CN111240005B - Central hole opening and closing coaxial sleeve type synchronous lifting dome cover - Google Patents
Central hole opening and closing coaxial sleeve type synchronous lifting dome cover Download PDFInfo
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- CN111240005B CN111240005B CN202010028280.2A CN202010028280A CN111240005B CN 111240005 B CN111240005 B CN 111240005B CN 202010028280 A CN202010028280 A CN 202010028280A CN 111240005 B CN111240005 B CN 111240005B
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- pulley block
- rope
- sleeve
- dome
- cover plate
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/08—Arrangements of sheaves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/02—Hoists or accessories for hoists
- B66D2700/026—Pulleys, sheaves, pulley blocks or their mounting
- B66D2700/028—Pulley blocks with multiple sheaves
Abstract
The invention discloses a central hole opening and closing coaxial sleeve type synchronous lifting dome cover, which comprises a sleeve type lifting assembly, a dome cover, a cover plate and a push-pull driving device, wherein the sleeve type lifting assembly is arranged on the dome cover; the telescopic lifting assembly is driven by the driving mechanism to do telescopic motion along the vertical direction to form a cylindrical closed space, the dome cover is fixedly connected to the top end of the telescopic lifting assembly to follow up, the dome cover is an installation carrier of the push-pull driving device, the dome cover is provided with a circular middle hole, the middle hole provides an observation visual angle for the telescope, the two semicircular cover plates are horizontally and symmetrically installed in the push-pull driving device, the push-pull driving device drives the cover plates to open or close the middle hole of the dome cover, and the cover plates generate turnover motion when the middle hole is closed so that the butt joint is sealed. When the telescope observes, the middle hole cover at the top of the dome cover is opened and then falls down together with the telescopic sleeve, so that an unshielded observation environment is provided for the telescope; when the telescope is not observed, the telescopic sleeve is lifted, and the middle hole cover is closed, so that the telescope equipment is protected in a closed environment.
Description
Technical Field
The invention relates to a dome cover for providing protection for a foundation large-caliber single photoelectric imaging telescope, in particular to a dome cover with an openable top and capable of being lifted synchronously, and belongs to the technical field of non-standard domes.
Background
A foundation large-aperture single photoelectric imaging telescope is a large-scale precise optical device for observing outer space, the telescope is usually arranged in an open air environment, and the device needs to be physically shielded by a protection facility in a non-working state so as to be convenient for fog prevention and dust prevention. The traditional protection methods mainly comprise two methods: firstly, adopt the follow-up dome to follow telescope synchronous rotation, the glasses of looking obtain good tracking performance when observing, and its angular velocity and angular acceleration are great, because the follow-up dome of heavy-calibre has big inertia, and has the characteristics of non-linear friction, consequently, the dynamic behavior of follow-up dome is difficult guarantee more. Secondly, the flip dome is adopted, and the telescope requires a shielding angle of 0 degree during observation, so that the flip dome can shield the telescope at a certain angle after being opened, and the observation performance of the equipment can be influenced.
Disclosure of Invention
In view of the above, the invention provides a central hole opening and closing coaxial sleeve type synchronous lifting dome cover, wherein when a telescope observes, a cover plate at the top of the dome cover is opened and then falls down together with a telescopic sleeve, so that an unshielded observation environment is provided for the telescope; when the telescope is not observed, the telescopic sleeve rises and the rear cover plate is closed, so that a closed environment is formed to protect the telescope equipment.
A central hole opening and closing coaxial sleeve type synchronous lifting dome comprises a sleeve type lifting assembly, a dome cover, a cover plate and a push-pull driving device;
the telescopic lifting assembly is driven by the driving mechanism to do telescopic motion along the vertical direction to form a cylindrical closed space, the dome cover is fixedly connected to the top end of the telescopic lifting assembly to follow up, the dome cover is an installation carrier of the push-pull driving device, the dome cover is provided with a circular middle hole, the middle hole provides an observation visual angle for the telescope, the two semicircular cover plates are horizontally and symmetrically installed in the push-pull driving device, the push-pull driving device drives the cover plates to open or close the middle hole of the dome cover, and the cover plates perform turnover motion when the middle hole is closed so that the butt joint is sealed.
