CN114249268A - Auxiliary lifting platform for space environment simulation test - Google Patents
Auxiliary lifting platform for space environment simulation test Download PDFInfo
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- CN114249268A CN114249268A CN202111424630.8A CN202111424630A CN114249268A CN 114249268 A CN114249268 A CN 114249268A CN 202111424630 A CN202111424630 A CN 202111424630A CN 114249268 A CN114249268 A CN 114249268A
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- 238000004088 simulation Methods 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000004146 energy storage Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 2
- 239000011435 rock Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 238000010008 shearing Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 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
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/0608—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement driven by screw or spindle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides an auxiliary lifting platform for a space environment simulation test in the technical field of space environment simulation equipment of spacecrafts, which comprises an upper frame, a lower frame and a scissor mechanism, wherein two ends of the scissor mechanism are respectively arranged on the upper frame and the lower frame; a lead screw piece penetrates through the lower frame, and one end of the lead screw piece is arranged on the inner wall of the lower frame in a penetrating manner through the scissor fork mechanism; a crank is arranged at one end of the screw rod piece arranged outside the lower frame; still include platform locking coupler, platform locking coupler includes coupler external tooth, coupler internal tooth and push-and-pull subassembly, and the push-and-pull subassembly drives coupler internal tooth and coupler external tooth separation setting, and the rotation that the lead screw spare passes through the crank and rotates the setting, cuts the rotation that the fork mechanism passes through the lead screw spare and goes up and down to set up, goes up the frame and goes up and down to set up through the lift of cutting the fork mechanism with the underframe. The invention meets the oil-free requirement of the optical test in the space environment simulation test and ensures that the platform stays in a self-locking way at any height.
Description
Technical Field
The invention relates to the technical field of space spacecraft space environment simulation equipment, in particular to an auxiliary lifting platform for a space environment simulation test.
Background
In order to satisfy optical tests under the thermal vacuum condition of the spacecraft, the position of the optical receiver of the test piece needs to be aligned with the optical window on the vacuum container. Because the size and the height of the optical receiver are different, and the position of the optical window is fixed, the problem that the sensor cannot be aligned with the optical glass often occurs, and the test is influenced. In order to meet the test requirements, the height of the platform for fixing the test piece can be adjusted and can be stopped at any height, and meanwhile, the whole set of platform mechanism needs to be clean and free of oil because the optical test is extremely sensitive to oil stains.
The invention discloses a lifting type heat sink assembly of a space environment simulator, which is found by the search of the prior art, wherein the Chinese invention patent publication No. CN109969434B discloses the lifting type heat sink assembly of the space environment simulator, and comprises a top heat sink, a detachable liquid inlet pipeline and a liquid outlet pipeline, a fixed hoisting system, a lifting hoisting tool, an upper part connecting device and a control system, wherein the upper part of the heat sink is hung below the lifting hoisting tool on the inner wall of an upper end enclosure of a space environment simulator container through a heat sink hoisting point, the fixed hoisting system is composed of an electric chain hoist and a mounting portal frame along with the ascending or descending of the hoisting tool, the electric chain hoist is arranged on the top of the container through the mounting portal frame and drives the lifting hoisting tool to ascend and descend, so that a lifting hook arranged on the chain hoist penetrates through a top flange of the container to enter the container of the space environment simulator. The patented technology suffers from the problems associated with it as described above.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an auxiliary lifting platform for a space environment simulation test.
The auxiliary lifting platform for the space environment simulation test comprises an upper frame, a lower frame and a scissor mechanism, wherein two ends of the scissor mechanism are respectively arranged on the upper frame and the lower frame;
a screw rod piece penetrates through the lower frame, and one end of the screw rod piece is arranged on the inner wall of the lower frame in a penetrating manner through the scissor fork mechanism;
a crank is arranged at one end of the screw rod piece, which is arranged outside the lower frame;
the platform locking coupler comprises outer coupler teeth, inner coupler teeth and a push-pull assembly, the outer coupler teeth and the inner coupler teeth are sleeved on the lead screw piece, the outer coupler teeth and the inner coupler teeth are arranged between the lower frame and the crank, one end of the push-pull assembly is arranged on the lead screw piece, the end part of the push-pull assembly is fixedly arranged with the inner coupler teeth, and the other end of the push-pull assembly is arranged on the crank;
the push-pull assembly drives the coupler inner teeth and the coupler outer teeth to be arranged in a separated mode, the lead screw piece is arranged in a rotating mode through rotation of the crank, the scissor fork mechanism is arranged in a lifting mode through rotation of the lead screw piece, and the upper frame and the lower frame are arranged in a lifting mode through lifting of the scissor fork mechanism.
