CN106364852A - A loose material conveying device - Google Patents
A loose material conveying device Download PDFInfo
- Publication number
- CN106364852A CN106364852A CN201610851415.9A CN201610851415A CN106364852A CN 106364852 A CN106364852 A CN 106364852A CN 201610851415 A CN201610851415 A CN 201610851415A CN 106364852 A CN106364852 A CN 106364852A
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- Prior art keywords
- bulk material
- gear
- material conveying
- transmission
- conveying equipment
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/24—Gearing between driving motor and belt- or chain-engaging elements
- B65G23/30—Variable-speed gearing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Retarders (AREA)
Abstract
The invention relates to a loose material conveying device (1). The device is provided with a belt-shaped, chain-shaped or round conveying apparatus (4) used for loading or conveying a loose material and running in a surrounding manner, and at least one driving unit (2). The at least one driving unit is provided with at least one electric-driven driving motor (5, 51, 52) and a speed variator (6) equipped with at least one speed variator input shaft (7, 71, 72) and speed variator output shaft (8), wherein the at least one speed variator input shaft (7, 71, 72) is connected to at least one driving motor (5, 51, 52), and the at least one speed variator output shaft (8) is connected to at least one driving apparatus (3) used for the conveying apparatus (4). The loose material conveying device (1) is characterized in that the speed variator (6) at least comprises two switchable mechanical gears.
Description
Technical field
The present invention relates to a kind of bulk material conveying equipment, it has: for loading or transporting the cincture fortune of bulk material
The conveyer device of banding, chain or circle of row and at least one driving means, at least one driving means has at least one
Motorized motions motor and the speed change gear being furnished with least one transmission input shaft and transmission output shaft, wherein, at least one
Transmission input shaft is connected with least one motor, and at least one transmission output shaft is used for conveyer device with least one
Driving means connect.
Background technology
This bulk material conveying equipment refers in particular to Belt Conveying equipment, such as in mining industry and mine field mine coal or
The equipment being used during similar mineral products.Typically, when setting up mining area, first pass through corresponding bulk material conveyer device and open
Enter landline.Typically using so-called development machine, this development machine carries much less than the later machine using
Bulk material weight.But the bulk material conveying equipment typically, exporting the bulk material that these dig down is necessary
In view of production from now on.Therefore, this bulk material conveying equipment must transport in about year and be considerably less than
The material of itself design.Reason is, this conveying equipment in bulk material carries out non-full load running and is particularly propping up
Higher abrasion is brought in support roller region.Therefore, it is intended that being reached every by making bulk material conveying equipment accordingly more slowly run
In the individual unit interval, load is corresponding improves, even if so that also can be in bulk material conveying equipment under such special service condition
Same or analogous load within each unit interval is realized in region.In actual applications, this typically results in and is arranged on driving electricity
Gearbox unit between machine and conveying equipment was correspondingly changed after the so-called exploitation time, on the one hand to realize " opening
Send out gear ratio ", on the other hand after changing gearbox unit, realize operation gear ratio.
Another problem is, when equally occurring for the problem of these increased wear, is special running status, example
As operation of wriggling, personnel's transport, single good transport or analogue.Additionally, when conveying heap in bulk material conveying equipment
Long-pending density has during the different bulk material of very big difference it is also possible to run this abrasion of appearance due to underloaded.This can
With e.g. conveying coal and iron mine.If bulk material conveying equipment is directed to 100% iron mine design parameter and power, then for
The situation of conveying coal, then equipment and severe load deficiency.
Problem in such a device is, typically cannot realize or only pass through the control of at least one motorized motions motor
Run by the speed that power electric device is realized reducing with the conveyer device in bulk material conveying equipment or improving.But it is logical
The operation crossing the corresponding coupling of this converter and power of motor typically has the efficiency of relative mistake so as to must pull against at a distance of this
The great power loss of body design point.Need after reaching certain numerical value in the exclusion of power electric device region internal power loss
Carry out active cooling, the exclusion basis of this power loss is provided with the ground of at least one driving means of bulk material conveying equipment
Point, partly causes cost very high and complicated, and this makes equipment be susceptible to fault and very expensive.
