CN111520064B - Multifunctional operation ladder vehicle - Google Patents
Multifunctional operation ladder vehicle Download PDFInfo
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- CN111520064B CN111520064B CN202010354156.5A CN202010354156A CN111520064B CN 111520064 B CN111520064 B CN 111520064B CN 202010354156 A CN202010354156 A CN 202010354156A CN 111520064 B CN111520064 B CN 111520064B
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- Prior art keywords
- pawl
- ladder
- frame
- limiting
- chassis
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/32—Accessories, e.g. brakes on ladders
- E06C5/36—Safety devices against slipping or falling of ladders; Safety devices against overloading ladders
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/50—Joints or other connecting parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention provides a multifunctional operation ladder car, belonging to the technical field of railway track ladder cars. The multifunctional operation ladder car provided by the invention realizes the braking and anti-tipping of the ladder car, greatly improves the safety of the ladder car, and can be used at various positions such as crossed rails and turnouts; the support frame comprises an extension ladder, the extending height of the ladder car can be adjusted according to the individual height of an operator, the adjusting mode is convenient and fast, and the safety is good; the working platform can adjust the relative positions of the fixed platform and the sliding platform according to the actual operation range, and is fixed by the positioning pin, so that enough working space can be provided.
Description
Technical Field
The invention belongs to the technical field of railway track ladder cars, and particularly discloses a multifunctional operation ladder car.
Background
The ladder car is the instrument that supplementary staff accomplished the high altitude construction, and the ladder car divide into a lot of, and one of them can walk on the railway rails, accomplishes work such as the maintenance of tunnel top. The existing operation ladder car has the following problems:
1. the locking device is absent, the locking of the operation ladder car on the track can be realized through a simple structure at the position without crossing the rail, but the existing locking device cannot be used at the turnout and the intersection of a plurality of rails, and in the actual operation, the more the rail crossing position is, the larger the operation surface is, the more the work is, the more the safety of the work needs to be ensured;
2. the height of the operation ladder car cannot be adjusted, the individual heights of the operators are different, the heights of construction positions are different, and the operators often feel that the heights are not suitable but cannot be adjusted after climbing the ladder car;
3. the working range of the working bucket of the operation ladder vehicle is very small and is limited in the working bucket, but the working bucket often needs to exceed the moving range of the working bucket during construction, and the moving range of an operator is widened by using a wood plate in the traditional method, so that great potential safety hazards exist;
4. the operation ladder car is heavy, and the transportation is carried inconveniently, and equipment, dismantlement are consuming time longer, and operation "skylight period" is very short during the construction, perhaps when carrying out the construction, has the problem that the cross construction influences each other certainly, when the railway locomotive carries out the transportation operation, needs to put aside the operation ladder car express delivery in order to make things convenient for haulage vehicle current.
Disclosure of Invention
The invention aims to provide a multifunctional operation ladder vehicle to improve the problems.
In order to achieve the purpose, the invention provides a multifunctional operation ladder truck, which comprises a working platform, a support frame, a chassis and end anti-tipping devices arranged at two ends of the chassis; the working platform is arranged at the top end of the support frame; the chassis is arranged at the bottom end of the supporting frame, and track wheels for walking on the track are arranged on the chassis; the end part anti-tipping device comprises a pawl shaft, a pawl shaft sleeve, an upper profiling limiting rod, a lower profiling limiting rod and a bottom cover; an upper pawl and a lower pawl are arranged on the pawl shaft along the axial direction; the upper pawl and the lower pawl are opposite in direction and are connected with a pawl mounting hole of the pawl shaft through a first spring; the pawl shaft sleeve is connected with the chassis and provided with a first special-shaped shaft hole which is formed by sequentially connecting and enclosing a plurality of first arc-shaped grooves, and the bottom end of the pawl shaft sleeve is provided with a plurality of connecting columns; the inner diameter of the first special-shaped shaft hole is matched with the diameter of the pawl shaft; the upper profiling limiting rod and the lower profiling limiting rod respectively comprise a connecting rod, and a connecting sleeve and a limiting wheel which are arranged at two ends of the connecting rod; the connecting sleeve is provided with a second special-shaped shaft hole which is formed by sequentially connecting and enclosing a plurality of second arc-shaped grooves; the inner diameter of the second special-shaped shaft hole is matched with the diameter of a cylindrical space formed by the plurality of connecting columns in a surrounding manner; the limiting wheel is rotationally connected with the connecting rod and is used for rolling contact with the groove on the side surface of the track; the bottom cover is positioned below the connecting sleeve of the lower profiling limiting rod and is connected with the connecting column penetrating through the second special-shaped shaft hole; the pawl shaft can pass through first dysmorphism shaft hole and second dysmorphism shaft hole, goes up the pawl and can support by in first arc wall or second arc wall with lower pawl, goes up the second arc wall that corresponds when profile modeling gag lever post and lower profile modeling gag lever post rotate to the track outside and slides from the claw back of the body of last pawl and lower pawl respectively and to the claw back of the body application of force, and the second arc wall that corresponds when rotating to the track inboard blocks respectively on last pawl and lower pawl.
Furthermore, a pawl shaft sleeve mounting groove is arranged on the inner side and/or the outer side of the chassis; an L-shaped shaft sleeve insertion plate is arranged on the pawl shaft sleeve; the vertical plate of the shaft sleeve insertion plate is inserted in the pawl shaft sleeve mounting groove, and the transverse plate is abutted against the pawl shaft sleeve mounting groove.
