CN110037464A - Playground open-air grandstand seat extension/retraction device - Google Patents

Playground open-air grandstand seat extension/retraction device Download PDF

Info

Publication number
CN110037464A
CN110037464A CN201910290058.7A CN201910290058A CN110037464A CN 110037464 A CN110037464 A CN 110037464A CN 201910290058 A CN201910290058 A CN 201910290058A CN 110037464 A CN110037464 A CN 110037464A
Authority
CN
China
Prior art keywords
grandstand
seat board
groove
several
retraction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201910290058.7A
Other languages
Chinese (zh)
Inventor
孙慧霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huanghe Science and Technology College
Original Assignee
Huanghe Science and Technology College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huanghe Science and Technology College filed Critical Huanghe Science and Technology College
Priority to CN201910290058.7A priority Critical patent/CN110037464A/en
Publication of CN110037464A publication Critical patent/CN110037464A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/12Theatre, auditorium, or similar chairs
    • A47C1/126Theatre, auditorium, or similar chairs stowable in floor or wall
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/002Chair or stool bases
    • A47C7/006Chair or stool bases with castors
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/14Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • A47C7/144Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions with array of movable supports
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H3/00Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries, prisons
    • E04H3/10Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries, prisons for meetings, entertainments, or sports
    • E04H3/12Tribunes, grandstands or terraces for spectators or amphitheatres
    • E04H3/123Telescopic grandstands

Abstract

Playground open-air grandstand seat extension/retraction device, including grandstand, the ladder side of grandstand opens up the placing groove of several rectangular configurations, bottom surface of the placing groove each parallel to grandstand, several seat boards parallel with it are respectively equipped in placing groove, pass through a stock connection between seat board in each placing groove, stock is connected between corresponding seat board by dismountable connector respectively, the inside of placing groove opens up several strip grooves respectively, rack gear is installed in activity respectively in strip groove, and the outer end of rack gear is fixedly connected with corresponding stock.The present invention is suitable for open-air grandstand, the area that dust storm is heavier and rainfall is more is particularly suitable for use, it can be realized the folding and unfolding of whole seat boards by motor, seat board stretches out so that student sits down, it can prevent extraneous dust and rainwater from dropping down on seat board when in seat board retraction placing groove, when seat board stretches out again, student is without wiping seat board, the use that paper can be reduced is conducive to save wooden resource.

