CN2175851Y - Double friction-disk stepless speed regulating device - Google Patents
Double friction-disk stepless speed regulating device Download PDFInfo
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- CN2175851Y CN2175851Y CN 93247856 CN93247856U CN2175851Y CN 2175851 Y CN2175851 Y CN 2175851Y CN 93247856 CN93247856 CN 93247856 CN 93247856 U CN93247856 U CN 93247856U CN 2175851 Y CN2175851 Y CN 2175851Y
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Abstract
The utility model relates to a double friction-disk stepless speed regulating device which belongs to a mechanical friction type stepless speed regulating device, mainly comprising a machine casing, a friction transmission mechanism, an automatic pressurizing and output mechanism and a speed regulating mechanism, wherein, the friction transmission mechanism and the automatic pressurizing and output mechanism are installed in the machine casing, and the speed regulating mechanism is positioned on the side face of the machine casing and is matched with a variable speed supporting frame in the friction transmission mechanism to carry out speed regulation; the friction transmission mechanism realizes the transfer of torque and rotation speed through the friction fit between a driving disk and a friction disk and between an intermediate disk and a driven disk, and the torque is output through the output shaft of the automatic pressuring and output mechanism. The utility model has the advantages of simple structure and large speed regulating range, and is mainly applicable to motors.
Description
The utility model is an a kind of pair of Friction Disk Stepless Speed Change Device, belongs to the technical field of mechanical friction type stepless speed-regulating device.
At present, the mode that realizes stepless speed regulation on motor is more, generally can be divided into two big classes: a class is the mode of electromagnetic stepless speed governing, another kind of is the mode of mechanical friction stepless speed regulation, realize that with electromagnetic action the stepless speed regulation of motor generally has the cascade speed control or the speed governing of control rotor resistance of wound rotor asynchronous machine, the variable voltage control of squirrel cage induction motor or frequency-adjustable speed-adjustable or the like, but it is less that existing shortcoming is a speed adjustable range, speed adjustable range as the stepless speed regulation of wound rotor asynchronous machine is generally 65-100%, squirrel cage induction motor is 70-100% with the speed adjustable range of stator variable voltage speed control, though and be 0-100% with the speed adjustable range of the squirrel cage induction motor of stator frequency-adjustable speed-adjustable, but full distance speed regulating, but torque ripple, and need corresponding electric control equipment, the cost height, cost an arm and a leg, utilize the stepless speed regulation of the effect realization motor of mechanical friction, its key is the stepless speed adjusting gear with electric drilling match, and the stepless speed adjusting gear of mechanical friction type generally has the toothed-chain type stepless speed adjusting gear, the multi-disc type stepless speed adjusting gear, planetary cone wheel formula stepless speed adjusting gears etc. are several.The mode of stepless speed regulation that is used for realizing motor with mechanical friction, its advantage is to realize the permanent moment of torsion of permanent power, speed governing is even, applicability is strong, but at present the stepless speed adjusting gear of the mechanical friction type that uses also exists complex structure, shortcoming that speed adjustable range is little, and speed ratio is generally in the 1:7, as shown in Figure 1 the toothed-chain type stepless speed adjusting gear made of China Textile Machinery Plant, structure is comparatively complicated, and speed ratio is 1:6.
The purpose of this utility model is a kind of pair of Friction Disk Stepless Speed Change Device of design, has bigger speed adjustable range, and practical.
Another purpose of the present utility model be design a kind of simple in structure, volume is little, in light weight and speed regulator that cost is low.
