Maintenance test bench for two-position change-over switch of direct-current electric locomotive
By designing a test bench for the maintenance of two-position changeover switches in DC electric locomotives, the problem of low maintenance efficiency was solved, and efficient and accurate maintenance and testing results were achieved, ensuring the stability and safety of the locomotive's electrical system.
Patent Information
- Application Number
- CN202520022728.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-06
AI Technical Summary
The lack of specialized equipment for the maintenance of two-position changeover switches on DC electric locomotives leads to low maintenance efficiency and makes it difficult to guarantee maintenance quality and test results.
A maintenance test bench was designed, comprising a support, a worktable, a rotating disk device, and air ducts. It provides precise multi-angle inspection and maintenance operations. The rotating disk device enables the smooth rotation and accurate positioning of the inspection plate, and the air ducts are used to remove dust and debris, ensuring the quality of maintenance.
It significantly improved maintenance efficiency and quality, ensured the accuracy of test results, and enhanced the flexibility and safety of the assembly and debugging process.
Smart Images
Figure CN223770345U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to railway locomotive technical field, concretely relates to a DC electric locomotive two position change switch overhauling test bench. BACKGROUND
[0002] As an important part of modern railway transportation, the stability and reliability of the electrical system of the DC electric locomotive are directly related to the operation efficiency and safety performance of the locomotive. Among the numerous electrical accessories of the DC electric locomotive, the two-position change switch plays a crucial role. It is not only the key component for realizing the switching of the excitation mode of the locomotive traction motor and controlling the direction of the motor, but also directly related to whether the locomotive can flexibly realize the basic functions such as forward, backward, traction and electric braking. This precise and multifunctional electrical component, through the ingenious cooperation of its internal rotating drum mechanism and moving and static contacts, accurately adjusts the circuit connection state according to the locomotive operation requirements, ensuring efficient and accurate power transmission. However, after long-term operation of the locomotive, especially after experiencing complex and variable operating environments and high-intensity use pressure, the internal parts of the two-position change switch are inevitably subject to wear, looseness and even damage, which not only affects the normal operation of the locomotive, but also may cause electrical system failure and endanger train safety in severe cases. Therefore, regular disassembly and repair of the two-position change switch, timely replacement of aged or damaged parts, and adjustment of the mechanism to the best working state are indispensable for the healthy operation of the electrical system of the locomotive.
[0003] In actual repair work, faced with the highly integrated and complex two-position change switch of the DC electric locomotive, repair personnel face many challenges. First of all, the disassembly and reassembly process of the change switch requires high precision and professionalism, and any minor assembly error may affect the reliability of the contact, and thus affect the performance of the entire electrical system. In addition, since the change switch undertakes the key task in high-voltage and high-current environment in the locomotive, the detection and verification of its insulation performance, arc resistance and mechanical strength are also the top priority in the repair process. However, the traditional repair environment often lacks professional repair test devices for such complex electrical accessories, and repair personnel have to rely on ordinary workbenches for operation, which not only greatly limits the efficiency and quality of repair work, but also increases the operation difficulty and safety risk. Especially when conducting action test of the change switch, due to the lack of special air source connection device, it is difficult to accurately simulate the working conditions in the actual operation of the locomotive, resulting in a big discount in the accuracy of the test results and making it difficult to fully evaluate the performance status of the repaired change switch. SUMMARY
[0004] The lack of dedicated maintenance and testing equipment in the existing technology for the two-position changeover switch of DC electric locomotives leads to low maintenance efficiency and difficulty in ensuring maintenance quality and the accuracy of test results. This invention provides a maintenance and testing bench for the two-position changeover switch of DC electric locomotives, which can be used for the assembly and debugging of the switch, improving maintenance efficiency and ensuring maintenance quality and the accuracy of test results.
[0005] To achieve the above objectives, the present invention provides the following technical solution.
[0006] This utility model provides a maintenance and testing bench for a two-position changeover switch of a DC electric locomotive, including a support, a worktable, a rotating disk device, and air ducts; the worktable is disposed above the support; the rotating disk device is mounted on the worktable; the air ducts are disposed in the side area of the support; the rotating disk device includes a maintenance plate, a rotating shaft, and a rotating shaft sleeve assembly; the maintenance plate is placed in the worktable, the bottom of the maintenance plate is connected to one end of the rotating shaft, and the other end of the rotating shaft is equipped with the rotating shaft sleeve assembly.
