CN111775778B - Constant tension mobile contact net driving force rotating device and operation method thereof - Google Patents
Constant tension mobile contact net driving force rotating device and operation method thereof Download PDFInfo
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- CN111775778B CN111775778B CN202010637715.3A CN202010637715A CN111775778B CN 111775778 B CN111775778 B CN 111775778B CN 202010637715 A CN202010637715 A CN 202010637715A CN 111775778 B CN111775778 B CN 111775778B
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- 230000005484 gravity Effects 0.000 claims abstract description 73
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- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 4
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/26—Compensation means for variation in length
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- Mechanical Engineering (AREA)
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Abstract
The invention relates to a constant tension mobile contact net driving force rotating device which is applied to the field of mobile contact nets and comprises a rotating swing arm and a gravity compensation device, wherein one end of the rotating swing arm is provided with a carrier rope and/or a contact line; the other end of the rotating swing arm is arranged on the upright post, and the rotating swing arm can rotate around the upright post; the gravity of the gravity compensation device acts on the carrier cable and/or the contact line. The other end of the rotary swing arm is used as a round point, the length of the rotary swing arm is used as a radius, and the rotary swing arm rotates in the circumferential direction, so that the carrier rope and/or the contact line are driven to realize translation. The invention has the advantages of stable and reliable structure, convenient operation, more uniform stress of the carrier cable, short construction period, little influence by factors such as weather, temperature difference and the like, wide application in various severe environments, long service life, improvement on the basis of the existing contact network, convenient installation and maintenance, similar structure of the fixed contact network and the like.
Description
Technical Field
The invention belongs to the field of electrified railway mobile contact networks, and particularly relates to a driving force rotating device applied to a mobile contact network and an operation method thereof.
Background
Along with the propulsion of electrified traction of the railway, electric locomotives are adopted to replace diesel locomotives in the transportation of the Chinese railway trunk line. The electrification is realized on a cargo loading and unloading line or in-warehouse maintenance, a rigid movable contact net is adopted, the structure of the existing rigid movable contact net system is complex, the installation is inconvenient, the requirement on the use condition of the line is high, the structural reliability is poor, if the movable contact net is on one side of an integral rail of a movable section, a motor is used for dragging a carrier cable to enable the contact line to move to one side of the rail, and the line mode has the conditions of insufficient dragging power and unstable operation for the movable contact net on a long distance; in the other mode, the motor or the electric push rod is used for driving the rotating support to rotate so as to drive the moving section of the whole moving contact net to move to one side of the rail, and in the mode, the bus bar is integrally arranged at the tail end of the rotating support, so that the driving synchronism of the motor or the electric push rod is difficult to control.
In the prior art, a heavy anchor arm is used in a flexible contact net assembly, a steel wire rope is connected to the heavy anchor arm, one end of the steel wire rope is connected to a weight capable of lifting up and down, the other end of the steel wire rope is connected to a motor through a pulley block, and the steel wire rope is pulled to stretch to realize that the contact net moves to one side of a rail or moves to the upper side of the rail by utilizing electric pulling, so that the defects of insufficient dragging force, unstable operation and the like exist for a movable contact net with a whole anchor section and a long distance;
in addition, the horizontal movement of the contact line is realized by using a lifting manner of the balance weight in the existing flexible mobile contact net, the length of the balance weight string per se is reserved when the value of the compensator b is about 3.7 meters at the highest in a single balance weight string, the lifting space of the balance weight string is reserved, the height of the contact line in the existing railway is about 6 meters, and the problem of wire body extension or shortening caused by expansion and contraction of the carrier cable and the contact line is considered, wherein the situation that the bottom surface of the lowest balance weight of the balance weight string abuts against the ground and the traction tension to the carrier cable and the contact line is lost can occur.
Disclosure of Invention
Through continuous research and practice of the applicant, in the field of mobile contact networks, a solution for realizing switching of two states of opening and closing of a flexible contact network under the condition that a weight is motionless is provided, wherein the weight is motionless relative to the condition that the weight is required to lift up and down in the process of translating a contact line in the traditional mobile contact network. In particular to a weight which can not lift up and down in the vertical direction in the process of translating a carrier rope and/or a contact line. The switching of the two states of the flexible contact net is realized under the condition that the weight is not moved, which is an innovation in the industry, and the technical difficulty in the background art is effectively solved.
