Third rail support adjusting structure

Abstract

The utility model discloses a third rail support adjusting structure, relates to the technical field of rail traffic equipment, and aims to solve the technical problems that in the prior art, the length of an insulating cantilever in a third rail support is fixed, so that the distance between a third rail and a base is inconvenient to adjust, and the third rail is inconvenient to install. The device comprises a fixed arm, an adjusting mechanism, a movable claw and a locking mechanism, the fixed arm is connected with the movable claw through the adjusting mechanism, and the adjusting mechanism is used for enabling the movable claw to relatively move along the fixed arm; the length of the insulation cantilever composed of the fixed arm and the movable claw can be adjusted according to actual needs, so that the distance between the third rail and the base is adjusted more conveniently, and the third rail is installed more conveniently.

Description

Technical Field

[0001] This application relates to the field of rail transit equipment technology, specifically to a third rail support adjustment structure. Background Technology

[0002] With economic development, urban subways have also seen significant growth. Currently, most urban subways use a third rail power supply system, which involves laying an I-beam parallel to the two main rails as a third rail (contact rail). The main function of the third rail is to transmit high-voltage power to the electric locomotive's drive unit via a pantograph. The third rail is fixed to the roadbed by a third rail bracket.

[0003] In existing technology, the third rail bracket includes an insulating cantilever and a base frame. The insulating cantilever is used to fix the third rail. One end of the insulating cantilever is fixedly connected to the base frame via a connector, and the other end is connected to the insulating cantilever. The insulating cantilever can effectively fix the third rail. When installing the third rail using the third rail bracket, the distance between the third rail and the base needs to be adjusted according to the actual situation.

[0004] However, in the existing technology, the length of the insulating cantilever in the third rail bracket is fixed, which makes it inconvenient to adjust the distance between the third rail and the base, and thus inconvenient to install the third rail. Utility Model Content

[0005] The main objective of this application is to provide a third rail support adjustment structure, which aims to solve the technical problem in the prior art where the length of the insulating cantilever in the third rail support is fixed, making it inconvenient to adjust the distance between the third rail and the base, and thus inconvenient to install the third rail.

[0006] To achieve the above objectives, this application provides a third-rail support adjustment structure, including a fixed arm, an adjustment mechanism, a movable claw, and a locking mechanism;

[0007] The fixed arm and the movable claw are connected by the adjustment mechanism, which is used to move the movable claw along the fixed arm; the locking mechanism is used to lock the movable claw.

[0008] Optionally, the adjusting mechanism includes a meshing gear and a first rack; the first rack is disposed on the movable pawl and is disposed along the moving direction of the movable pawl; the gear is mounted on the fixed arm via a rotating shaft.

[0009] Optionally, a drive assembly is mounted on the rotating shaft; a first strip hole is formed on the movable claw, the first strip hole is arranged along the moving direction of the movable claw, one end of the rotating shaft extends into the first strip hole and is connected to the drive assembly for transmission, and the other end of the rotating shaft is fixedly connected to the fixed arm.

[0010] Optionally, the drive assembly includes a power block mounted on the upper part of the rotating shaft, and the top surface of the power block has a power groove.

[0011] Optionally, the power slot is hexagonal in shape.

[0012] Optionally, the top surface of the power block and the top surface of the movable claw are located on the same plane.

[0013] Optionally, the bottom surface of the movable claw has a movable groove, and a second rack located in the movable groove is also installed on the movable claw. The second rack is arranged along the moving direction of the movable claw and meshes with the gear.

[0014] The movable claw has multiple second strip-shaped holes, all of which are arranged along the moving direction of the movable claw. The locking mechanism locks the movable claw through the second strip-shaped holes.

[0015] Optionally, the locking mechanism includes a screw and a nut, the screw being fixed to the fixed arm and passing through the second strip hole, the screw being threadedly engaged with the nut to lock the movable claw.

[0016] Optionally, the number of locking mechanisms is two, and the two locking mechanisms are respectively disposed on both sides of the adjusting mechanism.

[0017] By employing the above technical solution, this application has at least the following beneficial effects compared with the prior art:

[0018] This application provides a third-track support adjustment structure, including a fixed arm, an adjustment mechanism, a movable claw, and a locking mechanism. The fixed arm and the movable claw are connected by the adjustment mechanism, which allows the movable claw to move relative to the fixed arm. The locking mechanism locks the movable claw. That is, when it is necessary to adjust the relative distance between the third track and the base, i.e., to adjust the position of the third track, the locking mechanism can be loosened first. Then, the adjustment mechanism allows the movable claw to move the third track along the length of the fixed arm. When the third track reaches the appropriate position, the locking mechanism fixes the movable claw and the fixed arm, thus adjusting the distance between the third track and the base. In other words, this application divides the fixed-length insulating cantilever in the prior art into a fixed arm and a movable claw. The adjustment mechanism allows the movable claw to move along the length of the fixed arm, ultimately achieving the goal of adjusting the third track. Since the length of the insulating cantilever composed of the fixed arm and the movable claw can be adjusted according to actual needs, it is easier to adjust the distance between the third track and the base, and thus easier to install the third track. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a three-dimensional structural diagram of a third-track support adjustment structure provided in an embodiment of this application;

[0021] Figure 2 A three-dimensional structural diagram of the adjustment mechanism installed on the movable claw, as provided in an embodiment of this application;

[0022] Figure 3 Examples of embodiments in this application Figure 1 Enlarged view of point A in the middle;

[0023] Figure 4 This is a partial three-dimensional structural diagram of the locking mechanism installed on the movable claw, as provided in the embodiments of this application.

[0024] Reference numerals: 1. Fixed arm; 2. Adjusting mechanism; 21. First rack; 22. Gear; 23. Rotating shaft; 24. Second rack; 3. Movable claw; 31. Movable groove; 4. Locking mechanism; 41. Nut; 42. Washer; 43. Screw; 5. First strip hole; 6. Second strip hole; 7. Third track; 8. Base; 9. Power block; 91. Power groove.

[0025] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] To address the aforementioned technical problems, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0031] like Figure 1 As shown, this application provides a third track support adjustment structure, including a fixed arm 1, an adjustment mechanism 2, a movable claw 3, and a locking mechanism 4; the fixed arm 1 and the movable claw 3 are connected by the adjustment mechanism 2, the adjustment mechanism 2 is used to move the movable claw 3 along the fixed arm 1, that is, to move the movable claw 3 relative to the fixed arm 1; the locking mechanism 4 is used to lock the movable claw 3, and the movable claw 3 is used to fix the third track 7.

[0032] In specific implementation, the movable claw 3 can be set according to the relative movement direction of the fixed arm 1 as needed. In this embodiment, taking the third rail support used to fix the third rail 7 in rail transit as an example, the movement direction can be along the length direction of the movable claw 3 and the fixed arm 1, that is... Figure 1 The direction is perpendicular to the third orbit 7.

[0033] In this embodiment, the movable claw 3 has a gripping groove, and an insulating sleeve is provided inside the gripping groove. The third track 7 is gripped inside the insulating sleeve, which makes it easier to grip and fix the third track 7. However, the movable claw 3 is not the main device supporting the third track 7; the force on the third track 7 is borne by other devices. The fixed arm 1 is connected to the base 8. The connection between the fixed arm 1 and the base 8 can be a fixed connection or a rotating connection. When rotating, a fixing component is required to fix the fixed arm 1. That is, when it is not necessary to adjust the position change between the fixed arm 1 and the base 8, the fixed arm 1 and the base 8 need to be relatively fixed to more stably fix the third track 7. When it is necessary to adjust the relative distance between the third track 7 and the base 8, that is, to adjust the position of the third track 7, the locking mechanism 4 can be released first. Then, the movable claw 3 can be moved along the length direction of the fixed arm 1 by the adjusting mechanism 2. When the third track 7 reaches the appropriate position, the movable claw 3 and the fixed arm 1 can be fixed by the locking mechanism 4. In this way, the distance between the third track 7 and the base 8 can be adjusted. A fixing mechanism is also installed on the base 8, which is used to install the base 8 on the mounting body. The fixing mechanism preferably includes multiple fixing bolts installed on the base 8, with fixing sleeves and fixing nuts sequentially installed on the fixing bolts. The mounting body is the object on which the base is installed, such as a foundation. The base 8 is preferably L-shaped, which facilitates the installation of the base 8 and the connection between the base 8 and the fixing arm 1. Furthermore, the base 8, fixing arm 1, movable claw 3, locking mechanism 4, and adjusting mechanism 2 in the bracket of this application are preferably made of composite materials. That is, this application divides the fixed-length insulating cantilever in the prior art into a fixed fixing arm 1 and a movable movable claw 3. The adjusting mechanism 2 allows the movable claw 3 to move along the length of the fixed arm 1, ultimately achieving the goal of adjusting the third track 7. Thus, the length of the insulating cantilever composed of the fixed arm 1 and the movable claw 3 can be adjusted according to actual needs, making it easier to adjust the distance between the third track 7 and the base, and thus easier to install the third track 7.

[0034] To enable the movable claw 3 to slide along the length of the fixed arm 1, in some embodiments, such as... Figure 2 As shown, the adjusting mechanism 2 includes a meshing gear 22 and a first rack 21; the first rack 21 is mounted on the movable pawl 3 and is arranged along the length direction of the fixed arm 1; the gear 22 is mounted on the fixed arm 1 via a rotating shaft 23. In a specific implementation, one end of the rotating shaft 23 can be connected to the fixed arm 1 via a bearing, allowing the rotating shaft 23 to rotate relative to the fixed arm 1. Thus, the gear 22 can be driven to rotate by driving the rotating shaft 23, thereby causing the movable pawl 3 to move relative to the fixed arm 1 along the moving direction via the meshing first rack 21.

[0035] In this embodiment, the relative movement between the movable claw 3 and the fixed arm 1 is achieved by the gear 22 and the first rack 21 meshing with the gear 22, cleverly converting rotation into linear movement. Furthermore, because the gear meshing is an interlocking relationship, the movement in both relative directions can be precisely and controllably adjusted by controlling the gear 22, unlike the uncontrollable sliding that occurs with only a groove connection.

[0036] It is understandable that the driving method of the rotating shaft 23 can be achieved in a variety of ways. For example, the other end of the rotating shaft 23 can be directly fixed to the crossbar, and the rotating shaft can be rotated through the crossbar; the other end of the rotating shaft 23 can also be set as a regular polygon, and the rotating shaft can be rotated through a matching tool; a small motor can also be selected to drive the rotating shaft 23 according to actual needs, and the motor model, circuit connection and control can all be achieved through existing technology.

[0037] As an optional embodiment, such as Figure 2 and Figure 3 As shown, a drive assembly is mounted on the rotating shaft 23; a first strip hole 5 is opened on the movable claw 3, the first strip hole 5 is arranged along the moving direction of the movable claw 3, one end of the rotating shaft 23 extends into the first strip hole 5 and is connected to the drive assembly for transmission, and the other end of the rotating shaft 23 is fixedly connected to the fixed arm 1.

