A multi-purpose optoelectronic integrated optical fiber composite power cable distribution box

Abstract

The present invention relates to the technical field of cable installation, and particularly relates to a multi-purpose optoelectronic integrated optical fiber composite power cable distribution box, which comprises a box body, an inlet and an air hole opened at the bottom of the box body. An installation ring is fixedly installed at the top of the inlet, and a deformable annular airbag is installed in the installation ring. An installation frame is fixedly installed in the box body and is located directly above the air hole. The bottom of the installation frame has a receiving cavity, and a sealing member matching the air hole is slidably installed in the receiving cavity. A liquid guide pipe is fixedly installed between the receiving cavity and the annular airbag. A liquid injection assembly is also fixedly installed in the box body. A liquid injection pipe is fixedly installed between the output end of the liquid injection assembly and the receiving cavity. A liquid level sensor electrically connected to the liquid injection assembly is fixedly installed at the bottom of the box body.

Description

Technical Field

[0001] The present invention relates to the technical field of cable installation, and particularly relates to a multi-purpose optoelectronic integrated optical fiber composite power cable distribution box. Background Art

[0002] Cable distribution boxes are divided into two major categories according to their electrical composition: one is without any switch equipment, and there are only accessories for processing and connecting cable ends in the box. The structure is relatively simple, the volume is small, and the function is relatively single, which can be called an ordinary distribution box; the other is that there are not only the accessories of the ordinary distribution box in the box, but also one or more switch equipment. Its structure is more complex, the volume is larger, there are more connecting devices, the manufacturing technology is more difficult, and the cost is higher, which can be called an advanced distribution box.

[0003] The main function of the cable distribution box is to branch or transfer cables. On a relatively long line, multiple small-area cables often cause waste of cable use. Therefore, when leading out to the electrical load, a main large cable is often used for leading out, and then when approaching the load, a cable distribution box is used to divide the main cable into several small-area cables, and the small-area cables are connected to the load. Such a wiring method is widely used in scenarios such as street lamp power supply and small user power supply in urban power grids.

[0004] The existing cable distribution box is provided with an inlet at the bottom for the main cable to enter the interior of the distribution box, and a large number of air holes are also provided at the bottom for heat dissipation. When encountering rainy weather, an air curtain provided at the air holes on the side of the distribution box can prevent rainwater from entering the distribution box, but the air holes at the bottom of the distribution box cannot be blocked. When the water level rises relatively high, rainwater can enter the distribution box through the air holes and the inlet, posing a safety hazard.

[0005] The above information disclosed in the background art section is only used to enhance the understanding of the background of the present disclosure, and therefore it may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0006] The object of the present invention is to design a structure such that when the water level rises relatively high, both the air holes and the inlet will automatically form a seal to prevent rainwater from entering the distribution box through the air holes and the inlet, so as to solve the above deficiencies in the technology.

[0007] To achieve the above object, the present invention provides the following technical solution: A multi-purpose optoelectronic integrated optical fiber composite power cable distribution box, including a box body, as well as an inlet and an air hole opened at the bottom of the box body. An installation ring is fixedly installed at the top of the inlet. An deformable annular airbag is installed in the installation ring. An installation frame is fixedly installed in the box body directly above the air hole. The bottom of the installation frame has a receiving cavity. A sealing member matching the air hole is slidably installed in the receiving cavity. A liquid guide pipe is fixedly installed between the receiving cavity and the annular airbag. A liquid injection assembly is also fixedly installed in the box body. A liquid injection pipe is fixedly installed between the output end of the liquid injection assembly and the receiving cavity. A liquid level sensor electrically connected to the liquid injection assembly is fixedly installed at the bottom of the box body;

[0008] The optical fiber cable enters the box body through the inlet and the installation ring for installation. The liquid injection assembly injects liquid into the annular airbag and the receiving cavity, so that the sealing member is inserted into the air hole while the annular airbag expands. The expanded annular airbag contacts the surface of the installation ring and the optical fiber cable, sealing the inlet and the air hole.

[0009] Preferably, the installation ring includes an annular column fixedly installed at the top of the inlet, and a receiving groove opened on the inner peripheral surface of the annular column. The annular airbag is installed in the receiving groove. The inner diameter of the annular column is the same as the diameter of the inlet.

[0010] Preferably, one side of the outer wall of the annular airbag is fixedly connected to the inner wall of the receiving groove. When the annular airbag is not expanded, the inner diameter of the annular airbag is larger than the diameter of the inlet. When the annular airbag expands, the outer wall of the annular airbag fits with the inner wall of the receiving groove and the outer wall of the optical fiber cable respectively.

[0011] Preferably, the number of the air holes is set to multiple groups, each group having a plurality of equally spaced air holes. The number of the installation frames is the same as the number of groups of the air holes. The sealing member includes a sliding rod vertically slidably connected to the receiving cavity, and a plurality of rubber strips fixedly installed at the bottom of the sliding rod and having an interference fit with the air holes.

[0012] Preferably, rounded corners are opened at the top and bottom of the air hole, and rounded corners are opened around the bottom of the rubber strip.

[0013] Preferably, a placement hole is opened at the top of the sliding rod. A spring is provided in the placement hole. The two ends of the spring are fixedly connected to the sliding rod and the installation frame respectively.

[0014] Preferably, the liquid injection assembly includes a hydraulic cylinder fixedly installed in the box body, a piston fixedly installed at the end of the output shaft of the hydraulic cylinder, and a liquid storage pipe slidably connected to the outside of the piston. The liquid storage pipe is fixedly connected and communicated with the liquid injection pipe. A liquid medium is provided in the liquid storage pipe.

[0015] Preferably, a rigid ring is provided inside the annular airbag. When the annular airbag is not inflated, the annular airbag adheres to the outer wall of the rigid ring.

[0016] In the above technical solution, the technical effects and advantages provided by the present invention are as follows:

[0017] After the liquid level sensor of the present invention detects that the water level reaches the height that needs to be sealed, it will automatically start the liquid injection device to inject the liquid medium into the annular airbag and the accommodation cavity, so as to control the interference fit sealing between the seal and the air hole, causing the annular airbag to expand and closely fit the surface of the cable passing through the cable inlet, thereby sealing the cable inlet and the air hole to prevent rainwater from entering the box body and causing potential safety hazards.

[0018] After the cable passes through the cable inlet and the mounting ring is installed in the box body, the present invention can also only start the hydraulic cylinder to inject part of the liquid medium into the annular airbag, causing the annular airbag to expand and squeeze the cable, thereby clamping and fixing the cable to prevent loosening. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a perspective view of the present invention;

[0022] Figure 3 It is a schematic diagram of the internal structure of the box body of the present invention;

[0023] Figure 4 It is a schematic diagram of the connection between the mounting ring and the mounting frame of the present invention;

[0024] Figure 5 It is a schematic diagram of the connection between the liquid injection assembly and the liquid injection pipe of the present invention;

[0025] Figure 6 It is a schematic diagram of the internal structure of the mounting frame of the present invention;

[0026] Figure 7 It is a schematic diagram of the internal structure of the mounting ring of the present invention.

[0027] Explanation of the reference numerals:

[0028] 1. Box body; 2. Inlet; 3. Air hole; 4. Mounting ring; 4a. Annular column; 4b. Receiving groove; 5. Annular airbag; 6. Mounting bracket; 7. Receiving cavity; 8. Sealing member; 8a. Slide bar; 8b. Rubber strip; 9. Liquid guide pipe; 10. Liquid injection assembly; 10a. Hydraulic cylinder; 10b. Piston; 10c. Liquid storage pipe; 11. Liquid injection pipe; 12. Liquid level sensor; 13. Placing hole; 14. Spring; 15. Hard ring. Detailed implementation manner

[0029] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0030] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0031] The present invention provides a Figure 1-7 multi-purpose optoelectronic integrated optical fiber composite power cable distribution box as shown in Figure 1-3 , including a box body 1, an inlet 2 and an air hole 3 opened at the bottom of the box body 1. The number of air holes 3 is set to be multiple groups, and each group has a plurality of equally spaced air holes 3. An installation ring 4 is fixedly installed at the top of the inlet 2. As Figure 7 shown, the installation ring 4 includes an annular column 4a fixedly installed at the top of the inlet 2, and a receiving groove 4b opened on the inner peripheral surface of the annular column 4a. A deformable annular airbag 5 is installed in the receiving groove 4b. One side of the outer wall of the annular airbag 5 is fixedly connected to the inner wall of the receiving groove 4b. A hard ring 15 is installed in the annular airbag 5. When the annular airbag 5 is not inflated, the inner diameter of the annular airbag 5 is larger than the diameter of the inlet 2, and the annular airbag 5 is attached to the outer wall of the hard ring 15. When the annular airbag 5 is inflated, the outer wall of the annular airbag 5 is respectively in contact with the inner wall of the receiving groove 4b and the outer wall of the optical fiber cable. A mounting bracket 6 is fixedly installed in the box body 1 directly above the air hole 3. The number of mounting brackets 6 is the same as the number of groups of air holes 3. The bottom of the mounting bracket 6 has a receiving cavity 7. A sealing member 8 matching the air hole 3 is slidably installed in the receiving cavity 7. The sealing member 8 includes a slide bar 8a slidably connected vertically to the receiving cavity 7, and a plurality of rubber strips 8b fixedly installed at the bottom of the slide bar 8a and in interference fit with the air hole 3. Rounded corners are opened at the top and bottom of the air hole 3, and rounded corners are opened around the bottom of the rubber strip 8b. A liquid guide pipe 9 is fixedly installed between the receiving cavity 7 and the annular airbag 5. A liquid injection assembly 10 is also fixedly installed in the box body 1. As Figure 6As shown in the figure, the liquid injection assembly 10 includes a hydraulic cylinder 10a fixedly installed in the box body 1, a piston 10b fixedly installed at the end of the output shaft of the hydraulic cylinder 10a, and a liquid storage pipe 10c slidably connected to the outside of the piston 10b. The liquid storage pipe 10c is fixedly connected and communicated with the liquid injection pipe 11. There is a liquid medium in the liquid storage pipe 10c. A liquid injection pipe 11 is fixedly installed between the output end of the liquid injection assembly 10 and the accommodation cavity 7. A liquid level sensor 12 electrically connected to the liquid injection assembly 10 is fixedly installed at the bottom of the box body 1. A placement hole 13 is opened at the top of the sliding rod 8a. There is a spring 14 in the placement hole 13. The two ends of the spring 14 are fixedly connected to the sliding rod 8a and the mounting bracket 6 respectively. The elastic force of the spring 14 is greater than the elastic force when the annular airbag 5 returns to its original state. This makes it that when the liquid in the liquid injection pipe 11 enters the sliding rod 8a, it will be preferentially squeezed into the annular airbag 5. Only when the annular airbag 5 expands to a certain size, the sliding rod 8a will gradually slide down in the accommodation cavity 7;

[0032] The optical fiber composite power cable passes through the inlet 2 at the bottom of the box body 1, and at the same time passes through the mounting ring 4 and the annular airbag 5, and then is installed in the distribution box. When the water level rises, the liquid level sensor 12 detects whether the water level has reached the height required to close the inlet 2 and the air hole 3. If so, the hydraulic cylinder 10a is started. The output shaft of the hydraulic cylinder 10a extends to drive the piston 10b to press the liquid medium in the liquid storage pipe 10c into the liquid injection pipe 11, and then enters the accommodation cavity 7 at the bottom of the mounting bracket 6, thereby pressing the sliding rod 8a downward. The sliding rod 8a will drive the rubber strip 8b to insert into the corresponding air hole 3. Because both the top and bottom of the air hole 3 have rounded corners, and the bottom of the rubber strip 8b also has a rounded corner, when the rubber strip 8b is pressed into the air hole 3, although it is in interference fit with the air hole 3 to achieve sealing, it will not be scratched. When the sliding rod 8a contacts the inner cavity bottom surface of the box body 1, the rubber strip 8b is completely inserted into the air hole 3 and will not continue to descend;

[0033] When the liquid medium enters the accommodation cavity 7, it will also first enter the annular airbag 5 through the liquid guide pipe 9, and then completely press down the sliding rod 8a. When the annular airbag 5 is filled with the liquid medium, it will deform and expand, so that the annular airbag 5 no longer adheres to the outer wall of the hard ring 15, but gradually fits with the inner wall of the accommodation groove 4b and the outer wall of the optical fiber cable. Because of the shape of the accommodation groove 4b opened in the annular column 4a, after the annular airbag 5 fills the accommodation groove 4b, it will concentrate and expand and deform in the direction of the central axis of the accommodation groove 4b, thereby clamping the outer surface of the optical fiber cable. At this time, when the water level rises and floods the inlet 2 and the air hole 3, it cannot enter the box body 1 through the inlet 2 and the air hole 3, avoiding potential hazards caused by rainwater entering the distribution box;

[0034] We set the elastic force of the spring 14 to be greater than the elastic force when the annular airbag 5 returns to its original state. At this time, after the liquid medium enters the accommodation cavity 7, it will be squeezed into the liquid guide pipe 9 and then into the annular airbag 5. Only after the annular airbag 5 expands and deforms will it gradually accumulate in the accommodation cavity 7. Therefore, after passing the cable through the cable inlet 2 and the mounting ring 4, we can also first squeeze a part of the liquid medium into the annular airbag 5 to block the cable inlet 2 and clamp and fix the cable to prevent loosening.

[0035] It is important to note that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible (for example, changes in the dimensions, scales, structures, shapes and proportions of various components, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application.

Claims

1. A multi-purpose optoelectronic integrated optical fiber composite power cable distribution box, comprising a box body, and a line inlet and air hole opened at the bottom of the box body, characterized in that: A mounting ring is fixedly installed on the top of the inlet, a deformable annular airbag is installed in the mounting ring, a mounting frame located directly above the air hole is fixedly installed in the box, a receiving cavity is provided at the bottom of the mounting frame, a sealing member matching the air hole is slidably installed in the receiving cavity, a liquid guide tube is fixedly installed between the receiving cavity and the annular airbag, a liquid injection assembly is also fixedly installed in the box, a liquid injection tube is fixedly installed between the output end of the liquid injection assembly and the receiving cavity, and a liquid level sensor electrically connected to the liquid injection assembly is fixedly installed at the bottom of the box; The optical fiber cable is installed in the box through the cable inlet and the installation ring. Liquid is injected into the annular airbag and the accommodating cavity through the liquid injection component, so that the sealing member is inserted into the air hole and the annular airbag is expanded. The expanded annular airbag contacts the installation ring and the surface of the optical fiber cable to seal the cable inlet and the air hole. The sealing member comprises a sliding rod connected to the accommodating cavity in a vertical sliding manner, and a plurality of rubber strips fixedly mounted at the bottom of the sliding rod and interference-fitted with the air holes. A placement hole is opened at the top of the sliding rod, and a spring is arranged in the placement hole. The two ends of the spring are respectively fixedly connected to the sliding rod and the mounting frame. The elastic force of the spring is greater than the elastic force of the annular airbag when it returns to its original state. This makes the liquid in the injection tube preferentially squeezed into the annular airbag when it enters the sliding rod. Only when the annular airbag expands to a certain size will the sliding rod gradually slide down in the accommodating cavity. The injection assembly includes a hydraulic cylinder fixedly installed in the box body, a piston fixedly installed at the end of the hydraulic cylinder output shaft, and a liquid storage tube slidably connected to the outside of the piston. The liquid storage tube is fixedly connected and communicated with the injection tube, and there is liquid medium in the liquid storage tube.

2. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 1, characterized in that: The mounting ring includes an annular column fixedly mounted on the top of the line inlet, and a receiving groove opened on the inner circumference of the annular column. The annular airbag is installed in the receiving groove. The inner diameter of the annular column is the same as the diameter of the line inlet.

3. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 2, characterized in that: One side of the outer wall of the annular airbag is fixedly connected to the inner wall of the accommodating groove. When the annular airbag is not expanded, the inner diameter of the annular airbag is larger than the diameter of the cable inlet. When the annular airbag is expanded, the outer wall of the annular airbag fits the inner wall of the accommodating groove and the outer wall of the optical fiber cable respectively.

4. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 3, characterized in that: The number of the air holes is set to be a plurality of groups, each group has a plurality of air holes distributed at equal intervals, and the number of the mounting frames is the same as the number of the air hole groups.

5. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 4, characterized in that: The top and bottom of the air hole are both rounded, and the bottom of the rubber strip is rounded around.

6. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 1, characterized in that: The annular airbag has a hard ring inside. When the annular airbag is not expanded, the annular airbag is attached to the outer wall of the hard ring.

Images