In order to achieve the above object, according to one aspect of the present invention, there is provided a constant tension moving contact net driving force rotating device, which is applied to the field of moving contact nets, and comprises a rotating swing arm and a gravity compensation device, wherein
One end of the rotating swing arm is provided with a carrier rope and/or a contact line; the other end of the rotating swing arm is arranged on the upright post, and the rotating swing arm can rotate around the upright post;
the gravity of the gravity compensation device acts on the carrier rope and/or the contact line, and the pulling force direction provided by the gravity acting force points to the other end of the rotating swing arm.
Further, the rotating swing arm rotates to drive the carrier rope and/or the contact line to be positioned at a first station or a second station;
the first station state is: the carrier cable and/or contact line is located above the rail;
the second station state is: the carrier line and/or contact line is located to one side of the rail.
Further, the gravity compensation device comprises a weight, the weight is arranged at the other end of the rotating swing arm, and the pull rope extends from the other end of the rotating swing arm to one end of the rotating swing arm along the length direction of the rotating swing arm, so that the gravity of the gravity compensation device acts on the carrier rope and/or the contact line.
Further, a force transmitting structure is also included for acting the gravity of the gravity compensation device on the carrier cable and/or the contact line.
Further, the device further comprises an insulator, and an insulator which plays a role of electric isolation is arranged between the carrier rope and/or the contact line and the acting force transmission structure.
Further, the acting force transmission structure comprises a coaxial rotary disc, and the upper rotary disc and the lower rotary disc are coaxially arranged;
the coaxial turntable is arranged at one end of the rotating swing arm, and the gravity of the gravity compensation device acts on the lower turntable; rotation of the coaxial upper turntable can tighten or loosen the carrier cable and/or contact line.
Further, the diameter of the lower turntable is larger than or equal to that of the upper turntable.
Further, the carrier rope and/or the contact line is/are clockwise wound on the upper turntable, and the pull rope is/are anticlockwise wound on the lower turntable; or the carrier rope and/or the contact line is/are wound around the upper turntable anticlockwise, and the pull rope is/are wound around the lower turntable clockwise.
Further, the other end of the rotating swing arm is used as a round point, the length of the rotating swing arm is used as a radius, and the rotating swing arm rotates in the circumferential direction, so that the carrier rope and/or the contact line are driven to realize translation.
Further, the device also comprises a driving device for driving the rotating swing arm to rotate in the circumferential direction.
Further, the driving device adopts any one of the following:
the first way is: the rotating swing arm is arranged on the upright post through a rotating shaft, and the driving device comprises a rotating motor which is used for driving the rotating shaft to rotate so as to drive the rotating swing arm to rotate;
the second mode is as follows: the driving device comprises an electric push rod, and the electric push rod is used for pushing the rotating swing arm to rotate;
the third way is: the driving device comprises a hydraulic push rod, and the hydraulic push rod is used for pushing the rotating swing arm to rotate; or alternatively
The fourth mode is: the rotating swing arm is arranged on the upright post through a rotating shaft, the driving device comprises an external pulling motor, and the rotating swing arm is pulled to rotate through the pulling motor.
The invention also provides an operation method of the driving force rotating device of the constant-tension mobile contact net, which comprises the following specific operation steps:
the gravity compensation device is arranged at the other end of the rotating swing arm, and the pull rope extends from the other end of the rotating swing arm to one end of the rotating swing arm along the length direction of the rotating swing arm, so that the gravity of the gravity compensation device acts on the carrier rope and/or the contact line;
the rotating swing arm is driven to rotate to make round-trip arc rotation, so that the carrier rope and/or the contact line are driven to move from the upper side of the rail to one side of the rail or return to the upper side of the rail from one side of the rail, and the carrier rope and/or the contact line are driven to translate.
Further, the method also comprises a force transmission structure, wherein the force transmission structure is used for enabling the gravity of the gravity compensation device to act on the carrier rope and/or the contact line; the acting force transmission structure comprises a coaxial rotary disc, and the upper rotary disc and the lower rotary disc are coaxially arranged; the coaxial turntable is arranged at one end of the rotating swing arm, and the gravity of the gravity compensation device acts on the lower turntable; rotation of the coaxial upper turntable can tighten or loosen the carrier cable and/or contact line.