Content of the invention
The technical problem to be solved is, it is to avoid these shortcomings simultaneously provide a kind of operation can with improvement
The bulk material conveying equipment of state (particularly under special running status).
According to invention, this technical problem is resolved by a kind of bulk material conveying equipment.By the present invention, variator
Device at least includes two switchable mechanical transmission gears.
Bulk material conveying equipment according to invention specifies, speed change gear only has rigid speed change unlike the past
Than, but include at least two switchable mechanical speed change gears.Thus, without going through converter at least one electronic drive
In the case of galvanic electricity machine generation effect, first grade and the second gear ratio therefore defeated in variator can be adjusted in speed change gear
First and second rotating speeds are adjusted on shaft.Therefore, conveying equipment is moved with friction speed according to drive range.This situation is special
It is that First Speed or the first rotating speed are second speed or the half of rotating speed.This is in mining industry or mine using having high effect
Rate, although to make bulk material conveying equipment remain to it in the case of conveying lower weight in the so-called exploitation time
Uniform load is realized in the load point of design.So, just can simply be cut according to the bulk material conveying equipment of the present invention
It is changed to another rotating speed, thus maintenance work that need not be expensive.Run for for example wriggling or bulk material conveying equipment does not have pine
The situation that scattered material runs, due to the less speed realized by converter, can be less than power loss of the prior art
Favourable operation is realized, because for example in the example finally referring to, only needing the half of mitigation power in the case of much.
Especially it is possible to thus simplifying converter cooling or particularly can completely left out for example cooling down, this for example uses in down-hole
When show great advantage.Situation in the bulk material conveying equipment of the bulk material design for different stacking densities
In, can for example be directed to first and carry out standard design, especially for above mentioned iron mine compared with low velocity.If conveying is
Coal, can accordingly improve speed, so so that the load of holding bulk material conveying equipment is constant.In identical mass flow
Higher volume flow can be produced by feed speed faster and therefore overcome the technical problem of the present invention.Additionally, it is defeated
Sending and can carry out quickly, to load quickly to the ship being for example used for transporting bulk material needs, being derived from addition
Advantage.
It can be stated that becoming quick-mounting in a very simple design of the bulk material conveying equipment according to invention
Put and there are at least four spur gears coupling in pairs, wherein, these spur-gearings can mutually relatively movably design, and makes speed change
Device has the first gear ratio first position, has the second gear ratio second position.Such have two in pairs
The gear of the spur-gearing coupling is extremely simple.This two spur gears coupling in pairs are designed to move, for example, pass through handss
Handle moves manually.Therefore when bulk material conveying equipment is static, spur-gearing can be mutually shifted, thus carrying out corresponding
Switching.As long as handoff procedure does not need excessively frequently, this can be very efficient.In most of bulk material conveying equipments
It is strictly this situation, because general only just need less rotating speed in the exploitation time, then may monthly carry out about
Once corresponding test run or correction operation, personnel's transport or the material conveying for such as explosion or the material being similar to.
In another particularly advantageous design of the bulk material conveying equipment according to invention, as an alternative
It can be stated that speed change gear has two planetary transmissions coupling, two planetary transmissions of person can switch, and so that variator is existed
First switching position realizes the first gear ratio, realizes the second gear ratio in second switching position.This band two couple row
The structure of star variator is somewhat more expensive with four structures coupling spur gear in pairs than described above.But, it has
Such advantage, the switching between the first gear ratio and the second gear ratio not only can be quiet at least one motorized motions motor
Carry out when only, and can carry out in running.For this reason, it is permissible similar to the automatic transmission design in vehicle
Regulation, provides corresponding brake unit, this brake unit can be braked or discharge and be coupled in the region couple planetary transmission
The discrete component of planetary transmission, to realize the switching between speed ratio.
On the contrary, another form of implementation substituting of the bulk material conveying equipment according to invention is it can be stated that become quick-mounting
Put with planetary transmission, wherein, the first element of planetary transmission at least indirectly with the first motorized motions motor connection, planet
Second element of variator is at least connected with the second motorized motions motor and switchable brake unit indirectly, and wherein, OK
The third element of star variator is at least connected with conveyer device indirectly.This special according to the bulk material conveying equipment invented
Beneficial and favourable design has unique planetary transmission to be sufficient for, and can apply nominal operation respectively using two in addition
The motorized motions motor of the half-power needed for state.If run with the rotating speed of half, then one of motor can
So that conveying equipment is driven by the first element of planetary transmission and third element.Second element is by switchable brake unit
Brake, the second motor does not rerun.If necessary to full rotating speed, then by two motors and in brake unit
Not only drive the first element of planetary transmission in the case of unclamping but also drive the second element, be accordingly adjusted in third element
Double rotating speed, power distribution is on two motorized motions motors.Planetary transmission is used as superposition variator.It has such excellent
Point, each motorized motions motor is ideally mated with power demand and rotating speed and therefore can realize efficiently running very much.Excellent
The second element here is selected to be connected with the second motor and switchable brake unit by spur gear level, wherein, the first driving
Motor ideally has the direction of rotation contrary with the second motor.
Brief description
Another favourable design of bulk material conveying equipment according to invention is in other related appurtenances
Be given in requirement, further illustrated below in reference to diagram according to embodiment.In the accompanying drawings:
Fig. 1 is the schematic diagram of the bulk material conveying equipment according to invention；
Fig. 2 is first embodiment party positioned at the speed change gear of first position for the bulk material conveying equipment according to invention
Formula；
Fig. 3 is first embodiment party positioned at the speed change gear of second position for the bulk material conveying equipment according to invention
Formula；
Fig. 4 is the alternate embodiments of speed change gear details；
Fig. 5 is another alternate embodiments of a part for speed change gear and bulk material conveying equipment.
Specific embodiment
In the illustration of FIG. 1, show the diagram of the very simplification of bulk material conveying equipment 1.Bulk material conveying sets
Standby 1 has at least one driving equipment 2, and by this driving equipment 2 driver 3, the conduct being for example shown in broken lines is defeated
Send the driving wheel of the belt conveyor of device 4.Driving equipment 2 here includes at least one motorized motions motor 5 and speed change gear
6, this speed change gear 6 is only schematically illustrated in the illustration of FIG. 1.Motorized motions motor 5 and the input of speed change gear 6
Axle 7 connects, and driving means 3 are correspondingly connected with the output shaft 8 of speed change gear 6.As seeing in the schematic diagram of Fig. 1
As, transmission input shaft 7 and transmission output shaft 8 here are arranged mutual vertically, and this passes through can see further after a while
The corresponding construction of the variator going out is realized.
Now, it is shown specifically the first possible form of implementation of speed change gear 6 in the diagram of Fig. 2 again.In variator
Followed directly by a fluid coupling 9, this fluid coupling 9 is also referred to as turbine bonder to input shaft 7.As in Fig. 2
Used in diagram embodiment like that, fluid coupling 9 constitutes so-called two-chamber fluid coupling.Two-chamber fluid coupling is with this
Form known to body and mode have two working chambers and can in the case of external diameter identical compared with single-chamber fluid coupling
To transmit double power.It is connected with fluid coupling 9, on direction of energy flow, followed by antitorque with the side of fluid coupling 9
The clutch spindle connecting and the transmission main shaft 11 of extension in parallel.Transmission main shaft 11 is with bevel gear 12 even
Connect, this bevel gear 12 is engaged with second bevel gear 13 and thereby ensure that the vertical cloth of transmission input shaft 7 and transmission output shaft 8
Put, transmission output shaft 8 is connected with second bevel gear 13 by commutating tooth wheel speed 14.
Four spur gears 15,16,17,18 constitute the core of the speed change gear 6 shown in Fig. 2, and this four spur gears are respectively
It is connected with each other in couples respectively with 15,17 and 16,18.As can see in fig. 2, it is arranged in clutch spindle
Spur gear 15 on 10 is engaged with the spur gear 16 being arranged on transmission main shaft 11, and spur gear 17 and 18 no engagingly revolves
Turn.Two spur gears 16,18 intercouple by movable teeth set 19 realization, this movable teeth set 19 with transmission main shaft 11 and
Spur gear 16,18 antitorque connections, two spur gears 16,18 are connected with each other.Movable teeth set 19 passes through control bar 20 and two commutating tooths
Wheel 16,18 occurs accordingly to move.Figure 2 illustrates spur gear 15,16 intermeshing first position, wherein, for example, exist
When motorized motions motor 5 input speed is 1500r/min, the rotating speed of 1000r/min is realized on transmission main shaft 2.Pass through
The other elements of speed change gear 6, lead to realize the rotating speed of 60r/min on transmission output shaft 8.In bulk material conveying equipment
Movable teeth set 19 is correspondingly moved in 1 operation that can be manipulated by now bar 20 when static, thus makes two spur gears 17,
18 engage each other and so that spur gear 15,16 is disengaged.This can see in Fig. 3 diagram that other contents are consistent with Fig. 2, because
This, eliminate most of reference, in addition to the labelling of the movable teeth set in Fig. 3 and the spur gear of control bar.In figure 3
The switching position illustrating, spur gear 17, the gear ratio between 18 is so that the input speed on transmission input shaft 7 is identical
When, only there is in the region of transmission main shaft 11 rotating speed of 500r/min.Corresponding to this, on transmission output shaft 8
The rotating speed of 30r/min be movable teeth set or with the rotating speed in the movable teeth spur gear 16,18 that is connected of set in fig. 2 shown position
Half.
The replacement form of implementation in gear arrangement 6 section can be seen in the diagram.Here can see clutch spindle
10 and transmission main shaft 11, this two transmission shafts are arranged in this form of implementation mutually in alignmently.Certainly, it
Can also be staggeredly arranged by spur gear level is parallel.This does not affect on the shown here region of gear arrangement 6.
The dependent cross-section of gear arrangement 6 has two mutually between clutch spindle 10 and transmission main shaft 11
The planetary transmission 21,22 of coupling.This two planetary transmission 21,22 is mutually torsionally connected simultaneously with its sun gear 23,24
Torsionally it is connected with clutch spindle 10.Clutch spindle 10 is again directly or through variator level and fluid coupling 9
Driven by Vidacare corp 5.Pass through bevel gear 12 to the power output of transmission main shaft 11 with from transmission main shaft 11,
13 and commutating tooth wheel speed 14 arrive transmission output shaft 8 power output by each planetary transmission 21,22 be used for planetary gear
26,27 common planet carrier 25 is realized.Planetary transmission 21,22 hollow wheel or external gear 28,29 are respectively provided with a system
Dynamic device 30,31.By these brakes 30,31, hollow wheel 29,28 purposefully brake, so that in first speed change level, one
Hollow wheel, such as hollow wheel 29 rotate freely under conditions of brake 31 is unclamped, and another hollow wheel 28 is in brake 30
Brake under conditions of tension.If gear ratio correspondingly converts, hollow wheel 29 is braked by brake 31, meanwhile, empty
Heart wheel 28 is discharged by brake 30.Then, formed between clutch spindle 10 and transmission main shaft 11 desired
Gear ratio changes.
When brake 30,31 is for example designed as around the band brake design running, then, certain by brake
Thermic load, even if in running, it is also possible to realize hollow wheel 28,29 particularly in the running of fractional load
Braking and release, contrast with the form of implementation of Fig. 2 and Fig. 3, brake completely without bulk material conveying equipment 1 during gear shift.
Another possible form of implementation of speed change gear 6 relevant details can be seen in Figure 5.In Fig. 5 diagram only
The structure of partially visible speed change gear 6 input side is designed to so that variator the first input shaft 71 and the first motorized motions are electric
Machine 51 connects, and variator the second input shaft 72 is connected with the second motorized motions motor 52.It is close to each transmission input shaft 71,
72 is the fluid coupling 91,92 that two idealized models design for single-chamber, because as also will illustrate below, by this
Fluid coupling 91,92 only need to transmit the power of conventional structure half respectively.
First clutch spindle 101 is connected on the first fluid coupling 91, the second fluid coupling 92 connects
Then the second clutch spindle 102.After the only one planetary transmission 32 driving as superposition variator, by row
Carrier 33 realizes coupling of transmission main shaft 11 and the planetary gear 34 of planetary transmission 32.The sun gear of planetary transmission 32
35 are torsionally connected with the first clutch spindle 101.For the feelings that will run in less gear ratio and corresponding smaller power
Condition, then enough to drive the first motorized motions motor 51 and by planetary transmission 32 in clutch spindle 101 and speed change
Corresponding gear ratio is realized between device the second axle 11.For this purpose, the planetary transmission 32 in the embodiment being shown in which
Hollow wheel 36 be connected with the second clutch spindle 102 by spur gear level 37, this spur gear level 37 can be filled by braking
Put 38 corresponding brake, this brake unit 38 is merely shown as brake disc in Figure 5.The hollow wheel 36 of planetary transmission 32 is not revolved
Turn, thus realizing the gear ratio in sun gear 35 and therefore defining between clutch spindle 101 and transmission main shaft 11.This
The gear ratio of individual definition is designed to so that it is the half of second possible gear ratio in terms of its rotating speed, and this is later also
Elaboration can be made, the therefore first motor 51 (and fluid coupling 91) is sufficient for according to the design of the rated power of half.
If realizing full rotating speed in transmission main shaft 11 region, the second clutch spindle 102 passes through brake unit
38 releases, are driven by the second motor 52 and the second fluid coupling 92.Therefore, on the one hand drive planetary transmission 32
Sun gear 35, on the other hand drives the hollow wheel 36 of planetary transmission 32.Planetary transmission as superposition transmission duty and
The power of input is passed to transmission main shaft 11 by planet carrier 33, so that not only with institute's phase on transmission main shaft 11
The form hoped and mode form higher rotating speed, and the power that will be applied by the first motor 51 and the second motor 52
Phase adduction, therefore in the case of the design that two motorized motions motors 51,52 are accordingly reduced, still enables all
Rated power.Here, because spur gear level 37 is reasonably, the second motorized motions motor 51 with the first motorized motions motor
51 contrary direction of rotation operatings, only to ensure that corresponding performance with only one spur gear level 37.
Claims (13)
1. a kind of bulk material conveying equipment (1), it has following devices:
1.1 are used for loading or transporting the conveyer device (4) around the banding, chain or circle run of bulk material
1.2 at least one there are the driving means (2) of following devices:
1.2.1 at least one motorized motions motor (5,51,52) and
1.2.2 it is furnished with the speed change gear (6) of at least one transmission input shaft (7,71,72) and transmission output shaft (8), its
In, described at least one transmission input shaft (7,71,72) and at least one motor (5,51,52) connect, described at least
One transmission output shaft (8) is connected for the driving means (3) of conveyer device (4) with least one,
It is characterized in that:
1.2.3 described gear arrangement (6) at least includes two switchable mechanical transmission gears.
2. bulk material conveying equipment (1) according to claim 1, is characterized in that, described at least one transmission input shaft (7,
71,72) arrange perpendicular to described transmission output shaft (8).
3. bulk material conveying equipment (1) according to claim 2, is characterized in that, described speed change gear (6) and described at least
There is between one transmission input shaft (7,71,72) and described transmission output shaft (8) cone of two orthogonal rotations
Gear (12,13).
4. the bulk material conveying equipment (1) according to claim 1,2 or 3, is characterized in that, described speed change gear (6) have to
A few fluid coupling (9,91,92).
5. the bulk material conveying equipment (1) according to Claims 1-4 one of which, is characterized in that, described speed change gear (6)
There are at least four spur gears coupling in pairs (15,16,17,18), wherein, the structure energy mutually relative movement of gear mesh, make
Obtain described speed change gear (6) and in first position of described gear mesh, there is the first gear ratio, in second position of gear mesh
There is the second gear ratio.
6. bulk material conveying equipment (1) according to claim 5, is characterized in that, the structure of described gear mesh is at least one
When individual motorized motions motor (5,51,52) is static, second position manually can be moved to from first position by control bar (20)
Put.
7. the bulk material conveying equipment (1) according to Claims 1-4 one of which, is characterized in that, described speed change gear (6)
There are two planetary transmissions coupling (21,22), described two planetary transmissions (21,22) coupling can switch to, and makes institute
State variator and realize the first gear ratio in first switching position, realize the second gear ratio in second switching position.
8. bulk material conveying equipment (1) according to claim 7, is characterized in that, two planetary transmissions (21,22) are torsionally
It is connected on its sun gear (23,24) and its planet carrier (25), wherein, described sun gear (23,24) and described planet carrier (25)
Side at least indirectly with least one transmission input shaft (7,71,72) connect, opposite side indirectly with described speed change
Device output shaft (8) connects, and the hollow wheel (28,29) of two described planetary transmissions (21,22) passes through a brake respectively
(30,31) are individually braked or are discharged.
9. the bulk material conveying equipment (1) according to Claims 1-4 one of which, is characterized in that, described speed change gear (6)
There is planetary transmission (32), wherein, first element (35) of described planetary transmission (32) at least indirectly with the first electronic drive
Galvanic electricity machine (51) connects, second element (36) of described planetary transmission (32) at least indirectly with the second motorized motions motor (52)
Connect with switchable brake unit (38), and wherein, the third element (33) of described planetary transmission (32) is at least indirect
It is connected with described conveyer device (3).
10. bulk material conveying equipment (1) according to claim 9, is characterized in that, each motor (51,52) passes through each
From an input shaft (71,72) be connected with speed change gear (6) by respective fluid coupling (91,92).
11. bulk material conveying equipments (1) according to claim 9 or 10, is characterized in that, the of described planetary transmission (32)
One element is sun gear (35), and the second element of described planetary transmission (32) is hollow wheel (36), described planetary transmission
(32) third element is planet carrier (33).
12., according to the bulk material conveying equipment (1) of claim 9,10 or 11, is characterized in that, described planetary transmission (32)
The second element (36) pass through spur gear level (37) and described second motor (51) and switchable brake unit (38) company
Connect.
13. bulk material conveying equipments (1) according to claim 12, is characterized in that, described second motorized motions motor (52)
There is the direction of rotation contrary with described first motorized motions motor (51).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202015103817.8U DE202015103817U1 (en) | 2015-07-21 | 2015-07-21 | Bulk material handling system |
| DE202015103817.8 | 2015-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106364852A true CN106364852A (en) | 2017-02-01 |
Family
ID=54010614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610851415.9A Pending CN106364852A (en) | 2015-07-21 | 2016-07-21 | A loose material conveying device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106364852A (en) |
| DE (1) | DE202015103817U1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB177120A (en) * | 1920-12-08 | 1922-03-08 | Lancashire Dynamo & Motor Comp | Improvements in or relating to epicyclic reversing gearing |
| US5011464A (en) * | 1990-03-23 | 1991-04-30 | Sundstrand Corporation | Two-speed automatic transmission |
| CN202518081U (en) * | 2012-04-27 | 2012-11-07 | 重庆大学 | Multi-power source and multi-mode coupling driving system |
| CN103029961A (en) * | 2011-09-29 | 2013-04-10 | 溧阳市保珠建材厂 | Belt conveyor power device |
| CN203395111U (en) * | 2013-07-31 | 2014-01-15 | 郑州机械研究所 | Chain-free variable speed gear driving mechanism for amusing boat |
| CN103879716A (en) * | 2013-12-12 | 2014-06-25 | 中国煤炭科工集团太原研究院有限公司 | Belt loader telescopic nose for coal mines |
-
2015
- 2015-07-21 DE DE202015103817.8U patent/DE202015103817U1/en not_active Expired - Lifetime
-
2016
- 2016-07-21 CN CN201610851415.9A patent/CN106364852A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB177120A (en) * | 1920-12-08 | 1922-03-08 | Lancashire Dynamo & Motor Comp | Improvements in or relating to epicyclic reversing gearing |
| US5011464A (en) * | 1990-03-23 | 1991-04-30 | Sundstrand Corporation | Two-speed automatic transmission |
| CN103029961A (en) * | 2011-09-29 | 2013-04-10 | 溧阳市保珠建材厂 | Belt conveyor power device |
| CN202518081U (en) * | 2012-04-27 | 2012-11-07 | 重庆大学 | Multi-power source and multi-mode coupling driving system |
| CN203395111U (en) * | 2013-07-31 | 2014-01-15 | 郑州机械研究所 | Chain-free variable speed gear driving mechanism for amusing boat |
| CN103879716A (en) * | 2013-12-12 | 2014-06-25 | 中国煤炭科工集团太原研究院有限公司 | Belt loader telescopic nose for coal mines |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202015103817U1 (en) | 2015-08-07 |
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Application publication date: 20170201 |
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