Stage mobile vehicle capable of adjusting stage size

Abstract

The utility model belongs to special vehicle and stage equipment technical field discloses a stage movable vehicle of adjustable stage size, including chassis frame, the both sides symmetry fixed connection of chassis frame has a first sliding rail, the first sliding rail is connected with the first telescopic frame of sliding, the first telescopic frame is fixedly connected with the second sliding rail, the second sliding rail is connected with the second telescopic frame of sliding, the outside of second telescopic frame is rotatably connected with folding wing board through stage hinge, the first telescopic frame is rotatably connected through linkage support between the folding wing board, the first telescopic frame is driven by the drive arrangement arranged on chassis frame. The utility model entire process is driven uniformly by drive arrangement, simple structure, action reliable, deployment speed is extremely fast, has improved work efficiency greatly and reduced the security risk.

Description

Technical Field

[0001] This utility model belongs to the technical field of special vehicles and stage equipment, specifically relating to a mobile stage vehicle that can be quickly deployed and has a variable stage area, and in particular a stage vehicle that uses an automated mechanical linkage structure to realize the unfolding and retraction of the stage. Background Technology

[0002] Currently, mobile stage trucks are widely used in various commercial roadshows, cultural tours, festivals, and outdoor gatherings due to their convenience and mobility. However, existing mobile stage trucks generally suffer from the following technical defects:

[0003] 1) Traditional stage truck stage expansion relies heavily on manual operation, requiring workers to manually lift and flatten the folded side stage panels and fix them with pins or bolts. The whole process usually requires 2-4 workers to work together and takes 20 to 40 minutes. It is not only inefficient, but also more inconvenient to operate in bad weather or at night, resulting in high labor costs.

[0004] 2) Most existing designs only provide simple power to push out the stage side boxes, but the unfolding and locking of the stage panels still need to be done manually. They lack linkage design in mechanical structure, have a very low degree of automation, and cannot achieve one-click unfolding.

[0005] 3) Manually installed connectors may not be properly locked due to negligence, and may loosen or fail under crowd load or wind load, posing a safety hazard to people on stage and audience members below.

[0006] 4) Due to the complicated setup process, these types of stage trucks are difficult to meet the needs of events requiring rapid relocation, which limits their application scenarios and operational efficiency.

[0007] Therefore, developing an adjustable stage vehicle that can be deployed fully automatically, quickly, and safely is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0008] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a stage mobile vehicle with an adjustable stage size, which aims to solve the problems of slow deployment speed, low degree of automation, strong dependence on manpower and safety hazards of traditional mobile stage vehicles.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An adjustable stage vehicle includes a chassis frame with a main stage panel fixed to the top. At least two levels of telescopic mechanisms and a linkage mechanism are symmetrically arranged on both sides of the chassis frame. The telescopic mechanism comprises: a primary telescopic frame slidably connected to the chassis frame via a primary slide rail; and a secondary telescopic frame slidably connected to the primary telescopic frame via a secondary slide rail. This multi-stage telescopic design allows for maximum extension travel within a limited retractable width.

[0011] The linkage mechanism includes: a folding wing plate, which is rotatably connected to the outside of the secondary telescopic frame via a stage hinge; and a key linkage strut, whose two ends are rotatably connected between the primary telescopic frame and the folding wing plate via a first pivot and a second pivot, respectively; the power of the entire system is provided by a drive unit, which drives the primary telescopic frame to move relative to the chassis frame.

[0012] Preferably, the driving device is a hydraulic cylinder or an electric push rod, one end of which is fixed to the chassis frame and the other end is fixed to the primary telescopic frame.

[0013] Preferably, both the primary and secondary slide rails are heavy-duty ball bearing slide rails, and a wear-resistant polymer slider is provided between the corresponding sliding contact surfaces of the primary and secondary telescopic frames.

[0014] Preferably, a reinforcing connecting seat is fixedly provided on the folding wing plate near the connection of the linkage strut, and the second rotating shaft is mounted on the reinforcing connecting seat.

[0015] Preferably, the end of the secondary telescopic frame is provided with a locking pin assembly, and the side edge of the main stage board is provided with a positioning hole that cooperates with the locking pin assembly, for locking the telescopic mechanism when the stage is fully retracted.

