CN102659051B - Traction lifting tool convenient for heat dissipation - Google Patents
Traction lifting tool convenient for heat dissipation Download PDFInfo
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- CN102659051B CN102659051B CN201210156123.5A CN201210156123A CN102659051B CN 102659051 B CN102659051 B CN 102659051B CN 201210156123 A CN201210156123 A CN 201210156123A CN 102659051 B CN102659051 B CN 102659051B
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 22
- 230000005855 radiation Effects 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 12
- 230000009977 dual effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- HCOLPNRPCMFHOH-UHFFFAOYSA-N Prodigiosin Natural products CCCCCC1C=C(C=C/2N=C(C=C2OC)c3ccc[nH]3)N=C1C HCOLPNRPCMFHOH-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- TWFGRJUTAULJPZ-USZBIXTISA-N prodigiosin Chemical compound N1=C(C)C(CCCCC)=C\C1=C/C1=NC(C=2[N]C=CC=2)=C[C]1OC TWFGRJUTAULJPZ-USZBIXTISA-N 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a traction lifting tool convenient for heat dissipation, which comprises a casing, a hub, a rear hook and a motor wherein the hub is wound with a rope; the fixed end of the rope and the hub are fixed together; the free end of the rope is connected with a front hook; the rear hook and the casing are oppositely fixed, and the rear hook is exposed out of the rear end of the casing; the motor is used for driving the hub to rotate; and the shell of the motor is provided with heat emission holes. The traction lifting tool is characterized by also comprising a heat emission shell in which a heat emission channel is arranged; the heat emission shell is provided with a perforation of which the appearance is matched with the shell of the motor; the wall of the perforation is provided with an inlet communicated with the heat emission channel; the outlet of the heat emission channel is near an opening at the front end of the casing; the heat emission shell is sheathed and fixedly arranged on the shell of the motor; and the heat emission holes are located in the inlet on the wall of the perforation. Heat generated by the motor is emitted from the opening at the front end of the casing through the heat emission holes and the heat emission channel on the shell of the motor, and the heat generated by the motor can also be fully and rapidly emitted through the guidance of the heat emission shell without additionally arranging heat emission holes on the shell.
Description
Technical field
The present invention relates to a kind of traction lifting device, relate in particular to a kind of traction lifting device of being convenient to heat radiation, this traction lifting device can be to adopt motor as the various traction lifting devices of propulsion source, for example, draw cucurbit.
Background technology
Electric block is mainly used in promoting or traction object, mainly comprise electrical motor, be arranged on the operation reductor on service meter, be arranged on the cucurbit outer cover of service meter below, be arranged on the reel in cucurbit outer cover, the suspension hook group that is arranged on cucurbit outer cover below forms, and on cucurbit outer cover, is installed with electrical motor, in cucurbit outer cover, is provided with reductor.If the patent No. is Chinese utility model patent < < electric block > > of ZL201020629621.3 (notification number is CN201882839U), and the patent No. is Chinese utility model patent < < Novel electric block > > of ZL200920296981.3 (notification number is CN201605125U), they have all disclosed the structure of electric block.Existing electric block is generally used as large-scale lifting appliance, and be fixed on certain eminence and use, generally only as upwards drawing object, use, however a lot of occasion, as needed to draw object in factory building or on road, so existing electric block has been used with regard to being inconvenient to.
For the deficiency of aforementioned present situation, the applicant has invented a kind of electric block of Portable hand, comprises the shell with handle, and the rear end of shell is provided with aft hook; The first support and the second support, they are parallel to each other and are spaced apart and arranged in shell; Wheel hub, is rotatably supported between described the first support and the second support, on described wheel hub, is wound with rope, and the front end that the free end of rope passes shell is connected with front hook; Motor, is supported between described the first support and the second support, and the axially spaced-apart certain distance of this motor and described wheel hub, and the output shaft of this motor is in transmission connection and is rotated with drive hub by reduction gearing mechanism and described wheel hub.
No matter be large-scale or portable traction lifting device, it all adopts motor as propulsion source, motor is core component, the quality of motor radiating directly affects the service life of motor, therefore on motor housing, be equipped with louvre, because motor is generally arranged in housing, for the heat that the louvre from motor housing is given out can rapidly and efficiently shed housing, general those skilled in the art can expect also arranging louvre on housing again.Its shortcoming is, extraneous foreign matter can enter into from the louvre of housing in housing, and then the drive disk assembly of impact or damage enclosure interior, on housing, set up louvre in addition, the noise of motor can pass through louvre, and the opening of traction lifting device sidepiece goes out to diffuse out, cause the excessive defect of noise in product use procedure.
