Four-foot synchronous base lifting structure of movable lamp trolley

Abstract

The utility model relates to a movable lamp car four-foot synchronous base lifting structure which comprises a lamp car chassis, four lead screw lifters distributed in a rectangular mode are arranged on the two sides of the lamp car chassis, foot supports are fixedly connected to the lower ends of lead screws of the lead screw lifters, and a motor is arranged in the middle of the bottom of the lamp car chassis. The motor is in transmission connection with the four lead screw lifters at the same time through a transmission mechanism. The four-foot synchronous base lifting structure of the movable lamp trolley is reasonable in design, the structure is simplified, the overall weight is reduced, portability is improved, remarkable advantages are shown in the aspect of maintenance and management, potential problems of oil leakage, pressure relief and the like possibly existing in a hydraulic structure are avoided through the lead screw lifting machine, maintenance cost is reduced, the service life of equipment is prolonged, and the service life of the equipment is prolonged. And meanwhile, the simple mechanical structure is also convenient for troubleshooting and daily maintenance, and the overall reliability and stability of the equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of mobile lighting vehicles, and in particular to a four-legged synchronous lifting structure for mobile lighting vehicles. Background Technology

[0002] Most commercially available mobile lighting vehicles use hydraulic outriggers for lifting, resulting in a relatively complex structure with more hydraulic components, piping, and control systems. This complexity not only increases the difficulty of manufacturing and assembly but also raises the technical requirements for users and maintenance personnel. Furthermore, due to this structural complexity, hydraulic outriggers are more prone to malfunctions during long-term use, such as wear, leakage, and blockages in hydraulic components. These malfunctions require diagnosis and repair by professional technicians, thus leading to relatively high maintenance costs. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a four-legged synchronous lifting structure for a mobile lighting vehicle, which simplifies the structure, reduces the overall weight, reduces maintenance costs, and improves the overall reliability and stability of the equipment.

[0004] This utility model is achieved by the following scheme: a four-legged synchronous lifting structure for a mobile lighting vehicle, including a lighting vehicle chassis, four screw jacks arranged in a rectangular pattern on both sides of the lighting vehicle chassis, the lower end of the screw of each screw jack being fixedly connected to a foot support, and a motor being provided in the middle of the bottom of the lighting vehicle chassis, the motor being simultaneously connected to the four screw jacks through a transmission mechanism.

[0005] Furthermore, the transmission mechanism includes a front gearbox, an intermediate gearbox, and a rear gearbox located at the bottom of the lighting vehicle chassis. Each of the front gearbox, intermediate gearbox, and rear gearbox has one power input shaft and two power output shafts. The front gearbox is connected to the screw jacks on both sides in front, and the rear gearbox is connected to the screw jacks on both sides in rear. The intermediate gearbox is connected to the front gearbox and the rear gearbox via a longitudinal transmission shaft. The power input shaft of the intermediate gearbox is coaxially connected to the main shaft of the motor.

[0006] Furthermore, the front gearbox, intermediate gearbox, and rear gearbox are each equipped with three bevel gears. The three bevel gears are respectively mounted on the power input shaft and two power output shafts, and the bevel gears on the two power output shafts mesh with the bevel gears on the power input shaft.

[0007] Furthermore, the screw jack includes a screw and a screw seat, and the screw seat is provided with a meshing worm gear; the screw passes through the screw seat from top to bottom, and the worm gear is provided with a threaded hole in the middle for the screw to pass through and mesh with it.

[0008] Furthermore, each screw jack is provided with a fixed bracket fixedly connected to the chassis of the lighting vehicle on its side. The screw seat is fixedly connected to the lower side of the fixed bracket, and a screw sleeve located above the screw seat and fitted onto the screw is fixedly connected to the fixed bracket.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The four-legged synchronous base lifting structure of the mobile light vehicle of the present invention has a reasonable design, which simplifies the structure, reduces the overall weight, improves portability, and shows significant advantages in maintenance and management. The screw jack avoids potential problems such as oil leakage and pressure relief that may exist in hydraulic structures, reduces maintenance costs, and extends the service life of the equipment. At the same time, its simple mechanical structure also facilitates fault diagnosis and daily maintenance, improving the overall reliability and stability of the equipment.

