CN115764780A - Underground cable protector - Google Patents

Abstract

The invention relates to the technical field of cable protection, in particular to an underground cable protection device. Including the protective housing that the symmetry set up, sliding connection has the fixed plate in the protective housing, fixed plate middle part rigid coupling has the installation cover, the fixed plate rotates and is connected with the annular frame with installation cover sliding fit, the rigid coupling has the installation section of thick bamboo in the annular frame, the rigid coupling has the connection pad in the annular frame, the connection pad is located between installation cover and the installation section of thick bamboo, the rigid coupling has the fixed disk in the installation section of thick bamboo, connection pad circumference equidistance is provided with the arc wall, fixed disk circumference equidistance is provided with the spout, the arc wall of connection pad and the spout sliding connection of adjacent fixed disk have the slide bar, the slide bar rigid coupling has the clamping piece, the rigid coupling has the section of thick bamboo of moulding plastics in the installation section of thick bamboo. According to the invention, the pre-tightening cables are closed through the clamping piece, so that the two cables are prevented from being in virtual connection or disconnection due to axial tension caused by the change of a geological structure, the firmness of the joint of the two cables is improved through the rotating fit of the threaded rod and the threaded pipe, and the condition that the two cables are in virtual connection or disconnection is avoided.

Description

Underground cable protector

Technical Field

The invention relates to the technical field of cable protection, in particular to an underground cable protection device.

Background

The cable is used for power or signal transmission, and the power cable is used for power transmission in power distribution, transmission, transformation and supply lines.

In order to ensure long-distance transmission of electric energy, the cables need to be continuously contacted to prolong the transmission distance of the electric energy, the existing power cables are buried underground in a soil covering mode after being continuously contacted, but axial tension is applied to the two power cables when the soil geological structure of the buried position is changed, and the cables are only covered in the soil covering mode and are not fixed when being buried, so that the continuous contact position of the two cables is easy to be in virtual contact or disconnected under the action of the axial tension caused by the change of the geological structure to influence the transmission of the electric energy, and in rainy days, after the permeated rainwater is contacted with the continuous contact position of the cables, short circuit is caused to influence the transmission.

Disclosure of Invention

The present invention provides an underground cable protection device to solve the problems set forth in the background art.

An underground cable protection device comprises protection shells which are symmetrically arranged, wherein fixed plates are slidably connected in the protection shells, installation sleeves are fixedly connected in the middle of the fixed plates, the fixed plates are rotatably connected with annular frames which are in sliding fit with the installation sleeves, installation cylinders are fixedly connected in the annular frames, connection discs are fixedly connected in the annular frames and are positioned between the installation sleeves and the installation cylinders, fixed discs are fixedly connected in the installation cylinders, arc-shaped grooves are formed in the connection discs at equal intervals in the circumferential direction, sliding grooves are formed in the fixed discs at equal intervals in the circumferential direction, sliding rods are slidably connected with the arc-shaped grooves of the connection discs and the sliding grooves of the adjacent fixed discs, clamping pieces are fixedly connected with the sliding rods, injection molding cylinders are fixedly connected in the installation cylinders and are positioned on the inner sides of the symmetrically arranged connection discs, annular frame subtend is provided with the sliding tray, sliding connection has the telescopic link in the sliding tray, adjacent telescopic link rigid coupling has the ring gear, a side installation section of thick bamboo circumferential direction is connected with the threaded rod, opposite side installation section of thick bamboo circumferential direction is connected with the screwed pipe with threaded rod complex, threaded rod and the equal rigid coupling in screwed pipe looks back end have with adjacent ring gear engaged with drive gear, the installation section of thick bamboo opposite side that the symmetry formula set up all is provided with sealed the pad, the arc wall of connection pad and the spout cooperation of adjacent fixed disk, the clamping piece that makes circumference set up draws close with fixed cable mutually, and draw close through adjacent threaded rod and screwed pipe screw-thread fit, increase the fastness of two continuous departments of connecting of cable.

Further, the opposite sides of the symmetrically arranged mounting sleeves are provided with hemispherical grooves for guiding underground water seepage.

Further explaining, the arc-shaped grooves of the connecting discs which are symmetrically arranged are opposite in inclination direction and are used for moving the clamping piece to fix the cable.

Further, the inner side faces of the clamping pieces arranged in the circumferential direction are provided with elastic contact blocks for limiting the movement of the cable.

Further, the mounting cylinder on one side is provided with a convex block, the mounting cylinder on the other side is provided with a groove matched with the convex block, the injection molding cylinder on one side is provided with a convex block, and the injection molding cylinder on the other side is provided with a groove matched with the convex block.

Further, the lower parts of the same-side installation barrel and the injection molding barrel are provided with feed inlets, the upper parts of the other-side installation barrel and the injection molding barrel are provided with discharge outlets, one side installation barrel is provided with a conveying pipe communicated with the feed inlets, the other side installation barrel is provided with a conveying pipe communicated with the discharge outlets, the conveying pipe is provided with a sealing cover, and the injection molding barrel is fixedly connected with a stirring plate in sliding fit with the installation barrel.

Further, the sealing ring is symmetrically arranged and arranged in the mounting sleeve and used for preventing underground water seepage from immersing into the mounting sleeve.

Further, the cable connector further comprises a circumferentially arranged extrusion plate, the extrusion plate is fixedly connected to the sliding rod of the clamping piece, and the extrusion plate is in sliding connection with the sealing ring and used for extruding the sealing ring to be in tight contact with the cable.

Further, the extrusion plates are arc-shaped, and the extrusion plates arranged in the circumferential direction are matched to be circular and used for increasing the contact area between the extrusion plates and the sealing ring.

Further explaining, the cable further comprises conducting strips which are symmetrically arranged, the conducting strips are connected to the cable electrifying position in a sliding mode, a through hole is formed in the lower portion of the injection molding barrel, an insulating sleeve is arranged in the through hole of the injection molding barrel, the conducting strips are fixedly connected with conducting blocks matched with the insulating sleeve, an alarm is fixedly connected to the upper portion of one side installation barrel and is connected with the other side installation barrel in a sliding mode, wires are arranged at two ends of the alarm, conducting assemblies in sliding fit with adjacent installation barrels are arranged on the wires, and each conducting assembly is provided with an elastic conducting rod.

According to the invention, the cables are closed and pre-tightened through the clamping piece, so that the two cables are prevented from being connected or disconnected in a virtual manner by axial tension caused by the change of a geological structure.

Through threaded rod and screwed pipe rotation opposite direction and cooperation, make the clamping piece of the left and right sides drive two cables and draw close together mutually, increase the fastness of two continuous junctions of cable, avoid two cables to have the condition of virtual joint or disconnection.

Through from up injecting the plastic envelope injection molding agent in to the section of thick bamboo of moulding plastics down, discharge the air gradually, avoid influencing the plastic envelope of plastic envelope injection molding agent to two cable splicing because of having the bubble in the model of moulding plastics, and through two cable splicing plastic envelope, can increase the fastness of two cable splicing, avoid two cables to make its virtual connecing or disconnection at the axial tension that arouses when the geological structure changes.

The four clamping pieces move towards the axial lead of the cable to drive the extrusion plate to extrude the sealing ring, so that the sealing performance between the sealing ring and the cable is improved, and the cable splicing part is prevented from being short-circuited when meeting water.

The alarm gives an alarm to inform the accurate position of maintenance after the cable is powered off, so that the detection time of the cable power-off position is shortened.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic sectional perspective view of the present invention.

Fig. 3 is a schematic cross-sectional perspective view of the cable clamping component of the present invention.

FIG. 4 is a schematic perspective view of the mounting barrel and the injection molding barrel of the present invention.

