Extension ladder for stage

Abstract

The extension ladder comprises a base, the top of the base is provided with an opening, the front side of the base is fixedly connected with a servo motor, the rear side of the servo motor is fixedly connected with a screw rod, the rear end of the screw rod penetrates through the base and is rotationally connected with the base, and the outer side of the screw rod is in threaded connection with two threaded sleeves; the left and right sides of the two threaded sleeves are fixedly connected with connecting strips, the sides, away from the threaded sleeves, of the connecting strips are fixedly connected with sleeves, a cross rod is installed in an inner cavity of each sleeve in a sleeving and penetrating mode, and the two ends of each cross rod are fixedly connected with the inner wall of the base. According to the telescopic ladder, two telescopic ladders can be spliced, the telescopic ladder can be suitable for a large stage, if the stage is not large, one telescopic ladder can be directly used, and each telescopic ladder is not large in size and convenient to transport.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of telescopic ladders, in particular to a telescopic ladder for stage. BACKGROUND

[0002] The stage is a space provided for performers to perform in a theater, which can make the attention of the audience focused on the performance of the performers and obtain the ideal viewing effect. In the process of stage performance, the appearance of some performers is usually from the bottom of the stage, and then the telescopic ladder (elevating platform) arranged at the bottom of the stage is used for rising, so as to raise the performer to the platform for subsequent performance.

[0003] Through retrieval, the China patent No. CN221322259 U discloses an adjustable ladder for stage, which comprises two pairs of main connecting rods arranged in parallel at intervals, a plurality of step plates connected between the two side main connecting rods, and the step plates are rotationally connected to the corresponding position main connecting rods through limiting screws on the side surfaces to realize folding. The top end of the higher main connecting rod is connected with a connecting head assembly for connecting with the stage platform. The utility model has the advantages of reasonable structure design, quick connection and disassembly with the stage platform, safe use, foldable overall structure, detachable handrail assembly, and effective reduction of the occupied area during transportation and storage.

[0004] For the related technology in the above, the inventors find that the following defects exist: the stage telescopic ladder of the prior art is usually an integrated structure, which has a large overall volume, and is inconvenient for transportation and installation, and it is difficult to adjust according to the size of different stages. Therefore, the present application provides a telescopic ladder for stage. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the problems mentioned in the background art, the present application provides a telescopic ladder for stage.

[0006] The telescopic ladder for stage provided by the present application adopts the following technical scheme: a telescopic ladder for stage, comprising a base, the top of the base is provided with an opening, and a servo motor is fixedly connected to the front side of the base, a screw rod is fixedly connected to the rear side of the servo motor, the rear end of the screw rod penetrates through the base and is rotationally connected with the base, and two threaded sleeves are threadedly connected to the outer side of the screw rod, two connecting strips are fixedly connected to the left and right sides of each threaded sleeve, a sleeve is fixedly connected to the side of each connecting strip away from the threaded sleeve, a horizontal rod is sleeved and installed through the inner cavity of each sleeve, and the two ends of the horizontal rod are fixedly connected with the inner wall of the base. A connecting plate is hingedly installed on the top of each connecting plate, a supporting plate is movably installed on the top of each connecting plate, a stop block is fixedly installed on the rear side of the supporting plate, and a splicing assembly is arranged on the outer side of the base.

[0007] Optionally, the splicing assembly comprises a plurality of side plates, each of the plurality of side plates is fixedly connected with a right side of the base, and each of the plurality of side plates is provided with a clamping groove on the right side.

[0008] Optionally, the clamping block and the clamping groove are matched, and a plurality of anti-skid lines are formed on the left side of the clamping block.

[0009] Optionally, the bottom of the support plate is fixedly connected with two handles near the left and right sides, and the two handles are arranged in front of and behind each other.

[0010] Optionally, the bottom of the base is fixedly installed with four pulleys, and the four pulleys are respectively located near the four corners of the bottom of the base.

[0011] Optionally, the bottom of the support plate is fixedly connected with a plurality of limiting rods, a limiting cylinder is sleeved and installed on the outside of each of the plurality of limiting rods, and the bottom of each of the plurality of limiting cylinders is fixedly connected with the inner wall of the base.

[0012] Optionally, the screw rod is symmetrically arranged about the side wall as the central axis.

[0013] In summary, the present application has the following beneficial technical effects:

[0014] 1. The utility model discloses a side plate, clamping block, baffle and other components are set up, through the mode that the clamping block is inserted into the inside of the clamping groove, the splicing between two telescopic ladders can be realized, can be applicable to the use of larger stage, if the stage is not big, then directly uses a group, and each telescopic ladder is not big, convenient transportation.

[0015] 2. The utility model discloses a screw rod, connecting strip and motor and other components are set up, through the rotation of screw rod driven by servo motor, two threaded sleeves are relatively moved by screw rod, two threaded sleeves respectively drive corresponding connecting strip to move, use the movement of connecting strip to push support plate to move, realize the support of stage, complete telescopic purpose. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of splicing in the embodiment of the application.

[0017] Figure 2 It is the external structure schematic diagram of one angle in the embodiment of the application.

[0018] Figure 3 It is the external structure schematic diagram of another angle in the embodiment of the application.

[0019] Figure 4 It is the internal structure schematic diagram of the bottom shell in the embodiment of the application.

[0020] Figure 5 is a structural schematic diagram of a screw and other components in the embodiments of the present application.

[0021] The figure reference: 1, base; 2, pulley; 3, side plate; 4, clamping groove; 5, clamping block; 6, anti-skid pattern; 7, limiting cylinder; 8, limiting rod; 9, support plate; 10, handle; 11, servo motor; 12, screw; 13, threaded sleeve; 14, connecting strip; 15, sleeve; 16, crossbar; 17, connecting plate; 18, stop block. DETAILED DESCRIPTION

[0022] The following will be combined with the Figures 1-5 The present application is further described in detail.

[0023] The embodiments of the present application disclose a stage telescopic ladder, which comprises a base 1, the top of the base 1 is provided with an opening, and the front side of the base 1 is fixedly connected with a servo motor 11, the rear side of the servo motor 11 is fixedly connected with a screw 12, the screw 12 is driven to rotate by the servo motor 11, the rear end of the screw 12 penetrates through the base 1 and is rotationally connected with the base 1, and the outer side of the screw 12 is threadedly connected with two threaded sleeves 13, the two threaded sleeves 13 are relatively moved by the rotation of the screw 12, the left and right sides of the two threaded sleeves 13 are fixedly connected with connecting strips 14, the side, away from the threaded sleeve 13, of the connecting strip 14 is fixedly connected with a sleeve 15, the crossbar 16 is installed through the sleeve 15, the two ends of the crossbar 16 are fixedly connected with the inner wall of the base 1, the sleeve 15 is moved by the threaded sleeve 13, the connecting plate 17 is hingedly installed on the top of the sleeve 15, the support plate 9 is movably installed on the top of the connecting plate 17, the connecting plate 17 is moved by the sleeve 15, the support plate 9 is moved by the connecting plate 17, the stage is formed by the support plate 9, the purpose of lifting the stage is achieved, the rear side of the support plate 9 is fixedly installed with a stop block 18, the outer side of the base 1 is provided with a splicing assembly, the splicing assembly is convenient for assembly.

[0024] Please refer to Figure 2 and Figure 3 The splicing assembly comprises a plurality of side plates 3, the right side of each of the plurality of side plates 3 is fixedly connected with the base 1, and the right side of each of the plurality of side plates 3 is provided with a clamping groove 4, the left side of the base 1 is fixedly connected with a plurality of clamping blocks 5, the splicing between the clamping block 5 and the side plate 3 is realized by inserting the clamping block 5 into the clamping groove 4, and the splicing between two bases 1 and even two telescopic ladders is further realized, which is convenient for subsequent use.

[0025] Please refer to Figure 3 The clamping block 5 and the clamping groove 4 are matched, and the left side of the clamping block 5 is provided with a plurality of anti-skid patterns 6, the friction is increased by the anti-skid patterns 6, and the firmness between two groups or even multiple groups of telescopic ladders is further improved, so that the stability is higher when used.

[0026] Please refer to Figure 4 The bottom of the support plate 9 is fixedly connected with two handles 10 near the left and right sides, and the two handles 10 are arranged front and back. The arrangement of the plurality of handles 10 can facilitate the pushing and displacement of the staff, and avoid side slipping during movement.

[0027] Please refer to Figure 2 and Figure 3 Four pulleys 2 are fixedly installed at the bottom of the base 1 near the four corners, and the arrangement of the plurality of pulleys 2 facilitates the movement and short-distance displacement of the telescopic ladder.

[0028] Please refer to Figure 4 A plurality of limiting rods 8 are fixedly connected to the bottom of the support plate 9, and a plurality of limiting cylinders 7 are installed on the outer sides of the plurality of limiting rods 8. The bottoms of the plurality of limiting cylinders 7 are fixedly connected to the inner wall of the base 1. The cooperation of the limiting rod 8 and the limiting cylinder 7 limits the upward and downward movement of the support plate 9, avoids derailment, and improves safety performance.

[0029] Please refer to Figure 4 and Figure 5 The screw rod 12 is symmetrically arranged about the center axis of the side wall, and the screw threads on the front and back sides are oppositely arranged. When the screw rod 12 rotates, it can drive the corresponding two threaded sleeves 13 to move relative to each other, thereby completing the subsequent stage lifting work.

[0030] The implementation principle of the telescopic ladder for stage according to the embodiment of the present application is as follows: first, the whole device is moved to a suitable position by the pulley 2, then the size of the stage is observed, if one set of device can meet the demand of the stage, the subsequent servo motor 11 can be directly driven to rotate the screw rod 12, the screw rod 12 drives the two threaded sleeves 13 to move relative to each other, the two threaded sleeves 13 drive the corresponding two connecting strips 14 to move, the two connecting strips 14 drive the corresponding sleeves 15 to move, the sleeves 15 drive the top connecting plate 17 to move, the movement of the connecting plate 17 drives the support plate 9 to move, after the support plate 9 moves to be in close contact with the bottom of the stage, the stage is pushed up by continuously driving the servo motor 11, the stage is lifted, the telescopic purpose is achieved, if the stage is large, two or more sets of devices need to be spliced, at this time, the clamping block 5 on one side of the base 1 is inserted into the clamping groove 4 on the other side of the base 1, after the plurality of clamping blocks 5 are inserted into the corresponding clamping grooves 4, the splicing is completed, the splicing operation is convenient, and then the plurality of servo motors 11 are synchronously driven to complete the subsequent work.

[0031] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A stage extension ladder comprising a base (1), characterised in that: The base (1) top is provided with an opening, and the base (1) front side is fixedly connected with a servo motor (11), the servo motor (11) rear side is fixedly connected with a screw rod (12), the screw rod (12) rear end penetrates the base (1), and is rotatably connected with the base (1), and the screw rod (12) outer side is threadedly connected with two threaded sleeves (13), two threaded sleeves (13) left and right sides are fixedly connected with connecting strips (14), the connecting strip (14) side away from the threaded sleeve (13) is fixedly connected with a sleeve (15), the sleeve (15) inner cavity is sleeved with a cross bar (16) penetratingly installed, the cross bar (16) both ends are fixedly connected with the inner wall of the base (1), the sleeve (15) top is hingedly installed with a connecting plate (17), a plurality of connecting plates (17) top are movably installed with a support plate (9), the support plate (9) rear side is fixedly installed with a stop block (18), the base (1) outer side is provided with a splicing assembly.

2. The stage extension ladder of claim 1, wherein: The splicing assembly comprises a plurality of side plates (3), a plurality of side plates (3) are fixedly connected with the right side of the base (1), and a plurality of side plates (3) are provided with clamping grooves (4) on the right side, and the left side of the base (1) is fixedly connected with a plurality of clamping blocks (5).

3. The stage extension ladder of claim 2, wherein: The clamping block (5) and the clamping groove (4) are matched, and a plurality of anti-skid lines (6) are formed on the left side of the clamping block (5).

4. The stage extension ladder of claim 1, wherein: The support plate (9) bottom is fixedly connected with two handles (10) near the left and right sides.

5. The stage extension ladder of claim 1, wherein: The base (1) bottom is fixedly connected with four pulleys (2), and the four pulleys (2) are respectively located near the corners of the base (1) bottom.

6. The stage extension ladder of claim 1, wherein: The support plate (9) bottom is fixedly connected with a plurality of limiting rods (8), and a plurality of limiting rods (8) are sleeved and installed with limiting cylinders (7) on the outer side, and the bottoms of the plurality of limiting cylinders (7) are fixedly connected with the inner wall of the base (1).

7. The stage extension ladder of claim 1, wherein: The screw rod (12) is symmetrically arranged on the both sides of the screw rod (12) with the side wall as the center axis, and the screw threads are oppositely arranged.

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