Contact net device and pantograph net test equipment

Abstract

The invention discloses a contact net device and pantograph net test equipment, and relates to the technical field of rail transit, and the contact net device comprises a power transmission mechanism, a contact net driving wheel, a contact net body, a carrier cable driving wheel, a carrier cable body and a plurality of elastic droppers. The power transmission mechanism comprises a transmission shaft assembly, the contact net driving wheel is installed on the power transmission mechanism, the contact net body is installed on the contact net driving wheel and used for keeping dynamic contact with a pantograph, the carrier cable driving wheel is movably embedded in the transmission shaft assembly, and the carrier cable body is installed on the carrier cable driving wheel and used for keeping dynamic contact with the pantograph. The plurality of elastic droppers are used for synchronously running with the contact network body under the driving action of the carrier cable driving wheel, and the plurality of elastic droppers are configured to adjust the tension of the contact network body after the carrier cable driving wheel is subjected to position adjustment relative to the transmission shaft assembly. According to the overhead line system device, the contact behavior of the pantograph and the overhead line system can be simulated more truly, and the accuracy of performance test and evaluation of the pantograph and the overhead line system of the high-speed train is improved.

Description

Technical Field

[0001] The present application relates to the field of rail transit technology, and in particular to a contact network device and a pantograph-catenary testing equipment. Background Art

[0002] At present, high-speed trains mainly obtain electricity through pantographs connected to the top contact network, thereby driving the normal operation of the train.

[0003] In the process of obtaining electric energy, the smoothness of the load current passing through the contact surface of the contact wire and the pantograph is called the current collection quality. The current collection quality of the pantograph directly affects the reliability and safety of train operation. Therefore, it is necessary to evaluate the performance of the high-speed pantograph and catenary in an experimental environment to ensure that the performance of the pantograph and catenary meets the service requirements. The existing test equipment mainly uses a rotating disk device to drive the contact network to make dynamic contact with the pantograph, thereby completing the pantograph-catenary performance test. However, the current test equipment has a complex structural design, occupies a large space, and cannot simulate the contact behavior of the pantograph and the contact network more realistically, which affects the pantograph-catenary performance test and reduces the accuracy of the high-speed train pantograph-catenary performance test evaluation. Summary of the invention

[0004] The purpose of this application is to provide a contact network device and a pantograph-catenary test equipment, which can more realistically simulate the contact behavior between the pantograph and the contact network, and improve the accuracy of the performance test and evaluation of the pantograph and catenary of high-speed trains.

[0005] To achieve the above objectives, the present application provides a contact network device, comprising:

[0006] A power transmission mechanism, the power transmission mechanism comprising a transmission shaft assembly;

[0007] The contact network driving wheel is installed on the power transmission mechanism and is used to rotate under the transmission action of the power transmission mechanism;

[0008] The contact network body is installed on the contact network driving wheel and is used to maintain dynamic contact with the pantograph under the driving action of the contact network driving wheel;

[0009] The load-bearing cable driving wheel is movably embedded in the transmission shaft assembly and is used to rotate with the transmission shaft assembly;

[0010] The catenary cable body is installed on the catenary cable driving wheel and is used to operate synchronously with the catenary cable body under the driving action of the catenary cable driving wheel;

[0011] A plurality of elastic suspension strings are connected between the catenary cable body and the contact network body. The elastic suspension strings are configured to adjust the tension of the contact network body after the position of the catenary cable driving wheel is adjusted relative to the transmission shaft assembly.

[0012] In some embodiments, the power transmission mechanism further comprises a planetary gear transmission assembly, the planetary gear transmission assembly comprising a transmission shaft assembly;

[0013] The planetary gear transmission assembly also includes a planet carrier, a sun gear, an inner gear ring and a plurality of planetary gears. The transmission shaft assembly is fixedly connected to the sun gear. One side of each planetary gear is meshed with the sun gear and the other side is meshed with the inner gear ring. Each planetary gear is rotatably mounted on the planet carrier, and the planet carrier is used to support each planetary gear.

[0014] In some embodiments, the power transmission mechanism further includes a driving motor and a reduction box assembly, the transmission shaft assembly is connected to the output end of the reduction box assembly, and the input end of the reduction box assembly is connected to the output end of the driving motor.

