Height-adjustable fastener system

Abstract

The utility model relates to a fastener system with adjustable height, which relates to the technical field of rail fasteners, is assembled above a sleeper, and comprises a fastener main body, a height adjusting component, at least two studs and at least two pre-embedded sleeves, the height adjusting assembly is arranged between the fastener body and the sleeper, the at least two embedded sleeves are arranged in the sleeper, one ends of the at least two studs are connected with the fastener body, and the other ends of the at least two studs penetrate through the height adjusting assembly to be connected with the embedded sleeves. The height adjusting assembly comprises an upper-layer adjusting base plate and a lower-layer adjusting base plate which are sequentially arranged in the vertical direction, and an adjusting structure matched in a concave-convex mode is arranged between the upper-layer adjusting base plate and the lower-layer adjusting base plate. According to the fastener system, the height gap between the upper-layer adjusting base plate and the lower-layer adjusting base plate is adjusted through the adjusting structure, the fastener system is integrally fixed to the sleeper through the studs, and the purpose of large-height adjustment of the fastener system can be achieved under the condition that the stability of the fastener system at the high installation height is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of track fasteners, in particular to a fastener system with adjustable height. Background Art

[0002] With the large-scale construction of passenger dedicated lines and intercity rapid lines, more and more ballastless track structures are used. After the ballastless track structure is built, it is difficult to change its geometric shape. Since the terrain of many current road sections is relatively complex and construction is not easy, in order to overcome the track unevenness caused by basic engineering construction errors and uneven roadbed settlement, the fastener system must have a large ability to adjust the height and left and right position of the rails, so the development of a large adjustment fastener system is urgent.

[0003] At present, ordinary railway fasteners mostly use a combination of under-track height adjustment and under-plate height adjustment to enable the fasteners to adjust the installation height. However, as the height of the fastener increases, the shear torque on the anchor bolts that fix the fasteners also increases, which affects the stability of the fasteners and limits the height adjustment of the railway fasteners. At present, the height adjustment of ordinary fasteners is less than 40mm, which can only meet ordinary height adjustment requirements. When the height adjustment requirement is greater than 40mm, the method of raising the entire roadbed and pouring mortar under the roadbed is often used. This method is difficult to construct and has a long construction period, which affects the normal operation of the subway. Utility Model Content

[0004] In view of one or more of the above defects or improvement needs of the prior art, the utility model provides a height-adjustable fastener system, which solves the problem that the fastener system is difficult to adjust in a large amount of height.

[0005] To achieve the above object, the utility model provides a height-adjustable fastener system, which is installed above the sleeper.

[0006] The fastener system comprises a fastener body, a height adjustment assembly, at least two stud bolts and at least two embedded sleeves; the height adjustment assembly is arranged between the fastener body and the sleeper, at least two embedded sleeves are arranged in the sleeper, at least two stud bolts are connected to the fastener body at one end, and the other end passes through the height adjustment assembly and is connected to the embedded sleeves;

[0007] The height adjustment assembly comprises an upper adjustment pad and a lower adjustment pad which are arranged in sequence along the vertical direction, and a concave-convex adjustment structure is arranged between the two to adjust the height gap between the upper adjustment pad and the lower adjustment pad.

[0008] As a further improvement of the utility model, at least two countersunk holes are provided on the upper adjustment pad, and at least two first through holes are provided on the lower adjustment pad, and the countersunk holes, the first through holes and the embedded sleeves correspond to each other in the vertical direction;

[0009] The stud bolt includes a bolt head and an upper threaded portion and a lower threaded portion respectively arranged at both ends thereof; the upper threaded portion passes through the fastener body and is connected to the nut, and the lower threaded portion passes through the countersunk hole and the first through hole in sequence and is connected to the embedded sleeve, so that the bolt head sinks into the countersunk hole.

[0010] As a further improvement of the utility model, the adjustment structure includes a groove arranged at the bottom of the upper adjustment pad and a column arranged at the top of the lower adjustment pad, or the adjustment structure includes a column arranged at the bottom of the upper adjustment pad and a groove arranged at the top of the lower adjustment pad; the column is matched and connected with the groove.

[0011] As a further improvement of the present invention, the column is a polygonal column or a cylinder; correspondingly, the groove is a polygonal groove or a cylindrical groove.

[0012] As a further improvement of the utility model, the column is a cylinder, the groove is a cylindrical groove, and the outside of the cylinder is provided with an external thread, and the inside of the cylindrical groove is provided with a corresponding internal thread.

[0013] As a further improvement of the present invention, the height adjustment assembly further includes a compensation plate, and the compensation plate is arranged in the gap between the upper adjustment pad and the lower adjustment pad.

[0014] As a further improvement of the present invention, the compensation plate includes two splicing units, and a notch is provided on one side of the splicing units close to each other, and the two splicing units can be spliced ​​in the horizontal direction so that the notch fits the outer periphery of the adjustment structure;

[0015] The two splicing units are each provided with a second through hole for the stud bolt to pass through.

[0016] As a further improvement of the present invention, there are two countersunk holes and two first through holes, and the two countersunk holes and the two first through holes are respectively arranged on both sides of the upper adjustment pad and the lower adjustment pad in the diagonal direction.

[0017] As a further improvement of the present invention, the fastener system further comprises an insulating pad, wherein the insulating pad is arranged between the fastener body and the height adjustment assembly; and / or,

[0018] The fastener system further comprises a coupling plate disposed between the height adjustment assembly and the sleeper.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0020] (1) The height-adjustable fastener system of the utility model adjusts the height gap between the upper adjustment pad and the lower adjustment pad by means of an adjustment structure, and fixes the height-adjustable fastener system as a whole on the sleeper by means of stud bolts, thereby achieving the purpose of adjusting the fastener system to a large extent in height while ensuring the stability of the fastener system at a high installation height.

[0021] (2) The height-adjustable fastener system of the utility model can simply and quickly increase the height adjustment amount of the fastener by only changing the fastener. The construction is simple and fast, does not affect the normal operation of rail transit, and has low maintenance costs. It can meet the height adjustment requirements of special working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a fastener system according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the height adjustment assembly structure of an embodiment of the utility model;

[0024] Figure 3 A cross-sectional view of a height adjustment assembly connected by a threaded post according to an embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the upper adjustment pad connected by threaded columns according to an embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the lower adjustment pad connected by threaded columns according to an embodiment of the utility model;

[0027] Figure 6 A cross-sectional view of a height adjustment assembly connected by a polygonal column according to an embodiment of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the upper adjustment pad connected by polygonal columns according to an embodiment of the utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the lower adjustment pad connected by polygonal columns according to an embodiment of the utility model;

[0030] Fig. 9 This is a schematic diagram of the compensation plate structure of an embodiment of the utility model;

[0031] Fig.10This is a schematic diagram of the structure of a splicing unit according to an embodiment of the utility model;

[0032] Fig.11 This is a schematic diagram of the stud bolt structure of an embodiment of the utility model.

[0033] In all the drawings, the same figure marks represent the same technical features, specifically: 1. fastener body; 2. height adjustment assembly; 201. upper adjustment pad; 202. lower adjustment pad; 203. countersunk hole; 204. first through hole; 205. threaded groove; 206. threaded column; 207. polygonal groove; 208. polygonal column; 3. stud bolt; 301. bolt head; 302. upper threaded portion; 303. lower threaded portion; 4. embedded sleeve; 5. compensation plate; 501. second through hole; 502. notch; 6. insulating pad; 7. coupling pad. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] In the description of the present invention, it is to 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”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0036] 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 at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely 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" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] See also Figure 1-11 In the embodiment of the utility model, a height-adjustable fastener system is fixed to the rail sleeper, and a large amount of height adjustment of the fastener system is achieved by adjusting the height gap in the height adjustment component. At the same time, combined with the anchoring structure, the stability of the fastener system at a high installation height can be ensured.

[0040] Specifically, if Figure 1 As shown in the figure, a preferred fastener system in an embodiment of the utility model is assembled above the sleeper, and the fastener system includes a fastener body 1, a height adjustment component 2, at least two stud bolts 3 and at least two embedded sleeves 4; wherein, the height adjustment component 2 is arranged between the fastener body 1 and the sleeper, at least two embedded sleeves 4 are arranged in the sleeper, and at least two stud bolts 3 are connected to the fastener body 1 at one end, and the other end passes through the height adjustment component 2 and is connected to the embedded sleeve 4.

[0041] Furthermore, if Figure 2As shown, the height adjustment assembly 2 includes an upper adjustment pad 201 and a lower adjustment pad 202 arranged in sequence along the vertical direction, and a concave-convex matching adjustment structure is arranged between the upper adjustment pad 201 and the lower adjustment pad 202, which is used to adjust the height gap between the upper adjustment pad 201 and the lower adjustment pad 202. In addition, at least two countersunk holes 203 are arranged on the upper adjustment pad 201, and at least two first through holes 204 are arranged on the lower adjustment pad 202, and the countersunk holes 203, the first through holes 204 and the embedded sleeve 4 correspond to each other in the vertical direction. After the upper adjustment pad 201 and the lower adjustment pad 202 complete the height adjustment operation, one end of the stud bolt 3 passes through the countersunk hole 203 of the upper adjustment pad 201 and the first through hole 204 of the lower adjustment pad 202 in sequence, and is assembled into the embedded sleeve 4.

