Cable lead-in device sealed by rapid solidification type filler

Abstract

The utility model relates to the field of cable connecting devices, in particular to a rapid solidification type filler sealed cable lead-in device which comprises a lead-in cylinder, a mounting groove is formed in the inner side wall of the lead-in cylinder, a filler storage part is arranged in the mounting groove, the filler storage part is of a shell structure and is filled with a foaming filler, and the foaming filler is filled with a foaming agent. The foaming filler can be foamed and expanded when making contact with air, a pressing plate is arranged on one side of the filler storage part, the pressing plate is slidably connected to the introduction cylinder, the pressing plate can be close to the filler storage part by sliding the pressing plate, and the filler storage part can be torn when the pressing plate extrudes the filler storage part. According to the invention, the sealing effect between the cable and the equipment is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cable connection devices, in particular to a cable introduction device with rapid solidification type filler sealing. BACKGROUND

[0002] The cable introduction device is commonly used in the connection between equipment and cables, and is a common electrical connector. Its main function is to fix the cables and introduce the cables into the equipment, so that the cables can be stably connected with the equipment (here, the equipment includes a power distribution cabinet or some production equipment).

[0003] In the environment of mine exploitation, it is often dark and humid. In order to prevent water vapor from entering the inside of the power distribution cabinet from the connection between the cable and the power distribution cabinet, the introduction device usually adopts a sealing ring for sealing treatment. For example, the utility model patent with the publication number CN117996593A discloses a general type of mine cable introduction device, which mainly comprises an introduction cylinder and an inner sleeve ring arranged in the introduction cylinder. The cable is arranged in the inner sleeve ring. The introduction cylinder is provided with a pressing plate at one end. The pressing plate can slide and press the inner sleeve ring to deform the inner sleeve ring, so as to realize the sealing of the connection between the cable and the equipment.

[0004] In the related art, the cable is sealed by the inner sleeve ring made of rubber material. The sealing effect is easily affected by the external environment, such as the pressure of the pressing plate on the inner sleeve ring, the uniformity of the force applied by the pressing plate on the inner sleeve ring, and the pressure of the cable on the inner sleeve ring. Therefore, the stability of the sealing effect of the introduction device in the related art during use needs to be further improved. UTILITY MODEL CONTENT

[0005] In order to improve the stability of the sealing effect of the cable introduction device on the connection between the cable and the equipment, the application provides a cable introduction device with rapid solidification type filler sealing.

[0006] The cable introduction device with rapid solidification type filler sealing provided by the application adopts the following technical scheme:

[0007] The cable introduction device with rapid solidification type filler sealing comprises an introduction cylinder. An installation groove is formed on the inner side wall of the introduction cylinder. A filler storage member is arranged in the installation groove. The filler storage member is a shell structure, and is filled with a foaming filler. The foaming filler can foam and expand when in contact with air. A pressing plate is arranged on one side of the filler storage member. The pressing plate is slidingly connected to the introduction cylinder. Sliding the pressing plate can make the pressing plate close to the filler storage member. When the pressing plate presses the filler storage member, the filler storage member can be torn.

[0008] With this technical solution, after the cable is inserted into the introduction tube, the extrusion plate is slid closer to the filler reservoir. This squeezes the filler reservoir, tearing it apart. The foaming filler inside the reservoir comes into contact with air, expanding and foaming, filling the gap between the cable and the introduction tube, sealing the connection between the cable and the device. Compared to conventional sealing methods, this solution avoids issues associated with pressure or force uniformity, and improves the stability of the sealing effect between the cable and the device.

[0009] Optionally, the filler storage element has an annular structure.

[0010] By adopting the above technical solution, the annular filler storage member allows the foaming filler to be squeezed out more evenly around the cable after the filler storage member is torn, further improving the sealing effect between the sealed cable and the introduction barrel.

[0011] Optionally, a plurality of weakened grooves are evenly formed on the inner side wall of the filler storage member along its circumference.

[0012] By adopting the above technical solution, a weak groove is opened on the inner wall of the filler storage component, so that the structural strength of the corresponding area of ​​the filler storage component is reduced. When the filler storage component is subjected to pressure, stress concentration occurs at this position and it is torn first, which facilitates the extrusion of the foam filler inside the filler storage component.

[0013] Optionally, a filling groove connected to the mounting groove is opened on the inner side wall of the introduction cylinder.

[0014] By adopting the above technical solution, the filling groove is connected to the installation groove, and the foaming filler inside the filler storage part is squeezed out and can expand into the filling groove. On the one hand, it enables the foaming filler to foam better, and on the other hand, it increases the contact area between the foaming filler and the cable, further improving the sealing effect between the cable and the introduction tube.

