CN209110507U - A kind of transmission shaft hold-down devices - Google Patents
A kind of transmission shaft hold-down devices Download PDFInfo
- Publication number
- CN209110507U CN209110507U CN201822075023.5U CN201822075023U CN209110507U CN 209110507 U CN209110507 U CN 209110507U CN 201822075023 U CN201822075023 U CN 201822075023U CN 209110507 U CN209110507 U CN 209110507U
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- CN
- China
- Prior art keywords
- transmission shaft
- mounting plate
- vertical rack
- pressed pole
- locating piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of transmission shaft hold-down devices, including workbench, Vertical Rack, oil cylinder, guide rail, sliding block, mounting plate, down-pressed pole mounting base, down-pressed pole, positioning mechanism, clamp system and position-limit mechanism, Vertical Rack is fixed on the table, the connection of the top of oil cylinder and Vertical Rack, the piston rod of oil cylinder is connect with the lifting guide pad of installation back, the leading flank of Vertical Rack is equipped with guide rail, mounting plate is slidably connected on the guide rail of Vertical Rack, it is connect at the top of down-pressed pole mounting base and mounting plate leading flank, the top of down-pressed pole is connect with down-pressed pole mounting base, positioning mechanism and clamp system are both connected to the leading flank of mounting plate, the connection of the bottom of position-limit mechanism and Vertical Rack and position-limit mechanism are located at the lower section of mounting plate.The utility model can push the transmission shaft of different model, and transmission shaft is pressed in universal joint, thus realization and universal joint close-fitting, safe operation is simple, pushes process precise and high efficiency, be conducive to assembly line batch production.
Description
Technical field
The utility model belongs to field of machining, specifically, be in the assembling process of transmission shaft, to transmission shaft with
Universal joint carries out transmission shaft hold-down devices used in the pushing process in bolt assembly.
Background technique
During producing truck drive shaft, it usually needs come fixed conveyor axis and universal joint using pin shaft, and it is universal
The construction of section is complex, carry out bolt when need for transmission shaft pressing to be attached in universal joint to universal joint phase close-fitting,
The mode that traditional transmission shaft press-fit approach mostly uses greatly worker operation to be pressed, efficiency is lower, in particular for different model
Transmission shaft and universal joint phase close-fitting when, need cumbersome artificial press fitting to operate, and be manually pressed operation and be easy to appear mistake, drop
Low production efficiency is unfavorable for assembly line batch production.
Summary of the invention
Technical problem to be solved in the utility model is to be provided under a kind of transmission shaft in view of the above shortcomings of the prior art
Pressure device, this transmission shaft hold-down devices can push the transmission shaft of different model, transmission shaft pressed in universal joint, from
And realization and universal joint close-fitting, safe operation is simple, pushes process precise and high efficiency, is conducive to assembly line batch production.
To realize the above-mentioned technical purpose, the technical solution that the utility model is taken are as follows:
A kind of transmission shaft hold-down devices, including workbench, Vertical Rack, oil cylinder, guide rail, sliding block, mounting plate, down-pressed pole peace
Seat, down-pressed pole, positioning mechanism, clamp system and position-limit mechanism are filled, the Vertical Rack is fixed on the table, the oil cylinder
Cylinder body is connect with the top of the Vertical Rack, the lifting guide pad of the piston-rod end of the oil cylinder and the installation back
Connection, the leading flank of the Vertical Rack are equipped with guide rail, and the mounting plate is slidably connected at leading for Vertical Rack by sliding block
On rail, it is connect at the top of the down-pressed pole mounting base and the mounting plate leading flank, the top of the down-pressed pole and the down-pressed pole
Mounting base connection, the positioning mechanism and clamp system are both connected on the leading flank of the mounting plate and positioning mechanism and clamping
Mechanism is located at the lower section of the down-pressed pole, and the position-limit mechanism is connect with the bottom of the Vertical Rack and position-limit mechanism is located at institute
State the lower section of mounting plate, the positioning mechanism and clamp system be used to fix to clamp transmission shaft and the top of the transmission shaft with
The bottom end of the down-pressed pole contacts, and the position-limit mechanism is limited for moving down distance to mounting plate.