Description

Playground open-air grandstand seat extension/retraction device
Technical field
The invention belongs to grandstand field, specifically a kind of playground open-air grandstand seat extension/retraction device.
Background technique
Grandstand is supplied to spectators' viewing when generally referring to for the large-scale collective activity such as style movement, entertainment Seat is primarily referred to as being centered around the auditorium of performance or competition area surrounding.Grandstand in school beside stadium is mostly outdoor The step structure of formula, when large-scale activity is carried out in stadium, students are directly sitting in the plane of ladder-like grandstand, but due to Dust can be accumulated on grandstand, students would generally clean grandstand using paper when taking a seat, will cause the use of a large amount of paper, and Paper after use may be dropped, and be unfavorable for keeping the clean and tidy of grandstand environment.
Summary of the invention
The present invention provides a kind of playground open-air grandstand seat extension/retraction device, to solve defect in the prior art.
The present invention is achieved by the following technical programs:
Playground open-air grandstand seat extension/retraction device, including grandstand, the ladder side of grandstand open up the placement of several rectangular configurations Slot, placing groove are respectively equipped with several seat boards parallel with it in placing groove each parallel to the bottom surface of grandstand, in each placing groove By a stock connection between seat board, stock is connected by dismountable connector between corresponding seat board respectively, is placed The inside of slot opens up several strip grooves respectively, activity installation rack gear respectively in strip groove, the outer end of rack gear with corresponding stock It is fixedly connected, opens up several axis holes before grandstand respectively, axis hole and placing groove correspond, and the inner wall of axis hole opens up number respectively A race, race are communicated with inside corresponding strip groove respectively, install shaft by bearing respectively in axis hole, and the front end of shaft is equal Outside corresponding axis hole, several gears are fixedly mounted in the periphery of shaft respectively, and gear is respectively positioned in corresponding race, and gear It is engaged respectively with corresponding rack gear, passes through the rear end that bearing connects several sleeves, sleeve and placing groove one before grandstand respectively One is corresponding, and the centerline collineation of sleeve and axis hole, the front end of shaft are passed through out of sleeve, and the front end of sleeve is fixedly mounted respectively Sprocket wheel opens up several card slots before sleeve respectively, and card slot is communicated with corresponding sleeve inner, and the front end of shaft is set with Several fixture blocks are fixedly mounted in annulus, the periphery of annulus respectively, and annulus is located in corresponding sleeve and can slide back and forth along it, Fixture block is located in corresponding card slot, and locating part is respectively equipped in front of annulus, is connected between sprocket wheel by chain, wherein one The front end of a shaft is fixedly connected with the output end of power device.
Playground as described above open-air grandstand seat extension/retraction device, the locating part are swivel nut, the periphery of shaft Front end opens up external screw thread respectively, and the front end difference screw thread of shaft installs swivel nut, and the rear end of swivel nut is respectively fixedly connected with several l-shaped rods Longitudinal rod one end, the inner wall of annulus opens up first annular slot respectively, opens up the second annular groove respectively before first annular slot, The diameter of second annular groove is less than the diameter of first annular slot, and the longitudinal rod of l-shaped rod is worn out of corresponding second annular groove respectively Cross, the vertical bar of l-shaped rod is respectively positioned in corresponding first annular slot, the vertical bar periphery of l-shaped rod with it is corresponding first annular The inner wall of slot is engaged.
Playground as described above open-air grandstand seat extension/retraction device, the periphery of the swivel nut are regular hexagon knot Structure.
Playground open-air grandstand seat extension/retraction device as described above, the connector are bolt, before seat board Open up bar shaped through groove respectively, stock is passed through out of corresponding bar shaped through groove respectively, and the top surface of stock opens up several screw holes, screw hole with Seat board corresponds, and screw hole is communicated with inside corresponding bar shaped through groove respectively, and the top surface of seat board opens up through-hole, through-hole difference respectively It is communicated with inside corresponding bar shaped through groove, through-hole with the centerline collineation of corresponding screw hole, is each passed through one in through-hole respectively Bolt, the lower end of bolt are located in corresponding screw hole and are threadedly engaged therewith.
Playground as described above open-air grandstand seat extension/retraction device, the top surface of the seat board open up blind hole respectively, With the centerline collineation of corresponding through-hole, bolt is located in blind hole blind hole.
Playground as described above open-air grandstand seat extension/retraction device, the bolt are butterfly bolt.
Playground as described above open-air grandstand seat extension/retraction device, the bottom surface of the seat board uniformly passes through wheel carrier Idler wheel is installed.
Playground as described above open-air grandstand seat extension/retraction device, the bottom surface of the seat board uniformly opens up several Groove, idler wheel pass through wheel carrier and are installed in corresponding groove.
Playground as described above open-air grandstand seat extension/retraction device, the side of facing directly of the grandstand opens up several storages Room is separated by load bearing wall between two adjacent storerooms, and strip groove and race are respectively positioned in corresponding load bearing wall.
The invention has the advantages that the present invention is suitable for open-air grandstand, it is heavier more with rainfall to be particularly suitable for dust storm Area uses, and can be realized the folding and unfolding of whole seat boards by motor, and seat board stretches out so that student sits down, seat board retraction placing groove It can prevent extraneous dust and rainwater from dropping down on seat board when interior, when seat board stretches out again, student is not necessarily to wipe seat board, The use that paper can be reduced is conducive to save wooden resource, and is conducive to keep the environment at grandstand clean and tidy, moves meeting or big After type joint performance activity end, make in seat board retraction placing groove.When all sprocket wheels rotate synchronously, fixture block is respectively positioned on corresponding In card slot, sprocket wheel drives all shafts to rotate synchronously, and turns shaft driven gear and synchronizes rotation, since wheel and rack is nibbled It closes, so that rack gear is moved horizontally along strip groove, stock is fixedly connected with rack gear, and seat board and stock are under the action of connector Synchronizing moving, therefore, seat board are moved horizontally with rack gear, and when rack gear is moved to outside grandstand, seat board is moved to outside placing groove, work as tooth When item is moved into grandstand, seat board is moved into placing groove.In actual use, the occupancy row of grandstand can be determined according to attendance figure Number, people adjust the locating part in shaft corresponding to the row that do not come into operation, and drive annulus mobile by locating part, until circle Ring is detached from out of sleeve, i.e., fixture block is detached from out of card slot, at this point, sprocket wheel is unable to drive corresponding shaft rotation, to reduce load, So as to reduce motor operating power consumption.Serial number is carved in the top surface of seat board, so that student is corresponded to serial number and takes a seat, can reduce because of seat And the dispute generated, and teacher can determine whether student attends activity according to the service condition of seat board, be conducive to teacher's control The rate of attendance of collective activity can it is not necessary that by way of roll-call, teacher can determine list of not turning out for work within the shorter time Improve the working efficiency of teacher.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.
Fig. 1 is structural schematic diagram of the invention;Fig. 2 is I partial enlarged view of Fig. 1;Fig. 3 is II partial enlarged view of Fig. 1; Fig. 4 is III partial enlarged view of Fig. 1;Fig. 5 is the enlarged drawing of the A direction view of Fig. 1;Fig. 6 is the enlarged drawing of the B direction view of Fig. 4;Figure 7 be the enlarged drawing of the C direction view of Fig. 4;Fig. 8 is the structural schematic diagram of grandstand.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Playground open-air grandstand seat extension/retraction device, as shown, including grandstand 1, grandstand 1 is that outdoor staged is seen Platform, the ladder side of grandstand 1 open up the placing groove 2 of several rectangular configurations, bottom surface of the placing groove 2 each parallel to grandstand 1, placing groove 2 Bottom surface it is concordant with the horizontal plane of corresponding 1 ladder side of grandstand, several seat boards 3 parallel with it are respectively equipped in placing groove 2, Seat board 3 can be fully located in placing groove 2, and the width of seat board 3 is less than the width of the ladder side horizontal plane of grandstand 1, Mei Gefang Set and connected between the seat board 3 in slot 2 by stock 4, stock 4 runs through out of corresponding seat board 3 respectively, stock 4 respectively with It is connected between corresponding seat board 3 by dismountable connector, connector enables seat board 3 to move synchronously with stock 4, places The inside of slot 2 opens up several strip grooves 5, bottom surface of the strip groove 5 each parallel to grandstand 1, the interior activity installation respectively of strip groove 5 respectively Rack gear 6, the outer end of rack gear 6 are fixedly connected with corresponding stock 4, and rack gear 6 can be slided along corresponding 5 level of strip groove respectively, Several axis holes 7 are opened up before grandstand 1 respectively, axis hole 7 is each perpendicular to before grandstand 1, and axis hole 7 and placing groove 2 correspond, The inner wall of axis hole 7 opens up several races 8 respectively, and race 8 communicates with inside corresponding strip groove 5 respectively, passes through respectively in axis hole 7 Bearing installs shaft 9, and the front end of shaft 9 is respectively positioned on outside corresponding axis hole 7, and several gears are fixedly mounted in the periphery of shaft 9 respectively 10, with the centerline collineation of corresponding axis hole 7, gear 10 is respectively positioned in corresponding race 8 for race 8, shaft 9, gear 10, and Gear 10 is engaged with corresponding rack gear 6 respectively, passes through the rear end that bearing connects several sleeves 11, sleeve respectively before grandstand 1 11 correspond with placing groove 2, and the centerline collineation of sleeve 11 and axis hole 7, the front end of shaft 9 are passed through out of sleeve 11, set Sprocket wheel 12 is fixedly mounted in the front end of cylinder 11 respectively, and the inner ring of sprocket wheel 12 is fixedly connected with the periphery of sleeve 11, before sleeve 11 Several card slots 13 are opened up respectively, card slot 13 is communicated with inside corresponding sleeve 11, and the front end of shaft 9 is set with annulus 14, The inner circumferential of annulus 14 and the periphery of shaft 9 are engaged, and several fixture blocks 15 are fixedly mounted in the periphery of annulus 14 respectively, and annulus 14 divides Wei Yu not can slide back and forth in corresponding sleeve 11 and along it, fixture block 15 is located in corresponding card slot 13, fixture block 15 it is outer Week is engaged with the inner wall of corresponding card slot 13 respectively, and the front of annulus 14 is respectively equipped with locating part, and locating part can be distinguished It adjusts the position of corresponding annulus 14 and fixation, is connected between sprocket wheel 12 by chain 16, the front end of one of shaft 9 and dynamic The output end of power device is fixedly connected, and power device is the motor with electromagnetic braking, and motor is connect with power circuit, motor power-off Afterwards, the axis of motor is lockked in electromagnetic braking by mechanical device, i.e. shaft 9 can not be rotated, be moved when in use to prevent stopping seat plate 3, This is the prior art, and this will not be repeated here.The present invention is suitable for open-air grandstand, and it is heavier more with rainfall to be particularly suitable for dust storm Area use, can be realized the folding and unfolding of whole seat boards 3 by motor, seat board 3 stretches out 3 retraction of seat board so that student sits down It can prevent extraneous dust and rainwater from dropping down on seat board 3 when in placing groove 2, when seat board 3 stretches out again, student is not necessarily to seat board 3 are wiped, and the use of paper can be reduced, and are conducive to save wooden resource, and are conducive to keep the environment at grandstand 1 whole It is clean, after moving meeting or large-scale joint performance activity end, make in 3 retraction placing groove 2 of seat board.All sprocket wheels 12 rotate synchronously When, fixture block 15 is respectively positioned in corresponding card slot 13, and sprocket wheel 12 drives all shafts 9 to rotate synchronously, shaft 9 with moving gear 10 with Synchronous rotation, since gear 10 is engaged with rack gear 6 so that rack gear 6 is moved horizontally along strip groove 5, stock 4 and rack gear 6 It is fixedly connected, seat board 3 and synchronizing moving under the action of connector of stock 4, therefore, seat board 3 is moved horizontally with rack gear 6, works as tooth When item 6 is moved to outside grandstand 1, seat board 3 is moved to outside placing groove 2, and when rack gear 6 is moved into grandstand 1, seat board 3 is to placing groove 2 Interior movement.In actual use, the occupancy number of rows of grandstand 1 can be determined according to attendance figure, people adjust the row institute that do not come into operation Locating part in corresponding shaft 9 drives annulus 14 mobile, until annulus 14 is detached from out of sleeve 11, that is, blocks by locating part Block 15 is detached from out of card slot 13, is rotated at this point, sprocket wheel 12 is unable to drive corresponding shaft 9, to reduce load, so as to reduce Motor operating power consumption.Serial number is carved in the top surface of seat board 3, so that student is corresponded to serial number and takes a seat, and can reduce entangling of generating by seat Confusingly, and teacher can determine whether student attends activity according to the service condition of seat board 3, be conducive to teacher's control collective activity The rate of attendance can be improved teacher's it is not necessary that by way of roll-call, teacher can determine list of not turning out for work within the shorter time Working efficiency.
Specifically, the periphery front end of shaft 9 is opened respectively as shown in fig. 7, locating part described in the present embodiment is swivel nut 17 If external screw thread, the front end difference screw thread of shaft 9 installs swivel nut 17, and the rear end of swivel nut 17 is respectively fixedly connected with several l-shaped rods 18 Longitudinal rod one end, the inner wall of annulus 14 open up first annular slot 19 respectively, open up the second ring respectively before first annular slot 19 Shape slot 20, the diameter of the second annular groove 20 are less than the diameter of first annular slot 19, and the longitudinal rod of l-shaped rod 18 is respectively from corresponding the It is passed through in second ring slot 20, the vertical bar of l-shaped rod 18 is respectively positioned in corresponding first annular slot 19, outside the vertical bar of l-shaped rod 18 The inner wall of the corresponding first annular slot 19 of Zhou Junyu is engaged.User is by the manual rotary threaded sleeve 17 of tool, due to swivel nut 17 It is threadedly engaged with shaft 9, when swivel nut 17 rotates, there is length travel simultaneously, move forward swivel nut 17, in l-shaped rod 18 Under the action of, swivel nut 17 drives annulus 14 to move forward, and after fixture block 15 is removed out of card slot 13, sprocket wheel 12 is unable to drive shaft 9 rotations.The structure can simply and effectively realize the fixation of 14 position of annulus, be not easy to loosen, and the mode manually adjusted can drop The complexity of low structure, to reduce the manufacturing cost of the present apparatus.
Specifically, as shown in Fig. 4 or 6 or 7, the periphery of swivel nut 17 described in the present embodiment is positive hexagonal structure.The knot Structure make people by conventional tool can very easily rotary threaded sleeve 17 such as spanner can reduce difficulty when swivel nut 17 is adjusted Degree.
Further, as shown in figure 3, connector described in the present embodiment is bolt 24, item is opened up respectively before seat board 3 Shape through groove 21, stock 4 are passed through out of corresponding bar shaped through groove 21 respectively, and the top surface of stock 4 opens up several screw holes 22, screw hole 22 with Seat board 3 corresponds, and screw hole 22 is communicated with inside corresponding bar shaped through groove 21 respectively, and the top surface of seat board 3 opens up through-hole 23 respectively, Through-hole 23 is communicated with inside corresponding bar shaped through groove 21 respectively, and through-hole 23 with the centerline collineation of corresponding screw hole 22, leads to respectively A bolt 24 is each passed through in hole 23, the lower end of bolt 24 is located in corresponding screw hole 22 and is threadedly engaged therewith.It is logical Cross the mutual cooperation of bolt 24, screw hole 22, seat board 3 and stock 4 can be connected, thus make seat board 3 with stock 4 movement and Movement, when people looser a bolt 24 until when bolt 24 is detached from screw hole 22, stock 4 can be relative to the horizontal shifting of bar shaped through groove 21 Dynamic, what people can adjust seat board 3 at this time leans out position, and if certain student midway is left the theatre, the student that leaves the theatre can be by its corresponding seat board 3 It pushes back in placing groove 2, in order to avoid seat board 3 is dirty during leaving the theatre, there is higher flexibility in actual use, which makes this dress The ability adjusted with monomer is set, demand in actual use is more met.
Further, as shown in figure 3, the top surface of seat board 3 described in the present embodiment opens up blind hole 25 respectively, blind hole 25 is equal With the centerline collineation of corresponding through-hole 23, bolt 24 is located in blind hole 25.The structure submerges bolt 24 in seat board 3, energy Enough prevent bolt 24 from impacting to the user being seated.
Further, as shown in figure 3, bolt 24 described in the present embodiment is butterfly bolt.The structure make user without Bolt 24 need to can be tightened by tool, students directly use hand rotating bolt 24, more meet actual demand, can drop Limitation when the low present apparatus uses.
Further, as shown in Fig. 2, the bottom surface of seat board 3 described in the present embodiment, which uniformly passes through wheel carrier, installs idler wheel 26.The periphery of idler wheel 26 with the horizontal face contact in ladder side of grandstand 1, to play a supportive role to seat board 3, so as not to seat board 3 with Horizontal face contact can greatly reduce the frictional force when movement of seat board 3, be conducive to enhance the fluency when movement of seat board 3, and have Conducive to kinetic energy loss is reduced, that is, reduce energy loss.
Further, as shown in Fig. 2, the bottom surface of seat board 3 described in the present embodiment uniformly opens up several grooves 27, rolling Wheel 26 is installed in corresponding groove 27 by wheel carrier.Idler wheel 26 is predominantly located in groove 27, so as to reduce rolling The occupied space of wheel 26.
Further, adjacent as shown in figure 8, the side of facing directly of grandstand 1 described in the present embodiment opens up several storerooms 28 Two storerooms 28 between separated by load bearing wall, strip groove 5 and race 8 are respectively positioned in corresponding load bearing wall.The structure energy Enough that sports goods is placed in storeroom 28, pick-and-place sports goods is more convenient, wherein one side and the storage of strip groove 5 and race 8 Hiding communicates inside room 28, in order to which people safeguard rack gear 6, gear 10.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features; And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (9)

1. playground open-air grandstand seat extension/retraction device, it is characterised in that: including grandstand (1), the ladder side of grandstand (1) is opened up The placing groove (2) of several rectangular configurations, for placing groove (2) each parallel to the bottom surface of grandstand (1), placing groove (2) is interior to be respectively equipped with number A seat board (3) parallel with it passes through stock (4) connection, stock (4) point between seat board (3) in each placing groove (2) It is not connected between corresponding seat board (3) by dismountable connector, the inside of placing groove (2) opens up several strip grooves respectively (5), activity installation rack gear (6) respectively in strip groove (5), the outer end of rack gear (6) is fixedly connected with corresponding stock (4), sees It is opened up respectively before platform (1) several axis holes (7), axis hole (7) and placing groove (2) correspond, and the inner wall of axis hole (7) is opened respectively If several races (8), race (8) is communicated with corresponding strip groove (5) inside respectively, is passed through bearing in axis hole (7) respectively and is installed Shaft (9), the front end of shaft (9) are respectively positioned on corresponding axis hole (7) outside, and several gears are fixedly mounted in the periphery of shaft (9) respectively (10), gear (10) is respectively positioned in corresponding race (8), and gear (10) is engaged with corresponding rack gear (6) respectively, grandstand (1) Before pass through the rear end that bearing connects several sleeves (11) respectively, sleeve (11) and placing groove (2) correspond, and sleeve (11) it is passed through out of sleeve (11) with the centerline collineation of axis hole (7), the front end of shaft (9), the front end of sleeve (11) is solid respectively Dingan County fills sprocket wheel (12), opens up respectively several card slots (13) before sleeve (11), card slot (13) with corresponding sleeve (11) Inside communicates, and the front end of shaft (9) is set with annulus (14), and several fixture blocks are fixedly mounted in the periphery of annulus (14) respectively (15), annulus (14) is located in corresponding sleeve (11) and can slide back and forth along it, and fixture block (15) is located at corresponding In card slot (13), it is respectively equipped with locating part in front of annulus (14), is connected between sprocket wheel (12) by chain (16), one of them The front end of shaft (9) is fixedly connected with the output end of power device.
2. playground open-air grandstand seat extension/retraction device according to claim 1, it is characterised in that: the locating part For swivel nut (17), the periphery front end of shaft (9) opens up external screw thread respectively, and the front end difference screw thread of shaft (9) installs swivel nut (17), The rear end of swivel nut (17) is respectively fixedly connected with longitudinal rod one end of several l-shaped rods (18), and the inner wall of annulus (14) opens up respectively One annular groove (19) opens up the second annular groove (20) before first annular slot (19), the diameter of the second annular groove (20) respectively Less than the diameter of first annular slot (19), the longitudinal rod of l-shaped rod (18) is passed through out of corresponding second annular groove (20) respectively, L The vertical bar of type bar (18) is respectively positioned in corresponding first annular slot (19), the vertical bar periphery of l-shaped rod (18) with it is corresponding The inner wall of first annular slot (19) is engaged.
3. playground open-air grandstand seat extension/retraction device according to claim 2, it is characterised in that: the swivel nut (17) periphery is positive hexagonal structure.
4. playground open-air grandstand seat extension/retraction device according to claim 1 or 2 or 3, it is characterised in that: described Connector is bolt (24), is opened up respectively bar shaped through groove (21) before seat board (3), stock (4) is saturating from corresponding bar shaped respectively It is passed through in slot (21), the top surface of stock (4) opens up several screw holes (22), and screw hole (22) and seat board (3) correspond, screw hole (22) Respectively with communicated inside corresponding bar shaped through groove (21), the top surface of seat board (3) opens up through-hole (23) respectively, through-hole (23) respectively with Is communicated inside corresponding bar shaped through groove (21), through-hole (23) respectively with the centerline collineation of corresponding screw hole (22), through-hole (23) It is inside each passed through a bolt (24), the lower end of bolt (24) is located in corresponding screw hole (22) and is threadedly engaged therewith.
5. playground open-air grandstand seat extension/retraction device according to claim 4, it is characterised in that: the seat board (3) top surface opens up blind hole (25) respectively, and with the centerline collineation of corresponding through-hole (23), bolt (24) is located at blind hole (25) In blind hole (25).
6. playground open-air grandstand seat extension/retraction device according to claim 4, it is characterised in that: the bolt It (24) is butterfly bolt.
7. playground open-air grandstand seat extension/retraction device described according to claim 1 or 2 or 3 or 5 or 6, it is characterised in that: Idler wheel (26) are uniformly installed by wheel carrier in the bottom surface of the seat board (3).
8. playground open-air grandstand seat extension/retraction device according to claim 7, it is characterised in that: the seat board (3) bottom surface uniformly opens up several grooves (27), and idler wheel (26) is installed in corresponding groove (27) by wheel carrier.
9. playground open-air grandstand seat extension/retraction device, feature described according to claim 1 or 2 or 3 or 5 or 6 or 7 exist In: the side of facing directly of the grandstand (1) opens up several storerooms (28), passes through load bearing wall between two adjacent storerooms (28) It separates, strip groove (5) and race (8) are respectively positioned in corresponding load bearing wall.
CN201910290058.7A 2019-04-11 2019-04-11 Playground open-air grandstand seat extension/retraction device Withdrawn CN110037464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910290058.7A CN110037464A (en) 2019-04-11 2019-04-11 Playground open-air grandstand seat extension/retraction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910290058.7A CN110037464A (en) 2019-04-11 2019-04-11 Playground open-air grandstand seat extension/retraction device

Publications (1)

Publication Number Publication Date
CN110037464A true CN110037464A (en) 2019-07-23

Family

ID=67276825

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910290058.7A Withdrawn CN110037464A (en) 2019-04-11 2019-04-11 Playground open-air grandstand seat extension/retraction device

Country Status (1)

Country Link
CN (1) CN110037464A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112727162A (en) * 2020-12-29 2021-04-30 温州博旺联科建筑工程有限公司 Rain-proof interim stand

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112727162A (en) * 2020-12-29 2021-04-30 温州博旺联科建筑工程有限公司 Rain-proof interim stand

Similar Documents

Publication Publication Date Title
CN206036554U (en) A surveillance camera head for self -service bank
CN110037464A (en) Playground open-air grandstand seat extension/retraction device
CN107117224B (en) A kind of lamp post clean robot
CN108962047A (en) A kind of LED display fixed frame
CN206903001U (en) A kind of double-layered glass facade of adjustable sunshine range of exposures
CN111186244B (en) Dynamic statue and intelligent control system
CN103061546A (en) Large-sized live-action performance theatre
CN205214823U (en) Rotatory show shelf of paintings
CN203444231U (en) Novel screen showing frame
CN103735093A (en) Textile showing stand
CN203160747U (en) Large-scale live-action performance theatre
CN108543289B (en) A kind of multi-functional basket-shooting machine
CN201596628U (en) Sorting weeding device
CN108078298A (en) A kind of decoration screen with traverse moving function
CN110237471B (en) Multi-pipeline fire hose reel based on scenic spot
CN209534566U (en) A kind of indoor design plotting unit
CN110720791B (en) Display device of industrial design model
CN206715119U (en) A kind of physical education horizontal bar
CN202618849U (en) Sliding type storage cabinet
CN210294797U (en) Holographic projection screen applied to 3D volume holographic image display system
CN108325894A (en) A kind of highway lamp bar cleaning robot
CN214279512U (en) Exhibition wall for exhibition hall
CN108056599A (en) A kind of disc bookcase that can conveniently fetch eminence books
CN211283335U (en) Non-elastic elevator roller guide shoe
CN109302999A (en) A kind of clean type environmental protection pig house

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20190723

WW01 Invention patent application withdrawn after publication