[0007] Optionally, the inspection plate includes a first inspection plate, a second inspection plate, a third inspection plate, and a fourth inspection plate; the first inspection plate, the second inspection plate, the third inspection plate, and the fourth inspection plate are installed in the circular holes opened on the workbench surface.
[0008] Optionally, the first inspection plate, the second inspection plate, the third inspection plate, and the fourth inspection plate are arranged at equal intervals.
[0009] Optionally, the first inspection plate, the second inspection plate, the third inspection plate, and the fourth inspection plate are located on the same central axis.
[0010] Optionally, the bracket is further provided with a support plate; the bottom of the rotating shaft sleeve assembly is mounted on the support plate.
[0011] Optionally, the pivot sleeve assembly includes a pivot sleeve, a seat, a positioning rod, a force-applying cover, and a handle; the top of the pivot sleeve is connected to the pivot shaft, and the side of the pivot sleeve is connected to the seat; the seat is connected to one end of the positioning rod, and the force-applying cover is installed on the outside of the other end of the positioning rod; the force-applying cover is connected to the handle.
[0012] Optionally, the rotating bushing assembly further includes a spring; the spring is disposed between the positioning rod and the force-applying cover.
[0013] Optionally, one end of the duct is connected to an air source; the other end of the duct is an air outlet for connecting to the switch to be tested.
[0014] Optionally, the inspection plate is provided with a notch.
[0015] Optionally, the air duct is installed on the side of the bracket away from the rotating disk device.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] This utility model provides a maintenance and testing platform for a two-position changeover switch in a DC electric locomotive. By integrating core components such as a support frame, worktable, rotating disk device, and air ducts, it forms a highly efficient, precise, and comprehensive maintenance and testing platform. This significantly solves the problems of low efficiency, difficulty in guaranteeing maintenance quality, and inadequate test results caused by the lack of dedicated equipment in the maintenance of two-position changeover switches in DC electric locomotives in existing technologies. Specifically, the highlight of this maintenance and testing platform lies in its rotating disk device. This device not only includes a maintenance plate that is easy to disassemble and replace to adapt to the maintenance needs of different models of changeover switches, but also achieves stable rotation and precise positioning of the maintenance plate on the worktable through a precise rotating shaft and shaft sleeve structure. This not only greatly facilitates maintenance personnel in performing multi-angle and all-round inspection and maintenance operations on the changeover switch, but also significantly improves the flexibility and efficiency of the assembly and debugging process. Meanwhile, the workbench is securely mounted on the support, ensuring stability and safety throughout the entire maintenance process. The side-mounted air ducts facilitate necessary purging, cleaning, and switch commissioning, effectively removing dust and debris that may accumulate inside the switch, further ensuring the quality of maintenance and the reliability of electrical performance. Attached Figure Description
[0018] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. In the drawings:
[0019] Figure 1 This is a front view of a DC electric locomotive two-position changeover switch maintenance test bench according to the present invention;
[0020] Figure 2 This is a top view of a test bench for overhauling a two-position changeover switch for a DC electric locomotive, according to the present invention.
[0021] Figure 3 This is a schematic diagram of the rotating shaft sleeve assembly in a DC electric locomotive two-position changeover switch maintenance test bench according to the present invention.
[0022] In the diagram, 1 is the bracket; 2 is the workbench; 31 is the first inspection plate; 32 is the second inspection plate; 33 is the third inspection plate; 34 is the fourth inspection plate; 4 is the support plate; 51 is the first rotating shaft; 52 is the second rotating shaft; 53 is the third rotating shaft; 54 is the fourth rotating shaft; 61 is the first rotating shaft sleeve; 62 is the second rotating shaft sleeve; 63 is the third rotating shaft sleeve; 64 is the fourth rotating shaft sleeve; 71 is the rotating shaft sleeve; 72 is the seat; 73 is the positioning rod; 74 is the spring; 75 is the force-applying cover; 76 is the handle; 8 is the air duct; 81 is the first air duct outlet; 82 is the second air duct outlet; 83 is the third air duct outlet; 84 is the fourth air duct outlet. Detailed Implementation
[0023] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0025] To address the problems in existing technologies regarding the maintenance of two-position changeover switches for DC electric locomotives, such as the lack of dedicated maintenance and testing equipment leading to low maintenance efficiency and difficulty in ensuring maintenance quality and test accuracy, this invention provides a maintenance and testing bench for two-position changeover switches in DC electric locomotives. Figure 1 As shown, it includes a support 1, a worktable 2, a rotating disk device, and an air duct 8.