The designed a kind of pair of Friction Disk Stepless Speed Change Device of the utility model is mainly by casing 01, slip gear 02, pressurization and output mechanism 03 and speed regulating mechanism 04 are formed automatically, casing 01 is a box shaped body, one end is fixed with the end cap that is connected with motor or other power plant, slip gear 02 and automatic pressurization and output mechanism 03 are installed in the casing 01, and speed regulating mechanism 04 is installed in a side of casing 01.Said slip gear 02 is by driving disc 1, friction disk 2, land 3, speed change support 4, telophragma 5 and driven disc 6 are formed, driving disc 1 is for having the friction disk of conical surface, position of center line has the hole, match with the output shaft of motor or other power plant and to be connected, friction disk 2 is an annual disk, its annular end face cooperates with the conical surface pressing friction of driving disc 1, friction disk 2, land 3 and telophragma 5 are fixedly installed togather, and has same center line, the center line of this center line and driving disc 1 has an inclined angle alpha, the α scope is in 4 °-20 °, at land 3 and telophragma 5 joints speed change support 4 is installed, telophragma 5 is for having the friction disk of the conical surface identical with driving disc 1, driven disc 6 is the annual disk identical with friction disk 2, the annular end face of driven disc 6 cooperates with the conical surface pressing friction of telophragma 5, driven disc 6 has same center line with driving disc 1, said automatic pressurization and output mechanism 03 are by driven disc zygote 7, spring 8, mandrel 9, output shaft zygote 10, axle sleeve 11 and output shaft 12 are formed, driven disc zygote 7 is fixed together with driven disc 6, and on same center line, driven disc zygote 7 has center hole, mandrel 9 is installed in the center hole and is enclosed within spring 8 on the mandrel 9, output shaft zygote 10 1 ends are connected with driven disc zygote 7, the other end is connected with output shaft 12, axle sleeve 11 is enclosed within outside driven disc zygote 7 and the output shaft zygote 10, be supported on the casing 01, driving disc 1, driven disc 6, driven disc zygote 7, output shaft zygote 10 and output shaft 12 are all on same center line, said speed regulating mechanism 04 is by locking handwheel 21, speed-regulating hand wheel 22, gear shaft 24, dial 25 and speed change slide plate 26 are formed, speed change slide plate 26 is installed on the casing madial wall and is connected with speed change support 4, speed change slide plate 26 has toothed surface, gear shaft 24 1 ends have gear, toothed surface with speed change slide plate 26 in casing meshes, the other end of gear shaft 24 is positioned at outside the casing 01, dial 25 is installed successively, speed-regulating hand wheel 22, locking handwheel 21, locking handwheel 21 is positioned at outermost end, dial 25 is fixed on the speed-regulating hand wheel 22, corresponding graduation line is arranged on the casing 01, and speed-regulating hand wheel 22 is fixedlyed connected with gear shaft 24.
For the heat that rubbing surface produced that makes mutual rubbing contact dissipates as early as possible, all have the fans of cooling off usefulness at the back side of the conical surface of driving disc 1 and telophragma 5.
Driven disc zygote 7 in automatic pressurization and output mechanism 03 is connected with a joggle by corresponding ups and downs cam-shaped end face with output shaft zygote 10.
The tapped hole that reference level is all arranged on the untapped wall of casing 01 and can be connected with other corollary equipment is so that install miscellaneous equipment.
When work, motor or other power plant are fixed on the end cap of casing 01, the hole of its output shaft and driving disc 1 is connected, drive driving disc 1 rotation, because friction disk 2 cooperates with driving disc 1 pressing friction, therefore friction disk 2, land 3 and telophragma 5 are all with driving disc 1 rotation, form the one-level transmission of moment of torsion and rotating speed, cooperate with the pressing friction of telophragma 5 by driven disc 6 again, realize the secondary transmission of moment of torsion and rotating speed, and moment of torsion and rotating speed are passed to output shaft 12 by driven disc zygote 7 and output shaft zygote 10.When the need speed governing, unclamp locking handwheel 21, rotate speed-regulating hand wheel 22, driven gear axle 24 rotates, because gear on the gear shaft 24 and the engagement of the toothed surface of speed change slide plate 26, therefore driving speed change slide plate 26 moves up and down, speed change slide plate 26 drives speed change support 4 again and moves, the friction radius that makes friction disk 2 be contacted with driving disc 1 increases or reduces, cause the rotating speed of friction disk 2 to increase or reduce, the also corresponding increase of friction radius between telophragma 5 and the driven disc 6 or reduce makes the rotating speed of driven disc 6 increase with respect to the rotating speed of telophragma 5 or reduces, driven disc 6 with respect to driving disc 1 then rotating speed greatly increase or greatly reduce.Realize quickening or slowing down, dial 25 is to demarcate through strict, when speed-regulating hand wheel 22 is transferred to required rotating speed according to the indication of dial 25, can tighten locking handwheel 21, and with speed-regulating hand wheel 22 fixing and lockings, the rotating speed of output shaft 12 just is required rotating speed.In automatic pressurization and output mechanism 03, because spring 8 is installed in the driven disc zygote 7, and certain pretightening force is arranged, therefore keep certain pressure between friction disk 2 and the driving disc 1 and between telophragma 5 and the driven disc 6, when output shaft 12 loads increase, when moment of torsion increases, the axial pressure of output shaft zygote 10 increases, cause driven disc zygote 7 to move axially, pressure between each surface of contact is increased, to reach the frictional force that increases between the dish that cooperatively interacts, realize the purpose of pressurization automatically.