In some embodiments, the scissors mechanism includes a first scissors rod and a second scissors rod, the first scissors rod and the second scissors rod are disposed to intersect with each other, one end of the first scissors rod is hinged to an inner wall of the upper frame, the other end of the first scissors rod is connected to the lower frame through a second end sliding shaft, one end of the second scissors rod is hinged to an inner wall of the lower frame, and the other end of the second scissors rod is connected to the upper frame through a first end sliding shaft; the screw rod piece penetrates through the second end sliding shaft to reach the inner wall of the lower frame; the shearing fork mechanisms are arranged in two groups, and the two groups of shearing fork mechanisms are connected through a middle pin shaft.
In some embodiments, an energy storage damper is sleeved on the screw rod piece, the energy storage damper comprises a protection box and a damper steel coil, the protection box is arranged between the lower frame and the inner teeth of the coupler, the damper steel coil is arranged in the protection box, and one end of the damper steel coil is fixedly arranged on the screw rod piece;
the coupler external tooth includes the upper cover, the upper cover sets up on the protection box, cover on and be equipped with the pillar, the attenuator coil of strip other end with the pillar is mutually supported and is set up.
In some embodiments, the outer coupler teeth further comprise a rectangular-toothed disc having a plurality of rectangular teeth circumferentially disposed thereon; the coupler inner tooth includes the buckle dish, a plurality of rectangle inner teeth have been seted up to buckle dish inner wall circumference, the buckle dish covers and establishes on the rectangle fluted disc, the rectangle tooth with rectangle inner tooth intercoupling sets up.
In some embodiments, be equipped with the column piece on the coupler internal tooth, the column piece sets up on the buckle dish does not be equipped with the terminal surface of rectangle internal tooth, first recess has been seted up on the lateral wall of column piece, the staple bolt can be dismantled in the setting of first recess internal fixation, the second recess has been seted up on the terminal surface of column piece, the cover is equipped with thrust spring on the lead screw piece, thrust spring's one end sets up in the second recess, thrust spring's the other end corresponds the crank setting.
In some embodiments, the platform locking coupler further includes a blocking piece and a limiting bolt, the blocking piece is disposed on the screw rod piece in a penetrating manner, the blocking piece is disposed corresponding to the other end of the thrust spring, the limiting bolt is disposed on the screw rod piece, and the other end face of the blocking piece is disposed in a limiting manner through the limiting bolt.
In some embodiments, the crank is designed in a zigzag structure, the crank comprises a fixed end, a connecting section and a holding end, the fixed end and the holding end are connected through the connecting section, and the fixed end and the end of the screw rod piece are fixedly arranged.
In some embodiments, the push-pull assembly includes a sleeve, a front push rod, and a rear push rod, the sleeve is sleeved on the hand-holding end, a rotating push ring is disposed at an end of the sleeve away from the connecting section, a hinge is disposed at an end of the sleeve close to the connecting section, the hinge is connected to the front push rod, the front push rod is connected to the rear push rod, and the rear push rod is connected to the rotating push ring;
the other side of the rotating push ring is provided with a wire puller, a pull wire is installed on the wire puller, and the pull wire is installed and arranged on the detachable hoop sequentially through the rear push rod, the front push rod and the connecting section.
In some embodiments, the screw member is a ball screw.
