Buried cable junction box

Abstract

The utility model provides a buried cable junction box, and relates to the technical field of cable junction boxes. The cable junction box is used for solving the technical problems that a cable junction box provided by an existing patent does not take fire-fighting measures, fire disasters and explosions are easily caused when circuits in the box are short-circuited, economic losses are easily caused, and personal safety is threatened. A buried cable junction box comprises a lower shell, an upper shell, half connecting pipes, threaded seats, connecting blocks and screws, a plurality of threaded seats are installed on the lower shell, a plurality of connecting blocks are installed on the upper shell, the screws are arranged on the connecting blocks and the threaded seats in a common threaded mode, and the half connecting pipes are fixedly connected to the lower shell and the upper shell. Sparks generated during short circuit can be detected through the detector, then a signal is transmitted to the signal transmitter, the signal transmitter starts the controller, and the controller controls the fire trace tube to be heated and broken, so that dry powder in the fire trace tube is sprayed out to extinguish fire, and the effect of performing fire extinguishing and fire fighting on the interior of the cable junction box is achieved.

Description

Technical Field

[0001] The utility model provides an underground cable junction box, which relates to the technical field of cable junction boxes. Background Art

[0002] In home decoration, the junction box is one of the electrical auxiliary materials, because the wires used for decoration are passed through the wire conduit, and the junction box is used as a transition at the joint of the wires (for example, the line is relatively long, or the wire conduit needs to turn a corner). The wire conduit is connected to the junction box, and the wires in the wire conduit are connected in the junction box, which plays the role of protecting the wires and connecting the wires. This is the junction box.

[0003] The patent with the patent authorization announcement number CN220358760U discloses a cable junction box. The patent sets an adaptive structure and adopts a column head of 8*10 rectangular array. When installing the box body, the column head can slide into the through groove and compress the second spring, so that the box body can adapt to installation platforms of different shapes. When the cable junction box is installed by reinforcing the installation structure, the first spring and the gasket can play the role of elastic buffer after installation. At the same time, the reaction force of the second spring can also reduce the phenomenon of bolt backthread. However, the cable junction box provided by the patent still has shortcomings in actual use. When the line in the cable junction box is short-circuited, electric sparks are likely to be generated. The cable junction box does not take fire-fighting measures. Electric sparks are likely to cause larger fires and explosions, which will expand the losses. If someone passes by and fails to notice it in time, it may also cause harm to people and threaten personal safety.

[0004] Therefore, it is necessary to provide an underground cable junction box with fire protection function. Utility Model Content

[0005] In order to overcome the shortcomings of the cable junction box provided by the existing patents without fire protection measures, which is easy to cause fire and explosion when a short circuit occurs in the line inside the box, causing economic losses and threatening personal safety, the utility model provides an underground cable junction box with fire protection function.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions: an underground cable junction box, comprising a lower shell, an upper shell, a semi-connecting tube, a threaded seat, a connecting block, screws and a terminal seat, a plurality of threaded seats are installed on the lower shell, a plurality of connecting blocks are installed on the upper shell, screws are threadedly arranged on the connecting block and the threaded seat, and the upper shell and the lower shell together form a cable junction box, a plurality of semi-connecting tubes are fixedly connected to the lower shell and the upper shell, a terminal seat is installed in the lower shell, and also includes a detector, a signal transmitter, a fire detection tube and a controller, a controller and a plurality of detectors are installed in the lower shell and the upper shell, a fire detection tube is fixedly connected to the controller, and two fire detection tubes are respectively fixedly connected to the lower shell and the upper shell, a signal transmitter is installed on the terminal seat, the signal transmitter is connected to the controller signal, and the detector is connected to the signal transmitter signal.

[0007] Furthermore, it also includes multiple first mounting shells installed in the lower shell body, and there are two first mounting shells on each surface of the inner wall of the lower shell body. A slider is slidably arranged in the first mounting shell, and a threaded clamping block is fixedly connected to the slider. A first elastic member is commonly fixedly connected between the slider and the first mounting shell, and a threaded tightening sleeve is commonly threadedly arranged on every two threaded clamping blocks.

[0008] Furthermore, each semi-connecting pipe is equipped with a first flange, and the semi-connecting pipes of the lower shell and the upper shell are jointly sleeved with a second flange, the second flange is fixedly connected to the two first flanges by bolts, the second flange is fixedly connected to a connecting tube, an annular baffle is installed in the connecting tube, and a plurality of regulating wire clamping components are arranged in the connecting tube to prevent foreign matter from penetrating into the junction box.

