CN108110946B - Generator shaft for construction machinery - Google Patents
Generator shaft for construction machinery Download PDFInfo
- Publication number
- CN108110946B CN108110946B CN201810057782.0A CN201810057782A CN108110946B CN 108110946 B CN108110946 B CN 108110946B CN 201810057782 A CN201810057782 A CN 201810057782A CN 108110946 B CN108110946 B CN 108110946B
- Authority
- CN
- China
- Prior art keywords
- sliding
- groove
- limiting
- shaft body
- housing
- 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.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims description 8
- 230000007246 mechanism Effects 0.000 claims description 22
- 210000001503 joint Anatomy 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 8
- 230000008094 contradictory effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 2
- 230000002452 interceptive effect Effects 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 8
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention belongs to the field of generators, in particular to a generator shaft consistently used for engineering machinery, and aims at the problems that the existing generator shaft has overlarge load when being started and the load impacts the generator shaft in a power-off state when being stopped. This design is when starting on the buffering dish slowly releases the energy of pivot body accumulation to equipment, makes the load steady change of pivot body, and the atress of buffering pivot body avoids the undulant great harm to the motor of motor load, cuts off the impact force of buffering equipment to the pivot body when closing, protects the safety of motor when the outage.
Description
Technical Field
The invention relates to the technical field of generators, in particular to a generator shaft for engineering machinery.
Background
The motor shaft is the main core component of the generator and bears the acting force of the load on the motor, especially when the engineering machinery is dragged, the load of the generator becomes relatively larger due to the large volume and large power of the engineering machinery,
the traditional mode adopts a frequency conversion technology to control the motor to rotate, is troublesome to control and inconvenient to adjust, and aims at the defects that the traditional generator shaft has large load and serious damage to the generator when in use and has impact force on the generator shaft when in shutdown, so that the generator shaft for the engineering machinery is needed;
aiming at the defects of the traditional generator shaft, the buffer disc slowly releases the energy accumulated by the rotating shaft body to equipment in a mechanical mode during starting, so that the load of the rotating shaft body is stably changed, the stress of the rotating shaft body is buffered, the damage of the motor due to large motor load fluctuation is avoided, the impact force of the buffer equipment on the rotating shaft body is cut off during closing, and the safety of the motor during power failure is protected.
Disclosure of Invention
The generator shaft for the engineering machinery provided by the invention overcomes the defects that the traditional generator shaft has large load when in use and serious damage to a generator, and the load has impact force on the generator shaft when in shutdown.
In order to achieve the purpose, the invention adopts the following technical scheme:
a generator shaft for engineering machinery comprises a rotating shaft body, wherein a buffer disc is fixedly sleeved on an outer ring at one end of the rotating shaft body, a coaxially arranged housing is movably sleeved at one end, far away from the rotating shaft body, of the buffer disc, a rotating groove movably sleeved with the rotating shaft body is formed in one side, close to the buffer disc, of the housing, an annular limiting groove coaxially arranged with the housing is formed in an outer ring at one end, far into the housing, of the buffer disc, limiting blocks distributed along the axis array are connected inside the limiting groove in a sliding mode, a tightening rod in threaded sleeved with the housing is movably sleeved at one end, far out of the limiting groove, of the limiting block, a connecting rod coaxially arranged with the rotating shaft body is installed at one end, far away from the rotating shaft body, of the housing, a key groove is formed in the outer ring of the connecting rod along the length direction of the connecting rod, a buffer mechanism is arranged, the buffer mechanism comprises a chute with an arc structure, the chute is distributed along the axis of the buffer disc in an array manner, a first sliding block is connected inside the chute in a sliding manner, a second sliding block in sliding connection with the chute is installed on one side of the first sliding block, a first spring fixedly connected with the second sliding block is installed on one side of the first sliding block close to the second sliding block, a second spring abutting against the side wall of the chute is installed on one side of the second sliding block far away from the first sliding block, a limiting rod is welded in the middle position of one end, extending out of the chute, of the first sliding block, and a push rod is welded at one end, extending out of the chute, of the second sliding block;