In some embodiments, when the crank is required to be rotated, the front push rod and the rear push rod on the crank sleeve push the rotary push ring to move backwards, the rotary push ring pushes the wire puller to move backwards, the wire puller pulls the inner teeth of the coupler to be separated from the outer teeth of the coupler through the pull wire, and the lifting platform is unlocked;
when the lifting platform descends, the crank is rotated clockwise to drive the screw rod piece to rotate, an energy storage damper steel coil arranged on the screw rod piece starts to contract for energy storage, the screw rod piece rotates to enable the scissor mechanism to extend in the horizontal direction, so that an upper frame of the lifting platform descends, when the upper frame descends to a target position, the sleeve is loosened, a thrust spring on the screw rod piece pushes inner teeth of the coupler to move forwards along the axial direction of the screw rod piece, the inner teeth of the coupler are meshed with the outer teeth of the coupler, the screw rod piece is locked, and therefore the target stopping height of the upper frame is locked;
when the lifting platform rises, anticlockwise rotation the crank drives lead screw spare rotates, makes energy storage attenuator coil of strip begins to release energy release, reduces and waves required power during the crank, lead screw spare rotates and makes it contracts on the horizontal direction to cut the fork mechanism, and makes the upper ledge rises, works as the upper ledge loosens when rising to the target location the sleeve, thrust spring promotes the coupler internal tooth is followed lead screw spare axial forward motion makes the coupler internal tooth with the meshing of coupler external tooth, locking lead screw spare, thereby the locking the upper ledge target stops the height.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the upper frame and the lower frame are arranged, the shearing fork mechanism is arranged between the upper frame and the lower frame, and the screw rod piece drives the shearing fork mechanism and the whole set of mechanism, so that the oil-free whole set of mechanism is ensured, and the oil-free requirement of an optical test in a space environment simulation test is met;
2. according to the invention, the scissor mechanism is arranged, and the platform locking coupler is arranged at the end part of the screw rod part for controlling the scissor mechanism to lift, so that the platform is ensured to be self-locked and stopped at any height;
3. according to the invention, the energy storage damper is arranged on the platform locking coupler in a matching manner, when the screw rod piece rotates, the damper steel coil in the energy storage damper begins to contract for energy storage, so that the upper frame is prevented from descending too fast to generate impact damage on a test piece, and when the screw rod piece rotates reversely, the damper steel coil begins to release energy to reduce the force required by shaking the crank, so that the crank is more labor-saving in shaking;
4. according to the invention, the thrust spring is arranged, and when the sleeve is loosened, the thrust spring pushes the inner teeth of the coupler to move forwards along the axial direction of the ball screw, so that the inner teeth of the coupler are meshed with the outer teeth of the coupler, and the screw piece is locked, thus the target staying height of the upper frame is locked, and the situation that the platform descends rapidly can not occur.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a first schematic structural diagram of an auxiliary lifting platform for a space environment simulation test according to the present invention;
FIG. 2 is a schematic structural diagram II of an auxiliary lifting platform for a space environment simulation test according to the present invention;
FIG. 3 is a partial schematic view I of an auxiliary lifting platform for a space environment simulation test according to the present invention;
FIG. 4 is a partial schematic view of a second auxiliary lifting platform for a space environment simulation test according to the present invention;
FIG. 5 is an exploded view of the accumulator damper of the present invention;
FIG. 6 is a schematic diagram of an external tooth structure of the coupler of the present invention;
FIG. 7 is a first schematic diagram of the structure of the inner teeth of the coupler of the present invention;
FIG. 8 is a second schematic structural view of the inner teeth of the coupler of the present invention;
reference numerals:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Fig. 1 is a first structural schematic diagram of an auxiliary lifting platform for a space environment simulation test, and fig. 2 is a second structural schematic diagram of an auxiliary lifting platform for a space environment simulation test, including an upper frame 1, a lower frame 3 and a scissors mechanism 2, two ends of the scissors mechanism 2 are respectively arranged on the upper frame 1 and the lower frame 3, a screw rod element 4 is arranged on the lower frame 3 in a penetrating manner, one end of the screw rod element 4 is arranged on the inner wall of the lower frame 3 in a penetrating manner through the scissors mechanism 2, and a crank 7 is arranged at one end of the screw rod element 4 arranged outside the lower frame 3. In the present embodiment, the screw member 4 is a ball screw.
Fig. 3 is a partial schematic view of an auxiliary lifting platform for a space environment simulation test, fig. 4 is a partial schematic view of an auxiliary lifting platform for a space environment simulation test, and the platform locking coupler 6 is further included, the platform locking coupler 6 includes a coupler outer tooth 601, a coupler inner tooth 602 and a push-pull assembly, the coupler outer tooth 601 and the coupler inner tooth 602 are sleeved on the lead screw piece 4, the coupler outer tooth 601 and the coupler inner tooth 602 are arranged between the lower frame 3 and the crank 7, one end of the push-pull assembly is arranged on the lead screw piece 4, an end of the push-pull assembly and the coupler inner tooth 602 are fixedly arranged, and the other end of the push-pull assembly is arranged on the crank 7.
The push-pull assembly drives the coupler inner teeth 602 and the coupler outer teeth 601 to be separately arranged, the screw rod piece 4 is rotatably arranged through rotation of the crank 7, the scissor fork mechanism 2 is arranged in a lifting mode through rotation of the screw rod piece 4, and the upper frame 1 and the lower frame 3 are arranged in a lifting mode through lifting of the scissor fork mechanism 2.
The scissor mechanism 2 comprises a first scissor rod 201 and a second scissor rod 202, the first scissor rod 201 and the second scissor rod 202 are arranged in a mutually crossed mode, one end of the first scissor rod 201 is hinged to the inner wall of the upper frame 1, the other end of the first scissor rod 201 is connected with the lower frame 3 through a second end sliding shaft 205, one end of the second scissor rod 202 is hinged to the inner wall of the lower frame 3, and the other end of the second scissor rod 202 is connected with the upper frame 1 through a first end sliding shaft 203; the first end sliding shaft 203 and the second end sliding shaft 205 are slidable in the lower frame 3 and the upper frame 1, respectively.
The screw rod 4 penetrates through the second end sliding shaft 205 to the inner wall of the lower frame 3, and the second end sliding shaft 205 can slide on the lower frame 3 along with the rotation of the screw rod 4, so that the scissors mechanism 2 can zoom in and out in the horizontal direction, and the upper frame 1 can be lifted and lowered. Two groups of scissors mechanisms 2 are arranged, and the two groups of scissors mechanisms 2 are connected through a middle pin shaft 204.
As shown in fig. 5, an explosion schematic diagram of the energy storage damper is provided, the energy storage damper 5 is sleeved on the lead screw component 4, the energy storage damper 5 comprises a protection box 501 and a damper steel coil 502, the protection box 501 is arranged between the lower frame 3 and the coupler internal teeth 602, the damper steel coil 502 is arranged in the protection box 501, and one end of the damper steel coil 502 is fixedly arranged on the lead screw component 4. The descending rotation direction of the upper frame 3 is the energy storage tightening direction of the damper steel coil 502, and meanwhile, the impact caused by the over-quick descending of the upper frame 1 can be reduced; when the upper frame 1 rises, the rotation direction of the screw rod piece 4 is the energy releasing direction of the damper steel coil 502, and the effect of saving the required torque force when the platform rises is achieved.
As shown in fig. 6, which is a schematic diagram of an external tooth structure of a coupler, the external tooth 601 of the coupler includes an upper cover, the upper cover is disposed on the protective box 501, a support is disposed on the upper cover, and the other end of the damper steel coil 502 is disposed in cooperation with the support. The coupler outer teeth 601 further comprise a rectangular fluted disc, and a plurality of rectangular teeth are circumferentially arranged on the rectangular fluted disc;
fig. 7 is a first schematic structural diagram of the inner teeth of the coupler, and fig. 8 is a second schematic structural diagram of the inner teeth of the coupler, where the inner teeth 602 of the coupler include a buckle disk, a plurality of rectangular inner teeth are circumferentially disposed on the inner wall of the buckle disk, the buckle disk is covered on a rectangular toothed disk, and the rectangular teeth and the rectangular inner teeth are mutually coupled.
A circular through hole is designed in the center of the coupler inner teeth 602, meanwhile, the lead screw piece 4 penetrates through the center through hole of the coupler inner teeth 602, and a rectangular key groove is formed in the center through hole, so that the coupler inner teeth 602 can horizontally move along the axial direction of the lead screw piece 4, the rotation between the coupler inner teeth 602 and the lead screw piece 4 is limited, and the coupler inner teeth 602 rotate along with the lead screw piece 4.
Be equipped with the column piece on coupler internal tooth 602, the column piece sets up on the terminal surface that the buckle dish was not equipped with the rectangle internal tooth, has seted up first recess on the lateral wall of column piece, and staple bolt 603 can be dismantled in the first recess internal fixation setting, has seted up the second recess on the terminal surface of column piece, and the cover is equipped with thrust spring 604 on the lead screw spare 4, and thrust spring 604's one end setting is in the second recess, and thrust spring 604's the other end corresponds crank 7 setting.
