Distance-adjustable high-speed rail overhead line system fastener

Abstract

The utility model discloses a distance-adjustable high-speed rail contact network fastener, which comprises a hollow screw sleeve, an outer wall of which is provided with an external thread screwed with a screw hole on a high-speed rail contact network, an inner wall of which is provided with an internal thread, and upper and lower end faces of which are provided with a plurality of first jacks; the upper bolt is in threaded connection with the upper end of the internal thread; the first plug-in is plugged on the hollow screw sleeve and the upper bolt and is used for positioning the hollow screw sleeve and the upper bolt; the lower bolt is screwed at the lower end of the internal thread; and the second plug-in is plugged on the hollow screw sleeve and the lower bolt and is used for positioning the hollow screw sleeve and the lower bolt. The length and distance of the fastener can be adjusted by controlling the screwing sizes of the upper bolt and the lower bolt in the internal threads and the plugging positioning of the plug-in unit, and the fastener is convenient to operate, assemble and use, wide in applicability, high in screwing tightness with a high-speed rail overhead line system mounting hole and stable in screwing tightness with the high-speed rail overhead line system mounting hole.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a high-speed railway contact network fastener with adjustable distance. Background Art

[0002] As an outdoor facility, the structure of the high-speed rail contact network makes the length span of the mounting holes and bolts relatively large, and the commonly used fasteners are mostly fixed. Therefore, in order to fix the multi-sized mounting holes on the high-speed rail contact network, it is necessary to carry fasteners of multiple sizes to ensure complete fit, which results in high transportation costs. During actual on-site assembly, the size deviation of the components makes the fasteners insufficiently tightened. Utility Model Content

[0003] The purpose of the utility model is to solve the problem that for the fixation of multi-sized mounting holes on the high-speed railway contact network, commonly used fasteners are mostly fixed, so it is necessary to carry fasteners of multiple sizes to ensure complete adaptation, which has a high transportation cost. During actual on-site assembly, the size deviation of the components makes the fasteners insufficiently tightened, and a high-speed railway contact network fastener with an adjustable distance is provided.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a high-speed railway contact network fastener with adjustable distance, comprising:

[0005] The hollow screw sleeve has an outer wall provided with an external thread that is screwed to the screw hole on the high-speed railway contact network, an inner wall provided with an internal thread, and a plurality of first plug holes are provided on the upper and lower end surfaces;

[0006] An upper bolt, screwed onto the upper end of the internal thread;

[0007] The first plug-in unit is inserted into the hollow screw sleeve and the upper bolt to position the two;

[0008] A lower bolt, screwed to the lower end of the internal thread;

[0009] The second plug-in unit is plugged into the hollow screw sleeve and the lower bolt to position the two.

[0010] As a further description of the above technical solution:

[0011] The upper bolt comprises a first nut and a first stud threadedly connected with the internal thread. The first nut is provided with a second insertion hole corresponding to the top of the first plug-in.

[0012] As a further description of the above technical solution:

[0013] The first plug-in is a π-shaped plug-in composed of a top plate and a plurality of first plug-in rods, the number of the first plug-in rods is less than the number of the first plug-in holes on the corresponding end face of the hollow screw sleeve, the first plug-in rods are inserted into the second plug-in hole and the first plug-in hole in sequence, and the top plate is embedded in the second plug-in hole.

[0014] As a further description of the above technical solution:

[0015] The lower bolt comprises a second nut and a second stud threadedly connected with the internal thread. The second nut is provided with a third insertion hole corresponding to the top of the second plug-in unit.

[0016] As a further description of the above technical solution:

[0017] The second plug-in includes a base plate, a limiting kit located at the edge of the base plate, and a plurality of second plug rods. The number of the second plug rods is less than the number of the first plug holes on the corresponding end face of the hollow screw sleeve. The second plug rods are inserted into the third plug hole and the first plug hole in sequence. The limiting kit is sleeved on the second nut. The horizontal cross-sectional dimension of the base plate is smaller than the horizontal cross-sectional dimension of the outer wall of the hollow screw sleeve.

[0018] As a further description of the above technical solution:

[0019] The hollow screw sleeve is filled with elastic elements between the upper bolt and the lower bolt.

[0020] In summary, due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0021] 1. This fastener is used for screwing and fixing the structure on the high-speed railway contact network. In order to improve the screwing adaptability of the fastener to the screw holes of multiple lengths and sizes on the high-speed railway contact network, the hollow screw sleeve is screwed with the upper and lower bolts and the lower bolts, and the plug-in is used for insertion and positioning, thereby realizing the circumferential positioning of the bolts and the hollow screw sleeve, as well as the axial positioning of the two, so that the length distance of the fastener is fixed, and the length distance of the fastener is adjusted by controlling the screwing size of the upper bolt and the lower bolt in the internal thread. The operation and assembly are convenient, the applicability is wide, and the degree of tightness and stability of screwing with the installation hole of the high-speed railway contact network is high.

[0022] 2. The first π-shaped plug-in and the second plug-in provided with a limiter set sleeved on the outside of the lower bolt cooperate with the elastic member filled between the upper bolt and the lower bolt in the hollow screw sleeve to further improve the positioning stability of the bolt and the hollow screw sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The present invention is a front cross-sectional view of a high-speed railway contact network fastener with adjustable distance.

[0025] Figure 2 The present invention is a disassembled cross-sectional view of the connection structure of a hollow threaded sleeve, an upper bolt and a first plug-in unit in a high-speed railway contact network fastener with adjustable distance.

[0026] Figure 3 The present invention is a disassembled cross-sectional view of the connection structure of a hollow threaded sleeve, a lower bolt and a second plug-in unit in a high-speed railway contact network fastener with adjustable distance.

[0027] Figure 4 The figure is a schematic diagram of the structure of a high-speed railway contact network fastener with adjustable distance.

[0028] Legend:

[0029] 1. Hollow thread sleeve; 11. External thread; 12. Internal thread; 13. First socket; 2. Upper bolt; 21. First nut; 22. First stud; 23. Second socket; 3. First plug-in; 31. Top plate; 32. First plug-in rod; 4. Lower bolt; 41. Second nut; 42. Second stud; 43. Third socket; 5. Second plug-in; 51. Bottom plate; 52. Limiting kit; 53. Second plug-in rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] See also Figure 1-4 The utility model provides a technical solution: a high-speed railway contact network fastener with adjustable distance, comprising:

[0033] A hollow screw sleeve 1, the outer wall of which is provided with an external thread 11 screwed to a screw hole on the high-speed rail contact network, the inner wall of which is provided with an internal thread 12, and the upper and lower end surfaces are both provided with a plurality of first insertion holes 13;

[0034] The upper bolt 2 is screwed to the upper end of the internal thread 12;

[0035] The first plug-in unit 3 is inserted into the hollow screw sleeve 1 and the upper bolt 2 to position the two.

[0036] The lower bolt 4 is screwed to the lower end of the internal thread 12;

[0037] The second plug-in unit 5 is inserted into the hollow screw sleeve 1 and the lower bolt 4 to position the two.

[0038] The present fastener is used for screwing and fixing structures on high-speed railway contact networks. In order to improve the screwing adaptability of the fastener to screw holes of various lengths and sizes on the high-speed railway contact network, a hollow screw sleeve 1 is screwed with upper and lower bolts 2 and lower bolts 4 at the upper and lower ends, and the first plug-in 3 and the second plug-in 5 are plugged in and positioned, thereby realizing circumferential positioning of the bolts and the hollow screw sleeve 1, and realizing axial positioning of the two through the screwing structure, so that the length distance of the fastener is fixed, and the length distance of the fastener is adjusted by controlling the screwing size of the upper bolt 2 and the lower bolt 4 in the internal thread 12. The fastener is easy to operate, assemble and use, has a wide range of applicability, and is highly and stably screwed tightly with the installation hole of the high-speed railway contact network.

[0039] In this embodiment, the specific structure of the upper bolt 2 includes a first nut 21 and a first stud 22 threadedly connected to the internal thread 12 , and a second insertion hole 23 corresponding to the top of the first plug-in 3 is provided on the first nut 21 .

[0040] At the same time, the first plug-in 3 corresponding to the upper bolt 2 is a π-shaped plug-in composed of a top plate 31 and a plurality of first plug rods 32. The number of the first plug rods 32 is less than the number of the first plug holes 13 on the corresponding end face of the hollow screw sleeve 1. The first plug rods 32 are inserted into the second plug hole 23 and the first plug hole 13 in sequence, and the top plate 31 is embedded in the second plug hole 23, thereby improving the stability of the circumferential positioning of the upper bolt 2 and the hollow screw sleeve 1.

[0041] Preferably, the lower bolt 4 includes a second nut 41 and a second stud 42 threadedly connected to the internal thread 12 , and a third insertion hole 43 corresponding to the top of the second plug-in 5 is provided on the second nut 41 .

[0042] At the same time, the corresponding second plug-in 5 includes a bottom plate 51, a stopper set 52 located at the edge of the bottom plate 51, and a plurality of second plug rods 53. The number of the second plug rods 53 is less than the number of the first plug holes 13 on the corresponding end face of the hollow screw sleeve 1. The second plug rods 53 are inserted into the third plug hole 43 and the first plug hole 13 in sequence. The stopper set 52 is sleeved on the second nut 41. The horizontal cross-sectional size of the bottom plate 51 is less than the horizontal cross-sectional size of the outer wall of the hollow screw sleeve 1. Through the above design, the stability of the positioning of the lower bolt 4 and the hollow shaft sleeve 1 is further improved. In this embodiment, the bottom plate 51 can be selected as a cylinder or a polygonal prism.

[0043] The first plug rod 32 and the second plug rod 53 need to overcome the shear force when the fastener is screwed, so the first plug-in unit 3 and the second plug-in unit 5 are made of highly tough steel.

[0044] In addition, an elastic member is filled between the upper bolt 2 and the lower bolt 4 in the hollow threaded sleeve 1 to further improve the positioning stability of the bolt and the hollow threaded sleeve 1 .

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-speed railway contact network fastener with adjustable distance, characterized in that: include: The hollow screw sleeve has an outer wall provided with an external thread that is screwed to the screw hole on the high-speed railway contact network, an inner wall provided with an internal thread, and a plurality of first plug holes are provided on the upper and lower end surfaces; An upper bolt, screwed onto the upper end of the internal thread; A first plug-in unit is inserted into the hollow screw sleeve and the upper bolt to position the two; A lower bolt, screwed on the lower end of the internal thread; The second plug-in unit is plugged into the hollow screw sleeve and the lower bolt to position the two.

2. The high-speed railway contact network fastener with adjustable distance according to claim 1, characterized in that: The upper bolt includes a first nut and a first stud threadedly connected to the internal thread, and the first nut is provided with a second insertion hole corresponding to the top of the first plug-in.

3. The high-speed railway contact network fastener with adjustable distance according to claim 2, characterized in that: The first plug-in is a π-shaped plug-in composed of a top plate and a plurality of first plug rods, the number of the first plug rods is less than the number of the first plug holes on the corresponding end face of the hollow screw sleeve, the first plug rods are inserted into the second plug hole and the first plug hole in sequence, and the top plate is embedded in the second plug hole.

4. The high-speed railway contact network fastener with adjustable distance according to claim 1, characterized in that: The lower bolt comprises a second nut and a second stud threadedly connected with the internal thread, and the second nut is provided with a third insertion hole corresponding to the top of the second plug-in.

5. The high-speed railway contact network fastener with adjustable distance according to claim 4, characterized in that: The second plug-in includes a base plate, a limiting kit located at the edge of the base plate, and a plurality of second plug rods, the number of the second plug rods is less than the number of the first plug holes on the corresponding end face of the hollow screw sleeve, the second plug rods are inserted into the third plug hole and the first plug hole in sequence, the limiting kit is sleeved on the second nut, and the horizontal cross-sectional dimension of the base plate is smaller than the horizontal cross-sectional dimension of the outer wall of the hollow screw sleeve.

6. The high-speed railway contact network fastener with adjustable distance according to claim 1, characterized in that: The hollow screw sleeve is filled with an elastic member between the upper bolt and the lower bolt.

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