[0042] Preferably, there are two countersunk holes 203 and two first through holes 204 , and the two countersunk holes 203 and the two first through holes 204 are respectively arranged on both sides of the upper adjustment pad 201 and the lower adjustment pad 202 in the diagonal direction.

[0043] Furthermore, if Fig.11 As shown, the stud bolt 3 in the preferred embodiment of the utility model comprises a bolt head 301, an upper threaded portion 302, a lower threaded portion 303 and a nut, wherein the bolt head 301 is arranged between the upper threaded portion 302 and the lower threaded portion 303. The upper threaded portion 302 passes through the fastener body 1 and is connected with the nut to realize the assembly of the fastener body 1; the lower threaded portion 303 passes through the height adjustment component 2 and is threadedly connected with the embedded sleeve 4, and the bolt head 301 is sunk into the countersunk hole 203, thereby realizing the fixing of the height-adjustable fastener system on the sleeper.

[0044] In the height-adjustable fastener system of the utility model, a stud bolt 3 is provided as an anchoring structure, and the bolt head 301 can be sunk into the countersunk hole 203 of the upper adjustment pad 201. Under the condition of the same adjustment height, the shear force remains unchanged, while the force arm of the bolt under the same condition is reduced. The shear torque of the fastener system on the stud bolt 3 is also reduced accordingly, thereby improving the shear resistance of the stud bolt 3 and ensuring the stability of the fastener at the installation height.

[0045] Further preferably, the adjustment structure includes a groove arranged at the bottom of the upper adjustment pad 201 and a column arranged at the top of the lower adjustment pad 202, or the adjustment structure includes a column arranged at the bottom of the upper adjustment pad 201 and a groove arranged at the top of the lower adjustment pad 202; the column is matched and connected with the groove. Further preferably, the column is a polygonal column 208 or a cylinder; correspondingly, the groove is a polygonal groove 207 or a cylindrical groove, so that the upper adjustment pad 201 can move vertically relative to the lower adjustment pad 202, thereby adjusting the height gap between the two, and realizing the height adjustment of the fastener system. More preferably, the column is a cylinder, the groove is a cylindrical groove, and the cylinder is provided with an external thread, and the cylindrical groove is provided with a corresponding internal thread, and the height gap between the upper adjustment pad 201 and the lower adjustment pad 202 can be adjusted by relative rotation, and the height adjustment of the fastener system can be realized.

[0046] In a specific embodiment, Figure 3 , 4 and Figure 5 As shown in , the adjustment structure includes a threaded groove 205 arranged at the bottom of the upper adjustment pad 201 and a threaded column 206 arranged at the top of the lower adjustment pad 202. The threaded column 206 is matched and connected with the threaded groove 205, thereby realizing the connection between the upper adjustment pad 201 and the lower adjustment pad 202. In actual use, the operator can adjust by rotating the upper adjustment pad 201, and adjust the height gap between the upper adjustment pad 201 and the lower adjustment pad 202 according to the number of rotations, so as to achieve the purpose of automatically adjusting the height of the height-adjustable fastener system.

[0047] In another specific embodiment, Figure 6 , Figure 7 and Figure 8 As shown in the figure, the adjustment structure includes a polygonal groove 207 arranged at the bottom of the upper adjustment pad 201 and a polygonal column 208 arranged at the top of the lower adjustment pad 202. The polygonal column 208 is matched and connected with the polygonal groove 207, thereby realizing the connection between the upper adjustment pad 201 and the lower adjustment pad 202. During actual use, the operator can lift the upper adjustment pad 201 and adjust the height gap between the upper adjustment pad 201 and the lower adjustment pad 202, so as to achieve the purpose of automatic height adjustment of the height-adjustable fastener system.

[0048] Furthermore, if Fig. 9 As shown, the height adjustment assembly 2 also includes a compensation plate 5, which is arranged in the gap between the upper adjustment pad 201 and the lower adjustment pad 202 to improve the stability of the overall height adjustment assembly 2 after the upper adjustment pad 201 and the lower adjustment pad 202 are adjusted in height.

[0049] It should be noted that in actual application, the height of the compensation plate 5 can be flexibly set according to the height difference between the upper adjustment pad 201 and the lower adjustment pad 202. Therefore, the specific height of the compensation plate 5 is not limited here and can be selected according to actual conditions.