As the further improved technical solution of the utility model, the middle part of the Vertical Rack is equipped with through slot, described
The lifting guide pad of installation back can be inserted into the through slot to which the piston rod with the oil cylinder at the top of the Vertical Rack is last
End connection.
As the further improved technical solution of the utility model, the positioning mechanism includes locating piece mounting base and imitates
Shape locating piece, the locating piece mounting base and the leading flank of the mounting plate are connected by screw to, the bottom of the profiling locating piece
Portion is equipped with plug, and the upper surface side of the locating piece mounting base is equipped with slot compatible with the plug, and the profiling is fixed
Position block is plugged in the slot of the locating piece mounting base to realize that profiling locating piece and the locating piece are installed by plug
The connection of seat, the profiling locating piece are equipped with locating slot compatible with the outer wall shape of transmission shaft, the profiling locating piece
It is built-in with for the magnetite attracting with transmission shaft.
As the further improved technical solution of the utility model, the clamp system includes clamping cylinder, the company of clamping
Block and transmission shaft gripping block are connect, the clamping cylinder is connect with the leading flank of the mounting plate, the both ends point of the clamping cylinder
It is not connected with clamping link block and two clamping link blocks are oppositely arranged, the clamping link block is equipped with for placing transmission shaft
The groove of gripping block, two it is described clamp link block grooves in be placed with transmission shaft gripping block, the transmission shaft gripping block
Clamping face be equipped with clamping slot compatible with the outer wall shape of transmission shaft.
As the further improved technical solution of the utility model, the positioning mechanism and clamp system have 2, and one
A positioning mechanism, a clamp system, another positioning mechanism and another clamp system are connected in turn described from top to bottom
On the leading flank of mounting plate.
As the further improved technical solution of the utility model, the position-limit mechanism includes gasket, guide rod and bottom
Seat, the pedestal are bolted to connection on Vertical Rack, and the guide rod is threadedly coupled with the thread groove of pedestal, described
Gasket is bolted to connection at the top of guide rod.
As the further improved technical solution of the utility model, the mounting plate is rectangle iron plate.
The utility model has the following beneficial effects:
(1) the utility model can push the transmission shaft of different model, and transmission shaft is pressed in universal joint, thus
Realization and universal joint close-fitting, whole operation is safe and simple, pushes process precise and high efficiency, is conducive to assembly line batch production.
(2) during the transmission shaft of the utility model pushes, transmission shaft can be firm by positioning mechanism and clamp system
On the longitudinal centre line of down-pressed pole, transmission shaft is pushed under the drive of oil cylinder, pushes process precise and high efficiency, it is easy to operate.
(3) magnetite built in positioning mechanism plays a part of to adsorb and position, transmission shaft is manually placed on positioning to transmission shaft
Safe operation is simple when in mechanism.
(4) it is directed to the transmission shaft of different model, the utility model is by replacing matching used down-pressed pole, profiling locating piece
With transmission shaft gripping block, guarantee that the transmission shaft of different model can be fixed on a mounting board with identical extension elongation, extension elongation
That is transmission shaft lower plane at a distance from mounting plate bottom, this make oil cylinder flexible stroke will not with the change of transmission shaft model and
Change, eliminates cumbersome desk checking, that is, ensure safety and also improve efficiency.
(5) for the oil cylinder of the utility model when stopping working, position-limit mechanism can play support and protection to the mounting plate of decline
Effect, extend service using life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the partial rear view of Fig. 1.
Fig. 3 is the structural schematic diagram of the mounting plate of the utility model.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structural schematic diagram of the positioning mechanism of the utility model.
Fig. 6 is the structural schematic diagram of the clamp system of the utility model.
Fig. 7 is the position-limit mechanism structural schematic diagram of the utility model.
Fig. 8 is the transmission shaft scheme of installation of the utility model.
Fig. 9 is that the transmission shaft of the utility model installs left view.