By adopting the technical scheme, the invention has at least the following beneficial effects:
1) The invention provides another novel operation mode, namely, the two states of the flexible contact net are switched under the condition that the weight is not moved, so that the weight of the weight can be increased, and the flexible contact net is a novel innovation when the weight is applied to the contact net with longer distance.
2) The invention provides the switching of the two states of the flexible contact net under the condition that the weight is not moved, overcomes the defect that in the prior art, the contact net moves to one side of a rail or moves above the rail by utilizing the electric pulling of the wire rope, and avoids the condition that the traction tension to a carrier rope and a contact line is lost due to the fact that the bottom surface of the lowest weight of the weight string is abutted against the ground.
3) The invention has stable and reliable structure and convenient operation, and has low cost and low failure rate compared with the existing rigid contact net; the technical scheme provided by the invention has the advantages of more uniform stress of the carrier cable, short construction period, small influence by factors such as weather, temperature difference and the like, wide application in various severe environments, long service life, improvement on the basis of the existing contact network, convenience in installation and maintenance, similar structure of the fixed contact network and the like.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a driving force rotating device of a mobile contact network according to the present invention;
FIG. 2 is a schematic diagram of a driving force rotating device of a mobile contact network according to a second embodiment of the present invention;
FIG. 3 is a schematic view of an embodiment of a driving force rotation device of a mobile contact network according to a rotation direction of the present invention;
fig. 4 is a second schematic diagram of a rotation direction embodiment of the driving force rotation device of the mobile contact network of the present invention;
FIG. 5 is a schematic diagram of a coaxial turntable of the driving force rotating device of the mobile contact system according to the present invention;
FIG. 6 is a second schematic diagram of the coaxial turntable of the driving force rotating device of the mobile contact system of the present invention;
fig. 7 is a top view of a driving device of a driving force rotating device of a novel mobile contact network according to an embodiment of the present invention;
fig. 8 is a top view of a driving device of the driving force rotating device of the novel mobile contact network according to the second embodiment of the present invention;
FIG. 9 is a third schematic diagram of a driving force rotating device of the mobile contact network according to the present invention;
fig. 10 is a flow chart of a method of operation of the present invention.
In the figure: 1. rotating the swing arm; 2. a gravity compensation device; 3. carrier wires and/or contact wires; 4. a pull rope; 5. a rotating shaft; 6. a column; 7. a rotating motor; 8. an upper turntable; 9. a lower turntable; 10. weight; 11. an electric push rod; 12a, right side pulling motor; 12b, left side pull motor.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus consistent with aspects of the invention as detailed in the accompanying claims.
As shown in fig. 1, the embodiment provides a constant tension mobile contact net driving force rotating device, which is applied to the field of mobile contact nets and comprises a rotating swing arm 1 and a gravity compensation device 2, wherein one end of the rotating swing arm 1 is provided with a carrier rope and/or a contact line; the other end of the rotating swing arm 1 is arranged on the upright post 6, and the rotating swing arm 1 can rotate around the upright post 6;
the gravity of the gravity compensation device 2 acts on the carrier cable and/or the contact line; since the gravity compensation device 2 is arranged at the other end of the rotary swing arm 1; the direction of the pulling force provided by the gravity force is directed to the other end of the rotary swing arm 1.
As a preferred embodiment, in the driving force rotating device for a constant tension mobile catenary provided in this embodiment, fig. 3 and 4 show the setting position of the gravity compensation device 2, which includes a weight 10, the weight 10 is specifically set at the other end of the rotating swing arm 1 in a hanging manner by a pull rope 4, the pull rope 4 extends from the other end of the rotating swing arm 1 to one end of the rotating swing arm 1 along the length direction of the rotating swing arm 1, and the pull rope 4 rotates together with the rotating swing arm 1, so that the gravity of the gravity compensation device 2 acts on a carrier rope and/or a contact line.
