I-shaped contact rail intermediate joint

Abstract

The utility model discloses an I-shaped contact rail intermediate joint. The I-shaped contact rail intermediate joint comprises a fixing piece and two connecting groove bodies symmetrically arranged on the two side faces of a contact rail. The connecting groove body comprises a first side wall, a bottom wall and a second side wall which are connected in sequence, and the first side wall and the second side wall are perpendicular to the bottom wall, so that a groove is formed between the first side wall and the second side wall; one side of the base portion of the contact rail is located in the groove, the first side wall is tightly attached to the base portion, the second side wall is clamped at the concave position of the waist portion of the contact rail, an installation hole is formed in the first side wall, the fixing piece penetrates through the installation hole of the connecting groove body and enables the two connecting groove bodies to be fixedly connected, and therefore the two sections of contact rails are fixedly connected in a butt joint mode. The two connecting groove bodies are symmetrically installed on the two side faces of the butt joint position of the two sections of contact rails respectively, the fixing pieces penetrate through the installation holes in the connecting groove bodies to fix the two connecting groove bodies, and therefore the two sections of contact rails are fixedly connected in a butt joint mode, drilling does not need to be conducted on the contact rails in the installation process, installation is convenient and fast, construction efficiency is improved, and construction cost is reduced. And meanwhile, the integrity of the contact rail is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of rail transit conductor rails, and in particular to an I-shaped conductor rail intermediate joint. Background Art

[0002] The contact rail system is the conductive rail that transmits power to rail transit vehicles. It is a rigid, suspended structure composed of multiple sections of contact rail connected by intermediate joints to maintain continuity along the line. To ensure stable current carrying capacity, the intermediate joints must maintain close contact with the waist of the contact rail, with a current carrying capacity of at least 1.1 times that of the contact rail itself.

[0003] In the prior art, adjacent I-shaped contact rails are generally connected at their joints by drilling and clamping the upper / lower fishplates. However, during the actual construction and assembly process, the connecting ends of the contact rails need to be drilled on site, which is time-consuming and labor-intensive to install and adjust, with low work efficiency and a long time consumption. In addition, drilling the contact rails will change the physical properties of the contact rails themselves, reduce the strength of the contact rails, and easily cause local deformation of the contact rail connection parts, thereby affecting the use of the contact rails and the stability of the system current carrying capacity. At the same time, on-site drilling is prone to deviations. When the drilling accuracy deviates, local contact gaps are easily formed during the assembly process, which increases the resistance of the middle joint connection parts, causing electrochemical corrosion and local abnormal heating, shortening the service life of the contact rails, and affecting the power supply quality and the stable current drawing of the maglev train.

[0004] Therefore, how to provide an I-shaped contact rail intermediate joint that is easy and quick to install and can improve the overall strength and integrity of the I-shaped contact rail is a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides an I-shaped contact rail intermediate joint, which does not require drilling of the I-shaped contact rail. The installation process is simple and quick, and the construction efficiency is more efficient. At the same time, it ensures the integrity of the contact rail and helps to improve the overall strength of the contact rail.

[0006] The technical solutions provided in this application are as follows:

[0007] An I-shaped contact rail intermediate joint is used to fixedly connect two adjacent I-shaped contact rail sections, comprising a fixing member and two connecting grooves symmetrically arranged on both sides of the contact rail;

[0008] The connecting groove body includes a first side wall, a bottom wall and a second side wall connected in sequence, and the first side wall and the second side wall are perpendicular to the bottom wall so that a groove is formed between the first side wall and the second side wall;

[0009] The connecting groove body is installed on the contact rail so that one side of the base of the contact rail is located in the corresponding groove, and the first side wall is closely attached to the back of the base, and the second side wall is clamped in the inner concave part of the waist of the contact rail, and the first side wall is provided with a mounting hole;

[0010] The fixing member passes through the mounting holes of the connecting groove bodies on both sides and fixedly connects the two connecting groove bodies, thereby fixing and docking the two adjacent sections of the contact rail.

[0011] Furthermore, the shape of the second side wall is adapted to the contour of the inner recess of the waist, and the second side wall is closely attached to the waist.

[0012] Furthermore, the shape of the groove is adapted to the shape of the base, and the side surface of the base is in close contact with the bottom of the groove.

[0013] Furthermore, the fixing member includes a bolt and a nut, the bolt passes through the mounting holes on the first side walls of the two connecting trough bodies in sequence, and the bolt is locked on the connecting trough body by the nut.

[0014] Furthermore, the fixing member also includes a pin, and a pin hole is provided at the end of the bolt. The pin hole is located at the end of the nut away from the connecting groove body, and the pin is installed in the pin hole.

[0015] Furthermore, the mounting hole is a threaded hole.

[0016] Furthermore, a gasket is provided between the bolt and the connecting groove body.

[0017] Furthermore, the intersection between the second side wall and the bottom wall is connected in an arc shape.

[0018] Furthermore, an outer side of the bottom wall is provided with an alignment line perpendicular to the extension direction of the contact rail, and the alignment line is located in the middle of the connecting groove body.

[0019] Furthermore, the connecting trough body is integrally formed.

[0020] Compared with the prior art, the I-shaped contact rail intermediate joint provided by the utility model is used to fix and connect two adjacent I-shaped contact rails together at the ends. The two connecting grooves are installed at the connecting point of the two adjacent contact rails and are respectively located on both sides of the contact rail, so that the two sides of the base of the contact rail are respectively located in the grooves of the two connecting grooves, and the second side wall of the connecting groove is stuck in the waist of the contact rail. The first side wall of the connecting groove is provided with a mounting hole. The fixing parts pass through the mounting holes of the connecting grooves on both sides of the contact rail in turn and fix the two connecting grooves, so that the two adjacent contact rails can be fixed together at the end connecting point. In the process of connecting and installing the two contact rails, the intermediate joint does not require drilling of the contact rails. The installation is convenient and quick, which improves the construction efficiency. At the same time, it ensures the integrity of the contact rail, helps to improve the overall strength of the contact rail and the stability of the current carrying of the contact rail system, and the cross-sectional area of ​​the connecting groove is larger and the flow capacity is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the cross-sectional structure of an I-shaped contact rail in an embodiment of the present application;

[0023] Figure 2 This is a schematic structural diagram of the middle joint of the I-shaped contact rail in an embodiment of the present application;

[0024] Figure 3 This is an exploded view of the middle joint of the I-shaped contact rail in the embodiment of the present application;

[0025] Figure 4 This is a schematic cross-sectional view of the middle joint of the I-shaped contact rail in an embodiment of the present application;

[0026] Figure 5 This is a schematic structural diagram of the connecting groove body of the middle joint of the I-shaped contact rail in an embodiment of the present application.

[0027] Figure numerals: contact rail 1 1, contact rail 2 2, head 101, base 102, waist 103, fixing part 3, bolt 301, nut 302, pin 303, gasket 304, connecting trough body 4, first side wall 401, bottom wall 402, second side wall 403, marking line 404, mounting hole 405. DETAILED DESCRIPTION

[0028] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0029] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", 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 this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0033] like Figure 1 As shown, the cross-section of the I-shaped contact rail is in the shape of an "I", including a head, a base and a waist connecting the head and the base. The head is the working end used to allow the receiving shoe to take current, the surface of the head used for the receiving shoe to take current is the working surface, the surface opposite to the waist is the side of the contact rail, the side of the base away from the head is the back, and an inward concave shape is formed between the head and the base on the outside of the waist.

[0034] like Figures 2 to 5 As shown, the embodiment of the present application provides an I-shaped contact rail intermediate joint for fixedly connecting two adjacent I-shaped contact rails, comprising a fixing member 3 and two connecting grooves 4 symmetrically arranged on both sides of the contact rail;

[0035] The connecting groove body 4 includes a first side wall 401, a bottom wall 402 and a second side wall 403 connected in sequence, and the first side wall 401 and the second side wall 403 are perpendicular to the bottom wall 402 so that a groove is formed between the first side wall 401 and the second side wall 403;

[0036] The connecting slot body 4 is installed on the contact rail so that one side of the base 102 of the contact rail is located in the corresponding groove, and the first side wall 401 is in close contact with the back of the base 102, and the second side wall 403 is stuck in the concave part of the waist 103 of the contact rail. The first side wall 401 is provided with a mounting hole 405;

[0037] The fixing member 3 passes through the mounting holes 405 of the connecting slots 4 on both sides and fixedly connects the two connecting slots 4, thereby fixing and docking the two adjacent sections of the contact rail.