the locking mechanism comprises an installation groove with an arc structure, the installation groove is arranged in the housing in an array mode along the axis direction of the housing, a pressing plate with the arc structure is welded at an opening at one end of the installation groove, the end, far into the installation groove, of the pressing plate is abutted to a sleeve, a guide rod fixedly connected with the bottom of the installation groove is movably sleeved at one end, far away from the pressing plate, of the sleeve, a push plate with a semicircular structure is welded at one side of the sleeve, a butt joint hole in butt joint with the limiting rod is formed in one side, far into the housing, of the push plate, a guide channel communicated with the installation groove is formed in one end;
the guiding groove that is located spout bottom inner wall is seted up to one side that first slider is close to the second slider, and deepening of guiding groove along the direction of first slider to second slider shallowly gradually, and the one end that the locating pin stretches into the mounting groove is installed perpendicularly and is being contradicted with the push pedal shelves dish, keep away from one side of push pedal to a shelves dish and install the fifth spring that cup joints with the locating pin activity.
Preferably, one side of the limiting rod, which is far away from one end of the first sliding block, is provided with a positioning hole in butt joint with the positioning pin.
Preferably, the number of the buffer mechanisms is consistent with that of the locking mechanisms, and the distance between the buffer mechanisms and the rotating shaft body is consistent with that between the locking mechanisms and the rotating shaft body.
Preferably, one end of the tightening rod extending out of the housing is in threaded sleeve connection with an adjusting nut abutting against the housing.
Preferably, a check ring is fixedly sleeved at one end, extending out of the bottom of the first sliding block, of the limiting rod, and a third spring movably sleeved with the limiting rod is installed on one side, close to the first sliding block, of the check ring.
Preferably, one end of the guide rod extending into the sleeve is provided with a fourth spring abutting against the sleeve.
Preferably, the stopper is the arc structure, convex spout has all been seted up to one side that the stopper stretched into the spacing groove and the one side that contacts with the both sides inside wall of spacing groove, the inside sliding connection of convex spout has the ball of contradicting with the spacing groove lateral wall.
Compared with the prior art, the invention has the beneficial effects that:
1. the buffer disc slowly releases the energy accumulated by the rotating shaft body to equipment during starting through the sliding chute, the first sliding block, the guide groove, the second sliding block, the second spring, the limiting rod, the ejector rod and the first spring which are arranged on the buffer disc, so that the load of the rotating shaft body is stably changed, the stress of the rotating shaft body is buffered, the damage of large load fluctuation of the motor to the motor is avoided, on the other hand, the impact force of the buffer equipment on the rotating shaft body is cut off during closing, and the safety of the motor during power failure is protected;
2. through the mounting groove that sets up on the housing, pressing plates, the sleeve pipe, the guide rod, the push pedal, guide channel, locating pin and butt joint, cut off the impact force of buffer device to the pivot body when closing, the safety of protection motor when the outage, this design simple structure convenient operation is swift, on the one hand the buffer disk slowly releases the energy of pivot body accumulation to equipment when starting, make the load steady change of pivot body, the atress of buffering pivot body, avoid the undulant great harm to the motor of motor load, on the other hand cuts off the impact force of buffer device to the pivot body when closing, the safety of protection motor when the outage.
Drawings
Fig. 1 is a schematic structural view of a generator shaft for a construction machine according to the present invention;
FIG. 2 is a schematic structural diagram of a generator shaft buffer disk for a construction machine according to the present invention;
FIG. 3 is a schematic structural view of a generator shaft housing for a construction machine according to the present invention;
fig. 4 is a schematic structural diagram of the connection of the generator shaft sleeve, the guide rod and the push plate for the construction machine according to the present invention.