In this embodiment, the weight 10 is disposed at the other end of the rotating swing arm 1, and in the process of rotating the rotating swing arm 1, the height of the weight 10 is kept unchanged, that is, the weight 10 does not rise and fall in the conventional sense, and a supplementary explanation is made about the manner of disposing the weight 10, which further explains the following claims:
the weight 10 is shown in fig. 1 to hang below the other end of the rotating swing arm 1, and is located at the same side of the upright post 6 as the rotating shaft 5 of the rotating swing arm 1, and in consideration of the weight 10 and the actual working condition, a preferable mode can be provided as follows: as shown in fig. 2, a through hole for the pull rope 4 to pass through is arranged on the upright post 6, and the upright post 6 is used for bearing the weight of the weight 10. I.e. the weight 10 is arranged on the other side of the upright post 6. Although only two arrangements of the weight 10 are described, other arrangements, such as a new upright 6 for hanging the weight 10, are also possible, and the key point is that the swing arm 1 is in a stationary state or a rotating state, the pull rope 4 at the swing arm 1 rotates together with the swing arm 1, and the direction of the pull force provided by the gravity force is directed to the swing dot of the swing arm 1.
The traditional mobile contact net is divided into a rigid mobile contact net and a flexible mobile contact net, wherein the rigid mobile contact net is generally formed by combining a plurality of sections of section contact nets, an electric connecting device is adopted at a busbar position where the section contact net is contacted with the section, and a rotating motor or an electric push rod is used for realizing switching of the opening and closing states of the whole contact net, so that the whole structure and the electric control are complex, the failure rate is high, and the installation and maintenance cost is high;
in the flexible contact net in the related art, a weight is arranged at one end of the flexible contact net, a pulling motor is arranged at the other end of the flexible contact net to drag the weight to lift so as to realize switching of the opening and closing states of the whole contact net, for example, the weight string caused by thermal expansion and cold contraction is propped against the ground, the dragging force is insufficient, and the whole contact net is generally not more than 800 meters.
The driving force rotating device of the constant-tension mobile contact net can realize the switching of the two states of opening and closing of the flexible contact net under the condition that the weight 10 is not moved, wherein the non-movement means that the weight 10 is not moved in the switching process of the two states of opening and closing of the flexible contact net;
the existing weight arranged at one end of the carrier cable is prolonged or shortened under different temperatures due to the characteristics of thermal expansion and cold contraction of the carrier cable, when the wire body is prolonged, the falling weight of the hanging weight is lowered to a height, the existing opening and closing mode is required to lift or lower the weight, and the situation that the weight string touches the ground due to insufficient falling space exists in the falling process of the weight string. Another problem is that when the temperature in summer rises, the weight is lowered due to the fact that the bearing cable is heated by the heat line body in an extending mode, the weight is required to be monitored along the railway continuously by manpower, or the height of the weight is required to be adjusted manually in time, power failure maintenance is required, maintenance cost is increased, and the efficiency of train loading and unloading operation is affected. Therefore, if the weight is capable of solving the problem that the weight is not moving in the switching process of the two states of the flexible contact net, the weight has a plurality of beneficial effects.
As shown in fig. 3 and fig. 4, in this embodiment, the rotating swing arm 1 rotates to drive the carrier cable and/or the contact line to be at the first station or the second station; the first station state is: the carrier cable and/or the contact line are/is positioned above the rail (in a combined state, the pantograph of the train lifts up to take electricity from the contact line), and the state is that the train enters or exits from a station; the second station state is: the carrier line and/or contact line is located to one side of the rail (open condition, such as when the train is parked in a loading or unloading or service condition).
The swing arm 1 is turned to turn a rail side, there are two ways of turning a rail side clockwise (to the left) or counterclockwise (to the right), and the following descriptions are given respectively:
referring to fig. 1 and 3, the swing arm 1 is turned above the rail, at this time, fig. 3 shows that an angle α1 between a force direction A1' of the pull rope 4 on the swing arm 1 and a force direction A1 of the carrier rope and/or the contact line 3 is 90 °, where 90 ° is only an example, and the standard that the carrier rope and/or the contact line is located above the rail is: the pantograph of the train can be lifted to take electricity from the contact wire. And not as a limitation on the claims.
The rotary swing arm 1 is driven to rotate to one side of the rail, and at the moment, an included angle alpha 3 between a stress direction A3' of the pull rope 4 on the rotary swing arm 1 and a stress direction A3 of the carrier rope and/or the contact line is 0 degrees; at this time, the stress direction of the pull rope 4 coincides with the stress direction of the carrier rope and/or the contact line, and the movement to one side of the rail is completed. The 0 ° is only an example illustration here, and the standard for the carrier line and/or contact line to be located to the side of the rail is: only one side of the rail is rotated, the space above the rail is vacated, and the train can be conveniently stopped, assembled and disassembled or overhauled, and the rail can approach 0 degrees and can be rotated for some time.
