A rail quick clamping device used for railway track bed

Abstract

The present invention discloses a rail fast clamping device for railway track bed, comprising rail clamping device components, connecting rectangular square tubes, emergency repair pillars, pillar cross beams, pillar legs, and a differential bolt fastening mechanism; the connecting rectangular square tubes are divided into two groups, and the two groups of connecting rectangular square tubes are arranged at intervals; one end of each group of connecting rectangular square tubes is connected to the rail clamping device components by a differential bolt fastening mechanism, and the other end of each group of connecting rectangular square tubes is provided with an emergency repair pillar; the base of the emergency repair pillar is connected to the pillar cross beam by bolts, and pillar legs are provided on the lower sides of both ends of the pillar cross beam; the rail clamping device components are used to clamp the rail body in a limited space. The technical effect achieved is that it can achieve a clamped and fixed connection with the rail in the limited space of a ballastless railway (it can also be used for a ballasted railway track), and based on its specially designed clamping claw structure and force form, it has the characteristics of small size, impact resistance, deformation resistance, not easy to fall off, and stable clamping.

Description

Technical Field

[0001] The present invention relates to the field of railway technology, in particular to a rail quick clamping device applied to a railway track bed, and more particularly to a rail quick clamping device applied to a narrow space of a ballastless (or ballasted) track. Background Art

[0002] In high-speed electrified railway sections, when emergency repairs are required after an accident or failure in the contact network, temporary emergency repair pillars must be erected in the faulty section to mount the contact network and ensure its normal operation. At this time, the temporary emergency repair pillars need to be easy to carry, quick to install, and sufficiently stable. The current method of fixing the pillars is to use the anchor bolts of the original pillars to fix the temporary emergency repair pillars, but it is also necessary to add a conversion base between the emergency repair pillars and the anchor bolts. The conversion base weighs more than 70kg, resulting in inconvenience in emergency repairs and slow installation. When a major accident such as a train derailment occurs, the original pillars and anchor bolts are damaged and cannot be used. At this time, the only option is to re-cast the base and then install a temporary emergency repair pillar tower. This undoubtedly greatly increases the workload of the emergency repair work and takes up the limited emergency repair construction time. It does not conform to the current principle of "open first, then restore" for railway accident emergency repairs.

[0003] Another approach is to reliably connect temporary support towers used for emergency repairs to the rails to ensure they can withstand the impact vibrations generated by the pantograph and catenary when a train slowly passes over them. However, due to the particularity of ballastless track (where sleepers are typically embedded or embedded in a concrete rigid bearing layer, with the vertical distance between the rails and the concrete rigid bearing layer being very limited, typically no more than 60mm), there is currently no equipment or product that can reliably connect to the rails within this confined space and provide sufficient stability for temporary support towers used for emergency repairs.

[0004] Therefore, there is an urgent need for a (or a type of) rail quick clamping device that can be applied to railway ballastless track beds. When an accident (failure) occurs in the railway contact network or a major accident such as a train derailment occurs, resulting in damage to the anchor bolts, the clamping device can be used to effectively, stably and quickly fix the temporary support tower used for emergency repairs to the rails, thereby improving the efficiency of emergency repairs, shortening the accident handling time, and effectively ensuring the smooth restoration of traffic on the damaged railway section.

[0005] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information is already known as the prior art to those skilled in the art. Summary of the Invention

[0006] To this end, the present invention provides a rail quick clamping device for railway track beds to solve the above-mentioned problems in the prior art. The device can be used on ballastless (or ballasted) railway track beds and has the characteristics of small size, easy disassembly and assembly, impact resistance, deformation resistance, not easy to fall off, and stable clamping.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] According to a first aspect of the present invention, a rail fast clamping device for use in a railway track bed comprises rail clamping device components, connecting rectangular square tubes, emergency repair posts, post crossbeams, post legs, and a differential bolt fastening mechanism;

[0009] There are two groups of rectangular square tubes for connection, and the two groups of rectangular square tubes for connection are arranged at intervals;

[0010] One end of each set of the connecting rectangular square tubes is connected to the rail clamping device component through the differential bolt fastening mechanism, and the other end of each set of the connecting rectangular square tubes is provided with the emergency repair support;

[0011] The base of the emergency repair pillar is connected to the pillar crossbeam by bolts, and the pillar legs are provided on the lower sides of both ends of the pillar crossbeam and supported on the ground by the pillar legs;

[0012] The rail clamping device components are used to demonstrate clamping of a rail body in a limited space. The rail clamping device components are arranged in two groups laterally along the rail body, which can enhance the stability of a temporary support tower for emergency repairs.

