A pantograph rising super-high limiting detection device

Abstract

The utility model discloses a kind of pantograph ascending pantograph ultra-high limit detection devices, belong to pantograph detection technical field, for pantograph ascension detection, pantograph includes base, lifting arm, bow head and pantograph lowering detection gas path, the upper arm part of lifting arm is connected bow head, the lower arm part of lifting arm is connected base by center pivot, after the leakage of pantograph lowering detection gas path detection, it will trigger pantograph lowering action, ultra-high limit detection device includes trigger mechanism and detection mechanism, the trigger mechanism is fixed in one end of the center pivot and follows the center pivot rotation, detection mechanism is located in the trigger mechanism side and is connected with the base, the trigger mechanism after rotation and the detection mechanism abut, the detection mechanism is equipped with mechanical valve, the mechanical valve is connected with pantograph lowering detection gas path by hose. The utility model can prevent pantograph scraping accident caused by pantograph ascending too high, simultaneously as redundancy protection, can realize pantograph lowering action when height mechanical limit fails.

Description

Technical Field

[0001] This utility model belongs to the field of pantograph detection technology, and in particular relates to a pantograph raising height limit detection device. Background Technology

[0002] Referring to Chinese Patent No. CN212555843U, which is a previously filed application by the applicant, this patent discloses a single-arm spring pantograph. The patent discloses the specific lifting structure and working principle of the single-arm spring pantograph, including a base, a lifting arm, and a pantograph head. The upper arm of the lifting arm is connected to the pantograph head, and the lower arm is connected to the base via a central pivot. A pantograph lowering device and a pantograph raising device are installed between the base and the central pivot. The pantograph raising device includes a telescopic elastic reset component. A synchronously rotating transmission component is provided on the central pivot. The fixed end of the telescopic elastic reset component is mounted on the base, and the movable end of the telescopic elastic reset component is connected to the transmission component via a chain.

[0003] The bow-raising device is formed by combining a telescopic elastic reset component with a chain-type transmission mechanism, which has high mechanical performance and stability, low failure rate, and significantly extended service life of transmission mechanism components; the bow-lowering is driven by an electric push rod or cylinder, which effectively improves control accuracy.

[0004] However, the above solution still has some problems. If the pantograph does not detect a lowering, it will remain in the raising state, ignoring the height limit for raising the pantograph. When the pantograph continues to raise, in areas without a contact wire, it may rise to the height limited by the mechanical stop. If the mechanical stop fails, the pantograph will continue to rise, causing it to rise too high and potentially leading to a scraping accident.

[0005] Therefore, a pantograph raising height limit detection device is needed to prevent pantograph scraping accidents caused by excessive pantograph raising. Utility Model Content

[0006] The purpose of this invention is to provide a pantograph raising height limit detection device to solve the problems existing in the background art.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A pantograph raising height limit detection device is provided for detecting pantograph raising. The pantograph includes a base, a lifting arm, a pantograph head, and a lowering detection air path. The upper arm of the lifting arm is connected to the pantograph head, and the lower arm of the lifting arm is connected to the base via a central rotating shaft. The lowering detection air path triggers a lowering action when it detects an air leak. The raising height limit detection device includes a triggering mechanism and a detection mechanism. The triggering mechanism is fixed to one end of the central rotating shaft and rotates with the central rotating shaft. The detection mechanism is located on one side of the triggering mechanism and connected to the base. After the triggering mechanism rotates, it abuts against the detection mechanism. The detection mechanism is equipped with a mechanical valve, which is connected to the lowering detection air path via a hose.

[0009] Furthermore, the triggering mechanism includes a connecting frame, a connecting rod, and an abutment. The connecting frame has a U-shaped structure. One end of the U-shaped opening of the connecting frame is fixed to the central rotating shaft, and the other end of the U-shaped opening of the connecting frame extends out of the base. The end of the U-shaped opening away from the connecting frame is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the abutment.

[0010] Furthermore, the detection mechanism also includes a mounting base and a detection head. The mechanical valve is fixed on the mounting base, one end of the detection head is connected to the mechanical valve, and the end of the detection head away from the mechanical valve is located on the rotation trajectory of the abutment. The rotation of the detection head drives the mechanical valve to open and close, and the mechanical valve is connected to the hose.

[0011] Furthermore, an insulating plate is provided below the base, and the mounting seat is fixed on the insulating plate.

[0012] The beneficial effects of this utility model are:

[0013] 1) Prevent pantograph scraping accidents caused by excessive pantograph raising, and reduce losses to pantographs, overhead contact lines, etc.

[0014] 2) The ultra-high limit detection device serves as redundant protection and can lower the bow when the mechanical height limit fails. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the position of the pantograph raising height limit detection device of this utility model on the pantograph;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a perspective view of a pantograph raising height limit detection device according to the present invention;

[0018] In the diagram, 1-base, 2-central shaft, 3-trigger mechanism, 31-connecting frame, 32-connecting rod, 33-abutment joint, 4-detection mechanism, 41-mechanical valve, 42-mounting seat, 43-detection head, 44-hose, and 5-insulating plate. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] See Figures 1-3 This utility model provides a technical solution:

[0021] like Figure 1 A pantograph raising height limit detection device is disclosed for detecting pantograph raising. The pantograph includes a base 1, a lifting arm, a pantograph head, and a lowering detection air path. The upper arm of the lifting arm is connected to the pantograph head, and the lower arm of the lifting arm is connected to the base 1 via a central rotating shaft 2. The lowering detection air path triggers a lowering action when it detects a leak. The raising height limit detection device includes a triggering mechanism 3 and a detection mechanism 4. The triggering mechanism 3 is fixed to one end of the central rotating shaft 2 and rotates with the central rotating shaft 2. The detection mechanism 4 is located on one side of the triggering mechanism 3 and is connected to the base 1. After the triggering mechanism 3 rotates, it abuts against the detection mechanism 4. The detection mechanism 4 is equipped with a mechanical valve 41, which is connected to the lowering detection air path via a hose 44.

