Scissor-type telescopic power supply device

Abstract

The present invention discloses a scissor-type telescopic power-taking device, comprising a scissor-type telescopic unit and a power-taking mechanism arranged on the scissor-type telescopic unit; the scissor-type telescopic unit comprises a scissor mechanism, a fixed support, a movable support and a telescopic drive mechanism. The scissor-type telescopic power-taking device of the present invention realizes intelligent telescopic control of the scissor-type telescopic unit by coordinating the scissor mechanism, the fixed support, the movable support and the telescopic drive mechanism, thereby realizing intelligent extension and retraction of the power-taking mechanism, has a long telescopic distance, a simple structure, low cost, and convenient maintenance, can effectively improve the reliability of external power-taking equipment, reduce operation and maintenance costs, and at the same time improve the maintenance efficiency of front-line production workers.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power devices, and in particular to a scissor-type telescopic power-taking device. Background Art

[0002] At the container terminal, the electric bridge is connected to the power supply busbar on the side of the runway of the terminal yard through an automatic power supply device. At present, the automatic power supply device used in the electric bridge generally has the disadvantages of many parts, complex structure, high failure rate, low reliability and high cost.

[0003] At the same time, the copper base plate on the automatic power supply device is used to connect with the power supply busbar of the wharf yard. Due to the sliding friction between the copper base plate and the busbar when the electric field bridge moves, the copper base plate will cause wear. The copper base plate of the existing automatic power supply device must be removed for maintenance. The automatic power supply device can continue to be used only after the new copper base plate is replaced. The maintenance is very inconvenient, not only the maintenance time is long, but also the maintenance cost is high. Summary of the invention

[0004] The present invention aims to solve one of the above technical problems at least to a certain extent.

[0005] The present invention provides a scissor-type telescopic power-taking device, comprising:

[0006] Scissor-type telescopic units; and

[0007] A power taking mechanism provided on the scissor-type telescopic unit;

[0008] The scissor-type telescopic unit comprises:

[0009] A scissor-type mechanism, wherein two ends of the scissor-type mechanism located in the telescopic direction thereof are respectively a fixed end and a telescopic end;

[0010] A fixed support, arranged at a fixed end of the scissor mechanism;

[0011] A movable support, disposed at the telescopic end of the scissor mechanism; and

[0012] The telescopic driving mechanism is used to drive the telescopic end of the scissor mechanism to extend or retract relative to the fixed end; the power taking mechanism is arranged on the moving support;

[0013] The scissor-type mechanism is composed of at least two sets of hinged scissor-type connecting rod pairs, and the scissor-type connecting rod pair includes two symmetrically arranged and hinged connecting rods.

[0014] Further, the fixed end of the scissor-fork mechanism has a first fixed connection part fixedly hinged on the fixed support and a first movable connection part movably hinged on the fixed support; the telescopic end of the scissor-fork mechanism has a second fixed connection part fixedly hinged on the movable support and a second movable connection part movably hinged on the movable support;

[0015] The telescopic driving mechanism comprises:

[0016] A first linear drive mechanism disposed on the fixed support, for driving the first movable connection portion away from the first fixed connection portion; and

[0017] The second linear drive mechanism disposed on the movable support is used to drive the second movable connection part to approach the second fixed connection part.

[0018] Further, the fixed support is provided with a first linear guide groove and a first roller, the first roller is movably arranged in the first linear guide groove and can perform linear reciprocating motion in the first linear guide groove; the first movable connecting part is hinged to the first roller through a first roller shaft; the first linear driving mechanism is used to drive the first roller shaft to drive the first movable connecting part away from the first fixed connecting part;

[0019] A second linear guide groove and a second roller are provided on the movable support. The second roller is movably arranged in the second linear guide groove and can perform linear reciprocating motion in the second linear guide groove. The second movable connecting part is hinged to the second roller through the second roller shaft. The second linear driving mechanism drives the second roller shaft to drive the second movable connecting part to approach the second fixed connecting part.