[0013] Furthermore, the rail clamping device components include a rail clamping base, a first clamping jaw, a second clamping jaw, a first bolt, a second bolt and two guide light axes; the rail clamping base is connected to the connecting rectangular square tube through the differential bolt fastening mechanism, the first clamping jaw and the second clamping jaw are both installed in the rail clamping base, the first bolt and the second bolt are both passed through the side of the rail clamping base, and the first clamping jaw and the second clamping jaw are both slidably set on the two guide light axes; the rail clamping device components are firmly connected to the rail body.

[0014] Furthermore, the first clamping jaw is composed of a first clamping jaw base with a through hole at the bottom, a first pin shaft, a first clamping block, and two first flexible polyurethane anti-slip strips placed on the first clamping block;

[0015] The second clamping jaw is composed of a second clamping jaw base with a non-through blind hole at the bottom, a second pin shaft, a second clamping block, and two second flexible polyurethane anti-slip strips placed on the second clamping block;

[0016] The first bolt is screwed into the left threaded hole of the rail clamp base and passes through the through hole of the first clamp base until it penetrates into the second clamp base and abuts against the blind hole of the second clamp base;

[0017] The second bolt is screwed into the left threaded hole of the rail clamp base and abuts against the blind hole of the second clamp base;

[0018] At this time, the first clamping jaw base forms a series contact with the second clamping jaw base and the lower surface of the rail body, the first clamping jaw base and the lower surface of the rail body are in line contact and the force point is located on the center line of the cross section of the rail body.

[0019] Furthermore, the width of the rail clamp base does not exceed 60 mm.

[0020] Furthermore, the height of the rail clamp base does not exceed 60 mm so as to adapt to the effective installation space of the ballastless track.

[0021] Furthermore, when the rail clamping device components are firmly connected to the rail body, the first clamping jaw base and the second clamping jaw base and their special structural design can effectively cope with the bending deformation of the first bolt and the second bolt caused by accidents such as large impacts, thereby preventing the first clamping jaw base and the second clamping jaw base from accidentally falling off from the rail body.

[0022] Furthermore, the differential bolt fastening mechanism includes a shell, a differential bolt and an insert part; wherein, the shell contains a threaded hole and is fixedly connected to the connecting rectangular tube by four bolts; the differential bolt contains an external thread and an internal threaded hole with the same rotation direction, and the pitch of the internal and external threads is different; the insert part has a stud on one side and four insertion feet on the other side, the length of the stud of the insert part does not exceed the length of the internal threaded hole of the differential bolt, and the stud of the insert part and the internal threaded hole of the differential bolt realize bolt fastening cooperation.

[0023] Furthermore, during actual repair work, repair personnel only need to further tighten the differential bolt, causing the insert component to move due to the pitch difference between the internal and external threads of the differential bolt, allowing the four insertion legs of the insert component to be inserted into the corresponding holes in the connecting rectangular square tube. At this point, the rail clamping device component is firmly connected to the connecting rectangular square tube. Due to the differential effect, the differential bolt fastening mechanism is easy to assemble and disassemble, and is impact-resistant, deformation-resistant, and not prone to falling off. The rail clamping device component is firmly connected to the connecting rectangular square tube. Furthermore, due to the different pitches of the internal and external threads of the differential bolt, it further prevents falling off during assembly.

[0024] Furthermore, the invention can be applied to railway ballastless track beds or railway ballasted track beds.

[0025] Each set of rail clamping device components described in the above technical solution includes a pair of two hinged jaws that can achieve symmetrical "surface-to-surface" contact with the two symmetrical surfaces of the rail. The structural dimensions of the two jaws are specially designed, with one jaw having a through hole at the bottom (through-hole jaw) and the other jaw having a blind hole at the bottom (blind-hole jaw). A bolt is passed through the through hole of the through-hole jaw and pressed against one blind hole of the blind-hole jaw. Another bolt is passed through the other blind hole of the blind-hole jaw, and the two bolts are respectively threaded and fixed to the clamp base; at this point, the clamp base is fixed to the rail. The clamp base is also equipped with two guide light rods to prevent asymmetric clamping of the two jaws and the rail.