[0022] Through the above technical solution, during the pantograph raising process, the central rotating shaft 2 rotates to drive the lifting arm to rise. Since the triggering mechanism 3 follows the rotation of the central rotating shaft 2, when the pantograph rises beyond the limit height, the triggering mechanism 3 rotates to abut against the detection mechanism 4. The triggering mechanism 3 triggers the mechanical valve 41 of the detection mechanism 4, causing the mechanical valve 41 to open and exhaust air. Since the mechanical valve 41 is connected to the pantograph lowering detection air circuit, when the pantograph lowering detection air circuit detects air leakage, it will activate, report a fault, and give a lowering signal, causing the pantograph to lower and remain in the lowered state.

[0023] like Figure 2 and Figure 3As shown, the triggering mechanism 3 includes a connecting frame 31, a connecting rod 32, and an abutment 33. The connecting frame 31 has a U-shaped structure, which allows one end of the U-shaped opening of the connecting frame 31 to be fixed to the central rotating shaft 2, while the other end of the U-shaped opening can extend beyond the base 1, avoiding interference with the support frame supporting the central rotating shaft 2. The connecting rod 32 is fixed to the end of the U-shaped opening that extends beyond the base 1 and connects to the abutment 33. In the initial state, the connecting rod 32 and the abutment 33 face downwards. Since the central rotating shaft 2 does not rotate a full revolution, the triggering mechanism 3 will not collide with the detection mechanism 4 during normal pantograph raising and lowering.

[0024] Furthermore, the detection mechanism 4 also includes a mounting base 42 and a detection head 43. The mechanical valve 41 is fixed on the mounting base 42. One end of the detection head 43 is connected to the mechanical valve 41. The end of the detection head 43 away from the mechanical valve 41 is located on the rotation trajectory of the abutment 33. The rotation of the detection head 43 drives the mechanical valve 41 to open and close. The mechanical valve 41 is connected to the hose 44.

[0025] With the above technical solution, since the end of the detection head 43 away from the mechanical valve 41 is located on the rotation trajectory of the abutment 33, when the pantograph rises above the height limit, the abutment 33 will rotate and abut against the detection head 43. At this time, the detection head 43 is driven to rotate by the abutment 33, which in turn drives the valve stem inside the mechanical valve 41 to rotate, causing the mechanical valve 41 to open the valve hole to release air. At this time, when the pantograph lowering detection air circuit detects air leakage, it will execute an alarm and lowering action.

[0026] Furthermore, an insulating plate 5 is provided below the base 1, and the mounting base 42 is fixed on the insulating plate 5.

[0027] The above technical solution blocks the transmission of high-voltage current to the vehicle body through the insulating plate 5.

[0028] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A pantograph raising height limit detection device for detecting pantograph raising, the pantograph including a base (1), a lifting arm, a pantograph head, and a lowering detection air path, the upper arm of the lifting arm being connected to the pantograph head, the lower arm of the lifting arm being connected to the base (1) via a central rotating shaft (2), the lowering detection air path triggering a lowering action upon detecting air leakage, characterized in that: The ultra-high limit detection device includes a triggering mechanism (3) and a detection mechanism (4). The triggering mechanism (3) is fixed to one end of the central rotating shaft (2) and rotates with the central rotating shaft (2). The detection mechanism (4) is located on one side of the triggering mechanism (3) and connected to the base (1). After the triggering mechanism (3) rotates, it abuts against the detection mechanism (4). The detection mechanism (4) is provided with a mechanical valve (41). The mechanical valve (41) is connected to the bow lowering detection air circuit through a hose (44).

2. The pantograph raising height limit detection device according to claim 1, characterized in that: The triggering mechanism (3) includes a connecting frame (31), a connecting rod (32), and an abutment (33). The connecting frame (31) has a U-shaped structure. One end of the U-shaped opening of the connecting frame (31) is fixed to the central rotating shaft (2). The other end of the U-shaped opening of the connecting frame (31) extends out of the base (1). The end of the U-shaped opening away from the connecting frame (31) is connected to one end of the connecting rod (32), and the other end of the connecting rod (32) is connected to the abutment (33).

3. The pantograph raising height limit detection device according to claim 2, characterized in that: The detection mechanism (4) also includes a mounting base (42) and a detection head (43). The mechanical valve (41) is fixed on the mounting base (42). One end of the detection head (43) is connected to the mechanical valve (41). The end of the detection head (43) away from the mechanical valve (41) is located on the rotation trajectory of the abutment (33). The rotation of the detection head (43) drives the mechanical valve (41) to open and close. The mechanical valve (41) is connected to the hose (44).

4. The pantograph raising height limit detection device according to claim 3, characterized in that: An insulating plate (5) is provided below the base (1), and the mounting seat (42) is fixed on the insulating plate (5).

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