CN108771797B

CN108771797B - Electric expander

Info

Publication number: CN108771797B
Application number: CN201810949123.8A
Authority: CN
Inventors: 柳斌
Original assignee: Jiangxi Dingfeng Equipment Technology Co ltd
Current assignee: Jiangxi Dingfeng Equipment Technology Co ltd
Priority date: 2018-08-20
Filing date: 2018-08-20
Publication date: 2023-07-21
Anticipated expiration: 2038-08-20
Also published as: CN108771797A

Abstract

The invention relates to the technical field of rescue and relief equipment, and discloses an electric expander, which comprises a protective shell, wherein the inner wall of the protective shell is movably provided with two rotary rings, an expander main body is fixedly sleeved between the two rotary rings, the left end of the expander main body penetrates through one rotary ring and extends to the outer part of the protective shell and is fixedly provided with an expansion head, the outer part of the expander main body is movably sleeved with the left end of the protective shell, and the top surface of the protective shell is fixedly provided with a hand-held handle. This electric expander is through rotating the expansion head for the expansion head can be brought the expander main part and rotate, through the positioning spring, provides an effort for the locating plate, makes the locating plate can promote the reference column and moves down and insert the locating hole, thereby fixes the expander main part, finally realizes adjusting the purpose of expansion head expansion angle, has improved the practicality of this electric expander.

Description

Electric expander

Technical Field

The invention relates to the technical field of rescue and relief equipment, in particular to an electric expander.

Background

The electric expander is necessary equipment in rescue work, plays an important role in the rescue work, has powerful expanding, tearing and pulling functions, can perform high-load rescue operation, has the functions of moving and lifting obstacles, can pry open gaps and expand the gaps into channels, deforms a metal structure, tears a steel plate on the surface of a vehicle body, and opens a life channel for dangerous personnel, so that the rescue personnel can timely and quickly rescue the dangerous personnel.

However, the expansion head of the existing electric expander cannot rotate, an operator is required to change the expansion direction of the expansion head by changing the manner of the portable electric expander, the wrist load of the operator is increased, the operator cannot continuously perform expansion work, the optimal time for rescue is delayed, the length of the expander is fixed, and when the position requiring expansion is located at a position with narrow space, the operator cannot reach a proper operation position, so that rescue work cannot be smoothly performed, and the applicability is poor, so that the electric expander with wide expansion direction adjustment and applicability is needed to be designed.

Disclosure of Invention

The invention provides an electric expander, which has the advantages of adjustable expanding direction and wide applicability, and solves the problems that an expanding head of the existing electric expander cannot rotate, an operator is required to change the expanding direction of the expanding head by changing the way of carrying the electric expander, the wrist load of the operator is increased, the operator cannot continuously expand, the optimal time for rescue is delayed, the length of the expander is fixed, and when the position requiring expansion is positioned at a position with narrow space, the operator cannot reach a proper operating position, so that rescue work cannot be smoothly performed, and the applicability is poor.

