A stage vehicle platform with a positioning and locking device

Abstract

The present invention relates to a stage vehicle platform with a positioning and locking device. An AGV cart located on the platform board is fixed to the bottom of the moving board; two groups of first fixing rods are fixedly arranged at the bottom of the moving board, and the outer walls of each group of first fixing rods are slidably sleeved with the same connecting seat for increasing the contact area between the moving board and the platform board; a lifting rod is liftably arranged in the connecting seat, and a plurality of grooves are formed in the top of the platform board, and a first sliding rod used in cooperation with the lifting rod is slidably arranged in the grooves to fix the connecting seat on the platform board; a driving mechanism is arranged on the AGV cart and is used for driving the connecting seat to abut against the upper surface of the platform board and driving the first sliding rod to move upward and insert into the corresponding connecting seat; a cleaning assembly is arranged at the bottom end of the lifting rod and is used in cooperation with the lifting rod to clean impurities on the first sliding rod during the descending process; the problems that the locking and unlocking processes are not fast and the electronic control system is complex during the use of the stage moving board on the existing stage vehicle platform, resulting in inconvenient use are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of stage equipment and relates to a stage car platform with a positioning and locking device. Background Art

[0002] In order to improve the stage expressiveness, multiple movable plates that can move on the stage are often arranged on the stage. These movable plates provide more space and flexibility for the actors' performances. The actors can perform various actions on the movable plates, and the movable plates need to move or stop precisely according to the rhythm and plot of the performance to ensure the safety of the actors and the coherence of the performance.

[0003] To ensure the stability of the movable plate after movement, various fixing means are usually adopted. For example, some movable plates are fixed by a limiting device and a hoop. The limiting device can prevent the movable plate from shifting during movement, and the hoop is used to tightly fix the movable plate to the stage structure. In addition, some stage equipment is also equipped with hydraulic support columns and adjustable support devices, which can adjust the height and angle according to the actual needs of the stage to further enhance the stability of the movable plate.

[0004] In addition, in some complex stage designs, the fixing of the movable plate may also be combined with an automated control system. For example, through the cooperation of a servo motor and a threaded rod, precise control and fixing of the movable plate can be achieved. When the movable plate reaches the designated position, the servo motor can tighten the fixing device through the threaded rod, thereby firmly fixing the movable plate on the stage.

[0005] These fixing means not only ensure the stability of the movable plate during the performance but also improve the safety and reliability of the stage, providing a safer performance environment for the actors. However, in the above technical means, the cooperation of the limiting device and the hoop has the problem that the locking and unlocking process of the movable plate is not fast, while the use of an automated control system has the problem of a complex electric control system. Therefore, a control device for a stage car platform that is more convenient and fast for locking and unlocking needs to be designed. Summary of the Invention

[0006] In view of this, in order to solve the problems of inconvenient use caused by the slow locking and unlocking process and the complex electric control system during the use of the stage movable plate on the existing stage car platform, the present invention provides a stage car platform with a positioning and locking device.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A stage car platform with a positioning and locking device, comprising a platform plate and a movable plate movably arranged on the platform plate. An AGV cart is fixed to the bottom of the movable plate and located on the platform plate.

[0009] Two groups of first fixing rods are fixedly arranged at the bottom of the moving plate, and the outer walls of each group of first fixing rods are slidably sleeved with the same connecting seat for increasing the contact area between the moving plate and the table plate;

[0010] A lifting rod is liftably arranged in the connecting seat, and a plurality of grooves are formed in the top of the table plate. A first sliding rod is slidably arranged in the grooves, and the first sliding rod is used in cooperation with the lifting rod to fix the connecting seat on the table plate;

[0011] A driving mechanism is arranged on the AGV cart and is used to drive the connecting seat to abut against the upper surface of the table plate and drive the first sliding rod to move upward and insert into the corresponding connecting seat;

[0012] A cleaning assembly is arranged at the bottom end of the lifting rod and is used in cooperation with the lifting rod to clean the impurities on the first sliding rod during the descending process.