Further, the dome further comprises a crane system, a follow-up elevating ladder, an annular corridor and an emergency protection cover; the crane system is arranged in the dome cover to provide hoisting guarantee for the installation of the telescope part; the follow-up lifting crawling ladder and the annular corridor are arranged outside the sleeve type lifting assembly and provide a passage for maintenance personnel; when the dome breaks down, the emergency protection cover in the dome is started to completely seal the telescope, so that the telescope is protected from environmental influence.
Furthermore, the outer surfaces of the dome cover and the cover plate are both sprayed with high-reflectivity coatings, the reflectivity is not less than 80%, and the dome cover and the middle hole protective cover structure are internally sprayed with insulating layers.
Furthermore, the sleeve type lifting assembly comprises a winch, a steering adjusting pulley block, a rope distribution pulley block, a base, a sleeve assembly, a bolt mechanism and an in-place sealing mechanism;
the sleeve component is formed by sequentially sleeving more than three sleeves, and the sleeve at the innermost layer is sleeved on the outer circumferential surface of the base; the installation base is provided with a steering adjustment pulley block and a rope distribution pulley block, the winch is installed below the steering adjustment pulley block and the rope distribution pulley block, a plurality of steel wire ropes in the vertical direction are adjusted to be in the horizontal direction by the steering adjustment pulley block and then are uniformly distributed to lifting points of the outermost sleeve of the sleeve assembly through the rope distribution pulley block, meanwhile, the sleeve is pulled to rise by converting horizontal force into vertical pulling force to realize controlled synchronous lifting of the sleeve assembly, after the sleeve rises to the place, the axial positioning of adjacent sleeves is realized through a bolt mechanism installed on the sleeve, and the in-place sealing between the adjacent sleeves is realized through the extrusion deformation between in-place sealing mechanisms.
Furthermore, the innermost sleeve of the sleeve assembly is guided and positioned through a fixed lifting guide rail and a lifting travel switch which are arranged on the outer circumferential surface of the base, the upper end and the lower end of the inner sleeve are respectively provided with a fixed steering pulley, and the lower end of the outermost sleeve is provided with a movable steering pulley block.
Furthermore, the steering adjustment pulley block comprises a vertical steering pulley block and an adjustment pulley block, the vertical steering pulley block converts twelve steel wire ropes on the winch from a vertical state to a horizontal state, and the adjustment pulley block adjusts the twelve steel wire ropes to a proper horizontal height.
Furthermore, the rope-matching pulley block comprises a five-rope horizontal pulley block, a six-rope horizontal pulley block, a three-shaft six-rope pulley block, two three-shaft five-rope pulley blocks, a two-shaft four-rope pulley block, a two-shaft three-rope pulley block, a horizontal steering double-rope pulley block and three horizontal steering pulleys;
twelve pulley blocks including a three-axis six-rope pulley block, a three-axis five-rope pulley block, a two-axis four-rope pulley block, a two-axis three-rope pulley block, a horizontal steering double-rope pulley block and a horizontal steering pulley are uniformly distributed in the circumferential direction of the sleeve assembly, one horizontal steering pulley is positioned between the three-axis five-rope pulley block and the three-axis six-rope pulley block, the three-axis five-rope pulley block, the two-axis four-rope pulley block, the two-axis three-rope pulley block and the horizontal steering double-rope pulley block are symmetrically arranged in a mirror surface mode, and the other two horizontal steering pulleys are positioned between the two horizontal steering double-rope pulley blocks.
Furthermore, five parallel mounting shafts are arranged in the mounting shells of the five-rope horizontal pulley block and the six-rope horizontal pulley block, the pulleys are arranged on the mounting shafts in parallel in two layers, five pulleys are arranged in the five-rope horizontal pulley block, and six pulleys are arranged in the six-rope horizontal pulley block; three parallel mounting shafts are arranged in the mounting shells of the three-shaft six-rope pulley block and the three-shaft five-rope pulley block, the pulleys are arranged on the mounting shafts in parallel in two layers, six pulleys are arranged in the three-shaft six-rope pulley block, and five pulleys are arranged in the three-shaft five-rope pulley block; two parallel mounting shafts are arranged in the mounting shells of the two-shaft four-rope pulley block and the two-shaft three-rope pulley block, the pulleys are arranged on the mounting shafts in parallel in two layers, four pulleys are arranged in the two-shaft four-rope pulley block, and three pulleys are arranged in the two-shaft three-rope pulley block; the mounting shell of the horizontal steering double-rope pulley block and the mounting shell of the horizontal steering pulley are internally provided with a mounting shaft, the mounting shaft of the horizontal steering double-rope pulley block is provided with two pulleys, the mounting shaft of the horizontal steering pulley is provided with one pulley, and one pulley corresponds to one steel wire rope.
