CN212745521U - Auxiliary mechanism for plugging pipeline - Google Patents

Abstract

The utility model relates to a pipeline construction field discloses an auxiliary mechanism of shutoff pipeline, it includes the dwang and is used for clearing up the clearance subassembly of burr in the pipeline, the one end of dwang stretches into in the pipeline, the clearance subassembly is including setting up the brush in the dwang outside, one side that the brush deviates from the dwang is inconsistent with the pipeline inner wall, one side that the brush deviates from the pipeline inner wall has set firmly the mounting panel, link to each other through the adjustment subassembly between mounting panel and the dwang, the one end that the pipeline was kept away from to the dwang is equipped with and is used for driving dwang pivoted motor, the one end coaxial coupling of pipeline is kept away from with the dwang to. This application is cleared up the burr on the pipeline inner wall through the brush for the pipeline inner wall becomes level and smooth, has reduced the gasbag when the shutoff pipeline, and the gasbag is punctured by the burr on the pipeline inner wall, and influences the sealed effect's of gasbag shutoff pipeline possibility.

Description

Auxiliary mechanism for plugging pipeline

Technical Field

The application relates to the field of pipeline construction, in particular to an auxiliary mechanism for plugging a pipeline.

Background

At present, after urban rainwater, water supply, sewage and other drainage pipelines are used for many years, scales can be formed in the pipelines, the pipelines can be narrowed or blocked, the water delivery flow of the pipelines is influenced, and the pipelines need to be dredged regularly to clean dirt in the pipelines. Before dredging the pipeline, the pipeline needs to be plugged by the air bag, and the air bag is injected with air so that the air bag is tightly attached to the inner wall of the pipeline and the pipe orifice of the pipeline is plugged.

Chinese patent with publication number CN207620061U discloses a blocking inflator convenient for dredging a pipeline, which comprises a dredging hose, a handle, an inflating device, an air pipe and an air bag, wherein the handle is arranged at the top end of the dredging hose, the air pipe is positioned in the dredging hose, the length of the air pipe is greater than that of the dredging hose, the dredging hose is extended out of the top end of the air pipe, the top end of the air pipe is connected with an air inlet valve, the upper part of the air pipe is provided with a stop valve, the inflating device is connected with the air inlet valve, and the bottom end of the air pipe is communicated with the air.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the gasbag is filled up until the in-process of plugging up the pipeline in the pipeline, and the gasbag is punctured by the burr in the pipeline easily for gas in the gasbag takes place to leak, and the gasbag can not closely laminate with the pipeline inner wall completely, influences the shutoff effect of gasbag to the pipeline.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the air bag is easily punctured by burrs on the inner wall of the pipeline. The application provides an complementary unit of shutoff pipeline.

The application provides an auxiliary mechanism of shutoff pipeline adopts following technical scheme:

the utility model provides an auxiliary mechanism of shutoff pipeline, includes the dwang and is used for clearing up the clearance subassembly of pipeline, the one end of dwang is used for stretching into in the pipeline, the axial lead of dwang coincides mutually with the axial lead of pipeline, the clearance subassembly includes the brush, the brush sets up the outside at the dwang, the brush deviates from one side and the inner wall of pipe of dwang inconsistent, the one side that the brush deviates from the inner wall of pipe has set firmly the mounting panel, be provided with the adjustment subassembly that is used for adjusting interval between mounting panel and the dwang, the one end that the pipeline was kept away from to the dwang is equipped with and is used for driving dwang pivoted motor, the one end coaxial coupling of pipeline is kept away from to.

Through adopting above-mentioned technical scheme, before putting into the pipeline with the gasbag and carrying out the shutoff to the pipeline, need clear up the burr on the pipeline inner wall, the operator at first stretches into the pipeline with the dwang in to through the interval between adjustment subassembly adjustment mounting panel and the dwang, make the brush contact with the inner wall of pipeline. At this moment, the motor work, the drive dwang rotates, and then makes the mounting panel rotate in step, and the mounting panel drives the brush and rotates along the inner wall of pipeline to make the brush clear up the burr on the pipeline inner wall, make the pipeline inner wall become level and smooth, reduced the gasbag at the shutoff pipeline in-process, the gasbag is punctured by the burr, and the sealed effect's of influence gasbag shutoff pipeline possibility.

