CN204607509U - A kind of gear unit and gear rack lifting system thereof - Google Patents
A kind of gear unit and gear rack lifting system thereof Download PDFInfo
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- CN204607509U CN204607509U CN201520062004.2U CN201520062004U CN204607509U CN 204607509 U CN204607509 U CN 204607509U CN 201520062004 U CN201520062004 U CN 201520062004U CN 204607509 U CN204607509 U CN 204607509U
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- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 10
- 230000001360 synchronised effect Effects 0.000 description 4
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- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
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Abstract
Basis is practical newly discloses a kind of gear unit and gear rack lifting system thereof.Described gear unit comprises reductor and output pinion, reductor comprises output shaft, output shaft comprises: the first output shaft, the second output shaft and the 3rd output shaft, output pinion to be set on the second output shaft and to be threaded with the second output shaft, first output shaft is connected with one end of the second output shaft, second output shaft the 3rd output shaft connects, and the first output shaft is arranged with the first springing, the 3rd output shaft is arranged with the second springing.Described gear rack lifting system comprises at least four gear units.The utility model is converted to axial motion along output shaft by screw thread the rotary motion of output pinion, solve the nonsynchronous phenomenon of output pinion, the gear rack lifting system that the utility model embodiment provides, when not changing the lifting principle of traditional jacking system, only innovation is optimized to reductor part, reduces productive costs.
Description
Technical field
Basis is practical newly relates to equipment On The Offshore Platform field, particularly a kind of gear unit and gear rack lifting system thereof.
Background technology
Gear rack lifting system is the lifting type of drive that self-elevating ocean platform is most widely used, and wherein the gear rack lifting system of motorized motions is because its waters of applying more Development volue of tool deeply.
The rack-and-gear lifting of existing motorized motions comprises string pipe rack and six gear units, the output pinion that each gear unit includes motor, reductor and is fixed on the output shaft of reductor, the output shaft of output pinion and reductor is integral type structure, six gear units are symmetrically distributed in the both sides of string pipe rack, and are engaged with string pipe rack by output pinion.But along with the increase of platform load, output pinion needs to bear larger load, but output pinion bearing load is limited in one's ability, can only adapt to the load of platform by increasing gear unit, such gear unit may be increased to the lift capability that eight, ten or more improve gear rack lifting system.
In this practical new process of realization, designer finds that prior art at least exists following problem:
In the process increasing gear unit, may have the phenomenon of asynchronous running between output pinion, namely output pinion chord pipe rack does not fully engage, and is in non-fully contact condition, and other output pinion so just may be caused to overload.And the redundant ability increasing merely output pinion is economically also improper.
Practical fresh content
In order to solve the problem that may have asynchronous running in prior art between output pinion, this practical new embodiment provides a kind of gear unit and gear rack lifting system thereof.Described technical scheme is as follows:
On the one hand, this practical new embodiment provides a kind of gear unit, described gear unit comprises reductor and output pinion, described reductor comprises: midship mounting, output shaft and bearing, described output shaft comprises: the first output shaft, second output shaft and the 3rd output shaft, described output pinion to be set on described second output shaft and to be threaded with described second output shaft, one end of described first output shaft is stretched in described midship mounting, the other end of described first output shaft is connected with one end of described second output shaft, the other end of described second output shaft is connected with one end of described 3rd output shaft, described bearing is arranged on the other end of described 3rd output shaft, described one end of described first output shaft is provided with the shaft shoulder, described first output shaft is arranged with the first springing, the two ends of described first springing are against on the described shaft shoulder and described output pinion respectively, described 3rd output shaft is arranged with the second springing, on the lasso that the two ends of described second springing are against described bearing respectively and described output pinion.
Particularly, described first springing comprises: annular pressing plate, first elastomeric element, the first stay bearing plate being set in the sleeve outside described first elastomeric element and being set on described first output shaft and described second output shaft, described annular pressing plate to be set on described first output shaft and to be against on the described shaft shoulder, one end of described sleeve is arranged around the outer wall of described annular pressing plate, the other end of described sleeve is fixed on a side end face of described first stay bearing plate, and the length direction of described sleeve is identical with the axis direction of described first output shaft, the opposite side end face of described first stay bearing plate is against on described output pinion, the two ends of described first elastomeric element are against on described annular pressing plate and described first stay bearing plate respectively.
Further, the size of the end face of side that described first stay bearing plate contacts with described output pinion is less than the size of a relative side end face of described first stay bearing plate.
