CN112670940B - Cable is prevented digging disconnected slot - Google Patents

Abstract

The invention discloses a cable anti-breaking groove, which comprises a shell, wherein the shell is buried in soil, a plurality of shells are arranged in the soil, the cable anti-breaking groove is equipment capable of preventing a cable from breaking, a sensor is arranged in the device, when the upper side of the cable is constructed, if an excavator bucket of an excavator is close to the device, the device can be automatically started, so that a wire wound on a winding wheel is released by the device, then the device can be fixed with the soil firstly, so that the device is provided with a fixed point, then the device can be started, the position where the cable is kept moves downwards, so that the cable starts to be far away from the excavator bucket, a digging motor is started at the same time, a tunneling device on the lower side of the device starts to dig a channel downwards, a sliding rail is laid downwards, so that the device can move downwards to a position far away from the excavator bucket, the cable is prevented from breaking, and the device can be automatically reset after the excavator bucket is far away, so that the cable can be restored to facilitate maintenance.

Description

Cable anti-digging groove

Technical Field

The invention relates to the field of building construction, in particular to a cable anti-breaking groove.

Background

The building construction refers to production activities in the engineering construction implementation stage, is the construction process of various buildings, and also can be a process of changing various lines on a design drawing into a real object at a specified place. The method comprises foundation engineering construction, main structure construction, roofing engineering construction, decoration engineering construction and the like. The site of the construction work is called a "construction site" or "job site", also called a worksite.

In the construction process of a building, the cable is laid under the ground, so that the cable is easily broken during construction, signals are interrupted, and great social influence is caused.

Disclosure of Invention

In order to solve the above problems, the present embodiment provides a cable anti-break groove, comprising a housing buried in soil, a plurality of housings provided in the soil, each housing connected to each other by a connecting pipe, a cable passing through the connecting pipe from one housing to the other housing for transmitting a signal, a sensor fixedly connected to an upper side of the housing, the sensor being capable of detecting a downward tunneling of a bucket and transmitting an electric signal to the housing, a pulley transmission space provided on an upper right side of the housing, a moving space provided on a lower side of the rotating space, a driving space provided on a lower side of the pulley transmission space, an annular chute provided on an outer side of the driving space, a threaded shaft space provided on a left side of the driving space, a sliding groove provided on a left side of the threaded shaft space, an anti-break device provided between the pulley transmission space and the driving space, a main motor fixedly installed on an upper left side wall of the pulley transmission space, a driving shaft connected to a lower side of the driving shaft, the driving shaft extending downward through the driving shaft space, a second driving shaft extending downward into the driving shaft, a second driving shaft rotatably connected to an upper side of the driving shaft, a second driving shaft, a driving shaft rotatably connected to a driving shaft, the driving shaft with driven shaft downside homoenergetic is flexible, with the left side annular chute is the example, the equal fixedly connected with fixed sliding tray of lateral wall, every about the main space be equipped with the spout in the fixed sliding tray, sliding connection has the screw thread slider in every spout, with left the screw thread slider is the example, this screw thread slider left side is equipped with little space, little space right side wall fixedly connected with telescopic link, the telescopic link can stretch out and draw back, and has elasticity, telescopic link left side fixedly connected with butt slider, the butt slider can extend left and run through in little space left side wall gets into the outer space, the butt slider can act as the slider, butt slider upside is tangential, two fixedly connected with dodges the storehouse between the screw thread slider, it is equipped with wire winding space in the storehouse to dodge, wire winding space with be equipped with anti-sticking pay-off device between the main space, the rotating space with be equipped with fixing device between the removal space, the sliding tray with be equipped with extension device between the screw thread axle space, main space with it dodges and be equipped with excavating gear between the storehouse downside.

Preferably, the fixing device comprises a fixing motor fixedly installed on the left side wall of the moving space, a threaded shaft is in power connection with the right side of the fixing motor, a threaded moving block is connected between the side walls of the moving space in a sliding mode, the threaded moving block extends upwards to penetrate through the side wall of the moving space to enter the rotating space, a rotating fixing screw is rotatably connected to the right side of the threaded moving block, a threaded transmission block is fixedly connected between the side walls of the rotating space, threads are arranged in the threaded transmission block, threads are arranged on the rotating fixing screw, and the rotating fixing screw is in threaded fit with the threaded transmission block.

