Chainless driving structure for cart operation of rubber-tyred portal crane

Abstract

The utility model relates to the technical field of rubber-tyred gantry cranes, and discloses a chainless driving structure for cart operation of a rubber-tyred gantry crane, which comprises a support frame, a hub arranged on the outer side of the support frame, a motor mounted at the top of the support frame close to the inner side, and a driving axle arranged in the support frame and corresponding to the hub, the output end of the drive axle is connected with the hub flange, and the input end of the drive axle is connected with the output end of the motor through a universal joint; a new frame structure, namely an inverted-L-shaped supporting frame is adopted, the input end of a drive axle is connected with the output end of a motor through a universal joint, current chain wheel and chain transmission is replaced, the motor runs to drive the axle directly through the universal joint, the axle is fixed to a frame, and motor torque at the input end is directly transmitted to a hub tire; the device has obvious advantages in the aspects of improving the running stability of a cart, avoiding oil pollution environment pollution, reducing the daily maintenance workload and the like; the problems of large chain transmission impact and inaccurate operation positioning can be solved, and the requirement for automatic operation is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the tire type gantry crane, especially a tire type gantry crane trolley running chainless drive structure. BACKGROUND

[0002] The container tire type gantry crane (hereinafter referred to as the tire crane) is the mainstream equipment of the container wharf yard, and has lower investment in the early stage of wharf infrastructure and power supply cost compared with the rail-mounted crane, and has mobility and flexibility such as transfer, and is the primary consideration object of the new wharf yard equipment. The traditional eight-wheel tire crane trolley mostly adopts eight rubber tires, and the driving of the tire crane trolley is realized through a motor, a reduction box and a chain wheel and chain, and the driving form has existed for many years. With the implementation of new technologies such as yard automation and remote control technology, and the requirement of the green wharf, the driving form using the chain wheel and chain has problems such as inaccurate positioning, large impact, oil pollution, large maintenance workload, short service life of the chain, and low service life of the entire transmission system. CONTENT OF THE UTILITY MODEL

[0003] In view of the deficiencies in the prior art, the utility model aims at providing a tire type gantry crane trolley running chainless drive structure, which has obvious advantages and positive effects in improving the trolley running stability, avoiding oil pollution, reducing the daily maintenance workload (especially avoiding regular lubrication and tension adjustment of the chain).

[0004] In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme:

[0005] A tire type gantry crane trolley running chainless drive structure, comprising a support frame, a hub is arranged on the outer side of the support frame, a motor is installed on the top of the support frame close to the inner side, a drive axle is arranged at the position corresponding to the hub in the inner part of the support frame, the output end of the drive axle is connected with the hub flange, and the input end of the drive axle is connected with the output end of the motor through a universal joint.

[0006] As a further implementation mode, the support frame is in inverted L shape, comprising an integral horizontal frame and a vertical frame.

[0007] As a further implementation mode, the hub is arranged on the outer side of the vertical frame, and the hub axis is perpendicular to the vertical frame.

[0008] As a further implementation mode, the hub is arranged below the horizontal frame, a tire is arranged on the outer side of the hub, and the tire away from the vertical frame is flush with the end part of the horizontal frame.

[0009] As a further implementation mode, the motor is located directly above the vertical frame, the motor is fixed through a horizontal flange, and the output end of the motor extends into the inner part of the vertical frame.

[0010] As a further implementation, the drive axle is fixed to the inner wall of the vertical frame by a vertical flange, and the output end of the drive axle extends out of the vertical frame.

[0011] As a further implementation, the drive axle is an orthogonal drive axle.

[0012] As a further implementation, the input end of the drive axle and the output end of the motor are connected by a universal joint and a drive shaft.

[0013] As a further implementation, the input end of the drive bridge is connected to a first universal joint, and the output end of the motor is provided with a second universal joint. The first universal joint and the second universal joint are connected by a drive shaft.

