CN114544179A - Drive shaft butt joint device - Google Patents
Drive shaft butt joint device Download PDFInfo
- Publication number
- CN114544179A CN114544179A CN202210348755.5A CN202210348755A CN114544179A CN 114544179 A CN114544179 A CN 114544179A CN 202210348755 A CN202210348755 A CN 202210348755A CN 114544179 A CN114544179 A CN 114544179A
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- 210000001503 joint Anatomy 0.000 title claims abstract description 36
- 238000003032 molecular docking Methods 0.000 claims description 34
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
Abstract
The invention provides a driving shaft butt joint device, which relates to the technical field of engine testing and comprises a rack base, wherein a lifting cylinder is arranged on the rack base, and a supporting platform is arranged at the upper end of the lifting cylinder; and a support frame and a rotary cylinder are arranged on the support platform. The butt joint rotating gear of the drive shaft butt joint device is fixed on the drive shaft, and the lifting cylinder lifts the support platform to lift the butt joint rotating gear, so that the height of the drive shaft is adjusted, and a female spline shaft on the drive shaft and a male spline shaft on an engine are conveniently coaxial; in order to enable the female spline shaft to be smoothly butted with the male spline shaft, the rotary cylinder enables the butted rotary gear to rotate, and further enables the driving shaft to rotate, so that the female spline shaft on the driving shaft can smoothly correspond to the male spline shaft on the engine, spline teeth are prevented from abutting against each other, and the driving shaft connection efficiency of the dynamometer and the engine is improved.
Description
Technical Field
The invention relates to the technical field of engine testing, in particular to a driving shaft butt joint device.
Background
In the field of engine testing, in order to test engine performance, it is necessary to perform performance testing on engine loading under conditions that simulate engine operating conditions (e.g., engine intake, engine exhaust, engine cooling system, etc.). The engine is loaded in a way that a dynamometer is used for applying torque load to the engine through a driving shaft.
In order to improve the efficiency and save the preparation time of an engine in a test room, a spline shaft is arranged on the engine side of a driving shaft for connection, a female spline shaft is fixed on the driving shaft, a male spline shaft is fixed on the engine, and the driving shaft is automatically connected through the spline shafts in the positioning process of the engine.
When in butt joint, the male spline shaft and the female spline shaft are coaxial in position, and the male spline shaft and the female spline shaft can be smoothly in butt joint. Meanwhile, the drive shaft with the female spline shaft is required to slowly rotate together during butt joint so as to avoid the problem that the spline teeth are butted and cannot be smoothly butted.
Disclosure of Invention
The invention aims to provide a drive shaft butt joint device to solve the technical problem that a drive shaft is difficult to butt joint smoothly.
The invention provides a drive shaft butt joint device which comprises a rack base and a butt joint rotating gear sleeved on a drive shaft, wherein a lifting cylinder is arranged on the rack base, and a support frame is arranged at the upper end of the lifting cylinder; the support frame is provided with a support frame and a rotary cylinder;
the butt joint rotating gear comprises a butt joint rotating gear body and a supporting sleeve, and one end of the butt joint rotating gear body is connected with the supporting sleeve;
a first driving gear assembly and a first supporting wheel are arranged on the supporting frame; the first driving gear assembly comprises a driven gear, a second supporting wheel and a driving gear which are coaxially arranged, the driving gear is meshed with the butt joint rotating gear body, the first supporting wheel and the second supporting wheel are matched to support the supporting sleeve, and the rotating cylinder is used for enabling the driven gear to rotate.
In an alternative embodiment, the support frame is provided with a rotary idle gear, a driving wheel provided on the rotary cylinder is meshed with the rotary idle gear, and the rotary idle gear is meshed with the driven gear.
In an optional embodiment, a cylinder fixing block for fixing the rotary cylinder on the support frame is arranged on the support frame;
and two third supporting wheels for supporting the driving shaft are arranged on the cylinder fixing block.
In an alternative embodiment, the device further comprises a clamping device, wherein the clamping device comprises two clamping arms, and one ends of the two clamping arms are hinged to the stand base;
the clamping arm is provided with a guide hole, the support frame is provided with two guide posts, and each guide post correspondingly penetrates through one guide hole;
the lifting cylinder enables the supporting frame to ascend, and the supporting frame enables one ends, far away from the rack base, of the two clamping arms to move oppositely and clamp the butt joint rotating gear.
In an alternative embodiment, a clamping wheel is arranged at one end of the clamping arm far away from the rack base, the clamping wheel is positioned at the upper end of the butt joint rotating gear, and the two clamping wheels are used for clamping the butt joint rotating gear in a matching mode.