[0013] Furthermore, the driving mechanism includes two sliding blocks slidably arranged on the top of the AGV cart. Two fixing seats are fixedly arranged on the top of the AGV cart. One side of the two fixing seats penetrates and is fixedly provided with the same electric push rod. The output end of the electric push rod is connected to the two sliding blocks through a connecting piece and is used to drive the sliding blocks to slide on the AGV cart. A first bevel edge is arranged at the outer end of the sliding block, and a rectangular hole adapted to the sliding block is arranged on one side of the connecting seat.

[0014] Furthermore, the connecting piece includes a connecting block slidably arranged on the top of the AGV cart. The output end of the electric push rod is fixedly connected to the connecting block. Two connecting rods are rotatably arranged on the connecting block, and the other ends of the connecting rods are rotatably connected to the corresponding sliding blocks.

[0015] Furthermore, a first mounting hole coaxial with the lifting rod is arranged at the bottom of the connecting seat. A second spring is sleeved on the outer wall of the lifting rod and is located in the first mounting hole. A conical platform is fixedly arranged at the top of the lifting rod. A step groove is arranged at the top of the outer end of the sliding block, and a second bevel edge is arranged on one side of the step groove. A waist-shaped hole corresponding to the lifting rod is arranged on one side of the sliding block.

[0016] Furthermore, the cleaning assembly includes a ball nut fixedly arranged at the bottom end of the lifting rod. A lead screw is slidably arranged in the ball nut. An electromagnet for adsorbing the first sliding rod is fixedly arranged at the bottom of the lead screw. A conical opening is arranged at the top of the first sliding rod, and a discharge hole communicating with the conical opening is arranged at the top of the first sliding rod for discharging slag. A conical block adapted to the conical opening is fixedly arranged at the bottom of the electromagnet. A scraper for cleaning the inside of the conical opening is arranged on the outside of the conical block. A locking piece for limiting the first sliding rod is arranged in the connecting seat.

[0017] Further, a third installation groove coaxial with the first fixing rod is formed in the bottom of the connecting seat. A second limiting ring is slidably arranged in the third installation groove. The second limiting ring is fixedly arranged at the bottom end of the first fixing rod. A fourth spring is sleeved on the outer wall of the first fixing rod and located in the third installation groove. The two ends of the fourth spring are respectively fixedly connected with the top wall of the third installation groove and the top of the second limiting ring, and are used to drive the connecting seat to move upward for resetting.

[0018] Further, a first limiting ring is fixedly sleeved on the outer wall of the bottom end of the first sliding rod. A first spring is sleeved on the outer wall of the first sliding rod. The two ends of the first spring are respectively fixedly connected with the bottom of the platen and the top of the first limiting ring, and are used to drive the first sliding rod to move downward for resetting.

[0019] Further, guide rods are fixedly arranged on both sides of the inner fixed seat. Guide seats are slidably sleeved on the outer walls of the guide rods. The guide seats are fixedly connected with the corresponding sliding blocks and are used to guide the sliding blocks.

[0020] Further, the locking member includes a first installation groove and a second installation groove formed in the connecting seat. The first installation groove and the second installation groove are communicated. A plug board is slidably arranged in the first installation groove. A sliding bar located in the second installation groove is fixedly arranged at the top of the plug board. A pushing bar corresponding to the sliding bar is fixedly arranged on one side of the guide seat and is used to drive the sliding bar to move. A clamping groove adapted to the outer wall of the first sliding rod is formed on one side of the plug board.

[0021] Further, a second fixing rod is fixedly arranged in the second installation groove. The sliding bar is slidably sleeved on the second fixing rod. A third spring is sleeved on the outer wall of the second fixing rod. The two ends of the third spring are respectively fixedly connected with one inner wall of the second installation groove and one side of the sliding bar.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. For a stage vehicle platform with a positioning and locking device disclosed by the present invention, through the precise cooperation of the electric push rod, the link mechanism and the connecting seat, the accurate positioning and support of the AGV cart at the set position are realized, ensuring the safety and stability of the stage performance; through the cooperation of the conical opening and the scraper on one side of the conical block, during the positioning and locking process, the impurities in the conical opening are automatically cleaned by the conical block and the scraper and discharged through the discharge hole, effectively avoiding the influence of impurities on the positioning accuracy, and the conical surface can be used for further precise positioning; by driving the electric push rod to extend, it can realize three-stage movement, and can firmly fix the first sliding rod in the first installation hole, so that when it stops moving, it is firmly fixed on the platen and cannot move.

