CN111546169A

CN111546169A - Quick location grinding device of energy-conserving building stair

Info

Publication number: CN111546169A
Application number: CN202010427088.0A
Authority: CN
Inventors: 党云飞
Original assignee: 党云飞
Current assignee: Jiaxing Dingshan Information Technology Co.,Ltd.
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-08-18
Anticipated expiration: 2040-05-19
Also published as: CN111546169B

Abstract

The invention discloses a quick positioning and polishing device for an energy-saving building stair, relates to the technical field of polishing and fixing devices, and solves the problems that a stainless steel pipe is easy to shrink when a bench vice is used for fixing during polishing of an existing stair railing steel pipe, and the fixed stainless steel pipe cannot rotate to polish different parts. A quick positioning and polishing device for an energy-saving building stair comprises a stay bar mechanism; the supporting rod mechanism is composed of a supporting rod, a power rod and an adjusting block. The device struts the nonrust steel pipe for the inside that stretches into nonrust steel pipe through vaulting pole mechanism to the fixed mode of nonrust steel pipe, thereby has avoided traditional bench vice to cause the crowded flat phenomenon of influence use of nonrust steel pipe to take place of nonrust steel pipe from outside centre gripping nonrust steel pipe, can rotate the nonrust steel pipe that will fix after pressing the dwang at the in-process of polishing, and the convenience is polished to the quick location of nonrust steel pipe for the nonrust steel pipe is polished the back and is produced the rate higher.

Description

Quick location grinding device of energy-conserving building stair

Technical Field

The invention belongs to the technical field of polishing fixing devices, and particularly relates to a quick positioning polishing device for an energy-saving building stair.

Background

Stairways are components of buildings that are used for vertical traffic between floors. The stair is composed of continuous stair sections, platforms, enclosing members and the like, the handrails are arranged on the empty sides of the stair sections and the platforms, have certain strength and rigidity, and are provided with handrails for being held by hands.

At present, the stainless steel stair handrail is very fashionable and fashionable, has the advantages of being bright and dazzling, good in hand feeling, modern in feeling, good in cleaning and the like, is widely applied to building stairs, is generally made of hollow pipes in a welded mode, and is required to be polished and deburred after being fixed during manufacturing, so that the stainless steel pipe is bright and clean and cannot be pricked.

If the application number is: CN 201921286221.4's patent discloses a grinding device is used in stair railing processing, including casing and motor, the motor is installed in the inside wall of casing, the driving gear is installed through the cooperation of round pin key to the output of motor, the backup pad is installed to the inner wall symmetry of casing, and is two sets of be equipped with the pivot through the bearing rotating turret between the backup pad respectively and the lateral wall of casing, and is two sets of driven gear is installed through the cooperation of round pin key respectively in the outside of pivot, the driving gear meshes with two sets of driven gear respectively, and is two sets of the drive shaft is all installed to driven gear's lateral part, and is two sets of the connecting block is all welded to the distolateral side of drive shaft, and is two sets of the drill chuck is all installed to the lateral part of connecting block, and is two sets of the. The utility model discloses simple realization is to two sets of breach effectual polishing, increases the protection to the drive position and the sheltering from of the disintegrating slag down of polishing.

The present adopts the bench vice to fix when polishing stair railing steel pipe more, because the pipe wall of nonrust steel pipe is thinner, careless easily with nonrust steel pipe crowded flat when using the bench vice to fix slightly, it is pleasing to the eye to influence, the yield of polishing has been reduced, and the bench vice can only be fixed to a position of nonrust steel pipe when fixed, nonrust steel pipe is crooked easily when polishing, cause the fish tail to the position of polishing easily, influence follow-up use, nonrust steel pipe can not rotate the position of polishing to the difference after the bench vice fixes the nonrust steel pipe, thereby lead to polishing the difficulty, the practicality is not high.