[0026] Each set of emergency repair pillars described in the above technical solution uses a rectangular square tube, and two differential bolt fastening mechanisms are symmetrically arranged on the left and right sides of the head end of each group. The rectangular square tube is sleeved on the corresponding position of the rail clamp base, and the bolts of the differential bolt mechanism are screwed to achieve a fixed connection between the clamp base and the rectangular square tube.

[0027] The present invention has the following advantages:

[0028] (1) The rail clamping device used in the ballastless track of the present invention solves the problem that the rail cannot be installed and fixed in the limited space of the ballastless track at present. It is a new and innovative structural design, namely: the sleepers of the ballastless track are generally placed in the concrete rigid bearing layer in a "buried" or "embedded" manner, and the vertical distance between the rails laid on the sleepers and the concrete rigid bearing layer does not exceed 60 mm. The traditional rail clamping device is limited by the limited space and cannot be fixedly installed; the rail clamp of the present invention can be clamped and fixedly connected with the rail in this limited space, and based on its specially designed clamping claw structure and force form, it has the characteristics of small size, impact resistance, deformation resistance, not easy to fall off, and stable clamping.

[0029] (2) The rail clamp base of the present invention is connected to the rectangular square tube of the emergency repair support through a differential bolt mechanism. It innovatively simplifies the bolt connection method used in traditional construction of this type to an "insert" connection method, effectively solving the problem that bolt connection cannot be achieved in a limited space. At the same time, it greatly improves the construction efficiency and reduces the complexity of the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the arrangement of a rail quick clamping device applied to a railway track bed is provided in some embodiments of the present invention.

[0031] Figure 2 A schematic diagram of the overall structure of a rail quick clamping device applied to a railway track bed provided in some embodiments of the present invention.

[0032] Figure 3 A front view of the overall structure of a rail quick clamping device applied to a railway track bed provided in some embodiments of the present invention.

[0033] Figure 4 A schematic diagram of the installation of the clamping jaws of a rail quick clamping device applied to a railway track bed provided in some embodiments of the present invention.

[0034] Figure 5 A schematic diagram of the clamping state of a rail fast clamping device applied to a railway track bed provided in some embodiments of the present invention, showing the clamping state of the rail with the clamping jaws.

[0035] Figure 6 This is a schematic diagram of the installation of a rectangular square tube and a differential bolt fastening mechanism for connecting a clamp base and a repair pillar of a rail quick clamping device applied to a railway track bed provided by some embodiments of the present invention.

[0036] In the figure: 1. Rail body, 2. Rail clamping device components, 3. Connecting rectangular square tube, 4. Emergency repair support, 5. Support beam, 6. Support foot;

[0037] 21. Rail clamp base, 22. First clamping jaw, 23. Second clamping jaw;

[0038] 211, first bolt, 212, second bolt, 213, guide optical axis;

[0039] 221. First clamping jaw base, 222. First clamping block, 223. First pin shaft, 224. First flexible polyurethane anti-slip strip;

[0040] 231. Second clamping jaw base, 232. Second clamping block, 233. Second pin shaft, 234. Second flexible polyurethane anti-slip strip;

[0041] 31. Differential bolt tightening mechanism;

[0042] 311. Housing, 312. Differential bolt, 313. Insert parts. DETAILED DESCRIPTION

[0043] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0044] See also Figure 1 The figure shows a schematic layout diagram of a rail clamping device for ballastless track according to the present invention, which is characterized by comprising a demonstration rail body 1, rail clamping device components 2 (two groups in one set), connecting rectangular square tubes 3 (two groups in one set), emergency repair pillars 4, pillar crossbeams 5, and pillar legs 6 (two groups in one set).

[0045] See also Figures 2 to 5 The figure shows one of the key technologies of a rail clamping device for ballastless track according to the present invention. The rail clamping device component 2 includes a rail clamp base 21, a first clamping jaw 22, a second clamping jaw 23, a first bolt 211, a second bolt 212, and two guide optical axes 213.

