CN218051344U

CN218051344U - Elevator main shaft drilling limiting device

Info

Publication number: CN218051344U
Application number: CN202221669808.5U
Authority: CN
Inventors: 黄文生; 盘鑫; 彭中山; 黄杰林
Original assignee: Zhongshan Jonjee Precision Machinery Co ltd
Current assignee: Zhongshan Jonjee Precision Machinery Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-12-16
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses an elevator main shaft drilling stop device, include: the stand is provided with a rotating component which can rotate around the axis of the stand; the rotary table is arranged on the rotating assembly; the turntable is provided with a positioning groove and a fastening device for limiting the elevator main shaft; the rotating assembly rotates to drive the turntable to rotate so as to drive the elevator main shaft to change direction; the positioning mechanism is arranged on the base and can be partially inserted into the turntable to position the rotating end point of the turntable; the positioning cap is arranged at the end part of the elevator main shaft and can be partially embedded into the positioning groove so as to position the elevator main shaft; the positioning cap is provided with a drill bushing for guiding the drill bit. According to the utility model discloses an elevator main shaft stop device that drills can convenient and fast fix a position elevator main shaft, and is provided with the carousel and commutates elevator main shaft, can utilize a drilling equipment to drill to elevator main shaft's both ends, has promoted machining efficiency effectively.

Description

Elevator main shaft drilling limiting device

Technical Field

The utility model relates to an elevator main shaft processing equipment field especially relates to an elevator main shaft drilling stop device.

Background

An elevator refers to a permanent transportation apparatus serving a number of specific floors in a building, the cars of which travel in at least two rigid orbits perpendicular to the horizontal plane or inclined at an angle of less than 15 ° to the vertical, and with the progress of urbanization, the development of real estate and commercial real estate, high-rise buildings are increasing and the demand for elevators is increasing. The elevator main shaft is an important part in the elevator, two ends of the elevator main shaft need to be drilled, and the problems of complex positioning and low processing efficiency still exist in the process of drilling the end part of the elevator main shaft at present.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an elevator main shaft stop device that drills can convenient and fast fix a position elevator main shaft, and is provided with the carousel and commutates elevator main shaft, can utilize a drilling equipment to drill to elevator main shaft's both ends, has promoted machining efficiency effectively.

According to the utility model discloses elevator main shaft drilling stop device, include: the stand is provided with a rotating component which can rotate around the axis of the stand; a turntable mounted to the rotating assembly; the turntable is provided with a positioning groove and a fastening device for limiting the elevator main shaft; the rotating assembly can drive the turntable to rotate by rotating so as to drive the elevator main shaft to change direction; the positioning mechanism is arranged on the base and can be partially inserted into the turntable so as to position the rotating end point of the turntable; the positioning cap is arranged at the end part of the elevator main shaft and can be partially embedded into the positioning groove so as to position the elevator main shaft; the positioning cap is provided with a drill bushing for guiding the drill bit.

According to the utility model discloses elevator main shaft drilling stop device has following technological effect at least: the reversing mechanism has the advantages that the reversing mechanism is ingenious in structure, the rotary table is driven to rotate by rotating the rotary assembly, the reversing of the elevator main shaft is further realized, the operation is simple, the practicability is high, the workload is reduced, and the drilling efficiency of two ends of the elevator main shaft can be effectively improved; be provided with positioning mechanism and fix a position the carousel, fix a position elevator main shaft with the position cap, guaranteed effectively that the position of drilling is accurate, promoted the stability of drilling quality.

According to some embodiments of the invention, the rotating assembly comprises a main shaft, one end of the main shaft is provided with a connecting disc; the base is provided with a through hole, the main shaft penetrates through the through hole in a rotating mode around the axis of the main shaft, and the rotary disc is connected with the connecting disc.

According to the utility model discloses a some embodiments, fastener includes the piece of supporting that sets up of interval about with locate two support retaining member between the piece, the retaining member be used for with elevator main shaft lock in support on the piece.

According to some embodiments of the utility model, positioning mechanism includes that mount pad and slip wear to locate the locating lever of mount pad, the carousel is equipped with the confession the locating hole that the locating lever passed, locating lever one end can insert in the locating hole with right the carousel rotates the terminal point spacing.

According to the utility model discloses a some embodiments, the locating hole is equipped with two and upper and lower interval setting, two the axis of locating hole is located the coplanar.

