CN201500394U - Rescuing machine for well - Google Patents
Rescuing machine for well Download PDFInfo
- Publication number
- CN201500394U CN201500394U CN2009202399877U CN200920239987U CN201500394U CN 201500394 U CN201500394 U CN 201500394U CN 2009202399877 U CN2009202399877 U CN 2009202399877U CN 200920239987 U CN200920239987 U CN 200920239987U CN 201500394 U CN201500394 U CN 201500394U
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Abstract
The utility model relates to a rescuing tool, in particular to a rescuing machine for a well. The rescuing machine comprises a supporting seat arranged on the well, a control cabinet arranged on the supporting seat, and a hoisting device. The hoisting device is connected with the upper end of a supporting positioning device stretching into the well by a steel wire rope. The lower end of the supporting positioning device is movably connected with a steering gear. The steering gear is meshed with a gear on a steering motor fixed at the lower part of the supporting positioning device. A half gear is fixedly connected at the lower end of the steering gear, a cross beam is fixed on the half gear by a rotating shaft, and the half gear is connected with a cross beam gear at the output end of a cross beam motor arranged on the cross beam in a meshing manner. A longitudinal seat is connected at one end of the cross beam, a longitudinal beam is connected below the longitudinal seat, a bayonet socket is arranged at the lower end of the longitudinal beam, and the hoisting device for trapped people is inserted in the bayonet socket. The rescuing machine has the following advantages: the structure is reasonable, the performance is stable, the trapped people can be quickly and accurately rescued, the machine is safe as well as reliable, and the rescuing success rate is greatly increased.
Description
Technical field:
The utility model relates to a kind of rescue tool, especially a kind of well rescue machine.
Background technology:
China has a large amount of motor-pumped wells and similar deep-well; these wells generally all have the degree of depth more than 20 meters; but the fall accident of well because of the mismanagement personnel that cause takes place in these deep-well regular meetings; because this this well is very dark, bore is very little; the rescue difficulty is big, traditional rescue mode nothing more than with pole hook people, rescue people person and take a risk to enter in the well or the modes such as rescuing the people that digs a well a large amount of man power and materials of consumption in the rescue process; particularly delay the rescue time of a large amount of preciousnesses, greatly reduced the rescue success rate.
The utility model content:
The utility model provides a kind of well rescue machine, and it is rational in infrastructure, and stable performance can be rescued trapped personnel fast and accurately, and is safe and reliable, improved the rescue success rate greatly, solved problems of the prior art.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be: it comprises and is located at aboveground bearing, be located at switch board and lifting device on the bearing, lifting device links to each other with supporting and positioning device upper end in stretching into well by steel wire rope, the supporting and positioning device lower end is connected with tooth sector, tooth sector and the gears engaged that is fixed on the steer motor of supporting and positioning device bottom, be fixed with half gear in the tooth sector lower end, crossbeam is fixed on half gear by rotating shaft, half gear is connected with the crossbeam gears engaged of crossbeam motor output end on being located at crossbeam, end at crossbeam is connected with a vertical seat, vertically the seat below is connected with a longeron, the longeron lower end is provided with a plug socket, is plugged with the trapped personnel lifting device in the plug socket.
Described lifting device comprises the lifting motor that is fixed on the bearing bottom, the sprocket wheel that promotes on the motor output shaft links to each other with the sprocket wheel of rope sheave one end that is fixed on the bearing upper end through promoting friction pulley by chain, and the steel wire rope that twines on the rope sheave links to each other with the supporting and positioning device upper end.
Described supporting and positioning device comprises support set, above support set, be provided with support motor, upper friction plate in the output shaft of support motor and the support set is connected, and following friction plate below is provided with supports the spring of friction plate down, and the spring below is provided with the gripper shoe that is connected on the support set; The screw rod that following friction plate below is connected passes gripper shoe and flexibly connects with the supporting seat that is connected in the support set bottom, thread bush is equipped with an elevating bracket on screw rod, and the two pole front ends that the elevating bracket both sides flexibly connect are inserted into respectively in two chutes that support that flexibly connect with support set.
