Inlet cable fixing device

Abstract

The utility model relates to the field of electrical construction, and discloses an incoming cable fixing device, which is characterized in that the outer side wall of a connecting frame is provided with a mounting assembly; a vertical sliding groove is formed in the upper end of the connecting frame; a through hole is formed in the lower end of the connecting frame; the first channel steel and the second channel steel are oppositely arranged up and down, a first positioning assembly is installed on the back of the first channel steel, and the first positioning assembly is slidably arranged in the sliding groove; a second positioning assembly is installed on the back of the second steel channel and clamped in the through hole. And a pressure spring is arranged between the first channel steel and the second channel steel. According to the utility model, the special connection mode of the connecting rods and the connecting frame in the positioning assembly enables the upper group of connecting rods to drive the channel steel to move downwards along the chute of the connecting frame when the cable is stressed, thereby effectively relieving the tensile force of the cable, and preventing the tensile force from being directly transmitted to the wiring terminal. When the tensile force of the cable is too large, the pressure spring between the channel steel can further play a buffering role and absorb redundant tensile force energy.

Description

Technical Field

[0001] This utility model relates to the field of electrical construction, and in particular to an incoming cable fixing device. Background Technology

[0002] Incoming cables are cables used to bring power, signals, or data from an external supply source into the interior of a building, facility, or equipment. They are an important component of power and communication systems and are typically used to connect different electrical devices, distribution boxes, or network equipment.

[0003] In power systems, especially in the DC cable connection parts involving string inverters or DC combiner boxes, securing the incoming cables is crucial for the stable operation of the entire system.

[0004] Currently, existing incoming cable fixing solutions have some shortcomings: On the one hand, in terms of protecting the terminals, many solutions fail to fully consider the impact of cable tension on the terminals and lack effective tension relief measures. This leads to problems such as poor contact and breakage of the terminals due to excessive stress during long-term operation, reducing the reliability of the power system and increasing the frequency of equipment maintenance and replacement. On the other hand, some cable fixing devices have fixed structures and cannot be flexibly adjusted according to the actual installation environment and cable stress conditions. They cannot be conveniently installed under string inverters or DC combiner boxes at different angles and positions. Therefore, an incoming cable fixing device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an incoming cable fixing device, which aims to improve the lack of effective tension relief measures in the prior art, which leads to poor contact and breakage of the terminal block due to excessive force during long-term operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an incoming cable fixing device, comprising a connecting frame, a mounting assembly, a first positioning assembly, a second positioning assembly, a first channel steel, a second channel steel, and a pressure spring;

[0007] The mounting assembly is provided on the outer sidewall of the connecting frame; a vertical sliding groove is formed at the upper end of the connecting frame; a through hole is formed at the lower end of the connecting frame; the first channel steel and the second channel steel are arranged vertically opposite each other, the first positioning assembly is mounted on the back of the first channel steel, and the first positioning assembly is slidably disposed in the sliding groove; the second positioning assembly is mounted on the back of the second channel steel, and the second positioning assembly is engaged in the through hole; a pressure spring is provided between the first channel steel and the second channel steel.

[0008] As a further description of the above technical solution: the mounting assembly includes a fixing base and mounting feet; the fixing base is fixedly connected to the outer sidewall of the connecting frame; the inner sidewall of the fixing base is rotatably connected to the mounting feet; the surface of the mounting feet is provided with mounting grooves for alignment with the mounting holes of the string inverter and the DC combiner box.

[0009] As a further description of the above technical solution: the mounting assembly also includes a limiting block, a return spring, and a slider;

[0010] The inner wall of the mounting foot is elastically connected to the limiting block via the return spring, and the outer sidewall of the limiting block is fixedly connected to the slider.

[0011] Under the action of the return spring, the limiting block is pressed against the inner wall of the fixed seat, thereby fixing the mounting foot in place after it has rotated relative to the fixed seat; pressing the slider causes the limiting block to compress the return spring, thereby disengaging the limiting block from the fixed seat and allowing the mounting foot to rotate relative to the fixed seat.

[0012] As a further description of the above technical solution: one end of the reset spring is fixedly connected to the outer wall of the limiting block, and the other end of the reset spring is fixedly connected to the inner wall of the mounting foot.

[0013] As a further description of the above technical solution: the limiting block passes through and is slidably connected to the side wall of the mounting foot, and the slider passes through and is slidably connected to the inner wall of the top of the mounting foot.

[0014] As a further description of the above technical solution: the side wall of the fixed seat is provided with a limiting groove, and the end of the limiting block is inserted into the inner wall of the limiting groove.

[0015] As a further description of the above technical solution: the first positioning component and the second positioning component have the same structure, both including a connecting rod, a pressing block, a wedge block and a limiting spring;

[0016] The rear end of the connecting rod is fixedly connected to the outer wall of the corresponding channel steel; the inner wall of the connecting rod is slidably connected to the pressing block; the inner side wall of the pressing block contacts two sets of symmetrically arranged wedges, and the limiting spring is connected between the two sets of wedges; under the thrust of the limiting spring, the two sets of wedges extend to the outside of the connecting rod and contact the surface of the rear end of the connecting frame; when the pressing block is pressed and moves inward, the conical groove on the inner side of the pressing block squeezes the two sets of wedges, causing the two sets of wedges to move closer to each other, compressing the limiting spring, thereby causing the two sets of wedges to retract into the interior of the connecting rod.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this utility model, the special connection method between the connecting rod and the connecting frame in the positioning component allows the first positioning component above to drive the first channel steel to move downward along the slide groove of the connecting frame when the cable is under stress, effectively relieving the cable tension and preventing the tension from being directly transmitted to the terminal. When the cable tension is too large, the pressure spring between the channel steels can further play a buffering role, absorbing excess tension energy.

[0019] 2. In this utility model, the angle of the mounting feet can be adjusted by pulling the limiting block with the slider in the mounting component, so that it perfectly matches the mounting hole position of the string inverter or DC combiner box. Then, the limiting block and the limiting groove of the fixing seat are used to achieve multi-angle fixing. This flexible installation method enables the device to adapt to different models and installation layouts of equipment, and can be easily installed in various complex power engineering environments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an inlet cable fixing device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the overall rear view structure of an inlet cable fixing device proposed in this utility model;

[0022] Figure 3 This is a partial cross-sectional view of the positioning component of the cable fixing device proposed in this utility model.

[0023] Figure 4 This utility model proposes an inlet cable fixing device. Figure 3 Enlarged structural diagram of section C;

[0024] Figure 5 This is a partial cross-sectional view of the installation components of an incoming cable fixing device proposed in this utility model.

[0025] Legend:

[0026] 1. Connecting frame; 2. Mounting assembly; 21. Fixing base; 22. Mounting foot; 23. Limiting block; 24. Return spring; 25. Sliding block; 3A. First positioning assembly; 3B. Second positioning assembly; 31. Connecting rod; 32. Press block; 33. Wedge block; 34. Limiting spring; 4A. First channel steel; 4B. Second channel steel; 5. Pressure spring. Detailed Implementation

[0027] 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.

[0028] Reference Figures 1-3 The present invention provides an embodiment of an incoming cable fixing device, characterized in that it includes a connecting frame 1, a mounting component 2, a first positioning component 3A, a second positioning component 3B, a first channel steel 4A, a second channel steel 4B, and a pressure spring 5;

[0029] A mounting component 2 is provided on the outer sidewall of the connecting frame 1; a vertical sliding groove is opened at the upper end of the connecting frame 1; a through hole is opened at the lower end of the connecting frame 1; a first channel steel 4A and a second channel steel 4B are arranged opposite each other, a first positioning component 3A is installed on the back of the first channel steel 4A, and the first positioning component 3A is slidably arranged in the sliding groove; a second positioning component 3B is installed on the back of the second channel steel 4B, and the second positioning component 3B is locked in the through hole; a pressure spring 5 is provided between the first channel steel 4A and the second channel steel 4B.

[0030] This utility model provides an incoming cable fixing device. A first channel steel 4A is detachably mounted on the surface of a connecting frame 1 via a first positioning component 3A, and a second channel steel 4B is detachably mounted on the surface via a second positioning component 3B. The connecting frame 1 serves as the main structure of the entire incoming cable fixing device, providing basic support and load-bearing capacity. Its surface is connected to other components via positioning components, providing a platform for the installation of the two channel steels. A pressure spring 5 contacts the first channel steel 4A and the second channel steel 4B. Circular cavities are formed on the corresponding surfaces of the first channel steel 4A and the second channel steel 4B, allowing the corresponding channel steels to be removed by disassembling the two sets of positioning components, thus enabling the replacement of the pressure spring 5. An installation component 2 is provided on the outer sidewall of the connecting frame 1.

[0031] Reference Figures 2-4 The first positioning component 3A and the second positioning component 3B have the same structure, both including a connecting rod 31, a pressing block 32, a wedge block 33 and a limiting spring 34;

[0032] The rear end of the connecting rod 31 is fixedly connected to the outer wall of the corresponding channel steel; the inner wall of the connecting rod 31 is slidably connected to the push block 32; the inner side wall of the push block 32 is in contact with two sets of symmetrically arranged wedges 33, and a limiting spring 34 is connected between the two sets of wedges 33; under the thrust of the limiting spring 34, the two sets of wedges 33 extend out of the connecting rod 31 and contact the surface of the rear end of the connecting frame 1; when the push block 32 is pressed and moves inward, the conical groove on the inner side of the push block 32 squeezes the two sets of wedges 33, causing the two sets of wedges 33 to move closer to each other, compressing the limiting spring 34, thereby causing the two sets of wedges 33 to retract into the interior of the connecting rod 31.

[0033] Therefore, the outer wall of the connecting rod 31 of the upper first positioning component 3A is slidably connected to the inner wall of the slide groove of the connecting frame 1. The lower end of the connecting frame 1 has a through hole. The outer wall of the connecting rod 31 of the lower second positioning component 3B is in contact with the inner wall of the through hole of the connecting frame 1. Therefore, when the cable is wound around the surface of the first channel steel 4A and the second channel steel 4B, the cable can be pulled to drive the upper connecting rod 31 to move downward along the slide groove, thereby driving the first channel steel 4A to move downward. This can relieve the tension when the cable is pulled and prevent the other end of the connecting terminal from breaking. The rear end of the connecting rod 31 is fixedly connected to the outer wall of the corresponding channel steel. The wedge 33 penetrates and is slidably connected to the side wall of the connecting rod 31. The outer wall of the wedge 33 is in contact with the surface of the rear end of the connecting frame 1. The contact between the two can fix the connecting rod 31 to the position of the corresponding channel steel on the inner wall of the connecting frame 1, thereby fixing the channel steel. The inner wall of the connecting rod 31 is slidably connected to a push block 32. The inner side wall of the push block 32 contacts two sets of wedges 33. The inner side of the push block 32 is provided with a conical groove. By pressing the push block 32, the two sets of wedges 33 can be brought together and thus disengaged from the side wall of the connecting frame 1, so as to facilitate the removal of the connecting rod 31 from the inner wall of the connecting frame 1. The two sets of wedges 33 are elastically connected by a limiting spring 34. By setting the limiting spring 34 between the two sets of wedges 33, the position of the two sets of wedges 33 after being pressed and moved by the push block 32 can be automatically reset.

[0034] Reference Figures 3-4 The mounting assembly 2 includes a mounting base 21 and mounting feet 22; the mounting base 21 is fixedly connected to the outer side wall of the connecting frame 1; the inner side wall of the mounting base 21 is rotatably connected to the mounting feet 22; the surface of the mounting feet 22 is provided with mounting grooves for aligning with the mounting holes of the string inverter and the DC combiner box.

[0035] Furthermore, the mounting assembly 2 also includes a limiting block 23, a return spring 24, and a slider 25;

[0036] The inner wall of the mounting foot 22 is elastically connected to the limiting block 23 via a return spring 24, and the outer side wall of the limiting block 23 is fixedly connected to the slider 25; wherein, one end of the return spring 24 is fixedly connected to the outer wall of the limiting block 23, and the other end of the return spring 24 is fixedly connected to the inner wall of the mounting foot 22. The limiting block 23 passes through and is slidably connected to the side wall of the mounting foot 22, and the slider 25 passes through and is slidably connected to the inner wall of the top of the mounting foot 22.

[0037] Under the action of the return spring 24, the limiting block 23 is pressed against the inner wall of the fixed seat 21, so that the mounting foot 22 is fixed after rotating relative to the fixed seat 21; pressing the slider 25 drives the limiting block 23 to compress the return spring 24, so that the limiting block 23 is disengaged from the fixed seat 21, and the mounting foot 22 can rotate relative to the fixed seat 21.

[0038] Furthermore, a limiting groove is provided on the side wall of the fixed base 21, and the end of the limiting block 23 is inserted into the inner wall of the limiting groove.

[0039] As a specific structure, see [reference] Figure 5 The mounting assembly 2 includes a fixed base 21, which is fixedly connected to the outer side wall of the connecting frame 1. A limiting block 23 is slidably connected to the side wall of the mounting foot 22 through the fixed base 21. A slider 25 is slidably connected to the inner wall of the top of the mounting foot 22 through the fixed base 21. The mounting foot 22 is rotatably connected to the inner side wall of the fixed base 21. The mounting foot 22 can rotate within the inner wall of the fixed base 21, thereby adjusting the angle of the mounting groove on the surface of the mounting foot 22 to adjust its position relative to the mounting holes of the string inverter and the DC combiner box. The inner wall of the mounting foot 22 is elastically connected to the limiting block 23 via a return spring 24. One end of the return spring 24 is fixedly connected to the outer wall of the limiting block 23, and the other end of the return spring 24 is fixedly connected to the mounting foot 22. The function of the return spring 24 on the inner wall of the mounting foot 22 is to automatically reset the position of the limiting block 23 after the slider 25 pulls it. At the same time, the initial position of the limiting block 23 is elastically supported by the return spring 24. One side of its surface is on the inner wall of the fixing seat 21, and the other side is on the inner wall of the mounting foot 22. Thus, the positions of the fixing seat 21 and the mounting foot 22 can be fixed in series. The side wall of the fixing seat 21 is provided with a limiting groove. The end of the limiting block 23 is inserted into the inner wall of the limiting groove. The insertion between the two allows the mounting foot 22 to be adjusted at different angles on the inner wall of the fixing seat 21 according to different installation positions and then fixed at multiple angles. The slider 25 is fixedly connected to the outer side wall of the limiting block 23.

[0040] Working principle: When using this incoming cable fixing device, first adjust the angle of the mounting foot 22 according to the mounting hole position of the string inverter or DC combiner box, and fix the device directly below the equipment using the mounting component 2. By pulling the slider 25, the slider 25 drives the limiting block 23 to move inside the side wall of the mounting foot 22, compressing the return spring 24, so that the limiting block 23 is fully inserted into the inside of the mounting foot 22 and disengaged from the limiting groove on the side wall of the fixing seat 21. At this time, the mounting foot 22 can rotate freely within the fixing seat 21 to adjust the angle. After adjusting the angle, release the slider 25, and the limiting block 23 returns to its original shape under the elastic action of the return spring 24. Its end is inserted into the limiting groove on the side wall of the fixing seat 21, fixing the mounting foot 22 at this angle position. This completes the installation and angle adjustment of the device under the string inverter or DC combiner box, ensuring that the device can be stably fixed under the equipment and adapt to the mounting hole layout of different equipment.

[0041] When installing the two sets of channel steel onto the connecting frame 1 using the positioning components, first insert the connecting rod 31 of the lower second positioning component 3B into the through hole at the lower end of the connecting frame 1, and then insert the connecting rod 31 of the upper first positioning component 3A into the sliding groove at the upper end of the connecting frame 1. At this time, due to the inclined surface of the wedge block 33, the connecting rod 31 can be directly pushed into the inner wall of the connecting frame 1, thereby squeezing the inclined surfaces of the two sets of wedge blocks 33, allowing the wedge block 33 to move on the inner wall of the connecting rod 31, and under the action of the limiting spring 34, it is in the initial position, with its outer wall in contact with the rear end surface of the connecting frame 1, restricting the movement of the connecting rod 31, thereby fixing the channel steel in the corresponding position on the connecting frame 1, and completing the installation of the channel steel. After the cable is wound around the surface of the two sets of channel steels, when the cable is subjected to tension, such as when the cable is subjected to tension due to external factors such as temperature changes or equipment displacement, the cable will drive the upper connecting rod 31 to move downward along the slide groove of the connecting frame 1. Since the upper and lower connecting rods 31 are fixedly connected to the first channel steel 4A and the second channel steel 4B respectively, the upper first channel steel 4A will also move downward a certain distance. During this process, the pressure spring 5 is compressed, absorbing the tension energy of the cable, making the cable loose, thereby relieving the tension on the connection terminal at the other end of the cable, preventing the connection terminal from breaking, and ensuring the stability and reliability of the cable connection.

[0042] When it is necessary to disassemble the channel steel, in order to replace the pressure spring 5, press the button 32. The button 32 moves inward, and the conical groove on its inner side squeezes the two sets of wedges 33, so that the two sets of wedges 33 come closer to each other, compressing the limit spring 34. The wedges 33 disengage from the contact with the rear end surface of the connecting frame 1. At this time, the connecting rod 31 is no longer fixed and can be pulled out from the connecting frame 1, and then the corresponding channel steel can be taken out. After releasing the button 32, the wedges 33 return to the initial position under the action of the limit spring 34, ready for the next installation operation.

[0043] 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. An incoming cable fixture, characterized by: It comprises a connecting frame (1), a mounting assembly (2), a first positioning assembly (3A), a second positioning assembly (3B), a first channel steel (4A), a second channel steel (4B) and a pressure spring (5). The outer side wall of the connecting frame (1) is provided with the mounting assembly (2); the upper end of the connecting frame (1) is provided with a vertical sliding groove; the lower end of the connecting frame (1) is provided with a through hole; the first channel steel (4A) and the second channel steel (4B) are arranged oppositely; the back of the first channel steel (4A) is provided with the first positioning assembly (3A), and the first positioning assembly (3A) is slidably arranged in the sliding groove; the back of the second channel steel (4B) is provided with the second positioning assembly (3B), and the second positioning assembly (3B) is clamped in the through hole; the pressure spring (5) is arranged between the first channel steel (4A) and the second channel steel (4B).

2. A service cable securing device according to claim 1, wherein: The mounting assembly (2) comprises a fixed seat (21) and a mounting leg (22); the fixed seat (21) is fixedly connected to the outer side wall of the connecting frame (1); the inner side wall of the fixed seat (21) is rotatably connected to the mounting leg (22); the surface of the mounting leg (22) is provided with a mounting groove for aligning with the mounting hole of the string inverter and the DC bus box.

3. A service cable securing device according to claim 2, wherein: The mounting assembly (2) further comprises a limiting block (23), a reset spring (24) and a sliding block (25). The inner wall of the mounting leg (22) is elastically connected to the limiting block (23) through the reset spring (24), and the outer side wall of the limiting block (23) is fixedly connected to the sliding block (25). Under the action of the reset spring (24), the limiting block (23) is abutted against the inner wall of the fixed seat (21), so as to fix the mounting leg (22) after being rotated to the position relative to the fixed seat (21); the sliding block (25) is pressed, the limiting block (23) is compressed, and the reset spring (24) is compressed, so that the limiting block (23) is separated from the fixed seat (21), and the mounting leg (22) is rotatable relative to the fixed seat (21).

4. A service cable securing device according to claim 3, wherein: One end of the reset spring (24) is fixedly connected to the outer wall of the limiting block (23), and the other end of the reset spring (24) is fixedly connected to the inner wall of the mounting leg (22).

5. A drop cable securing device according to claim 3, wherein: The limiting block (23) is penetratingly and slidably connected to the side wall of the mounting leg (22), and the sliding block (25) is penetratingly and slidably connected to the inner wall of the top end of the mounting leg (22).

6. A drop cable securing device according to claim 3, wherein: The side wall of the fixed seat (21) is provided with a limiting groove, and the end of the limiting block (23) is inserted into the inner wall of the limiting groove.

7. A drop cable securing device according to claim 1, wherein: The first positioning assembly (3A) and the second positioning assembly (3B) are the same in structure, and each comprises a connecting rod (31), a pressing block (32), a wedge block (33) and a limiting spring (34). The rear end of the connecting rod (31) is fixedly connected with the outer wall of the corresponding channel steel; the inner wall of the connecting rod (31) penetrates and is slidingly connected with the pressing block (32); the inner side wall of the pressing block (32) is in contact with two groups of symmetrical wedge blocks (33), and the two groups of wedge blocks (33) are connected with the limiting spring (34); under the pushing force of the limiting spring (34), the two groups of wedge blocks (33) extend to the outside of the connecting rod (31) and are in contact with the surface of the rear end of the connecting frame (1); when the pressing block (32) is pressed and moves inward, the tapered groove in the inner side of the pressing block (32) extrudes the two groups of wedge blocks (33), so that the two groups of wedge blocks (33) are close to each other, the limiting spring (34) is compressed, and thus the two groups of wedge blocks (33) are retracted into the inside of the connecting rod (31).

Images