Gantry crane walking mechanism

Abstract

The utility model relates to a gantry crane travelling mechanism, which is characterized in that firstly, the low gravity center design of a horizontal motor obviously improves the stability of the whole structure, when a gantry crane runs, the shaking and deviation of the motor are effectively reduced, the abnormal stress of a transmission part is reduced, the running of a transmission system is more stable and reliable, and the service life of equipment is prolonged; secondly, the connecting structure of the horizontal motor and the walking wheel box is simplified, efficient transmission of power is achieved through a transmission system composed of a driving gear, a first transmission gear and a secondary gear, and compared with a traditional vertical installation mode, the structural strength is higher, larger loads can be borne, and the service life is prolonged. The stable operation requirement of the heavy-load gantry crane in a high-strength operation environment is met; in addition, the space layout of the gantry crane walking mechanism is optimized through the horizontal motor installation mode, installation, debugging and later maintenance of equipment are facilitated, the maintenance cost is reduced, the operation efficiency and safety of the gantry crane are improved, and good economic benefits and application prospects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a gantry crane traveling mechanism. Background Technology

[0002] In existing gantry crane traveling mechanism technologies, a vertical motor mounting method is commonly used to drive the traveling wheels. For example, Chinese patent publications CN209024065U and CN203624840U both show the motor vertically mounted on the traveling wheel box. This vertical mounting structure has significant drawbacks: Firstly, the vertical motor has a high center of gravity. During gantry crane operation, especially during frequent starts, stops, turns, and complex working conditions, the motor is prone to swaying or even shifting due to uneven stress. This causes additional stress on the transmission components between the motor and the traveling wheels, greatly reducing the stability and reliability of the transmission system. Secondly, the vertical motor mounting method makes the connection structure between it and the traveling wheel box relatively complex, resulting in insufficient overall structural strength. This makes it difficult to withstand the long-term, high-intensity operation requirements of heavy-duty gantry cranes, increasing equipment maintenance costs and posing significant safety hazards. Utility Model Content

[0003] The present invention aims to at least partially solve one of the problems existing in the existing related technologies. To this end, the present invention proposes a gantry crane traveling mechanism.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A gantry crane traveling mechanism includes a traveling wheel box and traveling wheels disposed in the traveling wheel box. A horizontal motor is disposed at the upper end of the traveling wheel box. A drive gear is disposed on the output shaft of the horizontal motor. A secondary gear is disposed on the rotating shaft of the traveling wheel. A first transmission gear capable of meshing with the drive gear and the secondary gear is also rotatably installed in the traveling wheel box.

[0006] In some embodiments, two walking wheels are spaced apart, and a secondary gear is correspondingly provided on the shaft of each of the two walking wheels. A second transmission gear is also rotatably installed in the walking wheel box, and the second transmission gear is located between the two secondary gears and meshes with them respectively.

[0007] In some embodiments, a connecting seat is provided at the upper end of the wheel box.

[0008] In some embodiments, the connecting seat is located above the two wheels.

[0009] In some embodiments, a motor protection frame is provided on the wheel box.

[0010] In some embodiments, the wheel box includes side plates spaced apart to the left and right, a top plate connected to the upper end of the side plates, and end plates connected to the front and rear ends of the side plates. An integrally formed extension plate is provided on the lower side of each of the two side plates. The second transmission gear is rotatably mounted on the two extension plates. Bearing seats are provided on the front and rear sides of each of the two extension plates. Bearings that cooperate with the bearing seats are provided at both ends of the wheel.

[0011] In some embodiments, the bearing housing includes a first mounting portion and a second mounting portion, wherein the first mounting portion is fixedly connected to a side plate and the second mounting portion is fixedly connected to an extension plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This patented gantry crane traveling mechanism overcomes the shortcomings of existing technologies in several ways by horizontally mounting the motor on top of the traveling wheel box. Firstly, the low center of gravity design of the horizontal motor significantly improves the stability of the overall structure. During gantry crane operation, it effectively reduces motor swaying and offset, lowers abnormal stress on transmission components, and makes the transmission system run more smoothly and reliably, extending the equipment's service life. Secondly, the connection structure between the horizontal motor and the traveling wheel box is simplified. The transmission system, consisting of a drive gear, a first transmission gear, and a secondary gear, achieves efficient power transmission. Compared to the traditional vertical mounting method, this structure has higher strength and can withstand greater loads, meeting the stable operation requirements of heavy-duty gantry cranes in high-intensity working environments. Furthermore, the horizontal motor mounting method optimizes the spatial layout of the gantry crane traveling mechanism, facilitating equipment installation, commissioning, and subsequent maintenance, reducing maintenance costs, and improving the operating efficiency and safety of the gantry crane, demonstrating good economic benefits and application prospects. Attached Figure Description

[0014] Figure 1 This is a front view structural schematic diagram of the gantry crane traveling mechanism of this utility model.

[0015] Figure 2 This is a schematic diagram of the main structure of the gear transmission of this utility model.

[0016] Figure 3 This is a side view of the gear transmission structure of this utility model. Detailed Implementation

[0017] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0018] like Figures 1-3 The gantry crane traveling mechanism shown includes a traveling wheel box 1 and traveling wheels 2 disposed on the traveling wheel box 1. A horizontal motor 3 is disposed on the upper end of the traveling wheel box 1. A drive gear 4 is disposed on the output shaft of the horizontal motor 3. A secondary gear 5 is disposed on the rotating shaft of the traveling wheel 2. A first transmission gear 6 that can mesh with the drive gear 4 and the secondary gear 5 is also rotatably installed in the traveling wheel box 1.

[0019] Based on the above structure, a horizontal motor 3 is installed on the upper end of the traveling wheel box 1. Through the meshing of the drive gear 4, the first transmission gear 6, and the secondary gear 5, compared with the traditional vertical motor structure, the overall center of gravity is lowered, which improves the stability of the gantry crane traveling mechanism during operation, reduces abnormal stress on the transmission components caused by motor swaying and offset, and improves the reliability and service life of the transmission system. At the same time, the horizontal installation method simplifies the connection structure between the motor and the traveling wheel box, making power transmission more efficient, enhancing structural strength, and better adapting to the needs of heavy-duty operations.

[0020] See Figure 2 As shown, there are two walking wheels 2 spaced apart, and each of the two walking wheels 2 has a corresponding secondary gear 5 on its shaft. A second transmission gear 21 is also rotatably installed in the walking wheel box 1. The second transmission gear 21 is located between the two secondary gears 5 and meshes with them respectively.

[0021] By setting two traveling wheels 2 and achieving synchronous power transmission through the second transmission gear 21, the contact points between the gantry crane traveling mechanism and the track are increased, the pressure during equipment operation is distributed, and the load-bearing capacity and stability of the traveling mechanism are improved. At the same time, it can ensure that the two traveling wheels 2 rotate synchronously, avoiding problems such as the gantry crane running off course due to inconsistent traveling wheel speeds, and improving the accuracy and safety of gantry crane operation.

[0022] See Figure 1 As shown, a connecting seat 31 is provided at the upper end of the walking wheel box 1. The connecting seat 31 can be fixed to the walking wheel box 1 by welding, bolt connection or other means to ensure that the connection is firm and reliable and can withstand the weight and force of the subsequent connecting parts.

[0023] The connection seat 31 provides a convenient interface for connecting other components of the gantry crane with the traveling wheel box 1, which facilitates the assembly and disassembly of the overall structure of the gantry crane and reduces the installation difficulty and maintenance cost. At the same time, the reasonable setting of the connection seat 31 can optimize the overall layout of the gantry crane, make the force transmission between the components more reasonable, and improve the overall structural strength and stability of the gantry crane.

[0024] Furthermore, the connecting seat 31 is located above the two traveling wheels 2; thus, the load of the upper structure of the gantry crane can be more evenly transmitted to the two traveling wheels 2, avoiding the unbalanced force on the traveling wheels 2 caused by uneven load distribution, further improving the stability and reliability of the gantry crane operation, and also helping to extend the service life of components such as the traveling wheels.

[0025] In this utility model, a motor protection frame 51 is installed on the traveling wheel box 1 according to the external dimensions and installation position of the horizontal motor 3. The motor protection frame 51 can be assembled from metal plates by welding or bolting, and fixed to the traveling wheel box 1 by bolts and other connectors, enclosing the horizontal motor 3 within the protection frame. This effectively protects the horizontal motor 3 from collisions with external objects, improves the safety and reliability of motor operation, reduces motor failures caused by external factors, extends the service life of the motor, reduces equipment maintenance costs, ensures the normal operation of the gantry crane, and ensures that the motor's heat dissipation and normal operation are not affected.

[0026] See Figure 1 As shown, the wheel box 1 includes side plates 61 spaced apart on the left and right, a top plate 62 connected to the upper end of the two side plates 61, and an end plate 63 connected to the front and rear ends of the two side plates 61. An integrally formed extension plate 64 is provided on the lower side of each of the two side plates 61. The second transmission gear 21 is rotatably mounted on the two extension plates 64. Bearing seats 65 are provided on the front and rear sides of the two extension plates 64. Bearings 66 that cooperate with the bearing seats 65 are provided at both ends of the wheel 2.

[0027] Furthermore, the bearing housing 65 includes a first mounting portion 71 and a second mounting portion 72, the first mounting portion 71 being fixedly connected to the side plate 61, and the second mounting portion 72 being fixedly connected to the extension plate 64.

[0028] The left and right side plates 61, top plate 62, and front and rear end plates 63 of the wheel box 1 are assembled by welding or bolting. An extension plate 64 is integrally formed on the lower side of the two side plates 61, and a second transmission gear 21 is installed on the two extension plates 64 by rotating components such as bearings. When installing the bearing seat 65, the first mounting part 71 is fixedly connected to the side plate 61 by bolts or welding, and the second mounting part 72 is fixedly connected to the extension plate 64 by bolts or welding, ensuring that the bearing seat 65 is firmly installed on the wheel box 1. This enhances the installation stability and structural strength of the bearing seat 65, and can better withstand the various forces generated by the wheels during operation. Moreover, it makes reasonable use of space, optimizes the layout of the transmission system, and makes power transmission smoother.

[0029] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gantry crane traveling mechanism, comprising a traveling wheel box (1) and traveling wheels (2) disposed on the lower side of the traveling wheel box (1), characterized in that: A horizontal motor (3) is provided on the upper end of the walking wheel box (1). A drive gear (4) is provided on the output shaft of the horizontal motor (3). A secondary gear (5) is provided on the rotating shaft of the walking wheel (2). A first transmission gear (6) that can mesh with the drive gear (4) and the secondary gear (5) is also rotatably installed in the walking wheel box (1).

2. The gantry crane travelling mechanism according to claim 1, characterized in that: The walking wheels (2) are spaced apart, and each of the two walking wheels (2) has a corresponding secondary gear (5) on its shaft. A second transmission gear (21) is also rotatably installed in the walking wheel box (1). The second transmission gear (21) is located between the two gears (5) and meshes with them respectively.

3. The portal crane travelling mechanism according to claim 2, characterized in that: A connecting seat (31) is provided at the upper end of the walking wheel box (1).

4. The gantry crane travel mechanism of claim 3, wherein: The connecting seat (31) is located above the two walking wheels (2).

5. The portal crane travel mechanism of claim 1, wherein: A motor protection frame (51) is provided on the wheel box (1).

6. A gantry crane traveling mechanism according to claim 2, characterized in that: The wheel box (1) includes side plates (61) spaced apart on the left and right, a top plate (62) connected to the upper end of the two side plates (61), and end plates (63) connected to the front and rear ends of the two side plates (61). An integrally formed extension plate (64) is provided on the lower side of both side plates (61). The second transmission gear (21) is rotatably mounted on the two extension plates (64). Bearing seats (65) are provided on the front and rear sides of both extension plates (64). Bearings (66) that cooperate with the bearing seats (65) are provided at both ends of the wheel (2).

7. A portal crane travelling mechanism according to claim 6, characterised in that: The bearing housing (65) includes a first mounting part (71) and a second mounting part (72). The first mounting part (71) is fixedly connected to the side plate (61), and the second mounting part (72) is fixedly connected to the extension plate (64).

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