CN210529469U - Driving mechanism of longitudinal translation type opening bridge - Google Patents
Driving mechanism of longitudinal translation type opening bridge Download PDFInfo
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- CN210529469U CN210529469U CN201920695071.6U CN201920695071U CN210529469U CN 210529469 U CN210529469 U CN 210529469U CN 201920695071 U CN201920695071 U CN 201920695071U CN 210529469 U CN210529469 U CN 210529469U
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Abstract
A driving mechanism for longitudinally-translating opening bridge comprises a driving track, a chain driving device, a fixed bridge, a movable bridge and a driving slide block frame, wherein the driving track is fixed on the fixed bridge, the chain driving device comprises a speed reducing motor with an output shaft and a chain track, the output shaft of the speed reducing motor is provided with a chain wheel, the chain wheel is meshed with the chain track, the speed reducing motor is fixed on the driving slide block frame, the chain track is fixed on the fixed bridge, the upper end of the driving slide block frame is hung on the driving track through a horizontal guiding mechanism and a vertical guiding mechanism, and the lower end of the driving slide block frame is connected with the movable bridge through a vertical large pin shaft. The utility model discloses a sprocket and the orbital meshing of chain act on, drive slider frame and remove the crane span structure and carry out vertical translation along the drive track, realize that the telescopic of lower floor's bridge floor is opened, and it is reliable to operate steadily, to bridge deformation strong adaptability, control accuracy is high.
Description
Technical Field
The utility model relates to an actuating mechanism, in particular to provide driving mechanism of power in bridge is opened to vertical translation formula belongs to and opens bridge actuating mechanism technical field.
Background
The open bridge is also called a movable bridge or an opening and closing bridge, and the open bridge can improve the navigation clearance height of the bridge, so that the bridge can be built on a river channel in which the bridge cannot be built, and the open bridge is suitable for the river channel or a port in which high and large ships need to navigate due to infrequent traffic. The advantages are that the pier is lower, so the condition of connecting the slopes at both sides can be greatly reduced, the engineering quantity of bridge approach and embankment at both sides can be reduced, and the possibility of non-motor vehicles crossing the river under the condition of limited longitudinal slope can be realized. At present, the existing opening bridge at home and abroad mainly has three forms of a horizontal rotation type, a vertical rotation type and a vertical lifting type. The horizontally-rotating open bridge span structure can rotate around a vertical shaft to open a bridge, and ships on a river channel can pass through the horizontally-rotating open bridge span structure when the horizontally-rotating open bridge span structure rotates 90 degrees; the vertical rotary open bridge is a bridge which makes a bridge span structure on a channel into a bridge which can be opened and closed in a rotary mode on a vertical surface, is a single-blade vertical rotary bridge with an opening and closing integrated span structure from one end, and is a double-blade vertical rotary bridge with an opening and closing structure divided into two parts from two ends; the bridge span of the middle navigation part of the lifting type opening bridge is made into a lifting structure, and a tower and a suspended balance weight need to be built at two ends of the opening bridge span. The on-bridge traffic needs to be interrupted when the on-bridge opening mode is opened, meanwhile, due to the limitation of mechanical lifting capacity, the opening width is generally small, ships need to be decelerated and pass through, and the on-bridge traffic function and the off-bridge ship traffic capacity are seriously influenced because the ships need to be opened when passing through.
Aiming at the defects of the traditional open bridge, the lower-layer longitudinally-translational open bridge has the advantages of high safety performance, no influence on the traffic of the upper-layer bridge during opening and the like, is a brand-new open bridge, and has wide application prospect. However, due to the fact that the longitudinal translation type opening bridge has a large span and a complex structure, the requirement on synchronism of movement of each structure is high in the opening state, the upper layer structure can generate downward deflection deformation in the process of longitudinal movement of the travelling crane and the lower layer movable bridge, deformation difference exists between the movable bridge and the main body structure, and from the safety perspective, under the condition that the driving motor fails in power failure, the driving motor is required to have a self-locking function to prevent the movable bridge from sliding down a slope, the traditional driving mechanism cannot adapt to the floating deformation and the safety requirement, and a novel driving mechanism is urgently needed to be developed.
