CN114249268B - Auxiliary lifting platform for space environment simulation test - Google Patents
Auxiliary lifting platform for space environment simulation test Download PDFInfo
- Publication number
- CN114249268B CN114249268B CN202111424630.8A CN202111424630A CN114249268B CN 114249268 B CN114249268 B CN 114249268B CN 202111424630 A CN202111424630 A CN 202111424630A CN 114249268 B CN114249268 B CN 114249268B
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- coupler
- screw rod
- rod piece
- teeth
- crank
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- 238000004088 simulation Methods 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000010008 shearing Methods 0.000 claims abstract description 28
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000004146 energy storage Methods 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 12
- 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
- 230000001174 ascending effect Effects 0.000 description 1
- 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
Classifications
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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
-
- 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
Abstract
The invention provides an auxiliary lifting platform for a space environment simulation test, which belongs to the technical field of space environment simulation equipment of spacecrafts, and comprises an upper frame, a lower frame and a fork shearing mechanism, wherein two ends of the fork shearing mechanism are respectively arranged on the upper frame and the lower frame; a screw rod piece is arranged on the lower frame in a penetrating way, and one end of the screw rod piece penetrates through the shearing fork mechanism and is arranged on the inner wall of the lower frame; one end of the screw rod piece, which is arranged outside the lower frame, is provided with a crank; the platform locking coupler comprises coupler external teeth, coupler internal teeth and a push-pull assembly, the push-pull assembly drives the coupler internal teeth to be separated from the coupler external teeth, the screw rod piece rotates through rotation of the crank, the scissor mechanism is lifted through rotation of the screw rod piece, and the upper frame and the lower frame are lifted through lifting of the scissor mechanism. The invention meets the oilless requirement of the optical test in the space environment simulation test, and ensures that the platform stays in any height in a self-locking way.
Description
Technical Field
The invention relates to the technical field of space environment simulation equipment of space spacecrafts, in particular to an auxiliary lifting platform for a space environment simulation test.
Background
In order to meet the optical test under the thermal vacuum conditions 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, the position of the optical window is fixed, and the problem that the sensor cannot be aligned with the optical glass often occurs, so that the test is influenced. In order to meet the test requirements, the height of the platform for fixing the test piece needs to be adjustable, and stay at any height, and meanwhile, the whole set of platform mechanism needs to be clean and oilless because the optical test is extremely sensitive to oil stains.
According to the prior art, the Chinese patent publication No. CN109969434B discloses a lifting type heat sink assembly of a space environment simulator, which comprises a top heat sink, a detachable liquid inlet pipeline and a detachable liquid outlet pipeline, a fixed hoisting system, a lifting sling, an upper connecting device and a control system, wherein the upper part of the heat sink is hung below the lifting sling on the inner wall of an upper end socket of a container of the space environment simulator through a heat sink hanging point, the fixed hoisting system consists of an electric chain hoist and a mounting portal along with lifting of the lifting sling, the electric chain hoist is arranged on the top of the container through the mounting portal and drives the lifting sling to lift, and 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 patent technology has the above-mentioned related problems.
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 invention provides an auxiliary lifting platform for a space environment simulation test, which comprises an upper frame, a lower frame and a shearing fork mechanism, wherein two ends of the shearing fork mechanism are respectively arranged on the upper frame and the lower frame;
a screw rod piece is arranged on the lower frame in a penetrating way, and one end of the screw rod piece penetrates through the shearing fork mechanism and is arranged on the inner wall of the lower frame;
one end of the screw rod piece, which is arranged outside the lower frame, is provided with a crank;
the platform locking coupler comprises coupler external teeth, coupler internal teeth and a push-pull assembly, wherein the coupler external teeth and the coupler internal teeth are sleeved on the screw rod piece, the coupler external teeth and the coupler internal teeth are arranged between the lower frame and the crank, one end of the push-pull assembly is arranged on the screw rod piece, the end part of the push-pull assembly is fixedly arranged with the coupler internal teeth, and the other end of the push-pull assembly is arranged on the crank;
the push-pull assembly drives the inner teeth of the coupler to be separated from the outer teeth of the coupler, the screw rod piece is rotated and arranged through rotation of the crank, the fork shearing mechanism is lifted and arranged through rotation of the screw rod piece, and the upper frame and the lower frame are lifted and arranged through lifting of the fork shearing mechanism.