Described crossbeam and longeron are extensible canopy, described extensible canopy comprises beam casing that is located at the outside and the expansion link that is located at the mutual socket of some joints in the beam casing, on beam casing, be fixed with a flexible motor, flexible motor links to each other by the belt pulley on the gear shaft of the expansion teeth wheels on belt and the beam casing that is connected in the expansion link external part, described expansion teeth wheels comprise the support that is connected on the beam casing, the gear shaft two ends of flexible gear snap in the draw-in groove of support, the two ends of gear shaft are connected with the spring of support upper end respectively, the both sides of flexible gear are respectively equipped with a pinch roller, the gear teeth of flexible gear are relative with the perforation position on the expansion link, be provided with flat Xiao's seat at the rear portion of each section telescopic bar, the puck position of corresponding flexible gear both sides is respectively equipped with flat Xiao of a band spring in flat Xiao's seat.
Described vertical seat comprises the pedestal that links to each other with crossbeam, is provided with vertical motor in a side of pedestal, and vertically the vertical gear on the output shaft of motor meshes with vertical deflecting roller of the longitudinal axis upper end that is located at the pedestal middle part, and longitudinal axis lower end and longeron are connected.
Described trapped personnel lifting device comprises a carriage box, be provided with a connection-peg that cooperates with plug socket in the upper end of carriage box, lower end at the carriage box is connected with cross clamp by carriage box spring, in the cross clamp by two cross springs be fixed with respectively can about the two cross supporting plates opened; Be fixed with a take-up motor in the longeron outer lower portion, the output shaft of take-up motor is provided with a take-up friction pulley and a friction pulley of pulling pin, and the annulus that the rope yarn on the take-up friction pulley passes on the plug socket links to each other with the outer end of cross clamp; Be provided with a latch that cooperates with cross clamp on plug socket, the rope yarn on the friction pulley of pulling pin links to each other with the latch upper end.
Described trapped personnel lifting device comprises a connection-peg that cooperates with plug socket, and the connection-peg below is fixed with a contractile sliding sleeve.
Above switch board, be fixed with display screen.
Inside at switch board is provided with stand-by power supply.
Below crossbeam, be fixed with illuminating lamp and camera.
The utility model is rational in infrastructure, and stable performance only needs operating personnel in aboveground operation, can reliably down-hole trapped personnel be rescued by quick and safe; When two supports of supporting and positioning device are opened, whole Underwell rescue device can be located, make deliverance apparatus keep stable, so that crossbeam and longeron action, the rescue trapped personnel; Crossbeam and longeron adopt extensible canopy, can make things convenient for aboveground operating personnel to adjust the horizontal and lengthwise position of the trapped personnel lifting device of below by switch board, with convenient trapped personnel are rescued; Tooth sector is set below supporting and positioning device, gear on the output shaft of steer motor of supporting and positioning device one side is mated, half gear is set below tooth sector, half gear cooperates with crossbeam gear on the crossbeam motor output shaft, vertical seat is set above longeron, vertical gear on vertical motor output shaft of vertical seat one side cooperates with the vertical deflecting roller on the longitudinal axis, can make operating personnel adjust the angle of trapped personnel lifting device arbitrarily, with convenient trapped personnel is rescued; Illuminating lamp and camera are set below crossbeam, display screen are set above switch board, can make aboveground operating personnel accurate the downhole rescuing process, guarantee the rescue success rate, avoid injuring trapped personnel.
Description of drawings:
Fig. 1 is the structural representation of the aboveground part of the utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of the utility model down-hole part.
Fig. 4 is that the D of Fig. 3 is to structural representation.
Fig. 5 is the A-A sectional structure schematic diagram of Fig. 4.
Fig. 6 is that F among Fig. 3 is to structural representation.
Fig. 7 is the B-B sectional structure schematic diagram of Fig. 5.
Fig. 8 is that the C of Fig. 7 is to structural representation.
Fig. 9 is the E-E sectional structure schematic diagram of Fig. 8.
Figure 10 is the structural representation of the utility model trapped personnel lifting device.
Figure 11 is the K-K sectional structure schematic diagram of Figure 10.
Figure 12 is the structural representation of the another kind of embodiment of the utility model trapped personnel lifting device.
Figure 13 is the left view of Figure 12.
Among the figure, 1, bearing; 2, switch board; 3, steel wire rope; 4, tooth sector; 5, steer motor; 6, half gear; 7, crossbeam motor; 8, crossbeam gear; 9, plug socket; 10, promote motor; 11, promote friction pulley; 12, rope sheave; 13, display screen; 14, support set; 15, support motor; 16, upper friction plate; 17, following friction plate; 18, gripper shoe; 19, screw rod; 20, supporting seat; 21, elevating bracket; 22, pole; 23, support; 24, chute; 25, beam casing; 26, expansion link; 27, flexible motor; 28, gear shaft; 29, belt pulley; 30, support; 31, flexible gear; 32, draw-in groove; 33, pinch roller; 34, perforation; 35, flat Xiao's seat; 36, flat Xiao; 37, pedestal; 38, vertical motor; 39, vertical gear; 40, longitudinal axis; 41, vertical deflecting roller; 42, carriage box; 43, connection-peg; 44, carriage box spring; 45, cross clamp; 46, cross spring; 47, cross supporting plate; 48, take-up motor; 49, take-up friction pulley; 50, the friction pulley of pulling pin; 51, annulus; 52, latch; 53, stand-by power supply; 54, illuminating lamp; 55, camera; 56, sliding sleeve.
The specific embodiment:
For clearly demonstrating the technical characterstic of this programme, below by the specific embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
Shown in Fig. 1～11, the utility model comprises and is located at aboveground bearing 1, be located at switch board 2 and lifting device on the bearing 1, lifting device links to each other with supporting and positioning device upper end in stretching into well by steel wire rope 3, the supporting and positioning device lower end is connected with tooth sector 4, gears engaged on tooth sector 4 and the steer motor 5 that is fixed on the supporting and positioning device bottom, be fixed with half gear 6 in tooth sector 4 lower ends, crossbeam is fixed on half gear 6 by rotating shaft, half gear 6 is connected with a joggle with the crossbeam gear 8 that is located at crossbeam motor 7 outputs on the crossbeam, end at crossbeam is connected with a vertical seat, vertically the seat below is connected with a longeron, the longeron lower end is provided with a plug socket 9, is plugged with the trapped personnel lifting device in the plug socket 9.
Described lifting device comprises the lifting motor 10 that is fixed on bearing 1 bottom, the sprocket wheel that promotes on motor 10 output shafts links to each other with the sprocket wheel of rope sheave 12 1 ends that are fixed on bearing 1 upper end through promoting friction pulley 11 by chain, and the steel wire rope 3 that twines on the rope sheave 12 links to each other with the supporting and positioning device upper end.
Described supporting and positioning device comprises support set 14, above support set 14, be provided with support motor 15, upper friction plate 16 in the output shaft of support motor 15 and the support set 14 is connected, following friction plate 17 belows are provided with supports the spring of friction plate 17 down, and the spring below is provided with the gripper shoe 18 that is connected on the support set 14; The screw rod 19 that following friction plate 17 belows are connected passes gripper shoe 18 and flexibly connects with the supporting seat 20 that is connected in support set 14 bottoms, thread bush is equipped with an elevating bracket 21 on screw rod 19, and two poles, 22 front ends that elevating bracket 21 both sides flexibly connect are inserted into respectively in the chute 24 of two supports 23 that flexibly connect with support set 14.
Described crossbeam and longeron are extensible canopy, described extensible canopy comprises beam casing 25 that is located at the outside and the expansion link 26 that is located at the mutual socket of some joints in the beam casing 25, on beam casing 25, be fixed with a flexible motor 27, flexible motor 27 links to each other by the belt pulley 29 on the gear shaft 28 of the expansion teeth wheels on belt and the beam casing 25 that is connected in expansion link 26 external parts, described expansion teeth wheels comprise the support 30 that is connected on the beam casing 25, gear shaft 28 two ends of flexible gear 31 snap in the draw-in groove 32 of support 30, the two ends of gear shaft 28 are connected with the spring of support 30 upper ends respectively, the both sides of flexible gear 31 are respectively equipped with a pinch roller 33, the gear teeth of flexible gear 31 are relative with perforation 34 positions on the expansion link 26, be provided with flat Xiao's seat 35 at the rear portion of each section telescopic bar 26, pinch roller 33 positions of corresponding flexible gear 31 both sides are respectively equipped with flat Xiao 36 of a band spring in flat Xiao's seat 35.
