Anti-derailment wheel set of crane

Abstract

The utility model relates to the technical field of cranes, and provides an anti-derailment wheel set of a crane, which comprises a crane frame, a lifting structure main body is arranged at the top of the crane frame, two rails are arranged at the bottom of the crane frame, two servo motors are arranged on one side of the outer part of the crane frame, and the two servo motors are arranged on the other side of the outer part of the crane frame. The bottom of each servo motor is fixedly connected with a fixing plate, output shafts are arranged on the outer portions of the two servo motors, two sliding grooves are formed in the crane frame, one end of each output shaft is fixedly connected with a lead screw, and four bearing seats are arranged on the outer portions of the two lead screws. According to the technical scheme, the problem that in the prior art, when a traditional crane wheel set runs, if the wheel set is subjected to the large transverse force effect, such as unbalanced running of a crane, uneven track, uneven wheel abrasion and other factors, the wheel may deviate from a normal track, and derailment is caused is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and specifically, to a wheel set for preventing derailment of a crane. Background Art

[0002] A crane refers to a multi-action lifting machine that vertically lifts and horizontally transports heavy objects within a certain range. The traveling wheel set therein includes driving wheels and driven wheels. The driving wheels are drivingly connected to a driving device, and a trolley track that cooperates with the driving wheels and the driven wheels is provided on a bridge, which realizes the action of horizontally transporting heavy objects by the crane.

[0003] The patent specification with the publication number CN201746230U discloses a passive wheel set of a crane without a central shaft, which includes wheel spokes and bosses symmetrically machined into two coaxial journal shafts, and bearings and their bearing seats are directly assembled on these two journal shafts. The load and self-weight of the running mechanism are transmitted through the vehicle frame, bearing seat, and shaft.

[0004] However, it is found in the implementation of the related technology that the above technical solutions have the following problems: The above device may cause derailment of the crane wheel set during use. When the crane wheels are running, if they are subjected to a large lateral force, such as factors like unbalanced operation of the crane, uneven track surface, uneven wheel wear, etc., the wheels may deviate from the normal track, thus resulting in derailment. Therefore, further improvement is needed. Summary of the Utility Model

[0005] The utility model provides a wheel set for preventing derailment of a crane, which solves the problem that in the related technology, when the traditional crane wheel set is running, if it is subjected to a large lateral force, such as factors like unbalanced operation of the crane, uneven track surface, uneven wheel wear, etc., the wheels may deviate from the normal track, thus resulting in derailment.

[0006] The technical solution of the utility model is as follows:

[0007] A wheel set for preventing derailment of a crane includes a crane vehicle frame. A hoisting structure main body is provided at the top of the crane vehicle frame. Two tracks are provided at the bottom of the crane vehicle frame. Two servo motors are provided on one side of the outside of the crane vehicle frame. Fixing plates are fixedly connected to the bottoms of the two servo motors. Output shafts are provided outside both of the two servo motors. Two sliding grooves are opened inside the crane vehicle frame. One ends of the two output shafts are fixedly connected to lead screws. Four bearing seats are provided on the outside of each of the two lead screws. The lead screws and the bearing seats are connected by ball screw pairs. The bottoms of the eight bearing seats are all connected with rollers through bearings.

[0008] Preferably, the fixed plate is fixedly connected to the outside of the crane frame, and both ends of the screw rod are connected to both ends of the sliding groove through bearings.

[0009] Preferably, one end of the output shaft extends into the sliding groove, and the eight bearing seats are arranged in a pairwise symmetric distribution.

[0010] Preferably, the two rollers are in contact with the outer sides of both sides of the track, and the bearing seat is slidably connected to the sliding groove.

[0011] Preferably, two cylinders are provided on the top of the crane frame, piston rods are slidably connected to the interiors of the two cylinders, and support platforms are fixedly connected to the bottoms of the two piston rods.

[0012] Preferably, the two support platforms are fixedly connected to the top of the crane frame, long plates are fixedly connected to one ends of the two piston rods, and two sliding plates are fixedly connected to the bottoms of the long plates.

[0013] Preferably, scraping rods are fixedly connected to the bottoms of the four sliding plates, two connecting plates are fixedly connected to both outer sides of the crane frame, the sliding plates are slidably connected to the interiors of the connecting plates, and two support plates are fixedly connected to the bottoms of the connecting plates.

