CN201685702U - Electric chassis having manual clutch with overload protection - Google Patents
Electric chassis having manual clutch with overload protection Download PDFInfo
- Publication number
- CN201685702U CN201685702U CN2010201620884U CN201020162088U CN201685702U CN 201685702 U CN201685702 U CN 201685702U CN 2010201620884 U CN2010201620884 U CN 2010201620884U CN 201020162088 U CN201020162088 U CN 201020162088U CN 201685702 U CN201685702 U CN 201685702U
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- CN
- China
- Prior art keywords
- gear
- copper sheathing
- overload protection
- vehicle frame
- manual clutch
- 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 - Lifetime
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Abstract
The utility model discloses an electric chassis having a manual clutch with overload protection, which comprises a frame, a static frame, a screw rod, a motor and a transmission mechanism. The frame is arranged on one side of the static frame, the motor and the screw rod are respectively installed in the frame, the motor is connected with the screw rod through the transmission mechanism in a transmission manner, the transmission mechanism comprises a plurality of transmission gears, a manual clutch and a friction sheet type overload protection clutch, a first gear and a second gear capable of mutually separating and attaching are arranged in the manual clutch, the first gear is connected with the screw rod through the transmission gears in a transmission manner, a third gear and a fourth gear transmitted by a friction sheet in a transmission manner are arranged in the friction sheet overload protection clutch, the second gear is connected with the fourth gear directly or through the transmission gears in a transmission manner, and the third gear is connected with a rotary shaft of the motor through the transmission gears in a transmission manner. In the electric chassis, manual operation and electric operation are separated, and the electric chassis has the advantages of convenience in operation, mechanical overload protection, safety and reliability and the like.
Description
Technical field
The utility model relates to a kind of electric chassis truck, especially relates to the electric chassis truck that a kind of manual clutch has overload protection.
Background technology
At present, the electric chassis truck of prior art, when M/C, its chassis screw mandrel generally can drive the motor counter-rotating in rotation, thereby causes the phenomenon of burn-down of electric motor to take place.In order to address this problem, the electric chassis truck that has adopts the method for self-acting clutch that motor can not reversed with the rotation of chassis screw mandrel under M/C.Yet, because this self-acting clutch is to utilize to be come transfer torque by the steel ball of activity clamping and dental clutch, make combination, the separation of this power-transfer clutch need by rotary centrifugal force and spring force, thereby cause the accuracy of manufacture of this self-acting clutch to be had relatively high expectations, reliability is relatively poor.In addition, this electric chassis truck, when electric operating is changed hands moving operation, the angle of often need reversing, power-transfer clutch could be thrown off, therefore, operation inconvenience, and maloperation easily takes place.Also have a kind of electric chassis truck, it is to adopt electronic product to protect motor, and its principle is to utilize electronic product to detect the electric current of motor, and cuts off current of electric when motor rotation blockage.There is certain defective in this kind electric chassis truck on also on to the protection of motor, if the detection sensitivity of electronic product is not enough, and can't in time cut off the electric current of motor when motor rotation blockage, then can damage the parts in the driving system equally.
The utility model content
The purpose of this utility model is to overcome the deficiency of prior art, provide a kind of manual clutch to have the electric chassis truck of overload protection, it separates electric operating and M/C, design a manual clutch, so that electric chassis truck is thrown off driving system, combination automatically when electric operating when M/C; It also designs a friction disk type safety clutch, is used to protect motor.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of manual clutch has the electric chassis truck of overload protection, comprises a vehicle frame, a quiet vehicle frame, a screw mandrel, a motor and a transmission device; Vehicle frame is located at a side of quiet vehicle frame; Motor and screw mandrel are contained in respectively in the vehicle frame, and transmission device is contained on vehicle frame and the quiet vehicle frame, and motor is by transmission device and screw mandrel driving coupling mutually; This transmission device comprises some transmission gears; This transmission device also comprises a manual clutch and a friction disk type overload protection clutches; Be provided with one first gear and one second gear of clutch mutually in this manual clutch, this first gear is by transmission gear and screw mandrel driving coupling mutually; Be provided with one the 3rd gear and one the 4th gear in the friction disk type overload protection clutches by a friction lining friction-type transmission; Second direct geared or by transmission gear and the 4th gear driving coupling mutually; The 3rd gear is in transmission connection with the rotating shaft of motor mutually by transmission gear.