[0015] In some embodiments, the power transmission mechanism further includes a controller, which is communicatively connected to the drive motor, and the controller is used to control the drive motor to drive the contact network body to operate at a specified speed.

[0016] In some embodiments, the transmission shaft assembly is provided with a radially protruding mounting strip, the mounting strip is provided with a plurality of first mounting holes spaced apart along the axial direction of the transmission shaft assembly, a pair of mounting plates is provided on the load-bearing cable driving wheel, a space for accommodating the mounting strip is provided between the pair of mounting plates, a second mounting hole is provided on any mounting plate, and the second mounting hole is aligned with the corresponding first mounting hole and connected through fasteners to fix the load-bearing cable driving wheel on the transmission shaft assembly.

[0017] In some embodiments, both the catenary driving wheel and the catenary driving wheel are provided with an annular groove;

[0018] The contact network body is installed in the annular groove of the contact network driving wheel, and the contact network body is in contact with the inner wall of the annular groove of the contact network driving wheel;

[0019] The main body of the Messenger cable is installed in the annular groove of the Messenger cable driving wheel, and the main body of the Messenger cable is in contact with the inner wall of the annular groove of the Messenger cable driving wheel.

[0020] In some embodiments, the catenary cable body and the contact network body are both ring-shaped, and there are two catenary cable bodies, which are symmetrically arranged on both sides of the plane where the contact network body is located.

[0021] The present application also provides a pantograph-catenary test equipment, comprising a pantograph and any one of the above-mentioned contact network devices, wherein the pantograph is located below a contact network body of the contact network device and is in dynamic contact with the contact network body.

[0022] In some embodiments, the pantograph-catenary testing equipment further includes a posture adjustment and external excitation device, which includes a platform and a plurality of actuators disposed under the platform. The bottom of the pantograph is connected to the platform, and the actuator is used to rotate the pantograph at a certain angle to achieve the adjustment of the contact posture between the pantograph and the contact network body.

[0023] In some embodiments, the pantograph-catenary test equipment further comprises a test performance data detection component, which is disposed on the pantograph and is used to detect test performance data when the pantograph and the contact network body are in dynamic contact.

[0024] With respect to the above background technology, the contact network device provided in the embodiment of the present application includes a power transmission mechanism, a contact network driving wheel, a contact network body, a catenary driving wheel, a catenary body and a plurality of elastic suspension strings. The power transmission mechanism includes a transmission shaft assembly, the contact network driving wheel is mounted on the power transmission mechanism, the contact network driving wheel is used to rotate under the transmission action of the power transmission mechanism, the contact network body is mounted on the contact network driving wheel, the contact network body is used to maintain dynamic contact with the pantograph under the driving action of the contact network driving wheel, the catenary driving wheel is movably embedded on the transmission shaft assembly, the catenary driving wheel is used to rotate with the transmission shaft assembly, the catenary body is mounted on the catenary driving wheel, the catenary body is used to operate synchronously with the contact network body under the driving action of the catenary driving wheel, and a plurality of elastic suspension strings are connected between the catenary body and the contact network body, and the elastic suspension strings are configured to adjust the tension of the contact network body after the catenary driving wheel is adjusted relative to the transmission shaft assembly.

[0025] In this way, under the transmission action of the power transmission mechanism, the contact network driving wheel and the supporting cable driving wheel rotate coaxially, so that the contact network body and the supporting cable body operate synchronously, and multiple elastic suspension strings are responsible for connecting the supporting cable body and the contact network body. The elastic suspension strings maintain a certain elasticity. After the supporting cable driving wheel is adjusted in position relative to the transmission shaft assembly, the stiffness of the elastic suspension strings is adjusted, which can affect the tension of the contact network body, thereby achieving the purpose of adjusting the tension of the contact network body.

