Mobile stage car with stage area convenient to adjust

Abstract

The utility model provides a mobile stage car with a stage area convenient to adjust, which relates to the technical field of mobile stage cars and comprises a car body, a box body is fixedly arranged on the upper end face of the car body, a box door is hinged to the right side face of the box body, a plurality of supporting columns are hinged to the right side face of the box door, and a supporting rod is arranged in each supporting column in a sliding mode in the vertical direction. When the mobile stage car with the stage area convenient to adjust is used, the box door is rotated towards the right side, so that the box door is in a horizontal state, then the supporting rod is adjusted to move up and down through the locking mechanism, the crawler block is in contact with the ground, and the buffer device has the set compression amount; then the relative positions of the supporting rods and the supporting columns are locked through the locking mechanisms, when the box door is used as a stage, vibration is transmitted to the caterpillar blocks through the supporting columns and the supporting rods, the vibration is buffered through the buffering devices, the using effect of the box door as the stage is better, and meanwhile damage to the box door by the vibration is reduced.

Description

Technical Field

[0001] The utility model relates to a stage vehicle, in particular to a mobile stage vehicle with an easily adjustable stage area, belonging to the technical field of mobile stage vehicles. Background Art

[0002] The mobile stage car is a special car that is convenient for mobile performances and can be unfolded into a stage. It is very practical and convenient for professional activities with high mobility such as performances, especially for small performances such as sending plays to the countryside, weddings and funerals, opening ceremonies, commercial performances, etc.

[0003] After searching, the patent number is: CN203460764U, which provides a mobile stage vehicle. Through the provided technical solution, it can be realized that since a hydraulic system is installed on each movable part, the various baffles of the car can be quickly unfolded, and at the same time, by using the movable supporting legs installed on the relevant baffles, a three-dimensional stage can be quickly formed without too much manual operation, which greatly saves time; and the left and right baffles adopt a double-layer folding structure, which does not take up space when folded and increases the stage area when unfolded; in addition, by making full use of the rear baffle, a T-shaped stage is formed, which not only increases the stage area, but also enhances the practicality of the stage, which can facilitate close interaction between performers and the audience.

[0004] The supporting legs of the above technical solution do not have a buffering function, and the contact between the stage and the ground through the supporting legs is a rigid contact. When the stage is in use, the vibration of the stage is directly transmitted to the supporting legs, and the supporting legs are transmitted to the ground that cannot shrink and deform, causing great damage to the stage. At the same time, the use experience of the stage is uncomfortable, affecting the performance of the actors. Summary of the invention

[0005] The purpose of the utility model is to provide a mobile stage vehicle with an easily adjustable stage area in order to solve the above-mentioned problem, so as to solve the problem of strong vibration of the stage in the prior art.

[0006] The utility model is realized through the following technical scheme: a mobile stage vehicle with an easily adjustable stage area comprises a vehicle body, a box body is fixedly arranged on the upper end surface of the vehicle body, a box door is hingedly arranged on the right side surface of the box body, a plurality of support columns are hingedly arranged on the right side surface of the box door, a support rod is slidingly arranged in the up and down directions inside each support column, a locking mechanism for locking the support rod and the support column at any relative position is also arranged between the support rod and the support column, a shoe is fixedly arranged on the bottom end of each support rod, a buffer device is arranged inside the shoe, a locking device is also arranged between the support rod and the box body, and the locking device is used to prevent the box door from rotating to the right when in a vertical state.

[0007] Through the above technical scheme, when in use, the locking device is released and the box door is rotated to the right, so that the box door is in a horizontal state. At this time, the support rod in the support column is adjusted to move up and down through the locking mechanism, so that the shoe is in contact with the ground and the buffer device has a set compression amount. Then the locking mechanism can fix the relative position of the support rod and the support column, so that the box door in a horizontal state can be used as a stage, and performance supplies such as costumes and props can be placed in the box. The adjustable up and down position of the support rod in the support column can adapt to the highly uneven ground on site. At the same time, the vertical and horizontal states of the box door are easy to switch and easy to adjust, so that the stage can be quickly built when in use. At the same time, when the box door is used as a stage, the vibration of the box door is transmitted to the buffer device through the support column, the support rod and the shoe, so that the buffer device can buffer the impact of the vibration, reducing the damage to the box door. The vibration impact of the box door is not strong when in use, and the use effect is good.