Preferably, the dead pay-off of anti-sticking is installed including rotating the flexible pivot of lateral wall on the main space, flexible pivot downside can extend, the position that flexible pivot upside can not extend, fixedly connected with second band pulley, the second band pulley with first gear engagement, flexible pivot extends to in the wire winding space, flexible pivot medial side fixedly connected with cable winding wheel, flexible pivot downside fixedly connected with belt pulley, it is connected with the minor axis to rotate between the lateral wall about the wire winding space, the minor axis is from last to fixedly connected with in proper order down cable winding wheel and belt pulley, be equipped with the area between the belt pulley, when flexible pivot rotates, can make cable winding wheel emits the cable, provides the space for subsequent motion.

Preferably, the extending device comprises a rotating screw rotatably mounted between the side walls of the threaded shaft space, a first meshing gear is fixedly connected to the lower side of the rotating screw, threads are arranged on the upper side of the rotating screw, the left side wall of the threaded shaft space is slidably connected with a connecting block, the connecting block extends leftwards to penetrate through the left side wall of the threaded shaft space to enter the sliding groove, a connecting sliding block is fixedly connected to the left side of the connecting block, a built-in sliding groove is arranged on the left side of the connecting sliding block, an extending sliding block is slidably connected in the built-in sliding groove, the extending sliding block extends rightwards to penetrate through the right side wall of the built-in sliding groove to enter the sliding groove, a first fixing part is fixedly connected to the right side wall of the sliding groove, a second fixing part is fixedly connected to the front side of the extending sliding block, rotating wheels are rotatably connected to the upper side and the lower side of the connecting sliding block, and connecting wires are arranged between the rotating wheels, the left side of the connecting wire is fixedly connected with the second fixing piece, the right side of the connecting wire is fixedly connected with the first fixing piece, an annular chute is connected between the side walls of the annular chutes in a sliding manner, the annular chute is annular and can shield a space excavated by a tunneling knife through an annular space to prevent external earth from invading again, springs are fixedly connected between the lower side of the annular chute and the lower side wall of the annular chute, the annular chute extends downwards to penetrate through the lower side wall of the annular chute into an outer space, the inner side of the annular chute is also a chute, the annular chute can be in sliding fit with the abutting sliding block, a fixed descending plate is fixedly connected among the annular chute, the driving shaft, the driven shaft and the extending sliding block, and a telescopic connecting shaft is fixedly connected between the upper side of the fixed descending plate and the lower side of the shell, the telescopic connecting shaft can stretch out and draw back, and is provided with a spring which can stretch out and draw back.

Preferably, excavating gear includes fixed mounting and is in the tunnelling motor of avoiding the storehouse downside, tunnelling motor downside power is connected with flexible driving shaft, flexible driving shaft downwardly extending runs through in the outer space is advanced to the lateral wall under the main space, the main space directly communicates with each other with the external world, flexible driving shaft downside with fixed decline board rotates and connects, the flexible driving shaft does not stretch out and draw back partial fixedly connected with second meshing gear, second meshing gear with first meshing gear meshing, flexible driving shaft downside fixedly connected with tunnelling device casing, be equipped with the gear space in the tunnelling device casing, lateral wall power is connected with the initiative transmission shaft on the gear space, initiative transmission shaft downside fixedly connected with main meshing gear, evenly be equipped with six connecting axles, every on the circumference of gear space all downwardly extending runs through in the outer space is advanced to the lateral wall under the gear space, the connecting axle drives gear and tunnelling cutter to fixedly connected with in proper order extremely down, the tunnelling cutter is in the initial state, main meshing gear with drive gear meshing, main meshing gear rotates, can make the tunnelling cutter open the width under the state with the width of shell is similar, can a tunnelling shell downside in the soil.

The invention has the beneficial effects that: the invention relates to equipment capable of preventing a cable from being dug and broken, which is provided with a sensor, wherein when the upper side of the cable is constructed, if a digging bucket of a digging machine is close to the device, the device can be automatically started to enable the device to wind a wire wound on a winding wheel to be discharged, then the device can be fixed with soil firstly, so that the device is provided with a fixed point, then the device can be started to drive the position where the cable is reserved to move downwards, so that the cable is far away from the digging bucket, meanwhile, a digging motor is started, a tunneling device on the lower side of the device starts to dig a channel downwards, a sliding rail is laid downwards, so that the device can move downwards to a position far away from the digging bucket, the digging and breaking are prevented, and when the digging bucket is far away, the device can be automatically reset, so that the cable returns to the original position, and the maintenance is convenient.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

The invention is further illustrated by the following examples in conjunction with the drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 isbase:Sub>A schematic view of the structure A-A of FIG. 1;

FIG. 3 is an enlarged schematic view of B of FIG. 1;

FIG. 4 is an enlarged schematic view of C in FIG. 1;

fig. 5 is an enlarged schematic view of D in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are defined as follows: the up, down, left, right, and front-back directions described below coincide with the up, down, left, right, and front-back directions in the projection relation of fig. 1 itself.

The invention relates to a cable anti-breaking groove, which comprises shells 11, wherein the shells 11 are buried in soil, a plurality of shells 11 are arranged in the soil, each shell 11 is connected through a connecting pipeline 17, a cable enters the other shell 11 from one shell 11 through the connecting pipeline 17 so as to transmit signals, a sensor 19 is fixedly connected to the upper side surface of each shell 11, the sensor 19 can detect that an excavator bucket digs downwards so as to send an electric signal to the shell 11, a belt wheel transmission space 12 is arranged on the upper side of each shell 11, a rotating space 13 is arranged on the upper right side of each shell 11, a moving space 14 is arranged on the lower side of each rotating space 13, a main space 15 is arranged on the lower side of each belt wheel transmission space 12, an annular sliding groove 18 is arranged on the outer side of each main space 15, and a threaded shaft space 44 is arranged on the left side of each main space 15, the threaded shaft space 44 is provided with a sliding groove 48 on the left, an anti-breaking device 102 is arranged between the belt wheel transmission space 12 and the main space 15, the anti-breaking device 102 comprises a main motor 20 fixedly mounted on the upper left side wall of the belt wheel transmission space 12, a driving shaft 21 is connected to the lower side of the main motor 20 in a power mode, the driving shaft 21 extends downwards to penetrate through the lower side wall of the belt wheel transmission space 12 to enter the main space 15, the driving shaft 21 can extend downwards to the outer space, the driving shaft 21 is fixedly connected with a first belt wheel 22 and a first gear 31 from top to bottom in sequence, threads are arranged on the lower side of the driving shaft 21, the upper right side wall of the belt wheel transmission space 12 is rotatably connected with a driven shaft 24, the driven shaft 24 can extend into the outer space as well as the driving shaft 21, and a second belt wheel 25 is fixedly connected to the upper side of the driven shaft 24, second band pulley 25 with be equipped with belt 23 between the first band pulley 22, driven shaft 24 downside is equipped with the screw thread, driving shaft 21 with driven shaft 24 downside homoenergetic is flexible, with the left side annular chute 18 is the example, the equal fixedly connected with fixed sliding tray 64 of lateral wall about main space 15, every be equipped with the spout in the fixed sliding tray 64, sliding connection has screw thread slider 63 in every spout, with left side screw thread slider 63 is the example, this screw thread slider 63 left side is equipped with little space 65, little space 65 right side wall fixedly connected with telescopic link 66, telescopic link 66 can stretch out and draw back, and has elasticity, telescopic link 66 left side fixedly connected with butt slider 67, butt slider 67 can extend through to left in little space 65 left side wall gets into outer space, butt slider 67 can act as the slider, butt slider 67 upside is tangential, two fixedly connected with between the screw thread slider 63 dodges storehouse 34, be equipped with wire winding space 35 in dodging storehouse 34, wire winding space 35 with be equipped with anti-sticking pay-off device 103 between main space 15, rotating space 13 with remove space 101 between 14, be equipped with screw thread device 105 and the extension device 104 between the main space 15, main space 15 and the lower side face extension device is equipped with excavation device.

