Damping dropper device
The structure consisting of a damping dropper and a rigid connecting rod solves the problems of low elasticity and strength of the dropper, improves the service life and operational stability of the dropper, and prevents the pantograph from squeezing it.
Patent Information
- Application Number
- CN202520294767.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-21
AI Technical Summary
The existing suspension wires have low elasticity, poor extensibility, and low strength, resulting in poor effectiveness in reducing hard points in the contact wire and easy breakage, which can cause railway safety accidents.
A damping dropper device is adopted, including contact wire dropper clamp, catenary dropper clamp and damping device. The damping device and rigid connecting rod are used to increase the structural strength. The hard point buffer device absorbs the airflow or pantograph vibration when the train passes, and prevents the damping device activation hard point and the initial force of contact wire lifting from being generated simultaneously.
The structural strength of the dropper wire was improved, its service life was increased, the amplitude and frequency of vibration were reduced, the instantaneous compression of the pantograph was avoided, and the smooth operation of the contact wire was ensured.
Smart Images
Figure CN223720709U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of contact network, specifically relates to a damping pendant device. BACKGROUND
[0002] In the railway contact network equipment, the pendant is used for hanging the contact line on the load cable, so that the suspension points of the contact line are increased in each span without increasing the support, thereby improving the relaxation and elasticity of the contact line, improving the working quality of the contact line, and the height of the contact line to the rail surface can be ensured by adjusting the length of the pendant.
[0003] The existing pendant generally adopts a hinged wire, and the elasticity and the stretchability are poor, the pendant has a poor effect on reducing the hard points of the contact line when the pantograph passes, and the hinged wire has low structural strength, and when the pendant is broken, a power supply failure occurs, causing a railway safety accident. UTILITY MODEL CONTENTS
[0004] The utility model solves the technical problem that the elasticity and the stretchability of the existing pendant of wire material are poor and the strength is low, and provides a damping pendant device.
[0005] In order to solve the above technical problem, the utility model adopts the following technical scheme: a damping pendant device, comprising a contact line pendant clamp, a load cable pendant clamp and a damping device located between the two, the damping device comprises a shell and a piston rod slidingly installed in the shell, a rigid connecting rod is arranged between the upper end of the shell and the load cable pendant clamp, the damping device has higher structural strength, a hard point buffer device is arranged between the lower end of the piston rod and the contact line pendant clamp, the hard point buffer device has a cavity inside, the lower end of the piston rod is inserted into the cavity and can slide in the cavity.
[0006] Compared with the conventional pendant of wire material, the pendant structure composed of the damping device and the rigid connecting rod has higher structural strength, thereby increasing the service life, and the damping device can fully absorb the airflow or the pantograph vibration caused by the pantograph charging when the train passes, slow down the amplitude and the frequency, play a buffering role, and when the contact line goes up, the contact line pendant clamp drives the hard point buffer device to go up, the relative motion is generated between the hard point buffer device and the piston rod, the lower end of the hard point buffer device is abutted with the piston rod after the idle end distance, the damping device generates the inhibitory effect at this time, the hard point of the damping device itself is prevented from being triggered immediately during the upward process of the contact line, the starting force of the contact line lifting is synchronized, the extrusion of the pantograph lifting moment is prevented, and thereby a more stable buffering effect is obtained.
[0007] The technical person above improves the structural strength of the catenary as a whole by the catenary composed of the damping device and the rigid connecting rod, increases the service life thereof, and avoids the synchronous generation of the starting hard point of the damping device itself and the initial action force of the contact line lifting by utilizing the cavity of the hard point buffer device, thereby preventing the extrusion at the instant of the pantograph lifting.
[0008] Further, the contact line catenary wire clamp is provided with a load cable support connecting clamp on each side, and a support rod is connected between the damping device and each load cable support connecting clamp, and the two support rods are symmetrically distributed on the two sides of the connecting rod, thereby forming a stable triangular structure, so that the force of the contact line acts on the load cable to the maximum extent, and then the force is transmitted to the damping device, thereby avoiding the synchronous vibration of the single catenary structure, so that the damping device cannot bear the force and cannot play a role.
[0009] Further, the lower end of the hard point buffer device is fixed with the contact line catenary wire clamp through high-strength stainless steel bolts, the upper end is inwardly contracted to form a contraction part for preventing the piston rod from being separated, the lower end of the piston rod is provided with a protruding part, the contraction part is abutted against the protruding part at the lower end of the piston rod to realize the connection of the hard point buffer device and the piston rod, and a gap is left between the outer peripheral wall of the piston rod and the inner peripheral wall of the hard point buffer device, so that when the two are relatively moved, the two are in a separated state, so that no interaction force is generated between the two, thereby preventing the extrusion at the instant of the pantograph lifting.
[0010] Further, a sleeve is sleeved and fixed on the shell, the sleeve is welded from a hollow pipe and a wing plate formed by laser cutting of a plate material, two threaded holes are processed on the front face in a jack screw form to be tightly connected with the damping device, two mounting parts are symmetrically arranged on the sleeve, and the two support rods are connected with the shell through the two mounting parts.
[0011] Further, an adapter is arranged between the damping device and the connecting rod, and an electrical connection jumper is connected between the adapter and the contact line catenary wire clamp by bolts, so as to guarantee the same potential voltage of the two connection ends.
[0012] The catenary composed of the damping device and the rigid connecting rod improves the structural strength of the catenary as a whole, increases the service life thereof, and avoids the synchronous generation of the starting hard point of the damping device itself and the initial action force of the contact line lifting by utilizing the cavity of the hard point buffer device, thereby preventing the extrusion at the instant of the pantograph lifting. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model is further described below in combination with the drawings and embodiments.
[0014] Figure 1 is a structural schematic view of the utility model;
[0015] Figure 2 isFigure 1 A part of the local enlarged view of the middle;
[0016] In the figure:
[0017] 1, contact line dropper clamp; 2, hard point buffer device; 201, cavity; 202, contraction part; 3, damping device; 301, shell; 302, piston rod; 4, sleeve; 401, mounting part; 5, adapter; 6, connecting rod; 7, load cable dropper wire; 8, load cable support connecting wire clamp; 9, support rod; 10, electrical connection jumper; H: cavity height; h: buffer stroke. DETAILED DESCRIPTION
[0018] The utility model will be explained in further detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model.
[0019] Example one:
[0020] As shown in Figure 1 and Figure 2 The utility model discloses a damping dropper device, which comprises a contact line dropper clamp 1, a load cable dropper clamp 7 and a damping device 3 between the two.
[0021] The contact line dropper clamp 1 and the load cable dropper clamp 7 are both made of CuNi2Si forging forming.
[0022] The damping device 3 comprises a shell 301 and a piston rod 302 slidingly installed inside the shell 301, and the damping device 3 can reduce the amplitude and frequency of vibration by damping inhibition. A rigid connecting rod 6 is arranged between the upper end of the shell 301 and the load cable dropper clamp 7, and the connecting rod 6 is made of CuNi2Si drawn bar stock. The dropper structure composed of the damping device 3 and the rigid connecting rod 6 has higher structural strength compared with the traditional dropper wire material, thereby increasing the service life. Moreover, the damping device 3 can fully absorb the airflow or pantograph-charging-induced pantograph-catenary vibration when the train passes, thereby playing a buffering role. A hard point buffer device 2 is arranged between the lower end of the piston rod 302 and the contact line dropper clamp 1.
[0023] The hard point buffer device 2 is made of 6061 hard aluminum alloy, has a cavity 201 inside, the height of the cavity is H, the lower end of the piston rod 302 is inserted into the cavity 201 and can slide in the cavity 201, the buffer stroke is h; the lower end of the hard point buffer device 2 is fixed with the contact line suspension chord clamp 1 by high-strength stainless steel bolts, the upper end is inwardly contracted to form a contraction part 202 for preventing the piston rod 302 from being separated, the lower end of the piston rod 302 is provided with a protruding part, the contraction part 202 abuts against the protruding part at the lower end of the piston rod 302 to realize the connection between the hard point buffer device 2 and the piston rod 302, and a gap is left between the outer peripheral wall of the piston rod 302 and the inner peripheral wall of the hard point buffer device 2, when the two relative move, the two are in a separated state so that no interaction force is generated between the two, preventing extrusion when the pantograph is lifted.
[0024] The contact line suspension chord clamp 1 is provided with a load cable support connecting clamp 8 on each side, which is made of CuNi2Si forging, and each load cable support connecting clamp 8 is connected with a support rod 9 which is made of CuNi2Si drawn bar material; the two ends of the support rod 9 are provided with single ears which are connected with the load cable support connecting clamp 8 and the sleeve 4, respectively, and the two support rods 9 are symmetrically distributed on the two sides of the connecting rod 6, thereby forming a stable triangular structure, so that the force of the contact line is applied to the load cable to the greatest extent, and then the force is transmitted to the damping device 3, avoiding the synchronous vibration of the single suspension chord structure causing the damping device 3 unable to work.
[0025] The sleeve 4 is fixed on the shell 301, and the sleeve 4 is made of 304 stainless steel hollow pipe and 304 stainless steel plate laser cutting shaped wing plate, and two threaded holes are processed on the front surface to be connected with the damping device 3 in the form of jack screw, and two mounting parts 401 are symmetrically arranged on the sleeve 4, and the two support rods 9 are connected with the shell 301 through the two mounting parts 401.
[0026] The damping device 3 and the connecting rod 6 are provided with an adapter 5 made of CuNi2Si bar material, and the adapter 5 and the contact line suspension chord clamp 1 are connected by a bolt with an electrical connection jumper 10 made of TRJ1-10 type soft copper stranded wire, which ensures that the two ends of the connection have the same potential voltage.
[0027] Working principle:
[0028] When the contact line goes up, the contact line dropper clamp 1 drives the hard point buffer device 2 to go up, the relative movement between the hard point buffer device 2 and the piston rod 302 is generated, the piston rod 302 can abut against the lower end of the hard point buffer device 2 after the empty stroke distance, the damping device 3 generates the inhibitory effect at this time, the immediate triggering of the damping device 3 in the contact line up process is avoided, the synchronous generation of the starting hard point of the damping device 3 and the contact line lifting starting force is prevented, and the extrusion at the instant of the pantograph lifting is prevented.
[0029] The above is the ideal embodiment according to the utility model, and the related staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.
Claims
1. A damped fiddleback device, characterized by: The utility model provides a contact line suspension wire clamp (1), a bearing cable suspension wire clamp (7) and a damping device (3) between the two, the damping device (3) includes a shell (301) and a piston rod (302) slidingly installed inside the shell (301), a connecting rod (6) is arranged between the upper end of the shell (301) and the bearing cable suspension wire clamp (7), a hard point buffer device (2) is arranged between the lower end of the piston rod (302) and the contact line suspension wire clamp (1), the hard point buffer device (2) has a cavity (201) inside, the lower end of the piston rod (302) is inserted into the cavity (201) and can slide in the cavity (201).
2. The damped fiddleback device of claim 1, wherein: The contact line suspension wire clamp (1) is respectively provided with a bearing cable support connecting wire clamp (8) on both sides, and a support rod (9) is connected between the damping device (3) and each bearing cable support connecting wire clamp (8).
3. The damped fiddleback device of claim 1, wherein: The lower end of the hard point buffer device (2) is fixed to the contact line suspension wire clamp (1) by bolts, and the upper end is inwardly contracted to form a contraction part (202) for preventing the piston rod (302) from being separated.
4. The damped fiddleback device of claim 2, wherein: A sleeve (4) is fixedly sleeved on the shell (301), two mounting parts (401) are symmetrically arranged on the sleeve (4), and the two support rods (9) are connected with the shell (301) through the two mounting parts (401) respectively.
5. The damped fiddleback apparatus of claim 1, wherein: A connector (5) is arranged between the damping device (3) and the connecting rod (6), and an electrical connection jumper (10) is connected between the connector (5) and the contact line suspension wire clamp (1).