[0008] Preferably, the locking mechanism includes a sleeve coaxially rotatably arranged with the bottom end of the support column, and a drive nut fixedly arranged on the lower end surface of the sleeve. The outer surface of the support rod is provided with an external thread, the sleeve is sleeved with the support rod, and the drive nut is threadedly connected to the support rod.

[0009] Through the above technical solution, when in use, by rotating the drive nut, the drive nut drives the support rod to move up and down in the support column, and the up and down positions of the support rod can be conveniently adjusted so that the shoe block can contact the ground below; when the drive nut is rotated, it drives the sleeve to rotate in the support column; the support rod can only move up and down in the support column and cannot rotate.

[0010] Preferably, the buffer device includes a shoe column slidably arranged in the shoe block along the up and down directions, a hollow chamber is opened inside the shoe block, the bottom end of the shoe column extends downward to the outside of the shoe block, and a buffer spring is arranged in the chamber of the shoe block above the shoe column.

[0011] Through the above technical solution, when in use, when the support rod moves downward to drive the shoe block to move downward, the shoe column moves downward and contacts the ground, as the support rod continues to move downward, the shoe column moves upward in the chamber of the shoe block to compress the buffer spring, so that the buffer spring reaches the set preload force; when in use, the box door is used as a stage, the support column, support rod, shoe block and shoe column can well support the box door, and the shoe column and buffer spring can buffer the vibration of the box door, so that the box door can be better used as a stage.

[0012] Preferably, the locking mechanism comprises a hook hinged to the side of the box body, and a pressure control mechanism is provided between the hook and the box body.

[0013] Through the above technical solution, when not in use, the box door is rotated to a vertical state so that the box door and the box body are merged together, and then the hook is engaged with the corresponding support rod. The pressure control mechanism is used to prevent the hook from rotating, thereby preventing the box door from rotating to the right, so that the box door can be stably maintained in a vertical state; the support rod and the support column can only rotate left and right relative to the box body.

[0014] Preferably, a hinge shaft is fixedly provided at one end of the hook away from the support rod, and a fixed block is rotatably connected to the outer surface of the hinge shaft, and the fixed block is fixedly connected to the box body.

[0015] Through the above technical solution, when the hook rotates, the hook drives the hinge shaft to rotate in the fixed block, and the hook is rotatably connected to the box body through the hinge shaft and the fixed block.

[0016] Preferably, the hinge shaft protrudes upward from the upper end surface of the fixed block, the outer surface of the hinge shaft located above the fixed block is provided with a front-to-rear symmetrical plane, the outer surface of the hinge shaft located above the fixed block is sleeved with a slot block, the slot block is fixed to the box body, and a slot is provided on the outer side of the slot block, the pressure control mechanism includes a card block engaged with the slot of the slot block, the card block includes a side plate and two card strips fixedly arranged on the left side of the side plate, the two card strips are inserted into the slot of the slot block and fit with the plane of the hinge shaft; the pressure control mechanism also includes a pressure element arranged on the right side of the side plate.

[0017] By means of the above technical scheme, when the box door rotates to the right, the support column and the support rod move to the right, and the right movement of the support rod drives the hook to rotate, and the rotation of the hook drives the rotation of the hinge shaft, and the rotation of the hinge shaft drives the side plate to rotate in the direction away from the slot block through the cooperation of the plane and the card strip. The rotation of the side plate applies pressure to the pressure element, and the pressure element in turn prevents the rotation of the side plate, and then prevents the rotation of the hook, and then the hook prevents the support rod, the support column and the box door from rotating to the right, thereby achieving the goal of keeping the box door in a vertical state. When the vehicle body moves, the box door remains in a vertical state under the limit of the hook; when in use, when the box door needs to be in a horizontal state, the hook needs to be rotated at this time so that the hook overcomes the set pressure of the pressure element, so that the hook is disengaged from the support rod, and then the box door is rotated to the right to a horizontal state; the pressure element can also be removed, and the hook can be rotated freely so that the hook is disengaged from the support rod, and then the box door is rotated to the right to a horizontal state.

