Low-voltage cable quick access device

Abstract

The invention relates to the technical field of electric power emergency facilities, in particular to a low-voltage cable quick access device which comprises an installation cabinet, a cable access port is formed in the installation cabinet, a low-voltage cable is inserted into the cable access port, the cable access port is connected with a copper bar, the copper bar is connected with one end of an electric brake gate, and the other end of the electric brake gate is connected with an access terminal. The cable part of the low-voltage cable is placed on the displacement assembly, and the displacement assembly is arranged on the installation cabinet. An automatic access device is arranged between the low-voltage cable and the cable access port, and the automatic access device comprises an angle adjusting structure, a clamping structure and a detection structure. The angle adjusting structure comprises a universal joint structure, a wire of the cable part penetrates through the universal joint structure, and the wire is connected with the cable connector. The clamping structure comprises a clamping head and a clamping groove, and the clamping head is matched with the clamping groove in a clamping mode. The detection structure comprises a sensor, and the sensing end of the sensor faces the interior of the clamping groove. According to the invention, the technical problem of automatically and accurately accessing the low-voltage cable without power failure under the emergency condition is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power emergency facilities, and in particular to a low-voltage cable quick access device. Background Art

[0002] The low-voltage cable quick access device is an emergency power access device that integrates electrical quick connectors and relay protection technology. It can quickly access the power supply in situations such as emergency repair and disaster relief, protective power supply, and temporary protective power supply, thereby improving the power emergency capability and power supply and power protection efficiency. For example, when a natural disaster or emergency event causes a power outage, the low-voltage cable quick access device can quickly access emergency power sources such as emergency generators to provide power guarantee for emergency repair and disaster relief; in situations where temporary protective power supply is required, such as important events, construction sites, etc., the low-voltage cable quick access device can be used to quickly access the power supply to ensure power safety.

[0003] In the prior art, when accessing a low-voltage cable, workers are generally required to disconnect the circuit of the access terminal device, then access the low-voltage cable, and then connect the circuit, so as to ensure the safety of the workers' operations during the access process. However, in some emergency situations, the power-off access process takes a long time, and its applicability is low in emergency construction where every second counts. A structure is needed to ensure rapid access to the low-voltage cable.

[0004] The patent name that has been published is "A 0.4kV low-voltage non-stop power supply cable quick access device", and the Chinese patent with the publication number of CN114744442B. The patent includes a clamp unit, an insulating rod and a guide cable; the clamp unit includes a clamp plate, a clamp block is set in the clamp plate, one end is rotatably connected to the threaded rod, the threaded rod is threadedly connected to the clamp plate, a terminal is fixedly set on the outer side of the clamp plate, the end of the threaded rod away from the clamp block is connected to one end of the insulating rod, the guide cable is fixedly connected to the terminal through a terminal, a prismatic rod is fixedly set at one end of the threaded rod away from the clamp block, the insulating rod is provided with a prismatic hole matching the prismatic rod, and the prismatic rod and the prismatic hole are gap-matched and fixed by magnetic attraction. The device can quickly connect the low-voltage bypass cable to the low-voltage equipment without power outages, and repair the low-voltage equipment.

[0005] Although the device can access cables without power outage, workers are still required to manually access the cables. Even if an insulating rod is installed, it is still dangerous. Summary of the invention

[0006] The purpose of the present application is to provide a low-voltage cable quick access device, which solves the technical problem of automatically and accurately accessing the low-voltage cable without power outage in an emergency situation.

[0007] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0008] A low-voltage cable quick access device comprises an installation cabinet, in which a cable access port is arranged, the cable access port is plugged with a low-voltage cable, the cable access port is connected to a copper busbar, the copper busbar is connected to one end of an electric switch gate, and the other end of the electric switch gate is connected to an access terminal.

[0009] Preferably, the cable portion of the low-voltage cable is placed on a displacement assembly, and the displacement assembly is arranged in an installation cabinet, with the displacement direction being toward the plug-in direction of the cable access port.

[0010] Preferably, an automatic access device is provided between the low-voltage cable and the cable access port, and the automatic access device comprises an angle adjustment structure, a clamping structure, and a detection structure.

[0011] Preferably, the angle adjustment structure includes a connecting tube head and a universal head. The cable access end of the low-voltage cable is provided with a connecting tube head, and the universal head is sleeved inside the connecting tube head to form a universal joint structure. The other end of the universal head is connected to a cable connector, and the wires of the cable part are passed through the universal joint structure and connected to the cable connector.

[0012] Preferably, the snap-fit ​​structure comprises a snap-fit ​​joint and a snap-fit ​​groove, the snap-fit ​​joint is arranged outside the low-voltage cable, the snap-fit ​​groove is arranged at the cable access port, and the snap-fit ​​joint is snap-fitted and matched with the snap-fit ​​groove.

[0013] Preferably, the detection structure includes a sensor, the sensor passes through the snap-in slot, and the sensing end of the sensor faces the inside of the snap-in slot.

[0014] Preferably, the displacement assembly includes a sealing plate, which is slidably arranged in the installation cabinet, and the sealing plate has the same front surface area as the installation cabinet. Sliders are fixedly installed on both sides of the sealing plate, and the slides are slidably arranged in slide grooves arranged on both sides of the installation cabinet. The slides are connected to the driving shaft of the electric cylinder, and the electric cylinder is fixedly installed outside the installation cabinet.

[0015] Preferably, the sliding direction of the sealing plate is from a position facing the cabinet surface of the installation cabinet toward a position inside the cabinet body of the installation cabinet.

[0016] Preferably, the automatic access device also includes a placement slot, the placement slot passes through the sealing plate, a slot plate is provided at the bottom of the placement slot, the slot plate is fixed on the outer wall surface of the sealing plate, a sink groove matching the shape of the low-voltage cable is provided in the slot plate, and the sink groove extends to the placement slot.

[0017] Preferably, a plate is fixedly provided at the outer end of the trough plate away from the sealing plate, a baffle is fixedly provided on the outside of the low-voltage cable, the baffle is located inside the trough plate and abuts against the plate, and the cable connector of the low-voltage cable is located between the sealing plate and the installation cabinet.

[0018] Preferably, the automatic access device also includes a pressing device, which includes a pressing plate, which is slidably arranged on the inner wall surface of the sealing plate, and the lower end of the pressing plate is provided with a notch matching the shape of the low-voltage cable, and the upper end of the pressing plate is fixedly connected to the push rod of the cylinder, and the cylinder is fixedly arranged on the inner wall surface of the sealing plate.

[0019] Preferably, when the low-voltage cable is connected to the cable access port, the notch at the lower end of the pressure plate matches and abuts against the outer downward pressure of the low-voltage cable, the downward pressure direction of the pressure plate is perpendicular to the access direction of the low-voltage cable, and the plate surface of the pressure plate covers the groove surface where the notch is placed.

[0020] Preferably, the clamping joint in the clamping structure includes a guide stopper, and the clamping groove in the clamping structure includes a barrel.

[0021] Preferably, the guide stopper is fixedly mounted on the outside of the cable connector of the low-voltage cable, and an inclined surface is provided on the outside of the guide stopper, with the inclined bottom end of the inclined surface being located on a side of the guide stopper close to the cable connector end.

[0022] Preferably, the bobbin is fixedly installed at the cable access port, a circular block is fixedly provided at the outer end of the bobbin, a chamber is provided in the circular block, a sliding column is slidably provided in the chamber, a spring is connected to the outer sleeve of the sliding column, one end of the spring close to the bobbin is fixedly connected to the sliding column, one end of the spring away from the bobbin is fixedly connected in the chamber, one end of the sliding column close to the bobbin is fixedly connected to an inclined block, the inclined block passes through the tube, and the inclined surface of the inclined block is arranged parallel to the inclined surface.

[0023] Preferably, the sliding direction of the inclined block is perpendicular to the access direction of the low-voltage cable. When the low-voltage cable is clamped, the inclined block abuts against a side surface of the guide stopper that is not provided with an inclined surface.

[0024] Preferably, the clamping structure also includes a guide retraction head, which is slidably arranged outside the cable connector, and a retaining ring is fixedly installed on one side of the cable connector outside close to the universal joint structure, and the guide retraction head is located between the retaining ring and the guide retaining head.

[0025] Preferably, an inclined surface is provided on the outside of the guide retraction head, and the inclined bottom end of the inclined surface is located at an end of the guide retraction head close to the retaining ring.

[0026] Preferably, when the low-voltage cable finishes clamping and is reset and retracted, the cable connector end of the low-voltage cable extends into the margin hole, and the margin hole is located between the bobbin and the cable access port.

[0027] Preferably, the detection structure also includes an alarm light, which is fixedly installed outside the installation cabinet and connected to the sensor through a signal line.

[0028] Preferably, a cabinet door that can be opened and closed is provided on the side of the installation cabinet, and the position of the cabinet door corresponds to the cable access position in the installation cabinet.

[0029] The technical solution of the present application has at least the following advantages and beneficial effects:

[0030] In the present invention, by setting a displacement component and a stable structure, during the emergency rescue construction process, the worker directly puts the low-voltage cable transported from the outside into the stable structure to fix the position, and then uses the displacement component to automatically connect the cable connector to the cable access port in the installation cabinet. The entire access process does not require the worker to directly contact the entire device, thereby ensuring the worker's safety, and allowing the low-voltage cable to be automatically connected without power outages, without the need for manual power outages, cable docking, tightening, and re-energization of the conventional cable access process, thereby reducing access time and improving rescue efficiency.

[0031] In the present invention, an angle adjustment structure, i.e., a universal joint structure, is provided at the cable joint position of the low-voltage cable, so that the cable joint of the low-voltage cable can swing at a small angle, thereby ensuring that when the worker places the cable in a stable structure for positioning, the angle error between the cable joint and the cable access port caused by manual placement, as well as the angle error caused by the tilting of the cable joint due to the weight of the external low-voltage cable, can be offset by the universal joint structure and the guide structure at the joint position when the displacement component drives the low-voltage cable to dock, so that the cable joint can be docked with the cable access port quickly and accurately without manual adjustment;

[0032] In the present invention, by setting a clamping structure, it is ensured that the integrated clamping and fixing are carried out synchronously during the automatic access process, so that the low-voltage cable does not loosen, and when the low-voltage cable is separated, the separation is automatically realized without manual separation of the low-voltage cable;

[0033] In the present invention, a detection structure is provided to detect whether the cable connector of the low-voltage cable is successfully connected to the cable access port during the automatic access process, and the access signal is displayed externally for workers to observe, without the need for workers to manually confirm the access status of the cable access position. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a cross-sectional structural schematic diagram of the present invention.

[0035] Figure 2 It is a schematic diagram of the structure of the present invention.

[0036] Figure 3 It is a schematic diagram of the cross-sectional structure of the installation cabinet in the present invention.

[0037] Figure 4 It is a schematic cross-sectional view of the stable structure in the present invention.

[0038] Figure 5 It is a schematic cross-sectional structure diagram of another angle of the stabilizing structure in the present invention.

[0039] Figure 6 It is a schematic cross-sectional view of the universal structure of the present invention.

[0040] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of A.

[0041] Figure 8 It is a left-side structural schematic diagram of the present invention.

[0042] In the figure: 1-installation cabinet, 2-copper busbar, 3-cable access port, 4-electric switch, 401-gate piece, 402-access end copper piece, 403-pull rod, 5-access terminal, 6-displacement component, 601-sealing plate, 602-slider, 603-electric cylinder, 7-automatic access device, 701-placement slot, 702-slot plate, 703-baffle, 704-pressure plate, 705-cylinder, 706-connecting pipe head, 707-universal head, 708-baffle ring, 709-guide baffle, 710-guide retraction head, 711-bobbin, 712-circular ring block, 713-sliding column, 714-spring, 715-oblique block, 716-residue hole, 717-sensor, 718-warning light, 719-cabinet door, 8-low-voltage cable. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. If the terms "center", "upper", "lower", "inner", "outer", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the figure, or the orientation or position relationship in which the product of the application is usually placed when in use, it is only for the convenience of describing the present application 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 operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. It should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they 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 directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Example

[0046] Please refer to Figure 1-Figure 8 The present invention provides an installation cabinet 1, a copper busbar 2, a cable access port 3, a switch 4, an access terminal 5, a displacement component 6, an automatic access device 7, and a low-voltage cable 8.

[0047] In the prior art, a cable access port 3 is provided in the installation cabinet 1. The low-voltage cable 8 is manually brought into the installation cabinet 1 and plugged into the cable access port 3. The cable access port 3 is connected to the copper bus 2. The copper bus 2 is connected to one end of the switch 4. The other end of the switch 4 is connected to the access terminal 5.

[0048] When the switch 4 is pushed away, the access terminal 5 is separated from the copper bus 2 and the circuit is disconnected. At this time, the worker can safely plug the low-voltage cable 8 into the cable access port 3 .

[0049] When the switch 4 is closed, the access terminal 5 contacts the copper bus 2 , the circuit is connected, and the plugged low-voltage cable 8 transmits power to the access terminal 5 .

[0050] The electric switch 4 is composed of a gate piece 401, an access-end copper piece 402 and a pull rod 403. One end of the gate piece 401 is rotatably set on the copper bus 2. The access-end copper piece 402 is fixedly connected to the access terminal 5. The pull rod 403 is fixedly connected to the gate piece 401 and is provided with an insulating handle. When the pull rod 403 is pulled down, the other end of the gate piece 401 contacts the access-end copper piece 402 to achieve power-on. When the pull rod 403 is pulled up, the gate piece 401 is separated from the access-end copper piece 402 to achieve power-off.

[0051] Please refer to Figure 2 and Figure 3 In this embodiment, the cable portion of the low-voltage cable 8 is placed on the displacement assembly 6 with the displacement direction toward the plugging direction of the cable access port 3, thereby achieving automatic access to the low-voltage cable 8.

[0052] The displacement assembly 6 includes a sealing plate 601 , a slider 602 , and an electric cylinder 603 .

[0053] Specifically, the sealing plate 601 is slidably arranged in the installation cabinet 1, and the sealing plate 601 is consistent with the front view cabinet surface area of ​​the installation cabinet 1 (the sealing plate 601 replaces the front view cabinet surface of the installation cabinet 1, and the sides of the sealing plate 601 slide in the inner wall of the installation cabinet 1), and sliders 602 are fixedly installed on both sides of the sealing plate 601. The sliders 602 are slidably arranged in the slide grooves arranged on both sides of the installation cabinet 1. The sliders 602 are connected to the driving shaft of the electric cylinder 603, and the electric cylinder 603 is fixedly installed outside the installation cabinet 1. The sliding direction of the sealing plate 601 is from the front view cabinet surface position of the installation cabinet 1 toward the internal position of the cabinet body of the installation cabinet 1.

[0054] Preferably, the sealing plate 601 can deliver the low-voltage cable 8 to the cable access port 3 without opening the cabinet body of the installation cabinet 1, thereby realizing automatic access. During the entire displacement access process, there is no need for workers to come into contact with the low-voltage cable 8 and the partition structure components inside the installation cabinet 1, thereby realizing access of the low-voltage cable 8 without power outage, eliminating the process of switching the power switch 4, realizing rapid cable access and rapid power transmission in an emergency state, and ensuring the safety of the entire access process.

[0055] Furthermore, in this embodiment, by providing an automatic access device 7 between the low-voltage cable 8 and the cable access port 3, the low-voltage cable 8 is automatically accessed and disconnected, and the access success rate is guaranteed.

[0056] The automatic access device 7 includes an angle adjustment structure, a clamping structure, a detection structure and a stabilizing structure.

[0057] Among them, the angle adjustment structure can automatically adjust the angle of the cable joint of the low-voltage cable 8, ensuring that even if the low-voltage cable 8 and the cable access port 3 are not in a coaxial state, they can be successfully connected.

[0058] Driven by the displacement assembly 6 , the clamping structure can automatically clamp and fix the successfully matched low-voltage cable 8 and the cable access port 3 or quickly separate them.

[0059] The detection structure can automatically detect whether the low-voltage cable 8 is successfully connected after the low-voltage cable 8 is connected, and quickly remind the worker when the connection fails.

[0060] The stable structure is used to place and fix the low-voltage cable 8, ensuring the displacement accuracy when the displacement component 6 drives the low-voltage cable 8 to be connected.

[0061] Please refer to Figure 2-Figure 5 The stable structure includes a placement slot 701, a slot plate 702, a baffle 703, a pressure plate 704, and a cylinder 705.

[0062] Specifically, the placement slot 701 passes through the sealing plate 601, and the slot area of ​​the placement slot 701 is larger than the diameter of the low-voltage cable 8, which is convenient for the worker to place the cable connector of the low-voltage cable 8 into the installation cabinet 1 through the placement slot 701. A slot plate 702 is provided at the bottom of the placement slot 701, and the slot plate 702 is fixed on the outer wall surface of the sealing plate 601. A sink groove matching the shape of the low-voltage cable 8 is provided in the slot plate 702, and the sink groove extends to the placement slot 701. A plate is fixed at the outer end of the slot plate 702 away from the sealing plate 601, and a card slot is opened on the plate. When the worker places the low-voltage cable 8, the cable is placed in the card slot, and the cable sinks into the sink groove of the slot plate 702, so as to match and place the low-voltage cable 8.

[0063] A baffle 703 is fixedly arranged on the outside of the low-voltage cable 8. The baffle 703 is located in the groove plate 702 and abuts against the plate. The cable connector of the low-voltage cable 8 is located between the sealing plate 601 and the installation cabinet 1. When the displacement component 6 drives the sealing plate 601 to move, the plate of the archive will push the inner baffle 703, thereby driving the low-voltage cable 8 to move synchronously. Regardless of whether the length of the cable connector of the low-voltage cable 8 extending into the installation cabinet 1 is consistent when the worker places the cable, the baffle 703 abutting on the outside will abut against the baffle during the displacement process to achieve synchronization of the displacement position of the cable connector.

[0064] A pressure plate 704 is slidably arranged on the inner wall of the sealing plate 601 , and a groove matching the shape of the low-voltage cable 8 is arranged at the lower end of the pressure plate 704 . The upper end of the pressure plate 704 is fixedly connected to the push rod of the cylinder 705 , and the cylinder 705 is fixedly arranged on the inner wall surface of the sealing plate 601 .

[0065] Before the low-voltage cable 8 is connected, the cylinder 705 is in an extended state, so that the pressure plate 704 closes the placement slot 701 to prevent the slot from being too large and external rainwater or debris from entering the installation cabinet 1;

[0066] During the process of connecting the low-voltage cable 8, when the low-voltage cable 8 is placed in the placement slot 701, the cylinder 705 retracts, causing the pressure plate 704 to move upward, opening the closed placement slot 701. When the low-voltage cable 8 is placed, the cylinder 705 drives the pressure plate 704 to press down, matching and abutting with the outside of the low-voltage cable 8. The downward pressing direction of the pressure plate 704 is perpendicular to the connection direction of the low-voltage cable 8.

[0067] Because the cable portion of the low-voltage cable 8 extending into the installation cabinet 1 accounts for a relatively small proportion relative to the entire low-voltage cable 8 line group, when the low-voltage cable 8 is connected, the external cable portion is heavier and will sink, exerting corresponding pressure on the cable access end. Therefore, a pressure plate 704 that exerts downward pressure is provided to offset the downward weight of the external cable portion, thereby ensuring that the low-voltage cable 8 placed in a stable structure will not have the access end lifted.

[0068] Please refer to Figure 6 The angle adjustment structure includes a connecting pipe head 706 and a universal head 707.

[0069] Specifically, a connecting pipe head 706 is provided at the cable access end of the low-voltage cable 8. The connecting pipe head 706 and the cable part can be fixedly connected or detachably connected by threads. A universal head 707 is sleeved inside the connecting pipe head 706. The sleeve end of the universal head 707 is spherical and can swing freely inside the connecting pipe head 706, thereby forming a universal joint structure.

[0070] The other end of the universal head 707 is tubular and fixedly connected with a cable connector, wherein a through pipe is provided inside the connecting pipe head 706 and the universal head 707, and the wires of the cable part pass through the pipe in the universal joint structure and are connected to the cable connector to ensure the transmission of electricity.

[0071] Preferably, because the low-voltage cable 8 is placed manually in the stable structure with low placement accuracy, and the access work is automatically performed by the device, the access position of the cable connector cannot be manually adjusted and corrected during the displacement process. Therefore, by utilizing the cable connector that swings freely with a universal joint structure, the access angle of the cable connector is automatically adjusted during access, thereby achieving smooth access (due to the setting of the sink groove in the stable structure, the access error range between the cable connector and the cable access port 3 is small, and smooth access can be achieved by only adjusting the cable connector at a small angle through the universal joint structure).

[0072] It is worth mentioning that there is a large friction force between the connecting pipe head 706 and the universal head 707 made of plastic material. The friction resistance means that under normal circumstances, the universal head 707 will not swing freely in the connecting pipe head 706. Only when the cable connector is not connected to the correct position, the universal head 707 will overcome the friction resistance and swing due to the pressure from the cable connector.

[0073] Please refer to Figure 7 The card connection structure includes a card connection joint and a card connection groove. The card connection joint is arranged outside the low-voltage cable 8, and the card connection groove is arranged at the cable access port 3. The card connection joint is card-connected and matched with the card connection groove.

[0074] Specifically, the clamping joint includes a retaining ring 708 , a guide retaining head 709 , and a guide retracting head 710 ; the clamping groove includes a barrel 711 , a circular ring block 712 , a sliding column 713 , a spring 714 , an inclined block 715 , and a residual hole 716 .

[0075] Among them, the guide stopper 709 is fixedly installed on the outside of the cable connector of the low-voltage cable 8, and an inclined surface is arranged on the outside of the guide stopper 709, and the inclined bottom end of the inclined surface is located on the side of the guide stopper 709 close to the cable connector end, and the bobbin 711 is fixedly installed at the cable access port 3, and a through hole coaxial with the cable access port 3 is arranged inside the bobbin 711, and the aperture of the hole is larger than the maximum outer diameter of the guide stopper 709, so that the guide stopper 709 can be inserted into the through hole in the bobbin 711, so that the cable connector and the cable access port 3 can be plugged and matched.

[0076] The outer end of the bobbin 711 is fixedly provided with a circular block 712, a chamber is provided in the circular block 712, a sliding column 713 is slidably provided in the chamber, a spring 714 is connected to the outer sleeve of the sliding column 713, one end of the spring 714 close to the bobbin 711 is fixedly connected to the sliding column 713, one end of the spring 714 away from the bobbin 711 is fixedly connected in the chamber, and one end of the sliding column 713 close to the bobbin 711 is fixedly connected to an inclined block 715, the inclined block 715 passes through the tube, and the inclined surface of the inclined block 715 is arranged parallel to the inclined surface. The sliding direction of the inclined block 715 is perpendicular to the access direction of the low-voltage cable 8, so that the guide stopper 709 can be clamped by the inclined block 715.

[0077] Before the low-voltage cable 8 is connected, the inclined block 715 is extended into the through hole of the bobbin 711 by the elastic force of the spring 714 .

[0078] When the low-voltage cable 8 is connected, the cable connector gradually enters the through-hole of the bobbin 711, and the inclined surface of the inclined block 715 faces the cable connector, which will not block the insertion of the cable connector until the guide stop 709 moves to the inclined block 715. The inclined block 715 slides over the inclined surface of the guide stop 709 and is inserted into the other side surface of the guide stop 709 (the side surface that is not part of the inclined surface). At this time, the displacement assembly 6 stops moving, and the cable connector is caught by the inclined block 715 through the guide stopper and cannot be moved back. At this time, the cable connector is connected to the cable access port 3 to realize power transmission.

[0079] It is worth noting that a guide angle is provided at the outer edge of the through hole of the bobbin 711 on the side close to the cable connector, so as to facilitate the guidance and alignment of the slightly tilted cable connector through the combined action of the guide angle and the universal structure.

[0080] In addition, a guide retraction head 710 is slidably provided on the outside of the cable connector, a retaining ring 708 is fixedly installed on the side of the cable connector near the universal joint structure, and the guide retraction head 710 is located between the retaining ring 708 and the guide retaining head 709. An inclined surface is provided on the outside of the guide retraction head 710, and the inclined bottom end of the inclined surface is located at one end of the guide retraction head 710 near the retaining ring 708.

[0081] When the low-voltage cable 8 remains in the connected state, the inclined block 715 is located between the guide stop head 709 and the guide retraction head 710 .

[0082] When the low-voltage cable 8 needs to be disconnected and separated, the displacement assembly 6 continues to move a short distance toward the cable access port 3, so that the inclined block 715 moves to the guide retraction head 710 and is on the inclined surface of the guide retraction head 710. Then the displacement assembly 6 starts to move back and reset. At this time, the inclined block 715 will apply reverse pressure to the guide retraction head 710, and the guide retraction head 710 will start to move toward the guide stop head 709 until the guide retraction head 710 and the two side surfaces of the guide stop head 709 that are not inclined surfaces are fitted and abutted. At this time, the low-voltage cable 8 will continue to retreat, and the inclined block 715 will slide through the inclined surfaces on both sides of the guide stop head 709 and the guide retraction head 710 that are fitted together, separate from the cable connector, end the clamping, and ensure the smooth separation of the voltage cable.

[0083] It is worth mentioning that, when resetting and retracting, the cable connector end of the low-voltage cable 8 will extend into the margin hole 716, and the margin hole 716 is located between the bobbin 711 and the cable access port 3. The access port of the cable access port 3 is also provided in the margin hole 716 to ensure that when the cable connector is retracted, it will not abut against the cable access port 3 to cause displacement interference.

[0084] In addition, a plurality of slide posts 713, springs 714 and inclined blocks 715 are arranged on the circumference of the annular block 712 to ensure the stability of the clamping.

[0085] Please refer to Figure 7 and Figure 8 The detection structure includes a sensor 717 and an alarm light 718 .

[0086] Specifically, the sensor 717 passes through the bobbin 711, and the sensing end of the sensor 717 faces the inside of the through hole of the bobbin 711, so as to detect whether the cable connector is successfully connected to the through hole.

[0087] The warning light 718 is fixedly installed on the outside of the installation cabinet 1, and the warning light 718 is connected to the sensor 717 through a signal line.

[0088] Because the device accesses the cable through an automatic structure, it is impossible to manually observe whether the access is successful, so a sensor 717 is set at the cable access port 3, and the sensor 717 is set as a proximity sensor 717. When the low-voltage cable 8 is successfully inserted into the cable access port 3, the sensor 717 detects the cable and sends a signal to the alarm light 718, and the alarm light 718 emits a green light, which is a safe access signal; when the low-voltage cable 8 is not inserted into the cable access port 3, the sensor 717 detects the cable and sends a signal to the alarm light 718, and the alarm light 718 emits red and green flashing lights and sounds an alarm, which is an unsafe access signal.

[0089] In this embodiment, an openable cabinet door 719 is provided on the side of the installation cabinet 1. The position of the cabinet door 719 corresponds to the cable access position in the installation cabinet 1, so that when a fault occurs in the internal device of the installation cabinet 1, the staff can open the cabinet door 719 for maintenance work.

[0090] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solution invented here based on the above description, and the scope of the present invention is defined by the attached claims.

Claims

1. A low-voltage cable (8) quick access device, comprising an installation cabinet (1), wherein a cable access port (3) is provided in the installation cabinet (1), the cable access port (3) is plugged with the low-voltage cable (8), the cable access port (3) is connected to a copper busbar (2), the copper busbar (2) is connected to one end of a gate of a switch (4), and the other end of the gate of the switch (4) is connected to an access terminal (5), characterized in that ； The cable portion of the low-voltage cable (8) is placed on a displacement assembly (6), and the displacement assembly (6) is arranged in the installation cabinet (1), with the displacement direction being toward the plugging direction of the cable access port (3); An automatic access device (7) is provided between the low-voltage cable (8) and the cable access port (3), and the automatic access device (7) comprises an angle adjustment structure, a clamping structure, and a detection structure; The angle adjustment structure comprises a connecting pipe head (706) and a universal head (707); the cable access end of the low-voltage cable (8) is provided with a connecting pipe head (706); the universal head (707) is sleeved inside the connecting pipe head (706) to form a universal joint structure; the other end of the universal head (707) is connected to a cable connector; the wires of the cable part are passed through the universal joint structure, and the wires are connected to the cable connector; The clamping structure comprises a clamping joint and a clamping groove, wherein the clamping joint is arranged outside the low-voltage cable (8), the clamping groove is arranged at the cable access port (3), and the clamping joint is clamped and matched with the clamping groove; The detection structure comprises a sensor (717), the sensor (717) passes through the clamping slot, and the sensing end of the sensor (717) faces the inside of the clamping slot.

2. A low voltage cable (8) quick access device according to claim 1, characterized in that: The displacement assembly (6) comprises a sealing plate (601), the sealing plate (601) is slidably arranged in the installation cabinet (1), the sealing plate (601) and the front view cabinet surface area of ​​the installation cabinet (1) are consistent, sliding blocks (602) are fixedly installed on both sides of the sealing plate (601), the sliding blocks (602) are slidably arranged in sliding grooves arranged on both sides of the installation cabinet (1), the sliding blocks (602) are connected to the driving shaft of the electric cylinder (603), and the electric cylinder (603) is fixedly installed outside the installation cabinet (1); The sliding direction of the sealing plate (601) is from a position facing the cabinet surface of the installation cabinet (1) toward a position inside the cabinet body of the installation cabinet (1).

3. A low voltage cable (8) quick access device according to claim 1, characterized in that: The automatic access device (7) further comprises a placement notch (701), the placement notch (701) passes through the sealing plate (601), a slot plate (702) is provided at the bottom of the placement notch (701), the slot plate (702) is fixed on the outer wall surface of the sealing plate (601), a sink groove matching the shape of the low-voltage cable (8) is provided in the slot plate (702), and the sink groove extends to the placement notch (701); A plate is fixedly provided at the outer end of the slot plate (702) away from the sealing plate (601), a baffle (703) is fixedly provided on the cable exterior of the low-voltage cable (8), the baffle (703) is located inside the slot plate (702) and abuts against the plate, and the cable connector of the low-voltage cable (8) is located between the sealing plate (601) and the installation cabinet (1).

4. A low voltage cable (8) quick access device according to claim 1, characterized in that: The automatic access device (7) further comprises a pressing device, which comprises a pressing plate (704), the pressing plate (704) being slidably arranged on the inner wall surface of the sealing plate (601), the lower end of the pressing plate (704) being provided with a notch matching the shape of the low-voltage cable (8), the upper end of the pressing plate (704) being fixedly connected to a push rod of a cylinder (705), and the cylinder (705) being fixedly arranged on the inner wall surface of the sealing plate (601); When the low-voltage cable (8) is connected to the cable access port (3), the notch at the lower end of the pressure plate (704) is pressed downwardly to match and abut against the outside of the low-voltage cable (8), the downward pressing direction of the pressure plate (704) is perpendicular to the access direction of the low-voltage cable (8), and the plate surface of the pressure plate (704) covers the groove surface of the notch (701).

5. A low voltage cable (8) quick access device according to claim 1, characterized in that: The clamping joint in the clamping structure includes a guide stopper (709), and the clamping groove in the clamping structure includes a barrel (711); The guide stopper (709) is fixedly mounted on the outside of the cable connector of the low-voltage cable (8); an inclined surface is arranged on the outside of the guide stopper (709); and the inclined bottom end of the inclined surface is located on a side of the guide stopper (709) close to the cable connector end; The bobbin (711) is fixedly installed at the cable access port (3); a circular block (712) is fixedly arranged at the outer end of the bobbin (711); a chamber is arranged in the circular block (712); a sliding column (713) is slidably arranged in the chamber; a spring (714) is connected to the outer sleeve of the sliding column (713); an end of the spring (714) close to the bobbin (711) is fixedly connected to the sliding column (713); an end of the spring (714) away from the bobbin (711) is fixedly connected in the chamber; an end of the sliding column (713) close to the bobbin (711) is fixedly connected to an inclined block (715); the inclined block (715) passes through the tube; and the inclined surface of the inclined block (715) is arranged parallel to the inclined surface; The sliding direction of the inclined block (715) is perpendicular to the connection direction of the low-voltage cable (8). When the low-voltage cable (8) is clamped, the inclined block (715) abuts against a side surface of the guide stopper (709) that is not provided with an inclined surface.

6. A low voltage cable (8) quick access device according to claim 5, characterized in that: The clamping structure also includes a guide retraction head (710), which is slidably arranged outside the cable connector, and a retaining ring (708) is fixedly installed on one side of the cable connector near the universal joint structure, and the guide retraction head (710) is located between the retaining ring (708) and the guide retaining head (709); An inclined surface is arranged outside the guide retraction head (710), and the inclined bottom end of the inclined surface is located at one end of the guide retraction head (710) close to the retaining ring (708); When the low-voltage cable (8) is finished clamping and reset, the cable connector end of the low-voltage cable (8) extends into the margin hole (716), and the margin hole (716) is located between the bobbin (711) and the cable access port (3).

7. A low voltage cable (8) quick access device according to claim 1, characterized in that: The detection structure also includes an alarm light (718), which is fixedly installed on the installation cabinet (1). The external alarm light (718) is connected to the sensor (717) via a signal line.

8. A low voltage cable (8) quick access device according to claim 1, characterized in that: A cabinet door (719) that can be opened and closed is arranged on the side of the installation cabinet (1), and the position of the cabinet door (719) corresponds to the cable access position in the installation cabinet (1).

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