Positioning and clamping mechanism and device for overhead contact system busbar

Abstract

The utility model discloses a kind of positioning clamping mechanism and device of overhead contact system busbar, it is related to busbar positioning technical field, comprising: fixed base, multiple ball bearings and two sliding members, the upper end of fixed base is used to connect insulator, multiple ball bearings are located at the both sides of fixed base and form vertical slide and horizontal slide, two sliding members are located at the both sides of fixed base and with vertical slide and horizontal slide formed by multiple ball bearings sliding connection, two sliding members are respectively used to clamp the upper end two wings of busbar.The utility model is provided with multiple ball bearings on the both sides of fixed base to form vertical slide and horizontal slide, two sliding members can slide on vertical slide and horizontal slide, the stability of positioning clamping mechanism is increased by vertical slide and horizontal slide which are perpendicular to each other, when busbar is thermal expansion and cold shrink due to temperature change, busbar can still follow two sliding members along the direction of line direction freely slide, as far as possible avoid busbar appear in use process and appear jam.

Description

Technical Field

[0001] This utility model relates to the field of busbar positioning technology, and in particular to a positioning clamping mechanism and device for overhead contact line busbars. Background Technology

[0002] With the continuous expansion of the subway network in recent years, the overhead contact system, as a crucial device providing power to trains, directly impacts the operational quality and safety of the subway. The busbar positioning and clamping mechanism is a key component of the overhead contact system, used to suspend and position the busbar. During design and installation, slight displacement along the track direction of the busbar is considered, so a certain gap is left between the busbar positioning and clamping mechanism and the busbar to allow for sliding.

[0003] However, existing busbar positioning and clamping mechanisms and busbars are subject to thermal expansion and contraction due to changes in ambient temperature, which can cause jamming (or impede) between the busbars. Busbar jamming can prevent the pantograph from sliding smoothly in the vicinity, resulting in arcing and sparking. It can also cause deformation of the positioning and clamping mechanism, which may lead to the breakage of the insulators connected to the positioning and clamping mechanism, triggering a short circuit trip. Utility Model Content

[0004] This utility model provides a positioning and clamping mechanism and device for overhead contact line busbars to solve the technical problem in the related art where the existing positioning and clamping mechanisms for overhead contact line busbars and the corresponding busbars become stuck and unable to slide when thermally expanded and contracted.

[0005] Firstly, a positioning and clamping mechanism for an overhead contact line busbar is provided, comprising:

[0006] A fixed base, the upper end of which is used to connect an insulator;

[0007] Multiple ball bearings are disposed on both sides of the fixed base to form a vertical slide and a horizontal slide.

[0008] Two sliding members are located on both sides of the fixed base and are slidably connected to the vertical and horizontal slides formed by the multiple balls. The two sliding members are used to clamp the upper two wings of the busbar.

[0009] In some embodiments, the fixed base includes a first horizontal plate and a first vertical plate. The first vertical plate is disposed on the first horizontal plate to form an inverted T-shaped structure. A plurality of the ball bearings are disposed on both sides of the first vertical plate and the upper sides of the first horizontal plate to form a vertical slide and a horizontal slide.

[0010] In some embodiments, the positioning and clamping mechanism of the overhead contact line busbar further includes:

[0011] Two second vertical plates are fixedly connected to the two sides of the first vertical plate respectively, and each second vertical plate is provided with a plurality of first spherical cavities for mounting a plurality of the balls.

[0012] In some embodiments, two second vertical plates are fixedly connected to the first vertical plate by bolt fasteners.

[0013] In some embodiments, each of the second vertical plates is provided with a scale.

[0014] In some embodiments, the positioning and clamping mechanism of the overhead contact line busbar further includes:

[0015] Two second horizontal plates are fixedly connected to the upper sides of the first horizontal plate respectively, and each second horizontal plate is provided with a plurality of second spherical cavities for mounting a plurality of the balls.

[0016] In some embodiments, both the first spherical cavity and the second spherical cavity are coated with conductive grease.

[0017] In some embodiments, each of the sliding members includes a busbar upper pressure plate and a busbar lower pressure plate. The busbar upper pressure plate includes a first vertical portion, a first horizontal portion, a second vertical portion, and a second horizontal portion connected in sequence. The first vertical portion contacts a plurality of balls installed in a plurality of first spherical cavities. The first horizontal portion contacts a plurality of balls installed in a plurality of second spherical cavities. The second horizontal portion is connected to the busbar lower pressure plate by bolt fasteners to clamp an upper wing of the busbar.

[0018] In some embodiments, the upper end of the fixed base is provided with a threaded connecting post.

[0019] Secondly, a positioning and clamping device for an overhead contact line busbar is provided, including the aforementioned positioning and clamping mechanism for the overhead contact line busbar.