Described manual clutch also comprises M/C head, square shaft, square shaft cover, first copper sheathing, second copper sheathing, first pulling block, second pulling block, first rotating shaft, jump ring, stage clip and the 3rd copper sheathing; The M/C head is fixed on an end of square shaft, square shaft cover, first copper sheathing, first pulling block and first rotating shaft are enclosed within on the square shaft of corresponding M/C head rear side successively, and the outer wall of square shaft cover is connected in the hole of described quiet vehicle frame rotationally, the outer wall of first copper sheathing is connected in the hole of described vehicle frame rotationally, square shaft cover leans with the proximal end face mutually of M/C head, and the both ends of the surface of first pulling block lean with respectively end face of first copper sheathing and first rotating shaft respectively; Second pulling block, second gear, stage clip and the 3rd copper sheathing are enclosed within on the outer wall of first rotating shaft successively; One end of this second gear also is provided with a gear wheel shaft, and the both ends of the surface of second pulling block lean with the axle head of this gear wheel shaft and each end face of first pulling block respectively; Second copper sheathing, first gear are enclosed within on the gear wheel shaft of second gear successively, and the both ends of the surface of first gear lean with each end face of second gear and second copper sheathing respectively; Stage clip is opened and is withstood between second gear and the 3rd copper sheathing; The outer wall of the 3rd copper sheathing is fixed on the described vehicle frame; Jump ring is socketed on the outer wall of first gear.
Described manual clutch also comprises a resilient pin; Have first a penetrating axis hole on the one distolateral wall of described M/C head, the corresponding second penetrating axis hole that has on the front end side wall of described square shaft; This resilient pin passes first axis hole and second axis hole successively described M/C head is limited in the front end of described square shaft.
What be respectively equipped with on the end face that leans of described first gear and second gear that some clampings mutually cooperate pulls out key and keyway.
Be respectively equipped with some grooves and the boss that clamping mutually cooperates on the end face that leans of described first pulling block and second pulling block; The two side of this groove is made as first ramp structure respectively, and the two side of this boss is made as second ramp structure with the first ramp structure corresponding matching respectively.
Described friction disk type overload protection clutches also comprises second rotating shaft, the 4th copper sheathing, second axle sleeve, the collar, holddown spring, pressure pad and nut; The 4th copper sheathing, described the 3rd gear, friction lining, the 4th gear, second axle sleeve, the collar, holddown spring and pressure pad are enclosed within second rotating shaft successively, and the outer wall of the 4th copper sheathing is connected in the hole of described vehicle frame rotationally, and the outer wall of the collar is connected in the hole of described vehicle frame rotationally; The both ends of the surface of the 3rd gear lean with each end face of the 4th copper sheathing and the 4th gear respectively, and described friction lining is held between the phase proximal end face of described the 3rd gear and the 4th gear; Holddown spring is opened and is withstood between the collar and the pressure pad; Nut is locked in the rear end of second rotating shaft so that pressure pad is limited in second rotating shaft.
Described second axle sleeve comprises a tubular structure and a cyclic structure; The internal diameter of this tubular structure and cyclic structure equates that the outside dimension of tubular structure is less than the outside dimension of cyclic structure; The tubular structure of this second axle sleeve is embedded between the inwall and second rotating shaft of the 4th gear, and the both ends of the surface of the cyclic structure of this second axle sleeve lean with each end face of the 4th gear and the collar respectively.
