Deviation rectifying device of portal crane

Abstract

A deviation rectifying device of a portal crane effectively solves the problem that wheels deviate on a track and comprises a cart body and the track, the wheels running along the track are rotationally connected into the cart body, a first rotating shaft and a second rotating shaft in the vertical direction are rotationally connected into the cart body, and a first disc is fixed to the first rotating shaft in an offset mode. The first disc is located on the left side of the track, the first disc is rotationally connected with a plurality of first rollers, the first rollers are evenly distributed on the circumference of the first disc, and the first rollers are in rolling connection with the left side face of the track. A plurality of second rollers are uniformly and rotatably connected to the circumference of the second disc, the second rollers are in rolling connection with the right side face of the track, a first gear located above the cart body is coaxially fixed to the first rotating shaft, a second gear located above the cart body is coaxially fixed to the second rotating shaft, and the first gear is meshed with the second gear.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, in particular to a deviation-correcting device for a gantry crane. Background Art

[0002] The metal structure of a gantry crane is like a door-shaped frame, with two legs installed under the load-bearing main beam. The trolley walking mechanism is installed on the legs, and the wheels can run directly on the ground track. It is mainly used for loading and unloading operations in outdoor freight yards, material yards, and bulk cargoes. It has the characteristics of a large operating range, wide adaptability, and strong versatility.

[0003] When the wheels in the trolley traveling mechanism are running on the track, the gantry crane will usually deviate during the traveling process due to uneven ground or track wear, causing the gantry crane trolley to gnaw the track, causing wear to both the trolley wheels and the track, and affecting the safety performance of the entire gantry crane. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a deviation correction device for a gantry crane, which effectively solves the problem of wheels deviating on the track.

[0005] The technical solution to solve the technical problem is: it includes a cart body and a track, the cart body is rotatably connected with wheels running along the track, the cart body is rotatably connected with a first shaft and a second shaft in a vertical direction, the first shaft is offset and fixed with a first disc, the first disc is located on the left side of the track, the first disc is rotatably connected with a plurality of first rollers, the plurality of first rollers are evenly distributed on the circumference of the first disc, the first roller is rollingly connected to the left side of the track, the second shaft is offset and fixed with a second disc, the second disc is located on the right side of the track, the second disc is evenly rotatably connected with a plurality of second rollers, the second roller is rollingly connected to the right side of the track, the first shaft is coaxially fixed with a first gear located above the cart body, the second shaft is coaxially fixed with a second gear located above the cart body, and the first gear and the second gear are meshed with each other.

[0006] Preferably, a plurality of support columns are evenly fixed on the upper end of the vehicle body, a support seat is provided above the vehicle body, and the support columns are fixedly connected to the support seat.

[0007] Preferably, a worm wheel located above the second gear is coaxially fixed to the second rotating shaft, two brackets are fixed to the lower end of the support seat, a worm is rotatably connected between the two brackets, the worm is meshed with the worm wheel, a motor is installed on the lower end surface of the support seat, and the motor is coaxially fixedly connected to the worm.

[0008] Compared with the traditional equipment, the utility model has the following advantages: 1) the worm is driven to move by the motor, and the worm drives the worm wheel to rotate, the first gear and the second gear are meshed, the first rotating shaft is offset and fixed with the first disc, and the second rotating shaft is offset and fixed with the second disc, so that the first disc and the second disc are cleverly controlled to approach or move away from the track at the same time, with good linkage and flexible operation; 2) when the first disc and the second disc are away from the track at the same time, it is convenient to install or disassemble the vehicle body on the track, which is beneficial to later maintenance; when the first disc and the second disc are close to the track at the same time, the first roller and the second roller can clamp the track at the same time and be connected with the track in a rolling manner, so as to maintain the balance of the left and right sides of the wheel and prevent the wheel from deviating on the track; 3) when the wheel deviates on the track, the motor is started, and the motor controls the first disc and the second disc on both sides of the track to rotate synchronously in opposite directions and push the vehicle body back, so as to realize the deviation correction of the vehicle body, thereby reducing the friction between the wheel and the track, and the worm gear mechanism has self-locking property, simple operation, convenient adjustment, safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0010] Figure 2 It is a schematic diagram of the three-dimensional structure of the first gear and the second gear in the utility model;

[0011] Figure 3 It is a schematic diagram of the three-dimensional structure of the wheel, the first disc and the second disc in the utility model.

[0012] Figure numerals: 1. trolley body; 2. track; 3. wheel; 4. first rotating shaft; 5. second rotating shaft; 6. first disc; 7. first roller; 8. second disc; 9. second roller; 10. first gear; 11. second gear; 12. support column; 13. support seat; 14. worm gear; 15. worm; 16. motor. DETAILED DESCRIPTION

[0013] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0014] Depend on Figures 1 to 3A deviation correction device for a gantry crane is provided, comprising a trolley body 1 and a track 2, a wheel 3 running along the track 2 is rotatably connected in the trolley body 1, a first rotating shaft 4 and a second rotating shaft 5 in a vertical direction are rotatably connected in the trolley body 1, a first disc 6 is offset and fixed to the first rotating shaft 4, the first disc 6 is located on the left side of the track 2, a plurality of first rollers 7 are rotatably connected to the first disc 6, the plurality of first rollers 7 are uniformly distributed on the circumference of the first disc 6, the first roller 7 is rollingly connected to the left side of the track 2, a second disc 8 is offset and fixed to the second rotating shaft 5, the second disc 8 is located on the right side of the track 2, a plurality of second rollers 9 are rotatably connected to the second disc 8, the plurality of second rollers 9 are uniformly distributed on the circumference of the second disc 8, the second roller 9 is rollingly connected to the right side of the track 2, a first gear 10 located above the trolley body 1 is coaxially fixed to the first rotating shaft 4, a second gear 11 located above the trolley body 1 is coaxially fixed to the second rotating shaft 5, and the first gear 10 and the second gear 11 are meshed.

