Internal buckling type grinding head motor

Abstract

The utility model provides an inner buckle type grinding head motor which comprises a motor body provided with a spline output shaft and an installation panel and a transmission case, the transmission case comprises an outer case body provided with an inner case chamber, and the top surface of the outer case body is provided with a top hole communicated with the inner case chamber. The top face of the outer box body is provided with a top cover which seals the top hole, the top of the top cover is connected with the mounting panel, a connecting hole is formed in the end face, facing the inner box chamber, of the top cover, a first-stage bevel gear shaft which extends into the connecting hole and is coaxially connected with the spline output shaft is rotationally arranged in the inner box chamber, and a side hole communicated with the inner box chamber is formed in the side wall of the outer box body. And a secondary bevel gear shaft meshed with the primary bevel gear shaft is rotationally arranged in the side hole. According to the internally-buckled grinding wheel motor, the transmission case with the first-stage bevel gear shaft and the second-stage bevel gear shaft is arranged, so that the grinding wheel is laterally arranged, and a workpiece on the side face of the grinding head motor can be ground.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grinding head motor especially to an inner buckle type grinding head motor. BACKGROUND

[0002] Grinding head motor is a kind of motor applied to grinding tool, for driving grinding head to carry out grinding operation.Grinding head motor has multiple types and specifications, and its performance and characteristics are also different.For example, some grinding head motors adopt high-quality carbon brush and high-speed rotor, which can provide high rotation speed and stable grinding effect;while other grinding head motors adopt brushless motor technology, which can reduce dust flying and keep working environment clean.

[0003] The existing Chinese patent with the authorization announcement number CN211805540U discloses a kind of grinding head motor, including motor, machine base, transmission shaft, bearing and grinding wheel seat, machine base is cylindrical, its both ends are open, the rear end of this machine base is fixed with the shaft end of motor so that the shaft of the motor extends into machine base, transmission shaft is located in machine base, its rear end is connected with shaft, front end extends from the front end of machine base, the outer ring of bearing is fixed with machine base, the inner ring is passed by transmission shaft and is fixed, grinding wheel seat is fixed with the front end of transmission shaft.

[0004] The prior art in the above-mentioned has the following defects: when the grinding head motor works, the grinding wheel is installed on the grinding wheel seat, and the grinding wheel motor can drive the grinding head to perform grinding operation on the workpiece located in front of the grinding head motor, but it is difficult to perform grinding operation on the workpiece located on the side of the grinding head motor. UTILITY MODEL CONTENTS

[0005] The problem to be solved by the utility model is to provide an inner buckle type grinding head motor to solve the problem of difficulty in performing grinding operation on the workpiece located on the side of the grinding head motor in the prior art.

[0006] The above-mentioned utility model of the utility model is realized through the following technical scheme: an inner buckle type grinding head motor, including motor body with spline output shaft and mounting panel, transmission box, the transmission box includes outer box body with inner box chamber, a top hole is formed in the top surface of the outer box body and communicated with the inner box chamber, a top cover is arranged on the top surface of the outer box body and closes the top hole, the top cover is connected with the mounting panel at the top, a connecting hole is formed in the end surface of the top cover facing the inner box chamber, a primary bevel gear shaft is rotatably arranged in the inner box chamber and extends into the connecting hole and is coaxially connected with the spline output shaft, a side hole is formed in the side wall of the outer box body and communicated with the inner box chamber, a secondary bevel gear shaft is rotatably arranged in the side hole and engaged with the primary bevel gear shaft.

[0007] The utility model is further provided as follows: a top plug ring is arranged on the end surface of the top cover facing the outer box body, and the top plug ring is plug-in matched with the top hole.

[0008] The utility model further sets up: the top cover is towards the end surface of inner box chamber and is equipped with top groove with the coaxial connecting hole, the top groove is inlayed and is equipped with the top bearing of being sleeved on the first bevel gear shaft.

[0009] The utility model further sets up: the outer side wall of outer box body is equipped with bottom hole with inner box chamber, the outer side wall of outer box body is equipped with bottom cover and is closed bottom hole, the end surface of bottom cover is towards inner box chamber and is equipped with bottom groove, the bottom groove is inlayed and is equipped with the bottom bearing of being sleeved on the first bevel gear shaft.

[0010] The utility model further sets up: the end surface of bottom cover is towards outer box body and is equipped with bottom plug ring, bottom plug ring is inserted with bottom hole and cooperates.

[0011] The utility model further sets up: the side wall of outer box body is equipped with side cover and is closed side hole, the end surface of side cover is towards inner box chamber and is equipped with side inner groove, connecting hole, side outer groove in turn to the direction of being away from inner box chamber for the second bevel gear shaft, the side inner groove is inlayed and is equipped with the side inner bearing of being sleeved on the second bevel gear shaft, the side outer groove is inlayed and is equipped with the side outer bearing of being sleeved on the second bevel gear shaft.

[0012] The utility model further sets up: the end surface of side cover is away from outer box body and is equipped with quick -witted convex post, the end surface of quick -witted convex post is away from side cover and is equipped with quick -witted insertion slot, the outer side wall of quick -witted convex post is equipped with quick -witted card hole, the side of side cover is away from outer box body and is equipped with bearing pressing cover and is pressed tightly fixed in side inner groove for side outer bearing, the middle part of bearing pressing cover is equipped with cover perforation and is passed for the second bevel gear shaft, the end surface of bearing pressing cover is towards quick -witted convex post and is equipped with quick -witted insertion column and is inserted with quick -witted insertion slot, the inside column cavity is opened in quick -witted insertion column, the outer side wall of quick -witted insertion column is equipped with slide buckle hole, every quick -witted slide buckle is slidably arranged in slide buckle hole, the inside column cavity is equipped with push buckle mechanism and controls quick -witted slide buckle along slide buckle hole and does reciprocating sliding movement.

[0013] The utility model further sets up: the end surface of quick -witted insertion column is towards side cover and is equipped with the guide opening and is communicated with inside column cavity, the push buckle mechanism includes the push buckle cross rod of being movably arranged at the center place of inside column cavity and passing through the guide opening, a plurality of articulated tables and push buckle rods of being arranged on the outer side wall of push buckle cross rod, one end of push buckle rod is articulated with quick -witted slide buckle, the other end is articulated with articulated table, the articulated point of push buckle rod and quick -witted slide buckle is located the articulated point of push buckle rod and articulated table and is away from the one side of guide opening.

[0014] The utility model further sets up: the outer side wall of push buckle cross bar is provided with the guide plate who is in sliding cooperation with inner column cavity, the outer side wall of quick -witted joint is set up with the quick -witted joint lock hole who communicates with inner column cavity, the quick -witted joint lock hole is located quick -witted joint card hole far away from the side of guide opening, the outer side wall of guide plate is set up with the slide buckle groove, the slide buckle groove is provided with quick -witted joint lock buckle and is slid, the slide buckle groove is provided with push buckle spring, push buckle spring one end is connected with quick -witted joint lock buckle, and the other end is connected with the bottom wall of slide buckle groove.

[0015] The utility model further sets up: the end face of guide plate is away from guide opening and is provided with the return spring of part of sleeve setting on push buckle cross bar between the groove wall of inner column cavity far away from guide opening.

[0016] Summarized above, the beneficial technical effect of the utility model is:

[0017] (1) this inner buckle type abrasive wheel motor is through setting up with the transmission case of one -level bevel gear shaft and two -level bevel gear shaft, realizes the side of abrasive wheel, then can carry out grinding work to the workpiece of abrasive head motor side face;

[0018] (2) the connecting mode of quick -witted joint inner buckle type is used between the bearing gland and side cover of this inner buckle type abrasive head motor, is favorable for promoting the dismounting speed of bearing gland, promotes the installation efficiency of bearing gland. ACCURACY OF DRAWINGS

[0019] Figure 1 It is the structure schematic diagram of the inner buckle type abrasive head motor in the utility model;

[0020] Figure 2 It is the partial section view of transmission case in the utility model;

[0021] Figure 3 It is the partial section view of transmission case in the utility model;