[0026] The contact network device configured in this way can realize the tension adjustment of various contact network bodies, so as to meet the requirements of dynamic adjustment of the contact state between the pantograph and the catenary under the tension conditions of various contact network bodies. The above contact network device is applied to the catenary test equipment, and the simulation of contact network bodies with different tensions can be achieved through simple adjustment, so that the dynamic contact behavior of the pantograph and the contact network can be simulated more realistically, meeting the test requirements of the pantograph and catenary characteristics in the laboratory environment, and reducing the risks in the actual use process. In addition, the contact network device has a compact structure and occupies a small space. It can realize the test simulation of a wide range of operating speeds and assist in evaluating the performance of the pantograph and catenary of high-speed trains. Therefore, the contact network device and the catenary test equipment with the contact network device have broad application prospects in railway transportation and related fields, and can make positive contributions to the development of the industry and the improvement of service quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the structure of the contact network device in the embodiment of the present application;

[0029] Figure 2 for Figure 1 A schematic diagram of the structure of the power transmission mechanism in the overhead contact network device shown;

[0030] Figure 3 This is a structural schematic diagram of the pantograph-net testing equipment in the embodiment of the present application;

[0031] Figure 4 for Figure 3 The schematic diagram of the assembly of the pantograph, posture adjustment and external excitation device in the pantograph-catenary test equipment is shown.

[0032] in:

[0033] 10- overhead contact network device;

[0034] 11-power transmission mechanism, 111-drive motor, 112-reduction box assembly, 113-planetary gear transmission assembly, 1131-transmission shaft assembly, 11311-mounting bar, 11312-first mounting hole, 1132-planet carrier, 1133-sun gear, 1134-inner ring gear, 1135-planetary gear;

[0035] 12-contact network driving wheel, 121-annular groove;

[0036] 13- contact network body;

[0037] 14- load-bearing cable driving wheel, 141- mounting plate, 142- second mounting hole;

[0038] 15-The body of the load-bearing cable;

[0039] 16-Elastic suspension string;

[0040] 20- pantograph, 21- bow head;

[0041] 30-posture adjustment and external excitation device, 31-platform, 32-actuator. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0044] It should be noted that the directional words such as "upper end, lower end, left side, right side" described below are all defined based on the drawings in the specification.

[0045] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the structure of the contact network device in the embodiment of the present application; Figure 2 for Figure 1 A schematic diagram of the structure of the power transmission mechanism in the overhead contact network device shown; Figure 3 This is a structural schematic diagram of the pantograph-net testing equipment in the embodiment of the present application; Figure 4 for Figure 3 The schematic diagram of the assembly of the pantograph, posture adjustment and external excitation device in the pantograph-catenary test equipment is shown.

[0046] The contact network device 10 provided in the embodiment of the present application includes a power transmission mechanism 11, a contact network driving wheel 12, a contact network body 13, a load-bearing cable driving wheel 14, a load-bearing cable body 15 and a plurality of elastic suspension strings 16.

[0047] Among them, the power transmission mechanism 11 includes a transmission shaft assembly 1131, a contact network driving wheel 12 is installed on the power transmission mechanism 11, and the contact network driving wheel 12 is used to rotate under the transmission action of the power transmission mechanism 11, the contact network body 13 is installed on the contact network driving wheel 12, and the contact network body 13 is used to maintain dynamic contact with the pantograph 20 under the driving action of the contact network driving wheel 12, the bearing cable driving wheel 14 is movably embedded in the transmission shaft assembly 1131, and the bearing cable driving wheel 14 is used to rotate with the transmission shaft assembly 1131, the bearing cable body 15 is installed on the bearing cable driving wheel 14, and the bearing cable body 15 is used to operate synchronously with the contact network body 13 under the driving action of the bearing cable driving wheel 14, and a plurality of elastic suspension strings 16 are connected between the bearing cable body 15 and the contact network body 13, and the elastic suspension strings 16 are configured to adjust the tension of the contact network body 13 after the bearing cable driving wheel 14 is adjusted relative to the transmission shaft assembly 1131.

[0048] In this way, under the transmission action of the power transmission mechanism 11, the contact network driving wheel 12 and the bearing cable driving wheel 14 rotate coaxially, so that the contact network body 13 and the bearing cable body 15 operate synchronously, and multiple elastic suspension strings 16 are responsible for connecting the bearing cable body 15 and the contact network body 13. The elastic suspension strings 16 maintain a certain elasticity. After the bearing cable driving wheel 14 is adjusted in position relative to the transmission shaft assembly 1131, the stiffness of the elastic suspension strings 16 is adjusted, which can affect the tension of the contact network body 13, thereby achieving the purpose of adjusting the tension of the contact network body 13.

[0049] The contact network device 10 configured in this way can realize the tension adjustment of various contact network bodies 13, thereby satisfying the dynamic adjustment of the bow-net contact state under the tension conditions of various contact network bodies 13. The above-mentioned contact network device 10 is applied to the bow-net test equipment, and the simulation of contact network bodies 13 with different tensions can be realized through simple adjustment, so as to more realistically simulate the dynamic contact behavior of the pantograph 20 and the contact network, meet the test requirements of the pantograph 20 bow-net characteristics in the laboratory environment, and reduce the risks in the actual use process. In addition, the contact network device 10 has a compact structure and occupies a small space, and can realize the test simulation of a wide range of operating speeds, which can assist in the evaluation of the pantograph 20 bow-net performance of high-speed trains.

[0050] Therefore, the overhead contact network device 10 and the bow-net testing equipment having the overhead contact network device 10 have broad application prospects in railway transportation and related fields, and can make positive contributions to the development of the industry and the improvement of service quality.

[0051] In some embodiments, the power transmission mechanism 11 further includes a planetary gear transmission assembly 113, which is used to drive the contact network drive wheel 12 and the carrier cable drive wheel 14. The planetary gear transmission assembly 113 includes a transmission shaft assembly 1131, and further, the planetary gear transmission assembly 113 also includes a planet carrier 1132, a sun gear 1133, an inner ring gear 1134 and a plurality of planetary gears 1135.

[0052] Taking the three planetary gears 1135 as an example, the transmission shaft assembly 1131 is fixedly connected to the sun gear 1133, the sun gear 1133 is located in the middle of the three planetary gears 1135, one side of the three planetary gears 1135 is meshed with the sun gear 1133, and the other side of the three planetary gears 1135 is meshed with the inner gear ring 1134, and the three planetary gears 1135 are rotatably mounted on the planet carrier 1132, and the planet carrier 1132 is used to support the rotation of the three planetary gears 1135. The contact network drive wheel 12 is fixedly mounted on the inner gear ring 1134, and the surface of the inner gear ring 1134 is provided with a fixing hole, and the contact network drive wheel 12 is fixedly connected to the inner gear ring 1134 through the fixing hole.

[0053] Specifically, the three planetary gears 1135 are rotatably connected to the planetary carrier 1132 through bearings, and the planetary carrier 1132 serves as a fixed bracket to support the stability of the rotation of the three planetary gears 1135. In this way, the transmission shaft assembly 1131 transmits power to the sun gear 1133, the sun gear 1133 drives the three planetary gears 1135 to rotate, and the three planetary gears 1135 drive the inner gear ring 1134 to rotate, thereby driving the contact network drive wheel 12 and the carrier cable drive wheel 14 to operate.

[0054] It should be noted that the outer diameter ratio of the catenary driving wheel 14 and the contact network driving wheel 12 is equal to the transmission ratio of the sun gear 1133 and the planetary gear 1135. This arrangement can ensure that the linear speeds of the contact network body 13 and the catenary cable body 15 remain consistent, so that the stability and reliability of the operation of the entire device can be guaranteed.

[0055] Compared with the existing transmission mechanism, the planetary gear transmission assembly 113 provided in this embodiment is not only compact in structure, small in size, and light in weight, but also has smooth movement, strong resistance to impact and vibration, and high transmission efficiency, thereby ensuring the stability and reliability of the operation of the contact network device 10 during the test.

[0056] It should be noted that the number of the above-mentioned planetary gear transmission assemblies 113 is two, with one planetary gear transmission assembly 113 arranged at the front and rear respectively. The catenary cable body 15 and the contact network body 13 are both annular. Accordingly, the number of the catenary cable bodies 15 is two, and the two catenary cable bodies 15 are symmetrically arranged on both sides of the plane where the contact network body 13 is located.

[0057] A plurality of elastic suspension strings 16 are arranged between any load-bearing cable body 15 and the contact network body 13. The elastic suspension strings 16 can be specifically tension springs. The elastic suspension strings 16 on both sides provide elastic tension to the contact network body 13 from both sides, so that the contact network body 13 is kept under a certain tension.

[0058] In addition, compared with the traditional horizontal contact network device 10, the present application adopts the above-mentioned vertical contact network device 10, which not only simplifies the structure, but also reduces the occupied space, which is conducive to the application of the above-mentioned contact network device 10 in the laboratory to complete the bow-net performance test.

[0059] In some embodiments, the power transmission mechanism 11 further includes a driving motor 111 and a reduction box assembly 112 , the transmission shaft assembly 1131 is connected to the output end of the reduction box assembly 112 , and the input end of the reduction box assembly 112 is connected to the output end of the driving motor 111 .

[0060] In this way, by controlling the driving motor 111 to run at a specified speed, the reduction box assembly 112 can transmit power to the planetary gear transmission assembly 113, thereby realizing the operation of the contact network driving wheel 12 and the load-bearing cable driving wheel 14.

[0061] In addition, the power transmission mechanism 11 also includes a controller, which is communicatively connected with the drive motor 111 , and is used to control the drive motor 111 to drive the contact network body 13 to operate at a specified speed.

[0062] Through the above-mentioned setting, the power transmission mechanism 11 can provide operating power for the contact network device 10, and can simulate different operating speeds of high-speed trains by adjusting the rotation speed of the drive motor 111, especially can simulate the high-speed running state of the current high-speed train.

[0063] In order to facilitate the adjustment of the position of the load-bearing cable driving wheel 14 on the transmission shaft assembly 1131, the transmission shaft assembly 1131 is provided with a radially protruding mounting strip 11311, the mounting strip 11311 is arranged on the outer side of the sun gear 1133, and the mounting strip 11311 is provided with a plurality of first mounting holes 11312 spaced apart along the axial direction of the transmission shaft assembly 1131; correspondingly, the load-bearing cable driving wheel 14 is provided with a pair of mounting plates 141, and there is a space for accommodating the mounting strip 11311 between the pair of mounting plates 141, and a second mounting hole 142 is provided on any mounting plate 141.

[0064] In this way, after the load-bearing cable driving wheel 14 is mounted on the transmission shaft assembly 1131, the mounting strip 11311 is embedded between the two mounting plates 141. Furthermore, after the two second mounting holes 142 are aligned with the corresponding first mounting holes 11312, they are connected by fasteners to fix the load-bearing cable driving wheel 14 on the transmission shaft assembly 1131.

[0065] Of course, according to actual needs, the number of the above-mentioned mounting strips 11311 can be set to two, and the two mounting strips 11311 differ by 180 degrees in the circumferential direction. Correspondingly, two pairs of mounting plates 141 are provided, and any pair of mounting plates 141 is adapted to the corresponding mounting strips 11311.

[0066] With such arrangement, during the test, the stiffness of the elastic suspension string 16 between the contact network body 13 and the contact network body 15 can be adjusted by adjusting the fixed position of the load-bearing cable driving wheel 14 on the transmission shaft assembly 1131, thereby adjusting the tension of the contact network body 13.

[0067] For example, when the position of the catenary driving wheel 14 is adjusted outward, the stiffness of the elastic suspension string 16 between the catenary body 13 and the catenary body 15 increases, so that the tension of the catenary body 13 increases, making the catenary body 13 almost straight.

[0068] In order to facilitate the installation of the contact network body 13 and the supporting cable body 15, the outer peripheral edge of the contact network driving wheel 12 and the outer peripheral edge of the supporting cable driving wheel 14 are both provided with an annular groove 121. Among them, the contact network body 13 is installed in the annular groove 121 of the contact network driving wheel 12, and the contact network body 13 is in contact with the inner wall of the annular groove 121 of the contact network driving wheel 12; the supporting cable body 15 is installed in the annular groove 121 of the supporting cable driving wheel 14, and the supporting cable body 15 is in contact with the inner wall of the annular groove 121 of the supporting cable driving wheel 14.

[0069] Taking into account that the vibration of the pantograph 20 and the contact network body 13 during train operation is another important factor affecting the current collection effect of the pantograph and the contact network, the embodiment of the present application can further design a simulated pantograph-catenary sliding contact state from the perspective of vibration simulation, so as to make a more realistic and accurate analysis of the current collection situation of the pantograph and the contact network.

[0070] For example, a vibration device connected to the contact network body 13 may be provided, the vibration device is used to vibrate according to a corresponding vibration control curve, and the vibration device is controlled by the control device. The vibration control curve is a three-dimensional vibration curve of the contact network body 13 simulating a train at a specified running speed.

[0071] A pantograph-catenary test device provided in the present application includes a pantograph 20 and an overhead contact network device 10 described in the above embodiment. The pantograph 20 is located below an overhead contact network body 13 of the overhead contact network device 10 , and an upper bow head portion 21 of the pantograph 20 is in dynamic contact with the overhead contact network body 13 .

[0072] In some embodiments, the pantograph-catenary testing equipment further includes a posture adjustment and external excitation device 30, which includes a platform 31 and a plurality of actuators 32 disposed under the platform 31. The bottom of the pantograph 20 is connected to the platform 31, and the actuator 32 is used to rotate the pantograph 20 at a certain angle to achieve the adjustment of the contact posture between the pantograph 20 and the contact network body 13.

[0073] For example, two groups of actuators 32 may be provided at the bottom of the platform 31. When one group of actuators 32 is in operation and the other group of actuators 32 is inoperable, the contact posture between the pantograph 20 and the contact network body 13 may be adjusted.

[0074] During operation, the posture adjustment and external excitation device 30 can make the pantograph 20 rotate at a certain angle, thereby adjusting the contact posture between the pantograph 20 and the contact network body 13, and can apply external excitation to the pantograph 20 through multiple sets of actuators 32, thereby more realistically reflecting the pantograph 20 bow-net contact behavior.

[0075] In some embodiments, the pantograph-catenary test equipment further includes a test performance data detection component, which is disposed on the pantograph 20 and is used to detect test performance data when the pantograph 20 and the contact network body 13 are in dynamic contact.

[0076] In addition, the bow-net test equipment also includes a data acquisition control system, which is communicatively connected to the test performance data detection component.

[0077] According to actual needs, the test performance data detection components include temperature sensors, laser thickness sensors, arc sensors, current and voltage sensors and other sensors, the sensors are connected to the data acquisition control system, and the data acquisition control system is connected to the display module for display. The temperature sensor, laser thickness sensor, arc sensor, current and voltage sensor and other sensors are used to measure the test data such as the contact force, temperature, arc between the pantograph 20 and the contact network body 13, and the wear of the pantograph 20 and the contact network body 13, and the test data are transmitted to the data acquisition control system, and finally the processed test data are displayed for observation by the on-site staff.

[0078] In summary, the contact network device 10 and the pantograph-catenary test equipment having the contact network device 10 provided in the embodiment of the present application can realize the test under various operating conditions, various contact network body 13 tensions, and various pantograph-catenary contact states during the test process. Specifically, the different operating speeds of the high-speed train can be simulated by adjusting the rotation speed of the driving motor 111, and the tension of the contact network body 13 can be adjusted by adjusting the installation position of the load-bearing cable driving wheel 14. The surface of the contact network body 13 is in dynamic contact with the bow head part 21 of the high-speed pantograph 20, causing the bow head part 21 of the pantograph 20 to wear. The contact posture of the contact network body 13 and the pantograph 20 can be adjusted by the posture adjustment and external excitation device 30, and the external excitation can be applied to the pantograph 20 through the actuator 32, so as to more realistically reflect the pantograph 20 pantograph-catenary contact behavior.

[0079] The above-mentioned configuration method can be used to test the pantograph-catenary characteristics of the pantograph 20 in a laboratory environment, thereby reducing the risks during actual use.

[0080] The contact network device 10 and the pantograph-catenary test equipment with the contact network device 10 provided in the embodiment of the present application have a compact structure, occupy a small space, can realize the test simulation of a wide range of operating speeds, can realize the simulation of different contact network tensions and different postures of the pantograph-catenary contact states through simple adjustment, and can assist in evaluating the pantograph-catenary performance of the high-speed train pantograph 20. Therefore, the equipment has broad application prospects in railway transportation and related fields, and makes positive contributions to the development of the industry and the improvement of service quality.