Existing traction lifting device does not arrange antiwind structure in addition, steel wire cable in existing wheel hub is freely arranged in turning course, steel wire cable is rambling arranges and can cause in electric block steel wire cable to be overlapping and at random, cause the very large friction drag of generation between steel wire cable, cause the wearing and tearing of steel wire cable, also easily because being wound around confusion, the inhomogeneous steel wire cable stuck phenomenon that produces, cause steel wire cable revolution not smooth, use inconvenience, and because steel wire cable is disorderly and unsystematic, arrange and reduce the length that wheel hub holds steel wire cable.
Summary of the invention
Technical matters to be solved by this invention be for above-mentioned prior art present situation, provide a kind of without on shell, arrange louvre also can fast internal heat be shed outside housing being convenient to heat radiation traction lifting device.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of traction lifting device of being convenient to heat radiation, comprises shell; Wheel hub, is rotatably supported in described shell, on described wheel hub, is wound with rope, and fixed end and the wheel hub of rope are fixed, and the free end of rope passes the opening of shell front end and is connected with front hook; Aft hook, its rear end of fixing and exposing outside shell relative to shell; In order to the motor of drive hub rotation, to fix in the enclosure, the housing of motor is provided with louvre; It is characterized in that: also comprise that inside has the radiating shell of heat dissipation channel, on radiating shell, have the perforation that the housing of profile and motor matches, on the hole wall of perforation, there is the import being communicated with described heat dissipation channel, the opening of the outlet adjacent housings front end of heat dissipation channel, described radiating shell is by boring a hole sheathed and being fixed on the housing of motor, and the louvre on the housing of motor is positioned at the import on perforation hole wall.
Above-mentioned radiating shell has fore shell and back cover is involutory fixedly forms.This radiating shell structure is convenient to assembling, and is convenient to form the ring-type import in heat dissipation channel and perforation in radiating shell.Heat dissipation channel is dwindled to outlet gradually by interior, forms like this collection and lead effect in heat dissipation channel, and hot gas is convenient to form turbulence effects in heat dissipation channel, can make hot gas shed faster.
In above-mentioned shell, be fixed with the first support and second support of setting spaced in parallel to each other, the rear end of the first support and the second support is overhanging goes out shell, described wheel hub is rotatably supported between described the first support and the second support, motor is fixed between the first support and the second support, and described aft hook is rotatably connected on the rear end of the first support and the second support.The first support and the second support provide suitable installation position to wheel hub and motor, we can first be installed to the parts such as wheel hub and motor on the first support and the second support in advance like this, and then the first support and the second support are fixed to and in shell, complete whole installation.
For can drive rope uniform sequential be wrapped on wheel hub, make rope not easy to wear in wrapup procedure, and there will not be card rope phenomenon.This traction lifting device also comprises pressing plate, and its rear portion can swing up and down and be supported between described the first support and the second support, described in the lower surface of this pressing plate is compressed on, is wound on the rope on wheel hub; Extension spring, the lower end of extension spring is fixed on the adapter shaft at middle part between the first support and the second support, and the upper end of extension spring is fixed on pressing plate, thereby is wound in the trend on the rope on wheel hub described in pressing plate being kept down be pressed on.
Pressing plate and extension spring in the middle of support, have only been increased, described in keeping down pressing plate to be pressed on, extension spring is wound in the trend on the rope on wheel hub, like this when rope backrush process occurs starting to have irregular overlapping sign as rope, pressing plate just presses to rope with upper stage maintenance level and prevents that rope is at random, reduce caused steel rope abrasion at random, guarantee that rope is wrapped on wheel hub uniform sequentially simultaneously, effectively avoid rope in backrush process because being overlapping, to produce the bad card line situation of loop line, it is simple, easy for installation that this increases block construction.
Improve further, the side face of above-mentioned wheel hub is provided with plug helix, and this spiral fluted concave part profile and described rope are suitable.Arrange plug helix can make rope in starting removal process along plug helix rolling, specific running orbit is provided to the backrush of the initial first lap of rope, further guarantee rope from initial first lap start just can be uniform sequential be wrapped in wheel hub, more effectively avoid in backrush process rope to be overlapping and produce the bad card line situation of loop line.
