Auxiliary device for measuring deflection of cantilever of overhead line system of high-speed railway

Abstract

The utility model relates to a high-speed railway overhead line system cantilever offset measurement auxiliary device, which comprises a reference plate, the reference plate is cuboid-shaped, a mounting seat is fixed at the center of the upper side of the reference plate, the mounting seat comprises two side plates which are arranged in parallel, the side plates are perpendicular to the reference plate, and the two side plates are parallel to each other. The mounting base is used for mounting a laser measuring instrument, the lower end face of the laser measuring instrument is perpendicular to the laser emission direction, and the lower end face of the laser measuring instrument is parallel to the upper surface of the datum plate. According to the utility model, the accuracy of the offset adjustment of the cantilever is improved, and the offset adjustment quality of the cantilever can be effectively controlled; compared with the prior art, the method has the advantages that manual interference factors are reduced, unqualified cantilever offset adjustment, large-area reworking and repeated adjustment caused by personnel deviation are avoided, construction efficiency is improved, site construction progress is accelerated, and the method is of great significance to the whole overhead line system construction period and project quality.

Description

Technical Field

[0001] This utility model relates to the field of railway catenary maintenance technology, and in particular to an auxiliary device for measuring the offset of the catenary arms of high-speed railways. Background Technology

[0002] The catenary cantilever arm of a high-speed railway catenary is a supporting device used to bear the weight of the contact suspension. It is an indispensable part of the catenary system. Its structure consists of a horizontal cantilever arm, an inclined cantilever arm, and connecting components on the cantilever arms. Cantilever arm supports are installed between the horizontal and inclined cantilever arms to ensure the stability of the cantilever arm structure. After the cantilever arm installation and the catenary cable erection are completed, the cantilever arm offset needs to be adjusted according to the site temperature. The adjustment of the cantilever arm offset must be highly precise, with a deviation not exceeding 20mm. The accuracy of the cantilever arm offset adjustment directly affects the quality of the catenary cable, the elastic suspender cable, and the entire contact suspension, and is the basis for contact suspension adjustment.

[0003] The traditional cantilever offset adjustment method uses a laser measuring instrument. One person takes the measurement while another person stands outside the rail and visually directs the measuring personnel to align the measuring instrument perpendicular to the rail and align it with the cantilever base to find the initial position of the cantilever. Then, the cantilever offset is selected by using a cantilever offset table and the on-site temperature. The offset is then marked on the rail, and the workers on the ladder truck relay the marked position to the catenary cable to complete the cantilever offset adjustment.

[0004] Ensuring the perpendicularity of the measuring instrument to the rail is crucial for controlling errors. Existing cantilever offset adjustment schemes require a high level of skill from the operators, which can easily lead to significant deviations. This results in poor control of cantilever offset accuracy, often requiring rework and secondary adjustments, thus impacting the efficiency of cantilever adjustment work.

[0005] Therefore, an auxiliary device for measuring the offset of the overhead contact line cantilever arm in high-speed railways is needed to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing an auxiliary device for measuring the offset of the overhead contact line cantilever arm in high-speed railways.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A high-speed railway catenary cantilever offset measurement auxiliary device includes a reference plate, the reference plate is cuboid in shape, a mounting base is fixed at the upper center of the reference plate, the mounting base includes two parallel side plates, the side plates are perpendicular to the reference plate, the mounting base is used to install a laser measuring instrument, the lower end face of the laser measuring instrument is perpendicular to the laser emission direction, and the lower end face of the laser measuring instrument is parallel to the upper surface of the reference plate.

[0008] Preferably, the lower end face of the laser measuring instrument is in contact with the upper surface of the reference plate.

[0009] Preferably, at least one of the side plates is fitted with a first clamping member on its outer side.

[0010] Preferably, an auxiliary positioning plate is vertically arranged on one side of the reference plate, and the auxiliary positioning plate forms a 90° angle with the side of the reference plate, which is suitable for fitting and positioning with the top and side surfaces of the rail.

[0011] Preferably, both the reference plate and the mounting base are made of aluminum alloy.

[0012] Preferably, the mounting base is provided with scale lines.

[0013] Preferably, the mounting base has a sliding seat internally connected to it, the laser measuring instrument is installed in the mounting groove at the upper end of the sliding seat, and the lower end surface of the sliding seat is in contact with the upper surface of the reference plate.

[0014] Preferably, the bottom wall of the mounting groove of the sliding seat is parallel to the lower end face of the sliding seat, and the lower end face of the laser measuring instrument is in contact with the bottom wall of the mounting groove of the sliding seat.