In this embodiment, the swing arm 1 is located above the rail and is in a closed state, when the swing arm 11 is turned clockwise (as shown by arrow direction in fig. 3) to a state that one side of the rail is located at the left side of the gravity compensation device, the included angle between the stress direction of the pull rope 4 on the swing arm 1 and the stress direction of the carrier rope and/or the contact line is changed from α1 (about 90 °) to α3 (about 0 °);
a2, A2' and the angle alpha 2 of the stress direction in the figure 3 show the stress schematic diagram in the rotation process; when the swing arm 1 needs to return to the upper side of the rail from one side of the rail, the included angle between the stress direction of the pull rope 4 on the swing arm 1 and the stress direction of the carrier rope and/or the contact line is changed from about 0 degrees to about 90 degrees.
From the above rotation principle, the length of the rotation swing arm 1 is taken as a radius to perform round-trip arc rotation, so that the carrier cable and/or the contact line are driven to move from above the rail to one side of the rail, or the carrier cable and/or the contact line are driven to return from one side of the rail to above the rail. The stay rope 4 only has the change of the included angle in the stressed direction in the whole rotation process and does not generate displacement, so the height of the weight 10 is kept unchanged, and the principle that the weight 10 is not moved in the switching process of the two states of the flexible contact net is described.
In the flexible contact net, the weight is an indispensable component for adjusting the tension of the contact line and the carrier cable, in this embodiment, the other end of the rotating swing arm is a round point, the length of the rotating swing arm is a radius, and the gravity of the gravity compensation device acts on the carrier cable and/or the contact line; the direction of the pulling force provided by the gravity force points to the swing round point of the rotating swing arm 1; the rotating swing arm 1 rotates in the circumferential direction, so that the carrier rope and/or the contact line are driven to translate.
The above figure 3 and the corresponding text refer to the situation where the swing arm 1 is rotated clockwise.
According to the actual situation of the site, the rotary swing arm 1 can be set to rotate anticlockwise to realize switching of the opening and closing states.
Referring to fig. 1 and 4, the swing arm 1 is driven to rotate above the rail, and at this time, an included angle β1 between a stress direction B1' of the pull rope 4 on the swing arm 1 and a stress direction B1 of the carrier rope and/or the contact line 3 is about 90 °; the swing arm 1 is driven to rotate to one side of the rail, and at this time, an included angle beta 3 between a stress direction B3' of the pull rope 4 on the swing arm 1 and a stress direction B3 of the carrier rope and/or the contact line 3 is about 180 degrees; at this time, the stress direction of the pull rope 4 is opposite to the stress direction of the carrier rope and/or the contact line, and the movement to one side of the rail is completed.
The rotating swing arm 1 is positioned above the rail in a closing state, when the rotating swing arm 1 anticlockwise (as shown by arrow direction in fig. 4) rotates to a state that one side edge of the rail is positioned on the right side of the gravity compensation device, the included angle between the stress direction of the pull rope 4 on the rotating swing arm 1 and the stress direction of the carrier rope and/or the contact line is changed from beta 1 (about 90 degrees) to beta 3 (about 180 degrees);
b2, B2' and the angle beta 2 of the stress direction in FIG. 4 show the stress schematic diagram in the rotation process; when the swing arm 1 needs to return to the upper side of the rail from one side of the rail, the included angle between the stress direction of the pull rope 4 on the swing arm 1 and the stress direction of the carrier rope and/or the contact line is changed from about 180 degrees to about 90 degrees during return. The stay rope 4 only has the change of the included angle in the stressed direction in the whole rotation process and does not generate displacement, so the height of the weight 10 is kept unchanged,
in this embodiment, the force transmission structure is used to apply the gravity of the gravity compensation device to the carrier cable and/or the contact line. The acting force transmission structure comprises a coaxial turntable, and the upper turntable 8 and the lower turntable 9 are coaxially arranged;
the coaxial turntable is arranged at one end of the rotary swing arm 1, and the gravity of the gravity compensation device acts on the lower turntable 9; rotation of the coaxial upper turntable 8 can tighten or loosen the carrier cable and/or contact line.
In this embodiment, two winding modes and descriptions of the operating principle are provided:
as shown in fig. 5, the carrier rope and/or contact line is wound anticlockwise in the upper turntable 8, and the pull rope 4 of the weight 10 is wound clockwise in the lower turntable 9.
Under the balanced condition, the tensile force F1 of the carrier rope and/or the contact line on the upper rotary table 8 is equal to the tensile force F2 of the weight 10 acting on the lower rotary table 9 by gravity, and at the moment, the shared shaft is static, so that the upper rotary table 8 and the lower rotary table 9 do not rotate.
When the ambient temperature rises, the carrier rope and/or the contact line is/are extended and lengthened by the heated expansion line body, the lower rotary table 9 is pulled by the weight 10 to rotate clockwise (the rotary table rotating direction is marked in fig. 5), the balance is broken, the upper rotary table 8 rotates clockwise to tighten the carrier rope and/or the contact line, the coaxial lower rotary table 9 rotates clockwise, and the weight 10 descends.
When the ambient temperature is reduced, the length of the carrier rope and/or the contact line is contracted by the cold wire body, the balance is broken, the upper rotary table 8 rotates anticlockwise for paying off, the coaxial lower rotary table 9 rotates anticlockwise, and the weight 10 is lifted.
The process is a dynamic adjustment process according to the ambient temperature, and relatively obvious changes can be seen only in spring, summer and autumn and winter; at any moment when the state of the rotary swing arm 1 is switched, the weight 10 is kept unchanged in height.
As shown in fig. 6, the carrier rope and/or contact line is wound clockwise in the upper rotary table 8, and the pull rope 4 of the weight 10 is needled in the lower rotary table 9 in the reverse direction.
Under the balanced condition, the tensile force F1 'of the carrier rope and/or the contact line on the upper rotary table 8 is equal to the tensile force F2' of the weight 10 on the lower rotary table 9 under the action of gravity, and at the moment, the shared shaft is static, so that the upper rotary table 8 and the lower rotary table 9 do not rotate.
When the ambient temperature rises, the carrier rope and/or the contact line is/are extended and lengthened by the heated expansion line body, the lower rotary table 9 is pulled by the balance weight 10 to rotate anticlockwise (the rotary table rotating direction is marked in fig. 6), the balance is broken, and the upper rotary table 8 tightens the carrier rope and/or the contact line anticlockwise;
when the ambient temperature is reduced, the length of the carrier rope and/or the contact line is contracted by the cold wire body, the balance is broken, the upper rotary table 8 rotates clockwise for paying off, the coaxial lower rotary table 9 rotates clockwise, and the weight 10 is lifted.
As a preferred embodiment, the diameter of the lower turntable 9 is equal to or greater than the diameter of the upper turntable 8 in practical use.
The invention also comprises a driving device for driving the rotary swing arm 1 to rotate in the circumferential direction. The present embodiment provides the following four driving modes:
the first way is: as shown in fig. 1, the rotating swing arm 1 is mounted on the upright post 6 through a rotating shaft 5, the driving device comprises a rotating motor 7, and the rotating motor 7 is used for driving the rotating shaft 5 to rotate, so as to drive the rotating swing arm 1 to rotate;
the second mode is as follows: as shown in fig. 7, the rotating swing arm 1 is mounted on the upright post 6 through a rotating shaft 5, the driving device comprises an electric push rod 11, and the electric push rod 11 with a bidirectional acting function is utilized to push the rotating swing arm 1 to rotate;
the third way is: the rotating swing arm 1 is arranged on the upright post 6 through a rotating shaft 5, and the driving device comprises a hydraulic push rod which is used for pushing the rotating swing arm 1 to rotate; the hydraulic push rod is installed in a similar manner to the electric push rod 11, and reference is made to fig. 7.
The fourth mode is: as shown in fig. 8, the rotating swing arm 1 is mounted on the upright post 6 through a rotating shaft 5, and the driving device comprises an external pulling motor, and the rotating swing arm 1 is pulled to rotate through the pulling motor. For example: the pulling motor 12a rotates forward to take up the wire, the rotating swing arm 1 rotates to the right, and the pulling motor 12b pays off in the process; the pulling motor 12b rotates forward to take up the wire, the rotating swing arm 1 rotates to the left, and the pulling motor 12a pays off the wire in the process.