[0014] As a further implementation, the motor is located at the top of the horizontal frame near one end of the vertical frame, and the top of the horizontal frame away from the motor is used to cooperate with the balance beam through a slewing support.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model adopts a new frame structure, namely an inverted L-shaped support frame. It utilizes a universal joint to connect the input end of the drive axle and the output end of the motor, replacing the current sprocket and chain drive. The motor runs directly through the universal joint to drive the axle. The axle is fixed to the frame, and the motor torque at the input end is directly transmitted to the wheel hub and tire, realizing the operation of the trolley. It has significant advantages and positive impacts in improving the stability of the trolley operation, avoiding oil pollution, and reducing the workload of daily maintenance (especially avoiding the need for regular chain lubrication and tension adjustment). It can solve the problems of large impact and inaccurate positioning of chain drive, which is conducive to the requirements of automated operation.

[0017] 2. In this embodiment, the vertical frame provides mounting points for the drive frame, while the inverted L-shaped support frame facilitates the placement of the wheels on the outside of the vertical frame and below the horizontal frame, resulting in a reasonable spatial arrangement. Compared with the inverted U-shaped support frame of the prior art, it can shorten the overall width and reduce costs. In addition, the vertical frame provides space for the installation of universal joints and drive shafts, and the transmission structure is not exposed, effectively solving the problem of oil splashing and polluting the surrounding environment in the prior art. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1 This is a schematic diagram of the chainless drive structure in an embodiment of this utility model;

[0020] Figure 2This is a side view of the chainless drive structure in an embodiment of this utility model;

[0021] Figure 3 This is an isometric schematic diagram of the chainless drive structure in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of a sprocket and chain transmission structure used in existing tire-mounted gantry cranes.

[0023] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0024] The components are: 1. support frame, 2. motor, 3. universal joint, 4. drive axle, 5. tire, 6. balance beam, 11. horizontal frame, 12. vertical frame; 7. sprocket, 8. chain, 9. inverted U-shaped support frame. Detailed Implementation

[0025] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0026] Existing technologies such as Figure 4 As shown, the tire is installed inside the inverted U-shaped support frame 9. The tire crane is driven by a motor, a gearbox, a sprocket 7, and a chain 8. However, the sprocket and chain drive method has problems such as inaccurate positioning, large impact, oil pollution, and large maintenance workload. In addition, the chain has a short lifespan, resulting in a short lifespan for the entire transmission system.

[0027] Example 1

[0028] In a typical embodiment of this utility model, refer to Figures 1-3 As shown, a chainless drive structure for the operation of the trolley of a tire-mounted gantry crane includes a support frame 1, a wheel hub on the outer side of the support frame 1, a motor 2 installed on the top of the support frame near the inner side, a drive axle 4 located inside the support frame 1 corresponding to the wheel hub position, the output end of the drive axle being connected to the wheel hub flange, and the input end of the drive axle 4 being connected to the output end of the motor via a universal joint 3.

[0029] like Figures 1-3 As shown, the support frame is inverted L-shaped and includes a horizontal frame 11 and a vertical frame 12 connected as one piece, wherein the vertical frame 12 is located on the inner side and one end of the horizontal frame 11 extends outward.

[0030] by Figure 1Taking the view direction as an example, the left side of the vertical frame 12 is the outer side, the hub is located on the outer side of the vertical frame 12, the hub axis is perpendicular to the vertical frame 12, the outer side of the hub is equipped with a tire 5, the hub is located below the left end of the horizontal frame, and the side of the tire away from the vertical frame is flush with the left end of the horizontal frame.

[0031] like Figures 1-3 As shown, motor 2 is located directly above vertical frame 12. Motor 2 is fixed to the upper surface of vertical frame 12 via a horizontal flange. The output end of motor 2 extends into the interior of vertical frame 12, and the interior of vertical frame 12 provides space for a transmission component. It can be understood that in this embodiment, the right end of horizontal frame 11 and the top of vertical frame 12 refer to the same point, used for mounting motor 2. The top end of horizontal frame 11, away from motor 2, is used to cooperate with balance beam 6 via a slewing support.

[0032] like Figure 1 As shown, the drive axle 4 is fixed to the inner wall of the vertical frame 12 by a vertical flange. The output end of the drive axle 4 extends outward from the vertical frame and connects to the wheel hub flange. The drive axle 4 is an orthogonal type drive axle. The output end of the drive axle 4 can drive the wheel hub to rotate, synchronously realizing the rotation of the tire 5.

[0033] In this embodiment, the motor output end extends downward from the top of the vertical frame into the interior of the vertical frame 12, and the input end of the drive bridge 4 is connected to the output end of the motor 2 through a universal joint 3 and a drive shaft.

[0034] Specifically, the input end of drive axle 4 is connected to the first universal joint, and the output end of motor 2 is equipped with a second universal joint. The first and second universal joints are connected by a drive shaft. The universal joint consists of two sets of universal joint forks and one set of cross shafts. The motor drives the axle directly through the universal joints. The axle is fixed to the frame, and the motor torque at the input end is directly transmitted to the wheel hubs and tires, enabling the vehicle to move.

[0035] The trolley traveling structure of the tire-mounted gantry crane in this embodiment adopts a new frame structure, namely an inverted L-shaped support frame. It utilizes a universal joint connection between the drive axle input end and the motor output end, replacing the current sprocket and chain drive. This structure offers significant advantages and positive impacts in improving the trolley's running stability, avoiding oil pollution, and reducing daily maintenance workload (especially avoiding regular chain lubrication and tension adjustment). The transmission structure of this embodiment solves the problems of high impact and inaccurate positioning associated with chain drives, facilitating automated operation.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A chainless drive structure for the trolley operation of a tire-mounted gantry crane, characterized in that, It includes a support frame, with a wheel hub on the outside of the support frame. A motor is installed on the top of the support frame near the inside. A drive axle is located inside the support frame at the position corresponding to the wheel hub. The output end of the drive axle is connected to the wheel hub flange, and the input end of the drive axle is connected to the output end of the motor via a universal joint.

2. The chainless drive structure for the operation of the trolley of a tire-mounted gantry crane according to claim 1, characterized in that, The support frame is inverted L-shaped and includes an integrated horizontal frame and a vertical frame.

3. The chainless drive structure for the operation of the trolley of a tire-mounted gantry crane according to claim 2, characterized in that, The hub is located on the outside of the vertical frame, and the hub axis is perpendicular to the vertical frame.

4. The chainless drive structure for the operation of the trolley of a tire-mounted gantry crane according to claim 2, characterized in that, The hub is located below the horizontal frame, and a tire is provided on the outside of the hub. The side of the tire away from the vertical frame is flush with the end of the horizontal frame.

5. The chainless drive structure for the operation of the trolley of a tire-mounted gantry crane according to claim 2, characterized in that, The motor is located directly above the vertical frame and is fixed by a horizontal flange. The motor output end extends into the interior of the vertical frame.

6. The chainless drive structure for the operation of the trolley of a tire-mounted gantry crane according to claim 5, characterized in that, The drive axle is fixed to the inner wall of the vertical frame by a vertical flange, and the output end of the drive axle extends out of the vertical frame.

7. The chainless drive structure for the operation of the trolley of a tire-mounted gantry crane according to claim 1, characterized in that, The drive axle is an orthogonal drive axle.

8. The chainless drive structure for the operation of the trolley of a tire-mounted gantry crane according to claim 1, characterized in that, The input end of the drive axle and the output end of the motor are connected by a universal joint and a drive shaft.

9. The chainless drive structure for the operation of the trolley of a tire-mounted gantry crane according to claim 8, characterized in that, The input end of the drive axle is connected to a first universal joint, and the output end of the motor is provided with a second universal joint. The first universal joint and the second universal joint are connected by a drive shaft.

10. The chainless drive structure for the operation of the trolley of a tire-mounted gantry crane according to claim 2, characterized in that, The motor is located at the top of the horizontal frame near one end of the vertical frame, and the top of the horizontal frame away from the motor is used to cooperate with the balance beam through a slewing support.

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