Drive axle device of crane

Abstract

The utility model discloses a drive axle device of a crane, which comprises rails, a drive axle body is arranged between the rails, two ends of the drive axle body are provided with drive wheels and roll on the rails, and two sides of the upper end of the drive axle body are fixedly connected with a connecting frame. A second auxiliary fixing device is arranged in the drive axle body to press and fix one side of the track, and a first auxiliary fixing device is arranged on the connecting frame to press and fix the other side of the track. The utility model belongs to the technical field of crane drive axles, and particularly relates to a drive axle device of a crane, which is used for solving the problems that a drive axle of a bridge crane in the prior art is easy to derail from a track when being impacted when walking on the track and is very inconvenient to be mounted on the track again.

Description

A drive axle device for a crane Technical Field

[0001] This utility model belongs to the field of crane drive axle technology, specifically referring to a crane drive axle device. Background Technology

[0002] The drive axle of a crane generally includes a bridge housing, a main reducer, a differential, half shafts, hubs, and wheels. The wheels travel on dedicated tracks, enabling the bridge crane to move.

[0003] Traditional crane drive axles have wheels similar to train wheels and I-beam rails, but they have some shortcomings: when the drive wheels travel on the rails, there is a lack of anti-derailment measures. If the drive axle hits both ends due to human error, the drive wheels are prone to derailing. Reinstalling the drive wheels on the rails is very troublesome. Therefore, improvements are needed. Summary of the Invention

[0004] The technical problem this invention aims to solve is that, in the prior art, the drive bridge of a bridge crane is prone to derailment when it is impacted while traveling on the track, and it is very inconvenient to reinstall it on the track.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: a drive bridge device for a crane, including rails, a drive bridge body between the rails, drive wheels at both ends of the drive bridge body that roll on the rails, connecting frames fixed to both sides of the upper end of the drive bridge body, an auxiliary fixing device 2 provided in the drive bridge body to press and fix one side of the rails, and an auxiliary fixing device 1 provided on the connecting frame to press and fix the other side of the rails.

[0006] Furthermore, the auxiliary fixing device includes a hydraulic cylinder, which is fixedly connected to the connecting frame. The output end of the hydraulic cylinder is provided with a frame, and a pressure roller is rotatably provided in the frame. Two sets of guide rods are symmetrically provided on the end face of the frame. The guide rods pass through the connecting frame and have an end plate at their outer ends.

[0007] Furthermore, the auxiliary fixing device 2 includes a fixing plate, which is fixedly connected to the drive axle body. A hydraulic cylinder 2 is fixedly connected to the fixing plate. A frame 2 is provided at the output end of the hydraulic cylinder 2. A pressure roller 2 rotates in the frame 2. Two sets of guide rods 2 are provided on the frame 2 symmetrically connected to the hydraulic cylinder 2. The guide rods 2 pass through the drive axle body and through the fixing plate.

[0008] Furthermore, the first and second pressure rollers are of equal length and have the same height as the groove in the track.

[0009] Furthermore, the width of the connecting frame is smaller than the width of the drive axle.

[0010] Furthermore, the left and right range of motion of the first frame and the second frame are such that the first or second pressure roller will not touch the track when it moves upward.

[0011] Furthermore, the drive axle body is equipped with a control module, which is connected to the control signal of the power source hydraulic station of hydraulic cylinder one and hydraulic cylinder two.

[0012] The beneficial effects achieved by adopting the above-described structure are as follows:

[0013] 1. This utility model, by setting an auxiliary fixing device, a hydraulic cylinder, a frame, and a pressure roller, can press and fix the side wall of the track. At the same time, it can also move in the groove of the track side wall as the drive wheel moves, thus achieving a good purpose of preventing derailment.

[0014] 2. This utility model uses an auxiliary fixing device 2, a hydraulic cylinder 2 to push the frame 2, and a pressure roller 2 to press and fix the other side of the track, thereby comprehensively preventing the drive axle from derailing. Attached Figure Description

[0015] Figure 1 is an overall structural diagram of the drive bridge device of a crane according to the present invention;

[0016] Figure 2 is a cross-sectional structural diagram of the drive bridge device of a crane according to the present invention;

[0017] Figure 3 is a side view of the drive bridge device of a crane according to the present invention;

[0018] Figure 4 is a magnified view of part A in Figure 1.

[0019] The components are as follows: 1. Track; 2. Drive axle; 3. Drive wheel; 4. Connecting frame; 5. Second auxiliary fixing device; 6. First auxiliary fixing device; 7. First hydraulic cylinder; 8. First frame; 9. First pressure roller; 10. First guide rod; 11. End plate; 12. Fixing plate; 13. Second hydraulic cylinder; 14. Second frame; 15. Second pressure roller; 16. Second guide rod; 17. Control module. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] As shown in Figures 1-4, the present invention discloses a drive bridge device for a crane, including a track 1, a drive bridge body 2 between the tracks 1, drive wheels 3 at both ends of the drive bridge body 2 and rolling on the track 1, connecting frames 4 fixedly connected to the upper ends of the drive bridge body 2, the width of the connecting frames 4 being smaller than the width of the drive bridge body 2, an auxiliary fixing device 2 5 provided inside the drive bridge body 2 to press and fix one side of the track 1, and an auxiliary fixing device 6 provided on the connecting frames 4 to press and fix the other side of the track 1.

[0023] As shown in Figures 1 and 4, the auxiliary fixing device 6 includes a hydraulic cylinder 7, which is fixed to the connecting frame 4. The output end of the hydraulic cylinder 7 is provided with a frame 8, and a pressure roller 9 is rotatably provided in the frame 8. Two sets of guide rods 10 are symmetrically provided on the end face of the hydraulic cylinder 7. The guide rods 10 pass through the connecting frame 4 and have an end plate 11 at their outer ends. By pushing the frame 8 with the hydraulic cylinder 7, the pressure roller 9 is pressed into the groove of the track 1, which can prevent the drive bridge body 2 from being impacted and detached from the track 1.

[0024] As shown in Figures 1-2, the auxiliary fixing device 2 5 includes a fixing plate 12, which is fixedly connected to the drive axle 2. A hydraulic cylinder 2 13 is fixedly connected to the fixing plate 12. The output end of the hydraulic cylinder 2 13 is provided with a frame 2 14. A pressure roller 2 15 rotates in the frame 2 14. The lengths of the pressure roller 1 9 and the pressure roller 2 15 are equal and their heights are equal to the groove height of the track 1. The left and right range of motion of the frame 1 8 and the frame 2 14 is such that the pressure roller 1 9 or the pressure roller 2 15 will not touch the track 1 when it moves upward. The hydraulic cylinder 2 13 on the frame 2 14 is provided with two sets of guide rods 2 16. The guide rods 2 16 pass through the drive axle 2 and through the fixing plate 12. The other side of the track 1 can be pressed and fixed through the pressure roller 2 15.

[0025] As shown in Figure 2, the drive axle 2 is provided with a control module 17, which is connected to the control signal of the power source hydraulic station of hydraulic cylinder 1 7 and hydraulic cylinder 2 13.

[0026] In practical use, the hydraulic cylinder 7 drives the frame 8, and the pressure roller 9 presses against the side groove of the track 1. The guide rod 10 can ensure that the horizontal movement of the frame 8 is stable. The pressure roller 9 is fastened in the side wall groove of the track 1. By starting the hydraulic cylinder 13, the frame 14 pushes the pressure roller 15 to fasten in the groove on the other side of the track 1, thereby preventing the drive bridge 2 from detaching from the track 1.

[0027] The drive wheel 3 is controlled by the control module 17 to move on the track 1. The pressure roller 9 and the pressure roller 15 roll on the two side walls of the track 1 respectively. Even if the drive bridge 2 is hit by the two ends of the track 1 due to the operator's misoperation, the drive wheel 3 of the drive bridge 2 will not be separated from the track 1, thus achieving a good derailment prevention effect.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A drive bridge device for a crane, comprising rails (1), wherein a drive bridge body (2) is disposed between the rails (1), characterized in that: The drive bridge body (2) has drive wheels (3) at both ends and rolls on the track (1). The upper ends of the drive bridge body (2) are fixed with connecting frames (4). The drive bridge body (2) is provided with an auxiliary fixing device (5) to press one side of the track (1). The connecting frame (4) is provided with an auxiliary fixing device (6) to press the other side of the track (1).

2. The drive axle device for a crane according to claim 1, characterized in that: The auxiliary fixing device 1 (6) includes a hydraulic cylinder 1 (7), which is fixed to the connecting frame (4). The output end of the hydraulic cylinder 1 (7) is provided with a frame 1 (8), and a pressure roller 1 (9) is rotatably provided in the frame 1 (8). Two sets of guide rods 1 (10) are provided on the end face of the hydraulic cylinder 1 (7), and the guide rods 1 (10) pass through the connecting frame (4) and have an end plate (11) at their outer ends.

3. The drive axle device for a crane according to claim 2, characterized in that: The auxiliary fixing device 2 (5) includes a fixing plate (12), which is fixed in the drive axle body (2). A hydraulic cylinder 2 (13) is fixed on the fixing plate (12). A frame 2 (14) is provided at the output end of the hydraulic cylinder 2 (13). A pressure roller 2 (15) rotates in the frame 2 (14). Two sets of guide rods 2 (16) are provided on the symmetrical hydraulic cylinder 2 (13) on the frame 2 (14). The guide rods 2 (16) pass through the drive axle body (2) and through the fixing plate (12).

4. The drive axle device for a crane according to claim 3, characterized in that: The first pressure roller (9) and the second pressure roller (15) are of equal length and have the same height as the groove of the track (1).

5. The drive axle device for a crane according to claim 1, characterized in that: The width of the connecting frame (4) is smaller than the width of the drive axle (2).

6. The drive axle device for a crane according to claim 3, characterized in that: The left and right range of motion of the frame one (8) and the frame two (14) is such that when the pressure roller one (9) or the pressure roller two (15) moves upward, it will not touch the track (1).

7. The drive axle device for a crane according to claim 1, characterized in that: The drive axle (2) is provided with a control module (17), which is connected to the power source hydraulic station control signal of hydraulic cylinder one (7) and hydraulic cylinder two (13).

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