[0022] Figure 4 It is Figure 3 the enlarged view of A in

[0023] In the above attached diagrams: 1. Motor body; 2. Splined output shaft; 3. Mounting panel; 4. Transmission box; 5. Outer housing; 6. Inner chamber; 7. Top hole; 8. Bottom hole; 9. Side hole; 10. Top cover; 11. Top insert ring; 12. Top groove; 13. Connecting hole; 14. Top bearing; 15. Bottom cover; 16. Bottom insert ring; 17. Bottom groove; 18. Bottom bearing; 19. Primary bevel gear shaft; 20. Splined hole; 21. Side cover; 22. Side insert ring; 23. Side inner groove; 24. Through hole; 25. Side outer groove; 26. Secondary... 27. Bevel gear shaft; 28. Side inner bearing; 29. ​​Side outer bearing; 30. Wheel mounting shaft; 31. Quick-connect protrusion; 32. Quick-connect slot; 33. Quick-connect locking hole; 34. Bearing cap; 35. Cap through hole; 36. Quick-connect insert; 37. Inner cylinder cavity; 38. Guide opening; 39. Sliding hole; 40. Quick-connect sliding buckle; 41. Push buckle crossbar; 42. Hinge platform; 43. Push buckle rod; 44. Guide plate; 45. Return spring; 46. Quick-connect locking hole; 47. Sliding groove; 48. Quick-connect locking buckle; 49. Push buckle spring. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, this utility model proposes an internally clipped grinding head motor, including a motor body 1 with a splined output shaft 2 and a mounting panel 3, and a transmission box 4.

[0026] like Figure 2 As shown, the transmission box 4 includes an outer box 5 with an inner box 6. A top hole 7 communicating with the inner box 6 is provided on the top surface of the outer box 5, a bottom hole 8 communicating with the inner box 6 is provided on the bottom surface of the outer box 5, and a side hole 9 communicating with the inner box 6 is provided on the side wall of the outer box 5.

[0027] like Figure 2 As shown, a top cover 10, which seals the top hole 7, is screwed onto the top surface of the outer casing 5. The top cover 10 is I-shaped, and its top is bolted to the mounting panel 3 of the motor body 1. A top insertion ring 11 is integrally connected to the end face of the top cover 10 facing the outer casing 5. The top insertion ring 11 is circular and engages with the top hole 7.

[0028] like Figure 2 As shown, a top groove 12 and a connecting hole 13 are sequentially opened on the end face of the top cover 10 facing the inner chamber 6 in the direction away from the inner chamber 6. The cross-sections of the top groove 12 and the connecting hole 13 are both circular. The top groove 12 and the connecting hole 13 are coaxial. The diameter of the connecting hole 13 is smaller than the diameter of the top groove 12. A top bearing 14 is embedded in the top groove 12.

[0029] As Figure 2 shown, the bottom surface of the outer box body 5 is screw connected with a bottom cover 15 which closes the bottom hole 8, the end surface of the bottom cover 15 towards the outer box body 5 is integrally connected with a circular ring-shaped bottom plug ring 16 which is plugged with the bottom hole 8. The end surface of the bottom cover 15 towards the inner box chamber 6 is provided with a bottom groove 17, the cross section of the bottom groove 17 is circular, and the bottom groove 17 is embedded with a bottom bearing 18.

[0030] As Figure 2 shown, the inner box chamber 6 is rotationally provided with a primary bevel gear shaft 19, the end of the primary bevel gear shaft 19 close to the top cover 10 passes through the top groove 12 and extends into the connecting hole 13, the end surface of the primary bevel gear shaft 19 towards the motor body 1 is provided with a spline hole 20, and the output shaft of the motor body 1 is plugged with the spline hole 20. The top bearing 14 and the bottom bearing 18 are both sleeved on the primary bevel gear shaft 19, and the top bearing 14 and the bottom bearing 18 are used to jointly support the rotation of the primary bevel gear shaft 19, so that the primary bevel gear shaft 19 can stably rotate.

[0031] As Figure 2 and 3 shown, the side wall of the outer box body 5 is screw connected with a side cover 21 which closes the side hole 9, and the end surface of the side cover 21 towards the outer box body 5 is integrally connected with a side plug ring 22 which is plugged with the side hole 9. The end surface of the side cover 21 towards the inner box chamber 6 is sequentially provided with a side inner groove 23, a through hole 24 and a side outer groove 25 in the direction away from the inner box chamber 6, the cross sections of the side inner groove 23, the through hole 24 and the side outer groove 25 are all circular, and the diameters of the side inner groove 23 and the side outer groove 25 are both larger than the hole diameter of the through hole 24.

[0032] As Figure 2 and 3 shown, the side hole 9 is rotationally provided with a secondary bevel gear shaft 26 which is engaged with the primary bevel gear shaft 19, the through hole 24 is provided with the secondary bevel gear shaft 26, the bevel gears of the secondary bevel gear shaft 26 are engaged with the bevel gears of the primary bevel gear shaft 19, the side inner groove 23 is embedded with a side inner bearing 27, and the side outer groove 25 is embedded with a side outer bearing 28, the side inner bearing 27 and the side outer bearing 28 are both sleeved on the secondary bevel gear shaft 26, and the side inner bearing 27 and the side outer bearing 28 are used to jointly support the rotation of the secondary bevel gear shaft 26, so that the secondary bevel gear shaft 26 can stably rotate.