[0018] Preferably, the pressure element includes two adjusting bolts threadedly connected to the right side surface of the slot block, and two long grooves are opened along the front-to-back direction at positions corresponding to the adjusting bolts on the side plate. The adjusting bolts are located in the corresponding long grooves, and a pressure spring is provided on the outer surface of the adjusting bolt located on the right side of the side plate.

[0019] With the above technical solution, when the door is turned to the right during use, the door drives the hook to rotate through the support rod, and the rotation of the hook drives the side panel to rotate away from the slot block through the hinge shaft and the card strip. The rotation of the side panel compresses the two pressure springs, and the pre-tightening force of the pressure spring in turn prevents the rotation of the side panel, thereby preventing the rotation of the hinge shaft, thereby preventing the hook from stopping, and thereby preventing the support column, support rod and door from rotating to the right. Therefore, the pre-tightening force of the pressure spring is the force that prevents the door from rotating to the right, and the pressure spring is confined between the side panel and the nut of the adjusting bolt. By screwing The adjusting bolt can be moved into the slot block or extended from the slot block to adjust the preload force of the pressure spring to be larger or smaller; when the box door needs to be adjusted to rotate right to a horizontal state, the hook needs to be rotated to overcome the preload force of the pressure spring so that the hook is disengaged from the support rod and the box door can be rotated to the right to be horizontal; the adjusting bolt can also be rotated to disengage the adjusting bolt from the slot block, at which time the adjusting bolt and the pressure spring can be removed, and the hook can be rotated freely to disengage the hook from the support rod and rotate the box door to the right to a horizontal state.

[0020] Preferably, a pressure plate is provided between the side plate and the nut of the adjusting bolt, the pressure plate is sleeved with each adjusting bolt, and a pressure spring is located between the side plate and the pressure plate.

[0021] Through the above technical solution, when adjusting the preload force of the pressure spring, the adjusting bolt is screwed so that the adjusting bolt applies pressure to the pressure spring through the pressure plate or stretches the pressure spring to adjust the preload force of the pressure spring.

[0022] The utility model provides a mobile stage vehicle with an easily adjustable stage area, which has the following beneficial effects:

[0023] 1. The mobile stage vehicle with an easily adjustable stage area is provided with a box door, a support column, a support rod, a locking mechanism, a shoe, and a buffer device. When in use, the box door is turned to the right to make the box door in a horizontal state, and the support column and the support rod are turned in a vertical state, and then the support rod is adjusted to move up and down by the locking mechanism, and the shoe is in contact with the ground, and the buffer device has a set compression amount, and then the relative position of the support rod and the support column is locked by the locking mechanism. When the box door is used as a stage, the vibration is transmitted to the shoe through the support column and the support rod, and the vibration is buffered by the buffer device, so that the box door can be used as a stage better, and at the same time, the damage to the box door caused by vibration is reduced.

[0024] 2. The mobile stage vehicle with an easily adjustable stage area is provided with a door, a support rod, a hook, a hinge shaft, a clamping strip, a side panel and a pressure spring. When not in use, the door is rotated to the left so that the hook engages with the support rod to fix the door in a vertical state. When the door is rotated to the right, the hook is driven to rotate. The rotation of the hook drives the side panel to rotate through the hinge shaft and the clamping strip. The rotation of the side panel compresses the pressure spring. The preload force of the pressure spring in turn prevents the rotation of the side panel, thereby preventing the rotation of the hinge shaft and the hook. The hook prevents the door from rotating, so that the door can remain in a vertical state. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0026] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the box body of the utility model.

