CN111799623B - Current collector for sliding contact line, construction elevator and power supply system - Google Patents
Current collector for sliding contact line, construction elevator and power supply system Download PDFInfo
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- CN111799623B CN111799623B CN202010765130.XA CN202010765130A CN111799623B CN 111799623 B CN111799623 B CN 111799623B CN 202010765130 A CN202010765130 A CN 202010765130A CN 111799623 B CN111799623 B CN 111799623B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R41/00—Non-rotary current collectors for maintaining contact between moving and stationary parts of an electric circuit
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Abstract
The invention discloses a current collector for a sliding contact line, a construction elevator and a power supply system. Wherein, this current collector for wiping line includes: a first current collector comprising: the first electric brush and the second electric brush are used for being mounted on a first mounting bracket on first mobile equipment and being in contact with a conductive contact surface of a power transmission guide rail, and the first pressing mechanism and the second pressing mechanism are used for pressing the first electric brush and the second electric brush; the first mounting bracket is connected with the first electric brush through the first pressing mechanism and connected with the second electric brush through the second pressing mechanism; a second current collector comprising: the second mounting bracket is connected with the third electric brush through the tensioning mechanism; wherein a guide mechanism for guiding the first brush or the second brush across the second collector is provided on the second mounting bracket. The embodiment of the invention can support two mobile devices to share the power transmission guide rail, and the relative spatial positions of the two mobile devices can be changed.
Description
Technical Field
The invention relates to the field of power supply, in particular to a current collector for a sliding contact line, a construction elevator and a power supply system.
Background
In the field of power supply, devices are often powered by cables. However, for the mobile device, since the mobile device needs to change its position continuously, the mobile device needs to obtain power at any time at each different position, otherwise, the mobile device cannot move continuously. The defects of easy damage, difficult maintenance and the like exist in the power supply by adopting the cable, and an Isolated conductor rail (ICR for short) is produced. The trolley line comprises a power transmission guide rail and a current collector, wherein the power transmission guide rail is laid in parallel along the running track of the mobile equipment, the current collector is arranged on the mobile equipment and used for taking power from the power transmission guide rail, the current collector runs synchronously with the mobile equipment, and obtains power from the power transmission guide rail at any time and provides the power for the mobile equipment so that the mobile equipment can continue to move.
Although the existing trolley line can support power supply of a plurality of mobile devices on a single power transmission guide rail so as to simplify field wiring of the plurality of mobile devices, the relative position relationship between the mobile devices cannot be exchanged. In practical applications, however, the moving tracks of the mobile devices may be different due to different moving requirements among the mobile devices; in addition, the time length of pause required by the mobile equipment may be different according to respective moving requirements, and the requirement of exchanging the relative position of the space between the mobile equipment can also be caused, so that a power transmission guide rail has to be additionally laid, the construction cost is increased, and the cost is increased.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a current collector for a trolley line, a construction hoist and a power supply system, and aims to effectively reduce the laying cost of a power transmission guide rail of the trolley line.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a current collector for a trolley line, which is used for supplying power to a first mobile device and a second mobile device sharing a power transmission guide rail, and comprises:
a first current collector comprising: the first electric brush and the second electric brush are used for being mounted on the first mobile equipment, and are used for being in contact with the conductive contact surface of the power transmission guide rail; the first mounting bracket is connected with the first electric brush through the first pressing mechanism and is connected with the second electric brush through the second pressing mechanism;
a second current collector comprising: a second mounting bracket for mounting to the second mobile device, a tensioning mechanism, and a third brush for contacting the conductive contact surface of the power transmission rail, the second mounting bracket being coupled to the third brush via the tensioning mechanism;
wherein a guide mechanism for guiding the first brush or the second brush over the second collector is provided on the second mounting bracket.
In some embodiments, the guide mechanism comprises:
and the guide arc-shaped surface is used for guiding the first electric brush or the second electric brush to firstly lift to the upper part of the second mounting bracket along the conductive contact surface of the power transmission guide rail and then fall back to the conductive contact surface of the power transmission guide rail.