Described vertical seat comprises the pedestal 37 that links to each other with crossbeam, side at pedestal 37 is provided with vertical motor 38, vertically the vertical gear 39 on the output shaft of motor 38 meshes with vertical deflecting roller 41 of longitudinal axis 40 upper ends that are located at pedestal 37 middle parts, and longitudinal axis 40 lower ends and longeron are connected.
Described trapped personnel lifting device comprises a carriage box 42, be provided with a connection-peg 43 that cooperates with plug socket 9 in the upper end of carriage box 42, lower end at carriage box 42 is connected with cross clamp 45 by carriage box spring 44, in the cross clamp 45 by two cross springs 46 be fixed with respectively can about the two cross supporting plates 47 opened; Be fixed with a take-up motor 48 in the longeron outer lower portion, the output shaft of take-up motor 48 is provided with a take-up friction pulley 49 and a friction pulley 50 of pulling pin, and the annulus 51 that the rope yarn on the take-up friction pulley 49 passes on the plug socket 9 links to each other with the outer end of cross clamp 45; Be provided with a latch 52 that cooperates with cross clamp 45 on plug socket 9, the rope yarn on the friction pulley 50 of pulling pin links to each other with latch 52 upper ends.
Above switch board 2, be fixed with display screen 13.
Be provided with stand-by power supply 53 in the inside of switch board 2.
Below crossbeam, be fixed with illuminating lamp 54 and camera 55.
During use, fix aboveground bearing 1, promote motor 10 by switch board 2 controls and rotate, the Underwell rescue device that the steel wire rope on the rope sheave 12 3 connects is put into well through promoting friction pulley 11.Illuminating lamp 54 by being located at crossbeam below and camera 55 transfer back to the down-hole situation on the display screen 13 on the switch board 2, control Underwell rescue device with convenient aboveground operating personnel and enter appropriate location in the well smoothly, after treating that Underwell rescue device arrives the appropriate location, operating personnel close and promote motor 10, rotate by switch board 2 control support motor 15, upper friction plate 16 on support motor 15 output shafts drive friction plates 17 down with and the screw rod 19 of below rotate, the elevating bracket 21 that is located on the screw rod 19 rises under the drive of screw rod 19, pole 22 by both sides promotes two and supports 23 and prop to both sides, treat two support 23 contact with the borehole wall hold out against after, close support motor 15.At this moment, the rescue previous work is finished, and can carry out next step rescue work.Situation in the well of passing back according to camera 55, operating personnel are flexible by switch board 2 control crossbeams and longeron, the flexible motor 27 that can control earlier on the crossbeam rotates, rotate by belt driven gear axle 28, the gear teeth on the flexible gear 31 cooperate with the perforation 34 on the expansion link 26, driving expansion link 26 protracts, when treating near expansion link 26 rear ends, the pinch roller 33 of flexible gear 31 both sides begins to push flat Xiao 36 of the band spring that is fixed on the expansion link 26, treat that the gear teeth on the flexible gear 31 are when gear on the back expansion link 26 contacts, because back one expansion link 26 is higher than last expansion link 26, flexible gear 31 is elevated, pinch roller 33 discharges flat Xiao 36, flat Xiao 36 raises retaining in one expansion link, 26 the place aheads, back under the effect of spring, under the drive of flexible gear 31, back one expansion link 26 promotes last expansion link 26 and protracts, the back and the like directly cause crossbeam and drive longeron and extend the appropriate location.After crossbeam arrives the appropriate location, close the flexible motor 27 of crossbeam, the flexible motor 27 that starts longeron repeats above-mentioned action, and the trapped personnel lifting device that longeron is driven on the plug socket 9 is transferred to the position that is fit to the rescue trapped personnel.When the trapped personnel lifting device is transferred, control take-up motor 48 rotates, rope yarn on the take-up friction pulley 49 and the friction pulley 50 of pulling pin is transferred, when waiting to transfer to the appropriate location, the latch 52 of pulling pin on the rope yarn pulling plug socket 9 on the friction pulley 50 is opened, cross clamp 45 stretches downwards under the effect of carriage box spring 44 to be opened, when cross clamp 45 breaks away from carriage box 42, two cross supporting plates 47 under the effect of