The front of above-mentioned pressing plate is along K/UP perk.Arc because the front of pressing plate is upturned along one-tenth, plays certain guiding function to the backrush of rope, prevents that rope from causing the wearing and tearing of rope with the front of pressing plate in backrush process along interference.
The rear portion of above-mentioned pressing plate has the axis hole that broad ways runs through, and on the inwall of described the first support and the second support, is fixed with rotating shaft, and described rotating shaft is plugged in the axis hole of pressing plate.It is rotatably installed in the structure in support for rotating shaft.
The lower hook portion of above-mentioned extension spring hooks and is located on described adapter shaft, and the perforation that the upper hook portion of extension spring passes pressing plate hooks afterwards and is located on the bayonet lock that is positioned at pressing plate top.This structure is convenient to being connected between extension spring and adapter shaft and pressing plate.
The rear end of above-mentioned the first support and the second support is stretched out shell backward, in the rear end of the first support and the second support, is connected with aft hook, and the free end of described rope is connected with front hook after passing the front end of shell.Arrange front hook convenient be pulled object and be connected, aft hook is set and facilitates shell is connected with fixed position.
Above-mentioned aft hook is rotatably connected on the rear end of the first support and the second support, and aft hook also can directly be fixed on the rear portion of shell certainly, and described front hook is rotatably connected on the free end of rope.Aft hook and front hook are rotatable in addition, and aft hook and front hook can be made suitable adjustment along with the angle of traction goods like this.
The output shaft of above-mentioned motor is in transmission connection and is rotated with drive hub by planetary gear speed reducer and described wheel hub.Planetary gear reducing mechanism has advantages of deceleration successful, and the output shaft of motor also can be connected with wheel hub by other speed reduction gearing certainly.
Above-mentioned planetary gear reducing mechanism comprises revolvable dual gear, compound planet gear, described dual gear has helical wheel portion and pinion part, helical teeth portion engagement on the output shaft of described helical wheel portion and motor, described compound planet gear is arranged in reducing gearbox, this reducing gearbox is fixed on the outer face of the first support, in described reducing gearbox, be rotatablely equipped with gear, three miniature gears engagements in the little tooth portion of gear and compound planet gear, the big gearing part of gear stretches out reducing gearbox front end outward and meshes by the pinion part transmission of transition gear and dual gear; The center position of the gear ring portion of described compound planet gear is fixed with can be with the driving gearshaft of gear ring portion rotation, on the lateral wall of described wheel hub, have connecting bore, in the hole wall of connecting bore, form internal tooth portion, described driving gearshaft be located in connecting bore and with the engagement of described internal tooth portion.
Compared with prior art, the invention has the advantages that: set up in the enclosure the radiating shell that inside has heat dissipation channel, radiating shell is sheathed and be fixed on electric machine casing, in while radiating shell, the outlet of heat dissipation channel closes on the opening of shell front end, the heat that motor produces sheds from the opening of shell front end via the louvre on electric machine casing, heat dissipation channel, without additionally offer louvre on shell, the heat that also can motor can be produced by the guiding of radiating shell fully and is rapidly derived; Because shell is not to be fixed on concrete certain position, can arbitrarily put, the cargo lifting that not only can make progress, can also horizontally tracting goods, so this traction slinger prodigiosin is arbitrarily used in each place, easy to use.
Accompanying drawing explanation
Fig. 1 is the perspective view of the embodiment of the present invention;
Fig. 2 is that the embodiment of the present invention is removed the perspective view after half housing;
Fig. 3 is that the embodiment of the present invention is removed the perspective view after housing;
Fig. 4 is that the embodiment of the present invention is removed the perspective view after housing and radiating shell;
Fig. 5 is that the embodiment of the present invention is removed the perspective view after half housing, the second support and radiating shell;
Fig. 6 is that in the embodiment of the present invention, radiating shell is arranged on the perspective view (removing fore shell) on motor;
Fig. 7 is the perspective view one of radiating shell in the embodiment of the present invention;
Fig. 8 is the perspective view two of radiating shell in the embodiment of the present invention;
Fig. 9 is the perspective view of the fore shell of radiating shell in the embodiment of the present invention;
Figure 10 is the perspective view of the back cover of radiating shell in the embodiment of the present invention;
Figure 11 is the cutaway view of planetary gear speed reducer in the embodiment of the present invention;
Figure 12 is the perspective view of wheel hub in the embodiment of the present invention;
Figure 13 is the perspective view of embodiment of the present invention center platen.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in Fig. 1～13, it is a preferred embodiment of the present invention.
