CN209040218U - Convenient for fixed Domestic sewer dredger - Google Patents

Abstract

The utility model discloses a kind of convenient for fixed Domestic sewer dredger, cleaning mechanism including the tamper for clearing up in sewer, the motion bar of the movement of any direction is carried out for controlling cleaning mechanism in sewer and for driving motion bar to carry out mobile driving mechanism in sewer, the cleaning mechanism includes the dredger for clearing up the tamper to result in blockage to sewer, the dredger includes multiple dredging bar and twist rod for the tamper in dredging sewer, the twist rod is equipped with limit plate, the limit plate is equipped with the liquid storage mechanism of the dredging agent for storing auxiliary dredging sewer；By the setting of above-mentioned liquid storage mechanism, it can effectively realize fixation to dredging agent and automatically to the release of dredging agent, allow dredging agent when the device acts on cleaning tamper, reacted with tamper, greatly improve the dredging efficiency to tamper.

Description

Convenient for fixed Domestic sewer dredger

Technical field

The utility model belongs to consumer goods industries, more particularly, to a kind of convenient for fixed Domestic sewer dredger.

Background technique

Currently, the design of residential building sewer generallys use V type structure, i.e., the branch of main sewer pipe and user are lauched Pipeline is V-shaped, and the stink in sewer is returned into interior in order to prevent, is designed with water back bending (also referred to as S in branch's sewer pipe It is curved), stink is lived using the water seal wherein stored.Hair in life when the residue of washing bowls or vegetables, sundries, grease, bathing etc. is very It is easy to fall into sewer, and remains in crook of turning one's coat, cause sewer blockage, influence the normal life of people.

A kind of sewer dredger is disclosed in the open file of Publication No. CN204849960U, it can be by dredging Siphunculus realizes the dredging of sewer, and design is scientific and reasonable, and structure is simple, easy to use, improves working efficiency；But the dress V-type sewer pipe can not be dredged by setting, very impracticable.

A kind of existing device can realize the cleaning that tamper is carried out to sewer inside, effectively in order to dredge down Water channel improves people's lives comfort, and the setting of motion bar, various curved sewers is adapted to, to various bendings Sewer carry out pipe-dredging be effectively increased the scope of application of the device such as V-type sewer, improve the device Practicability；But the device is when dredging tamper, tamper is not easy slack and undisciplined, is unfavorable in this way to tamper Dredging, it is very troublesome.

Utility model content

The utility model for overcome the deficiencies in the prior art, provides a kind of being convenient for for cleaning effect that can reinforce tamper Fixed Domestic sewer dredger.

To achieve the goals above, the utility model uses following technical scheme: a kind of convenient for fixed domestic sewer Dredge, cleaning mechanism including the tamper for clearing up in sewer carry out in sewer for controlling cleaning mechanism The motion bar of the movement of any direction and for driving motion bar to carry out mobile driving mechanism, the descaling machine in sewer Structure includes the dredger for clearing up the tamper to result in blockage to sewer, and the dredger includes multiple for dredging The dredging bar and twist rod of tamper in sewer, the twist rod are equipped with limit plate, and the limit plate is equipped with and is used for The liquid storage mechanism of the dredging agent of storage auxiliary dredging sewer；By the setting of above-mentioned liquid storage mechanism, can effectively realize pair The fixation of dredging agent and automatically to the release of dredging agent, allows dredging agent when the device acts on cleaning tamper, and stifled Plug thing reaction, greatly improves the dredging efficiency to tamper.

Further, the liquid storage mechanism includes reservoir for storing dredging agent and for reservoir to be fixed on limit First clamping member and the second clamping piece on the plate of position；It is set by the cooperation of above-mentioned reservoir, first clamping member and the second clamping piece It sets, can effectively realize the fixation to reservoir, reservoir clears up tamper in sewer, improve The efficiency of cleaning.

Further, described first clamping member and the second clamping piece are flexibly connected, described first clamping member and the second clamping It is equipped with locked component before part, is additionally provided with telescopic component in described first clamping member；By the setting of above structure, may be implemented To the locking effect of first clamping member and the second clamping piece volume, to avoid loosening for first clamping member and the second clamping piece, improve The locking intensity of first clamping member and the second clamping piece, and the setting of telescopic component, can assist first clamping member from second It is detached from clamping piece, improves the separative efficiency of first clamping member and the second clamping piece.