[0009] Furthermore, the regulating clamp assembly includes multiple groups of guide rods fixed in the connecting tube, each group of guide rods has two guide rods, and each group of guide rods is slidably provided with two semi-ring clamps. Two second elastic members for pushing the two semi-ring clamps closer to each other are wound around the guide rods, and the ring holes of the semi-ring clamps on each group of guide rods have different sizes.

[0010] Furthermore, it also includes multiple second mounting shells installed on the lower shell body, a mounting block is installed in the second mounting shell, a vortex rod is rotatably arranged on the mounting block, the vortex rod penetrates to the outside of the second mounting shell, a turbine is rotatably arranged in the second mounting shell, the turbine cooperates with the vortex rod, a slide groove is opened in the second mounting shell, a sliding plate is slidably arranged in the slide groove, a threaded drill rod is fixedly connected to the sliding plate, the threaded drill rod is threadedly connected to the turbine, and the threaded drill rod can penetrate to the outside of the second mounting shell.

[0011] Furthermore, a sealing sheet is embedded in the connecting block.

[0012] Furthermore, two telescopic sleeves are sleeved on the guide rod, and the second elastic member is located inside the telescopic sleeves.

[0013] It also includes that a sealing ring is embedded in the inner ring of the second flange.

[0014] The invention also includes that a rubber ring is embeddedly installed at the bottom of the second installation shell, and the rubber ring is located just below the threaded drill rod.

[0015] Compared with the prior art, the cable junction box provided by the embodiment of the utility model has the following advantages: 1. The spark generated by a short circuit can be detected by the detector, and then the signal is transmitted to the signal transmitter. The signal transmitter turns on the controller, so that the controller controls the fire detection tube to heat up and rupture, so that the dry powder in the fire detection tube is sprayed out to extinguish the fire, thereby achieving the effect of extinguishing fire inside the cable junction box.

[0016] 2. Pass the cable from the semi-connecting tube into the threaded tightening sleeve, and connect it to the two threaded clamps by rotating the threaded tightening sleeve, so that the two threaded clamps drive the slider to slide along the first mounting shell toward each other and tightly fit to clamp the cable, thereby achieving the effect of clamping and fixing the cable.

[0017] 3. By passing the cable through the ring hole between the semi-ring clamps and pushing the two semi-ring clamps to slide close together through the second elastic member, multiple groups of semi-ring clamps are set to adapt to cables of different thicknesses, so that the semi-ring clamps and the cables are in close contact, and the ring holes of the semi-ring clamps are sealed to prevent foreign objects from entering the cable junction box.

[0018] 4. The turbine is driven to rotate by rotating the worm rod, and the turbine drives the threaded drill rod to slide downward along the slide groove through the sliding plate, and the threaded drill rod is inserted into the ground, so as to achieve the effect of reinforcing the cable junction box installed on the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the lower shell, the upper shell and the semi-connecting pipe of the utility model.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the detector, fire detection tube and controller of the utility model.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the lower shell, the wiring seat and the first installation shell of the utility model.

[0023] Figure 5 The utility model is a three-dimensional cross-sectional structural schematic diagram of the sliding block, the thread clamping block and the thread tightening sleeve.

[0024] Figure 6It is a three-dimensional cross-sectional structural schematic diagram of the lower shell, the connecting tube and the second mounting shell of the utility model.

[0025] Figure 7 It is a three-dimensional cross-sectional structural schematic diagram of the connecting cylinder, the annular baffle and the telescopic sleeve of the utility model.

[0026] Figure 8 It is a schematic diagram of the three-dimensional explosion structure of the connecting tube, the guide rod and the semi-ring clamping plate of the utility model.

[0027] Fig. 9 It is a three-dimensional cross-sectional structural schematic diagram of the second mounting shell, the turbine shaft and the turbine of the utility model.

[0028] Fig.10 It is a three-dimensional cross-sectional structural schematic diagram of the mounting block, threaded drill rod and sliding plate of the utility model.

[0029] Figure numbers: 1: lower shell, 2: upper shell, 3: semi-connecting pipe, 4: threaded seat, 5: connecting block, 6: screw, 7: terminal seat, 8: detector, 9: signal transmitter, 10: fire detection tube, 11: controller, 12: first mounting shell, 13: slider, 14: first elastic member, 15: threaded clamping block, 16: threaded contraction sleeve, 17: first flange, 18: second flange, 19: connecting tube, 20: annular baffle, 21: guide rod, 22: semi-annular clamping plate, 23: second elastic member, 24: second mounting shell, 25: mounting block, 26: turbine, 27: turbine, 28: threaded drill rod, 29: slide groove, 30: sliding plate, 31: sealing sheet, 32: telescopic sleeve, 33: sealing ring, 34: rubber ring. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Embodiment 1: An underground cable junction box, see Figure 1-Figure 3As shown, it includes a lower shell 1, an upper shell 2, a semi-connecting pipe 3, a threaded seat 4, a connecting block 5, a screw 6 and a terminal seat 7. Six threaded seats 4 are installed on the outer wall of the lower shell 1 by welding. Six connecting blocks 5 are installed on the outer wall of the upper shell 2 by welding. The connecting blocks 5 and the threaded seats 4 are threadedly provided with screws 6. The upper shell 2 and the lower shell 1 together form a cable junction box. Six semi-connecting pipes 3 are fixedly connected to the lower shell 1 and the upper shell 2 by molding. The lower shell 1 is installed with a terminal block 7 by bolt connection. The base 7 also includes a detector 8, a signal transmitter 9, a fire detection tube 10 and a controller 11. The controller 11 and three detectors 8 for detecting sparks are installed in the lower shell 1 and the upper shell 2 by bolt connection. The fire detection tube 10 filled with dry powder is fixedly connected to the controller 11, and the two fire detection tubes 10 are fixedly connected to the lower shell 1 and the upper shell 2 by bolt connection respectively. The signal transmitter 9 is installed on the terminal block 7 by bolt connection. The signal transmitter 9 is connected to the controller 11 by signal, and the detector 8 is connected to the signal transmitter 9 by signal.

[0032] When the cable junction box is needed, the cable is passed through the semi-connecting pipe 3 into the lower shell 1 and connected to the terminal seat 7, and then the upper shell 2 is covered on the lower shell 1, and the screws 6 are used to successively pass through the connecting block 5 and the threaded seat 4, so that the upper shell 2 and the lower shell 1 are fixedly installed to form a complete cable junction box, and the cable junction box can be buried underground; when a short circuit occurs in the internal circuit of the cable connection and sparks are generated, the detector 8 can detect the spark and transmit the signal to the signal transmitter 9, and the signal transmitter 9 will turn on the controller 11, so that the controller 11 controls the fire detection tube 10 to heat up and rupture, so that the dry powder in the fire detection tube 10 is sprayed out to extinguish the fire and reduce the loss.

[0033] Example 2: Based on Example 1, refer to Figure 4 and Figure 5 As shown, it also includes twelve first mounting shells 12 installed on each surface of the inner wall of the lower shell 1 by bolt connection. There are two first mounting shells 12 on each surface of the inner wall of the lower shell 1. A slider 13 is arranged in the first mounting shell 12 in a transverse sliding manner. A threaded clamp 15 for clamping the cable is fixedly connected to the slider 13 by welding. A first elastic member 14 is fixedly connected between the slider 13 and the first mounting shell 12 by welding. The first elastic member 14 pulls the slider 13 to slide and reset to the inside of the first mounting shell 12. A threaded contraction sleeve 16 is threadedly arranged on each two threaded clamps 15.

[0034] In order to prevent the cable from being pulled out and disengaging from the terminal block 7 or causing poor contact, when connecting the cable to the terminal block 7, first insert the cable from the semi-connecting tube 3 into the threaded tightening sleeve 16, and connect the threaded tightening sleeve 16 to the two threaded clamping blocks 15 by rotating the threaded tightening sleeve 16. With the guidance of the threaded tightening sleeve 16, the two threaded clamping blocks 15 are pulled closer to each other, so that the threaded clamping blocks 15 pull the two sliders 13 to slide and pull out along the first mounting shell 12 to the side close to each other. At this time, the first elastic member 14 is stretched and deformed by force. When the threaded clamping block 15 and the slider When 13 is tightly fitted to clamp the cable, the threaded tightening sleeve 16 is stopped from rotating, and the cable is clamped and fixed by the threaded clamp block 15 and the slider 13, so that the cable is not easily pulled out of the terminal block 7; when the cable needs to be replaced, the threaded tightening sleeve 16 is rotated in the opposite direction to loosen the threaded clamp block 15. At this time, the first elastic member 14 loses the force and returns to its original state, and then the slider 13 is pulled to slide and reset, so that the slider 13 and the threaded clamp block 15 loosen the cable, and the cable can be removed from the terminal block 7 and pulled out.

[0035] See also Figure 6 and Figure 8 As shown, each semi-connecting pipe 3 is installed with a first flange 17 by welding, and the semi-connecting pipes 3 of the lower shell 1 and the upper shell 2 are jointly sleeved with a second flange 18, the second flange 18 is fixedly connected to the two first flanges 17 by bolts, and a connecting tube 19 is fixedly connected to the second flange 18 by welding, and an annular baffle 20 for preventing mud, sand and water vapor from entering is installed in the connecting tube 19 by welding, and multiple groups of regulating clamping components for preventing foreign matter from penetrating into the junction box are arranged in the connecting tube 19; the regulating clamping component includes four groups of guide rods 21 fixedly connected to the connecting tube 19 by welding, each group of guide rods 21 has two, and each group of guide rods 21 is jointly slidably provided with upper and lower semi-ring clamps 22 for clamping the cable, and upper and lower second elastic members 23 for pushing the two semi-ring clamps 22 to approach each other are wound around the guide rods 21, and the ring holes of the semi-ring clamps 22 on each group of guide rods 21 are different in size.

[0036] When the cables used are of different thicknesses, in order to prevent the water vapor in the mud from penetrating into the lower shell 1 and the upper shell 2, after the lower shell 1 and the upper shell 2 are connected, the second flange 18 is inserted into the complete tube body composed of the upper and lower half connecting tubes 3, and the second flange 18 is fixedly connected to the two halves of the first flange 17, and then the upper and lower half-ring clamps 22 are slid along the guide rod 21 to the side away from each other. At this time, the corresponding second elastic member 23 is compressed and deformed by force, and the cable is passed through the annular hole between the half-ring clamps 22, and the half-ring clamps 22 are loosened. At this time, the second elastic member 23 pushes the two half-ring clamps 22 to slide close together, and multiple groups of half-ring clamps 22 are set to adapt to cables of different thicknesses, so that the half-ring clamps 22 are in close contact with the cables, and the annular holes of the half-ring clamps 22 are sealed. At this time, the soil and water vapor cannot penetrate into the lower shell 1 and the upper shell 2 through the half-connecting tube 3.

[0037] See also Figure 6 , Fig. 9 and Fig.10 As shown, it also includes six second mounting shells 24 installed on the outer wall of the lower shell 1 by bolt connection, and a mounting block 25 is installed in the second mounting shell 24 by welding. A vortex rod 26 is rotatably provided on the mounting block 25, and the vortex rod 26 penetrates to the outside of the second mounting shell 24, and a turbine 27 is rotatably provided at the bottom of the second mounting shell 24, and the turbine 27 cooperates with the vortex rod 26. A slide groove 29 is opened on the inner side wall of the second mounting shell 24, and a sliding plate 30 is slidably provided in the slide groove 29. A threaded drill rod 28 is fixedly connected to the sliding plate 30 by a key, and the threaded drill rod 28 is threadedly connected to the turbine 27, and the threaded drill rod 28 can penetrate to the outer bottom of the second mounting shell 24.

[0038] After the lower shell 1 is put into the ground, the worm shaft 26 is rotated to drive the turbine 27 to rotate, and the turbine 27 drives the threaded drill rod 28 to slide downward along the slide groove 29 through the sliding plate 30, and the threaded drill rod 28 is inserted into the ground to strengthen the installation and fixation of the cable junction box. The threaded drill rod 28 can be retracted into the second installation shell 24 by rotating the worm shaft 26 in the opposite direction.

[0039] See also Figure 2 , Figure 7 , Figure 8 and Fig.10 As shown, a sealing sheet 31 is embedded on the connecting block 5; two upper and lower telescopic sleeves 32 are sleeved on the guide rod 21, and the telescopic sleeves 32 are telescopically extended and retracted as the semi-ring clamp 22 slides, and the second elastic member 23 is located in the telescopic sleeve 32; a sealing ring 33 is embedded in the inner ring of the second flange 18; a rubber ring 34 is embedded at the bottom of the second mounting shell 24, and the rubber ring 34 is located directly below the threaded drill rod 28.