The invention provides the following technical scheme: the utility model provides an electric expander, includes the protective housing, the inner wall movable mounting of protective housing has rotatory ring, the quantity of rotatory ring is two rotatory ring is fixed to be cup jointed the expander main part between the two rotatory ring, the left end of expander main part runs through a rotatory ring and extends to the outside of protective housing and fixed mounting has the expansion head, the outside of expander main part is movably cup jointed with the left end of protective housing, the top surface fixed mounting of protective housing has the hand strap handle, the inner wall fixed mounting of hand strap handle has a fixed plate, the quantity of fixed plate is two, two fixed plates are located the left and right sides of hand strap handle respectively, the bottom surface of fixed plate is connected with the limiting plate through the transmission of location spring, the bottom surface fixed mounting of limiting plate has the reference column, the top surface activity of hand strap handle inner chamber has cup jointed the rotary rod, the bottom end of rotary rod extends to the outside of hand strap handle and fixed mounting has butterfly-shaped adjusting head, the outside of rotary rod and the bottom surface movable cup joint of hand strap handle, the outside fixed connection has the gyro wheel that is located the inside the hand strap handle, the fixed connection has a hand strap handle, a left and right side fixed mounting has the fixed plate, a first fixed rope and another fixed rope fixed connection draw wire rope fixed through the first fixed connection and another fixed connection with another fixed connection of another side draw wire rope, another fixed connection draw wire rope fixed connection one end fixed connection with another end fixed connection of another end, the right end activity of fixed bolster has cup jointed movable bolster, movable bolster's right-hand member fixed mounting has the closing plate, the right flank fixed mounting of closing plate has expansion control switch, the right-hand member fixedly connected with transmission electric wire of expander main part, the other end of transmission electric wire runs through the right flank of protective housing and extends to fixed bolster's inside, the inside one end of transmission electric wire position fixed bolster passes fixed bolster and movable bolster in proper order and runs through closing plate and with expansion control switch's left surface fixed connection, the right-hand member on both sides is all fixed mounting has the stopper about the fixed bolster, the left end fixed mounting of movable bolster top surface has the perpendicular handle that is located the rubber sleeve left side, the top surface of perpendicular handle inner chamber is connected with the joint board through joint spring drive, the outside of joint board and the inner wall activity cup joint of perpendicular handle, the bottom surface fixed mounting of joint board has the joint post, the top surface fixed mounting of joint board has the regulation pole, the top of regulation pole passes the joint spring and runs through the top surface of perpendicular handle and fixedly cup joints the top surface swing joint of perpendicular handle.

Preferably, the inner wall fixed mounting of protective housing has the locating plate, the quantity of locating plate is four, four the locating plate uses two to divide into two sets of as a set of, and two locating plates in same group are located the left and right sides of a rotatory ring respectively.

Preferably, the upper and lower surfaces of the inner cavity of the protective housing are provided with arc grooves which are positioned right above and right below the rotary ring, the inner part of the arc groove is movably provided with a ball, and the outer surface of the rotary ring is provided with an arc track which is matched with the ball.

Preferably, the bottom of reference column runs through the top surface of protective housing and extends to the inside of protective housing, the outside of reference column cup joints with the top surface activity of protective housing, the locating hole with reference column looks adaptation has been seted up to the front of rotatory ring.

Preferably, the inner wall fixed mounting of portable handle has the dead lever, the outside activity of dead lever has cup jointed the guide roll, the quantity of guide roll is two, two guide rolls are walked around respectively to first traction rope and second traction rope.

Preferably, the outside of the movable sleeve is fixedly sleeved with a rubber sleeve, the outside of the rubber sleeve is provided with anti-skid patterns, the diameter value of the sealing plate is larger than the outer diameter value of the movable sleeve, and the outer diameter value of the rubber sleeve is larger than the diameter value of the sealing plate.

Preferably, the right side of protective housing has seted up the movable hole, the diameter value of movable hole is greater than the diameter value of transmission electric wire, the connecting hole has been seted up to the left side of closing plate, the diameter value of connecting hole is greater than the diameter value of transmission electric wire.

Preferably, the outside activity of transmission line has cup jointed the backup pad, the left surface and the fixed sleeve's of backup pad right-hand member fixed connection, the left surface of backup pad is connected with the traction plate through traction spring transmission, traction spring cup joints with the outside activity of transmission line, the traction plate cup joints with the outside of transmission line is fixed, the outside of traction plate cup joints with fixed sleeve's inner wall activity.

Preferably, the top surface of the fixed sleeve is provided with a clamping hole matched with the clamping column, the bottom end of the clamping column penetrates through the top surface of the movable sleeve and extends to the inside of the movable sleeve to be movably clamped with the clamping hole, and the outside of the clamping column is movably sleeved with the top surface of the movable sleeve.

