Positioner for urban rail transit overhead line system

Abstract

The invention relates to a positioner for an urban rail transit overhead line system. The positioner comprises a fixed seat; the fixed body is vertically arranged and is rotationally arranged with the fixed seat; the two connecting rods are arranged in parallel, and the end parts of the two connecting rods are riveted with the top and the bottom of the fixed body respectively; the positioning body is vertically arranged and is riveted with the other ends of the two connecting rods; the positioning wire clamp is fixed at the bottom of the positioning body and clamps the contact wire; the fixing seat is connected with the positioning pipe located above the fixing seat, the fixing body is hinged to the fixing seat, that is, the fixing body can rotate relative to the fixing seat, the fixing body, the two connecting rods and the positioning body form a parallelogram structure, the bottom of the positioning body is provided with two positioning wire clamps, and the positioning wire clamps are used for clamping a contact wire; due to the design of the parallelogram structure, when a train passes through a positioning point, under the action of the lifting force of a pantograph, the positioner freely moves up and down within a certain range, no hard point is generated, and good wind stability is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of electrified rail transit power supply, in particular to a positioner for an urban rail transit contact network. Background Art

[0002] The contact network positioning device connects the contact network line and the arm, and is one of the key equipment of the railway pantograph system. Its function is to fix the contact line in the necessary spatial position for the pantograph to draw current, so as to ensure that the pantograph can always slide in contact with the contact line, thereby obtaining high-quality electricity and supplying stable operation of the train. Among them, the positioner is a component that directly fixes the contact line. Its safety, stability and fatigue resistance have a key impact on the safety of pantograph operation and the quality of current collection. Its structure should be simple and stable to ensure good contact between the pantograph and the contact line and high-quality current collection during operation.

[0003] At present, urban rail transit using low-voltage direct current generally uses double contact wires, which requires two positioners accordingly. However, under the influence of the positive and negative winds of the train, the positioning device and its supporting parts will continue to swing, and it is difficult for the two positioners to remain parallel at all times, and it is impossible to ensure that the two contact wires maintain good contact with the pantograph. In addition, severe vibration may cause positioning wear, and may also cause problems such as poor dynamic contact between the pantograph and the catenary, and excessive lifting of the contact network positioning. Therefore, it is necessary to propose a new type of positioner to solve the shortcomings of current technology. Summary of the invention

[0004] The technical problem to be solved by the present invention is to propose a new type of positioner to solve the shortcomings of the current technology.

[0005] The technical solution adopted by the present invention is:

[0006] The present invention is a positioner for an urban rail transit contact network, comprising: a fixing seat; a fixing body, which is vertically rotatably arranged with the fixing seat; two connecting rods, which are arranged in parallel, and whose ends are riveted to the top and the bottom of the fixing body respectively; a positioning body, which is vertically arranged and hinged to the other ends of the two connecting rods; the fixing body, the two connecting rods, and the positioning body form a parallelogram structure; a positioning wire clamp, which is fixed to the bottom of the positioning body and clamps the contact wire;

[0007] In this solution, the fixed seat is connected to the positioning tube located above it, and the fixed body is hinged to the fixed seat, that is, the fixed body can rotate relative to the fixed seat, and the fixed body, two connecting rods, and the positioning body form a parallelogram structure. A positioning wire clamp is provided at the bottom of the positioning body, and the function of the positioning wire clamp is to clamp the contact wire; the design of the parallelogram structure enables the positioner to move freely up and down within a certain range under the lifting force of the pantograph when the train passes the positioning point, without producing hard points, and with good wind stability.

[0008] In order to prevent the connecting rod from rotating too much and interfering with the positioning tube of the wrist-arm support device, the present invention adopts a first limit rod set on the inner side of the fixed body; when one of the connecting rods is forced to rotate upward, the upper surface of the connecting rod is against the first limit rod to limit the continued rotation of the connecting rod.

