CN211139705U - Rat tail suspension device based on weightlessness status simulation - Google Patents
Rat tail suspension device based on weightlessness status simulation Download PDFInfo
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- CN211139705U CN211139705U CN201921380575.5U CN201921380575U CN211139705U CN 211139705 U CN211139705 U CN 211139705U CN 201921380575 U CN201921380575 U CN 201921380575U CN 211139705 U CN211139705 U CN 211139705U
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- silica gel
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- 238000004088 simulation Methods 0.000 title claims abstract description 27
- 239000000725 suspension Substances 0.000 title claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 48
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 239000000741 silica gel Substances 0.000 claims abstract description 44
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 44
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000017074 necrotic cell death Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract description 2
- 241000700159 Rattus Species 0.000 description 40
- 238000010586 diagram Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- 210000001124 body fluid Anatomy 0.000 description 3
- 239000010839 body fluid Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000028327 secretion Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 238000010171 animal model Methods 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000008468 bone growth Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 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
- 208000014674 injury Diseases 0.000 description 1
- 230000005486 microgravity Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a rat tail suspension device based on weightless state simulation, which comprises a fixing mechanism and a loading mechanism which are arranged in a cage body; the fixing mechanism comprises a tail fixing shaft, a first soft silica gel sleeve and a metal sleeve which are sequentially sleeved from inside to outside, a spiral through groove is formed in the outer side wall surface of the tail fixing shaft in the circumferential direction of the tail fixing shaft, and the loading mechanism comprises a swinging connecting rod shaft, a telescopic bearing shaft and a tail end fixing ring; the swing type connecting rod shaft is movably fixed at the top of the metal sleeve, the telescopic bearing shaft is horizontally arranged below the swing type connecting rod shaft, and the tail end fixing ring is a ring body fixed at the top of a supporting block of the telescopic bearing shaft and is arranged in a mode that the axis of the ring body is vertical to the side wall of the metal sleeve; the device simple structure, reasonable in design, practicality are strong, and the effectual rat tail of having avoided causes damage or necrosis because of mechanical extrusion force or airtight reason.
Description
Technical Field
The utility model relates to a weightless state simulation experiment device technical field, in particular to rat afterbody hanging device based on weightless state simulation.
Background
The development of science and technology promotes the world to explore space, and astronauts who are in the space microgravity environment for a long time suffer from very serious osteoporosis due to the aggravated loss of bone and the abnormal generation of bone calcium, so that the astronauts can not walk normally or even stand by themselves after returning to the earth for a long time. Therefore, in order to better solve the problem, the bone growth state of an astronaut in a weightless state in space is simulated by adopting an animal model for simulating the weightless state on the ground, and the research is an effective means and has stronger practical application significance.
Rat tail suspends experimental apparatus in midair is the means that utilizes the rat to carry out weightlessness experiment simulation, however, current experimental apparatus mostly relies on the viscidity of sticky tape to seal the rat tail and pastes, along with hanging the extension of time, the secretion of rat body fluid and the weakening of sticky tape stickness, the rat tail easily drops and leads to the experiment failure, probably leads to the necrosis of rat tail because of sealing tension. From previous experimental models, it can be found that the smoothness of the tail of the rat and the uncontrollable force during struggling cause the tail to fall off or even necrose due to sealing and wrapping or mechanical hard impact, and the occurrence of the condition undoubtedly declares the failure of the experiment. Therefore, it is necessary to adopt a proper mechanical structure for the physiological characteristics of the rat tail to provide a suspension device that is safe and firm and can monitor the suspension state in real time, so as to ensure the validity of experimental data.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an overcome thereby the rat afterbody hanging device based on weightless state simulation that current device defect was effectively carried out safety, firm fixed to the rat afterbody.
Therefore, the utility model discloses technical scheme as follows:
a rat tail suspension device based on weightlessness status simulation comprises a fixing mechanism and a loading mechanism which are arranged in a cage body; wherein the content of the first and second substances,
the fixing mechanism comprises a tail fixing shaft, a first soft silica gel sleeve and a metal sleeve which are sequentially sleeved from inside to outside; the tail fixing shaft is of a cylindrical structure, a spiral through groove is formed in the outer side wall surface of the tail fixing shaft from the bottom end to the top end in the circumferential direction of the tail fixing shaft, and the groove width of the spiral through groove is gradually reduced from the bottom end to the top end; the metal sleeve is of a cylinder structure with an open top, and a through hole matched with the outer diameter of the tail fixing shaft is formed in the bottom surface of the metal sleeve; the first soft silica gel sleeve is fixed on the inner wall of the metal sleeve, the outer diameter of the first soft silica gel sleeve is consistent with the inner diameter of the metal sleeve, and the inner diameter of the first soft silica gel sleeve is matched with the outer diameter of the tail fixing shaft, so that the tail fixing shaft can be tightly sleeved on the inner side of the first soft silica gel sleeve;
the loading mechanism comprises a swing type connecting rod shaft, a telescopic bearing shaft and a tail end fixing ring; the swing type connecting rod shaft is composed of two vertical rods and a cylindrical cross rod, two ends of the cylindrical cross rod are respectively fixed on the side walls of the top ends of the two vertical rods, and the two vertical rods are respectively movably fixed on the top of the metal sleeve through bolts, so that the two vertical rods and the outer wall of the metal sleeve can be adjusted to form any included angle; the telescopic bearing shaft is composed of an outer sleeve, a push rod and a supporting block, wherein the outer sleeve is horizontally arranged, one end of the outer sleeve is fixed on the outer wall of the metal sleeve, the push rod is horizontally arranged in the outer sleeve, and the supporting block is vertically fixed at the outer side end of the push rod; the tail end fixing ring is a ring body fixed at the top of the supporting block of the telescopic bearing shaft, the ring body is arranged in a mode that the axis of the ring body is perpendicular to the side wall of the metal sleeve, and a second soft silica gel sleeve with the inner diameter matched with the outer diameter of the tail end is arranged on the inner wall of the ring body.
Furthermore, the rat tail suspension device based on weightlessness status simulation comprises a monitoring alarm mechanism, wherein the monitoring alarm mechanism comprises a tension sensor, a data recorder and an alarm device which are sequentially connected; the tension sensor is arranged in the cage body, the sensitive bridge part at the bottom end of the tension sensor is fixed in the middle of a pull rope, and two ends of the pull rope are respectively and symmetrically fixed on the top surface of the metal sleeve; the data recorder and the alarm device are arranged on the outer side of the cage body.
Further, the metal sleeve is split into two semicircular sleeves, and one side between two semicircular sleeves is connected through hinge activity, the opposite side is provided with many pairs of otic placodes respectively on the outer wall that two semicircular sleeves meet the department symmetrically, makes two semicircular sleeve's opposite side through set up respectively every bolt on the otic placode and can dismantle fixed as an organic whole with bolt matched with nut.
Furthermore, the groove walls on two sides of the groove opening of the spiral through groove slightly extend to opposite sides to form a limiting strip, so that the width of the groove opening of the spiral through groove is slightly smaller than the width of the inner side of the groove opening.
Furthermore, a plurality of mutually communicated air holes are uniformly distributed on the tail fixing shaft, the first soft silica gel sleeve and the metal sleeve respectively; wherein, the aperture of the air holes is 3-5 mm, and the aperture ratio is 15-20%.
Furthermore, the tail fixing shaft is made of hard silica gel with the hardness of 50D-60D, and the first soft silica gel sleeve and the second soft silica gel sleeve are both made of soft silica gel with the hardness of 20A-30A.
Furthermore, a polyurethane rubber layer is coated on the surface of the cross rod of the oscillating connecting rod shaft, so that the surface of the oscillating connecting rod shaft has certain roughness.
Furthermore, a fixing strip is vertically fixed on the metal sleeve below the swing type connecting rod shaft 5, four slots are arranged on the outer side wall surface of the metal sleeve at intervals from bottom to top, and the size of each slot is matched with that of the outer sleeve of the telescopic type bearing shaft 6, so that the outer sleeve can be inserted and fixed in any slot.
Furthermore, a sliding rod is horizontally arranged at the top of the cage body, a pull ring capable of freely sliding on the sliding rod is sleeved on the sliding rod, and the top end of the tension sensor is fixed on the pull ring through a connecting piece, so that the tension sensor can reciprocate on the cage body along the axial direction of the sliding rod.
Furthermore, the tail end fixing ring is composed of a first semicircular ring body, a second semicircular ring body and a locking mechanism; one end of the first semicircular ring body is connected with one end of the second semicircular ring body through a rotating pin to form an annular body; an inner rack formed by a plurality of unidirectional teeth is processed on the outer side wall surface of the other end of the first semicircular ring body, and a locking mechanism setting plate is formed by extending the other end of the second semicircular ring body outwards; the locking mechanism is composed of a fixed strip, an outer rack, a locking block and a clamp spring, one end of the outer rack is movably fixed on a locking mechanism setting plate through a rotating pin, the other end of the outer rack is provided with a plurality of one-way teeth matched with the inner rack, the one-way teeth on the inner rack can be meshed with the one-way teeth at the end of the outer rack in an initial state, and a convex block is formed at the end part of the outer rack positioned at the one-way teeth setting end in an axial extending manner; the locking block i is movably fixed on a locking mechanism setting plate close to the unidirectional tooth side of the outer rack through a rotating pin, so that the locking block i can push a convex block on the outer rack to remove the meshing relation between the outer rack and the inner rack in the rotating process; the fixed strip is parallel to the outer rack and is fixed on the locking mechanism setting plate, and the jump ring sets up between fixed strip and outer rack with the state of compression, makes the locking piece rotate to keeping away from lug position department, and outer rack resumes under the spring action of jump ring to and the inner rack is engaged with again.
Further, the interval between the adjacent teeth on the inner rack and the outer rack of the tail end fixing ring is 2-2.5 mm, so that when the teeth on the inner rack and the outer rack move relatively for one time, the inner diameter of the corresponding ring body changes by 0.5-0.7 mm.
Compared with the prior art, the rat tail suspension device based on the weightless state simulation has the advantages of simple structure, reasonable design, simple operation and strong practicability when being used for rat research; the fixing mechanism of the device buffers mechanical force through soft and hard silica gel, so that fracture or necrosis caused by unsmooth blood circulation of the tail of a rat due to too direct mechanical extrusion force is effectively avoided; the air permeability of the through hole ensures that the rat tail can secrete body fluid to a certain degree and can be dried quickly, and the tail is prevented from being damaged by the secretion of the body fluid under a sealing condition; the loading and fastening mechanism of the device utilizes the force application characteristic of winding and fixing and the reverse self-locking characteristic of the ring body, thereby effectively ensuring the fastening duration and greatly reducing the possibility of the falling of the tail of the rat; the monitoring alarm mechanism of the device can monitor and record data in real time, and greatly ensures the validity of experimental data in an experimental period; in addition, the model of the device is suitable for the tail suspension of other animals, has good development value, and has good popularization and application value.
Drawings
Fig. 1 is a cross-sectional view of a rat tail suspension device based on weightless state simulation according to the present invention;
fig. 2 is a schematic structural diagram of a metal sleeve of a rat tail suspension device based on weightless state simulation according to the present invention;
fig. 3(a) is a schematic structural diagram of a tail fixing shaft of a rat tail suspension device based on weightless state simulation according to the present invention;
fig. 3(b) is a schematic cross-sectional structure view of the tail fixing shaft of the rat tail suspension device based on weightless state simulation of the present invention;
fig. 4 is a schematic structural diagram of a tail end fixing ring of the rat tail suspension device based on weightless state simulation according to the present invention;
fig. 5 is a schematic structural diagram of the tension sensor arranged in the cage body of the rat tail suspension device based on weightless state simulation of the present invention.
Detailed Description
The present invention will be further described with reference to the following drawings and specific examples, but the following examples are by no means limiting the present invention.
The rat tail suspension device based on weightlessness status simulation comprises a fixing mechanism, a loading mechanism and a monitoring alarm mechanism which are arranged in a cage body 11.
As shown in fig. 1, the fixing mechanism comprises a tail fixing shaft 1, a first soft silica gel sleeve 2 and a metal sleeve 3 which are sleeved from inside to outside in sequence; in particular, the amount of the solvent to be used,
as shown in fig. 3(a) and 3(b), the tail fixing shaft 1 is a cylindrical structure, and a spiral through groove 1a is formed on the outer side wall surface of the tail fixing shaft from the bottom end to the top end in the circumferential direction of the tail fixing shaft, so that the tail of a rat is spirally wound on the tail fixing shaft 1 and is not easy to break loose; the groove width of the spiral through groove 1a is gradually reduced from the bottom end to the top end so as to adapt to the trend that the tail diameter of the rat is gradually reduced from the root to the tail end; meanwhile, the groove walls at two sides of the notch of the spiral through groove 1a extend to opposite sides slightly to form limiting strips, so that the width of the notch of the spiral through groove 1a is slightly smaller than the width of the inner side of the notch, and the tail of a rat is limited by the limiting strips when the tail of the rat is spirally wound on the tail fixing shaft 1, so that the tail is not easy to fall out of the spiral through groove 1 a;
as shown in fig. 2, the metal sleeve 3 is a cylindrical structure with an open top, and a through hole adapted to the outer diameter of the tail fixing shaft 1 is formed in the bottom surface of the metal sleeve; specifically, metal sleeve 3 comprises two semicircle sleeves by the run-to-run, convenient to use, and wherein, one side is provided with many pairs of otic placodes through hinge active link, opposite side symmetry respectively on the outer wall that two semicircle sleeves meet the department between two semicircle sleeves, makes two semicircle telescopic opposite sides through set up respectively to the bolt on the otic placode and with bolt matched with nut can dismantle fixed as an organic whole.
The first soft silica gel sleeve 2 is fixed on the inner wall of the metal sleeve 3, the outer diameter of the first soft silica gel sleeve is consistent with the inner diameter of the metal sleeve 3, and the inner diameter of the first soft silica gel sleeve is matched with the outer diameter of the tail fixing shaft 1, so that the tail fixing shaft 1 can be tightly sleeved on the inner side of the first soft silica gel sleeve 2; wherein, the tail fixing shaft 1 is made of hard silica gel with the hardness of 50D, and the first soft silica gel sleeve 2 is made of soft silica gel with the hardness of 30A; the first soft silica gel sleeve 2 is used for filling a gap between the metal sleeve and the tail fixing shaft 1, the first soft silica gel sleeve 2 and the metal sleeve 3 form an integral fixing structure which is not easy to loosen in the moving process of the rat by reasonably selecting and matching the hardness of silica gel of the tail fixing shaft 1 and the first soft silica gel sleeve 2;
in order to prevent the rat tail from necrosis caused by no ventilation, a plurality of mutually communicated air holes are respectively and uniformly distributed on the tail fixing shaft 1, the soft silica gel sleeve 2 and the metal sleeve 3; specifically, as shown in fig. 3(a), the air holes 1b on the tail fixing shaft 1 are respectively formed on the wall of the spiral through groove 1a and the side wall of the tail fixing shaft 1 to ensure that air can enter through the air holes and contact with the tail, so as to ensure good ventilation conditions, and correspondingly, the air holes formed on the soft silica gel sleeve 2 and the metal sleeve 3 are in one-to-one correspondence with the air holes formed on the tail fixing shaft 1 to ensure the inside and outside communication of the air; wherein, the aperture of the air hole formed on each single component is 3mm, and the aperture ratio is 15%;
the loading mechanism comprises a swing type connecting rod shaft 5, a telescopic bearing shaft 6 and a tail end fixing ring 7; wherein the content of the first and second substances,
as shown in fig. 1, the swing type connecting rod shaft 5 is composed of two vertical rods and a cylindrical cross rod, two ends of the cylindrical cross rod are respectively fixed on the side walls of the top ends of the two vertical rods, and the two vertical rods are respectively movably fixed on the top of the metal sleeve 3 through bolts, so that the two vertical rods and the outer wall of the metal sleeve 3 can be adjusted to form any included angle; in addition, the surface of the cross rod of the swing type connecting rod shaft 5 is covered with a polyurethane rubber layer, so that the surface of the cross rod has certain roughness, and the friction force of the tail of the rat relative to the surface of the cross rod is increased;
the telescopic bearing shaft 6 is composed of a horizontally arranged outer sleeve, a push rod horizontally arranged in the outer sleeve and a supporting block vertically fixed at the outer side end of the push rod, 3-5 radial pin holes are respectively formed in the push rod and the outer sleeve at equal intervals, so that the push rod can freely stretch and contract in the outer sleeve and can be fixed at any position in the outer sleeve through a pin; in order to adapt to the difference of the flexibility and the length of the tail of different rats, a fixing strip is also vertically fixed on the metal sleeve positioned below the swing type connecting rod shaft 5, four slots are arranged on the outer side wall surface of the metal sleeve at intervals from bottom to top, and the size of each slot is adapted to the size of the outer sleeve of the telescopic bearing shaft 6, so that the outer sleeve can be inserted and fixed in any slot;