[0024] 2. A stage vehicle platform with a positioning and locking device disclosed by the present invention realizes the precise positioning and firm locking of the moving plate through the coordinated action of an electric push rod, a linkage mechanism, and an electromagnet. At the same time, it integrates the function of automatically cleaning impurities, ensuring the stability and safety of the moving plate. When movement is required, the locking can be quickly released through a series of mechanical actions, with simple and efficient operation, improving the flexibility of stage layout and adjustment.

[0025] Other advantages, objectives, and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, where:

[0027] Figure 1 is a three-dimensional structural schematic diagram of a stage vehicle platform with a positioning and locking device of the present invention;

[0028] Figure 2 For the present invention Figure 1 is a schematic diagram of the connection structure between the connecting seat and the AGV cart in the present invention;

[0029] Figure 3 For the present invention Figure 1 is a partial cross-sectional view of the middle platform board in the present invention;

[0030] Figure 4 For the present invention Figure 1 is a partial schematic diagram of the connecting seat in the present invention;

[0031] Figure 5 For the present invention Figure 1 is a schematic diagram of the sliding block structure in the present invention;

[0032] Figure 6 For the present invention Figure 1 is a schematic diagram of the lifting rod structure in the present invention;

[0033] Figure 7 For the present invention Figure 1 is a schematic diagram of the insertion board structure in the present invention.

[0034] Reference numerals: 1, platen; 2, moving plate; 3, AGV cart; 4, connecting seat; 5, first fixing rod; 6, fixing seat; 7, electric push rod; 8, sliding block; 9, connecting block; 10, connecting rod; 11, guiding seat; 12, guiding rod; 13, pushing bar; 14, groove; 15, first sliding rod; 16, tapered opening; 17, first spring; 18, first limiting ring; 19, discharging hole; 20, first mounting hole; 21, lifting rod; 22, rectangular hole; 23, tapered table; 24, second spring; 25, first mounting groove; 26, inserting plate; 27, second mounting groove; 28, sliding bar; 29, second fixing rod; 30, third spring; 31, third mounting groove; 32, second limiting ring; 33, fourth spring; 34, first bevel edge; 35, step groove; 36, second bevel edge; 37, waist-shaped hole; 38, electromagnet; 39, tapered block; 40, scraper; 41, ball nut; 42, lead screw; 43, clamping groove. Detailed implementation manners

[0035] The following specific examples illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0036] As Figures 1-7 shown, a stage vehicle platform with a positioning and locking device includes a platen 1 and a moving plate 2 movably arranged on the platen 1. An AGV cart 3 is fixed to the bottom of the moving plate 2 by bolts or welding. The AGV cart 3 can drive the moving plate 2 to move on the platen 1. Two groups of first fixing rods 5 are fixedly arranged at the bottom of the moving plate 2 by welding or bolts. The outer walls of each group of first fixing rods 5 are slidably sleeved with the same connecting seat 4. The load-bearing capacity of the connecting seat 4 is static ≥ 2t and dynamic ≥ 1.2t. The connecting seat 4 is used to increase the contact area between the moving plate 2 and the platen 1 and improve stability. The AGV cart 3 can move precisely.

[0037] A lifting rod 21 is liftably arranged in the connecting seat 4. A plurality of grooves 14 are formed in the top of the platen 1. A first sliding rod 15 is slidably arranged in the grooves 14. The first sliding rod 15 and the lifting rod 21 are used in cooperation. When the lifting rod 21 moves upward, it can pull the first sliding rod 15 upward, thereby fixing the connecting seat 4 on the platen 1.

[0038] To achieve the fixation of the connecting seat 4 and the rising of the first sliding rod 15, a driving mechanism is provided. The driving mechanism includes two sliding blocks 8 slidably arranged on the top of the AGV cart 3 through a slide rail. Two fixing seats 6 are fixedly arranged on the top of the AGV cart 3 by welding or bolts. One side of the two fixing seats 6 is fixedly provided with the same electric push rod 7 through welding. The output end of the electric push rod 7 is connected to the two sliding blocks 8 through a connecting piece. When the electric push rod 7 expands and contracts, it can drive the sliding blocks 8 to slide on the AGV cart 3. The outer end of the sliding block 8 is provided with a first bevel edge 34, and one side of the connecting seat 4 is provided with a rectangular hole 22 adapted to the sliding block 8. When the sliding block 8 slides, it can push the connecting seat 4 to descend through the first bevel edge 34 and the rectangular hole 22.

[0039] The specific structure of the connecting piece is as follows: a connecting block 9 slidably arranged on the top of the AGV cart 3 through a slide rail and a slider. The output end of the electric push rod 7 is fixedly connected to the connecting block 9 by welding or bolts. Two connecting rods 10 are rotatably arranged on the connecting block 9 through a rotating shaft and a bearing. The other end of the connecting rod 10 is also rotatably connected to the corresponding sliding block 8 through a rotating shaft and a bearing. In this way, when the electric push rod 7 expands and contracts, it can drive the two sliding blocks 8 to slide simultaneously through the connecting block 9 and the connecting rods 10.

[0040] The bottom of the connecting seat 4 is provided with a first mounting hole 20 coaxial with the lifting rod 21. A second spring 24 is sleeved on the outer wall of the lifting rod 21 and is located in the first mounting hole 20. The top end of the second spring 24 is fixedly connected to the top wall of the first mounting hole 20, and the bottom end abuts against the limiting flange of the lifting rod 21, which is used to drive the lifting rod 21 to move upward for reset. The top of the lifting rod 21 is fixedly provided with a conical platform 23 by welding. The outer top end of the sliding block 8 is provided with a stepped groove 35, and one side of the stepped groove 35 is provided with a second bevel edge 36. When the sliding block 8 slides, it can push the conical platform 23 to move upward through the second bevel edge 36, thereby driving the lifting rod 21 to rise. One side of the sliding block 8 is also provided with a waist-shaped hole 37 corresponding to the lifting rod 21, which is used to prevent interference between the sliding block 8 and the lifting rod 21 when the sliding block 8 slides.

[0041] To clean the impurities on the first sliding rod 15, a cleaning component is provided. The cleaning component includes a ball nut 41 fixedly arranged at the bottom end of the lifting rod 21 by welding. A lead screw 42 is slidably arranged in the ball nut 41. An electromagnet 38 is fixedly arranged at the bottom of the lead screw 42 by welding or bolts. The adsorption force of the electromagnet 38: ≥200N. When the electromagnet 38 is energized, it can adsorb on the first sliding rod 15. In this way, when the lifting rod 21 moves upward, the first sliding rod 15 can be driven to move upward by the electromagnet 38 and inserted into the first mounting hole 20. A tapered opening 16 is formed at the top of the first sliding rod 15. A discharge hole 19 communicating with the tapered opening 16 is also formed at the top of the first sliding rod 15 for discharging slag. A tapered block 39 adapted to the tapered opening 16 is fixedly arranged at the bottom of the electromagnet 38 by welding or bolts. A scraper 40 is fixedly arranged on the outer side of the tapered block 39 by bolts. When the lifting rod 21 descends, it can drive the electromagnet 38 and the tapered block 39 to descend. At the same time, the cooperation of the ball nut 41 and the lead screw 42 can be used to drive the tapered block 39 to rotate. During the rotation process, the impurities in the tapered opening 16 can be cleaned by the scraper 40, and the cleaned impurities can be automatically discharged downward through the discharge hole 19.

[0042] To reset the connecting seat 4, a third mounting groove 31 coaxial with the first fixing rod 5 is formed at the bottom of the connecting seat 4. A second limiting ring 32 is slidably arranged in the third mounting groove 31. The second limiting ring 32 is fixedly arranged at the bottom end of the first fixing rod 5 by welding. A fourth spring 33 is sleeved on the outer wall of the first fixing rod 5 and is located in the third mounting groove 31. The two ends of the fourth spring 33 are respectively fixedly connected with the top wall of the third mounting groove 31 and the top of the second limiting ring 32, and are used to drive the connecting seat 4 to move upward for reset. In this way, when the sliding block 8 moves away from the rectangular hole 22, the connecting seat 4 can move upward for reset under the action of the fourth spring 33.

[0043] To reset the first sliding rod 15, a first limiting ring 18 is fixedly sleeved on the outer wall of the bottom end of the first sliding rod 15 by welding. A first spring 17 is sleeved on the outer wall of the first sliding rod 15. The two ends of the first spring 17 are respectively fixedly connected with the bottom of the table board 1 and the top of the first limiting ring 18, and are used to drive the first sliding rod 15 to move downward for reset.

[0044] To improve the sliding stability of the sliding block 8, guide rods 12 are fixedly arranged on both sides of the inner fixed seat 6 by welding. The material of the guide rods 12 is GCr15 bearing steel (straightness ≤0.02mm / m). A guide seat 11 is slidably sleeved on the outer wall of the guide rods 12. The guide seat 11 is fixedly connected with the corresponding sliding block 8 by welding for guiding the sliding block 8.

[0045] To lock the first sliding rod 15, a locking member is provided. The locking member includes a first installation groove 25 and a second installation groove 27 formed in the connecting seat 4, and the first installation groove 25 communicates with the second installation groove 27. A plug plate 26 is slidably arranged in the first installation groove 25, and a sliding bar 28 located in the second installation groove 27 is fixedly arranged at the top of the plug plate 26 by welding. A push bar 13 corresponding to the sliding bar 28 is fixedly arranged at one side of the guiding seat 11 by welding. When the guiding seat 11 moves, it can push the sliding bar 28 to move, thereby driving the plug plate 26 to move. A clamping groove 43 adapted to the outer wall of the first sliding rod 15 is formed on one side of the plug plate 26. When the plug plate 26 moves, the first sliding rod 15 can be locked through the clamping groove 43, effectively preventing the first sliding rod 15 from detaching from the electromagnet 38.

[0046] A second fixing rod 29 is fixedly arranged in the second installation groove 27 by welding, and the sliding bar 28 is slidably sleeved on the second fixing rod 29. A third spring 30 is sleeved on the outer wall of the second fixing rod 29, and both ends of the third spring 30 are fixedly connected to one inner wall of the second installation groove 27 and one side of the sliding bar 28 respectively. In this way, when the push bar 13 no longer pushes the sliding bar 28, the third spring 30 can drive the sliding bar 28 and the plug plate 26 to move back to their original positions, thereby releasing the lock on the first sliding rod 15.

[0047] When the stage vehicle platform with the positioning and locking device is in use, the device is powered on, and the AGV cart 3 is started through the controller. Since the moving plate 2 is fixed on the AGV cart 3, the moving plate 2 can be driven to move during the movement of the AGV cart 3 until the set position is reached;

[0048] Then, the electric push rod 7 is started to retract. During the retraction of the electric push rod 7, the connecting block 9 can be driven to move. During the movement of the connecting block 9, the sliding block 8 can be driven to move outwards by using the connecting rod 10. During the outward movement of the sliding block 8, the connecting seat 4 can be driven to move downwards by using the first bevel edge 34 and the rectangular hole 22. During the downward movement of the connecting seat 4, the fourth spring 33 can be compressed in cooperation with the second limiting ring 32. At the same time, during the downward movement of the connecting seat 4, the lifting rod 21 can also be driven to move downwards by using the second spring 24. The downward movement of the lifting rod 21 can drive the conical block 39 to move downwards. When the conical block 39 contacts the corresponding conical opening 16, continuing to move downwards can drive the electromagnet 38 to rotate by using the ball nut 41 and the lead screw 42. The rotation of the electromagnet 38 can drive the conical block 39 to rotate. During the rotation of the conical block 39, the impurities in the conical opening 16 can be cleaned by using the scraper 40, and the cleaned impurities can be discharged through the discharge hole 19 until the top end of the first sliding rod 15 abuts against the electromagnet 38. Then, the electromagnet 38 is started to make it adsorb on the first sliding rod 15 and the bottom end of the lifting rod 21. At this time, the bottom of the connecting seat 4 abuts against the table board 1;

[0049] Next, continue to start the electric push rod 7 to retract, driving the sliding block 8 to move. During the moving process, the second bevel edge 36 can be used to drive the tapered platform 23 to move upward. The upward movement of the tapered platform 23 can drive the lifting rod 21 to move upward. The upward movement of the lifting rod 21 can use the electromagnet 38 to drive the first sliding rod 15 to move upward until the first sliding rod 15 is inserted into the first mounting hole 20. At this time, the AGV cart 3 will not move. At the same time, the push bar 13 can be driven to move during the movement of the sliding block 8. When the lifting rod 21 moves upward in place, the push bar 13 abuts against one side of the sliding bar 28.