The advantage of a kind of pair of Friction Disk Stepless Speed Change Device that the utility model is designed is:
1. the utility model enlarges speed adjustable range by the slip gear between unique two stage conical face-annual disk, and speed ratio can reach 1:20.
2. compare with the speed regulator of the mechanical friction type of current use, the utility model is simple in structure, can realize the purpose of speed governing by the dish of two pairs of phase mutual friction, and part is few, and cost is low, and volume is little.
3. the utility model reaches the purpose of automatic pressurization by automatic pressurization and output mechanism, makes output torque and rotating speed be hardware features, stable drive, reliable operation.
The utility model casing do not use wall all have reference level and can with the supporting tapped hole that is connected of miscellaneous equipment, therefore can install and operate other corollary equipment easily.
5. speed regulating mechanism of the present utility model is simple and reliable, but both manual governings also can realize automatic speed regulation.
6. in the casing of the present utility model, do not need with lubricator between each part that cooperatively interacts, can guarantee proper functioning.
The utility model mainly is applicable on the motor product of the following power range of 20KW, is good with the motor in the 0.006-5.5KW power range, both can be directly and motor be used the use of also can connecting with retarder.In addition, the utility model is applicable to also with other power plant (20KW is following) and is used that purposes is comparatively extensive.
Fig. 1 is the schematic representation of toothed-chain type stepless speed adjusting gear.
Fig. 2 is the sectional view of a kind of pair of designed Friction Disk Stepless Speed Change Device of the utility model.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the automatic telophragma sectional view of pressurization and output mechanism among Fig. 2.
Fig. 5 is the side view of Fig. 4.
Fig. 6 is the automatic sectional view of the driven disc zygote of pressurization and output mechanism among Fig. 2.
Fig. 7 is the side view of Fig. 6,
Fig. 8 is that the B of outer surface of driven disc zygote end of Fig. 6 is to the expansion schematic representation of half-twist.
Mode of execution of the present utility model and effect are further described according to specific embodiment below in conjunction with accompanying drawing.
Embodiment
Fig. 2, the 3rd, the structural drawing of a kind of pair of Friction Disk Stepless Speed Change Device that the utility model is designed.Mainly by casing 01, slip gear 02, automatically pressurization and output mechanism 03 and speed regulating mechanism 04 are formed, casing 01 is a box shaped body, a corresponding left side, right both ends of the surface have mounting hole, one end has end cap 16 by bolt, have in the middle of the end cap 16 with casing 01 in the through hole that communicates, fixedly connected with motor 17 by end cap 16, motor 17 is that power is the motor of 0.18KW, the output shaft 18 of motor 17 stretches in the casing 01, slip gear 02 and automatic pressurization and output mechanism 03 are installed on the interior same axis of casing, slip gear 02 is by driving disc 1, friction disk 2, land 3, speed change support 4, telophragma 5 and driven disc 6 are formed, the end face of driving disc 1 one ends is a conical surface, the neutral position of the other end has the self-locking cone shape hole, the output shaft 18 of motor 17 cooperates with the self-locking cone shape hole self-locking of driving disc 1, the back side of the conical surface of driving disc 1 is useful on the fans 19 of heat transmission, friction disk 2 is an annual disk, be fixed together by screw and land 3, telophragma 5 is as Fig. 4, shown in 5, similar to driving disc 1, one end face is a conical surface, the back side of conical surface has fans 31, the other end has neutral threaded hole, land 3 cooperates with the neutral threaded hole of telophragma 5 by middle bolt 20 and is fixed together, outside the joint of land 3 and telophragma 5, be set with radial ball bearing 30, the hole interference assembling of the outer shroud of radial ball bearing 30 and speed change support 4.The