[0081] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0082] The above is a detailed introduction to the contact network device and the catenary test equipment provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the scheme of the present application and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the present application.

Claims

1. A contact network device, characterized in that: include: A power transmission mechanism, the power transmission mechanism comprising a transmission shaft assembly; A contact network driving wheel, mounted on the power transmission mechanism, and configured to rotate under the transmission action of the power transmission mechanism; A contact network body, mounted on the contact network driving wheel, and used to maintain dynamic contact with the pantograph under the driving action of the contact network driving wheel; A load-bearing cable driving wheel is movably embedded on the transmission shaft assembly and is used to rotate with the transmission shaft assembly; A catenary cable body, mounted on the catenary cable driving wheel, and configured to operate synchronously with the catenary cable body under the driving action of the catenary cable driving wheel; A plurality of elastic suspension strings are connected between the catenary cable body and the contact network body, and the elastic suspension strings are configured to adjust the tension of the contact network body after the position of the catenary cable driving wheel is adjusted relative to the transmission shaft assembly.

2. The contact network device according to claim 1, characterized in that: The power transmission mechanism further includes a planetary gear transmission assembly, and the planetary gear transmission assembly includes the transmission shaft assembly; The planetary gear transmission assembly also includes a planet carrier, a sun gear, an inner gear ring and a plurality of planetary gears. The transmission shaft assembly is fixedly connected to the sun gear. One side of each planetary gear is meshed with the sun gear and the other side is meshed with the inner gear ring. Each planetary gear is rotatably mounted on the planet carrier, and the planet carrier is used to support each planetary gear.

3. The contact network device according to claim 2, characterized in that: The power transmission mechanism also includes a driving motor and a reduction box assembly. The transmission shaft assembly is connected to the output end of the reduction box assembly, and the input end of the reduction box assembly is connected to the output end of the driving motor.

4. The contact network device according to claim 3, characterized in that: The power transmission mechanism also includes a controller, which is communicatively connected with the drive motor, and is used to control the drive motor to drive the contact network body to operate at a specified speed.

5. The contact network device according to claim 1, characterized in that: The transmission shaft assembly is provided with a radially protruding mounting strip, the mounting strip is provided with a plurality of first mounting holes spaced apart along the axial direction of the transmission shaft assembly, the load-bearing cable driving wheel is provided with a pair of mounting plates, a space for accommodating the mounting strip is provided between the pair of mounting plates, a second mounting hole is provided on any of the mounting plates, and the second mounting hole is aligned with the corresponding first mounting hole and connected via a fastener, so that the load-bearing cable driving wheel is fixed to the transmission shaft assembly.

6. The contact network device according to claim 1, characterized in that: The contact network driving wheel and the catenary cable driving wheel are both provided with an annular groove; The contact network body is installed in the annular groove of the contact network driving wheel, and the contact network body is in contact with the inner wall of the annular groove of the contact network driving wheel; The Messenger cable body is installed in the annular groove of the Messenger cable driving wheel, and the Messenger cable body is in contact with the inner wall of the annular groove of the Messenger cable driving wheel.

7. The contact network device according to claim 1, characterized in that: The catenary cable body and the contact network body are both ring-shaped, and there are two catenary cable bodies, which are symmetrically arranged on both sides of the plane where the contact network body is located.

8. A pantograph-catwalk test device, characterized in that: It comprises a pantograph and also comprises a contact network device as described in any one of claims 1 to 7, wherein the pantograph is located below a contact network body of the contact network device and is in dynamic contact with the contact network body.

9. The pantograph-catenary testing device according to claim 8, characterized in that: The pantograph-catenary testing equipment also includes a posture adjustment and external excitation device, which includes a platform and a plurality of actuators arranged under the platform. The bottom of the pantograph is connected to the platform. The actuator is used to rotate the pantograph at a certain angle to achieve the adjustment of the contact posture between the pantograph and the contact network body.

10. The pantograph-catenary testing device according to claim 8, characterized in that: The pantograph-catenary test equipment further comprises a test performance data detection component, which is arranged on the pantograph and is used to detect test performance data when the pantograph and the contact network body are in dynamic contact.

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