Preferably, one side that the mounting panel deviates from the dwang is seted up flutedly, the recess runs through along length direction's both ends, the draw-in groove has been seted up along length direction on the inside wall of recess, the draw-in groove runs through along length direction's both ends, the draw-in groove is linked together with the recess, it has the installation piece to peg graft jointly in recess and the draw-in groove, one end and the installation piece of brush deviate from one side fixed connection of recess, the one end that the installation piece was kept away from to the brush extends the recess, threaded connection has the bolt on the mounting panel, the bolt wear to establish in the draw-in groove and with installation.

Through adopting above-mentioned technical scheme, when needs installation brush, the operator inserts the mounting plate in the draw-in groove for the brush is injectd on the mounting panel, then screws up the bolt, fixes the mounting plate in, thereby makes the brush installation fix on the mounting panel. When the hairbrush needs to be disassembled, an operator unscrews the bolt, and the mounting piece is drawn out from the clamping groove and the groove, so that the hairbrush is taken down from the mounting plate. The mounting plate and the mounting sheet are detachably connected, so that an operator can conveniently detach and replace the brush.

Preferably, be equipped with the blotter between installation piece and the recess inner wall, one side and the recess inner wall fixed connection that the blotter deviates from the installation piece, one side that the blotter deviates from the recess is inconsistent with the installation piece.

Through adopting above-mentioned technical scheme, the in-process that the burr on the pipe inner wall was cleared up at the brush, and pipe inner wall produces reaction force to the brush, and at this moment, the blotter provides the elastic buffer to reduce the brush and take place the possibility of damaging after receiving reaction force.

Preferably, the adjustment subassembly includes first screw rod, one side fixed connection that the one end and the mounting panel of first screw rod deviate from the brush, the dwang is worn to establish by the one end that the mounting panel was kept away from to first screw rod, just there is first nut in the equal threaded connection in both sides of dwang on the first screw rod.

Through adopting above-mentioned technical scheme, before clearing up the burr on the pipeline inner wall, the operator needs adjust the interval between brush and the dwang according to the internal diameter of pipeline. The operator first unscrews the first nut and then moves the first screw rod so that the first screw rod slides on the rotating rod and drives the mounting plate to move. Meanwhile, the mounting plate drives the hairbrush to move synchronously, so that the distance between the hairbrush and the rotating rod is adjusted until the distance between the hairbrush and the rotating rod is matched with the radius of the pipeline. Then, the operator tightens the first nut to fix the first screw rod on the rotating rod and to define the position of the mounting plate so that the position of the brush is fixed. Then, the operator extends the rotating rod into the pipe and brings the brush into contact with the inner wall of the pipe. Then, rotate through motor drive dwang for the brush follows the dwang and rotates along the inner wall circumference of pipeline, and clears up the burr in the pipeline through the frictional force that brush and pipeline inner wall produced. The setting of adjustment subassembly for the burr in the pipeline of different pipe diameters can be cleared up to the brush, has enlarged the application scope of brush.

Preferably, be equipped with compression spring between mounting panel and the dwang, compression spring's both ends respectively with mounting panel and dwang fixed connection.

Through adopting above-mentioned technical scheme, when the burr of brush on the pipeline inner wall cleared up, the pipeline inner wall can produce reaction force to the brush, and on the reaction force that the brush received transmitted the mounting panel, at this moment, compression spring took place elastic deformation, cushioned the reaction force that the mounting panel received to further reduced the brush and received reaction force and take place the possibility of damage.

Preferably, the outside cover of compression spring is equipped with the sealed sheath of ripple, the both ends of the sealed sheath of ripple respectively with mounting panel, dwang fixed connection.

Through adopting above-mentioned technical scheme, when compression spring takes place elastic deformation, the sealed sheath of ripple is also following and is taking place deformation. When the burr clearance is carried out to moist pipeline to needs, the sealed sheath of ripple can block moist steam in the pipeline in the outside, reduces steam and compression spring contact, and causes compression spring by the possibility of corrosion, and simultaneously, the sealed sheath of ripple also blocks the dirt in the pipeline in the outside, has reduced in the pipeline dirt and has attached to compression spring on, and influence compression spring elastic deformation's possibility, plays the guard action to compression spring.

Preferably, the dwang divide into continuous first branch pole and second branch pole, first branch pole divides the one end side of pole to set firmly the inserted block towards the second, the second divides the pole to divide the one end side of pole to set up the slot towards the first branch pole, the inserted block is pegged graft in the slot, the second is divided and is worn to be equipped with the second screw rod on the pole, just the inserted block is worn to establish by the second screw rod, divide the equal threaded connection in both sides of pole at the second on the second screw rod to have the second nut, the one end that the inserted block was kept away from to first branch pole and the output coaxial coupling of motor.

Through adopting above-mentioned technical scheme, before clearing up the pipeline burr, the operator inserts the slot with the inserted block at first in, then wears to establish the second with the second screw rod and divides the pole and wear to establish the inserted block, screws up the second nut afterwards, makes the second screw rod fix on the second divides the pole to make first branch pole divide the coaxial fixed continuous of pole with the second, the motor during operation can drive first branch pole and rotate, and then drives the second and divide the pole to rotate. After clearing up the burr in the pipeline, the operator unscrews the second nut to divide the pole to take off the second screw rod from the second, then extract the inserted block from the slot, make first branch pole and second divide the pole alternate segregation, make things convenient for the operator to part the arrangement to accomodate and carry.

Preferably, be equipped with the rubber pad between first nut and the dwang, the both sides of rubber pad respectively with first nut, dwang inconsistent.

Through adopting above-mentioned technical scheme, the frictional force between first nut and the dwang has been increased in the setting of rubber pad for conflict between first nut and the dwang inseparabler, thereby strengthened the stability of being connected between first screw rod and the dwang.

In summary, the present application includes at least one of the following beneficial technical effects:

1. this application is before gasbag shutoff pipeline, clears up the burr on the pipeline inner wall through the brush for the pipeline inner wall is leveled, is punctured the possibility by burr on the inner wall when having reduced gasbag shutoff pipeline, plays the effect of protection to the gasbag.

2. Compression spring's setting cushions the counter force that the brush received the pipe wall at the in-process of clearance pipeline burr, has reduced the brush and has taken place the possibility of damaging when receiving counter force.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment for showing the connection relationship among the rotating rod, the cleaning assembly, the adjusting assembly, the motor and the pipeline.

Fig. 2 is a schematic structural diagram of the embodiment for showing the connection relationship between the brush and the mounting plate and the rotating rod and the adjusting assembly.

Fig. 3 is an exploded view of the present embodiment for embodying the detachable connection relationship between the first sub-rod and the second sub-rod and embodying the compression spring and the bellows seal sheath.

Fig. 4 is an enlarged view of fig. 2 at a.

Description of reference numerals: 1. rotating the rod; 11. a first branch rod; 12. a second branch rod; 13. inserting a block; 14. a slot; 15. a second screw; 16. a second nut; 2. cleaning the assembly; 21. a brush; 22. mounting a plate; 221. a groove; 222. a card slot; 23. mounting a sheet; 24. a bolt; 25. a cushion pad; 3. a pipeline; 4. an adjustment assembly; 41. a first screw; 42. a first nut; 43. a rubber pad; 5. a motor; 6. a support frame; 61. a fixed seat; 7. a compression spring; 8. a corrugated sealing sheath.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Example (b):

the embodiment of the application discloses complementary unit of shutoff pipeline, refer to fig. 1 and 2, a complementary unit of shutoff pipeline, including dwang 1 and drive dwang 1 pivoted motor 5, dwang 1 divides into the first branch pole 11 and the second branch pole 12 that link to each other.

Referring to fig. 2 and 3, an insertion block 13 is integrally connected to one end side of the first branch rod 11 facing the second branch rod 12, the cross section of the insertion block 13 is rectangular, a slot 14 is formed in one end side of the second branch rod 12 facing the first branch rod 11, the slot 14 is matched with the insertion block 13 in shape, and the insertion block 13 is inserted into the slot 14. When installing first minute pole 11 and second branch pole 12, the operator wears to establish second branch pole 12 and wears to establish inserted block 13 through second screw rod 15, then the operator is two second nuts 16 in the equal threaded connection in both ends of second screw rod 15, and it is fixed to screw up two second nuts 16 afterwards, contradicts respectively in the both sides of second branch pole 12 until two second nuts 16 for inserted block 13 fixes in slot 14, thereby makes first branch pole 11 and second branch pole 12 fixed continuous.

Referring to fig. 1 and 2, a support frame 6 for placing the motor 5 is arranged at one end of the first branch rod 11 away from the second branch rod 12, a fixing seat 61 for supporting the first branch rod 11 is welded and fixed on the support frame 6, the fixing seat 61 is penetrated through at one end of the first branch rod 11 away from the second branch rod 12, and one end of the first branch rod 11 penetrating through the fixing seat 61 is coaxially connected with the output end of the motor 5.

Referring to fig. 1 and 2, one end of the second branch rod 12, which is far away from the first branch rod 11, is used for extending into the pipeline 3, the axis of the second branch rod 12 coincides with the axis of the pipeline 3, and a cleaning assembly 2 for cleaning the pipeline 3 is arranged outside the second branch rod 12. The cleaning assembly 2 comprises a brush 21, the brush 21 is located at the outer side of the second branch rod 12, the brush 21 is arranged along the length direction of the second branch rod 12, an installation plate 22 used for fixing the brush 21 is arranged between the brush 21 and the second branch rod 12, and the installation plate 22 is arranged along the length direction of the brush 21.

Referring to fig. 2 and 4, a groove 221 is formed in one side of the mounting plate 22 away from the second branch rod 12 along the length direction, two ends of the groove 221 penetrate through the groove along the length direction, a clamping groove 222 is formed in a groove wall of the groove 221 along the length direction, and the clamping groove 222 is communicated with the groove 221. Draw-in groove 222 and recess 221 are interior to peg graft jointly and are had installation piece 23, installation piece 23 sets up along the length direction of recess 221, be equipped with blotter 25 between installation piece 23 and the recess 221, one side that blotter 25 deviates from installation piece 23 is fixed with the bonding of recess 221 cell wall, one side that blotter 25 deviates from the recess 221 cell wall is inconsistent with installation piece 23, one side that installation piece 23 deviates from blotter 25 is fixed with the one side bonding of brush 21 orientation second branch pole 12, and the one end that installation piece 23 was kept away from to brush 21 extends recess 221.

Referring to fig. 2 and 4, when the brush 21 needs to be installed, an operator inserts the installation piece 23 into the slot 222, and then the bolt 24 is connected to one side of the installation piece 23 away from the second branch rod 12 through threads, and the bolt 24 penetrates through the slot 222 and is connected to the installation piece 23 through threads, so that the installation piece 23 is fixed in the installation plate 22, and the brush 21 is fixedly installed on the installation plate 22. When the brush 21 is damaged, the operator unscrews the bolts 24 and then withdraws the mounting piece 23 from the catching groove 222 and the recess 221, so that the brush 21 is detached from the mounting plate 22. The detachable connection mode is adopted between the mounting plate 22 and the brush 21, so that an operator can conveniently detach and replace the brush 21.

Referring to fig. 2 and 4, be equipped with between mounting panel 22 and the second minute pole 12 and be used for adjusting the adjusting part 4 that brush 21 and second divide the interval between the pole 12, adjusting part 4 includes first screw rod 41, first screw rod 41 is located the one side that mounting panel 22 deviates from brush 21, first screw rod 41 is along the radial setting of second minute pole 12, first screw rod 41 towards the one end and the mounting panel 22 welded fastening of mounting panel 22, second minute pole 12 is worn to establish by the one end that mounting panel 22 was kept away from to first screw rod 41, and the equal threaded connection in both sides of second minute pole 12 has first nut 42 on first screw rod 41. A rubber pad 43 is arranged between the first nut 42 and the second sub-rod 12, and one side of the rubber pad 43 departing from the first nut 42 is fixedly bonded with the outer side of the second sub-rod 12.

Referring to fig. 1 and 2, before blocking the pipeline 3 with the air bag, the operator needs to clean the burrs on the inner wall of the pipeline 3, first unscrew the first nut 42 according to the inner diameter of the pipeline 3, then move the first screw 41, make the first screw 41 slide on the second branch rod 12, and make the first screw 41 push the mounting plate 22 and drive the brush 21 to move in position until the distance between the brush 21 and the second branch rod 12 is matched with the radius of the pipeline 3. Subsequently, the operator tightens the first nut 42 to define the position of the first screw 41, thereby defining the positions of the mounting plate 22 and the brush 21. Next, the operator inserts the end of the second branch rod 12 facing away from the first branch rod 11 into the pipe 3 and brings the brush 21 into contact with the inner wall of the pipe 3.

Referring to fig. 1 and 2, the motor 5 is operated to drive the first branch rod 11 to rotate and drive the second branch rod 12 to rotate synchronously, and at this time, the first screw rod 41 follows the synchronous rotation, so that the brush 21 also follows the synchronous rotation along the inner wall of the pipeline 3. And, brush 21 is at the in-process that removes, produces frictional force between brush 21 and the 3 inner walls of pipeline to burr on 3 inner walls of pipeline is cleared up, makes 3 inner walls of pipeline more level and more smooth, reduces the in-process with gasbag shutoff pipeline 3, and the burr on 3 inner walls of pipeline punctures the gasbag, and influences the possibility of gasbag shutoff pipeline 3's sealed effect.

Referring to fig. 4, in the process of cleaning burrs on the inner wall of the pipe 3 by the brush 21, the brush 21 receives a reaction force from the inner wall of the pipe 3 and transmits the reaction force to the mounting pieces 23 and the mounting plate 22. At this time, the cushion pad 25 is elastically deformed to provide an elastic cushion against the reaction force received by the attachment piece 23, so that the reaction force received by the brush 21 is cushioned, and the possibility of damage to the brush 21 after receiving the reaction force is reduced.

Referring to fig. 2 and 3, a compression spring 7 is arranged between the mounting plate 22 and the second branch rod 12, and two ends of the compression spring 7 are respectively welded and fixed with the mounting plate 22 and the second branch rod 12. The arrangement of the compression spring 7 provides an elastic buffer for the reaction force received by the mounting plate 22, thereby further buffering the reaction force received by the brush 21 and further reducing the possibility of damage to the brush 21 after receiving the reaction force.

Referring to fig. 2 and 3, a corrugated sealing sheath 8 is arranged between the mounting plate 22 and the second branch rod 12, two ends of the corrugated sealing sheath 8 are respectively bonded and fixed with the mounting plate 22 and the second branch rod 12, the corrugated sealing sheath 8 covers the outer side of the compression spring 7, water vapor and dirt in the pipeline 3 are blocked outside the corrugated sealing sheath 8, the possibility that the water vapor and the dirt contact the compression spring 7 and the compression spring 7 is rusted is reduced, and the compression spring 7 is protected.

The implementation principle of the auxiliary mechanism for plugging the pipeline in the embodiment of the application is as follows: before the air bag is used for plugging the pipeline 3, an operator firstly unscrews the first nut 42 according to the inner diameter of the pipeline 3, and then moves the first screw rod 41, so that the first screw rod 41 pushes the mounting plate 22 and drives the brush 21 to move in position until the distance between the brush 21 and the rotating rod 1 is matched with the radius of the pipeline 3. At this time, the operator tightens the first nut 42 to fix the position of the first screw 41, thereby fixing the positions of the attachment plate 22 and the fur brush 21. Then the rotating rod 1 is extended into the pipeline 3, so that the brush 21 is pressed against the inner wall of the pipeline 3. Subsequently, motor 5 work drives dwang 1 and rotates for brush 21 carries out the circumferential rotation in step along the inner wall of pipeline 3, through brush 21 when rotating with the frictional force that 3 inner walls of pipeline produced, clears up the burr on the 3 inner walls of pipeline, makes 3 inner walls of pipeline become level and smooth, has reduced gasbag shutoff pipeline 3 time by the burr puncture on the 3 inner walls of pipeline, and influences the possibility of gasbag shutoff pipeline 3's sealed effect.

After the burrs in the pipeline 3 are cleaned, an operator takes the rotating rod 1 out of the pipeline 3, then unscrews the second nut 16, takes the second screw 15 off the rotating rod 1, and extracts the insertion block 13 from the slot 14, so that the rotating rod 1 becomes the separated first branch rod 11 and the second branch rod 12. Then, the operator carries out the divided arrangement and accomodate to first minute pole 11 and second minute pole 12, makes things convenient for the operator to carry. And finally, the operator puts the air bag into the pipeline and plugs the pipeline through the air bag.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (8)

1. The utility model provides an auxiliary mechanism of shutoff pipeline which characterized in that: including dwang (1) and be used for clearing up clearance subassembly (2) of pipeline (3), the one end of dwang (1) is used for stretching into in pipeline (3), the axial lead of dwang (1) coincides mutually with the axial lead of pipeline (3), clearance subassembly (2) include brush (21), brush (21) set up the outside at dwang (1), one side that brush (21) deviate from dwang (1) is inconsistent with pipeline (3) inner wall, one side that brush (21) deviate from pipeline (3) inner wall has set firmly mounting panel (22), be provided with between mounting panel (22) and dwang (1) and be used for adjusting adjustment subassembly (4) of interval between mounting panel (22) and dwang (1), the one end that pipeline (3) were kept away from in dwang (1) is equipped with and is used for driving dwang (1) pivoted motor (5), the output end of the motor (5) is coaxially connected with one end of the rotating rod (1) far away from the pipeline (3).

2. The auxiliary mechanism for plugging a pipeline according to claim 1, wherein: mounting panel (22) deviate from one side of dwang (1) and set up recess (221), recess (221) run through along length direction's both ends, draw-in groove (222) have been seted up along length direction on the inside wall of recess (221), draw-in groove (222) run through along length direction's both ends, draw-in groove (222) are linked together with recess (221), it has installation piece (23) to peg graft jointly in recess (221) and draw-in groove (222), one side fixed connection that the one end and installation piece (23) of brush (21) deviate from recess (221), the one end that installation piece (23) were kept away from in brush (21) extends recess (221), threaded connection has bolt (24) on mounting panel (22), bolt (24) are worn to establish in draw-in groove (222) and with installation piece (23) threaded connection.

3. The auxiliary mechanism for plugging a pipeline according to claim 2, wherein: be equipped with between installation piece (23) and recess (221) inner wall blotter (25), one side and recess (221) inner wall fixed connection that blotter (25) deviate from installation piece (23), one side that blotter (25) deviate from recess (221) is inconsistent with installation piece (23).

4. The auxiliary mechanism for plugging a pipeline according to claim 3, wherein: adjustment subassembly (4) include first screw rod (41), one side fixed connection that the one end and mounting panel (22) of first screw rod (41) deviate from brush (21), dwang (1) is worn to establish by the one end that mounting panel (22) were kept away from in first screw rod (41), just there is first nut (42) in the equal threaded connection in both sides of dwang (1) on first screw rod (41).

5. The auxiliary mechanism for plugging a pipeline according to claim 2, wherein: be equipped with compression spring (7) between mounting panel (22) and dwang (1), the both ends of compression spring (7) respectively with mounting panel (22) and dwang (1) fixed connection.

6. The auxiliary mechanism for plugging a pipeline according to claim 5, wherein: the corrugated sealing protective sleeve (8) is sleeved on the outer side of the compression spring (7), and the two ends of the corrugated sealing protective sleeve (8) are fixedly connected with the mounting plate (22) and the rotating rod (1) respectively.

7. The auxiliary mechanism for plugging a pipeline according to claim 3, wherein: dwang (1) divide into continuous first branch pole (11) and second branch pole (12), first branch pole (11) divide the one end side of pole (12) to set firmly inserted block (13) towards the second, the second divides pole (12) to set firmly slot (14) towards the first one end side of dividing pole (11), inserted block (13) are pegged graft in slot (14), the second divides and wears to be equipped with second screw rod (15) on pole (12), just inserted block (13) are worn to establish in second screw rod (15), divide the equal threaded connection in both sides of pole (12) at the second on second screw rod (15) to have second nut (16), the one end that inserted block (13) were kept away from in first branch pole (11) and the output coaxial coupling of motor (5).

8. The auxiliary mechanism for plugging a pipeline according to claim 4, wherein: be equipped with rubber pad (43) between first nut (42) and dwang (1), the both sides of rubber pad (43) respectively with first nut (42), dwang (1) inconsistent.

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