CN218320434U

CN218320434U - Cantilever crane for rail transit

Info

Publication number: CN218320434U
Application number: CN202222733189.8U
Authority: CN
Inventors: 商晓恒; 厉万里; 任路遥; 李玉龙
Original assignee: Xuzhou XCMG Truck Mounted Crane Co Ltd
Current assignee: Xuzhou XCMG Truck Mounted Crane Co Ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-01-17
Anticipated expiration: 2032-10-18

Abstract

The utility model belongs to the hoist field, concretely relates to cantilever crane for track traffic, including installing the rotation mechanism on the base, rotation mechanism's fixed ring gear and base fixed connection are connected with the stand on rotation mechanism's the rotating gear circles, and the top of stand articulates there is the cantilever, is equipped with leveling mechanism between the afterbody of cantilever and the stand, and the front portion of cantilever is equipped with electric block, realizes the walking motion of the relative cantilever of electric block through rack and pinion transmission between electric block and cantilever. The utility model discloses a levelling mechanism guarantees that the cantilever is in the horizontality, and electric block skids or the weak condition of walking when effectively avoiding orbital both sides to have the difference in height, improves cantilever crane's operation reliability. Through the meshing of the transmission gear on the electric hoist and the rack on the cantilever, the synchronism of the electric hoist walking is ensured when the two cantilever cranes are in joint control.

Description

Cantilever crane for rail transit

Technical Field

The utility model belongs to the hoist field, concretely relates to cantilever crane for track traffic.

Background

The cantilever crane is a small and medium-sized electric control crane which is started in recent years, and is widely applied to places such as factory buildings, warehouses, freight stations and the like by virtue of the characteristics of flexible use, simple operation and the like. At present, with the rapid development of railway traffic of railways, urban rails and the like in China, a cantilever crane is more widely involved in the production construction, maintenance and repair of the railways and the urban rails, and the two cantilever cranes are respectively arranged on two track flat cars and are used for loading and unloading long and heavy goods below 3 tons, such as steel rails, frog, switch rails, road maintenance machinery, engineering components and the like, independently or jointly controlled. Due to the fact that tunnels, contact network vertical rods and the like exist in electrified railways and urban rail lines, accidents that cantilevers collide with the tunnels and the contact network vertical rods often occur in the use process of conventional cantilever cranes, and large potential safety hazards exist; railway, city rail circuit have one side rail superelevation condition in the curve section, and cantilever crane is in the slope operation, and the condition that electric block skidded or walking is weak often appears, influences operation reliability and efficiency.

Disclosure of Invention

In order to overcome the shortcomings of the prior art, the utility model provides a cantilever crane for rail transit has gyration limit, leveling, walking accuracy control function.

The utility model discloses a realize through following technical scheme: the utility model provides a cantilever crane for track traffic, is including installing the rotation mechanism on the base, rotation mechanism's fixed ring gear and base fixed connection, rotation mechanism's rotating ring gear is connected with the stand, and the top of stand articulates there is the cantilever, is equipped with leveling mechanism between the afterbody of cantilever and the stand, and the front portion of cantilever is equipped with electric block, realizes the walking motion of the relative cantilever of electric block through rack and pinion transmission between electric block and cantilever.

In some embodiments, the leveling mechanism comprises an upper screw, a leveling sleeve, a lock nut, and a lower screw; the connecting portion of going up the screw rod is articulated with the cantilever, goes up the screw thread portion of screw rod and passes a lock nut and leveling telescopic upper portion threaded connection, the connecting portion of screw rod is articulated with the stand down, and the screw thread portion of screw rod passes another lock nut and leveling telescopic lower part threaded connection down.

In some embodiments, the cantilever is provided with an angle indicator, the angle indicator comprises a pointer and an indicating sign with angle scales, the pointer and the indicating sign are both mounted on the cantilever, and the pointer is pointed in a vertically downward direction under the action of the gravity of the pointer.

In some embodiments, the device further comprises a rotary encoder, wherein the rotary encoder is arranged at the bottom of the upright and is rotationally connected with the fixed gear ring of the rotary mechanism.

In some embodiments, the rotary encoder comprises a gear, a connecting shaft, a connecting assembly, a fixing frame and an encoder; the gear is connected with rotation of the fixed gear ring of the swing mechanism, the gear is fixed on the connecting shaft, the connecting shaft is connected with the connecting assembly in a rotating mode, the connecting shaft is further connected with the encoder in a rotating mode, and the shell of the encoder is installed on the connecting assembly through the fixing frame.

In some embodiments, the upper part of the electric hoist is in rolling connection with the cantilever, the lower surface of the cantilever is provided with a rack, and the electric hoist is provided with a transmission gear in transmission fit with the rack.

The beneficial effects of the utility model are that: the utility model discloses a levelling mechanism guarantees that the cantilever is in the horizontality, and electric block skids or the weak condition of walking when effectively avoiding curve section (outer rail superelevation), improves cantilever crane's operation reliability. Through the meshing of the transmission gear on the electric hoist and the rack on the cantilever, the synchronism of the electric hoist walking is ensured when the two cantilever cranes are in joint control. Can guarantee that the during operation cantilever does not invade and faces the line through rotary encoder control cantilever's gyration angle, avoid bumping with tunnel wall, contact net pole setting, effectively ensure the security of railway maintenance and repair operation.