[0033] As Figure 3 shown, the end of the secondary bevel gear shaft 26 away from the outer box body 5 is coaxially provided with a wheel shaft 29, and the wheel shaft 29 has external threads. When the grinding wheel is sleeved on the wheel shaft 29, the nut is screwed in to press and fix the grinding wheel on the secondary bevel gear shaft 26.

[0034] The detailed working process of this embodiment is as follows: the motor body 1 drives the first-stage bevel gear shaft 19 to rotate through the spline output shaft 2 which is splinedly connected to the first-stage bevel gear shaft 19. Since the first-stage bevel gear shaft 19 meshes with the second-stage bevel gear shaft 26, the second-stage bevel gear shaft 26 rotates accordingly, thereby driving the grinding wheel installed at the end of the second-stage bevel gear shaft 26 to rotate.

[0035] This internally mounted grinding wheel motor achieves side-mounted grinding wheel by setting up a transmission box 4 with a primary bevel gear shaft 19 and a secondary bevel gear shaft 26, thus enabling grinding operations on workpieces on the side of the grinding head motor.

[0036] like Figure 3 and 4 As shown, a pair of cylindrical quick-connect protrusions 30 are fixedly connected to the end face of the side cover 21 opposite to the outer casing 5. A quick-connect slot 31 is formed on the end face of the quick-connect protrusion 30 opposite to the side cover 21, and the quick-connect slot 31 has a circular cross-section. Four quick-connect holes 32 are equidistantly formed on the outer circumference of the outer wall of the quick-connect protrusion 30. All four quick-connect holes 32 communicate with the quick-connect slot 31, and the quick-connect holes 32 are circular holes.

[0037] like Figure 3 and 4 As shown, a bearing cover 33 is provided on the side of the side cover 21 away from the outer housing 5. The bearing cover 33 is used to press and fix the outer bearing 28 in the inner groove 23. The bearing cover 33 is "T" shaped, and a cover through hole 34 is provided in the middle of the bearing cover 33 for the secondary bevel gear shaft 26 to pass through.

[0038] like Figure 3 and 4 As shown, a pair of quick-connect pins 35 are fixedly connected to the end face of the bearing cap 33 facing the quick-connect protrusion 30, and the quick-connect pins 35 are inserted into the quick-connect slot 31. An inner cylindrical cavity 36 is formed inside the quick-connect pin 35, and the cross-section of the inner cylindrical cavity 36 is circular. A guide hole 37, which is circular, is formed on the end face of the quick-connect pin 35 facing the side cover 21 and communicates with the inner cylindrical cavity 36. Four sliding holes 38, which are circular, are equidistantly formed on the outer circumference of the outer wall of the quick-connect pin 35. All four sliding holes 38 communicate with the inner cylindrical cavity 36 and can be aligned with four quick-connect locking holes 32 respectively. A cylindrical quick-connect sliding buckle 39 is slidably disposed in each sliding hole 38.

[0039] like Figure 3 and 4 As shown, a push-button mechanism is provided in the inner column cavity 36. The push-button mechanism is used to control the quick-connect sliding buckle 39 to reciprocate along the sliding buckle hole 38. The push-button mechanism includes a push-button crossbar 40, a hinge platform 41, and a push-button rod 42.

[0040] like Figure 3 and 4As shown, the push-buckling crossbar 40 is cylindrical, and is movably arranged at the center of the inner column cavity 36. The end of the push-buckling crossbar 40 extends out of the inner column cavity 36 through the guide opening 37, and the push-buckling crossbar 40 is in sliding fit with the guide opening 37.

[0041] As shown in Figure 3 and 4 In this embodiment, the number of the hinged platforms 41 is four, and the four hinged platforms 41 are arranged equidistantly on the outer side wall of the push-buckling crossbar 40. The four hinged platforms 41 correspond to the four quick-connection sliding buckles 39 respectively.

[0042] As shown in Figure 3 and 4 The push-buckling rod 42 is arranged between the hinged platform 41 and the quick-connection sliding buckle 39. One end of the push-buckling rod 42 is hinged to the quick-connection sliding buckle 39, and the other end is hinged to the hinged platform 41. In the initial state, the hinging point of the push-buckling rod 42 and the quick-connection sliding buckle 39 is located on the side of the hinging point of the push-buckling rod 42 and the hinged platform 41 away from the guide opening 37.

[0043] As shown in Figure 3 and 4 The guide plate 43 is fixedly connected to the push-buckling crossbar 40 and is in sliding fit with the inner column cavity 36. The end face of the guide plate 43 away from the guide opening 37 is arranged between the groove wall of the inner column cavity 36 away from the guide opening 37 and the push-buckling crossbar 40. When the guide plate 43 moves away from the guide opening 37, the return spring 44 will be compressed. When the guide plate 43 is released from the restriction, the guide plate 43 will move towards the guide opening 37 under the restoring action of the return spring 44.

[0044] As shown in Figure 3 and 4 The outer side wall of the quick-connection insertion column 35 is provided with the quick-connection locking hole 45 which is in communication with the inner column cavity 36. The quick-connection locking hole 45 is located on the side of the quick-connection clamping hole 32 away from the guide opening 37, and the quick-connection locking hole 45 is a circular hole.

[0045] As shown in ​ and 4 The outer side wall of the guide plate 43 is provided with the sliding buckle groove 46 which is circular in cross section and can be aligned with the quick-connection locking hole 45. The sliding buckle groove 46 is slidably provided with the quick-connection locking buckle 47 which is bullet-shaped. The quick-connection locking buckle 47 and the bottom wall of the sliding buckle groove 46 are provided with the push-buckling spring 48 which is glued to one end of the quick-connection locking buckle 47 and the other end of the bottom wall of the sliding buckle groove 46. The push-buckling spring 48 is used to push the quick-connection locking buckle 47 into the quick-connection locking hole 45, so as to limit the movement of the push-buckling crossbar 40.

[0046] The detailed installation process of the bearing gland 33 in the embodiment is as follows: a worker aligns the quick-connection inserting column 35 of the bearing gland 33 with the quick-connection inserting slot 31 of the quick-connection convex column 30, then inserts the quick-connection inserting column 35 into the quick-connection inserting slot 31 until the push-drawing cross rod 40 abuts against the bottom wall of the quick-connection inserting slot 31, then the push-drawing cross rod 40 and the guide plate 43 move away from the guide opening 37, since the hinged point of the push-drawing rod 42 and the quick-connection sliding buckle 39 is located on the side of the hinged point of the push-drawing rod 42 and the hinged table 41 away from the guide opening 37, the push-drawing rod 42 pushes the quick-connection sliding buckle 39 to slide out of the sliding buckle hole 38 and insert into the quick-connection clamping hole 32, at the same time, the sliding buckle slot 46 is aligned with the quick-connection locking hole 45, the push-drawing spring 48 pushes the quick-connection locking buckle 47 to insert into the quick-connection locking hole 45, at this time, the push-drawing cross rod 40 is limited to move, then the bearing gland 33 can stably keep the state of pressing the side outer bearing 28.

[0047] The quick-connection inner-buckling connection mode between the bearing gland 33 and the side cover 21 of the inner-buckling type grinding head motor is beneficial to improving the dismounting speed of the bearing gland 33 and improving the installation efficiency of the bearing gland 33.

[0048] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, which should be covered in the claim scope of the utility model.

Claims

1. An internally clamped grinding head motor, characterized in that: The device includes a motor body (1) with a spline output shaft (2) and a mounting panel (3) and a transmission box (4). The transmission box (4) includes an outer box (5) with an inner box (6). A top hole (7) communicating with the inner box (6) is provided on the top surface of the outer box (5). A top cover (10) is provided on the top surface of the outer box (5) to close the top hole (7) and to connect the top to the mounting panel (3). A connecting hole (13) is provided on the end face of the top cover (10) facing the inner box (6). A first-stage bevel gear shaft (19) is rotatably disposed in the inner box (6), extending into the connecting hole (13) and coaxially connected with the spline output shaft (2). A side hole (9) communicating with the inner box (6) is provided on the side wall of the outer box (5). A second-stage bevel gear shaft (26) meshing with the first-stage bevel gear shaft (19) is rotatably disposed in the side hole (9).

2. The internally clamped grinding head motor according to claim 1, characterized in that: A top insert ring (11) is provided on the end face of the top cover (10) facing the outer box (5), and the top insert ring (11) is inserted into the top hole (7).

