CN111517217A - Cart running mechanism of crane - Google Patents
Cart running mechanism of crane Download PDFInfo
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- CN111517217A CN111517217A CN202010352681.3A CN202010352681A CN111517217A CN 111517217 A CN111517217 A CN 111517217A CN 202010352681 A CN202010352681 A CN 202010352681A CN 111517217 A CN111517217 A CN 111517217A
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- shaft
- speed reducer
- wheel
- running mechanism
- crane
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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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention discloses a cart running mechanism of a crane, which comprises driving units and variable-frequency speed adjusting devices, wherein the four driving units are symmetrically arranged at four corners of a crane, two sets of variable-frequency speed adjusting devices respectively control two driving units at the same side, each driving unit comprises a motor and a brake wheel coupler, the brake wheel couplers are fixedly arranged at one end of the motor shaft, the other end of each brake wheel coupler is connected with a speed reducer, and brakes are arranged on brake wheels of the brake wheel couplers. According to the cart running mechanism of the crane, the speed reducer is horizontally mounted, gears at all stages of the speed reducer can be well lubricated, the input shaft and the output shaft of the speed reducer are arranged in a different side mode, the universal coupling is convenient to maintain and replace, the output shaft of the speed reducer, the universal coupling and the wheel shaft are coaxial, and the service life of a bearing of the universal coupling is greatly prolonged.
Description
Technical Field
The invention relates to the field of cranes, in particular to a cart running mechanism of a crane.
Background
At present, domestic large-scale bridge crane's cart operating device, especially large-scale foundry crane's cart operating device comprises four the same drive unit and one set of stator pressure regulating and speed regulating device usually, and backup contactor bypass control simultaneously, four drive unit symmetrical arrangement constitute the four corners drive in the position at four angles of hoist, and the reduction gear among the drive unit adopts the single input dual output structural style that vertical homonymy was arranged, and this drive unit includes: the brake comprises a motor, a half-tooth coupling, a high-speed transmission shaft, a brake wheel half-tooth coupling, a brake, a speed reducer, a flange plate connector, a universal coupling, a flange plate connector, an active wheel set, a passive wheel set and the like, wherein the speed reducer is vertically installed.
The axes of the input shaft and the output shaft of the speed reducer are not in the same plane any more, and the input shaft and the output shaft are arranged at the same side, the shaft distance between the two output shafts of the speed reducer is unequal to the shaft distance between the two connected wheel shafts, the universal coupling is arranged in an inclined manner, so that the lubricating condition of a high-speed gear pair of the speed reducer is poor, the maintenance and the replacement of the universal coupling are inconvenient, the service life of a bearing of the universal coupling is greatly shortened, meanwhile, the gap between a wheel rim and a track is large, the automatic accurate positioning of the crane is not facilitated, when the stator pressure and speed regulating device fails, the contactor bypass control can only undertake one work cycle, and therefore the large vehicle running mechanism.
Disclosure of Invention
The invention mainly aims to provide a cart running mechanism of a crane, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the cart running mechanism of the crane comprises four driving units and variable-frequency speed regulating devices, wherein the four driving units are symmetrically arranged at four corners of the crane, and the two variable-frequency speed regulating devices respectively control the two driving units at the same side.
Further, drive unit includes motor and braked wheel coupling, braked wheel coupling fixed mounting is in the one end of motor shaft, the other end of braked wheel coupling is connected with the reduction gear, install the stopper on the braked wheel of braked wheel coupling, the both ends of reduction gear opposite side are connected with first ring flange catcher respectively, two first ring flange catcher is installed with the axis symmetry of reduction gear, two the other end of first ring flange catcher is fixed mounting respectively has the transmission shaft, two the other end of transmission shaft is fixed mounting respectively has second ring flange catcher, two the other end of second ring flange catcher is connected with the owner wheelset.
Furthermore, the motors are three variable-frequency speed-regulating asynchronous motors for hoisting and metallurgy, the four motors are divided into two groups, two motors positioned on the same side of a main beam of the crane are one group, and the two motors in each group are controlled by one set of variable-frequency speed-regulating device.