the tail end fixing ring 7 is a ring body fixed at the top of the supporting block of the telescopic bearing shaft 6, the ring body is arranged in a mode that the axis of the ring body is vertical to the side wall of the metal sleeve 3, and a second soft silica gel sleeve with the inner diameter matched with the outer diameter of the tail end is arranged on the inner wall of the ring body; the second soft silica gel sleeve is made of soft silica gel with the hardness of 30A, and when the second soft silica gel sleeve is used, the second soft silica gel sleeve with a proper size is sleeved at the tail end of a rat, and then the second soft silica gel sleeve is sleeved in the ring body;
specifically, as shown in fig. 4, the tail end fixing ring 7 is composed of a first semicircular ring body 7a, a second semicircular ring body 7b, and a locking mechanism; one end of the first semicircular ring body 7a is connected with one end of the second semicircular ring body 7b through a rotating pin 7c to form an annular body; an inner rack 7d formed by a plurality of unidirectional teeth is processed on the outer side wall surface of the other end of the first semicircular ring body 7a, and a locking mechanism setting plate is formed by extending the other end of the second semicircular ring body 7b outwards; the locking mechanism is composed of a fixed strip 7e, an outer toothed strip 7g, a locking block 7i and a clamp spring 7f, one end of the outer toothed strip 7g is movably fixed on a locking mechanism setting plate through a rotating pin, the other end of the outer toothed strip is provided with a plurality of one-way teeth matched with the inner toothed strip 7d, the one-way teeth on the inner toothed strip 7d can be meshed with the one-way teeth at the end of the outer toothed strip 7g in an initial state, and a convex block is formed by extending the end part of the outer toothed strip 7g at the one-way teeth setting end along the axial direction; the locking block 7i is movably fixed on a locking mechanism setting plate close to the one-way tooth side of the outer rack 7g through a rotating pin, so that the outer rack 7g and the inner rack 7d can be disengaged by pushing a convex block on the outer rack 7g in the rotating process; the fixed strip 7e is parallel to the outer toothed strip 7g and is fixed on the locking mechanism setting plate, the clamp spring 7f is arranged between the fixed strip 7e and the outer toothed strip 7g in a compressed state, and when the locking block 7i rotates to a position far away from the convex block, the outer toothed strip 7g is restored to be meshed with the inner toothed strip 7d again under the action of the elastic force of the clamp spring 7 f;
in addition, in order to avoid the injury to the tail of the rat in the process of reducing the ring body, the distance between adjacent teeth on the inner rack and the outer rack of the tail end fixing ring 7 is 2-2.5 mm, so that when the teeth on the inner rack and the outer rack move relatively for one time, the inner diameter of the corresponding ring body changes by 0.5-0.7 mm, and the ring body is ensured to be gradually adjusted to be adaptive to the diameter of the tail end of the rat;
when the loading mechanism is used, the remained rat tail part which is wound and fixed on the tail part fixing shaft 1 is stretched to the cross rod of the swing type connecting rod shaft 5, and the tail end is finally sleeved into the tail end fixing ring 7 by bypassing the cross rod, the inclined angle of the swing type connecting rod shaft 5 relative to the side wall of the metal sleeve and the setting position of the telescopic bearing shaft 6 and the distance from the end part of the telescopic bearing shaft to the metal sleeve are reasonably adjusted, so that the tail part of the rat which is positioned at the outer side of the tail part fixing shaft 1 can be completely extended and fixed on the cross rod of the loading mechanism and in the tail end fixing ring 7 respectively, namely, the rat tail part is firmly fixed through the increased bearing.
The monitoring alarm mechanism comprises a tension sensor 8, a data recorder and an alarm device which are connected in sequence; as shown in fig. 1 and 5, a sliding rod is horizontally arranged at the top of the cage body, and a pull ring capable of freely sliding on the sliding rod is sleeved on the sliding rod; the tension sensor 8 is arranged in the cage body, the top end of the tension sensor is fixed on the pull ring through a connecting piece, so that the tension sensor 8 can reciprocate in the cage body along the axial direction of the slide rod, the sensitive bridge part at the bottom end of the tension sensor is fixed in the middle of a pull rope, and the two ends of the pull rope are respectively and symmetrically fixed on the top surface of the metal sleeve 3; the data recorder and the alarm device are arranged on the outer side of the cage body, the data recorder is used for continuously recording the tension value read by the tension sensor 8 and analyzing data, and when the tension value is abnormal, the alarm device is started to alarm to inform experimenters of timely modifying abnormal states.