[0046] The first clamping jaw 22 comprises a first clamping jaw base 221 with a through hole at the bottom, a first pin 223, a first clamping block 222, and two first flexible polyurethane anti-slip strips 224 mounted on the first clamping block 222. (For clarity, only the relatively high anti-slip strip is shown in the figure; the other one, which serves the same purpose, is not described here.) The second clamping jaw 23 comprises a second clamping jaw base 231 with a non-through blind hole at the bottom, a second pin 233, a second clamping block 232, and two second flexible polyurethane anti-slip strips 234 mounted on the second clamping block 232.

[0047] The two guide light axes 213 are passed through the first clamping jaw base 221 and the second clamping jaw base 231 and assembled with the rail clamper base 21. At this time, the first clamping jaw base 221 and the second clamping jaw base 231 can move back and forth along the axial direction of the guide light axis 213 inside the rail clamper base 21; when the first clamping jaw base 221 and the second clamping jaw base 231 are moved relative to each other, the lower surface of the bottom end of the first clamping jaw base 221 will form a "surface-to-surface" contact with the upper surface of the bottom end of the second clamping jaw base 231.

[0048] Then, move the rail clamping device component 2 to the bottom of the rail body 1, connect the first clamping block 222 to the first clamping jaw base 221 through the first pin 223, and connect the second clamping block 232 to the second clamping jaw base 231 through the second pin 233, so that the first clamping block 222 can rotate relative to the first pin 223, and the second clamping block 232 can rotate relative to the second pin 233; then, insert the lower edges of both sides of the rail body 1 into the corresponding positions of the first clamping jaw base 221 and the second clamping jaw base 231, respectively, until the first flexible polyurethane anti-slip strip 224 and the second flexible polyurethane anti-slip strip 234 respectively contact the two symmetrical surfaces of the rail body 1.

[0049] Then, screw the first bolt 211 into the left threaded hole of the rail clamp base 21, and pass through the through hole of the first clamp base 221 until it penetrates into the second clamp base 231 and abuts against the blind hole of the second clamp base 231; then, screw the second bolt 212 into the right threaded hole of the rail clamp base 21 until it penetrates into the second clamp base 231 and abuts against the blind hole of the second clamp base 231.

[0050] At this point, the first clamping jaw base 221 forms serial contact with the second clamping jaw base 231 and the lower surface of the rail body 1. Furthermore, the first clamping jaw base 221 and the lower surface of the rail body 1 are in "line contact," with the force applied at the centerline of the rail cross section. This ensures a secure connection between the rail clamping device component 2 and the rail body 1.

[0051] See also Figure 6 The figure shows the second key technology of the rail clamping device applied to ballastless track of the present invention. Two differential bolt fastening mechanisms 31 are symmetrically arranged on the left and right sides of one end of the connecting rectangular square tube 3 (for clarity, only the mechanism close to the reader is marked in the figure, and the other mechanism is not repeated because it has the same function). The differential bolt fastening mechanism 31 consists of a shell 311, a differential bolt 312, and an insert part 313; wherein, the shell 311 contains a threaded hole and is fixedly connected to the connecting rectangular square tube 3 by four bolts; the differential bolt 312 contains an external thread and an internal thread of the same rotation direction, and the pitch of the internal and external threads is different; the insert part 313 has a stud on one side and four insertion feet on the other side, the stud length does not exceed the length of the internal thread of the differential bolt 312, and can be bolted together with the internal thread of the differential bolt 312.

[0052] First, the insert part 313 is arranged in the shell 311, and then the differential bolt is screwed into the threaded hole of the shell 311 to a certain position. At this time, the stud of the insert part 313 has been automatically screwed into the internal threaded hole of the differential bolt; at this time, it is only necessary to further tighten the differential bolt, and the insert part 313 will move due to the pitch difference between the internal and external threads of the differential bolt 312, and the four insertion feet of the insert part 313 will be inserted into the corresponding holes on the connecting rectangular square tube 3. At this time, the rail clamping device component 2 is firmly connected to the connecting rectangular square tube 3, and due to the differential effect, the differential bolt fastening mechanism 31 has the characteristics of impact resistance, deformation resistance, and not easy to fall off.

[0053] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0055] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0056] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0057] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0058] In the description of this specification, the reference terms "Embodiment 1", "Embodiment 2", "Example", "Specific Example", or "Some Examples" mean that the specific method, device or feature described in conjunction with the embodiment or example is 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, methods, devices or features described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rail fast clamping device for railway track bed, characterized in that: It comprises a rail clamping device component (2), a connecting rectangular square tube (3), a repair support (4), a support beam (5), a support foot (6), and a differential bolt fastening mechanism (31); The connecting rectangular square tubes (3) are in two groups, and the two groups of connecting rectangular square tubes (3) are arranged at intervals; One end of each set of the connecting rectangular square tubes (3) is connected to the rail clamping device component (2) via the differential bolt fastening mechanism (31), and the other end of each set of the connecting rectangular square tubes (3) is provided with the emergency repair support (4); The base of the emergency repair pillar (4) is connected to the pillar crossbeam (5) by bolts, and the pillar support feet (6) are provided on the lower sides of both ends of the pillar crossbeam (5); The rail clamping device component (2) is used to clamp the rail body (1) in a limited space; The rail clamping device component (2) comprises a rail clamping base (21), a first clamping jaw (22), a second clamping jaw (23), a first bolt (211), a second bolt (212) and two guide optical axes (213); the rail clamping base (21) is connected to the connecting rectangular square tube (3) via the differential bolt fastening mechanism (31); the first clamping jaw (22) and the second clamping jaw (23) are both installed in the rail clamping base (21); the first bolt (211) and the second bolt (212) are both passed through the side of the rail clamping base (21); and the first clamping jaw (22) and the second clamping jaw (23) are both slidably arranged on the two guide optical axes (213); The first clamping jaw (22) is composed of a first clamping jaw base (221) with a through hole at the bottom, a first pin shaft (223), a first clamping block (222), and two first flexible polyurethane anti-slip strips (224) arranged on the first clamping block (222); The second clamping jaw (23) is composed of a second clamping jaw base (231) with a non-through blind hole at the bottom, a second pin shaft (233), a second clamping block (232), and two second flexible polyurethane anti-slip strips (234) arranged on the second clamping block (232); The differential bolt fastening mechanism (31) comprises a housing (311), a differential bolt (312), and an insert part (313); wherein the housing (311) comprises a threaded hole and is fixedly connected to the connecting rectangular square tube (3) via four bolts; the differential bolt (312) comprises an external thread and an internal threaded hole with the same rotation direction, and the pitches of the internal and external threads are different; the insert part (313) has a stud on one side and four insertion feet on the other side; the length of the stud of the insert part (313) does not exceed the length of the internal threaded hole of the differential bolt (312); the stud of the insert part (313) and the internal threaded hole of the differential bolt (312) are fastened by bolts.

2. A rail fast clamping device for railway track bed according to claim 1, characterized in that: The first bolt (211) is screwed into the left threaded hole of the rail clamp base (21) and passes through the through hole of the first clamp base (221) until it penetrates into the second clamp base (231) and abuts against the blind hole of the second clamp base (231); The second bolt (212) is screwed into the right threaded hole of the rail clamp base (21) and abuts against the blind hole of the second clamp base (231); At this time, the first clamping jaw base (221) forms a series contact with the second clamping jaw base (231) and the lower surface of the rail body (1), and the first clamping jaw base (221) and the lower surface of the rail body (1) are in line contact, and the force point is located on the center line of the cross section of the rail body (1).

3. The rail fast clamping device for railway track bed according to claim 2, characterized in that: The height of the rail clamp base (21) does not exceed 60 mm.

4. The rail fast clamping device for railway track bed according to claim 3, characterized in that: The width of the rail clamp base (21) does not exceed 60 mm.

5. The rail quick clamping device for railway track bed according to claim 4, characterized in that: The first clamping jaw base (221) and the second clamping jaw base (231) are used to prevent the first bolt (211) and the second bolt (212) from bending and deforming, thereby preventing the first clamping jaw base (221) and the second clamping jaw base (231) from accidentally falling off from the rail body (1).

6. The rail quick clamping device for railway track bed according to claim 5, characterized in that: During actual operation by emergency repair personnel, they only need to further tighten the differential bolt (312), and the insertion part (313) will move due to the pitch difference between the internal and external threads of the differential bolt (312), and the four insertion feet of the insertion part (313) will be inserted into the corresponding holes on the connecting rectangular square tube (3). At this time, the rail clamping device component (2) and the connecting rectangular square tube (3) are firmly connected.

7. The rail quick clamping device for railway track bed according to claim 6, characterized in that: Applicable to railway ballastless track bed or railway ballasted track bed.

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