Furthermore, each driving unit also comprises two driving wheel sets and 0-8 driven wheel sets.
Further, the reduction gear includes input shaft, secondary shaft, third axle and output shaft, input shaft fixed mounting is in the middle part of reduction gear, secondary shaft, third axle and output shaft are installed in the positive one side of reduction gear from a left side to the right side, secondary shaft, third axle and output shaft are also installed to the positive opposite side of reduction gear symmetrically, its axis of input shaft, secondary shaft, third axle and the output shaft of reduction gear totally four axles all in same horizontal plane and be parallel to each other.
Furthermore, the shaft in the speed reducer is provided with gears which are helical gears, the helical angles of the two gears on the same shaft are the same, one side of the speed reducer is provided with a lower box body, lubricating oil is arranged in the lower box body of the speed reducer, the gears are lubricated by the lubricating oil, and the height of the lubricating oil in the lower box body of the speed reducer is 2-3 times of the gear modulus of the gear addendum of the bull gear on the immersed second shaft.
Furthermore, the input shaft and the output shaft of the speed reducer are arranged in different sides, the shaft distance between the two output shafts of the speed reducer is the same as the shaft distance between the two main motor car wheel sets, and the axes of the two output shafts and the axes of the two main motor car wheel sets are on the same plane.
Further, the braked wheel shaft coupling includes braked wheel and tooth type shaft coupling, the flange axle is all installed to the one end of braked wheel, braked wheel and flange axle are through the hinge system hole bolted connection, the opposite side of flange axle is equipped with the key, the flange axle passes through the interference fit between key, flange axle and the hole with the tooth type shaft coupling and is connected, the braked wheel links to each other with the input shaft of reduction gear, the other end of tooth type shaft coupling is connected with the axle of motor.
Furthermore, the brake is a normally closed brake, and is opened when the brake is powered on and closed when the brake is powered off.
Furthermore, the wheels of the driving wheel set and the driven wheel set are both of a double-wheel-rim structure, the bottom ends of the wheels of the driving wheel set and the driven wheel set are respectively provided with a track, the wheels of the driving wheel set and the driven wheel set on one side of the track are narrow treads, the wheels of the driving wheel set and the driven wheel set on the other side of the track are wide treads, the tread width of the wheels of the narrow treads is 10-15 mm larger than the width of the track top, and the tread width of the wheels of the wide treads is 25-40 mm larger than the width of the track top.
Compared with the prior art, the invention has the following beneficial effects:
1. the speed reducer is horizontally mounted, so that each stage of gear of the speed reducer can be well lubricated; the input shaft and the output shaft of the speed reducer are arranged in different sides, so that the universal coupling is convenient to maintain and replace; the output shaft of the speed reducer, the universal coupling and the wheel shaft are coaxial in three axes, so that the service life of the bearing of the universal coupling is greatly prolonged, the length of the universal coupling can be shortened, or the universal coupling is replaced by a tooth coupling with an intermediate pipe, so that the driving mechanism is compact and the cost is lower.
2. The automatic and accurate positioning of the crane is facilitated by the wheels on the two rails, one side of each wheel adopts a narrow tread and the other side of each wheel adopts a wide tread; two sets of variable frequency speed regulation devices are used for respectively controlling two motors on the same side, so that when an electric system on one side breaks down, the electric system on the other side works independently for more than eight hours, and the influence of sudden failures on production is prevented.
Drawings
Fig. 1 is a schematic diagram showing the mechanism movement of a cart running mechanism of a crane according to the present invention.
Fig. 2 is a schematic structural diagram of a driving unit of a cart running mechanism of a crane according to the present invention.
Fig. 3 is a schematic structural diagram of a reducer of a cart running mechanism of a crane according to the invention.
Fig. 4 is a sectional view a-a of a decelerator of a cart running mechanism of a crane according to the present invention.
Fig. 5 is a schematic structural diagram of a brake wheel coupling of a cart running mechanism of the crane.
Fig. 6 is a partial enlarged view of a drive unit I of a cart running gear of a crane according to the present invention.
In the figure: 1. a drive unit; 2. a variable frequency speed regulating device; 201. an electric motor; 202. a brake wheel coupling; 203. a brake; 204. a speed reducer; 205. a first flange plate catcher; 206. a drive shaft; 207. a second flange plate catcher; 208. a main wheel set; 209. a driven wheel set; 3. a driving bogie frame; 4. a first end beam; 401. an input shaft; 402. a second shaft; 403. a third axis; 404. an output shaft; 405. a lower box body; 5. a second end beam; 501. a brake wheel; 502. a flange shaft; 503. a key; 504. a tooth coupling; 6. a passive bogie frame; 601. a track; 602. and (7) wheels.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
As shown in fig. 1-6, a cart running mechanism of a crane comprises driving units (1) and variable frequency speed adjusting devices (2), wherein the four driving units (1) are symmetrically arranged at four corners of the crane, and two sets of variable frequency speed adjusting devices (2) respectively control the two driving units (1) at the same side.
Drive unit (1) includes motor (201) and braked wheel coupling (202), braked wheel coupling (202) fixed mounting is in the one end of motor (201) axle, the other end of braked wheel coupling (202) is connected with reduction gear (204), install stopper (203) on braked wheel (501) of braked wheel coupling (202), the both ends of reduction gear (204) opposite side are connected with first ring flange catcher (205) respectively, the axis symmetry installation of two first ring flange catchs (205) and reduction gear (204), the other end of two first ring flange catchs (205) is fixed mounting respectively has transmission shaft (206), the other end of two transmission shafts (206) is fixed mounting second ring flange catcher (207) respectively, the other end of two second ring flange catchs (207) is connected with main motor car wheelset (208).
The top of driving trolley wheelset (208) is installed driving trolley frame (3), first end beam (4) are installed to one side of driving trolley frame (3), the opposite side of first end beam (4) is connected with second end beam (5), the opposite side of second end beam (5) is connected with passive trolley frame (6), two passive trolley wheelsets (209) are installed to the bottom of passive trolley frame (6).
The speed reducer (204) comprises an input shaft (401), a second shaft (402), a third shaft (403) and an output shaft (404), wherein the input shaft (401) is fixedly installed in the middle of the speed reducer (204), the second shaft (402), the third shaft (403) and the output shaft (404) are installed on one side of the front face of the speed reducer (204) from left to right, the second shaft (402), the third shaft (403) and the output shaft (404) are also symmetrically installed on the other side of the front face of the speed reducer (204), and the input shaft (401), the second shaft (402), the third shaft (403) and the output shaft (404) of the speed reducer (204) share four shafts, and the axes of the four shafts are all in the.
A gear is arranged on a shaft in the speed reducer (204), the gear is a helical gear, the helical angles of the two gears on the same shaft are the same, a lower box body (405) is arranged on one side of the speed reducer (204), lubricating oil is arranged in the lower box body (405) of the speed reducer (204), the gears are lubricated by the lubricating oil, and the height of the lubricating oil in the lower box body (405) of the speed reducer (204) is 2-3 times of the gear modulus of the gear teeth on the immersed second shaft (402).
The input shaft (401) and the output shaft (404) of the speed reducer (204) are arranged in different sides, the shaft distance between the two output shafts (404) of the speed reducer (204) is the same as the shaft distance between the two main motor car wheel sets (208), and the axes of the two output shafts (404) and the axes of the two main motor car wheel sets (208) are in the same plane.
The brake wheel coupling (202) comprises a brake wheel (501) and a tooth coupling (504), a flange shaft (502) is installed at one end of the brake wheel (501), the brake wheel (501) is connected with the flange shaft (502) through a hinged hole bolt, a key (503) is arranged on the other side of the flange shaft (502), the flange shaft (502) is connected with the tooth coupling (504) through the key (503) in an interference fit mode, the flange shaft (502) is connected with the hole in an interference fit mode, the brake wheel (501) is connected with an input shaft (401) of the speed reducer (204), and the other end of the tooth coupling (504) is connected with a shaft of the motor (201).
The brake (203) is a normally closed brake, the brake (203) is opened when the power is on, and the brake (203) is closed when the power is off.
By adopting the technical scheme: by horizontally mounting the speed reducer (204), each stage of gears of the speed reducer (204) can be well lubricated; the input shaft (401) and the output shaft (401) of the speed reducer (204) are arranged on different sides, so that the universal coupling is convenient to maintain and replace; the output shaft of the speed reducer (204), the universal coupling and the wheel shaft are coaxial in three shafts, so that the service life of the bearing of the universal coupling is greatly prolonged, the length of the universal coupling can be shortened, or the universal coupling is replaced by a tooth coupling with an intermediate pipe, so that the driving mechanism is compact and the cost is lower.
Example 2
As shown in fig. 1-6, a cart running mechanism of a crane comprises driving units (1) and variable frequency speed adjusting devices (2), wherein the four driving units (1) are symmetrically arranged at four corners of the crane, and two sets of variable frequency speed adjusting devices (2) respectively control the two driving units (1) at the same side.
Drive unit (1) includes motor (201) and braked wheel coupling (202), braked wheel coupling (202) fixed mounting is in the one end of motor (201) axle, the other end of braked wheel coupling (202) is connected with reduction gear (204), install stopper (203) on braked wheel (501) of braked wheel coupling (202), the both ends of reduction gear (204) opposite side are connected with first ring flange catcher (205) respectively, the axis symmetry installation of two first ring flange catchs (205) and reduction gear (204), the other end of two first ring flange catchs (205) is fixed mounting respectively has transmission shaft (206), the other end of two transmission shafts (206) is fixed mounting second ring flange catcher (207) respectively, the other end of two second ring flange catchs (207) is connected with main motor car wheelset (208).
The motors (201) are three asynchronous motors with variable frequency and speed regulation for hoisting and metallurgy, the four motors (201) are divided into two groups, two motors (201) positioned on the same side of a main beam of the crane are one group, and the two motors (201) in each group are controlled by one set of variable frequency and speed regulation device (2).
The top of driving trolley wheelset (208) is installed driving trolley frame (3), first end beam (4) are installed to one side of driving trolley frame (3), the opposite side of first end beam (4) is connected with second end beam (5), the opposite side of second end beam (5) is connected with passive trolley frame (6), two passive trolley wheelsets (209) are installed to the bottom of passive trolley frame (6).
The speed reducer (204) comprises an input shaft (401), a second shaft (402), a third shaft (403) and an output shaft (404), wherein the input shaft (401) is fixedly installed in the middle of the speed reducer (204), the second shaft (402), the third shaft (403) and the output shaft (404) are installed on one side of the front face of the speed reducer (204) from left to right, the second shaft (402), the third shaft (403) and the output shaft (404) are also symmetrically installed on the other side of the front face of the speed reducer (204), and the input shaft (401), the second shaft (402), the third shaft (403) and the output shaft (404) of the speed reducer (204) share four shafts, and the axes of the four shafts are all in the.
The wheels (602) of the driving wheel set (208) and the driven wheel set (209) are both of a double-wheel-rim structure, the bottom ends of the wheels (602) of the driving wheel set (208) and the driven wheel set (209) are respectively provided with a track (601), the wheels (602) of the driving wheel set (208) and the driven wheel set (209) of one side track (601) are narrow treads, the wheels (602) of the driving wheel set (208) and the driven wheel set (209) of the other side track (601) are wide treads, the tread width of the wheels (602) with the narrow treads is 10-15 mm larger than the width of the top of the track (601), and the tread width of the wheels (602) with the wide treads is 25-40 mm larger than the width of the top of the track (601).
By adopting the technical scheme: one side of each wheel (602) on the two rails (601) adopts a narrow tread, and the other side adopts a wide tread, so that the automatic and accurate positioning of the crane is convenient to realize; two sets of variable frequency speed adjusting devices (2) are used for respectively controlling two motors (201) on the same side, so that when an electric system on one side breaks down, the electric system on the other side works independently for more than eight hours, and the influence of sudden failures on production is prevented.
The invention is a cart running mechanism of a crane, when in use, a motor (201) inputs power from an input shaft (401) of a speed reducer (204) through a brake wheel coupling (202), the power is divided into two paths at a first-stage gear meshing position of the speed reducer (204), each path outputs power from an output shaft (404) through two-stage gear transmission, the power output from the speed reducer (204) drives an active cart wheel set (208) to rotate after passing through a first flange plate connecting hand (205), a transmission shaft (206) and a second flange plate connecting hand (207), and the active cart wheel set (208) drags a driven cart wheel set (209) to rotate through an active cart frame (3), a first end beam (4), a second end beam (5) and a driven cart frame (6), so as to drive the whole crane to move in parallel; all wheels (602) on one side of the track (601) are narrow tread wheels, and the wheels (602) on the other side of the track (601) are wide tread wheels, so that the positioning accuracy of the crane during working is improved; when one side variable frequency speed regulating device (2) breaks down, the other side variable frequency speed regulating device (2) can continue to work for eight hours, and the production is prevented from being influenced by the fault state.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The cart running mechanism of the crane comprises driving units and variable-frequency speed regulating devices, and is characterized in that the four driving units are symmetrically arranged at four corners of the crane, and two variable-frequency speed regulating devices respectively control the two driving units at the same side.
2. The cart running mechanism of a crane according to claim 1, wherein: the drive unit includes motor and braked wheel coupling, its characterized in that, braked wheel coupling fixed mounting is in the one end of motor shaft, braked wheel coupling's the other end is connected with the reduction gear, install the stopper on braked wheel coupling's the braked wheel, the both ends of reduction gear opposite side are connected with first ring flange catcher respectively, two first ring flange catcher is installed with the axis symmetry of reduction gear, two the other end of first ring flange catcher is fixed mounting respectively has the transmission shaft, two the other end of transmission shaft is fixed mounting second ring flange catcher respectively, two the other end of second ring flange catcher is connected with the owner and moves the wheelset.
3. The cart running mechanism of a crane according to claim 1, wherein: the motors are three variable-frequency speed-regulating asynchronous motors for hoisting and metallurgy, the four motors are divided into two groups, two motors positioned on the same side of a main beam of the crane are one group, and the two motors in each group are controlled by one set of variable-frequency speed-regulating device.
4. The cart running mechanism of a crane according to claim 1, wherein: each driving unit further comprises two main wheel sets and 0-8 driven wheel sets.
5. The cart running mechanism of a crane according to claim 1, wherein: the speed reducer comprises an input shaft, a second shaft, a third shaft and an output shaft, and is characterized in that the input shaft is fixedly installed in the middle of the speed reducer, the second shaft, the third shaft and the output shaft are installed on one side of the front of the speed reducer from left to right, the second shaft, the third shaft and the output shaft are symmetrically installed on the other side of the front of the speed reducer, and the axes of the four shafts of the input shaft, the second shaft, the third shaft and the output shaft of the speed reducer are all in the same horizontal plane and are parallel to each other.
6. The cart running mechanism of a crane according to claim 1, wherein: the gear is arranged on an axle in the speed reducer, the gear is a helical gear, the directions of helical angles of the two gears on the same axle are the same, a lower box body is arranged on one side of the speed reducer, lubricating oil is arranged in the lower box body of the speed reducer, the gears are lubricated by the lubricating oil, and the height of the lubricating oil in the lower box body of the speed reducer is 2-3 times of the gear modulus of the gear addendum on the immersed second axle.
7. The cart running mechanism of a crane according to claim 1, wherein: the input shaft and the output shaft of the speed reducer are arranged in different sides, the shaft distance between the two output shafts of the speed reducer is the same as that between the two main motor car wheel sets, and the axes of the two output shafts and the axes of the two main motor car wheel sets are on the same plane.
8. The cart running mechanism of a crane according to claim 1, wherein: the brake wheel coupling comprises a brake wheel and a tooth coupling, a flange shaft is installed at one end of the brake wheel and connected with the flange shaft through a hinged hole bolt, a key is arranged on the other side of the flange shaft, the flange shaft and the tooth coupling are connected through interference fit among the key, the flange shaft and the hole, the brake wheel is connected with an input shaft of the speed reducer, and the other end of the tooth coupling is connected with a shaft of the motor.
9. The cart running mechanism of a crane according to claim 1, wherein: the brake is normally closed, and the brake is opened when the power is on, and closed when the power is off.
10. The cart running mechanism of a crane according to claim 1, wherein: the wheels of the driving wheel set and the driven wheel set are of double-wheel-rim structures, the bottom ends of the wheels of the driving wheel set and the driven wheel set are provided with tracks, the wheels of the driving wheel set and the driven wheel set on one side of each track are narrow treads, the wheels of the driving wheel set and the driven wheel set on the other side of each track are wide treads, the tread width of the wheels of the narrow treads is 10-15 mm larger than the width of the top of the track, and the tread width of the wheels of the wide treads is 25-40 mm larger than the width of the top of the track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352681.3A CN111517217A (en) | 2020-04-28 | 2020-04-28 | Cart running mechanism of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352681.3A CN111517217A (en) | 2020-04-28 | 2020-04-28 | Cart running mechanism of crane |
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| Publication Number | Publication Date |
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| CN111517217A true CN111517217A (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010352681.3A Pending CN111517217A (en) | 2020-04-28 | 2020-04-28 | Cart running mechanism of crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112499504A (en) * | 2020-10-29 | 2021-03-16 | 张家港宏昌钢板有限公司 | Structure and method for universal coupling to replace tooth-shaped coupling for transmission |
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| CN201678370U (en) * | 2010-04-29 | 2010-12-22 | 杭州起重机械有限公司 | High-low speed driving device for crane cart traveling mechanism |
| CN202030449U (en) * | 2011-01-31 | 2011-11-09 | 上海振华重工(集团)股份有限公司 | Trolley traveling mechanism preventing biting rail |
| CN202785315U (en) * | 2012-08-23 | 2013-03-13 | 上海宝松重型机械工程（集团）有限公司 | Big wheeled crane |
| CN102976204A (en) * | 2012-11-30 | 2013-03-20 | 大连华锐重工起重机有限公司 | Cart running mechanism for bridge cranes |
| CN203781660U (en) * | 2014-03-22 | 2014-08-20 | 林本顺 | Large vehicle driving mechanism |
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2020
- 2020-04-28 CN CN202010352681.3A patent/CN111517217A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201678370U (en) * | 2010-04-29 | 2010-12-22 | 杭州起重机械有限公司 | High-low speed driving device for crane cart traveling mechanism |
| CN202030449U (en) * | 2011-01-31 | 2011-11-09 | 上海振华重工(集团)股份有限公司 | Trolley traveling mechanism preventing biting rail |
| CN202785315U (en) * | 2012-08-23 | 2013-03-13 | 上海宝松重型机械工程（集团）有限公司 | Big wheeled crane |
| CN102976204A (en) * | 2012-11-30 | 2013-03-20 | 大连华锐重工起重机有限公司 | Cart running mechanism for bridge cranes |
| CN203781660U (en) * | 2014-03-22 | 2014-08-20 | 林本顺 | Large vehicle driving mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112499504A (en) * | 2020-10-29 | 2021-03-16 | 张家港宏昌钢板有限公司 | Structure and method for universal coupling to replace tooth-shaped coupling for transmission |
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