In addition, it should be noted that: it should be noted that, in this embodiment, the direction of the pulling force provided by the gravity force points to the other end of the rotating swing arm 1, as shown in fig. 9, another installation mode of the coaxial turntable is shown, that is, the upper turntable 21 is located on the upper end surface of the rotating swing arm 1, the lower turntable 22 is located on the lower end surface of the rotating swing arm, and the pull rope 4 is routed from the lower side of the rotating swing arm. The direction of the pulling force provided by the gravity force is directed to the other end of the swing arm 1, and the most preferable mode is directed to the swing dot of the swing arm. The weight is used for adjusting the tension of the contact line and the carrier rope through the acting force transmission structure. Therefore, the direction of the pulling force provided by the gravity force is directed to the other end of the rotating swing arm 1, and the pulling rope can also have a certain included angle with the horizontally arranged rotating swing arm upwards or downwards, preferably (between 0 and 25 degrees), and does not necessarily need to be directed to the swing round point of the rotating swing arm.
The driving force rotating device of the constant-tension mobile contact net is applied to the two ends of the mobile contact net, and in the embodiment, the tail ends of the carrier ropes and/or the contact lines are required to be fixed on the upper turntable.
As shown in fig. 10, an operation method of a driving force rotating device of a constant tension mobile contact net is provided, and specific operation steps are as follows:
s1, arranging a gravity compensation device at the other end of the rotating swing arm, and enabling a pull rope to extend from the other end of the rotating swing arm to one end of the rotating swing arm along the length direction of the rotating swing arm so as to enable gravity of the gravity compensation device to act on a carrier rope and/or a contact line;
and S2, driving the rotating swing arm to rotate to make round-trip arc rotation, so as to drive the carrier rope and/or the contact line to move from above the rail to one side of the rail or return to above the rail from one side of the rail, and further drive the carrier rope and/or the contact line to realize translation.
The method also comprises a force transmission structure, wherein the force transmission structure is used for enabling the gravity of the gravity compensation device to act on the carrier rope and/or the contact line; the acting force transmission structure comprises a coaxial rotary disc, and the upper rotary disc and the lower rotary disc are coaxially arranged; the coaxial turntable is arranged at one end of the rotating swing arm, and the gravity of the gravity compensation device acts on the lower turntable; rotation of the coaxial upper turntable can tighten or loosen the carrier cable and/or contact line.
It should be noted that, for a specific rotation embodiment, reference is made to the drawings of fig. 3 to 6 and the corresponding text. The driving manner of the rotary swing arm 1 in the present method can be seen from the four driving manners in the above-described embodiment. The invention provides a method for realizing switching of two states of a flexible contact net under the condition that a weight is not moved, which can be effectively applied to the existing flexible contact net, wherein the existing contact net generally adopts a single-side weight manner, on one hand, the maximum weight borne by the single-side weight is limited, the maximum length of the corresponding contact net is relatively fixed, the double-side weight manner is adopted, the length of the existing contact net is correspondingly doubled, the requirement of ten-thousand-ton-column loading and unloading operation can be effectively met, the conventional ten-thousand-ton-column loading and unloading operation is adopted (such as disassembly loading), and the straight-through type opening and closing manner in the contact net of the device and the operation method can effectively meet the requirement of ten-thousand-ton-column loading and unloading operation (without changing a machine head or disassembling). The technical scheme provided by the invention has the advantages of more uniform stress of the carrier cable, short construction period, small influence by factors such as weather, temperature difference and the like, wide application in various severe environments, long service life, improvement on the basis of the existing contact network, convenience in installation and maintenance, similar structure of the fixed contact network and the like.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. The utility model provides a constant tension mobile contact net driving force rotating device, uses in mobile contact net field, its characterized in that: the driving force rotating device is arranged at one end of the mobile contact net and comprises a rotating swing arm and a gravity compensation device, wherein a carrier rope and/or a contact line are arranged at one end of the rotating swing arm; the other end of the rotating swing arm is arranged on the upright post, and the rotating swing arm can rotate around the upright post;
the gravity of the gravity compensation device acts on the carrier rope and/or the contact line; the direction of the pulling force provided by the gravity force points to the other end of the rotating swing arm;
the gravity compensation device comprises a balance weight which is arranged at the other end of the rotating swing arm, and a pull rope extends from the other end of the rotating swing arm to one end of the rotating swing arm along the length direction of the rotating swing arm, so that the gravity of the gravity compensation device acts on a carrier rope and/or a contact line;
one end of the rotating swing arm is provided with an acting force transmission structure, and the acting force transmission structure is used for enabling gravity of the gravity compensation device to act on the acting force transmission structure; the gravity of the gravity compensation device acts on a carrier cable and/or a contact line in the mobile contact net through the acting force transmission structure;
and under the condition that the weight is not moved, the switching of the two states of the flexible contact net is realized.