Drawings

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

FIG. 2 is a partial schematic view of the assembly of the swing mechanism and the rotary encoder of the present invention;

FIG. 3 is a schematic structural diagram of the rotary encoder of the present invention;

fig. 4 is a schematic structural view of the leveling mechanism of the present invention;

fig. 5 is a partial schematic view of the assembly of the electric hoist and the cantilever according to the present invention;

fig. 6 is a schematic view of the utility model under the first working condition;

fig. 7 is a schematic view of the utility model in a second operating mode;

in the figure, 1, a base, 2, a rotary mechanism, 3, a rotary encoder, 31, a gear, 32, a connecting shaft, 33, a connecting assembly, 34, a fixed frame, 35, an encoder, 4, a stand column, 5, a leveling mechanism, 51, an upper screw rod, 52, a leveling sleeve, 53, a locking nut, 54, a lower screw rod, 6, a cantilever, 7, an angle indicator, 8, an electric hoist, 81, a rack, 82 and a transmission gear.

Detailed Description

The invention will be further explained below with reference to the drawings and examples.

As shown in fig. 1 to 7, a cantilever crane for rail transit comprises a base 1, a swing mechanism 2, a column 4, a leveling mechanism 5, a cantilever 6 and an electric hoist 8. The base 1 is used to mount a cantilever crane on a rail trolley. The fixed gear ring of the swing mechanism 2 is fixedly connected with the base 1, and the rotating gear ring of the swing mechanism 2 is connected with the upright post 4. The top of stand 4 articulates there is cantilever 6, and cantilever 6 can rotate from top to bottom relative to stand 4. A leveling mechanism 5 is arranged between the tail part of the cantilever 6 and the upright post 4, and the cantilever 6 is driven to rotate up and down around a hinged point with the upright post 4 through the telescopic action of the leveling mechanism 5. The front part of cantilever 6 is equipped with electric block 8, and the walking motion of electric block 8 relative cantilever 6 is realized through rack and pinion transmission between electric block 8 and cantilever 6. Specifically, the upper portion of electric block 8 is equipped with the gyro wheel, and the gyro wheel supports on cantilever 6, and the gyro wheel is used for supporting electric block 8 and installs on cantilever 6, in addition, the relative linear motion of cantilever 6 of supplementary electric block 8. The lower surface of the cantilever 6 is provided with a rack 81, the electric hoist 8 is provided with a transmission gear 82 in transmission fit with the rack 81, and the transmission gear 82 is driven by a motor and a transmission assembly to move relative to the rack 81 to drive the electric hoist 8 to walk on the cantilever 6. When hoisting operation is needed, the position of the electric hoist 8 relative to the cantilever 6 is adjusted through gear and rack transmission to adjust the hoisting position. The cantilever crane drives the upright post 4 to rotate through the rotating gear ring of the slewing mechanism 2, and then drives the cantilever 6 to rotate in the horizontal direction. When a cantilever crane is needed to hoist cargos, the swing mechanism 2 drives the stand column 4 to rotate so as to enable the cantilever 6 to rotate outwards, so that the front part of the cantilever 6 extends out of the track flat car, and the electric hoist 8 is further matched to realize hoisting operation; when not needing cantilever crane operation, in slewing mechanism 2 drove the rotation of stand 4 and receive the track flatbed with the front portion of cantilever 6, avoid with the emergence collision accident such as tunnel and contact net pole setting. If the height difference exists on the two sides of the track, before the electric hoist 8 is driven to walk relative to the cantilever 6, the leveling mechanism 5 is used for leveling the cantilever 6, so that the cantilever 6 is kept in a horizontal working state.

In some embodiments, as shown in fig. 1, 4, 6, and 7, the leveling mechanism 5 includes an upper screw 51, a leveling sleeve 52, a lock nut 53, and a lower screw 54. The connecting part of the upper screw rod 51 is hinged with the cantilever 6, the thread part of the upper screw rod 51 passes through a lock nut 53 to be connected with the upper thread of the leveling sleeve 52, the connecting part of the lower screw rod 54 is hinged with the upright post 4, and the thread part of the lower screw rod 54 passes through another lock nut 53 to be connected with the lower thread of the leveling sleeve 52. If there is a height difference between both sides of the rail, the cantilever 6 is horizontally adjusted by adjusting the depth of screwing the upper screw 51 into the leveling sleeve 52 and the depth of screwing the lower screw 54 into the leveling sleeve 52.