[0026] The workbench 2 is above the support 1. The workbench 2 has a round hole for placing the rotating disk device. The side of the support 1 is provided with an air duct 8.
[0027] like Figure 1 As shown, the rotating disk device includes a maintenance plate, a rotating shaft, and a rotating shaft sleeve assembly.
[0028] The inspection plate is placed in the circular hole in the workbench 2. A rotating shaft is provided at the bottom of the inspection plate, and a rotating shaft sleeve assembly is installed at the bottom of the rotating shaft. The operator controls the rotation of the inspection plate through the rotating shaft sleeve assembly.
[0029] The inspection plate includes a first inspection plate 31, a second inspection plate 32, a third inspection plate 33, and a fourth inspection plate 34. The first inspection plate 31, the second inspection plate 32, the third inspection plate 33, and the fourth inspection plate 34 are placed in the circular holes opened in the workbench 2. The spacing between each circular hole is equal, and each circular hole is located on the same central axis.
[0030] The bottom of the first inspection plate 31 is connected to the top of the first rotating shaft 51, and the bottom of the first rotating shaft 51 is connected to the first rotating shaft sleeve 61; the bottom of the second inspection plate 32 is connected to the top of the second rotating shaft 52, and the bottom of the second rotating shaft 52 is connected to the second rotating shaft sleeve 62; the bottom of the third inspection plate 33 is connected to the top of the third rotating shaft 53, and the bottom of the third rotating shaft 53 is connected to the third rotating shaft sleeve 63; the bottom of the fourth inspection plate 34 is connected to the top of the fourth rotating shaft 54, and the bottom of the fourth rotating shaft 54 is connected to the fourth rotating shaft sleeve 64.
[0031] The bracket 1 has a support plate 4 inside, and the bottoms of the first rotating shaft sleeve 61, the second rotating shaft sleeve 62, the third rotating shaft sleeve 63 and the fourth rotating shaft sleeve 64 are mounted on the support plate 4.
[0032] The inspection plate can be rotated by the rotating sleeve, and the rotation angle is 45° each time.
[0033] like Figure 2 As shown, a duct 8 is provided on the side of the bracket 1. The duct 8 is located on the side of the bracket 1 away from the inspection plate. The duct 8 includes a first duct opening 81, a second duct opening 82, a third duct opening 83 and a fourth duct opening 84.
[0034] The first duct outlet 81 is located on the central axis of the first inspection plate 31, the second duct outlet 82 is located on the central axis of the second inspection plate 32, the third duct outlet 83 is located on the central axis of the third inspection plate 33, and the fourth duct outlet 84 is located on the central axis of the fourth inspection plate 34. Furthermore, the first duct outlet 81 is located on the side of the bracket 1 away from the first inspection plate 31, the second duct outlet 82 is located on the side of the bracket 1 away from the second inspection plate 32, the third duct outlet 83 is located on the side of the bracket 1 away from the third inspection plate 33, and the fourth duct outlet 84 is located on the side of the bracket 1 away from the fourth inspection plate 34.
[0035] The inspection plate has an irregular shape; it is a circle with one corner removed.
[0036] The inlet of duct 8 is connected to the air source.
[0037] like Figure 3 As shown, the rotating shaft sleeve assembly includes a rotating shaft sleeve 71, a seat 72, a positioning rod 73, a spring 74, a force-applying cover 75, and a handle 76.
[0038] The top of the rotating sleeve 71 is connected to the rotating shaft, and the side of the rotating sleeve 71 is connected to the seat 72. The seat 72 is connected to one end of the positioning rod 73, and the other end of the positioning rod 73 is provided with a spring 74. The outside of the spring 74 is provided with a force-applying cover 75, and the force-applying cover 75 is connected to the handle 76.
[0039] This maintenance and testing device allows maintenance personnel of two-position changeover switches to assemble and adjust components in all directions from a single perspective. The device was constructed without any existing documentation; its development relied entirely on practical on-site maintenance experience and the limited mechanical drawings of the components.
[0040] This maintenance and testing device is made of iron mechanical parts that can be hoisted and moved. The device is easy to operate. During the maintenance, debugging, or testing of parts, the parts can be rotated by pulling out the positioning pin of the rotating shaft sleeve. The maintenance plate can be positioned every 45 degrees, and the workers do not need to work around the parts. It is highly operable.
[0041] Four changeover switch bases were installed onto four inspection plates on the test bench. On these inspection plates, the various components of the changeover switches were assembled, and the contact pressure of the moving and stationary contacts was adjusted. After the changeover switches were assembled and adjusted, the air duct on the device was connected to the air inlet of the changeover switch's air cylinder, and then the existing air source was connected to the air duct interface of the test bench. By pressing the electro-pneumatic valve, the operation of each drum of the changeover switch was tested, and the continuity of the main and auxiliary contacts was measured to be good.
[0042] Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the foregoing description. Therefore, the scope of this teaching should not be determined by reference to the foregoing description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed utility model subject matter.
[0043] The above content provides a further detailed description of this utility model. It should not be considered that the specific embodiments of this utility model are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the scope of protection of this utility model as defined by the submitted claims.
Claims
1. A two position transfer switch test bench for DC electric locomotives, characterized in that, It comprises a support (1), a workbench (2), a rotating disc device and an air pipe (8). The workbench (2) is arranged above the support (1), the rotating disc device is installed on the workbench (2), and the air pipe (8) is arranged in a side area of the support (1). The rotating disc device comprises an inspection plate, a rotating shaft and a rotating shaft sleeve assembly. The inspection plate is placed in the workbench (2), the bottom of the inspection plate is connected with one end of the rotating shaft, and the other end of the rotating shaft is installed with the rotating shaft sleeve assembly.
2. The two-position switch test bench for a DC electric locomotive according to claim 1, characterized in that, The inspection plate comprises a first inspection plate (31), a second inspection plate (32), a third inspection plate (33) and a fourth inspection plate (34). The first inspection plate (31), the second inspection plate (32), the third inspection plate (33) and the fourth inspection plate (34) are installed in the circular hole of the workbench (2).
3. The two-position switch test bench for a DC electric locomotive according to claim 2, characterized in that, The first inspection plate (31), the second inspection plate (32), the third inspection plate (33) and the fourth inspection plate (34) are arranged at equal intervals.
4. The two position switch test bench for DC electric locomotive according to claim 2, characterized in that, The first inspection plate (31), the second inspection plate (32), the third inspection plate (33) and the fourth inspection plate (34) are located on the same central axis.
5. The two position switch test bench for DC electric locomotive according to claim 1, characterized in that, The support (1) is further provided with a supporting plate (4). The bottom of the rotating shaft sleeve assembly is installed on the supporting plate (4).
6. The two position switch test bench for DC electric locomotive according to claim 1, characterized in that, The rotating shaft sleeve assembly comprises a rotating shaft sleeve (71), a seat (72), a positioning rod (73), a force cover (75) and a handle (76). The top of the rotating shaft sleeve (71) is connected with the rotating shaft, and the side of the rotating shaft sleeve (71) is connected with the seat (72). The seat (72) is connected with one end of the positioning rod (73), and the other end of the positioning rod (73) is externally installed with the force cover (75); the force cover (75) is connected with the handle (76).
7. The two position switch test bench for DC electric locomotive according to claim 6, characterized in that, The rotating shaft sleeve assembly further comprises a spring (74). The spring (74) is arranged between the positioning rod (73) and the force cover (75).
8. The two position switch test bench for DC electric locomotive according to claim 1, characterized in that, One end of the air pipe (8) is connected with a wind source. The other end of the air pipe (8) is an air pipe opening for connecting a to-be-detected change-over switch.
9. The two position switch test bench for DC electric locomotive according to claim 1, characterized in that, The inspection plate is provided with a notch.
10. The two position switch test bench for DC electric locomotive according to claim 1, characterized in that, The air pipe (8) is installed on one side of the support (1) away from the rotating disc device.