Furthermore, the multifunctional operation ladder car also comprises brakes and lateral anti-tipping devices which are arranged on two sides of the chassis; the brake and lateral overturn-preventing device comprises a connecting frame, a rotating plate, a limiting frame and a bidirectional ratchet lock structure; the connecting frame comprises a chassis connecting frame used for being connected with the chassis and two upper connecting plates oppositely arranged on the bottom surface of the chassis connecting frame; the limiting frame comprises a limiting plate clamped on the lower surface of the track and two lower connecting plates oppositely arranged on the limiting plate; shaft holes are formed in the upper connecting plate and the lower connecting plate; two ends of the rotating plate are provided with shaft sleeves; the bidirectional ratchet lock structure comprises a rotating shaft, an end cover and a non-return pawl; the rotating shaft is fixedly arranged in the shaft sleeve in a penetrating mode, two ends of the rotating shaft penetrate through the shaft holes, ratchets in opposite directions are arranged on the circumferential surfaces of the two ends of the rotating shaft, and end cover mounting holes are formed in the axial end surfaces of the two ends of the rotating shaft; the end covers are fixed on the outer sides of the upper connecting plate and the lower connecting plate and are in rotating fit with the end cover mounting holes of the rotating shaft; the non-return pawl is rotatably arranged on the inner side of the end cover and used for preventing ratchets at two ends of the rotating shaft from reversely rotating.
Furthermore, a clamping groove is formed in the chassis, and a vertical threaded rod mounting groove is formed in the inner side and/or the outer side of the chassis; the chassis connecting frame comprises a T-shaped frame, an L-shaped clamping plate and a threaded sleeve handle; the T-shaped frame comprises a transverse plate connected with the two upper connecting plates and a vertical threaded rod penetrating through the vertical threaded rod mounting groove; the vertical plate of the L-shaped clamping plate is inserted in the clamping groove, and the transverse plate passes through the vertical threaded rod and abuts against the vertical threaded rod mounting groove 3.2; threaded sleeve handle threaded connection just is located the top of L shape cardboard on vertical threaded rod.
Furthermore, the support frame comprises two extension ladders which are oppositely arranged; the telescopic ladder comprises a plurality of ladder frames and a limiting device; the ladder frame comprises two vertical rods which are oppositely arranged and a cross beam which is connected with the two vertical rods, the vertical rod of the upper ladder frame in the two adjacent ladder frames is inserted into the vertical rod of the lower ladder frame, the vertical rod of the upper ladder frame is provided with a ratchet bar, the vertical rod of the lower ladder frame is provided with a jack, the vertical rod of the lowermost ladder frame is connected with the chassis, and the ladder frame at the uppermost position is connected with the working platform; the back of the ratchet bar is upward; the limiting device comprises two pawl mounting blocks, a limiting pawl rotatably mounted on the pawl mounting blocks, a force application handle connected with the two pawl mounting blocks and a positioning frame arranged between the two pawl mounting blocks; the positioning frame is sleeved on the cross beam of the ladder frame, and two ends of the second spring are respectively connected with the positioning frame and the cross beam; the limiting pawl penetrates through the jack to be matched with the ratchet bar, the claw web faces upwards, a torsion spring is arranged between the claw web and the pawl mounting block, and a pawl limiting plate is arranged below the claw back.
Furthermore, the top ends of the two vertical rods of the uppermost ladder frame are provided with connecting beams; in the two extension ladders, the connecting beam and the working platform are fixedly connected through the locking screw rod and are fixed extension ladders, and the connecting beam and the working platform are connected through the first linear bearing in a sliding mode and are sliding extension ladders.
Further, the working platform comprises a fixed platform, a sliding platform and a positioning pin; the fixed platform is of a hollow concave structure, and a first positioning hole is formed in the bottom plate on the inner side; the sliding platforms are inserted at two ends of the fixed platform, and the bottom surfaces of the sliding platforms are provided with second positioning holes; the positioning pin passes through the first positioning hole and the second positioning hole.
Further, the chassis comprises a first tray body and a second tray body; an inserting groove is formed in the end portion of the first tray body, and a limiting hole is formed in the side wall of the inserting groove; the tip of second disk body be provided with inserting groove complex bayonet joint, the side of bayonet joint is provided with the stopper mounting groove, the stopper passes through the third spring to be connected with the stopper mounting groove, and stopper and spacing hole cooperation.
Furthermore, ladder rack mounting bases are arranged on the first tray body and the second tray body; the vertical rod of the ladder frame positioned at the lowest part is spliced with the ladder frame mounting base.
Further, the pawl shaft sleeve mounting groove and the vertical threaded rod mounting groove are formed by enclosing a plate arranged on the chassis.
Compared with the prior art, the invention has the following beneficial effects;
1. when the upper profiling limiting rod and the lower profiling limiting rod rotate towards the inner side of the track, the corresponding second arc-shaped grooves are respectively clamped on the upper pawl and the lower pawl, the connecting sleeve cannot rotate, so that the unidirectional expansion and locking of the upper profiling limiting rod and the lower profiling limiting rod are realized, and the ladder car can be prevented from toppling forwards or backwards until the limiting wheels are clamped in the grooves on the side faces of the track; when the ladder car travels, the pawl is axially pulled to the first special-shaped shaft hole, the upper profiling limiting rod and the lower profiling limiting rod can rotate towards the inner side of the track, and the limiting wheels cannot interfere with the track;
2. the multifunctional operation ladder car is provided with the brake and lateral anti-tipping device on the chassis, when the ladder car reaches a specified position and needs to be locked, the non-return pawl is rotated to be separated from the ratchets at the two ends of the rotating shaft, the rotating plate and the limiting frame can be pulled at the moment until the limiting plate is tightly clamped on the lower surface of the track, the non-return pawl is rotated to be inserted into the tooth grooves of the ratchets, the non-return pawls on the end covers at the two ends of the rotating shaft are opposite in direction, so that the non-return pawls on the end covers at the two sides can prevent the corresponding ratchets from reversely rotating, the rotating shaft is locked, the clockwise rotation and the anticlockwise rotation can be avoided, and the brake and the lateral anti-tipping of the ladder car can be realized; the end anti-tipping device is matched with the brake and the lateral anti-tipping device for use, so that the safety of the ladder truck is greatly improved, and the ladder truck can be used at various positions such as crossed rails and turnouts;
3. the brake, the lateral anti-tipping device and the end anti-tipping device are detachably arranged on the chassis, can be selectively used according to actual conditions, and can be selectively arranged inside or outside the chassis according to rail conditions, so that the flexibility is higher;
4. the multifunctional operation ladder car provided by the invention is provided with the telescopic ladder, when the ladder frame extends out, the tooth back of the ratchet bar slides over the claw back of the limiting pawl and applies force to the claw back, the limiting pawl turns upwards, after the upward-moving acting force is removed, the limiting pawl is clamped in the tooth groove of the ratchet bar, under the blocking action of the pawl limiting plate, the limiting pawl cannot turn downwards, the ladder frame is locked, and the construction safety is greatly improved; when the ladder frame is retracted, the force application handle is pulled to enable the limiting pawls to be disengaged from the insertion holes, the ladder frame is pressed down to the limit positions one by one, the force application handle is loosened, and the limiting pawls are inserted into the insertion holes again under the elastic force of the second spring; the extension ladder can adjust the extending height of the ladder car according to the individual height of an operator, and is convenient and fast in adjustment mode and good in safety;
5. the adjustable working platform is arranged on the multifunctional operation ladder car, the relative positions of the fixed platform and the sliding platform can be adjusted according to the actual operation range, and the fixed platform and the sliding platform are fixed by the positioning pin, so that enough working space can be provided;
6. the multifunctional operation ladder car provided by the invention has the advantages that all parts are detachably connected, the dismounting and carrying are convenient, 3 detached ladder cars can be completely carried by people, and the quick movement of the ladder cars can be realized.
Drawings
Fig. 1 is a schematic structural view of a multifunctional operation ladder truck according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a working platform in the multi-functional working ladder of FIG. 1;
FIG. 3 is a schematic view of the telescopic ladder of the multi-functional working ladder vehicle shown in FIG. 1;
fig. 4 is a schematic structural view of a limiting device in the extension ladder shown in fig. 2;
FIG. 5 is an enlarged view of portion A of the spacing device shown in FIG. 4;
FIG. 6 is a view in the other direction of FIG. 5;
FIG. 7 is a view showing the engagement of the ratchet bar and the pawl in the extension ladder of FIG. 4;
FIG. 8 is a view showing the working platform and the extension ladder of the multi-purpose working ladder of FIG. 1;
fig. 9 is a schematic structural view of a chassis in the multi-functional working ladder of fig. 1;
FIG. 10 is a mating view of a plug slot and a plug connector in the chassis shown in FIG. 9;
FIG. 11 is a schematic view showing the structure of an end anti-toppling device in the multi-functional working ladder of FIG. 1;
FIG. 12 is a schematic view of the structure of the pawl shaft in the end rollover prevention device shown in FIG. 11;
FIG. 13 is a cross-sectional view in the direction B-B of the pawl axis shown in FIG. 12;
FIG. 14 is a schematic view of the ratchet sleeve of the end rollover prevention device shown in FIG. 11;
FIG. 15 is a view of the pawl shaft, pawl sleeve and bottom cover of the end rollover prevention device shown in FIG. 11;
FIG. 16 is a schematic structural view of the upper contoured stop bar or the lower contoured stop bar of the end tipping prevention device of FIG. 11;
FIG. 17 is a schematic structural view of a brake and lateral anti-rollover device of the multi-functional working ladder of FIG. 1;
FIG. 18 is a view showing the combination of the pivotal plate and the shaft of the brake and lateral anti-rollover device shown in FIG. 17;
FIG. 19 is a combination view of the end cap, pawl and ratchet teeth of the brake and lateral anti-rollover device shown in FIG. 17;
fig. 20 is a diagram of the definitions of the dorsum, ventral, dorsum and ventral.
In the figure: 1-a working platform; 1.01-fixed platform; 1.02-sliding platform; 1.03-locating pin; 1.04-a second linear bearing;
2-a support frame; 2.01-vertical rods; 2.02-ratchet bar; 2.03-pawl mounting block; 2.04-limit pawl; 2.05-force application handle; 2.06-positioning frame; 2.07-a second spring; 2.08-torsion spring; 2.09-connecting beam; 2.10-locking the screw rod; 2.11 — first linear bearing; 2.12-beam; 2.13-pawl limit plate;
3-a chassis; 3.01-rail wheel; 3.02-pawl shaft sleeve mounting groove; 3.03-card slot; 3.04-vertical threaded rod mounting groove; 3.05-inserting groove; 3.06-plug connector; 3.07-a limiting block; 3.08-third spring; 3.09-mounting a base on the ladder frame;
4-an end tip roll-over prevention device; 4.01-pawl shaft; 4.02-pawl shaft sleeve; 4.03-upper profiling limiting rod; 4.04-lower profile modeling limit rod; 4.05-bottom cap; 4.06-upper pawl; 4.07-lower pawl; 4.08 — first spring; 4.09-a first special-shaped shaft hole; 4.10-connecting column; 4.11-connecting rod; 4.12-connecting sleeve; 4.13-limiting wheel; 4.14-second shaped axle hole; 4.15-shaft sleeve plugboard;
5-braking and lateral anti-tipping devices; 5.01-rotating plate; 5.02-upper connecting plate; 5.03-limiting plate; 5.04-lower connecting plate; 5.05-rotating shaft; 5.06-end cap; 5.07-non-return pawl; 5.08-ratchet; 5.09-T shaped frame; 5.10-L-shaped snap-gauge; 5.11-thread sleeve handle; 5.12-rotating the handle;
100-track.
Detailed Description
The embodiment provides a multifunctional operation ladder vehicle, which comprises a working platform 1, a support frame 2, a chassis 3 and end anti-tipping devices 4 arranged at two ends of the chassis 3; the working platform 1 is arranged at the top end of the support frame 2; the chassis 3 is arranged at the bottom end of the support frame 2, and the chassis 3 is provided with track wheels 3.01 for walking on the track 100; the end part anti-tipping device 4 comprises a pawl shaft 4.01, a pawl shaft sleeve 4.02, an upper profiling limiting rod 4.03, a lower profiling limiting rod 4.04 and a bottom cover 4.05; an upper pawl 4.06 and a lower pawl 4.07 are arranged on the pawl shaft 4.01 along the axial direction; the upper pawl 4.06 and the lower pawl 4.07 have opposite directions and are connected with a pawl mounting hole of the pawl shaft 4.01 through a first spring 4.08; the pawl shaft sleeve 4.02 is connected with the chassis 3, a first special-shaped shaft hole 4.09 formed by sequentially connecting and enclosing a plurality of first arc-shaped grooves is arranged, and a plurality of connecting columns 4.10 are arranged at the bottom end; the inner diameter of the first special-shaped shaft hole 4.09 is matched with the diameter of the pawl shaft 4.01; the upper profiling limiting rod 4.03 and the lower profiling limiting rod 4.04 both comprise a connecting rod 4.11, and a connecting sleeve 4.12 and a limiting wheel 4.13 which are arranged at two ends of the connecting rod 4.11; the connecting sleeve 4.12 is provided with a second special-shaped shaft hole 4.14 which is formed by connecting and enclosing a plurality of second arc-shaped grooves in sequence; the inner diameter of the second special-shaped shaft hole 4.14 is matched with the diameter of a cylindrical space formed by the surrounding of the connecting columns 4.10; the limiting wheel 4.13 is rotationally connected with the connecting rod 4.11 and is used for rolling contact with the groove on the side surface of the track; the bottom cover 4.05 is positioned below the connecting sleeve 4.12 of the lower profiling limiting rod 4.04 and is connected with the connecting column 4.10 penetrating through the second special-shaped shaft hole 4.14; the pawl shaft 4.01 can pass through the first special-shaped shaft hole 4.09 and the second special-shaped shaft hole 4.14, the upper pawl 4.06 and the lower pawl 4.07 can abut against the first arc-shaped groove or the second arc-shaped groove (the upper pawl 4.06 and the lower pawl 4.07 can be compressed by the first arc-shaped groove or the second arc-shaped groove, the pawl shaft 4.01 and the first special-shaped shaft hole 4.09 or the second special-shaped shaft hole 4.14 can rotate relatively), the corresponding second arc-shaped grooves of the upper copying limiting rod 4.03 and the lower copying limiting rod 4.04 slide over the claw backs of the upper pawl 4.06 and the lower pawl 4.07 respectively and apply force to the claw backs when rotating towards the inner side of the track 100, and the corresponding second arc-shaped grooves are clamped on the upper pawl 4.06 and the lower pawl 4.07 respectively when rotating towards the inner side of the track 100.
The multifunctional operation ladder car is provided with the end part anti-tipping device 4 on the chassis 3, when the ladder car stops, the bottom end of the pawl shaft 4.01 is abutted against the bottom cover 4.05, the upper pawl 4.06 and the lower pawl 4.07 penetrate through the gap between two adjacent connecting columns 4.10 and are abutted against the second arc-shaped groove, because the upper pawl 4.06 and the lower pawl 4.07 have opposite directions, the pawl shaft 4.01 cannot rotate in the first special-shaped shaft hole 4.09, according to the principle of unidirectional motion of the ratchet mechanism, when the upper profiling limiting rod 4.03 and the lower profiling limiting rod 4.04 rotate towards the outer side of the track 100, the corresponding second arc-shaped grooves respectively slide over the back of the pawl of the upper pawl 4.06 and the lower pawl 4.07 and apply force to the back of the pawl, the upper pawl 4.06 and the lower pawl 4.07 are pressed to be contracted towards the mounting hole of the pawl, the connecting sleeve 4.12 can smoothly rotate, when the upper profiling limiting rod 4.03 and the lower limiting rod 4.04 rotate towards the inner side of the track 100, the corresponding second arc-shaped groove and the lower pawl 4.06 are respectively clamped on the upper pawl 4.07, the connecting sleeve 4.12 can not rotate, so that the unidirectional expansion and locking of the upper profiling limiting rod 4.03 and the lower profiling limiting rod 4.04 are realized until the limiting wheel 4.13 is clamped in the groove on the side surface of the track, and the ladder car can be prevented from toppling forwards or backwards; when the ladder car travels, the pawl shaft 4.01 is lifted upwards to the first special-shaped shaft hole 4.09, the upper profiling limiting rod 4.03 and the lower profiling limiting rod 4.04 can rotate towards the inner side of the track 100, and the limiting wheels 4.13 cannot interfere with the track 100.
Furthermore, the inner side and/or the outer side of the chassis 3 are/is provided with a pawl shaft sleeve installation groove 3.02, and the end part anti-tilt device 4 can be selectively installed on the inner side or the outer side of the chassis 3 according to the actual situation of the rail where the ladder car is located; an L-shaped shaft sleeve insertion plate 4.15 is arranged on the pawl shaft sleeve 4.02; the vertical plate of the shaft sleeve insertion plate 4.15 is inserted in the pawl shaft sleeve mounting groove 3.02, and the transverse plate is abutted against the pawl shaft sleeve mounting groove 3.02, so that the detachable connection of the end part anti-tipping device 4 and the chassis 3 is realized.
Further, in order to facilitate the insertion and the pulling of the pawl shaft 4.01, the tip of the pawl shaft 4.01 is provided with a mounting knob.
Further, the bottom cover 4.05 is connected with the connecting column 4.10 through bolts.
Further, the number of the upper pawls 4.06 and the lower pawls 4.07 is two, two upper pawls 4.06 are arranged along the diameter of the pawl shaft 4.01, and two lower pawls 4.07 are arranged along the diameter of the pawl shaft 4.01.
Furthermore, the multifunctional operation ladder car also comprises brake and lateral anti-tipping devices 5 which are arranged on two sides of the chassis 3; the brake and lateral overturn preventing device 5 comprises a connecting frame, a rotating plate 5.01, a limiting frame and a bidirectional ratchet lock structure; the connecting frame comprises a chassis connecting frame used for being connected with the chassis 3 and two upper connecting plates 5.02 oppositely arranged on the bottom surface of the chassis connecting frame; the limiting frame comprises a limiting plate 5.03 clamped on the lower surface of the track and two lower connecting plates 5.04 oppositely arranged on the limiting plate 5.03; shaft holes are formed in the upper connecting plate 5.02 and the lower connecting plate 5.04; two ends of the rotating plate 5.01 are provided with shaft sleeves; the bidirectional ratchet lock structure comprises a rotating shaft 5.05, an end cover 5.06 and a non-return pawl 5.07; the rotating shaft 5.05 is fixedly arranged in the shaft sleeve in a penetrating mode, two ends of the rotating shaft penetrate through the shaft holes, ratchets 5.08 in opposite directions are arranged on the circumferential surfaces of the two ends, and end cover mounting holes are formed in the axial end faces of the two ends; the end cover 5.06 is fixed at the outer sides of the upper connecting plate 5.02 and the lower connecting plate 5.04 and is in running fit with the end cover mounting hole of the rotating shaft 5.05; the non-return pawl 5.07 is rotatably arranged on the inner side of the end cover 5.06 and is used for preventing the ratchets 5.08 at the two ends of the rotating shaft 5.06 from reversely rotating.
When the ladder car reaches a designated position and needs to be locked, the non-return pawl 5.07 is rotated to be separated from the ratchets 5.08 at the two ends of the rotating shaft 5.06, the rotating plate 5.01 and the limiting frame can be pulled at the moment until the limiting plate 5.03 is tightly clamped on the lower surface of the track, the non-return pawl 5.07 is rotated to be inserted into the tooth socket of the ratchets 5.08, the non-return pawls 5.07 on the end covers 5.06 at the two sides can prevent the corresponding ratchets 5.08 from reversely rotating due to the fact that the directions of the ratchets 5.08 at the two ends of the rotating shaft 5.06 are opposite, the rotating shaft 5.06 is locked and cannot rotate clockwise or anticlockwise, and the positions of the connecting frame, the rotating plate 5.01 and the limiting frame are fixed, so that the brake of the ladder car can be prevented from being turned over laterally.
Furthermore, a clamping groove 3.03 is arranged on the chassis 3, a vertical threaded rod mounting groove 3.04 is arranged on the inner side and/or the outer side of the chassis 3, and a brake and lateral anti-overturning device 5 can be selectively mounted on the inner side or the outer side of the chassis 3 according to the actual situation of the rail where the ladder car is located; the chassis connecting frame comprises a T-shaped frame 5.09, an L-shaped clamping plate 5.10 and a threaded sleeve handle 5.11; the T-shaped frame 5.09 comprises a transverse plate connected with the two upper connecting plates 5.02 and a vertical threaded rod penetrating through the vertical threaded rod mounting groove 3.04; the vertical plate of the L-shaped clamping plate 5.10 is inserted in the clamping groove 3.03, and the transverse plate passes through the vertical threaded rod and abuts against the vertical threaded rod mounting groove 3.04; the threaded sleeve handle 5.11 is in threaded connection with the vertical threaded rod and is located above the L-shaped clamping plate 5.10. The chassis 3 and the brake and lateral overturn prevention device 5 can be detachably connected through the matching of the clamping groove 3.03 and the L-shaped clamping plate 5.10, the positions of the limiting plates 5.03 and the lower surface of the rail can be adjusted according to the highly-rotating threaded sleeve handle 5.11 of the rail 100, and the limiting plates 5.03 can be clamped on the lower surface of the rail.
Furthermore, in order to rotate the check pawl 5.07, an L-shaped rotating handle 5.12 is rotatably arranged on the end cover 5.06 in a penetrating mode, and the check pawl 5.07 is inserted into the rotating handle 5.12.
Further, pivot 5.05 and axle sleeve realize fixed connection through spacing groove and stopper cooperation, prevent to take place relative rotation.
Furthermore, ratchets 5.08 can be obtained by directly fixing ratchets at two ends of the rotating shaft 5.05.
Further, the support frame 2 comprises two telescopic ladders which are oppositely arranged; the telescopic ladder comprises a plurality of ladder frames and a limiting device; the ladder frame comprises two vertical rods 2.01 which are oppositely arranged and a cross beam 2.12 which connects the two vertical rods 2.01, the vertical rod 2.01 of the upper ladder frame in the two adjacent ladder frames is inserted into the vertical rod 2.01 of the lower ladder frame, the vertical rod 2.01 of the upper ladder frame is provided with a ratchet bar 2.02, the vertical rod 2.01 of the lower ladder frame is provided with a jack, the vertical rod 2.01 of the lowermost ladder frame is connected with the chassis 3, and the ladder frame positioned at the uppermost position is connected with the working platform 1; the teeth of the ratchet bar 2.02 face upwards; the limiting device comprises two pawl mounting blocks 2.03, a limiting pawl 2.04 rotatably mounted on the pawl mounting block 2.03, a force application handle 2.05 connected with the two pawl mounting blocks 2.03 and a positioning frame 2.06 arranged between the two pawl mounting blocks 2.03; the positioning frame 2.06 is sleeved on the cross beam 2.12 of the ladder frame, and two ends of the second spring 2.07 are respectively connected with the positioning frame 2.06 and the cross beam 2.12; the limiting pawl 2.04 penetrates through the jack of the vertical rod 2.01 to be matched with the ratchet bar 2.02, the claw web faces upwards, a torsion spring 2.08 is arranged between the claw web and the pawl mounting block 2.03, and a pawl limiting plate 2.13 is arranged below the claw back.
When the ladder frame extends out, the tooth back of the ratchet bar 2.02 slides over the claw back of the limiting pawl 2.04 and applies force to the claw back of the limiting pawl 2.04, the limiting pawl 2.04 turns upwards, after the upward moving acting force is removed, the limiting pawl 2.04 resets under the action of the torsion spring 2.08 and is clamped in the tooth groove of the ratchet bar 2.02, the limiting pawl 2.04 cannot turn downwards under the blocking action of the pawl limiting plate 2.13, the ladder frame is locked, and the construction safety is greatly improved; when the ladder frame is retracted, the force application handle 2.05 is pulled to enable the limiting pawl 2.04 to be disengaged from the jack, the ladder frame is pressed down one by one until the ladder frame reaches the limiting position, the force application handle 2.05 is released, and the limiting pawl 2.04 is inserted into the jack again under the elastic force of the second spring 2.07; the extension ladder can adjust the extending height of the ladder car according to the individual height of an operator, and is convenient in adjustment mode and good in safety.
Further, the ladder frame is made of aluminum alloy materials, and the side parts of the ladder frame are made into hollow structures to reduce weight. The ratchet bar 2.02 is fixed on the vertical rod by a rivet.
Further, the quantity of posting 2.06 is two, sets up in the handing-over department of the vertical pole 2.01 and the crossbeam 2.12 of ladder frame, and posting 2.06 includes two spill sheet frame structures, and the horizontal board overlap joint of two spill sheet frame structures just passes through bolt fastening to installation and dismantlement.
Furthermore, the limiting pawl 2.04 is rotatably installed on the pawl installation block 2.03 through a pin shaft and a cotter pin.
Furthermore, the top ends of the two vertical rods of the uppermost ladder frame are provided with connecting beams 2.09; in two extension ladders, what tie-beam 2.09 and work platform 1 passed through locking screw 2.10 fixed connection is fixed extension ladder, and tie-beam 2.09 and work platform 1 are through first linear bearing 2.11 sliding connection be the slip extension ladder. Because of two extension ladders and chassis 3, work platform 1 constitute the trapezium structure, this embodiment is when adjustment ladder frame height, through the first straight-line bearing 2.11 under the work platform 1, the angle of synchronous adjustment extension ladder reaches the purpose of stretching smoothly and shrink to make the ladder that contracts support all the time at work platform 1 both ends, guarantee work platform 1's stability. The locking screw rod 2.10 penetrates through the connecting beam 2.09 of the fixed telescopic ladder to be in threaded connection with the working platform 1.
Further, the working platform 1 comprises a fixed platform 1.01, a sliding platform 1.02 and a positioning pin 1.03; the fixed platform 1.01 is a hollow concave structure, and a first positioning hole is formed in the bottom plate on the inner side; the sliding platforms 1.02 are inserted at two ends of the fixed platform 1.01, and the bottom surfaces are provided with second positioning holes; the positioning pin 1.03 passes through the first positioning hole and the second positioning hole. In this embodiment, the number of first locating holes is four, and the distribution is on four angles of fixed platform 1.01, and a plurality of second locating holes that every first locating hole corresponds, every first locating hole and a plurality of second locating holes pass through locating pin 1.03 to be connected, and the similar quantity that can establish the second locating hole is four, and every second locating hole corresponds a plurality of first locating holes.
Further, the fixed platform 1.01 and the sliding platform 1.02 are connected through a second linear bearing 1.04 to reduce the friction force during sliding.
Further, the sliding platform 1.02 comprises a bottom plate, a bracket arranged on the bottom plate, and a protective net enclosed on the bracket. The bottom plate and the support are made of aluminum alloy materials, and the protective net is a nylon net.
Further, the chassis 3 includes a first tray body and a second tray body; an inserting groove 3.05 is formed in the end portion of the first tray body, and a limiting hole is formed in the side wall of the inserting groove 3.05; the tip of second disk body is provided with the bayonet joint 3.06 with inserting groove 3.05 complex, and the side of bayonet joint 3.06 is provided with the stopper mounting groove, and stopper 3.07 is connected with the stopper mounting groove through third spring 3.08, and stopper 3.07 and spacing hole cooperation. During installation, the plug connector 3.06 is inserted into the plug groove 3.05, the side wall of the plug groove 3.05 extrudes the limiting block 3.07, the third spring 3.08 compresses, when the limiting block 3.07 reaches the limiting hole, the limiting block 3.07 is popped out and clamped in the limiting hole, and the first tray body and the second tray body are assembled.
Further, ladder frame mounting bases 3.09 are arranged on the first tray body and the second tray body; the vertical rod 2.01 of the lowermost ladder frame is spliced with the ladder frame mounting base 3.09.
Further, the pawl shaft sleeve mounting groove 3.02 and the vertical threaded rod mounting groove 3.04 are enclosed by plates arranged on the chassis 3.
In this embodiment, the upper pawl 4.06, the lower pawl 4.07, the non-return pawl 5.07, the ratchet 5.08, the ratchet bar 2.02 and the limit pawl 2.04 are present in relation to the ratchet pawl structure, and the pawl back, pawl flank, tooth back and tooth flank are defined as follows, with reference to the relevant parameters of the teeth in the ratchet, as shown in fig. 20, with the roots of the teeth or pawls placed on a circle, with 201 being the tooth back or pawl back, and 202 being the tooth flank or pawl flank.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A multifunctional operation ladder vehicle is characterized by comprising a working platform, a support frame, a chassis and end anti-tipping devices arranged at two ends of the chassis;
the working platform is arranged at the top end of the support frame;
the chassis is arranged at the bottom end of the support frame, and track wheels for walking on the track are arranged on the chassis;
the end part anti-tipping device comprises a pawl shaft, a pawl shaft sleeve, an upper profiling limiting rod, a lower profiling limiting rod and a bottom cover;
an upper pawl and a lower pawl are arranged on the pawl shaft along the axial direction;
the upper pawl and the lower pawl are opposite in direction and are connected with a pawl mounting hole of the pawl shaft through a first spring;
the pawl shaft sleeve is connected with the chassis and provided with a first special-shaped shaft hole which is formed by sequentially connecting and enclosing a plurality of first arc-shaped grooves, and the bottom end of the pawl shaft sleeve is provided with a plurality of connecting columns;
the inner diameter of the first special-shaped shaft hole is matched with the diameter of the pawl shaft;
the upper profiling limiting rod and the lower profiling limiting rod respectively comprise a connecting rod, and a connecting sleeve and a limiting wheel which are arranged at two ends of the connecting rod;
the connecting sleeve is provided with a second special-shaped shaft hole which is formed by sequentially connecting and enclosing a plurality of second arc-shaped grooves;
the inner diameter of the second special-shaped shaft hole is matched with the diameter of a cylindrical space formed by the plurality of connecting columns in a surrounding manner;
the limiting wheel is rotatably connected with the connecting rod and is used for rolling contact with the groove on the side surface of the track;
the bottom cover is positioned below the connecting sleeve of the lower profiling limiting rod and is connected with the connecting column penetrating through the second special-shaped shaft hole;
the pawl shaft can pass through a first special-shaped shaft hole and a second special-shaped shaft hole, the upper pawl and the lower pawl can abut against the first arc-shaped groove or the second arc-shaped groove, the second arc-shaped grooves corresponding to the upper copying limiting rod and the lower copying limiting rod respectively slide over the claw backs of the upper pawl and the lower pawl and apply force to the claw backs when the upper copying limiting rod and the lower copying limiting rod rotate towards the outer side of the track, and the second arc-shaped grooves corresponding to the lower copying limiting rod rotate towards the inner side of the track are respectively clamped on the upper pawl and the lower pawl.
2. The multi-purpose working ladder of claim 1, wherein a ratchet sleeve mounting groove is provided at an inner side and/or an outer side of the chassis;
an L-shaped shaft sleeve insertion plate is arranged on the pawl shaft sleeve;
the vertical plate of the shaft sleeve insertion plate is inserted in the pawl shaft sleeve mounting groove, and the transverse plate abuts against the pawl shaft sleeve mounting groove.
3. The multi-function working ladder of claim 2, further comprising braking and side anti-tipping devices provided at both sides of the chassis;
the brake and lateral overturn-preventing device comprises a connecting frame, a rotating plate, a limiting frame and a bidirectional ratchet lock structure;
the connecting frame comprises a chassis connecting frame used for being connected with the chassis and two upper connecting plates oppositely arranged on the bottom surface of the chassis connecting frame;
the limiting frame comprises a limiting plate clamped on the lower surface of the track and two lower connecting plates oppositely arranged on the limiting plate;
shaft holes are formed in the upper connecting plate and the lower connecting plate;
shaft sleeves are arranged at two ends of the rotating plate;
the bidirectional ratchet lock structure comprises a rotating shaft, an end cover and a non-return pawl;
the rotating shaft is fixedly arranged in the shaft sleeve in a penetrating mode, two ends of the rotating shaft penetrate through the shaft holes, ratchets in opposite directions are arranged on the circumferential surfaces of the two ends of the rotating shaft, and end cover mounting holes are formed in the axial end surfaces of the two ends of the rotating shaft;
the end covers are fixed on the outer sides of the upper connecting plate and the lower connecting plate and are in rotating fit with the end cover mounting holes of the rotating shaft;
the non-return pawl is rotatably arranged on the inner side of the end cover and used for preventing ratchets at two ends of the rotating shaft from reversely rotating.
4. The multifunctional operation ladder vehicle as claimed in claim 3, wherein a clamping groove is provided on the chassis, and a vertical threaded rod mounting groove is provided on the inner side and/or outer side of the chassis;
the chassis connecting frame comprises a T-shaped frame, an L-shaped clamping plate and a threaded sleeve handle;
the T-shaped frame comprises a transverse plate connected with the two upper connecting plates and a vertical threaded rod penetrating through the vertical threaded rod mounting groove;
the vertical plate of the L-shaped clamping plate is inserted in the clamping groove, and the transverse plate passes through the vertical threaded rod and abuts against the vertical threaded rod mounting groove;
threaded sleeve handle threaded connection just is located the top of L shape cardboard on vertical threaded rod.
5. The multi-function working ladder vehicle as claimed in claim 4, wherein the support frame comprises two extension ladders oppositely disposed;
the telescopic ladder comprises a plurality of ladder frames and a limiting device;
the ladder frame comprises two vertical rods which are oppositely arranged and a cross beam which is connected with the two vertical rods, the vertical rod of the upper ladder frame in the two adjacent ladder frames is inserted into the vertical rod of the lower ladder frame, the vertical rod of the upper ladder frame is provided with a ratchet bar, the vertical rod of the lower ladder frame is provided with a jack, the vertical rod of the lowermost ladder frame is connected with the chassis, and the ladder frame at the uppermost position is connected with the working platform;
the teeth of the ratchet bar face upwards;
the limiting device comprises two pawl mounting blocks, a limiting pawl rotatably mounted on the pawl mounting blocks, a force application handle connected with the two pawl mounting blocks and a positioning frame arranged between the two pawl mounting blocks;
the positioning frame is sleeved on a cross beam of the ladder frame, and two ends of the second spring are respectively connected with the positioning frame and the cross beam;
the limiting pawl penetrates through the jack to be matched with the ratchet bar, the claw web faces upwards, a torsion spring is arranged between the claw web and the pawl mounting block, and a pawl limiting plate is arranged below the claw back.
6. The multi-functional working ladder vehicle of claim 5, wherein the top ends of the two vertical bars of the uppermost ladder frame are provided with a connection beam;
in the two extension ladders, the connecting beam and the working platform are fixedly connected through the locking screw rod and are fixed extension ladders, and the connecting beam and the working platform are connected through the first linear bearing in a sliding mode and are sliding extension ladders.
7. The multi-function working ladder of claim 6, wherein the working platform includes a fixed platform, a sliding platform, and a locating pin;
the fixed platform is of a hollow concave structure, and a first positioning hole is formed in the bottom plate on the inner side;
the sliding platforms are inserted at two ends of the fixed platform, and the bottom surfaces of the sliding platforms are provided with second positioning holes;
the positioning pin penetrates through the first positioning hole and the second positioning hole.
8. The multi-function work ladder of claim 5 wherein the chassis includes a first tray and a second tray;
an inserting groove is formed in the end portion of the first tray body, and a limiting hole is formed in the side wall of the inserting groove;
the tip of second disk body be provided with inserting groove complex bayonet joint, the side of bayonet joint is provided with the stopper mounting groove, the stopper passes through the third spring to be connected with the stopper mounting groove, and stopper and spacing hole cooperation.
9. The multi-function working ladder vehicle of claim 8 wherein ladder mounting bases are provided on both the first tray and the second tray;
the vertical rod of the ladder frame positioned at the lowest part is spliced with the ladder frame mounting base.
10. The multi-function working ladder of claim 4, wherein the pawl collar mounting slot and the vertical threaded rod mounting slot are enclosed by a plate disposed on the chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010354156.5A CN111520064B (en) | 2020-04-29 | 2020-04-29 | Multifunctional operation ladder vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010354156.5A CN111520064B (en) | 2020-04-29 | 2020-04-29 | Multifunctional operation ladder vehicle |
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| Publication Number | Publication Date |
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| CN111520064A CN111520064A (en) | 2020-08-11 |
| CN111520064B true CN111520064B (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010354156.5A Active CN111520064B (en) | 2020-04-29 | 2020-04-29 | Multifunctional operation ladder vehicle |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267481B (en) * | 2020-10-22 | 2022-02-18 | 郑州大学 | Steel cofferdam lowering construction method |
| CN114837078A (en) * | 2022-04-27 | 2022-08-02 | 安徽省定军建设工程有限公司 | Automatic maintenance vehicle for high-speed rail bridge deck system |
| CN115045605B (en) * | 2022-05-10 | 2023-05-02 | 中铁建电气化局集团南方工程有限公司 | Rail walking construction maintenance ladder car with brake equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB696774A (en) * | 1949-12-16 | 1953-09-09 | Entpr Jardin & Billiard | Demountable hoisting apparatus for loading and unloading rails on and from railway vehicles |
| CN2125685U (en) * | 1992-05-07 | 1992-12-23 | 上海市群英五金厂 | Cyclotron connecting mechanism for stressed truss structure |
| KR0159000B1 (en) * | 1995-01-11 | 1999-01-15 | 나사균 | Ladder for work of switchboard m.d.f. |
| CN109263666A (en) * | 2018-10-11 | 2019-01-25 | 常熟市谷雷特机械产品设计有限公司 | A kind of practical railway handcart |
| CN210416554U (en) * | 2019-07-30 | 2020-04-28 | 中国铁路北京局集团有限公司唐山供电段 | Anti-tilting hook device for electrified railway contact network maintenance ladder car |
-
2020
- 2020-04-29 CN CN202010354156.5A patent/CN111520064B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB696774A (en) * | 1949-12-16 | 1953-09-09 | Entpr Jardin & Billiard | Demountable hoisting apparatus for loading and unloading rails on and from railway vehicles |
| CN2125685U (en) * | 1992-05-07 | 1992-12-23 | 上海市群英五金厂 | Cyclotron connecting mechanism for stressed truss structure |
| KR0159000B1 (en) * | 1995-01-11 | 1999-01-15 | 나사균 | Ladder for work of switchboard m.d.f. |
| CN109263666A (en) * | 2018-10-11 | 2019-01-25 | 常熟市谷雷特机械产品设计有限公司 | A kind of practical railway handcart |
| CN210416554U (en) * | 2019-07-30 | 2020-04-28 | 中国铁路北京局集团有限公司唐山供电段 | Anti-tilting hook device for electrified railway contact network maintenance ladder car |
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|---|---|
| CN111520064A (en) | 2020-08-11 |
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