The beneficial effects of the utility model are: because transmission device of the present utility model also comprises a manual clutch and a friction disk type overload protection clutches, and manual clutch comprises first gear, second gear, the M/C head, square shaft, the square shaft cover, first copper sheathing, second copper sheathing, first pulling block, second pulling block, first rotating shaft, jump ring, stage clip and the 3rd copper sheathing, the friction disk type overload protection clutches comprises the 3rd gear, the 4th gear, second rotating shaft, the 4th copper sheathing, second axle sleeve, the collar, holddown spring, pressure pad and nut, make the utility model under M/C, its screw mandrel rotation will can not drive the motor counter-rotating, and can not increase manually operated moment, thereby improve the service life of motor; The utility model is under electric operating, and its power-transfer clutch combination, and transfer torque drive the screw mandrel rotation and shake into and shake out to drive handcart; The utility model utilizes the friction lining transfer torque, and when load surpasses the setting moment of torsion, friction lining will skid and can not drive the rotation of the 4th gear, and therefore, the utility model can be protected motor when et out of order.In sum, the utlity model has designs simplification, easy and simple to handle, machine overload protection, advantage such as safe and reliable.
Below in conjunction with drawings and Examples the utility model is described in further detail; But the electric chassis truck that a kind of manual clutch of the present utility model has overload protection is not limited to embodiment.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the exploded perspective view of manual clutch of the present utility model;
Fig. 3 is the cutaway view of manual clutch of the present utility model;
Fig. 4 is the exploded perspective view of friction disk type overload protection clutches of the present utility model;
The cutaway view of Fig. 5 friction disk type overload protection clutches of the present utility model.
The specific embodiment
Embodiment sees also shown in the accompanying drawing, and a kind of manual clutch of the present utility model has the electric chassis truck of overload protection, comprises a vehicle frame 1, one quiet vehicle frame 2, a screw mandrel 3, a motor 4 and a transmission device; Vehicle frame 1 is located at a side of quiet vehicle frame 2; Motor 4 and screw mandrel 3 are contained in respectively in the vehicle frame 1, and transmission device is contained on vehicle frame 1 and the quiet vehicle frame 2, and motor 4 is by transmission device and screw mandrel 3 driving coupling mutually; This transmission device comprises some transmission gears 5; This transmission device also comprises a manual clutch 6 and a friction disk type overload protection clutches 7; Be provided with one first gear 610 and one second gear 612 of clutch mutually in this manual clutch 6, this first gear 610 is by transmission gear 5 and screw mandrel 3 driving coupling mutually; Be provided with one the 3rd gear 703 and one the 4th gear 705 in the friction disk type overload protection clutches 7 by a friction lining 704 friction-type transmissions; Second gear 612 is directly or by transmission gear 5 and the 4th gear 705 driving coupling mutually; The 3rd gear 703 is in transmission connection mutually by the rotating shaft of transmission gear 5 with motor 4.
Wherein,
See also Fig. 2, shown in Figure 3, described manual clutch 6 also comprises M/C head 601, square shaft 603, square shaft cover 604, first copper sheathing 605, second copper sheathing 609, first pulling block 606, second pulling block 607, first rotating shaft 608, jump ring 611, stage clip 613 and the 3rd copper sheathing 614; M/C head 601 is fixed on an end of square shaft 603, square shaft cover 604, first copper sheathing 605, first pulling block 606 and first rotating shaft 608 are enclosed within on the square shaft 603 of corresponding M/C head 601 rear sides successively, and the outer wall of square shaft cover 604 is connected in the hole of described quiet vehicle frame 2 rotationally, the outer wall of first copper sheathing 605 is connected in the hole of described vehicle frame 1 rotationally, square shaft cover 604 leans with the proximal end face mutually of M/C head 601, and the both ends of the surface of first pulling block 606 lean with respectively end face of first copper sheathing 605 and first rotating shaft 608 respectively; Second pulling block 607, second gear 612, stage clip 613 and the 3rd copper sheathing 614 are enclosed within on the outer wall of first rotating shaft 608 successively; The both ends of the surface that one end of this second gear 612 also is provided with a gear wheel shaft 6121, the second pulling blocks 607 lean with the axle head of this gear wheel shaft 6121 and each end face of first pulling block 606 respectively; Second copper sheathing 609, first gear 610 are enclosed within on the gear wheel shaft 6121 of second gear 612 successively, and the both ends of the surface of first gear 610 lean with each end face of second gear 612 and second copper sheathing 609 respectively; 613 of stage clips withstand between second gear 612 and the 3rd copper sheathing 614; The outer wall of the 3rd copper sheathing 614 is fixed on the described vehicle frame 1; Jump ring 611 is socketed on the outer wall of first gear 610;
Described manual clutch 6 also comprises a resilient pin 602; Have first a penetrating axis hole 6011 on the one distolateral wall of described M/C head 601, the corresponding second penetrating axis hole 6031 that has on the front end side wall of described square shaft 603; This resilient pin 602 passes first axis hole 6011 and second axis hole 6031 successively described M/C head 601 is limited in the front end of described square shaft 603;
What be respectively equipped with on the end face that leans of described first gear 610 and second gear 612 that some clampings mutually cooperate pulls out key 6101 and keyway 6122;
Be respectively equipped with some grooves 6061 and the boss 6071 that clamping mutually cooperates on the end face that leans of described first pulling block 606 and second pulling block 607; The two side of this groove 6061 is made as first ramp structure respectively, and the two side of this boss 6071 is made as second ramp structure with the first ramp structure corresponding matching respectively.