[0038] Compared with the prior art, the intermediate joint of the I-shaped contact rail provided in this embodiment is used to fix and connect two adjacent sections of the I-shaped contact rail together at the ends. The two connecting grooves 4 are installed at the joints of the two adjacent sections of the contact rail and are respectively located on both sides of the contact rail, so that the two sides of the base 102 of the contact rail are respectively located in the grooves of the corresponding connecting grooves 4. The first side walls 401 of the two connecting grooves 4 are tightly attached to the back of the base 102, and a gap is left between the opposite surfaces of the two first side walls 401 to maintain sufficient clamping force. The second side walls 403 of the connecting grooves 4 are stuck in the concave part of the waist 103 of the contact rail. A mounting hole 405 is provided on the first side wall 401 of the connecting groove body 4. The mounting hole 405 is perpendicular to the waist 103 of the contact rail. The fixing member 3 passes through the mounting holes 405 of the connecting groove bodies 4 on both sides of the contact rail in sequence and fixes the two connecting groove bodies 4 together, so that the two adjacent sections of the contact rail can be fixed together at the end butt joint. During the butt joint installation of the two sections of the contact rail, the intermediate joint does not require drilling of the contact rail, which is convenient and quick to install, improves construction efficiency, and ensures the integrity of the contact rail, which helps to improve the overall strength of the contact rail and the stability of the current carrying capacity of the contact rail system.

[0039] Specifically, in this embodiment, the two I-shaped contact rails 1 and 2 to be joined are horizontal, with their side surfaces facing upward and downward. The ends of the two contact rails 1 and 2 are first aligned. A connecting trough 4 is installed above the joint between the two rails 1 and 2, and another connecting trough 4 is symmetrically installed below the joint between the two rails 1 and 2. The first sidewall 401 of the upper connecting trough 4 contacts the first sidewall 401 of the lower connecting trough 4, with the mating surface between the two connecting troughs 4 positioned midway between the two connecting troughs 4. The fixing members 3 are then secured through the mounting holes 405 on the first sidewalls 401 of the upper and lower connecting troughs 4, thereby securely connecting the two rails 1 and 2. The connecting trough 4 is of sufficient length to ensure stable mating of the two rails, and multiple mounting holes 405 are evenly distributed along the extension direction of the rails. In this embodiment, six mounting holes 405 are provided.

[0040] In order to ensure that the two connecting grooves 4 can more stably clamp the contact rail, the shape of the second side wall 403 is adapted to the contour of the inner recess of the waist portion 103, and the second side wall 403 is closely attached to the waist portion 103. Specifically, the two opposing surfaces of the base portion 102 and the head portion 101 are inclined, so the two opposing surfaces of the second side wall 403 are also inclined, and one surface of the second side wall 403 has the same inclination angle as its corresponding surface of the base portion 102, and the other surface of the second side wall 403 has the same inclination angle as its corresponding surface of the head portion 101. This ensures that the outer shape of the second side wall 403 is adapted to the contour of the inner recess of the waist portion 103 of the contact rail, and the second side wall 403 contacts the waist portion 103 of the contact rail, so that the second side wall 403 is stably clamped in the inner recess of the waist portion 103 of the contact rail.

[0041] In this embodiment, the shape of the groove preferably matches the shape of the base 102, and the side surface of the base 102 is in close contact with the bottom of the groove. One side of the base 102 of the contact rail is located in the groove, the base 102 matches the shape of the groove, and the side surface of the base 102 contacts the bottom of the groove, so that the groove of the connecting groove body 4 is stably clamped on the base 102, which helps to stabilize the contact rail.

[0042] Specifically, in this embodiment, the fixing member 3 includes a bolt 301 and a nut 302 . The bolt 301 passes through the mounting holes 405 on the first side walls 401 of the two connecting trough bodies 4 in sequence, and the bolt 301 is locked on the connecting trough body 4 by the nut 302 .

[0043] In order to make the fixation more reliable, in this embodiment, the fixing member 3 also includes a pin 303. The end of the bolt 301 is provided with a pin hole. The pin hole is located at the end of the nut 302 away from the connecting groove body 4, and the pin 303 is installed in the pin hole. After the bolt 301 is installed in the mounting hole 405, the nut 302 is tightened to fix and lock the nut 302 with the connecting groove body 4, and then the pin 303 is inserted into the pin hole at the end of the bolt 301. The pin 303 is preferably a cotter pin. The pin 303 can prevent the nut 302 from withdrawing from the bolt 301, thereby making the connection and fixation of the two connecting groove bodies 4 more secure and reliable. Preferably, the mounting hole 405 is a threaded hole. Through the threaded fit between the bolt 301 and the threaded hole, the connection between the bolt 301 and the connecting groove body 4 is more secure.

[0044] In this embodiment, preferably, a gasket 304 is provided between the bolt 301 and the connecting groove 4. Specifically, a gasket 304 is provided between the head 101 of the bolt 301 and the connecting groove 4, and more preferably, a gasket 304 is provided between the nut 302 and the connecting groove 4.

[0045] In this embodiment, the second side wall 403 and the bottom wall 402 are connected in an arc shape at their intersection to achieve a smooth transition. To make the surface of the connecting trough 4 smoother and reduce bumps, the intersections of the various surfaces of the first side wall 401 are in an arc shape, and more preferably, the intersections of the various surfaces of the second side wall 403 are in an arc shape.

[0046] To facilitate locating the mating surfaces of the two contact rail sections in the middle of the connecting trough 4, in this embodiment, an alignment line 404 perpendicular to the extending direction of the contact rail is provided on the outer side of the bottom wall 402. The alignment line 404 is located in the middle of the connecting trough 4. Specifically, a groove line is provided on the outer side of the bottom wall 402 in a direction perpendicular to the working surface of the contact rail. The groove line serves as the alignment line 404. During installation, the mating surfaces of the two contact rail sections are aligned with the alignment line 404, thereby quickly locating the mating surfaces in the middle of the connecting trough 4, allowing the connecting trough 4 to better secure the two contact rail sections together.

[0047] In this embodiment, the connecting groove body 4 is integrally formed, which is convenient for processing and manufacturing and can also improve the overall strength of the connecting groove body 4.

[0048] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one 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 application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An I-shaped contact rail intermediate joint, used for fixedly connecting two adjacent I-shaped contact rails, characterized in that: It includes a fixing member and two connecting grooves symmetrically arranged on both sides of the contact rail; The connecting groove body includes a first side wall, a bottom wall and a second side wall connected in sequence, and the first side wall and the second side wall are perpendicular to the bottom wall so that a groove is formed between the first side wall and the second side wall; The connecting groove body is installed on the contact rail so that one side of the base of the contact rail is located in the corresponding groove, and the first side wall is closely attached to the back of the base, and the second side wall is clamped in the inner concave part of the waist of the contact rail, and the first side wall is provided with a mounting hole; The fixing member passes through the mounting holes of the connecting groove bodies on both sides and fixedly connects the two connecting groove bodies, thereby fixing and docking the two adjacent sections of the contact rail.

2. The I-shaped contact rail intermediate joint according to claim 1, characterized in that: The shape of the second side wall is adapted to the contour of the inner concave portion of the waist, and the second side wall is closely attached to the waist.

3. The I-shaped contact rail intermediate joint according to claim 1, characterized in that: The shape of the groove is adapted to the shape of the base, and the side surface of the base is in close contact with the bottom of the groove.

4. The I-shaped contact rail intermediate joint according to claim 1, characterized in that: The fixing member includes a bolt and a nut. The bolt passes through the mounting holes on the first side walls of the two connecting trough bodies in sequence, and the bolt is locked on the connecting trough body by the nut.

5. The I-shaped contact rail intermediate joint according to claim 4, characterized in that: The fixing member further comprises a pin, and a pin hole is provided at the end of the bolt. The pin hole is located at an end of the nut away from the connecting slot body, and the pin is installed in the pin hole.

6. The I-shaped contact rail intermediate joint according to claim 4, characterized in that: The mounting hole is a threaded hole.

7. The I-shaped contact rail intermediate joint according to claim 4, characterized in that: A gasket is provided between the bolt and the connecting groove body.

8. The I-shaped contact rail intermediate joint according to claim 1, characterized in that: The intersection between the second side wall and the bottom wall is connected in an arc shape.

9. The I-shaped contact rail intermediate joint according to claim 1, characterized in that: An alignment line perpendicular to the extending direction of the contact rail is provided on the outer side of the bottom wall, and the alignment line is located in the middle of the connecting groove body.

10. The I-shaped busbar intermediate joint according to any one of claims 1 to 9, characterized in that: The connecting trough body is integrally formed.

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