2. The constant tension mobile catenary driving force rotating apparatus according to claim 1, wherein: the rotating swing arm rotates to drive the carrier rope and/or the contact line to be positioned at a first station or a second station;
the first station state is: the carrier cable and/or contact line is located above the rail;
the second station state is: the carrier line and/or contact line is located to one side of the rail.
3. The constant tension mobile catenary driving force rotating apparatus according to claim 2, wherein: the acting force transmission structure comprises a coaxial rotary disc, and the upper rotary disc and the lower rotary disc are coaxially arranged;
the coaxial turntable is arranged at one end of the rotating swing arm, and the gravity of the gravity compensation device acts on the lower turntable; rotation of the coaxial upper turntable can tighten or loosen the carrier cable and/or contact line.
4. The constant tension mobile catenary driving force rotating apparatus according to claim 3, wherein:
the carrier rope and/or the contact line is/are clockwise wound on the upper turntable, and the pull rope is/are anticlockwise wound on the lower turntable; or alternatively
The carrier rope and/or the contact line is/are wound around the upper turntable anticlockwise, and the pull rope is/are wound around the lower turntable clockwise.
5. The constant tension mobile catenary driving force rotating apparatus according to any one of claims 1 to 4, wherein: the other end of the rotary swing arm is used as a round point, the length of the rotary swing arm is used as a radius, and the rotary swing arm rotates in the circumferential direction, so that the carrier rope and/or the contact line are driven to realize translation.
6. The constant tension mobile catenary driving force rotating apparatus according to claim 5, wherein: the driving device is used for driving the rotating swing arm to rotate in the circumferential direction;
the driving device adopts any one of the following components:
the first way is: the rotating swing arm is arranged on the upright post through a rotating shaft, and the driving device comprises a rotating motor which is used for driving the rotating shaft to rotate so as to drive the rotating swing arm to rotate; or alternatively
The second mode is as follows: the driving device comprises an electric push rod, and the electric push rod is used for pushing the rotating swing arm to rotate; or alternatively
The third way is: the driving device comprises a hydraulic push rod, and the hydraulic push rod is used for pushing the rotating swing arm to rotate; or alternatively
The fourth mode is: the rotating swing arm is arranged on the upright post through a rotating shaft, the driving device comprises an external pulling motor, and the rotating swing arm is pulled to rotate through the pulling motor.
7. The operation method of the driving force rotating device of the constant-tension mobile contact net comprises the following steps: the method is characterized in that: the operation method uses the constant tension mobile contact net driving force rotating device according to any one of claims 1 to 6, and comprises the following specific operation steps:
the gravity compensation device is arranged at the other end of the rotating swing arm, and the pull rope extends from the other end of the rotating swing arm to one end of the rotating swing arm along the length direction of the rotating swing arm, so that the gravity of the gravity compensation device acts on the carrier rope and/or the contact line;
the rotating swing arm is driven to rotate to make round-trip arc rotation, so that the carrier rope and/or the contact line are driven to move from above the rail to one side of the rail or return from one side of the rail to above the rail;
and under the condition that the weight is not moved, the switching of the two states of the flexible contact net is realized.
8. The operation method of the constant tension mobile catenary driving force rotating device according to claim 7, wherein: the gravity compensation device further comprises a force transmission structure, wherein the force transmission structure is used for enabling gravity of the gravity compensation device to act on the carrier rope and/or the contact line; the acting force transmission structure comprises a coaxial rotary disc, and the upper rotary disc and the lower rotary disc are coaxially arranged; the coaxial turntable is arranged at one end of the rotating swing arm, and the gravity of the gravity compensation device acts on the lower turntable; rotation of the coaxial upper turntable can tighten or loosen the carrier cable and/or contact line.
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| CN112793476B (en) * | 2021-02-22 | 2023-12-12 | 中铁二十四局集团上海电务电化有限公司 | Contact net spring tensioning compensation device and use method thereof |
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