two cross springs 46 respectively to the left and right both sides open, form cross bearer with cross clamp 45, at this moment, operating personnel can discharge two by switch board 2 control support motor 15 and support 23, lifting motor on the control well 10 rotates then, lifts Underwell rescue device by steel wire rope 3, trapped personnel is upwards mentioned rescue.During downhole rescuing, improper if longeron is transferred the position, can control steer motor 5 and rotate, by tooth sector 4 drive crossbeams, longeron rotates, and makes longeron be in the suitable position of transferring.If it is improper that angle is transferred or succoured to longeron, can control crossbeam motor 7 and rotate, cooperates with half gear 6, drive longeron by crossbeam and rotate, transfer or succour angle to regulate longeron, the convenient trapped personnel of succouring.If the cross bearer position is improper, the vertical motor 38 that can control the longeron top rotates, and drives longerons and rotates by vertical gear 39, vertical deflecting roller 41, longitudinal axis 40, makes the cross bearer of longeron below turn to correct position, the convenient trapped personnel of succouring.
Shown in Figure 12～13, be the another kind of embodiment of trapped personnel lifting device.Described trapped personnel lifting device comprises a connection-peg 43 that cooperates with plug socket 9, and connection-peg 43 belows are fixed with a contractile sliding sleeve 56.
When if trapped personnel is in the big slightly rescue position of horizontal space, can use sliding sleeve 56 rescues, the flexible rotation of control crossbeam and longeron, sliding sleeve 56 is enclosed within on one's body the trapped personnel, control promotes motor 10 then, upwards lifts by steel wire rope 3, and sliding sleeve 56 can tighten up in the process that upwards promotes gradually, entangle trapped personnel firm, safe and reliable rescues trapped personnel.
The above-mentioned specific embodiment can not be as the restriction to the utility model protection domain, and for those skilled in the art, any alternate modification or conversion that the utility model embodiment is made all drop in the protection domain of the present utility model.
The utility model does not describe part in detail, is those skilled in the art of the present technique's known technology.
Claims (10)
1. well rescue machine, it is characterized in that: comprise being located at aboveground bearing, be located at switch board and lifting device on the bearing, lifting device links to each other with supporting and positioning device upper end in stretching into well by steel wire rope, the supporting and positioning device lower end is connected with tooth sector, tooth sector and the gears engaged that is fixed on the steer motor of supporting and positioning device bottom, be fixed with half gear in the tooth sector lower end, crossbeam is fixed on half gear by rotating shaft, half gear is connected with the crossbeam gears engaged of crossbeam motor output end on being located at crossbeam, end at crossbeam is connected with a vertical seat, vertically the seat below is connected with a longeron, the longeron lower end is provided with a plug socket, is plugged with the trapped personnel lifting device in the plug socket.
2. a kind of well rescue machine according to claim 1, it is characterized in that: described lifting device comprises the lifting motor that is fixed on the bearing bottom, the sprocket wheel that promotes on the motor output shaft links to each other with the sprocket wheel of rope sheave one end that is fixed on the bearing upper end through promoting friction pulley by chain, and the steel wire rope that twines on the rope sheave links to each other with the supporting and positioning device upper end.
3. a kind of well rescue machine according to claim 1, it is characterized in that: described supporting and positioning device comprises support set, above support set, be provided with support motor, upper friction plate in the output shaft of support motor and the support set is connected, following friction plate below is provided with supports the spring of friction plate down, and the spring below is provided with the gripper shoe that is connected on the support set; The screw rod that following friction plate below is connected passes gripper shoe and flexibly connects with the supporting seat that is connected in the support set bottom, thread bush is equipped with an elevating bracket on screw rod, and the two pole front ends that the elevating bracket both sides flexibly connect are inserted into respectively in two chutes that support that flexibly connect with support set.
4. a kind of well rescue machine according to claim 1, it is characterized in that: described crossbeam and longeron are extensible canopy, described extensible canopy comprises beam casing that is located at the outside and the expansion link that is located at the mutual socket of some joints in the beam casing, on beam casing, be fixed with a flexible motor, flexible motor links to each other by the belt pulley on the gear shaft of the expansion teeth wheels on belt and the beam casing that is connected in the expansion link external part, described expansion teeth wheels comprise the support that is connected on the beam casing, the gear shaft two ends of flexible gear snap in the draw-in groove of support, the two ends of gear shaft are connected with the spring of support upper end respectively, the both sides of flexible gear are respectively equipped with a pinch roller, the gear teeth of flexible gear are relative with the perforation position on the expansion link, be provided with flat Xiao's seat at the rear portion of each section telescopic bar, the puck position of corresponding flexible gear both sides is respectively equipped with flat Xiao of a band spring in flat Xiao's seat.
5. a kind of well rescue machine according to claim 1, it is characterized in that: described vertical seat comprises the pedestal that links to each other with crossbeam, side at pedestal is provided with vertical motor, vertically the vertical gear on the output shaft of motor meshes with vertical deflecting roller of the longitudinal axis upper end that is located at the pedestal middle part, and longitudinal axis lower end and longeron are connected.
6. a kind of well rescue machine according to claim 1, it is characterized in that: described trapped personnel lifting device comprises a carriage box, be provided with a connection-peg that cooperates with plug socket in the upper end of carriage box, lower end at the carriage box is connected with cross clamp by carriage box spring, in the cross clamp by two cross springs be fixed with respectively can about the two cross supporting plates opened; Be fixed with a take-up motor in the longeron outer lower portion, the output shaft of take-up motor is provided with a take-up friction pulley and a friction pulley of pulling pin, and the annulus that the rope yarn on the take-up friction pulley passes on the plug socket links to each other with the outer end of cross clamp; Be provided with a latch that cooperates with cross clamp on plug socket, the rope yarn on the friction pulley of pulling pin links to each other with the latch upper end.
7. a kind of well rescue machine according to claim 1 is characterized in that: described trapped personnel lifting device comprises a connection-peg that cooperates with plug socket, and the connection-peg below is fixed with a contractile sliding sleeve.
8. a kind of well rescue machine according to claim 1 is characterized in that: be fixed with display screen above switch board.
9. a kind of well rescue machine according to claim 1, it is characterized in that: the inside at switch board is provided with stand-by power supply.
10. a kind of well rescue machine according to claim 1 is characterized in that: be fixed with illuminating lamp and camera below crossbeam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202399877U CN201500394U (en) | 2009-10-21 | 2009-10-21 | Rescuing machine for well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202399877U CN201500394U (en) | 2009-10-21 | 2009-10-21 | Rescuing machine for well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201500394U true CN201500394U (en) | 2010-06-09 |
Family
ID=42451337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202399877U Expired - Fee Related CN201500394U (en) | 2009-10-21 | 2009-10-21 | Rescuing machine for well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201500394U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912672A (en) * | 2010-08-18 | 2010-12-15 | 范文利 | Deep well rescue device |
| CN101947371A (en) * | 2010-09-13 | 2011-01-19 | 浙江工业大学 | Agricultural deep-well aid device |
| CN102793988A (en) * | 2012-07-26 | 2012-11-28 | 刘永风 | Fishing device for small-aperture deep well |
-
2009
- 2009-10-21 CN CN2009202399877U patent/CN201500394U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912672A (en) * | 2010-08-18 | 2010-12-15 | 范文利 | Deep well rescue device |
| CN101912672B (en) * | 2010-08-18 | 2012-11-14 | 范文利 | Deep well rescue device |
| CN101947371A (en) * | 2010-09-13 | 2011-01-19 | 浙江工业大学 | Agricultural deep-well aid device |
| CN101947371B (en) * | 2010-09-13 | 2012-11-14 | 浙江工业大学 | Agricultural deep-well aid device |
| CN102793988A (en) * | 2012-07-26 | 2012-11-28 | 刘永风 | Fishing device for small-aperture deep well |
| CN102793988B (en) * | 2012-07-26 | 2015-05-06 | 刘永风 | Fishing device for small-aperture deep well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20111021 |