Lifting platform device for stage

Abstract

The utility model provides a lifting platform device for a stage, and relates to the field of stage mechanical equipment. The device comprises a mounting base and a table top, guide mechanisms and a flexible column jacking driving mechanism are arranged between the mounting base and the table top, the flexible column jacking driving mechanism is arranged between a pair of symmetrically arranged guide mechanisms, and the flexible column jacking driving mechanism drives the table top to do lifting motion; the flexible column jacking driving mechanism comprises a short connection column, a jacking chain set, a pin gear box, a double-shaft gear motor and a storage box, a protection mechanism is installed on the outer side of the table top, and a stroke limiting switch and a fire breaker are fixedly installed on the installation base. A flexible column jacking and lifting mode is adopted, the lifting platform has the advantages of being shallow in foundation pit, high in speed, large in stroke, heavy in load and high in transmission precision and structural stability, the highest working elevation of the platform face extends out of the stage by 2 m, and the platform face can serve as a front extension part of the stage. A guide mechanism is adopted for guiding, the stability of the lifting process is improved, and the lifting safety is improved through a stroke limiting switch.

Description

TECHNICAL FIELD

[0001] The utility model relates to stage mechanical equipment field, concretely is a stage lifting platform device. BACKGROUND

[0002] The lifting platform is one of the most widely used devices in stage mechanical platform under equipment, and its main function is to move the scenery and actors up and down when the scene is converted. It is suitable for cultural and recreational places such as auditoriums, cinemas, multi-functional halls, broadcasting studios, cultural and sports venues, and hotels. The traditional stage lifting platform adopts a hydraulic cylinder, which is lifted to a certain height, and only the hydraulic rod is used to maintain the height of the stage, and the stability needs to be improved. Moreover, the hydraulic cylinder is high, and the use is limited under the condition that the installation space of the stage lifting platform is limited. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a stage lifting platform device, which can effectively solve the above-mentioned deficiencies existing in the prior art and has the characteristics of shallow foundation pit, high speed, large stroke and heavy load.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The utility model provides a stage lifting platform device, which comprises a mounting base and a table top, a guide mechanism and a flexible column jacking drive mechanism are arranged between the mounting base and the table top, the flexible column jacking drive mechanism is arranged between a pair of symmetrically arranged guide mechanisms, and the flexible column jacking drive mechanism drives the table top to move up and down.

[0006] Further, the flexible column jacking drive mechanism comprises a short connecting column, a jacking chain set, a pin gear box, a double-shaft reduction motor and a storage box, the pin gear box, the double-shaft reduction motor and the storage box are fixed on the mounting base, the lower part of the jacking chain set is stored in the storage box, the upper part of the jacking chain set penetrates into the pin gear box and then penetrates out of the pin gear box along the vertical direction to connect the short connecting column, the upper end of the short connecting column is connected with the table top, a sprocket is arranged on a rotating shaft rotatably installed in the pin gear box, the sprocket is engaged with a pin shaft on the jacking chain set, the two output shafts of the double-shaft reduction motor are coaxially connected with the rotating shafts of the two symmetrically arranged pin gear boxes, and the reduction motor drives the sprocket to rotate, so that the upper part of the jacking chain set descends or rises along the vertical direction.

[0007] Further, the guide mechanism adopts a scissor lifting structure.

[0008] Further, the platform outer side installation protection mechanism comprises an outer side plate, an intermediate plate and an inner side plate, the upper end of the outer side plate is fixed to the outer side of the platform, the inner side of the outer side plate is provided with a first sliding rail, the outer side of the inner side plate is provided with a second sliding rail, the upper part of the outer side of the intermediate plate is provided with an upper sliding block matched with the first sliding rail, and the lower part of the inner side of the intermediate plate is provided with a lower sliding block matched with the second sliding rail.

[0009] Further, a pair of symmetrical stroke limiting switches fixed to the mounting base are further included, and a pair of impact rods corresponding to the stroke limiting switches are symmetrically arranged on the inner side of the lower sliding end of the guide mechanism.

[0010] Further, a spark breaker fixed to the mounting base is further included, and the double-shaft speed reduction motor is connected to an external power supply through the spark breaker.

[0011] The advantageous technical effects of the utility model are as follows:

[0012] The flexible column jacking drive mechanism of the stage lifting platform device is adopted to form a flexible column jacking lifting mode, has the characteristics of shallow foundation pit, high speed, large stroke and heavy load, has high transmission precision and high structural stability, the highest working elevation of the platform is 2m out of the stage, can be used as the front extension part of the stage, is guided by the guide mechanism, improves the stability of the lifting process, and improves the lifting safety through the stroke limiting switch. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front view of the stage lifting platform device of the utility model;

[0014] Figure 2 It is a left view of the stage lifting platform device of the utility model;

[0015] Figure 3 It is Figure 2 It is a local enlarged view of the middle A;

[0016] Figure 4 It is Figure 2 It is a local enlarged view of the middle B;

[0017] Figure 5 It is a plan view of the stage lifting platform device of the utility model without platform;

[0018] Figure 6 It is Figure 1 It is a structural schematic view of the flexible column jacking drive mechanism;

[0019] Reference numerals: 1-Mounting base, 2-Flexible column lifting drive mechanism, 201-Short connecting column, 202-Lifting chain assembly, 2021-Pin shaft, 203-Pin gear box, 2031-Sprocket, 204-Dual-shaft reduction motor, 205-Storage box, 3-Tabletop, 4-Guide mechanism, 401-Bumper rod, 5-Outer side plate, 501-First slide rail, 6-Intermediate plate, 601-Upper slider, 602-Lower slider, 7-Inner side plate, 701-Second slide rail, 8-Travel limit switch, 9-Flame cut-off device. Detailed Implementation

[0020] The technical solutions of this invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1-6 As shown, this utility model provides a stage lifting platform device, including a mounting base 1 and a platform 3. A guide mechanism 4 and a flexible column lifting drive mechanism 2 are provided between the mounting base 1 and the platform 3. The flexible column lifting drive mechanism 2 is located between a pair of symmetrically arranged guide mechanisms 4, and the flexible column lifting drive mechanism 2 drives the platform 3 to move up and down.

[0022] Specifically, the flexible column lifting drive mechanism 2 includes a shorting column 201, a lifting chain assembly 202, a pin gear box 203, a dual-shaft reduction motor 204, and a storage box 205. The pin gear box 203, the dual-shaft reduction motor 204, and the storage box 205 are all fixed on the mounting base 1. The lower part of the lifting chain assembly 202 is stored in the storage box 205, and the upper part of the lifting chain assembly 202 passes through the pin gear box 203 and then passes out of the pin gear box 203 in a vertical direction to connect to the shorting column. The upper end of column 201 is connected to platform 3. A sprocket 2031 is installed on the rotating shaft inside the pin gear box 203. The sprocket 2031 meshes with the pin shaft 2021 on the lifting chain assembly 202. The two output shafts of the dual-shaft reduction motor 204 are coaxially connected to the rotating shafts of the two symmetrically arranged pin gear boxes 203. The reduction motor drives the sprocket 2031 to rotate, thereby causing the upper part of the lifting chain assembly 202 to descend or rise in the vertical direction.

[0023] Specifically, the outer side of the table 3 is provided with a protection mechanism, which comprises an outer side plate 5, an intermediate plate 6 and an inner side plate 7. The upper end of the outer side plate 5 is fixed to the outer side of the table 3, the inner side of the outer side plate 5 is provided with a first sliding rail 501, the outer side of the inner side plate 7 is provided with a second sliding rail 701, the upper part of the outer side of the intermediate plate 6 is provided with an upper sliding block 601 matched with the first sliding rail 501, and the lower part of the inner side of the intermediate plate 6 is provided with a lower sliding block 602 matched with the second sliding rail 701. The protection mechanism protects the flexible column jacking drive mechanism 2 and improves the appearance of the device.

[0024] Specifically, in order to improve the safety of the lifting process, a pair of symmetrical travel limit switches 8 are further fixed to the mounting base 1, and a pair of impact rods 401 corresponding to the travel limit switches 8 are symmetrically arranged on the inner side of the lower sliding end of the guide mechanism 4.

[0025] Specifically, in order to improve the electrical safety, a spark arrester 9 is further fixed to the mounting base 1, and the double-shaft reduction motor 204 is connected to the external power supply through the spark arrester 9.

[0026] Specifically, the guide mechanism 4 adopts a scissor lifting structure.

[0027] In the stage lifting platform device, the double-shaft reduction motor 204 drives the rotating shaft in the pinion gear box 203 to rotate, so that the sprocket 2031 on the rotating shaft drives the pin shaft 2021 on the jacking chain set 202, and the jacking chain set 202 is lifted or lowered. During lifting, the guide mechanism 4 is guided to improve the stability of the lifting process.

[0028] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement within the technical scheme and concept of the present application shall be included in the protection scope of the present application.

Claims

1. A stage riser apparatus, characterized by: The flexible column jacking drive mechanism is arranged between the pair of symmetrically arranged guide mechanisms, and drives the table top to perform lifting movement. The flexible column jacking drive mechanism comprises a short connecting column, a jacking chain set, a pin gear box, a double-shaft reduction motor and a storage box.

2. A stage lift apparatus as claimed in claim 1, wherein: The guide mechanism adopts a scissor lifting structure.

3. A stage lift apparatus as claimed in claim 1, wherein: The table top outer side is provided with a protection mechanism, which comprises an outer side plate, an intermediate plate and an inner side plate.

4. A stage lift apparatus as claimed in claim 2, wherein: A pair of stroke limiting switches are fixed to the mounting base, and a pair of impact rods corresponding to the stroke limiting switches are symmetrically arranged on the inner side of the lower sliding end of the guide mechanism.

5. A stage lift apparatus as claimed in claim 2, wherein: A fire interrupter is also fixed to the mounting base, and the double-shaft reduction motor is connected to an external power source through the fire interrupter.

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