CN108178078B - Hoisting mechanism and hoisting equipment - Google Patents
Hoisting mechanism and hoisting equipment Download PDFInfo
- Publication number
- CN108178078B CN108178078B CN201810181800.6A CN201810181800A CN108178078B CN 108178078 B CN108178078 B CN 108178078B CN 201810181800 A CN201810181800 A CN 201810181800A CN 108178078 B CN108178078 B CN 108178078B
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- brake
- winding drum
- shaft
- reduction gearbox
- planetary reduction
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- 230000007246 mechanism Effects 0.000 title claims abstract description 39
- 230000009467 reduction Effects 0.000 claims abstract description 89
- 238000004804 winding Methods 0.000 claims abstract description 53
- 230000008878 coupling Effects 0.000 claims abstract description 42
- 238000010168 coupling process Methods 0.000 claims abstract description 42
- 238000005859 coupling reaction Methods 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 240000009087 Crescentia cujete Species 0.000 claims description 2
- 235000005983 Crescentia cujete Nutrition 0.000 claims description 2
- 235000009797 Lagenaria vulgaris Nutrition 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
- B66C19/005—Straddle carriers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
- B66C19/007—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries for containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/22—Planetary or differential gearings, i.e. with planet gears having movable axes of rotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
- B66D5/28—Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/01—Winches, capstans or pivots
- B66D2700/0125—Motor operated winches
- B66D2700/0141—Electrically actuated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Retarders (AREA)
Abstract
The invention relates to a lifting mechanism and lifting equipment, wherein the lifting mechanism comprises: a double-output shaft motor having a first output shaft and a second output shaft; one end of the first brake is connected with the first output shaft through a first coupling, and the other end of the first brake is connected with the first planetary reduction gearbox; one end of the second brake is connected with the second output shaft through a second coupling, and the other end of the second brake is connected with a second planetary reduction gearbox; the first planetary reduction gearbox is arranged in the first winding drum and can drive the first winding drum to rotate; the second planetary reduction gearbox is arranged in the second winding drum, and the second planetary reduction gearbox can drive the second winding drum to rotate. The lifting mechanism is simple and compact in arrangement form, light in weight and capable of saving arrangement space.
Description
Technical Field
The invention relates to the technical field of lifting, in particular to a lifting mechanism and lifting equipment.
Background
Straddle carriers play a very important role in the horizontal transport of port containers. The lifting mechanism is required to control lifting and descending of the lifting appliance, so that the container is carried and stacked. Because the lifting mechanism is arranged on the upper platform, the weight of the lifting mechanism has great influence on the whole machine, and the lifting mechanism is strictly limited by the clear width of the straddle carrier, the upper structural space and the like. The traditional lifting mechanism is complex in arrangement form, large in occupied space and heavy in weight.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a lifting mechanism, comprising: a double-output shaft motor having a first output shaft and a second output shaft; one end of the first brake is connected with the first output shaft through a first coupling, and the other end of the first brake is connected with the first planetary reduction gearbox; one end of the second brake is connected with the second output shaft through a second coupling, and the other end of the second brake is connected with a second planetary reduction gearbox; the first planetary reduction gearbox is arranged in the first winding drum and can drive the first winding drum to rotate; the second planetary reduction gearbox is arranged in the second winding drum, and the second planetary reduction gearbox can drive the second winding drum to rotate.
Optionally, the first brake and the second brake have the same structure and are wet multi-disc brakes.
Optionally, the wet multi-disc brake includes: a tray body having an inner cavity;
The brake shaft is arranged in the inner cavity, two axial ends of the brake shaft extend out of the disc body, one end of the brake shaft is connected with the coupling in the axial direction, and the other end of the brake shaft is connected with the planetary reduction gearbox;
the piston is arranged in the inner cavity;
And the friction pair is arranged in the inner cavity, the piston can move along a first direction to enable the friction pair to be engaged to realize braking of the braking shaft, and move along a second direction opposite to the first direction to enable the friction pair to be separated to release the braking of the braking shaft, and the first direction is parallel to the axial direction.
