CN113845040A

CN113845040A - Dolly for double-beam portal crane capable of preventing gnawing rail

Info

Publication number: CN113845040A
Application number: CN202110881030.8A
Authority: CN
Inventors: 梁大伟
Original assignee: Hefei Chunhua Hoisting Machinery Co Ltd
Current assignee: Hefei Chunhua Hoisting Machinery Co Ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2021-12-28

Abstract

The invention discloses a rail-gnawing-preventing trolley for a double-beam portal crane, which comprises two main beams which are symmetrically distributed, wherein a supporting table is fixed between the two main beams, two ends of the supporting table are respectively fixed with two supporting frames, and two sliding rails which are symmetrically distributed are fixed on the upper surface of the supporting table. Through buffer gear's setting, make the travelling car at first strike the buffer board, offset partly through buffer spring to the impact force, buffer spring will do all can the power and transmit for the connecting rod to transmit for the piston through the buffer lever, make the piston slide in the buffering intracavity, further unload the power to the piston through the air in the buffering intracavity, thereby make the impact that the travelling car received significantly reduce, improve the stability and the life of travelling car, guarantee the security that the hoist used.

Description

Dolly for double-beam portal crane capable of preventing gnawing rail

Technical Field

The invention relates to the technical field of hoisting equipment, in particular to a rail gnawing preventing trolley for a double-beam portal crane.

Background

The phenomenon that the crane gnaws the rail refers to that the rim and the side surface of the rail are seriously extruded in the running process of a bridge crane cart or trolley, so that side thrust is generated, and friction and abrasion between the rim and the rail are caused, and the phenomenon is generally called gnawing the rail. In normal operation, a certain gap is kept between the wheel rim and the side surface of the track, and rail gnawing is a result generated after the wheel rim and the track run obliquely relatively to a certain degree.

The phenomenon of rail gnawing takes various forms: the single wheel gnaws the rail, the many rounds gnaws the rail, the homonymy gnaws the rail, the heteropolarity gnaws the rail, sometimes even the traffic direction is different, gnaws the form of the rail also different.

When the existing trolley for the double-beam portal crane is used, abrasion between a hub and a track is easily caused by rail gnawing, so that the running power of the crane is improved, and the working cost is increased; the existing double-beam portal crane easily collides the supporting frames on two sides when running, so that the service life of the trolley is shortened.

In order to solve the above-mentioned drawbacks, a technical solution is now provided.

Disclosure of Invention

The invention aims to provide a trolley for a double-beam portal crane, which is used for preventing gnawing of rails.

The technical problems to be solved by the invention are as follows:

The purpose of the invention can be realized by the following technical scheme:

a rail-gnawing-preventing trolley for a double-beam portal crane comprises two symmetrically-distributed main beams, wherein a support table is fixed between the two main beams, two ends of the support table are respectively fixed with two support frames, two symmetrically-distributed slide rails are fixed on the upper surface of the support table, a first working groove is formed in the position, close to the middle, of the upper surface of the support table, the bottom of the first working groove penetrates through and extends to the lower surface of the support table, a movable trolley is arranged above the slide rails, a second working groove is formed in the center of the upper surface of the movable trolley, the bottom of the second working groove penetrates through and extends to the lower surface of the movable trolley, and the second working groove is located right above the first working groove;

the two ends of the upper surface of the supporting table are provided with symmetrically distributed buffer mechanisms, each buffer mechanism comprises a buffer chamber, and the outer bottom end of each buffer chamber is fixed with the upper surface of the supporting table;

the utility model discloses a winding device, including travelling car, supporting seat, dwang, supporting seat, winding shaft, wind-up roll, lifting rope, first work groove and second work groove are just located a supporting bench's below is passed to the one end that the winding roll was kept away from to the lifting rope, the upper surface of travelling car is close to the position of front end and is equipped with winding mechanism, winding mechanism includes the supporting seat of two symmetric distributions, the bottom of supporting seat is fixed mutually with travelling car's upper surface, two the one end that the supporting seat is close to each other all rotates and is connected with the dwang, the one end that the supporting seat was kept away from to the dwang is fixed with the limiting plate, be equipped with the wind-up roll between the limiting plate, the external fixed surface of wind-up roll has the wind-up roll, the outside winding of wind-up roll has the lifting rope, the one end that the wind-up roll was kept away from to the lifting rope passes first work groove and second work groove and is located a supporting bench's below, the couple is installed to the bottom of lifting rope.

Further, two the one end that the girder kept away from each other all is fixed with the support frame of symmetric distribution, the top of girder is equipped with the railing, it is fixed mutually through a plurality of evenly distributed's bracing piece between railing and the girder, two the bottom of girder all is fixed with the supporting leg of two symmetric distributions, the removal wheel is installed to the bottom of supporting leg.

Further, the inside both sides wall of cushion chamber is fixed with a plurality of evenly distributed's cushion chamber, the inside of cushion chamber is equipped with the piston, the piston contacts and sliding connection with the inner wall of cushion chamber, one side that the piston is close to the travelling car is fixed with the buffer beam, the one end that the piston was kept away from to the buffer beam passes cushion chamber and with cushion chamber and cushion chamber sliding connection, the one end that the piston was kept away from to the buffer beam is fixed with the connecting rod, the one end that the buffer beam was kept away from to the connecting rod is equipped with the buffer board, be fixed with a plurality of evenly distributed's buffer spring between buffer board and the connecting rod.

Further, the outer surface both ends of rolling axle all are fixed with the elasticity fixture block of two symmetric distributions, the material of elasticity fixture block is elastic metal, the mounting groove with rolling axle looks adaptation is seted up to one side that the limiting plate is close to the rolling axle, the draw-in groove of symmetric distribution is seted up to the inside top and the bottom of mounting groove, draw-in groove and elasticity fixture block looks adaptation.

Further, one of them the inside wall of supporting seat is fixed with the rolling motor, the output of rolling motor passes the supporting seat and is fixed with drive pulley, one of them the limiting plate was kept away from to the dwang one end passes the supporting seat and is fixed with driven pulley, install drive belt between drive pulley and the driven pulley.

Further, a fixed plate is fixed at the bottom of the slide rail, the fixed plate is fixed with the support table through a bolt, a trolley hub is installed at the bottom of the moving trolley, and the top of the slide rail is connected with the bottom of the trolley hub in a sliding mode.

Further, the bottom of travelling car is equipped with the lubricated mechanism of symmetric distribution, lubricated mechanism is located the slide rail directly over, lubricated mechanism includes lubricated room, and emollient has been placed to the inside of lubricated room, the outside top of lubricated room is fixed with the bottom of travelling car mutually, an outside lateral wall of lubricated room is fixed with lubricated motor, the output of lubricated motor is fixed with the threaded rod, the one end that lubricated motor was kept away from to the threaded rod passes lubricated room and rotates with lubricated room to be connected, sealed lid has been cup jointed in the outside of threaded rod, sealed lid and threaded rod threaded connection, the bottom of sealed lid and the inside bottom sliding connection of lubricated room.

Furthermore, an oil outlet penetrates through the bottom of the lubricating chamber and is located right below the sealing cover, sliding rods are fixed to two side walls inside the lubricating chamber, a sliding block is fixed to the top of the sealing cover, and the sliding block is connected with the sliding rods in a sliding mode.

Further, the working method of the rail gnawing prevention trolley for the double-beam portal crane comprises the following steps:

firstly, moving a crane to a designated working place through a moving wheel, placing a heavy object on a hook, starting a winding motor, driving an output end of the winding motor to drive a driving pulley to rotate, matching a transmission belt to drive a driven pulley to rotate, driving one of rotating rods to rotate by the driven pulley, matching another rotating rod to drive a winding shaft to rotate, driving a winding roller to rotate by the winding shaft, and matching a lifting rope with the winding roller to lift the heavy object;

secondly, driving the movable trolley to slide on the slide rail, when the movable trolley moves to the tail end of the slide rail, firstly, the movable trolley collides with the buffer plate, after a part of force is counteracted through the buffering of the buffer spring, the buffer spring transmits the force to the connecting rod, the connecting rod is matched with the buffer rod to transmit the force to the piston, so that the piston slides in the buffer cavity, and the air in the buffer cavity further unloads the force to the piston;

and thirdly, when a trolley hub of the moving trolley rubs with the slide rail for a long time, the slide rail is easy to wear to cause rail gnawing, a lubricating motor is started to drive the output end of the lubricating motor to drive the threaded rod to rotate, the threaded rod is connected with the two sealing covers through threads, the sliding block is matched to slide on the slide rod to drive the two sealing covers to slide at the bottom end inside the lubricating chamber, so that the oil outlet is opened, the lubricating agent falls on the slide rail from the lower part of the oil outlet, and automatic lubricating operation is realized.

The invention has the beneficial effects that:

according to the winding mechanism, the winding shaft is arranged in the mounting groove by arranging the mounting groove, so that the winding mechanism is convenient to disassemble and assemble, the winding mechanism is more flexible to use, and the elastic clamping block and the clamping groove are arranged to ensure that the winding mechanism is more stable to install. The driving belt pulley is driven to rotate by the winding motor, the rotating rod is driven to rotate by the aid of the transmission belt, and the rotating rod drives the winding shaft to rotate and cooperate with the lifting rope to complete lifting work. Firstly, the crane moves to a designated working place through a moving wheel, a heavy object is placed on a hook, a winding motor is started to drive an output end of the winding motor to drive a driving belt pulley to rotate, a transmission belt is matched to drive a driven belt pulley to rotate, the driven belt pulley drives one of rotating rods to rotate, the other rotating rod is matched to drive a winding shaft to rotate, the winding shaft drives a winding roller to rotate, and the winding roller is matched with a lifting rope to lift the heavy object;

when the travelling car moves on the slide rail, can collide with the support frame at the end of slide rail mutually, setting through buffer gear, make the travelling car at first strike the buffer board, offset partly through buffer spring to the impact force, buffer spring will do all can the power and transmit for the connecting rod, and transmit for the piston through the buffer rod, make the piston slide in the buffer cavity, further unload the power to the piston through the air in the buffer cavity, thereby the impact force that makes the travelling car receive significantly reduces, improve the stability and the life of travelling car, guarantee the security that the hoist used. The movable trolley is driven to slide on the sliding rail, when the movable trolley moves to the tail end of the sliding rail, the movable trolley firstly collides with the buffer plate, after a part of force is counteracted through the buffering of the buffer spring, the buffer spring transmits the force to the connecting rod, the connecting rod is matched with the buffer rod to transmit the force to the piston, the piston slides in the buffer cavity, and the air in the buffer cavity further unloads the force to the piston.

Through the setting of lubricated mechanism, make the slip between slide rail and the dolly wheel hub more smooth and easy, reduce the wearing and tearing between guide rail and the wheel, effectively prevent to gnaw the emergence of rail, also can in time carry out lubricated operations such as burring to the track after the rail is gnawed in the production simultaneously, reduce the friction because of gnawing the rail and bring, reduce the resistance simultaneously, reduce the operation consumption of hoist, practice thrift the cost. When a trolley hub of the moving trolley rubs with the slide rail for a long time, the slide rail is easy to wear to cause gnawing of the rail, the lubricating motor is started to drive the output end of the lubricating motor to drive the threaded rod to rotate, the sliding block slides on the slide rod in a matched mode through threaded connection of the threaded rod and the two sealing covers, the two sealing covers are driven to slide at the bottom end inside the lubricating chamber, and therefore the oil outlet is opened, lubricating agents fall on the slide rail from the lower portion of the oil outlet, and automatic lubricating operation is achieved.

Drawings

The invention is described in further detail below with reference to the figures and specific embodiments.

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

FIG. 2 is a top plan view of the overall structure of the present invention;

FIG. 3 is a schematic view of the structure of the cushioning mechanism of the present invention;

FIG. 4 is a top view of the winding mechanism of the present invention;

FIG. 5 is a schematic view of the construction of a wind-up reel of the present invention;

fig. 6 is a side view of a limiting plate of the invention;

FIG. 7 is a schematic structural view of the slide rail of the present invention;

fig. 8 is a schematic structural view of the lubricating mechanism of the present invention.

In the figure, 1, a main beam; 11. a support frame; 12. a railing; 13. supporting legs; 14. a moving wheel; 15. a support table; 16. a slide rail; 161. a fixing plate; 17. moving the trolley; 171. a dolly hub; 2. a buffer mechanism; 201. a buffer chamber; 202. a buffer chamber; 203. a piston; 204. a buffer rod; 205. a connecting rod; 206. a buffer plate; 207. a buffer spring; 3. a winding mechanism; 301. a supporting seat; 302. rotating the rod; 303. a limiting plate; 304. a winding shaft; 305. a wind-up roll; 306. an elastic clamping block; 307. mounting grooves; 308. a card slot; 309. a winding motor; 310. a drive pulley; 311. a driven pulley; 312. a drive belt; 313. a lifting rope; 314. hooking; 4. a lubrication mechanism; 401. a lubrication chamber; 402. lubricating the motor; 403. a threaded rod; 404. a sealing cover; 405. an oil outlet; 406. a slide bar; 407. a slide block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution:

the utility model provides a prevent gnawing dolly for two roof beam gantry crane of rail, includes two symmetric distribution's girder 1, two the one end that girder 1 kept away from each other all is fixed with symmetric distribution's support frame 11, the top of girder 1 is equipped with railing 12, bracing piece through a plurality of evenly distributed is fixed mutually between railing 12 and the girder 1, two the bottom of girder 1 all is fixed with two symmetric distribution's supporting leg 13, removal wheel 14 is installed to the bottom of supporting leg 13, can remove the hoist to suitable place of operation through removing wheel 14, and application scope is higher.

A support table 15 is fixed between the two main beams 1, two ends of the support table 15 are respectively fixed with the two support frames 11, two slide rails 16 which are symmetrically distributed are fixed on the upper surface of the support table 15, a first working groove is formed in the position, close to the middle, of the upper surface of the support table 15, the bottom of the first working groove penetrates through and extends to the lower surface of the support table 15, a moving trolley 17 is arranged above the slide rails 16, a second working groove is formed in the center of the upper surface of the moving trolley 17, the bottom of the second working groove penetrates through and extends to the lower surface of the moving trolley 17, and the second working groove is located right above the first working groove;

the two ends of the upper surface of the supporting platform 15 are provided with symmetrically distributed buffer mechanisms 2, the buffer mechanisms 2 comprise buffer chambers 201, the bottom end of the outer part of the buffer chamber 201 is fixed with the upper surface of the support table 15, a plurality of buffer cavities 202 which are uniformly distributed are fixed on two side walls of the inner part of the buffer chamber 201, a piston 203 is arranged in the buffer cavity 202, the piston 203 is contacted with the inner wall of the buffer cavity 202 and is connected with the inner wall in a sliding way, a buffer rod 204 is fixed on one side of the piston 203 close to the mobile trolley 17, one end of the buffer rod 204 far away from the piston 203 penetrates through the buffer cavity 202 and the buffer chamber 201 and is connected with the buffer cavity 202 and the buffer chamber 201 in a sliding way, a connecting rod 205 is fixed at one end of the buffer rod 204 far away from the piston 203, a buffer plate 206 is arranged at one end of the connecting rod 205 far away from the buffer rod 204, a plurality of buffer springs 207 which are uniformly distributed are fixed between the buffer plate 206 and the connecting rod 205. When the movable trolley 17 moves on the slide rail 16, the movable trolley 17 collides with the support frame 11 at the tail end of the slide rail 16, through the arrangement of the buffer mechanism 2, the movable trolley 17 firstly collides with the buffer plate 206, part of the collision force is counteracted through the buffer spring 207, the buffer spring 207 transmits the force to the connecting rod 205, and transmits the force to the piston 203 through the buffer rod 204, so that the piston 203 slides in the buffer cavity 202, the piston 203 is further unloaded through the air in the buffer cavity 202, thereby the collision force received by the movable trolley 17 is greatly reduced, the stability and the service life of the movable trolley 17 are improved, and the use safety of the crane is ensured.

A winding mechanism 3 is arranged at a position, close to the front end, of the upper surface of the movable trolley 17, the winding mechanism 3 comprises two symmetrically distributed supporting seats 301, the bottom ends of the supporting seats 301 are fixed to the upper surface of the movable trolley 17, one ends, close to each other, of the two supporting seats 301 are rotatably connected with a rotating rod 302, a limiting plate 303 is fixed to one end, far away from the supporting seats 301, of the rotating rod 302, a winding shaft 304 is arranged between the two limiting plates 303, a winding roller 305 is fixed to the outer surface of the winding shaft 304, a lifting rope 313 is wound on the outer side of the winding roller 305, one end, far away from the winding roller 305, of the lifting rope 313 penetrates through a first working groove and a second working groove and is located below the supporting table 15, and a hook 314 is installed at the bottom end of the lifting rope 313;

two elastic clamping blocks 306 which are symmetrically distributed are fixed at two ends of the outer surface of the winding shaft 304, the elastic clamping blocks 306 are made of elastic metal, one side, close to the winding shaft 304, of the limiting plate 303 is provided with a mounting groove 307 matched with the winding shaft 304, the top end and the bottom end of the inside of the mounting groove 307 are provided with clamping grooves 308 which are symmetrically distributed, and the clamping grooves 308 are matched with the elastic clamping blocks 306. The winding shaft 304 is mounted in the mounting groove 307 through the mounting groove 307, so that the winding mechanism 3 is convenient to detach and mount, and the elastic fixture block 306 and the clamping groove 308 are arranged to enable the mounting to be more stable.

One of them the inside wall of supporting seat 301 is fixed with rolling motor 309, rolling motor 309's output passes supporting seat 301 and is fixed with drive pulley 310, one of them the one end that limiting plate 303 was kept away from to dwang 302 passes supporting seat 301 and is fixed with driven pulley 311, install drive belt 312 between drive pulley 310 and the driven pulley 311. The driving pulley 310 is driven to rotate by the winding motor 309, the rotating rod 302 is driven to rotate by the matching of the driving belt 312, and the rotating rod 302 drives the winding shaft 304 to rotate and match with the lifting rope 313 to complete the lifting work.

The bottom of the slide rail 16 is fixed with a fixed plate 161, the fixed plate 161 is fixed with the support table 15 through a bolt, the bottom of the movable trolley 17 is provided with a trolley hub 171, the top of the slide rail 16 is connected with the bottom of the trolley hub 171 in a sliding manner, the bottom of the movable trolley 17 is provided with a lubricating mechanism 4 which is symmetrically distributed, the lubricating mechanism 4 is positioned right above the slide rail 16, the lubricating mechanism 4 comprises a lubricating chamber 401, a lubricant is placed in the lubricating chamber 401, the top end of the outside of the lubricating chamber 401 is fixed with the bottom of the movable trolley 17, a lubricating motor 402 is fixed on one side wall of the outside of the lubricating chamber 401, the output end of the lubricating motor 402 is fixed with a threaded rod 403, one end of the threaded rod 403, which is far away from the lubricating motor 402, penetrates through the lubricating chamber 401 and is rotatably connected with the lubricating chamber 401, and a sealing cover 404 is sleeved on the outside of the threaded rod 403, the sealing cover 404 is in threaded connection with the threaded rod 403, the bottom of the sealing cover 404 is in sliding connection with the bottom end of the inside of the lubricating chamber 401, an oil outlet 405 penetrates through the bottom of the lubricating chamber 401, the oil outlet 405 is located right below the sealing cover 404, sliding rods 406 are fixed on two side walls of the inside of the lubricating chamber 401, a sliding block 407 is fixed on the top of the sealing cover 404, and the sliding block 407 is in sliding connection with the sliding rods 406. Through the setting of lubricated mechanism 4, make the slip between slide rail 16 and the dolly wheel hub 171 more smooth and easy, reduce the wearing and tearing between guide rail and the wheel, effectively prevent to gnaw the emergence of rail, also can in time carry out lubricated operations such as burring to the track after the rail is gnawed in the production simultaneously, reduce the friction because of gnawing the rail and bring, reduce the resistance simultaneously, reduce the operation consumption of hoist, practice thrift the cost.

The working method of the rail gnawing prevention trolley for the double-beam portal crane comprises the following steps:

firstly, moving a crane to a designated working place through a moving wheel 14, placing a heavy object on a hook 314, starting a winding motor 309, driving an output end of the winding motor to drive a driving belt pulley 310 to rotate, driving a driven belt pulley 311 to rotate in cooperation with a driving belt 312, driving one rotating rod 302 to rotate by the driven belt pulley 311, driving a winding shaft 304 to rotate in cooperation with the other rotating rod 302, driving a winding roller 305 to rotate by the winding shaft 304, and lifting the heavy object by the winding roller 305 in cooperation with a lifting rope 313;

secondly, driving the movable trolley 17 to slide on the slide rail 16, when the movable trolley 17 moves to the position of the tail end of the slide rail 16, firstly, the movable trolley 17 collides with the buffer plate 206, after a part of force is counteracted through the buffer of the buffer spring 207, the buffer spring 207 transmits the force to the connecting rod 205, the connecting rod 205 is matched with the buffer rod 204 to transmit the force to the piston 203, so that the piston 203 slides in the buffer cavity 202, and the air in the buffer cavity 202 further unloads the force to the piston 203;

thirdly, when the trolley hub 171 of the moving trolley 17 rubs against the slide rail 16 for a long time, the slide rail 16 is easy to wear to cause rail gnawing, the lubricating motor 402 is started to drive the output end of the lubricating motor to drive the threaded rod 403 to rotate, the threaded rod 403 is connected with the two sealing covers 404 through threads, the sliding block 407 slides on the sliding rod 406 to drive the two sealing covers 404 to slide at the bottom end inside the lubricating chamber 401, so that the oil outlet 405 is opened, the lubricant falls on the slide rail 16 from the lower part of the oil outlet 405, and the automatic lubricating operation is realized.

The working principle is as follows:

when the crane is used, the crane is moved to a designated working place through the moving wheel 14, a heavy object is placed on the hook 314, the winding motor 309 is started to drive the output end of the winding motor to drive the driving belt pulley 310 to rotate, the driving belt pulley 312 is matched to drive the driven belt pulley 311 to rotate, the driven belt pulley 311 drives one of the rotating rods 302 to rotate, the other rotating rod 302 is matched to drive the winding shaft 304 to rotate, the winding shaft 304 drives the winding roller 305 to rotate, and the winding roller 305 is matched with the lifting rope 313 to lift the heavy object;

the movable trolley 17 is driven to slide on the slide rail 16, when the movable trolley 17 moves to the position of the tail end of the slide rail 16, the movable trolley 17 firstly collides with the buffer plate 206, after a part of force is counteracted through the buffering of the buffer spring 207, the buffer spring 207 transmits the force to the connecting rod 205, the connecting rod 205 is matched with the buffer rod 204 to transmit the force to the piston 203, the piston 203 slides in the buffer cavity 202, and the air in the buffer cavity 202 further releases the force to the piston 203. When the movable trolley 17 moves on the slide rail 16, the movable trolley 17 collides with the support frame 11 at the tail end of the slide rail 16, through the arrangement of the buffer mechanism 2, the movable trolley 17 firstly collides with the buffer plate 206, part of the collision force is counteracted through the buffer spring 207, the buffer spring 207 transmits the force to the connecting rod 205, and transmits the force to the piston 203 through the buffer rod 204, so that the piston 203 slides in the buffer cavity 202, the piston 203 is further unloaded through the air in the buffer cavity 202, thereby the collision force received by the movable trolley 17 is greatly reduced, the stability and the service life of the movable trolley 17 are improved, and the use safety of the crane is ensured.

When a trolley hub 171 of the moving trolley 17 rubs against the slide rail 16 for a long time, the slide rail 16 is easily worn to cause rail gnawing, the lubricating motor 402 is started to drive the output end of the lubricating motor to drive the threaded rod 403 to rotate, the threaded rod 403 is connected with the two sealing covers 404 through threads, the sliding block 407 slides on the sliding rod 406 to drive the two sealing covers 404 to slide at the bottom end inside the lubricating chamber 401, so that the oil outlet 405 is opened, the lubricant falls on the slide rail 16 from the lower part of the oil outlet 405, and the automatic lubricating operation is realized. Through the setting of lubricated mechanism 4, make the slip between slide rail 16 and the dolly wheel hub 171 more smooth and easy, reduce the wearing and tearing between guide rail and the wheel, effectively prevent to gnaw the emergence of rail, also can in time carry out lubricated operations such as burring to the track after the rail is gnawed in the production simultaneously, reduce the friction because of gnawing the rail and bring, reduce the resistance simultaneously, reduce the operation consumption of hoist, practice thrift the cost.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A rail gnawing preventing trolley for a double-beam portal crane is characterized by comprising two main beams (1) which are symmetrically distributed, a support table (15) is fixed between the two main beams (1), two ends of the supporting platform (15) are respectively fixed with the two supporting frames (11), two sliding rails (16) which are symmetrically distributed are fixed on the upper surface of the supporting platform (15), a first working groove is arranged on the upper surface of the supporting platform (15) near the middle, the bottom of the first working groove penetrates through and extends to the lower surface of the supporting platform (15), a moving trolley (17) is arranged above the sliding rail (16), a second working groove is formed in the center of the upper surface of the moving trolley (17), the bottom of the second working groove penetrates through and extends to the lower surface of the mobile trolley (17), and the second working groove is positioned right above the first working groove;

the buffer mechanisms (2) are symmetrically distributed at two ends of the upper surface of the support table (15), each buffer mechanism (2) comprises a buffer chamber (201), and the outer bottom end of each buffer chamber (201) is fixed to the upper surface of the support table (15);

a rolling mechanism (3) is arranged on the upper surface of the mobile trolley (17) near the front end, the winding mechanism (3) comprises two symmetrically distributed supporting seats (301), the bottom ends of the supporting seats (301) are fixed with the upper surface of the mobile trolley (17), one ends of the two supporting seats (301) close to each other are rotatably connected with rotating rods (302), a limiting plate (303) is fixed at one end of the rotating rod (302) far away from the supporting seat (301), a winding shaft (304) is arranged between the two limiting plates (303), a winding roller (305) is fixed on the outer surface of the winding shaft (304), a lifting rope (313) is wound on the outer side of the winding roller (305), one end, far away from the winding roller (305), of the lifting rope (313) penetrates through the first working groove and the second working groove and is located below the supporting table (15), and a hook (314) is installed at the bottom end of the lifting rope (313).

2. The trolley for the double-beam gantry crane capable of preventing gnawing the rail according to claim 1, wherein symmetrically distributed support frames (11) are fixed at one ends, away from each other, of the two main beams (1), a rail (12) is arranged at the top end of each main beam (1), the rails (12) and the main beams (1) are fixed through a plurality of uniformly distributed support rods, two symmetrically distributed support legs (13) are fixed at the bottom ends of the two main beams (1), and moving wheels (14) are installed at the bottom ends of the support legs (13).

3. The trolley for the double-beam portal crane for preventing the rail gnawing according to claim 1, a plurality of buffer cavities (202) which are uniformly distributed are fixed on two side walls in the buffer chamber (201), a piston (203) is arranged in the buffer cavity (202), the piston (203) is in contact with the inner wall of the buffer cavity (202) and is in sliding connection with the inner wall, a buffer rod (204) is fixed on one side of the piston (203) close to the movable trolley (17), one end of the buffer rod (204) far away from the piston (203) penetrates through the buffer cavity (202) and the buffer chamber (201) and is connected with the buffer cavity (202) and the buffer chamber (201) in a sliding mode, a connecting rod (205) is fixed at one end of the buffer rod (204) far away from the piston (203), one end of the connecting rod (205) far away from the buffer rod (204) is provided with a buffer plate (206), a plurality of buffer springs (207) which are uniformly distributed are fixed between the buffer plate (206) and the connecting rod (205).

4. The trolley for the double-beam gantry crane capable of preventing the rail gnawing according to claim 1, wherein two elastic clamping blocks (306) which are symmetrically distributed are fixed at two ends of the outer surface of the winding shaft (304), the elastic clamping blocks (306) are made of elastic metal, one side of the limiting plate (303) close to the winding shaft (304) is provided with an installation groove (307) matched with the winding shaft (304), the top end and the bottom end of the inside of the installation groove (307) are provided with clamping grooves (308) which are symmetrically distributed, and the clamping grooves (308) are matched with the elastic clamping blocks (306).

5. The trolley for the double-beam gantry crane capable of preventing the rails from being gnawed is characterized in that a winding motor (309) is fixed to the inner side wall of one of the supporting seats (301), the output end of the winding motor (309) penetrates through the supporting seat (301) and is fixed with a driving pulley (310), one end, away from the limiting plate (303), of one of the rotating rods (302) penetrates through the supporting seat (301) and is fixed with a driven pulley (311), and a transmission belt (312) is installed between the driving pulley (310) and the driven pulley (311).

6. The trolley for the double-beam gantry crane capable of preventing gnawing the rail as claimed in claim 1, wherein a fixing plate (161) is fixed to the bottom of the sliding rail (16), the fixing plate (161) is fixed to the support table (15) through a bolt, a trolley hub (171) is installed at the bottom of the moving trolley (17), and the top of the sliding rail (16) is slidably connected with the bottom of the trolley hub (171).

7. The trolley for the double-beam gantry crane capable of preventing gnawing the rail is characterized in that the bottom of the movable trolley (17) is provided with symmetrically distributed lubricating mechanisms (4), the lubricating mechanisms (4) are positioned right above the sliding rail (16), each lubricating mechanism (4) comprises a lubricating chamber (401), lubricant is placed in each lubricating chamber (401), the top end of the outside of each lubricating chamber (401) is fixed to the bottom of the movable trolley (17), a lubricating motor (402) is fixed to one side wall of the outside of each lubricating chamber (401), a threaded rod (403) is fixed to the output end of each lubricating motor (402), one end, far away from the lubricating motor (402), of each threaded rod (403) penetrates through each lubricating chamber (401) and is rotatably connected with each lubricating chamber (401), a sealing cover (404) is sleeved on the outer side of each threaded rod (403), and each sealing cover (404) is in threaded connection with each threaded rod (403), the bottom of the sealing cover (404) is in sliding connection with the inner bottom end of the lubricating chamber (401).

8. The trolley for the double-beam gantry crane capable of preventing the rails from being gnawed is characterized in that an oil outlet (405) penetrates through the bottom of the lubricating chamber (401), the oil outlet (405) is located right below the sealing cover (404), sliding rods (406) are fixed to two side walls inside the lubricating chamber (401), a sliding block (407) is fixed to the top of the sealing cover (404), and the sliding block (407) is in sliding connection with the sliding rods (406).

9. The trolley for the double-beam portal crane for preventing the rail gnawing according to claim 1, is characterized in that the working method of the trolley for the double-beam portal crane for preventing the rail gnawing is as follows:

firstly, a crane is moved to a designated working place through a moving wheel (14), a heavy object is placed on a hook (314), a winding motor (309) is started to drive an output end of the winding motor to drive a driving belt pulley (310) to rotate, a driving belt (312) is matched to drive a driven belt pulley (311) to rotate, the driven belt pulley (311) drives one rotating rod (302) to rotate, the other rotating rod (302) is matched to drive a winding shaft (304) to rotate, the winding shaft (304) drives a winding roller (305) to rotate, and the winding roller (305) is matched with a lifting rope (313) to lift the heavy object;

secondly, driving the movable trolley (17) to slide on the slide rail (16), when the movable trolley moves to the tail end of the slide rail (16), firstly, the movable trolley (17) collides with the buffer plate (206), after a part of force is counteracted through the buffering of the buffer spring (207), the buffer spring (207) transmits the force to the connecting rod (205), the connecting rod (205) is matched with the buffer rod (204) to transmit the force to the piston (203), so that the piston (203) slides in the buffer cavity (202), and the air in the buffer cavity (202) further unloads the piston (203);

and thirdly, when a trolley hub (171) of the mobile trolley (17) rubs with the sliding rail (16) for a long time, the sliding rail (16) is easy to wear to cause gnawing of the rail, the lubricating motor (402) is started to drive the output end of the lubricating motor to drive the threaded rod (403) to rotate, the threaded rod (403) is in threaded connection with the two sealing covers (404), the sliding block (407) is matched to slide on the sliding rod (406) to drive the two sealing covers (404) to slide at the bottom end inside the lubricating chamber (401), so that the oil outlet (405) is opened, the lubricating agent falls on the sliding rail (16) from the lower part of the oil outlet (405), and automatic lubricating operation is realized.