CN210817538U

CN210817538U - Butterfly valve drilling auxiliary device

Info

Publication number: CN210817538U
Application number: CN201920804096.5U
Authority: CN
Inventors: 卢松
Original assignee: Hebei Baichuantong Valve Co ltd
Current assignee: Hebei Baichuantong Valve Co ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-06-23
Anticipated expiration: 2029-05-31

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a butterfly valve drilling auxiliary device, which enables the bottom end of a drill bit to drill in the circumferential direction of the top end of a butterfly valve by making the drill bit rotate circularly, improves the accuracy of the hole site in the circumferential direction of the top end of the butterfly valve, facilitates the connection work of the butterfly valve and an external pipe fitting, and improves the practicability and reliability; the drilling machine comprises a workbench, a left vertical rod, an upper beam, a hydraulic device, a connecting plate, a hydraulic rod, a hydraulic pipe, a power device and a drill bit, wherein the left side of the top end of the workbench is connected with the bottom end of the left vertical rod, and the upper side of the right end of the left vertical rod is connected with the left end of the upper beam; the device comprises a mounting block, a middle fixing block, two groups of first connecting rods, an annular track, a gear, a rotating shaft, a first fixing plate, a second fixing plate, a third fixing plate, a speed reducer and a motor.

Description

Butterfly valve drilling auxiliary device

Technical Field

The utility model relates to a mechanical equipment's technical field especially relates to a butterfly valve drilling auxiliary device.

Background

As is well known, a butterfly valve drilling auxiliary device is an auxiliary device for drilling a butterfly valve, and is widely used in the field of mechanical equipment; the existing butterfly valve drilling auxiliary device comprises a workbench, a left vertical rod, an upper beam, a hydraulic device, a connecting plate, a hydraulic rod, a hydraulic pipe, a power device and a drill bit, wherein the left side of the top end of the workbench is connected with the bottom end of the left vertical rod, the upper side of the right end of the left vertical rod is connected with the left end of the upper beam, the right side of the top end of the upper beam is connected with the bottom end of the hydraulic device, the right side of the bottom end of the upper beam is connected with the top end of the connecting plate, the bottom end of the connecting plate is connected with the top end of the hydraulic rod, the upper side of the right end of the hydraulic rod is communicated with the lower side of the left end of the hydraulic pipe, the upper side of the left end of the hydraulic pipe is communicated with; when the existing butterfly valve drilling auxiliary device is used, a butterfly valve is placed at the top end of a workbench, a position to be drilled at the top end of the butterfly valve is positioned below a drill bit, a power device is turned on and drives the drill bit to rotate, the hydraulic device controls the bottom end of a hydraulic rod to move downwards through a hydraulic pipe, the bottom end of the drill bit is contacted with the top end of the butterfly valve and performs drilling work on the butterfly valve, after drilling is completed, the hydraulic device controls the bottom end of the hydraulic rod to move upwards through the hydraulic pipe, the bottom end of the drill bit is separated from the top end of the butterfly valve and returns to the initial position, the butterfly valve is manually rotated, other positions to be drilled on the butterfly valve are placed at the position of the drill bit, the hydraulic device controls the bottom end of the hydraulic rod to move downwards through the hydraulic pipe, the bottom end of the drill bit is contacted with the top end of the butterfly valve and performs drilling work on the butterfly valve, the drilling operation is repeated on the butterfly valve, after the hole is drilled on the circumferential hole position at the top end of the butterfly valve, the power device is closed, the drill bit stops rotating, and the butterfly valve is taken down; present butterfly valve drilling auxiliary device discovers in using, when driling the butterfly valve circumferencial direction hole site, need remove the butterfly valve through the manual work and adjust the butterfly valve position, and the manual work during, the butterfly valve hole site degree of accuracy is lower, and the hole site circularity of butterfly valve circumferencial direction is great, leads to butterfly valve and other pipe connections difficulties easily, and the degree of accuracy of hole site is lower, leads to practicality and reliability lower.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a through making the drill bit do the circumferential direction, make the bottom of drill bit can carry out drilling work to butterfly valve top circumferencial direction, improve the degree of accuracy of butterfly valve top circumferencial direction hole site, make things convenient for the connection work of butterfly valve and external pipe fitting, improve the butterfly valve auxiliary device that drills of practicality and reliability.

The utility model discloses a butterfly valve drilling auxiliary device, comprises a workbench, a left vertical rod, an upper beam, a hydraulic device, a connecting plate, a hydraulic rod, a hydraulic pipe, a power device and a drill bit, the top left side of workstation is connected with the bottom of left vertical rod, the right-hand member upside of left vertical rod is connected with the left end of upper beam, the top right side of upper beam is connected with the bottom of hydraulic device, the bottom right side of upper beam is connected with the top of connecting plate, the bottom of connecting plate is connected with the top of hydraulic rod, the right-hand member upside of hydraulic rod communicates with the left end downside of hydraulic pipe, the left end upside of hydraulic pipe communicates with the right-hand member downside of hydraulic device, the power device is located below the left side of hydraulic rod, the bottom of power device is connected with the top of drill bit; the hydraulic driving device comprises a hydraulic rod, a mounting block, a middle fixing block, two groups of first connecting rods, an annular rail, a gear, a rotating shaft, a first fixing plate, a second fixing plate, a third fixing plate, a speed reducer and a motor, wherein the top end of the mounting block and the middle part of the bottom end of the hydraulic rod are connected, the bottom end of the mounting block is connected with the middle part of the top end of the middle fixing block, the left end and the right end of the middle fixing block are respectively connected with the inner ends of the two groups of first connecting rods, the outer ends of the two groups of first connecting rods are connected with the inner wall of the annular rail, a gear row is arranged in the circumferential direction of the outer wall of the annular rail, the gear is positioned at the left end of the annular rail, the right end of the gear is meshed with the left end of the gear row, the first fixing plate is positioned at the lower left side of the, pivot and gear fixed connection, the second fixed plate is located the left of gear, the bottom of second fixed plate is connected with the top left side of first fixed plate, the top of second fixed plate is connected with the bottom left side of third fixed plate, the top of pivot passes the third fixed plate and stretches out to the top of third fixed plate, pivot upside and third fixed plate rotatable coupling, the bottom of reduction gear is connected with the top left side of third fixed plate, the bottom middle part of reduction gear is connected with the top of pivot, the top of reduction gear is connected with the bottom of motor, the top right side of hydraulic stem and the bottom right side of third fixed plate all are provided with guider, two sets of guider's inner respectively with orbital top and bottom slidable connection.

The utility model discloses a butterfly valve drilling auxiliary device, still include two sets of clamping device, the top right side of workstation is provided with the rig floor, the top left side and the right side of rig floor are connected with two sets of clamping device bottoms respectively, clamping device includes the fourth fixed plate, screw rod and splint, the bottom of fourth fixed plate is connected with the top right side of rig floor, the first screw hole that runs through about the fourth fixed plate middle part is provided with, the right-hand member of screw rod is located the fourth fixed plate, the left of the first screw hole wall of left end screw in of screw rod stretches out to the left of fourth fixed plate, the left end of screw rod and the right-hand member middle part rotatable coupling of splint.

The utility model discloses a butterfly valve drilling auxiliary device, clamping device still include the runner, the right-hand member fixed connection of blocking with the screw rod of runner.

The utility model discloses a butterfly valve drilling auxiliary device, clamping device still include lock nut, and lock nut spiral shell dress cover is established from the right side of screw rod, lock nut's left end and the right-hand member contact of fourth fixed plate.

The utility model discloses a butterfly valve drilling auxiliary device, guider include the deflector, and the inboard circumferencial direction intercommunication in orbital top of annular is provided with the spout, and inside the bottom of deflector was located the left side of spout, the top of deflector stretched out the spout and was connected with the bottom right side of third fixed plate.

The utility model discloses a butterfly valve drilling auxiliary device still includes left extension board, right extension board and gyro wheel, and left extension board is located the left of right extension board, and the top of left extension board and the top of right extension board all are connected with the bottom right side of third fixed plate, the left end of gyro wheel and right-hand member respectively with the right-hand member downside of left extension board and the left end downside rotatable coupling of right extension board, the bottom and the circular orbit's of gyro wheel top left side contact.

The utility model discloses a butterfly valve drilling auxiliary device still includes second connecting rod and guide bar, and the right-hand member of second connecting rod is connected with the left end upside of installation piece, and the left end of second connecting rod is connected with the bottom of guide bar, and the top of guide bar is passed the right side of upper beam and is stretched out to the top of upper beam, but guide bar and upper beam sliding connection.

The utility model discloses a butterfly valve drilling auxiliary device still includes position sleeve and locking bolt, and the middle part that the position sleeve is located the top position sleeve of putting the beams in place is provided with the through-hole that runs through from top to bottom, and the position sleeve passes through the through-hole suit at the guide bar upside, and the left end intercommunication of position sleeve is provided with the second screw hole, the right-hand member and the through-hole intercommunication of second screw hole, and the right-hand member screw in second screw hole inner wall of locking bolt pastes tightly with the outer wall of guide bar.

Compared with the prior art, the beneficial effects of the utility model are that: open the motor, the motor drives the reduction gear and rotates, the reduction gear drives gear revolve through the pivot, gear and circular orbit meshing, the gear prolongs circular orbit circumferencial direction and removes, the gear drives first fixed plate through the pivot, second fixed plate and third fixed plate remove, power device drives the drill bit rotation through the bottom of first fixed plate, do the circumferencial rotation through making the drill bit, make the bottom of drill bit can carry out drilling work to butterfly valve top circumferencial direction, improve the degree of accuracy of butterfly valve top circumferencial direction hole site, make things convenient for the work of being connected of butterfly valve and external pipe fitting, practicality and reliability are improved.

Drawings

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

FIG. 2 is an enlarged view of the gear of FIG. 1;

FIG. 3 is an enlarged schematic view of the clamping device of FIG. 1;

FIG. 4 is an enlarged view of the roller of FIG. 1;

in the drawings, the reference numbers: 1. a work table; 2. a left upright stanchion; 3. an upper beam; 4. a hydraulic device; 5. A connecting plate; 6. a hydraulic lever; 7. a hydraulic tube; 8. a power plant; 9. a drill bit; 10. mounting blocks; 11. a middle fixed block; 12. a first connecting rod; 13. an annular track; 14. a gear; 15. a rotating shaft; 16. a first fixing plate; 17. a second fixing plate; 18. a third fixing plate; 19. A speed reducer; 20. a motor; 21. a fourth fixing plate; 22. a screw; 23. a splint; 24. a rotating wheel; 25. locking the nut; 26. a chute; 27. a guide plate; 28. a left support plate; 29. a right support plate; 30. a roller; 31. a second connecting rod; 32. a guide bar; 33. a positioning sleeve; 34. and locking the bolt.

Detailed Description

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

As shown in fig. 1 to 4, the utility model discloses a butterfly valve drilling auxiliary device, including workstation 1, left pole setting 2, upper beam 3, hydraulic means 4, connecting plate 5, hydraulic stem 6, hydraulic pipe 7, power device 8 and drill bit 9, the top left side of workstation 1 is connected with the bottom of left pole setting 2, the right-hand member upside of left pole setting 2 is connected with the left end of upper beam 3, the top right side of upper beam 3 is connected with the bottom of hydraulic means 4, the bottom right side of upper beam 3 is connected with the top of connecting plate 5, the bottom of connecting plate 5 is connected with the top of hydraulic stem 6, the right-hand member upside of hydraulic stem 6 communicates with the left end downside of hydraulic pipe 7, the left end upside of hydraulic pipe 7 communicates with the right-hand member downside of hydraulic means 4, power device 8 is located hydraulic stem 6 left side below, the bottom of power device 8 is connected with the top of drill bit 9; the hydraulic driving device further comprises an installation block 10, a middle fixing block 11, two groups of first connecting rods 12, an annular rail 13, a gear 14, a rotating shaft 15, a first fixing plate 16, a second fixing plate 17, a third fixing plate 18, a speed reducer 19 and a motor 20, wherein the top end of the installation block 10 is connected with the middle part of the bottom end of the hydraulic rod 6, the bottom end of the installation block 10 is connected with the middle part of the top end of the middle fixing block 11, the left end and the right end of the middle fixing block 11 are respectively connected with the inner ends of the two groups of first connecting rods 12, the outer ends of the two groups of first connecting rods 12 are connected with the inner wall of the annular rail 13, a gear row is arranged in the circumferential direction of the outer wall of the annular rail 13, the gear 14 is located at the left end of the annular rail 13, the right end of the gear 14 is meshed with the left end of the gear row, the first fixing plate 16 is located below the left side, the top end of a rotating shaft 15 penetrates through the gear 14 and extends out of the gear 14, the rotating shaft 15 is fixedly connected with the gear 14, a second fixing plate 17 is located on the left side of the gear 14, the bottom end of the second fixing plate 17 is connected with the left side of the top end of a first fixing plate 16, the top end of the second fixing plate 17 is connected with the left side of the bottom end of a third fixing plate 18, the top end of the rotating shaft 15 penetrates through the third fixing plate 18 and extends out of the top end of the third fixing plate 18, the upper side of the rotating shaft 15 is rotatably connected with the third fixing plate 18, the bottom end of a speed reducer 19 is connected with the left side of the top end of the third fixing plate 18, the middle part of the bottom end of the speed reducer 19 is connected with the top end of the rotating shaft 15, the top end of the speed reducer 19 is connected with the bottom end of a motor 20, guide devices are arranged; open the motor, the motor drives the reduction gear and rotates, the reduction gear drives gear revolve through the pivot, gear and circular orbit meshing, the gear prolongs circular orbit circumferencial direction and removes, the gear drives first fixed plate through the pivot, second fixed plate and third fixed plate remove, power device drives the drill bit rotation through the bottom of first fixed plate, do the circumferencial rotation through making the drill bit, make the bottom of drill bit can carry out drilling work to butterfly valve top circumferencial direction, improve the degree of accuracy of butterfly valve top circumferencial direction hole site, make things convenient for the work of being connected of butterfly valve and external pipe fitting, practicality and reliability are improved.

The utility model discloses a butterfly valve drilling auxiliary device, still include two sets of clamping device, the top right side of workstation 1 is provided with the rig floor, the top left side and the right side of rig floor are connected with two sets of clamping device bottom respectively, clamping device includes fourth fixed plate 21, screw rod 22 and splint 23, the bottom of fourth fixed plate 21 is connected with the top right side of rig floor, fourth fixed plate 21 middle part is provided with the first screw hole that runs through about, the right-hand member of screw rod 22 is located the right-hand member of fourth fixed plate 21, the left end screw in first screw hole wall of screw rod 22 stretches out to the left of fourth fixed plate 21, the left end of screw rod 22 and the right-hand member middle part rotatable coupling of splint 23; place the butterfly valve at rig floor top middle part, rotatory screw rod, the screw rod left end promotes splint and removes left, and the left end and the contact of butterfly valve right-hand member and the extrusion of splint, through setting up two sets of clamping device, the convenience presss from both sides tight fixedly to the butterfly valve, prevents the drilling during operation, and the butterfly valve takes place to remove, can carry out quick location to the butterfly valve through left side clamping device, improves practicality and reliability.

The utility model discloses a butterfly valve drilling auxiliary device, the clamping device also comprises a rotating wheel 24, the blocking of the rotating wheel 24 is fixedly connected with the right end of the screw rod 22; through setting up the runner, can conveniently rotate the screw, improve the usability.

The utility model discloses a butterfly valve drilling auxiliary device, the clamping device also includes lock nut 25, lock nut 25 is threaded on the right side of the screw rod 22, the left end of lock nut 25 contacts with the right end of the fourth fixed plate 21; and the locking nut is screwed, so that the fourth fixing plate and the screw rod are fixedly connected, the position of the clamping plate is conveniently fixed, and the practicability is improved.

The utility model discloses a butterfly valve drilling auxiliary device, guider include deflector 27, the inboard circumferencial direction intercommunication in top of annular track 13 is provided with spout 26, the bottom of deflector 27 is located the left side of spout 26 inside, the top of deflector 27 stretches out spout 26 and is connected with the bottom right side of third fixed plate 18; when the third fixed plate prolongs the circular orbit circumferencial direction and removes, the third fixed plate drives the deflector and removes inside the spout, through setting up two sets of guider, can carry out the work of leading to the moving direction of drill bit, can support first fixed plate and third fixed plate simultaneously, improves practicality and reliability.

The utility model discloses a butterfly valve drilling auxiliary device, still include left extension board 28, right extension board 29 and gyro wheel 30, left extension board 28 is located the left of right extension board 29, the top of left extension board 28 and the top of right extension board 29 all are connected with the bottom right side of third fixed plate 18, the left end and the right-hand member of gyro wheel 30 respectively with the right-hand member downside of left extension board 28 and the left end downside of right extension board 29 rotatable coupling, the bottom of gyro wheel 30 contacts with the top left side of circular track 13; when the third fixed plate moves, the third fixed plate drives the left extension board and the right extension board to move, the left extension board and the right extension board drive the idler wheel to rotate on the top end of the circular track, the third fixed plate can move more smoothly by arranging the left extension board, the right extension board and the idler wheel, the bottom of the third fixed plate is prevented from contacting with the top end of the circular track, the bottom of the guide plate is prevented from contacting with the bottom end of the sliding groove, and the practicability is improved.

The utility model discloses a butterfly valve drilling auxiliary device, still include second connecting rod 31 and guide bar 32, the right-hand member of second connecting rod 31 is connected with the left end upper side of installation piece 10, the left end of second connecting rod 31 is connected with the bottom of guide bar 32, the top of guide bar 32 passes the right side of upper beam 3 and stretches out to the top of upper beam 3, guide bar 32 and upper beam 3 slidable connection; through setting up second connecting rod and guide bar, can lead and support installation piece moving direction, produce when preventing that the installation piece from removing and rock, improve the practicality.

The utility model discloses a butterfly valve drilling auxiliary device, still include position sleeve 33 and locking bolt 34, the position sleeve 33 is located the middle part of the upper positioning sleeve 33 of upper beam 3 and is provided with the through-hole that runs through from top to bottom, position sleeve 33 is on the guide bar 32 upside through the through-hole suit, the left end intercommunication of position sleeve 33 is provided with the second screw hole, the right-hand member of second screw hole communicates with the through-hole, the right-hand member of locking bolt 34 is screwed into the second screw hole inner wall and is pasted closely with the outer wall of guide bar 32; through setting up position sleeve and locking bolt, can restrict the guide bar distance of moving downwards to fix a position drill bit shift down position, improve practicality and reliability.

The utility model discloses a butterfly valve drilling auxiliary device, it is at work, at first place the butterfly valve on the rig floor top, the butterfly valve top is waited to bore the position and is located the below of drill bit, clamp tightly the butterfly valve fixedly through two sets of clamping device, open power device, power device drives the drill bit and rotates, hydraulic means passes through the bottom of hydraulic pressure pipe control hydraulic stem and moves down, the bottom of drill bit contacts with the butterfly valve top and carries out drilling work to it, after drilling is accomplished, hydraulic means passes through hydraulic pressure pipe control hydraulic stem bottom and moves up, the bottom of drill bit separates with the butterfly valve top and resumes to the initial position, turn on the motor, the motor drives the reduction gear and rotates, the reduction gear drives the gear through the pivot and rotates, the gear meshes with the circular orbit, the gear moves along the circular orbit circumferencial direction, the gear drives first fixed plate, second fixed plate and third fixed plate, the bottom of first fixed plate drives the drill bit through power device and removes, the drill bit removes to next drilling position, close the motor, the drill bit stops moving, hydraulic means passes through the bottom downstream of hydraulic pressure pipe control hydraulic stem, the bottom of drill bit and the contact of butterfly valve top and carry out drilling work to it, after the drilling is accomplished, hydraulic means passes through hydraulic pressure pipe control hydraulic stem bottom rebound, the bottom and the butterfly valve top separation of drill bit resume to initial position, the repetition is to the butterfly valve work of driling, after the drilling of butterfly valve top circumferencial direction hole site is accomplished, close power device, the drill bit stall, it can to open two sets of clamping device and take off the butterfly valve.

The utility model discloses a butterfly valve drilling auxiliary device, its mounting means, connected mode or set up the mode and be common mechanical system, as long as can reach all can implement of its beneficial effect.

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

Claims

1. A butterfly valve drilling auxiliary device comprises a workbench (1), a left upright rod (2), an upper beam (3), a hydraulic device (4), a connecting plate (5), a hydraulic rod (6), a hydraulic pipe (7), a power device (8) and a drill bit (9), wherein the left side of the top end of the workbench (1) is connected with the bottom end of the left upright rod (2), the upper side of the right end of the left upright rod (2) is connected with the left end of the upper beam (3), the right side of the top end of the upper beam (3) is connected with the bottom end of the hydraulic device (4), the right side of the bottom end of the upper beam (3) is connected with the top end of the connecting plate (5), the bottom end of the connecting plate (5) is connected with the top end of the hydraulic rod (6), the upper side of the right end of the hydraulic rod (6) is communicated with the lower side of the left end of the hydraulic pipe (7), the upper side of the left end of the hydraulic pipe (7) is communicated with the lower, the bottom end of the power device (8) is connected with the top end of the drill bit (9); the device is characterized by further comprising an installation block (10), a middle fixing block (11), two groups of first connecting rods (12), an annular rail (13), a gear (14), a rotating shaft (15), a first fixing plate (16), a second fixing plate (17), a third fixing plate (18), a speed reducer (19) and a motor (20), wherein the top end of the installation block (10) is connected with the middle of the bottom end of the hydraulic rod (6) and the bottom end of the installation block (10) is connected with the middle of the top end of the middle fixing block (11), the left end and the right end of the middle fixing block (11) are respectively connected with the inner ends of the two groups of first connecting rods (12), the outer ends of the two groups of first connecting rods (12) are connected with the inner wall of the annular rail (13), a tooth row is arranged on the outer wall of the annular rail (13) in the circumferential direction, the gear (14) is located at the left end of the annular rail (13, the first fixing plate (16) is positioned at the left lower part of the annular track (13), the bottom end of the first fixing plate (16) is connected with the top end of the power device (8), the bottom end of the rotating shaft (15) is rotatably connected with the left side of the top end of the first fixing plate (16), the top end of the rotating shaft (15) penetrates through the gear (14) and extends out to the upper part of the gear (14), the rotating shaft (15) is fixedly connected with the gear (14), the second fixing plate (17) is positioned at the left side of the gear (14), the bottom end of the second fixing plate (17) is connected with the left side of the top end of the first fixing plate (16), the top end of the second fixing plate (17) is connected with the left side of the bottom end of the third fixing plate (18), the top end of the rotating shaft (15) penetrates through the third fixing plate (18) and extends out to the top end of the third fixing plate (18), the upper side of the rotating shaft (15) is rotatably connected with the third fixing plate, the middle of the bottom end of the speed reducer (19) is connected with the top end of the rotating shaft (15), the top end of the speed reducer (19) is connected with the bottom end of the motor (20), guide devices are arranged on the right side of the top end of the hydraulic rod (6) and the right side of the bottom end of the third fixing plate (18), and the inner ends of the two groups of guide devices are slidably connected with the top end and the bottom end of the annular rail (13) respectively.

2. The drilling auxiliary device for the butterfly valve according to claim 1, further comprising two sets of clamping devices, wherein a drill floor is arranged on the right side of the top end of the workbench (1), the left side and the right side of the top end of the drill floor are respectively connected with the bottom ends of the two sets of clamping devices, each clamping device comprises a fourth fixing plate (21), a screw rod (22) and a clamping plate (23), the bottom end of the fourth fixing plate (21) is connected with the right side of the top end of the drill floor, a first threaded hole penetrating left and right is formed in the middle of the fourth fixing plate (21), the right end of the screw rod (22) is located on the right side of the fourth fixing plate (21), the left end of the screw rod (22) is screwed into the first threaded hole wall and extends to the left side of the fourth fixing plate (21), and the left end of the screw rod (.

3. A butterfly valve drilling aid according to claim 2, wherein the clamping means further comprises a runner (24), the blocking of the runner (24) being fixedly connected to the right end of the screw (22).

4. A butterfly valve drilling aid according to claim 3, wherein the clamping means further comprises a lock nut (25), the lock nut (25) being threadedly received on the right side of the threaded rod (22), the left end of the lock nut (25) being in contact with the right end of the fourth retaining plate (21).

5. The drilling auxiliary device for the butterfly valve according to claim 4, wherein the guiding device comprises a guiding plate (27), a sliding groove (26) is formed in the top end of the annular track (13) in a communication mode in the circumferential direction, the bottom end of the guiding plate (27) is located inside the left side of the sliding groove (26), and the top end of the guiding plate (27) extends out of the sliding groove (26) and is connected with the right side of the bottom end of the third fixing plate (18).

6. The drilling auxiliary device for the butterfly valve is characterized by further comprising a left support plate (28), a right support plate (29) and a roller (30), wherein the left support plate (28) is located at the left side of the right support plate (29), the top end of the left support plate (28) and the top end of the right support plate (29) are connected with the right side of the bottom end of the third fixing plate (18), the left end and the right end of the roller (30) are rotatably connected with the lower side of the right end of the left support plate (28) and the lower side of the left end of the right support plate (29), and the bottom end of the roller (30) is in contact with the left side of the top end of the annular track (13).

7. The butterfly valve drilling assist device according to claim 6, further comprising a second connecting rod (31) and a guide rod (32), wherein the right end of the second connecting rod (31) is connected to the upper side of the left end of the mounting block (10), the left end of the second connecting rod (31) is connected to the bottom end of the guide rod (32), the top end of the guide rod (32) passes through the right side of the upper beam (3) and extends above the upper beam (3), and the guide rod (32) is slidably connected to the upper beam (3).

8. The drilling auxiliary device for the butterfly valve according to claim 7, further comprising a positioning sleeve (33) and a locking bolt (34), wherein a through hole penetrating from top to bottom is formed in the middle of the positioning sleeve (33) above the upper beam (3) of the positioning sleeve (33), the positioning sleeve (33) is sleeved on the upper side of the guide rod (32) through the through hole, a second threaded hole is formed in the left end of the positioning sleeve (33) in a communicating mode, the right end of the second threaded hole is communicated with the through hole, and the right end of the locking bolt (34) is screwed into the inner wall of the second threaded hole and tightly attached to the outer wall of the guide rod (32).