annular end face of friction disk 2 cooperates with the conical surface pressing friction of driving disc 1, because friction disk 2, land 3 and telophragma 5 total same center lines, the center line of this center line and driving disc 1 has an inclined angle alpha, α is 15 °, so the annular end face of friction disk 2 only cooperates for the part pressing friction with the conical surface of driving disc 1.Driven disc 6 is the annual disk identical with friction disk 2, its center line and driving disc 1 are same center line, the annular end face of driven disc 6 cooperates with the conical surface pressing friction of telophragma 5, identical with the frictional fit between driving disc 1 and the friction disk 2, because the existence of α, the frictional fit of driven disc 6 and telophragma 5 is also for the part pressing friction cooperates, and with driving disc 1 and friction disk 2 the part pressing friction cooperate symmetrical.Automatically pressurization and output mechanism 03 mainly are made up of driven disc zygote 7, spring 8, mandrel 9, output shaft zygote 10, axle sleeve 11 and output shaft 12.Driven disc zygote 7 is as Fig. 6,7, shown in 8, the intermediate portion bit strip has center hole, driven disc zygote 7 one ends are fixed together by screw and driven disc 6, mandrel 9 and the spring 8 that is enclosed within on the mandrel 9 are installed in the center hole, spring 8 has certain pretightening force, the end face of the other end of driven disc zygote 7 is ups and downs cam-shaped face, and an end face of output shaft zygote 10 is a cam-shaped face with matching, the both ends of the surface connection that is meshing with each other, the other end of output shaft zygote 10 is a cross, be connected with output shaft 12 crosses, driven disc zygote 7 and output shaft zygote 10 are supported in the axle sleeve 11 by needle bearing 32, axle sleeve 11 is enclosed within again on the interior ring of radial ball bearing 33, cooperate by the mounting hole of radial ball bearing 33 with casing 01, to pressurize automatically and output mechanism 03 is supported in the casing 01, radial ball bearing 33 outer ends are by seal ring 34 sealings, and output shaft 12 stretches to outside the casing 01.Driven disc 6, driven disc zygote 7, output shaft zygote 10 and output shaft 12 have the same center line identical with driving disc 1.Because spring 8 has certain pretightening force, is about 5.5kg, make between each dish to compress, have certain pressure.Speed regulating mechanism 04 is mainly by locking handwheel 21, speed-regulating hand wheel 22, gear shaft 24, dial 25 and speed change slide plate 26 are formed, speed change slide plate 26 is installed on the sidewall in the casing 01, can slide up and down along sidewall, the arcuation concave panel of speed change slide plate 26, steel ball 27, speed change support 4 corresponding arcuation concave panels have been formed rolling guide, but make speed change support 4 both covariant ski-running plate 26 move radially up and down, also can move axially along rolling guide.Speed change slide plate 26 has the toothed surface similar to tooth bar, one end of gear shaft 24 has gear, be positioned at casing 01, with the toothed surface engagement of speed change slide plate 26, the other end of gear shaft 24 is outside casing 01, on the gear shaft 24 of casing 01 outer end, dial 25, speed-regulating hand wheel 22 and locking handwheel 21 are installed successively, dial 25 is fixed on the speed-regulating hand wheel 22 after demarcating through strictness, has on the casing 01 and dial 25 corresponding graduation lines; The speed-regulating hand wheel 22 adjacent with dial 25 fixedlyed connected with gear shaft 24 by key 23, and locking handwheel 21 is positioned at the outermost end of gear shaft 24, is connected with gear shaft 24 by screw-thread fit, plays the effect of fixing and locking speed-regulating hand wheel 22.In six walls of casing 01, face is used for being connected of casing 01 and motor 17, a face is used to install speed regulating mechanism 04, a face is used for support sleeve 11, and other three faces are the face that do not use, on these three outer surfaces that do not use face, reference level and tapped hole are arranged all, be connected so that install with miscellaneous equipment.
When work, because the output shaft 18 of motor 17 cooperates with the self-locking cone shape hole self-locking of the centre of driving disc 1, so the moment of torsion and the rotating speed of output shaft 18 outputs of motor 17 pass to driving disc 1, frictional fit by friction disk 2 and driving disc 1 makes friction disk 2 rotate with driving disc 1, again because of the partial frictional contact of friction disk 2 with driving disc 1, make friction disk 2 different with the friction radius of driving disc 1, be that friction disk 2 is different with the rotating speed of driving disc 1, realize speed governing, form the one-level transmission of moment of torsion and rotating speed between friction disk 2 and the driving disc 1.Because of friction disk 2, land 3 and telophragma 5 are fixed together, so telophragma 5 rotates with speed with friction disk 2.Driven disc 6 cooperates with telophragma 5 pressing frictions, and and the partial frictional contact between driving disc 1 and the friction disk 2 is symmetrical, so telophragma 5 passes to driven disc 6 with moment of torsion and rotating speed, form the secondary transmission of moment of torsion and rotating speed, driven disc 6 passes to output shaft 12 by driven disc zygote 7 and output shaft zygote 10 with moment of torsion and rotating speed.When desiring speed governing, unclamp the locking handwheel 21 of speed regulating mechanism 04, rotate speed-regulating hand wheel 22, owing to be connected by key 23 between speed-regulating hand wheel 22 and the gear shaft 24, therefore gear shaft 24 rotates thereupon, align with graduation line on the casing 01 according to the indicated numerical value of dial 25, forward speed-regulating hand wheel 22 to required velocity location, gear shaft 24 moves up and down by the engagement drive speed change slide plate of the toothed surface of gear on it and variable speed plate 26, the speed change support 4 that is connected with speed change slide plate 26 also moves up and down, speed change support 4 drives friction disk 2 again and telophragma 5 moves, thereby friction radius between friction disk 2 and the driving disc 1 and the friction radius between telophragma 5 and the driven disc 6 have been changed, therefore changed the rotating speed of driven disc 6, realized speed regulation process, after rotating speed is transferred to required numerical value, tighten locking handwheel 21, make speed-regulating hand wheel 22 fixing.The α angle is changeless in speed regulation process.When output shaft 12 loads increase, required torque also increases, at this moment output shaft 12 has certain pressure with respect to output shaft zygote 10, output shaft zygote 10 increases with pressure between the cam-shaped face that driven disc zygote 7 is meshed, the pressure of spring 8 also increases, make driven disc zygote 7 move axially, because the α angle immobilizes, thereby make between driven disc 6 and the telophragma 5, the pressure between friction disk 2 and the driving disc 1 increases, reach the purpose of automatic pressurization, for the maintenance rotating speed is constant, the corresponding increasing of moment of torsion of motor 17 outputs.
The described a kind of pair of Friction Disk Stepless Speed Change Device of present embodiment, structure is comparatively simple, and volume is little, and is in light weight, and length is respectively 160mm, 170mm, 140mm, and weight is about 3kg.Slip gear 02 stable drive, reliable, velocity ratio can reach 1:20, and speed regulating mechanism 04 adopts manual governing, and speed governing is freely, and is easy to use.
Claims (4)
1, a kind of pair of Friction Disk Stepless Speed Change Device, mainly comprise casing (01), slip gear (02), pressurization and output mechanism (03) and speed regulating mechanism (04) automatically, casing (01) is a box shaped body, one end is fixed with the end cap that is connected with motor or other power plant, slip gear (02) and automatic pressurization and output mechanism (03) are installed in the casing (01), speed regulating mechanism (04) is installed in a side of casing (01), it is characterized in that:
1) slip gear (02) is by driving disc (1), friction disk (2), land (3), speed change support (4), telophragma (5) and driven disc (6) are formed, driving disc (1) is for having the friction disk of conical surface, position of center line has the hole, match with the output shaft of motor or other power plant and to be connected, friction disk (2) is an annual disk, its annular end face cooperates with the conical surface pressing friction of driving disc (1), friction disk (2), land (3) and telophragma (5) are fixedly installed togather, and has same center line, the center line of this center line and driving disc (1) has an inclined angle alpha, the α scope is in 4 °-20 °, at land (3) and telophragma (5) joint speed change support (4) is installed, telophragma (5) is for having the friction disk of the conical surface identical with driving disc (1), driven disc (6) is and the identical annual disk of friction disk (2), cooperate with telophragma (5) pressing friction, driven disc (6) has same center line with driving disc (1);
2) automatically the pressurization and output mechanism (03) by driven disc zygote (7), spring (8), mandrel (9), output shaft zygote (10), axle sleeve (11) and output shaft (12) are formed, driven disc zygote (7) is fixedly connected with driven disc (6), and on same center line, driven disc zygote (7) has center hole, spring (8) and mandrel (9) wherein are installed, output shaft zygote (10) one ends and the engagement of driven disc zygote (7) end face, output shaft zygote (10) the other end is connected with output shaft (12), and axle sleeve (11) is enclosed within outside driven disc zygote (7) and the output shaft zygote (10) and is supported on the casing (01);
3) speed regulating mechanism (04) is by locking handwheel (21), speed-regulating hand wheel (22), gear shaft (24), dial (25) and speed change slide plate (26) are formed, speed change slide plate (26) is installed on the casing madial wall and is connected with speed change support (4), speed change slide plate (26) has toothed surface, the end that gear shaft (24) has gear meshes with speed change slide plate (26) in casing, the other end of gear shaft (24) is positioned at outside the casing (01), dial (25) is installed successively, speed-regulating hand wheel (22), locking handwheel (21), locking handwheel (21) is positioned at outermost end, dial (25) is fixed on the speed-regulating hand wheel (22), casing has corresponding graduation line on (01), and speed-regulating hand wheel (22) is fixedlyed connected with gear shaft (24).
2, a kind of pair of Friction Disk Stepless Speed Change Device according to claim 1 is characterized in that: all have the fans of cooling off usefulness on the back side of the conical surface of the driving disc (1) of slip gear (02) and telophragma (5).
3, a kind of pair of Friction Disk Stepless Speed Change Device according to claim 1 is characterized in that: the driven disc zygote (7) in pressurization and the output mechanism (03) is connected with a joggle by corresponding ups and downs cam-shaped end face with output shaft zygote (10) automatically.
4, a kind of pair of Friction Disk Stepless Speed Change Device according to claim 1 is characterized in that: the tapped hole that reference level is all arranged and can be connected with other corollary equipment on other untapped wall of casing (01).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247856 CN2175851Y (en) | 1993-12-21 | 1993-12-21 | Double friction-disk stepless speed regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247856 CN2175851Y (en) | 1993-12-21 | 1993-12-21 | Double friction-disk stepless speed regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2175851Y true CN2175851Y (en) | 1994-08-31 |
Family
ID=33820162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93247856 Expired - Fee Related CN2175851Y (en) | 1993-12-21 | 1993-12-21 | Double friction-disk stepless speed regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2175851Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758953A (en) * | 2014-01-22 | 2014-04-30 | 南通西马特机器制造有限公司 | Mechanical stepless speed regulator |
| CN105258943A (en) * | 2015-10-14 | 2016-01-20 | 北京曙光航空电气有限责任公司 | Load test stand of linear actuator |
| CN107571116A (en) * | 2017-10-25 | 2018-01-12 | 德清凯晶光电科技有限公司 | Speed-adjustable plane lapping polishing machine |
| CN108426011A (en) * | 2018-03-08 | 2018-08-21 | 徐丰 | Passively deflect more cart-wheel stepless speed variators |
| CN113049487A (en) * | 2021-03-22 | 2021-06-29 | 北京航空航天大学 | Test system and method for calculating friction coefficient of inclined roller type friction disc |
-
1993
- 1993-12-21 CN CN 93247856 patent/CN2175851Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758953A (en) * | 2014-01-22 | 2014-04-30 | 南通西马特机器制造有限公司 | Mechanical stepless speed regulator |
| CN105258943A (en) * | 2015-10-14 | 2016-01-20 | 北京曙光航空电气有限责任公司 | Load test stand of linear actuator |
| CN107571116A (en) * | 2017-10-25 | 2018-01-12 | 德清凯晶光电科技有限公司 | Speed-adjustable plane lapping polishing machine |
| CN108426011A (en) * | 2018-03-08 | 2018-08-21 | 徐丰 | Passively deflect more cart-wheel stepless speed variators |
| CN113049487A (en) * | 2021-03-22 | 2021-06-29 | 北京航空航天大学 | Test system and method for calculating friction coefficient of inclined roller type friction disc |
| CN113049487B (en) * | 2021-03-22 | 2022-03-18 | 北京航空航天大学 | Test system and method for calculating friction coefficient of inclined roller type friction disc |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |