Universal cable pressure plate structure
By designing a universal cable clamp structure, changing the clamp section to a vertical surface and using cable clamping plates, the problem of low universality of existing cable inlet structures is solved, enabling the adaptation of multiple cable specifications and shortening the production cycle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-03-13
AI Technical Summary
The existing submersible sewage pump cable inlet structure is not highly standardized, resulting in wasted production cycles.
A universal cable clamp structure is designed. By changing the clamping section of the cable clamp to a vertical surface and using a pair of cable clamps to fix the upper part of the cable, it can be adapted to cables with different outer diameters.
This invention enables a single cable clamp to accommodate cables of various outer diameters, shortening the production cycle and eliminating eccentric torque caused by cable dragging or its own weight.
Smart Images
Figure CN223993608U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a general-purpose cable pressure plate structure. Background Technology
[0002] In existing technology, submersible sewage pump cable inlets are typically secured using cable clamps. See [link to submersible cable inlet structure] for details. Figure 1 , Figure 2 21 Cable, 22 Cable clamp, 23 Screw, 24 Cable sealing assembly, 25 Cable sealing cavity, 26 Motor upper end cover, 27 Bolt, 28 Nut, 29 Cable pressure plate. The cable clamp is described in detail below. Figure 3 , Figure 4 The cable clamping plate consists of two sections: 2201 (flare section), 2202 (retaining section), 2203 (clamping bevel), 2204 (flange connection surface), and 2205 (clamping surface). The inner diameter of the retaining section is 1 to 2 mm larger than the outer diameter of the cable. The clamping surfaces of the cable clamping plate and the cable clamping disc are paired. Generally, one type of cable clamping disc is used for one type of cable specification, resulting in low standardization and wasted production time. There is an urgent need to design a universal cable clamping disc structure that allows one type of cable clamping disc to be adapted to various cable specifications with different outer diameters. Summary of the Invention
[0003] The purpose of this invention is to design a universal cable pressure plate that can adapt one type of cable pressure plate to various types of cables with different outer diameters, thereby shortening the production cycle. This utility model designs a universal cable pressure plate structure, including a cable, a cable pressure plate, screws, a cable sealing assembly, a cable sealing cavity, a motor upper end cover, bolts, cable pressure plates, and nuts. The cable pressure plate is fitted into the cable mounting hole of the motor upper end cover, and the cable pressure plate is fastened to the end face of the motor upper end cover by screws. A cable sealing cavity is provided in the cable mounting hole at the lower part of the cable pressure plate, and a cable sealing assembly is placed in the cable sealing cavity. The cable is nested within the cable pressure plate and the cable sealing assembly. The cable pressure plate is a cylindrical body with a pair of clamping surfaces on each of the upper two sides. A first screw hole is opened on each of the clamping surfaces. A wing ring is provided on each of the two sides of the middle part of the cylindrical body, and a second screw hole is opened on each of the wing rings. An arc segment is opened on the inner side of the upper end of the cylindrical body, and a pressing slope is opened on the inner side of the lower end of the cylindrical body. Two facing cable pressure plates are fastened by bolts passing through the first screw holes on the pair of clamping surfaces. The pressing slope at the lower end of the cylindrical body abuts against the upper slope of the cable sealing assembly. The cable clamp sleeve is fastened to the end face of the motor's upper end cover by screws passing through the second screw hole on the wing ring. An outer stop is provided on the lower side of the wing ring on the outer side of the retaining section, fitting with the inner diameter of the cable sealing cavity. The advantages of this invention are: the change in the clamping section of the cable clamp, making it a vertical surface, and fixing the upper part of the cable by a pair of cable clamping plates, eliminating eccentric torque caused by cable dragging or the cable's own weight. Cable clamping plates with different inner diameters are stamped to match the cable's inner diameter. This innovative structure allows a single cable clamp to adapt to cables of various outer diameters. Attached Figure Description
[0004] Figure 1 This is a schematic diagram of the existing technology.
[0005] Figure 2 for Figure 1 AA cross-section view.
[0006] Figure 3 This is a schematic diagram of a cable pressure plate structure in the prior art.
[0007] Figure 4 for Figure 3 BB cross-section.
[0008] Figure 5 This is a schematic diagram of the structure of this utility model.
[0009] Figure 6 for Figure 5 The left view.
[0010] Figure 7 This is a schematic diagram of the cable pressure plate structure of this utility model.
[0011] Figure 8 for Figure 7 CC cross-section view.
[0012] Figure 9 This is a schematic diagram illustrating the structure of this utility model for installing thick cables.
[0013] Figure 10 This is a schematic diagram illustrating the structure of this utility model for installing thin cables. Detailed Implementation
[0014] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.
[0015] The figure shows a general-purpose cable clamp structure, including a cable 1, a cable clamp 2, screws 3, a cable sealing assembly 4, a cable sealing cavity 5, a motor upper end cover 6, bolts 7, a cable clamping plate 8, and nuts 9. The cable clamp 2 is fitted into the cable mounting hole of the motor upper end cover 6. The cable clamp 2 is fastened to the end face of the motor upper end cover 6 by screws 3. A cable sealing cavity 5 is provided in the cable mounting hole at the lower part of the cable clamp 2, and the cable sealing assembly 4 is placed inside the cable sealing cavity 5. The cable is nested within the cable clamp 2. Within the cable sealing assembly 4, the cable pressure plate 2 is a cylindrical body. On each of the upper two sides of the cylindrical body are a pair of clamping surfaces 204, with a first screw hole 203 on each clamping surface. On each of the two sides of the middle section of the cylindrical body are wing rings 208, with a second screw hole 207 on each wing ring 208. An arc segment 202 is formed on the inner side of the upper end of the cylindrical body, and a pressing inclined surface 206 is formed on the inner side of the lower end of the cylindrical body. On each of the clamping surfaces, a bolt 7 passes through the first screw hole 203 and is secured to two facing cable pressure plates 8 by a nut 8. The pressing inclined surface at the lower end of the cylindrical body is flush with the inclined surface of the cable sealing assembly. The cable pressure plate sleeve 2 is secured to the end face of the motor upper cover 6 by screws 3 passing through the second screw hole 207 on the wing ring 208. An outer stop 205 (only the position of the outer stop is indicated; the outer stop is not drawn) is provided on the lower side of the wing ring on the outer side of the retaining section, forming a fit with the inner diameter of the cable sealing cavity.
[0016] See the diagram for the cable inlet sealing assembly effect for different cable outer diameters. Figure 9 , Figure 10 Different cable sealing components and different cable pressure plates are used for different cable outer diameters, but the same cable pressure plate is used, which is a general-purpose cable pressure plate structure.
[0017] Cable inlet sealing installation process: After sequentially fitting the cable pressure plate and cable sealing assembly onto the cable root, insert them together into the cable sealing cavity of the motor's upper end cover. The outer stop of the cable pressure plate fits against the inner diameter of the cable sealing cavity, and the clamping bevel of the cable pressure plate abuts against the cable sealing assembly. Insert a screw into the second screw hole of the cable pressure plate's wing ring, matching the screw hole on the motor's upper end cover. During screw tightening, the cable pressure plate moves towards the cable sealing assembly, and the clamping bevel flattens against the upper bevel of the cable sealing assembly, causing the cable seal to deform circumferentially towards the cable and the cable sealing cavity, ensuring the cable sealing assembly fills the gap between the cable and the sealing cavity. A rounded section is provided above the clamping section to prevent cable cuts. Two cable pressure plates are placed parallel to each other on both sides of the clamping section of the cable pressure plate, and the through bolts are tightened to ensure the inner side of the cable pressure plates is flush with the cable, keeping the cable upright. This secures the upper part of the cable, eliminating eccentric torque caused by cable dragging or the cable's own weight.
[0018] For sealing solutions for thick and thin cable inlets, please refer to [link / reference]. Figure 9 , Figure 10Cables of different outer diameters require different cable sealing components. The new structure of the universal cable pressure plate, with cable pressure plates of varying inner diameters, can achieve cable inlet sealing. The cable pressure plate is made of stamped steel plate, making it easy to process.
Claims
1. A universal cable gland structure comprising a cable, a cable gland, a screw, a cable seal assembly, a cable seal cavity, a motor upper end cover, a bolt, a cable gland plate, a nut, characterized in that, The cable pressing disc sleeve is fastened on the end face of the upper end cover of the motor by screws, the cable mounting hole in the lower part of the cable pressing disc sleeve is provided with a cable sealing cavity, a cable sealing assembly is placed in the cable sealing cavity, the cable is nested in the cable pressing disc and the cable sealing assembly, the cable pressing disc is a cylindrical body, each side of the upper part of the cylindrical body is provided with a pair of clamping surfaces, the first screw holes are formed in the clamping surfaces, the wing rings are arranged on each side of the middle part of the cylindrical body, the second screw holes are formed in the wing rings, the circular arc segments are formed in the inner side of the upper end of the cylindrical body, the pressing inclined surfaces are formed in the inner side of the lower end of the cylindrical body, and the two opposite cable pressing plates are fastened on the pair of clamping surfaces by the bolts passing through the first screw holes.
2. A universal cable gland structure according to claim 1, wherein, The pressing inclined surfaces of the lower end of the cylindrical body are in abutment with the inclined surfaces of the cable sealing assembly.
3. A universal cable gland structure according to claim 1, wherein, The cable pressing disc sleeve is fastened on the end face of the upper end cover of the motor by the screws passing through the second screw holes in the wing rings.
4. The universal cable gland structure of claim 1, wherein, The outer stop is arranged on the lower side of the wing ring outside the cable pressing disc and cooperates with the inner diameter of the cable sealing cavity.