See also Fig. 4, shown in Figure 5, described friction disk type overload protection clutches 7 also comprises second rotating shaft 701, the 4th copper sheathing 702, second axle sleeve 706, the collar 707, holddown spring 708, pressure pad 709 and nut 710; The 4th copper sheathing 702, described the 3rd gear 703, friction lining 704, the 4th gear 705, second axle sleeve 706, the collar 707, holddown spring 708 and pressure pad 709 are enclosed within second rotating shaft 701 successively, and the outer wall of the 4th copper sheathing 702 is connected in the hole of described vehicle frame 1 rotationally, and the outer wall of the collar 707 is connected in the hole of described vehicle frame 1 rotationally; The both ends of the surface of the 3rd gear 703 lean with each end face of the 4th copper sheathing 702 and the 4th gear 705 respectively, and described friction lining 704 is held between the phase proximal end face of described the 3rd gear 703 and the 4th gear 705; 708 of holddown springs withstand between the collar 707 and the pressure pad 709; Nut 710 is locked in the rear end of second rotating shaft 701 pressure pad 709 is limited in second rotating shaft 701;
Described second axle sleeve 706 comprises a tubular structure and a cyclic structure; The internal diameter of this tubular structure and cyclic structure equates that the outside dimension of tubular structure is less than the outside dimension of cyclic structure; The tubular structure of this second axle sleeve 706 is embedded between the inwall and second rotating shaft 701 of the 4th gear 705, and the both ends of the surface of the cyclic structure of this second axle sleeve 706 lean with each end face of the 4th gear 705 and the collar 707 respectively.
A kind of manual clutch of the present utility model has the electric chassis truck of overload protection, its M/C and electric operating are separated, its electrical operated detailed process is: M/C head 601 is screwed into the electric operating position, be square shaft 603 half-twists and drive the rotation of first pulling block 606, second gear 612 and second pulling block 607 that slide over simultaneously in second rotating shaft 608 slide to first pulling block 606 under the elastic force effect of stage clip 613 vertically, thereby the keyway 6122 of second gear, 612 outer faces and the key 6101 that pulls out of first gear, 610 outer faces are worked in coordination, then power-transfer clutch combination, the boss 6071 of second pulling block 607 falls in the groove 6061 of first pulling block 606 simultaneously, drives motor 4 and starts; After motor 4 starts, its turning cylinder and transmission gear 5 transmission mutually, and through 703 rotations of transmission gear 5 drives the 3rd gear, the 3rd gear 703 drives friction linings 704 rotations immediately, friction lining 704 drives the 4th gear 705 again and rotates; After the 4th gear 705 rotates, drive second gear 612 through transmission gear 5 and rotate, second gear 612 drives first gear 610 again and rotates; Last first gear 610 is through driving band movable wire thick stick 3 rotation of transmission gear 5, can drive handcart this moment and shake into and shake out.