3. The internally fastened grinding head motor according to claim 1, characterized in that: The top cover (10) has a top groove (12) coaxial with the connecting hole (13) on the end face facing the inner chamber (6), and a top bearing (14) fitted on the first-stage bevel gear shaft (19) is embedded in the top groove (12).

4. The internally fastened grinding head motor according to claim 1, characterized in that: The outer casing (5) has a bottom hole (8) that communicates with the inner chamber (6) on its outer side wall. The outer casing (5) has a bottom cover (15) that closes the bottom hole (8). The bottom cover (15) has a bottom groove (17) on its end face facing the inner chamber (6). The bottom groove (17) has a bottom bearing (18) that is fitted onto the first-stage bevel gear shaft (19).

5. The internally fastened grinding head motor according to claim 4, characterized in that: A bottom insert ring (16) is provided on the end face of the bottom cover (15) facing the outer box (5), and the bottom insert ring (16) is inserted into the bottom hole (8).

6. The internally fastened grinding head motor according to claim 1, characterized in that: The outer casing (5) is provided with a side cover (21) that closes the side hole (9). On the end face of the side cover (21) facing the inner chamber (6), in the direction away from the inner chamber (6), there are a side inner groove (23), a connecting hole (13), and a side outer groove (25) for the secondary bevel gear shaft (26) to pass through. The side inner groove (23) is fitted with a side inner bearing (27) that is mounted on the secondary bevel gear shaft (26), and the side outer groove (25) is fitted with a side outer bearing (28) that is mounted on the secondary bevel gear shaft (26).

7. The internally clamped grinding head motor according to claim 6, characterized in that: A quick-connect protrusion (30) is provided on the end face of the side cover (21) away from the outer housing (5). A quick-connect slot (31) is provided on the end face of the quick-connect protrusion (30) away from the side cover (21). A quick-connect locking hole (32) is provided on the outer wall of the quick-connect protrusion (30). A bearing cover (33) is provided on the side of the side cover (21) away from the outer housing (5) to press and fix the outer bearing (28) in the inner groove (23). A cover through-hole is provided in the middle of the bearing cover (33) for the secondary bevel gear shaft (26) to pass through. The bearing cap (33) has a quick-connect pin (35) on its end face facing the quick-connect protrusion (30) for insertion into the quick-connect slot (31). The quick-connect pin (35) has an inner cylindrical cavity (36). The quick-connect pin (35) has a sliding buckle hole (38) on its outer side wall. Each sliding buckle hole (38) has a quick-connect sliding buckle (39) slidably disposed therein. The inner cylindrical cavity (36) is provided with a push-button mechanism for controlling the quick-connect sliding buckle (39) to reciprocate along the sliding buckle hole (38).

8. The internally fastened grinding head motor according to claim 7, characterized in that: The quick-connect pin (35) has a guide opening (37) on its end face facing the side cover (21) that communicates with the inner column cavity (36). The push-button mechanism includes a push-button crossbar (40) movably disposed at the center of the inner column cavity (36) and passing through the guide opening (37), a plurality of hinge platforms (41) disposed on the outer side wall of the push-button crossbar (40), and a push-button rod (42). One end of the push-button rod (42) is hinged to the quick-connect slide (39), and the other end is hinged to the hinge platform (41). The hinge point of the push-button rod (42) and the quick-connect slide (39) is located on the side away from the guide opening (37) of the hinge point of the push-button rod (42) and the hinge platform (41).

9. The internally fastened grinding head motor according to claim 8, characterized in that: The outer wall of the push-button crossbar (40) is provided with a guide plate (43) that slides with the inner column cavity (36). The outer wall of the quick-connect plug (35) is provided with a quick-connect locking hole (45) that communicates with the inner column cavity (36). The quick-connect locking hole (45) is located on the side of the quick-connect card hole (32) away from the guide opening (37). The outer wall of the guide plate (43) is provided with a sliding buckle groove (46). A quick-connect locking buckle (47) is slidably provided in the sliding buckle groove (46). A push-button spring (48) is provided in the sliding buckle groove (46). One end of the push-button spring (48) is connected to the quick-connect locking buckle (47), and the other end is connected to the bottom wall of the sliding buckle groove (46).

10. The internally fastened grinding head motor according to claim 9, characterized in that: A return spring (44) partially sleeved on the push-button crossbar (40) is provided between the end face of the guide plate (43) away from the guide opening (37) and the groove wall of the inner column cavity (36) away from the guide opening (37).

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