In some embodiments, the fork mechanism includes a first fork rod and a second fork rod, where the first fork rod and the second fork rod are mutually crossed, one end of the first fork rod is hinged on the inner wall of the upper frame, the other end of the first fork rod is connected with the lower frame through a second end sliding shaft, one end of the second fork rod is hinged on the inner wall of the lower frame, and the other end of the second fork rod is connected with the upper frame through a first end sliding shaft; the screw rod piece penetrates through the second end sliding shaft to the inner wall of the lower frame; the two groups of the shearing fork mechanisms are connected through the middle pin shaft.
In some embodiments, the screw rod piece is sleeved with an energy storage damper, 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 external teeth of the coupler comprise an upper cover, the upper cover is arranged on the protection box, a support column is arranged on the upper cover, and the other end of the damper steel coil is mutually matched with the support column.
In some embodiments, the external teeth of the coupler further comprise rectangular fluted discs, and a plurality of rectangular teeth are circumferentially arranged on the rectangular fluted discs; the inner teeth of the coupler comprise a buckle disk, a plurality of rectangular inner teeth are circumferentially formed in the inner wall of the buckle disk, the buckle disk is covered on the rectangular fluted disk, and the rectangular teeth and the rectangular inner teeth are mutually coupled.
In some embodiments, the inner teeth of the coupler are provided with columnar blocks, the columnar blocks are arranged on the end face, which is not provided with rectangular inner teeth, of the buckle disc, the side wall of each columnar block is provided with a first groove, a detachable hoop is fixedly arranged in each first groove, the end face of each columnar block is provided with a second groove, the screw rod piece is sleeved with a thrust spring, one end of each thrust spring is arranged in each second groove, and the other end of each thrust spring corresponds to the corresponding crank.
In some embodiments, the platform locking coupler further comprises a baffle and a limiting plug, the baffle is arranged on the screw rod part in a penetrating manner, the baffle is arranged corresponding to the other end of the thrust spring, the limiting plug is arranged on the screw rod part, and the other end face of the baffle is arranged in a limiting manner through the limiting plug.
In some embodiments, the crank adopts Z style of calligraphy structural design, the crank includes stiff end, linkage segment and holds the end, the stiff end with hold the end and pass through the linkage segment is connected and is set up, the stiff end with the tip fixed setting of lead screw spare.
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 arranged at one end of the sleeve, which is far away from the connecting section, a hinge is arranged at one end of the sleeve, which is near to the connecting section, the hinge is connected with the front push rod, the front push rod is connected with the rear push rod, and the rear push rod is connected with the rotating push ring;
the other side of the rotary push ring is provided with a wire stretcher, a wire stretcher is arranged on the wire stretcher, and the wire stretcher sequentially passes through the rear push rod, the front push rod and the connecting section to the detachable hoop.
In some embodiments, the screw member employs a ball screw.
In some embodiments, when the crank needs to be rotated, a front push rod and a rear push rod on the crank sleeve push a rotary push ring to move backwards, the rotary push ring pushes a wire puller to move backwards, the wire puller pulls inner teeth of a coupler to be separated from outer teeth of the coupler through a wire puller, and the lifting platform is unlocked;
when the lifting platform descends, the crank is rotated clockwise to drive the screw rod piece to rotate, the energy storage damper steel coil arranged on the screw rod piece starts to shrink and store energy, the screw rod piece rotates to enable the scissor mechanism to extend in the horizontal direction, the lifting platform upper frame descends, when the upper frame descends to a target position, the sleeve is loosened, the thrust spring on the screw rod piece pushes the 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, and the screw rod piece is locked, so that the target stay height of the upper frame is locked;
when the lifting platform ascends, the crank is rotated anticlockwise to drive the screw rod piece to rotate, so that the energy storage damper steel coil starts to release energy, the force required by shaking the crank is reduced, the screw rod piece rotates to enable the scissor mechanism to shrink in the horizontal direction, the upper frame ascends, the sleeve is loosened when the upper frame ascends to a target position, the thrust spring pushes the 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, and the screw rod piece is locked, so that the target stay height of the upper frame is locked.
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 shearing fork mechanism is driven by the screw rod piece, so that the whole set of mechanism is free of oil, and the oil-free requirement of an optical test in a space environment simulation test is met;
2. according to the invention, the shearing fork mechanism is arranged, and the platform locking coupler is arranged at the end part of the screw rod piece for controlling the shearing fork mechanism to lift, so that the self-locking and staying of the platform at any height are ensured;
3. according to the invention, the energy storage damper is arranged on the platform locking coupler in a matching way, when the screw rod piece rotates, the damper steel coil in the energy storage damper starts to shrink and store energy, so that the upper frame is prevented from falling too fast to impact damage the test piece, and when the screw rod piece rotates reversely, the damper steel coil starts to release energy, so that the force required by shaking the crank is reduced, and the crank is more labor-saving;
4. according to the invention, the thrust spring is arranged, and after 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 rod piece is locked, so that the target stay height of the upper frame is locked, and the condition that the platform drops rapidly is avoided.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of an auxiliary lifting platform for a space environment simulation test according to the present invention;
FIG. 2 is a schematic diagram II of an auxiliary lifting platform for a space environment simulation test according to the present invention;
FIG. 3 is a schematic view of a portion of an auxiliary lift platform for use in a space environment simulation test according to the present invention;
FIG. 4 is a schematic diagram II of a portion of an auxiliary lift platform for use in a space environment simulation test according to the present invention;
FIG. 5 is an exploded schematic view of the energy storage damper of the present invention;
FIG. 6 is a schematic diagram of the external tooth structure of the coupler according to the present invention;
FIG. 7 is a schematic diagram of the internal teeth of the coupler of the present invention;
FIG. 8 is a schematic diagram of the internal 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 present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Fig. 1 is a schematic structural diagram of an auxiliary lifting platform for a space environment simulation test, fig. 2 is a schematic structural diagram of an auxiliary lifting platform for a space environment simulation test, and the auxiliary lifting platform comprises 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 is arranged on the lower frame 3 in a penetrating manner, one end of the screw rod piece 4 penetrates through the scissor mechanism 2 and is arranged on the inner wall of the lower frame 3, and one end of the screw rod piece 4 arranged outside the lower frame 3 is provided with a crank 7. In the present embodiment, the screw member 4 employs a ball screw.
Fig. 3 is a schematic diagram of an auxiliary lifting platform for a space environment simulation test, fig. 4 is a schematic diagram of an auxiliary lifting platform for a space environment simulation test, and the auxiliary lifting platform further comprises a platform locking coupler 6, wherein the platform locking coupler 6 comprises coupler external teeth 601, coupler internal teeth 602 and a push-pull component, the coupler external teeth 601 and the coupler internal teeth 602 are sleeved on the screw rod piece 4, the coupler external teeth 601 and the coupler internal teeth 602 are arranged between the lower frame 3 and the crank 7, one end of the push-pull component is arranged on the screw rod piece 4, the end of the push-pull component is fixedly arranged with the coupler internal teeth 602, and the other end of the push-pull component is arranged on the crank 7.
The push-pull assembly drives the coupler inner teeth 602 to be separated from the coupler outer teeth 601, the screw rod piece 4 is rotated by the rotation of the crank 7, the scissor mechanism 2 is lifted by the rotation of the screw rod piece 4, and the upper frame 1 and the lower frame 3 are lifted by the lifting of the scissor mechanism 2.
The scissors mechanism 2 comprises a first scissors rod 201 and a second scissors rod 202, wherein the first scissors rod 201 and the second scissors rod 202 are arranged in a crossing manner, one end of the first scissors rod 201 is hinged to the inner wall of the upper frame 1, the other end of the first scissors rod 201 is connected with the lower frame 3 through a second end sliding shaft 205, one end of the second scissors rod 202 is hinged to the inner wall of the lower frame 3, and the other end of the second scissors 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 allowed to slide in the lower frame 3 and the upper frame 1, respectively.
The screw member 4 passes 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 member 4, so that the scissor mechanism 2 is scaled in the horizontal direction, and the upper frame 1 is lifted. The two groups of the shearing fork mechanisms 2 are arranged, and the two groups of the shearing fork mechanisms 2 are connected and arranged through the middle pin shaft 204.
As shown in fig. 5, which is an explosion schematic diagram of an energy storage damper, the screw rod member 4 is sleeved with the energy storage damper 5, 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 inner teeth 602 of the coupler, 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 member 4. The descending rotation direction of the upper frame 3 is the direction in which the damper steel coil 502 tightens up and stores energy, and meanwhile, the impact caused by the fact that the upper frame 1 descends too fast can be reduced; when the upper frame 1 is lifted, the rotation direction of the screw rod piece 4 is the releasing energy direction of the damper steel coil 502, and the effect of saving the torsion force required by lifting the platform is achieved.