Specific embodiment
Specific embodiment of the present utility model is further illustrated below according to Fig. 1 to Fig. 9:
Referring to Fig. 1, a kind of transmission shaft hold-down devices, including workbench 1, Vertical Rack 2, oil cylinder 3, guide rail 4, sliding block 5, peace
Loading board 6, down-pressed pole mounting base 7, down-pressed pole 8, positioning mechanism 9, clamp system 10 and position-limit mechanism 11, the Vertical Rack 2 are solid
It is scheduled on workbench 1, the support as whole device.Referring to fig. 2, the top of the cylinder body of the oil cylinder 3 and the Vertical Rack 2
Connection, the piston-rod end of the oil cylinder 3 are connect with the lifting guide pad 6-1 at 6 back side of mounting plate, the Vertical Rack 2
Leading flank to be equipped with guide rail 4(as shown in Figure 9), the mounting plate 6 is slidably connected at the guide rail 4 of Vertical Rack 2 by sliding block 5
On, it is connect at the top of the down-pressed pole mounting base 7 and 6 leading flank of mounting plate, the top of the down-pressed pole 8 and the down-pressed pole
Mounting base 7 connects, the positioning mechanism 9 and clamp system 10 is both connected on the leading flank of the mounting plate 6 and positioning mechanism 9
It is located at the lower section of the down-pressed pole 8 with clamp system 10, the position-limit mechanism 11 connect and limits with the bottom of the Vertical Rack 2
Position mechanism 11 is located at the lower section of the mounting plate 6, and the positioning mechanism 9 and clamp system 10 are used to 13 fixing clamp of transmission shaft
The tight and top of the transmission shaft 13 is contacted with the bottom end of the down-pressed pole 8, the position-limit mechanism 11 for mounting plate 6 move down away from
From being limited.The oil cylinder 3 of the present embodiment drives mounting plate 6 on guide rail 4 along Z-direction elevating movement as power source.Under
Compression bar 8 is mounted in down-pressed pole mounting base 7, and down-pressed pole mounting base 7 is mounted on mounting plate 6, and down-pressed pole 8 is with mounting plate 6
Elevating movement together.
In the present embodiment, the positive Middle face of the Vertical Rack 2 offers bar shaped groove, 6 back side of mounting plate
Lifting guide pad 6-1 can be inserted into the bar shaped groove to which the piston-rod end of the oil cylinder 3 with 2 top of Vertical Rack connects
It connects.Guide rail 4 is connected through a screw thread with Vertical Rack 2, and the back side of Vertical Rack 2 is equipped with housing, for covering Vertical Rack 2
Upper space.
In the present embodiment, referring to Fig. 3 and Fig. 4, mounting plate 6 is rectangle iron plate, and the back side and the sliding block 5 of mounting plate 6 pass through
It is bolted, sliding block 5 is slidably connected with the guide rail 4 on Vertical Rack 2.Down-pressed pole mounting base 7 is L-type pedestal, and side passes through spiral shell
Bolt is mounted on mounting plate 6, is connected through a screw thread at the top of the other side and down-pressed pole 8.
In the present embodiment, referring to Fig. 5, the positioning mechanism 9 includes locating piece mounting base 9-1 and profiling locating piece 9-2,
The leading flank of the locating piece mounting base 9-1 and the mounting plate 6 are bolted, the bottom of the profiling locating piece 9-2
Equipped with plug, the upper surface side of the locating piece mounting base 9-1 is equipped with slot 9-3 compatible with the plug, described imitative
Shape locating piece 9-2 is plugged in the slot 9-3 of the locating piece mounting base 9-1 to realize profiling locating piece 9-2 by plug
With the grafting of the locating piece mounting base 9-1, the profiling locating piece 9-2 is equipped with and is adapted with the outer wall shape of transmission shaft 13
Locating slot 9-4, the profiling locating piece 9-2 is built-in with for the magnetite attracting with transmission shaft 13.Profiling locating piece 9-2's inserts
Head and the slot 9-3 clearance fit of locating piece mounting base 9-1, can fixed conveyor axis 13, be also easily removable replacement profiling and position
Block 9-2.
In the present embodiment, referring to Fig. 6, the clamp system 10 include clamping cylinder 10-1, clamp link block 10-2 and
Transmission shaft gripping block 10-3, the leading flank of the clamping cylinder 10-1 and the mounting plate 6 are bolted, the clamping gas
Clamping link block 10-2 has been bolted in the both ends of cylinder 10-1 respectively and two clamping link block 10-2 are oppositely arranged, described
It clamps link block 10-2 and is equipped with groove for placing transmission shaft gripping block 10-3, two described to clamp the recessed of link block 10-2
Transmission shaft gripping block 10-3 is placed in slot, the transmission shaft gripping block 10-3's clamps face equipped with the outer wall with transmission shaft 13
The compatible clamping slot of shape.The clamping cylinder 10-1 is for driving two transmission shaft gripping block 10-3 to loosen and clamp transmission
Axis 13.
In the present embodiment, referring to Fig. 1, the positioning mechanism 9 and clamp system 10 have 2, a positioning mechanism 9,
One clamp system 10, another positioning mechanism 9 and another clamp system 10 are connected to the mounting plate 6 in turn under upper
Leading flank on, the middle part and lower part for being mounted on 6 front leading flank of mounting plate is bolted in positioning mechanism 9 described in 2,
The middle part and lower part for being mounted on 6 front leading flank of mounting plate is bolted in clamp system 10 described in 2.The present embodiment
The length of mounting distance and transmission shaft 13 between two clamp systems 10 is adapted.
In the present embodiment, referring to Fig. 7, the position-limit mechanism 11 includes gasket 11-1, guide rod 11-2 and pedestal 11-3,
The pedestal 11-3 is bolted to connection on Vertical Rack 2, the thread groove spiral shell of the guide rod 11-2 and pedestal 11-3
Line connection, the gasket 11-1 are bolted to connection at the top of guide rod 11-2.When mounting plate 6 moves down, limit
Position mechanism 11 limits the mobile extreme lower position of mounting plate 6, and the gasket 11-1 of position-limit mechanism 11 has a buffering to make mounting plate 6
With, while when device stops working, avoid oil cylinder 3 without active force, mounting plate 6 is pushed to other mechanisms on workbench 1 automatically
It damages, position-limit mechanism 11 can play support and protective effect to mounting plate 6.Position-limit mechanism 11 is located at immediately below mounting plate 6.Limit
Position mechanism 11 effectively prevents the mobile pushing of transmission shaft excessively, avoids damaging universal joint, and avoid mounting plate 6 and exist
Movement excessively damages other mechanisms when oil cylinder 3 is without active force.
The down-pressed pole 8, profiling locating piece 9-2, transmission shaft gripping block 10-3 and transmission shaft 13 of the present embodiment match, and imitate
Shape locating piece 9-2, transmission shaft gripping block 10-3 can be replaced according to the sectional dimension of different transmission shafts 13, so that different biographies
Moving axis 13 is capable of fixing on mounting plate 6；Down-pressed pole 8 can be replaced according to the length of different transmission shafts 13, to guarantee transmission shaft
13 lower plane is consistent at a distance from 6 bottom of mounting plate.For different transmission shafts 13, profiling locating piece 9-2 and transmission axle clamp
Tight block 10-3 adapts to different cross sectional dimensions, and down-pressed pole 8 adapts to the length of transmission shaft 13, makes different transmission shafts 13
Lower plane is able to maintain unanimously at a distance from 6 bottom of mounting plate, i.e., the depression distance of different transmission shafts 13 is able to maintain unanimously, thus not
Depth with transmission shaft 13 and universal joint phase close-fitting is also able to maintain unanimously.
The present embodiment matching used profiling locating piece 9-2 and transmission shaft gripping block 10-3 are respectively in profiling locating piece 9-2
Under the action of interior magnetite and clamping cylinder 10-1, play a part of fixed to the transmission shaft 13 of different model and position, guarantees to pass
Moving axis 13 and down-pressed pole 8 can be on same central axis (referring to Fig. 8, Fig. 9).Matching used down-pressed pole 8 guarantees not simultaneous interpretation
Length of the moving axis 13 beyond mounting plate 6 is consistent.Down-pressed pole 8 with mounting plate 6 under the drive of oil cylinder 3 to the transmission shaft fixed
13 push.After the depth of transmission shaft 13 and universal joint close-fitting meets setting value, pushes process and complete, oil cylinder 3 is through 6 band of mounting plate
Dynamic down-pressed pole 8 rises back to initial position, simultaneously clamps on cylinder 10-1 and unclamps reset.
The present embodiment when specifically used, according to the model of transmission shaft 13 match down-pressed pole 8, profiling locating piece 9-2,
Transmission shaft gripping block 10-3, by matched down-pressed pole 8, profiling locating piece 9-2, transmission shaft gripping block 10-3 replacement to hold-down devices
On；Universal joint is socketed in the universal joint fixing seat 12 on workbench 1, guarantees the universal joint in universal joint fixing seat 12, pass
Transmission shaft 13 can be manually placed on the longitudinal centre line of down-pressed pole 8 by moving axis 13, down-pressed pole 8 on same central axis,
Contact 13 top of transmission shaft with the bottom end of down-pressed pole 8, the magnetite that down-pressed pole 8 passes through the profiling locating piece 9-2 in positioning mechanism 9
It is fixed, clamping cylinder 10-1 is then operated, clamping cylinder 10-1 drives two transmission shaft gripping block 10-3 to clamp transmission shaft 13, this
When transmission shaft 13 placement location be aligned and stablize with down-pressed pole 8.Oil cylinder 3 is started to work, the piston rod drive installation plate of oil cylinder 3
6 move down, so that down-pressed pole 8 and transmission shaft 13 be driven to move down, press to transmission shaft 13 in universal joint, until transmission
After the depth that axis 13 injects universal joint meets setting value, transmission shaft hold-down devices stopping movement keeping pressed status, completes transmission
Axis is pressed process.Carry out following punching pressing process.The entire pushing process of the present embodiment transmission shaft hold-down devices is accurately high
Effect is conducive to assembly line batch production.
The protection scope of the utility model includes but is not limited to embodiment of above, and the protection scope of the utility model is to weigh
Subject to sharp claim, replacement, deformation, the improvement that those skilled in the art that any pair of this technology is made is readily apparent that are each fallen within
The protection scope of the utility model.
Claims (7)
1. a kind of transmission shaft hold-down devices, which is characterized in that including workbench (1), Vertical Rack (2), oil cylinder (3), guide rail
(4), sliding block (5), mounting plate (6), down-pressed pole mounting base (7), down-pressed pole (8), positioning mechanism (9), clamp system (10) and limit
Position mechanism (11), the Vertical Rack (2) are fixed on workbench (1), the cylinder body and the Vertical Rack of the oil cylinder (3)
(2) top connection, the piston-rod end of the oil cylinder (3) and the lifting guide pad (6-1) at the mounting plate (6) back side connect
It connects, the leading flank of the Vertical Rack (2) is equipped with guide rail (4), and the mounting plate (6) is slidably connected at vertical by sliding block (5)
On the guide rail (4) of open frame (2), it is connect at the top of the down-pressed pole mounting base (7) and the mounting plate (6) leading flank, under described
The top of compression bar (8) is connect with the down-pressed pole mounting base (7), and the positioning mechanism (9) and clamp system (10) are both connected to
On the leading flank of the mounting plate (6) and positioning mechanism (9) and clamp system (10) are located at the lower section of the down-pressed pole (8), institute
State that position-limit mechanism (11) is connect with the bottom of the Vertical Rack (2) and position-limit mechanism (11) is located under the mounting plate (6)
Side, the positioning mechanism (9) and clamp system (10) are used to fix to clamp transmission shaft (13) and the top of the transmission shaft (13)
End is contacted with the bottom end of the down-pressed pole (8), and the position-limit mechanism (11) limits for moving down distance to mounting plate (6).
2. transmission shaft hold-down devices according to claim 1, which is characterized in that set in the middle part of the Vertical Rack (2)
There is through slot, the lifting guide pad (6-1) at mounting plate (6) back side can be inserted into the through slot thus with the Vertical Rack
(2) piston-rod end of the oil cylinder (3) at the top of connects.
3. transmission shaft hold-down devices according to claim 1, which is characterized in that the positioning mechanism (9) includes positioning
Block mounting base (9-1) and profiling locating piece (9-2), the locating piece mounting base (9-1) and the leading flank of the mounting plate (6) are logical
Screw connection is crossed, the bottom of the profiling locating piece (9-2) is equipped with plug, the upper surface one of the locating piece mounting base (9-1)
Side is equipped with slot (9-3) compatible with the plug, and the profiling locating piece (9-2) is plugged on the locating piece by plug
The connection of profiling locating piece (9-2) Yu the locating piece mounting base (9-1) are realized in the slot (9-3) of mounting base (9-1),
The profiling locating piece (9-2) is equipped with locating slot (9-4) compatible with the outer wall shape of transmission shaft (13), and the profiling is fixed
Position block (9-2) is built-in with for the magnetite attracting with transmission shaft (13).
4. transmission shaft hold-down devices according to claim 3, which is characterized in that the clamp system (10) includes clamping
Cylinder (10-1) clamps link block (10-2) and transmission shaft gripping block (10-3), the clamping cylinder (10-1) and the installation
The leading flank of plate (6) connects, and the both ends of the clamping cylinder (10-1), which are connected separately with, clamps link block (10-2) and two folders
It is tightly connected block (10-2) to be oppositely arranged, clamping link block (10-2) is equipped with for placing transmission shaft gripping block (10-3)
Groove, two it is described clamp link block (10-2) grooves in be placed with transmission shaft gripping block (10-3), the transmission axle clamp
The clamping face of tight block (10-3) is equipped with clamping slot compatible with the outer wall shape of transmission shaft (13).
5. transmission shaft hold-down devices according to claim 4, which is characterized in that the positioning mechanism (9) and clamping machine
Structure (10) has 2, a positioning mechanism (9), a clamp system (10), another positioning mechanism (9) and another clamping
Mechanism (10) is connected in turn from top to bottom on the leading flank of the mounting plate (6).
6. transmission shaft hold-down devices according to claim 1, which is characterized in that the position-limit mechanism (11) includes gasket
(11-1), guide rod (11-2) and pedestal (11-3), the pedestal (11-3) are bolted to connection in Vertical Rack (2)
On, the guide rod (11-2) is threadedly coupled with the thread groove of pedestal (11-3), gasket (11-1) company of being bolted
It connects at the top of guide rod (11-2).
7. transmission shaft hold-down devices according to claim 1, which is characterized in that the mounting plate (6) is rectangle iron
Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822075023.5U CN209110507U (en) | 2018-12-11 | 2018-12-11 | A kind of transmission shaft hold-down devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822075023.5U CN209110507U (en) | 2018-12-11 | 2018-12-11 | A kind of transmission shaft hold-down devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209110507U true CN209110507U (en) | 2019-07-16 |
Family
ID=67207900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822075023.5U Expired - Fee Related CN209110507U (en) | 2018-12-11 | 2018-12-11 | A kind of transmission shaft hold-down devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209110507U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370003A (en) * | 2019-08-15 | 2019-10-25 | 浙江科力车辆控制***有限公司 | Vehicle hydraulic pressure load lifting cylinder finger assembles device |
| CN113020934A (en) * | 2021-03-04 | 2021-06-25 | 山东大学 | Automatic intelligent assembling device for vertical hydraulic oil cylinder and working method thereof |
-
2018
- 2018-12-11 CN CN201822075023.5U patent/CN209110507U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370003A (en) * | 2019-08-15 | 2019-10-25 | 浙江科力车辆控制***有限公司 | Vehicle hydraulic pressure load lifting cylinder finger assembles device |
| CN110370003B (en) * | 2019-08-15 | 2024-05-17 | 浙江科力车辆控制***有限公司 | Anti-pinch assembly device for hydraulic lifting cylinder for vehicle |
| CN113020934A (en) * | 2021-03-04 | 2021-06-25 | 山东大学 | Automatic intelligent assembling device for vertical hydraulic oil cylinder and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanjing Pu Xin mechanical and Electrical Equipment Co., Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000119 Denomination of utility model: Transmission shaft pressing device Granted publication date: 20190716 License type: Common License Record date: 20191018 Assignee: Nanjing Fanen Technology Co., Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000120 Denomination of utility model: Transmission shaft pressing device Granted publication date: 20190716 License type: Common License Record date: 20191018 Assignee: Nanjing Campbell Technology Development Co., Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000121 Denomination of utility model: Transmission shaft pressing device Granted publication date: 20190716 License type: Common License Record date: 20191018 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190716 Termination date: 20201211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |