CN208327218U - A kind of driving device and travelling jack - Google Patents
A kind of driving device and travelling jack Download PDFInfo
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- CN208327218U CN208327218U CN201820926219.8U CN201820926219U CN208327218U CN 208327218 U CN208327218 U CN 208327218U CN 201820926219 U CN201820926219 U CN 201820926219U CN 208327218 U CN208327218 U CN 208327218U
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- retarder
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- driving device
- reel
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Abstract
The utility model relates to lifting haulage equipment technical fields, specifically, it is related to a kind of driving device and travelling jack, the driving device includes retarder and motor, wherein the input shaft of retarder is equipped with plug-in opening, the shell of motor is fixed on the cabinet of retarder, in the motor shaft insertion plug-in opening of motor, when the motor rotates, motor can drive the input shaft of retarder to rotate synchronously.The driving device structure is more compact and simplified, small in size, light-weight, occupies little space.Above-mentioned driving device is installed on the travelling jack, for realizing the adjusting to wirerope extension elongation, eliminates and is waved because trolley shakes the suspender generated, enhance the stability of suspender, improve the anti-ability of shaking of tyre crane trolley.
Description
Technical field
It is small in particular to a kind of driving device and handling the utility model relates to lifting haulage equipment technical field
Vehicle.
Background technique
Crane refers to more movement hoisting machineries of vertical-lift in a certain range and horizontal carrying heavy goods, is also often claimed
For overhead traveling crane, hanging or crane.In port and pier, crane is a kind of most common carrying and stacking apparatus.For handling goods
Object usually can all have travelling jack on crane, be moved by travelling jack with suspender, and suspender grabs container, with
Container rises or movement, can be very good stacking and the carrying of realizing container.For example, tyre crane is exactly that port and pier are normal
A kind of crane seen, plays very important effect in the transport of harbour container and stacking.The superstructure of tyre crane
It is essentially identical with crawler crane, it is fitted with travelling jack.
Traditional travelling jack is mainly the height and state for relying on reel to adjust sling upper rack, and reel passes through rope belt
Dynamic sling upper rack movement, wirerope one end are fixed on reel, and the other end is fixed on trolley after bypassing the pulley on sling upper rack
On frame, reel realizes the adjusting to the height and state of sling upper rack by folding and unfolding wirerope.Although this regulative mode knot
Structure is simple, but since wirerope is flexible, during the work time, when shaking, wirerope can not be sponged because shaking
And what is generated waves, it is anti-that to shake effect poor.Thus, it is desirable to have a kind of regulating device to carry out small range to the extension elongation of wirerope
Adjusting, eliminate the situation that the part wirerope that occurs during shaking tenses, part wirerope loosens, enhance travelling jack
Anti- shake effect.Simultaneously as space is limited on trolley frame and has higher limitation requirement to weight, for wirerope
The regulating device that extension elongation carries out small-scale adjusting cannot be excessive or overweight.
Utility model content
The purpose of this utility model is to provide a kind of driving devices, to solve the above problems.
To achieve the goals above, the utility model provides a kind of driving device, including retarder, the input of retarder
Axis is equipped with plug-in opening；The shell of motor, motor is fixed on the cabinet of retarder, and the motor shaft of motor is inserted into plug-in opening
In, when the motor rotates, motor can drive the input shaft of retarder to rotate synchronously, wherein the reduction ratio of retarder is 1~140.
Optionally, the step of reduction of retarder is n grades, wherein n=1~4.
Optionally, n=2~4, the 1st grade of transmission of retarder are spur gear transmission, and i-stage transmission is helical teeth circle
Column gear transmission, wherein i=2~n.
Optionally, the shell of motor and the cabinet of retarder pass through flanged joint.
Optionally, retarder further includes output shaft, and the output end and motor of output shaft are located at opposite two of retarder
Side, the direction of side is successively arranged where n grades of transmission gears from side where motor towards the output end of output shaft.
Optionally, motor is equipped with brake, and brake is used for braking motor.
The utility model provides a kind of travelling jack, including trolley frame, the reel being arranged on trolley frame, sling upper rack
With the driving device of any of the above-described technical solution, driving device is set on trolley frame, and adjusting is arranged on the output shaft of retarder
Reel, retarder can drive adjusting spool turns, and sling upper rack is equipped with pulley, and sling upper rack passes through the traction rope around pulley
It is suspended in the lower section of trolley frame, wherein on reel, the other end of traction rope is wound the one ends wound of traction rope after bypassing pulley
On adjusting reel.
Optionally, the axis for adjusting reel is parallel with the axis of pulley.
As above, driving device provided by the utility model is by being rationally arranged the connection type of motor and retarder and subtracting
The reduction ratio of fast device reduces the volume of regulating device under the premise of meeting requirement, alleviates the weight of regulating device
Amount.
For the above content of the utility model can be clearer and more comprehensible, preferred embodiment and detailed in conjunction with attached drawing is cited below particularly
Explanation.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 diagrammatically illustrates the driving device external structure main view of the utility model；
Fig. 2 diagrammatically illustrates the driving device external structure right view of the utility model；
Fig. 3 diagrammatically illustrates the driving device A-A rotation Section View of the utility model；
The driving device that Fig. 4 diagrammatically illustrates the utility model is applied to the application structure figure on travelling jack；
The driving device that Fig. 5 diagrammatically illustrates the utility model is applied to the vertical view layout structure figure on travelling jack.
Wherein, the above drawings include the following reference numerals:
9, travelling jack；01, driving device；02, trolley frame；03, reel；04, sling upper rack；05, pulley；06, steel wire
Rope；07, reel is adjusted；1, retarder；10, cabinet；11, input shaft；110, plug-in opening；12, straight spur gear；13, helical teeth
Roller gear；14, transmission shaft；15, output shaft；2, flange；3, motor；30, shell；31, motor shaft；4, brake；B, pulley
Axis；C, the axis of reel is adjusted；D, the axis of reel；Y, the length direction of travelling jack；Z, the height side of travelling jack
To.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this theory
The bright revealed content of book understands other advantages and effect of the utility model easily.Although the description of the utility model will tie
It closes preferred embodiment to introduce together, but this feature for not representing this utility model is only limitted to the embodiment.On the contrary, knot
Closing the purpose that embodiment makees utility model introduction is to be possible to extend to cover the claim based on the utility model
Other selections or transformation out.In order to provide to the understanding of the depth of the utility model, be described below in will be comprising many specific
Details.The utility model can also be implemented without using these details.In addition, in order to avoid the weight of chaotic or fuzzy the utility model
Point, some details will be omitted in the de-scription.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Traditional travelling jack is mainly the height and state for relying on reel to adjust sling upper rack, and reel passes through rope belt
Dynamic sling upper rack movement, wirerope one end are fixed on reel, and the other end is fixed on trolley after bypassing the pulley on sling upper rack
On frame, reel realizes the adjusting to the height and state of sling upper rack by folding and unfolding wirerope.Although this regulative mode knot
Structure is simple, but since wirerope is flexible, during the work time, when shaking, wirerope can not be sponged because shaking
And what is generated waves, it is anti-that to shake effect poor.
It in the prior art, if will be by sponging the shaking for generating due to travelling jack shaking to the adjusting of wirerope
Pendulum needs to install driving device in one end that wirerope is fixed on trolley frame to adjust the extension elongation of wirerope.Due to
During the work time, travelling jack handling container, the pulling force born on wirerope it is very big.If using traditional equipment come
The extension elongation for adjusting wirerope is then needed to transmit very big torque between motor shaft and retarder, thus be needed very big
Shaft coupling realizes the connection between motor shaft and retarder, and then increases the volume and weight of regulating device.But due to
Space is limited on trolley frame and has higher limitation requirement to weight, cannot install large volume or heavy weight adjusting dress
It sets, it is therefore desirable to which a kind of novel driving device realizes the adjusting of wirerope extension elongation.
Referring to Fig. 3 and combining shown in Fig. 2, Fig. 1, the embodiments of the present invention provide a kind of driving device 01, including
The input shaft 11 of retarder 1, retarder 1 is equipped with plug-in opening 110；The shell 30 of motor 3, motor 3 is fixed at retarder 1
On cabinet 10, the motor shaft 31 of motor 3 is inserted into plug-in opening 110, and when motor 3 rotates, motor 3 can drive the defeated of retarder 1
Enter the synchronous rotation of axis 11, wherein the reduction ratio of retarder 1 is 1~140.
In the present embodiment, referring to shown in Fig. 3 and combination Fig. 4, Fig. 5, driving device 01 provided in this embodiment can be right
The extension elongation of wirerope 06 carries out small-scale adjusting, and the motor shaft 31 of motor 3 is inserted into inserting on the input shaft 11 of retarder 1
It fills in hole 110, meanwhile, the shell 30 of motor 3 is fixed on the cabinet 10 of retarder 1, and the electricity for connecting motor 3 is omitted
Shaft coupling, the motor mount for installing motor 3 of the input shaft 11 of arbor 31 and retarder 1, so that 01 knot of regulating device
Structure is simplified, volume becomes smaller, weight saving, compact layout, shortens the drive path of regulating device 01, improves regulating device
Response speed and degree of regulation, enhance coupling stiffness.When travelling jack 9 shakes during the work time, regulating device 01
The extension elongation of wirerope 06 can be adjusted, eliminate the waving for the generating due to shaking of travelling jack 9, enhance stabilization
Property, improve the anti-ability of shaking of travelling jack 9.
It referring to Fig. 3 and combines shown in Fig. 4, Fig. 5, the reduction ratio of the retarder 1 of the utility model is 1~140.In this implementation
In example, the reduction ratio of retarder 1 is 1~140, and it is the stepper motor of 1450r/min that motor 3, which selects rated speed, then retarder 1
Output shaft 11 on revolving speed be 10~1450r/min, different revolving speeds can be exported according to the retarder 1 of different reduction ratio,
The wider range for exporting revolving speed, the range for being applicable in adjusting is also wider, can provide biggish torque, realizes and stretches out to wirerope 06
The adjusting of length.
Specifically, referring to Fig. 3 and combine Fig. 4, Fig. 5 shown in, during the work time, 9 handling of travelling jack container,
Pulling force on wirerope 06 is very big, needs retarder 1 to pass out very big torque and is just able to achieve adjusting to wirerope 06,
In, the calculation formula of torque: T=9550*P/n, in formula: P- power, kW；N- revolving speed, r/min；T- torque, Nm.It is possible thereby to
Find out, in the case where 3 power of motor is certain, torque and revolving speed are inversely proportional.In the present embodiment, driving device 01 is to steel wire
06 extension elongation of restricting carries out small-scale adjusting, does not need to export biggish revolving speed on the output shaft 11 of retarder 1, and needs defeated
Biggish torque out.In the present embodiment, the reduction ratio of retarder 1 is 1~140, and it is 1450r/ that motor 3, which selects rated speed,
The stepper motor of min.It therefore deduces that, the revolving speed on the output shaft 11 of retarder 1 is 10~1450r/min, is not only applicable in
Wider range of adjusting, and biggish torque and faster adjustment speed can be provided, it realizes to 06 extension elongation of wirerope
Reliable and quick adjusting.
Shown in Figure 3, in the present invention, the step of reduction of retarder 1 is n grades, wherein n=1~4.In this reality
It applies in example, the step of reduction of retarder 1 is 1~4 grade, not only compact-sized, high transmission accuracy, good economy performance, moreover, transmission effect
Rate is high, and light weight is small in size, can meet well the technical program to structurally and functionally the needs of.
In theory, it referring to Fig. 3 and combines shown in Fig. 4, Fig. 5, the reduction ratio of retarder 1 i.e. retarder 1
Resultant gear ratio, the distribution of transmission ratio is distributed according to the principle of " pre-small post-large ", that is, each from high speed grade to slow speed turbine stage
Stage gear ratio is always increased step by step, but from structure, transmission accuracy and economy etc. consider, transmission ratio should not distribute compared with
It is more.In general, when reduction ratio is 6~20, the step of reduction of retarder 1 is second level, the retarder when reduction ratio is 20~90
1 step of reduction is three-level, and when reduction ratio is 90~59, the step of reduction of retarder 1 is level Four.Deceleration in the present embodiment
Than being 1~140, the step of reduction of retarder 1 is 1~4 grade, can not only meet theoretic requirement well, meanwhile, also can
It is limited and have higher limitation to require weight to meet space on trolley frame 02 well.
In the present embodiment, shown in Figure 3, the reduction ratio of retarder 1 is 1~140, so the retarding stage of retarder 1
Number n=1~4.Work as n=1, retarder 1 is primary transmission, and the input shaft 11 of retarder 1 is transferred power to by reduction gearing
On the output shaft 15 of retarder 1, transmission efficiency is high.
With continued reference to shown in Fig. 3, in the present invention, as n=2~4, the 1st grade of transmission of retarder 1 is straight-tooth circle
Stud wheel 12 is driven, and i-stage transmission is that helical gears 13 are driven, wherein i=2~n.In the present embodiment, retarder 1
Interior deceleration transmission process is realized by gear drive.Gear drive more accurate, high-efficient, compact-sized, work with transmission ratio
Make advantage reliable, that the service life is long.In gear drive, straight spur gear 12 is most common gear in actual production and use
One of, have it is easy to make, convenient for design, advantage at low cost, be widely used in all kinds of retarders and transmission device.Helical teeth
Roller gear 13 has the advantages such as gear teeth meshing registration height, stable drive, noise be small, and transmission capacity is than straight spur gear 12
By force.Therefore, in the present embodiment, straight spur gear 12, processing and fabricating of being more convenient for are selected in the 1st grade of transmission.In addition to the 1st grade of transmission
Transmissions at different levels select helical gears 13, gear teeth meshing registration height, stable drive, noise are small, can be very good full
Structure and performance requirement in sufficient the technical program.
Specifically, shown in Figure 3, in the present embodiment, as n=2, i=2, retarder 1 is secondary transmission,
In, the 1st grade of transmission is that straight spur gear 12 is driven, and the 2nd grade of transmission is that helical gears 13 are driven.As n=3, i=2,
3, retarder 1 is three-level transmission, wherein the 1st grade of transmission is that straight spur gear 12 is driven, and the 2nd grade of transmission and 3rd level transmission are equal
For the transmission of helical gears 13.As n=4, i=2,3,4, retarder 1 are level Four transmission, wherein the 1st grade of transmission is straight-tooth
Roller gear 12 is driven, and the 2nd grade of transmission, 3rd level transmission and the 4th grade of transmission are that helical gears 13 are driven.But in order to
The volume and weight of retarder 1 is avoided to become larger, the step of reduction of retarder 1 should not be too large.In this embodiment, it is preferred that subtracting
The step of reduction of fast device 1 is three-level transmission.
Shown in Figure 3 in the utility model, the shell 30 of motor 3 is connect with the cabinet 10 of retarder 1 by flange 2.
In the present embodiment, the shell 30 of motor 3 is connect by bolt with flange 2, and flange 2 is installed on the case of retarder 1 by bolt
On body 10.This mounting means not only ensure that the reliable installation of motor 3, while also eliminate motor mount, so that driving
The structure of device 01 is more compact, alleviates the weight of driving device 01.
In the utility model, referring to Fig. 3 and as shown in Figure 1, Figure 2, retarder 1 further includes output shaft 15, output shaft 15
Output end and motor 3 be located at the opposite two sides of retarder 1, n grades of transmission gears are from 3 place side of motor towards exporting
The direction of side is successively arranged where the output end of axis 15.In the present embodiment, the output shaft 15 of retarder 1 and motor 3 are distinguished
It is arranged on the left side and right side of retarder 1, the right end of input shaft 11 is directly inserted with the motor shaft 30 of motor 3 and is connected,
The direction of transmission gear from the top down, from right to left in retarder 1 is successively arranged, so that each gear dislocation arrangement, is being protected
In the case where card transmission, the inner space of the cabinet 10 of retarder 1 is taken full advantage of, the volume and weight of retarder 1 is reduced,
So that the structure of retarder 1 more optimizes.
With continued reference to Fig. 3 and as shown in Figure 1, Figure 2, in the utility model, motor 3 is equipped with brake 4, brake 4
For braking motor 3.Brake 4 in the present embodiment can be built in the shell 30 of motor 3, can also pacify by the way that connector is fixed
Loaded on motor 3, as long as can guarantee to 3 effective brake of motor.
Referring to Fig. 3 and combining shown in Fig. 4, Fig. 5, the utility model provides a kind of travelling jack 9, including trolley frame 02,
Driving device 01 in reel 03 on trolley frame 02, sling upper rack 04 and above-mentioned technical proposal is set, and driving device 01 is set
Reel 07 is adjusted in being arranged on trolley frame 02 on the output shaft 15 of retarder 1, retarder 1, which can drive, adjusts the rotation of reel 07,
Sling upper rack 04 is equipped with pulley 05, and sling upper rack 04 is suspended in the lower section of trolley frame 02 by the traction rope around pulley 05,
Wherein, on reel 03, the other end of traction rope is wrapped on adjusting reel 07 one ends wound of traction rope after bypassing pulley 05.
In the present embodiment, traction rope is wirerope 06, and reel 03 is set to leaning on for trolley frame 02 along the length direction Y of travelling jack 9
The position of two close end, reel 03 are equipped with wirerope 06, one end of wirerope 06 is fixed set in reel 03, wirerope 06 it is another
One end along under the short transverse Z-direction of travelling jack 9 around being wrapped in adjusting obliquely after setting the pulley 05 with sling upper rack 04
On reel 07.In the present embodiment, the output shaft 15 of retarder 1 is equipped with and adjusts reel 07, driving device in driving device 01
01 quantity is four, and four driving devices 01 are symmetrically set on trolley frame 02, the number of the wirerope 06 stretched out from reel 03
The quantity for the pulley 05 being arranged in amount, sling upper rack 04 is identical as the quantity of driving device 01.
It with continued reference to Fig. 3 and combines shown in Fig. 4, Fig. 5, during the work time, when travelling jack 9 shakes, can make
The stress for obtaining the wirerope 06 of each stretching changes, and some wirerope 06 loosen, and some wirerope 06 tense, while can also
Sling upper rack 04 is caused to rock.In the present embodiment, in the driving device 01 of every steel cable 06 corresponding thereto
Adjusting reel 07 connect, when shaking, the motor 3 of driving device 01 is rotated, and is transferred power to by motor shaft 31
On the input shaft 11 of retarder 1, the input shaft 11 of retarder 1 is transferred power on the transmission gear in retarder 1, and passes through
Output shaft 15, which transfers power to, to be adjusted on reel 07, is adjusted reel 07 and is rotated, the extension elongation of wirerope 06 is adjusted,
So that the wirerope 06 loosened and the wirerope 06 tensed restore to the equilibrium state shaken before occurring, prevent sling upper rack 04 from sending out
It is raw to shake, enhance the stability of sling upper rack 04, improves the anti-ability of shaking of travelling jack 9.
In the present invention, shown in Figure 5, the axis C for adjusting reel 07 is parallel with the axis B of pulley 05.At this
In embodiment, for the ease of adjusting reel 07 and reel 03 to the tightening of wirerope 06 and loosening, adjusted so that adjusting reel 07
It is more accurate, it is desirable that the axis C for adjusting reel 07 is parallel with the axis B of pulley 05.It may insure wirerope 06 in space in this way
It is upper to be mutually perpendicular to axis C that is adjusting reel 07, it is rolled up so that adjusting the distance that reel 07 rotates and being equal to perpendicular to adjusting
To the folding and unfolding distance of wirerope 06 on the direction of the axis C of cylinder 07, adjust more accurate.In addition, when adjust reel 07 axis C with
When the axis D of reel 03 is coplanar in the vertical direction, the wirerope 06 stretched out can be made and adjust the axis C and reel of reel 07
03 axis D almost locate to be unfavorable for so in the same plane to adjust reel 07 and reel 03 to the tightening of wirerope 06 and
Loosen.Therefore, the axis C for adjusting reel 07 is not coplanar in the vertical direction with the axis D of reel 03.
As above, it is applied to the technical solution of the utility model, referring to Fig. 3 and as shown in Figure 1, Figure 2, the utility model mentions
The driving device 01 of confession is by the way that the motor shaft 31 of motor 3 and the input shaft 11 of retarder 1 to be directly connected to, and passing through flange 2 will
Motor 3 is mounted on the cabinet 10 of retarder 1, so that 01 structure of driving device is more compact, simplifies the knot of regulating device 01
Structure reduces the volume of regulating device 01, alleviates the weight of regulating device 01, occupies little space, easy to use.