[0040] The sealing sheet 31 is used to protect the screw 6 to prevent the screw 6 from rusting and becoming difficult to rotate; the telescopic sleeve 32 is used to protect the second elastic member 23 from moisture, to prevent the second elastic member 23 from rusting and losing elasticity; the sealing ring 33 is used to enhance the tightness between the second flange 18 and the two semi-connecting pipes 3 to prevent water from seeping in; the rubber ring 34 is broken when the threaded drill rod 28 is passed out, and when the threaded drill rod 28 is retracted into the second mounting shell 24, the rubber ring 34 can scrape off the soil on the threaded drill rod 28 to prevent the soil from being brought into the second mounting shell 24.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An underground cable junction box, comprising a lower shell (1), an upper shell (2), a semi-connecting tube (3), a threaded seat (4), a connecting block (5), a screw (6) and a terminal seat (7), wherein a plurality of threaded seats (4) are mounted on the lower shell (1), a plurality of connecting blocks (5) are mounted on the upper shell (2), screws (6) are threadedly arranged on the connecting blocks (5) and the threaded seats (4), the upper shell (2) and the lower shell (1) together form a cable junction box, a plurality of semi-connecting tubes (3) are fixedly connected to the lower shell (1) and the upper shell (2), a terminal seat (7) is mounted in the lower shell (1), and the cable junction box is characterized in that: The device also comprises a detector (8), a signal transmitter (9), a fire detection tube (10) and a controller (11). The controller (11) and a plurality of detectors (8) are installed in the lower shell (1) and the upper shell (2). The controller (11) is fixedly connected to the fire detection tube (10), and the two fire detection tubes (10) are respectively fixedly connected to the lower shell (1) and the upper shell (2). The signal transmitter (9) is installed on the wiring socket (7). The signal transmitter (9) is connected to the controller (11) by signal, and the detector (8) is connected to the signal transmitter (9) by signal.

2. The underground cable junction box according to claim 1, characterized in that: It also includes a plurality of first mounting shells (12) mounted in the lower shell (1), each surface of the inner wall of the lower shell (1) having two first mounting shells (12), a slider (13) being slidably arranged in the first mounting shell (12), a threaded clamping block (15) being fixedly connected to the slider (13), a first elastic member (14) being fixedly connected between the slider (13) and the first mounting shell (12), and a threaded tightening sleeve (16) being threadedly arranged on each of the two threaded clamping blocks (15).

3. The underground cable junction box according to claim 1, characterized in that: The invention also comprises a first flange (17) mounted on each semi-connecting pipe (3), a second flange (18) being sleeved on the semi-connecting pipes (3) of the lower shell (1) and the upper shell (2), the second flange (18) being fixedly connected to the two first flanges (17) by bolts, a connecting tube (19) being fixedly connected to the second flange (18), an annular baffle (20) being mounted in the connecting tube (19), and a plurality of regulating clamping components for preventing foreign matter from penetrating into the junction box being arranged in the connecting tube (19).

4. The underground cable junction box according to claim 3, characterized in that: The regulating clamp assembly comprises a plurality of guide rods (21) fixedly connected in a connecting tube (19), each guide rod (21) having two guide rods, each guide rod (21) having two semi-ring clamping plates (22) slidably arranged together, two second elastic members (23) for pushing the two semi-ring clamping plates (22) to approach each other are wound around the guide rods (21), and the ring holes of the semi-ring clamping plates (22) on each guide rod (21) have different sizes.

5. The underground cable junction box according to claim 1, characterized in that: The invention also comprises a plurality of second mounting shells (24) mounted on the lower shell (1), a mounting block (25) being mounted in the second mounting shell (24), a vortex rod (26) being rotatably mounted on the mounting block (25), the vortex rod (26) penetrating to the outside of the second mounting shell (24), a turbine (27) being rotatably mounted in the second mounting shell (24), the turbine (27) cooperating with the vortex rod (26), a slide groove (29) being provided in the second mounting shell (24), a sliding plate (30) being slidably mounted in the slide groove (29), a threaded drill rod (28) being fixedly connected to the sliding plate (30), the threaded drill rod (28) being threadably connected to the turbine (27), and the threaded drill rod (28) being capable of penetrating to the outside of the second mounting shell (24).

6. The underground cable junction box according to claim 1, characterized in that: A sealing sheet (31) is embedded in the connection block (5).

7. The underground cable junction box according to claim 4, characterized in that: Two telescopic sleeves (32) are sleeved on the guide rod (21), and the second elastic member (23) is located inside the telescopic sleeves (32).

8. The underground cable junction box according to claim 3, characterized in that: A sealing ring (33) is embedded in the inner ring of the second flange (18).

9. The underground cable junction box according to claim 5, characterized in that: A rubber ring (34) is embedded in the bottom of the second mounting shell (24), and the rubber ring (34) is located directly below the threaded drill rod (28).

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