Therefore, in view of the above, research and improvement are performed on the existing structure and defects, and a quick positioning and polishing device for an energy-saving building stair is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides a quick positioning and polishing device for an energy-saving building stair, which aims to solve the problems that a bench vice is mostly adopted for fixing when an existing stair railing steel pipe is polished, the stainless steel pipe is easy to shrink when the bench vice is used for fixing due to the thin pipe wall of the stainless steel pipe, the appearance is affected, the polishing yield is reduced, the bench vice can only fix one part of the stainless steel pipe when being fixed, the stainless steel pipe is easy to incline when being polished, scratches on the polished part are easy to cause, the follow-up use is affected, the stainless steel pipe cannot rotate to polish different parts after the bench vice fixes the stainless steel pipe, and therefore the polishing is difficult, and the practicability is low.

The invention relates to a quick positioning and grinding device for an energy-saving building stair, which is achieved by the following specific technical means:

a quick positioning and polishing device for an energy-saving building stair comprises a base, a movable seat, a fixed rod and a support rod mechanism; the top surface of one side of the top of the base is fixedly connected with a fixed seat; the movable seat is movably connected to the top surface of the other side of the base; the fixed rod is respectively inserted in the rotating rod and the follower rod; the rotating rod is inserted in the fixed seat; the follower rod is inserted in the movable seat; the support rod mechanism consists of a support rod, a power rod and an adjusting block; the supporting rod is movably connected to one end of the rotating rod and one end of the follow-up rod; the adjusting block is movably connected to one end of the fixing rod.

Furthermore, the stay bar mechanism is respectively provided with a set of in the inside of dwang and follower rod, the body of rod one end of dead lever is equipped with the screw thread, the inside of regulating block is equipped with the screw hole, and the dead lever connects in the inside of regulating block screw hole through the screw thread of the one end body of rod is twisted.

Furthermore, one end swing joint of power rod is in the middle part of bracing piece, and the other end swing joint of power rod is in the inside of regulating block, the one end of bracing piece is equipped with the supporting shoe, and the supporting shoe rotates the tip of connecting at the bracing piece, the supporting shoe has the rubber material to make.

Further, the body of rod one end of dwang is equipped with positioning gear, the inside of fixing base is equipped with the jack socket and dodges the groove, and dodges the inboard that the trench is located the jack socket, positioning gear joint is in the inside of jack socket, the outside of fixing base is equipped with the top spring, and the top spring cup joints the body of rod one end at the dead lever, the both ends of top spring fixed connection is the lateral surface of the inboard and fixing base of adjustment disk of dwang one end respectively.

Further, the one end of dead lever is equipped with the carousel, and the inside of carousel is equipped with the track piece, the one end of dwang and follower rod is equipped with the track dish, and the inside of track dish is equipped with the track groove.

Furthermore, the bottom of the moving seat is provided with a sliding block, the cross section of the sliding block is in a T shape, the top surface of the base, which is positioned on one side of the moving seat, is provided with a sliding groove, the sliding block is inserted into the sliding groove, and the height and the position of a follower rod in the moving seat are the same as those of a rotating rod in the fixing seat.

Furthermore, the rod body of the follower rod that is located track dish one end is equipped with the locking pole, and the external diameter of track dish is greater than the external diameter of carousel.

Further, the inboard body of rod that the dwang is located the fixing base and the inboard body of rod that the follower rod is located the removal seat all are equipped with and keep off the ring, the track dish of follower rod is the same with the width that removes the seat with the interval that keeps off the ring, and the track dish of dwang is greater than the width of fixing base with the interval that keeps off the ring.

Compared with the prior art, the invention has the following beneficial effects:

the device can be fixed the both ends of nonrust steel pipe, fixed nonrust steel pipe that can be stable, the crooked phenomenon of nonrust steel pipe can not appear taking place at the in-process of polishing, thereby the device struts nonrust steel pipe's fixed mode for stretching into the inside of nonrust steel pipe through vaulting pole mechanism, thereby it fixes nonrust steel pipe to have avoided traditional bench vice to cause the phenomenon emergence of the crowded flat influence use of nonrust steel pipe from outside centre gripping nonrust steel pipe, can rotate the nonrust steel pipe that will fix after can pressing the dwang at the in-process of polishing, the convenience is polished the quick location of nonrust steel pipe, make nonrust steel pipe polish the back finished product rate higher, the device's practicality has been improved.

At first, the regulating block of vaulting pole mechanism can be under the rotation of dead lever, the screw thread through the dead lever body of rod drives the regulating block and removes, thereby the power pole can prop up the bracing piece, the supporting shoe through the bracing piece supports the inner wall of nonrust steel pipe, the phenomenon of traditional bench vice from outside centre gripping nonrust steel pipe causes the crowded flat influence of nonrust steel pipe to use takes place, and the power pole transmission is at the middle part of bracing piece, make the home range of the support end of bracing piece bigger, it is faster to adjust, thereby can adapt to support fixedly to the nonrust steel pipe of different internal diameters, the device's stability and adaptability have been improved.

Secondly, when pressing the dwang, the positioning gear and the latch groove of dwang lose the joint relation, the dwang can rotate this moment, rotate the track dish and can make by the nonrust steel pipe rotation that the device is fixed, adjust the effect that the back dwang can reset under the spring of top, positioning gear again with latch groove joint, the dwang can not rotate again this moment to location nonrust steel pipe that can be quick needs the surface of polishing, and is easy and simple to handle, convenient and fast has improved the device's flexibility.

Moreover, the bottom of removing the seat is equipped with the slider for remove the seat and can remove inside the spout of base, thereby make the device can adapt to fix the nonrust steel pipe of different length, can fix the both ends of nonrust steel pipe with the inside vaulting pole mechanism's of fixing base cooperation, fixed nonrust steel pipe that can be stable, the crooked phenomenon of nonrust steel pipe can not appear at the in-process of polishing takes place, has improved the device's stability and adaptability.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic view of the internal structure of the left side of the stainless steel tube clamped and fixed in accordance with the present invention.

FIG. 3 is a schematic view of the internal structure of the right side of the stainless steel tube after being clamped and fixed.

Fig. 4 is a schematic structural view of the left side of the present invention after disassembly.

Fig. 5 is a schematic structural view of the right side of the disassembled product of the present invention.

Fig. 6 is an enlarged schematic structural view of a portion a in fig. 2 according to the present invention.

Fig. 7 is an enlarged structural view of the portion B in fig. 4 according to the present invention.

Fig. 8 is an enlarged schematic structural view of the C-site in fig. 4 according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a base; 2. a fixed seat; 3. a movable seat; 4. fixing the rod; 5. rotating the rod; 6. a follower rod; 7. a strut mechanism; 101. a chute; 201. a tooth clamping groove; 202. an avoidance groove; 203. a spring is supported; 301. a slider; 401. a turntable; 4011. a track block; 501. positioning a gear; 502. a track disk; 503. a baffle ring; 5021. a track groove; 601. a lock lever; 701. a support bar; 702. a power rod; 703. an adjusting block; 7031. a threaded hole; 7011. and (7) a supporting block.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 8:

the invention provides a quick positioning and polishing device for an energy-saving building stair, which comprises a base 1, a movable seat 3, a fixed rod 4 and a support rod mechanism 7, wherein the movable seat is fixedly connected with the base; the top surface of one side of the top of the base 1 is fixedly connected with a fixed seat 2; the movable seat 3 is movably connected with the top surface of the other side of the base 1; the fixed rod 4 is respectively inserted in the rotating rod 5 and the follower rod 6; one end of the fixed rod 4 is provided with a turntable 401, a track block 4011 is arranged inside the turntable 401, one ends of the rotating rod 5 and the follower rod 6 are provided with a track disc 502, and a track groove 5021 is arranged inside the track disc 502, as shown in fig. 2, fig. 4 and fig. 7, the design enables the fixed rod 4 to rotate inside the rotating rod 5 and the follower rod 6, and the opening and closing of the strut mechanism 7 are controlled through the threads of the rod body, one end of the strut mechanism 7 is connected to one ends of the rotating rod 5 and the follower rod 6, the rotating rod 5 and the follower rod 6 can play a role in positioning the strut mechanism 7, so that the strut mechanism 7 cannot rotate along with the fixed rod 4, the stainless steel pipe can be stably supported for polishing, and the stability of the device is improved; the rotating rod 5 is inserted in the fixed seat 2; the follower rod 6 is inserted in the movable seat 3; the rod body of the follower rod 6 at one end of the track disc 502 is provided with a locking rod 601, and the outer diameter of the track disc 502 is larger than that of the turntable 401, as shown in fig. 2 and fig. 4, the design enables the position of the follower rod 6 to be fixed through the locking rod 601, so that the follower rod 6 cannot rotate along with the fixed rod 4 when the fixed rod 4 inside the follower rod 6 is rotated; the supporting rod mechanism 7 consists of a supporting rod 701, a power rod 702 and an adjusting block 703; the support rod 701 is movably connected with one end of the rotating rod 5 and one end of the follower rod 6; one end of the power rod 702 is movably connected to the middle of the support rod 701, the other end of the power rod 702 is movably connected to the inside of the adjusting block 703, one end of the support rod 701 is provided with a support block 7011, the support block 7011 is rotatably connected to the end of the support rod 701, and the support block 7011 is made of rubber materials; the adjusting block 703 is movably connected to one end of the fixing rod 4.

Wherein, vaulting pole mechanism 7 respectively is equipped with a set ofly in the inside of dwang 5 and follower rod 6, the body of rod one end of dead lever 4 is equipped with the screw thread, the inside of regulating block 703 is equipped with screw hole 7031, and the screw thread of dead lever 4 through the body of rod of one end is twisted and is connect in the inside of regulating block 703 screw hole 7031, as fig. 2, fig. 4 and fig. 8 show, this design makes the screw thread through the 4 bodies of rod of dead lever drive regulating block 703 and removes, thereby power pole 702 can prop up bracing piece 701, the inner wall to stainless steel pipe is supported through bracing piece 7011 of bracing piece 701, the phenomenon of having avoided traditional bench vice to cause stainless steel pipe to crowd flat influence the use from outside centre gripping stainless steel pipe takes place, the practicality and the adaptability.

Wherein, one end of the rod body of the rotating rod 5 is provided with a positioning gear 501, the inside of the fixing base 2 is provided with a clamping tooth groove 201 and an avoiding groove 202, the avoiding groove 202 is positioned at the inner side of the clamping tooth groove 201, the positioning gear 501 is clamped inside the clamping tooth groove 201, the outside of the fixing base 2 is provided with a top spring 203, the top spring 203 is sleeved at one end of the rod body of the fixing rod 4, two ends of the top spring 203 are respectively and fixedly connected at the inner side of the adjusting disk at one end of the rotating rod 5 and the outer side surface of the fixing base 2, as shown in figure 2, figure 4 and figure 7, the design ensures that when the rotating rod 5 is pressed, the positioning gear 501 of the rotating rod 5 and the clamping tooth groove 201 lose the clamping relation, the rotating rod 5 can rotate at the moment, the rotating track disk 502 can rotate the stainless steel pipe fixed by the device, the rotating rod 5 can reset under the action of the top spring 203, thereby can be quick fix a position nonrust steel pipe and need polish the surface, easy and simple to handle, convenient and fast has improved the device's flexibility.

Wherein, the bottom of removing seat 3 is equipped with slider 301, and the cross sectional shape of slider 301 is "T" shape, the top surface that base 1 is located to remove seat 3 one side is equipped with spout 101, slider 301 pegs graft in the inside of spout 101, and the height and the position of the inside follower rod 6 of removal seat 3 are the same with the height and the position of the inside dwang 5 of fixing base 2, as shown in figure 4 and figure 5, this design makes removal seat 3 can remove inside spout 101 of base 1, thereby make the device can adapt to fix the stainless steel pipe of different length, can fix the both ends of stainless steel pipe with the cooperation of the inside vaulting pole mechanism 7 of fixing base 2, can stable fixed stainless steel pipe, the crooked phenomenon of stainless steel pipe can not appear in the process of polishing taking place, the stability and the adaptability of the device have been improved.

Wherein, the inboard body of rod that dwang 5 is located fixing base 2 and the inboard body of rod that the follower rod 6 is located moving seat 3 all are equipped with and keep off ring 503, the track dish 502 of follower rod 6 is the same with the width that moves seat 3 with the interval that keeps off ring 503, and the track dish 502 of dwang 5 is greater than fixing base 2's width with the interval that keeps off ring 503, as shown in figure 2, figure 3, figure 4 and figure 7, this design makes dwang 5 and follower rod 6 can be stable rotate in fixing base 2 and the inside that moves seat 3, and can not deviate from fixing base 2 and the inside that moves seat 3, can be stable support the both ends of stainless steel pipe, the stability of the device is improved.

The specific use mode and function of the embodiment are as follows:

according to the invention, firstly, according to the length of the stainless steel tube used for the stair railing, one end of the stainless steel tube is sleeved into the stay bar mechanism 7 at one end of the fixed seat 2, then the position of the movable seat 3 is adjusted, the movable seat 3 can change the position in the chute 101 in the base 1 through the slide block 301, the stay bar mechanism 7 at one end of the movable seat 3 is sleeved into the other end of the stainless steel tube, so that the device can be suitable for fixing the stainless steel tubes with different lengths, the two ends of the stainless steel tube can be fixed under the matching action of the stay bar mechanism 7 in the fixed seat 2, the stainless steel tube can be stably fixed, the phenomenon that the stainless steel tube is inclined can not occur in the polishing process, the fixed rods 4 of the fixed seat 2 and the movable seat 3 are sequentially rotated, the threads of the rod body of the fixed rod 4 drive the adjusting block to move, so that the power rod 703 can support the support rod 701, when the fixed rod 4 of the movable seat 3 is rotated, the position of the follower rod 6 can be fixed through the locking rod 601, so that the follower rod 6 cannot rotate along with the fixed rod 4 when the fixed rod 4 in the follower rod 6 is rotated, the inner wall of the stainless steel pipe can be protected from being extruded and damaged by the 7011-bit rubber material of the supporting block, the phenomenon that the stainless steel pipe is shriveled and affects the use of the stainless steel pipe caused by clamping the stainless steel pipe from the outside by a traditional bench vice is avoided, the power rod 702 is transmitted in the middle of the supporting rod 701, the movable range of the supporting end of the supporting rod 701 is larger, the adjustment is quicker, the stainless steel pipes with different inner diameters can be suitably supported and fixed, the track block 4011 of the turntable 401 can rotate in the track groove 5021 of the track disc 502, so that the fixed rod 4 can rotate in the rotating rod 5 and the follower rod 6 to control the opening and closing, one end of the support rod mechanism 7 is connected with one end of the rotating rod 5 and one end of the follower rod 6, the rotating rod 5 and the follower rod 6 can play a role in positioning the support rod mechanism 7, so that the support rod mechanism 7 cannot rotate along with the fixing rod 4, the stainless steel pipe can be stably supported for polishing, the surface of the stainless steel pipe can be polished by a handheld polisher after the fixing is finished, when the stainless steel pipe needs to be rotated to replace the polished surface, when the rotating rod 5 is pressed, the positioning gear 501 of the rotating rod 5 is out of clamping connection with the clamping tooth groove 201, at the moment, the rotating rod 5 can rotate, the stainless steel pipe fixed by the device can be rotated by the rotating track disc 502, the rotating rod 5 can reset under the action of the top spring 203 after the adjustment is finished, the positioning gear 501 is clamped with the clamping tooth groove 201 again, at the rotating rod 5 cannot rotate any more at the, it is easy and simple to handle, convenient and fast, fender ring 503 can make dwang 5 and follower rod 6 stable rotate in fixing base 2 and the inside of removing seat 3, and can not deviate from fixing base 2 and the inside of removing seat 3, can be stable support the both ends of nonrust steel pipe, nonrust steel pipe is polished and is accomplished back accessible and is rotated dead lever 4 and remove the fixed to nonrust steel pipe both ends, take off the nonrust steel pipe that has polished, it can to continue all the other nonrust steel pipes of treating polishing to polish according to above-mentioned step.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides an energy-conserving building stair quick positioning grinding device which characterized in that: comprises a base (1), a movable seat (3), a fixed rod (4) and a support rod mechanism (7); the top surface of one side of the top of the base (1) is fixedly connected with a fixed seat (2); the movable seat (3) is movably connected to the top surface of the other side of the base (1); the fixed rod (4) is respectively inserted in the rotating rod (5) and the follower rod (6); the rotating rod (5) is inserted into the fixed seat (2); the follower rod (6) is inserted in the movable seat (3); the support rod mechanism (7) consists of a support rod (701), a power rod (702) and an adjusting block (703); the support rod (701) is movably connected to one ends of the rotating rod (5) and the follower rod (6); the adjusting block (703) is movably connected at one end of the fixing rod (4).

2. The energy-saving building stair rapid positioning grinding device as claimed in claim 1, wherein: vaulting pole mechanism (7) respectively are equipped with a set ofly in the inside of dwang (5) and follower rod (6), the body of rod one end of dead lever (4) is equipped with the screw thread, the inside of regulating block (703) is equipped with screw hole (7031), and dead lever (4) screw thread through the one end body of rod connects in the inside of regulating block (703) screw hole (7031).

3. The energy-saving building stair rapid positioning grinding device as claimed in claim 1, wherein: one end of the power rod (702) is movably connected to the middle of the support rod (701), the other end of the power rod (702) is movably connected to the inside of the adjusting block (703), a support block (7011) is arranged at one end of the support rod (701), the support block (7011) is rotatably connected to the end of the support rod (701), and the support block (7011) is made of rubber.

4. The energy-saving building stair rapid positioning grinding device as claimed in claim 1, wherein: the body of rod one end of dwang (5) is equipped with positioning gear (501), the inside of fixing base (2) is equipped with draw-in groove (201) and dodges groove (202), and dodges the inboard that groove (202) are located draw-in groove (201), positioning gear (501) joint is in the inside of draw-in groove (201), the outside of fixing base (2) is equipped with top spring (203), and top spring (203) cup joints the body of rod one end at dead lever (4), the both ends difference fixed connection of top spring (203) is the lateral surface of the adjusting disk inboard of dwang (5) one end and fixing base (2).

5. The energy-saving building stair rapid positioning grinding device as claimed in claim 1, wherein: the one end of dead lever (4) is equipped with carousel (401), and the inside of carousel (401) is equipped with track piece (4011), the one end of dwang (5) and follower rod (6) is equipped with track dish (502), and the inside of track dish (502) is equipped with track groove (5021).

6. The energy-saving building stair rapid positioning grinding device as claimed in claim 1, wherein: the bottom of removing seat (3) is equipped with slider (301), and the cross-sectional shape of slider (301) is "T" shape, the top surface that base (1) is located to remove seat (3) one side is equipped with spout (101), slider (301) are pegged graft in the inside of spout (101), and the height and the position of removing the inside follower rod (6) of seat (3) and the height and the position of the inside dwang (5) of fixing base (2) are the same.

7. The energy-saving building stair rapid positioning grinding device as claimed in claim 1, wherein: the rod body of the follower rod (6) that is located track dish (502) one end is equipped with locking pole (601), and the external diameter of track dish (502) is greater than the external diameter of carousel (401).

8. The energy-saving building stair rapid positioning grinding device as claimed in claim 1, wherein: the inboard body of rod that dwang (5) are located fixing base (2) and follower rod (6) are located the inboard body of rod that removes seat (3) and all are equipped with and keep off ring (503), the track dish (502) of follower rod (6) are the same with the width that removes seat (3) with the interval that keeps off ring (503), and the track dish (502) of dwang (5) are greater than the width of fixing base (2) with the interval that keeps off ring (503).