[0015] Optionally, an observation hole communicating with the filling tank is provided on the outer side wall of the introduction cylinder.

[0016] By adopting the above technical solution, after the foaming filler is foamed, the excess foaming filler can be discharged from the observation hole, which facilitates the contact between the external air and the foaming filler, thereby improving the foaming effect of the foaming filler.

[0017] Optionally, a limiting assembly is provided at one end of the introduction cylinder, and the limiting assembly includes an extrusion member and a driving member. The driving member is connected to the introduction cylinder and can move in a direction parallel to the axis of the introduction cylinder; the extrusion member includes an extrusion portion of an arc-shaped plate structure coaxially arranged with the introduction cylinder, and the extrusion portion is made of elastic material. The movement of the driving member can cause the extrusion portion to bend away from one end of the introduction cylinder toward a direction close to its own axis.

[0018] By adopting the above technical solution, the cable is passed through the introduction tube. When the driving member drives the extrusion part to bend away from one end of the introduction tube toward its own axis, the extrusion part can abut against the cable, and the cable is limited under the action of friction.

[0019] Optionally, the extrusion member further includes a connecting portion, which is a circular ring structure, is coaxially arranged with the introduction cylinder, and the driving member is threadedly sleeved on the connecting portion.

[0020] By adopting the above technical solution, the driving member is threadedly connected to the connecting cylinder, so that the driving member can move in a direction parallel to the introduction cylinder. At the same time, the self-locking property of the thread is used to improve the stability of the extrusion part in limiting the cable.

[0021] Optionally, the pressure plate is located on a side of the filler storage member close to the driving member, and a linkage member is provided between the driving member and the pressure plate. The linkage member includes a connecting rod slidingly provided on the introduction cylinder along a direction parallel to the sliding direction of the driving member, one end of the connecting rod is fixed on the pressure plate, and the other end extends toward the direction close to the driving member. The movement of the driving member toward the direction close to the introduction cylinder can drive the connecting rod to move toward the direction close to the filler storage member.

[0022] By adopting the above technical solution, the driving member drives the extrusion part to limit the cable while driving the connecting rod to move. The movement of the connecting rod drives the pressure plate to move to squeeze the filler storage part, thereby fixing the cable and sealing the gap between the cable and the introduction tube, thereby improving construction efficiency.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: the gap between the cable and the introduction tube is expanded and filled by the characteristics of the foaming filler itself. Compared with the sealing method in the related art, it avoids the influence of external pressure size and pressure uniformity, and improves the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.

[0026] Figure 3 It is a structural diagram of the linkage parts of an embodiment of the present application.

[0027] Figure numerals: 1. Introduction cylinder; 11. Installation groove; 12. Filling groove; 13. Blocking groove; 2. Filler storage member; 21. Weak groove; 3. Pressure plate; 4. Observation hole; 5. Limiting assembly; 51. Extrusion member; 511. Connecting part; 512. Extrusion part; 513. Inclined surface; 52. Driving member; 53. Abutment ring; 6. Linkage member; 61. Connecting rod; 62. Linkage ring. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] An embodiment of the present application discloses a cable entry device sealed with a rapid-setting filler.

[0030] Reference Figure 1 and Figure 2 A cable entry device with a fast-setting filler seal includes: an entry tube 1 and a filler storage member 2. The entry tube 1 is a circular cylindrical structure, and the cable is passed through the entry tube 1. The filler storage member 2 is a hollow annular structure, and the filler storage member 2 is filled with a foaming filler (in this embodiment, the foaming filler is polyurethane foam). The filler storage member 2 is coaxially arranged inside the entry tube 1, and a sliding pressure plate 3 is provided on one side of the filler storage member 2. The sliding pressure plate 3 can move the pressure plate 3 closer to or away from the filler storage member 2. The filler storage member 2 is made of a material with relatively low structural strength (in this embodiment, the filler storage member 2 is made of plastic). After the cable is passed through the entry tube 1, the pressure plate 3 is moved so that the pressure plate 3 squeezes the filler storage member 2. Under the action of pressure, the filler storage member 2 can be torn, thereby causing the foaming filler inside the filler storage member 2 to flow out. The foaming filler quickly foams when in contact with air to fill the gap between the cable and the entry tube 1, and then quickly solidifies to achieve a seal at the connection between the cable and the equipment. The situation in which the sealing effect is affected by the pressure and the uniformity of the force is avoided, thereby improving the sealing effect of the lead-in device and the sealing stability of the introduction device.

[0031] Reference Figure 1 and Figure 2 An annular mounting groove 11 is provided on the inner side wall of the introduction tube 1, and the filler storage member 2 is installed in the mounting groove 11 to facilitate the installation of the filler storage member 2. The pressure plate 3 is an annular structure, is coaxially arranged with the introduction tube 1, and is slidably fitted on the side wall of the mounting groove 11 along the length direction of the introduction tube 1.

[0032] Reference Figure 1 and Figure 3 A plurality of weak grooves 21 are evenly arranged along the circumference of the inner wall of the filler storage member 2. By providing the weak grooves 21, the positions corresponding to the weak grooves 21 on the filler storage member 2 form weak areas with relatively weak structural strength, which facilitates the extrusion of the filler inside the filler storage member 2.

[0033] Reference Figure 1 and Figure 2 An annular filling groove 12 is also provided on the inner sidewall of the introduction tube 1 and communicates with the mounting groove 11. After being extruded, the foaming filler expands and diffuses into the filling groove 12. The provision of the filling groove 12 not only facilitates the foaming of the foaming filler but also increases the contact area between the foaming filler and the cable, further enhancing the sealing effect.

[0034] Reference Figure 1 and Figure 2 The side wall of the filling groove 12 parallel to the axis of the introduction tube 1 is provided with a plurality of annular blocking grooves 13 in a direction parallel to its own axis. The foaming filler can diffuse into the blocking groove 13 after foaming, thereby better blocking the spread of water vapor.

[0035] Reference Figure 1 and Figure 2 An observation hole 4 is provided on the outer wall of the introduction tube 1, which is connected to the blocking groove 13. Excess filler from the foaming port can be discharged through the observation hole 4. On the one hand, the staff can judge whether the introduction tube 1 is fully filled based on the residual material discharged from the observation hole 4. If the foaming filler does not overflow the observation hole 4, the staff can inject the foaming filler into the blocking groove 13 again through the observation hole 4 to ensure the sealing effect. On the other hand, external air can enter the filling groove 12 through the observation hole 4, facilitating the foaming filler to contact with air and foam.

[0036] Reference Figure 1 and Figure 2 A limiting assembly 5 for fixing the cable is provided at one end of the introduction tube 1. The limiting assembly 5 includes an extrusion member 51 and a driving member 52. The extrusion member 51 includes a connecting portion 511 and an extrusion portion 512. The connecting portion 511 is a circular ring structure and is coaxially welded to one end of the introduction tube 1. The extrusion portion 512 is an arc-shaped plate structure and is coaxially welded to the end face of the connecting portion 511 away from the introduction tube 1. The extrusion portion 512 is made of elastic metal material. The driving member 52 is threadedly connected to the connecting portion 511. Rotating the driving member 52 can drive the extrusion portion 512 to bend in the direction of the axis of the connecting portion 511 away from the connecting portion 511. The extrusion portion 512 can bend in the direction of the axis of the connecting portion 511 away from the connecting portion 511 to squeeze and tighten the cable, thereby achieving the fixation of the cable. In order to improve the stability of cable fixation, a plurality of extrusion portions 512 can be evenly spaced along the circumference of the connecting portion 511. In this embodiment, four are provided.

[0037] Reference Figure 1 and Figure 2The driving member 52 is a circular ring structure, an inner wall of the driving member 52 is provided with an internal thread, an outer wall of the connecting portion 511 is provided with an external thread, and the driving member 52 is threadedly sleeved on the connecting portion 511 to realize a threaded connection between the driving member 52 and the connecting portion 511.

[0038] Reference Figure 1 and Figure 2 The driving member 52 is provided with an abutment ring 53 at a position close to the extrusion portion 512, and the abutment ring 53 is integrally formed and provided on the driving ring. An inclined surface 513 is provided on the end surface of the extrusion portion 512 away from the connecting portion 511, and the inclined surface 513 is inclined along the axial direction of the extrusion portion 512 from the side close to the connecting portion 511 to the side away from the connecting portion 511 toward the direction close to its own axis. A mating surface that fits with the inclined surface 513 is provided on the inner side wall of the abutment ring 53. When the driving member 52 is rotated, the driving member 52 can move in the direction close to the introduction tube 1 under the action of the thread, and the movement of the driving member 52 can cause the extrusion portion 512 to bend in the direction close to its own axis under the action of the inclined surface 513, thereby achieving tight contact with the cable.

[0039] Reference Figure 1 and Figure 2 The pressure plate 3 is located on the side of the filler storage member 2 close to the driving member 52, and a linkage member 6 is provided between the pressure plate 3 and the driving member 52. The linkage member 6 includes a connecting rod 61, one end of the connecting rod 61 is welded to the pressure plate 3, and the other end extends to the outside of the introduction tube 1 in the direction close to the driving member 52. When the driving member 52 moves in the direction close to the introduction tube 1, it can abut against the connecting rod 61, so that the gap between the cable and the introduction tube 1 can be sealed during the process of the driving member 52 locking the cable, thereby improving construction efficiency. In order to improve the uniformity of the force on the pressure plate 3, a plurality of connecting rods 61 can be evenly spaced along the circumference of the pressure plate 3. In this embodiment, six are provided. The linkage member 6 also includes a linkage ring 62, which is coaxially arranged with the introduction tube 1 and is located on the side of the connecting rod 61 away from the pressure plate 3. The linkage ring 62 is welded to multiple connecting rods 61 at the same time so that the multiple connecting rods 61 form a whole. On the one hand, the contact area between the connecting rod 61 and the driving member 52 is increased, and on the other hand, the overall structural strength of the linkage member 6 is improved.

[0040] Reference Figure 1 and Figure 2 A flange is coaxially welded to one end of the introduction tube 1 away from the driving member 52 to facilitate fixed connection between the introduction tube 1 and the equipment.

[0041] The implementation principle of the cable entry device of the application is as follows: after the wire is inserted into the entry cylinder 1, the foaming filler inside the filler filling agent is extruded by the pressing plate 3, and the automatic and rapid sealing between the cable and the entry cylinder 1 is realized by self-foaming, which reduces the influence of the sealing property between the cable and the entry cylinder 1 on the uniformity of external pressure or stress, and improves the stability of the sealing effect.

[0042] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: all equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A cable entry device sealed with a rapid solidification type filler, comprising an entry tube (1), characterized in that: An installation groove (11) is provided on the inner side wall of the introduction tube (1), and a filler storage part (2) is provided in the installation groove (11). The filler storage part (2) is a shell structure, and is filled with a foaming filler. The foaming filler can foam and expand when in contact with air. A pressure plate (3) is provided on one side of the filler storage part (2), and the pressure plate (3) is slidably connected to the introduction tube (1). Sliding the pressure plate (3) can make the pressure plate (3) close to the filler storage part (2), and when the pressure plate (3) squeezes the filler storage part (2), the filler storage part (2) can be torn.

2. A cable entry device sealed with a rapid solidifying filler according to claim 1, characterized in that: The filler storage element (2) is an annular structure.

3. A cable entry device sealed with a rapid solidifying filler according to claim 2, characterized in that: A plurality of weak grooves (21) are evenly formed on the inner side wall of the filler storage member (2) along its circumference.

4. A cable entry device sealed with a rapid solidifying filler according to claim 2, characterized in that: A filling groove (12) communicating with the mounting groove (11) is provided on the inner side wall of the introduction cylinder (1).

5. A cable entry device sealed with a rapid solidifying filler according to claim 4, characterized in that: An observation hole (4) communicating with the filling groove (12) is provided on the outer side wall of the introduction cylinder (1).

6. The cable entry device sealed with a rapid solidifying filler according to claim 1, characterized in that: A limiting assembly (5) is provided at one end of the introduction cylinder (1), the limiting assembly (5) comprising an extrusion member (51) and a driving member (52), the driving member (52) being connected to the introduction cylinder (1) and being capable of moving in a direction parallel to the axis of the introduction cylinder (1); the extrusion member (51) comprising an extrusion portion (512) of an arc-shaped plate structure coaxially arranged with the introduction cylinder (1), the extrusion portion (512) being made of an elastic material, and the movement of the driving member (52) enabling the extrusion portion (512) to bend away from one end of the introduction cylinder (1) in a direction close to its own axis.

7. A cable entry device sealed with a rapid solidifying filler according to claim 6, characterized in that: The extrusion member (51) further comprises a connecting portion (511), the connecting portion (511) being a circular ring structure, the connecting portion (511) being coaxially arranged with the introduction cylinder (1), and the driving member (52) being threadedly sleeved on the connecting portion (511).

8. The cable entry device sealed with a rapid solidifying filler according to claim 7, characterized in that: The pressure plate (3) is located on a side of the filler storage member (2) close to the driving member (52), and a linkage member (6) is provided between the driving member (52) and the pressure plate (3). The linkage member (6) includes a connecting rod (61) slidingly provided on the introduction cylinder (1) in a direction parallel to the sliding direction of the driving member (52). One end of the connecting rod (61) is fixed on the pressure plate (3), and the other end extends in a direction close to the driving member (52). The movement of the driving member (52) in a direction close to the introduction cylinder (1) can drive the connecting rod (61) to move in a direction close to the filler storage member (2).

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