CN2219930Y

CN2219930Y - Automatic folding grandstand

Info

Publication number: CN2219930Y
Application number: CN 95213219
Authority: CN
Inventors: 丰国勋
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-29
Filing date: 1995-05-29
Publication date: 1996-02-14
Anticipated expiration: 2005-05-29

Abstract

The utility model relates to an automatic folding grandstand which comprises chairs and a grandstand driving mechanism which is composed of motors, wherein a platform is fixed on the upper part of a framework, and a bracket is fixed on a foot rest which is provided with casters. The bracket, the platform and the foot rest on the same height form a grandstand unit, and foot rests in adjacent grandstand units are transversely stuck. The chairs are installed on each platform through supporting seats, hydraulic cylinders are installed below the chairs, which is convenient to drive the chairs to turn, and all the hydraulic cylinders are connected with oil pumps through oil pipes. The utility model has the characteristics of firm structure, simplicity, flexible action, portability and convenient maintenance, and a failure phenomenon and an off tracking phenomenon can not occur.

Description

The auto-folder grandstand

A kind of auto-folder grandstand relates to the physical culture grandstand.

Physical culture generally is fixed form with grandstand.Chinese patent application the 86210674.5th discloses a kind of " telescopic action grandstand ".Becoming ladder after this grandstand stretches, is the box duplexer during contraction.Bottom is equipped with castor, and the time spent does not push in the storehouse and deposits, and the utilization rate in formula hall, level land is increased.The telescoping mechanism that seat-box, seat, supporting leg and balladeur train, pull bar are formed is the major part of this grandstand.Motor, electromagnet, driving telescoping mechanism are realized automatic control.But this stand seat adopts pull bar, folding ear and stroke to reconcile nut to be formed.Therefore one side seat drives structure complexity occurs operating malfunctioning easily; The turning pair that is provided by drive unit can only be provided in the upset of seat on the other hand, and drive unit load limit is overweight, phenomenons such as being prone to sideslip, can not pull or pushing away to advance.The transmission that the supporting leg of while seat also will lean on sliding rope, pulley, front and back directive wheel.If the supporting leg action is not in place, though then miscellaneous part has arrived extreme position, but still to be subjected to the driving of driving mechanism, therefore damage easily.

The purpose of this utility model provides a kind of improved auto-folder grandstand, and it separately carries out the grandstand expanding-contracting action with turnover seat action, can avoid misoperation effectively or move the damage of malfunctioning and each parts.

According to above-mentioned purpose, the utility model is taked such technical scheme: this auto-folder grandstand, the grandstand driving mechanism that includes seat and form by motor, it is characterized in that platform is fixed on the top of framework, framework is made up of crossbeam, support, foot rest, support is fixed on the described foot rest that has castor, crossbeam is fixed on the top of two stands, the fixing formation of the support of sustained height and platform, crossbeam and described foot rest one grandstand unit, support height difference in the different grandstands unit, and the foot rest in the adjacent grandstand unit laterally pastes mutually; Seat is installed on the platform by bearing, and the below of seat is equipped with hydraulic cylinder to order about turnover seat, and all hydraulic cylinder links to each other with oil pump by oil pipe.

The utility model is because the employing hydraulic means drives turnover seat, and employing stent foot shelf structure.Therefore structure is firm, simple, can not occur operating malfunctioning, sideslip and the damage of components that causes therefrom.Have be active in one's movements, light, maintaining characteristics easily.

The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the overall structure schematic diagram according to the auto-folder grandstand that the utility model proposes.

The auto-folder grandstand frame construction schematic diagram that Fig. 2 the utility model proposes for basis.

Fig. 3 is the seat driving mechanism schematic diagram according to the auto-folder grandstand that the utility model proposes.

Fig. 4 is the anti-inclined to one side structural scheme of mechanism according to the auto-folder grandstand that the utility model proposes.

Below in conjunction with details and the working condition of accompanying drawing detailed description according to the concrete device that the utility model proposes.

As shown in Figures 1 and 2, the integral body of grandstand becomes stairstepping, and row's seat (1) is installed on each layer ladder.Minimum one deck ladder is first row, and last one deck ladder position is up to last row.The drive unit of being made up of motor (7) is installed in the bottom of lowermost layer ladder.For athletic ground and grandstand are separated, also be provided with railing (6) at minimum one deck.Platform (3) is fixed on the top of framework, and seat is installed on the platform by bearing (4).Framework is made up of crossbeam (10), support (2), foot rest (9).Its medium-height trestle is fixed on the described foot rest (9) that has castor (8), and crossbeam is fixed on the top of two stands.Each grandstand unit is by the support and the fixing formation of platform, crossbeam and described foot rest of sustained height.The height of same grandstand unit medium-height trestle is all identical, behind the installation seat, forms the arrange seats on the grandstand on the platform.And the height difference of different grandstands unit medium-height trestle, thereby make the setting height(from bottom) of platform also different, constitute stepped grandstand.

Foot rest (9) in the adjacent grandstand unit laterally pastes mutually, thereby makes whole grandstand keep structural stable.Slide rail (12) is installed on foot rest, and the end of slide rail is fixed with fixture block (16), and this fixture block embeds in the adjacent grandstand unit in the slide rail in order to avoid adjacent grandstand unit and pulls out in the process dislocation each other or disconnect.When driving mechanism drives the lowermost layer reach, can make each grandstand unit be connected with each other, and successively whole grandstand be pulled out.Otherwise then every layer of grandstand successively can be pushed and fold.The resistance that causes in order to reduce foot rest to paste mutually increases, and can load onto pulley between foot rest pasting mutually, thereby make operation more steady.

Top of the trellis in each grandstand unit can be loaded onto pulley (11), and the same platform of this pulley (3) bottom surface offsets, thereby makes platform structure more firm.If load onto slide rail (12) in the platform bottom surface pulley (11) is moved in this slide rail, grandstand is shunk or more steady when pulling out.And pulley can be installed by vertical, thereby same contact with platform; Also can laterally install, thereby contact with the slide rail two side.One vertical pulley perhaps promptly is installed, a horizontal pulley is installed again.

Seat adopts simple supporting leg seat, and this backrest is fixed on the supporting leg, and seat is hinged on the chair back and can rotates to vertical range in level.Referring to Fig. 3, bearing (4) is fixed on the platform (3) again, and the supporting leg of seat (5) then is hinged on the bearing (4), so seat can carry out rotary movement.The end of seat leg (20) turns forward, and is hinged with first link rod (21) in its end.The other end hinge of first link rod is by on second link rod (22) that same bearing (4) is hinged.The hydraulic cylinder piston end also is hinged on first link rod, so hydraulic cylinder piston (19) just can make when moving forward and backward that seat carries out rotary movement.Hydraulic cylinder (18) then is fixed on the support (2).Each hydraulic cylinder all links to each other with oil pump by oil pipe.

Oil pump electrical machinery all is subjected to the control of travel switch with drive motors.This trip switch is installed in the foot rest two ends of maximum layer grandstand unit.After grandstand was successively pulled out, the travel switch on last one deck grandstand was touched the drive motors stall, and Oil pump electrical machinery starts, and seat is dug by row successively, hydraulic electric motor stall then.When grandstand bounced back, oil pump was at first drained the oil, and seat is overturning successively.Successively bounce back then.When last row's grandstand was pushed into, another travel switch was touched, the drive motors stall.

In telescopic process, grandstand is influenced by the place inequality often, may cause the stressed irregular and sideslip direction in the left and right sides, grandstand unit.One device synchronously can be installed for this reason, and referring to Fig. 2 and Fig. 4, the synchronizing bar (13) that two ends are fixed with sprocket wheel (14) is contained in the end of the left and right sides, grandstand unit foot rest.In addition two sprocket wheels (14) are installed in the other end of the left and right sides, same grandstand unit foot rest (9) respectively, and are connected with sprocket wheel on the synchronizing bar by chain (15).Two fixed teeth (17) then are fixed on the left and right sides foot rest of adjacent grandstand unit, and fixed teeth is meshed with chain.When the A point during arrow direction, drives chain and sprocket wheel synchronizing bar and also resembles the direction as shown motion, thereby make another fixed teeth move in the same way, therefore guaranteed being synchronized with the movement of adjacent grandstand unit in figure.Sychronisation in each grandstand unit has then guaranteed being synchronized with the movement of adjacent each layer.

Claims

1. auto-folder grandstand, the grandstand driving mechanism that includes seat and form by motor, it is characterized in that platform is fixed on the top of framework, framework is made up of crossbeam, support, foot rest, support is fixed on the described foot rest that has castor, and crossbeam is fixed on the top of two stands, the fixing formation of the support of sustained height and platform and described foot rest one grandstand unit, support height difference in the different grandstands unit, and the foot rest in the adjacent grandstand unit laterally pastes mutually; Seat is installed on the platform by bearing, and the below of seat is equipped with hydraulic cylinder to drive turnover seat, and all hydraulic cylinder all links to each other with oil pump by oil pipe.

2. auto-folder grandstand according to claim 1 is characterized in that being equipped with slide rail on foot rest, and the end of slide rail is fixed with fixture block, and described fixture block embeds in the adjacent grandstand unit in the slide rail on the foot rest.

3. auto-folder grandstand according to claim 1 is equipped with pulley between the foot rest that it is characterized in that laterally pasting mutually.

4. auto-folder grandstand according to claim 1 is characterized in that a top of the trellis is equipped with pulley.

5. auto-folder grandstand according to claim 1, it is characterized in that synchronizing bar that two ends are fixed with sprocket wheel is contained in the end of the left and right sides, grandstand unit foot rest, in addition two sprocket wheels are installed in the other end of same framework left and right sides foot rest respectively, and are connected with sprocket wheel on the synchronizing bar by chain; Two fixed teeth then are fixed on the left and right sides foot rest of adjacent grandstand unit, and nibble platform mutually with chain.