Further, the outside dimension of described second output shaft is equal with the outside dimension of described first output shaft, the internal diameter of described first stay bearing plate is provided with two annular inner race, two described annular inner race are arranged around described first output shaft and described second output shaft respectively, and the diameter around the annular inner race of described first output shaft is less than the diameter of annular inner race described in another.
Further, described first elastomeric element comprises at least one first disc spring, and described first disc spring is set on described first output shaft.
Further, the outside dimension of described first elastomeric element is identical with the outside dimension of described annular pressing plate.
Particularly, described second springing comprises: annular backing plate, the second elastomeric element and the second stay bearing plate, one side end face of described annular backing plate is against on described output pinion, one side end face of the second stay bearing plate is against on the lasso of described bearing, and the two ends of described second elastomeric element are against between described annular backing plate and described second stay bearing plate respectively.
Further, described second elastomeric element comprises at least one second disc spring, and described second disc spring is set on described 3rd output shaft.
Particularly, the outside dimension of described 3rd output shaft is less than the outside dimension of described second output shaft.
On the other hand, this practical new embodiment provides a kind of gear rack lifting system, the drive element that described gear rack lifting system comprises at least four above-mentioned gear units, leg-chord pipe, string pipe rack and is in transmission connection with described gear unit, described string pipe rack is fixed on described leg-chord pipe, described gear unit is arranged in the both sides of described string pipe rack, the output pinion of described gear unit engages with described string pipe rack, is arranged in the screw thread rotation direction opposed of two described output pinions of described string pipe rack both sides.
The beneficial effect that the technical scheme that this practical new embodiment provides is brought is: the gear unit that the utility model embodiment provides, when have output pinion because certain reason do not have chord pipe rack fully to contact or even with string pipe rack gap time, the load of platform is just born by remaining output pinion, remaining output pinion just has the trend of overload like that, platform will be caused like this to have the trend moved downward, thus drive output pinion to rotate on the second output shaft according to the direction contrary with sense of motion, output pinion is caused to extrude the first springing further thus, first springing can be compressed further stops the continuation of output pinion to rotate, now, the rotation of minute angle has been carried out owing to contacting other good output pinions, namely platform have dropped one section of small distance, at this moment that output pinion of not fully contact or not contact will fully contact by chord pipe rack, make output pinion can synchronized operation.The gear rack lifting system that the utility model embodiment provides, comprises the gear unit that the utility model embodiment provides, and makes the output pinion of this gear rack lifting system can synchronized operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in this practical new embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only these practical some embodiments newly, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the gear unit that this practical new embodiment one provides;
Fig. 2 is the structural representation of the first stay bearing plate that this practical new embodiment one provides;
Fig. 3 is the local structure schematic diagram of the gear rack lifting system that this practical new embodiment two provides;
Fig. 4 is the package assembly schematic diagram of the gear rack lifting system that this practical new embodiment two provides.
Detailed description of the invention
For making this practical new object, technical scheme and advantage clearly, below in conjunction with accompanying drawing, this practical new embodiment is described in further detail.
Embodiment one
The utility model embodiment provides a kind of gear unit, as shown in Figure 1, gear unit comprises reductor a and output pinion 7, this reductor a comprises: midship mounting 1, output shaft and bearing 2, this output shaft comprises: the first output shaft 4, second output shaft 5 and the 3rd output shaft 6, output pinion 7 to be set on the second output shaft 5 and to be threaded with the second output shaft 5, one end of first output shaft 4 is stretched in midship mounting 1, the other end of the first output shaft 4 is connected with one end of the second output shaft 5, the other end of the second output shaft 5 is connected with one end of the 3rd output shaft 6, bearing 2 is arranged on the other end of the 3rd output shaft 6, one end of first output shaft 4 is provided with shaft shoulder 4a, first output shaft 4 is arranged with the first springing 8, the two ends of the first springing 8 are against on shaft shoulder 4a and output pinion 7 respectively, 3rd output shaft 6 is arranged with the second springing 3, on the lasso (this lasso can be the inner ring of bearing 2) that the two ends of the second springing 3 are against bearing 2 respectively and output pinion 7.Wherein, the initial condition of the first springing 8 and the second springing 3 is its pre-compressed state, for ensureing that the first springing 8 and the second springing 3 can provide enough tension force.Wherein, reductor a can also comprise the bearing mounting sleeve 20 (see Fig. 4) of the other end being fixed on the 3rd output shaft 6, and bearing 2 is arranged on the other end of the 3rd output shaft 6 by bearing mounting sleeve 20.Specifically add man-hour, the first output shaft 4, second output shaft 5 and the 3rd output shaft 6 can be cast as one.The parameters such as the head number of screw thread and helical angle need calculate according to actual load.