[0015] Preferably, a second clamping member is provided on both sides of the mounting groove of the sliding seat.

[0016] Preferably, lubricating oil is provided between the sliding seat and the mounting seat.

[0017] The beneficial effects of this utility model are: it improves the accuracy of the cantilever offset adjustment and can effectively control the quality of the cantilever offset adjustment; it reduces human interference factors and avoids unqualified cantilever offset adjustment due to human error, resulting in large-scale rework and repeated adjustments, thereby improving construction efficiency, accelerating on-site construction progress, and having great significance for the entire overhead contact line construction period and project quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 for Figure 1 Sectional view at point AA;

[0020] Figure 3 This is a cross-sectional view of the reference plate, auxiliary positioning plate, and rail when they are in contact and positioned.

[0021] Figure 4 This is a schematic diagram of another embodiment of the present invention;

[0022] Figure 5This is a schematic diagram of the overall structure of the device during construction and use;

[0023] Figure 6 This is a top view of the device during operation and positioning on straight and curved rails.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Laser measuring instrument; 2. Reference plate; 3. Mounting base; 4. First clamping element; 5. Auxiliary positioning plate; 6. Rail; 7. Sliding seat; 8. Second clamping element; 9. Wrist arm. Detailed Implementation

[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0027] like Figures 1-6 As shown, an auxiliary device for measuring the offset of a cantilever arm in a high-speed railway contact network includes a reference plate 2, which is rectangular in shape. A mounting base 3 is fixed at the center of the upper side of the reference plate 2. Both the reference plate 2 and the mounting base 3 are made of aluminum alloy, featuring light weight, high rigidity, high precision, and resistance to deformation. The mounting base 3 includes two parallel side plates, perpendicular to the reference plate 2. The mounting base 3 is used to mount a laser measuring instrument 1, with the lower end face of the laser measuring instrument 1 perpendicular to the laser emission direction and parallel to the upper surface of the reference plate 2. The mounting base 3 has scale lines for observing the translation distance when the laser measuring instrument 1 is adjusted. A first clamping member 4 is mounted on the outer side of one of the side plates. In this invention, the first clamping member 4 can be a hand-tightening bolt, which is threadedly connected to a threaded hole on the side plate.

[0028] like Figure 2 , Figure 3 As shown, an auxiliary positioning plate 5 is vertically arranged on one side of the reference plate 2. The auxiliary positioning plate 5 forms a 90° angle with the side of the reference plate 2, which is suitable for fitting and positioning with the top and side surfaces of the rail 6, ensuring that the upper surface of the reference plate 2 is parallel to the upper surface of the rail.

[0029] Example 1

[0030] The distance between the two side plates on mounting base 3 is the same as the width of laser measuring instrument 1. When using this device, the included angle formed by auxiliary positioning plate 5 and reference plate 2 is clamped onto the rail, such as... Figure 3As shown, position the laser measuring instrument 1 against the top and side surfaces of the rail 6 to ensure that the upper surface of the reference plate 2 is parallel to the upper surface of the rail. Place the laser measuring instrument 1 directly into the mounting base 3, with the lower end face of the laser measuring instrument 1 against the upper surface of the reference plate 2. Since the upper surface of the reference plate 2 is parallel to the upper surface of the rail, the lower end face of the laser measuring instrument 1 is also parallel to the upper surface of the rail. At this time, the laser beam emitted by the laser measuring instrument 1 is perpendicular to the upper surface of the rail. Move the laser measuring instrument 1 within the mounting base 3 so that the laser beam irradiates the position of the cantilever arm base, lock the first clamping piece 4, measure the offset of the cantilever arm 9 from the initial position, and mark it on the rail. The cantilever offset is selected using a cantilever offset gauge and on-site temperature. The first clamping member 4 is loosened, and the laser measuring instrument 1 is moved within the mounting base 3. The moving distance matches the selected offset. The first clamping member 4 is then locked. Simultaneously, the offset is fed back onto the catenary via the projection point of the laser beam emitted by the laser measuring instrument 1. The cantilever offset adjustment is then completed by personnel on the ladder truck. This device facilitates precise alignment of the rail reference plane with the cantilever reference plane offset during offset measurement. It is important to note that when measuring the curved section of the rail, both ends of the reference plate 2 are aligned with the rail. Similarly, the included angle formed by the auxiliary positioning plate 5 and the reference plate 2 is engaged with the rail. At this point, only the two ends are aligned, but the upper surface of the reference plate 2 remains parallel to the upper surface of the rail. Figure 6 The diagram shows the positional relationship of the device during construction measurements on the rail at both straight and curved sections.

[0031] Example 2

[0032] In Embodiment 1, the laser measuring instrument 1 slides directly relative to the mounting base 3, resulting in significant sliding resistance that can affect measurement accuracy and cause wear to the laser measuring instrument 1. Therefore, in the second embodiment of this utility model, as... Figure 4 As shown, a sliding seat 7 is slidably connected inside the mounting base 3. The laser measuring instrument 1 is installed in the mounting groove at the upper end of the sliding seat 7, and the lower end face of the sliding seat 7 is in contact with the upper surface of the reference plate 2. The bottom wall of the mounting groove of the sliding seat 7 is parallel to the lower end face of the sliding seat 7, and the lower end face of the laser measuring instrument 1 is in contact with the bottom wall of the mounting groove of the sliding seat 7, thereby ensuring that the lower end face of the laser measuring instrument 1 is parallel to the upper surface of the rail. Second clamping members 8 are provided on both sides of the mounting groove of the sliding seat 7, and the second clamping members 8 are the same as the first clamping members 4. Lubricating oil is provided between the sliding seat 7 and the mounting base 3 to reduce sliding friction and make sliding smoother. During the measurement process, the laser measuring instrument 1 is fixed in the mounting groove of the sliding seat 7 and locked in place by the second clamping members 8. When it is necessary to move the laser measuring instrument 1, the sliding seat 7 is moved directly, and the first clamping members 4 fix the sliding seat 7, thus fixing the laser measuring instrument 1. In this embodiment, the laser measuring instrument 1 and the sliding seat 7 are integrated into one unit, and the overall measurement principle is still the same as in Embodiment 1.

[0033] The two embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. An auxiliary device for measuring the offset of the overhead contact line cantilever arm in high-speed railways, characterized in that: Includes a reference plate (2), which is rectangular in shape. A mounting base (3) is fixed at the center of the upper side of the reference plate (2). The mounting base (3) includes two parallel side plates, which are perpendicular to the reference plate (2). The mounting base (3) is used to mount a laser measuring instrument (1). The lower end face of the laser measuring instrument (1) is perpendicular to the laser emission direction, and the lower end face of the laser measuring instrument (1) is parallel to the upper surface of the reference plate (2).

2. The auxiliary device for measuring the offset of the overhead contact line cantilever arm of a high-speed railway according to claim 1, characterized in that: The lower end face of the laser measuring instrument (1) is attached to the upper surface of the reference plate (2).

3. The auxiliary device for measuring the offset of the overhead contact line cantilever arm of a high-speed railway according to claim 1, characterized in that: At least one of the side plates is fitted with a first clamping element (4) on its outer side.

4. The auxiliary device for measuring the offset of the overhead contact line cantilever arm of a high-speed railway according to claim 1, characterized in that: An auxiliary positioning plate (5) is vertically arranged on one side of the reference plate (2). The auxiliary positioning plate (5) forms a 90° angle with the side of the reference plate (2), which is suitable for fitting and positioning against the top and side surfaces of the rail (6).

5. The auxiliary device for measuring the offset of the overhead contact line cantilever arm of a high-speed railway according to claim 1, characterized in that: The reference plate (2) and the mounting base (3) are both made of aluminum alloy.

6. The auxiliary device for measuring the offset of the overhead contact line cantilever arm of a high-speed railway according to claim 1, characterized in that: The mounting base (3) is provided with scale lines.

7. The auxiliary device for measuring the offset of the overhead contact line cantilever arm of a high-speed railway according to claim 1, characterized in that: The mounting base (3) has a sliding seat (7) inside it. The laser measuring instrument (1) is installed in the mounting groove at the upper end of the sliding seat (7). The lower end face of the sliding seat (7) is in contact with the upper surface of the reference plate (2).

8. The auxiliary device for measuring the offset of the overhead contact line cantilever arm of a high-speed railway according to claim 7, characterized in that: The bottom wall of the mounting groove of the sliding seat (7) is parallel to the lower end face of the sliding seat (7), and the lower end face of the laser measuring instrument (1) is in contact with the bottom wall of the mounting groove of the sliding seat (7).

9. The auxiliary device for measuring the offset of the overhead contact line cantilever arm of a high-speed railway according to claim 8, characterized in that: The sliding seat (7) is provided with second clamping members (8) on both sides of the mounting groove.

10. The auxiliary device for measuring the offset of the overhead contact line cantilever arm of a high-speed railway according to claim 8, characterized in that: Lubricating oil is provided between the sliding seat (7) and the mounting seat (3).

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