SUMMERY OF THE UTILITY MODEL
The problem to prior art exists, the utility model provides a bridge's actuating mechanism is opened to vertical translation formula uses this actuating mechanism after, through sprocket and the orbital meshing effect of chain, for the work counter-force that the removal crane span structure provided vertical flexible translation, drives and removes the crane span structure and carry out vertical translation along drive rail, realizes the telescopic of bridge floor and opens, simple structure, and it is reliable to operate steadily, to bridge deformation strong adaptability, control accuracy height.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a driving mechanism of a longitudinal translation type opening bridge comprises a driving track, a chain driving device, a fixed bridge, a movable bridge and a driving slider frame, wherein the driving track is fixed on the fixed bridge, the chain driving device comprises a speed reducing motor with an output shaft and a chain track, the speed reducing motor is fixed on the driving slider frame, the output shaft of the speed reducing motor is provided with a chain wheel with wheel teeth, the chain wheel is meshed with the chain track to drive the driving slider frame to walk along the driving track, the chain track is fixed on the driving track, the upper end of the driving slider frame is suspended on the driving track through a horizontal guiding mechanism and a vertical guiding mechanism, the lower end of the driving slider frame is connected with the movable bridge through a vertical large pin shaft, and the lower end of the vertical large pin shaft is provided with a pin shaft mounting plate, the pin shaft mounting plate is fixedly connected with the movable bridge through a bolt, a vertical through hole is formed in the center of the driving slider frame, and the vertical through hole is in lateral contact connection with the large vertical pin shaft, so that the large vertical pin shaft can float up and down in the vertical through hole when the fixed bridge generates vertical displacement, and the driving slider frame can adapt to structural deformation of a bridge when driving the movable bridge to move longitudinally;
the chain driving device comprises a horizontal guiding mechanism and a vertical guiding mechanism which are arranged on the driving slider frame, the horizontal guiding mechanism comprises two groups of supporting frames and two groups of horizontal guiding wheels which are connected with the two groups of supporting frames through pin shafts, the front group of supporting frames and the rear group of supporting frames are respectively and tightly connected with the two ends of the driving slider frame in the transverse direction, the left side and the right side of the same group of supporting frames are symmetrically arranged on the two sides of the driving track, the two groups of horizontal guiding wheels are respectively abutted against the two sides of the driving track so as to enable the left side and the right side of the movable bridge frame to move stably, the vertical guiding mechanism comprises two groups of outer cover plates, two groups of guiding wheel shafts and two groups of vertical guiding wheels, the front side and the rear side of the two groups of outer cover plates are symmetrically arranged on the two sides of the speed reducing motor, the driving rails are symmetrically arranged on two sides of the driving rail at the right side, the cross sections of the driving rails are I-shaped, a first horizontal steel plate is arranged at the bottom end of the driving rail, two groups of guide wheel shafts are symmetrically arranged on two sides of the first horizontal steel plate at the upper and lower sides, the guide wheel shafts are in interference fit with the vertical guide wheels, and the vertical guide wheels are abutted against two sides of the first horizontal steel plate so that the driving rail can move linearly up and down stably;
the driving mechanism further comprises a synchronous driving controller, and the synchronous driving controller is electrically connected with the speed reducing motor to control the speed reducing motor to rotate forwards and reversely.
The utility model discloses a solve its technical problem, the further technical scheme who adopts is:
furthermore, a supporting plate is arranged on the side face of the driving slider frame, the supporting plate is fixedly connected with the speed reducing motor through an inner hexagon bolt, the speed reducing motor is provided with an upper cover plate, the upper cover plate is inserted through an output shaft of the speed reducing motor, and the output shaft of the speed reducing motor is fixedly connected with the upper cover plate through the inner hexagon bolt so that the chain wheel is stably meshed with the chain track.
Furthermore, the opening bridge is provided with an upper-layer bridge body, the upper-layer bridge body is provided with a fixed cross beam, the top of the driving track is provided with a second horizontal steel plate, and the second horizontal steel plate is in bolt-up connection with the fixed cross beam of the upper-layer bridge body.
Furthermore, the body of the driving track is a vertical steel plate, the lower end of the vertical steel plate is fixedly connected with the first horizontal steel plate, the upper end of the vertical steel plate is fixedly connected with the second horizontal steel plate, the chain track is fixedly connected with the vertical steel plate of the driving track through hexagon socket head cap bolts, and the chain wheel is meshed with the chain track.