[0010] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the lifting state of the mobile light vehicle according to an embodiment of this utility model;

[0012] Figure 2 This is a schematic diagram of the mobile light vehicle descending in an embodiment of this utility model;

[0013] Figure 3 This is a schematic diagram of the lifting structure of the base in the raised state according to an embodiment of this utility model;

[0014] Figure 4 This is a schematic diagram of the lowering state of the base lifting structure according to an embodiment of this utility model;

[0015] Figure 5 This is a schematic diagram of the transmission mechanism in the lifting state according to an embodiment of this utility model;

[0016] Figure 6 This is a schematic diagram of the transmission mechanism in the descending state according to an embodiment of this utility model;

[0017] Figure 7 This is a schematic diagram of the connection between the motor and the intermediate gearbox in an embodiment of this utility model;

[0018] The numbers in the diagram are as follows: 1-Lighting vehicle chassis, 2-Screw jack, 3-Foot support, 4-Motor, 5-Front gearbox, 6-Intermediate gearbox, 7-Rear gearbox, 8-Transverse drive shaft, 9-Longitudinal drive shaft, 10-Bevel gear, 11-Screw, 12-Screw seat, 13-Fixed bracket, 14-Screw sleeve, 15-Mobile lighting vehicle. Detailed Implementation

[0019] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] like Figures 1-7 As shown, a four-legged synchronous lifting structure for a mobile lighting vehicle includes a lighting vehicle chassis 1. Four rectangularly distributed screw jacks 2 are located on both sides of the chassis 1. The lower ends of the screws of each screw jack are fixedly connected to foot supports 3. A motor 4 is located in the center of the bottom of the chassis, and the motor is simultaneously connected to the four screw jacks via a transmission mechanism. This lifting structure uses a single motor to drive the four foot supports to lift synchronously, offering high flexibility and convenience. Compared to traditional hydraulic foot supports, it has a simpler and clearer structural feature. It not only reduces overall weight and improves portability but also demonstrates significant advantages in maintenance and management. The screw jacks avoid potential problems such as oil leakage and pressure loss that may exist in hydraulic structures, reducing maintenance costs and extending equipment lifespan. Furthermore, its simple mechanical structure facilitates troubleshooting and daily maintenance, improving the overall reliability and stability of the equipment.

[0022] In this embodiment, the transmission mechanism includes a front gearbox 5, an intermediate gearbox 6, and a rear gearbox 7 located at the bottom of the lighting vehicle chassis. Each of the front gearbox, intermediate gearbox, and rear gearbox has one power input shaft and two power output shafts. A transverse transmission shaft 8 is connected between the front gearbox and the screw jacks on both sides in front, and between the rear gearbox and the screw jacks on both sides in rear. A longitudinal transmission shaft 9 is connected between the intermediate gearbox and the front and rear gearboxes. The power input shaft of the intermediate gearbox is coaxially connected to the main shaft of the motor.

[0023] In this embodiment, the front gearbox, the intermediate gearbox and the rear gearbox are each provided with three bevel gears 10. The three bevel gears are respectively mounted on the power input shaft and the two power output shafts. The bevel gears on the two power output shafts mesh with the bevel gears on the power input shaft.

[0024] In this embodiment, the connection between the shafts in the transmission mechanism is achieved by using connecting flanges to realize coaxial connection.

[0025] In this embodiment, the screw jack 2 includes a screw 11 and a screw seat 12. The screw seat is provided with a meshing worm gear. The screw passes through the screw seat from top to bottom, and the worm gear is provided with a threaded hole in the middle for the screw to pass through and mesh with it.

