CN209969661U

CN209969661U - Staple bolt formula pipeline overhauls uses portable drilling equipment

Info

Publication number: CN209969661U
Application number: CN201920147646.0U
Authority: CN
Inventors: 唐连生; 卞非
Original assignee: Yangzhou Long Heng Electric Technology Co Ltd
Current assignee: Yangzhou Long Heng Electric Technology Co Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2020-01-21
Anticipated expiration: 2029-01-28

Abstract

The utility model relates to the technical field of wall surface drilling, in particular to a hoop type portable drilling device for pipeline maintenance; the height adjusting structure of the drill bit can be improved, the convenience of drilling different height positions is improved, the steps of manually moving the device are reduced when drilling different positions with the same height, and the automation degree of the device is improved; the multifunctional drilling machine comprises a box body, wherein a working cavity is formed in the box body, a first motor is arranged in the box body, a drill bit is arranged at the right end of the first motor, a second motor is further included, a first gear is arranged at the bottom end of the second motor, a second gear is arranged on the lower side of the first gear, a first threaded rod is arranged in the working cavity, a cylinder and a third motor are further included, a movable plate is arranged at the top end of a supporting plate, a second slide way is arranged at the top end of the movable plate, and a.

Description

Staple bolt formula pipeline overhauls uses portable drilling equipment

Technical Field

The utility model relates to a technical field of wall drilling especially relates to a staple bolt formula pipeline overhauls uses portable drilling equipment.

Background

As is well known, the hoop type portable drilling device for pipeline maintenance is a device used for wall drilling in the process of pipeline maintenance on the inner side of a wall, can improve the drilling speed, and is widely used in the field of drilling devices; the conventional hoop type portable drilling device for pipeline maintenance comprises a box body, wherein a working cavity is arranged in the box body, a communication port is formed in the top end of the box body, the communication port is communicated with the top end of the working cavity, a stop door is arranged at the top end of the box body, the bottom end of the stop door is contacted with the fixed top end of the box body, the right end of the stop door is rotatably connected with the right end of the box body, a first motor is arranged in the box body, a drill bit is arranged at the right end of the first motor; when the hoop type portable drilling device for pipeline maintenance is used, the first motor drives the drill bit to rotate, and the drill bit can drill a wall surface while rotating; the hoop-type portable drilling device for pipeline maintenance is found to be difficult to adjust the height of the drill bit, difficult to drill at a higher position and low in use convenience; need the manual work to shift the device when drilling to same high different positions, the degree of automation of device is lower.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a height adjusting structure for improving the drill bit, which improves the convenience of drilling at different height positions; reduce artifical mobile device's step when drilling to same height different positions, improve the staple bolt formula pipeline of the degree of automation of device and overhaul and use portable drilling equipment.

The utility model discloses a staple bolt formula pipeline overhauls uses portable drilling equipment, including the box, be provided with the working chamber in the box, the box top is provided with the intercommunication mouth, intercommunication mouth and working chamber top intercommunication, the box top is provided with the shutter, shutter bottom and box decide the top contact, shutter right-hand member and box right-hand member rotatable coupling are provided with first motor in the box, first motor right-hand member is provided with the drill bit, the drill bit left end is connected with first motor output; the device also comprises a second motor, the second motor is arranged at the left end of the box body, the right end of the second motor is connected with the left end of the box body, the bottom end of the second motor is provided with a first gear, the top end of the first gear is connected with the output end of the second motor, the lower side of the first gear is provided with a second gear, the top end of the second gear is meshed and contacted with the right end of the first gear, a first threaded rod is arranged in the working cavity, the right end of the first threaded rod is rotatably connected with the lower side of the right end of the working cavity, the lower side of the left end of the box body is provided with a first connecting hole, the left end of the first threaded rod is connected with the middle part of the right end of the second gear after passing through the first connecting hole, the left end of the first threaded rod is rotatably connected with the first connecting hole, the outer side wall of the first threaded rod is sleeved with two groups of first threaded pipes, the inner side walls, the top end of the expansion bracket is provided with a supporting plate, the bottom end of the supporting plate is provided with a first slide way, two groups of first slide blocks are arranged in the first slide way, the bottom ends of the two groups of first slide blocks are respectively hinged with the left side of the top end and the right side of the top end of the expansion bracket, and a first motor is arranged on the upper side of the supporting plate; the device also comprises an air cylinder and a third motor, wherein a movable plate is arranged at the top end of the supporting plate, the bottom end of the movable plate is contacted with the right side of the top end of the supporting plate, the first motor is arranged at the top end of the movable plate, the bottom end of the first motor is contacted with the top end of the movable plate, the air cylinder is arranged at the left side of the top end of the supporting plate, the bottom end of the air cylinder is connected with the left side of the top end of the supporting plate, the output end of the air cylinder is provided with a connecting plate, the upper side of the connecting plate of a fixed plate is connected with the output end of the air cylinder, the lower side of the right end of the connecting plate is connected with the left end of the movable plate, the third motor is arranged at the front side of the top end of the movable plate, a second slideway, the bottom end and the top end of the connecting rod are respectively connected with the top end of the second threaded pipe and the bottom end of the first motor; the drying device comprises a working cavity, a drying box and a drying box, and is characterized by further comprising two groups of drying boxes, wherein the two groups of drying boxes are respectively arranged at the left end and the right end of the working cavity, the left end and the right end of the drying box at the left end are respectively connected with the left end and the right end of the working cavity, drying agents are respectively arranged in the two groups of drying boxes, and air holes are uniformly formed in the outer side walls of; still include first dead lever, second dead lever and third dead lever, first dead lever sets up in the shutter left end, first dead lever right-hand member is connected with the shutter left end, the second dead lever sets up in first dead lever downside, second dead lever top is articulated with first dead lever left end, the third dead lever sets up in box left end upside, third dead lever right-hand member is connected with box left end upside, second dead lever downside is provided with the intercommunicating pore, the third dead lever left end inserts to the intercommunicating pore, third dead lever lateral wall and the contact of intercommunicating pore inside wall.

The utility model discloses a staple bolt formula pipeline overhauls uses portable drilling equipment, the working chamber bottom is provided with the third slide, is provided with two sets of third sliders in the third slider, and two sets of third slider tops are connected with two sets of first screwed pipe bottoms respectively, and the backup pad top is provided with the fourth slide, is provided with the fourth slider in the fourth slide, and the fourth slider top is connected with the movable plate bottom.

The utility model discloses a staple bolt formula pipeline overhauls uses portable drilling equipment still includes the handle, and the handle sets up in the shutter top, and the handle bottom is connected with the shutter top.

The utility model discloses a staple bolt formula pipeline overhauls uses portable drilling equipment still includes the guard box, is provided with the guard chamber in the guard box, and the guard box sets up in the box left end, and the guard box right-hand member is connected with the box left end, and second motor, first gear and second gear all set up in the guard chamber.

The utility model discloses a staple bolt formula pipeline overhauls uses portable drilling equipment still includes the gusset plate, and the gusset plate sets up in the cylinder left end, and gusset plate right-hand member upside and right-hand member downside are connected with cylinder left end and backup pad left end respectively, and gusset plate left end downside is provided with the bolt, and the gusset plate downside is provided with the screw hole, and the backup pad left end is provided with the thread groove, and the bolt right-hand member passes screw thread to the thread groove after the screw hole.

The utility model discloses a staple bolt formula pipeline overhauls uses portable drilling equipment still includes four groups and removes the wheel, and four groups remove the wheel and all set up in the box bottom, and four groups remove the wheel top and are connected with box bottom left front side, left rear side, right front side and right rear side respectively, and four groups remove the wheel and all are provided with the reinforcement piece.

Compared with the prior art, the beneficial effects of the utility model are that: the second motor drives the first threaded rod to rotate, the two groups of first threaded pipes move in the left-right direction while the first threaded rod rotates, the telescopic frame extends or contracts when the two groups of first threaded pipes move in the left-right direction, the support plate moves in the up-down direction, the height of the support plate is adjusted, the first motor and the drill bit move in the up-down direction, the height of the first motor and the drill bit is adjusted, and the convenience of drilling holes at different height positions is improved; the cylinder drives the connecting plate to move in the left-right direction, the moving plate moves in the left-right direction along with the connecting plate, the first motor and the drill bit move in the left-right direction along with the moving plate, the drill bit moves in the right direction while adjusting the drilling depth, the third motor drives the second threaded rod to rotate, the second threaded pipe moves in the front-back direction along with the second threaded rod, the first motor and the drill bit move in the front-back direction along with the first threaded rod, the drilling operation of the same height and different positions is achieved, the steps of a manual moving device are reduced, and the automation degree of the device is improved.

Drawings

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

FIG. 2 is a left side view of the middle part structure of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

in the drawings, the reference numbers: 1. a box body; 2. a first motor; 3. a drill bit; 4. a second motor; 5. A first gear; 6. a second gear; 7. a first threaded rod; 8. a first threaded pipe; 9. a telescopic frame; 10. a support plate; 11. a first slider; 12. a cylinder; 13. a third motor; 14. moving the plate; 15. a connecting plate; 16. a second threaded rod; 17. a second threaded pipe; 18. a connecting rod; 19. a drying oven; 20. a first fixing lever; 21. a second fixing bar; 22. a third fixing bar; 23. a third slider; 24. a fourth slider; 25. a handle; 26. a protection box; 27. a reinforcing plate; 28. a bolt; 29. a moving wheel; 30. a working chamber.

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 3, the portable drilling device for hoop type pipeline maintenance of the present invention comprises a box body 1, a working chamber 30 is arranged in the box body 1, a communication port is arranged at the top end of the box body 1, the communication port is communicated with the top end of the working chamber 30, a stop door is arranged at the top end of the box body 1, the bottom end of the stop door is contacted with the fixed top end of the box body 1, the right end of the stop door is rotatably connected with the right end of the box body 1, a first motor 2 is arranged in the box body 1, a drill bit 3 is arranged at the right end of the first motor 2, and the left end; the device also comprises a second motor 4, the second motor 4 is arranged at the left end of the box body 1, the right end of the second motor 4 is connected with the left end of the box body 1, the bottom end of the second motor 4 is provided with a first gear 5, the top end of the first gear 5 is connected with the output end of the second motor 4, the lower side of the first gear 5 is provided with a second gear 6, the top end of the second gear 6 is meshed and contacted with the right end of the first gear 5, a first threaded rod 7 is arranged in the working chamber 30, the right end of the first threaded rod 7 is rotatably connected with the lower side of the right end of the working chamber 30, the lower side of the left end of the box body 1 is provided with a first connecting hole, the left end of the first threaded rod 7 is connected with the middle part of the right end of the second gear 6 after passing through the first connecting hole, the left end of the first threaded rod 7 is rotatably connected with the first connecting hole, the top ends of the two groups of first threaded pipes 8 are provided with telescopic frames 9, the top ends of the two groups of first threaded pipes 8 are respectively hinged with the left side of the bottom end and the right side of the bottom end of the telescopic frames 9, the top end of the telescopic frames 9 is provided with a support plate 10, the bottom end of the support plate 10 is provided with a first slide way, two groups of first slide blocks 11 are arranged in the first slide way, the bottom ends of the two groups of first slide blocks 11 are respectively hinged with the left side of the top end and the right side of the top end of; the device also comprises an air cylinder 12 and a third motor 13, wherein the top end of the supporting plate 10 is provided with a movable plate 14, the bottom end of the movable plate 14 is contacted with the right side of the top end of the supporting plate 10, the first motor 2 is arranged at the top end of the movable plate 14, the bottom end of the first motor 2 is contacted with the top end of the movable plate 14, the air cylinder 12 is arranged at the left side of the top end of the supporting plate 10, the bottom end of the air cylinder 12 is connected with the left side of the top end of the supporting plate 10, the output end of the air cylinder 12 is provided with a connecting plate 15, the upper side of the connecting plate 15 of the fixed plate is connected with the output end of the air cylinder 12, the lower side of the right end of the connecting plate 15 is connected with the left end of the movable plate 14, the third motor 13 is arranged at the front, a second threaded pipe 17 is sleeved on the outer side wall of the second threaded rod 16, a connecting rod 18 is arranged at the top end of the second threaded pipe 17, and the bottom end and the top end of the connecting rod 18 are respectively connected with the top end of the second threaded pipe 17 and the bottom end of the first motor 2; the second motor drives the first threaded rod to rotate, the two groups of first threaded pipes move in the left-right direction while the first threaded rod rotates, the telescopic frame extends or contracts when the two groups of first threaded pipes move in the left-right direction, the support plate moves in the up-down direction, the height of the support plate is adjusted, the first motor and the drill bit move in the up-down direction, the height of the first motor and the drill bit is adjusted, and the convenience of drilling holes at different height positions is improved; the cylinder drives the connecting plate to move in the left-right direction, the moving plate moves in the left-right direction along with the connecting plate, the first motor and the drill bit move in the left-right direction along with the moving plate, the drill bit moves in the right direction while adjusting the drilling depth, the third motor drives the second threaded rod to rotate, the second threaded pipe moves in the front-back direction along with the second threaded rod, the first motor and the drill bit move in the front-back direction along with the first threaded rod, the drilling operation of the same height and different positions is achieved, the steps of a manual moving device are reduced, and the automation degree of the device is improved.

The utility model discloses a staple bolt formula pipeline overhauls and uses portable drilling equipment, still include two sets of drying cabinets 19, two sets of drying cabinets 19 set up respectively in working chamber 30 left end and right-hand member, left end drying cabinet 19 left end and right-hand member drying cabinet 19 right-hand member are connected with working chamber 30 left end and right-hand member respectively, all be provided with the drier in two sets of drying cabinets 19, two sets of drying cabinet 19 lateral walls all evenly are provided with the bleeder vent; the two groups of drying boxes can respectively dry the working cavity, so that the humidity in the working cavity is reduced, the influence of water vapor on the motor and the cylinder is reduced, and the damage to the motor and the cylinder is reduced.

The utility model discloses a staple bolt formula pipeline overhauls uses portable drilling equipment, still include first dead lever 20, second dead lever 21 and third dead lever 22, first dead lever 20 sets up in the shutter left end, first dead lever 20 right-hand member is connected with the shutter left end, second dead lever 21 sets up in first dead lever 20 downside, the top of second dead lever 21 is articulated with first dead lever 20 left end, third dead lever 22 sets up in the upper side of the left end of box 1, third dead lever 22 right-hand member is connected with the upper side of the left end of box 1, second dead lever 21 downside is provided with the intercommunicating pore, the left end of third dead lever 22 inserts in the intercommunicating pore, the third dead lever 22 lateral wall contacts with the intercommunicating pore inside wall; the second dead lever rotates, inserts the third connecting rod to the communicating hole of second dead lever downside in, has realized the fixed of shutter, has reduced the removal phenomenon of shutter.

The utility model discloses a staple bolt formula pipeline overhauls and uses portable drilling equipment, the 30 bottom of working chamber is provided with the third slide, is provided with two sets of third sliders 23 in the third slider 23, and two sets of third sliders 23 top are connected with 8 bottoms of two sets of first screwed pipes respectively, and the 10 top of backup pad is provided with the fourth slide, is provided with fourth slider 24 in the fourth slide, and the 24 tops of fourth slider are connected with 14 bottoms of movable plate; two sets of third sliders can all slide in the third slide, and the setting of two sets of third sliders has improved the mobility stability of two sets of first screwed pipes, has reduced the phenomenon of rocking of two sets of first screwed pipes removal in-process.

The utility model discloses a portable drilling equipment for hoop type pipeline maintenance, still include the handle 25, the handle 25 is set up in the top of the stop gate, the bottom of the handle 25 is connected with the top of the stop gate; the operating personnel accessible handle is opened or is closed the shutter, improves the use convenience of device.

The utility model discloses a staple bolt formula pipeline overhauls and uses portable drilling equipment, still include guard box 26, be provided with the guard chamber in the guard box 26, guard box 26 sets up in the left end of box 1, the right-hand member of guard box 26 is connected with the left end of box 1, second motor 4, first gear 5 and second gear 6 all set up in the guard chamber; the protection box can protect the second motor, the first gear and the second gear, and reduces the damage phenomenon of the second motor, the first gear and the second gear in the moving process of the device.

The utility model discloses a staple bolt formula pipeline overhauls and uses portable drilling equipment, still include gusset plate 27, gusset plate 27 sets up in the left end of cylinder 12, gusset plate 27 right-hand member upside and right-hand member downside are connected with the left end of cylinder 12 and the left end of backup pad 10 respectively, gusset plate 27 left end downside is provided with bolt 28, gusset plate 27 downside is provided with the screw hole, the left end of backup pad 10 is provided with the thread groove, bolt 28 right-hand member passes the screw hole after the spiral shell adorns to the thread groove; the reinforcing plate can be used for reinforcing the air cylinder and the supporting plate, so that mutual sliding between the air cylinder and the supporting plate is reduced, and the use reliability of the device is improved.

The utility model discloses a staple bolt formula pipeline overhauls and uses portable drilling equipment, still include four groups of moving wheels 29, four groups of moving wheels 29 all set up in box 1 bottom, four groups of moving wheels 29 top respectively with box 1 bottom left front side, left rear side, right front side and right rear side connected, four groups of moving wheels 29 all are provided with the reinforcement piece; the four sets of moving wheels can improve the moving convenience of the box body, reduce the phenomenon of carrying the box body by operators and improve the use convenience of the device.

The utility model discloses a staple bolt formula pipeline overhauls uses portable drilling equipment, when it uses, rotate the second dead lever, second dead lever and third dead lever separation, the second dead lever loses the spacing effect to the box, open the shutter after, the second motor drives first threaded rod and rotates, two sets of first screwed pipes carry out the removal of left and right direction simultaneously when first threaded rod rotates, when two sets of first screwed pipes remove of left and right direction, the expansion bracket extends or contracts, the removal of backup pad in upper and lower direction has been realized, the regulation of the height of backup pad has been realized, first motor and drill bit carry out the removal of up and down direction thereupon, the regulation of the height of first motor and drill bit has been realized, after the drill bit height regulation, adjust the position of drill bit, the third motor drives the second threaded rod and rotates, the second screwed pipe carries out the removal of fore-and-aft direction thereupon, the first motor and the drill bit move along with the first motor in the front-back direction to realize the adjustment operation of the same height and different positions, the cylinder drives the connecting plate to move in the left-right direction, the moving plate moves along with the moving plate in the left-right direction, the first motor and the drill bit move along with the moving plate in the left-right direction, the adjustment of the drilling depth is realized when the drill bit moves in the right direction, the first motor drives the drill bit to rotate to realize the drilling operation of the wall, in addition, two sets of drying cabinets can be respectively to carrying out the drying to the work intracavity, reduce the humidity in the work intracavity, reduce the influence of vapor to motor and cylinder, and two sets of third sliders can all slide in the third slide, and the setting of two sets of third sliders has improved the mobility stability of two sets of first screwed pipes, and the setting of four groups of removal wheels can improve the removal convenience of box, reduces the phenomenon that operating personnel carried the box.

The utility model discloses a portable drilling device for hoop type pipeline maintenance, the installation mode, the connection mode or the setting mode of which are common mechanical modes, and the portable drilling device can be implemented as long as the beneficial effects can be achieved; and the motor and the cylinder are provided with the control module and the electric wire, and can be used after being plugged, without changing the internal structure.

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 hoop type portable drilling device for pipeline maintenance comprises a box body (1), wherein a working cavity (30) is arranged in the box body (1), a communication port is formed in the top end of the box body (1), the communication port is communicated with the top end of the working cavity (30), a stop door is arranged at the top end of the box body (1), the bottom end of the stop door is contacted with the fixed top end of the box body (1), the right end of the stop door is rotatably connected with the right end of the box body (1), a first motor (2) is arranged in the box body (1), a drill bit (3) is arranged at the right end of the first motor (2), and the left end of the drill bit (3) is connected; the device is characterized by further comprising a second motor (4), the second motor (4) is arranged at the left end of the box body (1), the right end of the second motor (4) is connected with the left end of the box body (1), a first gear (5) is arranged at the bottom end of the second motor (4), the top end of the first gear (5) is connected with the output end of the second motor (4), a second gear (6) is arranged on the lower side of the first gear (5), the top end of the second gear (6) is in meshing contact with the right end of the first gear (5), a first threaded rod (7) is arranged in the working chamber (30), the right end of the first threaded rod (7) is rotatably connected with the lower side of the right end of the working chamber (30), a first connecting hole is arranged on the lower side of the left end of the box body (1), the left end of the first threaded rod (7) is connected with the middle part of the right end of the second gear (6) after penetrating, the outer side wall of the first threaded rod (7) is sleeved with two groups of first threaded pipes (8), the inner side walls of the two groups of first threaded pipes (8) are respectively contacted with the left side and the right side of the outer side wall of the first threaded rod (7), the top ends of the two groups of first threaded pipes (8) are respectively hinged with the left side and the right side of the bottom end of the telescopic frame (9), the top end of the telescopic frame (9) is provided with a supporting plate (10), the bottom end of the supporting plate (10) is provided with a first slide way, two groups of first sliding blocks (11) are arranged in the first slide way, the bottom ends of the two groups of first sliding blocks (11) are respectively hinged with the left side and the right side of the top end of the telescopic frame (9), and the first motor (2; the device is characterized by further comprising an air cylinder (12) and a third motor (13), a movable plate (14) is arranged at the top end of the supporting plate (10), the bottom end of the movable plate (14) is in contact with the right side of the top end of the supporting plate (10), the first motor (2) is arranged at the top end of the movable plate (14), the bottom end of the first motor (2) is in contact with the top end of the movable plate (14), the air cylinder (12) is arranged on the left side of the top end of the supporting plate (10), the bottom end of the air cylinder (12) is connected with the left side of the top end of the supporting plate (10), a connecting plate (15) is arranged at the output end of the air cylinder (12), the upper side of the connecting plate (15) of a fixed plate is connected with the output end of the air cylinder (12), the lower side of the right end of the connecting plate (15) is connected with the left end of the movable plate (14), the third motor (13) is, the output end of the third motor (13) is connected with the front end of the second threaded rod (16), a second threaded pipe (17) is sleeved on the outer side wall of the second threaded rod (16), a connecting rod (18) is arranged at the top end of the second threaded pipe (17), and the bottom end and the top end of the connecting rod (18) are respectively connected with the top end of the second threaded pipe (17) and the bottom end of the first motor (2); the drying device is characterized by further comprising two groups of drying boxes (19), wherein the two groups of drying boxes (19) are respectively arranged at the left end and the right end of the working cavity (30), the left end and the right end of the left end drying box (19) and the right end of the right end drying box (19) are respectively connected with the left end and the right end of the working cavity (30), drying agents are respectively arranged in the two groups of drying boxes (19), and air holes are uniformly formed in the outer side walls of the two groups of drying boxes (19); still include first dead lever (20), second dead lever (21) and third dead lever (22), first dead lever (20) set up in the shutter left end, first dead lever (20) right-hand member is connected with the shutter left end, second dead lever (21) set up in first dead lever (20) downside, second dead lever (21) top is articulated with first dead lever (20) left end, third dead lever (22) set up in box (1) left end upside, third dead lever (22) right-hand member is connected with box (1) left end upside, second dead lever (21) downside is provided with the intercommunicating pore, third dead lever (22) left end inserts to the intercommunicating pore in, third dead lever (22) lateral wall and intercommunicating pore inside wall contact.

2. The hoop-type portable drilling device for pipeline maintenance, as claimed in claim 1, wherein a third slide way is provided at the bottom end of the working chamber (30), two sets of third slide blocks (23) are provided in the third slide blocks (23), the top ends of the two sets of third slide blocks (23) are respectively connected with the bottom ends of the two sets of first threaded pipes (8), a fourth slide way is provided at the top end of the supporting plate (10), a fourth slide block (24) is provided in the fourth slide way, and the top end of the fourth slide block (24) is connected with the bottom end of the moving plate (14).

3. The hoop type portable drilling device for pipeline maintenance as claimed in claim 2, further comprising a handle (25), wherein the handle (25) is arranged at the top end of the shutter, and the bottom end of the handle (25) is connected with the top end of the shutter.

4. The hoop type portable drilling device for pipeline maintenance as claimed in claim 3, further comprising a protection box (26), wherein a protection cavity is arranged in the protection box (26), the protection box (26) is arranged at the left end of the box body (1), the right end of the protection box (26) is connected with the left end of the box body (1), and the second motor (4), the first gear (5) and the second gear (6) are arranged in the protection cavity.

5. The hoop type portable drilling device for pipeline maintenance as claimed in claim 4, further comprising a reinforcing plate (27), wherein the reinforcing plate (27) is disposed at the left end of the cylinder (12), the upper side and the lower side of the right end of the reinforcing plate (27) are respectively connected with the left end of the cylinder (12) and the left end of the support plate (10), a bolt (28) is disposed at the lower side of the left end of the reinforcing plate (27), a threaded hole is disposed at the lower side of the reinforcing plate (27), a threaded groove is disposed at the left end of the support plate (10), and the right end of the bolt (28) passes through the threaded hole and then is screwed into the threaded groove.

6. The hoop type portable drilling device for overhauling pipelines as claimed in claim 5, further comprising four sets of moving wheels (29), wherein the four sets of moving wheels (29) are all arranged at the bottom end of the box body (1), the top ends of the four sets of moving wheels (29) are respectively connected with the left front side, the left rear side, the right front side and the right rear side of the bottom end of the box body (1), and the four sets of moving wheels (29) are all provided with reinforcing plates.