Furthermore, the driving mechanism is provided with a box beam, the driving slider frame is provided with a mounting hole, and the box beam is arranged in the mounting hole of the driving slider frame.
The guide wheel shaft comprises a long end shaft and a short end shaft, the box beam is provided with a positioning hole, the long end shaft is inserted into the positioning hole of the box beam and is fixedly connected with the outer cover plate through a bolt, and the short end shaft is in interference fit with the vertical guide wheel.
Furthermore, the movable bridge is provided with a preformed hole, the vertical large pin shaft is inserted into the preformed hole, and the pin shaft mounting plate and the movable bridge are fixedly connected through the vertical large pin shaft through a bolt so that the driving mechanism is fixed on the movable bridge.
Furthermore, the difference between the aperture of the vertical through hole of the driving slider frame and the shaft diameter of the vertical large pin shaft is 3-5 mm.
Furthermore, the speed reducing motor is a speed reducing motor with a self-locking function, and the ratio of self-locking force to power of the speed reducing motor is 2-3.
The utility model has the advantages that:
the utility model has the advantages of simple structure, convenient manufacture, low power, effective construction cost saving, light weight, compact volume, convenient arrangement on a movable bridge frame, convenient operation, large transmission torque, high working efficiency, suitability for use on an open bridge and shortened construction period;
the movable bridge frame of the utility model has good deformation adaptability, and the vertical large pin shaft is connected between the driving slider frame and the movable bridge frame along the driving track in a floating manner, namely when the fixed bridge frame and the movable bridge frame on the upper layer generate vertical displacement, the vertical large pin shaft arranged on the movable bridge frame can slide up and down in the vertical through hole on the driving slider frame so as to adapt to the deformation difference between the main structure of the movable bridge frame and the main structure of the opening bridge;
thirdly, the driving mechanism of the utility model is applied to the opening bridge and has good moving stability, the utility model is provided with two groups of horizontal guide wheels and vertical guide wheels which are respectively in close contact with the vertical steel plate of the driving track and the first horizontal steel plate at the bottom end of the driving track, thereby not only enhancing the anti-overturning capability, but also preventing the driving mechanism from being separated from the driving track, and ensuring that the moving bridge frame can stably carry out linear reciprocating motion;
fourthly, the driving mechanism of the utility model has high control precision, the utility model adopts the driving of the gear motor, can realize stepless speed regulation and accurate control, is matched with a synchronous driving controller, and the synchronous driving controller is electrically connected with the gear motor to control the gear motor to rotate forwards and backwards, can accurately realize the synchronous output of a plurality of devices, and ensures the uniformity and consistency of the driving force;
fifth, the utility model discloses an actuating mechanism operational reliability is high, the utility model discloses well sprocket is vertical face with the orbital contact surface of chain, has avoided the gathering of precipitate and impurity, is favorable to guaranteeing transmission precision and reliability.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is one of the structural schematic diagrams of a driving mechanism of a longitudinal translation type opening bridge according to the present invention;
fig. 2 is a second schematic structural view of a driving mechanism of a longitudinally-translating opening bridge according to the present invention;
fig. 3 is a third schematic structural view of a driving mechanism of a longitudinal translation type opening bridge according to the present invention;
FIG. 4 is a transverse cross-sectional view of FIG. 3;
the parts in the drawings are marked as follows:
the device comprises a chain wheel 1, an upper cover plate 2, a driving rail 3, a chain rail 4, an outer cover plate 5, a speed reducing motor 6, a support frame 7, a guide wheel shaft 8, a vertical guide wheel 9, a horizontal guide wheel 10, a box girder 11, a driving slider frame 12, a vertical large pin shaft 13, a pin shaft mounting plate 14, a fixed bridge frame 15 and a movable bridge frame 16.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and the advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention. The present invention can also be implemented in other different ways, i.e. different modifications and changes can be made without departing from the scope of the present invention.