[0050] Finally, continue to start the electric push rod 7 to retract, driving the sliding block 8 to move. The movement of the sliding block 8 can drive the push bar 13 to move. The movement of the push bar 13 can push the sliding bar 28 to move. The movement of the sliding bar 28 can drive the insertion plate 26 to move until the card slot 43 on the insertion plate 26 is stuck on the first sliding rod 15, which can limit the position of the first sliding rod 15.

[0051] When it is necessary to release the fixation of the moving plate 2, start the electric push rod 7 to extend, which can drive the sliding block 8 to move back. During the process of the sliding block 8 moving back, the push bar 13 can be driven to move away from the sliding bar 28. The sliding bar 28 can move back under the action of the third spring 30. The movement of the sliding bar 28 can drive the insertion plate 26 to move, making the card slot 43 move away from the first sliding rod 15. Then continue to extend, so that the tapered platform 23 moves to the step groove 35. At this time, the lifting rod 21 can move back under the action of the second spring 24. Then turn off the electromagnet 38. At this time, the first sliding rod 15 can move back under the action of the first spring 17. The lead screw 42 can move down and rotate under the gravity of the tapered block 39. Then continue to start the electric push rod 7 to extend, continuing to drive the sliding block 8 to move. When the first bevel edge 34 on one side of the sliding block 8 is away from the first mounting hole 20, the connecting seat 4 can move back upward under the action of the fourth spring 33, moving away from the table board 1. At this time, the moving plate 2 can move.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A stage vehicle with a positioning and locking device, characterized in that: It comprises a platform (1) and a movable plate (2) movably arranged on the platform (1), wherein an AGV trolley (3) located on the platform (1) is fixed to the bottom of the movable plate (2); Two groups of first fixing rods (5) are fixedly provided at the bottom of the movable plate (2), and the outer wall of each group of first fixing rods (5) is slidably sleeved with a connecting seat (4) for increasing the contact area between the movable plate (2) and the table plate (1); A lifting rod (21) is provided in the connection seat (4) so ​​as to be liftable. A plurality of grooves (14) are provided on the top of the table (1). A first sliding rod (15) is provided in the groove (14) so ​​as to be slideable. The first sliding rod (15) cooperates with the lifting rod (21) to fix the connection seat (4) on the table (1). A driving mechanism, arranged on the AGV trolley (3), used for driving the connecting seat (4) to contact the upper surface of the platform (1) and driving the first sliding rod (15) to move upward and insert into the corresponding connecting seat (4); A cleaning component is arranged at the bottom end of the lifting rod (21) and is used in conjunction with the lifting rod (21) to clean impurities on the first sliding rod (15) during the descending process.

2. A stage vehicle with a positioning and locking device as claimed in claim 1, characterized in that: The driving mechanism comprises two sliding blocks (8) slidably arranged on the top of the AGV trolley (3); two fixed seats (6) are fixedly arranged on the top of the AGV trolley (3); one side of the two fixed seats (6) is penetrated and fixedly provided with a same electric push rod (7); the output end of the electric push rod (7) is connected to the two sliding blocks (8) through a connecting piece, and is used to drive the sliding blocks (8) to slide on the AGV trolley (3); the outer end of the sliding block (8) is provided with a first bevel (34); and one side of the connecting seat (4) is provided with a rectangular hole (22) adapted to the sliding block (8).

3. A stage vehicle with a positioning and locking device as claimed in claim 2, characterized in that: The connecting member comprises a connecting block (9) slidably arranged on the top of the AGV trolley (3); the output end of the electric push rod (7) is fixedly connected to the connecting block (9); two connecting rods (10) are rotatably arranged on the connecting block (9); the other end of the connecting rod (10) away from the connecting block (9) is rotatably connected to a corresponding sliding block (8).

