CN113681493A - Fixed force wrench for astronaut in gravity-free environment - Google Patents
Fixed force wrench for astronaut in gravity-free environment Download PDFInfo
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- CN113681493A CN113681493A CN202111032280.0A CN202111032280A CN113681493A CN 113681493 A CN113681493 A CN 113681493A CN 202111032280 A CN202111032280 A CN 202111032280A CN 113681493 A CN113681493 A CN 113681493A
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- control rod
- astronaut
- gravity
- ratchet wheel
- force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/467—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member which are gear-operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/468—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member with possibility of locking the ratchet mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0035—Connection means between socket or screwdriver bit and tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/16—Handles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention relates to the technical field of manned spaceflight, in particular to a fixed-force wrench used by astronauts in a gravity-free environment, which comprises a handle shell, a ratchet device, a locking mechanism, an extension bar and a force measuring assembly, wherein the handle shell is provided with a ratchet wheel; the ratchet wheel device is arranged on the handle shell; the force measuring assembly is matched with the ratchet wheel device to control input torque; the extension bar is connected with the force measuring assembly through the locking mechanism, and the force measuring assembly can measure force and fix force in the screw tightening process through the force measuring assembly, so that the force fixing operation of the fastening device without disengaging is required to be completed in the tightening process on the premise that the astronaut cannot accurately sense the force application magnitude, and the torque is controlled within a certain range.
Description
Technical Field
The invention relates to the technical field of manned spaceflight, in particular to a fixed-force wrench used by astronauts in a gravity-free environment.
Background
When an extra-cabin device needs to be inspected and maintained by a space station astronaut, the screw is required to be screwed out of a fastening screw which does not fall off between a device mounting corner and a cabin plate, wherein the mounting and dismounting of the screw is routine and necessary operation of extra-cabin work of the astronaut, and manual screw-screwing operation is carried out on a pressurized space suit under a special space environment, so that higher requirements are provided for a wrench tool used by the extra-cabin device for the astronaut to go out of the cabin.
Because of the particularity of the using environment and the using working condition of the wrench, the sensing capability of the hand to the force is greatly different from the operation of the naked hand after a spaceman pressurizes the spacesuit in the space environment, in order to enable the spaceman wrench to screw the nail more conveniently, the wrench needs to have the functions of ratchet wheel reciprocation and reversing, in order to ensure the effective work of screwing the nail, when the bolt is installed or disassembled, the force application direction and the extension rod direction are required to be ensured to be on the same axis, and when a special fastening device which does not depart from a space station device is installed and disassembled, under the premise that the spaceman can not accurately sense the force application size, the fixed force operation of the fastening device which does not depart from the fastening device needs to be completed in the screwing process, the torque is controlled within a certain range, the bolt is protected from being screwed or damaged, but the fixed force on the ground is the spaceman sets a spring fixed force on the handle at present, so that the method is difficult for the spaceman to grasp the handle, and the alignment operation and the vertical force application operation of the extension bar cannot be carried out.
Therefore, it is necessary to provide a constant force wrench for astronauts to use in a gravity-free environment to solve the above problems.
Disclosure of Invention
The invention aims to overcome at least one defect (deficiency) in the prior art and provides a fixed force wrench which can meet the requirements of operation and function that after a spacecraft is pressurized, the force can be accurately sensed and the fixed force wrench can be used in a gravity-free environment in any posture.
In order to solve the technical problems, the technical scheme of the invention is as follows: a constant force wrench used by astronauts in a gravity-free environment comprises a handle shell, a ratchet wheel device, a locking mechanism, an extension bar and a force measuring assembly;
the ratchet wheel device is arranged on the handle shell;
the force measuring assembly is matched with the ratchet wheel device to control input torque;
the extension bar is connected with the force measuring assembly through the locking mechanism, the force measuring assembly can measure force and fix force in the screw tightening process through the arrangement of the force measuring assembly, the operation of fixing force on the fastening device which is not separated from the screw tightening process needs to be completed in the tightening process under the premise that a spaceman cannot accurately sense the force application size, and the torque is controlled within a certain range.
Furthermore, the force measuring assembly comprises an active control rod, a belleville spring, a fastening screw, a gland, a universal core arranged on the gland and a passive control rod connected with the locking mechanism;
the active control rod comprises an active control rod input shaft, a lower end surface groove and an active control rod output shaft which is mutually connected with the active control rod input shaft, and the active control rod input shaft is matched with the ratchet wheel device to be installed and control input torque;
the passive control rod is provided with an upper end surface boss;
the lower end face groove and the upper end face boss are installed in a matched mode, the butterfly spring is pressed on an output shaft of the active control rod by the pressing cover, the pressing cover and the passive control rod are connected with each other through the fastening screws, the upper end face boss and the lower end face groove are respectively designed on the end faces of the active control rod and the passive control rod, and the pressing cover and the butterfly spring are pressed in a pressing mode to be effectively matched together to play a role in fixing force, so that the fixing force operation of the fastening device which is not separated from the fastening device needs to be completed in the tightening process on the premise that a spaceman cannot accurately perceive the force application magnitude, the torque is controlled within a certain range, and the screw is protected from being twisted or damaged.
Furthermore, the passive control rod is provided with an anti-floating mechanism, and the anti-floating mechanism can play a role in anti-floating.
Further, the anti-floating mechanism comprises a top ball, a top ball spring and a plunger;
the passive control rod is provided with an installation connecting hole;
the ejector bead, the ejector bead spring and the plunger are all arranged in the mounting connecting hole, the ejector bead is pressed on the plunger through the ejector bead spring, and the handle shell can be prevented from floating for the first time after being assembled with the extension bar through the plunger, the ejector bead spring and the ejector bead.
Furthermore, a preformed hole is formed in the passive control rod, a locking hole is formed in the extension rod, the preformed hole is matched with the locking hole in position, and the locking mechanism is convenient to install and position through the preformed hole and the locking hole.
Furthermore, the locking mechanism comprises a pull handle, a pressure plate, a bolt, a flitch, a bayonet lock, a fastener and a spring sleeved outside the bayonet lock;
the pull handle is always in contact with the surface of the flitch, the flitch is fixed on the lengthening rod through a fastener, and the pressing plate is arranged on the plug pin;
the pull handle is connected with the bayonet lock through the bolt, when the pull handle needs to be locked, the pull handle rotates around the bolt, the bayonet lock is controlled to axially slide in the locking hole of the extension rod and is inserted into the reserved hole of the passive control rod to achieve locking, the pull handle is pulled to be in a closed state due to the fact that the pull handle is connected with the bayonet lock through the bolt, the bayonet lock can slide inwards along the locking hole and is inserted into the reserved hole in the input shaft of the active control rod to achieve locking, when the pull handle is pulled to be in an open state, the bayonet lock slides outwards along the locking hole and moves out of the reserved hole in the input shaft of the active control rod to achieve unlocking.
Furthermore, the fastening element is a fastening screw, and in practical applications, the fastening element may be other devices, which are within the protection scope of the present invention.
Furthermore, the ratchet wheel device comprises a gland, a left pawl, a right pawl, a pagoda spring, a direction knob, a square shaft, a reversing block and a ratchet wheel;
the ratchet wheel is arranged in the handle shell, one end of each of the left pawl and the right pawl is meshed with the ratchet wheel, and the other end of each of the left pawl and the right pawl is arranged in the handle shell through a pagoda spring;
the input shaft of the active control rod is arranged at the bottom of the ratchet wheel;
the direction knob is arranged on the press cover, the reversing block is connected with the direction knob through a square shaft, when the direction knob rotates, the reversing block synchronously rotates according to the rotating direction of the direction knob to open a left pawl or a right pawl close to one side of the steering wheel, when the direction knob is used, the direction knob can be shifted according to operation needs to reverse between two gears of loose and tight, the direction knob is connected with the reversing block through the square shaft to realize synchronous rotation, when the direction knob turns to the tight gear, the reversing block rotates rightwards to open the right pawl, the left pawl is meshed with the ratchet under the action of a pagoda spring, when the handle shell rotates clockwise, the left pawl drives the ratchet to rotate clockwise, when the handle shell rotates anticlockwise, the ratchet keeps still, the left pawl slides over ratchet teeth to realize the reset of the handle shell, when the direction knob turns to the loose gear, the reversing block rotates leftwards to open the left pawl, the right pawl is meshed with the ratchet wheel under the action of the pagoda spring, when the handle shell rotates anticlockwise, the right pawl drives the ratchet wheel to rotate anticlockwise, when the handle shell rotates clockwise, the ratchet wheel keeps still, and the right pawl slides over ratchet wheel teeth to reset the handle shell.
Furthermore, the handle shell is provided with the anti-floating ring, the anti-floating ring can be tightly bound or fixed through other devices when the anti-floating ratchet wrench is used, and potential safety hazards caused by floating of the space ratchet wrench under the environment without gravity due to sliding of hands when a space station astronaut is installed and detached outside a cabin are avoided.
Furthermore, the handle shell is provided with the anti-skidding grasping portions, and the space station astronaut can better hold the handle shell through the anti-skidding grasping portions.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
according to the fixed-force wrench used by the astronaut in the gravity-free environment, the force measuring component can measure the force and fix the force in the screw tightening process through the arrangement of the force measuring component, so that the fixed-force operation of the fastening device which is not separated from the tightening device needs to be completed in the tightening process under the premise that the astronaut cannot accurately sense the force application magnitude, the torque is controlled within a certain range, in addition, the arrangement of the ratchet device and the locking mechanism can quickly carry out the alignment operation and the vertical force application operation on the extension rod, and the screw tightening of the astronaut wrench is more convenient.
Drawings
Fig. 1 is a schematic structural view of the constant force wrench of the present invention.
FIG. 2 is a schematic view of the force measuring assembly of the present invention.
FIG. 3 is a schematic view of the ratchet device of the present invention disposed within the handle housing.
Fig. 4 is an exploded view of the locking mechanism of the present invention.
FIG. 5 is a schematic diagram of the principle of constant force measurement in the present invention.
In the figure, 1 is a handle shell, 2 is a ratchet device, 3 is a locking mechanism, 4 is an extension bar, 5 is a force measuring component, 6 is an active control rod, 7 is a belleville spring, 8 is a fastening screw, 9 is a gland, 10 is a universal core, 11 is a passive control rod, 12 is an input shaft of the active control rod, 13 is a groove of the lower end face, 14 is an output shaft of the active control rod, 15 is a boss of the upper end face, 16 is an anti-floating mechanism, 17 is a top bead, 18 is a top bead spring, 19 is a plunger piston, 20 is an installation connecting hole, 21 is a reserved hole, 22 is a locking hole, 23 is a pull handle, 24 is a pressing plate, 25 is a bolt, 26 is a pasting plate, 27 is a clamping pin, 28 is a fastener, 29 is a spring, 30 is a pressing cover, 31 is a left pawl, 32 is a right pawl, 33 is a pagoda spring, 34 is a direction knob, 35 is a square shaft, 36 is a reversing block, 37 is a ratchet wheel, 38 is an anti-floating ring, and 39 is an anti-skid grip.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1, a constant force wrench for astronauts to use in a gravity-free environment comprises a handle shell 1, a ratchet device 2, a locking mechanism 3, an extension bar 4 and a force measuring assembly 5; the ratchet wheel device 2 is arranged on the handle shell 1; the force measuring component 5 is matched with the ratchet wheel device 2 to control the input torque; extension bar 4 is connected with dynamometry subassembly 5 through locking mechanism 3, through the setting of dynamometry subassembly 5, dynamometry subassembly 5 can carry out dynamometry standard force to the screw tightening in-process, guarantee under the prerequisite that the unable accurate perception of astronaut applied force size, need accomplish the fixed force operation to not deviating from fastener in the tightening in-process, with torque control in certain extent, in addition, ratchet 2 and locking mechanism 3's setting can carry out counterpoint operation and perpendicular application of force operation to extension bar 4 fast, it is more convenient to make the astronaut spanner screw up.
As shown in fig. 2, the force measuring assembly 5 comprises an active control rod 6, a belleville spring 7, a fastening screw 8, a gland 9, a universal core 10 arranged on the gland 9 and a passive control rod 11 connected with the locking mechanism 3; the active control rod 6 comprises an active control rod input shaft 12, a lower end surface groove 13 and an active control rod output shaft 14 which is mutually connected with the active control rod input shaft 12, and the active control rod input shaft 12 is matched with the ratchet device 2 to be installed and control input torque; the passive control rod 11 is provided with an upper end surface boss 15; the lower end face groove 13 and the upper end face boss 15 are installed in a matching mode, the butterfly spring 7 is pressed on the output shaft 14 of the active control rod by the gland 9, the gland 9 and the passive control rod 11 are connected with each other through the fastening screw 8, the upper end face boss 15 and the lower end face groove 13 are respectively designed on the end faces of the active control rod 6 and the passive control rod 11, and are pressed with the butterfly spring 7, so that the upper end face boss 15 and the lower end face groove are effectively matched together to play a role of fixing force, the fixed force operation of the fastening device which does not fall off needs to be completed in the tightening process under the premise that a spaceman cannot accurately sense the magnitude of the applied force, the moment is controlled within a certain range, the screw is protected from being twisted or being twisted, wherein the passive control rod 11 is provided with the anti-floating mechanism 16, the anti-floating effect can be achieved through the arrangement of the anti-floating mechanism 16, in the invention, the anti-floating mechanism 16 comprises a top bead 17, a ball-top spring 18 and a plunger 19; the passive control rod 11 is provided with a mounting connection hole 20; top pearl 17, top pearl spring 18 and plunger 19 all set up in erection joint hole 20, top pearl 17 is through the pressfitting of top pearl spring 18 on plunger 19, through plunger 19, top pearl spring 18 and the setting of top pearl 17, can realize that the handle casing 1 prevents for the first time after 4 assembles of extension bar is floated, in addition, be equipped with preformed hole 21 on passive control lever 11, be equipped with locking hole 22 on the extension bar 4, preformed hole 21 and locking hole 22's position phase-match, through the setting of preformed hole 21 and locking hole 22, be convenient for locking mechanism 3's installation and location.
As shown in fig. 3, the locking mechanism 3 comprises a pull handle 23, a pressure plate 24, a latch 25, a pasting plate 26, a bayonet 27, a fastener 28 and a spring 29 sleeved outside the bayonet 27; the pull handle 23 is always kept in contact with the surface of the flitch 26, the flitch 26 is fixed on the extension rod 4 through a fastener 28, and the press plate 24 is arranged on the bolt 25; the pull handle 23 and the bayonet 27 are connected through a bolt 25, when locking is needed, the pull handle 23 rotates around the bolt 25, the control bayonet 27 axially slides in the locking hole 22 of the extension rod 4 and is inserted into the preformed hole 21 of the passive control rod 11 to realize locking, because the pull handle 23 and the bayonet 27 are connected through the bolt 25, the pull handle 23 is set to be in a closed state, the bayonet 27 can slide inwards along the locking hole 22 and is inserted into the preformed hole 21 on the input shaft 12 of the active control rod to realize locking, and when the pull handle 23 is set to be in an open state, the bayonet 27 slides outwards along the locking hole 22 and is moved out of the preformed hole 21 on the input shaft 12 of the active control rod to realize unlocking.
As shown in fig. 4, the ratchet device 2 comprises a gland 30, a left pawl 31, a right pawl 32, a pagoda spring 33, a direction knob 34, a square shaft 35, a reversing block 36 and a ratchet wheel 37;
the ratchet wheel 37 is arranged in the handle shell 1, one end of the left pawl 31 and one end of the right pawl 32 are respectively meshed with the ratchet wheel 37, and the other ends are respectively arranged in the handle shell 1 through the pagoda spring 33; the active control rod input shaft 12 is arranged at the bottom of a ratchet wheel 37, a direction knob 34 is arranged on a gland 30, a reversing block 36 is connected with the direction knob 34 through a square shaft 35, when the direction knob 34 rotates, the reversing block 36 synchronously rotates according to the rotating direction of the direction knob 34, so that a left pawl 31 or a right pawl 32 close to one side of the turning direction is opened, when the active control rod input shaft is used, the direction knob 34 can be shifted according to operation requirements to reverse between two gears of 'loose' and 'tight', the direction knob 34 is connected with the reversing block 36 through the square shaft to realize synchronous rotation, when the direction knob 34 rotates to the 'tight', the reversing block 36 rotates rightwards to open the right pawl 32, the left pawl 31 is meshed with the ratchet wheel 37 under the action of a pagoda spring 33, when the handle shell 1 rotates clockwise, the left pawl 31 drives the ratchet wheel 37 to rotate clockwise, and when the handle shell 1 rotates anticlockwise, the left pawl 31 slides over the ratchet teeth to reset the handle shell 1, when the direction knob 34 turns to a loose gear, the reversing block 36 turns left to open the left pawl 31, the right pawl 32 is meshed with the ratchet under the action of the pagoda spring 33, when the handle shell 1 rotates anticlockwise, the right pawl 32 drives the ratchet 37 to rotate anticlockwise, when the handle shell 1 rotates clockwise, the ratchet 37 keeps still, and the right pawl 32 slides over the ratchet teeth to reset the handle shell 1.
In the invention, the anti-floating ring 38 is arranged on the handle shell 1, and the anti-floating ring 38 can be tied or fixed by other devices when in use through the arrangement of the anti-floating ring 38, so that potential safety hazards caused by floating of the space ratchet wrench in a gravity-free environment due to hand slip when a space station astronaut is installed and detached outside a cabin are avoided, in addition, the anti-sliding grip 39 is arranged on the handle shell 1, and the space station astronaut can better hold the handle shell 1 through the arrangement of the anti-sliding grip 39.
As shown in fig. 5, the inclination angle θ of the concave-convex groove side of the active control rod 6 and the passive control rod 11 is 45 °, the operation force of the active control rod 6 is F, the boss thickness is S, the compression amount of the belleville spring 7 is F, the load of the belleville spring 7 compressed by the active control rod 6 is P, wherein, S is less than or equal to F, P ═ F ═ tg ═ F, the parameter of the corresponding belleville spring 7 is selected to ensure that the output torque M ═ F ═ L meets the design requirement, when the active control rod 6 rotates, the passive control rod 11 rotates, the active control rod 6 is lifted, when the torque value reaches the range of the constant force value, the belleville spring 7 is compressed in place, the groove of the active control rod 6 is completely separated from the boss of the passive control rod 11, the active control rod 6 and the passive control rod 11 freely slip to complete force release, and the torque is not transmitted to the screw to play a role in setting.
In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a astronaut decides power spanner that uses under no gravity environment, includes handle casing, ratchet, locking mechanism and extension bar, its characterized in that: the device also comprises a force measuring component;
the ratchet wheel device is arranged on the handle shell;
the force measuring assembly is matched with the ratchet wheel device to control input torque;
the extension bar is connected with the force measuring assembly through a locking mechanism.
2. The fixed force wrench for use by an astronaut in a gravity-free environment according to claim 1, wherein: the force measuring assembly comprises an active control rod, a belleville spring, a fastening screw, a gland, a universal core arranged on the gland and a passive control rod connected with the locking mechanism;
the active control rod comprises an active control rod input shaft, a lower end surface groove and an active control rod output shaft which is mutually connected with the active control rod input shaft, and the active control rod input shaft is matched with the ratchet wheel device to be installed and control input torque;
the passive control rod is provided with an upper end surface boss;
the lower end face groove and the upper end face boss are installed in a matched mode, the butterfly spring is pressed on the output shaft of the active control rod through the pressing cover, and the pressing cover and the passive control rod are connected with each other through the fastening screws.
3. The fixed force wrench for use by an astronaut in a gravity-free environment according to claim 2, wherein: and an anti-floating mechanism is arranged on the passive control rod.
4. The fixed force wrench for use by an astronaut in a gravity-free environment according to claim 2, wherein: the anti-floating mechanism comprises a top bead, a top bead spring and a plunger;
the passive control rod is provided with an installation connecting hole;
the top bead, the top bead spring and the plunger are all arranged in the mounting connecting hole, and the top bead is pressed on the plunger through the top bead spring.
5. The fixed force wrench for use by an astronaut in a gravity-free environment according to claim 2, wherein: the passive control rod is provided with a preformed hole, the extension rod is provided with a locking hole, and the preformed hole is matched with the locking hole in position.
6. The fixed force wrench as claimed in claim 5, wherein: the locking mechanism comprises a pull handle, a pressing plate, a bolt, a flitch plate, a bayonet lock, a fastener and a spring sleeved outside the bayonet lock;
the pull handle is always in contact with the surface of the flitch, the flitch is fixed on the lengthening rod through a fastener, and the pressing plate is arranged on the plug pin;
the pull handle is connected with the bayonet lock through the plug pin, when the pull handle needs to be locked, the pull handle rotates around the plug pin, the bayonet lock is controlled to axially slide in the locking hole of the lengthening rod, and the pull handle is inserted into the reserved hole of the passive control rod to realize locking.
7. The fixed force wrench for use by an astronaut in a gravity-free environment according to claim 6, wherein: the fastener is a fastening screw.
8. The fixed force wrench for use by an astronaut in a gravity-free environment according to claim 2, wherein: the ratchet wheel device comprises a gland, a left pawl, a right pawl, a pagoda spring, a direction knob, a square shaft, a reversing block and a ratchet wheel;
the ratchet wheel is arranged in the handle shell, one end of each of the left pawl and the right pawl is meshed with the ratchet wheel, and the other end of each of the left pawl and the right pawl is arranged in the handle shell through a pagoda spring;
the input shaft of the active control rod is arranged at the bottom of the ratchet wheel;
the direction knob is installed on the gland, the reversing block is connected with the direction knob through the square shaft, and when the direction knob rotates, the reversing block synchronously rotates according to the rotating direction of the direction knob, so that the left pawl or the right pawl close to one side of the steering wheel is opened.
9. The fixed force wrench for use by an astronaut in a gravity-free environment according to claim 1, wherein: an anti-floating ring is arranged on the handle shell.
10. The fixed force wrench for use by an astronaut in a gravity-free environment according to claim 1, wherein: the handle shell is provided with an anti-skid grip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111032280.0A CN113681493B (en) | 2021-09-03 | 2021-09-03 | Fixed force wrench for astronaut in gravity-free environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111032280.0A CN113681493B (en) | 2021-09-03 | 2021-09-03 | Fixed force wrench for astronaut in gravity-free environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113681493A true CN113681493A (en) | 2021-11-23 |
| CN113681493B CN113681493B (en) | 2022-04-22 |
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| CN202111032280.0A Active CN113681493B (en) | 2021-09-03 | 2021-09-03 | Fixed force wrench for astronaut in gravity-free environment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114665423A (en) * | 2022-03-17 | 2022-06-24 | 中建八局第二建设有限公司 | Bridge cable fixing and summarizing device and construction method |
| CN114714297A (en) * | 2022-04-11 | 2022-07-08 | 临沂矿业集团菏泽煤电有限公司彭庄煤矿 | Quick loosening and tightening device |
| CN114734407A (en) * | 2022-06-14 | 2022-07-12 | 天津航天机电设备研究所 | Commutator and tool for space station mechanical arm target adapter |
| CN115070684A (en) * | 2022-05-19 | 2022-09-20 | 上海宇航系统工程研究所 | Tool and method for disassembling outer screw of spacecraft cabin |
| CN115625664A (en) * | 2022-12-19 | 2023-01-20 | 天津航天机电设备研究所 | Torque wrench for space environment |
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| TWI688454B (en) * | 2019-06-18 | 2020-03-21 | 重威企業有限公司 | Angle gauge and hand tool with the angle gauge |
| CN113134799A (en) * | 2021-03-22 | 2021-07-20 | 郑州工业应用技术学院 | Multifunctional wrench for automobile maintenance |
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| JP2008006514A (en) * | 2006-06-27 | 2008-01-17 | Yamashita Kogyo Kenkyusho:Kk | Torque adaptor for socket wrench |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114665423A (en) * | 2022-03-17 | 2022-06-24 | 中建八局第二建设有限公司 | Bridge cable fixing and summarizing device and construction method |
| CN114665423B (en) * | 2022-03-17 | 2023-09-26 | 中建八局第二建设有限公司 | Bridge cable fixing and inducing device and construction method |
| CN114714297A (en) * | 2022-04-11 | 2022-07-08 | 临沂矿业集团菏泽煤电有限公司彭庄煤矿 | Quick loosening and tightening device |
| CN115070684A (en) * | 2022-05-19 | 2022-09-20 | 上海宇航系统工程研究所 | Tool and method for disassembling outer screw of spacecraft cabin |
| CN115070684B (en) * | 2022-05-19 | 2023-09-29 | 上海宇航系统工程研究所 | Tool and method for disassembling screw outside spacecraft cabin |
| CN114734407A (en) * | 2022-06-14 | 2022-07-12 | 天津航天机电设备研究所 | Commutator and tool for space station mechanical arm target adapter |
| CN114734407B (en) * | 2022-06-14 | 2022-09-02 | 天津航天机电设备研究所 | Commutator and tool for space station mechanical arm target adapter |
| CN115625664A (en) * | 2022-12-19 | 2023-01-20 | 天津航天机电设备研究所 | Torque wrench for space environment |
| CN115625664B (en) * | 2022-12-19 | 2023-09-01 | 天津航天机电设备研究所 | Moment spanner for space environment |
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| CN113681493B (en) | 2022-04-22 |
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