[0026] The motor on the base serves as the power source. The motor, via an intermediate gearbox using bevel gears, changes the transmission direction, driving the two longitudinal drive shafts to rotate. Power is then transmitted to the two gearboxes, which in turn change direction via bevel gears, driving the lead screw seats at the four corners via two transverse drive shafts. The lead screw seats employ worm gear transmission. The rotation of the worm drives the worm wheel, whose threaded hole matches the vertical lead screw thread. The rotation of the worm wheel causes the vertical lead screw to move up and down.

[0027] In this embodiment, in order to prevent the lead screw of the screw jack from rotating, a limiting groove needs to be opened on the side of the lead screw along the axial direction, and a limiting block that cooperates with the limiting groove is set in the seat hole at the upper or lower end of the lead screw seat, so that the lead screw can only move up and down and cannot rotate.

[0028] In this embodiment, each screw jack is provided with a fixed bracket 13 fixedly connected to the chassis of the lighting vehicle. The screw seat is fixedly connected to the lower side of the fixed bracket, and a screw sleeve 14 located above the screw seat and fitted onto the screw is fixedly connected to the fixed bracket.

[0029] In terms of transportation, the mobile lighting vehicle's four-legged synchronous lifting base is ingeniously designed. While ensuring compatibility with the truck's cargo box height, the base can be directly raised to a predetermined height by adjusting the lifting stroke of the lead screw, allowing the truck to seamlessly dock and enter. This process eliminates the need for forklifts or other auxiliary handling equipment, significantly improving logistics efficiency and reducing transfer costs and operational complexity. In terms of usage, given the precise characteristics of the lead screw drive mechanism, the base can perform precise and flexible lifting operations according to the height requirements of the actual working scenario. The screw's helical drive principle ensures high accuracy and repeatability in height positioning during the lifting process. This feature not only meets the customized needs of diverse working environments but also improves the level of precise control of the work process.

[0030] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0031] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0032] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0033] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A four-legged synchronous lifting structure for a mobile lighting vehicle, characterized in that: The system includes a lighting vehicle chassis, on both sides of which are equipped with four screw jacks arranged in a rectangular pattern. The lower end of the screw of each screw jack is fixedly connected to a foot support. A motor is located in the center of the bottom of the lighting vehicle chassis, and the motor is simultaneously connected to the four screw jacks through a transmission mechanism. The transmission mechanism includes a front gearbox, a middle gearbox, and a rear gearbox located at the bottom of the lighting vehicle chassis. Each of the front, middle, and rear gearboxes has one power input shaft and two power output shafts. A transverse transmission shaft is connected between the front gearbox and the screw jacks on both sides in front, and between the rear gearbox and the screw jacks on both sides in rear. A longitudinal transmission shaft is connected between the middle gearbox and the front and rear gearboxes. The power input shaft of the middle gearbox is coaxially connected to the main shaft of the motor.

2. The mobile light vehicle four-legged synchronous base lifting structure according to claim 1, characterized in that: The front gearbox, intermediate gearbox, and rear gearbox each contain three bevel gears, which are respectively mounted on the power input shaft and two power output shafts. The bevel gears on the two power output shafts mesh with the bevel gears on the power input shaft.

3. The mobile light vehicle's four-legged synchronous base lifting structure according to claim 1, characterized in that: The screw jack includes a screw and a screw seat, and the screw seat is provided with a meshing worm gear; the screw passes through the screw seat from top to bottom, and the worm gear has a threaded hole in the middle for the screw to pass through and mesh with it.

4. The mobile light vehicle four-legged synchronous base lifting structure according to claim 3, characterized in that: Each screw jack is provided with a fixed bracket fixedly connected to the chassis of the lighting vehicle. The screw seat is fixedly connected to the lower side of the fixed bracket, and a screw sleeve located above the screw seat and fitted onto the screw is fixedly connected to the fixed bracket.

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