In some embodiments, the guide mechanism further comprises:
the guide side edges are arranged on two sides of the width direction of the guide arc-shaped surface and matched with the guide arc-shaped surface to form a guide space for guiding the first electric brush or the second electric brush.
In some embodiments, the first compression mechanism comprises:
one end of the first double-link mechanism is connected with the mounting seat of the first brush, the other end of the first double-link mechanism is connected with the first mounting bracket, and the mounting seat of the first brush, the first double-link mechanism and the first mounting bracket form a parallelogram mechanism;
and the first pressing device is arranged on the mounting seat of the first electric brush and is used for applying pressure towards the conductive contact surface to the first electric brush.
In some embodiments, the second compression mechanism comprises:
one end of the second double-link mechanism is connected with the mounting seat of the second brush, the other end of the second double-link mechanism is connected with the second mounting bracket, and the mounting seat of the second brush, the second double-link mechanism and the second mounting bracket form a parallelogram mechanism;
and the second pressing device is arranged on the mounting seat of the second electric brush and is used for applying pressure towards the conductive contact surface to the second electric brush.
In some embodiments, the guide arc face is an electrical conductor; or, the guiding arc-shaped surface is an insulator, and the distance between the first electric brush and the second electric brush is greater than the length of the guiding arc-shaped surface projected onto the power transmission guide rail.
In some embodiments, at least two power supply electrodes are formed on the power transmission rail, at least one of the power supply electrodes is located on the conductive contact surface, and each of the first brush, the second brush, and the third brush is provided with a contact portion that is in contact with each of the power supply electrodes.
The embodiment of the invention also provides a power supply system of the construction elevator, which comprises:
the power transmission guide rail is arranged on the upright post of the construction hoist;
according to the collector for the trolley line, the first suspension cage and the second suspension cage on two sides of the upright post of the construction hoist share the power transmission guide rail through the collector for the trolley line.
In some embodiments, the power supply system further comprises:
the rectifying circuit is fixedly arranged relative to the ground and used for outputting a direct-current power supply to the power transmission guide rail;
the first speed regulation inverter is arranged on the first suspension cage and used for supplying power to a first driving motor of the first suspension cage based on a direct current power supply on the power transmission guide rail;
and the second speed regulation inverter is arranged on the second suspension cage and used for supplying power to a second driving motor of the second suspension cage based on the direct current power supply on the power transmission guide rail.
The embodiment of the invention also provides a construction elevator, which comprises an upright post, a first suspension cage and a second suspension cage, and further comprises the power supply system, wherein the power supply system supplies power to the first suspension cage and the second suspension cage.
According to the technical scheme provided by the embodiment of the invention, the structure of the current collector for the trolley line is changed, and the guide mechanism for guiding the first brush or the second brush of the first current collector to pass through the second current collector is arranged on the second mounting bracket of the second current collector, so that the two mobile devices can share the power transmission guide rail, the relative spatial positions of the two mobile devices can be exchanged, the respective movement requirements of different mobile devices can be met, and the cost caused by additionally laying the power transmission guide rail can be saved.
In addition, for the power supply mode of the direct-current bus, the power transmission guide rail for transmitting the direct-current power supply can be arranged on the stand column of the construction elevator, and the first suspension cage and the second suspension cage can share the power transmission guide rail through the current collector for the trolley wire in the embodiment of the invention, so that a power cable following the first suspension cage and a power cable following the second suspension cage can be omitted, the deadweight of the first suspension cage and the second suspension cage is reduced, the load capacity of the suspension cages is favorably improved, and in addition, the first suspension cage and the second suspension cage share the power transmission guide rail, and the laying cost of the power transmission guide rail is favorably saved.
