Pantograph catenary contact pressure monitoring device

Abstract

The utility model belongs to the technical field of railway vehicle detection, and particularly relates to a pantograph catenary contact pressure monitoring device. Comprising a center fixing piece with a fixed position, two sides of the center fixing piece are respectively connected with a first insulation connecting piece and a second insulation connecting piece, and the inner end of the first insulation connecting piece and the inner end of the second insulation connecting piece are connected through a bearing arranged in the center fixing piece; an elastic tension sensor is arranged at the outer end of the first insulating connecting piece, the bottom end of the tension sensor is fixed on the first insulating connecting piece, the top end of the tension sensor is connected with a fixing piece, and the fixing piece is fixedly connected with the central fixing piece at the same time; the outer end of the second insulation connecting piece is provided with a wire pressing clamp which can be pressed on a high-voltage cable. According to the scheme, the overall structure is simplified through the design of the bearing and the fixing plate, so that the manufacturing cost of the device is lower, and the device can be more suitable for pantograph catenary contact pressure monitoring under various different environmental factors.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the rail vehicle detection technical field, concretely relates to a pantograph pantograph contact pressure monitoring device. BACKGROUND

[0002] With the continuous improvement of railway train running speed, the problem of guaranteeing transportation safety is more and more urgent, and the maintenance efficiency and quality of locomotive are an important link of guaranteeing transportation safety, therefore, intelligentization and automation of locomotive fault judgment are very important technical means.

[0003] The pantograph is the only component of locomotive and contact net to obtain electric energy, and the coupling characteristics of pantograph and contact net determine the quality of electric energy in transmission process, and the running state of pantograph on the line directly affects the safe operation of train.

[0004] The detection of pantograph includes the detection of static contact pressure, slide plate thickness, pantograph horizontal center line and the like of pantograph by adopting locomotive pantograph detection system, but the detection precision is poor, and pantograph frame deformation, slide plate crack, missing installation screw and the like cannot be identified.

[0005] Among them, the purpose of pantograph pantograph contact pressure monitoring is to ensure that there is a certain contact pressure between the contact net and the pantograph, if the contact pressure is too small, the pantograph is easy to separate from the contact net and produce electric arc, forming a safety hazard, and if the contact pressure is too large, it will cause local deformation of the contact net, cause fatigue damage of the contact net, and increase the wear of the pantograph and the contact net, and even cause pantograph accident.

[0006] Correspondingly, the existing pressure monitoring mostly adopts the direct measurement mode of pantograph and contact net contact, adopts a single force support and contact net contact, then reads the reading of the force support when the pantograph passes through the force support, and this measurement mode is easy to be affected by instantaneous impact force, and the measurement precision is difficult to guarantee.

[0007] Therefore, the utility model patent with publication number CN220751424U designs a tool structure, which automatically transmits the contact force at the contact point to the tension and compression force sensor through the lever principle, and then improves the measurement precision. But in the actual use process, it is found that the structure design is relatively complex, and multiple fixed rods are needed to maintain balance, which has high requirements on the implementation site, conditions and environment. UTILITY MODEL CONTENT

[0008] In view of the above problems existing in the prior art, the utility model aims to provide a pantograph pantograph contact pressure monitoring device with simpler and more reasonable structure design, which can be reasonably applied to pantographs under various environmental conditions.

[0009] To solve the above problems, the utility model adopts the technical scheme as follows:

[0010] A pantograph pantograph contact pressure monitoring device, the device includes fixed center solid, the center solid is connected with first insulation connecting piece and second insulation connecting piece on both sides respectively, the inner end of first insulation connecting piece and the inner end of second insulation connecting piece are connected through the bearing arranged in the center solid inside;

[0011] The first insulation connecting piece and the second insulation connecting piece are in horizontal state under the action of external force;

[0012] The outer end of first insulation connecting piece is equipped with the tension sensor that has elasticity itself, the tension sensor is vertically arranged, the bottom end of tension sensor is fixed on first insulation connecting piece, the top end of tension sensor is connected with fixed part, and fixed part is fixedly connected with center solid simultaneously;

[0013] The outer end of second insulation connecting piece is equipped with the wire clamp that can be pressed on high voltage cable;

[0014] The distance from high voltage cable pressed under wire clamp to bearing is same with the distance from tension sensor to bearing.

[0015] Further, the first insulation connecting piece and the second insulation connecting piece are both insulators.

[0016] Further, the bottom of wire clamp is equipped with the notch matched with the shape of high voltage cable.

[0017] Further, the fixed part is fixed plate installed on the top of center solid, and the fixed plate extends horizontally to the top of tension sensor and is fixedly connected with wall body through fixed connection flange.

[0018] Further, the length of first insulation connecting piece and second insulation connecting piece is equal.

[0019] Further, the bearing adopts ceramic material.