The invention has the following beneficial effects:

1. this electric expander, through rotating butterfly adjustment head, make butterfly adjustment head can take the gyro wheel to rotate through the rotary rod, through the gyro wheel, make first traction rope and second traction rope can twine in the outside of gyro wheel, thereby make first traction rope and second traction rope pull two reference columns respectively and upwards remove, and then make the bottom of reference column remove from the locating hole, through rotating the expansion head, make the expansion head can take the expander main part to rotate, through positioning spring, an effort is provided for the limiting plate, make the limiting plate can promote the reference column and move downwards and inject the locating hole, thereby fix the expander main part, finally realize adjusting the purpose of expansion head expansion angle, the practicality of this electric expander has been improved.

2. This electronic expander, pull the cap through upwards pulling, provide an effort for adjusting the pole, make the pole can be through the joint board and take the joint post to upwards remove, thereby make the bottom of joint post follow joint hole and come out, through pulling movable sleeve right, make movable sleeve slide right in fixed sleeve's outside, distance between movable sleeve and the protective housing has been increased, through the joint spring, provide an effort for the joint board, make the joint board can promote the joint post and move down and insert the joint hole, thereby with fixed sleeve and the stable fixed of movable sleeve together, finally realize adjusting the purpose of this electronic expander length, the suitability of this electronic expander has been increased, the practicality of this electronic expander has been improved.

3. This electric expander provides an impetus for traction spring through the backup pad for traction spring can promote the traction plate and remove left, thereby make the transmission line that is located the traction plate right side can be in the state of stretching all the time, avoided the in-process transmission line bending winding that movable sleeve moved left, the problem that blocks movable sleeve and remove, ensured movable sleeve can be smooth from side to side and removed, finally realized adjusting the purpose of this electric expander length, increased the suitability of this electric expander, improved the practicality of this electric expander.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view of the left-hand internal structure of the active cannula of FIG. 1;

FIG. 4 is an enlarged schematic view of the structure of the present invention at A;

FIG. 5 is an enlarged schematic view of the structure of the present invention at B;

FIG. 6 is an enlarged schematic view of the structure of the present invention at C.