According to some embodiments of the present invention, the mounting base is provided with a stepped hole, and the positioning rod is slidably inserted into the stepped hole; the outer peripheral wall of the positioning rod is provided with a shaft shoulder, an elastic piece for driving the positioning rod to slide towards the direction of the rotary table is sleeved on the positioning rod, and two ends of the elastic piece are respectively abutted against the step surface of the step hole and the shaft shoulder; and one end of the positioning rod, which is far away from the turntable, is provided with a limiting structure which can abut against the mounting seat so as to limit the sliding end point of the positioning rod.

According to the utility model discloses a some embodiments, the locating lever is kept away from the one end of carousel is equipped with radial sunken slot, limit structure is the locating pin, the locating pin can insert in the slot, with the locating lever court when the carousel direction slides with the mount pad is kept away from the one end of carousel offsets, and the realization is right the slip terminal point of locating lever is spacing.

According to the utility model discloses a some embodiments, the locating cap includes the roof and encloses to be located the arc limit at roof border, arc limit threaded connection has locking bolt and guide bar, locking bolt be used for with the locating cap lock in elevator main shaft, the guide bar tip stretches into in the constant head tank and can follow the constant head tank slides, it is right elevator main shaft advances line location.

According to some embodiments of the present invention, the apparatus further comprises a support mechanism, the support mechanism is mounted to the base and disposed below the turntable; the support mechanism comprises a lifting stud capable of movably rising below the elevator main shaft to support the elevator main shaft.

According to some embodiments of the present invention, the supporting mechanism further comprises a supporting seat and an adjusting nut, wherein the supporting seat is provided with a placing groove for placing the adjusting nut, a mounting hole penetrating through the upper and lower side walls of the placing groove, and a limiting hole communicated with the mounting hole; the lifting stud part penetrates through the mounting hole, and the adjusting nut is sleeved on the lifting stud and is in threaded connection with the lifting stud; a limiting pin penetrates through the limiting hole, a guide groove extending along the axial direction of the lifting stud is formed in the outer peripheral wall of the lifting stud, and the limiting pin can be partially inserted into the guide groove to limit the lifting stud in the circumferential direction; the lifting stud can be driven to lift by rotating the adjusting nut.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a schematic view of an installation structure of an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of the present invention;

fig. 3 is a schematic structural diagram of the back of the turntable according to the embodiment of the present invention;

FIG. 4 is an exploded view of a rotating assembly according to an embodiment of the present invention;

FIG. 5 is an exploded view of the positioning mechanism of the embodiment of the present invention;

FIG. 6 is an exploded view of the support mechanism of the embodiment of the present invention;

FIG. 7 is a schematic structural view of a positioning cap according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of an embodiment of the invention.

Reference numerals:

the elevator comprises a machine base 100, a rotating assembly 110, a main shaft 111, a connecting disc 112, a steering wheel 113, a through hole 120 and an elevator main shaft 130;

the rotary table comprises a rotary table 200, a positioning block 210, a positioning groove 211, a butting block 220, a locking piece 230, a fixing rod 231, a locking plate 232, a fixing seat 233, a locking screw 234, a positioning hole 240 and a cylindrical hole 250;

the positioning mechanism 300, the mounting seat 310, the stepped hole 311, the embedded groove 312, the positioning rod 320, the slot 321, the elastic piece 330 and the positioning pin 340;

the positioning cap 400, the top plate 410, the drill bushing 411, the auxiliary hole 412, the arc edge 420, the locking bolt 430 and the guide rod 440;

the support mechanism 500, a support seat 510, a placing groove 511, a mounting hole 512, a limiting hole 513, a lifting stud 520, a support platform 521, a guide groove 522, an adjusting nut 530, a rotating groove 531, a rotating rod 532 and a limiting pin 540.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1 to 8, the utility model discloses an elevator main shaft drilling stop device of embodiment, including frame 100, wear to be equipped with on the frame 100 and to wind the rotatory rotating assembly 110 of its self axis, rotating assembly 110 one end is connected with carousel 200, and elevator main shaft 130 installs on carousel 200, and rotating assembly 110 is rotatory can drive carousel 200 synchronous revolution, and then drives elevator main shaft 130 rotatoryly. The utility model discloses stop device uses for cooperating the rocker arm rig, and the rig sets up in the periphery of carousel 200, can be to installing 130 tip drilling of elevator main shaft on carousel 200. After the drilling machine completes drilling on one point of the elevator main shaft 130, the rotating assembly 110 rotates 180 degrees to drive the elevator main shaft 130 to change the direction, and then the drilling machine drills the other end of the elevator main shaft 130. The reversing mode is simple, the structure is ingenious, the rotary table 200 is driven to rotate through the rotating component 110, reversing of the elevator main shaft 130 is achieved, operation is simple, practicability is high, workload is reduced, and drilling efficiency of two ends of the elevator main shaft 130 can be effectively improved.