[0014] Preferably, the two sides of the scraping rod are slidably connected to the two support plates, a cleaning brush is fixedly connected to the bottom of the connecting plate, the cleaning brush is in contact with the surface of the track, and the cleaning brush is in contact with the scraping rod.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, when the two rollers move to both sides of the track and are in contact with it, the two rollers will be limited to both sides of the track and roll closely along both sides of the track as the crane frame moves. At this time, by limiting the two rollers to both sides of the track, it is possible to prevent the crane frame from derailing during movement, solving the problem that in the traditional crane wheel set during operation, if it is subjected to a large lateral force, such as factors like unbalanced operation of the crane, uneven track surface, uneven wheel wear, etc., the wheels may deviate from the normal track, thus resulting in derailment.

[0017] 2. In the present utility model, when the cylinder is activated, the piston rod will drive the long plate to move. When the long plate moves, it will drive the two sliding plates to move respectively. When the sliding plates move, they will drive the scraping rod to move. When the scraping rod moves into contact with the cleaning brush, the scraping rod will scrape off the impurities attached to the surface of the cleaning brush, preventing the surface of the cleaning brush from being affected by the attached impurities and affecting the cleaning effect of the track. Description of the Drawings

[0018] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a schematic diagram of a partial structure of the present utility model Figure 1 ;

[0021] Figure 3 is a schematic diagram of a partial structure of the present utility model Figure 2 ;

[0022] Figure 4 is for the present utility model Figure 3 is an enlarged view of part A in the present utility model.

[0023] In the figure: 1, crane frame; 2, hoisting structure main body; 3, track; 4, servo motor; 5, fixing plate; 6, output shaft; 7, sliding groove; 8, lead screw; 9, bearing seat; 10, roller; 11, cylinder; 12, piston rod; 13, support platform; 14, long plate; 15, sliding plate; 16, scraping rod; 17, connecting plate; 18, support plate; 19, cleaning brush. Specific embodiments

[0024] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0025] Embodiment 1

[0026] As Figures 1 to 2 shown, this embodiment proposes a wheel set for preventing derailment of a crane, including a crane frame 1, a hoisting structure main body 2 is provided at the top of the crane frame 1, two tracks 3 are provided at the bottom of the crane frame 1, two servo motors 4 are provided on one side outside the crane frame 1, a fixing plate 5 is fixedly connected to the bottom of the two servo motors 4, output shafts 6 are provided outside the two servo motors 4, two sliding grooves 7 are opened inside the crane frame 1, one ends of the two output shafts 6 are fixedly connected with lead screws 8, four bearing seats 9 are provided outside the two lead screws 8, and the lead screws 8 and the bearing seats 9 are connected by a ball screw pair, and the bottoms of the eight bearing seats 9 are all connected with rollers 10 through bearings.

[0027] In this embodiment, the fixed plate 5 is fixedly connected to the outside of the lifting vehicle frame 1, and both ends of the screw rod 8 are connected to both ends of the sliding groove 7 through bearings, which can facilitate the connection and support of the screw rod 8.

[0028] In this embodiment, one end of the output shaft 6 extends into the sliding groove 7, and eight bearing seats 9 are arranged in a pairwise symmetric manner, which can facilitate the output shaft 6 to drive the screw rod 8 to rotate.

[0029] In this embodiment, the two rollers 10 are in contact with the outer sides of both sides of the track 3, and the bearing seat 9 is slidably connected to the sliding groove 7, which can facilitate the two rollers 10 to be limited on both sides of the track 3.

[0030] During use, the staff first electrically connects the two servo motors 4. After the two servo motors 4 are powered on, they will drive the two screw rods 8 to rotate respectively through the output shafts 6. While the two screw rods 8 are rotating, they will drive the eight bearing seats 9 to move in pairs along the inside of the sliding groove 7. While the eight bearing seats 9 are moving in pairs, they will drive the eight rollers 10 to move in pairs respectively. When the two rollers 10 move to both sides of the track 3 and come into contact with it, the two rollers 10 will be limited on both sides of the track 3 and roll closely along both sides of the track 3 as the lifting vehicle frame 1 moves. At this time, by limiting the two rollers 10 on both sides of the track 3, it can prevent the lifting vehicle frame 1 from derailing when moving.

[0031] Embodiment 2

[0032] As Figures 3 to 4 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes that two cylinders 11 are provided on the top of the lifting vehicle frame 1. The inside of both cylinders 11 is slidably connected with piston rods 12, and the bottoms of both piston rods 12 are fixedly connected with support platforms 13.

[0033] In this embodiment, both support platforms 13 are fixedly connected to the top of the lifting vehicle frame 1. One end of both piston rods 12 is fixedly connected with a long plate 14, and two sliding plates 15 are fixedly connected to the bottom of the long plate 14, which can facilitate the piston rod 12 to drive the long plate 14 to move while moving.