Optionally, the friction pair includes: the first friction plate is connected with the brake shaft, and the second friction plate is arranged facing the piston; the piston can move along the first direction under the action of hydraulic pressure, and moves along the second direction after pressure relief.
Optionally, along the axial direction, the first friction plate and the second friction plate are in one-to-one correspondence, and are a plurality of and are arranged at intervals in sequence.
Optionally, the second friction plate is connected to a wall of the inner cavity.
Optionally, the method further comprises: the support shaft is arranged on the disc body and extends along the axial direction, the piston surrounds the support shaft and can move along the first direction or the second direction relative to the support shaft, and the reset spring is connected with the piston and is used for driving the piston to move along the second direction after pressure relief.
Optionally, the piston has a cavity, and the reset spring is sleeved on the support shaft and is located in the cavity of the piston.
Optionally, one end of the return spring is connected with the piston, and the other end of the return spring is connected with the disc body.
Optionally, one end of the brake shaft is connected with the coupling key, and the other end of the brake shaft is connected with the planetary reduction gearbox key.
Optionally, the tray body is further provided with a liquid inlet and a liquid outlet, the liquid inlet is used for filling hydraulic oil into the inner cavity, and the liquid outlet is used for discharging the hydraulic oil in the inner cavity.
Optionally, the structure of the first planetary reduction gearbox is the same as the structure of the second planetary reduction gearbox, and the planetary reduction gearbox includes: the inner shell wall of the outer shell is provided with an annular gear, the outer shell is connected with a winding drum, and the winding drum can synchronously rotate along with the outer shell;
The planetary gear is connected with the other end of the brake shaft and meshed with the inner gear ring, and the planetary gear can drive the shell to rotate under the drive of the brake shaft.
Optionally, the device further comprises steel wire rope pressing plates which are axially positioned at two ends of the outer surface of the winding drum and used for radially pressing the steel wire rope wound on the winding drum.
The invention also provides a lifting device comprising: a lifting mechanism according to any one of the preceding claims; and the first winding drum and the second winding drum are respectively connected with the lifting appliance upper frame through steel wire ropes and are used for driving the lifting or descending of the lifting appliance upper frame.
Optionally, the lifting device is a straddle carrier.
As described above, the lifting mechanism provided by the present invention includes: the double-output shaft motor is provided with a first output shaft and a second output shaft; and a first brake and a second brake. One end of the first brake is connected with the first output shaft through a first coupling, and the other end of the first brake is connected with the first planetary reduction gearbox; one end of the second brake is connected with the second output shaft through a second coupling, and the other end of the second brake is connected with the second planetary reduction gearbox. Further comprises: a first reel and a second reel. The first planetary reduction gearbox is arranged in the first winding drum and can drive the first winding drum to rotate; the second planetary reduction box is arranged in the second winding drum, and the second planetary reduction box can drive the second winding drum to rotate. Equivalently, the planetary reduction gearbox of the lifting mechanism is 'hidden' in the corresponding winding drum, so that the arrangement space of the lifting mechanism is saved; in addition, the winding drum, the reduction gearbox, the coupling, the brake and the motor are arranged in the same direction and are in a 'calabash string' design, and the lifting mechanism is simple and compact in arrangement form and light in weight.
In order that the above-recited features of the present invention can be understood in detail, a preferred embodiment of the invention is illustrated in the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a lifting mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a double-output shaft motor in a hoisting mechanism according to an embodiment of the invention;
FIG. 3 is a diagram of a joint of a dual output motor coupled to a first coupling and a second coupling, respectively, in a hoist according to an embodiment of the present invention
Schematic construction;
FIG. 4 is a structural illustration of a first coupling and dual output motor and first brake connection in a hoist according to an embodiment of the present invention
Intent;
FIG. 5 is a schematic view of a first brake of a lifting mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of the connection of the friction pair and piston of the first brake in the hoist according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the connection of a first reel and a first planetary reduction gearbox in a lifting mechanism according to an embodiment of the present invention;
fig. 8 is a block diagram of a first planetary reduction gearbox in a lifting mechanism according to an embodiment of the present invention.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details for the purpose of providing a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention.
Referring to fig. 1 to 4, the present invention provides a lifting mechanism comprising: the double-output-shaft motor 10 is provided with a first output shaft 11 and a second output shaft 12, and the double-output-shaft motor 10 is provided with a servo motor and is respectively positioned at two axial ends of the double-output-shaft motor 10; and a first brake 30 and a second brake 31. Wherein, one end of the first brake 30 is connected with the first output shaft 11 through the first coupling 20, and the other end is connected with the first planetary reduction gearbox 50; the second brake 31 has one end connected to the second output shaft 12 via the second coupling 21 and the other end connected to the second planetary reduction gearbox 51.
Further comprises: a first reel 40 and a second reel 41. The first planetary reduction gearbox 50 is arranged in the first winding drum 40, and the first planetary reduction gearbox 50 can drive the first winding drum 40 to rotate; the second planetary reduction gearbox 51 is disposed in the second reel 41, and the second planetary reduction gearbox 51 can drive the second reel 41 to rotate. Under the action of the first planetary reduction gearbox 50 and the second planetary reduction gearbox 51, the high rotational speed of the double-output motor 10 is converted into a low rotational speed of the first spool 40 and the second spool 41, and torque can be transmitted to the first spool 40 and the second spool 41.
Equivalently, the planetary reduction gearbox of the lifting mechanism is "built-in" in the corresponding winding drum, that is, the first planetary reduction gearbox 50 is "built-in" in the first winding drum 40, and the second planetary reduction gearbox 51 is "built-in" in the second winding drum 41, so that the arrangement space of the lifting mechanism is saved. In addition, the winding drum, the reduction gearbox, the coupling, the brake and the motor are arranged in the same direction (shown in the X direction in fig. 1), the lifting mechanism is integrally in a 'hoist string' design, and the arrangement form of the lifting mechanism is simple and compact; the brake is arranged between the planetary reduction gearbox and the coupling, and a special mounting base is not needed, so that the whole lifting mechanism is light in weight.
With continued reference to fig. 1, wherein the first planetary reduction gearbox 50 is supported by the first gearbox bracket 32, the first reel 40 is connected to the first reel bracket 44 by the first shaft 42, such that the first gearbox bracket 32 and the first reel bracket 44 support the first planetary reduction gearbox 50 and the first reel 40, and the first reel 40 rotates smoothly under the drive of the first planetary reduction gearbox 50. Also, the second planetary reduction gear box 51 is supported by the second reduction gear box holder 33, and the second reel 41 is connected to the second reel holder 45 by the second shaft 43, so that the second reduction gear box holder 33 and the second reel holder 45 support the second planetary reduction gear box 51 and the second reel 41, and the second reel 41 smoothly rotates under the driving of the second planetary reduction gear box 51.
In this embodiment, the first brake 30 and the second brake 31 have the same structure and are wet multi-disc brakes. Referring to fig. 5 and6, taking the structure of the first brake 30 as an example, the first brake 30 includes: the disc 301 has a brake shaft 303 disposed in an inner cavity 302 of the disc 301, both axial ends of the brake shaft 303 extend out of the disc 301, and one end of the brake shaft 303 is connected to the first coupling 20, and the other end is connected to the first planetary reduction gearbox 50, as shown in fig. 4 and 1.
A piston 305 and a friction pair 304 are also provided in the inner cavity 302 of the disc 301 of the first brake 30, the piston 305 being movable in a first direction (indicated in direction a in fig. 5) to engage the friction pair 304 to effect braking of the brake shaft 303, the brake shaft 303 not being rotated by the dual output motor 10. The piston 305 is movable in a second direction (shown in a direction B in fig. 5) opposite to the first direction, which is parallel to the axial direction (shown in a direction Y in fig. 5), to disengage the friction pair 304 to release the braking of the braking shaft 303, and the braking shaft 303 is rotatable by the drive of the double output shaft motor 10 to thereby power the first planetary reduction gearbox 50.
That is, when the double output shaft motor 10 operates, the first output shaft 11 and the second output shaft 12 rotate in the same direction. The first output shaft 11 drives the first coupling 20 to rotate, and when the first brake 30 is not braked, the first coupling 20 can drive the brake shaft 303 in the first brake 30 to rotate, and then the brake shaft 303 provides power to the first planetary reduction gearbox 50, and the first winding drum 40 rotates under the drive of the first planetary reduction gearbox 50. Similarly, the second output shaft 12 drives the second coupling 21 to rotate, and when the second brake 31 is not braked, the second coupling 21 can drive the brake shaft in the second brake 31 to rotate, so that the brake shaft in the second brake 31 provides power to the second planetary reduction gearbox 51, and the second winding drum 41 rotates under the drive of the second planetary reduction gearbox 51.
When the first brake 30 and the second brake 31 are rotated, the brake shaft 303 in the first brake 30 and the brake shaft in the second brake 31 are stopped from rotating, so that the first reel 40 and the second reel 41 are stopped from rotating.
Specifically, referring to fig. 5 and 6, the friction pair 304 in the first brake 30 includes: a first friction plate 37 and a second friction plate 36, the first friction plate 37 being connected to the brake shaft 303, the second friction plate 36 being disposed facing the piston 305; in this embodiment, the disc 301 is further provided with a liquid inlet 30a and a liquid outlet 30b, the liquid inlet 30a is used for filling hydraulic oil into the inner cavity 302 of the disc 301, and the piston 305 can move along a first direction under the hydraulic action of the hydraulic oil to drive the first friction plate 37 and the second friction plate 36 to be engaged, so as to realize braking of the brake shaft 303; the liquid outlet 30b is used for discharging hydraulic oil in the inner cavity 302, and after the inner cavity 302 of the disc 301 is depressurized, the piston 305 can move along the second direction, so that the engaged first friction plate 37 and second friction plate 36 are separated, and the braking of the brake shaft 303 is released. In other embodiments, the piston may be driven in the first direction or the second direction in other ways.
The friction plate is soaked in the hydraulic oil, so that abrasion of the friction plate is reduced, and the hydraulic oil takes away heat generated by braking to dissipate heat when the friction pair 304 brakes, so that the service life of the friction plate is prolonged.
In this embodiment, the first friction plates 37 and the second friction plates 36 are in one-to-one correspondence along the axial direction, and are plural and sequentially arranged at intervals. Six first friction plates 37 and six second friction plates 36 are shown in fig. 6, and the sequential spacing of the first friction plates 37 and the second friction plates 36 can be understood as: the first friction plates 37 and the second friction plates 36 are alternately arranged. Wherein the second friction plate 36 is coupled to the wall of the inner cavity 302. The second friction plate 36 may be keyed to a wall of the inner chamber 302 such that when the piston 305 moves in a first direction, the second friction plate 36 is able to move in a first direction axially relative to the wall of the inner chamber 302 such that the second friction plate 36 engages the first friction plate 37 to effect braking of the brake shaft 303. When the piston 305 moves along the second direction, the brake shaft 303 continues to rotate, the second friction plate 36 is "thrown away" at the moment of rotation of the brake shaft 303, the second friction plate 36 moves back along the second direction, and the friction pair 304 is convenient to use.
The first brake 30 further includes: a support shaft 34 and a return spring 35 provided on the disk 301. Wherein the support shaft 34 extends in an axial direction, and the piston 305 is disposed around the support shaft 34 and is movable in a first direction or a second direction with respect to the support shaft 34. A return spring 35 is connected to the piston 305 for driving the piston 305 in a second direction after pressure relief. After the hydraulic oil is filled into the inner cavity 302 of the disc body 301 through the liquid inlet 30a, the piston 305 can move along the first direction relative to the support shaft 34 under the hydraulic action of the hydraulic oil, and the return spring 35 elastically deforms to generate elastic force; the hydraulic oil in the inner cavity 302 is discharged through the liquid outlet 30b, and after the inner cavity 302 of the disc 301 is depressurized, the piston 305 can move along the second direction relative to the support shaft 34 under the elastic force of the return spring 35.
It should be noted that, the specific position of the piston 305 is not limited, as long as the piston 305 can be driven to move along the second direction after the inner cavity 302 of the disc 301 is depressurized after being connected with the piston 305. Referring to fig. 6, in the present embodiment, the piston 305 has a cavity, and the return spring 35 is sleeved on the support shaft 34 and is located in the cavity of the piston 305. The return spring 35 has one end connected to the piston 305 and the other end connected to the disk 301. In other embodiments, the other end of the return spring 35 may be connected to the support shaft 34.
Under the action of hydraulic pressure, the piston 305 can move along a first direction relative to the support shaft 34, the return spring 35 is stretched to generate elastic deformation and generate elastic force, after the inner cavity 302 of the disc 301 is depressurized, under the action of the elastic force of the return spring 35, the piston 305 returns, and the piston 305 can move along a second direction relative to the support shaft 34. The support shaft 34 serves to support the piston 305 on the one hand, and the return spring 35 is provided in the cavity of the piston 305 to serve as an axial guide, so that the piston 305 can smoothly move in the first direction or the second direction.
With continued reference to fig. 4 and 5 in conjunction with fig. 1, in this embodiment, brake shaft 303 is keyed to first coupling 20 at one end and first planetary reduction gearbox 50 at the other end. Wherein, one end of the brake shaft 303 is provided with a spline 30c, the other end is provided with a spline 30d, one end of the brake shaft 303 is connected with the first coupling 20 through the spline 30c in a key way, and the other end is connected with the first planetary reduction gearbox 50 through the spline 30d in a key way. One end of the first coupling 20 is connected with the double-output shaft motor 10 in a flat key mode, the other end of the first coupling is connected with the first brake 30 in a spline mode, the axial length is shortened, and the first brake 30 is convenient to slide and disassemble for maintenance. That is, the first brake 30 is conveniently detached from the first planetary reduction gearbox 50 and the first coupling 20 by means of the key type connection, so that the maintenance is convenient, and the disassembly and maintenance of the components are greatly facilitated.
The first planetary reduction gear box 50 of the present invention has the same structure as the second planetary reduction gear box 51, and referring to fig. 7 and 8, taking the structure of the first planetary reduction gear box 50 as an example, the first planetary reduction gear box 50 includes: an outer case 50a, the inner case wall of the outer case 50a having an inner gear ring 52, the outer case 50a being connected to the first drum 40, the first drum 40 being capable of rotating synchronously with the outer case 50 a; the planetary gear is connected to the other end of the brake shaft 303 of the first brake 30 and is engaged with the ring gear 52, and the planetary gear can drive the housing 50a to rotate under the driving of the brake shaft 303, thereby driving the first drum 40 to rotate.
Specifically, referring to fig. 8, the planetary gear of the present invention includes: sun gear 53, first planetary gear 54, second planetary gear 56, third planetary gear 59 arranged at intervals along the same axial direction. Wherein, the sun gear 53 is connected with the other end of the braking shaft 303 of the first brake 30, the sun gear 53 is meshed with the first planet gears 54, and the first planet gears 54 are arranged on the first planet carrier 55 and meshed with the inner gear ring 52 of the inner shell wall of the outer shell 50 a; the other end of the first planetary gear carrier 55 is connected with a fourth planetary gear 57, the second planetary gear 56 is respectively meshed with the fourth planetary gear 57 and the inner gear ring 52 of the inner shell wall of the outer shell 50a, and the second planetary gear 56 is arranged on the second planetary gear carrier 58; the other end of the second carrier 58 is connected to the fifth planetary gear 60, and the third planetary gear 59 is meshed with the fifth planetary gear 60 and the ring gear 52 of the inner housing wall of the outer housing 50a, respectively. With the above-described structural design, after the brake shaft 303 of the first brake 30 drives the sun gear 53 to rotate, the housing 50a of the first planetary reduction gearbox 50 rotates under the drive of each planetary gear, and the first spool 40 rotates with the housing 50a of the first planetary reduction gearbox 50.
In other embodiments, other forms of planetary gear arrangements may be employed, so long as the planetary gears are capable of driving the housing 50a in rotation.
With continued reference to fig. 7, the first reel 40 of the present invention further includes a wire rope pressing plate 40b axially disposed at two ends of the outer surface of the first reel 40 for radially pressing the wire rope 40a wound around the first reel 40. The specific shape of the wire rope pressing plate 40b is not limited as long as the wire rope 40a wound around the first drum 40 can be pressed in the radial direction. Referring to fig. 7, portions of each wire rope pressing plate 40b located at both axial ends of the outer surface of the first drum 40 facing the wire rope 40a have recesses to be engaged with the wire rope 40a, the recesses being for accommodating the wire rope 40a. After the wire rope pressing plate 40b is connected to the first drum 40 in the radial direction, the wire rope 40a is pressed in the radial direction, and the wire rope 40a is prevented from being released from the first drum 40.
The first reel 40 and the second reel 41 have the same structure, the first brake 30 and the second brake 31 have the same structure, the first coupling 20 and the second coupling 21 have the same structure, and the first planetary reduction gear box 50 and the second planetary reduction gear box 51 have the same structure. The structure of the first spool 40, the first brake 30, the first coupling 20, and the first planetary reduction gear box 50 is taken as an example in this embodiment, and the structure of the second spool 41, the second brake 31, the second coupling 21, and the second planetary reduction gear box 51 is specifically described above and will not be described herein.
The invention also provides a lifting device comprising: the lifting mechanism of any one of the embodiments above; the first reel 40 and the second reel 41 are connected to a spreader upper frame (not shown) through wire ropes 40a, respectively, for driving lifting or lowering of the spreader upper frame. In this embodiment, the lifting device is a straddle carrier. In other embodiments, other types of devices may be used.
In summary, the above embodiments are provided to illustrate the principles of the present invention and its efficacy, but not to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (8)
1. A lifting mechanism, comprising:
A double-output shaft motor having a first output shaft and a second output shaft;
One end of the first brake is connected with the first output shaft through a first coupling, the other end of the first brake is connected with the first planetary reduction gearbox, and the first brake is arranged between the first planetary reduction gearbox and the first coupling without a special mounting base, so that the whole lifting mechanism is light in weight;
one end of the second brake is connected with the second output shaft through a second coupling, the other end of the second brake is connected with a second planetary reduction gearbox, and the second brake is arranged between the second planetary reduction gearbox and the second coupling without a special mounting base, so that the whole lifting mechanism is light in weight;
The first brake and the second brake have the same structure and are wet multi-disc brakes; the wet multi-disc brake includes:
A tray body having an inner cavity;
The brake shaft is arranged in the inner cavity, two axial ends of the brake shaft extend out of the disc body, one end of the brake shaft is connected with the coupling in the axial direction, and the other end of the brake shaft is connected with the planetary reduction gearbox;
the piston is arranged in the inner cavity;
The friction pair is arranged in the inner cavity, the piston can move along a first direction to enable the friction pair to be connected to realize braking of the braking shaft, at the moment, the braking shaft cannot rotate under the driving of the double-output-shaft motor, and moves along a second direction opposite to the first direction to enable the friction pair to separate and release braking of the braking shaft, at the moment, the braking shaft can rotate under the driving of the double-output-shaft motor and then power the first planetary reduction gearbox, and the first direction is parallel to the axial direction;
the first planetary reduction gearbox is arranged in the first winding drum and can drive the first winding drum to rotate, and the first brake and the first coupling are positioned outside the first winding drum;
the second planetary reduction gearbox is arranged in the second winding drum, the second planetary reduction gearbox can drive the second winding drum to rotate, and the second brake and the second coupling are positioned outside the second winding drum;
The first winding drum, the first planetary reduction gearbox, the first coupling, the first brake, the second winding drum, the second planetary reduction gearbox, the second coupling, the second brake and the double-output-shaft motor are arranged in the same direction, and the lifting mechanism is integrally in a calabash string design;
The first planetary reduction gearbox is supported by a first reduction gearbox support, the first winding drum is connected with the first winding drum support through a first shaft, so that the first reduction gearbox support and the first winding drum support the first planetary reduction gearbox and the first winding drum, and the first winding drum stably rotates under the driving of the first planetary reduction gearbox; the second planetary reduction gearbox is supported by a second reduction gearbox support, the second winding drum is connected with the second winding drum support through a second shaft, so that the second reduction gearbox support and the second winding drum support the second planetary reduction gearbox and the second winding drum, and the second winding drum stably rotates under the driving of the second planetary reduction gearbox;
The friction pair comprises: the first friction plate is connected with the brake shaft, the second friction plate is arranged facing the piston, and the first friction plate and the second friction plate are immersed in hydraulic oil;
The piston can move along the first direction under the action of hydraulic pressure, and moves along the second direction after pressure relief;
the support shaft is arranged on the tray body and extends along the axial direction, the piston is arranged around the support shaft and can move along the first direction or the second direction relative to the support shaft,
The reset spring is connected with the piston and used for driving the piston to move along the second direction after pressure relief;
The piston is provided with a cavity, and the reset spring is sleeved on the supporting shaft and is positioned in the cavity of the piston;
one end of the brake shaft is connected with a coupling key, the other end of the brake shaft is connected with a planetary reduction gearbox key, one end of the coupling is connected with the double-output-shaft motor in a flat key mode, and the other end of the coupling is connected with a brake through a spline;
the steel wire rope pressing plates are axially positioned at two ends of the outer surface of the winding drum and are used for radially pressing steel wire ropes wound on the winding drum, and a part, facing the steel wire ropes, of each steel wire rope pressing plate positioned at two axial ends of the outer surface of the winding drum is provided with a concave part matched with the steel wire ropes, and the concave parts are used for accommodating the steel wire ropes.
2. The lifting mechanism according to claim 1, wherein the first friction plates and the second friction plates are in one-to-one correspondence along the axial direction and are arranged in a plurality of and sequentially spaced-apart manner.
3. The lifting mechanism of claim 2, wherein the second friction plate is coupled to a wall of the inner cavity.
4. The lifting mechanism of claim 1, wherein one end of the return spring is connected to the piston and the other end is connected to the disc.
5. The lifting mechanism of claim 1, wherein the tray body is further provided with a liquid inlet and a liquid outlet, the liquid inlet is used for filling the inner cavity with hydraulic oil, and the liquid outlet is used for discharging the hydraulic oil in the inner cavity.
6. The lifting mechanism according to claim 1, wherein the first planetary reduction box has the same structure as the second planetary reduction box, and the planetary reduction box includes:
the inner shell wall of the outer shell is provided with an annular gear, the outer shell is connected with a winding drum, and the winding drum can synchronously rotate along with the outer shell;
The planetary gear is connected with the other end of the brake shaft and meshed with the inner gear ring, and the planetary gear can drive the shell to rotate under the drive of the brake shaft.
7. A lifting apparatus, comprising:
A lifting mechanism as claimed in any one of claims 1 to 6;
and the first winding drum and the second winding drum are respectively connected with the lifting appliance upper frame through steel wire ropes and are used for driving the lifting or descending of the lifting appliance upper frame.
8. The lifting apparatus of claim 7, wherein the lifting apparatus is a straddle carrier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810181800.6A CN108178078B (en) | 2018-03-06 | 2018-03-06 | Hoisting mechanism and hoisting equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810181800.6A CN108178078B (en) | 2018-03-06 | 2018-03-06 | Hoisting mechanism and hoisting equipment |
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| CN108178078A CN108178078A (en) | 2018-06-19 |
| CN108178078B true CN108178078B (en) | 2024-04-23 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110436364A (en) * | 2019-06-30 | 2019-11-12 | 安徽省宿州市龙华机械制造有限公司 | A kind of New Haulage Winch depth indicator |
| CN110451418A (en) * | 2019-06-30 | 2019-11-15 | 安徽省宿州市龙华机械制造有限公司 | A kind of novel large-tonnage haulage gear |
| CN111776970B (en) * | 2020-07-17 | 2021-09-07 | 嘉兴欣晟电机股份有限公司 | Double-hanging fixed type winch |
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| CN108178078A (en) | 2018-06-19 |
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