In the figure: the buffer plate comprises a rotating shaft body 1, a buffer disc 2, a housing 3, a rotating groove 4, a connecting rod 5, a key groove 6, a limiting groove 7, a limiting block 8, a tightening rod 9, a sliding groove 10, a first sliding block 11, a guide groove 12, a second sliding block 13, a second spring 14, a limiting rod 15, a top rod 16, a first spring 17, a mounting groove 18, a pressing plate 19, a sleeve 20, a guide rod 21, a push plate 22, a guide channel 23, a positioning pin 24 and a butt hole 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a generator shaft for engineering machinery comprises a rotating shaft body 1, a buffer disc 2 is fixedly sleeved on an outer ring of one end of the rotating shaft body 1, a coaxially arranged housing 3 is movably sleeved on one end of the buffer disc 2 far away from the rotating shaft body 1, a rotating groove 4 movably sleeved with the rotating shaft body 1 is arranged on one side of the housing 3 close to the buffer disc 2, an annular limiting groove 7 coaxially arranged with the buffer disc 2 is arranged on an outer ring of one end of the buffer disc 2 far into the housing 3, limiting blocks 8 distributed along an axis array are connected in the limiting groove 7 in a sliding manner, a tightening rod 9 in threaded sleeve connection with the housing 3 is movably sleeved on one end of the limiting block 8 extending out of the limiting groove 7, a connecting rod 5 coaxially arranged with the rotating shaft body 1 is arranged on one end of the housing 3 far away from the rotating shaft body 1, a key groove 6 is arranged on an outer ring of the connecting rod 5, the internally mounted of housing 3 has the locking mechanism with the buffer gear butt joint, buffer gear is including seting up the spout 10 of the arc structure on buffer disc 2, and spout 10 is along the axis array distribution of buffer disc 2, the inside sliding connection of spout 10 has first slider 11, second slider 13 with spout 10 sliding connection is installed to one side of first slider 11, first slider 11 is close to one side of second slider 13 and installs the first spring 17 with second slider 13 fixed connection, second slider 13 keeps away from one side of first slider 11 and installs the second spring 14 of contradicting with spout 10 lateral wall, the one end intermediate position welding that spout 10 was stretched out to first slider 11 has gag lever post 15, the one end welding that spout 10 was stretched out to second slider 13 has ejector pin 16.
Locking mechanism is including offering the mounting groove 18 at the inside arc structure of housing 3, and mounting groove 18 sets up along the axis direction array of housing 3, the one end opening part welding of mounting groove 18 has the clamp plate 19 of arc structure, the clamp plate 19 is gone deep into the one end of mounting groove 18 and is contradicted and have sleeve pipe 20, the one end activity that the clamp plate 19 was kept away from to sleeve pipe 20 has the guide bar 21 with mounting groove 18 bottom fixed connection, the one side welding of sleeve pipe 20 has semi-circular structure's push pedal 22, the one side that sleeve pipe 20 was kept away from to push pedal 22 is seted up the butt joint hole 25 with gag lever post 15 butt joint, the inside one end of butt joint hole 25 deep housing 3 is seted up the guide way 23 with mounting groove 18 intercommunication.
One side of the limiting rod 15, which is far away from one end of the first slider 11, is provided with a positioning hole in butt joint with a positioning pin 24, one side of the first slider 11, which is close to the second slider 13, is provided with a guide groove 12, which is positioned on the inner wall of the bottom of the sliding groove 10, the depth of the guide groove 12 gradually becomes shallow along the direction from the first slider 11 to the second slider 13, the number of the buffer mechanisms and the number of the locking mechanisms are consistent, the distance between the buffer mechanisms and the rotating shaft body 1 is consistent with the distance between the locking mechanisms and the rotating shaft body 1, the end, extending out of the housing 3, of the tightening rod 9 is in threaded sleeve joint with an adjusting nut which is in conflict with the housing 3, one end, extending out of the bottom of the first slider 11, of the limiting rod 15 is in fixed sleeve joint with a check ring, one side, which is close to the first slider 11, of the, stopper 8 stretches into one side of spacing groove 7 and has all seted up convex spout with the one side that the both sides inside wall of spacing groove 7 contacted, and the inside sliding connection of convex spout has the ball of contradicting with the spacing groove 7 lateral wall, and the one end that locating pin 24 stretched into mounting groove 18 is installed perpendicularly and is contradicted the shelves dish with push pedal 22, and one side that push pedal 22 was kept away from to the shelves dish is installed the fifth spring that cup joints with locating pin 24 activity.
The working principle is as follows: when the rotating shaft body 1 rotates, the equipment on the connecting rod 5 rotates slowly relative to the rotating shaft body 1 under the action of inertia, then the rotating shaft body 1 drives the first sliding block 11 on the buffer disc 2 to move towards the direction far away from the second sliding block 13, so that the impact force of the equipment on the rotating shaft body 1 is relieved under the action of the first spring 17 and the second spring 14, the first spring 17 and the second spring 14 recover to the original positions along with the gradual increase of the rotating speed of the equipment, when the generator stops, the rotating speed of the equipment is higher than the speed of the rotating shaft body 1, then the second sliding block 13 moves towards the direction far away from the first sliding block 11, the impact force of the equipment on the rotating shaft body 1 is buffered, meanwhile, the second sliding block 13 drives the first sliding block 11 to move, so that the limiting rod 15 on the first sliding block 11 slides along the guide groove 12, so that the limiting rod 15 moves towards the inside of the sliding groove 10, then the limiting rod 15 extends out of the butt joint hole 25, so that the equipment on the housing 2 is separated from the contact with the rotating shaft body 1, the damage to the rotating shaft body when the equipment on the housing stops is avoided, meanwhile, the ejector rod 16 on the second sliding block 13 pushes the pressing plate 19 on the housing 3 to move towards the inner direction far away from the installation groove 18, then the push plate 22 on the sleeve 20 moves upwards, then the positioning pin 24 moves towards the direction far away from the butt joint hole 25 under the action of the fifth spring, so that the positioning pin 24 is separated from the contact with the limiting rod, when the equipment gradually slows down, the limiting rod 15 is butted with the butt joint hole 25 by utilizing the opposite steps, the design structure is changed, the operation is simple and convenient, on one hand, the buffer disc slowly releases the energy accumulated by the rotating shaft body to the equipment, so that the load of the rotating shaft, the atress of buffering pivot body avoids the undulant great harm to the motor of motor load, and on the other hand cuts off the impact force of buffer equipment to the pivot body when closing, protects the safety of motor when the outage.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A generator shaft for engineering machinery comprises a rotating shaft body (1) and is characterized in that a buffer disc (2) is fixedly sleeved on an outer ring of one end of the rotating shaft body (1), a coaxially arranged cover shell (3) is movably sleeved on one end, far away from the rotating shaft body (1), of the buffer disc (2), a rotating groove (4) movably sleeved with the rotating shaft body (1) is formed in one side, close to the buffer disc (2), of the cover shell (3), an annular limiting groove (7) coaxially arranged with the cover shell is formed in an outer ring of one end, far away from the cover shell (3), of the buffer disc (2), limiting blocks (8) distributed along the axis array are connected in a sliding mode inside the limiting groove (7), tightening rods (9) in threaded sleeve connection with the cover shell (3) are movably sleeved on one end, far away from the rotating shaft body (1), of the cover shell (3) are provided with connecting rods (5) coaxially arranged with the rotating shaft body (1), the outer ring of the connecting rod (5) is provided with a key groove (6) along the length direction, one end of the buffer disc (2) penetrating into the housing (3) is provided with a buffer mechanism along the axis direction, a locking mechanism in butt joint with the buffer mechanism is installed inside the housing (3), the buffer mechanism comprises sliding chutes (10) which are provided on the buffer disc (2) and have arc structures, the sliding chutes (10) are distributed along the axis array of the buffer disc (2), first sliding blocks (11) are connected inside the sliding chutes (10) in a sliding manner, second sliding blocks (13) which are connected with the sliding chutes (10) in a sliding manner are installed on one sides of the first sliding blocks (11) close to the second sliding blocks (13), first springs (17) which are fixedly connected with the second sliding blocks (13) are installed on one sides of the second sliding blocks (11), and second springs (14) which are abutted against the side walls of the sliding chutes (10) are installed on one sides of the second sliding blocks (13) far away from, a limiting rod (15) is welded in the middle of one end, extending out of the sliding groove (10), of the first sliding block (11), and a push rod (16) is welded at one end, extending out of the sliding groove (10), of the second sliding block (13);
the locking mechanism comprises an installation groove (18) which is provided with an arc structure in the housing (3), the mounting grooves (18) are arranged in an array along the axial direction of the housing (3), a pressing plate (19) with an arc-shaped structure is welded at an opening at one end of the mounting groove (18), a sleeve (20) is abutted at one end of the pressing plate (19) far into the mounting groove (18), a guide rod (21) fixedly connected with the bottom of the mounting groove (18) is movably sleeved at one end of the sleeve (20) far away from the pressing plate (19), a push plate (22) with a semicircular structure is welded at one side of the sleeve (20), a butt joint hole (25) in butt joint with the limiting rod (15) is formed in one side of the push plate (22) far away from the, one end of the butt joint hole (25) penetrating into the housing (3) is provided with a guide channel (23) communicated with the mounting groove (18), and a positioning pin (24) is connected in the guide channel (23) in a sliding manner;
guiding groove (12) that are located spout (10) bottom inner wall are seted up to one side that first slider (11) are close to second slider (13), and guiding groove (12) deepen along first slider (11) to the direction of second slider (13) and become shallow gradually, the one end that locating pin (24) stretched into mounting groove (18) is installed perpendicularly and is had the shelves dish of contradicting with push pedal (22), the fifth spring that cup joints with locating pin (24) activity is installed to one side that the push pedal (22) was kept away from to the shelves dish.
2. The generator shaft for the engineering machinery according to claim 1, wherein one side of the limiting rod (15) far away from one end of the first sliding block (11) is provided with a positioning hole in butt joint with the positioning pin (24).
3. The generator shaft for a construction machine according to claim 1, wherein the number of the damper mechanism and the lock mechanism is the same, and the distance between the damper mechanism and the rotation shaft body (1) and the distance between the lock mechanism and the rotation shaft body (1) are the same.
4. The generator shaft for construction machinery according to claim 1, wherein an end of the tightening rod (9) protruding out of the housing (3) is threadedly sleeved with an adjusting nut interfering with the housing (3).
5. The generator shaft for the engineering machinery is characterized in that a check ring is fixedly sleeved at one end, extending out of the bottom of the first sliding block (11), of the limiting rod (15), and a third spring movably sleeved with the limiting rod (15) is installed at one side, close to the first sliding block (11), of the check ring.
6. Generator shaft for a working machine according to claim 1, characterised in that the end of the guide rod (21) that protrudes into the sleeve (20) is fitted with a fourth spring that interferes with the sleeve (20).
7. The generator shaft for the engineering machinery as claimed in claim 1, wherein the limiting block (8) is of an arc-shaped structure, one side of the limiting block (8) extending into the limiting groove (7) and one side of the limiting block contacting with the inner side walls of the two sides of the limiting groove (7) are both provided with arc-shaped sliding grooves, and the inner parts of the arc-shaped sliding grooves are slidably connected with balls abutting against the side walls of the limiting groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057782.0A CN108110946B (en) | 2018-01-22 | 2018-01-22 | Generator shaft for construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057782.0A CN108110946B (en) | 2018-01-22 | 2018-01-22 | Generator shaft for construction machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108110946A CN108110946A (en) | 2018-06-01 |
| CN108110946B true CN108110946B (en) | 2020-01-03 |
Family
ID=62219361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810057782.0A Active CN108110946B (en) | 2018-01-22 | 2018-01-22 | Generator shaft for construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108110946B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375002A (en) * | 2019-07-30 | 2019-10-25 | 苏州涂印仕机电工业有限公司 | Axis automatic butt-jointing mechanism |
| CN112134400B (en) * | 2020-08-27 | 2021-08-24 | 浙江光悦电机有限公司 | Electric motor |
| CN116021300B (en) * | 2023-03-22 | 2023-05-26 | 成都航空职业技术学院 | Servo motor connecting device of numerical control machine tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3420863B2 (en) * | 1995-07-28 | 2003-06-30 | 多摩川精機株式会社 | Motor preload adjustment structure |
| KR100213138B1 (en) * | 1996-11-25 | 1999-08-02 | 윤종용 | Hemisphere bearing |
| CN103410433A (en) * | 2013-08-14 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Spring type mechanical buffering and floating device of drilling rig |
| CN206865277U (en) * | 2017-02-16 | 2018-01-09 | 李晓雪 | One kind transmission damping device |
| CN107448593B (en) * | 2017-08-01 | 2019-06-04 | 浙江工贸职业技术学院 | A kind of double rod operating mechanism |
-
2018
- 2018-01-22 CN CN201810057782.0A patent/CN108110946B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108110946A (en) | 2018-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108110946B (en) | Generator shaft for construction machinery | |
| CN202417471U (en) | Clutch cam mechanism for bouncing out and taking back adjustable arm of underground measuring and adjusting instrument | |
| CN208862704U (en) | A kind of spare motor automatic switchover operating component | |
| CN1986143A (en) | Automatic welding gun | |
| AU2020252122A1 (en) | Automatic door operator | |
| CN101985182B (en) | Upper center driving device capable of jacking reliably | |
| CN210264471U (en) | Rolling slats door safety stop device | |
| CN201493512U (en) | improved feeding mechanism of drilling machine | |
| CN209262113U (en) | Slip clutch | |
| CN203973261U (en) | A kind of die head threading machine gear | |
| CN108730357B (en) | A kind of adjustable junction box | |
| CN203681579U (en) | Switching locking mechanism comprising adjustable friction damper | |
| CN103168568A (en) | Automatic braking device | |
| CN109114365B (en) | Computer mainframe base | |
| CN202377838U (en) | Knife driving mechanism of spindle in machine tool | |
| CN112065264A (en) | Millstone water well drilling machine for water conservancy pile foundation engineering | |
| CN220566458U (en) | Mechanical braking structure of jigger tool | |
| CN110715024A (en) | Torsional vibration energy storage device | |
| KR101524182B1 (en) | Rotatory Force Transfer Device with Clutch | |
| JPH02311280A (en) | Hammer drill | |
| CN217784126U (en) | Mechanism for realizing bidirectional overload protection of motor | |
| CN214684397U (en) | Surface drilling device for die casting machining | |
| CN116060747B (en) | Wear-resisting plate plasma cutting equipment | |
| CN219703643U (en) | Corrugated pipe cutting machine | |
| CN202317319U (en) | Screw tap locating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Generator shaft for construction machinery Effective date of registration: 20220427 Granted publication date: 20200103 Pledgee: Agricultural Bank of China Limited Ningbo Zhenhai sub branch Pledgor: Ningbo Chance Shaft Co.,Ltd. Registration number: Y2022330000613 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20200103 Pledgee: Agricultural Bank of China Limited Ningbo Zhenhai sub branch Pledgor: Ningbo Chance Shaft Co.,Ltd. Registration number: Y2022330000613 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |