Gear c type pin replacement tooling for a motor train set plug door stabilizer
By designing a tooling for replacing the C-pin of the gear in the sliding door stabilizer, the C-pin can be replaced directly without leaving the train, solving the problems of large workload and potential operational order hazards in the existing technology, and improving the train's on-line rate and operational stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BOMBARDIER SIFANG QINGDAO TRANSPORTATION
- Filing Date
- 2025-05-09
- Publication Date
- 2026-06-23
Smart Images
Figure CN224391008U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rail vehicle technology, specifically to a tooling for replacing the C-pin of a gear in a train's sliding door stabilizer. Background Technology
[0002] With social development, high-speed trains have gradually become one of the main modes of transportation for people. Therefore, the maintenance technology and tooling for high-speed trains are constantly being innovated and developed. This research focuses on tooling for replacing the C-pins of the sliding door stabilizer gears without disembarking the train. The aim is to reduce the workload of replacing the C-pins of the sliding door stabilizer gears and avoid affecting the train's operational rate.
[0003] The stabilizer is the baseline of the entire sliding door system. It bears the weight of the door panel and positions the door during opening and closing. To address this issue, current solutions typically involve removing the stabilizer from the train set, replacing the C-pins on the ground using a punch, and then reinstalling the stabilizer back on the train set. This current solution has three problems: First, it's labor-intensive, affecting train set uptime. Replacing the stabilizer's C-pins involves five steps: first, removing the door panel from the train set, requiring four people; second, disassembling the stabilizer, requiring two people; and third, removing the C-pins on the ground using a punch and installing the new C-pins with a hammer. After the fourth stabilizer C-pin replacement is completed, the stabilizer is reinstalled. Finally, the door panels are reinstalled. This reinstallation work also requires four people to complete. The entire C-pin replacement work requires multiple people working for a long time, affecting the train's operational rate. Secondly, there is the issue of readjusting the sliding doors. After disassembling and reinstalling the stabilizer, the installation benchmark of the sliding door system changes, requiring readjustment of the sliding door panels, locking mechanisms, limit switches, and other components to ensure normal door operation. Thirdly, there is a potential problem affecting the train's operational order. Static testing of the sliding doors does not guarantee their perfect functionality; they still require trial operation to reach optimal performance. If a sliding door malfunctions during train operation, causing delays, it will disrupt the train's operational order. Summary of the Invention
[0004] This utility model provides a tooling for replacing the C-pin of a gear in a sliding door stabilizer, so as to replace the C-pin of the gear without removing the sliding door stabilizer from the vehicle.
[0005] The technical solution of this utility model is as follows:
[0006] A tooling for replacing the C-pin of the gear in a high-speed train's sliding door stabilizer, comprising:
[0007] The tooling base frame has a slide rail in its internal cavity, a first hole communicating with the internal cavity on one outer surface, a second hole communicating with the internal cavity on the other outer surface, and a fixing structure for fixing the gear on the other outer surface.
[0008] The slider is mounted on the slide rail;
[0009] A threaded push rod, one end of which passes through the first hole and connects to the slider;
[0010] The ejector pin has one end passing through the second hole and connecting to the slider;
[0011] The threaded push rod drives the slider to move the push pin to one side of the gear, so that the other end of the push pin extends into the C-pin hole of the gear and pushes out the C-pin, or so that the other end of the push pin pushes the C-pin into the C-pin hole of the gear.
[0012] Preferably, the fixing structure is a hook formed on the outer surface of the workpiece base on the other side, the hook being used to hook the root of the gear teeth.
[0013] Preferably, the threaded push rod is provided with a coarse external thread, and the first hole is provided with a coarse internal thread, and the threaded push rod is threadedly connected in the first hole.
[0014] Preferably, there are two hooks, which are used to symmetrically hook onto the root of the gear teeth.
[0015] Preferably, the threaded ejector rod, tooling base, slider, and ejector pin are all metal parts.
[0016] The beneficial effects of this utility model are as follows:
[0017] The replacement of the gear C-pin has been simplified from the existing five steps to just three steps. The gear C-pin can be replaced without removing the door stabilizer from the train, minimizing the workload of C-pin replacement. There is no need to adjust the door, which also reduces the workload. It also avoids the potential for door malfunction caused by the removal and installation of the stabilizer, eliminating the impact on the operation of the EMU. Attached Figure Description
[0018] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.
[0019] Figure 1 This is a schematic diagram of the tooling disassembly in an embodiment of the present utility model;
[0020] Figure 2 This is a schematic diagram of the tooling disassembly in an embodiment of the present utility model;
[0021] Figure 3 This is a schematic diagram of the gears in an embodiment of the present utility model;
[0022] Figure 4 This is a schematic diagram of the gears in an embodiment of the present utility model;
[0023] Figure 5 This is a schematic diagram of the tooling assembly in an embodiment of the present utility model;
[0024] Figure 6 for Figure 5 CC section view;
[0025] Figure 7 for Figure 5 DD sectional view. Detailed Implementation
[0026] Reference Figures 1-7 This embodiment provides a tooling for replacing the C-pin of a sliding door stabilizer, which allows for the replacement of the C-pin without removing the sliding door stabilizer from the vehicle.
[0027] Reference Figure 1 , Figure 2 , Figures 5-7 The tooling in this embodiment includes:
[0028] The tooling base frame 1 has a slide rail 11 in its internal cavity, a first hole 12 communicating with the internal cavity on one outer surface, a second hole 13 communicating with the internal cavity on the other outer surface, and a fixing structure 15 for fixing the gear 5 on the other outer surface.
[0029] Slider 2 is mounted on slide rail 11;
[0030] The threaded push rod 3 has one end passing through the first hole 12 and connected to the slider 2;
[0031] The ejector pin 4 has one end passing through the second hole 13 and connected to the slider 3.
[0032] like Figure 2 For the tooling base 1, a third hole 14 is provided on both sides of its internal cavity. During assembly, the slider 2 is first placed in the internal cavity of the tooling base 1. One end of the slide rail 11 is inserted through the third hole 14 on the side of the tooling base 1, passes through the internal cavity, and is inserted into the third hole 14 on the other side of the internal cavity. The part of the slide rail 11 in the internal cavity is engaged in the groove 21 of the slider 2. In addition, to prevent the slide rail 11 from falling off, a first screw hole is provided in the radial direction of the slide rail 11, and a second screw hole is provided on the tooling base 1. A screw is passed through the second screw hole of the tooling base 1 and screwed into the first screw hole of the slide rail 11, thereby fixing the tooling base 1 and the slide rail 11 by screwing.
[0033] Combination Figure 3 , Figure 4 ,Figure 6 and Figure 7 When it is necessary to replace the C-pin 51, the tooling is lowered from the top of the gear 5 of the stabilizer, so that the hooks symmetrically hook the two tooth roots of the gear 5 to fix the gear 5. Then, the threaded push rod 3 is rotated forward by the wrench to push the slider 2 to move forward parallel to the slide rails 11 on both sides of the tooling base 1, so that the other end of the push pin 4 extends into the C-pin hole of the gear 5 and pushes out the C-pin 51 installed in the C-pin hole of the gear 5. When replacing the new C-pin 51, the tooling is first reset, that is, the threaded push rod 3 is rotated in the opposite direction by the wrench, while the slider 2 is returned to the middle position. The push pin 4 is manually removed from the C-pin hole of the gear 5. Then, the new C-pin 51 is placed in front of the push pin 4, and the threaded push rod 3 is rotated forward by the wrench to drive the push pin 4 to push the new C-pin 51 into the C-pin hole of the gear 5.
[0034] In this embodiment, the fixing structure 15 is a hook formed on the outer surface of the workpiece base 1 on the other side, and the hook is used to hook the root of the gear 5. Figure 5 As you can see, two symmetrically arranged hooks respectively hook onto the two tooth roots of gear 5, thereby fixing gear 5 in place and preventing gear 5 from moving relative to pin 4 when pushing out / installing C-pin. Specifically, gear 5 is mounted on the top of stabilizer connecting rod, and the tooling is mounted from the top of gear 5 downwards, with hooks hooking onto gear 5 along the symmetrical tooth roots; after replacement, the tooling is removed upwards along gear 5.
[0035] In this embodiment, the threaded push rod 3 is provided with a coarse external thread, and the first hole 12 is provided with a coarse internal thread. The threaded push rod 3 is threadedly connected in the first hole 12.
[0036] In this embodiment, the threaded ejector rod 3, the tooling base 1, the slider 2, and the ejector pin 4 are all metal parts.
[0037] Using the tooling described in this embodiment, the C-pin 51 of the stabilizer gear 5 can be directly replaced on the EMU without disassembling and reassembling the stabilizer, minimizing the workload of C-pin replacement, saving a lot of manpower and resources, and reducing the impact on the EMU's operational rate. The installation benchmark of the sliding door system remains unchanged, eliminating the need to debug the sliding door leaf, locking mechanism, limit switch, and other components, thus reducing the workload of replacement as well. It also avoids the potential for sliding door failure caused by stabilizer disassembly and reassembly, eliminating the impact on the EMU's operational order.
Claims
1. A tooling for replacing the C-pin of the gear in a high-speed train's sliding door stabilizer, characterized in that, include: The tooling base frame (1) has a slide rail (11) in its internal cavity, a first hole (12) connecting the internal cavity is provided on one outer surface of the tooling, a second hole (13) connecting the internal cavity is provided on the other outer surface of the tooling, and a fixing structure (15) for fixing the gear (5) is provided on the other outer surface of the tooling. The slider (2) is mounted on the slide rail (11); The threaded push rod (3) has one end passing through the first hole (12) and then connected to the slider (2); The ejector pin (4) has one end passing through the second hole (13) and connected to the slider (2); The threaded push rod (3) drives the slider (2) to push the push pin (4) to one side of the gear (5), so that the other end of the push pin (4) extends into the C-pin hole of the gear (5) and pushes out the C-pin (51), or, so that the other end of the push pin (4) pushes the C-pin (51) into the C-pin hole of the gear (5).
2. The gear C-pin replacement fixture for the EMU sliding door stabilizer according to claim 1, characterized in that, The fixing structure (15) is a hook formed on the outer surface of the tooling base (1) on the other side, which is used to hook the root of the gear (5).
3. The gear C-pin replacement fixture for the EMU sliding door stabilizer according to claim 1, characterized in that, The threaded push rod (3) is provided with a coarse external thread, and the first hole (12) is provided with a coarse internal thread. The threaded push rod (3) is threadedly connected in the first hole (12).
4. The gear C-pin replacement fixture for the EMU sliding door stabilizer according to claim 2, characterized in that, There are two hooks, which are used to hook symmetrically at the root of the gear (5).
5. The gear C-pin replacement tooling for the EMU sliding door stabilizer according to claim 2, characterized in that, The threaded ejector rod (3), tooling base frame (1), slider (2), and ejector pin (4) are all metal parts.