Drawings
Fig. 1 is a schematic structural view of a collector for a trolley wire and a power transmission rail according to an embodiment of the present invention;
fig. 2A to 2D are schematic diagrams illustrating a switching process of exchanging positions of a first current collector and a second current collector on a power transmission rail in a current collector for a trolley wire according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a construction hoist powered by three-phase AC in an exemplary application using individually laid power transmission rails;
FIG. 4 is a schematic diagram of an exemplary construction hoist using common power transmission rails for a three-phase AC powered construction hoist;
FIG. 5 is a schematic structural diagram of a common power transmission guide rail for construction lifting of DC bus power supply in an application example;
fig. 6 is a schematic structural view of an application example in which a power supply electrode is provided on a power transmission rail and is engaged with a brush;
fig. 7 is a schematic structural view of an application example in which three power supply electrodes are provided on a power transmission rail and are engaged with brushes;
fig. 8 is a schematic structural diagram of a power transmission guide rail using multiple power supply electrodes shared by construction elevators supplied with power by a direct current bus in an application example.
Description of reference numerals:
100. a first current collector; 101. a first mounting bracket; 102. a first brush; 103. a second brush;
104. a first hold-down mechanism; 105. a second hold-down mechanism; 1041. a first double link mechanism;
1042. a first pressing device; 1051. a second double link mechanism; 1052. a second pressing device;
200. a second current collector; 201. a second mounting bracket; 202. a tensioning mechanism;
203. a third brush; 204. a guide mechanism; 2041. a guide arc-shaped surface; 2042. a leading side;
300. a power transmission rail; 301. a conductive contact surface; 302. a guide rail side; 303. a power supply electrode;
400. a first cage;
500. a second cage;
600. an electric brush; 601. a contact portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, the described embodiments should not be construed as limiting the present invention, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
In the description of the invention reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.
In the description of the invention, reference may be made to the terms "first," second, "etc. merely for distinguishing between similar elements and not for indicating a particular ordering of such elements, it being understood that" first, "second," etc. may be interchanged with one another in a particular order or sequence, where permissible, to enable embodiments of the invention described herein to be practiced otherwise than as illustrated or described herein. Unless otherwise indicated, "plurality" means at least two.
The embodiment of the invention provides a current collector for a trolley line, which is used for supplying power to a first mobile device and a second mobile device sharing a power transmission guide rail. It can be understood that both the first mobile device and the second mobile device are powered by a trolley line, and the first mobile device and the second mobile device share a power transmission guide rail of the trolley line.
As shown in fig. 1, a collector for a trolley wire according to an embodiment of the present invention includes: a first current collector 100 and a second current collector 200, wherein the first current collector 100 comprises: a first mounting bracket 101 for mounting to a first mobile device, a first brush 102 and a second brush 103 for contacting a conductive contact surface 301 of a power transmission rail 300, a first hold-down mechanism 104 and a second hold-down mechanism 105; the first mounting bracket 101 is connected with a first brush 102 through a first pressing mechanism 104 and connected with a second brush 103 through a second pressing mechanism 105; the second current collector 200 includes: a second mounting bracket 201 used for mounting to a second mobile device, a tensioning mechanism 202 and a third brush 203 used for contacting with a conductive contact surface 301 of a power transmission guide rail 300, wherein the second mounting bracket 201 is connected with the third brush 203 through the tensioning mechanism 202; wherein a guiding mechanism 204 for guiding the first brush 102 or the second brush 103 over the second current collector 200 is provided on the second mounting bracket 201.
For example, as shown in fig. 1, since the first mobile device and the second mobile device run in a different spatial direction, the two mobile devices are swapped in position in the horizontal direction shown in fig. 1, and in the related art, since the trolley line current collector on the same power transmission guide rail cannot meet the requirement of swapping the spatial positions of the two mobile devices, a power transmission guide rail often has to be separately laid, so that the construction cost is increased, and the cost is increased.
In the embodiment of the invention, by changing the structure of the trolley wire collector, the guide mechanism 204 for guiding the first brush 102 or the second brush 103 of the first collector 100 to pass over the second collector 200 is arranged on the second mounting bracket 201 of the second collector 200, so that the power transmission guide rail 300 can be shared by two mobile devices, the relative spatial positions of the two mobile devices can be exchanged, the respective movement requirements of different mobile devices can be met, and the cost caused by laying the power transmission guide rail 300 additionally can be saved.
In the embodiment of the present invention, the first mobile device and the second mobile device may be electric devices that share the power transmission guide rail in the horizontal direction, or may also be electric devices that share the power transmission guide rail in the vertical direction (i.e., the height direction). In an application example, the first mobile device and the second mobile device are respectively two suspension cages on a stand column of the construction hoist, so that the construction cost of the construction hoist can be reduced.
In some embodiments, the guide mechanism 204 includes: the guiding arc-shaped surface 2041 is used for guiding the first brush 102 or the second brush 103 to firstly rise above the second mounting bracket 201 along the conductive contact surface 301 of the power transmission rail 300 and then fall back to the conductive contact surface 301 of the power transmission rail 300. In this way, when the first current collector 100 meets the second current collector 200, the first brush 102 and the second brush 103 on the first current collector 100 can both pass through the second current collector 200 via the guiding arc-shaped surface 2041, so as not to affect the spatial position exchange of the first mobile device and the second mobile device.
In some embodiments, to better guide the first current collector 100 over the second current collector 200, the guiding mechanism 204 further comprises: the guide side edges 2042 are disposed on two sides of the guide arc-shaped surface 2041 in the width direction, and the guide side edges 2042 are matched with the guide arc-shaped surface 2041 to form a guide space for guiding the first brush 102 or the second brush 103.
To ensure the reliability of the power supply of the first mobile device and the second mobile device via the trolley line, in some embodiments, the first pressing mechanism 104 includes: a first double-link mechanism 1041 and a first pressing device 1042; one end of the first double-link mechanism 1041 is connected to the mounting seat of the first brush 102, the other end of the first double-link mechanism 1041 is connected to the first mounting bracket 101, and the mounting seat of the first brush 102, the first double-link mechanism 1041 and the first mounting bracket 101 form a parallelogram mechanism; a first pressing device 1042 is arranged on the mounting seat of the first brush 102 and is used for applying pressure to the first brush 102 towards the conductive contact surface 301; accordingly, the second pressing mechanism 105 includes: a second double linkage 1051 and a second compression device 1052; one end of the second double-link mechanism 1051 is connected with the mounting seat of the second brush 103, the other end of the second double-link mechanism 1051 is connected with the second mounting bracket 201, and the mounting seat of the second brush 103, the second double-link mechanism 1051 and the second mounting bracket 201 form a parallelogram mechanism; a second compression device 1052 is provided on the mounting seat of the second brush 103 for applying a pressure on the second brush 103 towards the conductive contact surface 301.
In practical applications, because of wear of the brush, in order to improve the reliability of the conduction, a tension mechanism is required to be arranged on the collector to apply pressure to the brush towards the conductive contact surface. The first mounting bracket 101 is connected to the first brush 102 via the first pressing mechanism 104 and the second brush 103 via the second pressing mechanism 105, so that the first brush 102 and the second brush 103 are always pressed toward the conductive contact surface during the process of the first collector 100 passing over the second collector 200.
In some embodiments, the first pressing device 1042, the second pressing device 1052 and the tensioning mechanism 202 may employ a spring mechanism.
In some embodiments, the power transmission rail 300 comprises a conductive contact surface 301 at the bottom end and rail sides 302 arranged on both sides of the conductive contact surface 301, such that the cross section of the power transmission rail 300 is substantially "U" -shaped.
In some embodiments, guide arcuate surface 2041 is an electrical conductor; alternatively, guide arc-shaped surface 2041 is an insulator, and the distance between first brush 102 and second brush 103 is greater than the length of guide arc-shaped surface 2041 projected onto power transmission guide rail 300.