Claims (10)
1. A rat tail suspension device based on weightlessness status simulation is characterized by comprising a fixing mechanism and a loading mechanism which are arranged in a cage body; wherein the content of the first and second substances,
the fixing mechanism comprises a tail fixing shaft (1), a first soft silica gel sleeve (2) and a metal sleeve (3) which are sequentially sleeved from inside to outside; the tail fixing shaft (1) is of a cylindrical structure, a spiral through groove (1a) is formed in the outer side wall surface of the tail fixing shaft from the bottom end to the top end in the circumferential direction of the tail fixing shaft, and the groove width of the spiral through groove (1a) is gradually reduced from the bottom end to the top end; the metal sleeve (3) is of a cylinder structure with an open top, and the bottom surface of the metal sleeve is provided with a through hole which is adaptive to the outer diameter of the tail fixing shaft (1); the first soft silica gel sleeve (2) is fixed on the inner wall of the metal sleeve (3), the outer diameter of the first soft silica gel sleeve is consistent with the inner diameter of the metal sleeve (3), and the inner diameter of the first soft silica gel sleeve is adaptive to the outer diameter of the tail fixing shaft (1), so that the tail fixing shaft (1) can be tightly sleeved on the inner side of the first soft silica gel sleeve (2);
the loading mechanism comprises a swing type connecting rod shaft (5), a telescopic bearing shaft (6) and a tail end fixing ring (7); the swing type connecting rod shaft (5) is composed of two vertical rods and a cylindrical cross rod, two ends of the cylindrical cross rod are respectively fixed on the side walls of the top ends of the two vertical rods, the two vertical rods are respectively and movably fixed on the top of the metal sleeve (3) through bolts, and the two vertical rods and the outer wall of the metal sleeve (3) can be adjusted to form any included angle; the telescopic bearing shaft (6) is composed of an outer sleeve, a push rod and a supporting block, wherein the outer sleeve is horizontally arranged, one end of the outer sleeve is fixed on the outer wall of the metal sleeve, the push rod is horizontally arranged in the outer sleeve, the supporting block is vertically fixed at the outer side end of the push rod, and the push rod and the outer sleeve are provided with a plurality of radial pin holes, so that the push rod can freely stretch and contract in the outer sleeve and can be fixed at any position in the outer sleeve; the tail end fixing ring (7) is a ring body fixed at the top of the supporting block of the telescopic bearing shaft (6), the ring body is arranged in a mode that the axis of the ring body is perpendicular to the side wall of the metal sleeve (3), and a second soft silica gel sleeve with the inner diameter matched with the outer diameter of the tail end is arranged on the inner wall of the ring body.
2. The rat tail suspension device based on weightless state simulation of claim 1, further comprising a monitoring alarm mechanism, which comprises a tension sensor (8), a data recorder and an alarm device connected in sequence; wherein, the tension sensor (8) is arranged in the cage body, the sensitive bridge part at the bottom end of the tension sensor is fixed at the middle part of a pull rope, and the two ends of the pull rope are respectively and symmetrically fixed on the top surface of the metal sleeve (3); the data recorder (9) and the alarm device (10) are arranged outside the cage body.
3. The rat tail suspension device based on weightless state simulation of claim 1, characterized in that the metal sleeve (3) is split into two semicircular sleeves, and one side between the two semicircular sleeves is movably connected through a hinge, and the other side is symmetrically provided with a plurality of pairs of ear plates on the outer wall of the joint of the two semicircular sleeves respectively, so that the other side of the two semicircular sleeves is detachably fixed into a whole through bolts respectively arranged on each pair of ear plates and nuts matched with the bolts.
4. The rat tail suspension device based on weightless condition simulation according to claim 1, wherein the slot walls at the two sides of the slot opening of the spiral through slot (1a) extend slightly to the opposite sides to form a limit strip, so that the width of the slot opening of the spiral through slot (1a) is slightly smaller than the width of the inner side thereof.
5. The rat tail suspension device based on weightless state simulation of claim 1, wherein a plurality of air holes which are communicated with each other are respectively and uniformly distributed on the tail fixing shaft (1), the first soft silica gel sleeve (2) and the metal sleeve (3); wherein, the aperture of the air holes is 3-5 mm, and the aperture ratio is 15-20%.
6. The rat tail suspension device based on weightless state simulation according to claim 5, wherein the tail fixing shaft (1) is made of hard silica gel with a hardness of 50D-60D, and the first soft silica gel sleeve (2) and the second soft silica gel sleeve are both made of soft silica gel with a hardness of 20A-30A.
7. The rat tail suspension device based on weightless condition simulation according to claim 1, wherein the surface of the cross bar of the swing type connecting rod shaft (5) is covered with a polyurethane rubber layer.
8. The rat tail suspension device based on weightless condition simulation as claimed in claim 2, wherein a sliding rod is horizontally arranged on the top of the cage body, a pull ring capable of freely sliding on the sliding rod is sleeved on the sliding rod, and the top end of the tension sensor (8) is fixed on the pull ring through a connecting piece, so that the tension sensor (8) can reciprocate along the axial direction of the sliding rod on the cage body.
9. The rat tail suspension device based on weightless condition simulation according to claim 1, wherein the tail end fixing ring (7) is composed of a first semicircular ring body (7a), a second semicircular ring body (7b) and a locking mechanism; one end of the first semicircular ring body (7a) is connected with one end of the second semicircular ring body (7b) through a rotating pin (7c) to form an annular body; an inner rack (7d) formed by a plurality of unidirectional teeth is processed on the outer side wall surface of the other end of the first semicircular ring body (7a), and a locking mechanism setting plate is formed by the outward extension of the other end of the second semicircular ring body (7 b); the locking mechanism is composed of a fixed strip (7e), an outer rack (7g), a locking block (7i) and a clamp spring (7f), one end of the outer rack (7g) is movably fixed on a locking mechanism setting plate through a rotating pin, the other end of the outer rack is provided with a plurality of one-way teeth matched with the inner rack (7d), the one-way teeth on the inner rack (7d) can be meshed with the one-way teeth at the end of the outer rack (7g) in an initial state, and a convex block is formed by extending the end part of the outer rack (7g) at the one-way teeth setting end along the axial direction; the locking block (7i) is movably fixed on a locking mechanism setting plate close to the one-way tooth side of the outer rack (7g) through a rotating pin, so that the locking block can push a lug on the outer rack (7g) to release the meshing relation between the outer rack (7g) and the inner rack (7d) in the rotating process; the fixing strip (7e) is parallel to the outer gear strip (7g) and fixed on the locking mechanism setting plate, the clamp spring (7f) is arranged between the fixing strip (7e) and the outer gear strip (7g) in a compressed state, and when the locking block (7i) rotates to a position far away from the convex block, the outer gear strip (7g) is restored to be meshed with the inner gear strip (7d) again under the elastic force action of the clamp spring (7 f).
10. The rat tail suspension device based on weightless state simulation of claim 9, wherein the distance between adjacent teeth on the inner rack and the outer rack of the tail end fixing ring (7) is 2-2.5 mm, so that when the teeth on the inner rack and the outer rack move relatively for one time, the inner diameter of the corresponding ring body changes by 0.5-0.7 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921380575.5U CN211139705U (en) | 2019-08-23 | 2019-08-23 | Rat tail suspension device based on weightlessness status simulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921380575.5U CN211139705U (en) | 2019-08-23 | 2019-08-23 | Rat tail suspension device based on weightlessness status simulation |
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| CN211139705U true CN211139705U (en) | 2020-07-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481820A (en) * | 2019-08-23 | 2019-11-22 | 天津理工大学 | A kind of rat tails suspension apparatus based on state of weightlessness simulation |
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2019
- 2019-08-23 CN CN201921380575.5U patent/CN211139705U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481820A (en) * | 2019-08-23 | 2019-11-22 | 天津理工大学 | A kind of rat tails suspension apparatus based on state of weightlessness simulation |
| CN110481820B (en) * | 2019-08-23 | 2024-03-08 | 天津理工大学 | Rat tail suspension device based on weightlessness status simulation |
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