In the figure: 1. a protective shell; 2. a positioning plate; 3. rotating the circular ring; 4. a ball; 5. a dilator body; 6. an expansion head; 7. a carrying handle; 8. a fixing plate; 9. a positioning spring; 10. a limiting plate; 11. positioning columns; 12. a fixed rod; 13. a guide roller; 14. a rotating rod; 15. butterfly-shaped adjusting heads; 16. a roller; 17. a first traction rope; 18. a second traction rope; 19. fixing the sleeve; 20. a movable sleeve; 21. a sealing plate; 22. an expansion control switch; 23. a rubber sleeve; 24. a transmission wire; 25. a traction plate; 26. a traction spring; 27. a limiting block; 28. a vertical handle; 29. a clamping spring; 30. a clamping plate; 31. a clamping column; 32. an adjusting rod; 33. a traction cap; 34. and a support plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-6, an electric expander comprises a protective shell 1, wherein a movable hole is formed in the right side surface of the protective shell 1, the diameter value of the movable hole is larger than that of a transmission wire 24, a connecting hole is formed in the left side surface of a sealing plate 21, the diameter value of the connecting hole is larger than that of the transmission wire 24, a heat dissipation hole is formed in the outer surface of the protective shell 1, heat generated by an expander main body 5 can be timely dissipated by utilizing the heat dissipation hole, the practicability of the electric expander is improved, arc grooves which are positioned right above and below a rotary ring 3 are formed in the upper surface and the lower surface of an inner cavity of the protective shell 1, a ball 4 is movably mounted in the arc groove, an arc track matched with the ball 4 is formed in the outer surface of the rotary ring 3, friction force between the rotary ring 3 and the inner wall of the protective shell 1 is reduced by utilizing the arc groove, the arc track and the ball 4, the utility model has the advantages of convenient operation personnel to rotate the expander main body 5 through the expansion head 6, reduced the workload of the operation personnel, improved the practicality of the electric expander, the inner wall of the protective housing 1 is fixedly provided with the positioning plates 2, the number of the positioning plates 2 is four, the four positioning plates 2 are divided into two groups by two, the two positioning plates 2 in the same group are respectively positioned at the left side and the right side of one rotating circular ring 3, the rotating circular ring 3 can rotate along a given track by utilizing the positioning plates 2, the left and right shaking amplitude of the rotating circular ring 3 is reduced, the stability of the electric expander is increased, the practicability of the electric expander is improved, the inner wall of the protective housing 1 is movably provided with the rotating circular rings 3, the number of the rotating circular rings 3 is two, the expander main body 5 is fixedly sleeved between the two rotating circular rings 3, the left end of the expander main body 5 penetrates through a rotary ring 3 and extends to the outside of the protective shell 1, an expansion head 6 is fixedly arranged, the outside of the expander main body 5 is movably sleeved with the left end of the protective shell 1, the top surface of the protective shell 1 is fixedly provided with a carrying handle 7, the inner wall of the carrying handle 7 is fixedly provided with a fixed rod 12, the outside of the fixed rod 12 is movably sleeved with guide rollers 13, the number of the guide rollers 13 is two, a first traction rope 17 and a second traction rope 18 respectively bypass the two guide rollers 13, the friction force between the first traction rope 17 and the second traction rope 18 and the inner wall of the carrying handle 7 is reduced by utilizing the cooperation of the fixed rod 12 and the guide rollers 13, the service lives of the first traction rope 17 and the second traction rope 18 are prolonged, the practicability of the electric expander is improved, the inner wall of the carrying handle 7 is fixedly provided with a fixed plate 8, the number of the fixing plates 8 is two, the two fixing plates 8 are respectively positioned at the left end and the right end of the carrying handle 7, the bottom surface of the fixing plate 8 is connected with a limiting plate 10 through a positioning spring 9 in a transmission way, the bottom surface of the limiting plate 10 is fixedly provided with a positioning column 11, the bottom end of the positioning column 11 penetrates through the top surface of the protective shell 1 and extends into the protective shell 1, the outer part of the positioning column 11 is movably sleeved with the top surface of the protective shell 1, the front surface of the rotating ring 3 is provided with a positioning hole matched with the positioning column 11, the positioning column 11 can be inserted into the inside of the positioning hole and fix the rotating ring 3 by utilizing the positioning hole, so that the rotating ring 3 is fixedly provided with an expanding head 6 through an expander main body 5, the expanding head 6 is finally fixedly arranged at the position of the appointed expanding direction, the practicability of the electric expander is improved, the top surface of the inner cavity of the carrying handle 7 is movably sleeved with a rotating rod 14, the bottom end of the rotary rod 14 extends to the outside of the handle 7 and is fixedly provided with a butterfly-shaped adjusting head 15, the outside of the rotary rod 14 is movably sleeved with the bottom surface of the handle 7, the outside of the rotary rod 14 is fixedly sleeved with a roller 16 positioned in the handle 7, the left side surface of the roller 16 is fixedly provided with a first traction rope 17, the other end of the first traction rope 17 penetrates through a fixed plate 8 and passes through a positioning spring 9 and is fixedly connected with a limiting plate 10, the outside of the first traction rope 17 is movably sleeved with the fixed plate 8, the right side surface of the roller 16 is fixedly provided with a second traction rope 18, the other end of the second traction rope 18 penetrates through another fixed plate 8 and passes through another positioning spring 9 and is fixedly connected with another limiting plate 10, the outside of the first traction rope 17 is movably sleeved with the other fixed plate 8, the right end of the protective shell 1 is fixedly provided with a fixed sleeve 19, the top surface of the fixed sleeve 19 is provided with a clamping hole matched with the clamping column 31, the bottom end of the clamping column 31 penetrates through the top surface of the movable sleeve 20 and extends to the inside of the movable sleeve 20 and is movably clamped with the clamping hole, the outside of the clamping column 31 is movably sleeved with the top surface of the movable sleeve 20, the clamping column 31 can stably clamp the fixed sleeve 19 and the movable sleeve 20 together by utilizing the clamping hole, the distance between the movable sleeve 20 and the protective shell 1 is stable and unchanged, the practicability of the electric expander is improved, the right end of the fixed sleeve 19 is movably sleeved with the movable sleeve 20, the outside of the movable sleeve 20 is fixedly sleeved with the rubber sleeve 23, the outside of the rubber sleeve 23 is provided with anti-skid threads, the diameter value of the sealing plate 21 is larger than the outer diameter value of the movable sleeve 20, the outer diameter value of the rubber sleeve 23 is larger than the diameter value of the sealing plate 21, the comfort of an operator using the electric expander is increased by utilizing the cooperation of the rubber sleeve 23 and the anti-skid patterns, the problem that the operator is dangerous due to sliding of hands and the movable sleeve 20 when using the electric expander is avoided, the practicability of the electric expander is improved, the sealing plate 21 is fixedly arranged at the right end of the movable sleeve 20, the expansion control switch 22 is fixedly arranged at the right side surface of the sealing plate 21, the right end of the expander main body 5 is fixedly connected with the transmission wire 24, the supporting plate 34 is movably sleeved outside the transmission wire 24, the left side surface of the supporting plate 34 is fixedly connected with the right end of the fixed sleeve 19, the left side surface of the supporting plate 34 is in transmission connection with the traction plate 25 through the traction spring 26, the traction spring 26 is movably sleeved outside the transmission wire 24, the traction plate 25 is fixedly sleeved outside the transmission wire 24, the traction plate 25 is movably sleeved outside the fixed sleeve 19, by utilizing the supporting plate 34, an impetus is provided for the traction spring 26, so that the traction spring 26 can push the traction plate 25 to move leftwards, the transmission wire 24 positioned on the right side of the traction plate 25 can be always in a straight state, the problem that the transmission wire 24 is bent and wound in the process of moving the movable sleeve 20 leftwards to stop the movement of the movable sleeve 20 is avoided, the practicability of the electric expander is improved, the other end of the transmission wire 24 penetrates through the right side surface of the protective shell 1 and extends to the inside of the fixed sleeve 19, one end of the transmission wire 24 positioned inside the fixed sleeve 19 sequentially penetrates through the fixed sleeve 19 and the movable sleeve 20 and penetrates through the sealing plate 21 and is fixedly connected with the left side surface of the expansion control switch 22, the limit blocks 27 are fixedly arranged at the right ends of the upper surface and the lower surface of the fixed sleeve 19, the fixed sleeve 19 cannot be separated from the movable sleeve 20 by utilizing the limit blocks 27, simultaneously, the gap between the right ends of the upper surface and the lower surface of the fixed sleeve 19 and the inner wall of the movable sleeve 20 is reduced, the shaking amplitude of the fixed sleeve 19 in the movable sleeve 20 is reduced, the practicability of the electric expander is improved, the vertical handle 28 positioned on the left side of the rubber sleeve 23 is fixedly arranged at the left end of the top surface of the movable sleeve 20, an operator can lift and operate the electric expander better and more stably by utilizing the vertical handle 28, the top surface of the inner cavity of the vertical handle 28 is connected with a clamping plate 30 through a clamping spring 29 in a transmission manner, the outer part of the clamping plate 30 is movably sleeved with the inner wall of the vertical handle 28, a clamping post 31 is fixedly arranged on the bottom surface of the clamping plate 30, an adjusting rod 32 is fixedly arranged on the top surface of the clamping plate 30, the top end of the adjusting rod 32 penetrates through the clamping spring 29 and penetrates through the top surface of the vertical handle 28, a traction cap 33 is fixedly sleeved with the top surface of the vertical handle 28, and the traction cap 33 is movably connected with the top surface of the vertical handle 28.