Exemplarily, when the guiding arc-shaped surface 2041 is an insulator, since the distance between the first brush 102 and the second brush 103 on the first mounting bracket 101 is greater than the length of the guiding arc-shaped surface 2041 projected onto the power transmission guide rail 300, at least one of the first brush 102 and the second brush 103 is always in contact with the conductive contact surface 301, so that the requirement of power supply reliability of the first mobile device is met.
Illustratively, the guiding arc-shaped surface 2041 is a conductive body, so that the first mobile device can not only take power from the first brush 102 or the second brush 103 in contact with the conductive contact surface 301, but also take power from the first brush 102 or the second brush 103 in contact with the guiding arc-shaped surface 2041, thereby enhancing the power supply reliability of the first mobile device.
Fig. 2A to 2D are schematic diagrams showing a process of switching the positions of the first current collector 100 and the second current collector 200 on the power transmission rail 300 in the current collector for a trolley wire according to the embodiment of the present invention. The first mobile device drives the first current collector 100 to translate from the left side to the right side of the figure, the second brush 103 in the first current collector 100 is lifted and falls back through the guide arc-shaped surface 2041, and then the first brush 102 is lifted and falls back through the guide arc-shaped surface 2041, so that the first current collector 100 successfully passes over the second current collector 200, and in the lifting process of the first brush 102 or the second brush 103, because the first pressing mechanism 104 and the second pressing mechanism 105 both adopt parallelogram mechanisms, the first brush 102 and the second brush 103 are always kept in a horizontal state, and are kept in contact with the conductive contact surface 301 under the action of the corresponding pressing devices.
In some embodiments, an insulating protective housing is mounted on the first mounting bracket 101 and the second mounting bracket 201 to meet the requirement of safety protection.
In some embodiments, the first and second movement apparatuses are two cages disposed at both sides of a column of the construction hoist. In the related art, each cage can drag a power cable to supply power to the cage, and each construction elevator must have two power cables with different prices, namely 100 meters for short and 2-300 meters for long. Because the power cable runs up and down along with the cage, and the power cable breaks due to the weight of the power cable, the power cable is frequently replaced. If the power is supplied by adopting a trolley line mode, and each cage adopts a power cable supplied by three phases, according to the power supply requirement of at least 3 core power sources of each cage, as shown in fig. 3, at least 6 trolley line transmission guide rails need to be arranged on two cages, so that the construction cost is high, and the industrialization is difficult. If the collector for trolley lines according to the embodiment of the present invention is applied, since the two cages can share the power transmission guide rails, the number of the power transmission guide rails can be reduced to 3, as shown in fig. 4.
In some embodiments, the suspension cage of the construction hoist may be powered by a dc bus, and based on this, an embodiment of the present invention further provides a power supply system for a construction hoist, including:
two power transmission guide rails 300 which are arranged on the upright post of the construction hoist at intervals in parallel and respectively used as a positive electrode and a negative electrode of direct current power supply;
two current collectors for trolley wires according to the embodiment of the present invention, the first cage 400 and the second cage 500 on both sides of the column of the construction hoist share one power transmission rail 300 through one current collector for trolley wires, and share the other power transmission rail 300 through the other current collector for trolley wires.
Therefore, the number of the power transmission guide rails required to be arranged on the construction elevator is reduced to two, and the construction cost can be further reduced.
In some embodiments, the power supply system further comprises: a rectifying circuit fixedly arranged relative to the ground for outputting a direct current power supply to the two power transmission guide rails 300, and a first speed regulation inverter arranged on the first suspension cage 400, wherein the first speed regulation inverter is used for supplying power to a first driving motor of the first suspension cage 400 based on the direct current power supply on the two power transmission guide rails 300; and a second speed regulation inverter disposed on the second cage 500, the second speed regulation inverter being configured to supply power to a second driving motor of the second cage 500 based on the dc power supplies on the two power transmission rails 300.
Here, the three-phase ac power at the construction site is first converted into a dc power by the rectifier circuit and output to the two power transmission rails 300, that is, one of the two power transmission rails serves as the positive electrode of the dc power and the other serves as the negative electrode of the dc power. The rectifier circuit may be a three-phase full bridge rectifier. The first speed-regulating inverter and the second speed-regulating inverter may take electricity from the two power transmission rails through the current collectors for the trolley wires of the embodiment of the present invention, and are configured to invert a dc power supply into an ac power supply and supply the ac power supply to the corresponding driving motor, and convert the electric energy into a dc power supply and feed the dc power supply back to the two power transmission rails 300 when the driving motor generates the electric energy.
Compared with the traditional mode that a direct current power supply is connected to the first suspension cage and the second suspension cage through power cables, the power supply system provided by the embodiment of the invention has the following advantages:
1) the embodiment of the invention supplies power to the first suspension cage and the second suspension cage through the two power transmission guide rails, thereby being beneficial to the online utilization of the power generation energy between the first driving motor of the first suspension cage and the second driving motor of the second suspension cage.
In practical application, if a power cable power supply mode is adopted, if one cage needs to use electric energy generated by the descending of the other cage to ascend, the electric energy generated by the driving motor of the descending cage must be firstly sent to the bottom cage on the ground, and then is sent to the corresponding driving motor through the power cable of the other cage; if two transmission guide rails are adopted for power supply, each driving motor can directly obtain a direct current power supply from the transmission guide rails at the shortest distance, and particularly when two suspension cages are close to each other, the path of the direct current power supply generated by descending of the other suspension cage on line is shortened, so that the exchange path of the power generation energy of the two suspension cages is greatly shortened, and the reduction of the inductance on the two transmission guide rails serving as direct current buses is facilitated.
2) The embodiment of the invention can effectively reduce the inductance in the working process.
Because the power transmission guide rails are always arranged in parallel in the trolley line power supply mode, and the power cable is bent, even if the power cable supplies power, the current path is the same (the trolley line is shorter anyway), and therefore, the feeder inductance of the power transmission guide rails corresponding to the trolley lines is greatly lower than that of the conventional power cable power supply mode. Therefore, under the variable-frequency transmission mode, the power supply mode of the double-cage direct current supply mode sharing the sliding contact line is superior to the power supply mode of the power cable.
The embodiment of the invention also provides a construction elevator, which comprises an upright post, a first cage and a second cage, and further comprises the power supply system of the embodiment of the invention, wherein the power supply system supplies power to the first cage and the second cage.
Here, the construction hoist may include a fence (also called a bottom cage) fixed on the ground, a rack installed on a standard section of the column, and a first cage driven by a first driving motor and ascending or descending along the standard section; the second suspension cage is driven by a second driving motor and ascends or descends along the standard knot. Specifically, the first driving motor drives the gear to ascend and descend along the rack, and the second driving motor drives the gear to ascend and descend along the rack.
The construction hoist according to the embodiment of the present invention has the advantages of the power supply system, and specific reference is made to the related description of the power supply system, which is not repeated herein.
It will be appreciated that the power transmission tracks described above are all of a single conductive electrode configuration, i.e. only one conductive electrode is provided on one power transmission track. As shown in fig. 6, the power transmission rail 300 is formed in a groove shape as a whole, the conductive electrode 303 is laid on the bottom surface of the groove, the conductive contact surface 301 is formed on the upper surface of the conductive electrode 303, the rail side 302 is formed on both sides of the inner wall of the groove, and the brush 600 includes a contact portion 601 which is in sliding contact with the upper surface of the conductive electrode 303. Here, the brush 600 may be the first brush 102, the second brush 103, and the third brush 203, that is, the first brush 102, the second brush 103, and the third brush 203 may all be configured as the one-contact portion 601 of the brush 600.