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the hook of the utility model.

[0029] Figure 5 It is a three-dimensional structural schematic diagram of the slot block, side plate and adjusting bolt of the utility model in a separated state.

[0030] Figure 6 It is a three-dimensional structural schematic diagram of the utility model in the separated state of the slot block and the hinge shaft.

[0031] Figure 7 It is a schematic diagram of the internal three-dimensional structure of the support column and the track block of the utility model.

[0032] Description of Reference Numerals

[0033] 1. Car body; 2. Box body; 3. Box door; 4. Support column; 5. Support rod; 6. Shoe; 7. Bushing; 8. Drive nut; 9. Shoe column; 10. Buffer spring; 11. Hook; 12. Articulated shaft; 13. Fixed block; 14. Plane; 15. Slot block; 16. Slot; 17. Side plate; 18. Clip strip; 19. Adjusting bolt; 20. Long slot; 21. Pressure spring; 22. Pressure plate. DETAILED DESCRIPTION

[0034] See also Figure 1-7The embodiment of the utility model provides a mobile stage vehicle with an easily adjustable stage area, comprising a vehicle body 1, a box body 2 is fixedly arranged on the upper end surface of the vehicle body 1, a box door 3 is hinged on the right side surface of the box body 2, a plurality of support columns 4 are hinged on the right side surface of the box door 3, a support rod 5 is slidingly arranged inside each support column 4 along the up and down directions, a locking mechanism for locking the support rod 5 and the support column 4 at any relative position is also arranged between the support rod 5 and the support column 4, a shoe block 6 is fixedly arranged on the bottom end of each support rod 5, a buffer device is arranged inside the shoe block 6, a locking device is also arranged between the support rod 5 and the box body 2, and the locking device is used to prevent the box door 3 from rotating to the right when in a vertical state.

[0035] When in use, the locking device is released and the box door 3 is rotated to the right, so that the box door 3 is in a horizontal state. At this time, the support rod 5 in the support column 4 is adjusted to move up and down through the locking mechanism, so that the shoe block 6 contacts the ground and the buffer device has a set compression amount. Then the locking mechanism can fix the relative positions of the support rod 5 and the support column 4, so that the box door 3 in a horizontal state can be used as a stage, and performance supplies such as costumes and props can be placed in the box body 2. The adjustable upper and lower positions of the support rod 5 in the support column 4 can adapt to the highly uneven ground on site. At the same time, the switching between the vertical state and the horizontal state of the box door 3 is easy to achieve and easy to adjust, so that the stage can be quickly built when in use; at the same time, when the box door 3 is used as a stage, the vibration received by the box door 3 is transmitted to the buffer device through the support column 4, the support rod 5 and the shoe block 6, so that the buffer device can buffer the impact of the vibration, reducing the damage to the box door 3. The vibration impact of the box door 3 is not strong when in use, and the use effect is good.

[0036] See also Figure 7 In this embodiment, the locking mechanism includes a sleeve 7 that is coaxially rotatable with the bottom end of the support column 4, and a driving nut 8 that is fixedly arranged on the lower end surface of the sleeve 7. The outer surface of the support rod 5 is provided with an external thread, the sleeve 7 and the support rod 5 are sleeved together, and the driving nut 8 is threadedly connected to the support rod 5; when in use, by rotating the driving nut 8, the driving nut 8 drives the support rod 5 to move up and down in the support column 4, and the up and down positions of the support rod 5 can be conveniently adjusted so that the shoe block 6 can contact the ground below; when the driving nut 8 rotates, it drives the sleeve 7 to rotate in the support column 4; the support rod 5 can only move up and down in the support column 4 and cannot rotate.

[0037] See also Figure 7In this embodiment, the buffer device includes a shoe column 9 slidably arranged in the shoe block 6 along the up and down direction, and a hollow chamber is opened inside the shoe block 6. The bottom end of the shoe column 9 extends downward to the outside of the shoe block 6, and a buffer spring 10 is arranged in the chamber of the shoe block 6 above the shoe column 9; when in use, when the support rod 5 moves downward to drive the shoe block 6 to move downward, the shoe column 9 moves downward and contacts the ground. As the support rod 5 continues to move downward, the shoe column 9 moves upward in the chamber of the shoe block 6 to compress the buffer spring 10, so that the buffer spring 10 reaches the set preload force; when in use, the box door 3 is used as a stage, and the support column 4, support rod 5, shoe block 6 and shoe column 9 can well support the box door 3, and the shoe column 9 and buffer spring 10 can buffer the vibration of the box door 3, so that the box door 3 can be better used as a stage.

[0038] See also Figure 1 , 2 , 3, 4, 5, 6, in order to achieve the purpose of fixing the position of the box door 3 when it is in a vertical state, in this embodiment, the locking mechanism includes a hook 11 hinged to the side of the box body 2, and a pressure control mechanism is arranged between the hook 11 and the box body 2; when not in use, the box door 3 is rotated to a vertical state so that the box door 3 and the box body 2 are merged together, and then the hook 11 is engaged with the corresponding support rod 5, and the pressure control mechanism is used to prevent the hook 11 from rotating, thereby preventing the box door 3 from rotating to the right, so that the box door 3 can be stably maintained in a vertical state; the support rod 5 and the support column 4 can only rotate left and right relative to the box body 2.

[0039] See also Figure 4 , 5 6. In order to achieve the purpose of hinged connection between the hook 11 and the box body 2, in the present embodiment, a hinge shaft 12 is fixedly provided at one end of the hook 11 away from the support rod 5, and a fixed block 13 is rotatably connected to the outer surface of the hinge shaft 12, and the fixed block 13 is fixedly connected to the box body 2; when the hook 11 rotates, the hook 11 drives the hinge shaft 12 to rotate in the fixed block 13, and the hook 11 is rotatably connected to the box body 2 through the hinge shaft 12 and the fixed block 13.

[0040] See also Figure 4 , 56. In this embodiment, the hinge shaft 12 protrudes upward from the upper end surface of the fixed block 13. The outer surface of the hinge shaft 12 located above the fixed block 13 is provided with a front-to-rear symmetrical plane 14. The outer surface of the hinge shaft 12 located above the fixed block 13 is sleeved with a groove block 15. The groove block 15 is fixedly arranged with the box body 2. The outer side surface of the groove block 15 is provided with a slot 16. The pressure control mechanism includes a block engaged with the slot 16 of the slot block 15. The block includes a side plate 17 and two clips 18 fixedly arranged on the left side of the side plate 17. The two clips 18 are inserted into the slot 16 of the slot block 15 and fit with the plane 14 of the hinge shaft 12; the pressure control mechanism also includes a pressure element arranged on the right side of the side plate 17; when the box door 3 rotates to the right, the support column 4 and the support rod 5 are driven to move to the right, the support rod 5 moves to the right to drive the hook 11 to rotate, and the rotation of the hook 11 drives the hinge shaft 12 to rotate, and the hinge The rotation of the connecting shaft 12 drives the side plate 17 to rotate in the direction away from the groove block 15 through the cooperation of the plane 14 and the clamping strip 18. The rotation of the side plate 17 applies pressure to the pressure element, and the pressure element in turn prevents the rotation of the side plate 17, thereby preventing the rotation of the hook 11, and then the hook 11 prevents the support rod 5, the support column 4 and the box door 3 from rotating to the right, thereby achieving the goal of keeping the box door 3 in a vertical state. When the vehicle body 1 moves, the box door 3 remains in a vertical state under the limit of the hook 11; when in use, when the box door 3 is required to be in a horizontal state, the hook 11 needs to be rotated at this time so that the hook 11 overcomes the set pressure of the pressure element, so that the hook 11 is disengaged from the support rod 5, and then the box door 3 is rotated to the right to be horizontal; the pressure element can also be removed, and the hook 11 can be freely rotated to disengage the hook 11 from the support rod 5, and then the box door 3 is rotated to the right to be horizontal.

[0041] See also Figure 1 , 2, 3, 4, 5, in this embodiment, the pressure element includes two adjusting bolts 19 threadedly connected to the right side of the slot block 15, and two long slots 20 are provided on the side plate 17 at positions corresponding to the adjusting bolts 19 along the front-to-back direction, and the adjusting bolts 19 are located in the corresponding long slots 20. The outer surface of the adjusting bolt 19 located on the right side of the side plate 17 is sleeved with a pressure spring 21; when the box door 3 is rotated to the right during use, the box door 3 drives the hook 11 to rotate through the support rod 5, and the rotation of the hook 11 drives the side plate 17 to rotate away from the slot block 15 through the hinge shaft 12 and the card strip 18. The rotation of the side plate 17 compresses the two pressure springs 21, and the pre-tightening force of the pressure spring 21 in turn prevents the rotation of the side plate 17, thereby preventing the rotation of the hinge shaft 12, thereby preventing the hook 11 from stopping, thereby preventing the support column 4, the support rod 5 and the box door 3 from rotating to the right. Therefore, the preload force of the pressure spring 21 is the force that prevents the box door 3 from rotating to the right. The pressure spring 21 is restricted between the side plate 17 and the nut of the adjusting bolt 19. The preload force of the pressure spring 21 can be adjusted to be larger or smaller by screwing the adjusting bolt 19 so that the adjusting bolt 19 moves into the slot block 15 or extends out of the slot block 15. When it is necessary to adjust the box door 3 to rotate to the right to a horizontal state, it is necessary to rotate the hook 11 to overcome the preload force of the pressure spring 21 so that the hook 11 is disengaged from the support rod 5, and the box door 3 can be rotated to the right to rotate to a horizontal state. The adjusting bolt 19 can also be screwed so that the adjusting bolt 19 is disengaged from the slot block 15. At this time, the adjusting bolt 19 and the pressure spring 21 can be removed, and the hook 11 can be rotated freely so that the hook 11 is disengaged from the support rod 5, and the box door 3 is rotated to the right to a horizontal state.

[0042] See also Figure 4 , 5 In order to facilitate the purpose of adjusting the preload force of the pressure spring 21, in this embodiment, a pressure plate 22 is provided between the side plate 17 and the nut of the adjusting bolt 19, and the pressure plate 22 is sleeved with each adjusting bolt 19, and the pressure spring 21 is located between the side plate 17 and the pressure plate 22; when adjusting the preload force of the pressure spring 21, the adjusting bolt 19 is screwed so that the adjusting bolt 19 applies pressure to the pressure spring 21 through the pressure plate 22 or stretches the pressure spring 21 to adjust the preload force of the pressure spring 21.

[0043] When the utility model is in use: when it is necessary to build a stage, the adjusting bolt 19 is disengaged from the slot block 15 by screwing the adjusting bolt 19, the adjusting bolt 19 and the pressure spring 21 are removed, and then the hook 11 is rotated to disengage the hook 11 from the support rod 5, and then the box door 3 is rotated to the right to a horizontal state, and then the extension length of the support rod 5 relative to the support column 4 is adjusted by rotating the driving nut 8, so that the shoe column 9 is downwardly in contact with the ground to achieve a supporting effect on the box door 3, and the compression state of the shoe column 9 on the buffer spring 10 can be adjusted by adjusting the downward movement distance of the support rod 5, so that the buffer spring 10 is at a set preload; when not in use, the box door 3 is rotated to the left, and then the hook 11 is engaged with the support rod 5, and then the adjusting bolt 19 and the pressure spring 21 are screwed onto the slot block 15, and the preload force of the pressure spring 21 is adjusted.