Further, the push-pull driving device comprises a driving unit, a walking track, a turnover unit and a sealing unit; the driving unit provides power to drive the chain wheel and the chain for transmission through the motor; the walking track is divided into an upper layer and a lower layer, the walking track provides a translational track and a support for the left cover plate and the right cover plate, the overturning units are installed on the left cover plate and the right cover plate and are matched with chains in the driving unit, the chains drive the overturning units to drive the left cover plate and the right cover plate to move forwards, and the overturning motion of the left cover plate and the right cover plate is realized by the self gravity of the overturning units before the left cover plate and the right cover plate are closed, so that the butt joint surfaces of the left cover plate and the right cover plate have positive pressure for realizing sealing when in butt joint; the sealing unit is arranged on the end face of the left cover plate and the end face of the right cover plate which move relatively, and the functions of snow blocking, water blocking and water guiding are achieved.
Has the advantages that:
1. the invention adopts the scheme of the coaxial sleeve type synchronous lifting dome cover, when the telescope needs to be protected, the required height is reached through the synchronous lifting of the sleeve type lifting assembly, the dome cover and the cover plate, the middle hole on the dome cover is sealed in a sealing way by the single-drive push-pull turnover device, the sealing protection of the telescope is formed, the scheme has good overall implementability and reliable protection, no additional influence is caused when the telescope works, and the sealing performance during the protection is reliable.
2. According to the sleeve type lifting component, the horizontal tension of a winch is uniformly applied to the sleeve by the rope-matching pulley block to realize the controlled synchronous lifting of the sleeve components, the axial positioning of adjacent sleeves is realized through the bolt assembly arranged on the sleeve after the sleeve is lifted to the proper position, the proper sealing between the adjacent sleeves is realized through the extrusion deformation between proper sealing structures, the synchronous telescopic adjusting function of a plurality of sleeve sets is met, and the proper locking and sealing can be realized.
3. The single-drive push-pull turnover device is driven by the chain wheel and the chain in a matched traction manner, and the swinging arm rocker with the roller is adopted, and the operation and control double rails are mutually matched, so that the mechanism realizes controllable linear motion and turnover motion during single-power drive, can meet the working condition requirements of translation and in-place turnover, and realizes the closure of the cover plate. The turning action can generate larger positive pressure, the positive pressure is utilized to extrude the sealing ring to meet the sealing requirement when the sealing ring is closed, and the defect that larger driving force is needed to realize sealing when the translation driving is carried out is overcome.
4. The outer surfaces of the dome cover and the cover plate are respectively sprayed with a high-reflectivity coating, the reflectivity is not less than 80%, the dome cover and the middle hole protective cover structure are internally sprayed with a heat-insulating foaming layer, the influence of the heat of the environment transferred into the dome to generate a damp-heat turbulent flow so as to image the telescope can be reduced through the two measures, and the accuracy of telescope observation is improved.
Drawings
FIG. 1 is a cross-sectional view of a hollow opening and closing flexible lifting coaxial sleeve type synchronous lifting dome;
FIG. 2 is a top plan view of a hollow opening and closing flexible lifting coaxial sleeve type synchronized lift dome;
FIG. 3 is a bottom plan view of a hollow opening and closing flexible lifting coaxial sleeve type synchronous lifting dome;
FIG. 4 is a schematic structural view of a five-rope horizontal pulley block;
FIG. 5 is a schematic structural view of a six-rope horizontal pulley block;
FIG. 6 is a schematic structural view of a triaxial six-rope pulley block;
FIG. 7 is a schematic structural view of a three-axle five-rope pulley block;
FIG. 8 is a schematic structural view of a two-shaft four-rope pulley block;
FIG. 9 is a schematic structural view of a two-shaft three-rope pulley block;
FIG. 10 is a schematic view of a structure of a horizontally steered double rope pulley block;
fig. 11 is a diagrammatic view of the structure of a horizontal diverting pulley;
FIG. 12 is a schematic view showing the construction of a driving unit and a traveling rail in the push-pull driving apparatus;
FIG. 13 is a schematic view of the construction of the tilting unit in the push-pull actuator;
FIG. 14 is a schematic view of the sealing unit in the push-pull actuator;
FIG. 15 is a schematic view of the cover closing operation.