[0020] Furthermore, the first linear drive mechanism is a push rod motor fixed on a fixed support, a push rod of the push rod motor faces the first roller shaft, and the push rod contacts the first roller shaft surface when extended.

[0021] Furthermore, the first linear drive mechanism also includes a push rod limiting mechanism for limiting the telescopic position of the push rod of the push rod motor, and the push rod limiting mechanism includes an extension limit module and a retraction limit module.

[0022] Furthermore, the second linear drive mechanism is an elastic member with resilience, the elastic member is accommodated in the second guide groove, one end of the elastic member is fixed to the second fixed pin shaft through an adjusting screw, and the other end thereof is fixedly connected to the second movable connecting part.

[0023] Furthermore, the elastic member is a tension spring.

[0024] Furthermore, a first articulated arm and a second articulated arm are respectively provided at both ends of the connecting rod, the first articulated arm is used to be articulated with a fixed support or a movable support, the second articulated arm is used to be articulated with a connecting rod of an adjacent scissors-type connecting rod pair, the first articulated arm and the connecting rod are arranged at a first angle on the inner side of the scissors-type mechanism, the second articulated arm and the connecting rod are arranged at a second angle on the inner side of the scissors-type mechanism, and the first angle and the second angle are both obtuse angles.

[0025] Furthermore, at least two connecting rods of the first and last two groups of scissor connecting rod pairs of the scissor mechanism connected to the fixed support and the movable support cooperate to form a large scissor arm and a small scissor arm, and one end of the small scissor arm is connected to the fixed support and the movable support.

[0026] Furthermore, the power taking mechanism comprises an insulating substrate and a copper substrate arranged on the insulating substrate; the insulating substrate is rotatably hinged on the movable support.

[0027] The beneficial effects of the present invention are as follows: the scissors-type telescopic power-taking device of the present invention, by coordinating the scissors-type mechanism, fixed support, movable support and telescopic drive mechanism, realizes the intelligent telescopic control of the scissors-type telescopic unit, and then realizes the intelligent extension and retraction of the power-taking mechanism. It has a long telescopic distance, a simple structure, a low cost and convenient maintenance. It can effectively improve the reliability of external power-taking equipment, reduce operation and maintenance costs, and improve the maintenance efficiency of front-line production personnel. At the same time, the power-taking mechanism of the present invention is rotatably connected to the movable support through a pin shaft through a modular and standardized structure setting. When the copper base plate needs to be replaced, the two power-taking pin shafts can be quickly removed and directly replaced with a spare power-taking mechanism. The replaced power-taking mechanism is taken back to the maintenance workshop to replace the worn copper base plate as a subsequent spare module, and on-site maintenance is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure from the main perspective of the scissor-type telescopic power-taking device of the present invention in the unfolded state.

[0029] Figure 2 For the present invention Figure 1 Schematic diagram of the local enlarged structure.

[0030] Figure 3 It is a schematic diagram of the structure from a main viewing angle of the scissor-type telescopic power-taking device of the present invention in a folded state.

[0031] Figure 4 For the present invention Figure 3 Schematic diagram of the local enlarged structure.

[0032] Figure 5 It is a schematic structural diagram of the scissor-type telescopic power-taking device of the present invention in a folded state from a right side view.

[0033] Figure 6 It is a schematic diagram of the structure of the first embodiment of the scissor-fork mechanism of the present invention from a front view perspective.

[0034] Figure 7 It is a schematic diagram of the structure of the scissor-type connecting rod pair from a front view perspective in the first embodiment of the present invention. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them; furthermore, a first feature being "above", "above" and "above" the second feature includes the first feature being directly above and diagonally above the second feature, or simply means that the first feature is higher in level than the second feature; a first feature being "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] The present invention will be further described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0041] Please refer to Figures 1 to 7 The present invention provides a scissor-type telescopic power-taking device, comprising a scissor-type telescopic unit and a power-taking mechanism 200 arranged on the scissor-type telescopic unit.

[0042] The scissor-type telescopic unit comprises a scissor mechanism 10, a fixed support 20, a movable support 30, and a telescopic driving mechanism.

