Novel splicing type truss bottom sealing plate
By using the modular truss bottom plate design, and employing components such as self-tapping screws and magnetic blocks, quick assembly and disassembly are achieved, solving the problems of lubricating oil dripping and inconvenient assembly and disassembly caused by welding connections, thus improving installation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU XINDA ESCALATOR ACCESSORIES
- Filing Date
- 2025-07-28
- Publication Date
- 2026-05-15
AI Technical Summary
In the existing technology, the welding connection of the bottom plate of the escalator truss causes lubricating oil to drip and is inconvenient to disassemble and assemble, which affects the installation efficiency.
It adopts a modular structure, with the upper and lower sealing plates fixed by self-tapping screws. The oil pan can be quickly disassembled and assembled using magnetic blocks and a rotating reset assembly. Lubricating oil is collected through the inclined surface, oil drain pipe and oil return pipe, enabling rapid disassembly.
It enables quick disassembly and assembly of the bottom plate, facilitating easy installation, and allows for rapid collection of lubricating oil to prevent dripping, thus improving installation efficiency.
Smart Images

Figure CN224242509U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of truss bottom sealing plates, and more particularly to a novel modular truss bottom sealing plate. Background Technology
[0002] The escalator truss is the core support structure of an escalator. It is mainly composed of upper chords, lower chords, vertical web members, and diagonal web members, which are connected by welding or bolts. The escalator truss provides the installation foundation for various components of the escalator, such as steps, handrails, and drive units, ensuring that these components can be stably fixed to the escalator and operate normally. The escalator truss bottom plate refers to the plate installed at the bottom of the escalator truss, which is usually made of metal.
[0003] The bottom sealing plate of the escalator truss is mainly installed at the bottom of the lower chord of the escalator truss, including the bottom of the upper horizontal section, the inclined section and the lower horizontal section, to enclose the bottom of the escalator truss. The connection between the bottom sealing plate and the truss is usually welded. The welded connection is relatively strong, but difficult to disassemble.
[0004] In the prior art, the bottom plate is usually welded to the escalator truss to prevent oil leakage. However, the welded bottom plate is prone to weld seams between itself and the truss, which can cause lubricating oil to drip. At the same time, the oil pan cannot be quickly disassembled, which makes disassembly and assembly inconvenient. Therefore, a new type of modular truss bottom plate is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a novel modular truss bottom plate, which aims to improve the problem that the existing novel modular truss bottom plate does not require welding of the bottom plate and the oil pan is inconvenient to disassemble and assemble, thus reducing the installation efficiency.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a novel modular truss bottom plate, comprising an escalator truss, an upper bottom plate on the outer wall of the escalator truss, a lower bottom plate at the bottom of the upper bottom plate, self-tapping screws on the inner wall of the lower bottom plate, an opening on the outer wall of the upper bottom plate, a U-shaped support frame fixedly connected to the bottom of the upper bottom plate, an oil pan on the top of the U-shaped support frame, a connecting block fixedly connected to the outer wall of the oil pan, a through slot on the outer wall of the connecting block, an installation groove on the side wall of the connecting block, a magnetic sheet fixedly connected to the inner wall of the installation groove, a connecting rod on the inner surface of the U-shaped support frame, a magnetic block fixedly connected to the end of the connecting rod, a spring fixedly connected to the inner surface of the U-shaped support frame, and a rotation reset assembly on the surface of the U-shaped support frame.
[0007] As a further description of the above technical solution:
[0008] The outer wall of the self-tapping screw is threaded to the inner wall of the escalator truss.
[0009] As a further description of the above technical solution:
[0010] The upper surface of the lower sealing plate is in contact with the bottom of the U-shaped support frame, and the connecting rod passes through the U-shaped support frame.
[0011] As a further description of the above technical solution:
[0012] The rotary reset assembly includes a collar, the outer wall of which is fixedly connected to a coil spring, and the inner wall of which is provided with a sliding groove, and the inner wall of which is slidably connected to a slider.
[0013] As a further description of the above technical solution:
[0014] The end of the collar is rotatably connected to the outer wall of the U-shaped support frame, and the collar is sleeved on the outer wall of the connecting rod.
[0015] As a further description of the above technical solution:
[0016] The side of the slider away from the groove is fixedly connected to the outer wall of the connecting rod.
[0017] As a further description of the above technical solution:
[0018] The bottom of the inner wall of the oil pan is provided with an inclined surface. An oil drain pipe is fixedly connected to the inner wall of the oil pan. A threaded ring is rotatably connected to the end of the oil drain pipe. A connecting ring is threadedly connected to the inner wall of the threaded ring. An oil return pipe is rotatably connected to the end of the connecting ring. A sealing ring is fixedly connected to the outer wall of the opening.
[0019] As a further description of the above technical solution:
[0020] The inner surface of the sealing ring is adapted to the outer wall of the oil pan.
[0021] This utility model has the following beneficial effects:
[0022] In this utility model, the upper and lower sealing plates are assembled by setting up a structure including two sets of bottom sealing plates, self-tapping screws, openings, oil pans, U-shaped support frames, connecting blocks, straight slots, mounting slots, magnetic sheets, magnetic blocks and rotary reset components, and the oil pan that receives lubricating oil can be quickly disassembled and assembled, which facilitates installation.
[0023] In this invention, by providing an inclined surface, an oil drain pipe, a threaded ring, a connecting ring, an oil return pipe, and a sealing ring, the lubricating oil collected inside the oil pan can be quickly channeled into an external storage tank through two sets of pipes. Furthermore, the two sets of pipes can be disassembled, making it convenient to separate the oil pan from the pipes when removing it. Attached Figure Description
[0024] Figure 1 This is an external schematic diagram of the main structure of a novel modular truss bottom plate proposed in this utility model;
[0025] Figure 2 A side view of the main structure of a novel modular truss bottom plate proposed in this utility model, excluding the escalator truss.
[0026] Figure 3 A top view of the main structure of a novel modular truss bottom plate proposed in this utility model, excluding the escalator truss.
[0027] Figure 4 This is a partial rear view schematic diagram of a novel modular truss bottom plate proposed in this utility model;
[0028] Figure 5 This is a partial structural cross-sectional view of a novel modular truss bottom plate proposed in this utility model;
[0029] Figure 6 This utility model proposes a novel modular truss bottom plate. Figure 5 Enlarged schematic diagram of region A in the middle.
[0030] Legend:
[0031] 1. Escalator truss; 2. Upper bottom plate; 3. Lower bottom plate; 4. Self-tapping screw; 5. Opening; 6. Oil pan; 7. U-shaped support frame; 8. Connecting block; 9. Straight groove; 10. Mounting groove; 11. Magnetic sheet; 12. Magnetic block; 13. Connecting rod; 14. Spring; 15. Collar; 16. Coil spring; 17. Slide groove; 18. Sliding block; 19. Inclined surface; 20. Oil drain pipe; 21. Threaded ring; 22. Connecting ring; 23. Oil return pipe; 24. Sealing ring. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Reference Figures 1-3This utility model provides an embodiment of a novel modular truss bottom plate, comprising an escalator truss 1, an upper bottom plate 2 on the outer wall of the escalator truss 1, a lower bottom plate 3 at the bottom of the upper bottom plate 2, and self-tapping screws 4 on the inner wall of the lower bottom plate 3. Both the upper bottom plate 2 and the lower bottom plate 3 are fixed to the surface of the escalator truss 1 by several sets of equidistantly distributed self-tapping screws 4, with adjacent areas of the upper bottom plates 2 stacked and fitted together, and the same applies to the lower bottom plates 3, to prevent lubricating oil from dripping from the escalator chain. The outer wall of the self-tapping screws 4 is threadedly connected to the inner wall of the escalator truss 1. An opening 5 is provided on the outer wall of the upper bottom plate 2, and a U-shaped support frame 7 is fixedly connected to the bottom of the upper bottom plate 2. The upper surface of the lower bottom plate 3 is fitted to the bottom of the U-shaped support frame 7, and an oil pan 6 is provided on the top of the U-shaped support frame 7. The lubricating oil at the ladder chain is received. A connecting block 8 is fixedly connected to the outer wall of the oil pan 6. There are two sets of connecting blocks 8, and the two sets of connecting blocks 8 are mirror images of each other with the central axis of the oil pan 6 as the axis of symmetry. A straight groove 9 is opened through the outer wall of the connecting block 8. An installation groove 10 is opened on the side wall of the connecting block 8. The straight groove 9 and the installation groove 10 are arranged in a cross shape. A magnetic sheet 11 is fixedly connected to the inner wall of the installation groove 10. A connecting rod 13 is provided on the inner surface of the U-shaped support frame 7. The connecting rod 13 passes through the U-shaped support frame 7. A magnetic block 12 is fixedly connected to the end of the connecting rod 13. The shape of the magnetic block 12 is the same as the shape of the straight groove 9, and the volume of the magnetic block 12 is slightly smaller than the volume of the straight groove 9, so that it can pass through the straight groove 9. A spring 14 is fixedly connected to the inner surface of the U-shaped support frame 7. The spring 14 is sleeved on the outer wall of the connecting rod 13.
[0034] Reference Figures 4-6 The surface of the U-shaped support frame 7 is provided with a rotary reset assembly, which includes a collar 15, a coil spring 16, a groove 17, and a slider 18. The end of the collar 15 is rotatably connected to the outer wall of the U-shaped support frame 7, and the outer wall of the collar 15 is fixedly connected to the coil spring 16. The fixed end of the coil spring 16 is fixedly connected to the side wall of the U-shaped support frame 7. The collar 15 is sleeved on the outer wall of the connecting rod 13. The inner wall of the collar 15 is provided with a groove 17, and the inner wall of the groove 17 is slidably connected to the slider 18. The side of the slider 18 away from the groove 17 is fixedly connected to the outer wall of the connecting rod 13. Two sets of grooves 17 and sliders 18 are provided on each set of collars 15 and are distributed in a mirror image for connecting to the connecting rod 13.
[0035] Reference Figure 4The bottom of the inner wall of the oil pan 6 is provided with an inclined surface 19. The inclined surface 19 helps the dripping lubricating oil move towards the drain pipe 20. The drain pipe 20 is fixedly connected to the inner wall of the oil pan 6. The end of the drain pipe 20 is rotatably connected to a threaded ring 21. The inner wall of the threaded ring 21 is threadedly connected to a connecting ring 22. The end of the connecting ring 22 is rotatably connected to a return pipe 23. A local area of the return pipe 23 is made of a retractable material. The tail end of the return pipe 23 is connected to an external storage tank for collecting lubricating oil. The outer wall of the opening 5 is fixedly connected to a sealing ring 24. The inner surface of the sealing ring 24 is adapted to the outer wall of the oil pan 6.
[0036] Working principle: After the upper sealing plate 2 is fixed to the escalator truss 1 with self-tapping screws 4, the oil pan 6 is placed on the U-shaped support frame 7. The compression of the two sets of connecting blocks 8 causes the magnetic block 12 to be forced to move the connecting rod 13 outward. At the same time, the slider 18 moves outward inside the slide groove 17. At this time, the magnetic block 12 is in a compressed state due to the elastic force of the spring 14. When a pushing force is applied to the outer end of the connecting rod 13, the connecting rod 13 drives the magnetic block 12 to rotate, and at the same time drives the collar 15 to rotate. The connecting rod 13 causes the magnetic block 12 to rotate. After the magnetic block 12 is aligned with the straight slot 9, the spring force of the spring 14 returns and allows the magnetic block 12 to pass through the straight slot 9. After the spring force of the coil spring 16 gradually recovers, it drives the magnetic block 12 to rotate, so that it enters the mounting groove 10 and attracts the magnetic sheet 11. After the oil pan 6 is fixed, the connecting ring 22 is screwed into the threaded ring 21, and the oil return pipe 23 is connected to the oil drain pipe 20. Finally, the lower sealing plate 3 is fixed on the escalator truss 1, and the lubricating oil naturally slides into the oil pan 6 through the arc of the upper sealing plate 2.
[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A novel modular truss bottom plate, including an escalator truss (1), characterized in that: The outer wall of the escalator truss (1) is provided with an upper bottom plate (2), the bottom of the upper bottom plate (2) is provided with a lower bottom plate (3), the inner wall of the lower bottom plate (3) is provided with self-tapping screws (4), the outer wall of the upper bottom plate (2) is provided with an opening (5), the bottom of the upper bottom plate (2) is fixedly connected with a U-shaped support frame (7), the top of the U-shaped support frame (7) is provided with an oil pan (6), the outer wall of the oil pan (6) is fixedly connected with a connecting block (8), the... A straight slot (9) is provided through the outer wall of the connecting block (8). An installation slot (10) is provided on the side wall of the connecting block (8). A magnetic sheet (11) is fixedly connected to the inner wall of the installation slot (10). A connecting rod (13) is provided on the inner surface of the U-shaped support frame (7). A magnetic block (12) is fixedly connected to the end of the connecting rod (13). A spring (14) is fixedly connected to the inner surface of the U-shaped support frame (7). A rotation reset assembly is provided on the surface of the U-shaped support frame (7).
2. The novel modular truss bottom plate according to claim 1, characterized in that: The outer wall of the self-tapping screw (4) is threaded to the inner wall of the escalator truss (1).
3. The novel modular truss bottom plate according to claim 1, characterized in that: The upper surface of the lower sealing plate (3) is in contact with the bottom of the U-shaped support frame (7), and the connecting rod (13) passes through the U-shaped support frame (7).
4. The novel modular truss bottom plate according to claim 1, characterized in that: The rotary reset assembly includes a collar (15), the outer wall of which is fixedly connected to a coil spring (16), and the inner wall of the collar (15) is provided with a groove (17), and the inner wall of the groove (17) is slidably connected to a slider (18).
5. The novel modular truss bottom plate according to claim 4, characterized in that: The end of the collar (15) is rotatably connected to the outer wall of the U-shaped support frame (7), and the collar (15) is sleeved on the outer wall of the connecting rod (13).
6. The novel modular truss bottom plate according to claim 4, characterized in that: The side of the slider (18) away from the groove (17) is fixedly connected to the outer wall of the connecting rod (13).
7. The novel modular truss bottom plate according to claim 1, characterized in that: An inclined surface (19) is provided at the bottom of the inner wall of the oil pan (6). An oil drain pipe (20) is fixedly connected to the inner wall of the oil pan (6). A threaded ring (21) is rotatably connected to the end of the oil drain pipe (20). A connecting ring (22) is threadedly connected to the inner wall of the threaded ring (21). An oil return pipe (23) is rotatably connected to the end of the connecting ring (22). A sealing ring (24) is fixedly connected to the outer wall of the opening (5).
8. The novel modular truss bottom plate according to claim 7, characterized in that: The inner surface of the sealing ring (24) is adapted to the outer wall of the oil pan (6).