In some embodiments, in order to further reduce the number of the power transmission rails, the structure of the power transmission rails may be improved, at least two power supply electrodes may be formed on the power transmission rails, and at least one of the power supply electrodes is located on the conductive contact surface, for example, a plurality of power supply electrodes may be arranged at the bottom of the groove of the power transmission rail in parallel at intervals, or power supply electrodes may be further provided on the side of the power transmission rail to form a plurality of conductive contact surfaces on the power transmission rail. Correspondingly, the first brush, the second brush and the third brush are all provided with contact parts which are respectively contacted with the power supply electrodes.
Illustratively, as shown in fig. 7, the power transmission rail 300 is in a groove shape as a whole, a conductive electrode 303 is laid on the bottom surface of the groove, the aforementioned rail side edges 302 are respectively formed on two sides of the inner wall of the groove, a conductive electrode 303 is laid on each rail side edge 302, so that three conductive contact surfaces are formed on the power transmission rail 300, and the brush 600 is provided with contact portions 601 which are respectively connected with the conductive contact surfaces in a sliding manner, that is, three contact portions 601, so that three power supply lines can be provided for the electric equipment. The collector for the trolley conductor is also suitable for the power transmission guide rail with multiple power supply electrodes, and only the first electric brush, the second electric brush and the third electric brush are required to be provided with the contact parts which are respectively contacted with the power supply electrodes, so that the requirement of exchanging the relative space positions among different mobile devices on the power transmission guide rail with the multiple power supply electrodes can be met.
For example, as shown in fig. 8, in the construction hoist using the dc bus system for power supply, if a power transmission rail having a plurality of power supply electrodes is used, the number of power transmission rails can be reduced to one, the positive electrode and the negative electrode of the dc bus share the same power transmission rail, and the first cage 400 and the second cage 500 share the same power transmission rail via the aforementioned trolley wire current collector, so that power supply to the dc bus can be realized. Thus, the deployment cost of the transmission guide rail on the construction hoist can be further reduced. It can be understood that the power transmission guide rail is suitable for a power transmission guide rail with multiple power supply electrodes, compared with a power cable, the power transmission guide rail is beneficial to online utilization of power generation energy, and inductance in the working process is effectively reduced, and the like, and details are not repeated herein.
In practical application, for the power transmission guide rail with multiple power supply electrodes, an insulation protection structure can be arranged between the power supply electrodes to avoid short circuit between the electrodes; correspondingly, an insulation protection structure is required to be arranged between the contact parts on the electric brush so as to meet the requirement of safety precaution.
It should be noted that: the technical schemes described in the embodiments of the present invention can be combined arbitrarily without conflict.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A trolley wire current collector for supplying power to a first mobile device and a second mobile device that share a power transmission rail, comprising:
a first current collector comprising: the first mounting bracket is used for mounting on the first mobile equipment, the first electric brush and the second electric brush are used for contacting with the conductive contact surface of the power transmission guide rail, and the first pressing mechanism and the second pressing mechanism are used for pressing the first electric brush and the second electric brush; the first mounting bracket is connected with the first electric brush through the first pressing mechanism and is connected with the second electric brush through the second pressing mechanism;
a second current collector comprising: a second mounting bracket for mounting to the second mobile device, a tensioning mechanism, and a third brush for contacting the conductive contact surface of the power transmission rail, the second mounting bracket being coupled to the third brush via the tensioning mechanism;
wherein a guide mechanism for guiding the first brush or the second brush over the second collector is provided on the second mounting bracket; the guide mechanism includes: and the guide arc-shaped surface is used for guiding the first electric brush or the second electric brush to firstly lift to the upper part of the second mounting bracket along the conductive contact surface of the power transmission guide rail and then fall back to the conductive contact surface of the power transmission guide rail.
2. The collector for trolley wire according to claim 1, wherein the guide mechanism further comprises:
the guide side edges are arranged on two sides of the width direction of the guide arc-shaped surface and matched with the guide arc-shaped surface to form a guide space for guiding the first electric brush or the second electric brush.
3. The current collector for trolley wires according to claim 1, wherein the first pressing mechanism comprises:
one end of the first double-link mechanism is connected with the mounting seat of the first brush, the other end of the first double-link mechanism is connected with the first mounting bracket, and the mounting seat of the first brush, the first double-link mechanism and the first mounting bracket form a parallelogram mechanism;
and the first pressing device is arranged on the mounting seat of the first electric brush and is used for applying pressure towards the conductive contact surface to the first electric brush.
4. The collector for trolley wire according to claim 1, wherein the second pressing mechanism comprises:
one end of the second double-link mechanism is connected with the mounting seat of the second brush, the other end of the second double-link mechanism is connected with the second mounting bracket, and the mounting seat of the second brush, the second double-link mechanism and the second mounting bracket form a parallelogram mechanism;
and the second pressing device is arranged on the mounting seat of the second electric brush and is used for applying pressure towards the conductive contact surface to the second electric brush.
5. The collector of claim 1, wherein the guide arc-shaped surface is a conductor or an insulator, and a distance between the first brush and the second brush is larger than a length of the guide arc-shaped surface projected onto the power transmission rail.
6. The collector for a trolley wire according to claim 1, wherein at least two power feeding electrodes are formed on said power transmission rail, at least one of said power feeding electrodes is located on said conductive contact surface, and each of said first brush, said second brush, and said third brush is provided with a contact portion which is in contact with each of said power feeding electrodes.
7. A construction elevator power supply system, comprising:
the power transmission guide rail is arranged on the upright post of the construction hoist;
the trolley wire power collector as claimed in any one of claims 1 to 6, wherein the first cage and the second cage on both sides of the column of the construction hoist share the power transmission rail via the trolley wire power collector.
8. The power supply system of claim 7, further comprising:
the rectifying circuit is fixedly arranged relative to the ground and used for outputting a direct-current power supply to the power transmission guide rail;
the first speed regulation inverter is arranged on the first suspension cage and used for supplying power to a first driving motor of the first suspension cage based on a direct current power supply on the power transmission guide rail;
and the second speed regulation inverter is arranged on the second suspension cage and used for supplying power to a second driving motor of the second suspension cage based on the direct current power supply on the power transmission guide rail.
9. A construction elevator comprising a column, a first cage and a second cage, further comprising a power supply system as claimed in claim 7 or 8, said power supply system supplying power to said first cage and said second cage.
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| CN202010765130.XA CN111799623B (en) | 2020-08-03 | 2020-08-03 | Current collector for sliding contact line, construction elevator and power supply system |
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| CN202010765130.XA CN111799623B (en) | 2020-08-03 | 2020-08-03 | Current collector for sliding contact line, construction elevator and power supply system |
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| CN111799623B true CN111799623B (en) | 2021-09-28 |
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| CN113200430B (en) * | 2021-05-25 | 2023-11-03 | 南通理工学院 | Power supply device for super high-rise building construction lifter |
| CN114744458B (en) * | 2022-04-28 | 2024-03-22 | 山东新一代信息产业技术研究院有限公司 | Method, system, equipment and medium for power taking of distributed contact of rail trolley wire |
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| JP3717826B2 (en) * | 2001-10-04 | 2005-11-16 | 財団法人鉄道総合技術研究所 | Pantograph current collection test equipment |
| CN204464721U (en) * | 2014-10-20 | 2015-07-08 | 广州市京龙工程机械有限公司 | With the Contiuum type building hoist trolley cover of the integrated setting of standard knot |
| CN205051144U (en) * | 2015-10-29 | 2016-02-24 | 无锡双嘉传动电器有限公司 | SJP series current collector |
| CN210926571U (en) * | 2020-01-03 | 2020-07-03 | 羊林波 | Construction elevator sliding contact line capable of improving electrical safety |
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