In an optional embodiment, the supporting frame is provided with clamping grooves corresponding to the clamping arms, and each clamping arm is correspondingly arranged in one of the clamping grooves.
In an alternative embodiment, a fixed block is provided on the gantry base, and the clamping arm is hinged to the fixed block.
In an optional embodiment, an installation plate is arranged on the rack base, two fixed blocks are arranged on two sides of the installation plate, and the installation direction of screws on the fixed blocks is perpendicular to the ascending direction of a cylinder of a lifting cylinder; and a second gasket component is arranged between the fixed block and the mounting plate.
In an alternative embodiment, a first shim assembly is provided between the support platform and the support frame.
In an alternative embodiment, the inlet and outlet of the rotary cylinder are provided with regulating valves.
According to the driving shaft butting device, the butting rotary gear is fixed on the driving shaft, and the lifting cylinder lifts the supporting platform to lift the butting rotary gear, so that the height of the driving shaft is adjusted, and a female spline shaft on the driving shaft is coaxial with a male spline shaft on an engine conveniently; in order to enable the female spline shaft to be smoothly butted with the male spline shaft, the rotary cylinder enables the butted rotary gear to rotate, and further enables the driving shaft to rotate, so that the female spline shaft on the driving shaft can smoothly correspond to the male spline shaft on the engine, and the connecting efficiency of the dynamometer and the driving shaft of the engine is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a drive shaft docking device and a dynamometer according to an embodiment of the present invention;
FIG. 2 is a partially enlarged view A of the schematic structural diagram of the drive shaft docking device shown in FIG. 1 connected to the dynamometer;
fig. 3 is a schematic structural diagram of a drive shaft docking device according to an embodiment of the present invention;
fig. 4 is a partially enlarged view B of a structural schematic view of the drive shaft docking device shown in fig. 3;
fig. 5 is a schematic structural diagram of another angle of the driving shaft docking device according to the embodiment of the present invention.
Icon: 100-a dynamometer; 200-a drive shaft; 300-female spline shaft; 400-mating rotating gears; 401-a support sleeve; 402-mating a rotating gear body; 500-lifting cylinder; 600-a support frame; 700-a support platform; 800-a first drive gear assembly; 801-driven gear; 802-a second support wheel; 803-driving the gears; 900-cylinder fixing block; 110-a third support wheel; 120-a rotary cylinder; 130-a regulating valve; 140-a gantry base; 150-a mounting plate; 160-fixed block; 170-a clamping arm; 180-driving wheels; 190-a rotary idler; 210-a first gasket assembly; 220-a clamping wheel; 230-a guide hole; 240-guide posts; 250-a first support wheel; 260-second gasket assembly.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a driving shaft docking apparatus, including a rack base 140 and a docking rotary gear 400 sleeved on a driving shaft 200, wherein a lifting cylinder 500 is disposed on the rack base 140, and a support frame 600 is disposed at an upper end of the lifting cylinder 500; the supporting frame 600 is provided with a supporting frame 600 and a rotary cylinder 120;
the butt joint rotary gear 400 comprises a butt joint rotary gear body 402 and a support sleeve 401, wherein the support sleeve 401 is connected to one end of the butt joint rotary gear body 402; typically the counter rotating gear body 402 and the support sleeve 401 are integral.
A first driving gear assembly 800 and a first supporting wheel 250 are arranged on the supporting frame 600; the first driving gear assembly 800 includes a driven gear 801, a second supporting wheel 802 and a driving gear 803, which are coaxially disposed, the driving gear 803 is engaged with the docking rotating gear body 402, the first supporting wheel 250 and the second supporting wheel 802 cooperatively support the supporting sleeve 401, and the rotating cylinder 120 is used for rotating the driven gear 801.
In some embodiments, the drive shaft docking device is used to connect the drive shaft 200 of the dynamometer 100 with the engine, the drive shaft 200 has certain flexibility, and is generally a flexible universal joint shaft, the female spline shaft 300 is arranged on the drive shaft 200, and the male spline shaft is arranged on the engine; in order to enable the female spline shaft 300 of the drive shaft 200 and the male spline shaft of the engine to be automatically butted against each other, it is necessary to raise the female spline shaft 300 of the drive shaft 200 to a height coaxial with the male spline shaft and to rotate the female spline shaft 300 so as to be butted against the male spline shaft.
The lifting cylinder 500 on the rack base 140 on the driving shaft docking device can lift the supporting frame 600, so as to adjust the height on the supporting frame 600, the docking rotary gear 400 on the driving shaft 200 is located on the supporting frame 600, the docking rotary gear 400 is lifted along with the lifting of the supporting frame 600, and the female spline shaft 300 and the male spline shaft of the driving shaft 200 can be coaxial.