[0050] More preferably, if Fig.10 As shown, the compensation plate 5 includes two splicing units, which can be spliced ​​in the horizontal direction, and a notch 502 is provided on the side where the two splicing units are close to each other, so that the notch 502 of the two splicing units can fit the outer periphery of the adjustment structure after splicing. In addition, the two splicing units are both provided with a second through hole 501 for the stud bolt 3 to pass through.

[0051] In a preferred embodiment, the fastener system also includes an insulating pad 6 and a coupling pad 7. The insulating pad 6 is arranged between the fastener body 1 and the height adjustment component 2 to provide additional insulation protection and reduce the risk of electric shock; the coupling pad 7 is arranged between the height adjustment component 2 and the sleeper, which can reduce the wear of the height adjustment component 2 by the sleeper and increase the service life of the height adjustment component.

[0052] The height-adjustable fastener system of the embodiment of the utility model can simply and quickly increase the height adjustment amount of the fastener by only changing the fastener. The construction is simple and fast, does not affect the normal operation of rail transit, and has low maintenance costs, and can meet the height adjustment needs of special working conditions.

[0053] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A height-adjustable fastener system, mounted above a sleeper, characterized in that: The fastener system comprises a fastener body (1), a height adjustment component (2), at least two stud bolts (3) and at least two embedded sleeves (4); the height adjustment component (2) is arranged between the fastener body (1) and the sleeper, the at least two embedded sleeves (4) are arranged inside the sleeper, and at least two stud bolts (3) have one end connected to the fastener body (1) and the other end passing through the height adjustment component (2) and connected to the embedded sleeves (4); The height adjustment assembly (2) comprises an upper adjustment pad (201) and a lower adjustment pad (202) which are arranged in sequence along the vertical direction, and a concave-convex matching adjustment structure is arranged between the two to adjust the height gap between the upper adjustment pad (201) and the lower adjustment pad (202).

2. The height-adjustable fastener system according to claim 1, characterized in that: The upper adjustment pad (201) is provided with at least two countersunk holes (203), and the lower adjustment pad (202) is provided with at least two first through holes (204), and the countersunk holes (203), the first through holes (204) and the embedded sleeve (4) correspond to each other in the vertical direction; The stud bolt (3) comprises a bolt head (301) and an upper threaded portion (302) and a lower threaded portion (303) respectively provided at two ends thereof; the upper threaded portion (302) passes through the fastener body (1) and is connected to the nut, and the lower threaded portion (303) passes through the countersunk hole (203) and the first through hole (204) in sequence and is connected to the embedded sleeve (4), so that the bolt head (301) is sunk into the countersunk hole (203).

3. The height-adjustable fastener system according to claim 1 or 2, characterized in that: The adjustment structure comprises a groove arranged at the bottom of the upper adjustment pad (201) and a column arranged at the top of the lower adjustment pad (202); or the adjustment structure comprises a column arranged at the bottom of the upper adjustment pad (201) and a groove arranged at the top of the lower adjustment pad (202); the column is matched and connected with the groove.

4. The height-adjustable fastener system according to claim 3, characterized in that: The pillar is a polygonal pillar (208) or a cylinder; Correspondingly, the groove is a polygonal groove (207) or a cylindrical groove.

5. The height-adjustable fastener system according to claim 4, characterized in that: The column is a cylinder, the groove is a cylindrical groove, and an external thread is arranged outside the cylinder, and a corresponding internal thread is arranged inside the cylindrical groove.

6. The height-adjustable fastener system according to any one of claims 1, 2, 4 and 5, characterized in that: The height adjustment assembly (2) further comprises a compensation plate (5), wherein the compensation plate (5) is arranged in the gap between the upper adjustment pad (201) and the lower adjustment pad (202).

7. The height-adjustable fastener system according to claim 6, characterized in that: The compensation plate (5) comprises two splicing units, and a notch (502) is provided on one side of the splicing units close to each other. The two splicing units can be spliced ​​in the transverse direction so that the notch (502) fits the outer periphery of the adjustment structure; The two splicing units are each provided with a second through hole (501) for the stud bolt (3) to pass through.

8. The height-adjustable fastener system according to claim 2, characterized in that: There are two countersunk holes (203) and two first through holes (204), and the two countersunk holes (203) and the two first through holes (204) are respectively arranged on both sides of the upper adjustment pad (201) and the lower adjustment pad (202) in the diagonal direction.

9. The height-adjustable fastener system according to any one of claims 1, 2, 4, 5, and 7, characterized in that: The fastener system further comprises an insulating pad (6), wherein the insulating pad (6) is arranged between the fastener body (1) and the height adjustment assembly (2); and / or, The fastener system further comprises a coupling pad (7), wherein the coupling pad (7) is arranged between the height adjustment assembly (2) and the sleeper.

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