FIG. 5 is a schematic diagram of the three-dimensional structure of the grooves of the mounting barrel and the injection molding barrel of the present invention.

Fig. 6 is a schematic perspective view of the connecting disc, the fixing disc and the clamping member of the present invention.

Fig. 7 is a schematic rear sectional perspective view of the present invention.

Fig. 8 is an enlarged perspective view of the invention at a.

Fig. 9 is a schematic perspective view of the conductive assembly and the elastic conductive rod according to the present invention.

The meaning of the reference symbols in the figures: 1-a fixed plate, 2-a protective shell, 3-a mounting sleeve, 4-an annular frame, 5-a mounting cylinder, 6-a connecting disc, 7-a fixed disc, 8-a clamping piece, 9-an injection molding cylinder, 10-a telescopic rod, 11-an inner gear ring, 12-a threaded rod, 13-a threaded pipe, 14-a transmission gear, 15-a sealing pad, 16-a conveying pipe, 17-a sealing cover, 18-a stirring plate, 19-a sealing ring, 20-a squeezing plate, 21-a conducting plate, 22-an insulating sleeve, 23-a conducting block, 24-an alarm, 25-a conducting wire, 26-a conducting component, 27-an elastic conducting rod and 28-a cable.

Detailed Description

The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for completeness and fully convey the scope of the invention to the skilled person.

Example 1

An underground cable protection device is disclosed, as shown in fig. 1-7, comprising two protection shells 1 which are symmetrically distributed left and right, a fixed plate 2 is connected in the protection shells 1 in a sliding way, a mounting sleeve 3 is fixedly connected in the middle of the fixed plate 2, hemispherical grooves are arranged on the back sides of the mounting sleeves 3 on the left side and the right side, underground water seepage in the mounting sleeves 3 is guided by the cambered surfaces of the hemispherical grooves, annular frames 4 which are matched with the adjacent mounting sleeves 3 in a sliding way are rotatably connected on the opposite sides of the symmetrically distributed fixed plates 2, mounting cylinders 5 are fixedly connected in the annular frames 4, connecting discs 6 are fixedly connected in the annular frames 4, the connecting discs 6 are positioned between the mounting sleeves 3 and the mounting cylinders 5, fixed discs 7 are fixedly connected in the mounting cylinders 5, the connecting discs 6 are provided with four arc grooves which are equidistantly distributed in the circumferential direction, the inclination directions of the arc grooves of the connecting discs 6 on the left side and the right side are opposite, the arc groove of the connecting disc 6 on the right side is inclined counterclockwise (taking the right view direction of fig. 2 as the reference), the arc-shaped groove of the connecting disc 6 on the left side inclines upwards clockwise (taking the right view direction of figure 2 as a reference), the fixed disc 7 is provided with sliding grooves with the same number as the arc-shaped grooves, four sliding grooves are arranged to be distributed at equal intervals in the circumferential direction, the arc-shaped groove of the connecting disc 6 and the sliding groove of the adjacent fixed disc 7 are connected with sliding rods in a sliding mode, the sliding rods are fixedly connected with the clamping pieces 8, the inner side faces of the four clamping pieces 8 distributed at equal intervals in the circumferential direction are provided with elastic contact blocks, the clamping pieces 8 are positioned between the adjacent connecting disc 6 and the fixed disc 7, the arc-shaped groove of the connecting disc 6 is matched with the sliding grooves of the fixed disc 7, so that the four clamping pieces 8 are close to the axial lead of the cable 28, the clamping pieces 8 continuously move after being contacted with the cable 28, the elastic contact blocks are deformed to increase the friction force between the elastic contact blocks and the cable 28, and the pre-tightening work of the cable 28 is completed, an injection molding barrel 9 is fixedly connected in the installation barrel 5, the injection molding barrel 9 is positioned between the connecting discs 6 on the left side and the right side, the annular frame 4 is provided with two sliding grooves which are distributed oppositely, telescopic rods 10 are connected in the sliding grooves of the annular frame 4 in a sliding manner, inner gear rings 11 are fixedly connected to the telescopic rods 10 on the front side and the rear side, the installation barrel 5 on the left side is rotatably connected with four threaded rods 12 which are distributed circumferentially at equal intervals, the installation barrel 5 on the right side is rotatably connected with threaded pipes 13 which have the same number with the threaded rods 12, the back ends of the threaded rods 12 and the threaded pipes 13 are fixedly connected with transmission gears 14 which are meshed with the adjacent inner gear rings 11, sealing gaskets 15 are arranged on opposite sides of the installation barrels 5 on the left side and the right side, the threaded rods 12 and the threaded pipes 13 which are adjacent on the left side and the right side rotate and are in threaded matching, the threaded rods 12 and the threaded pipes 13 which are adjacent on the left side and the right side are adjacent to each other, the rotation directions of the threaded rods 12 and the threaded pipes 13 are opposite, so that the installation barrels 5 on the left side and the right side are close to increase the firmness of the continuous joint of two cables, and avoid the condition that two cables 28 are connected or disconnected.

