CN111006113A - Shallow foundation pit large-stroke lifting screen - Google Patents
Shallow foundation pit large-stroke lifting screen Download PDFInfo
- Publication number
- CN111006113A CN111006113A CN201911261616.3A CN201911261616A CN111006113A CN 111006113 A CN111006113 A CN 111006113A CN 201911261616 A CN201911261616 A CN 201911261616A CN 111006113 A CN111006113 A CN 111006113A
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- Prior art keywords
- foundation pit
- frame body
- upright post
- block
- stroke
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 241000220317 Rosa Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention provides a shallow foundation pit large-stroke lifting screen, which relates to the technical field of projection screens and comprises a foundation pit seat and a lifting frame connected with the foundation pit seat, wherein the lifting frame comprises a first frame body and a second frame body, a first upright post and a first block which is arranged on the first upright post and extends towards the inner wall direction of the foundation pit seat are arranged on the first frame body, a lower guide wheel and an upper guide wheel are arranged on the first upright post, a second upright post and a second block which is arranged on the second upright post and extends towards the direction of the first upright post are arranged on the second frame body, a fixed wheel and a connecting steel wire which sequentially penetrates through the fixed wheel, the first block, the lower guide wheel and the upper guide wheel to be connected with the second block are arranged on the foundation pit seat, and a projection plate is arranged outside the first frame body and the. The shallow foundation pit large-stroke lifting screen has the advantages of simple structure, capability of lifting, no occupation of the space of a foundation pit, low manufacturing cost, low maintenance cost, simplicity in arrangement, energy conservation and environmental friendliness.
Description
Technical Field
The invention relates to the technical field of projection screens,
in particular, the invention relates to a shallow foundation pit large-stroke lifting screen.
Background
Along with the increasing abundance of cultural life, people have higher and higher requirements on stage effects in performance activities, and in order to enable performance arts to generate unusual special effects, various types of stage mechanical equipment are installed in modern various large-scale performance places and the like, and the stage mechanical equipment plays the roles of drawing dragon eyes and making a look in the stage performance.
In order to continuously innovate the performance mode of the performance, more and more novel and high-tech vision enjoyment is pursued, and in the practical process, in order to meet the requirement, directors and related technicians design more and more stages, Chinese people have special feelings to water, so that water elements are presented on the stages in various modes, and various water show performances are born in the large background. In order to match with rendering atmosphere of the performance in the water show performance, a plurality of laser projections are required to be matched for application, so that a proper lifting projection screen needs to be matched for the water show performance. The traditional lifting screen has high requirement on the depth of a foundation pit, the height of the traditional lifting screen is generally 1.5 times of the height of the lifting screen, the height of 10 m is a relatively common size for an outdoor projection screen, the depth of the foundation pit is required to be 15 m, the difficulty of building the foundation pit is very high, and the height of a projection screen is forced to be reduced in certain areas due to the fact that the foundation pit meeting the requirement cannot be built due to geological relations, so that the performance effect cannot reach the expectation. And the driving mechanism of the traditional lifting screen generally adopts a hydraulic or rigid chain structure, and the structure inherently has own advantages, such as stable lifting, large bearing capacity and the like, but has obvious defects of high cost, no water and dust resistance, occupation of foundation pit space and the like when being used as an outdoor lifting screen.
Therefore, in order to solve the above problems, it is necessary to design a reasonable shallow pit large stroke lifting screen.
Disclosure of Invention
The invention aims to provide the shallow pit large-stroke lifting screen which is simple in structure, can be lifted, does not occupy the space of a foundation pit, is low in manufacturing cost and maintenance cost, is simple in arrangement, is energy-saving and environment-friendly.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the utility model provides a shallow pit large stroke lift screen, including the foundation ditch seat and with the crane that the foundation ditch seat is connected, the crane includes first support body and second support body, be provided with first stand on the first support body and set up in on the first stand to the first piece that foundation ditch seat inner wall direction extended the setting, be provided with down guide wheel and last guide wheel on the first stand, be provided with the second stand on the second support body and set up in on the second stand to the second piece that first stand direction extended the setting, be provided with the tight pulley on the foundation ditch seat and pass in proper order tight pulley, first piece, lower guide wheel, go up the guide wheel with the connection steel wire that the second piece is connected, first support body and second support body outside are provided with the projection board.
Preferably, the number of the connecting steel wires, the first upright columns and the second upright columns is at least two, and the lengths of the second upright columns are different.
Preferably, the first frame body is an isosceles trapezoid steel frame.
Preferably, the upper surface of the second frame body is inclined.
Preferably, the inner wall of the foundation pit seat is provided with a first sliding groove for facilitating the sliding of the first block.
Preferably, the first column is provided with a second chute for facilitating sliding of the second block.
Preferably, the first sliding groove and the second sliding groove are both vertically extended.
Preferably, the number of the fixed wheels, the lower guide wheels and the upper guide wheels is at least one.
Preferably, the projection plate is a perforated aluminum plate, and the number of perforations on the projection plate is at least one.
Preferably, a winch connected with the connecting steel wire is arranged on the foundation pit seat, the winch is provided with a PLC (programmable logic controller), and a position sensor electrically connected with the PLC is arranged on the second frame body.
The shallow foundation pit large-stroke lifting screen has the beneficial effects that: the lifting device has the advantages of simple structure, capability of lifting, no occupation of foundation pit space, low manufacturing cost, low maintenance cost, simple arrangement, energy conservation and environmental protection.
Drawings
FIG. 1 is a schematic structural view of a shallow foundation pit large-stroke lifting screen according to the present invention when unfolded;
FIG. 2 is a schematic structural diagram of the shallow pit large-stroke lifting screen of the present invention during retraction;
FIG. 3 is a schematic structural diagram of a first frame of a shallow foundation pit large-stroke lifting screen according to the present invention;
FIG. 4 is a schematic structural diagram of a second frame of the shallow pit large-stroke elevating screen according to the present invention;
in the figure: 1. foundation ditch seat, 11, tight pulley, 12, connection steel wire, 2, crane, 21, first support body, 211, first stand, 212, first piece, 213, lower guide wheel, 214, go up guide wheel, 22, second support body, 221, second stand, 222, second piece, 23, projection board.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples.
The first embodiment is as follows: as shown in fig. 1 to 4, which is only one embodiment of the present invention, a large-stroke lift screen for shallow foundation pits includes a foundation pit base 1 and a lift frame 2 connected to the foundation pit base 1, where the lift frame 2 includes a first frame body 21 and a second frame body 22, a first upright column 211 and a first block 212 arranged on the first upright column 211 and extending toward an inner wall of the foundation pit base 1 are arranged on the first frame body 21, a lower guide wheel 213 and an upper guide wheel 214 are arranged on the first upright column 211, a second upright column 221 and a second block 222 arranged on the second upright column 221 and extending toward the first upright column 211 are arranged on the second upright column 22, a fixed wheel 11 and a connecting steel wire 12 sequentially passing through the fixed wheel 11, the first block 212, the lower guide wheel 213, the upper guide wheel 214 and connected to the second block 222 are arranged on the foundation pit base 1, a projection plate 23 is arranged outside the first frame body 21 and the second frame body 22.
In the invention, the connecting steel wire 12 is pulled by the winch, the first frame body 21 and the second frame body 22 can be lifted upwards in the foundation pit seat 1, otherwise, the connecting steel wire 12 is loosened, the first frame body 21 and the second frame body 22 are lowered and hidden, and a two-stage lifting principle is adopted, compared with the traditional integrated lifting screen, the required foundation pit depth can be reduced by one time, meanwhile, the design innovatively adopts a connecting steel wire 12 traction mode in a driving system, driving equipment (the winch) is separated from the lifting frame 2, the connecting steel wire 12 connected with the lifting frame 2 can arrange the winch outside the foundation pit through the guide of the fixed wheel 11, the lower guide wheel 213 and the upper guide wheel 214, and meanwhile, the lifting frame 2 pulled by the connecting steel wire 12 can be installed separately from the driving, so that the lifting frame 2 can be used in extreme environments such as water.
The lifting frame 2 is divided into a two-layer structure and comprises a first frame body 21 and a second frame body 22.
Firstly, be provided with first stand 211 on first support body 21 and set up in on first stand 211 to the first piece 212 that 1 inner wall direction of foundation ditch seat extended the setting, just 1 inner wall of foundation ditch seat is provided with and is used for making things convenient for the gliding first spout of first piece 212, first spout extends the setting for vertical direction, namely when hoist engine pulling connecting wire 12, first support body 21 rises along first spout is vertical upwards under first stand 211 is spacing.
Then be second support body 22, be provided with down guide wheel 213 and last guide wheel 214 on first stand 211, be provided with second stand 221 on the second support body 22 and set up in second stand 221 is to the second piece 222 that first stand 211 direction extended setting, first stand 211 is a movable pulley in fact, is a guide post again, be provided with on first stand 211 and be used for making things convenient for the gliding second spout of second piece 222, and the second spout extends the setting for vertical direction, namely when connecting wire 12 was taut, under the circumstances that first stand 211 rose, second stand 221 rose upwards along the second spout relative to first stand 211.
Like this doublestage goes up and down, effectively reduces the demand of foundation ditch seat 1 degree of depth, and when foundation ditch seat 1 height limit, crane 2 rises the theoretical maximum value of height and is the twice of foundation ditch seat 1. Or put another way, when the height of the lifting frame 2 to be lifted is constant, the depth of the foundation pit seat 1 adopting the invention is theoretically the minimum half of the lifting height.
It should be noted that the first block 212 is provided with a through hole for allowing the connecting steel wire 12 to pass through conveniently, the second block 222 is provided with a fixing buckle for fixing the end of the connecting steel wire 12, the first block 212 is movably connected with the connecting steel wire 12, and the connecting steel wire 12 can pass through the through hole of the first block 212, and is fixedly connected with the fixing buckle arranged above the second block 222 after sequentially bypassing the lower guide wheel 213 and the upper guide wheel 214.
Of course, the quantity of connecting steel wire 12, first stand 211 and second stand 221 all is two at least, and connecting steel wire 12, first stand 211 and second stand 221 are two generally speaking, and set up respectively in the both sides of foundation ditch seat 1, and two first stands 211 set up at foundation ditch seat 1 inner wall, and two second stands 221 set up between two first stands 211, and a first stand 211 and second stand 221 are connected to a connecting steel wire 12, and both ends go up and down simultaneously like this, and crane 2 is more stable.
Finally first support body 21 and second support body 22 outside are provided with projection board 23, projection board 23 is also projection screen, a light for accepting light and shadow lamp source transmission comes, projection board 23 should set up with first support body 21 and second support body 22 lateral surface level, also can set up along first support body 21 and second support body 22 side line, only need projection board 23 upper end and second support body 22 upper end to be connected, projection board 23 lower extreme is connected with first support body 21 lower extreme, projection board 23 expandes when guaranteeing first support body 21 and second support body 22 to rise, and projection board 23 expandes highly equals the sum of first support body 21 and second support body 22 height.
In order to facilitate the connection between the projection plate 23 and the first frame body 21 and the second frame body 22, the side edges of the first frame body 21 and the second frame body 22 are provided with mounting posts extending outwards. Preferably, the mounting posts are disposed outside of the first vertical posts 211 so that movement of the first vertical posts 211 and the second vertical posts 221 does not affect the mounting posts, and in this case, it is advantageous that the width of the projection plate 23 can be greater than the distance between the two first vertical posts 211.
Of course, the lengths of the first upright posts 211 must be the same, so that the rising height of the first frame 21 needs to be fixed to ensure that the second frame 22 does not slide out of the second sliding groove, but the lengths of the second upright posts 221 may be different, so that the rising heights of the two ends of the second frame 22 may be different, so that the projection screen 23 may have different rising heights and may be extended to different positions to receive light projection.
The shallow foundation pit large-stroke lifting screen has the advantages of simple structure, capability of lifting, no occupation of the space of a foundation pit, low manufacturing cost, low maintenance cost, simplicity in arrangement, energy conservation and environmental friendliness.
The second embodiment is also shown in fig. 1 to 4, which is only one embodiment of the present invention, and in order to make the adjustment effect of the shallow pit large-stroke lifting screen of the present invention better and make the stability higher, the present invention further has the following design:
first, the first frame body 21 is an isosceles trapezoid steel frame, so that the stability of the first frame body 21 is higher.
Moreover, the upper surface of the second frame 22 is inclined, and the heights of the lower ends of the plurality of second vertical columns 221 are the same, but the heights of the upper ends of the second vertical columns 221 may be different, so that the upper surface of the second frame 22 is inclined.
Then, the support legs of the support arranged at the bottom of the foundation pit seat 1 are connected with the embedded parts at the bottom of the foundation pit seat 1 and are formed by welding square pipes, the surface is subjected to hot galvanizing treatment to prevent rusting, and the device is convenient to arrange under water for use.
In addition, the projection plate 23 is a perforated aluminum plate, and the number of perforations on the projection plate 23 is at least one. Projection board 23 passes through rivet (erection column) to be fixed on first support body 21 and second support body 22 surface, and projection board 23 adopts the preparation of 3mm thickness perforated aluminum plate, and aluminum plate has lighter quality and higher rust-resistant ability, and the perforation size is diameter 5mm, and the hole interval is 20mm, and perforated aluminum plate can effectively reduce the wind pressure, provides the guarantee for outdoor performance.
And finally, a winch connected with the connecting steel wire 12 is arranged on the foundation pit seat 1, the winch is provided with a PLC (programmable logic controller), and a position sensor electrically connected with the PLC is arranged on the second frame body 22. Crane 2 uses the hoist engine as the drive, and through the rotation of PLC control hoist engine reel, the direction through first stand 211 and second stand 221 and the traction of connecting wire 12 upwards rise first support body 21 and second support body 22, the design has position sensor and is connected with the PLC controller simultaneously on second support body 22, send the motion gesture of second support body 22 to the PLC controller and form closed loop control, can be real-timely with the threshold value that sets up contrast and adjust the motion of hoist engine, avoid appearing leading to the uncontrollable condition appearance to appear in the motion gesture because of the hoist engine zero offset appears in long-time motion.
The shallow foundation pit large-stroke lifting screen has the advantages of simple structure, capability of lifting, no occupation of the space of a foundation pit, low manufacturing cost, low maintenance cost, simplicity in arrangement, energy conservation and environmental friendliness.
The present invention is not limited to the above-described specific embodiments, and various modifications and variations are possible. Any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a shallow foundation pit large stroke lift screen which characterized in that: the lifting frame (2) is connected with the foundation pit base (1), the lifting frame (2) comprises a first frame body (21) and a second frame body (22), a first upright post (211) and a first block (212) which is arranged on the first upright post (211) and extends towards the inner wall direction of the foundation pit base (1) are arranged on the first frame body (21), a lower guide wheel (213) and an upper guide wheel (214) are arranged on the first upright post (211), a second upright post (221) and a second block (222) which is arranged on the second upright post (221) and extends towards the direction of the first upright post (211) are arranged on the second frame body (22), a fixed wheel (11) is arranged on the foundation pit base (1), and a connecting steel wire (12) which is connected with the second block (222) sequentially penetrates through the fixed wheel (11), the first block (212), the lower guide wheel (213) and the upper guide wheel (214), and projection plates (23) are arranged on the outer sides of the first frame body (21) and the second frame body (22).
2. The shallow pit large-stroke lifting screen as claimed in claim 1, wherein: the quantity of connecting wire (12), first stand (211) and second stand (221) all is two at least, and is a plurality of second stand (221) all are all inequality.
3. The shallow pit large-stroke lifting screen as claimed in claim 1, wherein: the first frame body (21) is an isosceles trapezoid steel frame.
4. A shallow pit large stroke elevating screen as claimed in claim 2, wherein: the upper surface of the second frame body (22) is obliquely arranged.
5. The shallow pit large-stroke lifting screen as claimed in claim 1, wherein: the inner wall of the foundation pit seat (1) is provided with a first sliding groove used for facilitating the sliding of the first block (212).
6. A shallow pit large-stroke lifting screen as claimed in claim 5, wherein: the first upright post (211) is provided with a second sliding groove used for facilitating the sliding of the second block (222).
7. A shallow pit large-stroke lifting screen as claimed in claim 6, wherein: the first sliding groove and the second sliding groove are both arranged in a vertical extending mode.
8. The shallow pit large-stroke lifting screen as claimed in claim 1, wherein: the number of the fixed wheels (11), the lower guide wheels (213) and the upper guide wheels (214) is at least one.
9. The shallow pit large-stroke lifting screen as claimed in claim 1, wherein: the projection plate (23) is a perforated aluminum plate, and the number of perforations on the projection plate (23) is at least one.
10. The shallow pit large-stroke lifting screen as claimed in claim 1, wherein: the foundation pit base (1) is provided with a winch connected with the connecting steel wire (12), the winch is provided with a PLC (programmable logic controller), and the second frame body (22) is provided with a position sensor electrically connected with the PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911261616.3A CN111006113A (en) | 2019-12-10 | 2019-12-10 | Shallow foundation pit large-stroke lifting screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911261616.3A CN111006113A (en) | 2019-12-10 | 2019-12-10 | Shallow foundation pit large-stroke lifting screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111006113A true CN111006113A (en) | 2020-04-14 |
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ID=70114412
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911261616.3A Pending CN111006113A (en) | 2019-12-10 | 2019-12-10 | Shallow foundation pit large-stroke lifting screen |
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| Country | Link |
|---|---|
| CN (1) | CN111006113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112591644A (en) * | 2020-12-10 | 2021-04-02 | 广州励丰文化科技股份有限公司 | Art performance device |
-
2019
- 2019-12-10 CN CN201911261616.3A patent/CN111006113A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112591644A (en) * | 2020-12-10 | 2021-04-02 | 广州励丰文化科技股份有限公司 | Art performance device |
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