[0020] The beneficial effects of the technical solution provided by this utility model include:

[0021] This utility model embodiment provides a positioning and clamping mechanism and device for overhead contact line busbars. Multiple ball bearings are arranged on both sides of the fixed base to form vertical and horizontal slides. Two sliding members that clamp the upper two wings of the busbar are located on both sides of the fixed base and can slide on the vertical and horizontal slides. The mutually perpendicular vertical and horizontal slides increase the stability of the positioning and clamping mechanism. When the busbar expands and contracts due to temperature changes, it can still slide freely along the direction of the line with the two sliding members, thus avoiding jamming of the busbar during use as much as possible. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the positioning and clamping mechanism for an overhead contact line busbar provided in this embodiment of the utility model;

[0024] Figure 2 A front view of a positioning and clamping mechanism for an overhead contact line busbar provided in an embodiment of this utility model;

[0025] Figure 3 A side view of a positioning and clamping mechanism for an overhead contact line busbar provided in an embodiment of this utility model;

[0026] Figure label:

[0027] 1. Fixed base; 11. First horizontal plate; 12. First vertical plate; 13. Threaded connecting column;

[0028] 2. Ball bearings;

[0029] 3. Sliding component; 31. Upper pressure plate of busbar; 311. First vertical part; 312. First horizontal part; 313. Second vertical part; 314. Second horizontal part; 32. Lower pressure plate of busbar;

[0030] 4. Busbar;

[0031] 5. Second vertical plate; 51. First spherical cavity; 52. Ruler;

[0032] 6. Second horizontal plate; 61. Second spherical cavity. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] This utility model embodiment provides a positioning and clamping mechanism for overhead contact line busbars, which can solve the technical problem that the existing positioning and clamping mechanisms for overhead contact line busbars and the corresponding busbars become stuck and unable to slide when thermally expanded and contracted.

[0035] See Figure 1 As shown, this utility model embodiment provides a positioning and clamping mechanism for an overhead contact line busbar, including: a fixed base 1, multiple balls 2 and two sliding parts 3.

[0036] The upper end of the fixed base 1 is used to connect the insulator. Multiple balls 2 are arranged on both sides of the fixed base 1 to form a vertical slide and a horizontal slide. Two sliding members 3 are located on both sides of the fixed base 1 and are slidably connected with the vertical slide and the horizontal slide formed by the multiple balls 2. The two sliding members 3 are respectively used to clamp the upper two wings of the busbar 4.

[0037] The positioning and clamping mechanism for the overhead contact line busbar in this embodiment of the utility model has multiple ball bearings on both sides of the fixed base to form vertical and horizontal slides. The two sliding members that clamp the upper two wings of the busbar are located on both sides of the fixed base and can slide on the vertical and horizontal slides. The mutually perpendicular vertical and horizontal slides increase the stability of the positioning and clamping mechanism. When the busbar expands and contracts due to temperature changes, it can still slide freely along the direction of the line with the two sliding members, so as to avoid jamming of the busbar during use as much as possible.

[0038] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 2 As shown, the fixed base 1 includes a first horizontal plate 11 and a first vertical plate 12. The first vertical plate 12 is disposed on the first horizontal plate 11 to form an inverted T-shaped structure. A plurality of ball bearings 2 are disposed on both sides of the first vertical plate 12 and on both sides of the top of the first horizontal plate 11 to form vertical and horizontal slides. Specifically, each side of the first vertical plate 12 may be provided with two rows of a plurality of ball bearings 2 arranged in an alternating pattern, and the top side of the first horizontal plate 11 may be provided with a row of a plurality of ball bearings 2 at equal intervals.

[0039] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 and Figure 2 As shown, the positioning and clamping mechanism of the overhead contact line busbar further includes: two second vertical plates 5, which are respectively fixedly connected to the two sides of the first vertical plate 12. Each second vertical plate 5 is provided with multiple first spherical cavities 51 for mounting multiple balls 2. One ball 2 can be embedded in a corresponding first spherical cavity 51, can rotate freely within the first spherical cavity 51, and maintains a portion exposed above the surface of the second vertical plate 5 without falling off. Specifically, the second vertical plate 5 can be provided with two rows of staggered arrangement of multiple first spherical cavities 51.

[0040] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 As shown, the two second vertical plates 5 are fixedly connected to the first vertical plate 12 by bolts. The bolts can fix the two second vertical plates 5 to the first vertical plate 12, and at the same time, the bolts can also play a limiting and stopping role, preventing the corresponding two sliding members 3 from sliding out of the slide rail, thus increasing the reliability of the positioning and clamping mechanism.

[0041] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 3 As shown, each of the second vertical plates 5 is equipped with a scale 52. The scale 52 is used to accurately select the initial fixing point during construction and installation based on the installation curve of the busbar 4 and the ambient temperature during installation, so as to achieve the purpose of precise installation.

[0042] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 and Figure 2 As shown, the positioning and clamping mechanism of the overhead contact line busbar further includes two second horizontal plates 6, which are fixedly connected to the upper sides of the first horizontal plate 11 respectively. Each second horizontal plate 6 is provided with multiple second spherical cavities 61 for mounting multiple balls 2. One ball 2 can be embedded in a corresponding second spherical cavity 61, can rotate freely within the second spherical cavity 61, and maintains a portion protruding from the surface of the second horizontal plate 6 without falling off. Specifically, the second horizontal plate 6 can be provided with a row of multiple second spherical cavities 61 at equal intervals.

[0043] As an optional implementation, in one embodiment of the invention, both the first spherical cavity 51 and the second spherical cavity 61 are coated with conductive grease. The conductive grease increases conductivity while reducing the rolling resistance of the balls 2.

[0044] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 As shown, each of the sliding members 3 includes a busbar upper pressure plate 31 and a busbar lower pressure plate 32. The busbar upper pressure plate 31 includes a first vertical part 311, a first horizontal part 312, a second vertical part 313, and a second horizontal part 314 connected in sequence. The first vertical part 311 contacts a plurality of balls 2 installed in a plurality of first spherical cavities 51. The first horizontal part 312 contacts a plurality of balls 2 installed in a plurality of second spherical cavities 61. The second horizontal part 314 is connected to the busbar lower pressure plate 32 by bolt fasteners to clamp one wing of the upper end of the busbar 4. The structure is simple and easy to use. After the two sliding members 3 are connected to the two wings of the upper end of the busbar 4, they are just suspended on the fixed base 1 with the inverted T-shaped structure and can slide.

[0045] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 3 As shown, the top of the fixed base 1 is provided with a threaded connecting post 13, which facilitates the connection of the upper end of the fixed base 1 to an insulator. To achieve a better tightening effect, an adjusting nut can be installed on the upper end of the fixed base 1.

[0046] This utility model embodiment also provides a positioning and clamping device for an overhead contact line busbar, including the aforementioned positioning and clamping mechanism for the overhead contact line busbar.

[0047] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0048] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A positioning and clamping mechanism for an overhead contact line busbar, characterized in that, include: A fixed base (1) is provided, the upper end of which is used to connect an insulator; Multiple ball bearings (2) are disposed on both sides of the fixed base (1) and form a vertical slide and a horizontal slide; Two sliding members (3) are located on both sides of the fixed base (1) and are slidably connected to the vertical and horizontal slides formed by the multiple balls (2). The two sliding members (3) are respectively used to clamp the upper two wings of the busbar (4).

2. The positioning and clamping mechanism for the overhead contact line busbar according to claim 1, characterized in that: The fixed base (1) includes a first horizontal plate (11) and a first vertical plate (12). The first vertical plate (12) is disposed on the first horizontal plate (11) to form an inverted T-shaped structure. A plurality of the ball bearings (2) are disposed on both sides of the first vertical plate (12) and on both sides of the top of the first horizontal plate (11) to form a vertical slide and a horizontal slide.

3. The positioning and clamping mechanism for the overhead contact line busbar according to claim 2, characterized in that, Also includes: Two second vertical plates (5) are fixedly connected to the two sides of the first vertical plate (12) respectively. Each second vertical plate (5) is provided with a plurality of first spherical cavities (51) for mounting a plurality of the balls (2).

4. The positioning and clamping mechanism for the overhead contact line busbar according to claim 3, characterized in that: The two second vertical plates (5) are fixedly connected to the first vertical plate (12) by bolt fasteners.

5. The positioning and clamping mechanism for the overhead contact line busbar according to claim 3, characterized in that: Each of the second vertical plates (5) is provided with a scale (52).

6. The positioning and clamping mechanism for the overhead contact line busbar according to claim 3, characterized in that, Also includes: Two second horizontal plates (6) are fixedly connected to the upper sides of the first horizontal plate (11) respectively, and each second horizontal plate (6) is provided with a plurality of second spherical cavities (61) for mounting a plurality of the balls (2).

7. The positioning and clamping mechanism for overhead contact line busbars according to claim 6, characterized in that: Both the first spherical cavity (51) and the second spherical cavity (61) are coated with conductive grease.

8. The positioning and clamping mechanism for the overhead contact line busbar according to claim 6, characterized in that: Each of the sliding members (3) includes a busbar upper pressure plate (31) and a busbar lower pressure plate (32). The busbar upper pressure plate (31) includes a first vertical part (311), a first horizontal part (312), a second vertical part (313), and a second horizontal part (314) connected in sequence. The first vertical part (311) contacts a plurality of balls (2) installed in a plurality of first spherical cavities (51). The first horizontal part (312) contacts a plurality of balls (2) installed in a plurality of second spherical cavities (61). The second horizontal part (314) is connected to the busbar lower pressure plate (32) by bolt fasteners to clamp the upper wing of the busbar (4).

9. The positioning and clamping mechanism for the overhead contact line busbar according to claim 1, characterized in that: The upper end of the fixed base (1) is provided with a threaded connecting post (13).

10. A positioning and clamping device for an overhead contact line busbar, characterized in that, The positioning and clamping mechanism for overhead contact line busbars as described in any one of claims 1-9.

Images