Beneficially, the fixing device 101 includes a fixed motor 26 fixedly installed on the left side wall of the moving space 14, a threaded shaft 27 is dynamically connected to the right side of the fixed motor 26, a threaded moving block 28 is slidably connected between the side walls of the moving space 14, the threaded moving block 28 extends upwards to penetrate through the side wall of the moving space 14 and enter the rotating space 13, a rotating fixing screw 29 is rotatably connected to the right side of the threaded moving block 28, a threaded transmission block 30 is fixedly connected between the side walls of the rotating space 13, a thread is arranged in the threaded transmission block 30, a thread is arranged on the rotating fixing screw 29, and the rotating fixing screw 29 is in threaded fit with the threaded transmission block 30.

Beneficially, anti-sticking dead pay-off 103 installs including rotating the flexible pivot 33 of lateral wall on the main space 15, flexible pivot 33 downside can extend, the position that flexible pivot 33 upside can not extend, fixedly connected with second band pulley 32, second band pulley 32 with first gear 31 meshes, flexible pivot 33 extends to in the winding space 35, side fixedly connected with cable winding wheel 37 in the flexible pivot 33, flexible pivot 33 downside fixedly connected with belt pulley 70, it is connected with minor axis 36 to rotate between the lateral wall about the winding space 35, minor axis 36 is from last to lower in proper order fixedly connected with cable winding wheel 37 and belt pulley 70, be equipped with belt 71 between the belt pulley 70, when flexible pivot 33 rotates, can make cable winding wheel 37 emits cable 38, provides the space for subsequent motion.

Advantageously, the extension device 104 comprises a rotary screw 45 rotatably mounted between the side walls of the threaded shaft space 44, a first meshing gear 47 is fixedly connected to the lower side of the rotary screw 45, threads are arranged on the upper side of the rotary screw 45, the left side wall of the threaded shaft space 44 is slidably connected with a connecting block 46, the connecting block 46 extends leftwards to penetrate through the left side wall of the threaded shaft space 44 to enter the sliding groove 48, a connecting slide block 49 is fixedly connected to the left side of the connecting block 46, a built-in sliding groove 80 is arranged on the left side of the connecting slide block 49, an extension slide block 54 is slidably connected in the built-in sliding groove 80, the extension slide block 54 extends rightwards to penetrate through the right side wall of the built-in sliding groove 80 to enter the sliding groove 48, a first fixing member 51 is fixedly connected to the right side wall of the sliding groove 48, and a second fixing member 52 is fixedly connected to the front side of the extension slide block 54, the upper side and the lower side of the connecting sliding block 49 are rotatably connected with rotating wheels 50, connecting lines 53 are arranged between the rotating wheels 50, the left side of each connecting line 53 is fixedly connected with the second fixing piece 52, the right side part of each connecting line 53 is fixedly connected with the first fixing piece 51, an annular sliding groove 68 is slidably connected between the side walls of the annular sliding grooves 18, each annular sliding groove 68 is annular and can shield the space excavated by the excavating cutter 59 through an annular space to prevent external soil from re-invading, a spring is fixedly connected between the lower side of each annular sliding groove 68 and the lower side wall of each annular sliding groove 18, each annular sliding groove 68 extends downwards to penetrate through the lower side wall of each annular sliding groove 18 to enter the external space, each annular sliding groove 68 is also a sliding groove, each annular sliding groove 68 can be in sliding fit with the abutting sliding block 67, and each annular sliding groove 68, the driving shaft 21, the driven shaft 24 and the extension sliding block 54 are fixedly connected with a fixed descending plate 42, the upper side of the fixed descending plate 42 is fixedly connected with a telescopic connecting shaft 43 between the lower side surfaces of the shells 11, and the telescopic connecting shaft 43 can stretch out and draw back, is provided with a spring and can stretch out and draw back.

Beneficially, excavating gear 105 includes fixed mounting in the tunnelling motor 39 of dodging the downside of storehouse 34, tunnelling motor 39 downside power is connected with flexible driving shaft 40, flexible driving shaft 40 downwardly extending runs through in the outer space is advanced to main space 15 downside wall, main space 15 directly communicates with each other with the external world, flexible driving shaft 40 downside with fixed decline board 42 rotates and connects, flexible driving shaft 40 is not flexible partial fixedly connected with second meshing gear 41, second meshing gear 41 with first meshing gear 47 meshes, flexible driving shaft 40 downside fixedly connected with tunnelling device casing 60, be equipped with gear space 62 in the tunnelling device casing 60, side wall power is connected with driving transmission shaft 55 on gear space 62, driving transmission shaft 55 downside fixedly connected with main meshing gear 56, evenly be equipped with six connecting axles 57 on the gear space 62 circumference, every connecting axle 57 all extends downwards and runs through in gear space 62 downside wall advances in the outer space, connecting axle 57 is from last to driving gear 58 and tunnelling cutter 59 in proper order, tunnelling cutter 59 is in the beginning to be in the contraction state, main meshing gear 56 with driving gear 59, drive gear 59 opens the tunnelling cutter width under the driving cutter width of the driving shell 11 is similar to the tunnelling cutter width of the meshing width of the driving shell 11, can open.

The use steps herein are described in detail below with reference to fig. 1-5:

in the initial state, the heading device casing 60 is located at the upper side, the threaded slider 63 is located at the uppermost side, the rotating fixing screw 29 is located at the leftmost side, the cable 38 is in the tightened state, the fixed descending plate 42 is located at the uppermost side, the connecting block 46 is located at the uppermost side, the extending slider 54 is located at the uppermost side, the abutting slider 67 is located in the space of the small space 65, at this time, the abutting slider 67 is in sliding fit with the fixed sliding groove 64, and the motor is in the standby state.

When a bucket approaches the sensor 19, at this time, the sensor 19 detects that the bucket approaches the housing 11, the fixing motor 26 is firstly started, so that the threaded shaft 27 rotates, the threaded moving block 28 moves to the right, the rotating fixing screw 29 passes through the threaded driving block 30, and under the action of the threaded driving block 30, the rotating fixing screw 29 rotates, so that the rotating fixing screw 29 rotates into soil to play a fixing role.

After the fixing is completed, the tunneling motor 39 in the housing 11 is started in the forward direction at this time, so that the telescopic driving shaft 40 rotates, and the second meshing gear 41 and the tunneling device housing 60 rotate, the driving transmission shaft 55 is started first before the process, so that the main meshing gear 56 rotates by a certain angle, each connecting shaft 57, the driving gear 58 and the tunneling cutter 59 rotate by a certain angle, and the tunneling cutter 59 is opened, so that the range of the tunneling cutter 59 is the same as the width of the lower side surface of the housing 11, at this time, the tunneling device housing 60 rotates, and at this time, the tunneling cutter 59 can tunnel.

When the tunneling knife 59 is opened, the second engaging gear 41 is engaged with the first engaging gear 47, the rotating screw 45 is rotated in the forward direction, so that the connecting block 46 starts to descend, and thus the connecting block 46 starts to descend together with the connecting slide block 49, when the connecting slide block 49 descends, since the first fixing member 51 and the second fixing member 52 are fixed, the connecting line 53 on the right side is pulled by the first fixing member 51, and the connecting line 53 on the left side starts to move downward together with the second fixing member 52, and then the extension slide block 54 slides in the built-in chute 80, so that the connecting slide block 49 descends, and the extension slide block 54 also descends together with the descending of the connecting slide block 49, and thus the fixed descending plate 42 and the extension section on the lower side of the threaded shaft space 44 descend together, and at this time, the tunneling knife 59 rotates while descending, the tunneling knife 59 can excavate soil on the lower side of the housing 11, and in the process, the annular chute 68 is pulled downward to be stretched out of the annular chute 18, and the length of the slide rail is extended.

When the slide rail is extended, the main motor 20 is started in the forward direction at the moment, so that the driving shaft 21 rotates, the first belt pulley 22 and the first gear 31 rotate in the forward direction together, the rotary fixing screw 29 rotates under the action of the belt 23, the two threaded sliders 63 start to carry the escape compartment 34 together to descend, meanwhile, the first gear 31 rotates to drive the second belt pulley 32 to rotate, the cable winding wheel 37 rotates, the cable winding wheel 37 on the right side rotates under the action of the belt pulley 70 and the belt 71, the cable 38 is discharged by the cable winding wheel 37 at the moment, the cable 38 is discharged, a descending space is provided, and the cable is prevented from being torn off.

When the threaded sliding block 63 descends to the lower left side of the driven shaft 24 and the driving shaft 21, at the moment, the annular sliding groove 68 extends, after the threaded sliding block 63 moves to a position, the abutting sliding block 67 extends towards two sides and abuts against the side face of the annular sliding groove 68, at the moment, the threaded sliding block 63 is enabled to reach the lowest side at one time under the action of gravity, namely the upper side face of the fixed descending plate 42, at the moment, the threaded sliding block 63 stops, at the moment, the avoiding cabin 34 carries the cable 38 away from the position of the excavator bucket, at the moment, the excavator bucket can be avoided from tunneling, and the cable 38 is prevented from being excavated.

When the excavator bucket leaves, the tunneling motor 39 is started reversely at the moment, so that the fixed descending plate 42 is reset, the annular sliding groove 68 is reset at the same time, the threaded sliding block 63 is driven to be abutted against the threaded sections of the driving shaft 21 and the driven shaft 24 again, the abutting sliding block 67 is tangential and can be retreated into the small space 65 again to prevent the cable from being blocked, the main motor 20 is started reversely at the moment, so that the cable 38 is withdrawn, the threaded sliding block 63 starts to ascend and reset under the action of the driving shaft 21 and the driven shaft 24, the hiding cabin 34 drives the cable 38 to return to the original position, and the device is reset at the moment, so that the cable can be effectively prevented from being cut.

The beneficial effects of the invention are: the invention relates to equipment capable of preventing a cable from being dug and broken, which is provided with a sensor, wherein when the upper side of the cable is constructed, if a digging bucket of a digging machine is close to the device, the device can be automatically started to enable the device to wind a wire wound on a winding wheel to be discharged, then the device can be fixed with soil firstly, so that the device is provided with a fixed point, then the device can be started to drive the position where the cable is reserved to move downwards, so that the cable is far away from the digging bucket, meanwhile, a digging motor is started, a tunneling device on the lower side of the device starts to dig a channel downwards, a sliding rail is laid downwards, so that the device can move downwards to a position far away from the digging bucket, the digging and breaking are prevented, and when the digging bucket is far away, the device can be automatically reset, so that the cable returns to the original position, and the maintenance is convenient.

The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims (4)

1. The utility model provides a cable is prevented digging disconnected slot, includes the shell, its characterized in that: the shell is buried in soil, a plurality of shells are arranged in the soil, each shell is connected through a connecting pipeline, a cable enters the other shell from one shell through the connecting pipeline so as to transmit signals, a sensor is fixedly connected to the upper side face of each shell, the sensor can detect that a bucket digs downwards so as to send an electric signal to the shell, a belt wheel transmission space is arranged on the upper side of each shell, a rotating space is arranged on the right upper side of each shell, a moving space is arranged on the lower side of each rotating space, a main space is arranged on the lower side of each belt wheel transmission space, annular sliding grooves are formed in the outer sides of the main spaces, a threaded shaft space is arranged on the left side of each main space, a sliding groove is formed in the left side of each threaded shaft space, and an anti-cutting device is arranged between each belt wheel transmission space and the main space, the anti-breaking device comprises a main motor fixedly mounted on the upper left side wall of the belt wheel transmission space, a driving shaft is dynamically connected to the lower side of the main motor, the driving shaft extends downwards to penetrate through the lower side wall of the belt wheel transmission space to enter the driving space, the driving shaft can extend downwards to an outer space, the driving shaft is fixedly connected with a first belt wheel and a first gear from top to bottom in sequence, threads are arranged on the lower side of the driving shaft, the upper right side wall of the belt wheel transmission space is rotatably connected with a driven shaft, the driven shaft can extend into the outer space as well as the driving shaft, a second belt wheel is fixedly connected to the upper side of the driven shaft, a belt is arranged between the second belt wheel and the first belt wheel, threads are arranged on the lower side of the driven shaft, the driving shaft and the lower side of the driven shaft can stretch out and draw back, taking the left side annular chute as an example, and fixed sliding grooves are fixedly connected to the left side wall and the right side wall of the driving space, every be equipped with the spout in the fixed sliding tray, sliding connection has the screw thread slider in every spout, with left the screw thread slider is the example, this screw thread slider left side is equipped with little space, little space right side wall fixedly connected with telescopic link, the telescopic link can stretch out and draw back, and has elasticity, telescopic link left side fixedly connected with butt slider, the butt slider can extend left and run through in little space left side wall gets into the outer space, the butt slider can act as the slider, butt slider upside is tangential, two fixedly connected with avoids the storehouse between the screw thread slider, it is equipped with the wire winding space in the storehouse to avoid, the wire winding space with be equipped with anti-sticking pay-off between the main space, the rotating space with be equipped with fixing device between the removal space, the sliding tray with be equipped with extension fixture between the screw thread axle space, main space with avoid being equipped with excavating gear between the storehouse downside.

2. The cable cut-off prevention groove as defined in claim 1, wherein: the fixing device comprises a fixing motor fixedly installed on the left side wall of the moving space, a threaded shaft is dynamically connected to the right side of the fixing motor, a threaded moving block is slidably connected between the side walls of the moving space, the threaded moving block extends upwards to penetrate through the side wall of the moving space to enter the rotating space, a rotating fixing screw is rotatably connected to the right side of the threaded moving block, a threaded transmission block is fixedly connected between the side walls of the rotating space, threads are arranged in the threaded transmission block, threads are arranged on the rotating fixing screw, and the rotating fixing screw is in threaded fit with the threaded transmission block.

3. The cable cut-off prevention trench as claimed in claim 2, wherein: the anti-sticking dead pay-off is installed including rotating the flexible pivot of lateral wall on the main space, flexible pivot downside can extend, the position that flexible pivot upside can not extend, fixedly connected with second band pulley, the second band pulley with first gear engagement, flexible pivot extends to in the wire winding space, side fixedly connected with cable winding wheel in the flexible pivot, flexible pivot downside fixedly connected with belt pulley, it is connected with the minor axis to rotate between the lateral wall about the wire winding space, the minor axis is from last to fixedly connected with in proper order down cable winding wheel and belt pulley, be equipped with the area between the belt pulley, when flexible pivot rotates, can make cable winding wheel emits the cable, provides the space for subsequent motion.

4. A cable cut-off prevention trench as defined in claim 3, wherein: the extension device comprises a rotating screw rotatably arranged between the side walls of the threaded shaft space, a first meshing gear is fixedly connected to the lower side of the rotating screw, threads are arranged on the upper side of the rotating screw, the left side wall of the threaded shaft space is in sliding connection with a connecting block, the connecting block extends leftwards to penetrate through the left side wall of the threaded shaft space to enter the sliding groove, a connecting sliding block is fixedly connected to the left side of the connecting block, a built-in sliding groove is arranged on the left side of the connecting sliding block, an extension sliding block is slidably connected in the built-in sliding groove, the extension sliding block extends rightwards to penetrate through the right side wall of the built-in sliding groove to enter the sliding groove, a first fixing part is fixedly connected to the right side wall of the sliding groove, a second fixing part is fixedly connected to the front side of the extension sliding block, rotating wheels are rotatably connected to the upper side and the lower side of the connecting sliding block, and connecting wires are arranged between the rotating wheels, the left side of the connecting wire is fixedly connected with the second fixing piece, the right side of the connecting wire is fixedly connected with the first fixing piece, an annular chute is connected between the side walls of the annular chutes in a sliding manner, the annular chute is annular and can shield a space excavated by a tunneling knife through an annular space to prevent external earth from invading again, springs are fixedly connected between the lower side of the annular chute and the lower side wall of the annular chute, the annular chute extends downwards to penetrate through the lower side wall of the annular chute into an outer space, the inner side of the annular chute is also a chute, the annular chute can be in sliding fit with the abutting sliding block, a fixed descending plate is fixedly connected among the annular chute, the driving shaft, the driven shaft and the extending sliding block, and a telescopic connecting shaft is fixedly connected between the upper side of the fixed descending plate and the lower side of the shell, the telescopic connecting shaft can stretch out and draw back, and is provided with a spring which can stretch out and draw back.

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