As shown in fig. 4 and 5, the installation section of thick bamboo 5 of the left and right sides sets up to pegging graft, 5 right flank circumference equidistance of left side installation section of thick bamboo are provided with the lug, 5 left flank circumference equidistance of right side installation section of thick bamboo is provided with the recess the same with lug quantity, the lug of left side installation section of thick bamboo 5 cooperates with the recess of right side installation section of thick bamboo 5, realize the sealed cooperation of the installation section of thick bamboo 5 of the left and right sides, the section of thick bamboo 9 of moulding plastics of the left and right sides sets up to pegging graft, 9 right flank circumference equidistance of the left side section of thick bamboo of moulding plastics of the left side is provided with the lug, 9 left flank circumference equidistance of the right side section of thick bamboo of moulding plastics of the right side is provided with the recess cooperation of the section of thick bamboo 9 of moulding plastics of the right side, realize the sealed cooperation of the section of thick bamboo 9 of moulding plastics of the left and right sides.

As shown in fig. 2, the lower parts of the left installation cylinder 5 and the injection cylinder 9 are provided with feed inlets, the upper parts of the right installation cylinder 5 and the injection cylinder 9 are provided with discharge outlets, the left installation cylinder 5 is provided with a conveying pipe 16 communicated with the feed inlets, the right installation cylinder 5 is provided with a conveying pipe 16 communicated with the discharge outlets, the conveying pipe 16 is provided with a sealing cover 17, the injection cylinder 9 is fixedly connected with a toggle plate 18 in sliding fit with the installation cylinder 5, a plastic package injection agent is injected into the injection cylinder 9 through the conveying pipe 16 at the lower side and the feed inlets, air in the injection cylinder 9 is discharged through the discharge outlets and the conveying pipe 16 at the upper side, and the influence on the plastic package at the continuous joint of two cables 28 caused by the air bubbles in the injection mold is avoided.

When the cables 28 are connected, a user inserts the two cables 28 into the mounting sleeves 3, the connecting discs 6, the mounting cylinders 5 and the fixed disc 7 on the left side and the right side respectively, opposite ends of the two cables 28 are located in the left injection cylinder 9 and the right injection cylinder 9 respectively, the user keeps the two protective housings 1 away and makes the two mounting cylinders 5 close together, the user seals a continuous joint of the two cables 28 through the protective sleeves, the threaded rod 12 and the threaded pipe 13 are in a contact state at the moment, the user enables the rotation directions of the two inner gear rings 11 to be opposite, the left inner gear ring 11 rotates to enable the left transmission gear 14 to rotate, the right inner gear ring 11 rotates to enable the right transmission gear 14 to rotate, the transmission gears 14 on the left side and the right side rotate to enable the adjacent threaded rod 12 and the threaded pipe 13 to be matched in a rotating mode, the adjacent threaded rod 12 and the threaded pipe 13 close together to drive the mounting cylinders 5 on the inner gear ring to move, and the inner gear ring 11 rotates to enable the telescopic rod 10 to rotate.

When the telescopic rod 10 rotates to abut against the sliding groove of the annular frame 4, a user enables the left inner gear ring 11 and the right inner gear ring 11 to be far away from each other and continuously rotate in the opposite direction, the telescopic rod 10 drives the installation cylinder 5 and the connection disc 6 through the annular frame 4, the installation cylinder 5 can drive the fixed disc 7 to rotate while rotating, the arc-shaped groove of the connection disc 6 is matched with the sliding groove of the fixed disc 7, the four clamping pieces 8 which are distributed circumferentially at equal intervals are close to the axial lead of the cable 28, the inner side surfaces of the clamping pieces 8 are provided with elastic contact blocks, when the clamping pieces 8 are in contact with the cable 28 through the elastic contact blocks, the inner gear rings 11 are continuously rotated, the contact area of the elastic contact blocks and the cable 28 is increased, so that the friction force on the cable 28 is increased, the positioning and pre-tightening on the cable 28 are realized, and the virtual connection or disconnection of the two cables 28 caused by axial tension when the geological structure is prevented from being changed.

The user resets the inner gear ring 11, engages with the transmission gear 14 and continues to rotate, the adjacent threaded rods 12 are matched with the threaded pipes 13, the left and right adjacent mounting cylinders 5 are close to each other and are in tight contact, the sealing of the two mounting cylinders 5 is realized through the sealing gaskets 15, in the process, the adjacent mounting cylinders 5 are close to each other, the clamping pieces 8 on the left and right sides are close to each other, the cables 28 are fixed by the clamping pieces 8 on the left and right sides and are close to each other, the firmness of the continuous joint of the two cables 28 is improved, and the contact insecure of the continuous joint of the two cables is avoided.

After the two cables 28 are continuously connected and fixed, a user takes the sealing cover 17 off the conveying pipe 16, plastic package injection molding agent is injected into the injection molding barrel 9 through the conveying pipe 16 on the lower side and the feeding hole, air in the injection molding barrel 9 is then exhausted through the discharging hole and the conveying pipe 16 on the upper side, bubbles in an injection molding model are avoided, when the plastic package injection molding agent is moved out through the discharging hole, the user stops injecting the plastic package injection molding agent into the conveying pipe 16 on the lower side, the sealing cover 17 is reset, the user fixes the two protective shells 1 through the bolts, and seals and protects the continuous joints of the two cables 28 through the continuous joints of the two cables 28, so that the two cables 28 are prevented from being short-circuited when meeting water due to corrosion of underground water seepage, meanwhile, the continuous joints of the two cables 28 are firmer, and the two cables 28 are prevented from being connected or disconnected due to axial tension caused by changes of geological mechanisms, and transmission of electric energy is prevented from being influenced.

Example 2

On the basis of the embodiment 1, as shown in fig. 3, the cable further comprises two sealing rings 19 which are distributed in bilateral symmetry, and the sealing rings 19 are arranged in the mounting sleeve 3 and are used for preventing underground water from flowing into the sealing rings 19 and contacting with the joints of the two cables to cause short circuit of the cables.

As shown in fig. 3, the cable clamping device further includes a pressing plate 20 disposed circumferentially, the pressing plate 20 is fixedly connected to the sliding rod of the clamping member 8, the pressing plate 20 is slidably connected to the sealing ring 19, and is used for pressing the sealing ring 19 to be in close contact with the cable 28, the pressing plate 20 is disposed in an arc shape, and the pressing plate 20 disposed circumferentially is matched to be in a circular shape, so as to increase the contact area between the pressing plate 20 and the sealing ring 19.