Generally speaking, referring to Fig. 5 and as shown in connection with fig. 4, driving device 01 provided by the utility model simplifies adjusting dress
The structure for setting 01 reduces the volume of regulating device 01, alleviates the weight of regulating device 01, allow driving device 01 very
The requirement on trolley frame 02 to space and weight is met well.Meanwhile a kind of travelling jack 9 that the utility model also provides,
Regulating device 01 is installed on the trolley frame 02 of travelling jack 9, may be implemented effective adjusting to wirerope 06, so eliminate because
Travelling jack 9 shakes the sling upper rack 04 generated and waves, and enhances the stability of sling upper rack 04, improves travelling jack 9
It is anti-to shake ability.
In conclusion the principles of the present invention and its function is only illustrated in above-described embodiment provided by the utility model
Effect, rather than limits the present invention.Any person skilled in the art all can without prejudice to the utility model spirit and
Under the scope of, it carries out modifications and changes to above-described embodiment.Therefore, those of ordinary skill in the art is not taking off such as
All equivalent modifications or change completed under spirit revealed from the utility model and technical idea, should be practical new by this
The claim of type is covered.
Claims (8)
1. a kind of driving device characterized by comprising
The input shaft of retarder, the retarder is equipped with plug-in opening；
Motor, the shell of the motor are fixed on the cabinet of the retarder, and the motor shaft insertion of the motor is described to insert
It fills in hole, when motor rotation, the motor can drive the input shaft of the retarder to rotate synchronously,
Wherein, the reduction ratio of the retarder is 1~140.
2. driving device as described in claim 1, which is characterized in that the step of reduction of the retarder is n grades, wherein n=
1~4.
3. driving device as claimed in claim 2, which is characterized in that the 1st grade of transmission of n=2~4, the retarder is straight
Tooth column gear transmission, i-stage transmission are cylindrical helical gear drive, wherein i=2~n.
4. driving device as described in claim 1, which is characterized in that the cabinet of the shell of the motor and the retarder is logical
Cross flanged joint.
5. driving device as claimed in claim 3, which is characterized in that the retarder further includes output shaft, the output shaft
Output end and the motor be located at the opposite two sides of the retarder, side where n grades of transmission gears from the motor
It successively arranges facing towards the direction of side where the output end of the output shaft.
6. driving device as described in claim 1, which is characterized in that the motor is equipped with brake, and the brake is used
In the braking motor.
7. a kind of travelling jack, which is characterized in that including；
Trolley frame；
Reel is arranged on the trolley frame；
Driving device described in any one of claims 1-6, the driving device are set on the trolley frame, the retarder
Adjusting reel is arranged on output shaft, the retarder can drive the adjusting spool turns；
Sling upper rack, the sling upper rack are equipped with pulley, and the sling upper rack around the traction rope of the pulley by suspending in midair
In the lower section of the trolley frame；
Wherein, on the reel, the other end of the traction rope twines the one ends wound of the traction rope after bypassing the pulley
It is wound on the adjusting reel.
8. travelling jack as claimed in claim 7, which is characterized in that the axis of the axis for adjusting reel and the pulley
In parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926219.8U CN208327218U (en) | 2018-06-14 | 2018-06-14 | A kind of driving device and travelling jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926219.8U CN208327218U (en) | 2018-06-14 | 2018-06-14 | A kind of driving device and travelling jack |
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| Publication Number | Publication Date |
|---|---|
| CN208327218U true CN208327218U (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820926219.8U Active CN208327218U (en) | 2018-06-14 | 2018-06-14 | A kind of driving device and travelling jack |
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| CN (1) | CN208327218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108466954A (en) * | 2018-06-14 | 2018-08-31 | 上海振华重工(集团)股份有限公司 | A kind of driving device and travelling jack |
-
2018
- 2018-06-14 CN CN201820926219.8U patent/CN208327218U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108466954A (en) * | 2018-06-14 | 2018-08-31 | 上海振华重工(集团)股份有限公司 | A kind of driving device and travelling jack |
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