1, the winding mechanism 5 includes two winding frames 51, a winding roller 52, and a connecting shaft 53. The winding frames 51 are fixedly arranged on the machine base 1, and the two winding frames 51 are arranged at intervals along the length direction of the machine base 1. The take-up roller 52 is rotatably disposed between the two take-up frames 51. The wind-up roller 52 includes two half rollers 521, and ends of the two half rollers 521 are fixed by fixing bolts. The two connecting shafts 53 are provided, and the two connecting shafts 53 are respectively fixed to both ends of the half roller 521 located below. The axis of the connecting shaft 53 coincides with the axis of the winding roller 52, and the two connecting shafts 53 are respectively connected with the two winding frames 51 in a rotating manner. A handle 54 is fixedly mounted on the end of one connecting shaft 53, and a positioning member 55 is fixedly mounted on the end of the other connecting shaft 53 for limiting the rotation of the take-up roll 52.

Referring to fig. 1 and 3, the positioning member 55 includes a gear 551, a bracket 552, and a fixing portion 553. The gear 551 is fixed on the connecting shaft 53 and is close to one end of the connecting shaft 53, which is far away from the winding frame 51. The bracket 552 has an L-shaped cross section, and the bracket 552 is fixedly mounted on the end of the connecting shaft 53. The horizontal part of the support 552 extends to one side close to the winding roller 52, and a circular hole is formed in the upper end surface of the horizontal part of the support 552. A fixing column 554 is inserted in the round hole, a strip-shaped block 555 is fixed at the upper end of the fixing column 554, and a rack 556 meshed with the gear 551 is fixed at the lower end of the fixing column 554 after penetrating through the round hole. The rack gear 556 is disposed spaced apart from the vertical portion of the bracket 552. A spring 557 is sleeved on the fixing post 554 and located between the bracket 552 and the rack 556. The fixing portion 553 is fixedly mounted to an upper end surface of the horizontal portion of the bracket 552. The fixing portion 553 includes two fixing plates 558, the two fixing plates 558 are fixed on the upper end surface of the horizontal portion of the bracket 552, and the two fixing plates 558 are respectively located at both sides of the circular hole. The upper end surfaces of the two fixing plates 558 are provided with clamping grooves 559 matched with the two ends of the bar-shaped block 555, so that the bar-shaped block 555 can be placed conveniently.

Referring to fig. 1, in order to adjust the heights of the discharging mechanism 4 and the winding mechanism 5, an adjustable first leg 6 and an adjustable second leg 7 are respectively fixed at the lower ends of the discharging frame 41 and the winding frame 51.

Referring to fig. 1, the first leg 6 includes a first fixing seat 61, a first support column 62, and a first adjusting column 63. The first fixing seat 61 is fixed on the upper end surface of the machine base 1 through bolts. The first support column 62 is fixed to the upper end surface of the first fixing seat 61. The upper end surface of the first supporting column 62 is provided with a first sliding chute 64 matched with the first adjusting column 63. The first support column 62 is provided with first strip-shaped holes 65 on two sides thereof, which are communicated with the first sliding grooves 64. The first runner 64 and the first strip-shaped hole 65 each extend in the height direction of the first leg 6. The upper end of the first adjusting column 63 is fixed below the material placing frame 41. The first support post 62 and the first adjustment post 63 are secured together by a first adjustment bolt 66 passing through the first strip aperture 65.

Referring to fig. 1, the second leg 7 includes a second fixing seat 71, a second support plate, and a second adjustment plate. The second fixing seat 71 is fixed to the upper end surface of the base 1 by bolts. The second supporting plate is fixed to the upper end surface of the second fixing seat 71. The upper end surface of the second supporting plate is provided with a second sliding chute 74 matched with the second adjusting plate. The two sides of the second support plate are provided with second strip-shaped holes 75 communicated with the second sliding grooves 74. The second runner 74 and the second strip-shaped hole 75 both extend in the height direction of the second leg 7. The upper end of the second adjusting plate is fixed with the lower part of the winding frame 51. The second support plate and the second adjustment plate are fixed together by a second adjustment bolt 76 passing through a second strip hole 75.

The implementation principle of the embodiment is as follows: sleeving the abrasive paper roller on the fixing rod 43 from one end of the fixing rod 43, and fixing the abrasive paper roller on the fixing rod 43 through the fixing nut 44; one side of the abrasive paper roll is drawn to the wind-up roll 52, and one end of the abrasive paper is fixed through the two half rolls 521. After sand paper uses a period of time and needs to be changed, at first will be located the lock nut 426 of top and twist for fixed cover 422 can upwards move along threaded rod 421, and the lock nut 426 that will be located the below upwards twists again, makes two lock nuts 426 and the both sides laminating of fixed cover 422, thereby realizes upwards moving the position of fixed cover 422, makes the arc 424 break away from the laminating with sand paper, and the sand paper roller can rotate along dead lever 43. And then the strip-shaped block 555 is lifted and rotated, so that two ends of the strip-shaped block 555 are inserted into the clamping grooves 559, the rack 556 is disengaged from the gear 551, and the winding roller 52 can rotate. The winding roller 52 is rotated by the handle 54, so that the working surface of the sandpaper is replaced, and the worn sandpaper is wound on the winding roller 52. Finally, the bar-shaped block 555 is lifted and rotated, so that the lower end surface of the bar-shaped block 555 is fitted with the upper end surface of the bracket 552, and the rack 556 is meshed with the gear 551. The locking bolt located below is screwed so that it moves downward, and the locking bolt located above is screwed so that the lower end surface of the arc plate 424 can fix the sandpaper.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a lathe of polishing for special type electric machine processing, includes frame (1), locates centre gripping rotary mechanism (2) on frame (1), its characterized in that: a fixing device (3) for fixing abrasive paper is arranged on the base (1); the fixing device (3) comprises a material discharging mechanism (4) arranged on the base (1) and positioned on one side of the clamping and rotating mechanism (2) and a winding mechanism (5) arranged at intervals with the material discharging mechanism (4); one end of the abrasive paper is fixed on the discharging mechanism (4), the other end of the abrasive paper is fixed on the winding mechanism (5), and the length direction of the abrasive paper is perpendicular to the rotating center line of the clamping and rotating mechanism (2).

2. A grinding machine for special motor machining according to claim 1, characterized in that: the discharging mechanism (4) comprises a discharging frame (41) arranged on the base (1) and a fixing piece (42) arranged on the discharging frame (41) and used for fixing abrasive paper; the winding mechanism (5) comprises two winding frames (51) which are arranged on the machine base (1) at intervals, a winding roller (52) which is arranged between the two winding frames (51) and connecting shafts (53) which are arranged at two ends of the winding roller (52); the winding roller (52) comprises two half rollers (521), and the end parts of the two half rollers (521) are fixed through fixing bolts; the axis of the connecting shaft (53) is superposed with the axis of the winding roller (52), and the two connecting shafts (53) are respectively connected with the two winding frames (51) in a rotating way; the end part of one connecting shaft (53) is provided with a handle (54), and the end part of the other connecting shaft (53) is provided with a positioning piece (55) for limiting the rotation of the winding roller (52).

3. A grinding machine for special motor machining according to claim 2, characterized in that: a fixing rod (43) for sleeving a sand paper roller is arranged on one side of the winding frame (51), and the length direction of the fixing rod (43) is parallel to the rotation axis of the clamping and rotating mechanism (2); the fixing piece (42) comprises a threaded rod (421) arranged on the winding frame (51) and positioned on one side of the discharging roller, a fixing sleeve (422) sleeved on the threaded rod (421), a connecting rod (423) fixed on one side of the fixing sleeve (422), and an arc-shaped plate (424) arranged at the lower end of the connecting rod (423) and attached to the abrasive paper on the winding roller (52); and the upper end and the lower end of the threaded rod (421) which are positioned on the fixed sleeve (422) are both in threaded connection with locking nuts (426).

4. A grinding machine for special motor machining according to claim 2, characterized in that: the positioning piece (55) comprises a gear (551) arranged on the connecting shaft (53), a bracket (552) arranged at the end part of the connecting shaft (53) and a fixing part (553) arranged on the bracket (552); a round hole is formed in the bracket (552); a fixing column (554) is inserted in the round hole; a strip block (555) is arranged at the upper end of the fixed column (554), and a rack (556) meshed with the gear (551) is arranged at the lower end of the fixed column (554); a spring (557) is sleeved on the fixing column (554) and positioned between the bracket (552) and the rack (556); the fixing part (553) comprises two fixing plates (558) which are arranged on the upper end surface of the support (552) and are respectively positioned on two sides of the round hole; the upper end surfaces of the two fixing plates (558) are provided with clamping grooves (559) matched with the strip-shaped blocks (555).

5. A grinding machine for special motor machining according to claim 3, characterized in that: and a rubber pad (425) jointed with the sand paper roller is arranged on the lower end surface of the arc-shaped plate (424).

6. A grinding machine for special motor machining according to claim 2, characterized in that: the lower ends of the material placing frame (41) and the winding frame (51) are respectively provided with a first supporting leg (6) and a second supporting leg (7) which are adjustable.

7. A grinding machine for special motor machining according to claim 6, characterized in that: the first supporting leg (6) comprises a first fixed seat (61) fixed on the upper end surface of the base (1), a first supporting column (62) fixed on the upper end surface of the first fixed seat (61), and a first adjusting column (63) in sliding fit with the first supporting column (62); the upper end surface of the first supporting column (62) is provided with a first sliding chute (64) matched with the first adjusting column (63); two sides of the first supporting column (62) are provided with first strip-shaped holes (65) communicated with the first sliding groove (64); the first sliding groove (64) and the first strip-shaped hole (65) both extend along the height direction of the first supporting leg (6); the first supporting column (62) and the first adjusting column (63) are fixed together by a first adjusting bolt (66) penetrating through the first strip-shaped hole (65); the upper end of the first adjusting column (63) is fixed below the material placing frame (41).

8. A grinding machine for special motor machining according to claim 6, characterized in that: the second supporting leg (7) comprises a second fixed seat (71) fixed on the upper end surface of the machine base (1), a second supporting plate fixed on the upper end surface of the second fixed seat (71) and a second adjusting plate in sliding fit with the second supporting plate; a second sliding groove (74) matched with the second adjusting plate is formed in the upper end face of the second supporting plate; two sides of the second supporting plate are provided with second strip-shaped holes (75) communicated with the second sliding grooves (74); the second sliding groove (74) and the second strip-shaped hole (75) both extend along the height direction of the second supporting leg (7); the second supporting plate and the second adjusting plate are fixed together by a second adjusting bolt (76) penetrating through a second strip-shaped hole (75); the upper end of the second adjusting plate is fixed below the winding frame (51).