Examples
A driving mechanism of a longitudinally-translated type opening bridge is disclosed, as shown in figures 1-4, and comprises a driving track 3, a chain driving device, a fixed bridge 15, a movable bridge 16 and a driving slide frame 12, wherein the driving track is fixed on the fixed bridge 15, the chain driving device comprises a speed reduction motor 6 with an output shaft and a chain track 4, the output shaft of the speed reduction motor is provided with a chain wheel 1 with gear teeth, the chain wheel 1 is meshed with the chain track 4 to drive the driving slide frame 12 to walk along the driving track 3, the chain track 4 is fixed on the driving track 3, the speed reduction motor 6 is fixed on the driving slide frame 12, the upper end of the driving slide frame 12 is suspended on the driving track 3 through a horizontal and vertical guiding mechanism, and the lower end of the driving slide frame 12 is connected with the movable bridge 16 through a vertical large pin shaft 13, a pin shaft mounting plate 14 is arranged at the lower end of the large vertical pin shaft 13, the pin shaft mounting plate 14 is in bolt fastening connection with the movable bridge frame 16, a vertical through hole is arranged at the center of the driving slider frame 12, and the vertical through hole is in lateral contact connection with the large vertical pin shaft 13, so that the large vertical pin shaft 13 can float up and down in the vertical through hole when the fixed bridge frame 15 generates vertical displacement, and the driving slider frame 12 drives the movable bridge frame 16 to longitudinally move so as to adapt to bridge structural deformation;
the chain driving device comprises a horizontal guiding mechanism and a vertical guiding mechanism which are arranged on a driving slide block frame 12, the horizontal guiding mechanism comprises two groups of supporting frames 7 and two groups of horizontal guiding wheels 10 which are in pin connection with the two groups of supporting frames, the front group of supporting frames 7 and the rear group of supporting frames 7 are respectively in fastening connection with two ends of the driving slide block frame 12 in the transverse direction, the same group of supporting frames 7 are symmetrically arranged at two sides of a driving track 3 in the left and right directions, the two groups of horizontal guiding wheels 10 are respectively in butt contact with two sides of the driving track 3 so as to enable the left and right sides of a movable bridge frame 16 to move in a straight line, the vertical guiding mechanism comprises two groups of outer cover plates 5, two groups of guiding wheel shafts 8 and two groups of vertical guiding wheels 9, the two groups of outer cover plates 5 are symmetrically arranged at two sides of a speed reducing motor 6 in the front and rear directions, the two groups of guide wheel shafts 8 are symmetrically arranged on the left side and the right side of the driving track 3, the driving track 3 is a driving track with an I-shaped cross section, a first horizontal steel plate is arranged at the bottom end of the driving track 3, the two groups of guide wheel shafts 8 are symmetrically arranged on the two sides of the first horizontal steel plate in an up-and-down mode, the guide wheel shafts 8 are in interference fit with the vertical guide wheels 9, and the vertical guide wheels 9 are abutted against the two sides of the first horizontal steel plate so that the driving track 3 can move linearly up and down stably;
the driving mechanism further comprises a synchronous driving controller, and the synchronous driving controller is electrically connected with the speed reducing motor 6 to control the speed reducing motor to rotate forwards and reversely.
The side of the driving slider frame 12 is provided with a supporting plate, the supporting plate is fastened and connected with the speed reducing motor 6 through an inner hexagonal bolt, the speed reducing motor 6 is provided with an upper cover plate 2, the upper cover plate 2 is inserted through an output shaft of the speed reducing motor 6, and the output shaft of the speed reducing motor 6 is fastened and connected with the upper cover plate 2 through an inner hexagonal bolt so that the chain wheel 1 is stably meshed with the chain track 4.
The opening bridge is provided with an upper bridge body, the upper bridge body is provided with a fixed cross beam, the top of the driving track 3 is provided with a second horizontal steel plate, and the second horizontal steel plate is in bolt-up connection with the fixed cross beam of the upper bridge body.
The body of the driving track 3 is a vertical steel plate, the lower end of the vertical steel plate is fixedly connected with the first horizontal steel plate, the upper end of the vertical steel plate is fixedly connected with the second horizontal steel plate, the chain track 4 is fixedly connected with the vertical steel plate of the driving track 3 through an inner hexagon bolt, and the chain wheel 1 is meshed with the chain track 2.
The driving mechanism is provided with a box girder 11, the driving slider frame 12 is provided with a mounting hole, and the box girder 11 is arranged in the mounting hole of the driving slider frame.
The guide wheel shaft 8 comprises a long end shaft and a short end shaft, the box girder 11 is provided with a positioning hole, the long end shaft is inserted into the positioning hole of the box girder 11 and is fixedly connected with the outer cover plate 5 through a bolt, and the short end shaft is in interference fit with the vertical guide wheel 9.
The movable bridge frame 16 is provided with a preformed hole, the vertical large pin shaft 13 is inserted into the preformed hole, and the pin shaft mounting plate 14 and the movable bridge frame 16 are tightly connected through the vertical large pin shaft 13 through a bolt so that the driving mechanism is fixed on the movable bridge frame 16.
The difference between the aperture of the vertical through hole of the driving slider frame 12 and the shaft diameter of the vertical large pin shaft 13 is 3-5 mm.
The speed reducing motor 6 is a speed reducing motor with a self-locking function, and the ratio of the self-locking force to the power of the speed reducing motor 6 is 2-3.
The utility model discloses a working process and theory of operation as follows:
the driving mechanism of the utility model is arranged and fixed on the movable bridge frame 16, so as to ensure that the teeth of the chain wheel 1 are meshed with the chain track 4; two sides of a vertical steel plate of the driving track are in contact with two groups of horizontal guide wheels 10, and two sides of a first horizontal steel plate at the bottom end of the driving track 3 are in contact with two groups of vertical guide wheels 9; when the movable bridge frame 16 is opened, the speed reducing motor 6 drives the chain wheel 1 to operate, the chain wheel 1 drives the chain track 4 to perform meshing action, so that the driving slider frame 12 is driven to translate along the driving track 3, the driving slider frame 12 is provided with a vertical through hole which is in floating contact connection with the vertical large pin shaft 13, so that a working counter force of longitudinal stretching translation is provided for the movable bridge frame 16, the movable bridge frame 16 is driven to longitudinally stretch and translate, and after the movable bridge frame 16 moves to a fixed position, the speed reducing motor 6 stops operating; when the mobile bridge 16 needs to be closed, the reduction motor 6 is operated in the opposite direction.
The above is only the embodiment of the present invention, not so above only is the embodiment of the present invention, not so limiting the patent scope of the present invention, all of which utilize the equivalent structure made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, all of which are included in the same way in the patent protection scope of the present invention.
Claims (9)
1. The utility model provides a drive mechanism of bridge is opened to vertical translation formula, drive mechanism includes drive rail, chain drive, fixed crane span structure, removes crane span structure and drive slider frame, its characterized in that: the driving track is fixed on the fixed bridge frame, the chain driving device comprises a speed reducing motor with an output shaft and a chain track, the speed reducing motor is fixed on the driving slider frame, the output shaft of the speed reducing motor is provided with a chain wheel with gear teeth, the chain wheel is meshed with the chain track to drive the driving slider frame to move along the driving track, the chain track is fixed on the driving track, the upper end of the driving slider frame is hung on the driving track through a horizontal and vertical guide mechanism, the lower end of the driving slider frame is connected with the movable bridge frame through a vertical large pin shaft, the lower end of the vertical large pin shaft is provided with a pin shaft mounting plate, the pin shaft mounting plate is fastened and connected with the movable bridge frame through a bolt, the center of the driving slider frame is provided with a vertical through hole, and the vertical through hole is in lateral contact connection with the vertical large, when the fixed bridge frame generates vertical displacement, the large vertical pin shaft can float up and down in the vertical through hole, so that the driving slider frame can adapt to the structural deformation of the bridge when driving the movable bridge frame to move longitudinally;
the chain driving device comprises a horizontal guiding mechanism and a vertical guiding mechanism which are arranged on the driving slider frame, the horizontal guiding mechanism comprises two groups of supporting frames and two groups of horizontal guiding wheels which are connected with the two groups of supporting frames through pin shafts, the front group of supporting frames and the rear group of supporting frames are respectively and tightly connected with the two ends of the driving slider frame in the transverse direction, the left side and the right side of the same group of supporting frames are symmetrically arranged on the two sides of the driving track, the two groups of horizontal guiding wheels are respectively abutted against the two sides of the driving track so as to enable the left side and the right side of the movable bridge frame to move stably, the vertical guiding mechanism comprises two groups of outer cover plates, two groups of guiding wheel shafts and two groups of vertical guiding wheels, the front side and the rear side of the two groups of outer cover plates are symmetrically arranged on the two sides of the speed reducing motor, the driving rails are symmetrically arranged on two sides of the driving rail at the right side, the cross sections of the driving rails are I-shaped, a first horizontal steel plate is arranged at the bottom end of the driving rail, two groups of guide wheel shafts are symmetrically arranged on two sides of the first horizontal steel plate at the upper and lower sides, the guide wheel shafts are in interference fit with the vertical guide wheels, and the vertical guide wheels are abutted against two sides of the first horizontal steel plate so that the driving rail can move linearly up and down stably;
the driving mechanism further comprises a synchronous driving controller, and the synchronous driving controller is electrically connected with the speed reducing motor to control the speed reducing motor to rotate forwards and reversely.
2. A drive mechanism for a longitudinally translatable opening bridge according to claim 1, characterized in that: the side of the driving slider frame is provided with a supporting plate, the supporting plate is fixedly connected with the speed reducing motor through an inner hexagon bolt, the speed reducing motor is provided with an upper cover plate, the upper cover plate is inserted by an output shaft of the speed reducing motor, and the output shaft of the speed reducing motor is fixedly connected with the upper cover plate through the inner hexagon bolt so that the chain wheel is stably meshed with the chain track.
3. A drive mechanism for a longitudinally translatable opening bridge according to claim 1, characterized in that: the opening bridge is provided with an upper bridge body, the upper bridge body is provided with a fixed cross beam, the top of the driving track is provided with a second horizontal steel plate, and the second horizontal steel plate is in bolt-up connection with the fixed cross beam of the upper bridge body.
4. A drive mechanism for a longitudinally translatable opening bridge according to claim 3, wherein: the orbital body of drive is vertical steel sheet, the lower extreme of vertical steel sheet with first horizontal steel sheet fixed connection, the upper end of vertical steel sheet with second horizontal steel sheet fixed connection, the chain track through hexagon socket head cap screw with the orbital vertical steel sheet of drive carries out fastening connection, the sprocket with the chain track meshing.
5. A drive mechanism for a longitudinally translatable opening bridge according to claim 1, characterized in that: the driving mechanism is provided with a box beam, the driving slider frame is provided with a mounting hole, and the box beam is arranged in the mounting hole of the driving slider frame.
6. Drive mechanism for a longitudinally translatable opening bridge according to claim 5, characterized in that: the guide wheel shaft comprises a long end shaft and a short end shaft, the box beam is provided with a positioning hole, the long end shaft is inserted into the positioning hole of the box beam and is fixedly connected with the outer cover plate through a bolt, and the short end shaft is in interference fit with the vertical guide wheel.
7. A drive mechanism for a longitudinally translatable opening bridge according to claim 1, characterized in that: the movable bridge is provided with a preformed hole, the vertical large pin shaft is inserted into the preformed hole, and the pin shaft mounting plate and the movable bridge are fixedly connected through a bolt by the vertical large pin shaft so that the driving mechanism is fixed on the movable bridge.
8. A drive mechanism for a longitudinally translatable opening bridge according to claim 1, characterized in that: the difference between the aperture of the vertical through hole of the driving slide block frame and the shaft diameter of the vertical large pin shaft is 3-5 mm.
9. A drive mechanism for a longitudinally translatable opening bridge according to claim 1, characterized in that: the speed reducing motor is a speed reducing motor with a self-locking function, and the ratio of self-locking force to power of the speed reducing motor is 2-3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920695071.6U CN210529469U (en) | 2019-05-14 | 2019-05-14 | Driving mechanism of longitudinal translation type opening bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920695071.6U CN210529469U (en) | 2019-05-14 | 2019-05-14 | Driving mechanism of longitudinal translation type opening bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205916A (en) * | 2019-05-14 | 2019-09-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of driving mechanism of longitudinal translation formula movable bridge |
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2019
- 2019-05-14 CN CN201920695071.6U patent/CN210529469U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205916A (en) * | 2019-05-14 | 2019-09-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of driving mechanism of longitudinal translation formula movable bridge |
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