[0044] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mobile stage vehicle with an easily adjustable stage area, comprising a vehicle body (1), characterized in that: A box body (2) is fixedly arranged on the upper end surface of the vehicle body (1), a box door (3) is hingedly connected to the right side surface of the box body (2), and a plurality of support columns (4) are hingedly connected to the right side surface of the box door (3), each of the support columns (4) is provided with a support rod (5) inside thereof so as to slide in the up-down direction, and a locking mechanism for locking the support rod (5) and the support column (4) at any relative position is also provided between the support rod (5) and the support column (4), a shoe (6) is fixedly arranged at the bottom end of each of the support rods (5), and a buffer device is provided inside the shoe (6), and a locking device is also provided between the support rod (5) and the box body (2), and the locking device is used to prevent the box door (3) from rotating to the right when in a vertical state.

2. The mobile stage vehicle with easily adjustable stage area according to claim 1, characterized in that: The locking mechanism comprises a shaft sleeve (7) coaxially rotatably arranged with the bottom end of the support column (4), and a driving nut (8) fixedly arranged on the lower end surface of the shaft sleeve (7); an external thread is formed on the outer surface of the support rod (5); the shaft sleeve (7) and the support rod (5) are sleeved together; and the driving nut (8) is threadedly connected to the support rod (5).

3. The mobile stage vehicle with easily adjustable stage area according to claim 2, characterized in that: The buffer device comprises a shoe column (9) slidably arranged in the shoe block (6) in the up-down direction, a hollow chamber is opened inside the shoe block (6), the bottom end of the shoe column (9) extends downward to the outside of the shoe block (6), and a buffer spring (10) is arranged in the chamber of the shoe block (6) above the shoe column (9).

4. The mobile stage vehicle with easily adjustable stage area according to any one of claims 1 to 3, characterized in that: The locking device comprises a hook (11) hinged to a side surface of the box body (2), and a pressure control mechanism is provided between the hook (11) and the box body (2).

5. The mobile stage vehicle with easily adjustable stage area according to claim 4, characterized in that: A hinge shaft (12) is fixedly provided at one end of the hook (11) away from the support rod (5); a fixing block (13) is rotatably connected to the outer surface of the hinge shaft (12); and the fixing block (13) is fixedly connected to the box body (2).

6. The mobile stage vehicle with easily adjustable stage area according to claim 5, characterized in that: The hinge shaft (12) protrudes upward from the upper end surface of the fixed block (13); the outer surface of the hinge shaft (12) located above the fixed block (13) is provided with a front-to-rear symmetrical plane (14); the outer surface of the hinge shaft (12) located above the fixed block (13) is sleeved with a slot block (15); the slot block (15) is fixedly arranged with the box body (2); the outer side surface of the slot block (15) is provided with a slot (16); the pressure control mechanism comprises a clamping block clamped with the slot (16) of the slot block (15); the clamping block comprises a side plate (17) and two clamping strips (18) fixedly arranged with the left side surface of the side plate (17); the two clamping strips (18) are clamped into the slot (16) of the slot block (15) and fit with the plane (14) of the hinge shaft (12); the pressure control mechanism also comprises a pressure element arranged on the right side surface of the side plate (17).

7. The mobile stage vehicle with easily adjustable stage area according to claim 6, characterized in that: The pressure element comprises two adjusting bolts (19) threadedly connected to the right side surface of the slot block (15); two long slots (20) are provided on the side plate (17) at positions corresponding to the adjusting bolts (19) along the front-to-back direction; the adjusting bolts (19) are located in the corresponding long slots (20); and the pressure element is a pressure spring (21) sleeved on the outer surface of the adjusting bolt (19) located on the right side of the side plate (17).

8. The mobile stage vehicle with easily adjustable stage area according to claim 7, characterized in that: A pressure plate (22) is provided between the side plate (17) and the nut of the adjusting bolt (19), the pressure plate (22) being sleeved with each adjusting bolt (19), and the pressure spring (21) being located between the side plate (17) and the pressure plate (22).

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