During operation, the butterfly-shaped adjusting head 15 is rotated firstly, then the butterfly-shaped adjusting head 15 rotates with the roller 16 through the rotary rod 14, then the first traction rope 17 and the second traction rope 18 are slowly wound outside the roller 16, then the two limiting plates 10 move upwards with the two positioning columns 11 under the traction action of the first traction rope 17 and the second traction rope 18 respectively, then the bottom ends of the positioning columns 11 move out of the positioning holes, then the expander body 5 is rotated through the expansion head 6, then the expansion direction of the expander head 6 reaches the appointed requirement, then the limiting plates 10 push the positioning columns 11 to move downwards under the action force of the positioning springs 9 and insert into the positioning holes, then the expander body 5 is fixed, then the expansion direction of the expander head 6 is fixed, then the traction cap 33 is pulled upwards, then the regulating rod 32 moves upwards with the clamping plate 30 under the traction of the traction cap 33, then the clamping plate 30 moves upwards with the clamping columns 31, then the bottom ends of the clamping columns 31 move out of the clamping holes, then the movable sleeve 20 is pulled rightwards, then the movable sleeve 20 is pushed out of the fixed sleeve 19, then the movable sleeve 20 slides rightwards, the clamping sleeve 20 is pushed to the position between the movable sleeve 1 and the appointed position is pushed to reach the appointed position, the appointed expansion sleeve is required to be inserted, then the fixed sleeve is required to be expanded, the expansion sleeve is required to be inserted, and the expansion position is required to be expanded, the expansion sleeve is controlled to be moved, then the expansion position is fixed, and the expansion sleeve is required to be moved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. An electric dilator comprising a protective shell (1), characterized in that: the utility model discloses a rotary rod (14) of a rotary electric machine, which is characterized in that a rotary circular ring (3) is movably arranged on the inner wall of a protective shell (1), the number of the rotary circular rings (3) is two, an expander main body (5) is fixedly sleeved between the two rotary circular rings (3), the left end of the expander main body (5) penetrates through one rotary circular ring (3) and extends to the outer part of the protective shell (1) and is fixedly provided with an expanding head (6), the outer part of the expander main body (5) is movably sleeved with the left end of the protective shell (1), the top surface of the protective shell (1) is fixedly provided with a carrying handle (7), the inner wall of the carrying handle (7) is fixedly provided with a fixed plate (8), the number of the fixed plate (8) is two, the two fixed plates (8) are respectively positioned at the left end and the right end of the carrying handle (7), the bottom surface of the fixed plate (8) is in a transmission way through a positioning spring (9) to be connected with a limiting plate (10), the bottom surface of the limiting plate (10) is fixedly provided with a positioning column (11), the top surface of the inner cavity of the expander main body (5) is movably sleeved with the left end of the protective shell (1), the top surface of the rotary rod (14) is movably sleeved with the rotating rod (14), the bottom surface of the rotating rod (14) is fixedly sleeved with the outer part of the rotating rod (14) and is fixedly sleeved with the rotating rod (14), the outside of rotary rod (14) is fixed to be cup jointed with gyro wheel (16) that is located the inside of hand (7), the left surface fixed mounting of gyro wheel (16) has first traction rope (17), the other end of first traction rope (17) runs through a fixed plate (8) and passes a positioning spring (9) and be fixedly connected with a limiting plate (10), the outside of first traction rope (17) and a fixed plate (8) activity cup joint, the right flank fixed mounting of gyro wheel (16) has second traction rope (18), the other end of second traction rope (18) runs through another fixed plate (8) and passes another positioning spring (9) and be fixedly connected with another limiting plate (10), the outside of first traction rope (17) and another fixed plate (8) activity cup joint, the right-hand member fixed mounting of protective housing (1) has fixed sleeve (19), the right-hand member movable sleeve (20) of fixed sleeve (19) has, the right-hand member fixed mounting of movable sleeve (20) has second traction rope (21), the right-hand member (21) fixed mounting has the expansion controller (24) of closing plate (5) has expansion main part (24), the other end of the transmission wire (24) penetrates through the right side surface of the protective shell (1) and extends to the inside of the fixed sleeve (19), one end of the transmission wire (24) positioned inside the fixed sleeve (19) sequentially penetrates through the fixed sleeve (19) and the movable sleeve (20) and penetrates through the sealing plate (21) and is fixedly connected with the left side surface of the expansion control switch (22), limiting blocks (27) are fixedly arranged at the right ends of the upper surface and the lower surface of the fixed sleeve (19), a vertical handle (28) positioned at the left side of the rubber sleeve (23) is fixedly arranged at the left end of the top surface of the movable sleeve (20), a clamping plate (30) is connected to the top surface of an inner cavity of the vertical handle (28) through a clamping spring (29) in a transmission manner, a clamping post (31) is fixedly arranged at the bottom surface of the clamping plate (30), an adjusting rod (32) penetrates through the top surface of the clamping spring (29) and penetrates through the top surface of the vertical handle (28), and is movably connected with a traction cap (33) in a sleeved mode, and the traction cap (33) is movably connected to the top surface of the vertical handle (28);

the bottom end of the positioning column (11) penetrates through the top surface of the protective shell (1) and extends to the inside of the protective shell (1), the outside of the positioning column (11) is movably sleeved with the top surface of the protective shell (1), and a positioning hole matched with the positioning column (11) is formed in the front surface of the rotary ring (3);

the inner wall of the portable handle (7) is fixedly provided with a fixed rod (12), the outside of the fixed rod (12) is movably sleeved with guide rollers (13), the number of the guide rollers (13) is two, and the first traction rope (17) and the second traction rope (18) respectively bypass the two guide rollers (13);

the outer part of the movable sleeve (20) is fixedly sleeved with a rubber sleeve (23), anti-skid patterns are arranged outside the rubber sleeve (23), the diameter value of the sealing plate (21) is larger than the outer diameter value of the movable sleeve (20), and the outer diameter value of the rubber sleeve (23) is larger than the diameter value of the sealing plate (21);

the outside of the transmission wire (24) is movably sleeved with a supporting plate (34), the left side surface of the supporting plate (34) is fixedly connected with the right end of the fixed sleeve (19), the left side surface of the supporting plate (34) is in transmission connection with a traction plate (25) through a traction spring (26), the traction spring (26) is movably sleeved with the outside of the transmission wire (24), the traction plate (25) is fixedly sleeved with the outside of the transmission wire (24), and the outside of the traction plate (25) is movably sleeved with the inner wall of the fixed sleeve (19);

the top surface of fixed sleeve (19) is offered and is had the joint hole with joint post (31) looks adaptation, the bottom of joint post (31) runs through the top surface of movable sleeve (20) and extends to the inside of movable sleeve (20) and with joint hole activity joint, the outside of joint post (31) cup joints with the top surface activity of movable sleeve (20).

2. An electrically powered dilator according to claim 1 wherein: the inner wall fixed mounting of protective housing (1) has locating plate (2), the quantity of locating plate (2) is four, four locating plate (2) use two to divide into two sets of as a set of, and two locating plate (2) in same group are located the left and right sides of a rotatory ring (3) respectively.

3. An electrically powered dilator according to claim 1 wherein: the utility model discloses a rotary ring, including protective housing (1) inner chamber, arc wall, ball (4) are all offered to the upper and lower two sides of protective housing (1) inner chamber, arc wall directly over rotatory ring (3) and under, the inside movable mounting in arc wall has ball (4), the arc track with ball (4) looks adaptation has been offered to the surface of rotatory ring (3).

4. An electrically powered dilator according to claim 1 wherein: the right side of protective housing (1) has seted up the movable hole, the diameter value in movable hole is greater than the diameter value of transmission electric wire (24), the connecting hole has been seted up to the left side of closing plate (21), the diameter value in connecting hole is greater than the diameter value of transmission electric wire (24).