Walking mechanism for portal crane

Abstract

The utility model discloses a travelling mechanism for a portal crane, which relates to the technical field of cranes and comprises a travelling platform, travelling wheels, a travelling track, a driving mechanism and cleaning connecting rods, the portal crane is hinged on the travelling platform, the cleaning connecting rods are arranged on two sides of the travelling platform, the travelling wheels are mounted at the bottom end of the travelling platform, and the driving mechanism is mounted on the travelling track. The bottoms of the walking wheels are slidably connected with walking rails, the driving mechanism is installed in the walking platform, and the walking wheels are connected with the output end of the driving mechanism. The device is novel, safe and reliable, the maintenance cost is reduced, the contact area of the traveling wheels and the track is large, the derailing danger is reduced, the start-stop impact is small, the braking energy can be fully utilized, foundation settlement is compensated, and the impact noise is reduced.

Description

Technical Field

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

[0002] The traveling mechanism of a gantry crane consists of two end beams that travel on rails. Each end beam has a track wheel installed at its bottom for rolling contact with the rails. In existing technologies, the track wheels and rails are mostly exposed to outdoor working conditions. If there are obstacles on the rails, the track wheels will be obstructed during travel, easily causing the track wheels on one side of the traveling mechanism to derail, potentially leading to a crane fall or even a major safety accident, posing a significant safety hazard.

[0003] For example, the existing patent application with publication number CN221565562U not only suffers from a small contact area between the traveling wheels and the track, resulting in rapid wheel flange wear and a risk of derailment; it also has problems such as large start-stop impact, wasted braking energy, short mechanical life, and even the risk of track foundation settlement when handling large lifting objects for extended periods. Furthermore, maintenance is quite cumbersome. Therefore, there is an urgent need for a traveling mechanism for gantry cranes to solve the above-mentioned technical problems. Utility Model Content

[0004] In view of this, the present invention provides a traveling mechanism for a gantry crane. Compared with the traditional traveling mechanism for a gantry crane, the present invention is novel, safe and reliable, reduces maintenance costs, has a large contact area between the traveling wheels and the track, reduces the risk of derailment, has small start-stop impact, can make full use of braking energy, compensates for foundation settlement, and reduces impact noise.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A traveling mechanism for a gantry crane includes: a traveling platform, traveling wheels, traveling rails, a drive mechanism, and cleaning linkages. A gantry crane is hinged to the traveling platform. Cleaning linkages are provided on both sides of the traveling platform. Traveling wheels are installed at the bottom of the traveling platform. Traveling rails are slidably connected to the bottom of the traveling wheels. The drive mechanism is installed inside the traveling platform, and the traveling wheels are connected to the output end of the drive mechanism.

[0007] Furthermore, both sides of the walking wheel are provided with a rim, and a high-polymer wear-resistant liner is embedded in the annular groove between the two rims.

[0008] Furthermore, disc springs are circumferentially distributed inside the walking wheel.

[0009] Furthermore, the drive mechanism includes a generator, a battery, a variable frequency motor, a bidirectional inverter, and a brake. The generator and the variable frequency motor are both connected to the battery through the bidirectional inverter. The output end of the variable frequency motor is connected to the shaft of the walking wheel, and the brake is mounted on the shaft of the walking wheel.

[0010] Furthermore, solar panels are installed on both sides of the walking platform, and the solar panels are connected to the input end of the drive structure.

[0011] Furthermore, a steel pad is provided below the walking track, and the steel pad has threaded holes. The height of the walking track is adjusted by high-strength bolts.

[0012] Furthermore, a rubber damping layer is provided between the steel pad and the foundation.

[0013] The beneficial effects of this utility model are as follows:

[0014] This utility model combines high reliability, energy saving, and low maintenance costs. By using a double-layer wheel rim with a high-polymer wear-resistant liner, the contact area between the traveling wheel and the track is increased, reducing the risk of derailment and increasing the service life of the traveling wheel by 40%. The drive mechanism is used in conjunction with a solar panel, which is energy-saving and environmentally friendly, reducing power consumption by 15%-20%. In addition, the use of steel pads and high-strength bolts compensates for foundation settlement, and the rubber shock-absorbing layer reduces impact noise. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the walking wheel of this utility model;

[0018] Figure 3 This is a schematic diagram of the cooperation between the walking wheel and the track of this utility model;

[0019] In the figure:

[0020] 1-Walking platform; 2-Walking wheels; 3-Walking track; 4-Cleaning linkage; 5-Disc spring; 6-Steel pad; 7-Rubber shock-absorbing layer; 8-Solar panel. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0022] Please see the appendix Figure 1-3 This utility model provides a traveling mechanism for a gantry crane, including: a traveling platform 1, traveling wheels 2, a traveling track 3, a drive mechanism, and a cleaning link 4. The gantry crane is hinged on the traveling platform 1. The cleaning link 4 is provided on both sides of the traveling platform 1. The traveling wheels 2 are installed at the bottom of the traveling platform 1. The traveling track 3 is slidably connected to the bottom of the traveling wheels 2. The drive mechanism is installed inside the traveling platform 1. The traveling wheels 2 are connected to the output end of the drive mechanism. The cleaning link 4 can clear debris or small stones and other obstacles on the track before the track wheels travel, so as to avoid derailment accidents and improve track safety.

[0023] Preferably, the walking wheel 2 has rims on both sides, and a high-molecular wear-resistant liner is embedded in the annular groove between the two rims. The high-molecular wear-resistant liner can be polyurethane or ultra-high molecular weight polyethylene, which increases the contact area with the track and reduces the pressure. The double-rim walking wheel is combined with a disc spring 5 for buffering and improves the load-bearing capacity.

[0024] Preferably, disc springs 5 ​​are distributed circumferentially inside the walking wheel 2, which absorb vertical impact loads through elastic deformation, reduce vibration transmission, and increase the service life of the walking wheel 2.

[0025] Preferably, the drive mechanism includes a generator, a battery, a variable frequency motor, a bidirectional inverter, and a brake. The generator and the variable frequency motor are both connected to the battery through the bidirectional inverter. The output end of the variable frequency motor is connected to the shaft of the walking wheel 2. The brake is mounted on the shaft of the walking wheel 2. The variable frequency motor adopts vector control and achieves S-shaped acceleration and deceleration curves through PLC programming for smooth start and stop. When the walking structure brakes, the bidirectional inverter switches to generator mode, feeding electrical energy back to the variable frequency motor, achieving an energy saving rate of ≥15%.

[0026] Preferably, solar panels 8 are provided on both sides of the walking platform 1. The solar panels 8 are electrically connected to the input end of the battery. The solar panels 8 can provide power to the variable frequency motor, which is green and environmentally friendly and reduces operating costs.

[0027] Preferably, a steel pad 6 is provided below the walking track 3. The steel pad 6 has threaded holes. The height of the walking track 3 is adjusted by high-strength bolts to compensate for foundation settlement.

[0028] Preferably, a rubber damping layer 7 is provided between the steel pad 6 and the foundation to reduce impact noise. The combination of the disc spring 5 and the rubber damping layer 7 reduces the maintenance frequency by 80%.

[0029] The specific method of using this utility model is as follows:

[0030] The gantry crane is hinged above the traveling platform 1. The variable frequency motor is started to control the traveling mechanism to travel on the traveling track 3. When foundation compensation is required, the height of the pad is adjusted by high-strength bolts to achieve the compensation standard.

[0031] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A traveling mechanism for a gantry crane, characterized in that, include: The system includes a walking platform (1), walking wheels (2), walking rails (3), a drive mechanism, and cleaning linkages (4). A gantry crane is hinged on the walking platform (1). Cleaning linkages (4) are provided on both sides of the walking platform (1). The walking wheels (2) are installed at the bottom of the walking platform (1). The walking rails (3) are slidably connected to the bottom of the walking wheels (2). The drive mechanism is installed inside the walking platform (1). The walking wheels (2) are connected to the output end of the drive mechanism.

2. The traveling mechanism for a gantry crane according to claim 1, characterized in that, Both sides of the walking wheel (2) are provided with wheel rims, and a polymer wear-resistant liner is embedded in the annular groove between the two wheel rims.

3. The traveling mechanism for a gantry crane according to claim 1, characterized in that, Disc springs (5) are distributed circumferentially inside the walking wheel (2).

4. The traveling mechanism for a gantry crane according to claim 1, characterized in that, The drive mechanism includes a generator, a battery, a variable frequency motor, a bidirectional inverter and a brake. The generator and the variable frequency motor are both connected to the battery through the bidirectional inverter. The output end of the variable frequency motor is connected to the shaft of the walking wheel (2). The brake is installed on the shaft of the walking wheel (2).

5. A traveling mechanism for a gantry crane according to claim 4, characterized in that, The walking platform (1) is equipped with solar panels (8) on both sides, and the solar panels (8) are electrically connected to the input end of the battery.

6. The traveling mechanism for a gantry crane according to claim 1, characterized in that, A steel pad (6) is provided below the walking track (3). The steel pad (6) has threaded holes. The height of the walking track (3) is adjusted by high-strength bolts.

7. A traveling mechanism for a gantry crane according to claim 6, characterized in that, A rubber damping layer (7) is provided between the steel pad (6) and the foundation.

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