Wherein: 1-dome cover, 2-cover plate, 3-push-pull driving device, 4-winch, 5-five-rope horizontal pulley block, 6-adjusting pulley block, 7-vertical steering pulley block, 8-fixed lifting guide rail, 9-bolt mechanism, 10-counterweight system, 11-crane system, 12-follow-up lifting ladder, 13-annular corridor, 14-emergency protective cover, 15-side upper track assembly, 16-three-shaft five-rope pulley block, 17-two-shaft four-rope pulley block, 18-two-shaft three-rope pulley block, 19-horizontal steering double-rope pulley block, 20-horizontal steering pulley, 21-three-shaft six-rope pulley block, 22-insulating layer, 23-high-reflectivity coating, 24-telescope, 25-driving mechanism, 26-steel wire rope, 27-six-rope horizontal pulley block, 28-front chain wheel assembly, 29-chain, 30-driving chain wheel assembly, 31-universal coupling, 32-motor assembly, 33-side lower rail assembly, 34-middle rail assembly, 35-overturning guide plate, 36-front traveling wheel, 37-control roller, 38-rocker, 39-chain joint assembly, 40-snow baffle, 41-sealing ring, 42-water baffle, 43-water chute, 44-mounting shaft and 45-pulley.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
As shown in fig. 1 and 2, the invention provides a central hole opening and closing coaxial sleeve type synchronous lifting dome, which comprises a sleeve type lifting component, a dome cover 1, a cover plate 2, a push-pull driving device 3, a crane system 11, a follow-up lifting ladder stand 12, an annular corridor 13 and an emergency protective cover 14;
the telescopic lifting component is driven by a winch 4 to do telescopic motion along the vertical direction to form a cylindrical closed space, a dome cover 1 is fixedly connected to the top end of the telescopic lifting component to follow up, the dome cover 1 is an installation carrier of a push-pull driving device 3, the dome cover is provided with a circular middle hole, the middle hole provides an observation visual angle for a telescope, two semicircular cover plates 2 are horizontally and symmetrically installed in the push-pull driving device 3, the push-pull driving device 3 drives the cover plates 2 to open or close the middle hole of the dome cover 1, and the cover plates 2 generate turnover motion when the middle hole is closed so as to seal the butt joint; the crane system 11 is arranged in the dome cover to provide hoisting guarantee for the installation of the telescope parts; the follow-up lifting ladder stand 12 and the annular corridor 13 are arranged outside the sleeve type lifting assembly, and the follow-up lifting ladder stand 12 and the annular corridor 13 provide passages for maintainers; when the dome fails, the emergency protection cover 14 is arranged on the ground inside the dome cover 1, and the telescope 24 is completely closed under the driving of the driving mechanism 25, so that the telescope 24 is protected from the environment.
Wherein, the outer surfaces of the dome cover 1 and the cover plate 2 are both sprayed with a high reflectivity coating 23, the reflectivity is not less than 80 percent, and the dome cover and the middle hole protective cover structure are internally sprayed with an insulating layer 22.
The sleeve type lifting assembly comprises a winch 4, a vertical steering pulley block 7, an adjusting pulley block 6, a rope-matching pulley block, a base, a sleeve assembly, a bolt mechanism 9 and an in-place sealing mechanism;
the sleeve component is formed by sequentially sleeving three sleeves, and the sleeve at the innermost layer is sleeved on the outer circumferential surface of the base; a vertical steering pulley block 7, an adjusting pulley block 6 and a rope distribution pulley block are arranged on the mounting base, the winch 4 is arranged below the vertical steering pulley block 7, a plurality of steel wire ropes in the vertical direction are adjusted to be in the horizontal direction by the vertical steering pulley block 7, the steel wire ropes are adjusted to be at proper horizontal height by the adjusting pulley block, then the steel wire ropes are uniformly distributed to a lifting point of a sleeve on the outermost layer of the sleeve assembly through the rope distribution pulley block, meanwhile, horizontal force is converted into vertical pulling force to pull the sleeve to rise so as to realize the controlled synchronous lifting of the sleeve assembly, after the sleeve rises to the right position, the axial positioning of adjacent sleeves is realized through a bolt mechanism 9 arranged on the sleeve, and the in-place sealing between the adjacent sleeves is realized through the extrusion deformation between in-place sealing mechanisms; the innermost sleeve of the sleeve component is guided and positioned through a fixed lifting guide rail 8 and a lifting travel switch which are arranged on the outer circumferential surface of the base, the upper end and the lower end of the inner sleeve are respectively provided with a fixed steering pulley, and the lower end of the outermost sleeve is provided with a movable steering pulley block.
As shown in fig. 3, the rope-matching pulley block comprises a five-rope horizontal pulley block 5, a six-rope horizontal pulley block 27, a three-shaft six-rope pulley block 21, two three-shaft five-rope pulley blocks 16, a two-shaft four-rope pulley block 17, a two-shaft three-rope pulley block 18, a horizontal steering double-rope pulley block 19 and three horizontal steering pulleys 20;
twelve pulley blocks, namely a three-axis six-rope pulley block 21, a three-axis five-rope pulley block 16, a two-axis four-rope pulley block 17, a two-axis three-rope pulley block 18, a horizontal steering double-rope pulley block 19 and a horizontal steering pulley block 20, are uniformly distributed in the circumferential direction of the sleeve assembly, one horizontal steering pulley block 20 is positioned between the three-axis five-rope pulley block 16 and the three-axis six-rope pulley block 21, the three-axis five-rope pulley block 16, the two-axis four-rope pulley block 17, the two-axis three-rope pulley block 18 and the horizontal steering double-rope pulley block 19 are arranged in a mirror symmetry manner, and the other two horizontal steering pulley blocks 20 are positioned between the two horizontal steering double-rope pulley blocks 19.
The winch 4 is wound with twelve groups of steel wire ropes 26, the steel wire ropes 26 are connected to lifting points on the outer sleeve 1 through a vertical steering pulley block 7, an adjusting pulley block 6, a five-rope horizontal pulley block 5 and a six-rope horizontal pulley block 27 in sequence, twelve lifting points on the outer sleeve 1 correspond to a three-shaft six-rope pulley block 21, two three-shaft five-rope pulley blocks 16, a two-shaft four-rope pulley block 17, a two-shaft three-rope pulley block 18, a horizontal steering double-rope pulley block 19 and three horizontal steering pulleys 20.
Eleven of twelve steel wire ropes are distributed to a next-level lifting point by the five-rope horizontal pulley block 5 and the six-rope horizontal pulley block 27, the other steel wire rope is directly connected with one horizontal steering pulley 20, six steel wire ropes are distributed to the three-shaft six-rope pulley block 21 by the six-rope horizontal pulley block 27, the three-shaft six-rope pulley block 21 sequentially distributes to the three-shaft five-rope pulley block 16, the two-shaft four-rope pulley block 17, the two-shaft three-rope pulley block 18, the horizontal steering double-rope pulley block 19 and the horizontal steering pulley 20 step by step, and five steel wire ropes are distributed to the three-shaft five-rope pulley block 16, the two-shaft four-rope pulley block 17, the two-shaft three-rope pulley block 18, the horizontal steering double-rope pulley block 19 and the horizontal steering pulley block 20 step by the five-rope horizontal pulley block 5. The wire ropes 26 are stepped down by one before reaching the horizontal diverting pulley 20, the stepped down wire ropes 26 being connected to the corresponding hoisting points vertically upwards in the stage.
As shown in fig. 4 and 5, five parallel mounting shafts 44 are arranged inside the mounting housings of the five-rope horizontal pulley block 5 and the six-rope horizontal pulley block 27, the pulleys 45 are arranged on the mounting shafts 44 in parallel in two layers, five pulleys 45 are arranged in the five-rope horizontal pulley block 5, and six pulleys 45 are arranged in the six-rope horizontal pulley block 27.
As shown in fig. 6 and 7, three parallel mounting shafts 44 are arranged inside the mounting housings of the three-axis six-rope pulley block 21 and the three-axis five-rope pulley block 16, the pulleys 45 are arranged on the mounting shafts 44 in parallel in two layers, six pulleys 45 are arranged in the three-axis six-rope pulley block 21, and five pulleys 45 are arranged in the three-axis five-rope pulley block 16.
As shown in fig. 8 and 9, two parallel mounting shafts 44 are arranged inside the mounting housings of the two-shaft four-rope pulley block 17 and the two-shaft three-rope pulley block 18, the pulleys 45 are arranged on the mounting shafts 44 in parallel in two layers, four pulleys 45 are arranged in the two-shaft four-rope pulley block 17, and three pulleys 45 are arranged in the two-shaft three-rope pulley block 18;
as shown in fig. 10 and 11, the mounting housing of the horizontal diverting double-rope pulley block 19 and the horizontal diverting pulley 20 has a mounting shaft 44 inside, two pulleys 45 are mounted on the mounting shaft 44 of the horizontal diverting double-rope pulley block 19, one pulley 45 is mounted on the mounting shaft 44 of the horizontal diverting pulley 20, and one pulley 45 corresponds to one steel wire rope 26.
When the sleeve needs to be lifted, the winch 20 is started to rotate and recover the steel wire ropes 26, the pulling forces of twelve steel wire ropes 26 simultaneously act on twelve hoisting points on the outer sleeve 1, the fixed lifting guide rail 8 and the movable steering pulley block 5 rotate the steel wire ropes 26 in the vertical direction to the horizontal direction, the steel wire rope 19 in the horizontal direction is turned to the vertical direction downwards through the five-rope horizontal pulley block 10, the six-rope horizontal pulley block 25, the adjusting pulley block 11 and the vertical steering control pulley block 12 and is connected to the winding drum assembly 21 below the ground foundation, a combined guide system which can effectively control the inclination degree of the system in the operation process in all directions is formed by a plurality of unidirectional guide assemblies which are matched with guide rails and twelve pulley blocks which are radially arranged along the circumferential direction of the sleeve, thereby realizing the safe lifting of the sleeve, when the sleeve is lifted to the right position, the bolt mechanism 4 and the right-position sealing mechanism 30 realize the functions of right-position locking and sealing.
As shown in fig. 2, the push-pull driving device 3 includes a driving unit, a traveling rail, a turning unit, and a sealing unit; the driving unit provides power to drive the chain wheel and the chain for transmission through the motor; the walking track is divided into an upper layer and a lower layer, the walking track provides a translational track and a support for the left cover plate and the right cover plate, the overturning units are installed on the left cover plate and the right cover plate and are matched with chains in the driving unit, the chains drive the overturning units to drive the left cover plate and the right cover plate to move forwards, and the overturning motion of the left cover plate and the right cover plate is realized by the self gravity of the overturning units before the left cover plate and the right cover plate are closed, so that the butt joint surfaces of the left cover plate and the right cover plate have positive pressure for realizing sealing when in butt joint; the sealing unit is arranged on the end face of the left cover plate and the end face of the right cover plate which move relatively, and the functions of snow blocking, water blocking and water guiding are achieved.
As shown in fig. 12, the driving unit includes a front sprocket assembly 28, a chain 29, a driving sprocket assembly 30, a universal coupling 31 and a motor assembly 32, the motor assembly 32 is connected to the driving sprocket assembly 30 through the universal coupling 31, the chain 29 is connected to the driving sprocket assembly 28 and the front sprocket assembly 28, the motor assembly 32 is installed on an extension line of the movement direction of the left cover plate and the right cover plate, and the transmission direction of the chain 29 is consistent with the opening and closing direction of the left cover plate and the right cover plate.
As shown in fig. 2, the traveling rail includes a side upper rail assembly 15, a side lower rail assembly 33, and a middle rail assembly 34; the upper side track assembly 15 and the lower side track assembly 33 are arranged up and down to form a group of guide rail pairs, and the two groups of guide rail pairs are arranged in parallel to form a left cover plate and a right cover plate to provide translation tracks and supports; the middle track assembly 34 is disposed between the two sets of rail pairs to provide additional support for the left and right cover plates.
As shown in fig. 13, the flipping unit includes a flipping guide plate 35, a front road wheel 36, a rear support wheel, a control roller 37, a rocker 38, and a chain joint assembly 39; the overturning guide plate is installed at the front end of the upper side track assembly, the front traveling wheel 36 is installed at the front ends of the left cover plate and the right cover plate, the front traveling wheel is matched with the track surface of the upper side running track assembly to travel, the front traveling wheel is simultaneously connected with the upper end of the rocker 38, the lower end of the rocker 38 is connected with the control roller 37, the control roller 37 is connected with the chain 29 in the push-pull driving device through the chain joint assembly 39, and the control roller 37 is matched with the track surface of the lower side track assembly 33; the rear supporting wheels are arranged at the rear ends of the left cover plate and the right cover plate and are matched with the middle rail assembly 34 to support the left cover plate and the right cover plate; the chain drives the control roller to move forward, and the driving force is transmitted to the front road wheel, the left cover plate and the right cover plate through the rocker 38; when the left cover plate and the right cover plate walk to the position of the turnover guide plate 35 along the straight line of the walking track, the front walking wheels 36 enter the grooves of the turnover guide plate 35, and the left cover plate and the right cover plate realize small-angle turnover under the self gravity.