Particularly, first springing 8 comprises: annular pressing plate 9, first elastomeric element 10, the first stay bearing plate 12 being set in the sleeve 11 outside the first elastomeric element 10 and being set on the first output shaft 4 and the second output shaft 5, annular pressing plate 9 to be set on the first output shaft 4 and to be against on shaft shoulder 4a, one end of sleeve 11 is arranged around the outer wall of annular pressing plate 9, the other end of sleeve 11 is fixed on a side end face of the first stay bearing plate 12, and the length direction of sleeve 11 is identical with the axis direction of the first output shaft 4, the opposite side end face of the first stay bearing plate 12 is against on output pinion 7, the two ends of the first elastomeric element 10 are against on annular pressing plate 9 and the first stay bearing plate 12 respectively.Wherein, annular pressing plate 9 can be circular flange plate.Sleeve 11 can play directional tagging to the first elastomeric element 10, and meanwhile, this sleeve 11 can be welded as a whole with the first stay bearing plate 12, for improving the steadiness of sleeve 11 and the first stay bearing plate 12.In the process that output pinion 7 rotates, when output pinion 7 extrudes the first springing 8 to the direction of the first output shaft 4, first stay bearing plate 12 is set on the first output shaft 4 and the second output shaft 5, can be able to prevents output pinion 7 from interfering the first output shaft 4 by this first stay bearing plate 12.
Further, as shown in Figure 2, the size of the end face of side that the first stay bearing plate 12 contacts with output pinion 7 is less than the size of a relative side end face of the first stay bearing plate 12.This first stay bearing plate 12 can be the loop configuration of pellet type, first stay bearing plate 12 can transmit the load produced by the first elastomeric element 10, reduce the first stay bearing plate 12 and the area of contact of output pinion 7, prevent output pinion 7 undue wear first stay bearing plate 12.
Further, as shown in Figure 2, the outside dimension of the second output shaft 5 can be equal with the outside dimension of the first output shaft 4, the internal diameter of the first stay bearing plate 12 is provided with two annular inner race, the diameter of two annular inner race is respectively D1 and D2, two annular inner race are arranged around the first output shaft 4 and the second output shaft 5 respectively, diameter D1 around the annular inner race of the first output shaft 4 is less than the diameter D2 of another annular inner race, namely D1 is less than D2, can ensure that the first stay bearing plate 12 can not with the thread interference on the second output shaft 5 like this, ensure the axially smoothly movement of the first stay bearing plate 12 at output shaft.
Further, the first elastomeric element 10 can comprise at least one first disc spring, and this first disc spring is set on the first output shaft 4.In the present embodiment, the first elastomeric element 10 selects 4 first disc springs, meanwhile, can adjust spring force by the quantity controlling the first disc spring.Easily know, in other embodiments, the first elastomeric element 10 can also be the elastomeric elements such as coil spring.
Further, the outside dimension of the first elastomeric element 10 can be identical with the outside dimension of annular pressing plate 9.Sleeve 11 can be made like this along more smooth and easy during the moving axially of output shaft.
Particularly, second springing 3 comprises: annular backing plate 13, second elastomeric element 14 and the second stay bearing plate 15, one side end face of annular backing plate 13 is against on output pinion 7, one side end face of the second stay bearing plate 15 is against on the lasso of bearing 2, and the two ends of the second elastomeric element 14 are against between annular backing plate 13 and the second stay bearing plate 15 respectively.
Further, the second elastomeric element 14 can comprise at least one second disc spring, and this second disc spring is set on the 3rd output shaft 6.In the present embodiment, the second elastomeric element 14 selects 4 second disc springs, meanwhile, can adjust spring force by the quantity controlling the second disc spring.Easily know, in other embodiments, the second elastomeric element 14 can also be the elastomeric elements such as coil spring.
Particularly, the outside dimension of the 3rd output shaft 6 is less than the outside dimension of the second output shaft 5.Can conveniently install or change output pinion 7 by the outside dimension reducing the second output shaft 5.
The gear unit that the utility model embodiment provides, when have output pinion because certain reason do not have chord pipe rack fully to contact or even with string pipe rack gap time, the load of platform is just born by remaining output pinion, remaining output pinion just has the trend of overload like that, platform will be caused like this to have the trend moved downward, thus drive output pinion to rotate on the second output shaft according to the direction contrary with sense of motion, output pinion is caused to extrude the first springing further thus, first springing can be compressed further stops the continuation of output pinion to rotate, now, the rotation of minute angle has been carried out owing to contacting other good output pinions, namely platform have dropped one section of small distance, at this moment that output pinion of not fully contact or not contact will fully contact by chord pipe rack, make output pinion can synchronized operation.The gear unit that the utility model embodiment provides, by screw thread, the rotary motion of output pinion is converted to axial motion along output shaft, solve the nonsynchronous phenomenon of output pinion, greatly reduce the redundancy cost of parts, add first springing and the second springing with buffer capacity simultaneously, rigid shock can be become soft impulse by the first springing and the second springing, substantially increase impact resistance and the safety of gear unit, and structure simple possible.
Embodiment two
The utility model embodiment provides a kind of gear rack lifting system, as shown in Figure 3 and Figure 4, this gear rack lifting system comprises at least four gear unit, leg-chord pipe 16, string pipe rack 17 and drive elements 18 of being in transmission connection with gear unit as provided in embodiment one, string pipe rack 17 is fixed on leg-chord pipe 16, gear unit is arranged in the both sides of string pipe rack 17, the output pinion 7 of gear unit engages with string pipe rack 17, is arranged in the screw thread rotation direction opposed of two output pinions 7 of string pipe rack 17 both sides.
Particularly, drive element 18 can be motor.
Particularly, this gear rack lifting system can also comprise erecting frame 19, one end of this erecting frame 19 can be fixed on midship mounting 1, the other end of this erecting frame 19 can be fixedly connected with bearing mounting sleeve 20, this erecting frame 19 can pass through bearing mounting sleeve 20 fixed type bearing 2, thus realizes fixing to axle.
Simply introduce this gear unit below solving principle of work when to there is asynchronous running between output pinion:
Rise self-elevating ocean platform larger compared to the load of falling needed for self-elevating ocean platform, therefore this enforcement introduces its principle to rise self-elevating ocean platform, particularly, when self-elevating ocean platform is in peaceful operating mode, when the engagement of output pinion 7 chord pipe rack 17 is good, namely there is not asynchrony phenomenon, then output pinion 7 rotates according to the direction of arrow shown in Fig. 3, namely in Fig. 3, the output pinion 7 in left side rotates clockwise, in Fig. 3, the output pinion 7 on right side rotates counterclockwise, for the output pinion 7 in left side in Fig. 3, because output pinion 7 and the second output shaft 5 are threaded connection, output pinion 7 has the axial trend of moving to the axis direction of the first output shaft 4 along the second output shaft 5, because the first springing 8 is through precompressed compression, make reductor a can provide enough large tension force for stop output pinion 7 along the second output shaft 5 axially to the moving of axis direction of the first output shaft 4, then output pinion 7 can only rotate together along with the second output shaft 5, thus drive string pipe tooth 17 upward movements, final drive platform rises.
When there being output pinion 7 because certain reason do not have chord pipe rack 17 fully contact or even with string pipe rack 17 gap time, the load of platform is just born by remaining output pinion 7, remaining output pinion just has the trend of overload like that, platform will be caused like this to have the trend moved downward, thus drive output pinion 7 to rotate on the second output shaft 5 according to the direction contrary with the direction of arrow shown in Fig. 3, cause output pinion 7 extruding the first springing 8 further thus, because the first springing 8 is through precompressed compression, and pre compressed magnitude is evenly distributed on each output pinion 7 according to the maximum load of platform, the load that corresponding to the first springing 8 again needs calculates, therefore squeese pressure can more than the tension force of the pre compressed magnitude correspondence generation of the first springing 8, first springing 8 can be compressed further stops the continuation of output pinion 7 to rotate.Now, small angle is have rotated according to arrow opposite sense owing to contacting other good output pinions 7, namely platform have dropped one section of small distance, at this moment that output pinion 7 of not fully contact or not contact will fully contact by chord pipe rack 17, now, platform load is again by all output pinion 7 shareds, and namely each output pinion 7 together rotarily drives platform rising with output shaft.
When pile pulling operating mode, because output shaft rotates according to the direction that arrow in Fig. 3 is contrary, therefore, when certain output pinion 7 does not fully contact, other output pinion 7 can overload, the output pinion 7 of overload will extrude the second springing 3, second springing 3 is compressed further to stop output pinion 7 to be rotated further on the second output shaft 5, the result that output pinion 7 is rotated further can make whole output pinions 7 again fully contact with string pipe rack 17, thus reaches the object of synchronous pile pulling.
It should be noted that, when there is the situation of the asynchronous running of output pinion 7, the anglec of rotation of the output pinion 7 fully do not contacted with string pipe rack 17 is very little, and platform therefore can not be made to shake.
The gear rack lifting system that the utility model embodiment provides, when not changing the lifting principle of traditional jacking system, only innovation being optimized to reductor part, reducing productive costs, meanwhile, this gear rack lifting system is made to have good operability.
The foregoing is only this practical new preferred embodiment, in order to restriction, this is not newly practical, all within this practical new spirit and principle, any amendment done, equivalent replacements, improvement etc., all should be included in originally within practical new protection domain.
Claims (10)
1. a gear unit, comprise reductor and output pinion, described reductor comprises: midship mounting, output shaft and bearing, it is characterized in that, described output shaft comprises: the first output shaft, second output shaft and the 3rd output shaft, described output pinion to be set on described second output shaft and to be threaded with described second output shaft, one end of described first output shaft is stretched in described midship mounting, the other end of described first output shaft is connected with one end of described second output shaft, the other end of described second output shaft is connected with one end of described 3rd output shaft, described bearing is arranged on the other end of described 3rd output shaft, described one end of described first output shaft is provided with the shaft shoulder, described first output shaft is arranged with the first springing, the two ends of described first springing are against on the described shaft shoulder and described output pinion respectively, described 3rd output shaft is arranged with the second springing, on the lasso that the two ends of described second springing are against described bearing respectively and described output pinion.
2. gear unit according to claim 1, it is characterized in that, described first springing comprises: annular pressing plate, first elastomeric element, the first stay bearing plate being set in the sleeve outside described first elastomeric element and being set on described first output shaft and described second output shaft, described annular pressing plate to be set on described first output shaft and to be against on the described shaft shoulder, one end of described sleeve is arranged around the outer wall of described annular pressing plate, the other end of described sleeve is fixed on a side end face of described first stay bearing plate, and the length direction of described sleeve is identical with the axis direction of described first output shaft, the opposite side end face of described first stay bearing plate is against on described output pinion, the two ends of described first elastomeric element are against on described annular pressing plate and described first stay bearing plate respectively.
3. gear unit according to claim 2, is characterized in that, the size of the end face of the side that described first stay bearing plate contacts with described output pinion is less than the size of a relative side end face of described first stay bearing plate.
4. gear unit according to claim 2, it is characterized in that, the outside dimension of described second output shaft is equal with the outside dimension of described first output shaft, the internal diameter of described first stay bearing plate is provided with two annular inner race, two described annular inner race are arranged around described first output shaft and described second output shaft respectively, and the diameter around the annular inner race of described first output shaft is less than the diameter of annular inner race described in another.
5. gear unit according to claim 2, is characterized in that, described first elastomeric element comprises at least one first disc spring, and described first disc spring is set on described first output shaft.
6. gear unit according to claim 5, is characterized in that, the outside dimension of described first elastomeric element is identical with the outside dimension of described annular pressing plate.
7. gear unit according to claim 1, it is characterized in that, described second springing comprises: annular backing plate, the second elastomeric element and the second stay bearing plate, one side end face of described annular backing plate is against on described output pinion, one side end face of the second stay bearing plate is against on the lasso of described bearing, and the two ends of described second elastomeric element are against between described annular backing plate and described second stay bearing plate respectively.
8. gear unit according to claim 7, is characterized in that, described second elastomeric element comprises at least one second disc spring, and described second disc spring is set on described 3rd output shaft.
9. gear unit according to claim 1, is characterized in that, the outside dimension of described 3rd output shaft is less than the outside dimension of described second output shaft.
10. a gear rack lifting system, it is characterized in that, described gear rack lifting system comprise at least four gear units as described in any one of claim 1-9, leg-chord pipe, string pipe rack and with as described in the drive element that is in transmission connection of gear unit, described string pipe rack is fixed on described leg-chord pipe, described gear unit is arranged in the both sides of described string pipe rack, the output pinion of described gear unit engages with described string pipe rack, is arranged in the screw thread rotation direction opposed of two described output pinions of described string pipe rack both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062004.2U CN204607509U (en) | 2015-01-29 | 2015-01-29 | A kind of gear unit and gear rack lifting system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062004.2U CN204607509U (en) | 2015-01-29 | 2015-01-29 | A kind of gear unit and gear rack lifting system thereof |
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| Publication Number | Publication Date |
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| CN204607509U true CN204607509U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520062004.2U Expired - Fee Related CN204607509U (en) | 2015-01-29 | 2015-01-29 | A kind of gear unit and gear rack lifting system thereof |
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| Country | Link |
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| CN (1) | CN204607509U (en) |
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2015
- 2015-01-29 CN CN201520062004.2U patent/CN204607509U/en not_active Expired - Fee Related
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