As shown in fig. 6, the outer teeth 601 of the coupler include an upper cover, which is disposed on the protection box 501 and provided with a support post, and the other end of the damper steel coil 502 is matched with the support post. The external teeth 601 of the coupler further comprise rectangular fluted discs, and a plurality of rectangular teeth are circumferentially arranged on the rectangular fluted discs;
as shown in fig. 7, fig. 8 is a schematic diagram of an internal tooth of a coupler, and as shown in fig. 8, an internal tooth 602 of the coupler includes a snap disc, a plurality of rectangular internal teeth are circumferentially formed on an inner wall of the snap disc, the snap disc is covered on a rectangular fluted disc, and the rectangular teeth and the rectangular internal teeth are mutually coupled.
The center of the coupler internal teeth 602 is designed with a circular through hole, meanwhile, the screw rod piece 4 passes through the center through hole of the coupler internal teeth 602, and a rectangular key slot is formed in the center through hole, so that the coupler internal teeth 602 can horizontally move along the axial direction of the screw rod piece 4, rotation between the coupler internal teeth 602 and the screw rod piece 4 is limited, and the coupler internal teeth 602 rotate along with the screw rod piece 4.
Be equipped with the columnar block on the coupler internal tooth 602, the columnar block sets up on the buckle dish is equipped with the terminal surface of rectangle internal tooth, has seted up first recess on the lateral wall of columnar block, and first recess internal fixation sets up can dismantle staple bolt 603, has seted up the second recess on the terminal surface of columnar block, and the cover is equipped with thrust spring 604 on the lead screw piece 4, and thrust spring 604's one end sets up in the second recess, and thrust spring 604's the other end corresponds crank 7 setting.
The platform locking coupler 6 further comprises a baffle 605 and a limiting plug 606, wherein the baffle 605 is arranged on the screw rod piece 4 in a penetrating mode, the baffle 605 is arranged corresponding to the other end of the thrust spring 604, the limiting plug 606 is arranged on the screw rod piece 4, and the other end face of the baffle 605 is arranged in a limiting mode through the limiting plug 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 passes through the linkage segment with holding the end and connects the setting, and the stiff end sets up with the tip fixation of lead screw piece 4. In this embodiment, the holding end of the crank 7 is a hollow circular tube, and the tail end of the holding end is provided with a guide groove for installing the wire puller 612, so that the wire puller 612 rotates along with the holding end of the crank 7 and can move along the axial direction of the holding end of the crank 7.
The push-pull assembly comprises a sleeve 608, a front push rod 609 and a rear push rod 610, wherein the sleeve 608 is sleeved on the hand-holding end, a rotary push ring 611 is arranged at one end of the sleeve 608, which is far away from the connecting section, a hinge is arranged at one end of the sleeve 608, which is 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 rotary push ring 611; the other side of the rotary push ring 611 is provided with a wire stretcher 612, a wire stretcher 607 is arranged on the wire stretcher 612, and the wire stretcher 607 is arranged to be connected to the detachable hoop 603 through a rear push rod 610, a front push rod 609 and a connecting section in sequence.
Working principle: when the lifting platform descends, when the crank handle 7 needs to be rotated, the crank handle sleeve 608 is held by hand, the front push rod 609 and the rear push rod 610 on the crank handle 7 sleeve 608 push the rotary push ring 611 to move backwards, the rotary push ring 611 pushes the wire puller 612 to move backwards, the wire puller 612 pulls the coupler inner teeth 602 to be separated from the coupler outer teeth 601 through the wire puller 607, and the lifting platform is unlocked. The crank 7 is rotated clockwise to drive the screw rod 4 to rotate, the steel coil of the energy storage damper 5 arranged on the screw rod 4 starts to shrink and store energy, the screw rod 4 rotates to enable the scissor mechanism 2 to extend in the horizontal direction, the upper frame 1 of the lifting platform descends, when the upper frame 1 descends to a target position, the sleeve 608 is loosened, the thrust spring 604 on the screw rod 4 pushes the coupler inner teeth 602 to move forwards along the axial direction of the screw rod 4, the coupler inner teeth 602 are meshed with the coupler outer teeth 601, and the screw rod 4 is locked, so that the target stay height of the upper frame 1 is locked. The damper steel coil 502 also plays a role in buffering in the whole process, and prevents the upper frame 1 from falling too fast to generate impact damage to the test piece.
When the lifting platform rises, the crank sleeve 608 is held by hand when the crank 7 needs to be rotated, the front push rod 609 and the rear push rod 610 on the crank 7 sleeve 608 push the rotary push ring 611 to move backwards, the rotary push ring 611 pushes the wire puller 612 to move backwards, the wire puller 612 pulls the coupler inner teeth 602 to be separated from the coupler outer teeth 601 through the wire puller 607, and the lifting platform is unlocked. The crank 7 is rotated anticlockwise to drive the screw rod 4 to rotate, so that the steel coil of the energy storage damper 5 starts to release energy, the force required for shaking the crank 7 is reduced, the screw rod 4 rotates to enable the scissor mechanism 2 to shrink in the horizontal direction, the upper frame 1 is lifted, the sleeve 608 is loosened when the upper frame 1 is lifted to a target position, the thrust spring 604 pushes the coupler inner teeth 602 to move forwards along the axial direction of the screw rod 4, the coupler inner teeth 602 are meshed with the coupler outer teeth 601, and the screw rod 4 is locked, so that the target stay height of the upper frame 1 is locked.
During the ascending and descending processes, when the hand suddenly slides from the crank 7, the pull wire 607 loses the pulling force, the pushing force spring 604 pushes the coupler inner teeth 602 to move forward along the axial direction of the screw rod 4, so that the coupler inner teeth 602 are meshed with the coupler outer teeth 601, the height of the screw rod 4 and the platform is locked, and the upper frame 1 is prevented from falling down quickly and injuring the test piece by smashing. Meanwhile, the damper steel coil 502 also plays a role of buffering and serves as a second protection.
In the description of the present application, it should 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 the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (7)
1. The auxiliary lifting platform for the space environment simulation test is characterized by comprising an upper frame (1), a lower frame (3) and a shearing fork mechanism (2), wherein two ends of the shearing fork mechanism (2) are respectively arranged on the upper frame (1) and the lower frame (3);
a screw rod piece (4) is arranged on the lower frame (3) in a penetrating manner, and one end of the screw rod piece (4) penetrates through the scissor mechanism (2) and is arranged on the inner wall of the lower frame (3);
one end of the screw rod piece (4) which is arranged outside the lower frame (3) is provided with a crank (7);
the novel lifting device comprises a lifting device, and is characterized by further comprising a platform locking coupler (6), wherein the platform locking coupler (6) comprises coupler external teeth (601), coupler internal teeth (602) and a push-pull assembly, the coupler external teeth (601) and the coupler internal teeth (602) are sleeved on a screw rod piece (4), the coupler external teeth (601) and the coupler internal teeth (602) are arranged between a lower frame (3) and a crank (7), one end of the push-pull assembly is arranged on the screw rod piece (4), the end part of the push-pull assembly is fixedly arranged with the coupler internal teeth (602), and the other end of the push-pull assembly is arranged on the crank (7);
the push-pull assembly drives the inner teeth (602) of the coupler and the outer teeth (601) of the coupler to be separated, the screw rod piece (4) is rotationally arranged through rotation of the crank (7), the scissor mechanism (2) is lifted through rotation of the screw rod piece (4), and the upper frame (1) and the lower frame (3) are lifted through lifting of the scissor mechanism (2);
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 inner teeth (602) of the coupler, 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);
the external teeth (601) of the coupler comprise an upper cover, the upper cover is arranged on the protection box (501), a support column is arranged on the upper cover, and the other end of the damper steel coil (502) is mutually matched with the support column;
the external teeth (601) of the coupler further comprise rectangular fluted discs, and a plurality of rectangular teeth are circumferentially arranged on the rectangular fluted discs; the coupler internal teeth (602) comprise buckle discs, a plurality of rectangular internal teeth are circumferentially arranged on the inner walls of the buckle discs, the buckle discs are covered on the rectangular fluted disc, and the rectangular teeth and the rectangular internal teeth are mutually coupled;
be equipped with column piece on coupler internal tooth (602), column piece sets up on the buckle dish is not equipped with the terminal surface of rectangle internal tooth, first recess has been seted up on the lateral wall of column piece, first recess internal fixation sets up can dismantle staple bolt (603), the second recess has been seted up on the terminal surface of column piece, the cover is equipped with thrust spring (604) on lead screw piece (4), thrust spring (604) one end sets up in the second recess, thrust spring (604) the other end corresponds crank (7) setting.
2. The auxiliary lifting platform for the space environment simulation test according to claim 1, wherein the shearing mechanism (2) comprises a first shearing rod (201) and a second shearing rod (202), the first shearing rod (201) and the second shearing rod (202) are arranged in a mutually crossed mode, one end of the first shearing rod (201) is hinged to the inner wall of the upper frame (1), the other end of the first shearing rod (201) is connected with the lower frame (3) through a second end sliding shaft (205), one end of the second shearing rod (202) is hinged to the inner wall of the lower frame (3), and the other end of the second shearing 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 the shearing fork mechanisms (2) are arranged, and the two groups of the shearing fork mechanisms (2) are connected through the middle pin shaft (204).
3. The auxiliary lifting platform for the space environment simulation test according to claim 1, wherein the platform locking coupler (6) further comprises a baffle plate (605) and a limiting plug pin (606), the baffle plate (605) is arranged on the screw rod piece (4) in a penetrating mode, the baffle plate (605) is arranged corresponding to the other end of the thrust spring (604), the limiting plug pin (606) is arranged on the screw rod piece (4), and the other end face of the baffle plate (605) is arranged in a limiting mode through the limiting plug pin (606).
4. The auxiliary lifting platform for the space environment simulation test according to claim 3, wherein the crank (7) adopts a Z-shaped structural design, the crank (7) 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 part of the screw rod piece (4) are fixedly arranged.
5. The auxiliary lifting platform for the space environment simulation test according to claim 4, 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, a rotary push ring (611) is arranged at one end, far away from the connecting section, of the sleeve (608), a hinge is arranged at one end, close to the connecting section, of the sleeve (608), 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 rotary push ring (611);
the other side of the rotary push ring (611) is provided with a wire stretcher (612), a wire stretcher (607) is arranged on the wire stretcher (612), and the wire stretcher (607) sequentially passes through the rear push rod (610), the front push rod (609) and the connecting section to the detachable anchor ear (603) are arranged.
6. Auxiliary lifting platform for a simulation test of a space environment according to claim 1, characterized in that the screw member (4) employs a ball screw.
7. The auxiliary lifting platform for the space environment simulation test according to claim 5, wherein when the crank (7) needs to be rotated, a front push rod (609) and a rear push rod (610) on a sleeve (608) of the crank (7) push a rotary push ring (611) to move backwards, the rotary push ring (611) pushes a wire stretcher (612) to move backwards, and the wire stretcher (612) pulls coupler inner teeth (602) to be separated from coupler outer teeth (601) through a wire stretcher (607), so that the lifting platform is unlocked;
when the lifting platform descends, the crank (7) is rotated clockwise to drive the screw rod piece (4) to rotate, a steel coil of the energy storage damper (5) arranged on the screw rod piece (4) starts to shrink and store energy, the screw rod piece (4) rotates to enable the scissor mechanism (2) to extend in the horizontal direction, the lifting platform upper frame (1) descends, when the upper frame (1) descends to a target position, the sleeve (608) is loosened, the thrust spring (604) on the screw rod piece (4) pushes the coupler inner teeth (602) to move forwards along the axial direction of the screw rod piece (4), so that the coupler inner teeth (602) are meshed with the coupler outer teeth (601), and the screw rod piece (4) is locked, so that the target stay height of the upper frame (1) is locked;
when the lifting platform ascends, the crank (7) rotates anticlockwise to drive the screw rod piece (4) to rotate, so that the energy storage damper (5) starts to release energy from the steel coil, the force required by shaking the crank (7) is reduced, the screw rod piece (4) rotates to enable the scissor mechanism (2) to shrink in the horizontal direction, the upper frame (1) ascends, the sleeve (608) is loosened when the upper frame (1) ascends to a target position, the thrust spring (604) pushes the coupler inner teeth (602) to move forwards along the axial direction of the screw rod piece (4), the coupler inner teeth (602) are meshed with the coupler outer teeth (601), and the screw rod piece (4) is locked, so that the target stay height of the upper frame (1) is locked.
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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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| CN114249268B true CN114249268B (en) | 2024-03-29 |
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| CN114249268A (en) | 2022-03-29 |
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