In some embodiments of the present invention, as shown in fig. 1 and fig. 2, the base 100 is provided with a through hole 120 penetrating through the base 100 in a horizontal direction, the rotating assembly 110 includes a main shaft 111, and the main shaft 111 is inserted into the through hole 120 and can rotate around its axis. The one end of main shaft 111 sets firmly connection pad 112, connection pad 112 includes little diameter section and big diameter section, carousel 200 is equipped with the cylinder hole 250 that supplies little diameter section embedding, the periphery interval of cylinder hole 250 is provided with a plurality of screws, the big diameter section of connection pad 112 is equipped with the through-hole that corresponds with a plurality of screws, the little diameter section of connection pad 112 inserts in the cylinder hole 250, big cylinder section passes through nut locking with carousel 200's screw rod in order to be connected both.

Further, as shown in fig. 4, a steering wheel 113 is mounted at an end of the main shaft 111 away from the connecting plate 112, and the steering wheel 113 is detachably connected, for example, keyed, to the main shaft 111. The steering wheel 113 is sleeved on the main shaft 111, so that the main shaft 111 can be rotated manually. It should be noted that the installation may be performed by first connecting the turntable 200 with the connecting disc 112, then inserting the main shaft 111 into the through hole 120, and then installing the steering wheel 113; or the main shaft 111 is firstly installed on the through hole 120, and the turntable 200 is installed after the steering wheel 113 is installed.

In some embodiments of the present invention, one side of the turntable 200 facing away from the main shaft 111 is provided with a positioning groove 211 and a fastening device for limiting the elevator main shaft 130. As shown in fig. 1 and 2, the upper and lower ends of the rotary disc 200 are connected to "convex" positioning blocks 210, and the positioning grooves 211 are disposed on the positioning blocks 210. The positioning block 210 is detachably connected with the turntable 200, so that the positioning block 210 can be replaced independently, and the positioning block 210 can be taken down during transportation, so that the positioning block 210 can be protected.

In a further embodiment of the present invention, the fastening device comprises two supporting blocks 220 and a locking member 230 disposed between the two supporting blocks 220, the locking member 230 is used for locking the elevator main shaft 130 on the supporting blocks 220. The two abutting blocks 220 are respectively abutted against the two positioning blocks 210, the two abutting blocks 220 are symmetrically arranged about a horizontal plane passing through the center of the turntable 200, a groove for the elevator main shaft 130 to be embedded is formed in the middle of the abutting block 220, and the locking member 230 is used for pressing the middle of the elevator main shaft 130 towards the direction of the turntable 200, so that two ends of the elevator main shaft 130 are respectively abutted against the grooves of the two abutting blocks 220.

It will be appreciated that damage to the outer surface of the elevator shaft 130 caused by direct contact of the locking member 230 with the outer surface of the elevator shaft 130 can be avoided by providing a flexible spacer at the point where the elevator shaft 130 contacts the locking member 230.

Further, retaining member 230 includes a fixed rod 231 and a fixed seat 233 respectively disposed on both sides of elevator main shaft 130, the end of fixed rod 231 is hinged with a locking plate 232, the end of fixed seat 233 is hinged with a locking screw 234, and a nut is screwed on locking screw 234. One end of the locking plate 232 is hinged to the fixing rod 231, the other end of the locking plate is provided with a strip-shaped groove for embedding the locking screw 234, and the middle of the locking plate is provided with an arc-shaped groove for embedding the elevator main shaft 130. When the elevator main shaft 130 is locked, the nut on the locking screw 234 is loosened, then the elevator main shaft 130 is loaded into the arc-shaped groove, then the locking nut is clamped into the strip-shaped groove, and finally the nut is locked, so that the locking of the elevator main shaft 130 is completed.

In some embodiments of the present invention, a positioning mechanism 300 is further installed on the top of the base 100, and the positioning mechanism 300 can be partially inserted into the turntable 200 to position the rotation end point of the turntable 200. As shown in fig. 2 and 5, two positioning holes 240 are formed in the turntable 200 at an upper-lower interval, central axes of the two positioning holes 240 are located on the same plane, the positioning mechanism 300 includes a mounting seat 310 and a positioning rod 320 slidably inserted through the mounting seat 310, and one end of the positioning rod 320 can be inserted into the positioning hole 240 to limit a rotation end point of the turntable 200. After the positioning rod 320 is inserted into one of the positioning holes 240, the drilling machine drills a hole in one end of the elevator main shaft 130, after the drilling is completed, the positioning rod 320 is pulled out, the rotating assembly 110180 degrees is rotated, then the positioning rod 320 is aligned with the other positioning hole 240, and the positioning rod 320 is inserted, so that the elevator main shaft 130 is reversed, and the drilling machine can conveniently drill the hole in the other end of the elevator main shaft 130.

In some embodiments of the present invention, the mounting base 310 has a stepped hole 311, and the positioning rod 320 is slidably inserted into the stepped hole 311; the outer peripheral wall of the positioning rod 320 is provided with a shaft shoulder, and is sleeved with an elastic member 330 for driving the positioning rod to slide towards the direction of the turntable 200, and two ends of the elastic member 330 respectively abut against the step surface and the shaft shoulder of the step hole 311. As shown in fig. 5 and 8, the elastic member 330 is a spring. The stepped hole 311 comprises a wide-diameter section and a narrow-diameter section, wherein a stepped surface protruding towards the center is formed at the diameter change part of the wide-diameter section and the narrow-diameter section; locating lever 320 is including big diameter section and minor diameter section equally, and the diameter change department of big diameter section and minor diameter section forms the shaft shoulder. The one end that is close to carousel 200 is located to the wide footpath section, and the other end is located to the narrow footpath section, and the locating lever 320 only minor diameter section can pass the narrow footpath section, and the spring housing is located on the minor diameter section of locating lever 320, and both ends offset with shaft shoulder and step surface respectively. The diameter of the locating hole 240 should be no less than the diameter of the large diameter section of the locating rod 320.

It can be understood that, due to the effect of the elastic member 330, the elastic member 330 will push the positioning rod 320 to move towards the turntable 200, and if the elastic member 330 is compressed, the elastic member 330 will return to the original position, and even the positioning rod 320 can be ejected out of the stepped hole 311, so that a limiting structure which can abut against the mounting seat 310 to limit the sliding end point of the positioning rod 320 needs to be installed at the end of the positioning rod 320 far away from the turntable 200.

In some embodiments of the utility model, the one end that the carousel 200 was kept away from to the locating lever 320 is equipped with radial sunken slot 321, and limit structure is locating pin 340, and locating pin 340 can insert in the slot 321 to the one end that keeps away from carousel 200 with mount pad 310 when the locating lever 320 towards carousel 200 direction slip offsets, realizes spacing to the slip terminal point of locating lever 320. Specifically, as shown in fig. 5 and 8, an insertion groove 312 is formed in one end of the mounting seat 310, which is far away from the turntable 200, the width of the insertion groove 312 should enable the positioning pin 340 to be inserted, the positioning pin 340 abuts against an end wall of the insertion groove 312, the sliding end point of the positioning rod 320 can be limited, and meanwhile, due to blocking of two side walls of the insertion groove 312, circumferential rotation of the positioning rod 320 can also be limited.

In some embodiments of the present invention, the base 100 is further installed with a supporting mechanism 500, and the supporting mechanism 500 is installed on the base 100 and is disposed below the turntable 200; the support mechanism 500 includes a lift stud 520 that is movable up and down below the elevator shaft 130 to support the elevator shaft 130. As shown in fig. 1, 2, and 8, the support mechanism 500 is provided to support the elevator main shaft 130 so that the drilling machine pushes the elevator main shaft 130 to slide when the drilling machine drills the elevator main shaft 130. The lifting stud 520 is provided to support the elevator shaft 130 without blocking the rotation of the elevator shaft 130.

In some embodiments of the present invention, the supporting mechanism 500 further includes a supporting base 510 and an adjusting nut 530, the supporting base 510 is provided with a placing groove 511 for placing the adjusting nut 530, a mounting hole 512 penetrating through the upper and lower sidewalls of the placing groove 511, and a limiting hole 513 communicating with the mounting hole 512; as shown in fig. 6, the placing slot 511 is horizontally disposed, and is opened to one side, and the height in the up-down direction thereof is slightly larger than the thickness of the adjusting nut 530 in the up-down direction thereof; the mounting holes 512 penetrate the supporting base 510 in the vertical direction, and thus penetrate the upper and lower sidewalls of the placing groove 511; the stopper hole 513 is provided below the placement groove 511, is provided along the radial direction of the mounting hole 512, and communicates with the mounting hole 512.

In some embodiments of the present invention, a supporting platform 521 is disposed on the top of the lifting stud 520 for supporting the end surface of the elevator main shaft 130; the rest part of the lifting stud 520 is cylindrical, the outer peripheral wall of the lifting stud 520 is provided with external threads, and the adjusting nut 530 is sleeved on the lifting stud 520 and is in threaded connection with the external threads of the lifting stud 520; the lower part of the lifting stud 520 is arranged in the mounting hole 512 in a penetrating way. A limit pin 540 penetrates through the limit hole 513, a guide groove 522 extending along the axial direction of the outer peripheral wall of the lifting stud 520 is formed in the outer peripheral wall of the lifting stud 520, and the limit pin 540 can be partially inserted into the guide groove 522 to limit the lifting stud 520 in the circumferential direction; turning the adjusting nut 530 can drive the lifting stud 520 to lift. Specifically, the extending direction of the guide slot 522 is the vertical direction, and the insertion of the limit pin 540 into the guide slot 522 is to limit the rotation of the lifting stud 520, so as to ensure that the rotation of the adjusting nut 530 only drives the lifting stud 520 to lift.

Further, a plurality of rotating grooves 531 are formed at intervals on the outer circumferential wall of the adjustment nut 530, and the rotation of the adjustment nut 530 by manually pulling is achieved by inserting a rotating rod 532 into the rotating grooves 531. As shown in fig. 2, after the rotating rod 532 is inserted into one of the rotating grooves 531, the adjusting nut 530 is horizontally rotated by a certain angle; then the rotary groove 531 is drawn in and another rotary groove 531 is inserted into the rotary groove 531 to continue to horizontally rotate the adjusting nut 530, and the cycle is repeated to realize the lifting of the lifting stud 520.

In some embodiments of the present invention, the elevator further comprises a positioning cap 400, the positioning cap 400 is installed at the end of the elevator main shaft 130 and can be partially embedded into the positioning groove 211 to position the elevator main shaft 130; the locking cap 400 is provided with a drill bushing 411 for guiding the drill bit. Specifically, as shown in fig. 1 and 7, the positioning cap 400 includes a top plate 410 and an arc edge 420 surrounding the edge of the top plate 410, the arc edge 420 is in threaded connection with a locking bolt 430 and a guide rod 440, the locking bolt 430 is used for locking the positioning cap 400 to the elevator main shaft 130, and the end of the guide rod 440 extends into the positioning groove 211 and can slide along the positioning groove 211 to position the elevator main shaft 130. The locking bolt 430 is tightened to abut against the outer side surface of the elevator shaft 130, thereby securing the stable connection of the locking cap 400 to the elevator shaft 130.

It should be noted that the central axis of the positioning groove 211 is located on the same plane as the central axis of the passing turntable 200, and the guiding rod 440 is partially embedded in the positioning groove 211, so as to ensure that the central axis of the elevator main shaft 130 is also coplanar with the central axis of the passing turntable 200 when the elevator main shaft 130 is drilled. As shown in fig. 1, in order to ensure that the elevator shaft 130 is in a vertical state when being drilled, thereby ensuring that the drilled hole is accurately positioned.

Further, an auxiliary hole 412 is formed in the center of the top plate 410, and a drill penetrates through the auxiliary hole 412 to drill the elevator main shaft 130; the drill bushing 411 is disposed at the outer circumference of the auxiliary hole 412, and is used for pre-positioning the drilling machine so that the drill bit of the drilling machine can be aligned with the auxiliary hole 412. According to the utility model discloses elevator main shaft drilling stop device is provided with positioning mechanism 300 and fixes a position carousel 200, fixes a position elevator main shaft 130 with position cap 400, has guaranteed effectively that the position of drilling is accurate, has promoted the stability of drilling quality.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides an elevator main shaft drilling stop device which characterized in that includes:

the engine base (100) is provided with a rotating component (110) capable of rotating around the axis of the engine base in a penetrating way;

a turntable (200) mounted to the rotating assembly (110); the turntable (200) is provided with a positioning groove (211) and a fastening device for limiting the elevator main shaft (130); the rotating component (110) can drive the turntable (200) to rotate by rotating, and further drive the elevator main shaft (130) to change direction;

the positioning mechanism (300) is arranged on the base (100) and can be partially inserted into the turntable (200) to position the rotating end point of the turntable (200);

the positioning cap (400) is arranged at the end part of the elevator main shaft (130) and can be partially embedded into the positioning groove (211) to position the elevator main shaft (130); the positioning cap (400) is provided with a drill bushing (411) for guiding a drill bit.

2. The elevator main shaft drilling limiting device of claim 1, which is characterized in that: the rotating assembly (110) comprises a main shaft (111), and one end of the main shaft (111) is provided with a connecting disc (112); the base (100) is provided with a through hole (120), the main shaft (111) penetrates through the through hole (120) around the axis of the main shaft in a rotating mode, and the rotary disc (200) is connected with the connecting disc (112).

3. The elevator main shaft drilling limiting device of claim 1, wherein: the fastening device comprises supporting blocks (220) arranged at intervals up and down and a locking member (230) arranged between the two supporting blocks (220), and the locking member (230) is used for locking the elevator main shaft (130) on the supporting blocks (220).

4. The elevator main shaft drilling limiting device of claim 1, which is characterized in that: the positioning mechanism (300) comprises an installation seat (310) and a positioning rod (320) which is slidably arranged in the installation seat (310) in a penetrating mode, the turntable (200) is provided with a positioning hole (240) for the positioning rod (320) to penetrate through, and one end of the positioning rod (320) can be inserted into the positioning hole (240) to limit the rotation end point of the turntable (200).

5. The elevator main shaft drilling limiting device of claim 4, wherein: the positioning holes (240) are arranged in two and are arranged at intervals up and down, and the central axes of the two positioning holes (240) are located on the same plane.

6. The elevator main shaft drilling limiting device of claim 5, wherein: the mounting seat (310) is provided with a stepped hole (311), and the positioning rod (320) penetrates through the stepped hole (311) in a sliding manner; the outer peripheral wall of the positioning rod (320) is provided with a shaft shoulder, an elastic piece (330) for driving the positioning rod to slide towards the direction of the turntable (200) is sleeved on the positioning rod, and two ends of the elastic piece (330) are respectively abutted against the step surface of the step hole (311) and the shaft shoulder; one end, far away from the turntable (200), of the positioning rod (320) is provided with a limiting structure which can abut against the mounting seat (310) so as to limit the sliding end point of the positioning rod (320).

7. The elevator main shaft drilling limiting device of claim 6, which is characterized in that: one end, far away from the turntable (200), of the positioning rod (320) is provided with a radially recessed slot (321), the limiting structure is a positioning pin (340), the positioning pin (340) can be inserted into the slot (321) so as to abut against one end, far away from the turntable (200), of the mounting seat (310) when the positioning rod (320) slides towards the turntable (200), and therefore the sliding end point of the positioning rod (320) is limited.

8. The elevator main shaft drilling limiting device of claim 1, which is characterized in that: the positioning cap (400) comprises a top plate (410) and an arc edge (420) arranged around the edge of the top plate (410), the arc edge (420) is in threaded connection with a locking bolt (430) and a guide rod (440), the locking bolt (430) is used for locking the positioning cap (400) on the elevator main shaft (130), and the end part of the guide rod (440) extends into the positioning groove (211) and can slide along the positioning groove (211) to position the elevator main shaft (130).

9. The elevator main shaft drilling limiting device of claim 1, wherein: the support mechanism (500) is arranged on the base (100) and is arranged below the turntable (200); the support mechanism (500) includes a lifting stud (520) that is movable up to below the elevator shaft (130) to support the elevator shaft (130).

10. The elevator main shaft drilling limiting device of claim 9, wherein: the supporting mechanism (500) further comprises a supporting seat (510) and an adjusting nut (530), wherein the supporting seat (510) is provided with a placing groove (511) for placing the adjusting nut (530), a mounting hole (512) penetrating through the upper side wall and the lower side wall of the placing groove (511) and a limiting hole (513) communicated with the mounting hole (512); the lifting stud (520) is partially arranged in the mounting hole (512) in a penetrating mode, and the adjusting nut (530) is sleeved on the lifting stud (520) and is in threaded connection with the lifting stud (520); a limiting pin (540) penetrates through the limiting hole (513), a guide groove (522) extending along the axial direction of the lifting stud (520) is formed in the outer peripheral wall of the lifting stud (520), and the limiting pin (540) can be partially inserted into the guide groove (522) to limit the lifting stud (520) in the circumferential direction; the lifting stud (520) can be driven to lift by rotating the adjusting nut (530).