[0038] In this embodiment, when it is necessary to adjust the position of the movable claw 3, the locking mechanism 4 can be released first, and then the rotating shaft 23 can be rotated by the drive component. When the rotating shaft 23 rotates, it drives the gear 22 to rotate. Since the first rack 21 is set on the movable claw 3 and the gear 22 is fixedly installed on the fixed arm 1, and the first rack 21 meshes with the gear 22, when the gear 22 rotates, it will drive the first rack 21 to move. When the first rack 21 moves, it will drive the movable claw 3 to move along the length of the fixed arm 1. The movable claw 3 then drives the third track 7 to move relative to the fixed arm 1 until the position of the third track 7 is adjusted. Then, the locking mechanism 4 is used to fix the movable claw 3 and the fixed arm 1. Specifically, when the rotating shaft 23 rotates clockwise, the first rack 21 moves away from the base. At this time, the total length of the insulating cantilever composed of the movable claw 3 and the fixed arm 1 increases, and the movable claw 3 drives the third track 7 to move away from the fixed arm 1. When the rotating shaft 23 rotates counterclockwise, the first rack 21 moves closer to the base. At this time, the total length of the insulating cantilever composed of the movable claw 3 and the fixed arm 1 decreases, and the movable claw 3 drives the third track 7 to move closer to the fixed arm 1. Thus, by using the rack and pinion mechanism 22 as the preferred adjustment mechanism 2, it is easier to adjust the movement of the movable claw 3 along the fixed arm 1. The first slotted hole 5 has a certain length. When the first rack 21 drives the movable claw 3 to move, the upper part of the rotating shaft 23 and the drive assembly will move within the first slotted hole 5. Setting the drive assembly within the first slotted hole 5 makes it easier to install the drive assembly and to disassemble and install it.

[0039] To facilitate the rotation of the rotating shaft 23, some embodiments provide a preferred structure for the drive assembly, such as... Figure 3 As shown, the drive assembly includes a power block 9 mounted on the upper part of the rotating shaft 23. The top surface of the power block 9 has a power groove 91, which is hexagonal in shape.

[0040] In this embodiment, during implementation, when the rotating shaft 23 needs to rotate, the relevant personnel only need to take out a hex wrench and insert it into the power slot 91. By rotating the power block 9 with the hex wrench, the rotating shaft 23 can be driven to rotate. Therefore, the drive component in this embodiment has a simpler structure, is easier to use, and has a lower manufacturing cost. It does not require a motor or related circuitry; all that is needed is to carry a hex wrench.

[0041] To make the entire support structure more aesthetically pleasing, in some embodiments, such as Figure 3 As shown, the top surface of the power block 9 and the top surface of the movable claw 3 are on the same plane. This prevents the power block 9 from being located too deep inside the first slot, making it difficult to rotate; it also prevents the power block 9 from extending outside the first slot 5, which would affect the aesthetics of the entire bracket and its usability.

[0042] To make the movement of the movable claw 3 relative to the fixed arm 1 more stable, such as Figure 2 As shown, the bottom surface of the movable claw 3 has a movable groove 31, and a second rack 24 located in the movable groove 31 is also installed on the movable claw 3. The second rack 24 is arranged along the length direction of the fixed arm 1, and the second rack 24 meshes with the gear 22.

[0043] In this embodiment, during the specific implementation process, gear 22 not only meshes with the first rack 21, but also with the second rack 24. When gear 22 rotates, gear 22 will drive the first rack 21 and the second rack 24 to move together, and then drive the movable claw 3 to move together through the first rack 21 and the second rack 24. In this way, the first rack 21 and the second rack 24 drive the movable claw 3 to move more stably.

[0044] To facilitate securing the movable claw 3 and the fixing arm 1, in some embodiments, such as Figure 2 and Figure 4 As shown, the movable claw 3 has multiple second strip-shaped holes 6, all of which are arranged along the moving direction of the movable claw 3. The locking mechanism 4 locks the movable claw 3 through the second strip-shaped holes 6. The locking mechanism 4 includes a screw 43 and a nut 41. The screw 43 is fixed to the fixed arm 1 and passes through the second strip-shaped holes 6. A washer 42 and a nut 41 are sequentially provided on the screw 43, and the nut 41 is threadedly connected to the screw 43 to lock the movable claw 3.

[0045] In this embodiment, during the specific implementation process, the shim 42 can prevent the nut 41 from damaging the movable claw 3. When it is necessary to loosen the movable claw 3 and the fixed arm 1, the nut 41 is loosened. After the nut 41 is loosened, the movable claw 3 can be adjusted by the adjustment mechanism 2. When adjusting the movable claw 3, the screw will move in the second strip hole 6. When it is necessary to fix the movable claw 3 and the fixed arm 1, the nut 41 is tightened. This makes it easier to fix or loosen the movable claw 3 and the fixed arm 1.

[0046] To more stably fix the movable claw 3 and the fixed arm 1, in some embodiments, such as Figure 1 As shown, there are two locking mechanisms 4, which are respectively located on both sides of the adjusting mechanism 2.

[0047] In this embodiment, since there are two locking mechanisms 4, there are also two second strip holes 6. The two second strip holes 6 are located on both sides of the first strip hole 5. This allows the locking mechanism 4 to apply a uniform force between the movable claw 3 and the fixed arm 1, thereby making the movable claw 3 and the fixed arm 1 more stable.

[0048] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A third-rail support adjustment structure, characterized in that, It includes a fixed arm (1), an adjustment mechanism (2), a movable claw (3), and a locking mechanism (4); The fixed arm (1) and the movable claw (3) are connected by the adjustment mechanism (2), which is used to move the movable claw (3) along the fixed arm (1); The locking mechanism (4) is used to lock the movable claw (3).

2. The third rail support adjustment structure according to claim 1, characterized in that, The adjustment mechanism (2) includes a gear (22) and a first rack (21) that mesh with each other. The first rack (21) is disposed on the movable claw (3), and the first rack (21) is disposed along the moving direction of the movable claw (3); The gear (22) is mounted on the fixed arm (1) via a rotating shaft (23).

3. The third rail support adjustment structure according to claim 2, characterized in that, A drive assembly is installed on the rotating shaft (23); a first strip hole (5) is opened on the movable claw (3), the first strip hole (5) is set along the moving direction of the movable claw (3), one end of the rotating shaft (23) extends into the first strip hole (5) and is connected to the drive assembly for transmission, and the other end of the rotating shaft (23) is fixedly connected to the fixed arm (1).

4. The third rail support adjustment structure according to claim 3, characterized in that, The drive assembly includes a power block (9) mounted on the upper part of the rotating shaft (23), and the top surface of the power block (9) has a power groove (91).

5. The third rail support adjustment structure according to claim 4, characterized in that, The power slot (91) is hexagonal in shape.

6. The third rail support adjustment structure according to claim 5, characterized in that, The top surface of the power block (9) and the top surface of the movable claw (3) are on the same plane.

7. The third rail support adjustment structure according to any one of claims 2-6, characterized in that, The bottom surface of the movable claw (3) has a movable groove (31), and a second rack (24) located in the movable groove (31) is also installed on the movable claw (3). The second rack (24) is arranged along the moving direction of the movable claw (3), and the second rack (24) meshes with the gear (22).

8. The third rail support adjustment structure according to claim 1, characterized in that, The movable claw (3) has multiple second strip holes (6), all of which are arranged along the moving direction of the movable claw (3). The locking mechanism (4) locks the movable claw (3) through the second strip holes (6).

9. The third rail support adjustment structure according to claim 8, characterized in that, The locking mechanism (4) includes a screw (43) and a nut (41). The screw (43) is fixed on the fixed arm (1) and passes through the second strip hole (6). The screw (43) and the nut (41) are threaded together to lock the movable claw (3).

10. The third rail support adjustment structure according to claim 1 or 8, characterized in that, The number of locking mechanisms (4) is two, and the two locking mechanisms (4) are respectively arranged on both sides of the adjusting mechanism (2).

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