[0015] A plurality of support columns 12 are evenly fixed on the upper end of the vehicle body 1 , a support seat 13 is provided above the vehicle body 1 , and the support columns 12 are fixedly connected to the support seat 13 .

[0016] A worm wheel 14 located above the second gear 11 is coaxially fixed to the second rotating shaft 5. Two brackets are fixed to the lower end of the support seat 13. A worm 15 is rotatably connected between the two brackets. The worm 15 is meshed with the worm wheel 14. A motor 16 is installed on the lower end surface of the support seat 13. The motor 16 is coaxially fixedly connected to the worm 15.

[0017] When the utility model is in use, during the installation process, in the initial position, the distance between the rightmost end of the first disc 6 and the left side of the track 2 is at a maximum value, the first roller 7 is away from the left side of the track 2, the distance between the leftmost end of the second disc 8 and the right side of the track 2 is at a maximum value, and the second roller 9 is away from the right side of the track 2, so that the vehicle body 1 can move from top to bottom, and the wheel 3 is placed on the track 2 to avoid the first roller 7 and the second roller 9 from interfering with the track 2 respectively, and the motor 16 is started, the motor 16 drives the worm 15 to rotate coaxially, the worm 15 drives the worm wheel 14 to rotate, the worm wheel 14 drives the second shaft 5 and the second gear 11 to rotate coaxially, the second shaft 5 drives the second disc 8 to rotate and approach the right side of the track 2, the second roller 9 is rotatably connected with the second disc 8, and then the second roller 9 approaches the right side of the track 2, at the same time, the second gear 11 drives the first gear 10 to rotate, and the first gear 10 drives the first shaft 4 Coaxial rotation, the first rotating shaft 4 drives the first disc 6 to rotate and approach the left side of the track 2, the first roller 7 is rotationally connected to the first disc 6, and then the first roller 7 approaches the left side of the track 2, the first disc 6 and the second disc 8 simultaneously approach the track 2, when the first roller 7 and the second roller 9 are simultaneously rollingly connected to the track 2, the motor 16 is turned off, the lead angle of the worm 15 is smaller than the equivalent friction angle between the meshing gear teeth, the worm gear mechanism has self-locking property, can skillfully control the position of the first disc 6 and the second disc 8, can effectively maintain the balance of the left and right sides of the wheel 3, prevent the wheel 3 from shifting during the walking process on the track 2, and improve the stability of the wheel 3. During the movement of the wheel 3, the first roller 7 and the second roller 9 are respectively rollingly connected to the track 2, the friction force is small, and the service life of the equipment is extended. The support seat 13 is installed together with the legs of the gantry crane to ensure the stability of the gantry crane operation.

[0018] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A deviation correction device for a gantry crane, comprising a trolley body (1) and a track (2), wherein a wheel (3) running along the track (2) is rotatably connected to the trolley body (1), and characterized in that: A first rotating shaft (4) and a second rotating shaft (5) in a vertical direction are rotatably connected in the vehicle body (1); a first disc (6) is offset and fixed to the first rotating shaft (4); the first disc (6) is located on the left side of the track (2); the first disc (6) is rotatably connected to a plurality of first rollers (7); the plurality of first rollers (7) are evenly distributed on the circumference of the first disc (6); the first rollers (7) are rollingly connected to the left side of the track (2); a second disc (8) is offset and fixed to the second rotating shaft (5); the second disc (8) ) is located on the right side of the track (2); the second disc (8) is rotatably connected to a plurality of second rollers (9); the plurality of second rollers (9) are evenly distributed on the circumference of the second disc (8); the second rollers (9) are rollingly connected to the right side of the track (2); the first rotating shaft (4) is coaxially fixed with a first gear (10) located above the trolley body (1); the second rotating shaft (5) is coaxially fixed with a second gear (11) located above the trolley body (1); the first gear (10) and the second gear (11) are meshed.

2. The deviation correction device for a gantry crane according to claim 1, characterized in that: A plurality of support columns (12) are evenly fixed on the upper end of the cart body (1), a support seat (13) is provided above the cart body (1), and the support columns (12) are fixedly connected to the support seat (13).

3. The deviation correction device for a gantry crane according to claim 2, characterized in that: A worm wheel (14) located above the second gear (11) is coaxially fixed to the second rotating shaft (5); two brackets are fixed to the lower end of the support seat (13); a worm (15) is rotatably connected between the two brackets; the worm (15) is meshed with the worm wheel (14); a motor (16) is mounted on the lower end surface of the support seat (13); the motor (16) is coaxially fixedly connected to the worm (15).

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