At the beginning, sealing ring 19 is not extruded, and sealing ring 19 this moment is convenient for cable 28 to pass, and in the axial lead removal in-process of four clamping pieces 8 that circumference distributes to cable 28, clamping piece 8 can drive stripper plate 20 and remove, and stripper plate 20 removes extrusion sealing ring 19, increases the leakproofness between sealing ring 19 and the cable 28, realizes pressing from both sides tight simultaneously and sealed to cable 28 through above-mentioned mode, avoids in secret infiltration entering installation section of thick bamboo 5, leads to the cable to continue to connect the department short circuit to meet water.

Example 3

On the basis of embodiment 2, as shown in fig. 2 and fig. 7-9, the electric cable injection molding device further comprises conducting strips 21 which are symmetrically distributed left and right, the conducting strips 21 are slidably connected to a power-on position of a cable 28, a through hole is formed in the lower portion of the injection molding barrel 9, an insulating sleeve 22 is arranged in the through hole of the injection molding barrel 9, a conducting block 23 which is matched with the insulating sleeve 22 is fixedly connected to the conducting strips 21, an alarm 24 is fixedly connected to the upper portion of the left installation barrel 5, the alarm 24 is slidably connected with the right installation barrel 5, wires 25 are arranged at the left end and the right end of the alarm 24, a conducting component 26 which is slidably matched with the adjacent installation barrel 5 is arranged on each wire 25, and an elastic conducting rod 27 is arranged on each conducting component 26.

After the two cables 28 are connected, at the moment, the electric power is in a path state, and after injection molding is completed, a user rotates the toggle plate 18 to enable the injection molding barrel 9 to rotate anticlockwise (taking the right view of fig. 6 as a reference), the injection molding barrel 9 rotates to enable a feed inlet and a discharge outlet on the injection molding barrel 9 to be far away from a feed inlet and a discharge outlet of the installation barrel 5, sealing work on the injection molding barrel 9 is achieved, the injection molding barrel 9 rotates to drive the conductive block 23 to move circumferentially, when the conductive block 23 is aligned with the elastic conductive rod 27, the elastic conductive rod 27 moves under the self action to be in contact with the conductive block 23, the electric power of the cables 28 enables the alarm 24 to work through the conductive block 23, the elastic conductive rod 27, the conductive component 26 and the conducting wire 25, when the two cables 28 are disconnected and cannot form a path, the alarm 24 does not work any more at the moment and gives an alarm to prompt that the accurate position of the cables need to be maintained, and assists maintenance personnel to carry out emergency repair work on the cables quickly.

The above-mentioned embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and therefore, all equivalent changes made by the contents of the claims of the present invention should be included in the claims of the present invention.

Claims (10)

1. An underground cable protection device is characterized by comprising symmetrically arranged protective housings (1), wherein a fixed plate (2) is connected in the protective housings (1) in a sliding manner, a mounting sleeve (3) is fixedly connected to the middle part of the fixed plate (2), the fixed plate (2) is rotatably connected with an annular frame (4) in sliding fit with the mounting sleeve (3), a mounting cylinder (5) is fixedly connected in the annular frame (4), a connecting disc (6) is fixedly connected in the annular frame (4), the connecting disc (6) is positioned between the mounting sleeve (3) and the mounting cylinder (5), a fixed disc (7) is fixedly connected in the mounting cylinder (5), arc-shaped grooves are arranged at equal intervals in the circumferential direction of the connecting disc (6), sliding grooves are arranged at equal intervals in the circumferential direction of the fixed disc (7), the arc-shaped grooves of the connecting disc (6) and the sliding grooves of adjacent fixed discs (7) are slidably connected with sliding rods, clamping pieces (8) are fixedly connected with the sliding rods (5), an injection cylinder (9) is fixedly connected in the mounting cylinder (5), the injection cylinder (9) is positioned at the inner side of the symmetrically arranged connecting disc (6), the opposite side of the annular frame (4) is oppositely provided with a sliding groove, a telescopic rod (10) which is connected with a telescopic rod (11) in a sliding manner, and a threaded rod (12) is rotatably connected with a threaded rod (12) which is rotatably connected in the circumferential direction, threaded rod (12) and screwed pipe (13) equal rigid coupling in back of the body end have with adjacent ring gear (11) meshing drive gear (14), installation section of thick bamboo (5) that the symmetry formula set up all are provided with sealed pad (15) to the side in opposite directions, the arc wall of connection pad (6) and the spout cooperation of adjacent fixed disk (7), clamping piece (8) that make circumference set up draw close together with fixed cable (28) mutually, and draw close through adjacent threaded rod (12) and screwed pipe (13) screw-thread fit, increase the fastness of two continuous departments of connecting cable (28).

2. An underground cable protection device according to claim 1, characterised in that the symmetrically arranged mounting sleeves (3) are provided with hemispherical grooves on opposite sides thereof for guiding underground water seepage.

3. An underground cable protection device according to claim 1, characterised in that the arc-shaped slots of the symmetrically arranged connecting discs (6) are inclined in opposite directions for moving the clamping members (8) for fixing the cable (28).

4. An underground cable guard according to claim 3, in which the circumferentially arranged clamping members (8) are provided with resilient contact pads on their inner faces to limit movement of the cable (28).

5. An underground cable protection device according to claim 1, wherein the one side mounting tube (5) is provided with a projection, the other side mounting tube (5) is provided with a groove for engaging with the projection, the one side injection molding tube (9) is provided with a projection, and the other side injection molding tube (9) is provided with a groove for engaging with the projection.

6. An underground cable protection device as claimed in claim 5, wherein the lower parts of the same-side installation barrel (5) and the injection molding barrel (9) are provided with feed inlets, the upper parts of the other-side installation barrel (5) and the injection molding barrel (9) are provided with discharge outlets, the installation barrel (5) on one side is provided with a conveying pipe (16) communicated with the feed inlets, the installation barrel (5) on the other side is provided with a conveying pipe (16) communicated with the discharge outlets, the conveying pipe (16) is provided with a sealing cover (17), and the injection molding barrel (9) is fixedly connected with a stirring plate (18) in sliding fit with the installation barrel (5).

7. An underground cable protection device according to claim 6, further comprising symmetrically arranged sealing rings (19), the sealing rings (19) being arranged in the mounting sleeve (3) for preventing underground water from penetrating into the mounting sleeve (3).

8. An underground cable protection device according to claim 7, further comprising a circumferentially arranged squeeze plate (20), the squeeze plate (20) being fixedly attached to the sliding rod of the clamping member (8), the squeeze plate (20) being slidably connected to the sealing ring (19) for squeezing the sealing ring (19) into tight contact with the cable (28).

9. An underground cable guard according to claim 8, in which the stripper plates (20) are arranged in an arc and the circumferentially arranged stripper plates (20) cooperate in a circular shape to increase the contact area between the stripper plates (20) and the sealing ring (19).

10. An underground cable protection device as claimed in claim 8, further comprising symmetrically arranged conductive sheets (21), wherein the conductive sheets (21) are slidably connected to the power-on position of the cable (28), a through hole is formed in the lower portion of the injection molding cylinder (9), an insulating sleeve (22) is arranged in the through hole of the injection molding cylinder (9), a conductive block (23) matched with the insulating sleeve (22) is fixedly connected to the conductive sheets (21), an alarm (24) is fixedly connected to the upper portion of the installation cylinder (5) on one side, the alarm (24) is slidably connected to the installation cylinder (5) on the other side, both ends of the alarm (24) are provided with wires (25), each wire (25) is provided with a conductive component (26) in sliding fit with the adjacent installation cylinder (5), and each conductive component (26) is provided with an elastic conductive rod (27).

Images