A traction lifting device of being convenient to heat radiation, comprises the shell 1 with handle 19, and shell 1 has left and right two halves housing fixedly to form, and is also provided with the wire 20 that is connected with plug on housing, and plug does not show in drawing.
The first support 3a and the second support 3b, the first support 3a and the second support 3b are tabular, they are parallel to each other and are spaced apart and arranged in shell 1, and the rear end of the first support 3a and the second support 3b is stretched out shell 1 backward, in the rear end of the first support 3a and the second support 3b, are rotatably connected to aft hook 10.
As shown in figure 12, wheel hub 2, rotatably be supported between the first support 3a and the second support 3b, on wheel hub 2, be wound with rope 4, rope 4 is steel wire cable, and the fixed end of rope 4 and wheel hub 2 is fixing, and the free end of rope 4 is connected with front hook 11 after passing the opening of shell 1 front end, front hook 11 is rotatably connected in the circle portion that the free end of rope 4 forms, and wheel hub 2 rotationals are wrapped on wheel hub 2 rope 4 like this; The side face of wheel hub 2 is provided with plug helix 21, and concave part profile and the rope 4 of this plug helix 21 are suitable.
As Fig. 4, shown in 11, planetary gear speed reducer comprises revolvable dual gear 13, compound planet gear, dual gear 13 has helical wheel portion 131 and pinion part 132, helical teeth portion engagement on the output shaft 21 of helical wheel portion 131 and motor, compound planet gear is arranged in reducing gearbox 14, this reducing gearbox 14 is fixed on the outer face of the first support 3a, in reducing gearbox 14, be rotatablely equipped with gear 15, the little tooth portion 151 of gear 15 and three miniature gears 16a engagements in compound planet gear, outside the big gearing part 152 of gear, stretch out reducing gearbox 14 front ends and mesh by transition gear 17 and pinion part 132 transmissions of dual gear, the center position of the gear ring portion 18 of compound planet gear is provided with can be with the driving gearshaft 16b of gear ring portion 18 rotations, on the lateral wall of wheel hub 2, have connecting bore 22, in the hole wall of connecting bore 22, form internal tooth portion 23, driving gearshaft 16b is located in connecting bore 22 and with internal tooth portion 23 and meshes.
As Fig. 2, 3, 6～10, inside has the radiating shell 9 of heat dissipation channel 91, together with having fore shell 9a and back cover 9b to be combined to be connected by screw, radiating shell 9 forms, on radiating shell 9, have the perforation 92 that the housing of profile and motor 5 matches, on the hole wall of perforation 92, there is the import 93 being communicated with described heat dissipation channel 91, the opening 12 of outlet 94 adjacent housings 1 rear ends of heat dissipation channel 91, heat dissipation channel 91 is dwindled to exporting 94 gradually by interior, radiating shell 9 is 92 sheathed and be fixed on the housing of motor 5 by boring a hole, perforation 92 is close to the housing outer peripheral face of motor 5, louvre 52 on the housing of motor 5 is positioned at the import 93 on perforation 92 hole walls.
As shown in Fig. 2～5,13, pressing plate 6, its rear portion can swing up and down and be supported between the first support 3a and the second support 3b, the rear portion of pressing plate 6 has the axis hole 62 that broad ways runs through, on the inwall of the first support 3a and the second support 3b, be fixed with rotating shaft 31, rotating shaft 31 is plugged in the axis hole 62 of pressing plate, and the lower surface of pressing plate 6 is compressed on the rope 4 being wound on wheel hub 2, and the front of pressing plate 6 is along 61 K/UP perks.
As shown in Figure 5, extension spring 7, the lower hook portion of extension spring 7 hooks and is located on the adapter shaft 8 at middle part between the first support 3a and the second support 3b, the rear hook of perforation 63 that the upper hook portion of extension spring 7 passes pressing plate 6 is located on the bayonet lock 71 that is positioned at pressing plate 6 tops, thereby pressing plate 6 is kept down, is pressed on the trend on the rope 4 being wound on wheel hub 2.
This device can also have the current loading size circuit card of Presentation Function and the circuit card of current detecting and overload protection function, guarantees motor auto-breaking when load too high, extends motor service life.
During use, aft hook 10 is hung on to certain place, fixed position, motor 5 work, the forward rotation of motor 5 discharges rope 4 forward, until rope 4 is released into certain correct position, front hook 11 is hooked and is being pulled on object, control motor 5 rotates backward rope 4 is wrapped on wheel hub 2, front hook 11 on the free end of rope 4 pulls back object and moves towards fixed position, completes traction.
During work, the heat that motor 5 produces sheds from the opening 12 of shell front end via the louvre 52 on motor 5 housings, heat dissipation channel 91, without additionally offering louvre on shell 1, the heat that also can motor 5 can be produced by the guiding of the heat dissipation channel 91 in radiating shell 9 fully and is rapidly derived;
Pressing plate 6 and extension spring 7 in the middle of support, have been increased, described in keeping down pressing plate 6 to be pressed on, extension spring 7 is wound in the trend on the rope 4 on wheel hub 2, when rope 4 backrush processes, as rope 4 has, irregular overlapping appearance starts like this, pressing plate 6 just presses to rope 4 and upper stage maintenance level, prevent that rope 4 is at random, reduce the wearing and tearing of caused steel rope rope 4 at random, guarantee that rope 4 is wrapped on wheel hub 2 uniform sequentially simultaneously, this product, through test, can effectively avoid rope 4 in backrush process because being overlapping, to produce the bad card line situation of loop line.
Claims (10)
1. a traction lifting device of being convenient to heat radiation, comprises shell (1);
Wheel hub (2), rotatably be supported in described shell (1), on described wheel hub (2), be wound with rope (4), the fixed end of rope (4) and wheel hub (2) are fixing, and the free end of rope (4) passes the opening of shell (1) front end and is connected with front hook (11);
Aft hook (10), its rear end of fixing and exposing outside shell (1) relative to shell (1);
Motor (5) in order to drive hub (2) rotation, is fixed in shell (1), and the housing of motor is provided with louvre (52);
It is characterized in that: also comprise
Inside has the radiating shell (9) of heat dissipation channel (91), on radiating shell (9), have the perforation (92) that the housing of profile and motor (5) matches, on the hole wall of perforation (92), there is the import (93) being communicated with described heat dissipation channel (91), the opening (12) of outlet (94) adjacent housings (1) rear end of heat dissipation channel (91), described radiating shell (9) is sheathed and be fixed on the housing of motor (5) by perforation (92), and the louvre (52) on the housing of motor (5) is positioned at the import (93) on perforation (92) hole wall.
According to claim 1 be convenient to heat radiation traction lifting device, it is characterized in that: described radiating shell (9) has fore shell (9a) and back cover (9b) is involutory fixedly forms, described heat dissipation channel (91) is dwindled to outlet (94) gradually by interior.
According to claim 1 be convenient to heat radiation traction lifting device, it is characterized in that: the first support (3a) and the second support (3b) that in described shell (1), are fixed with setting spaced in parallel to each other, the rear end of the first support (3a) and the second support (3b) is overhanging goes out shell, described wheel hub (2) is rotatably supported between described the first support (3a) and the second support (3b), described motor is fixed between the first support (3a) and the second support (3b), and described aft hook (10) is rotatably connected on the rear end of the first support (3a) and the second support (3b).
4. the traction lifting device of being convenient to heat radiation according to claim 3, is characterized in that: also comprise
Pressing plate (6), its rear portion can swing up and down and be supported between described the first support (3a) and the second support (3b), is wound on the rope (4) on wheel hub (2) described in the lower surface of this pressing plate (6) is compressed on;
Extension spring (7), the lower end of extension spring (7) is fixed on the adapter shaft (8) that is positioned at middle part between the first support (3a) and the second support (3b), it is upper that the upper end of extension spring (7) is fixed on pressing plate (6), thereby be wound in the trend on the rope (4) on wheel hub (2) described in pressing plate (6) being kept down be pressed on.
5. the traction lifting device of being convenient to heat radiation according to claim 4, is characterized in that: the side face of described wheel hub (2) is provided with plug helix (21), and the concave part profile of this plug helix (21) and described rope (4) are suitable.
6. the traction lifting device of being convenient to heat radiation according to claim 4, is characterized in that: the front of described pressing plate (6) is along (61) K/UP perk.
According to claim 4 be convenient to heat radiation traction lifting device, it is characterized in that: the rear portion of described pressing plate (6) has the axis hole (62) that broad ways runs through, on the inwall of described the first support (3a) and the second support (3b), be fixed with rotating shaft (31), described rotating shaft (31) is plugged in the axis hole (62) of pressing plate.
According to claim 4 be convenient to heat radiation traction lifting device, it is characterized in that: the lower hook portion of described extension spring (7) hooks and is located at described adapter shaft (8) above, the rear hook of perforation (63) that the upper hook portion of extension spring (7) passes pressing plate (6) is located on the bayonet lock (71) that is positioned at pressing plate (6) top.
9. according to the traction lifting device of being convenient to heat radiation described in arbitrary claim in claim 1～8, it is characterized in that: the output shaft (51) of described motor (5) is in transmission connection and is rotated with drive hub (2) by planetary gear speed reducer and described wheel hub (2).
According to claim 9 be convenient to heat radiation traction lifting device, it is characterized in that: described planetary gear speed reducer comprises revolvable dual gear (13), compound planet gear, described dual gear (13) has helical wheel portion (131) and pinion part (132), helical teeth portion engagement on the output shaft (51) of described helical wheel portion (131) and motor, described compound planet gear is arranged in reducing gearbox (14), this reducing gearbox (14) is fixed on the outer face of the first support (3a), in described reducing gearbox (14), be rotatablely equipped with gear (15), the little tooth portion (151) of gear (15) meshes with three miniature gearss (16a) in compound planet gear, the big gearing part of gear (152) is outer stretches out reducing gearbox (14) front end and pinion part (132) the transmission engagement with dual gear by transition gear (17), the center position of the gear ring portion (18) of described compound planet gear is provided with can be with the driving gearshaft (16b) of gear ring portion (18) rotation, on the lateral wall of described wheel hub (2), have connecting bore (22), in the hole wall of connecting bore (22), form internal tooth portion (23), described driving gearshaft (16b) is located in connecting bore (22) and meshes with described internal tooth portion (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210156123.5A CN102659051B (en) | 2012-05-16 | 2012-05-16 | Traction lifting tool convenient for heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210156123.5A CN102659051B (en) | 2012-05-16 | 2012-05-16 | Traction lifting tool convenient for heat dissipation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102659051A CN102659051A (en) | 2012-09-12 |
| CN102659051B true CN102659051B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210156123.5A Active CN102659051B (en) | 2012-05-16 | 2012-05-16 | Traction lifting tool convenient for heat dissipation |
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| CN (1) | CN102659051B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112357803A (en) * | 2020-10-27 | 2021-02-12 | 王孙强 | A draw gear for construction |
| CN113003460A (en) * | 2021-03-12 | 2021-06-22 | 上海外高桥造船有限公司 | Marine watertight door hoist and mount frock |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409689A (en) * | 1999-12-13 | 2003-04-09 | Kci国际有限公司 | Hoisting apparatus |
| WO2003042541A1 (en) * | 2001-11-15 | 2003-05-22 | Leybold Vakuum Gmbh | Cooled screw-type vacuum pump |
| CN101007619A (en) * | 2007-01-25 | 2007-08-01 | 常熟海鸥起重机械有限公司 | Minisize electric hoist |
| CN201033719Y (en) * | 2007-03-27 | 2008-03-12 | 金华市诺王机电产品开发有限公司 | Winch |
| CN202625712U (en) * | 2012-05-16 | 2012-12-26 | 宁波三罗机械有限公司 | Traction lifting tool facilitating heat dissipation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8253285B2 (en) * | 2007-04-27 | 2012-08-28 | Hitachi Koki Co., Ltd. | Power tool |
-
2012
- 2012-05-16 CN CN201210156123.5A patent/CN102659051B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409689A (en) * | 1999-12-13 | 2003-04-09 | Kci国际有限公司 | Hoisting apparatus |
| WO2003042541A1 (en) * | 2001-11-15 | 2003-05-22 | Leybold Vakuum Gmbh | Cooled screw-type vacuum pump |
| CN101007619A (en) * | 2007-01-25 | 2007-08-01 | 常熟海鸥起重机械有限公司 | Minisize electric hoist |
| CN201033719Y (en) * | 2007-03-27 | 2008-03-12 | 金华市诺王机电产品开发有限公司 | Winch |
| CN202625712U (en) * | 2012-05-16 | 2012-12-26 | 宁波三罗机械有限公司 | Traction lifting tool facilitating heat dissipation |
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| CN102659051A (en) | 2012-09-12 |
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