As shown in fig. 14, the sealing unit includes a snow guard 40, a packing 41, a water guard 42 and a water chute 43; the snow baffle 40 is arranged on the upper surfaces of the left cover plate and the right cover plate, the sealing ring 41 is arranged on the outer side of the snow baffle 40 on the right cover plate, and the bottom of the snow baffle extrudes and deforms the sealing ring 41 when the front end of the left cover plate is in place and then turns downwards, so that the left cover plate and the right cover plate are sealed in place; the water baffle 42 and the water chute 43 are respectively positioned on the opposite end surfaces of the left cover plate and the right cover plate, and the water baffle 42 is embedded in the water chute.
The process of closing the two cover plates 2 (the left cover plate and the right cover plate) is shown in the attached figure 15, the state of the figure a is that the left cover plate and the right cover plate are in a fully opened position, and the state of the figure b is that the left cover plate and the right cover plate move in place along a straight line of a walking track by matching with a chain wheel and a chain for traction driving; the state of the diagram c is that the left cover plate and the right cover plate sequentially realize the overturning motion through the rocker with the roller and the mutual matching of the operation and control double tracks. The state of the diagram d is that after the left cover plate and the right cover plate are turned in place, the sealing device is well matched, and the left cover plate and the right cover plate are completely closed.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A central hole opening and closing coaxial sleeve type synchronous lifting dome cover is characterized in that the dome cover comprises a sleeve type lifting assembly, a dome cover, a cover plate and a push-pull driving device;
the telescopic lifting assembly is driven by the driving mechanism to do telescopic motion along the vertical direction to form a cylindrical closed space, the dome cover is fixedly connected to the top end of the telescopic lifting assembly to follow up, the dome cover is an installation carrier of the push-pull driving device, the dome cover is provided with a circular middle hole, the middle hole provides an observation visual angle for the telescope, the two semicircular cover plates are horizontally and symmetrically installed in the push-pull driving device, the push-pull driving device drives the cover plates to open or close the middle hole of the dome cover, and the cover plates generate turnover motion when the middle hole is closed so that the butt joint is sealed;
the sleeve type lifting assembly comprises a winch, a steering adjusting pulley block, a rope distribution pulley block, a base, a sleeve assembly, a bolt mechanism and an in-place sealing mechanism;
the sleeve component is formed by sequentially sleeving more than three sleeves, and the sleeve at the innermost layer is sleeved on the outer circumferential surface of the base; the installation base is provided with a steering adjustment pulley block and a rope distribution pulley block, the winch is installed below the steering adjustment pulley block and the rope distribution pulley block, a plurality of steel wire ropes in the vertical direction are adjusted to be in the horizontal direction by the steering adjustment pulley block and then are uniformly distributed to lifting points of the outermost sleeve of the sleeve assembly through the rope distribution pulley block, meanwhile, the sleeve is pulled to rise by converting horizontal force into vertical pulling force to realize controlled synchronous lifting of the sleeve assembly, after the sleeve rises to the place, the axial positioning of adjacent sleeves is realized through a bolt mechanism installed on the sleeve, and the in-place sealing between the adjacent sleeves is realized through the extrusion deformation between in-place sealing mechanisms.
2. A mesoporous split coaxial sleeve synchronized lifting dome as in claim 1 further comprising a crane system, a follow up lift ladder, an annular corridor and an emergency shield; the crane system is arranged in the dome cover to provide hoisting guarantee for the installation of the telescope part; the follow-up lifting crawling ladder and the annular corridor are arranged outside the sleeve type lifting assembly and provide a passage for maintenance personnel; when the dome breaks down, an emergency protective cover in the dome is started to completely seal the telescope.
3. A synchronously liftable and lowerable dome with a coaxial sleeve having a central opening and closing as claimed in claim 1 or 2, wherein said dome and cover plate are coated with a high reflectivity coating having a reflectivity of not less than 80% on the outer surface thereof, and the dome and cover plate are coated with an insulating layer inside the structure of the protective cover having the central opening and closing.
4. A hollow split coaxial sleeve type synchrotron lifting dome as claimed in claim 3, wherein the innermost sleeve of said sleeve assembly is guided and positioned by fixed lifting guide and lifting travel switch installed on the outer circumference of base, the upper and lower ends of the inner sleeve are respectively installed with fixed diverting pulleys, and the lower end of the outermost sleeve is installed with movable diverting pulley set.
5. The domed center hole opening-closing coaxial sleeve synchronized lift dome of claim 4, wherein the steering adjustment pulley set comprises a vertical steering pulley set that turns twelve wire ropes on the hoist from vertical to horizontal and an adjustment pulley set that adjusts the twelve wire ropes to the proper level.
6. The mesoporous collapsible coaxial sleeve synchronized lift dome of claim 5, wherein said rope-mating pulley set comprises a five-rope horizontal pulley set, a six-rope horizontal pulley set, a three-shaft six-rope pulley set, two three-shaft five-rope pulley sets, two-shaft four-rope pulley sets, two-shaft three-rope pulley sets, a horizontally-steering double-rope pulley set, and three horizontally-steering pulleys;
twelve pulley blocks including a three-axis six-rope pulley block, a three-axis five-rope pulley block, a two-axis four-rope pulley block, a two-axis three-rope pulley block, a horizontal steering double-rope pulley block and a horizontal steering pulley are uniformly distributed in the circumferential direction of the sleeve assembly, one horizontal steering pulley is positioned between the three-axis five-rope pulley block and the three-axis six-rope pulley block, the three-axis five-rope pulley block, the two-axis four-rope pulley block, the two-axis three-rope pulley block and the horizontal steering double-rope pulley block are symmetrically arranged in a mirror surface mode, and the other two horizontal steering pulleys are positioned between the two horizontal steering double-rope pulley blocks.
7. A hollow collapsible coaxial sleeve synchronized lift dome as in claim 6 wherein said five horizontal pulley set and six horizontal pulley set mounting shells each have five parallel mounting shafts side by side with the pulleys in two parallel layers on the mounting shafts, five horizontal pulley set with five pulleys and six horizontal pulley set with six pulleys; three parallel mounting shafts are arranged in the mounting shells of the three-shaft six-rope pulley block and the three-shaft five-rope pulley block, the pulleys are arranged on the mounting shafts in parallel in two layers, six pulleys are arranged in the three-shaft six-rope pulley block, and five pulleys are arranged in the three-shaft five-rope pulley block; two parallel mounting shafts are arranged in the mounting shells of the two-shaft four-rope pulley block and the two-shaft three-rope pulley block, the pulleys are arranged on the mounting shafts in parallel in two layers, four pulleys are arranged in the two-shaft four-rope pulley block, and three pulleys are arranged in the two-shaft three-rope pulley block; the mounting shell of the horizontal steering double-rope pulley block and the mounting shell of the horizontal steering pulley are internally provided with a mounting shaft, the mounting shaft of the horizontal steering double-rope pulley block is provided with two pulleys, the mounting shaft of the horizontal steering pulley is provided with one pulley, and one pulley corresponds to one steel wire rope.
8. A hollow collapsible coaxial sleeve synchronized lift dome as in claim 7 wherein said push-pull drive means comprises a drive unit, a travel track, a turning unit and a sealing unit; the driving unit provides power to drive the chain wheel and the chain for transmission through the motor; the walking track is divided into an upper layer and a lower layer, the walking track provides a translational track and a support for the left cover plate and the right cover plate, the overturning units are installed on the left cover plate and the right cover plate and are matched with chains in the driving unit, the chains drive the overturning units to drive the left cover plate and the right cover plate to move forwards, and the overturning motion of the left cover plate and the right cover plate is realized by the self gravity of the overturning units before the left cover plate and the right cover plate are closed, so that the butt joint surfaces of the left cover plate and the right cover plate have positive pressure for realizing sealing when in butt joint; the sealing unit is arranged on the end face of the left cover plate and the end face of the right cover plate which move relatively, and the functions of snow blocking, water blocking and water guiding are achieved.
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| CN111240005B true CN111240005B (en) | 2021-09-24 |
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| CN115594395B (en) * | 2022-09-21 | 2024-04-09 | 长飞光纤光缆股份有限公司 | Heat preservation furnace for PCVD deposition lathe |
| CN117492194B (en) * | 2023-12-29 | 2024-03-29 | 中国航天三江集团有限公司 | Large-size folding protective cover |
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| CN111240005A (en) | 2020-06-05 |
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