[0016] Preferably, after the folding wing panel and the main stage panel are unfolded and connected, their joints are locked by a manual or automatic locking mechanism.

[0017] Preferably, each of the four bottom corners of the chassis frame is equipped with independently adjustable hydraulic support legs for leveling and stabilizing the vehicle during deployment.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model, through an innovative linkage support design, cleverly combines the linear motion of the telescopic frame with the flipping motion of the folding wing plates, realizing the full automation of the stage's unfolding and retraction, and completely eliminating manual operation.

[0020] 2. The entire unfolding or retracting process of this utility model is driven by a single power source and can be completed within 2 minutes. Compared with the traditional manual method, the efficiency is improved by more than 90%, making it particularly suitable for application scenarios that require rapid site transition.

[0021] 3. This utility model adopts pure mechanical linkage. Compared with the complex scheme of using multiple motors or hydraulic cylinders to control different actions separately, the structure of this utility model is simpler, the motion relationship is clear, the reliability is high, and the failure rate is low.

[0022] 4. The automated operation of this utility model avoids safety hazards caused by human installation errors, and the integrated locking mechanism ensures the stability and reliability of the stage in the unfolded state. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model in its folded and transported state;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention in its unfolded working state;

[0026] Figure 3 This is a partially enlarged schematic diagram of the telescopic and unfolding mechanism in this utility model. The diagram clearly shows the connection relationship and working principle between the linkage support rod, the telescopic frame and the folding wing plate.

[0027] In the diagram: 1-Chassis frame, 2-Primary slide rail, 3-Primary telescopic frame, 4-Secondary slide rail, 5-Secondary telescopic frame, 6-Drive unit, 7-Stage hinge, 8-Folding wing plate, 9-Linkage strut, 10-First pivot, 11-Second pivot, 12-Reinforced connecting seat, 13-Main stage plate, 14-Locking pin assembly, 15-Positioning hole, 16-Hydraulic support leg. Detailed Implementation

[0028] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] Please see Figure 1 , Figure 2 and Figure 3This utility model provides a technical solution: a stage vehicle with adjustable stage size, which includes a chassis frame 1 as the base. The chassis frame is welded from high-strength Q345B rectangular steel pipes to ensure the overall load-bearing capacity and rigidity. The top of the chassis frame 1 is covered with anti-slip patterned steel plate or stage-specific wooden board to form the main stage board 13. At the four corners of the bottom of the chassis frame 1, four independently retractable hydraulic support legs 16 are installed for precise leveling and stable support of the vehicle during deployment.

[0030] On both sides of the chassis frame 1, two heavy-duty ball bearing type primary slide rails 2 are symmetrically fixed along the width direction of the vehicle. A primary telescopic frame 3 is slidably installed on the primary slide rail 2. A secondary slide rail 4 is also fixed inside the primary telescopic frame 3. A secondary telescopic frame 5 is slidably installed on the secondary slide rail 4. This two-stage telescopic nested structure allows the unfolded width of the stage on one side to reach more than 1.5 times the width of the vehicle body.

[0031] On the outermost side of the secondary telescopic frame 5, one or more folding wing panels 8 are rotatably connected via multiple heavy-duty stage hinges 7, such as... Figure 1 As shown, in the folded state, the folding wing panel 8 is in a vertical position, serving as the side panel of the carriage.

[0032] The core component for achieving automation is the linkage strut 9, which is a metal rod with sufficient rigidity. One end of the strut 9 is hinged to a specific position on the first-stage telescopic frame 3 via the first pivot 10, and the other end is hinged to the reinforcing connecting seat 12 on the inner side of the folding wing plate 8 via the second pivot 11. The reinforcing connecting seat 12 is a thick steel plate welded to the frame of the folding wing plate 8 to ensure the connection strength.

[0033] The drive unit 6 uses a high-thrust, long-stroke hydraulic cylinder, with its cylinder body fixed to the crossbeam of the chassis frame 1, and the piston rod end fixedly connected to the inner end plate of the first-stage telescopic frame 3. The drive units 6 on both sides are controlled by the same hydraulic pump station, and the synchronous extension or retraction of both sides is ensured by a synchronization valve.

[0034] The specific working principle and usage process of this utility model are as follows:

[0035] Step S1, Deployment Preparation: The vehicle is parked in the designated position, and the operator starts the hydraulic system. The four hydraulic support legs 16 extend and automatically level, slightly lifting the wheels off the ground to provide a stable foundation for the stage.

