Stage car platform with positioning and locking device

Abstract

The invention relates to a stage car platform with a positioning and locking device. An AGV located on a platform plate is fixed to the bottom of a movable plate. 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 used for increasing the contact area of the moving plate and the table plate; a lifting rod is arranged in the connecting base in a liftable mode, a plurality of grooves are formed in the top of the table plate, first sliding rods matched with the lifting rod for use are arranged in the grooves in a sliding mode, and the connecting base is fixed to the table plate; the driving mechanism is arranged on the AGV and used for driving the connecting bases to abut against the upper surface of the platen and driving the first sliding rods to move upwards to be inserted into the corresponding connecting bases. The cleaning assembly is arranged at the bottom end of the lifting rod and used in cooperation with the lifting rod, and impurities on the first sliding rod are cleaned in the descending process. The problems that in the using process of an existing stage moving plate on a stage car platform, the locking and unlocking processes are not rapid, an electric control system is complex, and use is inconvenient are solved.

Description

Technical Field

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

[0002] In order to improve the performance of the stage, multiple movable boards are often set up on the stage, which provide more space and flexibility for the actors' performances. The actors can perform various performance actions on the movable boards, and the movable boards need to move or stop accurately according to the rhythm and plot of the performance to ensure the safety of the actors and the continuity of the performance.

[0003] In order to ensure the stability of the mobile board after moving, a variety of fixing methods are usually used. For example, some mobile boards are fixed by limit devices and clamps. The limit devices can prevent the mobile board from deviating during movement, while the clamps are used to fix the mobile board tightly 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, further enhancing the stability of the mobile board.

[0004] In addition, in some complex stage designs, the fixing of the moving 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 moving plate can be achieved. When the moving plate reaches the specified position, the servo motor can tighten the fixing device through the threaded rod, thereby firmly fixing the moving plate on the stage.

[0005] These fixing methods not only ensure the stability of the mobile board during the performance, but also improve the safety and reliability of the stage, providing a safer performance environment for the actors. However, the coordination between the limit device and the clamp in the above technical means has the problem that the locking and unlocking process of the mobile board is not fast, and the use of an automated control system has the problem of a complex electronic control system. Therefore, it is necessary to design a stage vehicle control device that is more convenient and faster to lock and unlock. Summary of the invention

[0006] In view of this, the present invention provides a stage vehicle with a positioning locking device in order to solve the problems that the locking and unlocking process of the stage movable plate on the existing stage vehicle is slow and the electric control system is complicated, resulting in inconvenience in use.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A stage vehicle platform with a positioning and locking device comprises a platform and a movable plate movably arranged on the platform, and an AGV trolley located on the platform is fixed at the bottom of the movable plate;

[0009] Two groups of first fixing rods are fixedly provided at the bottom of the movable plate, and the outer wall of each group of first fixing rods is slidably sleeved with a connecting seat for increasing the contact area between the movable plate and the table plate;

[0010] A lifting rod is provided in the connection seat for lifting and lowering, and a plurality of grooves are provided on the top of the table plate. A first sliding rod is provided for sliding in the grooves. The first sliding rod cooperates with the lifting rod to fix the connection seat on the table plate.

[0011] The driving mechanism is arranged on the AGV trolley and is used to drive the connecting seat to contact the upper surface of the table and drive the first sliding rod to move upward and insert into the corresponding connecting seat;

[0012] The cleaning component is arranged at the bottom end of the lifting rod and is used in conjunction with the lifting rod to clean 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 trolley, two fixed seats are fixedly arranged on the top of the AGV trolley, and the same electric push rod is fixedly arranged through one side of the two fixed seats. The output end of the electric push rod is connected to the two sliding blocks through a connecting piece, which is used to drive the sliding blocks to slide on the AGV trolley. A first bevel is provided at the outer end of the sliding block, and a rectangular hole matching the sliding block is provided on one side of the connecting seat.

[0014] Furthermore, the connecting member includes a connecting block slidably arranged on the top of the AGV trolley, 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 end of the connecting rod is rotatably connected to the corresponding sliding block.

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

[0016] Furthermore, the cleaning assembly includes a ball nut fixed at the bottom end of the lifting rod, a screw rod is slidably provided in the ball nut, an electromagnet for adsorbing the first sliding rod is fixedly provided at the bottom of the screw rod, a conical opening is provided at the top of the first sliding rod, a discharge hole connected to the conical opening is provided at the top of the first sliding rod for slag discharge, a conical block adapted to the conical opening is fixedly provided at the bottom of the electromagnet, a scraper for cleaning the conical opening is provided on the outer side of the conical block, and a locking member for limiting the first sliding rod is provided in the connecting seat.

[0017] Furthermore, a third mounting groove coaxial with the first fixed rod is formed at the bottom of the connecting seat, a second limiting ring is slidably provided in the third mounting groove, the second limiting ring is fixedly provided at the bottom end of the first fixed rod, and the outer wall of the first fixed rod is sleeved with a fourth spring located in the third mounting groove, and the two ends of the fourth spring are respectively fixedly connected to the top wall of the third mounting groove and the top of the second limiting ring, so as to drive the connecting seat to reset upward.

[0018] Furthermore, a first limiting ring is fixedly sleeved on the outer wall of the bottom end of the first sliding rod, and 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 to the bottom of the table and the top of the first limiting ring, so as to drive the first sliding rod to reset downward.

[0019] Furthermore, guide rods are fixedly provided on both sides of the inner fixed seat, and the outer wall sliding sleeve of the guide rod is provided with a guide seat, and the guide seat is fixedly connected to the corresponding sliding block for guiding the sliding block.

[0020] Furthermore, the locking member includes a first mounting groove and a second mounting groove opened in the connecting seat, the first mounting groove and the second mounting groove are connected, an insert plate is slidably provided in the first mounting groove, a sliding bar located in the second mounting groove is fixedly provided on the top of the insert plate, a push bar corresponding to the sliding bar is fixedly provided on one side of the guide seat for driving the sliding bar to move, and a card groove adapted to the outer wall of the first sliding rod is opened on one side of the insert plate.

[0021] Furthermore, a second fixing rod is fixed in the second installation groove, the sliding bar is slidably sleeved on the second fixing rod, and 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 to the inner wall of one side of the second installation groove and one side of the sliding bar.

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

[0023] 1. A stage platform with a positioning and locking device disclosed in the present invention realizes accurate positioning and support of the AGV trolley at a set position through the precise cooperation of an electric push rod, a connecting rod mechanism and a connecting seat, thereby ensuring the safety and stability of stage performances; through the cooperation of the tapered mouth with a scraper on one side of the tapered block, the tapered block and the scraper are used to automatically clean the impurities in the tapered mouth during the positioning and locking process, and discharge them through the discharge hole, thereby effectively avoiding the influence of impurities on the positioning accuracy, and being able to use the tapered surface 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 mounting hole, so that when it stops moving, it is firmly fixed on the table plate and cannot move.

[0024] 2. The stage trolley with a positioning and locking device disclosed in the present invention realizes the precise positioning and firm locking of the movable plate through the coordinated action of the electric push rod, the connecting rod mechanism and the electromagnet, and integrates the function of automatic cleaning of impurities, thereby ensuring the stability and safety of the movable plate. When it is necessary to move, it can be quickly unlocked through a series of mechanical actions. The operation is simple and efficient, and the flexibility of stage layout and adjustment is improved.

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

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

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

[0028] Figure 2 For the present invention Figure 1 Schematic diagram of the connection structure between the middle connector and the AGV trolley;

[0029] Figure 3 For the present invention Figure 1 Partial cross-sectional view of the middle platform;

[0030] Figure 4 For the present invention Figure 1 Partial schematic diagram of the middle connector;

[0031] Figure 5 For the present invention Figure 1 Schematic diagram of the sliding block structure;

[0032] Figure 6 For the present invention Figure 1 Schematic diagram of the middle lifting rod structure;

[0033] Figure 7 For the present invention Figure 1 Schematic diagram of the middle plug board structure.

[0034] Figure numerals: 1, table; 2, moving plate; 3, AGV trolley; 4, connecting seat; 5, first fixed rod; 6, fixed seat; 7, electric push rod; 8, sliding block; 9, connecting block; 10, connecting rod; 11, guide seat; 12, guide rod; 13, push strip; 14, groove; 15, first sliding rod; 16, tapered mouth; 17, first spring; 18, first limiting ring; 19, discharge hole; 20, first mounting hole; 21, lifting rod; 22, rectangular hole; 23. Conical table; 24. Second spring; 25. First mounting groove; 26. Insert 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; 35. Step groove; 36. Second bevel; 37. Waist-shaped hole; 38. Electromagnet; 39. Conical block; 40. Scraper; 41. Ball nut; 42. Screw rod; 43. Slot. DETAILED DESCRIPTION

[0035] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0036] like Figure 1-Figure 7 The stage vehicle with a positioning and locking device shown in the figure comprises a platform 1 and a mobile plate 2 movably arranged on the platform 1. An AGV trolley 3 is fixed to the bottom of the mobile plate 2 by bolts or welding. The AGV trolley 3 can drive the mobile plate 2 to move on the platform 1. Two groups of first fixing rods 5 are fixed by welding or bolts at the bottom of the mobile plate 2. The outer wall of each group of first fixing rods 5 is slidably sleeved with the same connecting seat 4. The 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 mobile plate 2 and the platform 1 to improve stability. The AGV trolley 3 can move precisely.

[0037] A lifting rod 21 is provided in the connection seat 4 for lifting and lowering, and a plurality of grooves 14 are provided on the top of the table 1, and a first sliding rod 15 is provided for sliding in the groove 14. The first sliding rod 15 cooperates with the lifting rod 21, and when the lifting rod 21 moves upward, the first sliding rod 15 can be pulled upward to fix the connection seat 4 on the table 1.

[0038] In order to achieve the fixation of the connecting seat 4 and the rise of the first sliding rod 15, a driving mechanism is provided. The driving mechanism includes two sliding blocks 8 which are arranged on the top of the AGV trolley 3 through sliding rails. Two fixing seats 6 are fixed on the top of the AGV trolley 3 by welding or bolts. One side of the two fixing seats 6 is fixedly provided with the same electric push rod 7 by 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 is extended or retracted, the sliding block 8 can be driven to slide on the AGV trolley 3. A first bevel 34 is provided at the outer end of the sliding block 8, and a rectangular hole 22 which is adapted to the sliding block 8 is provided on one side of the connecting seat 4. When the sliding block 8 slides, the connecting seat 4 can be pushed down through the first bevel 34 and the rectangular hole 22.

[0039] The specific structure of the connecting piece is as follows: a connecting block 9 is slidably arranged on the top of the AGV trolley 3 through a slide rail and a slider, and 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, and 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 is extended or retracted, the two sliding blocks 8 can be driven to slide simultaneously through the connecting block 9 and the connecting rod 10.

[0040] A first mounting hole 20 coaxial with the lifting rod 21 is provided at the bottom of the connecting seat 4, and a second spring 24 located in the first mounting hole 20 is sleeved on the outer wall of the lifting rod 21. The top 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 reset upward. A conical platform 23 is fixed on the top of the lifting rod 21 by welding, and a step groove 35 is provided on the top of the outer end of the sliding block 8, and a second bevel 36 is provided on one side of the step groove 35. When the sliding block 8 slides, the conical platform 23 can be pushed upward by the second bevel 36, thereby driving the lifting rod 21 to rise. A waist-shaped hole 37 corresponding to the lifting rod 21 is also provided on one side of the sliding block 8, which is used to prevent the sliding block 8 from interfering with the lifting rod 21 when sliding.

[0041] In order to clean the impurities on the first sliding rod 15, a cleaning assembly is provided. The cleaning assembly includes a ball nut 41 fixed at the bottom end of the lifting rod 21 by welding, and a screw 42 is slidably provided in the ball nut 41. The bottom of the screw 42 is fixed with an electromagnet 38 by welding or bolts, and the adsorption force of the electromagnet 38 is ≥200N. The electromagnet 38 can be adsorbed on the first sliding rod 15 when powered on, so that when the lifting rod 21 moves upward, the electromagnet 38 can be used to drive the first sliding rod 15 to move upward so that it can be inserted into the first mounting hole 20. A conical opening 16 is provided at the top of the first sliding rod 15, and a discharge hole 19 connected to the conical opening 16 is also provided at the top of the first sliding rod 15 for slag discharge. A conical block 39 adapted to the conical opening 16 is fixed at the bottom of the electromagnet 38 by welding or bolts, and a scraper 40 is fixed to the outside of the conical block 39 by bolts. When the lifting rod 21 descends, it can drive the electromagnet 38 and the conical block 39 to descend. At the same time, the ball nut 41 and the screw rod 42 can cooperate to drive the conical block 39 to rotate. During the rotation, the scraper 40 can be used to clean the impurities in the conical mouth 16, and the cleaned impurities can be automatically discharged downward through the discharge hole 19.

[0042] In order to reset the connection seat 4, a third mounting groove 31 coaxial with the first fixing rod 5 is provided at the bottom of the connection seat 4, and 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 by welding, and a fourth spring 33 located in the third mounting groove 31 is sleeved on the outer wall of the first fixing rod 5. 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 connection seat 4 to reset upward. In this way, when the sliding block 8 is away from the rectangular hole 22, the connection seat 4 can reset upward under the action of the fourth spring 33.

[0043] In order to reset the first sliding rod 15, a first limiting ring 18 is provided on the outer wall of the bottom end of the first sliding rod 15 by welding a fixing sleeve, and a first spring 17 is provided on the outer wall of the first sliding rod 15. 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 reset downward.

[0044] In order to improve the sliding stability of the sliding block 8, guide rods 12 are fixedly provided on both sides of the inner fixing seat 6 by welding. The guide rods 12 are made of GCr15 bearing steel (straightness ≤ 0.02mm / m), and the outer wall sliding sleeve of the guide rods 12 is provided with a guide seat 11. The guide seat 11 is fixedly connected to the corresponding sliding block 8 by welding, and is used to guide the sliding block 8.

[0045] In order to lock the first sliding rod 15, a locking member is provided. The locking member includes a first mounting groove 25 and a second mounting groove 27 provided in the connecting seat 4, and 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, and a sliding bar 28 located in the second mounting groove 27 is fixedly provided on the top of the plug plate 26 by welding. A push bar 13 corresponding to the sliding bar 28 is fixedly provided on one side of the guide seat 11 by welding. When the guide seat 11 moves, the sliding bar 28 can be pushed to move, thereby driving the plug plate 26 to move. A card slot 43 adapted to the outer wall of the first sliding rod 15 is provided on one side of the plug plate 26. When the plug plate 26 moves, the first sliding rod 15 can be locked by the card slot 43, which can effectively prevent the first sliding rod 15 from being separated from the electromagnet 38.

[0046] A second fixing rod 29 is fixedly disposed in the second mounting 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 the two ends of the third spring 30 are respectively fixedly connected to the inner wall of one side of the second mounting groove 27 and one side of the sliding bar 28. 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 reset and move, thereby releasing the lock on the first sliding rod 15.

[0047] When the stage vehicle with the positioning locking device is used, the device is powered on, and the AGV trolley 3 is started to move through the controller. Since the moving plate 2 is fixed on the AGV trolley 3, the AGV trolley 3 can drive the moving plate 2 to move until the set position of the movement.

[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 connecting rod 10 can be used to drive the sliding block 8 to move outward. During the outward movement of the sliding block 8, the first bevel 34 and the rectangular hole 22 can be used to drive the connecting seat 4 to move downward. During the downward movement of the connecting seat 4, the second limiting ring 32 can be used to compress the fourth spring 33. At the same time, during the downward movement of the connecting seat 4, the second spring 24 can also be used to drive the lifting rod 21 to move downward. The downward movement of the lifting rod 21 can drive the conical block 39 to move downward. When the conical block 39 contacts the corresponding conical opening 16, it continues to move downward and can use the ball nut 41 and the screw rod 42 to drive the electromagnet 38 to rotate. The rotation of the electromagnet 38 can drive the conical block 39 to rotate. During the rotation of the conical block 39, the scraper 40 is used to clean the impurities in the conical opening 16. At the same time, the cleaned impurities can be discharged through the discharge hole 19 until the top of the first sliding rod 15 contacts the electromagnet 38. Then, the electromagnet 38 is started to be adsorbed 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 contacts the table 1.

[0049] Then, the electric push rod 7 is started to retract and drive the sliding block 8 to move. During the movement, the second bevel 36 can be used to drive the conical platform 23 to move upward. The upward movement of the conical platform 23 can drive the lifting rod 21 to move upward. The upward movement of the lifting rod 21 can drive the first sliding rod 15 to move upward by using the electromagnet 38 until the first sliding rod 15 is inserted into the first mounting hole 20. At this time, the AGV trolley 3 will not move. At the same time, the movement of the sliding block 8 can drive the push bar 13 to move. When the lifting rod 21 moves upward into place, the push bar 13 contacts one side of the sliding bar 28.

[0050] Finally, the electric push rod 7 is started to retract and drive the sliding block 8 to move. During the movement of the sliding block 8, the push bar 13 can be driven to move. The movement of the push bar 13 can drive the sliding bar 28 to move. The movement of the sliding bar 28 can drive the plug board 26 to move until the card slot 43 on the plug board 26 is stuck on the first sliding rod 15, so as to limit the first sliding rod 15.

[0051] When it is necessary to release the fixation of the movable plate 2, the electric push rod 7 is started to extend, which can drive the sliding block 8 to return to its original position. During the process of returning the sliding block 8, the push bar 13 can be driven to move away from the sliding bar 28, and the sliding bar 28 can be returned to its original position under the action of the third spring 30. The movement of the sliding bar 28 can drive the plug plate 26 to move, so that the card slot 43 is away from the first sliding rod 15, and then continue to extend, so that the conical platform 23 moves to the step groove 35. At this time, the lifting rod 21 can be returned to its original position under the action of the second spring 24, and then the electromagnet 38 is closed. At this time, the first sliding rod 15 can be returned to its original position under the action of the first spring 17, and the screw rod 42 can be returned to its original position and rotated downward under the gravity of the conical block 39, and then the electric push rod 7 is continued to be started to extend, and the sliding block 8 is continued to be driven to move. When the first beveled edge 34 on one side of the sliding block 8 is away from the first mounting hole 20, the connecting seat 4 can be returned to its original position upward under the action of the fourth spring 33, so that it is away from the table 1, and the movable plate 2 can move.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in 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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