[0020] Compared with prior art, the utility model has the beneficial effects that:

[0021] The present scheme simplifies the overall structure through the design of bearing and fixed plate, so that the manufacturing cost of the device is more low, and the device can be more suitable for pantograph pantograph contact pressure monitoring under various environmental factors. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is side structure schematic view of the device;

[0023] In the figure: 1 - center fixture; 2 - first insulating connector; 3 - second insulating connector; 4 - bearing; 5 - tension sensor; 51 - fixed connection flange; 6 - fixing member; 61 - fixed plate; 7 - wire pressing clamp; 71 - notch. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with specific embodiments.

[0025] As Figure 1 shown, the pantograph net contact pressure monitoring device, including with wall fixed connection's fixed plate 61, this fixed plate 61 transversely sets up, and its end is fixed with wall through fixed connection flange 51.

[0026] The other end on this fixed plate 61 is installed with center fixture 1 at the bottom, and the inside of center fixture 1 is provided with a bearing 4 that can rotate in the vertical plane, and the bearing 4 adopts ceramic material. On the left and right sides of center fixture 1, first insulating connector 2 and second insulating connector 3 connected with bearing 4 are respectively arranged, wherein first insulating connector 2 and second insulating connector 3 are both insulators, and the lengths of the two are the same, and they keep horizontal state together under the condition of not being affected by external force.

[0027] A tension sensor 5 with self elasticity is arranged at the outer end of first insulating connector 2, and the tension sensor 5 is vertically arranged, and the bottom end is fixed on first insulating connector 2, and the top end is connected with fixing member 6, that is, the aforementioned fixed plate 61. Thus, we realize the installation position fixation of tension sensor 5 on the opposite side.

[0028] On the other side, the outer end of second insulating connector 3 is provided with a wire pressing clamp 7 that can be pressed on the high-voltage cable, and the bottom of wire pressing clamp 7 is provided with a notch 71 matched with the shape of the high-voltage cable. In addition, the distance from the high-voltage cable pressed under wire pressing clamp 7 to bearing 4 is the same as the distance from tension sensor 5 to bearing 4, and further, the lengths of first insulating connector 2 and second insulating connector 3 are also the same, and the two can be the same object. Thus, in the actual use process, when the train pantograph is in working state, the high-voltage cable is forced to lift up, and the force is transmitted to tension sensor 5 through the lever mode, and tension sensor 5 transmits the received tension data back to the lower computer, and the system can automatically judge whether the pantograph contact pressure value is within the normal range.

[0029] Figure 1At the same time, the case in an embodiment is shown, at this time, according to the principle of lever: F1*L1=F2*L2; L1=725; L2=725; F2=F1 can be obtained; Considering the bearing friction and other factors, F2=ηF1 (η is the bearing friction and other coefficients) η is determined according to the actual situation.

[0030] The scheme simplifies the overall structure through the design of the bearing 4 and the fixed plate 61, so that the manufacturing cost of the device is more low, and the device can be more suitable for pantograph pantograph contact pressure monitoring under various environmental factors.

Claims

1. A pantograph bow pantograph contact pressure monitoring device, characterized by, The device comprises a fixed center fixed part (1), which is connected with a first insulation connecting part (2) and a second insulation connecting part (3) on two sides respectively, and the inner end of the first insulation connecting part (2) and the inner end of the second insulation connecting part (3) are connected through a bearing (4) arranged inside the center fixed part (1); The first insulation connecting part (2) and the second insulation connecting part (3) are in a horizontal state under no external force; The outer end of the first insulation connecting part (2) is provided with a tension sensor (5) with elasticity, the tension sensor (5) is vertically arranged, the bottom end of the tension sensor (5) is fixed on the first insulation connecting part (2), and the top end of the tension sensor (5) is connected with a fixing part (6), and the fixing part (6) is fixedly connected with the center fixed part (1) at the same time; The outer end of the second insulation connecting part (3) is provided with a wire pressing clamp (7) which can be pressed on a high-voltage cable; The distance from the high-voltage cable pressed under the wire pressing clamp (7) to the bearing (4) is the same as the distance from the tension sensor (5) to the bearing (4).

2. The pantograph bow current collector pressure monitoring device of claim 1, wherein, The first insulation connecting part (2) and the second insulation connecting part (3) are both insulators.

3. The pantograph bow current collector pressure monitoring device of claim 1, wherein, The bottom of the wire pressing clamp (7) is provided with an opening (71) matched with the shape of the high-voltage cable.

4. The pantograph bow current collector pressure monitoring device of claim 1, wherein, The fixing part (6) is a fixing plate (61) installed on the top of the center fixed part (1), the fixing plate (61) extends transversely above the tension sensor (5) and is fixedly connected with the wall through a fixed connection flange (51).

5. The pantograph bow current collector pressure monitoring device of claim 1, wherein, The length of the first insulation connecting part (2) and the second insulation connecting part (3) is equal.

6. The pantograph bow current collector pressure monitoring device of claim 1, wherein, The bearing (4) is made of ceramic material.

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