[0036] Step S2, Deployment Process: The operator starts the deployment program through the control panel. The drive device 6, i.e., the hydraulic cylinder, extends, pushing the primary telescopic frame 3 to slide outward along the primary slide rail 2. At the same time, the secondary telescopic frame 5 also deploys outward.

[0037] Step S3, Linked Deployment: During the outward movement of the primary telescopic frame 3, the distance between the linkage support rod 9 and the first and second rotating shafts 11 changes due to the fixed length of the linkage support rod 9. This generates a continuous thrust on the folding wing plate 8, causing it to rotate upward and outward around the stage hinge 7. When the telescopic frame is fully deployed, the linkage support rod 9 lifts the folding wing plate 8 to a horizontal position, ensuring a tight connection with the main stage panel 13.

[0038] Step S4, Locking: After unfolding into place, the operator can manually or automatically lock the folding wing panel 8 to the main stage panel 13 to form a complete and sturdy large-area stage.

[0039] Step S5, Folding process: Start the folding program, drive device 6 moves in the opposite direction, pulls the first-level telescopic frame 3 inward and retracts it. Under the pulling action of the linkage support rod 9, the folding wing plate 8 will automatically and smoothly flip downward and fold to the vertical position. When fully retracted, the locking pin assembly 14 set on the second-level telescopic frame 5 will automatically engage with the positioning hole 15 on the side edge of the main stage plate 13, and firmly lock the entire telescopic mechanism in the transport state to prevent shaking during travel.

[0040] In summary, this utility model, through the ingenious combination of the linkage strut and the multi-stage telescopic mechanism, successfully solves many problems existing in the prior art and provides an efficient, safe, and automated adjustable stage vehicle solution.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A stage vehicle with adjustable stage size, characterized in that, include: Chassis frame (1), the top of which is fixed with a main stage board (13). At least two-stage telescopic mechanisms are provided on both sides of the chassis frame (1), the telescopic mechanisms comprising: The first-stage telescopic frame (3) is slidably connected to the chassis frame (1) via the first-stage slide rail (2); The secondary telescopic frame (5) is slidably connected to the primary telescopic frame (3) via the secondary slide rail (4); Folding wing panel (8), which is rotatably connected to the outside of the secondary telescopic frame (5) via stage hinge (7); The linkage strut (9) is rotatably connected at both ends to the first telescopic frame (3) and the folding wing plate (8) via the first rotating shaft (10) and the second rotating shaft (11), respectively. The drive device (6) is used to drive the telescopic mechanism to extend or retract.

2. The stage mobile vehicle with adjustable stage size according to claim 1, characterized in that: The drive device (6) is a hydraulic cylinder or an electric push rod, one end of which is fixed on the chassis frame (1) and the other end is fixed on the first-level telescopic frame (3).

3. The stage mobile vehicle with adjustable stage size according to claim 1, characterized in that: Both the primary slide rail (2) and the secondary slide rail (4) are heavy-duty ball slide rails, and a wear-resistant polymer slider is provided between the corresponding sliding contact surfaces of the primary telescopic frame (3) and the secondary telescopic frame (5).

4. The stage mobile vehicle with adjustable stage size according to claim 1, characterized in that: A reinforcing connecting seat (12) is fixedly provided on the folding wing plate (8) near the connection point of the linkage support rod (9), and the second rotating shaft (11) is installed on the reinforcing connecting seat (12).

5. A stage vehicle with adjustable stage size according to claim 1, characterized in that: The end of the secondary telescopic frame (5) is provided with a locking pin assembly (14), and the side edge of the main stage board (13) is provided with a positioning hole (15) that cooperates with the locking pin assembly (14) to lock the telescopic mechanism when the stage is fully retracted.

6. The stage mobile vehicle with adjustable stage size according to claim 1, characterized in that: After the folding wing panel (8) and the main stage panel (13) are unfolded and connected, their seams are locked by a manual or automatic locking mechanism.

7. The stage mobile vehicle with adjustable stage size according to claim 1, characterized in that: The chassis frame (1) is equipped with hydraulic support legs (16) at the bottom four corners, which can be independently adjusted in height, for leveling and stabilizing the vehicle during deployment.

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