A kind of manual clutch of the present utility model has the electric chassis truck of overload protection, its manually operated detailed process is: M/C head 601 is screwed into the M/C position, be square shaft 603 half-twists and drive the rotation of first pulling block 606 that then the inclined-plane, outer end of first pulling block 606 promotes second pulling block 607 and slides to second gear 612 vertically; Under the promotion of second pulling block 607, second gear 612 slides vertically, and the key 6101 that pulls out of the keyway 6122 of its outer face and first gear, 610 outer faces is separated, thereby makes throw-out-of clutch, at this moment can manually shake leading screw 3 rotations, shake into the driving handcart and shake out.
A kind of manual clutch of the present utility model has the electric chassis truck of overload protection; because its friction lining 704 is under the pressure effect of holddown spring 708; be clamped between the end face of the 3rd gear 703 and the 4th gear 705; and the big I of these friction lining 704 transmission torsion realizes by the pressure of adjusting holddown spring 708; make when load surpasses the moment of torsion that sets; friction lining 704 will skid and can't drive 705 rotations of the 4th gear, thereby finally can't drive screw mandrel 3 rotations.Therefore, the utility model can be protected motor 4 when et out of order.In addition, in the M/C process,, make whole drive system throw off, thereby make the rotation of screw mandrel 3 can not drive motor 4 counter-rotatings, and can not increase manually operated moment because the keyway 6122 that pulls out the key 6101 and second gear 612 of first gear 610 is separated.Therefore, the utility model can improve the service life of motor 4.
The foregoing description only is used for further specifying the electric chassis truck that a kind of manual clutch of the present utility model has overload protection; but the utility model is not limited to embodiment; every foundation technical spirit of the present utility model all falls into the protection domain of technical solutions of the utility model to any simple modification, equivalent variations and modification that above embodiment did.
Claims (7)
1. a manual clutch has the electric chassis truck of overload protection, comprises a vehicle frame, a quiet vehicle frame, a screw mandrel, a motor and a transmission device; Vehicle frame is located at a side of quiet vehicle frame; Motor and screw mandrel are contained in respectively in the vehicle frame, and transmission device is contained on vehicle frame and the quiet vehicle frame, and motor is by transmission device and screw mandrel driving coupling mutually; This transmission device comprises some transmission gears; It is characterized in that: this transmission device also comprises a manual clutch and a friction disk type overload protection clutches; Be provided with one first gear and one second gear of clutch mutually in this manual clutch, this first gear is by transmission gear and screw mandrel driving coupling mutually; Be provided with one the 3rd gear and one the 4th gear in the friction disk type overload protection clutches by a friction lining friction-type transmission; Second direct geared or by transmission gear and the 4th gear driving coupling mutually; The 3rd gear is in transmission connection with the rotating shaft of motor mutually by transmission gear.
2. manual clutch according to claim 1 has the electric chassis truck of overload protection, it is characterized in that: described manual clutch also comprises M/C head, square shaft, square shaft cover, first copper sheathing, second copper sheathing, first pulling block, second pulling block, first rotating shaft, jump ring, stage clip and the 3rd copper sheathing; The M/C head is fixed on an end of square shaft, square shaft cover, first copper sheathing, first pulling block and first rotating shaft are enclosed within on the square shaft of corresponding M/C head rear side successively, and the outer wall of square shaft cover is connected in the hole of described quiet vehicle frame rotationally, the outer wall of first copper sheathing is connected in the hole of described vehicle frame rotationally, square shaft cover leans with the proximal end face mutually of M/C head, and the both ends of the surface of first pulling block lean with respectively end face of first copper sheathing and first rotating shaft respectively; Second pulling block, second gear, stage clip and the 3rd copper sheathing are enclosed within on the outer wall of first rotating shaft successively; One end of this second gear also is provided with a gear wheel shaft, and the both ends of the surface of second pulling block lean with the axle head of this gear wheel shaft and each end face of first pulling block respectively; Second copper sheathing, first gear are enclosed within on the gear wheel shaft of second gear successively, and the both ends of the surface of first gear lean with each end face of second gear and second copper sheathing respectively; Stage clip is opened and is withstood between second gear and the 3rd copper sheathing; The outer wall of the 3rd copper sheathing is fixed on the described vehicle frame; Jump ring is socketed on the outer wall of first gear.