In some embodiments, as shown in fig. 1, 4, 6 and 7, in order to ensure the accuracy of leveling of the cantilever 6, an angle indicator 7 is arranged on the cantilever 6, the angle indicator 7 comprises a pointer and an indicating plate with an angle scale, the pointer and the indicating plate are both mounted on the cantilever 6, and the pointer is pointed in a vertically downward direction under the action of the gravity of the pointer. When no height difference exists on the two sides of the track and the cantilever 6 is in a horizontal state, the pointer points to a vertical downward direction under the action of self gravity and points to a zero graduation line position of the indicating sign below the pointer. When the rail flat car runs to the position where the height difference exists on the two sides of the rail, the cantilever 6 needs to be leveled before hoisting operation, the cantilever 6 inclines due to the height difference existing on the two sides of the rail, but the pointer always points to the vertical downward direction under the action of self gravity, the pointer does not correspond to the zero scale mark position of the indication sign at the moment, the cantilever 6 is leveled through the leveling mechanism 5, and when the pointer indicates the zero scale mark position of the sign again, the leveling of the cantilever 6 is completed.

In some embodiments, as shown in fig. 2 and 3, a rotary encoder 3 is further included, and the rotary encoder 3 is arranged at the bottom of the upright post 4 and is rotationally connected with the fixed gear ring of the rotary mechanism 2. Specifically, the rotary encoder 3 includes a gear 31, a connecting shaft 32, a connecting assembly 33, a fixing bracket 34 and an encoder 35; the gear 31 is rotationally connected with the fixed gear ring of the swing mechanism 2, that is, the gear 31 can rotate circumferentially around the fixed gear ring of the swing mechanism 2. The gear 31 is fixed on the connecting shaft 32, the connecting shaft 32 is rotatably connected with the connecting assembly 33 through a shaft sleeve, the connecting shaft 32 is further rotatably connected with the encoder 35, and the shell of the encoder 35 is mounted on the connecting assembly 33 through a fixing frame 34. When the rotary encoder 3 works, the gear 31 and the connecting shaft 32 rotate together relative to the connecting assembly 33, the connecting shaft 32 drives the rotating part of the encoder 35 to read the data of the rotating angle, the encoder 35 measures the rotating angle of the cantilever 6, and the rotating angle of the cantilever 6 is limited through a controller program of the encoder 35.

As shown in fig. 6, when the outer rail of the curved section is over high and works inside, the relative positions of the leveling sleeve 52, the upper screw 51 and the lower screw 54 are adjusted to reduce the length of the leveling mechanism 5, the front part of the cantilever 6 rotates upwards around the upright post 4, and the angle indicator 7 is observed until the pointer points to the zero scale line of the indicating sign, so as to complete the leveling of the cantilever 6.

As shown in fig. 7, when the outer rail of the curved section is ultrahigh and works on the outer side, the relative positions of the leveling sleeve 52, the upper screw 51 and the lower screw 54 are adjusted, so that the length of the leveling mechanism 5 is increased, the front part of the cantilever 6 rotates downwards around the upright post 4, and the angle indicator 7 is observed until the pointer points to the zero scale line of the indicating sign, and the leveling of the cantilever 6 is completed.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims

1. A kind of track traffic uses the cantilever crane, characterized by that: including installing rotation mechanism (2) on base (1), the fixed ring gear and base (1) fixed connection of rotation mechanism (2), be connected with stand (4) on the rotation ring gear of rotation mechanism (2), the top of stand (4) articulates there is cantilever (6), be equipped with leveling mechanism (5) between the afterbody of cantilever (6) and stand (4), the front portion of cantilever (6) is equipped with electric block (8), realize the walking motion of the relative cantilever (6) of electric block (8) through rack and pinion transmission between electric block (8) and cantilever (6).

2. The cantilever crane for rail transit according to claim 1, wherein: the leveling mechanism (5) comprises an upper screw (51), a leveling sleeve (52), a locking nut (53) and a lower screw (54); the connecting part of the upper screw (51) is hinged with the cantilever (6), the thread part of the upper screw (51) penetrates through a locking nut (53) to be connected with the upper part thread of the leveling sleeve (52), the connecting part of the lower screw (54) is hinged with the upright post (4), and the thread part of the lower screw (54) penetrates through another locking nut (53) to be connected with the lower part thread of the leveling sleeve (52).

3. The cantilever crane for rail transit according to claim 1, wherein: be equipped with angle indicator (7) on cantilever (6), angle indicator (7) include pointer and have the sign of instructing of angle scale, and pointer and sign of instructing are all installed on cantilever (6), and the pointer receives self gravity and points to vertical orientation down.

4. The cantilever crane for rail transit according to claim 1, wherein: the rotary encoder (3) is arranged at the bottom of the upright post (4) and is rotationally connected with the fixed gear ring of the rotary mechanism (2).

5. The cantilever crane for rail transit according to claim 4, wherein: the rotary encoder (3) comprises a gear (31), a connecting shaft (32), a connecting assembly (33), a fixing frame (34) and an encoder (35); gear (31) rotate with the fixed ring gear of rotation mechanism (2) and be connected, and gear (31) are fixed on connecting axle (32), and connecting axle (32) rotate with coupling assembling (33) and are connected, and connecting axle (32) still rotate with encoder (35) and be connected, and the shell of encoder (35) passes through mount (34) and installs on coupling assembling (33).

6. The cantilever crane for rail transit according to claim 1, wherein: the upper portion of electric block (8) and cantilever (6) roll connection, the lower surface of cantilever (6) is equipped with rack (81), is equipped with on electric block (8) with rack (81) transmission complex drive gear (82).