The platform locking coupler 6 further comprises a blocking piece 605 and a limiting bolt 606, the blocking piece 605 is arranged on the screw rod part 4 in a penetrating mode, the blocking piece 605 is arranged at the other end of the thrust spring 604 in a corresponding mode, the limiting bolt 606 is arranged on the screw rod part 4, and the other end face of the blocking piece 605 is arranged in a limiting mode through the limiting bolt 606.
The crank 7 adopts Z style of calligraphy structural design, and crank 7 includes stiff end, linkage segment and holds the end, and the stiff end with hold the end and pass through the linkage segment and be connected the setting, the stiff end sets up with the end fixing of lead screw spare 4. In this embodiment, the handle 7 is a hollow circular tube, and the end of the handle is provided with a guide slot for installing the wire puller 612, so that the wire puller 612 rotates along with the handle 7 and can move along the axial direction of the handle 7.
The push-pull assembly comprises a sleeve 608, a front push rod 609 and a rear push rod 610, the sleeve 608 is sleeved on the hand holding end, a rotating push ring 611 is arranged at one end of the sleeve 608 away from the connecting section, a hinge is arranged at one end of the sleeve 608 close to the connecting section, the hinge is connected with the front push rod 609, the front push rod 609 is connected with the rear push rod 610, and the rear push rod 610 is connected with the rotating push ring 611; the other side of the rotating push ring 611 is provided with a wire puller 612, a pull wire 607 is arranged on the wire puller 612, and the pull wire 607 is arranged from the rear push rod 610, the front push rod 609 and the connecting section to the detachable hoop 603 in sequence.
The working principle is as follows: when the lifting platform descends and the crank 7 needs to be rotated, a hand grips the crank sleeve 608, the front push rod 609 and the rear push rod 610 on the crank 7 sleeve 608 push the rotating push ring 611 to move backwards, the rotating push ring 611 pushes the wire puller 612 to move backwards, the wire puller 612 pulls the inner teeth 602 of the coupler to be separated from the outer teeth 601 of the coupler through the pull wire 607, and the lifting platform is unlocked. Clockwise rotation crank 7 drives lead screw 4 and rotates, 5 coil of strip of energy storage attenuator that set up on lead screw 4 begins to contract the energy storage, lead screw 4 rotates and makes scissors fork mechanism 2 extend on the horizontal direction, and make the frame 1 descend on the lift platform, when going up frame 1 and descend the target location, loosen sleeve 608, thrust spring 604 on lead screw 4 promotes coupler internal tooth 602 and moves forward along lead screw 4 axial, make coupler internal tooth 602 and coupler external tooth 601 meshing, lock lead screw 4, thereby frame 1 target stop height in the locking. The damper steel coil 502 also plays a role in buffering in the whole process, and the upper frame 1 is prevented from descending too fast to cause impact damage to a test piece.
When the lifting platform is lifted and the crank 7 needs to be rotated, a hand grips the crank sleeve 608, the front push rod 609 and the rear push rod 610 on the crank 7 sleeve 608 push the rotating push ring 611 to move backwards, the rotating push ring 611 pushes the wire puller 612 to move backwards, the wire puller 612 pulls the inner teeth 602 of the coupler to be separated from the outer teeth 601 of the coupler through the pull wire 607, and the lifting platform is unlocked. The crank 7 is rotated anticlockwise to drive the screw rod piece 4 to rotate, so that the steel coil of the energy storage damper 5 starts to release energy, the force required when the crank 7 is shaken is reduced, the screw rod piece 4 rotates to enable the scissors mechanism 2 to shrink in the horizontal direction, the upper frame 1 is enabled to ascend, the sleeve 608 is loosened when the upper frame 1 ascends to a target position, the thrust spring 604 pushes the inner teeth 602 of the coupler to move forwards along the axial direction of the screw rod piece 4, the inner teeth 602 of the coupler are enabled to be meshed with the outer teeth 601 of the coupler, the screw rod piece 4 is locked, and therefore the target stopping height of the upper frame 1 is locked.
In the ascending and descending processes, when a hand suddenly slides off the crank 7, the pull wire 607 loses the pulling force, the thrust spring 604 pushes the inner teeth 602 of the coupler to move forwards along the axial direction of the lead screw piece 4, so that the inner teeth 602 of the coupler are meshed with the outer teeth 601 of the coupler, the heights of the lead screw piece 4 and the platform are locked, and the upper frame 1 is prevented from falling down quickly to crush the test piece. Meanwhile, the damper steel coil 502 also plays a buffering role as a second protection.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. An auxiliary lifting platform for a space environment simulation test is characterized by comprising an upper frame (1), a lower frame (3) and a scissor mechanism (2), wherein two ends of the scissor mechanism (2) are respectively arranged on the upper frame (1) and the lower frame (3);
a screw rod piece (4) penetrates through the lower frame (3), and one end of the screw rod piece (4) penetrates through the scissor fork mechanism (2) and is arranged on the inner wall of the lower frame (3);
a crank (7) is arranged at one end of the screw rod piece (4) arranged outside the lower frame (3);
the platform locking coupler (6) comprises outer coupler teeth (601), inner coupler teeth (602) and a push-pull assembly, the outer coupler teeth (601) and the inner coupler teeth (602) are sleeved on the lead screw piece (4), the outer coupler teeth (601) and the inner coupler teeth (602) are arranged between the lower frame (3) and the crank (7), one end of the push-pull assembly is arranged on the lead screw piece (4), the end of the push-pull assembly and the inner coupler teeth (602) are fixedly arranged, and the other end of the push-pull assembly is arranged on the crank (7);
the push-pull assembly drives the coupler inner teeth (602) and the coupler outer teeth (601) to be arranged in a separated mode, the lead screw piece (4) is arranged in a rotating mode through rotation of the crank (7), the scissors mechanism (2) is arranged in a lifting mode through rotation of the lead screw piece (4), and the upper frame (1) and the lower frame (3) are arranged in a lifting mode through lifting of the scissors mechanism (2).
2. The auxiliary lifting platform for the space environment simulation test according to claim 1, wherein the scissor mechanism (2) comprises a first scissor rod (201) and a second scissor rod (202), the first scissor rod (201) and the second scissor rod (202) are arranged in a cross manner, one end of the first scissor rod (201) is hinged to the inner wall of the upper frame (1), the other end of the first scissor rod (201) is connected with the lower frame (3) through a second end sliding shaft (205), one end of the second scissor rod (202) is hinged to the inner wall of the lower frame (3), and the other end of the second scissor rod (202) is connected with the upper frame (1) through a first end sliding shaft (203); the screw rod piece (4) penetrates through the second end sliding shaft (205) to the inner wall of the lower frame (3); the two groups of scissors mechanisms (2) are arranged, and the two groups of scissors mechanisms (2) are connected through a middle pin shaft (204).
3. The auxiliary lifting platform for the space environment simulation test is characterized in that an energy storage damper (5) is sleeved on the screw rod piece (4), the energy storage damper (5) comprises a protection box (501) and a damper steel coil (502), the protection box (501) is arranged between the lower frame (3) and the coupler inner teeth (602), the damper steel coil (502) is arranged in the protection box (501), and one end of the damper steel coil (502) is fixedly arranged on the screw rod piece (4);
coupler external tooth (601) includes the upper cover, the upper cover sets up on protection box (501), cover on and be equipped with the pillar, the attenuator coil of strip (502) the other end with the pillar is mutually supported and is set up.
4. The auxiliary lifting platform for the space environment simulation test as recited in claim 3, wherein the outer coupler teeth (601) further comprise a rectangular toothed disc, a plurality of rectangular teeth being circumferentially disposed on the rectangular toothed disc; coupler internal tooth (602) are including the buckle dish, a plurality of rectangle internal teeth have been seted up to buckle dish inner wall circumference, the buckle dish cover is established on the rectangle fluted disc, the rectangle tooth with rectangle internal tooth intercoupling sets up.
5. The auxiliary lifting platform for the space environment simulation test is characterized in that a cylindrical block is arranged on the coupler inner teeth (602), the cylindrical block is arranged on the end face of the clamping disc, which is not provided with the rectangular inner teeth, a first groove is formed in the side wall of the cylindrical block, a detachable hoop (603) is fixedly arranged in the first groove, a second groove is formed in the end face of the cylindrical block, a thrust spring (604) is sleeved on the lead screw piece (4), one end of the thrust spring (604) is arranged in the second groove, and the other end of the thrust spring (604) corresponds to the crank (7).