[0009] The first limit rod is fixedly arranged on the inner side of the fixed body. When the connecting rod is forced to rotate upward, the first limit rod abuts against the upper surface of the connecting rod, thereby limiting the connecting rod from continuing to rotate, thereby preventing the connecting rod, the positioning body and the positioning tube from colliding.

[0010] Similarly, the second limit rod can also be set inside the positioning body, and the second limit rod abuts against the lower surface of the connecting rod, which can also limit the connecting rod from continuing to rotate upward and prevent the connecting rod, the positioning body and the positioning tube from colliding.

[0011] The first limiting rod and the second limiting rod can be installed at the inner side of the fixing body, the inner side of the positioning body, or one of them.

[0012] How to realize the hinge between the fixed seat and the fixed body, the present invention adopts the fixed seat to be provided with upper and lower ears; the fixed body is vertically located between the two ears; the rotating shaft passes through the ears and the fixed body to rotatably connect the fixed seat and the fixed body;

[0013] Two ears are arranged at the end of the fixed body, and the rotating shaft passes through the two ears and the fixed body, thereby realizing the rotational connection between the fixed body and the fixed seat; when the temperature changes and the contact line moves along the line, the parallelogram structure can take the fixed seat as the center and flexibly move along the line direction with the contact line; this connection method avoids abnormal wear at the connection between the traditional positioner and the positioning ring hook, and improves the reliability of the positioning device.

[0014] Compared with the traditional two positioners, this type of positioner fixes the two positioning wire clamps on the positioning body, which can always keep the two contact wires on the same horizontal plane, thereby ensuring that the two contact wires can maintain good contact with the pantograph and achieve high-quality current collection by the train; and, by changing from two positioners to one positioner, the number of parts and fasteners is reduced, the risk of fasteners loosening and falling off in a vibration environment is reduced, and installation is more convenient.

[0015] The beneficial effects of the present invention are as follows: the present invention is a positioner for contact network of urban rail transit, the fixed seat is connected with the positioning tube, the fixed body is hinged with the fixed seat, that is, the fixed body can rotate relative to the fixed seat, the fixed body, two connecting rods and the positioning body constitute a parallelogram structure, and two positioning wire clamps are arranged at the bottom of the positioning body to fix the two contact wires; this type of structure can always keep the two contact wires in the same horizontal plane, thereby ensuring that the two contact wires can maintain good contact with the pantograph and realize high-quality current collection of the train; the setting of the limit rod can ensure that the positioner does not interfere with the positioning tube located above it at all times; the setting of the fixed seat and the fixed body is hinged, which can not only realize that the positioner can flexibly move along the line direction with the contact wire when the temperature changes, but also avoid abnormal wear at the connection between the traditional positioner and the positioning ring hook, thereby improving the reliability and stability of the positioning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 is a schematic structural diagram of another embodiment of the present invention;

[0019] In the figure: 1-fixed seat, 2-fixed body, 3-connecting rod, 4-positioning body, 5-positioning wire clamp, 6-first limiting rod, 7-second limiting rod, 8-support ear, 9-rotating shaft. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] Example 1

[0022] like Figure 1-2 As shown, the present invention is a positioner for an urban rail transit contact network, comprising: a fixing seat 1; a fixing body 2, which is vertically rotatably arranged with the fixing seat 1; two connecting rods 3, which are arranged in parallel, and whose ends are riveted to the top and bottom of the fixing body 2 respectively; a positioning body 4, which is arranged vertically and is riveted to the other ends of the two connecting rods 3; the fixing body 2, the two connecting rods 3, and the positioning body 4 form a parallelogram structure; a positioning wire clamp 5, which is fixed to the bottom of the positioning body 4 and clamps the contact wire;

[0023] In this solution, the fixed seat is connected to the positioning tube located above it, and the fixed body is hinged to the fixed seat, that is, the fixed body can rotate relative to the fixed seat, and the fixed body, two connecting rods, and the positioning body form a parallelogram structure. A positioning wire clamp is provided at the bottom of the positioning body, and the function of the positioning wire clamp is to clamp the contact wire; the design of the parallelogram structure enables the positioner to move freely up and down within a certain range under the lifting force of the pantograph when the train passes the positioning point, without producing hard points, and with good wind stability.

[0024] Example 2

[0025] like Figure 2 As shown, on the basis of Example 1, in order to prevent the connecting rod from rotating too much and interfering with the positioning tube of the arm support device, the present invention adopts a first limit rod 6 arranged on the inner side of the fixed body 2; under the action of the pantograph lifting force, one of the connecting rods 3 of the positioner is forced to rotate upward, and when the two connecting rods are rotated to a horizontal state, the upper surface of the connecting rod 3 is against the first limit rod 6, thereby limiting the continued rotation of the connecting rod 3.

[0026] The first limit rod is fixedly arranged on the inner side of the fixed body. When the connecting rod is forced to rotate upward, the first limit rod abuts against the upper surface of the connecting rod, thereby limiting the connecting rod from continuing to rotate, thereby preventing the connecting rod, the positioning body and the positioning tube located above the two from colliding.

[0027] Example 3

[0028] like Figure 1 As shown, based on Example 1, similarly, the second limit rod 7 can also be set on the inner side of the positioning body 4, and the second limit rod 7 is against the lower surface of the connecting rod 3. This can also limit the connecting rod 3 from continuing to rotate upward, preventing the connecting rod 3, the positioning body 4 and the positioning tube located above the two from colliding.

[0029] The first limiting rod and the second limiting rod can be installed at the inner side of the fixing body, the inner side of the positioning body, or one of them.

[0030] Example 4

[0031] On the basis of Example 1, how to realize the hinge between the fixed seat and the fixed body, the present invention adopts a fixed seat 1 with upper and lower ears 8; the fixed body 2 is vertically located between the two ears 8; the rotating shaft 9 passes through the ears 8 and the fixed body 2 to rotatably connect the fixed seat 1 and the fixed body 2;

[0032] Two ears are arranged at the end of the fixed body, and the rotating shaft passes through the two ears and the fixed body, thereby realizing the rotational connection between the fixed body and the fixed seat; when the temperature changes and the contact line moves along the line, the quadrilateral structure can take the fixed seat as the center and flexibly move along the line direction with the contact line; this connection method avoids abnormal wear at the connection between the traditional positioner and the positioning ring hook, and improves the reliability of the positioning device.

[0033] Compared with the traditional two positioners, this type of positioner fixes the two positioning wire clamps on the positioning body, which can always keep the two contact wires on the same horizontal plane, thereby ensuring that the two contact wires can maintain good contact with the pantograph and achieve high-quality current collection by the train; and, by changing from two positioners to one positioner, the number of parts and fasteners is reduced, the risk of fasteners loosening and falling off in a vibration environment is reduced, and installation is more convenient.

[0034] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A locator for urban rail transit contact network, characterized in that: include: Fixed seat; A fixed body, which is vertically rotatably arranged with the fixed seat; Two connecting rods are arranged in parallel, and their ends are riveted to the top and bottom of the fixed body respectively; A positioning body, which is vertically arranged and hinged to the other ends of the two connecting rods; The fixed body, the two connecting rods and the positioning body form a parallelogram structure; The positioning wire clamp is fixed at the bottom of the positioning body and clamps the contact wire.

2. A locator for an urban rail transit contact network according to claim 1, characterized in that: A first limiting rod is arranged on the inner side of the fixed body; When one of the connecting rods is forced to rotate upward, the upper surface of the connecting rod abuts against the first limiting rod to limit the further rotation of the connecting rod.

3. The urban rail transit contact network locator according to claim 1, characterized in that: A second limiting rod is arranged on the inner side of the positioning body; When one of the connecting rods is forced to rotate upward, the lower surface of the connecting rod abuts against the second limiting rod to limit the further rotation of the connecting rod.

4. The urban rail transit contact network locator according to claim 1, characterized in that: The fixing seat is provided with supporting ears at the top and the bottom; The fixed body is vertically located between the two supporting ears; A rotating shaft passes through the support ear and the fixed body to rotatably connect the fixed seat and the fixed body.

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