The rotary cylinder 120 rotates the driven gear 801, so that the driving gear 803 drives the butt rotary gear body 402 to rotate, thereby realizing the rotation of the driving shaft 200, so that the female spline shaft 300 on the driving shaft 200 rotates, and the female spline shaft 300 can be connected with the male spline shaft, thereby realizing the automatic engine connection of the driving shaft 200, namely the automatic connection of the dynamometer 100 and the engine.
After the female spline shaft 300 on the driving shaft 200 is butted with the male spline shaft on the engine; the lift cylinder 500 lowers the support frame 600, and the support frame 600 is separated from the drive shaft 200, thereby performing an engine operation test.
The drive shaft 200 may be provided with a male spline shaft, and the engine may be provided with a female spline shaft 300.
The driven gear 801, the second supporting wheel 802 and the driving gear 803 are coaxially arranged, and the second supporting wheel 802 and the first supporting wheel 250 are matched to support the supporting sleeve 401, so that rolling friction is formed between the butt joint rotating gear 400 and the supporting frame 600, and the difficulty of rotating the driving shaft 200 through the butt joint rotating gear 400 is reduced; and the first support wheel 250 and the second support wheel 802 are the same height and in the same plane.
Referring to fig. 3 and 5, in an alternative embodiment, a rotary idle gear 190 is provided on the support frame 600, a driving wheel 180 provided on the rotary cylinder 120 is engaged with the rotary idle gear 190, and the rotary idle gear 190 is engaged with the driven gear 801.
In some embodiments, the support frame 600 is provided with a rotary idle gear 190, the driving wheel 180 on the rotary cylinder 120 is meshed with the rotary idle gear 190, and the rotary idle gear 190 is further meshed with the driven gear 801, so that the rotary cylinder 120 drives the driving shaft 200 to rotate.
In an alternative embodiment, a cylinder fixing block 900 for fixing the rotary cylinder 120 on the support frame 600 is disposed on the support frame 600;
the cylinder fixing block 900 is provided with two third support wheels 110 for supporting the driving shaft 200.
In order to support the driving shaft 200 more stably, two third supporting wheels 110 are further disposed on the cylinder fixing block 900 disposed on the supporting frame 600, and the third supporting wheels 110 are supported at the lower end of the driving shaft 200; the first support wheel 250, the second support wheel 802 and the two third support wheels 110 cooperate to bring a portion of the drive shaft 200 in a horizontal state, i.e. the axis of the portion of the drive shaft 200 coincides with the axis of the shaft of the engine.
This cylinder fixed block 900 can make firm the fixing on support frame 600 of revolving cylinder 120, makes the lift that revolving cylinder 120 can be stable, and when revolving cylinder 120 worked, revolving cylinder 120 position was firm not rocked, improved the rotatory accuracy nature of drive shaft 200, made female spline shaft 300 and male spline shaft can dock smoothly.
Referring to fig. 3, 4 and 5, in an alternative embodiment, the clamping device further includes two clamping arms 170, and one end of each of the two clamping arms 170 is hinged to the gantry base 140;
a guide hole 230 is formed in the clamping arm 170, two guide posts 240 are arranged on the supporting frame 600, and each guide post 240 correspondingly penetrates through one guide hole 230;
the lifting cylinder 500 lifts the support frame 600 while moving the guide post 240 in the guide hole 230, so that the ends of the two clamp arms 170, which are away from the stage base 140, move toward each other and clamp the counter rotating gear 400, thereby clamping the driving shaft 200.
In an alternative embodiment, a clamping wheel 220 is disposed at an end of the clamping arm 170 away from the stage base 140, the clamping wheel 220 is located at an upper end of the docking rotary gear 400, and the two clamping wheels 220 are used for cooperatively clamping the docking rotary gear 400.
In some embodiments, two clamping arms 170 are hinged to the platform base 140, the clamping arms 170 have guide holes 230, when the supporting frame 600 is lifted, the guide posts 240 move along the guide holes 230, since the guide posts 240 lift vertically along with the supporting frame 600, and the two guide holes 230 form an inverted splayed shape, when the guide posts 240 move up and down, the two clamping arms 170 move towards or away from each other.
Generally, the upper end of the clamp arm 170 has a certain curvature, and when the two clamp arms 170 move toward each other, the clamp wheel 220 on the clamp arm 170 can move to the upper end of the docking rotary gear 400 and abut against the docking rotary gear 400. Thus, when the driving shaft 200 is not smoothly butted, the clamping device can ensure that the driving shaft 200 is not askew, and the female spline shaft 300 and the male spline shaft are butted under the condition that the rotating cylinder 120 rotates at a low speed.
And because the lifting of the supporting frame 600 simultaneously causes the clamping device to clamp the docking rotary gear 400, the linkage of the lifting cylinder 500 and the clamping device is realized, the linkage is realized by a mechanical mechanism, the linkage synchronization is realized by non-program control, and the working reliability of the driving shaft docking device is ensured.
The lifting cylinder 500 on the rack base 140 can lift the support frame 600, the docking rotary gear 400 follows the lifting of the support frame 600, so that the female spline shaft 300 of the driving shaft 200 and the male spline shaft can be coaxial, and in the process of lifting the support frame 600, the guide post 240 moves in the guide hole 230, so that one ends of the two clamping arms 170, which are far away from the rack base 140, move towards each other and clamp the docking rotary gear 400; after the female spline shaft 300 on the driving shaft 200 is butted with the male spline shaft on the engine; the lift cylinder 500 lowers the support bracket 600 and the support bracket 600 is disengaged from the driving shaft 200, and at the same time, the end of the clamp arm 170, which is far from the stage base 140, is moved in the reverse direction and is far from the counter rotating gear 400, so that the running test of the engine can be performed.
In an alternative embodiment, the supporting frame 600 is provided with a clamping groove corresponding to the clamping arm 170, and each clamping arm 170 is correspondingly arranged in one of the clamping grooves.
In an alternative embodiment, a fixing block 160 is provided on the stage base 140, and the clamping arm 170 is hinged to the fixing block 160.
In an alternative embodiment, a mounting plate 150 is disposed on the stage base 140, two fixing blocks 160 are disposed on two sides of the mounting plate 150, and the mounting direction of the screws on the fixing blocks 160 is perpendicular to the cylinder lifting direction of the lifting cylinder 500; a second gasket assembly 260 is disposed between the fixed block 160 and the mounting plate 150.
In some embodiments, in order to enable the clamping device to better clamp the docking rotary gear 400, the mounting plate 150 is disposed on the rack base 140, the fixing block 160 is connected to the mounting plate 150, the clamping arm 170 is hinged to the fixing block 160, in order to adjust the distance between the hinged positions of the two clamping arms 170, the second gasket assembly 260 is disposed between the fixing block 160 and the mounting plate 150, the second gasket assembly 260 comprises a plurality of gaskets, the number of the gaskets of the second gasket assembly 260 is adjusted, the distance between the two fixing blocks 160 is further adjusted, and finally, the tightness of the clamping device clamping the docking rotary gear 400 is adjusted.
In an alternative embodiment, a first shim assembly 210 is disposed between the support platform 700 and the support stand 600.
In an alternative embodiment, the rotary cylinder 120 is provided with a regulating valve 130 at both the inlet and outlet thereof.
The lifting height of the support frame 600 is adjusted by adjusting the number of the gaskets contained in the first gasket assembly 210, a position sensor is arranged on the lifting cylinder 500, and the lifting height and the falling height of the lifting cylinder 500 are determined by the position sensor; the lifting height of the lifting cylinder 500 is generally fixed, when the lifting cylinder 500 is required to enable the support frame 600 to be located at the highest position, at the moment, the driving shaft 200 is higher than or lower than the shaft of the engine, the height of the driving shaft 200 is adjusted by changing the number of the gaskets in the first gasket assembly 210, and then the female spline shaft 300 of the driving shaft 200 and the male spline shaft are enabled to be coaxial.
The adjustment of the rotation speed of the drive shaft 200 is achieved by adjusting the adjusting valve 130 of the rotary cylinder 120 to achieve stepless adjustment of the drive shaft 200.
The butt joint rotating gear 400 of the drive shaft butt joint device provided by the invention is fixed on the drive shaft 200, and the lifting cylinder 500 lifts the butt joint rotating gear 400 by lifting the supporting platform 700, so that the height of the drive shaft 200 is adjusted, and the female spline shaft 300 on the drive shaft 200 is conveniently coaxial with the male spline shaft on the engine; in order to enable the female spline shaft 300 to be smoothly butted with the male spline shaft, the rotary cylinder 120 enables the butted rotary gear 400 to rotate, and further enables the driving shaft 200 to rotate, so that the key teeth of the female spline shaft 300 on the driving shaft 200 can smoothly correspond to the key grooves of the male spline shaft, and the connection efficiency of the dynamometer 100 and an engine is improved.
The driving shaft docking device is used for automatic docking of the driving shaft 200, and is a driving shaft 200 lifting and rotating device integrating rotation and lifting of the driving shaft 200. The drive shaft butt joint device not only can realize stable low-speed rotation and stepless adjustment of the rotation speed of the drive shaft 200, but also can realize the lifting of the drive shaft 200 supported by 4 points, thereby ensuring that the axial leads of the lifted engine shaft, the drive shaft 200 and the dynamometer 100 are coaxial. In addition, a driving shaft 200 clamping device which automatically clamps the driving shaft 200 together with lifting is arranged, so that the driving shaft 200 can not bend even under the action of external force of butting of the driving shaft 200, the coaxial state is always kept, and the stable and reliable automatic butting of the driving shaft 200 is realized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The drive shaft butt joint device is characterized by comprising a rack base (140) and a butt joint rotating gear (400) sleeved on a drive shaft (200), wherein a lifting cylinder (500) is arranged on the rack base (140), and a supporting platform (700) is arranged at the upper end of the lifting cylinder (500); a support frame (600) and a rotary cylinder (120) are arranged on the support platform (700);
the butt joint rotating gear (400) comprises a butt joint rotating gear body (402) and a supporting sleeve (401), and one end of the butt joint rotating gear body (402) is connected with the supporting sleeve (401);
a first driving gear assembly (800) and a first supporting wheel (250) are arranged on the supporting frame (600); the first driving gear assembly (800) comprises a driven gear (801), a second supporting wheel (802) and a driving gear (803) which are coaxially arranged, the driving gear (803) is meshed with the butt joint rotating gear body (402), the first supporting wheel (250) and the second supporting wheel (802) are matched to support the supporting sleeve (401), and the rotating cylinder (120) is used for enabling the driven gear (801) to rotate.
2. The drive shaft docking device according to claim 1, wherein a rotary idle gear (190) is provided on the support frame (600), a drive wheel (180) provided on the rotary cylinder (120) is engaged with the rotary idle gear (190), and the rotary idle gear (190) is engaged with the driven gear (801).
3. The drive shaft docking device according to claim 2, wherein a cylinder fixing block (900) for fixing the rotary cylinder (120) to the support frame (600) is provided on the support frame (600);
and two third supporting wheels (110) for supporting the driving shaft (200) are arranged on the cylinder fixing block (900).
4. The drive shaft docking device according to claim 3, further comprising a clamping device comprising two clamping arms (170), wherein one ends of the two clamping arms (170) are hingedly disposed on the gantry base (140);
a guide hole (230) is formed in the clamping arm (170), two guide columns (240) are arranged on the supporting frame (600), and each guide column (240) correspondingly penetrates through one guide hole (230);
the lifting cylinder (500) lifts the support frame (600), and the support frame (600) enables one ends of the two clamping arms (170) far away from the rack base (140) to move towards each other and clamp the butt rotary gear (400).
5. The drive shaft docking device according to claim 4, wherein a clamping wheel (220) is provided at an end of the clamping arm (170) remote from the gantry base (140), the clamping wheel (220) being located at an upper end of the docking rotary gear (400), the two clamping wheels (220) being for cooperatively clamping the docking rotary gear (400).
6. The drive shaft interfacing apparatus of claim 5, wherein said support frame (600) is provided with a clamping groove corresponding to said clamping arm (170), each of said clamping arms (170) being disposed in a corresponding one of said clamping grooves.
7. Drive shaft docking device according to claim 4, characterized in that a fixing block (160) is provided on the gantry base (140), the clamping arm (170) being hinged on the fixing block (160).
8. The drive shaft docking device according to claim 7, wherein a mounting plate (150) is provided on the stage base (140), two fixing blocks (160) are provided on both sides of the mounting plate (150), and a mounting direction of screws on the fixing blocks (160) is perpendicular to a cylinder lifting direction of the lifting cylinder (500); a second gasket assembly (260) is arranged between the fixed block (160) and the mounting plate (150).
9. The drive shaft docking device according to claim 1, wherein a first shim assembly (210) is provided between the support platform (700) and the support bracket (600).
10. The drive shaft docking device according to claim 1, wherein a regulating valve (130) is provided at each of an air inlet and an air outlet of the rotary cylinder (120).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210348755.5A CN114544179A (en) | 2022-04-01 | 2022-04-01 | Drive shaft butt joint device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210348755.5A CN114544179A (en) | 2022-04-01 | 2022-04-01 | Drive shaft butt joint device |
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| Publication Number | Publication Date |
|---|---|
| CN114544179A true CN114544179A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210348755.5A Pending CN114544179A (en) | 2022-04-01 | 2022-04-01 | Drive shaft butt joint device |
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| CN (1) | CN114544179A (en) |
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