6. The auxiliary lifting platform for the space environment simulation test is characterized in that the platform locking coupler (6) further comprises a blocking piece (605) and a limiting bolt (606), the blocking piece (605) is arranged on the screw rod piece (4) in a penetrating mode, the blocking piece (605) is arranged corresponding to the other end of the thrust spring (604), the limiting bolt (606) is arranged on the screw rod piece (4), and the other end face of the blocking piece (605) is arranged in a limiting mode through the limiting bolt (606).
7. The auxiliary lifting platform for the space environment simulation test is characterized in that the crank (7) is designed in a Z-shaped structure, the crank (7) comprises a fixed end, a connecting section and a hand-holding end, the fixed end and the hand-holding end are connected through the connecting section, and the fixed end and the end of the screw rod piece (4) are fixedly arranged.
8. The auxiliary lifting platform for the space environment simulation test of claim 7, wherein the push-pull assembly comprises a sleeve (608), a front push rod (609) and a rear push rod (610), the sleeve (608) is sleeved on the hand-held end, one end of the sleeve (608) far away from the connecting section is provided with a rotating push ring (611), one end of the sleeve (608) near the connecting section is provided with a hinge, the hinge is connected with the front push rod (609), the front push rod (609) is connected with the rear push rod (610), and the rear push rod (610) is connected with the rotating push ring (611);
the other side of rotating push ring (611) is equipped with wire grip (612), the installation is provided with acting as go-between (607) on wire grip (612), acting as go-between (607) loop through back push rod (610), preceding push rod (609), the linkage segment extremely can dismantle staple bolt (603) installation setting.
9. The auxiliary lifting platform for the space environment simulation test according to claim 1, wherein the screw member (4) is a ball screw.
10. The auxiliary lifting platform for the space environment simulation test is characterized in that when the crank handle (7) needs to be rotated, a front push rod (609) and a rear push rod (610) on a sleeve (608) of the crank handle (7) push a rotary push ring (611) to move backwards, the rotary push ring (611) pushes a wire puller (612) to move backwards, the wire puller (612) pulls an inner coupler tooth (602) to be separated from an outer coupler tooth (601) through a pull wire (607), and the lifting platform is unlocked;
when the lifting platform descends, the crank handle (7) is rotated clockwise to drive the screw rod piece (4) to rotate, a steel coil of an energy storage damper (5) arranged on the screw rod piece (4) begins to contract for energy storage, the screw rod piece (4) rotates to enable the scissors mechanism (2) to extend in the horizontal direction, so that the upper frame (1) of the lifting platform descends, when the upper frame (1) descends to a target position, the sleeve (608) is loosened, a thrust spring (604) on the screw rod piece (4) pushes the inner teeth (602) of the coupler to move forwards along the axial direction of the screw rod piece (4), the inner teeth (602) of the coupler are meshed with the outer teeth (601) of the coupler, the screw rod piece (4) is locked, and therefore the target stopping height of the upper frame (1) is locked;
when the lifting platform rises, anticlockwise rotation crank (7) drives lead screw spare (4) rotates, makes energy storage attenuator (5) coil of strip begins to release energy release, reduces and rocks required power during crank (7), lead screw spare (4) rotate and make it contracts on the horizontal direction to cut fork mechanism (2), and makes upper ledge (1) rises, works as upper ledge (1) loosens when rising to the target location sleeve (608), thrust spring (604) promote coupler internal tooth (602) are followed lead screw spare (4) axial forward motion makes coupler internal tooth (602) with coupler external tooth (601) meshing, locking lead screw spare (4), thereby locking upper ledge (1) target stops the height.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111424630.8A CN114249268B (en) | 2021-11-26 | 2021-11-26 | Auxiliary lifting platform for space environment simulation test |
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| CN202111424630.8A CN114249268B (en) | 2021-11-26 | 2021-11-26 | Auxiliary lifting platform for space environment simulation test |
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| CN114249268A true CN114249268A (en) | 2022-03-29 |
| CN114249268B CN114249268B (en) | 2024-03-29 |
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| CN114249268B (en) | 2024-03-29 |
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