Further, the locked component includes the loose slot for being respectively arranged on the top and bottom of first clamping member, is used for The fixture block that first clamping member and the second clamping piece are locked and the helical spring between fixture block and loose slot；By above-mentioned Setting for locked component can effectively lock first clamping member and the second clamping piece, so that first clamping member It can be firmly fixed on movable plate with the second clamping piece, while reservoir can also be dismantled, in order to be carried out to reservoir Replacement, improves the utilization rate of the device.

Further, the telescopic component includes set on the fixed cylinder of first clamping member end, for assisting the first clamping The telescopic rod that part is detached from from the second clamping piece and the adjustable spring between telescopic rod and fixed cylinder；Pass through above structure Setting, can act on one reversed power to first clamping member effectively when first clamping member is detached from from the second clamping piece, In order to push first clamping member to be detached from from the second clamping piece, the disengaging efficiency of first clamping member is improved.

Further, the driving mechanism include carry out for controlling motion bar in sewer mobile control device, It fixation device for being fixed on driving mechanism at sewer nozzle and is used for drive control device controls motion bar and is being lauched The actuator moved in road；By the setting of above-mentioned control device, allow driving of the cleaning mechanism by actuator, realizes To the cleaning effect of tamper, the cleaning effect to tamper, the setting of fixed device, so that actuator can are effectively raised To be fixed at drain pipe, cleaning to tamper is realized, avoid manually-operated trouble, and control device is set It sets, so that motion bar may not need manual operation and can realize dredging to sewer, greatly improves to sewer Cleaning efficiency.

Further, the control device includes the activity for driving motion bar to be moved forward and backward in sewer Cylinder, the fixed column for driving movable cylinder to be rotated and the rotation for avoiding motion bar from rotating with the rotation of movable cylinder Bearing, the fixed column are equipped with the first positive stop strip for avoiding movable cylinder from rotating, and the activity cylinder is equipped with and the The first limiting slot that one positive stop strip matches；By being equipped with for above-mentioned movable cylinder and fixed column, fixed column is led to It overdrives the driving of part, realizes the driving to movable cylinder, movable cylinder is allowed to pass through the first positive stop strip and the second limiting slot Setting, realizes the effect of back-and-forth motion, and the effect being moved forward and backward in order to drive motion bar to realize allows motion bar to stifled Plug thing is effectively cleared up, and the setting of rolling bearing, so that the rotation of movable cylinder, not will drive motion bar and rotates together, Effectively raise the stability of device operating.

The utility model has the advantage that this passes through above-mentioned liquid storage mechanism convenient for fixed Domestic sewer dredger Setting can realize that the reservoir to storage dredging agent is fixed, effectively in order to pass through dredging when pushing tamper Hangnail on bar is realized to the effect of release tamper, effectively raises the cleaning efficiency to tamper.

Detailed description of the invention

Fig. 1 is the three-dimensional structure diagram of the utility model.

Fig. 2 is the schematic enlarged-scale view at the A in Fig. 1.

Fig. 3 is the schematic enlarged-scale view at the B in Fig. 1.

Fig. 4 is the structural blast schematic diagram of the cleaning mechanism in Fig. 1.

Fig. 5 is the three-dimensional structure diagram of the driving mechanism in Fig. 1.

Fig. 6 is the three-dimensional cutaway view one of Fig. 5.

Fig. 7 is the schematic enlarged-scale view at the C in Fig. 6.

Fig. 8 is the schematic enlarged-scale view at the D in Fig. 6.

Fig. 9 is the three-dimensional cutaway view two of Fig. 5.

Figure 10 is the schematic enlarged-scale view at the E in Fig. 9.

Figure 11 is the three-dimensional structure diagram of the liquid storage mechanism in the utility model.

Figure 12 is the three-dimensional cutaway view one in Figure 11.

Figure 13 is the schematic enlarged-scale view at the F in Figure 12.

Figure 14 is the three-dimensional cutaway view two in Figure 11.

Figure 15 is the schematic enlarged-scale view at the G in Figure 14.

Specific embodiment

In order to make those skilled in the art better understand the utility model, below in conjunction with the utility model reality The attached drawing in example is applied, the technical solutions in the embodiments of the present invention are clearly and completely described, it is clear that described Embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered When the range for belonging to the utility model protection.

As shown in figures 1-15, a kind of convenient for fixed Domestic sewer dredger, including for controlling device opening and closing Control switch 1 and for support control switch 1 to the device opening and closing control fixed frame 2, further include for clearing up sewer In tamper cleaning mechanism, carry out for controlling cleaning mechanism in sewer any direction movement motion bar 3 and For driving motion bar 3 to carry out mobile driving mechanism in sewer, by the setting of above-mentioned cleaning mechanism, so that sewer In the available effective cleaning of tamper, so as to dredge sewer pipe, in order to people's daily life, and motion bar Setting, dredged in order to which wiper mechanism protrudes into V-type sewer pipe, improve the scope of application of the device, driving machine The setting of structure is not necessarily to manual drive so that the cleaning for tamper, and it is arduously time-consuming to avoid manual drive, provides under The cleaning efficiency of waterpipe；Above-mentioned control switch is electrically connected by electric wire and actuator, for controlling the opening and closing of actuator, with Convenient for dredging automatically to sewer, above-mentioned motion bar is made of the connection of multiple universal joints, is the prior art, herein no longer It repeats, in order to adapt to the pipeline track in v-shaped tube road.

The cleaning mechanism includes for clearing up on sewer inner wall the brush board 41 of the remaining dirt adhered to, for cleaning pair It the dredger for the tamper that sewer results in blockage and is moved forward and backward for controlling dredger when clearing up sewer Twist rod 42, by the setting of above-mentioned brush board, can effectively realize remaining dirt on sewer pipe inner wall is carried out it is clear The effect of reason, strengthens the cleaning effect to sewer pipe inner wall, and the setting of dredger and twist rod, so that twist rod can To drive dredger to move forward, cleared up in order to carry out effective push to tamper, to improve to the clear of tamper Manage efficiency；Above-mentioned brush board is arranged using common hairbrush, is the prior art, and details are not described herein again, and above-mentioned twist rod is existing market Upper existing product, is not repeating herein for the prior art.

The driving mechanism includes carrying out mobile control device, for that will drive for controlling motion bar 3 in sewer Motivation structure is fixed on the fixation device at sewer nozzle and moves in sewer for drive control device controls motion bar 3 Actuator 51 driving of the cleaning mechanism by actuator is allowed by the setting of above-mentioned control device, realize to blocking The cleaning effect of object, effectively raises the cleaning effect to tamper, and the setting of fixed device fixes actuator At drain pipe, cleaning to tamper is realized, avoid manually-operated trouble, and the setting of control device, so that Motion bar, which may not need manual operation, can realize dredging to sewer, greatly improve the cleaning effect to sewer Rate；Above-mentioned actuator is arranged using common motor, is the prior art, details are not described herein again.

The dredger includes the dredging bar 43 of multiple tampers being used in dredging sewer, for supporting dredging bar The movable plate 44 and be used for free-moving on twist rod 42 for movable plate 44 that tamper in 43 pairs of sewers is dredged Loose slot 441；When the twist rod 42 moves forward, the dredging bar 43 pushes tamper, 44 back rotation of movable plate It is mobile, by the setting of above-mentioned dredging bar, so that motion bar is directly inserted into tamper when mobile towards tamper, And pass through the cooperative movement of twist rod and loose slot, it realizes to the rotational agitation of tamper, greatly strengthens to tamper Cleaning effect allows the device more easily laborsaving for the cleaning of tamper, and in order to remaining in sewer Hair cleared up, increase cleanup area, improve practicability；When movable plate stress is pushed, movable plate passes through activity The cooperation of slot and twist rod, towards the direction moving in rotation of motion bar, so that it is revolving to drive dredging bar to carry out tamper Agitation.

The control device includes movable cylinder 52 for driving motion bar 3 to be moved forward and backward in sewer, is used for The fixed column 53 that driving activity cylinder 52 is rotated and the rotation for avoiding motion bar 3 from rotating with the rotation of movable cylinder 52 Bearing 54, the fixed column 53 are equipped with the first positive stop strip 531 for avoiding movable cylinder 52 from rotating, the activity cylinder 52 It is equipped with the first limiting slot 521 for matching with the first positive stop strip 531, by being equipped with for above-mentioned movable cylinder and fixed column, Allow driving of the fixed column by actuator, realize the driving to movable cylinder, movable cylinder is allowed to pass through the first limit The effect of back-and-forth motion is realized in the setting of item and the second limiting slot, and the effect being moved forward and backward in order to drive motion bar to realize makes Tamper can effectively be cleared up by obtaining motion bar, and the setting of rolling bearing, so that the rotation of movable cylinder, not will drive Motion bar rotates together, and effectively raises the stability of device operating；Fixed column is fixedly connected with the output shaft of actuator, When actuator rotation, actuator drives fixed column to be rotated, and fixed column is flexibly connected with movable cylinder, movable cylinder and set casing Body engagement connection when fixed column rotates, can drive movable cylinder to be moved forward and backward on fixed shell, to realize motion bar It is moved forward and backward.

The fixed device include for Connection Bracket 2 by the securing fixed shell 55 of actuator 51, be used for should Device is fixed on fixation kit at sewer pipe road junction and for driving fixation kit to be supported fixation to fixed shell 55 Driving assembly fixed shell is passed through and is adjusted, is realized by being equipped with for above-mentioned fixation kit and driving assembly The effect being fixed at sewer nozzle improves in order to which the device effectively dredges sewer to sewer Efficiency is dredged, avoids device when unclog the pipe from deflecting or be displaced, influences the dredging of sewer, sewer is improved and dredges Logical structural stability；Above-mentioned fixed frame is used to fix actuator, when actuator being avoided to drive motion bar, deflects, shadow The driving to motion bar is rung, the stability of structure is improved.

The fixation kit includes for will fix the support rod 61 and be used for that shell 55 is supported at sewer pipe road junction Driving support rod 61 is supported on the drive rod 62 at sewer pipe road junction, and the drive rod 62 is equipped with for avoiding drive rod 62 Second positive stop strip 621 of rotation, the fixed shell 55 are equipped with the second limiting slot 551 matched with the second positive stop strip 621, A telescopic chute 621 on the drive rod 62 and between support rod 61 be equipped with elastic component 63, the end of the support rod 61 is equipped with Non-slip mat 611 controls support rod by drive rod by the setting of above structure, in order to drive support Bar is supported fixed shell, allows and fixes movement of the shell by support rod, is stably fixed to sewer nozzle, Improve the support effect of support rod, and the setting of non-slip mat, support rod can be reinforced to the support strength of sewer mouth, very It is practical, the setting of the second positive stop strip and the second limiting slot can shift to avoid drive rod, drive rod is passed through The driving of second driving member, realizes the effect of back-and-forth motion, in order to drive support rod to be moved, improves the structure of the device Stability；The driving component includes rotating cylinder 64 for driving 61 pairs of support rod fixed shells 55 to be supported, for driving Dynamic drive rod 62 carries out the first mobile driving member 65, carries out the second mobile driving member 66 for controlling drive rod 62 and be used for The support 67 of drive rod 62, the rotating cylinder 64 is supported to be flexibly connected with fixed shell 55, the drive rod 62 and second passes The engagement connection of moving part 66 allows driving of the support rod by rotating cylinder by the setting of above-mentioned driving assembly, realizes and shrinks Mobile effect, in order to reinforce support rod to the fixing intensity of fixed shell, and the setting of the second driving member, so that drive rod Telescopic moving may be implemented, in order to drive support rod to carry out telescopic moving, realize fixed effect, effectively raise to solid The fixed efficiency of fixed shell.

Above-mentioned elastic component is arranged using common adjustable spring, is the prior art, details are not described herein again, and above-mentioned non-slip mat is adopted It being made of rubber material, it is the prior art that the first driving member and the second driving member, which are all made of bevel gear setting, in the present embodiment, this Place repeats no more；But when needing to secure the device at sewer nozzle, rotating cylinder is rotated, rotating cylinder drives the first driving member Rotation, the first driving member rotation drive the second driving member rotation, drive rod by with the second driving member engage and second The movement towards the direction of rotating cylinder is realized in the restriction of positive stop strip, then fixed shell is put at sewer nozzle, opposite direction Rotating cylinder is rotated, so that rotating cylinder drives drive rod to move outwardly, until non-slip mat is supported bar and is extruded on sewer inner wall, Realize fixed effect.

The outer wall thread of the inner wall of above-mentioned rotating cylinder and movable cylinder cooperates, and above-mentioned actuator is in turn-off current, actuator Output shaft can arbitrarily rotate, when rotating rotating cylinder, rotating cylinder, which will drive, drives fixed column rotation by movable cylinder, and movable The end of bar is connect by rolling bearing with movable cylinder, and the rotation of fixed column drives output shaft rotation, and support rod is against and is lauched On the inner wall of road nozzle, the driving of the device will not influence, when actuator is initially powered up driving, the output shaft of actuator is rotated Direction and rotating cylinder driving support rod rotate when moving outwardly it is contrary, in this way, movable cylinder turns when actuator rotation The dynamic rotating cylinder that will drive drives support rod, so as to be against the power on sewer increasing for support rod, strengthens fixed force, and Movable cylinder can be moved gradually downward by the setting of screw thread and the first positive stop strip, realize driving to motion bar, when needing to receive When returning the device, so that the output shaft of actuator is rotated towards another direction, so that motion bar is mobile towards the direction of actuator, And can directly loosen support rod, so that support rod is separated with sewer inner wall, in order to take out the device.

The end of the dredging bar 43 is equipped with tapered protrusion 431, and the dredging bar 43 is lauched equipped with multiple for collecting The hangnail 432 of remaining hair in road, the twist rod 42 are equipped with the limit for avoiding movable plate 44 and twist rod 42 from being detached from Position plate 421, the side wall of the movable plate 44 are equipped with multiple auxiliary movable boards 44 that are used for and carry out mobile turn in sewer Dynamic ball 442, can when so that dredging bar dredging tamper in being inserted into tamper by the setting of above structure It is to hook up the hair in tamper, very simple and practical in order to clear up the hair in sewer, and ball is set It sets, for reducing the frictional force of movable plate when moving, improves the mobile efficiency of movable plate；When dredging bar forward movement, Dredging bar will drive tapered protrusion forward movement, is inserted into tamper, carries out certain rotational agitation, so that tamper loosens, After giving certain thrust, be re-filled with a certain amount of water, tamper can be cleaned, and hangnail can withdraw motion bar when It waits, the impurity such as hair is hooked up out, improve the cleaning effect of tamper.

The limit plate 421 is equipped with the liquid storage mechanism of the dredging agent for storing auxiliary dredging sewer, by above-mentioned The setting of liquid storage mechanism, can effectively realize fixation to dredging agent and automatically to the release of dredging agent, so that dredging agent can To be reacted with tamper, greatly improve the dredging efficiency to tamper when the device acts on cleaning tamper；The storage Liquid mechanism includes the reservoir 71 for storing dredging agent and the first clamping for being fixed on reservoir 71 on limit plate 421 Part 72 and the second clamping piece 73 can be effective by being equipped with for above-mentioned reservoir, first clamping member and the second clamping piece It realizes the fixation to reservoir, reservoir clears up tamper in sewer, improves the efficiency of cleaning, Above-mentioned reservoir is made of rubber material, and by the piercing of the hangnail on dredging bar, dredging agent will be flowed out from reservoir, To carry out dredging effect to tamper.

Described first clamping member 72 and the second clamping piece 73 are flexibly connected, described first clamping member 72 and the second clamping piece 73 It is equipped with locked component before, is additionally provided with telescopic component in described first clamping member 72, by the setting of above structure, may be implemented To the locking effect of first clamping member and the second clamping piece volume, to avoid loosening for first clamping member and the second clamping piece, improve The locking intensity of first clamping member and the second clamping piece, and the setting of telescopic component, can assist first clamping member from second It is detached from clamping piece, improves the separative efficiency of first clamping member and the second clamping piece；First clamping member and the second clamping piece Inner wall is equipped with the embedded groove that matches with limit plate, to realize fixed effect on limit plate, first clamping member and the Two clamping pieces separate and close up realization and limit plate fix and isolated effect.

The locked component includes the loose slot 721 for being respectively arranged on the top and bottom of first clamping member 72, for by the The fixture block 722 and the helical spring between fixture block and loose slot 721 that one clamping piece 72 and the second clamping piece 73 lock 723, by the above-mentioned setting for locked component, effectively first clamping member and the second clamping piece can be locked, made Obtaining first clamping member and the second clamping piece can firmly be fixed on movable plate, while can also dismantle reservoir, in order to Reservoir is replaced, the utilization rate of the device is improved；The telescopic component includes being set to 72 end of first clamping member Fixed cylinder 724, the telescopic rod 725 for assisting first clamping member 72 to be detached from from the second clamping piece 73 and be set to telescopic rod 725 Adjustable spring 726 between fixed cylinder 724 can be effectively in first clamping member from second by the setting of above structure When being detached from clamping piece, one reversed power is acted on to first clamping member, in order to push first clamping member from the second clamping piece Upper disengaging improves the disengaging efficiency of first clamping member.

When needing for reservoir to be fixed on limit plate, first clamping member and the second clamping piece are fixed on limit plate On, fixture block can be directly caught in the card hole on the second clamping piece by the contraction of helical spring, be clamped with realizing to first Fixation between part and the second clamping piece, at this point, telescopic rod is squeezed, adjustable spring is shunk, and is clamped when needing to separate first When part and the second clamping piece, fixture block is squeezed, fixture block is shunk at this time, and the bounce of adjustable spring will drive first clamping member and leave Second clamping piece separates first clamping member and the second clamping piece to realize so that first clamping member flicks, in order to Reservoir is taken off from limit plate and is replaced.

When first clamping member is fixed on the second clamping piece, reservoir is extend at tamper, dredge is pushed, makes Movable plate is obtained to move backward, the hangnail dredged on bar can be just pierced into reservoir, so that the dredging agent in reservoir flows out, To act on tamper, the cleaning efficiency to tamper is improved.

Claims (7)

1. a kind of convenient for fixed Domestic sewer dredger, cleaning mechanism including the tamper for clearing up in sewer, The motion bar (3) of the movement of any direction is carried out for controlling cleaning mechanism in sewer and for driving motion bar (3) to exist Mobile driving mechanism is carried out in sewer, the cleaning mechanism includes for clearing up the tamper to result in blockage to sewer Dredger；It is characterized by: the dredger includes multiple dredging bars (43) for the tamper in dredging sewer With twist rod (42), the twist rod (42) is equipped with limit plate (421), and the limit plate (421) is equipped with auxiliary for storing Help the liquid storage mechanism of the dredging agent of dredging sewer.

2. according to claim 1 convenient for fixed Domestic sewer dredger, it is characterised in that: the liquid storage mechanism packet Include the reservoir (71) for storing dredging agent and first clamping member for being fixed on reservoir (71) on limit plate (421) (72) and the second clamping piece (73).

3. according to claim 2 convenient for fixed Domestic sewer dredger, it is characterised in that: described first clamping member (72) it is flexibly connected with the second clamping piece (73), locking group is equipped with before the first clamping member (72) and the second clamping piece (73) Part is additionally provided with telescopic component on the first clamping member (72).

4. according to claim 3 convenient for fixed Domestic sewer dredger, it is characterised in that: the locked component packet It includes and is respectively arranged on the loose slot (721) of the top and bottom of first clamping member (72), is used for first clamping member (72) and second The fixture block (722) that clamping piece (73) locks and the helical spring (723) being set between fixture block and loose slot (721).

5. according to claim 3 convenient for fixed Domestic sewer dredger, it is characterised in that: the telescopic component packet Include the fixed cylinder (724) set on first clamping member (72) end, for assisting first clamping member (72) from the second clamping piece (73) The telescopic rod (725) of middle disengaging and the adjustable spring (726) being set between telescopic rod (725) and fixed cylinder (724).

6. according to claim 1 convenient for fixed Domestic sewer dredger, it is characterised in that: the driving mechanism packet It includes and carries out mobile control device in sewer, for driving mechanism to be fixed on sewer pipe for controlling motion bar (3) The fixation device at mouthful place and it is used for drive control device controls motion bar (3) actuator (51) for moving in sewer.

7. according to claim 6 convenient for fixed Domestic sewer dredger, it is characterised in that: the control device packet Include the movable cylinder (52) for driving motion bar (3) to be moved forward and backward in sewer, for driving movable cylinder (52) to carry out The fixed column (53) of rotation and rolling bearing (54) for avoiding motion bar (3) from rotating with the rotation of movable cylinder (52), The fixed column (53) is equipped with the first positive stop strip (531) for avoiding movable cylinder (52) from rotating, the activity cylinder (52) it is equipped with the first limiting slot (521) matched with the first positive stop strip (531).