CN211805245U - Combined tunnel burr device capable of effectively removing sand blasting burrs - Google Patents

Abstract

The utility model discloses a can effectively remove unedged combination formula tunnel deckle edge device of sandblast, including base and skew warning unit, the central fixedly connected with frame at base top, the centre of both sides all rotates around the frame and is connected with swing pipe, the utility model relates to a sandblast deckle edge equipment technical field of polishing. This can effectively remove unedged combination formula tunnel deckle edge device of sandblast, through setting up about two sets of swing pipes and can dismantle grinding machanism, cooperation through hank wheel and stay cord isotructure, can realize two sets of reciprocal swings about can dismantling grinding machanism, polish the tunnel inner wall simultaneously, both sides are polished simultaneously, efficiency is higher, and need not manual operation, high durability and convenient use, swing pipe has utilized lever principle simultaneously, driving motor can bear can dismantle the first part strength of grinding machanism, the driving motor load has been alleviateed, and then can reach the effect of laborsaving power saving, and is simple in structure and practical.

Description

Combined tunnel burr device capable of effectively removing sand blasting burrs

Technical Field

The utility model relates to a sandblast deckle edge equipment technical field that polishes specifically is a combination formula tunnel deckle edge device that can effectively remove sandblast deckle edge.

Background

The process of cleaning and roughening the surface of the matrix by the impact action of the high-speed sand flow. Compressed air is used as power to form a high-speed spray beam to spray materials (copper ore sand, quartz sand, carborundum, iron sand and Hainan sand) to the surface of a workpiece to be treated at a high speed, so that the appearance or the shape of the outer surface of the workpiece is changed, and the surface of the workpiece obtains certain cleanliness and different roughness due to the impact and cutting action of an abrasive on the surface of the workpiece, so that the mechanical property of the surface of the workpiece is improved, the fatigue resistance of the workpiece is improved, the adhesive force between the workpiece and a coating is increased, the durability of a coating film is prolonged, and the leveling and decoration of a coating are facilitated.

Present tunnel inner wall is in the construction after, can carry out sand blasting in inside, but the sand blasting back, deckle edge still can appear in its surface, the deckle edge little protruding can take away from the bigger fragment of concrete formation on every side and fall when receiving vibrations, can lead to the fact great damage to the train when high-speed train is current, it is artifical handheld pole etc. of polishing to polish to the tunnel inner wall at present, comparatively difficultly, consequently lack a light laborsaving and efficient equipment of polishing and handle deckle edge.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a can effectively remove unedged combination formula tunnel deckle edge device of sandblast has solved artifical handheld grinding rod etc. and has polished tunnel inner wall, and is comparatively hard, consequently lacks the unedged problem of light laborsaving and the higher equipment of polishing of efficiency processing.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a can effectively remove unedged combination formula tunnel deckle edge device of sandblast, includes base and skew warning unit, the center fixedly connected with frame at base top, the centre of both sides all rotates around the frame and is connected with swing pipe, the top threaded connection of swing intraductal surface has the grinding machanism of dismantling, the bottom of swing pipe is through fixed cover fixedly connected with grinding motor, the inboard top fixedly connected with cross axle of frame, the surface rotation of cross axle is connected with first pulley, the top fixedly connected with fixed axle of swing pipe one side, and the surface cover of fixed axle is equipped with the stay cord, and the surface sliding connection of the surface of stay cord and first pulley, the rear side fixedly connected with driving motor at base top, the front end of driving motor output shaft runs through the back of frame and is connected with the internal surface rotation of frame, the surface of driving motor output shaft just is located the inboard fixedly connected with hank pulley of, and the bottom end of the pull rope is fixedly connected with the surface of the reel.

Preferably, can dismantle grinding machanism includes the screwed pipe, and the internal surface threaded connection of the bottom of screwed pipe surface and swing pipe, the inside of screwed pipe is run through there is the square shaft, the inside of swing pipe is rotated and is connected with square pipe, and square pipe box establishes the outside at the square shaft, the bottom of square pipe and the top fixed connection of grinding motor output shaft, the top fixedly connected with bearing of the surface of square shaft and the screwed pipe internal surface that is located, the bottom cover that the surface of square shaft and be located the bearing is equipped with the spring.

Preferably, the top fixedly connected with of screwed pipe beats the mill, the left side of beating the mill is fixedly connected with hard brush hair and soft brush hair respectively, hard brush hair is multilayer annular evenly distributed, soft brush hair is radial evenly distributed, the chip-removing groove has been seted up to the inside of beating the mill and be located between hard brush hair and the soft brush hair.

Preferably, the front side of the base left and right sides all rotates and is connected with independent steering roller, rotate through the bearing frame between the left and right sides of base rear side and be connected with the pivot, and the equal fixedly connected with directional wheel in both ends about the pivot, the inboard of bearing frame just is located the top of pivot and rotates and is connected with the elasticity swinging arms, the surface of pivot just promotes the piece with elasticity swinging arms coplanar fixedly connected with.

Preferably, the rear side fixedly connected with at base top promotes the handrail, promote the inboard bottom of handrail and be located the rear side fixedly connected with trigger switch of elasticity swinging arms, promote the top fixedly connected with pilot lamp of handrail front side, and pass through wire electric connection between trigger switch and the pilot lamp.

Preferably, equal fixedly connected with bearing diagonal frame, both sides between the left and right sides of frame and the top of base the equal fixedly connected with installation cover in positive below of bearing diagonal frame, and the inside joint of installation cover has the range finding box, the inside infrared range finding probe of fixedly connected with respectively of range finding box and skew pilot lamp, the front side fixedly connected with host computer at base top, and the surface of host computer pass through the wire respectively with grinding motor, driving motor, infrared range finding probe and skew pilot lamp electric connection.

Preferably, a second pulley is rotatably connected between two sides of the bottom of the inner surface of the rack, the surface of the right stay cord is in sliding connection with the surface of the second pulley, one side of the swing pipe, which is close to the inclined support frame, is fixedly connected with a bolt sleeve, and the bolt sleeve is fixedly connected with the inclined support frame through a positioning bolt.

(III) advantageous effects

The utility model provides a can effectively remove unedged combination formula tunnel deckle edge device of sandblast. Compared with the prior art, the method has the following beneficial effects:

(1) the combined tunnel burr device capable of effectively removing sand blasting burrs is characterized in that a swing pipe is rotatably connected between the front side and the rear side of a frame, the top end of the inner surface of the swing pipe is in threaded connection with a detachable polishing mechanism, the bottom end of the swing pipe is fixedly connected with a polishing motor through a fixed sleeve, the top of the inner side of the frame is fixedly connected with a transverse shaft, the surface of the transverse shaft is rotatably connected with a first pulley, the top end of one side of the swing pipe is fixedly connected with a fixed shaft, a pull rope is sleeved on the surface of the fixed shaft, the surface of the pull rope is slidably connected with the surface of the first pulley, the rear side of the top of a base is fixedly connected with a driving motor, the front end of an output shaft of the driving motor penetrates through the back of the frame and is rotatably connected with the inner surface of the frame, through setting up about two sets of swing pipes and can dismantle grinding machanism, through the cooperation of hank wheel and stay cord isotructure, can realize two sets of grinding machanism reciprocal swings about dismantling, polish the tunnel inner wall simultaneously, both sides are polished simultaneously, and efficiency is higher, and need not manual operation, convenient to use, swing pipe has utilized lever principle simultaneously, and driving motor can bear and dismantle grinding machanism first part strength, has alleviateed driving motor load, and then can reach the effect of laborsaving power saving, and simple structure is practical.

(2) The combined tunnel burr device capable of effectively removing sand blasting burrs comprises a threaded pipe, wherein the bottom end of the outer surface of the threaded pipe is in threaded connection with the inner surface of a swing pipe, a square shaft penetrates through the inside of the threaded pipe, a square pipe is rotatably connected inside the swing pipe and sleeved outside the square shaft, the bottom end of the square pipe is fixedly connected with the top end of an output shaft of a grinding motor, a bearing is fixedly connected to the surface of the square shaft and the top end of the inner surface of the threaded pipe, a spring is sleeved on the surface of the square shaft and the bottom of the bearing, a grinding disc is fixedly connected to the top end of the threaded pipe, hard bristles and soft bristles are respectively and fixedly connected to the left side of the grinding disc, the hard bristles are uniformly distributed in a multilayer annular shape, the soft bristles are uniformly distributed in a radial direction, a scrap withdrawing groove is formed in the grinding disc and positioned between the hard bristles and the soft bristles, and, can pull down when not using, reduced the volume and not occupy too much space, and be convenient for transport, the installation is also comparatively simple, and can dismantle grinding machanism's the mode that the part of polishing adopted soft or hard brush hair to combine, both can get rid of deckle edge fast, also can clear up and get rid of unnecessary tiny particle, and the chip groove that sets up simultaneously can discharge deckle edge piece fast, avoids staying other partial scratches of wall at the mill of polishing, keeps surface quality and cleanliness factor.

(3) The combined tunnel burr device capable of effectively removing sand blasting burrs is characterized in that independent steering idler wheels are rotationally connected to the front sides of the left side and the right side of the base, a rotating shaft is rotationally connected between the left side and the right side of the rear side of the base through a bearing seat, directional wheels are fixedly connected to the left end and the right end of the rotating shaft, an elastic swinging rod is rotationally connected to the inner side of the bearing seat and the upper side of the rotating shaft, a pushing block is fixedly connected to the surface of the rotating shaft and the same plane with the elastic swinging rod, a pushing handrail is fixedly connected to the rear side of the top of the base, a triggering switch is fixedly connected to the bottom of the pushing handrail and is located at the rear side of the elastic swinging rod, an indicating lamp is fixedly connected to the top of the front side of the pushing handrail, the triggering switch is electrically connected with the indicating lamp through a lead, the pushing, make its top extrusion trigger switch and make the pilot lamp light the warning, through structure here, can remind once when the device removes fixed distance, and this distance is the width of the orbit of polishing promptly for the mill, can guarantee that whole tunnel polishing can not appear omitting after finishing, and simple mechanical structure realizes automated operation, and convenient to use is with low costs.

(4) The combined tunnel burr device capable of effectively removing sand blasting burrs comprises a frame, oblique support frames fixedly connected between the left side and the right side of the frame and the top of a base, installation sleeves fixedly connected below the front sides of the oblique support frames on the two sides, a distance measuring box clamped inside the installation sleeves, an infrared distance measuring probe and an offset indicator lamp fixedly connected inside the distance measuring box respectively, a host fixedly connected to the front side of the top of the base, a polishing motor, a driving motor, the infrared distance measuring probe and the offset indicator lamp electrically connected to the surface of the host through wires, an offset warning unit comprising a processor, a data comparison module and a feedback module, wherein the output ends of the infrared distance measuring probe and the feedback module are connected to the input end of the processor, the output end of the processor is connected to the input ends of the data comparison module and the offset indicator lamp respectively, and the output end of the data comparison module is connected to the input end of the, through setting up the range finding box in both sides, usable infrared ranging keeps away from the interval of judging device and tunnel inner wall both sides, through the data contrast, can light the warning under the condition that skew center line appears, makes the adjustable device of operator removal orbit, guarantees that both sides grinding machanism can all laminate the inner wall and polish, avoids omitting.

Drawings

FIG. 1 is a front view of the structure of the present invention;

fig. 2 is a side view of the cross shaft and the first pulley structure of the present invention;

FIG. 3 is a cross-sectional view of the swing pipe and threaded pipe structure of the present invention;

FIG. 4 is a left side view of the polishing disc structure of the present invention;

FIG. 5 is a side view of the structure of the elastic oscillating rod and the trigger switch of the present invention;

FIG. 6 is a right side view of the partial structure of the present invention;

FIG. 7 is an enlarged view of a portion of the structure of FIG. 1;

FIG. 8 is a schematic view of a partial structure of the oscillating pipe of the present invention;

fig. 9 is a partially enlarged view of the point B in fig. 1 according to the present invention.

In the figure, 1-base, 2-offset warning unit, 30-frame, 4-swinging pipe, 5-detachable polishing mechanism, 51-threaded pipe, 52-square shaft, 53-chip-removing groove, 54-bearing, 55-spring, 56-polishing disk, 57-hard bristle, 58-soft bristle, 6-fixing sleeve, 7-polishing motor, 8-horizontal shaft, 9-first pulley, 10-fixing shaft, 11-pull rope, 12-driving motor, 13-winch wheel, 14-independent steering roller, 15-bearing seat, 16-rotating shaft, 17-orientation wheel, 18-elastic swinging rod, 19-pushing block, 20-pushing handrail, 21-trigger switch, 22-indicator light, 23-inclined supporting frame, 24-an installation sleeve, 25-a distance measuring box, 26-an infrared distance measuring probe, 27-an offset indicator light, 28-a main machine, 29-a second pulley, 30-a bolt sleeve and 34-a square tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, an embodiment of the present invention provides a technical solution: a combined tunnel burr device capable of effectively removing sand blasting burrs comprises a base 1 and an offset warning unit 2, wherein the offset warning unit 2 is an electronic module in a host 28, a rack 3 is fixedly connected to the center of the top of the base 1, swing pipes 4 are rotatably connected to the middles of the front side and the rear side of the rack 3, detachable polishing mechanisms 5 are in threaded connection with the top ends of the inner surfaces of the swing pipes 4, polishing motors 7 are fixedly connected to the bottom ends of the swing pipes 4 through fixing sleeves 6, a cross shaft 8 is fixedly connected to the top of the inner side of the rack 3, a first pulley 9 is rotatably connected to the surface of the cross shaft 8, two pull ropes 11 are arranged in front of and behind the first pulley 9 and respectively correspond to the two pull ropes 11 for enabling the pull ropes 11 to be turned, a fixing shaft 10 is fixedly connected to the top end of one side of the swing pipe 4, a pull rope, the rear side of the top of the base 1 is fixedly connected with a driving motor 12, the front end of an output shaft of the driving motor 12 penetrates through the back of the rack 3 and is connected with the inner surface of the rack 3 in a rotating manner, the surface of the output shaft of the driving motor 12 is fixedly connected with a reel 13 positioned on the inner side of the rack 3, the bottom end of a pull rope 11 is fixedly connected with the surface of the reel 13, through arranging a left group of swing pipes 4 and a right group of swing pipes 4 and detachable polishing mechanisms 5, through the matching of structures such as the reel 13, the pull rope 11 and the like, the left and right reciprocating swing of the two groups of detachable polishing mechanisms 5 can be realized, the inner wall of a tunnel is simultaneously polished, the two sides are simultaneously polished, the efficiency is higher, the manual operation is not needed, the use is convenient, meanwhile, the swing pipes 4 utilize the lever principle, the driving, the structure is simple and practical.

Referring to fig. 3-4, the detachable polishing mechanism 5 includes a threaded pipe 51, the bottom end of the outer surface of the threaded pipe 51 is in threaded connection with the inner surface of the swing pipe 4, a square shaft 52 penetrates through the interior of the threaded pipe 51, a square pipe 34 is rotatably connected to the interior of the swing pipe 4, the square pipe 34 is sleeved on the exterior of the square shaft 52, the bottom end of the square pipe 34 is fixedly connected to the top end of the output shaft of the polishing motor 7, a bearing 54 is fixedly connected to the top end of the surface of the square shaft 52 and located on the inner surface of the threaded pipe 51, a spring 55 is sleeved on the surface of the square shaft 52 and located at the bottom of the bearing 54, the spring 55 is arranged to enable the square shaft 52 to have a short-distance expansion amount, so as to ensure that bristles on the polishing disc 56 can be attached to a wall, a polishing disc 56 is fixedly connected to the top end of the threaded pipe 51, hard bristles, soft brush hair 58 is radial evenly distributed, the chip groove 53 has been seted up to the inside of polishing disc 56 and be located between hard brush hair 57 and the soft brush hair 58, can dismantle grinding machanism 5 utilizes the threaded connection mode to install, can pull down when not using, it does not occupy too much space to have reduced the volume, and be convenient for transport, the installation is also comparatively simple, and the mode that grinding machanism 5's the part of polishing adopted soft and hard brush hair to combine can be dismantled, both can get rid of deckle edge fast, also can clear up and get rid of unnecessary tiny particle, chip groove 53 that sets up simultaneously can discharge deckle edge piece fast, avoid staying other partial scratches of wall at polishing disc 56, surface quality and cleanliness factor are kept.

Referring to fig. 5, the front sides of the left and right sides of the base 1 are rotatably connected with independent steering rollers 14, the left and right sides of the rear side of the base 1 are rotatably connected with a rotating shaft 16 through a bearing seat 15, the left and right ends of the rotating shaft 16 are fixedly connected with directional wheels 17, the inner side of the bearing seat 15 and above the rotating shaft 16 are rotatably connected with an elastic oscillating rod 18, the lower half of the elastic oscillating rod 18 is heavier than the upper half thereof, so that the elastic oscillating rod can automatically reset after a pushing block 19 passes through, a limiting block is arranged at the right side position of the lower half of the elastic oscillating rod 18 on the surface of the bearing seat 15 to limit the inclination angle of the elastic oscillating rod 18, the surface of the rotating shaft 16 and the same plane as the elastic oscillating rod 18 are fixedly connected with the pushing block 19, the rear side of the top of the base 1 is fixedly connected with a pushing handrail 20, the bottom, promote the top fixedly connected with pilot lamp 22 of 20 front sides of handrail, and pass through wire electric connection between trigger switch 21 and the pilot lamp 22, promote piece 19 through setting up in pivot 16, when pivot 16 rotates a week, promote piece 19 and can promote the 18 bottoms of elasticity swinging arms, make its top extrusion trigger switch 21 and make pilot lamp 22 light the warning, through structure here, can once remind when the device removes fixed distance, and this distance is the width of the orbit of polishing of mill 56 promptly, can guarantee that whole tunnel polishing can not appear omitting after finishing, simple mechanical structure realizes automated operation, high durability and convenient use is with low costs.

Referring to fig. 6-7, the inclined support frames 23 are fixedly connected between the left and right sides of the frame 3 and the top of the base 1, the mounting sleeves 24 are fixedly connected below the front surfaces of the inclined support frames 23, the distance measuring box 25 is clamped inside the mounting sleeves 24, the infrared distance measuring probe 26 and the offset indicator lamp 27 are fixedly connected inside the distance measuring box 25 respectively, the infrared distance measuring probe 26 adopts the technology of detecting obstacles of an automobile, and for the prior art, no further description is given, the main frame 28 is fixedly connected to the front side of the top of the base 1, and the surface of the main frame 28 is electrically connected with the polishing motor 7, the driving motor 12, the infrared distance measuring probe 26 and the offset indicator lamp 27 through wires.

Referring to fig. 8-9, a second pulley 29 is rotatably connected between two sides of the bottom of the inner surface of the frame 3, the surface of the right-side pull rope 11 is slidably connected with the surface of the second pulley 29, the second pulley 29 can rotate the right-side pull rope 11 to the left side and wind the left-side pull rope 11 on the reel 13 in the same direction, a bolt sleeve 30 is fixedly connected to one side of the swing pipe 4 close to the inclined support frame 23, and the bolt sleeve 30 is fixedly connected with the inclined support frame 23 through a positioning bolt, so that the swing pipe 4 on two sides can be prevented from falling down and occupying more space during transportation when not in use, and the positioning bolt can be used to cooperate with the bolt sleeve 30 to fix the swing pipe 4 and the inclined support frame 23.

And those not described in detail in this specification are well within the skill of those in the art.

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

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

Claims (7)

1. The utility model provides a can effectively remove unedged combination formula tunnel deckle edge device of sandblast, includes base (1) and skew warning unit (2), the central fixedly connected with frame (3) at base (1) top, its characterized in that: the middle of both sides all rotates around frame (3) and is connected with swing pipe (4), the top threaded connection of swing pipe (4) internal surface has can dismantle grinding machanism (5), the bottom of swing pipe (4) is through fixed cover (6) fixedly connected with grinding motor (7), the top fixedly connected with cross axle (8) of frame (3) inboard, the surface of cross axle (8) rotates and is connected with first pulley (9), the top fixedly connected with fixed axle (10) of swing pipe (4) one side, and the surface cover of fixed axle (10) is equipped with stay cord (11), and the surface of stay cord (11) and the surface sliding connection of first pulley (9), the rear side fixedly connected with driving motor (12) at base (1) top, the front end of driving motor (12) output shaft runs through the back of frame (3) and is connected with the internal surface rotation of frame (3), the surface of the output shaft of the driving motor (12) is fixedly connected with a reel (13) on the inner side of the frame (3), and the bottom end of the pull rope (11) is fixedly connected with the surface of the reel (13).

2. The combined tunnel burr apparatus of claim 1, wherein: can dismantle grinding machanism (5) including screwed pipe (51), and the bottom of screwed pipe (51) surface and the internal surface threaded connection of swing pipe (4), the inside of screwed pipe (51) is run through there is square shaft (52), the inside rotation of swing pipe (4) is connected with square pipe (34), and square pipe (34) cover establishes the outside at square shaft (52), the top fixed connection of the bottom of square pipe (34) and grinding motor (7) output shaft, the top fixedly connected with bearing (54) of the surface of square shaft (52) and being located screwed pipe (51) internal surface, the bottom cover that the surface of square shaft (52) just is located bearing (54) is equipped with spring (55).

3. The combined tunnel burr device of claim 2, wherein: the top fixedly connected with of screwed pipe (51) grinds dish (56), the left side of grinding dish (56) is fixedly connected with stiff bristle (57) and soft brush hair (58) respectively, stiff bristle (57) are multilayer annular evenly distributed, soft brush hair (58) are radial evenly distributed, the inside of grinding dish (56) just is located and has seted up chip-removing groove (53) between stiff bristle (57) and soft brush hair (58).

4. The combined tunnel burr apparatus of claim 1, wherein: the utility model discloses a rotary steering mechanism, including base (1), pivot (16), the inboard top that just is located pivot (16) of bearing frame (15) rotates and is connected with elasticity swinging arms (18), the surface of pivot (16) just with elasticity swinging arms (18) coplanar fixedly connected with promote piece (19), the front side of base (1) left and right sides all rotates and is connected with independent steering wheel (14), rotate through bearing frame (15) between the left and right sides of base (1) rear side and be connected with pivot (16), and pivot (16) the equal fixedly connected with in both ends directional wheel (17) about, the inboard of bearing frame (15) rotates and.

5. The combined tunnel burr device of claim 4, wherein: the utility model discloses a base, including base (1), rear side fixedly connected with of base (1) top promotes handrail (20), promote the inboard bottom of handrail (20) and be located the rear side fixedly connected with trigger switch (21) of elasticity swinging arms (18), promote top fixedly connected with pilot lamp (22) of handrail (20) front side, and pass through wire electric connection between trigger switch (21) and pilot lamp (22).

6. The combined tunnel burr apparatus of claim 1, wherein: equal fixedly connected with bearing diagonal frame (23), both sides between the left and right sides of frame (3) and the top of base (1) the equal fixedly connected with installation cover (24) in positive below of bearing diagonal frame (23), and the inside joint of installation cover (24) has range finding box (25), inside fixedly connected with infrared range finding probe (26) and the skew pilot lamp (27) of difference of range finding box (25), the front side fixedly connected with host computer (28) at base (1) top, and the surface of host computer (28) pass through the wire respectively with grinding motor (7), driving motor (12), infrared range finding probe (26) and skew pilot lamp (27) electric connection.

7. The combined tunnel burr device of claim 6, wherein: the utility model discloses a swing pipe, including frame (3), swing pipe (4), swing pipe, frame (3) internal surface bottom, the rotation is connected with second pulley (29) between the both sides of frame (3) internal surface bottom, and the surface sliding connection of the surface of right side stay cord (11) and second pulley (29), swing pipe (4) are close to one side fixedly connected with bolt cover (30) of bearing diagonal frame (23), and pass through positioning bolt fixed connection between bolt cover (30) and bearing diagonal frame (23).

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