[0043] The two ends of the scissors-fork mechanism 10 located in the telescopic direction are respectively a fixed end and a telescopic end. The fixed end of the scissors-fork mechanism 10 is connected to the fixed support 20, and the scissors-type telescopic unit is connected to an external power-taking device such as an electric field bridge through the fixed support 20. The fixed support 20 is provided with a first mounting bracket 51 for mounting the external power-taking device. The telescopic end of the scissors-fork mechanism 10 is connected to a moving support 30, and the power-taking mechanism 200 is arranged on the moving support 30. The moving support 30 is provided with a second mounting bracket 52 for mounting the power-taking mechanism 200. The telescopic drive mechanism controls the expansion and contraction of the scissors-fork mechanism 10 to extend or retract the telescopic end of the scissors-fork mechanism 10 relative to the fixed end, thereby realizing the extension and retraction of the power-taking mechanism 200 relative to the external power-taking device such as the electric field bridge.

[0044] The fixed end of the scissor mechanism 10 has a first fixed connection part 101 fixedly hinged on the fixed support 20 and a first movable connection part 102 movably hinged on the fixed support 20. The telescopic end of the scissor mechanism 10 has a second fixed connection part 103 fixedly hinged on the movable support 30 and a second movable connection part 104 movably hinged on the movable support 30.

[0045] The telescopic drive mechanism includes a first linear drive mechanism arranged on the fixed support 20, and a second linear drive mechanism arranged on the movable support 30. The first linear drive mechanism is used to drive the first movable connection part 102 away from the first fixed connection part 101 to achieve the folding of the scissors-fork mechanism 10, and the second linear drive mechanism is used to drive the second movable connection part 104 close to the second fixed connection part 103 to achieve the unfolding of the scissors-fork mechanism 10.

[0046] The fixed support 20 is provided with a first linear guide groove 21 and a first roller 22. The guide of the first linear guide groove 21 is perpendicular to the extension and retraction direction of the scissor mechanism 10. The first roller 22 is movably arranged in the first linear guide groove 21 and can perform linear reciprocating motion in the first linear guide groove 21. The first fixed connection part 101 is hinged to the end of the first linear guide groove 21 through the first fixed pin shaft 23, and the first movable connection part 102 is hinged to the first roller 22 through the first roller shaft 24; the first linear drive mechanism is used to drive the first roller shaft 24 to drive the first movable connection part 102 away from the first fixed connection part 101. In this embodiment, the number of the first rollers 22 is two, and the two first rollers 22 are arranged on the first roller shaft 24 at intervals. The first linear drive mechanism is a linear driver, which includes a push rod motor 41 fixed to the end of the first linear guide groove 21, and a controller connected to the push rod motor 41 to control the operation of the push rod motor 41. The end of the push rod 411 of the push rod motor 41 faces the first roller shaft 24, and the push rod only contacts the surface of the first roller shaft 24 when it is extended. The push rod motor 41 only generates thrust on the first roller shaft 24 when the push rod 411 is extended, and does not generate pulling force on the first roller shaft 24 when the push rod 411 is retracted.

[0047] The movable support 30 is provided with a second linear guide groove 31 and a second roller 32. The guide of the second linear guide groove 31 is parallel to the guide of the first linear guide groove 21. The second roller 32 is movably arranged in the second linear guide groove 31 and can perform linear reciprocating motion in the second linear guide groove 31. The second fixed connection part 103 is hinged to the end of the second linear guide groove 31 through the second fixed pin shaft 33. The second movable connection part 104 is hinged to the second roller 32 through the second roller shaft 34. The second linear drive mechanism can drive the second roller shaft 34 to drive the second movable connection part 104 to approach the second fixed connection part 103. In this embodiment, the number of the second rollers 32 is two, and the two second rollers 32 are installed on the second roller shaft 34 at intervals. The second linear drive mechanism is an elastic member 42 with its own resilience. The elastic member 42 is accommodated in the second linear guide groove 31, one end of which is fixed to the second fixed pin shaft 33, and the other end is fixedly connected to the second roller shaft 34. In the present invention, the elastic member 42 is preferably configured as a tension spring. It is understandable that in other embodiments, the elastic member 42 may also be other elastic structural members with stable resilience.

[0048] In this embodiment, the elastic member 42 is fixed to the second fixed pin 33 via an adjusting screw 70 . By adjusting the adjusting screw 70 , the contact surface pressure between the power taking mechanism 200 and the power supply busbar can be adjusted.

[0049] The first linear drive mechanism and the second linear drive mechanism cooperate to complete the folding and unfolding of the scissor-fork mechanism 10. Specifically, the controller is provided with a push-out instruction module and a retracting instruction module. When the scissor-fork mechanism 10 needs to be folded, the push rod 411 of the push rod motor 41 extends under the control of the push-out instruction module and pushes the first roller shaft 24 to move in a direction away from the first fixed connection part 101, and the first movable connection part 102 drives the second movable connection part 104 away from the second fixed connection part 103 under the drive of the first roller shaft 24, and at this time, the elastic member 42 is in a stretched state; when the scissor-fork mechanism 10 needs to be unfolded, the push rod 411 of the push rod motor 41 retracts under the control of the retracting instruction module, and at this time, the second movable connection part 104 approaches the second fixed connection part 103 under the action of the elastic member 42's own resilience, and at the same time drives the first movable connection part 102 to approach the first fixed connection part 101.

[0050] In order to accurately control the extension position and retracted position of the push rod 411, the first linear drive mechanism also includes a push rod limiting mechanism connected to the controller to limit the telescopic position of the push rod 411, and the push rod limiting mechanism includes an extension limiting module that limits the extension position and a retraction limiting module that limits the retracted position. In the present invention, when the power-taking mechanism 200 is in the extended working state, the push rod 411 of the push rod motor 41 is in the retracted state. To ensure that the power-taking mechanism 200 can be freely extended and retracted under the action of the elastic member 42, when the scissor mechanism 10 is in the longest extended state, the power-taking mechanism 200 is in the maximum extended working state. At this time, the push rod 411 does not contact the first roller shaft 24, and the spacing distance between the end of the push rod 411 and the first roller shaft 24 is preferably set to 30 mm.

[0051] Please refer to Figure 6 The scissor mechanism 10 is composed of at least two sets of hinged scissor-type connecting rod pairs 11, each set of the scissor-type connecting rod pairs 11 includes two hinged connecting rods 110, and the two connecting rods 110 are symmetrically arranged and the symmetry axis is parallel to the telescopic axis of the scissor mechanism 10. In this embodiment, the telescopic axis of the scissor mechanism 10 is parallel to the X axis. Figure 6 The solid arrow on the X-axis on the central coordinate axis shows the expansion direction of the scissor-fork mechanism 10 , and the dotted arrow on the X-axis shows the contraction direction of the scissor-fork mechanism 10 .

[0052] Please refer to Figure 7In order to make the two links 110 of the same scissor-fork link pair 11 overlap when the scissor-fork mechanism 10 is folded, and the links 110 of two adjacent scissor-fork link pairs 11 can be parallel, the two ends of the link 110 are respectively provided with a first hinge arm 111 and a second hinge arm 112, the first hinge arm 111 is used to be hinged with the fixed support 20 or the movable support 30, the second hinge arm 112 is used to be hinged with the link 110 of the adjacent scissor-fork link pair 11, the first hinge arm 111 and the link 110 form a first angle with an angle value of α on the inner side of the scissor-fork mechanism 10, and the second hinge arm 112 and the link 110 form a second angle with an angle value of β on the inner side of the scissor-fork mechanism 10. The first angle and the second angle are both obtuse angles. In this embodiment, the angle value α of the first angle and the angle value β of the second angle can be set to be the same or different. The value range of the angle values ​​α and β is 90°<α / β<170°, and is preferably set to 120°<α / β<150°, such as α=125°, β=145°.

[0053] In order to reduce the size of the fixed support 20 and the movable support 30 as much as possible, in the present invention, at least the two connecting rods 110 of the first and last groups of scissor-type connecting rod pairs 11 of the scissor-type mechanism 10 cooperate to form a large scissor-type arm and a small scissor-type arm, and one end of the small scissor-type arm is connected to the fixed support 20 or the movable support 30. It can be understood that the "first and last groups of scissor-type connecting rod pairs 11" refer to the first group of scissor-type connecting rod pairs 11 connected to the fixed support 20 and the last group of scissor-type connecting rod pairs 11 connected to the movable support 30 in the scissor-type mechanism 10 composed of multiple groups of scissor-type connecting rod pairs 11. In a specific implementation, the length ratio of the large scissor-type arm to the small scissor-type arm is preferably set to 5:1. Of course, in some other embodiments, the length ratio of the large scissor-type arm to the small scissor-type arm can also be adjusted according to actual conditions.

[0054] The power supply mechanism 200 includes an insulating substrate 201 and a copper substrate 202 disposed on the insulating substrate 201. The copper substrate 202 is used to contact the power supply busbar to achieve power supply. The insulating substrate 201 is rotatably hinged on the movable support 30. Figure 4 As shown, the insulating substrate 201 is rotatably hinged to the second mounting bracket 52 through a pin shaft 60, and the insulating substrate 201 can be rotated with the center line of the pin shaft 60 as the rotation axis, and the rotatable angle of the insulating substrate 201 is preferably set to ±15°. Of course, in other embodiments, the rotatable angle of the insulating substrate 201 can also be set to other appropriate values ​​according to actual needs, and is not limited to the values ​​provided by the present invention. In this embodiment, two copper substrates 202 are arranged on the insulating substrate 201, and the two copper substrates 202 are fixed on the insulating substrate 201 at intervals.

[0055] The power-taking mechanism 200 of the present invention adopts a modular, standardized integrated structure, and the power-taking mechanism 200 is rotatably connected to the movable support 30 via a pin shaft 60. When the copper base plate 202 needs to be replaced, the pin shaft 60 can be quickly removed and directly replaced with a spare power-taking mechanism 200. The scissor-type telescopic power-taking device can continue to be used, and the replaced power-taking mechanism 200 can be taken back to the maintenance workshop to replace the worn copper base plate 202 for use as a subsequent spare module, which is very convenient for on-site maintenance.

[0056] like Figure 5 As shown, in order to better support and drive the power extraction mechanism 200 to work, the scissor-type telescopic unit is provided with two groups of scissor mechanisms 10 in parallel front and back, and two groups of telescopic driving mechanisms are provided on the fixed support 20 and the movable support 30 corresponding to the two groups of scissor mechanisms 10.

[0057] The structure and working method of the scissor-type telescopic power-taking device of the present invention are further described in detail below in conjunction with the accompanying drawings. In this embodiment, the external power-taking device is taken as an example of an electric field bridge.

[0058] Please refer to Figure 6 The coordinate axis shown, the scissor mechanism 10 is extended and retracted in the X-axis direction. In this embodiment, the scissor mechanism 10 is composed of two groups of symmetrically hinged scissor-type connecting rod pairs 11, and each group of the scissor-type connecting rod pairs 11 includes two symmetrically hinged connecting rods 110.

[0059] Please refer to Figure 6 For ease of understanding, when specifically introducing this embodiment, the scissors-type connecting rod pair 11 connected to the fixed support 20 is named “left scissors-type connecting rod pair 11a”, the scissors-type connecting rod pair 11 connected to the movable support 30 is named “right scissors-type connecting rod pair 11b”, the connecting rod 110 located above is named “upper connecting rod 110a”, and the connecting rod 110 located below is named “lower connecting rod 110b”.

[0060] The upper connecting rod 110a and the lower connecting rod 110b are symmetrically hinged to form a large scissor arm and a small scissor arm. The length of the large scissor arm is L1, the length of the small scissor arm is L2, and the length ratio L1:L2 of the large scissor arm to the small scissor arm is preferably set to 5:1.

[0061] It should be noted that the “symmetry” referred to in this embodiment only refers to the fact that the four connecting rods 110 and the first articulated arm 111 and the second articulated arm 112 are symmetrically arranged with respect to each other in the main viewing angle, but does not mean that the four connecting rods 110 are located in the same plane, nor does it mean that the side structures of the first articulated arm 111 and the second articulated arm 112 on each connecting rod 110 are completely in phase.

[0062] Please continue to refer to Figure 6The first articulated arm 111 provided on the lower link 110b of the left scissors-fork link pair 11a constitutes a first fixed connection portion 101, the first articulated arm 111 provided on the upper link 110a of the left scissors-fork link pair 11a constitutes a first movable connection portion 102, the first articulated arm 111 provided on the lower link 110b of the right scissors-fork link pair 11b constitutes a second fixed connection portion 103, and the first articulated arm 111 provided on the upper link 110a of the right scissors-fork link pair 11b constitutes a second movable connection portion 104; the second articulated arm 112 provided on the upper link 110a and the lower link 110b of the left scissors-fork link pair 11a is articulated one-to-one with the second articulated arm 112 provided on the upper link 110a and the lower link 110b of the right scissors-fork link pair 11b.

[0063] The first hinge arm 111 provided on the lower link 110b of the left scissor-type connecting rod pair 11a is fixedly hinged on the fixed support 20 through the first fixed pin shaft 23, the first hinge arm 111 provided on the upper link 110a of the left scissor-type connecting rod pair 11a is movably hinged on the fixed support 20 through the first roller shaft 24, the push rod motor 41 is fixed to the top end of the first linear guide groove 21 through the first fixed pin shaft 23, and the end of the push rod 411 of the push rod motor 41 faces the first roller shaft 24. The controller is arranged in the driver's cab of the electric field bridge.

[0064] The first hinged arm 111 arranged on the lower link 110b of the right scissors-type link pair 11b is fixedly hinged to the movable support 30 through the second fixed pin 33, and the first hinged arm 111 arranged on the upper link 110a of the right scissors-type link pair 11b is movably hinged to the movable support 30 through the second roller shaft 34. The upper end of the tension spring is fixed to the second fixed pin 33 through the adjusting screw 70, and the lower end of the tension spring is fixed to the second roller shaft 34.

[0065] The scissor-type telescopic power-taking device is connected to the electric field bridge via a first mounting bracket 51 arranged on the fixed support 20 , and a power-taking mechanism 200 is hinged on the second mounting bracket 52 of the movable support 30 .

[0066] In the standby state, the push rod 411 of the push rod motor 41 extends to the limited extension position and abuts against the first roller shaft 24, and the scissor-fork mechanism 10 hinged on the first roller shaft 24 is in a retracted state. At this time, the four connecting rods 110 are perpendicular to the X-axis or infinitely close to the perpendicular X-axis, and the tension spring elastically connected between the second fixed pin shaft 33 and the second roller shaft 34 is in a stretched state; when the electric field bridge needs to draw power, the electric field bridge driver presses the button on the controller to start the push-out command module in the driver's cab, and the push rod motor 41 is energized and controls the push rod 411 to retract. The rebound force of the tension spring drives the scissor-fork mechanism 10 to extend in the X-axis direction. When the push rod 411 retracts to the limited retracted position, the push rod motor 41 is automatically powered off, and the push rod 411 stops retracting. At this time, the power-taking mechanism 200 is driven by the scissor-type telescopic unit. The push rod 411 is in contact with the first roller shaft 24 and drives the first roller shaft 24 to move downward, thereby driving the scissors mechanism 10 to retract. At this time, the tension spring is stretched, and when the push rod 411 is extended to the limited extended position, the push rod motor 41 is automatically powered off, and the push rod 411 stops extending. At this time, the power taking mechanism 200 is in a retracted state driven by the scissors-type telescopic unit, and the power taking mechanism 200 is disconnected from the power supply busbar of the wharf yard, thereby achieving the purpose of automatically disconnecting the power supply of the wharf yard power supply busbar of the electric field bridge.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "an example", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0068] The above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A scissor-type telescopic power-taking device, It is characterized in that include: Scissor-type telescopic unit; as well as A power taking mechanism provided on the scissor-type telescopic unit; The scissor-type telescopic unit comprises: A scissor-type mechanism, wherein two ends of the scissor-type mechanism located in the telescopic direction thereof are respectively a fixed end and a telescopic end; A fixed support, arranged at a fixed end of the scissor mechanism; A movable support, disposed at the telescopic end of the scissor mechanism; and The telescopic driving mechanism is used to drive the telescopic end of the scissor mechanism to extend or retract relative to the fixed end; the power taking mechanism is arranged on the moving support; The scissor-type mechanism is composed of at least two sets of hinged scissor-type connecting rod pairs, and the scissor-type connecting rod pairs include two symmetrically arranged and hinged connecting rods; The fixed end of the scissor mechanism has a first fixed connection part fixedly hinged on the fixed support and a first movable connection part movably hinged on the fixed support; the telescopic end of the scissor mechanism has a second fixed connection part fixedly hinged on the movable support and a second movable connection part movably hinged on the movable support; The telescopic driving mechanism comprises: A first linear drive mechanism disposed on the fixed support, for driving the first movable connection portion away from the first fixed connection portion; and A second linear drive mechanism disposed on the movable support, for driving the second movable connection portion to approach the second fixed connection portion; The fixed support is provided with a first linear guide groove and a first roller, the first roller is movably arranged in the first linear guide groove and can perform linear reciprocating motion in the first linear guide groove; the first movable connecting part is hinged to the first roller through the first roller shaft; the first linear driving mechanism is used to drive the first roller shaft to drive the first movable connecting part away from the first fixed connecting part; A second linear guide groove and a second roller are provided on the movable support. The second roller is movably arranged in the second linear guide groove and can perform linear reciprocating motion in the second linear guide groove. The second movable connecting part is hinged to the second roller through the second roller shaft. The second linear driving mechanism drives the second roller shaft to drive the second movable connecting part to approach the second fixed connecting part.

2. The scissor-type telescopic power-taking device according to claim 1, It is characterized in that The first linear drive mechanism is a push rod motor fixed on a fixed support, a push rod of the push rod motor faces the first roller shaft, and the push rod contacts the first roller shaft surface when extended.

3. The scissor-type telescopic power-taking device according to claim 2, It is characterized in that The first linear drive mechanism also includes a push rod limiting mechanism for limiting the telescopic position of the push rod of the push rod motor, and the push rod limiting mechanism includes an extension limiting module and a retraction limiting module.

4. The scissor-type telescopic power-taking device according to claim 1, It is characterized in that The second linear drive mechanism is an elastic member with resilience, the elastic member is accommodated in the second guide groove, one end of the elastic member is fixed to the second fixed pin shaft through an adjusting screw, and the other end thereof is fixedly connected to the second movable connecting part.

5. The scissor-type telescopic power-taking device according to claim 4, It is characterized in that The elastic member is a tension spring.

6. The scissor-type telescopic power-taking device according to any one of claims 1 to 5, It is characterized in that A first articulated arm and a second articulated arm are respectively provided at both ends of the connecting rod. The first articulated arm is used to be articulated with a fixed support or a movable support, and the second articulated arm is used to be articulated with a connecting rod of an adjacent scissors-type connecting rod pair. The first articulated arm and the connecting rod are arranged at a first angle on the inner side of the scissors-type mechanism, and the second articulated arm and the connecting rod are arranged at a second angle on the inner side of the scissors-type mechanism. The first angle and the second angle are both obtuse angles.

7. The scissor-type telescopic power-taking device according to any one of claims 1 to 5, It is characterized in that The two connecting rods of at least the first and last two groups of scissor connecting rod pairs of the scissor mechanism connected to the fixed support and the movable support cooperate to form a large scissor arm and a small scissor arm, and one end of the small scissor arm is connected to the fixed support and the movable support.

8. The scissor-type telescopic power-taking device according to any one of claims 1 to 5, It is characterized in that The power taking mechanism comprises an insulating substrate and a copper substrate arranged on the insulating substrate; the insulating substrate is rotatably hinged on a movable support.

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