4. A stage vehicle with a positioning and locking device as claimed in claim 3, characterized in that: The bottom of the connecting seat (4) is provided with a first mounting hole (20) coaxial with the lifting rod (21); the outer wall of the lifting rod (21) is sleeved with a second spring (24) located in the first mounting hole (20); the top of the lifting rod (21) is fixedly provided with a conical platform (23); the top of the outer end of the sliding block (8) is provided with a step groove (35); one side of the step groove (35) is provided with a second oblique edge (36); and one side of the sliding block (8) is provided with a waist-shaped hole (37) corresponding to the lifting rod (21).

5. A stage vehicle with a positioning and locking device as claimed in claim 4, characterized in that: The cleaning assembly comprises a ball nut (41) fixedly arranged at the bottom end of the lifting rod (21), a screw rod (42) slidingly arranged in the ball nut (41), an electromagnet (38) for adsorbing the first sliding rod (15) fixedly arranged at the bottom of the screw rod (42), a conical opening (16) formed at the top of the first sliding rod (15), a discharge hole (19) connected to the conical opening (16) formed at the top of the first sliding rod (15) for discharging slag, a conical block (39) adapted to the conical opening (16) fixedly arranged at the bottom of the electromagnet (38), a scraper (40) for cleaning the conical opening (16) provided on the outer side of the conical block (39), and a locking member for limiting the position of the first sliding rod (15) provided in the connecting seat (4).

6. A stage vehicle with a positioning and locking device as claimed in claim 1, characterized in that: The bottom of the connecting seat (4) is provided with a third mounting groove (31) coaxial with the first fixing rod (5), a second limiting ring (32) is slidably provided in the third mounting groove (31), the second limiting ring (32) is fixedly provided at the bottom end of the first fixing rod (5), the outer wall of the first fixing rod (5) is sleeved with a fourth spring (33) located in the third mounting groove (31), the two ends of the fourth spring (33) are respectively fixedly connected to the top wall of the third mounting groove (31) and the top of the second limiting ring (32), and are used to drive the connecting seat (4) to reset upward.

7. A stage vehicle with a positioning and locking device as claimed in claim 5, characterized in that: The bottom outer wall of the first sliding rod (15) is fixedly sleeved with a first limiting ring (18), and the outer wall of the first sliding rod (15) is sleeved with a first spring (17), and the two ends of the first spring (17) are respectively fixedly connected to the bottom of the table (1) and the top of the first limiting ring (18), so as to drive the first sliding rod (15) to return to its original position and move downward.

8. A stage vehicle with a positioning and locking device as claimed in claim 5, characterized in that: Guide rods (12) are fixedly provided on both sides of the inner fixed seat (6), and a guide seat (11) is provided on the outer wall sliding sleeve of the guide rod (12). The guide seat (11) is fixedly connected to the corresponding sliding block (8) for guiding the sliding block (8).

9. A stage vehicle with a positioning and locking device as claimed in claim 8, characterized in that: The locking member comprises a first mounting groove (25) and a second mounting groove (27) which are provided in the connecting seat (4); the first mounting groove (25) and the second mounting groove (27) are connected; a plug plate (26) is slidably provided in the first mounting groove (25); a sliding bar (28) located in the second mounting groove (27) is fixedly provided on the top of the plug plate (26); a push bar (13) corresponding to the sliding bar (28) is fixedly provided on one side of the guide seat (11) for driving the sliding bar (28) to move; and a card slot (43) which is adapted to the outer wall of the first sliding rod (15) is provided on one side of the plug plate (26).

10. A stage vehicle with a positioning and locking device as claimed in claim 9, characterized in that: A second fixing rod (29) is fixedly provided in the second mounting groove (27), the sliding bar (28) is slidably sleeved on the second fixing rod (29), the outer wall of the second fixing rod (29) is sleeved with a third spring (30), and two ends of the third spring (30) are respectively fixedly connected to an inner wall of one side of the second mounting groove (27) and one side of the sliding bar (28).

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