An engineering cable adapter

Abstract

The utility model relates to the field of electromechanical installation technology, and discloses an engineering cable adapter. The engineering cable adapter comprises: a shell, a limit tube is fixedly installed inside the shell, a connecting bolt is inserted and installed on the top of the shell, a connecting plate is fixedly installed on the lower end of the connecting bolt, a bearing is inserted and installed on the outer side of the connecting plate, a limit plate is embedded and installed on the outer side of the bearing, a spring is fixedly installed below the limit plate, the spring is in a contracted state, and the downward pressure applied by the spring to the insulating tube will cause the lower pressure plate to clamp the terminal. Due to the large contact area between the terminal and the lower pressure plate, the pressure on the terminal is reduced. Since the fixed tube is symmetrically installed at the front and rear ends of the shell through the thread mirror image, the limit ring is fixed to the outer side of the terminal. After the fixed tube is tightened, the position of the terminal will be limited by the limit ring and the fixed tube. This method can limit the position of the terminal while avoiding damage to the terminal due to excessive pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of electromechanical installation, in particular to an engineering cable adapter. Background Art

[0002] When carrying out the construction and maintenance of electromechanical engineering, it is necessary to use a cable adapter to connect two cables. After the cable is laid, in order to make it a continuous line, each section of the line must be connected as a whole. These connection points are called cable joints. Its main function is to make the line unobstructed, keep the cable sealed, and ensure the insulation level at the cable joint.

[0003] The existing referenceable Chinese utility model patent with announcement number CN218498808U discloses an engineering cable adapter for electromechanical installation, which belongs to the technical field of cable adapters, and includes an intermediate tube and end tubes symmetrically welded at both ends of the intermediate tube. A receiving cavity is formed in both end tubes, and both receiving cavities are communicated with the inner cavity of the intermediate tube. Knobs are provided on both sides of the outer wall of the end tubes, and movable grooves are formed in both sides of the receiving cavity toward the end tubes. Screws are threadedly installed at both ends of the end tubes, and the two screws extend into the two movable grooves respectively and are rotatably connected with an arc plate. The side wall of the arc plate fits the inner wall of the movable groove. The ends of the two screws away from the arc plate are fixedly welded with two knobs respectively. An air bag is also provided in the receiving cavity and is bonded and fixed to the inner wall thereof, and the air bag is filled with inert gas. The engineering cable adapter for electromechanical installation reduces the probability of outside air entering the inner cavity of the intermediate tube, which is conducive to ensuring that the cable joint is in a good and stable working state for a long time.

[0004] When the cable is connected, terminals are installed at the joints. Existing adapters generally fix the terminals by bolts. The bolts may loosen during use and affect the connection effect. The terminals are generally made of copper for their own conductivity. The overall strength of the terminals is low and the terminals may be damaged during the tightening of the bolts. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an engineering cable adapter, which has the advantages of preventing the connection effect from being affected by bolts and avoiding damage to the terminals due to excessive pressure, thereby solving the above technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an engineering cable adapter, comprising: a shell, a limit tube fixedly installed inside the shell, a connecting bolt inserted on the top of the shell, a connecting plate fixedly installed on the lower end of the connecting bolt, a bearing inserted on the outer side of the connecting plate, a limit plate embedded on the outer side of the bearing, a spring fixedly installed below the limit plate, an insulating tube inserted inside the limit tube, a lower pressure plate fixedly installed on the lower end of the insulating tube, a terminal movably installed inside the shell, a limit ring fixedly installed on the outer side of the terminal, and a fixed tube movably installed on the end of the terminal; the shell can limit the position of the limit tube.

[0009] As an optimal technical solution of the utility model, the limiting tube is installed on the bottom and top surfaces of the inner cavity of the shell symmetrically up and down and front and back with the center of the shell as a reference, and the connecting bolt is installed on the top and bottom of the shell symmetrically front and back and mirror-symmetrically up and down with the center of the shell as a reference, and the axis of the connecting bolt is consistent with the axis of the limiting tube; the limiting tube can limit the position of the spring.

[0010] As the preferred technical solution of the utility model, the connecting bolt forms a movable connection with the outer shell through its own threaded structure, the connecting plate forms a rotational connection with the limit plate through the bearing, and the connecting plate forms a sliding connection with the limit tube; the connecting bolt can adjust the position of the connecting plate.

[0011] As a preferred technical solution of the utility model, the spring is located inside the limiting tube, the upper end of the spring is fixedly connected to the bottom surface of the limiting plate, and the lower end of the spring is fixedly connected to the insulating tube; the spring can apply downward force to the insulating tube.

[0012] As a preferred technical solution of the utility model, the insulating tube is symmetrically installed above the lower pressure plate and is located inside the limiting tube. A sliding connection is formed between the insulating tube and the limiting tube; the insulating tube can prevent current from being conducted to the connecting bolt.

[0013] As a preferred technical solution of the utility model, the lower pressure plate is installed inside the shell in a mirror-symmetrical manner through an insulating tube, and slope structures are provided at the front and rear ends of the lower pressure plate; the lower pressure plate can facilitate clamping the terminal and conducting current.

[0014] As a preferred technical solution of the utility model, the outer diameter of the limit ring is smaller than the inner diameter of the tubular structure at the front and rear ends of the shell, a sliding connection is formed between the terminal and the fixed tube, a threaded structure is provided on the outside of the fixed tube, and the fixed tube is movably connected to the shell through the threaded structure; the fixed tube can prevent the terminal from slipping.

[0015] Compared with the prior art, the utility model provides an engineering cable adapter, which has the following beneficial effects:

[0016] 1. The utility model sets a limit plate, and the spring is located between the limit plate and the insulating tube. The upper end of the spring is fixedly connected to the limit plate, and the lower end is fixedly connected to the insulating tube. The connecting bolt forms a movable connection with the shell through its own threaded structure, and the position of the connecting plate can be adjusted by turning the connecting bolt, thereby adjusting the distance between the limit plate and the top of the insulating tube. During installation, the terminal is located between the lower pressure plate. During the process of tightening the connecting bolt, the connecting bolt will drive the connecting plate to move the limit plate downward, thereby squeezing the spring. The upper and lower ends of the spring will shrink after being compressed. When the connecting bolt cannot continue to rotate, the spring is at the shrinkage limit. The insulating tube is clamped to the terminal by the reaction force applied by the spring to the insulating tube during shrinkage. In this way, the connecting bolt does not directly contact the terminal, and the elastic force of the spring can still make the lower pressure plate close to the terminal when the connecting bolt is loose.

[0017] 2. The utility model sets a lower pressure plate, which is a copper plate. The lower pressure plate is installed inside the shell through the insulating tube in a mirror-symmetrical manner. After the connecting bolts are tightened, the spring is in a contracted state. The downward pressure exerted by the spring on the insulating tube will cause the lower pressure plate to clamp the terminal. Due to the large contact area between the terminal and the lower pressure plate, the pressure on the terminal is reduced. Since the fixed tube is installed at the front and rear ends of the shell in a mirror-symmetrical manner through threads, and the limit ring is fixed to the outside of the terminal, after the fixed tube is tightened, the position of the terminal will be limited by the limit ring and the fixed tube. This method can limit the position of the terminal while avoiding damage to the terminal due to excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure of the connecting bolt and the spring of the utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the terminal and the fixed tube of the utility model;

[0022] Among them: 1. Shell; 11. Limiting tube; 12. Connecting bolt; 13. Connecting plate; 14. Bearing; 15. Limiting plate; 16. Spring; 17. Insulating tube; 18. Lower pressure plate; 19. Terminal; 110. Limiting ring; 111. Fixing tube. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-Figure 4 In this embodiment, an engineering cable adapter includes: a shell 1, a limit tube 11 is fixedly installed inside the shell 1, a connecting bolt 12 is inserted and installed on the top of the shell 1, a connecting plate 13 is fixedly installed on the lower end of the connecting bolt 12, a bearing 14 is inserted and installed on the outer side of the connecting plate 13, a limit plate 15 is embedded and installed on the outer side of the bearing 14, a spring 16 is fixedly installed below the limit plate 15, an insulating tube 17 is inserted and installed inside the limit tube 11, a lower pressure plate 18 is fixedly installed at the lower end of the insulating tube 17, a terminal 19 is movably installed inside the shell 1, a limit ring 110 is fixedly installed on the outer side of the terminal 19, and a fixed tube 111 is movably installed at the end of the terminal 19.

[0027] The limiting tube 11 is installed on the bottom and top surfaces of the inner cavity of the shell 1 symmetrically up and down and front and back with the center of the shell 1 as the reference. The connecting bolt 12 is installed on the top and bottom of the shell 1 symmetrically front and back and mirror-symmetrically up and down with the center of the shell 1 as the reference. The axis of the connecting bolt 12 is consistent with the axis of the limiting tube 11.

[0028] The connecting bolt 12 is movably connected to the housing 1 through its own threaded structure, the connecting plate 13 is rotationally connected to the limiting plate 15 through the bearing 14, and the connecting plate 13 is slidably connected to the limiting tube 11.

[0029] The spring 16 is located inside the limiting tube 11 , the upper end of the spring 16 is fixedly connected to the bottom surface of the limiting plate 15 , and the lower end of the spring 16 is fixedly connected to the insulating tube 17 .

[0030] The insulating tube 17 is symmetrically installed above the lower pressing plate 18 and is located inside the limiting tube 11 . The insulating tube 17 and the limiting tube 11 are in sliding connection.

[0031] The lower pressing plate 18 is installed in the housing 1 in a mirror-symmetrical manner through the insulating tube 17 , and slope structures are provided at the front and rear ends of the lower pressing plate 18 .

[0032] The outer diameter of the limiting ring 110 is smaller than the inner diameter of the tubular structure at the front and rear ends of the shell 1. The terminal 19 and the fixed tube 111 form a sliding connection. A threaded structure is provided on the outer side of the fixed tube 111. The fixed tube 111 forms a movable connection with the shell 1 through the threaded structure.

[0033] Specifically, the housing 1 can limit the position of the limiting tube 11, the limiting tube 11 can limit the position of the spring 16, the connecting bolt 12 can adjust the position of the connecting plate 13, the connecting plate 13 can drive the limiting plate 15 to move, the bearing 14 can facilitate the rotation of the connecting plate 13, the limiting plate 15 can press down the spring 16, the spring 16 can apply a downward force to the insulating tube 17, the insulating tube 17 can prevent the current from being transmitted to the connecting bolt 12, the lower pressure plate 18 can facilitate the compression of the terminal 19 and conduct current, the terminal 19 can facilitate the connection of the engineering cable, the limiting ring 110 can limit the position of the terminal 19, and the fixing tube 111 can prevent the terminal 19 from slipping.

[0034] When in use, the spring 16 is located between the limit plate 15 and the insulating tube 17, the upper end of the spring 16 is fixedly connected to the limit plate 15, and the lower end is fixedly connected to the insulating tube 17. The connecting bolt 12 forms a movable connection with the housing 1 through its own threaded structure, and the position of the connecting plate 13 can be adjusted by turning the connecting bolt 12, thereby adjusting the distance between the limit plate 15 and the top of the insulating tube 17. During installation, the terminal 19 is located between the lower pressure plate 18. In the process of tightening the connecting bolt 12, the connecting bolt 12 will drive the connecting plate 13 to move the limit plate 15 downward, thereby squeezing the spring 16. The upper and lower ends of the spring 16 will shrink after being compressed. When the connecting bolt 12 can no longer rotate, the spring 16 is at the shrinkage limit. The insulating tube 17 is clamped to the terminal 19 by the reaction force exerted by the spring 16 on the insulating tube 17 when it shrinks. This method of connecting the bolt 12 It does not directly contact the terminal 19, and when the connecting bolt 12 is loose, the elastic force of the spring 16 can still make the lower pressure plate 18 close to the terminal 19. The lower pressure plate 18 is a copper plate, and the lower pressure plate 18 is installed inside the housing 1 in a mirror-symmetrical manner through the insulating tube 17. After the connecting bolt 12 is tightened, the spring 16 is in a contracted state, and the downward pressure applied by the spring 16 to the insulating tube 17 will cause the lower pressure plate 18 to clamp the terminal 19. Due to the large contact area between the terminal 19 and the lower pressure plate 18, the pressure on the terminal 19 is reduced. Since the fixing tube 111 is installed at the front and rear ends of the housing 1 in a mirror-symmetrical manner through the thread, the limit ring 110 is fixed to the outside of the terminal 19. After the fixing tube 111 is tightened, the position of the terminal 19 will be limited by the limit ring 110 and the fixing tube 111. This method can limit the position of the terminal 19 while avoiding damage to the terminal 19 due to excessive pressure.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engineering cable adapter, characterized in that: include: A housing (1), wherein a limit tube (11) is fixedly installed inside the housing (1), a connecting bolt (12) is inserted and installed on the top of the housing (1), a connecting plate (13) is fixedly installed on the lower end of the connecting bolt (12), a bearing (14) is inserted and installed on the outer side of the connecting plate (13), a limit plate (15) is embedded and installed on the outer side of the bearing (14), a spring (16) is fixedly installed below the limit plate (15), an insulating tube (17) is inserted and installed inside the limit tube (11), a lower pressure plate (18) is fixedly installed at the lower end of the insulating tube (17), a terminal (19) is movably installed inside the housing (1), a limit ring (110) is fixedly installed on the outer side of the terminal (19), and a fixed tube (111) is movably installed at the end of the terminal (19).

2. The engineering cable adapter according to claim 1, characterized in that: The limiting tube (11) is installed on the bottom surface and the top surface of the inner cavity of the outer shell (1) symmetrically in the vertical direction and the front and back direction with the center of the outer shell (1) as the reference, and the connecting bolt (12) is installed on the top and the bottom of the outer shell (1) symmetrically in the front and back direction and mirror-symmetrically in the vertical direction with the center of the outer shell (1) as the reference, and the axis of the connecting bolt (12) is consistent with the axis of the limiting tube (11).

3. The engineering cable adapter according to claim 1, characterized in that: The connecting bolt (12) is movably connected to the housing (1) through its own threaded structure, the connecting plate (13) is rotationally connected to the limiting plate (15) through the bearing (14), and the connecting plate (13) is slidably connected to the limiting tube (11).

4. The engineering cable adapter according to claim 1, characterized in that: The spring (16) is located inside the limiting tube (11), the upper end of the spring (16) is fixedly connected to the bottom surface of the limiting plate (15), and the lower end of the spring (16) is fixedly connected to the insulating tube (17).

5. The engineering cable adapter according to claim 1, characterized in that: The insulating tube (17) is symmetrically installed above the lower pressing plate (18) and is located inside the limiting tube (11). The insulating tube (17) and the limiting tube (11) are slidably connected.

6. The engineering cable adapter according to claim 1, characterized in that: The lower pressing plate (18) is installed in the interior of the housing (1) in a mirror-symmetrical manner through the insulating tube (17), and the front and rear ends of the lower pressing plate (18) are provided with slope structures.

7. The engineering cable adapter according to claim 1, characterized in that: The outer diameter of the limiting ring (110) is smaller than the inner diameter of the tubular structure at the front and rear ends of the housing (1); a sliding connection is formed between the terminal (19) and the fixed tube (111); a threaded structure is provided on the outer side of the fixed tube (111); and the fixed tube (111) is movably connected to the housing (1) via the threaded structure.

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