[0034] In this embodiment, scraping rods 16 are fixedly connected to the bottoms of all four sliding plates 15. Two connecting plates 17 are fixedly connected to both outer sides of the lifting vehicle frame 1. The sliding plates 15 are slidably connected to the inside of the connecting plates 17, and two support plates 18 are fixedly connected to the bottom of the connecting plates 17, which can facilitate the long plate 14 to drive the two sliding plates 15 to move while moving.

[0035] In this embodiment, the two sides of the scraping rod 16 are slidably connected to the two support plates 18. The bottom of the connecting plate 17 is fixedly connected with a cleaning brush 19. The cleaning brush 19 is in contact with the surface of the track 3 and is also in contact with the scraping rod 16, which facilitates the cleaning brush 19 to clean the impurities attached to the surface of the track 3 thoroughly.

[0036] During use, impurities and other substances often adhere to the surface of the track 3, which will affect the running of the wheels on the track 3. At this time, when the lifting vehicle frame 1 moves, it will drive the connecting plate 17 to move. When the connecting plate 17 moves, it will drive the cleaning brush 19 to move. When the cleaning brush 19 moves, it will clean the impurities and other substances attached to the surface of the track 3. When the cleaning brush 19 moves for a long time, impurities remaining from cleaning the track 3 will adhere to its surface. At this time, the staff can start the cylinder 11. When the cylinder 11 starts, it will drive the long plate 14 to move through the piston rod 12. When the long plate 14 moves, it will drive the two sliding plates 15 to move respectively. When the sliding plates 15 move, they will drive the scraping rod 16 to move. When the scraping rod 16 moves to contact the cleaning brush 19, the scraping rod 16 will scrape off the impurities attached to the surface of the cleaning brush 19, preventing the surface of the cleaning brush 19 from being affected by the attached impurities and thus affecting the cleaning effect of the track 3.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A crane anti-derailment wheel set, comprising a crane frame (1), characterized in that: A lifting structure body (2) is provided on the top of the crane frame (1), two rails (3) are provided on the bottom of the crane frame (1), two servo motors (4) are provided on one side of the outside of the crane frame (1), a fixing plate (5) is fixedly connected to the bottom of the two servo motors (4), an output shaft (6) is provided on the outside of the two servo motors (4), two sliding grooves (7) are provided inside the crane frame (1), one end of the two output shafts (6) is fixedly connected to a screw rod (8), four bearing seats (9) are provided on the outside of the two screw rods (8), the screw rods (8) and the bearing seats (9) are connected via a ball nut pair, and the bottoms of the eight bearing seats (9) are connected to rollers (10) via bearings.

2. A crane anti-derailment wheel set according to claim 1, characterized in that: The fixing plate (5) is fixedly connected to the outside of the crane frame (1), and the two ends of the screw rod (8) are respectively connected to the two ends of the sliding groove (7) via bearings.

3. A crane anti-derailment wheel set according to claim 1, characterized in that: One end of the output shaft (6) extends into the interior of the sliding groove (7), and the eight bearing seats (9) are symmetrically distributed in pairs.

4. The anti-derailment wheel set for a crane according to claim 1, characterized in that: The two rollers (10) are in contact with two sides of the outside of the track (3), and the bearing seat (9) is slidably connected to the sliding groove (7).

5. A crane anti-derailment wheel set according to claim 4, characterized in that: Two cylinders (11) are provided on the top of the crane frame (1), piston rods (12) are slidably connected inside the two cylinders (11), and support platforms (13) are fixedly connected at the bottoms of the two piston rods (12).

6. A crane anti-derailment wheel set according to claim 5, characterized in that: The two support platforms (13) are fixedly connected to the top of the crane frame (1), one end of the two piston rods (12) is fixedly connected to a long plate (14), and the bottom of the long plate (14) is fixedly connected to two sliding plates (15).

7. A crane anti-derailment wheel set according to claim 6, characterized in that: The bottoms of the four sliding plates (15) are fixedly connected to scraper rods (16), the two sides of the exterior of the crane frame (1) are fixedly connected to two connecting plates (17), the sliding plates (15) are slidably connected to the interior of the connecting plates (17), and the bottoms of the connecting plates (17) are fixedly connected to two supporting plates (18).

8. The anti-derailment wheel set for a crane according to claim 7, characterized in that: The two sides of the scraper rod (16) are slidably connected to the two support plates (18); the bottom of the connecting plate (17) is fixedly connected to a cleaning brush (19); the cleaning brush (19) is in contact with the surface of the track (3); and the cleaning brush (19) is in contact with the scraper rod (16).

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