Switch cabinet cable head limiting device

Abstract

The utility model relates to the technical field of cable head limiting, in particular to a switch cabinet cable head limiting device which comprises an installation plate, the installation plate is of a strip-shaped structure, a plurality of power-on interfaces are distributed on the surface of the installation plate in a penetrating mode, the connection positions of the power-on interfaces and the installation plate are fixed through screws, and one end of each power-on interface is inserted into a connector in a butt joint mode. The other end of the connector is electrified and provided with a cable. After the connector of the cable is connected with the power-on interface in an inserted mode, in order to avoid the situation that the connector is disengaged due to pulling, the limiting pin is pulled firstly and can move upwards through the stretching effect of the spring, the connector and the power-on interface are inserted and connected in a butt joint mode, the position of the pin base is adjusted to correspond to the position of the limiting pin, and the limiting pin is reset through the reset effect of the spring. Therefore, the limiting, protecting and anti-falling effects when the joint is inserted into the power-on interface can be realized.

Description

Technical Field

[0001] This utility model relates to the field of cable head limiting technology, and in particular to a cable head limiting device for switchgear. Background Technology

[0002] Switchgear cable terminations are cable ends installed inside switchgear, used to connect cables to electrical equipment within the switchgear. Switchgear cable terminations play a crucial role in power systems, ensuring a safe, stable, and efficient connection between cables and switchgear.

[0003] Switchgear cable heads are typically manufactured using high-quality insulating materials, possessing excellent insulation properties to prevent current leakage and electric shock. They also typically have good sealing properties to prevent the influence of external environmental factors such as dust and moisture on the cables and electrical equipment. Switchgear cable heads are usually designed with structures that facilitate installation, such as detachable connectors and adjustable supports, making it convenient for connecting and maintaining cables and electrical equipment. For example, existing Chinese patent publication number "CN208127855U" provides a cable connector for switchgear, belonging to the field of insulated switchgear technology. It solves the problems of inconvenient connection of existing cable connectors. This switchgear cable connector includes a block-shaped connecting plate. A main connector is threadedly connected to the center of the bottom surface of the connecting plate, and several branch connectors are threadedly connected to the top surface of the connecting plate. The outer ends of the branch connectors have several clamping petals that converge towards the center, and the outer circumferential surfaces of the outer ends of the branch connectors have external threads. A connecting post coaxially arranged with the main connector passes through it. The inner end of the connecting post has an outwardly folded flange, and the outer end of the connecting post has an axially opened connecting hole. The main connector has a step for the flange to abut against. A nut threaded through the connecting plate is threaded to the end of the main connector that connects to the connecting plate. A spring is provided between the nut and the inner end of the connecting post to provide elasticity, ensuring that the flange always tends to abut against the step. This utility model has the advantages of good applicability and convenient connection.

[0004] Currently, when cables inside the switch cabinet are connected to the power interface via connectors, although the connectors and power interfaces have a similar protruding and concave structure to ensure a stable connection, due to the large number of lines inside the switch, during the process of centralized or branched wiring, cables in some locations are easily pulled or dragged due to operational factors. If the force is too great, the connectors and power interfaces can easily become detached. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a cable head limiting device for switch cabinets.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a cable head limiting device for switch cabinet, including a mounting plate. The mounting plate is a strip structure with several power-conducting interfaces distributed throughout its surface. The connection between the power-conducting interfaces and the mounting plate is fixed by screws. One end of the power-conducting interface is inserted into a connector, and the other end of the connector is energized and has a cable installed.

[0008] The upper end of the mounting plate is provided with several top plates. The lower end of the top plates is fixedly assembled to the surface of the mounting plate by a bracket. A pin sleeve is provided through the end of the top plate away from the mounting plate. A limit pin is slidably sleeved inside the pin sleeve. A spring is wound around the surface of the limit pin. The two ends of the spring are fixedly assembled to the end of the limit pin and the end face of the pin sleeve, respectively. A pin seat is fixed on the outer wall of the joint. The lower end of the limit pin is inserted and connected to the inside of the pin seat.

[0009] In detail, the mounting plate is provided with mounting heads at both ends. One end of the mounting head is welded to the surface of the mounting plate. The surface of the mounting head has a mounting hole that penetrates through it. The inner wall of the mounting hole is smooth or threaded.

[0010] In detail, a connecting frame is snapped onto the end of the top plate away from the mounting plate. The connecting frame is a right-angle bent structure. The connection position between the connecting frame and the top plate is fixed by screws. A threaded sleeve is installed through the horizontal position of the connecting frame. The connection position between the threaded sleeve and the connecting frame is fixed by welding.

[0011] In detail, a threaded rod is provided through the inside of the threaded sleeve, and the external thread of the threaded rod is threadedly connected to the internal thread of the threaded sleeve. A knob is provided at the upper end of the threaded rod, and the connection position between the knob and the threaded rod is fixed by welding.

[0012] In detail, a bearing is provided at the lower end of the threaded rod, and the inner ring wall of the bearing is interference-fitted with the lower end of the threaded rod.

[0013] In detail, the lower end of the bearing is provided with an extrusion plate, and the connection between the extrusion plate and the bearing is fixed by welding. The lower end of the extrusion plate is provided with several upper teeth.

[0014] In detail, a limit rod is provided on one side of the upper end of the extrusion plate. The connection position between the limit rod and the extrusion plate is fixed by welding. A limit sleeve is provided through the surface of the connecting frame. The connection position between the limit sleeve and the connecting frame is fixed by welding. The surface of the limit rod and the interior of the limit sleeve are connected through each other.

[0015] In detail, the lower end of the mounting plate is provided with several bottom plates, and the positions of the bottom plates, cables and top plates correspond one-to-one. The upper end of the bottom plate is fixedly assembled with the mounting plate by a bracket. The end of the bottom plate away from the mounting plate is fixed with a lower tooth, and both the lower tooth and the upper tooth are on the same vertical plane as the cable.

[0016] The design scheme proposed in this utility model has the following beneficial effects in application:

[0017] 1. After the cable connector and the power interface are plugged in, in order to prevent them from coming loose due to pulling, first pull the limit pin. Through the stretching effect of the spring, it can move upward to insert the connector and the power interface. Then adjust the position of the pin seat so that it corresponds to the position of the limit pin. Through the reset effect of the spring, the limit pin can be inserted into the pin seat. Thus, the limit protection and anti-loosening effect of the connector and the power interface can be achieved.

[0018] 2. To further protect the cable and connector from pulling, after the connector is connected to the power interface, the cable will be placed directly on the lower teeth of the bottom plate. Then, by rotating the threaded rod with the knob, the threaded rod moves up and down relative to the threaded sleeve. The bearing ensures the stable rotation of the threaded rod while preventing the extrusion plate from moving freely. The extrusion plate can move up and down by sliding the limiting rod in the limiting sleeve. This allows the upper teeth to contact the cable and work with the lower teeth to bite and limit the cable sheath, preventing the pulling force from damaging the cable and connector. Attached Figure Description

[0019] Figure 1 This is a front view of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the rear of the overall structure of this utility model;

[0021] Figure 3 This is a partially enlarged schematic diagram of the top plate and bottom plate of this utility model;

[0022] Figure 4 This is a partially enlarged schematic diagram of the connecting frame portion of this utility model.

[0023] In the diagram: 1. Mounting plate; 11. Power interface; 12. Connector; 13. Cable; 15. Top plate; 16. Pin sleeve; 17. Limit pin; 18. Spring; 19. Pin seat; 2. Mounting head; 21. Mounting hole; 3. Connecting bracket; 31. Threaded sleeve; 32. Threaded rod; 33. Knob; 34. Bearing; 35. Extrusion plate; 36. Upper tooth; 37. Limit rod; 38. Limit sleeve; 39. Bottom plate; 310. Lower tooth. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figures 1-4A cable head limiting device for a switch cabinet includes a mounting plate 1, which is a strip structure. Several power-conducting interfaces 11 are distributed through the surface of the mounting plate 1. The connection position between the power-conducting interfaces 11 and the mounting plate 1 is fixed by screws. One end of the power-conducting interface 11 is inserted into a connector 12, and the other end of the connector 12 is energized and a cable 13 is installed.

[0026] The upper end of the mounting plate 1 is provided with several top plates 15. The lower end of the top plate 15 is fixedly assembled to the surface of the mounting plate 1 via a bracket. A pin sleeve 16 is provided through the end of the top plate 15 away from the mounting plate 1. A limit pin 17 is slidably sleeved inside the pin sleeve 16. A spring 18 is wound around the surface of the limit pin 17. The two ends of the spring 18 are fixedly assembled to the end of the limit pin 17 and the end face of the pin sleeve 16, respectively. A pin seat 19 is fixed on the outer wall of the connector 12. The lower end of the limit pin 17 is inserted and connected to the inside of the pin seat 19.

[0027] It should be further noted that mounting heads 2 are provided at both ends of the mounting plate 1. One end of the mounting head 2 is welded to the surface of the mounting plate 1. The surface of the mounting head 2 has a through mounting hole 21. The inner wall of the mounting hole 21 is smooth or threaded. The mounting plate 1 can be fixed to the inside of the switch cabinet or the wiring position by screws or bolts, which facilitates flexible assembly and use.

[0028] It should be further explained that a connecting frame 3 is snapped onto the end of the top plate 15 away from the mounting plate 1. The connecting frame 3 is a right-angle bent structure. The connection position between the connecting frame 3 and the top plate 15 is fixed by screws. A threaded sleeve 31 is provided through the horizontal position of the connecting frame 3. The connection position between the threaded sleeve 31 and the connecting frame 3 is fixed by welding. As an extension structure, the connecting frame 3 can ensure that the upper teeth 36 correspond to the upper and lower positions of the cable 13.

[0029] It should be further explained that a threaded rod 32 is provided through the inside of the threaded sleeve 31. The external thread of the threaded rod 32 is threadedly connected to the internal thread of the threaded sleeve 31. A knob 33 is provided at the upper end of the threaded rod 32. The connection between the knob 33 and the threaded rod 32 is fixed by welding. The knob 33 can be turned manually, which is simple, quick and easy to operate. The surface of the knob 33 is provided with anti-slip protrusions to provide sufficient friction when twisting.

[0030] It should be further explained that a bearing 34 is provided at the lower end of the threaded rod 32. The inner ring wall of the bearing 34 is interference-fitted with the lower end of the threaded rod 32. The bearing 34 is mainly to ensure that the threaded rod 32 can rotate normally and to prevent the extrusion plate 35 from rotating synchronously with the threaded rod 32.

[0031] It should be further explained that a pressing plate 35 is provided at the lower end of the bearing 34. The connection between the pressing plate 35 and the bearing 34 is fixed by welding. Several upper teeth 36 are distributed at the lower end of the pressing plate 35. The upper teeth 36 can contact the sheath of the cable 13 by moving up and down, thereby achieving the interlocking effect.

[0032] It should be further explained that a limiting rod 37 is provided on one side of the upper end of the extrusion plate 35. The connection position of the limiting rod 37 and the extrusion plate 35 is fixed by welding. A limiting sleeve 38 is provided through the surface of the connecting frame 3. The connection position of the limiting sleeve 38 and the connecting frame 3 is fixed by welding. The surface of the limiting rod 37 is provided through the interior of the limiting sleeve 38. By allowing the limiting rod 37 to slide within the limiting sleeve 38, the extrusion plate 35 can move straight up and down.

[0033] It should be further explained that the lower end of the mounting plate 1 is provided with several bottom plates 39. The bottom plates 39, the cable 13 and the top plate 15 are in one-to-one correspondence. The upper end of the bottom plate 39 is fixedly assembled to the mounting plate 1 by a bracket. The end of the bottom plate 39 away from the mounting plate 1 is fixed with a lower tooth 310. The lower tooth 310 and the upper tooth 36 are both on the same vertical plane as the cable 13. Through the cooperation of the upper tooth 36 and the lower tooth 310, the upper and lower bite limit of the cable 13 sheath can be realized. Thus, when the cable 13 is pulled, it plays a role in preventing the cable 13 and the joint 12 from breaking.

[0034] Working method: After the connector 12 of the cable 13 is plugged into the power interface 11, in order to prevent it from coming loose due to pulling, first pull the limiting pin 17. Through the stretching effect of the spring 18, it can move upward to insert the connector 12 and the power interface 11 into the connection. Then adjust the position of the pin seat 19 so that it corresponds to the position of the limiting pin 17. Through the reset effect of the spring 18, the limiting pin 17 can be inserted into the pin seat 19. Thus, the limiting protection and anti-loosening effect of the connector 12 and the power interface 11 can be achieved.

[0035] In order to further protect the cable 13 and the connector 12 from being pulled, after the connector 12 is connected to the power interface 11, the cable 13 will be placed directly on the lower tooth 310 of the bottom plate 39. Then, the threaded rod 32 is rotated by the knob 33, so that the threaded rod 32 moves up and down relative to the threaded sleeve 31. The bearing 34 can ensure that the threaded rod 32 rotates stably while preventing the extrusion plate 35 from moving freely.

[0036] By sliding the limiting rod 37 within the limiting sleeve 38, the pressing plate 35 can move up and down, thereby allowing the upper tooth 36 to contact the cable 13 and cooperate with the lower tooth 310 to bite and limit the outer sheath of the cable 13, preventing the pulling force from damaging the cable 13 and the joint 12.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A switchgear cable head limiting device comprising a mounting plate (1), characterised in that: The installation plate (1) is of strip structure, and a plurality of power connection interfaces (11) are distributed on the surface of the installation plate (1) and are fixed by screws at the joint positions of the installation plate (1), one end of the power connection interface (11) is inserted into the joint (12), and the other end of the joint (12) is provided with the cable (13). A plurality of top plates (15) are arranged at the upper end of the installation plate (1) and are fixedly assembled with the surface of the installation plate (1) by supports, a pin sleeve (16) is arranged at the end of the top plate (15) away from the installation plate (1), a limiting pin (17) is slidably sleeved in the pin sleeve (16), a spring (18) is wound on the surface of the limiting pin (17), the two ends of the spring (18) are fixedly assembled with the end of the limiting pin (17) and the end face of the pin sleeve (16) respectively, and the outer wall surface of the joint (12) is fixed with a pin seat (19), and the lower end of the limiting pin (17) is inserted into the pin seat (19).

2. The switchgear cable head limiting device according to claim 1, characterized in that: The installation plate (1) is of strip structure, and a plurality of power connection interfaces (11) are distributed on the surface of the installation plate (1) and are fixed by screws at the joint positions of the installation plate (1), one end of the power connection interface (11) is inserted into the joint (12), and the other end of the joint (12) is provided with the cable (13).

3. The switchgear cable head limiting device of claim 1, wherein: The end of the top plate (15) away from the installation plate (1) is provided with a joint bracket (3) in a clamping mode, the joint bracket (3) is of right-angle bending structure, the joint bracket (3) is fixed at the joint position of the top plate (15) by screws, and a threaded sleeve (31) is arranged at the horizontal position of the joint bracket (3) in a penetrating mode.

4. The switchgear cable head limiting device of claim 3, wherein: The threaded sleeve (31) is provided with a threaded rod (32) penetrating in the inside thereof, the external thread of the threaded rod (32) is threadedly connected with the internal thread of the threaded sleeve (31), the upper end of the threaded rod (32) is provided with a knob (33), and the joint position of the threaded rod (32) and the knob (33) is fixed by welding.

5. The switchgear cable head limiting device of claim 4, wherein: The lower end of the threaded rod (32) is provided with a bearing (34), and the inner ring wall of the bearing (34) is arranged in interference fit with the lower end of the threaded rod (32).

6. The switchgear cable head limiting device of claim 5, wherein: The lower end of the bearing (34) is provided with an extrusion plate (35), the joint position of the extrusion plate (35) and the bearing (34) is fixed by welding, and the lower end of the extrusion plate (35) is provided with a plurality of upper teeth (36).

7. The switchgear cable head limiting device of claim 6, wherein: The extrusion plate (35) is provided with a limiting rod (37) on one side of the upper end thereof, the joint position of the limiting rod (37) and the extrusion plate (35) is fixed by welding, a limiting sleeve (38) is arranged penetrating on the surface of the joint bracket (3), the joint position of the limiting sleeve (38) and the joint bracket (3) is fixed by welding, and the surface of the limiting rod (37) and the inside of the limiting sleeve (38) are penetratingly arranged.

8. The switchgear cable head limiting device of claim 7, wherein: The lower end of the mounting plate (1) is provided with several bottom plates (39), the bottom plate (39), the cable (13) and the top plate (15) are one-to-one corresponding in position, the upper end of the bottom plate (39) is fixedly assembled with the mounting plate (1) through a support, the end of the bottom plate (39) away from the mounting plate (1) is fixed with a lower tooth (310), and the lower tooth (310) and the upper tooth (36) are on the same vertical plane of the cable (13).

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