3. manual clutch according to claim 2 has the electric chassis truck of overload protection, it is characterized in that: described manual clutch also comprises a resilient pin; Have first a penetrating axis hole on the one distolateral wall of described M/C head, the corresponding second penetrating axis hole that has on the front end side wall of described square shaft; This resilient pin passes first axis hole and second axis hole successively described M/C head is limited in the front end of described square shaft.
4. manual clutch according to claim 2 has the electric chassis truck of overload protection, it is characterized in that: what be respectively equipped with on the end face that leans of described first gear and second gear that some clampings mutually cooperate pulls out key and keyway.
5. manual clutch according to claim 2 has the electric chassis truck of overload protection, it is characterized in that: be respectively equipped with some grooves and the boss that clamping mutually cooperates on the end face that leans of described first pulling block and second pulling block; The two side of this groove is made as first ramp structure respectively, and the two side of this boss is made as second ramp structure with the first ramp structure corresponding matching respectively.
6. manual clutch according to claim 1 has the electric chassis truck of overload protection, it is characterized in that: described friction disk type overload protection clutches also comprises second rotating shaft, the 4th copper sheathing, second axle sleeve, the collar, holddown spring, pressure pad and nut; The 4th copper sheathing, described the 3rd gear, friction lining, the 4th gear, second axle sleeve, the collar, holddown spring and pressure pad are enclosed within second rotating shaft successively, and the outer wall of the 4th copper sheathing is connected in the hole of described vehicle frame rotationally, and the outer wall of the collar is connected in the hole of described vehicle frame rotationally; The both ends of the surface of the 3rd gear lean with each end face of the 4th copper sheathing and the 4th gear respectively, and described friction lining is held between the phase proximal end face of described the 3rd gear and the 4th gear; Holddown spring is opened and is withstood between the collar and the pressure pad; Nut is locked in the rear end of second rotating shaft so that pressure pad is limited in second rotating shaft.
7. manual clutch according to claim 6 has the electric chassis truck of overload protection, it is characterized in that: described second axle sleeve comprises a tubular structure and a cyclic structure; The internal diameter of this tubular structure and cyclic structure equates that the outside dimension of tubular structure is less than the outside dimension of cyclic structure; The tubular structure of this second axle sleeve is embedded between the inwall and second rotating shaft of the 4th gear, and the both ends of the surface of the cyclic structure of this second axle sleeve lean with each end face of the 4th gear and the collar respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201620884U CN201685702U (en) | 2010-04-16 | 2010-04-16 | Electric chassis having manual clutch with overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201620884U CN201685702U (en) | 2010-04-16 | 2010-04-16 | Electric chassis having manual clutch with overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201685702U true CN201685702U (en) | 2010-12-29 |
Family
ID=43373991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201620884U Expired - Lifetime CN201685702U (en) | 2010-04-16 | 2010-04-16 | Electric chassis having manual clutch with overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201685702U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108292831A (en) * | 2016-02-05 | 2018-07-17 | Abb瑞士股份有限公司 | The transmission of electric chassis truck and arrangement of clutch and electric chassis truck |
| CN115258990A (en) * | 2022-07-25 | 2022-11-01 | 浙江海测科技有限公司 | Electric hydrological winch and using method thereof |
-
2010
- 2010-04-16 CN CN2010201620884U patent/CN201685702U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108292831A (en) * | 2016-02-05 | 2018-07-17 | Abb瑞士股份有限公司 | The transmission of electric chassis truck and arrangement of clutch and electric chassis truck |
| CN108292831B (en) * | 2016-02-05 | 2019-08-02 | Abb瑞士股份有限公司 | The transmission of electric chassis truck and arrangement of clutch and electric chassis truck |
| US10566773B2 (en) | 2016-02-05 | 2020-02-18 | Abb Schweiz Ag | Transmission and clutch device for electric chassis vehicle, and electric chassis vehicle |
| CN115258990A (en) * | 2022-07-25 | 2022-11-01 | 浙江海测科技有限公司 | Electric hydrological winch and using method thereof |
| CN115258990B (en) * | 2022-07-25 | 2024-01-30 | 浙江海测科技有限公司 | Electric hydrologic winch and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |